阅读说明：本技术 一种输出可控电压的稳压电路 (Voltage stabilizing circuit capable of outputting controllable voltage ) 是由 任留辉 田刚强 高黎波 于 2020-04-09 设计创作，主要内容包括：本发明实施了一种输出可控电压的稳压电路,该稳压电路的稳压整流电路分别与稳压控制电路以及驱动电路电连接,且稳压控制电路与驱动电路电连接,稳压控制电路用于检测稳压整流电路输出端的电压值,在检测到稳压整流电路输出端的电压值超过设定电压的情况下,通过驱动电路触发稳压整流电路进行泄放电压；以及,在检测到稳压整流电路输出端的电压值不超过设定电压的情况下,储存稳压整流电路输出的电压能量,并持续输出设定电压。可见,应用本发明实施例提供的稳压控制电路,可以持续提供可控的预设电压,从而能够降低电路设计成本。(The invention implements a voltage stabilizing circuit for outputting controllable voltage, a voltage stabilizing rectification circuit of the voltage stabilizing circuit is respectively electrically connected with a voltage stabilizing control circuit and a driving circuit, the voltage stabilizing control circuit is electrically connected with the driving circuit, the voltage stabilizing control circuit is used for detecting the voltage value of the output end of the voltage stabilizing rectification circuit, and the voltage stabilizing rectification circuit is triggered by the driving circuit to discharge voltage under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit exceeds the set voltage; and under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit is detected not to exceed the set voltage, storing the voltage energy output by the voltage stabilizing rectification circuit and continuously outputting the set voltage. Therefore, the voltage stabilization control circuit provided by the embodiment of the invention can continuously provide controllable preset voltage, so that the design cost of the circuit can be reduced.)

1. A voltage regulator circuit for outputting a controlled voltage, the voltage regulator circuit comprising: the generator comprises a voltage stabilizing rectification circuit (100) used for being electrically connected with an electric connection end of a generator, a voltage stabilizing control circuit (200) used for outputting set voltage and a driving circuit (300) used for starting the voltage stabilizing rectification circuit (100) to realize voltage discharge;

the voltage stabilizing rectification circuit (100) is respectively electrically connected with the voltage stabilizing control circuit (200) and the drive circuit (300), and the voltage stabilizing control circuit (200) is electrically connected with the drive circuit (300);

the voltage stabilizing control circuit (200) is used for detecting the voltage value of the output end of the voltage stabilizing rectification circuit (100), and under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit (100) is detected to exceed the set voltage, the voltage stabilizing rectification circuit (100) is triggered to discharge voltage through the driving circuit (300); and under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit (100) is detected not to exceed the set voltage, storing the voltage energy output by the voltage stabilizing rectification circuit (100), and continuously outputting the set voltage.

2. The voltage regulator circuit according to claim 1, wherein the voltage regulator rectifier circuit (100) comprises: a first MOSFET (101), a second MOSFET (102), a third MOSFET (103), and a fourth MOSFET (104);

the source of the first MOSFET (101) is electrically connected with the drain of the second MOSFET (102); the drain electrode of the first MOSFET (101) is electrically connected with the drain electrode of the third MOSFET (103); the source of the third MOSFET (103) is electrically connected with the drain of the fourth MOSFET (104); the source of the second MOSFET (102) and the source of the fourth MOSFET (104) are both used for grounding;

the grid electrode and the source electrode of the first MOSFET (101) are electrically connected with a first electric connection end of a first circuit connection end of the generator; the first circuit connection end is any one of the power connection ends of the generator;

the gate of the second MOSFET (102) is electrically connected with the first output end of the driving circuit (300);

the grid electrode and the source electrode of the third MOSFET (103) are electrically connected with the second electric connection end of the first circuit connection end, and the drain electrode of the third MOSFET (103) is electrically connected with the input end of the voltage stabilization control circuit (200);

the gate of the fourth MOSFET (104) is electrically connected with the second output end of the driving circuit (300);

the voltage stabilization control circuit (200) is used for detecting the voltage value of the drain electrode of the third MOSFET (103), and triggering the second MOSFET (102) and the fourth MOSFET (104) to drain voltage through the driving circuit (300) under the condition that the voltage value of the drain electrode of the third MOSFET (103) is detected to exceed the set voltage; and storing the voltage energy rectified and output by the third MOSFET (103) under the condition that the voltage value of the drain electrode of the third MOSFET (103) is detected not to exceed the set voltage, and continuously outputting the set voltage.

3. The voltage regulator circuit according to claim 1, wherein the voltage regulator rectifier circuit (100) comprises: a first diode (105), a second diode (106), a third diode (107), a fourth diode (108), a first switch (109), and a second switch (110);

the anode of the first diode (105) is electrically connected with the cathode of the second diode (106), and the cathode of the first diode (105) is electrically connected with the cathode of the third diode (107);

the cathode of the second diode (106) is also electrically connected with the first end of the first switch (109) and the first electrical connection end of the first circuit end respectively, and the anode of the second diode (106) is electrically connected with the second end of the first switch (109) and is used for grounding; the first circuit connection end is any one of the power connection ends of the generator;

the cathode of the third diode (107) is also electrically connected with the voltage regulation control circuit (200), and the anode of the third diode (107) is electrically connected with the cathode of the fourth diode (108);

the cathode of the fourth diode (108) is also electrically connected with the first end and the second electrical connection end of the second switch (110), respectively, and the anode of the fourth diode (108) is electrically connected with the second end of the second switch (110) and is used for grounding;

the first switch (109) and the second switch (110) are also electrically connected with the voltage stabilization control circuit (200);

the voltage stabilizing control circuit (200) is used for detecting the voltage value of the cathode of the third diode (107), and controlling the first switch (109) to be closed when the voltage value of the cathode of the third diode (107) exceeds the preset voltage and the first electric connection end is detected to output a high level so as to discharge the level of the circuit where the first electric connection end is located; and when the second electric connection terminal is detected to output a high level, controlling the second switch (110) to be closed so as to discharge the level of the circuit where the second electric connection terminal is positioned.

4. The voltage regulation circuit according to any one of claims 2-3, wherein the regulation control circuit (200) comprises: the voltage acquisition circuit (210) and the voltage regulation control circuit (220);

the voltage acquisition circuit (210) comprises: a voltage stabilizing capacitor (211), a first resistor (212) and a second resistor (213);

the first end of the voltage-stabilizing capacitor (211) and the first end of the first resistor (212) are respectively and electrically connected with the output end of the voltage-stabilizing rectification circuit (100) and are used for outputting the set voltage, and the second end of the voltage-stabilizing capacitor (211) is grounded;

the second end of the first resistor (212) is electrically connected with the first end of the second resistor (213);

the first end of the second resistor (213) is also electrically connected with the input end of the voltage regulation control circuit (220), and the second end of the second resistor (213) is used for grounding;

the output end of the voltage regulation control circuit (220) is electrically connected with the driving circuit (300), the voltage regulation control circuit (220) is used for detecting the voltage value of the input end connected to the voltage regulation control circuit (220), and the driving circuit (300) is started to trigger the voltage stabilization rectification circuit (100) to discharge voltage under the condition that the voltage value of the input end of the voltage regulation control circuit (220) is detected to exceed a set threshold value; and under the condition that the voltage value of the input end of the voltage regulating control circuit (220) is detected not to exceed a set threshold value, the voltage stabilizing capacitor (211) stores the voltage energy output by the voltage stabilizing rectification circuit (100) and continuously outputs the set voltage.

5. The voltage regulation circuit of claim 4, wherein the voltage acquisition circuit (210) further comprises: a first capacitor;

the first end of the first capacitor is electrically connected with the first end of the voltage-stabilizing capacitor (211), and the second end of the first capacitor is used for grounding.

6. The voltage regulation circuit of claim 5, wherein the voltage acquisition circuit (210) further comprises: a first zener diode;

the cathode of the first voltage stabilizing diode is electrically connected with the first end of the voltage stabilizing capacitor (211) and the first end of the first resistor (212) respectively, and the anode of the first voltage stabilizing diode is used for grounding.

7. The voltage regulation circuit of claim 4, wherein the driver circuit (300) comprises: the circuit comprises a driving chip (301), an eighth resistor (302), a ninth resistor (303), a sixth capacitor (304) and a seventh capacitor (305);

a first pin of the driving chip (301) is electrically connected with a first output end of the voltage regulating control circuit (220); the second pin of the driving chip (301) is used for grounding; a third pin of the driving chip (301) is electrically connected with a second output end of the voltage regulating control circuit (220); a fourth pin of the driving chip (301) is electrically connected with a first end of the eighth resistor (302), and a fifth pin of the driving chip (301) is electrically connected with a first end of the sixth capacitor (304) and a first end of the seventh capacitor (305), and is both used for being electrically connected with a power supply outputting a second preset value; a sixth pin of the driving chip (301) is electrically connected with a first end of the ninth resistor (303);

a second terminal of the eighth resistor (302) is electrically connected to the gate of the fourth MOSFET (104);

a second end of the ninth resistor (303) is electrically connected to the gate of the second MOSFET (102);

the second end of the sixth capacitor (304) and the second end of the seventh capacitor (305) are both used for grounding;

the driving chip (301) is used for triggering the second MOSFET (102) and the fourth MOSFET (104) to discharge voltage according to a control signal which is sent by the voltage regulating control circuit (220) and used for triggering the voltage stabilizing and rectifying circuit (100).

