A manually switchable dual-circuit permanent magnet switch drive module

Abstract

The present invention provides a manually switchable dual-circuit permanent magnet switch drive module, which belongs to the field of switch device drive in the electric power industry. The present invention includes a main drive circuit and a backup drive circuit with the same structure, and also includes a switching module capable of manually switching the main drive circuit or the backup drive circuit to work, and an interface module for external devices and power supply. The main drive circuit includes a main control module, a bridge circuit, a bridge circuit drive module, a power management module and an energy storage module, wherein the main control module is respectively connected to the bridge circuit drive module and the power management module, the output end of the bridge circuit drive module is connected to the input end of the bridge circuit, and also includes a backup battery connected to the power management modules of the main drive circuit and the backup drive circuit respectively, the input end of the energy storage module is connected to the output end of the power management module, and the output end of the energy storage module is connected to the input end of the bridge circuit. The present invention adopts a main and backup dual circuit design, and has high reliability.

Description

Technical Field

[0001] The invention relates to a switch device drive in the electric power industry, and in particular to a manually switchable double-circuit permanent magnet switch drive module. Background Art

[0002] When the existing permanent magnet switch (hereinafter referred to as the "switch mechanism") is actually used, it needs to be driven by a permanent magnet switch drive module (hereinafter referred to as the "drive module"). The principle of the drive module driving the switch mechanism is to generate a momentary large current to the internal coil of the switch mechanism, excite the coil, change the polarity of the internal permanent magnet, and thus drive the switch mechanism to complete the action.

[0003] Most permanent magnet switch drive modules in the current power industry use a split design solution, with the drive circuit + drive capacitor designed and installed separately. The drive circuit usually has only one set without backup, self-test and short-circuit detection functions. The drive circuit cannot be used again after being damaged, and the reliability is low.

[0004] In summary, the above model has the following disadvantages:

[0005] 1. The overall module is installed in a split manner, which is large in size, complicated in installation process, and has the risk of high voltage electric shock when installing capacitors;

[0006] 2. The drive circuit is prone to burn out the internal circuit during operation due to poor tolerance to high current;

[0007] 3. When the coil is short-circuited, it cannot be automatically detected and the drive circuit will be burned during driving;

[0008] 4. The drive circuit cannot be self-checked and discovered in time after being damaged;

[0009] 5. The drive circuit has no backup circuit. Summary of the invention

[0010] In order to solve the problems in the prior art, the present invention provides a manually switchable dual-circuit permanent magnet switch drive module.

[0011] The present invention includes a main drive circuit and a backup drive circuit with the same structure, and also includes a switching module capable of manually switching the operation of the main drive circuit or the backup drive circuit, and an interface module for external devices and power supply. The main drive circuit includes a main control module, a bridge circuit, a bridge circuit drive module, a power management module and an energy storage module, wherein the main control module is respectively connected to the bridge circuit drive module and the power management module, the output end of the bridge circuit drive module is connected to the input end of the bridge circuit, and also includes a backup battery respectively connected to the power management modules of the main drive circuit and the backup drive circuit, the input end of the energy storage module is connected to the output end of the power management module, and the output end of the energy storage module is connected to the input end of the bridge circuit.

[0012] The present invention is further improved to further include a self-test module connected to the bridge circuit, and a self-test drive branch for driving the self-test module is provided in the bridge circuit drive module.

[0013] The present invention is further improved in that the bridge circuit adopts an H-bridge circuit.

[0014] The present invention is further improved, the bridge circuit includes bidirectional thyristors T1, T2, T3, T4, transistors Q2, Q3, optical couplers OP10, OP11, OP12, OP13, and interface J3, wherein:

