阅读说明：本技术 一种用于集成制动系统的充电保护装置及车辆 (Charging protection device for integrated brake system and vehicle ) 是由 李丰军 周剑光 王志伟 王君 汪冬亮 于 2021-07-30 设计创作，主要内容包括：本发明公开一种用于集成制动系统的充电保护装置及车辆,该装置包括：电源、集成制动系统中的功率电器、功率电器驱动电路、逻辑控制模块和恒流预充模块；所述功率电器通过所述功率电器驱动电路与所述电源连接,所述功率电器驱动电路上设有滤波电容；所述功率电器驱动电路在所述电源与所述滤波电容之间引出与所述电源连接的预充回路,所述恒流预充模块设置在所述预充回路上；所述恒流预充模块与所述逻辑控制模块连接,用于响应于所述逻辑控制模块发出的预充电指令控制以恒定的电流对所述滤波电容进行充电。本发明通过设置恒流预充模块,解决了电容充电时产生的电流冲击问题,提高了充电电路的稳定性与可靠性,提升了功率电器的使用寿命。(The invention discloses a charging protection device for an integrated brake system and a vehicle, wherein the device comprises: the brake system comprises a power supply, a power electric appliance in the integrated brake system, a power electric appliance driving circuit, a logic control module and a constant-current pre-charging module; the power electric appliance is connected with the power supply through the power electric appliance driving circuit, and a filter capacitor is arranged on the power electric appliance driving circuit; the power electric appliance driving circuit leads out a pre-charging loop connected with the power supply between the power supply and the filter capacitor, and the constant-current pre-charging module is arranged on the pre-charging loop; the constant-current pre-charging module is connected with the logic control module and used for responding to a pre-charging command sent by the logic control module to control the filter capacitor to be charged with constant current. The constant-current pre-charging module is arranged, so that the problem of current impact generated during capacitor charging is solved, the stability and reliability of the charging circuit are improved, and the service life of a power electrical appliance is prolonged.)

1. A charge protection device for an integrated brake system, comprising: the brake system comprises a power supply (1), a power electrical appliance (21) in the integrated brake system, a power electrical appliance driving circuit (22), a logic control module (26) and a constant current pre-charging module (24);

the power electrical appliance is connected with the power supply (1) through the power electrical appliance driving circuit (22), and a filter capacitor (20) is arranged on the power electrical appliance driving circuit (22);

the power electric appliance driving circuit (22) is characterized in that a pre-charging loop (34) connected with the power supply (1) is led out between the power supply (1) and the filter capacitor (20), and the constant-current pre-charging module (24) is arranged on the pre-charging loop (34);

the constant-current pre-charging module (24) is connected with the logic control module (26) and is used for responding to a pre-charging command sent by the logic control module (26) to control the filter capacitor (20) to be charged with constant current.

2. The charge protection device for the integrated brake system according to claim 1, wherein the constant-current pre-charging module (24) comprises a first field effect transistor (2), a first limit diode (6), a second limit diode (7), a first resistor (9), a second resistor (10) and a first semiconductor triode (29); the resistance value of the first resistor (9) is greater than a preset resistance threshold value; the first field effect transistor (2) is connected with the power supply (1) through a power supply circuit (47);

the base electrode of the first semiconductor triode (29) is connected with the first field effect transistor (2) through a first circuit (36), and the first limiting diode (6) and the second limiting diode (7) are arranged on the first circuit (36) in series; the base electrode of the first semiconductor triode (29) is grounded through a second circuit (37), and the first resistor (9) is arranged on the second circuit (37);

the emitter of the first semiconductor triode (29) is connected with the first field effect transistor (2) through a third circuit (38), the third circuit (38) is connected with the first circuit (36) in parallel, and the second resistor (10) is arranged on the third circuit (38); the collector of the first semiconductor triode (29) is connected with the filter capacitor (20) through a fourth circuit (39).