8. The voltage regulator circuit of any of claims 5-7, further comprising: a level detection circuit (400);

the level detection circuit (400) comprises: the circuit comprises two monitoring voltage circuits (410), a second capacitor (420), a third capacitor (430), a fourth capacitor (440), an operational amplifier (450), a fifth diode (460), a third resistor (470) and a fourth resistor (480);

each of the monitor voltage circuits (410) includes: a fifth resistor (411), a sixth resistor (412), a seventh resistor (413), a second zener diode (414), and a fifth capacitor (415);

wherein a second end of the fifth resistor (411) is electrically connected with a first end of the sixth resistor (412) and a first end of the seventh resistor (413), respectively;

the first end of the sixth resistor (412) is also electrically connected with the anode of the second zener diode (414) and the first end of the fifth capacitor (415), respectively, and the second end of the sixth resistor (412), the cathode of the second zener diode (414) and the second end of the fifth capacitor (415) are all used for grounding;

in one of the voltage monitoring circuits, a first terminal of the fifth resistor (411) is electrically connected with a second connecting terminal of the first connecting terminal; a second end of the sixth resistor (412) is electrically connected to a negative phase input of the operational amplifier (450);

in another voltage monitoring circuit, a first end of the fifth resistor (411) is electrically connected with a first connecting end of the first connecting ends; a second end of the sixth resistor (412) is electrically connected with a non-inverting input end of the operational amplifier (450);

a first output terminal of the operational amplifier (450) is electrically connected to a first terminal of the second capacitor (420), and a second output terminal of the operational amplifier (450) is electrically connected to a first terminal of the third capacitor (430); a third output terminal of the operational amplifier (450) is electrically connected with a positive electrode of the fifth diode (460);

the first end of the second capacitor (420) is also used for being electrically connected with a direct current power supply which outputs a first preset value, and the second end of the second capacitor (420) is used for being grounded;

the first end of the third capacitor (430) is also used for being electrically connected with a direct current power supply which outputs a first preset value, and the second end of the fourth capacitor (440) is electrically connected with the ground;

a cathode of the fifth diode (460) is electrically connected with a first end of the third resistor (470) and a first end of the fourth resistor (480), respectively;

the second end of the third resistor (470) is electrically connected with the first end of the fourth capacitor (440) and the voltage regulation control circuit (220), respectively;

the second end of the fourth resistor (480) and the second end of the third capacitor (430) are both used for grounding.

9. The voltage regulation circuit of claim 8, wherein the voltage regulation control circuit (220) comprises: a singlechip (221) and a tenth resistor (222),

wherein, a first pin of the single chip microcomputer (221) is electrically connected with a first end of the tenth resistor (222), a second end of the tenth resistor (222) is used for being electrically connected with a power supply and for resetting, a second pin of the single chip microcomputer (221) is used for being electrically connected with the power supply, a third pin of the single chip microcomputer (221) is respectively electrically connected with a second end of the third resistor (470) and a first end of the fourth capacitor (440), a fourth pin of the single chip microcomputer (221) is electrically connected with a first pin of the driving chip (301), a fifth pin of the single chip microcomputer (221) is electrically connected with a third pin of the driving chip (301), a sixth pin of the single chip microcomputer (221) is electrically connected with a first end of the second resistor (213) in the voltage acquisition circuit (210) and is used for accessing a voltage value output by the voltage acquisition circuit (210) according to detection, the control signal is sent to the driving chip (301), and after the control signal is amplified by the driving chip (301), the voltage stabilizing and rectifying circuit (100) is triggered to discharge voltage, so that the voltage acquisition circuit (210) continuously outputs the set voltage, and a seventh pin of the singlechip (221) is used for grounding.

10. The voltage regulation circuit of claim 9, wherein the voltage regulation control circuit (220) further comprises: two decoupling circuits (223);

each of the decoupling circuits (223) includes: an eighth capacitor (2231), an eleventh resistor (2232), and a twelfth resistor (2233);

a first end of the eighth capacitor (2231) is electrically connected to a first end of the eleventh resistor (2232) and a first end of the twelfth resistor (2233);

a second end of the eighth capacitor (2231) and a second end of the eleventh resistor (2232) are both configured to be grounded;

in one decoupling circuit (223), the first end of the eighth capacitor (2231) is further electrically connected to the fourth pin of the single chip, and the second end of the twelfth resistor (2233) is electrically connected to the first pin of the driving chip (301);

in the other decoupling circuit (223), the first end of the eighth capacitor (2231) is further electrically connected to the fifth pin of the single chip microcomputer (221), and the second end of the twelfth resistor (2233) is electrically connected to the third pin of the driver chip (301).

Technical Field

The invention relates to the technical field of generators, in particular to a voltage stabilizing circuit for outputting controllable voltage.

Background

In current consumer electronic products, power consumption is one of the important design considerations, for example, in some electronic products, the power usage limit of each circuit in the product is usually specified, and the input voltage required by the circuits with different power usage limits is also different.

Disclosure of Invention

An objective of an embodiment of the invention is to provide a voltage regulator circuit outputting a controllable voltage to provide a controllable regulated voltage. The specific technical scheme is as follows:

the embodiment of the invention provides a voltage stabilizing circuit for outputting controllable voltage, which comprises: the generator comprises a voltage stabilizing control circuit for outputting set voltage, a voltage stabilizing rectification circuit for being electrically connected with an electric connection end of the generator and a driving circuit for starting the voltage stabilizing rectification circuit to realize voltage discharge;

the voltage stabilizing rectification circuit is respectively electrically connected with the voltage stabilizing control circuit and the driving circuit, and the voltage stabilizing control circuit is electrically connected with the driving circuit;

the voltage stabilizing control circuit is used for detecting the voltage value of the output end of the voltage stabilizing rectification circuit, and triggering the voltage stabilizing rectification circuit to discharge voltage through the driving circuit under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit exceeds the set voltage; and under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit is detected not to exceed the set voltage, storing the voltage energy output by the voltage stabilizing rectification circuit, and continuously outputting the set voltage.

In one embodiment of the present invention, the voltage stabilization rectification circuit includes: a first MOSFET, a second MOSFET, a third MOSFET and a fourth MOSFET;

the source electrode of the first MOSFET is electrically connected with the drain electrode of the second MOSFET; the drain electrode of the first MOSFET is electrically connected with the drain electrode of the third MOSFET; the source electrode of the third MOSFET is electrically connected with the drain electrode of the fourth MOSFET; the source electrode of the second MOSFET and the source electrode of the fourth MOSFET are used for grounding;

the grid electrode and the source electrode of the first MOSFET are electrically connected with a first electric connection end of a first circuit connection end of the generator; the first circuit connection end is any one of the power connection ends of the generator;

the grid electrode of the second MOSFET is electrically connected with the first output end of the driving circuit;

the grid electrode and the source electrode of the third MOSFET are electrically connected with the second connecting end of the first connecting end, and the drain electrode of the third MOSFET is electrically connected with the input end of the voltage-stabilizing control circuit;

the grid electrode of the fourth MOSFET is electrically connected with the second output end of the driving circuit;

the voltage stabilization control circuit is used for detecting the voltage value of the drain electrode of the third MOSFET, and triggering the second MOSFET and the fourth MOSFET to discharge voltage through the driving circuit under the condition that the voltage value of the drain electrode of the third MOSFET exceeds the set voltage; and under the condition that the voltage value of the drain electrode of the third MOSFET is detected not to exceed the set voltage, storing the voltage energy rectified and output by the third MOSFET and continuously outputting the set voltage.

In one embodiment of the present invention, the voltage stabilization rectification circuit includes: the first diode, the second diode, the third diode, the fourth diode, the first switch and the second switch;

the anode of the first diode is electrically connected with the cathode of the second diode, and the cathode of the first diode is electrically connected with the cathode of the third diode;

the cathode of the second diode is respectively and electrically connected with the first end of the first switch and the first connecting end of the first circuit connecting end, and the anode of the second diode is electrically connected with the second end of the first switch and is used for grounding; the first circuit connection end is any one of the power connection ends of the generator;

the cathode of the third diode is also electrically connected with the voltage stabilization control circuit, and the anode of the third diode is electrically connected with the cathode of the fourth diode;

the cathode of the fourth diode is also electrically connected with the first end of the second switch and the second electric connection end respectively, and the anode of the fourth diode is electrically connected with the second end of the second switch and is used for grounding;

the first switch and the second switch are also electrically connected with the voltage stabilization control circuit;

the voltage stabilizing control circuit is used for detecting the voltage value of the cathode of the third diode, and controlling the first switch to be closed when detecting that the first electric connection end outputs a high level under the condition that the voltage value of the cathode of the third diode exceeds the preset voltage so as to discharge the level of the circuit where the first electric connection end is located; and when the second power connection end is detected to output a high level, controlling the second switch to be closed so as to discharge the level of the circuit where the second power connection end is located.

