阅读说明：本技术 一种正脉冲电源发生装置 (Positive pulse power generating device ) 是由 王威 张兴亮 于 2019-12-03 设计创作，主要内容包括：本申请公开了一种正脉冲电源发生装置,包括整流滤波电路,用于将输入的单相交流电转换为直流电为储能电容充电；脉冲信号源,用于基于正脉冲电源发生装置的目标脉冲宽度与目标工作频率输出相应的控制信号至驱动电路；驱动电路,用于基于所述控制信号生成相应的驱动信号并将所述驱动信号输出至半导体开关,以控制所述半导体开关的开关状态；所述半导体开关,用于通过自身导通或关断控制所述储能电容的充放电状态；脉冲信号输出电路,用于输出宽度为所述目标宽度的脉冲信号至负载。该正脉冲电源发生装置能够实现脉冲信号宽度与工作频率可调,满足应用需求。(The application discloses a positive pulse power generation device, which comprises a rectification filter circuit, a positive pulse power generation circuit and a negative pulse power generation circuit, wherein the rectification filter circuit is used for converting input single-phase alternating current into direct current to charge an energy storage capacitor; the pulse signal source is used for outputting a corresponding control signal to the driving circuit based on the target pulse width and the target working frequency of the positive pulse power supply generating device; the driving circuit is used for generating a corresponding driving signal based on the control signal and outputting the driving signal to the semiconductor switch so as to control the switching state of the semiconductor switch; the semiconductor switch is used for controlling the charging and discharging state of the energy storage capacitor through self conduction or self turn-off; and the pulse signal output circuit is used for outputting the pulse signal with the width of the target width to a load. The positive pulse power supply generating device can realize that the pulse signal width and the working frequency are adjustable, and meets the application requirements.)

1. A positive pulse power generating apparatus, comprising:

the rectification filter circuit is used for converting the input single-phase alternating current into direct current to charge the energy storage capacitor;

the pulse signal source is used for outputting a corresponding control signal to the driving circuit based on the target pulse width and the target working frequency of the positive pulse power supply generating device;

the driving circuit is used for generating a corresponding driving signal based on the control signal and outputting the driving signal to the semiconductor switch so as to control the switching state of the semiconductor switch;

the semiconductor switch is used for controlling the charging and discharging state of the energy storage capacitor through self conduction or self turn-off;

and the pulse signal output circuit is used for outputting the pulse signal with the width of the target width to a load.

2. The positive pulse power generation device according to claim 1, wherein the rectification filter circuit comprises:

a filter, a rectifier and a filter capacitor; the input end of the filter is connected with an alternating current power supply, the output end of the filter is connected with the input end of the rectifier, the output end of the rectifier is connected with the first end of the energy storage capacitor, one end of the filter capacitor is connected with the output end of the rectifier, and the other end of the filter capacitor is grounded.

3. The positive pulse power generating apparatus according to claim 1, wherein the pulse signal source comprises:

the single chip microcomputer and the first diode; the first diode is connected in series with the output end of the single chip microcomputer.

4. The positive pulse power generation device according to claim 1, wherein the semiconductor switch is specifically an IGBT tube.

5. The positive-pulse power generating apparatus according to claim 4, wherein the drive circuit comprises:

an EXB series driver and a first resistor; and a driving input pin of the EXB series driver is connected with the pulse signal source, and a driving output pin of the EXB series driver is connected with the gate of the IGBT tube after being connected with the first resistor in series.

6. The positive-pulse power generating apparatus according to claim 1, wherein the pulse signal output circuit comprises:

the pulse transformer, the first capacitor and the second resistor;

one end of the primary side of the pulse transformer is connected with the second end of the energy storage capacitor, the other end of the primary side of the pulse transformer is grounded, one end of the secondary side of the pulse transformer is connected with the load after being connected with the first capacitor in series, the other end of the secondary side of the pulse transformer is directly connected with the load, and the second resistor is connected with the secondary side of the pulse transformer in parallel.

7. The positive pulse power generation device according to claim 5, further comprising:

and the switch protection circuit is used for absorbing the inverse peak voltage generated by the primary side of the pulse transformer.

8. The positive pulse power generation device according to claim 6, wherein the switch protection circuit comprises:

the second diode, the second capacitor and the third resistor; the second diode is connected with the third resistor in parallel, the common end where the anode of the second diode is located is connected with the drain electrode of the IGBT tube and the first end of the energy storage capacitor, and the common end where the cathode of the second diode is located is connected with the second capacitor in series and then is grounded.