3. A charge protection device for an integrated braking system according to claim 1, characterized by further comprising a logic supply circuit (23) and a power down protection module (25);

the logic control module (26) is connected with the power supply (1) through the logic power supply circuit (23), a power-down protection loop (35) communicated with the filter capacitor (20) is led out between the power supply (1) and the logic control module (26) through the logic power supply circuit (23), the power-down protection module (25) is arranged on the power-down protection loop (35), the power-down protection module (25) is used for responding to an abnormal power-down instruction sent by the logic control module (26), communicating the filter capacitor (20) with the logic control module (26), and transmitting the electric quantity of the filter capacitor (20) to the logic power supply circuit (23), so that the logic control module (26) executes the writing operation of abnormal processing and the read-only memory (27).

4. A charge protection device for an integrated brake system according to claim 3, characterized in that the power-down protection module (25) comprises a second semiconductor transistor (30), a third semiconductor transistor (31), a fourth semiconductor transistor (32), a third resistor (11), a fourth resistor (12), a fifth resistor (13), a sixth resistor (14) and a seventh resistor (15);

the base electrode of the second semiconductor triode (30) is connected with the power supply circuit (47) through a fifth circuit (40), and the third resistor (11) is arranged on the fifth circuit (40); the emitter electrode of the second semiconductor triode (30) is connected with the filter capacitor (20); the collector of the second semiconductor triode (30) is grounded through a sixth circuit (41), the fifth resistor (13) and the sixth resistor (14) are arranged on the sixth circuit (41), and the fifth circuit (40) is connected with the sixth circuit (41) in series; the fourth resistor (12) is arranged on a seventh circuit (42), and the seventh circuit (42) is connected with the fifth circuit (40) and the sixth circuit (41) in parallel;

the collector of the second semiconductor triode (30) is also connected with the base of the fourth semiconductor triode (32) through an eighth circuit (43); the emitter of the fourth semiconductor triode (32) is grounded; the collector of the fourth semiconductor triode (32) is connected with the filter capacitor (20) through a ninth circuit (44), the seventh resistor (15) is arranged on the ninth circuit (44), and the collector of the fourth semiconductor triode (32) is also connected with the base of the third semiconductor triode (31);

the emitter of the third semiconductor triode (31) is connected with the filter capacitor (20) through a tenth circuit (45), and the tenth circuit (45) is connected with the ninth circuit (44) in parallel; and the collector of the third semiconductor triode (31) is connected with the logic control module (26) through the power-down protection loop (35).

5. A charge protection device for an integrated braking system according to claim 3, characterized in that a third limiting diode (8) is provided on said power down protection circuit (35);

the positive electrode of the third limiting diode (8) is connected with the power failure protection module (25), the negative electrode of the third limiting diode (8) is connected with the logic power supply circuit (23), and the third limiting diode (8) is used for preventing current in the logic power supply circuit (23) from reversely flowing.

6. The charging protection device for the integrated brake system according to claim 1, characterized in that a first fuse (16), a second field effect transistor (3), a third field effect transistor (4), a filter inductor (18) are further arranged on the power electric appliance driving circuit (22);

the power supply (1) is sequentially connected with the first fuse (16), the second field effect transistor (3), the third field effect transistor (4) and the filter inductor (18) in series, and the filter inductor (18) is connected with the filter capacitor (20) in series.

7. A charge protection device for an integrated brake system according to claim 3, characterized in that a second fuse (17), a fourth field effect transistor (5) and a decoupling capacitor (19) are further provided on the logic supply circuit (23);

the power supply (1) is sequentially and respectively connected with the second fuse (17), the fourth field effect transistor (5) and the decoupling capacitor (19) in series, and the decoupling capacitor (19) is used for stabilizing a voltage value in the logic power supply circuit (23).

8. A charge protection device for an integrated brake system according to claim 1, characterized in that it further comprises a wake-up source (28), said wake-up source (28) being connected to said logic control module (26), said wake-up source (28) being configured to activate said logic control module (26) in a sleep state.

