Disconnecting switch control circuit, electric disconnecting switch and electrochemical energy storage system

Abstract

This application provides a disconnecting switch control circuit, an electric disconnecting switch, and an electrochemical energy storage system, including: a control signal input circuit, a main control circuit, a motor drive circuit, a motor position feedback circuit, a relay drive circuit, and a relay; the control signal input circuit outputs a corresponding drive control signal to the main control circuit according to the input control signal; the main control circuit drives the motor to rotate through the motor drive circuit according to the drive control signal; the motor position feedback circuit detects whether the motor has rotated to the target rotation position and outputs a position indication signal to the main control circuit based on the corresponding detection result; when the main control circuit determines that the motor has reached the target rotation position according to the position indication signal, it sends a relay drive signal to the relay drive circuit and controls the motor to stop rotating; when it determines that the motor has not reached the target rotation position, it controls the motor to keep rotating; the relay drive circuit drives the relay to operate according to the relay drive signal to reduce the power consumption during equipment operation.

Description

Technical Field

[0001] This application relates to the field of battery management system technology, and in particular to a disconnector control circuit, an electric disconnector, and an electrochemical energy storage system. Background Technology

[0002] Traditional electrochemical energy storage systems typically employ a control scheme of fuse + contactor + disconnector switch. (See [link to relevant documentation]). Figure 1 , Figure 1 A schematic diagram illustrating an application scenario of an electrochemical energy storage system for related technologies, such as... Figure 1 As shown, the energy storage converter can convert electrical energy into battery energy after passing through disconnecting switches, contactors, and fuses.

[0003] Due to the inherent structural characteristics of contactors, they require constant energization to maintain a connected state, resulting in high power consumption during operation. Furthermore, the flow of large currents can cause contactors to age or oxidize, leading to contact adhesion and posing a safety hazard during operation.

[0004] Reducing the power consumption of equipment during operation is an important problem that needs to be solved. Utility Model Content

[0005] This application provides a disconnecting switch control circuit, an electric disconnecting switch, and an electrochemical energy storage system to reduce power consumption during equipment operation.

[0006] In a first aspect, this application provides a disconnecting switch control circuit, which is applied to a disconnecting switch. The disconnecting switch control circuit includes: a control signal input circuit, a main control circuit, a motor drive circuit, a motor position feedback circuit, a relay drive circuit, and a relay. The main control circuit is electrically connected to the control signal input circuit, the motor drive circuit, the motor position feedback circuit, and the relay drive circuit, respectively. The relay drive circuit is electrically connected to the relay.

[0007] The control signal input circuit is used to output a corresponding drive control signal to the main control circuit according to the received input control signal; the input control signal indicates that the disconnecting switch is in a target working state, which is either a closed state or an open state;

[0008] The main control circuit is used to drive the motor in the disconnect switch to rotate through the motor drive circuit according to the drive control signal;

[0009] The motor position feedback circuit is used to detect whether the motor has rotated to the target rotation position, and output a position indication signal to the main control circuit based on the corresponding detection result. The target rotation position refers to the motor rotation position when the isolating switch is in the target working state.

[0010] The main control circuit is further configured to send a relay drive signal to the relay drive circuit when the motor reaches the target rotation position based on the position indication signal, and to send a motor control signal to the motor drive circuit to control the motor to stop rotating; it is also configured to control the motor to keep rotating through the motor drive circuit when the motor has not reached the target rotation position based on the position indication signal.

[0011] The relay driving circuit is used to drive the relay to operate according to the relay driving signal, so that the disconnecting switch is in the target working state.

[0012] In one possible design, the disconnect switch control circuit further includes: a motor current detection circuit and a voltage detection circuit;

[0013] The motor current detection circuit is electrically connected to the motor drive circuit and the main control circuit, respectively, and the voltage detection circuit is electrically connected to the main control circuit.

[0014] The motor current detection circuit is used to amplify the current of the motor, output a current sampling signal, and transmit it to the main control circuit.

[0015] The main control circuit is also used to control the motor to stop rotating through the motor drive circuit when the current sampling signal exceeds a preset current threshold.