Technical Field

The application relates to the technical field of pulse power supplies, in particular to a positive pulse power supply generating device.

Background

The pulse power supply is divided into a positive pulse power supply and a negative pulse power supply. When the pulse power supply is used for electroplating gold, silver, nickel, tin and alloy, the functionality of the plating layer can be obviously improved; when the pulse power supply is used for protective-decorative electroplating, such as decorative gold, the coating has uniform color, good brightness and strong corrosion resistance; when the pulse power supply is used for noble metal purification, the purity of the noble metal can be higher. Therefore, the pulse power supply is superior to the traditional electroplating power supply and becomes the development direction of the electroplating power supply. With the increasing demand of users, how to provide a pulse power source with adjustable pulse signal width and working frequency has become a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The application aims to provide a positive pulse power supply generating device which can realize adjustability of pulse signal width and working frequency.

In order to solve the above technical problem, the present application provides a positive pulse power generating device, including:

the rectification filter circuit is used for converting the input single-phase alternating current into direct current to charge the energy storage capacitor;

the pulse signal source is used for outputting a corresponding control signal to the driving circuit based on the target pulse width and the target working frequency of the positive pulse power supply generating device;

the driving circuit is used for generating a corresponding driving signal based on the control signal and outputting the driving signal to the semiconductor switch so as to control the switching state of the semiconductor switch;

the semiconductor switch is used for controlling the charging and discharging state of the energy storage capacitor through self conduction or self turn-off;

and the pulse signal output circuit is used for outputting the pulse signal with the width of the target width to a load.

Optionally, the rectification filter circuit includes:

a filter, a rectifier and a filter capacitor; the input end of the filter is connected with an alternating current power supply, the output end of the filter is connected with the input end of the rectifier, the output end of the rectifier is connected with the first end of the energy storage capacitor, one end of the filter capacitor is connected with the output end of the rectifier, and the other end of the filter capacitor is grounded.

Optionally, the pulse signal source includes:

the single chip microcomputer and the first diode; the first diode is connected in series with the output end of the single chip microcomputer.

Optionally, the semiconductor switch is specifically an IGBT tube.

Optionally, the driving circuit includes:

an EXB series driver and a first resistor; and a driving input pin of the EXB series driver is connected with the pulse signal source, and a driving output pin of the EXB series driver is connected with the gate of the IGBT tube after being connected with the first resistor in series.

Optionally, the pulse signal output circuit includes:

the pulse transformer, the first capacitor and the second resistor;

one end of the primary side of the pulse transformer is connected with the second end of the energy storage capacitor, the other end of the primary side of the pulse transformer is grounded, one end of the secondary side of the pulse transformer is connected with the load after being connected with the first capacitor in series, the other end of the secondary side of the pulse transformer is directly connected with the load, and the second resistor is connected with the secondary side of the pulse transformer in parallel.

Optionally, the method further includes:

and the switch protection circuit is used for absorbing the inverse peak voltage generated by the primary side of the pulse transformer.

Optionally, the switch protection circuit includes:

the second diode, the second capacitor and the third resistor; the second diode is connected with the third resistor in parallel, the common end where the anode of the second diode is located is connected with the drain electrode of the IGBT tube and the first end of the energy storage capacitor, and the common end where the cathode of the second diode is located is connected with the second capacitor in series and then is grounded.

The positive pulse power generation device comprises a rectification filter circuit, a positive pulse power generation circuit and a negative pulse power generation circuit, wherein the rectification filter circuit is used for converting input single-phase alternating current into direct current to charge an energy storage capacitor; the pulse signal source is used for outputting a corresponding control signal to the driving circuit based on the target pulse width and the target working frequency of the positive pulse power supply generating device; the driving circuit is used for generating a corresponding driving signal based on the control signal and outputting the driving signal to the semiconductor switch so as to control the switching state of the semiconductor switch; the semiconductor switch is used for controlling the charging and discharging state of the energy storage capacitor through self conduction or self turn-off; and the pulse signal output circuit is used for outputting the pulse signal with the width of the target width to a load.

Therefore, the positive pulse power supply generating device provided by the application outputs the control signal corresponding to the target pulse width and the working frequency to the driving circuit through the pulse signal source, and then the driving circuit controls the charging and discharging of the energy storage capacitor through the conducting state of the driving semiconductor switch based on the control signal, so that the positive pulse power supply generating device works at the corresponding working frequency and outputs the pulse signal of the corresponding pulse width, the adjustment of the pulse width and the working frequency of the positive pulse power supply generating device can be realized through adjusting the control signal output by the pulse signal source, and the requirement of adjustable pulse width and working frequency is met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram of a positive pulse power generator according to an embodiment of the present disclosure;

fig. 2 is another positive pulse power generating device according to an embodiment of the present application.