9. A charge protection device for an integrated brake system according to claim 1, characterized in that said logic control module (26) comprises a voltage acquisition module connected to said filter capacitor (20) through an eleventh circuit (46) for acquiring the voltage value on said filter capacitor (20).

10. A vehicle for carrying out to implement a charge protection arrangement for an integrated brake system according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of automobile electronic control, in particular to a charging protection device for an integrated brake system and a vehicle.

Background

The Integrated Brake System (IBS) comprises a mechanical hydraulic component, an algorithm control unit and an electronic control unit, integrates functional modules such as motor drive and vehicle stability control, and can meet the braking requirement of the whole vehicle above the L3 level, wherein the electronic control unit is a link establishing the connection between the algorithm control and the mechanical hydraulic component and is provided with key module circuits such as power supply management, motor drive, valve drive and signal processing.

The integrated brake system is complex in function, hydraulic pressure (less than 200ms) required by a wheel cylinder needs to be quickly established during braking, the establishment of the hydraulic pressure is completed by using a permanent magnet synchronous motor to provide assistance, and a high-power permanent magnet synchronous motor needs to be adopted to achieve the purpose of quick response. When the high-power permanent magnet synchronous motor is driven, serious voltage fluctuation interference can be caused to a direct current power supply bus. The driving power supply loop of the permanent magnet synchronous motor is generally called as a power supply circuit, a power supply is required to be filtered and stabilized, the capacitance value of a filter capacitor of the power supply circuit is very large, the capacitance charge capacity of the capacitor is 0 under the initial condition, when the power supply is connected, due to the charging characteristic of the capacitor, the capacitor is equivalent to an instant short circuit at the moment of power supply connection, the current impact is very large, and the service life of the capacitor and a preceding stage power device can be shortened or the power device can be damaged after frequent use.

In order to solve the problem of current impact in the charging process of a large capacitor when a power supply is connected, a switching tube and a relay are added in the traditional scheme, the pre-charging of the charge of the large capacitor is realized, and the current impact is reduced or eliminated, but the problems that the charging current is not adjustable, the cost of the relay is high, the occupied space is large and the like exist.

In view of the above-mentioned shortcomings of the prior art, there is a need for a charging protection device and a vehicle for an integrated brake system, which solves the above-mentioned problems.

Disclosure of Invention

In order to solve the problems in the prior art, the embodiment of the invention provides a charging protection device for an integrated brake system and a vehicle, and the technical scheme is as follows:

on one hand, the charging protection device for the integrated brake system is provided, and comprises a power supply, a power electric appliance in the integrated brake system, a power electric appliance driving circuit, a logic control module and a constant current pre-charging module;

the power electric appliance is connected with the power supply through the power electric appliance driving circuit, and a filter capacitor is arranged on the power electric appliance driving circuit;

the power electric appliance driving circuit leads out a pre-charging loop connected with the power supply between the power supply and the filter capacitor, and the constant-current pre-charging module is arranged on the pre-charging loop;

the constant-current pre-charging module is connected with the logic control module and used for responding to a pre-charging command sent by the logic control module to control the filter capacitor to be charged with constant current.

Further, the constant-current pre-charging module comprises a first field effect transistor, a first limit diode, a second limit diode, a first resistor, a second resistor and a first semiconductor triode; the resistance value of the first resistor is greater than a preset resistance threshold value; the first field effect transistor is connected with the power supply through a power supply circuit;

the base electrode of the first semiconductor triode is connected with the first field effect transistor through a first circuit, and the first limiting diode and the second limiting diode are arranged on the first circuit in series; the base electrode of the first semiconductor triode is grounded through a second circuit, and the first resistor is arranged on the second circuit;

an emitter of the first semiconductor triode is connected with the first field effect transistor through a third circuit, the third circuit is connected with the first circuit in parallel, and the second resistor is arranged on the third circuit; and the collector electrode of the first semiconductor triode is connected with the filter capacitor through a fourth circuit.