[0015] The control ends of the bidirectional thyristors T1, T2, T3, and T4 and the base of the transistor Q2 are connected to the bridge circuit drive output end respectively, a diode is connected in parallel between the 1 and 2 pins of the bidirectional thyristors T1, T2, T3, and T4 respectively, and the positive pin 2 of the diode is connected to the 1 pin of the bidirectional thyristor connected to the negative pole of the power supply respectively, one end of the bidirectional thyristors T1 and T2 connected in series is connected to the power supply VH+, and the other end is connected to the collector of the transistor Q2, one end of the bidirectional thyristors T3 and T4 connected in series is connected to the power supply VF+, and the other end is connected to the collector of the transistor Q2, one end XQ+ of the load is connected between the bidirectional thyristors T1 and T2, and the other end XQ- of the load is connected between the bidirectional thyristors T3 and T4, and the load is connected in parallel with a voltage stabilizing diode D18,

[0016] Each bidirectional thyristor is connected in parallel with an optocoupler branch with the same structure, wherein the primary pin 1 of the optocoupler OP10 in the optocoupler branch of the bidirectional thyristor T1 is respectively connected to one end of the resistor R24 ​​of the resistor R23, one end of the resistor R23 is connected to the power supply VH+, the primary pin 2 of the optocoupler OP10 is respectively connected to the other end of the resistor R24 ​​and XQ+, the secondary pin 3 of the optocoupler OP10 is grounded, and the pin 4 is connected to the T1 KI pin 19 of the interface J3,

[0017] The base of the transistor Q2 is also connected to the K end of the voltage regulator tube D25, one end of the resistor R43 and the collector of the transistor Q3 respectively. The emitter of the transistor Q2 is connected to the A end of the voltage regulator tube D25, the other end of the resistor R23, the emitter of the transistor Q3, the resistor R46, one end of the capacitor C1, the resistor R100, the resistor R85, the resistor R93 and one end of the resistor R1 respectively. The base of the transistor Q3 and the other end of the resistor R46 and the capacitor C1 are connected to the OCP DRV1 pin 10 of the interface J3. The other ends of the resistor R85, the resistor R93 and the resistor R1 are connected to the power supply DC V-, the other end of the resistor R100 is connected to the in-phase input end of the power amplifier U8, the inverting input end of the power amplifier U8 is respectively connected to one end of the resistor R103 and one end of the resistor R104, the other end of the resistor R103 and the negative power pin of the power amplifier U8 are grounded, the other end of the resistor R104 and the positive power pin of the power amplifier U8 are connected to a 5V power supply, the output end of the power amplifier U8 is respectively connected to one end of the resistor R37 and the positive electrode of the diode D1, and the other end of the resistor R37 is connected to the OCP pin 7 of the interface J3.

[0018] The present invention is further improved, the self-test module includes a transistor Q4 and an optocoupler OP14, the base of the transistor Q4 is respectively connected to the output end of the self-test drive branch, one end of the resistor R47, and the K end of the voltage-stabilizing diode D26, the collector of the transistor Q4 is connected to the collector of the transistor Q2, the emitter of the transistor Q4, the other end of the resistor R47, and the A end of the voltage-stabilizing diode D26 are respectively connected to one end of the resistor R48, the other end of the resistor R48 is connected to the primary pin 1 of the optocoupler OP14 through the resistor R49, the primary pin 2 of the optocoupler OP14 is connected to the emitter of the transistor Q2, the resistor R50 and the resistor R51 are connected in parallel between the primary pin 1 and the pin 2 of the optocoupler OP14, the secondary pin 3 of the optocoupler OP14 is grounded, and the pin 4 is connected to the IGBT1KI pin 11 of the interface J3.

[0019] The present invention is further improved, and the driving module includes a driving chip U5 and 6 driving units with the same structure respectively connected to different pins of the driving chip U5, one of which is a self-test driving branch, which is used to drive bidirectional thyristors T1, T2, T3, T4, transistors Q2 and transistors Q4 respectively.

[0020] The present invention is further improved, the first driving unit includes an optical coupler OP15, wherein the primary pin 1 of the optical coupler OP15 is connected to a 5V power supply through a resistor R8, the pin 2 is connected to the HZ SCR DRV1 pin 16 of the driving chip U5, the secondary pin 3 is connected to the bidirectional thyristor T1 control electrode, and the pin 4 is connected to the power supply DC V+ through a resistor R52.