Detailed Description

The core of the application is to provide a positive pulse power supply generating device, which can realize that the width and the working frequency of a pulse signal are adjustable.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.

Referring to fig. 1, fig. 1 is a schematic diagram of a positive pulse power generator according to an embodiment of the present disclosure; referring to fig. 1, the positive pulse power generating apparatus includes:

the rectifier filter circuit 10 is used for converting the input single-phase alternating current into direct current to charge the energy storage capacitor 20; the pulse signal source 30 is used for outputting a corresponding control signal to the driving circuit 40 based on the target pulse width and the target working frequency of the positive pulse power supply generating device; a driving circuit 40 for generating a corresponding driving signal based on the control signal and outputting the driving signal to the semiconductor switch 50 to control the switching state of the semiconductor switch 50; a semiconductor switch 50 for controlling the charging and discharging state of the energy storage capacitor 20 by turning itself on or off; the pulse signal output circuit 60 is configured to output a pulse signal having a target width to a load.

Specifically, the input end of the rectifying and filtering circuit 10 is connected to an ac power supply, and the output end is connected to an energy storage capacitor 20 (specifically, a high-voltage non-inductive capacitor) for converting an input single-phase ac power into a dc power to charge the energy storage capacitor 20.

Referring to fig. 2, in a specific embodiment, the rectifying and filtering circuit 10 may include a filter, a rectifier and a filter capacitor C1; the input end of the filter is connected with single-phase alternating current, the output end of the filter is connected with the input end of the rectifier, the output end of the rectifier is connected with the first end of the energy storage capacitor 20, one end of the filter capacitor C1 is connected with the output end of the rectifier, and the other end of the filter capacitor C1 is grounded.

The pulse signal source 30 is connected to the driving circuit 40 and is responsible for controlling the pulse width and the operating frequency of the positive pulse power supply generating device. Specifically, the pulse signal source 30 generates and outputs a corresponding control signal to the driving circuit 40 based on the target pulse width and the target operation of the positive pulse power supply generator, so that the driving circuit 40 controls the discharge of the energy storage capacitor 20 by driving the conductive state of the semiconductor switch 50, thereby achieving the purpose of outputting the pulse signal of the target width by the positive pulse power supply generator. Thus, the user can operate the positive pulse power supply generating device at a desired frequency by setting the pulse signal source 30 and output a pulse signal of a desired width.

Referring to fig. 2, in a specific embodiment, the pulse signal source 30 may include a single chip and a first diode D1; the first diode D1 is connected in series with the output end of the single chip microcomputer. Specifically, the output end of the single chip microcomputer is connected with the anode of a first diode D1, the cathode of the first diode D1 is connected with the driving circuit 40, and the control signal output by the single chip microcomputer is output to the driving circuit 40 through the first diode D1. The single-chip microcomputer can specifically adopt an MSP430 single-chip microcomputer.

The driving circuit 40 is respectively connected to the pulse signal source 30 and the semiconductor switch 50, and is configured to receive the control signal output by the pulse signal source 30, generate a corresponding driving signal according to the control signal, and output the driving signal to the semiconductor switch 50 to control the semiconductor switch 50 to turn on or off, so as to control the charging and discharging of the energy storage capacitor 20 by turning on or off the semiconductor switch 50.

Referring to fig. 2, in a specific embodiment, the semiconductor switch 50 is embodied as an IGBT, a gate of the IGBT is connected to the driving circuit 40, a drain of the IGBT is connected to the first end of the energy storage capacitor 20, and a source of the IGBT is grounded. Wherein, the IGBT tube can be a CM300HA-12H IGBT tube.

Referring to fig. 2, in a specific embodiment, the driving circuit 40 may include an EXB series driver and a first resistor R1; the drive input pin of the EXB series driver is connected with the pulse signal source 30, and the drive output pin of the EXB series driver is connected with the gate of the IGBT tube after being connected with the first resistor R1 in series. Specifically, the EXB driver may be an EXB841 driver, a driving input pin (i.e., 15 pins) of the EXB841 driver is connected to the pulse signal source 30, and specifically, with respect to the structure of the pulse signal source 30 described in the foregoing embodiment, the driving input pin of the EXB841 driver is connected to the cathode of the first diode. The 14 pins and the 9 pins of the EXB841 driver are both grounded, and the driving output pin of the EXB841 driver is connected in series with the first resistor R1 and then is connected with the gate of the IGBT tube.