In one embodiment of the present invention, the voltage stabilization control circuit includes: the voltage acquisition circuit and the voltage regulation control circuit;

the voltage acquisition circuit includes: the voltage stabilizing circuit comprises a voltage stabilizing capacitor, a first resistor and a second resistor;

the first end of the voltage-stabilizing capacitor and the first end of the first resistor are respectively and electrically connected with the output end of the voltage-stabilizing rectification circuit and are used for outputting the set voltage, and the second end of the voltage-stabilizing capacitor is grounded;

the second end of the first resistor is electrically connected with the first end of the second resistor;

the first end of the second resistor is also electrically connected with the input end of the voltage regulating control circuit, and the second end of the second resistor is used for grounding;

the output end of the voltage regulation control circuit is electrically connected with the driving circuit, the voltage regulation control circuit is used for detecting the voltage value of the input end connected to the voltage regulation control circuit, and the driving circuit is started to trigger the voltage stabilization rectification circuit to discharge voltage under the condition that the voltage value of the input end of the voltage regulation control circuit is detected to exceed a set threshold value; and under the condition that the voltage value of the input end of the voltage regulating control circuit is detected not to exceed a set threshold value, the voltage stabilizing capacitor stores the voltage energy output by the voltage stabilizing rectification circuit and continuously outputs the set voltage.

In an embodiment of the present invention, the voltage acquisition circuit further includes: a first capacitor;

the first end of the first capacitor is electrically connected with the first end of the voltage-stabilizing capacitor, and the second end of the first capacitor is used for grounding.

In an embodiment of the present invention, the voltage acquisition circuit further includes: a first zener diode;

the cathode of the first voltage stabilizing diode is electrically connected with the first end of the voltage stabilizing capacitor and the first end of the first resistor respectively, and the anode of the first voltage stabilizing diode is used for grounding.

In one embodiment of the present invention, the driving circuit includes: the driving chip, the eighth resistor, the ninth resistor, the sixth capacitor and the seventh capacitor;

the first pin of the driving chip is electrically connected with the first output end of the voltage regulating control circuit; the second pin of the driving chip is used for grounding; a third pin of the driving chip is electrically connected with a second output end of the voltage regulating control circuit; a fourth pin of the driving chip is electrically connected with the first end of the eighth resistor, and a fifth pin of the driving chip is electrically connected with the first end of the sixth capacitor and the first end of the seventh capacitor respectively and is used for being electrically connected with a power supply outputting a second preset value; a sixth pin of the driving chip is electrically connected with a first end of the ninth resistor;

a second end of the eighth resistor is electrically connected with the gate of the fourth MOSFET;

a second end of the ninth resistor is electrically connected with the gate of the second MOSFET;

the second end of the sixth capacitor and the second end of the seventh capacitor are both used for grounding;

the driving chip is used for triggering the second MOSFET and the fourth MOSFET to discharge voltage according to a control signal which is sent by the voltage regulating control circuit and used for triggering the voltage stabilizing and rectifying circuit.

In an embodiment of the present invention, the voltage stabilizing circuit further includes: a level detection circuit;

the level detection circuit includes: the circuit comprises two monitoring voltage circuits, a second capacitor, a third capacitor, a fourth capacitor, an operational amplifier, a fifth diode, a third resistor and a fourth resistor;

each of the monitor voltage circuits includes: the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor, the second voltage stabilizing diode and the fifth capacitor;

the second end of the fifth resistor is electrically connected with the first end of the sixth resistor and the first end of the seventh resistor respectively;

the first end of the sixth resistor is also electrically connected with the anode of the second voltage stabilizing diode and the first end of the fifth capacitor respectively, and the second end of the sixth resistor, the cathode of the second voltage stabilizing diode and the second end of the fifth capacitor are all used for grounding;

in one voltage monitoring circuit, the first end of the fifth resistor is electrically connected with the second connecting end of the first connecting end; a second end of the sixth resistor is electrically connected with a negative phase input end of the operational amplifier;

in another voltage monitoring circuit, a first end of the fifth resistor is electrically connected with a first connecting end of the first connecting end; a second end of the sixth resistor is electrically connected with a positive phase input end of the operational amplifier;

the first output end of the operational amplifier is electrically connected with the first end of the second capacitor, and the second output end of the operational amplifier is electrically connected with the first end of the third capacitor; a third output end of the operational amplifier is electrically connected with the anode of the fifth diode;

the first end of the second capacitor is also used for being electrically connected with a direct current power supply outputting a first preset value, and the second end of the second capacitor is used for being grounded;

the first end of the third capacitor is also used for being electrically connected with a direct current power supply which outputs a first preset value, and the second end of the fourth capacitor is used for being grounded;

the cathode of the fifth diode is electrically connected with the first end of the third resistor and the first end of the fourth resistor respectively;

the second end of the third resistor is electrically connected with the first end of the fourth capacitor and the voltage regulating control circuit respectively;

and the second end of the fourth resistor and the second end of the third capacitor are both used for grounding.

In one embodiment of the present invention, the voltage regulation control circuit includes: a singlechip and a tenth resistor, wherein the singlechip is connected with the tenth resistor,

wherein, a first pin of the single chip is electrically connected with a first end of the tenth resistor, a second end of the tenth resistor is used for being electrically connected with a power supply and used for resetting, a second pin of the single chip is used for being electrically connected with the power supply, a third pin of the single chip is respectively electrically connected with a second end of the third resistor and a first end of the fourth capacitor, a fourth pin of the single chip is electrically connected with a first pin of the driving chip, a fifth pin of the single chip is electrically connected with a third pin of the driving chip, a sixth pin of the single chip is electrically connected with a first end of the second resistor in the voltage acquisition circuit and used for sending the control signal to the driving chip according to the detected voltage value output by the connected voltage acquisition circuit and triggering the voltage stabilizing and rectifying circuit to discharge voltage after being amplified by the driving chip, so that the voltage acquisition circuit continuously outputs the set voltage, and a seventh pin of the singlechip is used for grounding.

In an embodiment of the present invention, the voltage regulation control circuit further includes: two decoupling circuits;

each decoupling circuit includes: an eighth capacitor, an eleventh resistor and a twelfth resistor;

the first ends of the eighth capacitors are electrically connected with the first end of the eleventh resistor and the first end of the twelfth resistor;

a second end of the eighth capacitor and a second end of the eleventh resistor are both used for grounding;

in a decoupling circuit, the first end of the eighth capacitor is also electrically connected with the fourth pin of the singlechip, and the second end of the twelfth resistor is electrically connected with the first pin of the driving chip;

in another decoupling circuit, the first end of the eighth capacitor is further electrically connected with the fifth pin of the single chip, and the second end of the twelfth resistor is electrically connected with the third pin of the driving chip.

The embodiment of the invention provides a voltage stabilizing circuit for outputting controllable voltage, wherein a voltage stabilizing rectification circuit of the voltage stabilizing circuit is respectively and electrically connected with a voltage stabilizing control circuit and a driving circuit, the voltage stabilizing control circuit is electrically connected with the driving circuit, the voltage stabilizing control circuit is used for detecting the voltage value of the output end of the voltage stabilizing rectification circuit, and the voltage stabilizing rectification circuit is triggered by the driving circuit to discharge voltage under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit exceeds the set voltage; and under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit is detected not to exceed the set voltage, storing the voltage energy output by the voltage stabilizing rectification circuit and continuously outputting the set voltage. Compared with the prior art, the voltage stabilization control circuit provided by the embodiment of the invention can detect the voltage value output by the voltage stabilization rectification circuit in real time, and send the control signal for triggering the voltage stabilization rectification circuit to the drive circuit according to the detected voltage value, and the control signal is amplified by the drive circuit and then triggers the voltage stabilization rectification circuit to release voltage, so that the set voltage meeting the requirement of an external load can be continuously provided. Therefore, by applying the voltage stabilization control circuit provided by the embodiment of the invention, a corresponding voltage stabilization circuit can be set by using a limited circuit for each power supply, so that the design cost of the circuit can be reduced. Of course, it is not necessary for any product or method of practicing the invention to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a first voltage regulator circuit outputting a controllable voltage according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a brushless generator according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a portion of a voltage regulator circuit including a set of voltage regulator rectifier circuits according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a second voltage regulator circuit for outputting a controllable voltage according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a portion of a third voltage regulator circuit outputting a controllable voltage according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a level detection circuit according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a driving circuit according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a first voltage regulation control circuit according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second voltage regulation control circuit according to an embodiment of the present invention.