[0021] The main control module includes a four-way input unit, a two-way output unit, one or more serial port units, an indication unit, a reset module and an emulator interface respectively connected to the main control chip U6.

[0022] Furthermore, the indicating unit includes 5 LED indicator lights, which are respectively used to indicate the operating status of each module.

[0023] The present invention is further improved in that the dual-circuit permanent magnet switch drive module adopts an integrated design, wherein the bridge circuit is set as an independent module.

[0024] The present invention is further improved in that the energy storage module is arranged in an array and is composed of a plurality of capacitors, and the capacity of the energy storage module is configured by selecting a connection arrangement between the capacitors.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the overall module is integrated in design, which solves the problem of split installation, large size, complex installation process and high-voltage electric shock risk when installing capacitors; the module has an anti-short circuit function, which solves the problem that the coil cannot be automatically detected when it is short-circuited, and the drive circuit is burned during driving; the module has an automatic detection function, which solves the problem that the drive circuit cannot be self-checked in time after damage; the drive circuit has a main and backup dual circuit, which solves the problem of no backup circuit and low reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 The circuit schematic diagram of the main control module and energy storage module;

[0028] Figure 3 This is the circuit schematic diagram of the power management module;

[0029] Figure 4 This is the schematic diagram of the bridge loop drive module circuit;

[0030] Figure 5 This is the schematic diagram of the bridge circuit and self-test module circuit. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1As shown, the whole machine of the present invention includes a main drive circuit 1 and a backup drive circuit 2 with the same structure, and also includes a switching module 3 that can manually switch the operation of the main drive circuit or the backup drive circuit, and an interface module 4 for external devices and power supply. The whole drive board of the present invention is integrated, and the main drive circuit 1 and the backup drive circuit 2 are symmetrically arranged on the drive board, including a main control module, a bridge circuit, a bridge circuit drive module, a power management module and an energy storage module, wherein the main control module is respectively connected to the bridge circuit drive module and the power management module, and the output end of the bridge circuit drive module is connected to the input end of the bridge circuit, and also includes a backup battery connected to the power management modules of the main drive circuit and the backup drive circuit respectively, the input end of the energy storage module is connected to the output end of the power management module, and the output end of the energy storage module is connected to the input end of the bridge circuit.

[0033] The main control board of this example is further provided with a self-test module connected to the bridge circuit, and the bridge circuit driving module is provided with a self-test driving branch for driving the self-test module.

[0034] The main drive circuit 1 and the backup drive circuit 2 in this example are core functional blocks, which are responsible for receiving the input signal of the switching module 3. They contain a control system and an energy storage start-up and drive system, and can drive the switch structure. The switching module 3 is a drive circuit switching block, which is composed of plug-in terminals and uses high-strength, high-current-carrying capacity terminals. When the circuit needs to be switched, the main and backup drive circuits are switched by manually operating the plug-in terminals. The interface module 4 is a 10-core State Grid standard aviation plug connector, which mainly serves the function of docking with the switch structure and relay protection equipment. The State Grid standard 10-core aviation plug is used to provide high reliability and matching, making the installation simple and stable.

[0035] Power supply system (power management module) design: single DC power input, 2 DC power outputs, 1 DC power output is connected to the energy storage capacitor, and the other DC power output is connected to the backup lithium battery.

[0036] The whole drive unit in this example adopts a fully modular integrated structure design, in which the energy storage module adopts an array design scheme, which is composed of multiple small capacitors. By selecting the connection arrangement between the capacitors, the capacity can be flexibly configured without changing the shell structure. In this example, different types of energy storage capacitors can be combined by welding different materials according to different occasions.

[0037] The bridge circuit part adopts an independent module design. After self-inspection finds that it is damaged, it can be quickly repaired by disassembling the damaged module and replacing it with a new one at the same time, without disassembling the entire module.

[0038] like Figure 2As shown, the CPU of the onboard MCU in this example is STM32 series, in this example it is STM32F030R8, and it also has 5 signal indicators, 4 inputs, 2 outputs, 1 serial port, reset module U7 and emulator interface JP1. It is responsible for driving the bridge circuit to perform self-test and action, and driving the control relay so that the power system can manage the battery charge and discharge.