Furthermore, the power supply device also comprises a logic power supply circuit and a power failure protection module;

the logic control module is connected with the power supply through the logic power supply circuit, a power-down protection circuit communicated with the filter capacitor is led out between the power supply and the logic control module through the logic power supply circuit, the power-down protection module is arranged on the power-down protection circuit, and the power-down protection module is used for responding to an abnormal power-down instruction sent by the logic control module, communicating the filter capacitor with the logic control module, and transmitting the electric quantity of the filter capacitor to the logic power supply circuit, so that the logic control module executes abnormal processing and the writing operation of the read-only memory.

Further, the power-down protection module comprises a second semiconductor triode, a third semiconductor triode, a fourth semiconductor triode, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor and a seventh resistor;

the base electrode of the second semiconductor triode is connected with the power supply circuit through a fifth circuit, and the third resistor is arranged on the fifth circuit; the emitter of the second semiconductor triode is connected with the filter capacitor; a collector of the second semiconductor triode is grounded through a sixth circuit, the fifth resistor and the sixth resistor are arranged on the sixth circuit, and the fifth circuit is connected with the sixth circuit in series; the fourth resistor is arranged on a seventh circuit, and the seventh circuit is connected with the fifth circuit and the sixth circuit in parallel;

the collector electrode of the second semiconductor triode is also connected with the base electrode of the fourth semiconductor triode through an eighth circuit; an emitting electrode of the fourth semiconductor triode is grounded; a collector of the fourth semiconductor triode is connected with the filter capacitor through a ninth circuit, the seventh resistor is arranged on the ninth circuit, and the collector of the fourth semiconductor triode is also connected with a base of the third semiconductor triode;

an emitter of the third semiconductor triode is connected with the filter capacitor through a tenth circuit, and the tenth circuit is connected with the ninth circuit in parallel; and the collector electrode of the third semiconductor triode is connected with the logic control module through the power-down protection circuit.

Furthermore, a third limiting diode is arranged on the power failure protection circuit;

the anode of the third limiting diode is connected with the power-down protection module, the cathode of the third limiting diode is connected with the logic power supply circuit, and the third limiting diode is used for preventing current in the logic power supply circuit from flowing in the reverse direction.

Furthermore, a first fuse, a second field effect transistor, a third field effect transistor and a filter inductor are also arranged on the power electric appliance driving circuit;

the power supply is sequentially connected with the first fuse, the second field effect transistor, the third field effect transistor and the filter inductor in series respectively, and the filter inductor is connected with the filter capacitor in series.

Furthermore, a second fuse, a fourth field effect transistor and a decoupling capacitor are also arranged on the logic power supply circuit;

the power supply is sequentially and respectively connected with the second fuse, the fourth field effect transistor and the decoupling capacitor in series, and the decoupling capacitor is used for stabilizing the voltage value in the logic power supply circuit.

Furthermore, the system also comprises a wake-up source, wherein the wake-up source is connected with the logic control module and is used for activating the logic control module in a dormant state.

Furthermore, the logic control module comprises a voltage acquisition module, the voltage acquisition module is connected with the filter capacitor through an eleventh circuit, and the voltage acquisition module is used for acquiring a voltage value on the filter capacitor.

In another aspect, a vehicle for implementing the above-described charge protection device for an integrated brake system is provided.

The embodiment of the invention has the following beneficial effects:

the constant-current pre-charging module is arranged, so that the filter capacitor is charged by constant current, the problem of current impact generated when the filter capacitor is charged is solved, the service life of a power electric appliance is prolonged, the stability of the charging protection device is improved, meanwhile, the constant-current pre-charging module is realized in a circuit connection control mode, and the constant-current pre-charging module has the advantages of simple structure and low cost. The charging protection device is also provided with a power-down protection module, when the charging system is abnormally powered down, the power-down protection module transmits the electric quantity of the filter capacitor to the logic power supply circuit by communicating the filter capacitor with the logic control module, so that the logic control module is ensured to have enough power-down protection time to execute abnormal processing and write-in operation of the read-only memory, the production cost is reduced, and the reliability of the charging protection device is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a block diagram of a charging protection device for an integrated brake system according to an embodiment of the present invention;

fig. 2 is a block diagram of another charging protection device for an integrated brake system according to an embodiment of the present invention;

wherein the reference numerals in the figures correspond to:

1-a power supply; 2-a first field effect transistor; 3-a second field effect transistor; 4-a third field effect transistor; 5-a fourth field effect transistor; 6-a first limiting diode; 7-a second limiting diode; 8-a third limiting diode; 9-a first resistance; 10-a second resistance; 11-a third resistance; 12-a fourth resistance; 13-fifth resistance; 14-a sixth resistance; 15-seventh resistance; 16-a first fuse; 17-a second fuse; 18-a filter inductance; 19-a decoupling capacitor; 20-a filter capacitor; 21-power electrical appliances; 22-power electrical drive circuit; 23-logic power supply circuit; 24-constant current pre-charging module; 25-power down protection module; 26-a logic control module; 27-read only memory; 28-a wake-up source; 29-a first semiconductor transistor; 30-a second semiconductor triode; 31-a third semiconductor triode; 32-a fourth semiconductor transistor; 33-a voltage acquisition module; 34-a pre-charge circuit; 35-power down protection loop; 36-a first circuit; 37-a second circuit; 38-a third circuit; 39-a fourth circuit; 40-a fifth circuit; 41-sixth circuit; 42-a seventh circuit; 43-an eighth circuit; 44-a ninth circuit; 45-tenth circuitry; 46-an eleventh circuit; 47-Power supply circuit.

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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example (b):

referring to fig. 1 and fig. 2, in which fig. 1 is a block diagram of a charging protection device for an integrated brake system according to an embodiment of the present invention, fig. 2 is a block diagram of another charging protection device for an integrated brake system according to an embodiment of the present invention, and the following describes a technical solution of the present invention in detail with reference to fig. 1 and fig. 2.

In an embodiment of the present invention, a charge protection device for an integrated brake system includes: the brake system comprises a power supply (1), a power electrical appliance (21) in the integrated brake system, a power electrical appliance driving circuit (22), a logic control module (26) and a constant current pre-charging module (24).

The power electric appliance (21) is connected with the power supply (1) through the power electric appliance driving circuit (22), the power electric appliance driving circuit (22) is further provided with a filter capacitor (20), the filter capacitor (20) is arranged to improve the power supply stability of the power supply (1) and the circuit reliability, in the embodiment of the invention, the filter capacitors (20) are arranged in 6 filter capacitors (20) which are connected in parallel, the number of the filter capacitors (20) can be set according to the actual situation, and no specific limitation is made herein.

The power electrical appliance driving circuit (22) extends a pre-charging loop (34) connected with a power supply (1) between the power supply (1) and a filter capacitor (20), a constant current pre-charging module (24) is arranged on the pre-charging loop (34), the constant current pre-charging module (24) is connected with a logic control module (26) and used for keeping constant current when the filter capacitor (20) is charged and avoiding larger current impact when the filter capacitor (20) is charged, concretely, when the logic control module (26) receives a wake-up signal sent by an external wake-up source (28), the logic control module (26) transmits a pre-charging instruction according to the wake-up signal, and after the constant current pre-charging module (24) receives the pre-charging instruction, the constant current pre-charging module (24) is used for controlling the filter capacitor (20) to be charged with constant current.

In the embodiment of the invention, the constant-current pre-charging module (24) is arranged, so that the filter capacitor (20) is charged by constant current, the problem of current impact generated when the filter capacitor (20) is charged is solved, the service life of a power electrical appliance (21) is prolonged, the stability of the charging protection device is improved, and meanwhile, the constant-current pre-charging module (24) is realized by adopting a circuit connection control mode, so that the constant-current pre-charging protection device has the advantages of simple structure and low cost.

In an alternative embodiment, with continued reference to fig. 1, the constant current pre-charge module (24) includes a first field effect transistor (2), a first limit diode (6), a second limit diode (7), a first resistor (9), a second resistor (10), and a first semiconductor transistor (29), wherein the first field effect transistor (2) is connected to the power supply (1) through the power supply circuit.