Wherein, 100-a voltage stabilizing rectification circuit, 200-a voltage stabilizing control circuit, 300-a driving circuit, 400-a level detection circuit, 101-a first MOSFET, 102-a second MOSFET, 103-a third MOSFET, 104-a fourth MOSFET, 105-a first diode, 106-a second diode, 107-a third diode, 108-a fourth diode, 109-a first switch, 110-a second switch, 210-a voltage acquisition circuit, 220-a voltage regulating control circuit, 211-a voltage stabilizing capacitor, 212-a first resistor, 213-a second resistor, 221-a singlechip, 222-a tenth resistor, 223-a decoupling circuit, 2231-an eighth capacitor, 2232-an eleventh resistor, 2233-a twelfth resistor, 301-a driving chip, 302-an eighth resistor, 303-ninth resistor, 304-sixth capacitor, 305-seventh capacitor, 410-monitor voltage circuit, 420-second capacitor, 430-third capacitor, 440-fourth capacitor, 450-operational amplifier, 460-fifth diode, 470-third resistor, 480-fourth resistor, 411-fifth resistor, 412-sixth resistor, 413-seventh resistor, 414-second zener diode, 415-fifth capacitor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to output a controllable stable voltage, an embodiment of the invention provides a voltage stabilizing circuit for outputting a controllable voltage.

As shown in fig. 1, a voltage regulator circuit for outputting a controllable voltage according to an embodiment of the present invention includes: the voltage stabilizing circuit comprises: the generator comprises a voltage stabilizing and rectifying circuit 100, a voltage stabilizing control circuit 200 and a driving circuit 300, wherein the voltage stabilizing and rectifying circuit 100 is used for being electrically connected with an electric connection end of a generator, the voltage stabilizing control circuit 200 is used for outputting set voltage, and the driving circuit 300 is used for starting the voltage stabilizing and rectifying circuit 100 to realize voltage discharge;

the voltage stabilizing rectification circuit 100 is electrically connected with the voltage stabilizing control circuit 200 and the driving circuit 300 respectively, and the voltage stabilizing control circuit 200 is electrically connected with the driving circuit 300;

the voltage stabilizing control circuit 200 is configured to detect a voltage value at an output end of the voltage stabilizing and rectifying circuit 100, and trigger the voltage stabilizing and rectifying circuit 100 to discharge voltage through the driving circuit 300 when the voltage value at the output end of the voltage stabilizing and rectifying circuit 100 is detected to exceed the set voltage; and under the condition that the voltage value of the output end of the voltage stabilizing rectification circuit 100 is detected not to exceed the set voltage, storing the voltage energy output by the voltage stabilizing rectification circuit 100 and continuously outputting the set voltage.

The number of the voltage stabilizing and rectifying circuits can be one or more, and can be determined according to the number of coil groups of the generator.

As shown in fig. 2, the generator in this embodiment is a brushless generator, and the brushless generator has three sets of coils, each set of coil has a connecting terminal, according to the actual application requirement, the three sets of coils can output power simultaneously, or one set or two sets of coils can output power, and the three connecting terminals corresponding to the three sets of coils are the first connecting terminal, the second connecting terminal and the third connecting terminal in fig. 2 respectively.

In this embodiment, the voltage stabilizing and rectifying circuits 100 are in a one-to-one correspondence with the electrical terminals of the generator, that is, one electrical terminal corresponds to one voltage stabilizing and rectifying circuit 100, and when three groups of coils of the generator output power simultaneously, the voltage stabilizing and rectifying circuit of this embodiment includes three voltage stabilizing and rectifying circuits 100, a first voltage stabilizing and rectifying circuit 100 is electrically connected to the first electrical terminal, a second voltage stabilizing and rectifying circuit 100 is electrically connected to the second electrical terminal, and a third voltage stabilizing and rectifying circuit 100 is electrically connected to the third electrical terminal.

Therefore, the voltage stabilizing circuit in this embodiment can simultaneously rectify the three-phase output ac voltage of the brushless generator into dc voltage.

In addition, the voltage range output by the generator is large and unstable, so in order to protect the load, the output voltage of the generator needs to be controlled to stably output a set voltage required by an external load.

The set threshold is a preset voltage value, and the set voltage value is a voltage required by an external load. Such as: and if the external load needs 28V, the set voltage is 28V, and if the external load needs 36V, the set voltage is 36V.

Based on the above analysis, the generator has at least one connection end, and each connection end of the generator corresponds to one voltage stabilizing and rectifying circuit 100.

Illustratively, when two power connection ends of the generator are connected, two voltage stabilizing and rectifying circuits 100 need to be connected correspondingly, specifically:

the voltage stabilizing control circuit 200 is electrically connected to the first voltage stabilizing and rectifying circuit 100, the second voltage stabilizing and rectifying circuit 100 and the driving circuit 300, respectively, and the first voltage stabilizing and rectifying circuit 100 and the second voltage stabilizing and rectifying circuit 100 are electrically connected to the driving circuit 300, respectively, the voltage stabilizing control circuit 200 simultaneously detects the voltage value at the output end of the first voltage stabilizing and rectifying circuit 100 and the voltage value at the output end of the second voltage stabilizing and rectifying circuit 100 in real time, when the voltage value is detected to exceed the set voltage, the voltage stabilizing control circuit 200 starts the driving circuit 300 to trigger the first voltage stabilizing and rectifying circuit 100 and the second voltage stabilizing and rectifying circuit 100 to discharge the voltage, and when the voltage value is detected not to exceed the set voltage, the voltage stabilizing control circuit 200 stores the voltage energy output by the voltage stabilizing and rectifying circuit 100, so as to continuously output the setting voltage.

It should be noted that the voltage value at the output end of the first voltage stabilizing and rectifying circuit 100 is the same as the voltage value at the output end of the second voltage stabilizing and rectifying circuit 100, so that the voltage value output by the voltage stabilizing and rectifying circuit 100 can be obtained as long as the voltage stabilizing control circuit 200 acquires the voltage value at the output end of one voltage stabilizing and rectifying circuit 100.

The voltage stabilizing and rectifying circuit 100 may rectify an ac voltage output from the generator and output the rectified dc voltage.

The working principle of the voltage stabilizing circuit for outputting controllable voltage of the embodiment is as follows: the voltage stabilizing control circuit 200 collects the voltage value of the output end of the voltage stabilizing and rectifying circuit 100 in real time, and determines whether the collected voltage value exceeds a set voltage, if the collected voltage value exceeds the set voltage, the voltage stabilizing and rectifying circuit 100 is triggered by the driving circuit 300 to discharge the voltage, in the process of discharging the voltage, the voltage stabilizing control circuit 200 does not store energy any more, at the moment, the voltage stabilizing control circuit 200 can continuously output the set voltage, an external load can consume the stored voltage energy of the voltage stabilizing and rectifying circuit 200, if the collected voltage value does not exceed the set voltage, the voltage stabilizing control circuit 200 does not send a control signal for controlling the voltage stabilizing and rectifying circuit 100 to the driving circuit 300, stores the voltage energy output by the voltage stabilizing and rectifying circuit 100, and continuously outputs the set voltage.

Based on the above example, if the setting voltage required by the external load is 28V, the voltage detected by the voltage stabilization control circuit 200 in real time exceeds 28V, and when the detected voltage value exceeds 28V, the driving circuit 300 is started to operate, that is, a control signal for triggering the voltage stabilization rectification circuit 100 to discharge voltage is sent to the driving circuit 300, and after the control signal is amplified by the driving circuit 300, the voltage stabilization rectification circuit 100 is triggered to discharge voltage, and the stored voltage energy is consumed to continuously provide stable setting voltage for the external load, and when the detected voltage value does not exceed 28V, the voltage energy output by the voltage stabilization rectification circuit 100 is stored, so as to achieve the purpose of continuously providing stable setting voltage for the external load.

Therefore, according to the voltage stabilizing circuit for outputting a controllable voltage provided by the embodiment of the present invention, the voltage stabilizing rectification circuit 100 of the voltage stabilizing circuit is electrically connected to the voltage stabilizing control circuit 200 and the driving circuit 300, respectively, and the voltage stabilizing control circuit 200 is electrically connected to the driving circuit 300, the voltage stabilizing control circuit 200 is configured to detect a voltage value at an output end of the voltage stabilizing rectification circuit 100, and when the voltage value at the output end of the voltage stabilizing rectification circuit 100 is detected to exceed a set voltage, the driving circuit 300 triggers the voltage stabilizing rectification circuit 100 to discharge the voltage; and storing the voltage energy output by the voltage stabilizing and rectifying circuit 100 and continuously outputting the set voltage under the condition that the voltage value of the output end of the voltage stabilizing and rectifying circuit 100 is detected not to exceed the set voltage. Compared with the prior art, the voltage stabilization control circuit 200 provided by the embodiment of the invention can detect the voltage value output by the voltage stabilization rectification circuit 100 in real time, and send the control signal for triggering the voltage stabilization rectification circuit 100 to the driving circuit 300 according to the detected voltage value, and after the control signal is amplified by the driving circuit 300, the voltage stabilization rectification circuit 100 is triggered to discharge voltage, so that the set voltage meeting the external load requirement can be continuously provided. Therefore, by applying the voltage stabilization control circuit 200 provided by the embodiment of the present invention, a corresponding voltage stabilization circuit can be set for each power supply using a limited circuit, so that the circuit design cost can be reduced.