The pulse signal output circuit 60 is connected to the energy storage capacitor 20, and is configured to output a pulse signal with a target width to the load. Specifically, when the semiconductor switch 50 is turned on, the energy storage capacitor 20 is discharged, and the positive pulse power supply generating device generates a pulse voltage, which outputs a pulse signal to the load through the pulse signal output circuit 60.

Also, referring to fig. 2, in a specific embodiment, the pulse signal output circuit 60 may include a pulse transformer Tr, a first capacitor C2, and a second resistor R2; one end of the primary side of the pulse transformer Tr is connected with the second end of the energy storage capacitor 20, the other end of the primary side of the pulse transformer Tr is grounded, one end of the secondary side of the pulse transformer Tr is connected with the load after being connected with the first capacitor C2 in series, the other end of the secondary side of the pulse transformer Tr is directly connected with the load, and the second resistor R2 is connected with the secondary side of the pulse transformer Tr in parallel. The magnetic core of the pulse transformer Tr can be an annular ferrite magnetic core and is wound in sections.

Based on the positive pulse power generation device described in the above embodiments, the operating principle of the positive pulse power generation device is as follows:

during the turn-off period of the semiconductor switch 50, the dc energy storage capacitor 20 obtained after the rectification and filtering processing by the rectification and filtering circuit 10 is charged, after the charging is completed for a period of time, the driving circuit 40 drives the semiconductor switch 50 to be turned on, the energy storage capacitor 20 is discharged by the semiconductor switch 50 to generate a pulse voltage, and the pulse voltage outputs a pulse signal with a required pulse width to a load after passing through the pulse transformer Tr.

Further, during the on period of the semiconductor switch 50, the primary side of the pulse transformer Tr generates a certain inverse peak voltage due to the existence of the leakage inductance and the stray inductance, and therefore, on the basis of the above embodiments, as a specific implementation manner, the positive pulse power supply generating apparatus may further include a switch protection circuit 70 for absorbing the inverse peak voltage generated at the primary side of the pulse transformer Tr.

Also, referring to fig. 2, in a specific embodiment, the switch protection circuit 70 may include a second diode D2, a second capacitor C3, and a third resistor R3; the second diode D2 is connected in parallel with the third resistor R3, the common terminal of the anode of the second diode D2 is connected to the drain of the IGBT and the first terminal of the energy storage capacitor 20, and the common terminal of the cathode of the second diode D2 is connected in series with the second capacitor C3 and then grounded.

It is understood that the specific type of the semiconductor switch 50, the specific structure of the pulse signal source 30, the driving circuit 40, and the like provided in the above embodiments are only one implementation manner provided in the present application, and are not limited thereto, and may be set differently according to the actual application needs.

In summary, the positive pulse power generating device provided by the present application includes a rectifying and filtering circuit, configured to convert an input single-phase ac into a dc to charge an energy storage capacitor; the pulse signal source is used for outputting a corresponding control signal to the driving circuit based on the target pulse width and the target working frequency of the positive pulse power supply generating device; the driving circuit is used for generating a corresponding driving signal based on the control signal and outputting the driving signal to the semiconductor switch so as to control the switching state of the semiconductor switch; the semiconductor switch is used for controlling the charging and discharging state of the energy storage capacitor through self conduction or self turn-off; and the pulse signal output circuit is used for outputting the pulse signal with the width of the target width to a load. The positive pulse power supply generating device outputs a control signal corresponding to a target pulse width and a working frequency to the driving circuit through the pulse signal source, and then the driving circuit controls the charging and discharging of the energy storage capacitor through the conducting state of the driving semiconductor switch based on the control signal, so that the positive pulse power supply generating device works at the corresponding working frequency and outputs a pulse signal of the corresponding pulse width, the adjustment of the pulse width and the working frequency of the positive pulse power supply generating device can be realized through adjusting the control signal output by the pulse signal source, and the requirement of adjustable pulse width and working frequency is met.

Because the situation is complicated and cannot be illustrated by a list, those skilled in the art can appreciate that there can be many examples in combination with the actual situation under the basic principle of the embodiments provided in the present application and that it is within the scope of the present application without sufficient inventive effort.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The positive pulse power generating device provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

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