[0039] like Figure 1 and Figure 3 As shown, in this example, a power input protection circuit is provided at the front end of the power management module to protect the entire module and the lithium battery.

[0040] The backup power supply in this example is a high-capacity lithium battery with a complete charge and discharge management solution. When the module is powered externally, the lithium battery is charged and managed. When the external power is lost (determined by collecting voltage), it can be activated by a button to power the module and maintain it for 5 minutes. After 5 minutes, the self-holding relay J25 is disconnected and remains disconnected until the next activation. When the lithium battery is fully charged, it can perform no less than 200 opening and closing operations.

[0041] When the battery is put into use, the CPU calculates the current battery voltage by collecting the voltage on the voltage divider resistor (AIN_DC), and starts battery charging and discharging according to the battery voltage value, that is, by controlling the relay J23 to be opened or closed. When J23 is closed, the battery is charged, and when J23 is disconnected, the battery is not charged.

[0042] In order to increase the life of lithium batteries and improve endurance, the battery management module in this example adopts the following management strategy for the backup power supply:

[0043] 1) Do not charge when the battery capacity is above 85%;

[0044] 2) When the battery is between 20% and 85%, charge it. After it is fully charged, continue to float charge for 2 hours to ensure that it is fully charged.

[0045] 3) When the battery power is between 0-20%, the battery stops supplying power to prevent over-discharge.

[0046] like Figure 5 As shown, the bridge circuit adopts an H-bridge circuit, the bridge input end is connected to the energy storage capacitor, and by receiving the control signal of the main control system, the bridge arm tube is driven to turn on, thereby achieving instantaneous output of large positive and negative currents.

[0047] As an embodiment of the present invention, the bridge circuit includes bidirectional thyristors T1, T2, T3, T4, transistors Q2, Q3, optical couplers OP10, OP11, OP12, OP13, and an interface J3, wherein:

[0048] The control ends of the bidirectional thyristors T1, T2, T3, and T4 and the base of the transistor Q2 are connected to the bridge circuit drive output end respectively, a diode is connected in parallel between the 1 and 2 pins of the bidirectional thyristors T1, T2, T3, and T4 respectively, and the positive pin 2 of the diode is connected to the 1 pin of the bidirectional thyristor connected to the negative pole of the power supply respectively, one end of the bidirectional thyristors T1 and T2 connected in series is connected to the power supply VH+, and the other end is connected to the collector of the transistor Q2, one end of the bidirectional thyristors T3 and T4 connected in series is connected to the power supply VF+, and the other end is connected to the collector of the transistor Q2, one end XQ+ of the load is connected between the bidirectional thyristors T1 and T2, and the other end XQ- of the load is connected between the bidirectional thyristors T3 and T4, and the load is connected in parallel with a voltage stabilizing diode D18,

[0049] Each bidirectional thyristor is connected in parallel with an optocoupler branch with the same structure, wherein the primary pin 1 of the optocoupler OP10 in the optocoupler branch of the bidirectional thyristor T1 is respectively connected to one end of the resistor R24 ​​of the resistor R23, one end of the resistor R23 is connected to the power supply VH+, the primary pin 2 of the optocoupler OP10 is respectively connected to the other end of the resistor R24 ​​and XQ+, the secondary pin 3 of the optocoupler OP10 is grounded, and the pin 4 is connected to the T1 KI pin 19 of the interface J3,