Because the MOSFET has a diode for current leakage, the diode can be used as a bridge to rectify ac current into dc current. In view of the above, in the embodiment of the present invention, as shown in fig. 3, the voltage stabilizing rectifier circuit 100 may include: a first MOSFET, a second MOSFET102, a third MOSFET103 and a fourth MOSFET 104;

the source of the first MOSFET101 is electrically connected with the drain of the second MOSFET 102; the drain electrode of the first MOSFET101 is electrically connected to the drain electrode of the third MOSFET 103; the source of the third MOSFET103 is electrically connected to the drain of the fourth MOSFET 104; the source of the second MOSFET102 and the source of the fourth MOSFET104 are both used for grounding;

the grid electrode and the source electrode of the first MOSFET101 are electrically connected with a first electric connection end of a first circuit connection end of the generator; the first circuit connection end is any one of the power connection ends of the generator;

the gate of the second MOSFET102 is electrically connected to a first output terminal of the driving circuit 300;

the gate and the source of the third MOSFET103 are electrically connected to the second electrical connection end of the first electrical connection end, and the drain of the third MOSFET103 is electrically connected to the input end of the voltage regulation control circuit 200;

the gate of the fourth MOSFET104 is electrically connected to the second output terminal of the driving circuit 300;

the voltage stabilizing control circuit 200 is configured to detect a voltage value of the drain of the third MOSFET103, and trigger the second MOSFET102 and the fourth MOSFET104 to discharge voltage through the driving circuit 300 when the voltage value of the drain of the third MOSFET103 exceeds the set voltage; and storing the voltage energy rectified and output by the third MOSFET103 and continuously outputting the set voltage under the condition that the voltage value of the drain electrode of the third MOSFET103 is detected not to exceed the set voltage.

In fig. 3, two driving circuit interfaces are provided, one driving circuit interface is an interface for electrically connecting the second MOSFET102 with a driving circuit, and the other driving circuit interface is an interface for electrically connecting the fourth MOSFET104 with the driving circuit.

Vcc (volt Current concentrator) in fig. 3 is the set voltage that is continuously output in this embodiment, that is, the power source of the external load.

In addition, GND (Ground) in fig. 3 is an identification of Ground.

The voltage stabilization design of the present embodiment is implemented by controlling the MOSFET discharging voltage of a set of voltage stabilization rectification circuits 100 through the voltage stabilization control circuit 200.

In this embodiment, the voltage stabilization control circuit 200 may store the voltage energy of the dc voltage signal output by the third MOSFET103, so as to stabilize the current.

The voltage output by the voltage regulator control circuit 200 is low enough to start the MOSFET, and therefore, the driving circuit 300 is required to amplify the voltage value output by the voltage regulator control circuit 200, i.e., the control signal, to start the MOSFET to discharge the voltage.

For example, if the voltage value output by the voltage stabilizing control circuit 200 is 5V and 12V is needed when the MOSFET starts to operate, the driving circuit 300 amplifies the 5V input by the voltage stabilizing control circuit 200 to 12V to achieve the purpose of starting the MOSFET to discharge voltage.

The working principle of the voltage stabilizing circuit for outputting controllable voltage of the embodiment is as follows: in each group of voltage stabilizing and rectifying circuit 100, the voltage stabilizing control circuit 200 collects the voltage value output by the third MOSFET103 and determines whether the collected voltage value output by the third MOSFET103 exceeds a set voltage, if the collected voltage value exceeds the set voltage, a control signal triggering MOSFETs in the voltage stabilizing and rectifying circuit 100 is sent to the driving circuit 300, the control signal is amplified by the driving circuit 300 so as to enable the second MOSFET102 and the fourth MOSFET104 to discharge voltage, in the process of discharging voltage, the voltage stabilizing control circuit 200 does not store energy any more, at this time, the voltage stabilizing control circuit 200 continuously outputs the set voltage, an external load consumes the stored voltage energy of the voltage stabilizing control circuit 200, if the collected voltage value does not exceed the set voltage, the voltage stabilizing control circuit 200 controls not to send a control signal triggering MOSFETs in the voltage stabilizing and rectifying circuit 100 to the driving circuit 300 any more, but only monitors the voltage value output by the third MOSFET103 in the voltage stabilizing and rectifying circuit 100, and stores the voltage energy output by the voltage stabilizing and rectifying circuit 100, and continues to output the set voltage.

It can be seen that in the technical solution of the embodiment of the present invention, the source of the first MOSFET101 of the voltage stabilizing rectification circuit 100 is electrically connected to the drain of the second MOSFET 102; the drain of the first MOSFET101 is electrically connected to the drain of the third MOSFET 103; the source of the third MOSFET103 is electrically connected to the drain of the fourth MOSFET 104; the source of the second MOSFET102 and the source of the fourth MOSFET104 are both used for ground; the grid electrode and the source electrode of the first MOSFET101 are electrically connected with a first electric connection end of the generator; the gate of the second MOSFET102 is electrically connected to a first output terminal of the driving circuit 300; the grid electrode and the source electrode of the third MOSFET103 are electrically connected with the second connecting end of the first connecting end, and the drain electrode of the third MOSFET103 is electrically connected with the input end of the voltage-stabilizing control circuit 200; the gate of the fourth MOSFET104 is electrically connected to a second output terminal of the driving circuit 300. It can be seen that, compared with the prior art, the voltage regulation control circuit 200 in the embodiment of the present invention detects the voltage value of the drain of the third MOSFET103 in real time, and in the case that the voltage value of the drain of the third MOSFET103 is detected to exceed the set voltage, the voltage regulation control circuit 200 triggers the second MOSFET102 and the fourth MOSFET104 to discharge voltage through the driving circuit 300, so as to continuously output the set voltage by using the stored voltage energy; under the condition that the voltage value of the output end of the voltage stabilizing and rectifying circuit 100 is detected not to exceed the set voltage, the voltage stabilizing and controlling circuit 200 stores the voltage energy rectified and output by the third MOSFET103 so as to output the stable and continuous set voltage. Therefore, the technical scheme provided by the embodiment can be used for providing controllable stable voltage, adjusting the output voltage of the voltage stabilization control circuit 200 in real time, and further setting a corresponding voltage stabilizing circuit for each power supply by using a limited circuit, so that the design cost of the circuit can be reduced.

In an embodiment of the invention, as shown in fig. 4, the voltage stabilizing circuit may further include: the voltage stabilizing rectification circuit 100 includes: a first diode 105, a second diode 106, a third diode 107, a fourth diode 108, a first switch 109, and a second switch 110;

the anode of the first diode 105 is electrically connected with the cathode of the second diode 106, and the cathode of the first diode 105 is electrically connected with the cathode of the third diode 107;

the cathode of the second diode 106 is further electrically connected to the first end of the first switch 109 and the first connection end of the first connection end, respectively, and the anode of the second diode 106 is electrically connected to the second end of the first switch 109 and is used for grounding; the first circuit connection end is any one of the power connection ends of the generator;

the cathode of the third diode 107 is further electrically connected with the voltage regulation control circuit 200, and the anode of the third diode 107 is electrically connected with the cathode of the fourth diode 108;

the cathode of the fourth diode 108 is further electrically connected to the first end of the second switch 110 and the second electrical connection end, respectively, and the anode of the fourth diode 108 is electrically connected to the second end of the second switch 110 and is used for grounding;

the first switch 109 and the second switch 110 are also electrically connected with the voltage regulation control circuit 200;

the voltage stabilizing control circuit 200 is configured to detect a voltage value of a cathode of the third diode 107, and when detecting that the voltage value of the cathode of the third diode 107 exceeds the preset voltage and when detecting that the first power connection end outputs a high level, control the first switch 109 to be turned on to discharge a level on a circuit where the first power connection end is located; when the second electric connection terminal is detected to output a high level, the second switch 110 is controlled to be closed so as to discharge the level of the circuit where the second electric connection terminal is located.

When the brushless generator rotates at a high speed, at least one path of alternating voltage is output from the brushless generator, each path of alternating voltage passes through a bridge formed by the first diode 105, the second diode 106, the third diode 107 and the fourth diode 108, the alternating voltage is rectified into direct current voltage by the first diode 105 and the third diode 107, the direct current voltage is transmitted to the stabilization control circuit, when the stabilization control circuit detects that the output direct current voltage is lower than a set threshold value, the voltage on the first stabilization capacitor is considered to exceed the set voltage, and at this time, the driving circuit 300 is required to control the first switch 109 and the second switch 110 to trigger the diodes in the voltage stabilization rectification circuit 100 to release the voltage.

For each stable rectifying circuit, when the first switch 109 is closed, the high level of the first connection end passes through the first switch 109 and then the fourth diode 108, and the voltage is poured back to one path of coil corresponding to the stable rectifying circuit in the brushless generator.