[0016] The voltage detection circuit is used to divide the supply voltage, output the current voltage signal and transmit it to the main control circuit, so that the main control circuit can determine whether to respond to the drive control signal based on the current voltage signal.

[0017] In one possible design, the isolating switch control circuit further includes: a mode switching circuit; the mode switching circuit is electrically connected to the main control circuit;

[0018] The mode switching circuit, in response to the state of the mode switch, outputs a mode signal and transmits it to the main control circuit, so that the main control circuit performs a corresponding operation based on the mode signal, wherein the mode signal is used to characterize whether the isolating switch is in manual mode or electric mode.

[0019] In one possible design, the isolating switch control circuit further includes: a step-down circuit, which is electrically connected to the main control circuit, the motor drive circuit, the voltage detection circuit, and the relay drive circuit, respectively.

[0020] The step-down circuit is used to convert the supply voltage into a power supply voltage and provide power to the main control circuit, the motor drive circuit, the voltage detection circuit, and the relay drive circuit.

[0021] The step-down circuit includes: a varistor, a first inductor, a second inductor, a first diode, a first resistor, a second resistor, a third resistor, a first transistor, a second transistor, a third transistor, a Zener diode, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a step-down regulator; the voltage detection circuit includes: a twenty-ninth resistor, a thirtieth resistor, a thirty-first resistor, a twentyth capacitor, and a fifth diode.

[0022] The first and second ends of the varistor serve as the input terminals of the step-down circuit, used to connect to the power supply voltage. The first end of the varistor is electrically connected to the first end of the first inductor, and the second end of the first inductor is electrically connected to the first end of the first diode, the first end of the first resistor, the first end of the second resistor, the first end of the second transistor, and the first end of the third transistor, respectively.

[0023] The second terminal of the first diode is electrically connected to the second terminal of the varistor and the second terminal of the first transistor, respectively, and the control terminal of the first transistor is electrically connected to the second terminal of the first resistor.

[0024] The second end of the second resistor is electrically connected to the positive terminal of the Zener diode and the control terminal of the second transistor, respectively; the second end of the second transistor is electrically connected to the control terminal of the third transistor and the first end of the third resistor, respectively.

[0025] The second terminal of the third transistor is electrically connected to the positive terminal of the first capacitor, the first terminal of the second capacitor, and the first terminal of the buck regulator, respectively, with the first terminal of the second capacitor serving as the intermediate voltage terminal.

[0026] The fifth terminal of the buck regulator is electrically connected to the first terminal of the second inductor. The fourth terminal of the buck regulator is electrically connected to the second terminal of the second inductor, the first terminal of the third capacitor, the first terminal of the fourth capacitor, and the first terminal of the fifth capacitor, and serves as the output terminal of the buck circuit to output the power supply voltage.

[0027] The first terminal of the first transistor, the negative terminal of the Zener diode, the second terminal of the third resistor, the negative terminal of the first capacitor, the second terminal of the second capacitor, the second terminal of the third capacitor, the second terminal of the fourth capacitor, the second terminal of the fifth capacitor, and the second terminal of the buck regulator are all grounded;

[0028] The first end of the 29th resistor is electrically connected to the intermediate voltage terminal. The second end of the 29th resistor is electrically connected to the first end of the 30th resistor and the first end of the 31st resistor. The second end of the 31st resistor is electrically connected to the first end of the 20th capacitor and the positive terminal of the fifth diode, and serves as the output terminal of the voltage detection circuit to output the current voltage signal.

[0029] The negative terminal of the fifth diode is connected to the power supply voltage, and the second terminal of the thirtieth resistor and the second terminal of the twentieth capacitor are both grounded.

[0030] In one possible design, the control signal input circuit includes: a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a second diode, a first rectifier, a second rectifier, a first optocoupler, a second optocoupler, and a third optocoupler.

[0031] The input control signal includes a first input control signal, a second input control signal, and a third input control signal, and the drive control signal includes a first drive control signal, a second drive control signal, and a third drive control signal.