[0050] The base of the transistor Q2 is also connected to the K end of the voltage regulator tube D25, one end of the resistor R43 and the collector of the transistor Q3 respectively. The emitter of the transistor Q2 is connected to the A end of the voltage regulator tube D25, the other end of the resistor R23, the emitter of the transistor Q3, the resistor R46, one end of the capacitor C1, the resistor R100, the resistor R85, the resistor R93 and one end of the resistor R1 respectively. The base of the transistor Q3 and the other end of the resistor R46 and the capacitor C1 are connected to the OCP DRV1 pin 10 of the interface J3. The other ends of the resistor R85, the resistor R93 and the resistor R1 are connected to the power supply DC V-, the other end of the resistor R100 is connected to the in-phase input end of the power amplifier U8, the inverting input end of the power amplifier U8 is respectively connected to one end of the resistor R103 and one end of the resistor R104, the other end of the resistor R103 and the negative power pin of the power amplifier U8 are grounded, the other end of the resistor R104 and the positive power pin of the power amplifier U8 are connected to a 5V power supply, the output end of the power amplifier U8 is respectively connected to one end of the resistor R37 and the positive electrode of the diode D1, and the other end of the resistor R37 is connected to the OCP pin 7 of the interface J3.

[0051] The self-test module in this example includes a transistor Q4 and an optocoupler OP14, the base of the transistor Q4 is respectively connected to the output end of the self-test drive branch, one end of a resistor R47, and the K end of a voltage-stabilizing diode D26, the collector of the transistor Q4 is connected to the collector of the transistor Q2, the emitter of the transistor Q4, the other end of the resistor R47, and the A end of the voltage-stabilizing diode D26 are respectively connected to one end of a resistor R48, the other end of the resistor R48 is connected to the primary pin 1 of the optocoupler OP14 through a resistor R49, the primary pin 2 of the optocoupler OP14 is connected to the emitter of the transistor Q2, the resistor R50 and the resistor R51 are connected in parallel between the primary pin 1 and the pin 2 of the optocoupler OP14, the secondary pin 3 of the optocoupler OP14 is grounded, and the pin 4 is connected to the IGBT1 KI pin 11 of the interface J3.

[0052] like Figure 4 As shown, the driving module includes a driving chip U5 and 6 driving units with the same structure respectively connected to different pins of the driving chip U5, one of which is a self-test driving branch, which is used to drive bidirectional thyristors T1, T2, T3, T4, transistors Q2 and transistors Q4 respectively.

[0053] The first driving unit includes an optocoupler OP15, wherein the primary pin 1 of the optocoupler OP15 is connected to a 5V power supply through a resistor R8, the pin 2 is connected to the HZ SCR DRV1 pin 16 of the driving chip U5, the secondary pin 3 is connected to the bidirectional thyristor T1 control electrode, and the pin 4 is connected to the power supply DC V+ through a resistor R52.

[0054] The self-test principle of this example is:

[0055] The driving circuit is mainly composed of five power tubes: T1, T2, T3, T4, and Q2; therefore, the self-test is mainly performed on these five power tubes. Transistor Q4 is a power tube used for detection. When a power tube needs to be detected, the six tubes are driven to switch in a specified sequence, and the conduction signal of the tube is obtained through the optocoupler connected in parallel to each driving tube. The CPU reads the corresponding input signal to analyze and obtain the detection result of the driving tube.

[0056] During operation, the CPU periodically performs self-tests on the two bridge circuits. The self-test process is as follows:

[0057] Transistor Q2 short circuit detection: Turn on the transistor Q4 and read the input signal IGBT_KI. If the input signal disappears, it means that the transistor Q2 is short-circuited. Otherwise, it means that the transistor Q2 is not short-circuited. At this time, it is necessary to further detect whether the transistor Q2 is open circuit;

[0058] Transistor Q2 open circuit detection: Turn on transistors Q2 and Q4, read the input signal IGBT_KI, if the input signal does not disappear, it means that the transistor Q2 is open circuit, otherwise it means that Q2 is normal.

[0059] Bidirectional thyristor T1~T4 short circuit detection: Same as the short circuit detection of transistor Q2, turn on the transistor Q4 and read the corresponding input signal. If the corresponding input disappears, it means that the tube is short-circuited.

[0060] Bidirectional thyristor T1~T4 open circuit detection: Turn on the transistor Q4, and then turn on the bidirectional thyristor T1~T4 one by one, and read the input signal. If the corresponding input signal does not disappear, it means that the tube is open circuit.

[0061] When an abnormality is detected and confirmed twice, the CPU automatically marks and bypasses the bridge circuit and sends an alarm message.