Meanwhile, when the first power connection end outputs a high level and the second power connection end outputs a low level, the control circuit controls the first switch 109 to be closed, and electric energy at the first power connection end is discharged.

When the second power connection terminal outputs a high level and the first power connection terminal outputs a low level, the second switch 110 is controlled to be closed, and the electric energy at the second power connection terminal is discharged.

It can be seen that in the technical solution provided in the embodiment of the present invention, the anode of a diode of the present embodiment is electrically connected to the cathode of the second diode 106, and the cathode of the first diode 105 is electrically connected to the cathode of the third diode 107; the cathode of the second diode 106 is also electrically connected to the first end of the first switch 109 and the first connection end of the first connection end, respectively, and the anode of the second diode 106 is electrically connected to the second end of the first switch 109 and is used for grounding; the cathode of the third diode 107 is also electrically connected with the voltage regulation control circuit 200, and the anode of the third diode 107 is electrically connected with the cathode of the fourth diode 108; the cathode of the fourth diode 108 is also electrically connected to the first end and the second electrical connection end of the second switch 110, respectively, and the anode of the fourth diode 108 is electrically connected to the second end of the second switch 110 and is used for grounding; the first switch 109 and the second switch 110 are also electrically connected to the voltage stabilization control circuit 200. It can be seen that, in the case that the voltage stabilizing control circuit 200 detects that the voltage value of the cathode of the third diode 107 exceeds the preset voltage, when the voltage stabilizing control circuit 200 detects that the first electrical connection terminal outputs a high level, the voltage stabilizing control circuit 200 controls the first switch 109 to be closed, so as to discharge the level of the circuit where the first electrical connection terminal is located, and prevent the voltage output by the voltage stabilizing and rectifying circuit 100 from being too high; when the voltage stabilizing control circuit 200 detects that the second electrical connection terminal outputs a high level, the second switch 110 is controlled to be closed to discharge the level of the circuit where the second electrical connection terminal is located, so as to prevent the voltage output by the voltage stabilizing and rectifying circuit 100 from being too high. Therefore, the technical scheme provided by the embodiment can be applied to not only provide controllable stable voltage, but also adjust the output voltage of the voltage stabilization control circuit 200 in real time.

In one embodiment of the present invention, as shown in fig. 4 and 5, the voltage regulation control circuit 200 includes: a voltage acquisition circuit 210 and a voltage regulation control circuit 220;

the voltage acquisition circuit 210 includes: a voltage stabilizing capacitor 221, a first resistor 212, and a second resistor 213;

a first end of the voltage stabilizing capacitor 221 and a first end of the first resistor 212 are electrically connected to an output end of the voltage stabilizing rectification circuit 100, respectively, and are configured to output the set voltage, and a second end of the voltage stabilizing capacitor 221 is grounded;

a second end of the first resistor 212 is electrically connected with a first end of the second resistor 213;

the first end of the second resistor 213 is further electrically connected to the input end of the voltage regulation control circuit 220, and the second end of the second resistor 213 is used for grounding;

the output end of the voltage regulation control circuit 220 is electrically connected with the driving circuit 300, the voltage regulation control circuit 220 is used for detecting the voltage value of the input end connected to the voltage regulation control circuit 220, and the driving circuit 300 is started to trigger the voltage stabilization rectification circuit 100 to discharge voltage under the condition that the voltage value of the input end of the voltage regulation control circuit 220 is detected to exceed a set threshold value; and when detecting that the voltage value at the input end of the voltage regulation control circuit 220 does not exceed a set threshold value, the voltage stabilizing capacitor 221 stores the voltage energy output by the voltage stabilizing rectification circuit 100 and continuously outputs the set voltage.

The voltage regulation control circuit interface in fig. 4 and 5 is an interface for connecting the voltage acquisition circuit with the voltage regulation control circuit.

In this embodiment, the first resistor 212 and the second resistor 213 may be configured to divide the voltage at the output end of the voltage acquisition circuit 210, and the divided voltage is transmitted to the voltage regulation control circuit 220, and the voltage detected by the voltage regulation control circuit 220, that is, the voltage at the input end of the voltage regulation control circuit 220 according to this embodiment.

The value of the set threshold is related to the set voltage, the first resistor 212 and the second resistor 213, and the value of the set threshold satisfies the following relation:

the set threshold is the set voltage/(the resistance of the first resistor 212 + the resistance of the second resistor 213).

When the voltage stabilizing rectification circuit 100 is a circuit composed of MOSFETs, the first end of the voltage stabilizing capacitor 221 and the first end of the first resistor 212 are electrically connected to the drain of the third MOSFET103, respectively, and the voltage stabilizing capacitor 221 stores the voltage energy output by the third MOSFET103 when it is detected that the voltage value at the input terminal of the voltage regulating control circuit 220 does not exceed a set threshold value.

When the regulator rectifier circuit 100 is a circuit formed by diodes, the first end of the regulator capacitor 221 and the first end of the first resistor 212 are electrically connected to the cathode of the third diode 107, respectively, and when it is detected that the voltage value at the input terminal of the voltage regulation control circuit 220 does not exceed the set threshold, the regulator capacitor 221 stores the voltage energy output from the cathode of the third diode 107.

Taking the voltage stabilizing and rectifying circuit 100 as an example of a circuit composed of MOSFETs, the working principle of the present embodiment is as follows: when the voltage regulating control circuit 220 detects that the voltage value at the input end of the voltage regulating control circuit is higher than the set threshold value, the control circuit starts the driving circuit 300 to control the second MOSFET and the fourth MOSFET in the voltage stabilizing and rectifying circuit 100 to discharge voltage, the voltage stabilizing capacitor 221 is not charged any more, namely no voltage energy is stored any more, the voltage energy stored in the voltage stabilizing capacitor 221 is consumed by the connected load, at the moment, the control circuit controls the MOSFET in the voltage stabilizing and rectifying circuit 100 to be conducted, the current generated by the voltage regulating control circuit 220 is directly short-circuited with the ground, the released current returns to the coil of the alternating current generator through the ground plane, at the moment, the voltage is reduced, when the control circuit detects that the voltage value at the input end of the voltage regulating control circuit is not higher than the set threshold value, the voltage regulating control circuit 220 does not send a control signal to the driving circuit 300 any more, at the moment, the second MOSFET and the fourth MOSFET are not conducted, the alternating current voltage, and the output terminal of the third MOSFET continuously charges the voltage stabilizing capacitor 221, and the voltage stabilizing capacitor 221 continuously stores the voltage energy, thereby achieving the purpose of providing a stable and continuous stable voltage.

As can be seen from the above analysis, the voltage-stabilizing capacitor 221 needs to store voltage energy and provide a continuous voltage for the external load, so the voltage-stabilizing capacitor 221 needs a larger voltage energy storage function, the magnitude of the stored voltage energy of the voltage-stabilizing capacitor 221 is related to the magnitude of the voltage required by the external load, the larger the voltage required by the external load is, the larger the functional requirement of the voltage-stabilizing capacitor 221 for storing voltage energy is, the smaller the voltage required by the external load is, the smaller the functional requirement of the voltage-stabilizing capacitor 221 for storing voltage energy is, and the voltage-stabilizing capacitor 221 can be generally 28000 μ F or more.

It can be seen that in the technical solution provided in the embodiment of the present invention, a first end of the voltage stabilizing capacitor 221 and a first end of the first resistor 212 are respectively electrically connected to an output end of the voltage stabilizing rectification circuit 100 and are configured to output the set voltage, and a second end of the voltage stabilizing capacitor 221 is grounded; a second end of the first resistor 212 is electrically connected with a first end of the second resistor 213; the first end of the second resistor 213 is further electrically connected to the input end of the voltage regulation control circuit 220, and the second end of the second resistor 213 is used for grounding; the output end of the voltage regulation control circuit 220 is electrically connected with the driving circuit 300. Therefore, the voltage stabilizing circuit provided by the embodiment of the invention can start the driving circuit 300 to trigger the voltage stabilizing rectification circuit 100 to discharge the voltage through the voltage regulating control circuit 220 according to the detected voltage, so as to provide a continuous and stable set voltage for the external load. In addition, when the voltage energy storage function of the voltage stabilizing capacitor 221 is very large, the voltage boosting and voltage reducing processes of the stored voltage energy become slow, which is beneficial to the control circuit to rapidly control the output voltage of the voltage stabilizing and rectifying circuit 100, and the voltage output by the voltage collecting circuit 210 is not zigzag, so that the voltage collecting circuit 210 can further output controllable stable voltage.

Based on that there may be an unstable small text wave phenomenon in the voltage value output by the regulated rectifier circuit 100, in an embodiment of the present invention, the voltage acquisition circuit 210 may further include: a first capacitor;

a first end of the first capacitor is electrically connected to a first end of the voltage stabilizing capacitor 221, and a second end of the first capacitor is used for grounding.