The base electrode of the first semiconductor triode (29) is connected with the first field effect transistor (2) through a first circuit (36), a first limiting diode (6) and a second limiting diode (7) are arranged on the first circuit (36) and connected in series, the base electrode of the first semiconductor triode (29) is grounded through a second circuit (37), and a first resistor (9) is arranged on the second circuit (37). The emitter of the first semiconductor triode (29) is connected with the first field effect transistor (2) through a third circuit (38), the third circuit (38) is connected with the first circuit (36) in parallel, the second resistor (10) is arranged on the third circuit (38), and the collector of the first semiconductor triode (29) is connected with the filter capacitor (20) through a fourth circuit (39).

In the embodiment of the invention, the first field effect transistor (2), the first limit diode (6), the second limit diode (7), the first resistor (9), the second resistor (10) and the first semiconductor triode (29) are connected through the circuit, and the constant-current pre-charging module (24) can control the filter capacitor (20) to be charged with constant current, so that the problem that the service life of the power electrical appliance (21) is reduced due to overlarge charging current impact is avoided when the filter capacitor (20) is charged, and the stability of the circuit is improved.

In an optional embodiment, a first fuse (16), a second field effect transistor (3), a third field effect transistor (4) and a filter inductor (18) are further arranged on the power appliance driving circuit (22).

The power supply (1) is sequentially connected with the first fuse (16), the second field effect transistor (3), the third field effect transistor (4) and the filter inductor (18) in series, the filter inductor (18) is connected with the filter capacitor (20) in series, it needs to be noted that the second field effect transistor (3) is mainly used for controlling the on-off of the power supply (1) to play a role of safety protection, and the third field effect transistor (4) is used for preventing the reverse flow of current, so that the current when the filter capacitor (20) supplies power reversely flows to the power appliance driving circuit (22).

In an optional embodiment, the charging protection module further includes a wake-up source (28), and the wake-up source (28) is connected to the logic control module (26), and when the wake-up source (28) receives an external charging signal, the wake-up signal may be sent to the logic control module (26) in a sleep state, so that the logic control module (26) starts to activate the constant current pre-charging module (24) to operate, so that the constant current pre-charging module (24) may control to charge the filter capacitor (20) with a constant current.

Specifically, when the wake-up source (28) receives an external charging signal, the wake-up signal is sent to the logic control module (26), and after the logic control module (26) receives the wake-up signal, the third field effect transistor (4) is controlled to be in a conducting state, so that the power supply (1) starts to charge the filter capacitor (20), and at the moment, the logic control module (26) simultaneously controls the first field effect transistor (2) to be in the conducting state, and starts to start the constant current pre-charging module (24) to work.

The pre-charging current flow direction when the constant current pre-charging module (24) works is that the power supply (1) supplies power to the first field effect transistor (2) through the power supply circuit (47), the pre-charging current flow direction sequentially passes through the second resistor (10) and the first semiconductor triode (29), and finally flows to the filter capacitor (20), the sum of the whole conducting voltage is 1.4V under the conducting state of the constant current pre-charging module (24), wherein the voltage value of two ends of the first semiconductor triode (29) is about 0.7V, so the voltage value of two ends of the second resistor (10) is about 0.7V, when the resistance value of the second resistor (10) is adjusted, the current flowing through the first semiconductor triode (29) can be correspondingly changed, therefore, the current value of the first semiconductor triode (29) can be accurately controlled by adjusting the resistance value of the second resistor (10), and meanwhile, the logic control module (26) can calculate the required charging time according to the preset charging current and the voltage of the power supply (1) And then the configuration of the constant current pre-charging module (24) is selected, so that the constant current pre-charging module (24) has the characteristic of flexible movement, and the stability of the charging circuit is improved to a certain extent.