[0062] Automatic maintenance plan output:

[0063] The bridge circuit self-check function will output self-check information according to the abnormal step points marked during the self-check process. When repairing, you only need to locate and repair according to the fault type corresponding to the abnormal step point.

[0064] The short circuit detection principle of the present invention is:

[0065] When an exit is actually needed, the corresponding T1~T4 tubes and Q2 tubes are driven to open 0.5ms before the formal exit. At this time, the voltage on R100 is quickly detected and the voltage value is read within 0.1ms. If the voltage exceeds the specified value, it means that the external coil is short-circuited, and the exit is immediately retracted. At this time, the subsequent exit will be immediately terminated and the alarm will be set. The alarm information disappears after the power is reset.

[0066] Compared with the prior art, the present invention has the following outstanding advantages:

[0067] (1) The overall module integrated design solves the problem of split installation, which is large in size, complex in installation process and has the risk of high voltage electric shock when installing capacitors;

[0068] (2) The module has an anti-short circuit function, which solves the problem of not being able to automatically detect when the coil is short-circuited and burning the drive circuit during driving;

[0069] (3) The module has an automatic detection function, which solves the problem of not being able to detect damage in time after the drive circuit is damaged;

[0070] (4) The drive circuit has a main and backup dual circuit, which solves the problem of no backup circuit and low reliability.

[0071] The specific implementation modes described above are preferred implementation modes of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation modes, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. A manually switchable dual-circuit permanent magnet switch drive module, characterized in that: It includes a main drive circuit and a backup drive circuit with the same structure, and also includes a switching module capable of manually switching the operation of the main drive circuit or the backup drive circuit, and an interface module for external devices and power supply. The main drive circuit includes a main control module, a bridge circuit, a bridge circuit driving module, a power management module and an energy storage module, wherein the main control module is respectively connected to the bridge circuit driving module and the power management module, the output end of the bridge circuit driving module is connected to the input end of the bridge circuit, and also includes a backup battery connected to the power management modules of the main drive circuit and the backup drive circuit respectively, the input end of the energy storage module is connected to the output end of the power management module, and the output end of the energy storage module is connected to the input end of the bridge circuit. When the circuit needs to be switched, the main and standby drive circuits can be switched by manually plugging and unplugging the terminals. The bridge circuit includes bidirectional thyristors T1, T2, T3, T4, transistors Q2, Q3, optical couplers OP10, OP11, OP12, OP13, and interface J3, wherein: The control ends of the bidirectional thyristors T1, T2, T3, and T4 and the base of the transistor Q2 are connected to the bridge circuit drive output end respectively, a diode is connected in parallel between the 1 and 2 pins of the bidirectional thyristors T1, T2, T3, and T4 respectively, and the positive pin 2 of the diode is connected to the 1 pin of the bidirectional thyristor connected to the negative pole of the power supply respectively, one end of the bidirectional thyristors T1 and T2 connected in series is connected to the power supply VH+, and the other end is connected to the collector of the transistor Q2, one end of the bidirectional thyristors T3 and T4 connected in series is connected to the power supply VF+, and the other end is connected to the collector of the transistor Q2, one end XQ+ of the load is connected between the bidirectional thyristors T1 and T2, and the other end XQ- of the load is connected between the bidirectional thyristors T3 and T4, and the load is connected in parallel with a voltage stabilizing diode D18, Each bidirectional thyristor is connected in parallel with an optocoupler branch with the same structure, wherein the primary pin 1 of the optocoupler OP10 in the optocoupler branch of the bidirectional thyristor T1 is respectively connected to one end of the resistor R24 ​​of the resistor R23, one end of the resistor R23 is connected to the power supply VH+, the primary pin 2 of the optocoupler OP10 is respectively connected to the other end of the resistor R24 ​​and XQ+, the secondary pin 3 of the optocoupler OP10 is grounded, and the pin 4 is connected to the T1 KI pin 19 of the interface J3, The base of the transistor Q2 is also connected to the K end of the voltage regulator tube D25, one end of the resistor R43 and the collector of the transistor Q3 respectively. The emitter of the transistor Q2 is connected to the A end of the voltage regulator tube D25, the other end of the resistor R23, the emitter of the transistor Q3, the resistor R46, one end of the capacitor C1, the resistor R100, the resistor R85, the resistor R93 and one end of the resistor R1 respectively. The base of the transistor Q3 and the other end of the resistor R46 and the capacitor C1 are connected to the OCP DRV1 pin 10 of the interface J3. The other ends of the resistor R85, the resistor R93 and the resistor R1 are connected to the power supply DC V-, the other end of the resistor R100 is connected to the in-phase input end of the power amplifier U8, the inverting input end of the power amplifier U8 is respectively connected to one end of the resistor R103 and one end of the resistor R104, the other end of the resistor R103 and the negative power pin of the power amplifier U8 are grounded, the other end of the resistor R104 and the positive power pin of the power amplifier U8 are connected to a 5V power supply, the output end of the power amplifier U8 is respectively connected to one end of the resistor R37 and the positive electrode of the diode D1, and the other end of the resistor R37 is connected to the OCP pin 7 of the interface J3.