In order to make the current of the external load and the ripple that brings small enough, consequently, adopt the stable electric capacity of storing more pressure energy, like this, stable electric capacity just can filter the low frequency ripples, in view of this, first electric capacity can adopt the electric capacity that can filter the low capacitance of high frequency ripples, also filters little literal, like this, voltage acquisition circuit 210 both can filter the high frequency ripples and can filter the low frequency ripples.

It can be seen that in the technical solution provided in this embodiment, a first end of the first capacitor is electrically connected to a first end of the voltage stabilizing capacitor 221, and a second end of the first capacitor is used for grounding, so that a small ripple in the voltage value output by the voltage stabilizing and rectifying circuit 100 can be removed, and a more stable output voltage is provided for the load.

Although the set voltage output by the voltage value output by the voltage stabilizing capacitor 221 can meet the voltage requirement of the external load, in practical applications, the output set voltage may have a small fluctuation phenomenon, and based on this, in an embodiment of the present invention, the voltage collecting circuit 210 may further include: a first zener diode;

the cathode of the first zener diode is electrically connected to the first end of the zener capacitor 221 and the first end of the first resistor 212, respectively, and the anode of the first zener diode is used for grounding.

After the first zener diode is connected to the zener control circuit 200, if the voltage at each point in the circuit fluctuates due to the fluctuation of the voltage output by the generator or other reasons, the first zener diode can provide a more stable voltage for the load.

It can be seen that in the technical solution provided in the embodiment of the present invention, the cathode of the first zener diode is electrically connected to the first end of the zener capacitor 221 and the first end of the first resistor 212, respectively, and the anode of the first zener diode is used for grounding; the first voltage stabilizing diode can provide more stable set voltage for an external load.

In an embodiment of the present invention, as shown in fig. 6, the voltage collecting circuit 210 may further include: the voltage stabilizing circuit further comprises: a level detection circuit 400;

the level detection circuit 400 includes: two monitoring voltage circuits 410, a second capacitor 420, a third capacitor 430, a fourth capacitor 440, an operational amplifier 450, a fifth diode 460, a third resistor 470 and a fourth resistor 480;

each of the monitor voltage circuits 410 includes: a fifth resistor 411, a sixth resistor 412, a seventh resistor 413, a second zener diode 414, and a fifth capacitor 415;

a second end of the fifth resistor 411 is electrically connected to a first end of the sixth resistor 412 and a first end of the seventh resistor 413, respectively;

the first end of the sixth resistor 412 is further electrically connected to the anode of the second zener diode 414 and the first end of the fifth capacitor 415, respectively, and the second end of the sixth resistor 412, the cathode of the second zener diode 414, and the second end of the fifth capacitor 415 are all used for grounding;

in one of the voltage monitoring circuits 410, a first terminal of the fifth resistor 411 is electrically connected to a second connection terminal of the first connection terminals; a second end of the sixth resistor 412 is electrically connected to a negative input of the operational amplifier 450;

in another voltage monitoring circuit 410, a first terminal of the fifth resistor 411 is electrically connected to a first electrical terminal of the first electrical terminals; a second end of the sixth resistor 412 is electrically connected to a non-inverting input terminal of the operational amplifier 450;

a first output terminal of the operational amplifier 450 is electrically connected to a first terminal of the second capacitor 420, and a second output terminal of the operational amplifier 450 is electrically connected to a first terminal of the third capacitor 430; a third output end of the operational amplifier 450 is electrically connected with the positive electrode of the fifth diode 460;

the first end of the second capacitor 420 is further configured to be electrically connected to a dc power supply outputting a first preset value, and the second end of the second capacitor 420 is configured to be grounded;

the first end of the third capacitor 430 is further configured to be electrically connected to a dc power supply outputting a first preset value, and the second end of the fourth capacitor 440 is electrically connected to ground;

a cathode of the fifth diode 460 is electrically connected to a first end of the third resistor 470 and a first end of the fourth resistor 480, respectively;

a second end of the third resistor 470 is electrically connected to a first end of the fourth capacitor 440 and the voltage regulation control circuit 220, respectively;

the second terminal of the fourth resistor 480 and the second terminal of the third capacitor 430 are both used for grounding.

The first preset value is a dc power supply with 5V, such as a dc power supply identifier VCC _ -5V _ ACDC used for representing that the output is 5V in fig. 6.

The voltage regulation control circuit interface in fig. 6 is an interface for electrically connecting the level detection circuit and the voltage regulation control circuit.

The first electric connection end and the second electric connection end are sent to the operational amplifier 450 for comparison after being subjected to voltage division through the monitoring voltage circuit 410, when the voltage of the second electric connection end is larger than that of the first electric connection end, the operational amplifier 450 outputs a high level, and the output high level is sent to the first pin of the control circuit and used for identifying the phase of an alternating current level sent by the brushless generator at present, so that whether the first electric connection end is the high level or the second electric connection end is the high level is also identified.

It can be seen that in the technical solution provided in the embodiment of the present invention, in one voltage monitoring circuit 410, the first end of the fifth resistor 411 is electrically connected to the second electrical connection end of the first electrical connection end; a second terminal of the sixth resistor 412 is electrically connected to the negative input terminal of the operational amplifier 450; in the other monitor voltage circuit 410, a first terminal of the fifth resistor 411 is electrically connected to a first electrical terminal of the first electrical terminals; a second end of the sixth resistor 412 is electrically connected to the non-inverting input terminal of the operational amplifier 450; a first output end of the operational amplifier 450 is electrically connected with a first end of the second capacitor 420, and a second output end of the operational amplifier 450 is electrically connected with a first end of the third capacitor 430; a third output terminal of the operational amplifier 450 is electrically connected to the positive electrode of the fifth diode 460; the first end of the second capacitor 420 is further configured to be electrically connected to a dc power supply outputting a first preset value, and the second end of the second capacitor 420 is configured to be grounded; the first end of the third capacitor 430 is further configured to be electrically connected to a dc power supply outputting a first preset value, and the second end of the fourth capacitor 440 is electrically connected to ground; the cathode of the fifth diode 460 is electrically connected to the first end of the third resistor 470 and the first end of the fourth resistor 480, respectively; a second end of the third resistor 470 is electrically connected to a first end of the fourth capacitor 440 and the voltage regulation control circuit 220, respectively; the second terminal of the fourth resistor 480 and the second terminal of the third capacitor 430 are both used for grounding. Therefore, whether the first power connection end or the second power connection end is in a high level state can be determined by applying the technical scheme provided by the embodiment of the invention, so that a basis for discharging the voltage at the first power connection end or the voltage at the second power connection end is accurately provided for the control circuit.

In an embodiment of the present invention, as shown in fig. 7, the driving circuit 300 may include: a driving chip 301, an eighth resistor 302, a ninth resistor 303, a sixth capacitor 304 and a seventh capacitor 305;

a first pin of the driving chip 301 is electrically connected to a first output terminal of the voltage regulation control circuit 220; the second pin of the driving chip 301 is used for grounding; a third pin of the driving chip 301 is electrically connected to a second output terminal of the voltage regulation control circuit 220; a fourth pin of the driving chip 301 is electrically connected to a first end of the eighth resistor 302, and a fifth pin of the driving chip 301 is electrically connected to a first end of the sixth capacitor 304 and a first end of the seventh capacitor 305, respectively, and is both used for being electrically connected to a power supply that outputs a second preset value; a sixth pin of the driving chip 301 is electrically connected to a first end of the ninth resistor 303;

a second terminal of the eighth resistor 302 is electrically connected to the gate of the fourth MOSFET 104;

a second terminal of the ninth resistor 303 is electrically connected to the gate of the second MOSFET 102;

a second terminal of the sixth capacitor 304 and a second terminal of the seventh capacitor 305 are both used for grounding;

the driving chip 301 is configured to trigger the second MOSFET102 and the fourth MOSFET104 to discharge voltage according to a control signal sent by the voltage regulation control circuit 220 and used for triggering the voltage regulation and rectification circuit 100.

Two voltage stabilizing rectification circuit interfaces in fig. 7, one being an interface for electrically connecting the second end of the eighth resistor 302 with the gate of the fourth MOSFET104 in the voltage stabilizing rectification circuit 100; the other voltage stabilizing and rectifying circuit interface is an interface for electrically connecting the second terminal of the ninth resistor 303 with the gate of the second MOSFET102 in the voltage stabilizing and rectifying circuit 100.

The general MOSFET has a high start voltage, and the MOSFET is difficult to start due to the low voltage output by the voltage regulation control circuit 220. Based on this, the present embodiment provides the driving circuit 300.

After the driving chip 301 receives the control signal sent by the voltage regulation control circuit 220 and used for triggering the second MOSFET102 and the fourth MOSFET104 and outputting the control signal, the driving chip 301 amplifies the received control signal, that is, converts the low voltage sent by the control circuit into the high voltage required by the MOSFET to be started, so as to achieve the purpose of starting the second MOSFET102 and the fourth MOSFET104 to work, thereby completing the purpose of starting the voltage regulation and rectification circuit 100 to discharge voltage.