Specifically, in the constant current pre-charging module (24), the resistance value of the first resistor (9) needs to be greater than a preset resistance threshold value, because when the first resistor (9) is large enough, the current of the base of the first semiconductor triode (29) can be ignored, and therefore the current of the constant current pre-charging module (24) for charging the filter capacitor (20) is approximately equal to the current of the collector of the first semiconductor triode (29). When the resistance value of the second resistor (10) is determined, the current on the collector of the first semiconductor triode (29) is determined, namely the current value on the collector of the first semiconductor triode (29) can default to be a constant value, and therefore the constant current pre-charging module (24) can control the filter capacitor (20) to be charged with the constant current.

In an optional embodiment, the logic control module (26) includes a voltage acquisition module (33), the voltage acquisition module (33) is connected to the filter capacitor (20) through an eleventh circuit (46), wherein the voltage acquisition module (33) is configured to acquire a voltage value on the filter capacitor (20), specifically, the logic control module (26) monitors a charging state of the power appliance driving circuit (22) by acquiring the voltage value on the filter capacitor (20) through the voltage acquisition module (33), when the voltage value on the filter capacitor (20) acquired by the voltage acquisition module (33) reaches a threshold value, the voltage acquisition module (33) sends an acquired signal to the logic control module (26), and the logic control module (26) controls the second field effect transistor (3) and the third field effect transistor (4) on the power appliance driving circuit (22) to be in an open state according to the signal acquired by the voltage acquisition module (33), at the moment, the power electric appliance driving circuit (22) works normally.

In an alternative embodiment, the charging protection device for an integrated brake system further comprises a logic power supply circuit (23) and a power down protection module (25).

Wherein the logic control module (26) is connected with the power supply (1) through the logic power supply circuit (23), the logic power supply circuit (23) leads out a power-down protection loop (35) which is communicated with the filter capacitor (20) between the power supply (1) and the logic control module (26), the power-down protection module (25) is arranged on the power-down protection loop (35), concretely, the power supply (1) supplies power to the logic control module (26) through the logic power supply circuit (23), when the logic control module (26) detects that a power supply (1) part on the logic power supply circuit (23) is in fault, the logic control module (26) sends an abnormal power-down instruction to the power-down protection module (25), the power-down protection module (25) responds to the abnormal power-down instruction sent by the logic control module (26), the filter capacitor (20) is communicated with the logic control module (26), and the electric quantity of the filter capacitor (20) is transferred to the logic power supply circuit (23), so that the logic control module (26) performs exception handling and read only memory (27) write operations.

In the embodiment of the invention, by arranging the power-down protection module (25), when the power supply system has abnormal power failure, the power-down protection module (25) can communicate the filter capacitor (20) with the logic control module (26), so that the electric quantity of the filter capacitor (20) is transmitted to the logic power supply circuit (23), and the arrangement of the power-down protection module (25) ensures that the logic control module (26) has enough power-down protection time to execute abnormal processing and write-in operation of the read-only memory (27), thereby reducing the production cost and improving the reliability of the charging protection device.

In an alternative embodiment, the power down protection module (25) includes a second semiconductor transistor (30), a third semiconductor transistor (31), a fourth semiconductor transistor (32), a third resistor (11), a fourth resistor (12), a fifth resistor (13), a sixth resistor (14), and a seventh resistor (14).

The base electrode of the second semiconductor triode (30) is connected with the power supply circuit (47) through a fifth circuit (40), a third resistor (11) is arranged on the fifth circuit (40), the emitter electrode of the second semiconductor triode (30) is connected with the filter capacitor (20), the collector electrode of the second semiconductor triode (30) is grounded through a sixth circuit (41), a fifth resistor (13) and a sixth resistor (14) are arranged on the sixth circuit (41), the fifth circuit (40) is connected with the sixth circuit (41) in series, the fourth resistor (12) is arranged on a seventh circuit (42), and the seventh circuit (42) is connected with the fifth circuit (40) and the sixth circuit (41) in parallel.