2. The manually switchable dual-circuit permanent magnet switch drive module according to claim 1, characterized in that: It also includes a self-test module connected to the bridge circuit, and a self-test drive branch for driving the self-test module is arranged in the bridge circuit drive module.

3. The manually switchable dual-circuit permanent magnet switch drive module according to claim 2, characterized in that: The bridge circuit adopts an H-bridge circuit.

4. The manually switchable dual-circuit permanent magnet switch drive module according to claim 3 is characterized in that: The self-test module includes a transistor Q4 and an optocoupler OP14, the base of the transistor Q4 is respectively connected to the output end of the self-test drive branch, one end of a resistor R47, and the K end of a voltage-stabilizing diode D26, the collector of the transistor Q4 is connected to the collector of the transistor Q2, the emitter of the transistor Q4, the other end of the resistor R47, and the A end of the voltage-stabilizing diode D26 are respectively connected to one end of a resistor R48, the other end of the resistor R48 is connected to the primary pin 1 of the optocoupler OP14 through a resistor R49, the primary pin 2 of the optocoupler OP14 is connected to the emitter of the transistor Q2, the resistor R50 and the resistor R51 are connected in parallel between the primary pin 1 and the pin 2 of the optocoupler OP14, the secondary pin 3 of the optocoupler OP14 is grounded, and the pin 4 is connected to the IGBT1 KI pin 11 of the interface J3.

5. The manually switchable dual-circuit permanent magnet switch drive module according to claim 4, characterized in that: The driving module includes a driving chip U5 and 6 driving units with the same structure connected to different pins of the driving chip U5, one of which is a self-test driving branch, which is used to drive bidirectional thyristors T1, T2, T3, T4, transistors Q2 and transistors Q4 respectively.

6. The manually switchable dual-circuit permanent magnet switch drive module according to claim 5, characterized in that: The first driving unit includes an optocoupler OP15, wherein the primary pin 1 of the optocoupler OP15 is connected to a 5V power supply through a resistor R8, the pin 2 is connected to the HZ SCR DRV1 pin 16 of the driving chip U5, the secondary pin 3 is connected to the bidirectional thyristor T1 control electrode, and the pin 4 is connected to the power supply DC V+ through a resistor R52.

7. The manually switchable dual-circuit permanent magnet switch drive module according to any one of claims 1 to 6, characterized in that: The main control module includes a four-way input unit, a two-way output unit, one or more serial port units, an indication unit, a reset module and an emulator interface respectively connected to the main control chip U6.

8. The manually switchable dual-circuit permanent magnet switch drive module according to any one of claims 1 to 6, characterized in that: The dual-circuit permanent magnet switch drive module adopts an integrated design, wherein the bridge circuit is an independent module setting.

9. The manually switchable dual-circuit permanent magnet switch drive module according to claim 8, characterized in that: The energy storage module is arranged in an array and is composed of a plurality of capacitors. The capacity of the energy storage module is configured by selecting the connection arrangement between the capacitors.

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