Exemplarily, the control signal output by the voltage regulation control circuit 220, i.e. the first preset value, is generally only 5V, and cannot completely turn on the MOSFET in the voltage regulation control circuit 200, based on this, after the control signal is sent to one driving chip 301, the driving chip 301 will amplify two control signals of 5V into control signals of 12V, respectively, and the two amplified control signals are sent to the gates of the second MOSFET102 and the fourth MOSFET104 in the control circuit, so as to trigger the second MOSFET102 and the fourth MOSFET104 in the voltage regulation control circuit 200 to turn on the function of the bleed-off voltage.

In summary, the second predetermined value can be a dc voltage of 12V, such as VCC _12V in fig. 7.

It can be seen that in one technical solution of the embodiment of the present invention, the first pin of the driving chip 301 is electrically connected to the first output terminal of the voltage regulation control circuit 220; the second pin of the driving chip 301 is used for grounding; a third pin of the driving chip 301 is electrically connected to a second output terminal of the voltage regulation control circuit 220; a second terminal of the eighth resistor 302 is electrically connected to the gate of the fourth MOSFET 104; a second end of the ninth resistor is electrically connected to the gate of the second MOSFET 102; the driving chip 301 may start the second MOSFET102 and the fourth MOSFET104 to discharge the voltage according to the signal instruction of the voltage regulation control circuit 220, so that the voltage acquisition circuit 210 continuously outputs the predetermined voltage.

In one embodiment of the present invention, as shown in fig. 8, the voltage regulation control circuit 220 may include a single chip 221 and a tenth resistor 222,

wherein, a first pin of the single chip 221 is electrically connected to a first end of the tenth resistor 222, a second end of the tenth resistor is used for being electrically connected to a power supply and for resetting, a second pin of the single chip 221 is used for being electrically connected to the power supply, a third pin of the single chip 221 is electrically connected to a second end of the third resistor 470 and a first end of the fourth capacitor 440, respectively, a fourth pin of the single chip 221 is electrically connected to a first pin of the driving chip 301, a fifth pin of the single chip 221 is electrically connected to a third pin of the driving chip 301, a sixth pin of the single chip 221 is electrically connected to a first end of the second resistor 213 in the voltage acquisition circuit 210, and is configured to send the control signal to the driving chip 301 according to the detected voltage value output by the access voltage acquisition circuit 210 and amplified by the driving chip 301, and triggering the voltage stabilizing and rectifying circuit 100 to discharge voltage, so that the voltage acquisition circuit 210 continuously outputs the set voltage, and a seventh pin of the single chip microcomputer is used for grounding.

The level detection circuit interface in fig. 8 is an interface for electrically connecting the third pin of the single chip microcomputer 221 with the second end of the third resistor 470 and the first end of the fourth capacitor 440 in the level detection circuit; the voltage acquisition circuit interface is an interface used for electrically connecting a sixth pin of the singlechip 221 with a first end of a second resistor 213 in the voltage acquisition circuit 210; the interface to which the third pin of the driving chip belongs is an interface for electrically connecting the fifth pin of the single chip 221 and the third pin of the driving chip 301; the interface to which the first pin of the driver chip belongs is an interface for electrically connecting the fourth pin of the single chip 221 and the first pin of the driver chip 301.

In addition, the power supply in the above embodiment may be a 5V power supply, such as VCC _5V labeled in fig. 8.

The third pin of the single chip 221 is electrically connected to the second terminal of the third resistor 470 and the first terminal of the fourth capacitor 440, respectively, and the level of the first electrical connection terminal and the level of the second electrical connection terminal can be compared, that is, the single chip 221 can determine whether the first electrical connection terminal is a high level or the first electrical connection terminal is a high level.

In each set of voltage stabilizing and rectifying circuit 100, the voltage acquisition circuit 210 acquires the voltage value at the output end of the voltage stabilizing and rectifying circuit 100 in real time, the single chip microcomputer 221 detects whether the voltage value at the output end of the voltage acquisition circuit 210 exceeds a set threshold value or not in real time, if the acquired voltage value exceeds the set threshold value, a control signal for triggering the voltage discharging of the voltage stabilizing and rectifying circuit 100 is sent to the driving chip 301, the voltage discharging of the voltage stabilizing and rectifying circuit 100 is triggered after the control signal is amplified by the driving chip 301, and if the acquired voltage value does not exceed the set threshold value, the single chip microcomputer 221 cannot trigger the driving chip to start the voltage discharging of the voltage stabilizing and rectifying circuit 100, namely, the single chip microcomputer 221 does not perform any control operation and only monitors the.

When the voltage stabilizing and rectifying circuit 100 adopts a circuit including MOSFETs in the above embodiment, if the collected voltage value exceeds the set threshold, the driving chip is turned on to trigger the second MOSFET and the fourth MOSFET to conduct and discharge the voltage, if the collected voltage value does not exceed the set threshold, the second MOSFET and the fourth MOSFET are not conducted, and the output terminal of the third MOSFET continues to charge the stabilizing capacitor until the collected voltage value exceeds the set threshold.

The voltage stabilizing capacitor 221 in the voltage collecting circuit 210 stores the voltage energy output by the voltage stabilizing rectifying circuit 100, and continues to output a stable and continuous set voltage.

Illustratively, the control signal output by the single chip microcomputer 221 is only 5V, and the MOSFET in the voltage regulation control circuit 200 cannot be completely turned on, based on this, after the control signal is sent to one driving chip 301, the driving chip 301 amplifies two control signals of 5V output by the pin of the single chip microcomputer 221 respectively to convert them into control signals of 12V, and the two amplified control signals are sent to the gates of the second MOSFET102 and the fourth MOSFET104 in the control circuit, and are used for controlling the MOSFET in the voltage regulation control circuit 200 to turn on the function of the bleed-off voltage.

It can be seen that in the technical solution of the embodiment of the present invention, the fourth pin of the single chip 221 is electrically connected to the first pin of the driving chip 301, the fifth pin of the single chip 221 is electrically connected to the third pin of the driving chip 301, and the sixth pin of the single chip 221 is electrically connected to the first end of the second resistor 213 in the voltage acquisition circuit 210. Therefore, the single chip 221 can detect the voltage value at the input end of the voltage stabilizing circuit in real time, and trigger the voltage discharging of the voltage stabilizing rectification circuit 100 by sending a control signal to the driving chip 301, so as to provide a controllable stable voltage.

In an embodiment of the present invention, as shown in fig. 9, the voltage regulation control circuit 220 may further include: two decoupling circuits 223;

each decoupling circuit 223 includes: an eighth capacitor 2231, an eleventh resistor 2232, and a twelfth resistor 2233;

a first end of the eighth capacitor 2231 is electrically connected to a first end of the eleventh resistor 2232 and a first end of the twelfth resistor 2233;

a second end of the eighth capacitor 2231 and a second end of the eleventh resistor 2232 are both configured to be grounded;

in a decoupling circuit 223, a first end of the eighth capacitor 2231 is further electrically connected to a fourth pin of the single chip 221, and a second end of the twelfth resistor 2233 is electrically connected to the first pin of the driver chip 301;

in another decoupling circuit 223, a first end of the eighth capacitor 2231 is further electrically connected to a fifth pin of the single chip 221, and a second end of the twelfth resistor 2233 is electrically connected to a third pin of the driver chip 301.

The working principle of the decoupling circuit 223 is as follows: when the fourth pin and the fifth pin of the mcu 221 do not output any control signal, the eleventh resistor 2232 is grounded to lock the level to 0V.

When the control signals output from the fourth pin and the fifth pin of the mcu 221 generate interference pulse signals, the eighth capacitor 2231 charges the stabilizing capacitor 221 to absorb the interference pulse signals. Meanwhile, the eleventh resistor 2232 leads the interference pulse signal to the signal ground to avoid signal false triggering.

When the control signal output by the fourth pin of the single chip 221 is at a high level, the eighth capacitor 2231 absorbs noise signals through charging and discharging, and suppresses noise on the control signal, and the twelfth resistor 2233 may also prevent noise generated by reflection of the control signal, so as to ensure stability of the control signal when the control signal reaches the driver chip 301.

It can be seen that in the technical solution of the embodiment of the present invention, in a decoupling circuit 223 of this embodiment, a first end of the seventh capacitor 305 is further electrically connected to a fourth pin of the single chip microcomputer 221, a second end of the twelfth resistor 2233 is electrically connected to the first pin of the driving chip 301, so as to filter noise waves and pulse waves in a control signal output by the fourth pin of the single chip microcomputer 221, and prevent the reflection of the control signal from causing interference to the single chip microcomputer 221; in another decoupling circuit 223, the first end of the seventh capacitor 305 is further electrically connected to the fifth pin of the single chip 221, the second end of the twelfth resistor 2233 is electrically connected to the third pin of the driver chip 301, and the noise and pulse waves in the control signal output by the fifth pin of the single chip 221 are filtered, so that the interference caused by the reflection of the control signal on the single chip 221 is prevented, and the control signal output by the single chip 221 is prevented from being triggered by mistake.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the device.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.