The collector electrode of the second semiconductor triode (30) is also connected with the base electrode of the fourth semiconductor triode (32) through an eighth circuit (43), the emitter electrode of the fourth semiconductor triode (32) is grounded, the collector electrode of the fourth semiconductor triode (32) is connected with the filter capacitor (20) through a ninth circuit (44), a seventh resistor (14) is arranged on the ninth circuit (44), the collector electrode of the fourth semiconductor triode (32) is also connected with the base electrode of the third semiconductor triode (31), the emitter electrode of the third semiconductor triode (31) is connected with the filter capacitor (20) through a tenth circuit (45), the tenth circuit (45) is connected with the ninth circuit (44) in parallel, and the collector electrode of the third semiconductor triode (31) is connected with the logic control module (26) through a power-down protection circuit (35).

In an alternative embodiment, a third limiting diode (8) is arranged on the power down protection circuit (35), wherein the anode of the third limiting diode (8) is connected with the power down protection module (25), the cathode of the third limiting diode (8) is connected with the logic power supply circuit (23), and the third limiting diode (8) is arranged to prevent the current in the logic power supply circuit (23) from flowing in the reverse direction.

In an alternative embodiment, a second fuse (17), a fourth field effect transistor (5) and a decoupling capacitor (19) are further arranged on the logic power supply circuit (23), and the power supply (1) is sequentially connected in series with the second fuse (17), the fourth field effect transistor (5) and the decoupling capacitor (19), respectively, wherein the decoupling capacitor (19) is arranged for stabilizing the voltage value in the logic power supply circuit (23).

When the power supply (1) charges the filter capacitor (20) with a constant current and the charging voltage of the filter capacitor (20) is in a stable state, the base of the second semiconductor triode (30) in the power-down protection module (25) is connected with the logic power supply circuit (23), at this time, the voltage value of the base of the second semiconductor triode (30) is high level, the second semiconductor triode (30) is in a disconnected state, and therefore, the power-down protection module (25) does not work.

In the embodiment of the invention, when the logic control module (26) detects that a power supply (1) component on the logic power supply circuit (23) has a fault, the logic control module (26) sends an abnormal power-down instruction to the power-down protection module (25), because the power supply (1) component is in a non-power supply condition, the voltage value of the base of the second semiconductor triode (30) is pulled down, namely, the voltage value is low level, at the moment, the second semiconductor triode (30) is conducted, so that the filter capacitor (20) and the second semiconductor triode (30) are in a connected state, because the second semiconductor triode (30) is in a connected state, the third semiconductor triode (31) and the fourth semiconductor triode (32) are also conducted, so that the filter capacitor (20) and the logic control module (26) are in a connected state, at the moment, the power-down protection module (25) transfers the electric quantity of the filter capacitor (20) to the logic power supply circuit (23), so that the logic control module (26) performs exception handling and read only memory (27) write operations.

According to the technical scheme of the embodiment of the invention, the constant-current pre-charging module is arranged, so that the filter capacitor is charged by constant current, the problem of current impact generated when the filter capacitor is charged is solved, the service life of a power electrical appliance is prolonged, the stability of the charging protection device is improved, and meanwhile, the constant-current pre-charging module is realized in a circuit connection control mode and has the advantages of simple structure and low cost. The charging protection device is also provided with a power-down protection module, when the charging system is abnormally powered down, the power-down protection module transmits the electric quantity of the filter capacitor to the logic power supply circuit by communicating the filter capacitor with the logic control module, so that the logic control module is ensured to have enough power-down protection time to execute abnormal processing and write-in operation of the read-only memory, the production cost is reduced, and the reliability of the charging protection device is improved.

The embodiment of the present invention further provides a vehicle, where the vehicle is configured to carry and execute the charging protection device for an integrated brake system, so that the vehicle in the embodiment of the present invention should have the technical effect of the charging protection device for an integrated brake system, and details are not repeated herein.

Although the present invention has been described by way of preferred embodiments, the present invention is not limited to the embodiments described herein, and various changes and modifications may be made without departing from the scope of the present invention.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.