[0032] The first and second terminals of the sixth capacitor are used to connect to the first input control signal. The first terminal of the first rectifier is electrically connected to the second terminal of the sixth capacitor. The second terminal of the first rectifier is electrically connected to the first terminal of the sixth capacitor. The third terminal of the first rectifier is electrically connected to the first terminal of the fourth resistor. The fourth terminal of the first rectifier is electrically connected to the first terminal of the fifth resistor.

[0033] The second end of the fourth resistor is electrically connected to the second end of the first optocoupler, the second end of the fifth resistor is electrically connected to the first end of the first optocoupler, the fourth end of the first optocoupler is electrically connected to the first end of the seventh capacitor and the first end of the sixth resistor respectively, and serves as the output end of the control signal input circuit to output the first drive control signal, the second end of the sixth resistor is connected to the power supply voltage, and the third end of the first optocoupler and the second end of the seventh capacitor are both grounded;

[0034] The first and second terminals of the eighth capacitor are used to connect to the second input control signal. The first terminal of the second rectifier is electrically connected to the second terminal of the eighth capacitor. The second terminal of the second rectifier is electrically connected to the first terminal of the eighth capacitor. The third terminal of the second rectifier is electrically connected to the first terminal of the seventh resistor. The fourth terminal of the second rectifier is electrically connected to the first terminal of the eighth resistor.

[0035] The second end of the seventh resistor is electrically connected to the second end of the second optocoupler, the second end of the eighth resistor is electrically connected to the first end of the second optocoupler, the fourth end of the second optocoupler is electrically connected to the first end of the ninth capacitor and the first end of the ninth resistor respectively, and serves as the output end of the control signal input circuit to output the second drive control signal, the second end of the ninth resistor is connected to the power supply voltage, and the third end of the second optocoupler and the second end of the ninth capacitor are both grounded;

[0036] The first and second terminals of the tenth capacitor are used to connect to the third input control signal. The positive terminal of the second diode is electrically connected to the first terminal of the tenth capacitor, the negative terminal of the second diode is electrically connected to the first terminal of the tenth resistor, and the second terminal of the tenth capacitor is electrically connected to the first terminal of the eleventh resistor.

[0037] The second end of the tenth resistor is electrically connected to the second end of the third optocoupler, the second end of the eleventh resistor is electrically connected to the first end of the third optocoupler, the fourth end of the third optocoupler is electrically connected to the first end of the eleventh capacitor and the first end of the twelfth resistor respectively, and serves as the output end of the control signal input circuit to output the third drive control signal, the second end of the twelfth resistor is connected to the power supply voltage, and the third end of the third optocoupler and the second end of the eleventh capacitor are both grounded.

[0038] In one possible design, the motor drive circuit includes: a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a twelfth capacitor, a thirteenth capacitor, a third diode, and a motor drive chip; the motor current detection circuit includes: a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a fourteenth capacitor, and an operational amplifier;

[0039] The motor control signal includes: a first motor control signal and a second motor control signal;

[0040] The first end of the thirteenth resistor is used to connect to the second motor control signal, the first end of the fourteenth resistor is used to connect to the first motor control signal, the second end of the thirteenth resistor is electrically connected to the second end of the motor driver chip, the second end of the fourteenth resistor is electrically connected to the third end of the motor driver chip, and the first and ninth ends of the motor driver chip are both grounded.

[0041] The fourth terminal of the motor drive chip is connected to the power supply voltage. The fifth terminal of the motor drive chip is electrically connected to the first terminal of the twelfth capacitor, the positive terminal of the thirteenth capacitor, and the negative terminal of the third diode. The second terminal of the twelfth capacitor and the negative terminal of the thirteenth capacitor are both grounded. The positive terminal of the third diode is electrically connected to the intermediate voltage terminal.

[0042] The sixth and eighth terminals of the motor driver chip are electrically connected to the motor, the seventh terminal of the motor driver chip is electrically connected to the first terminal of the fifteenth resistor and the first terminal of the sixteenth resistor, respectively, and the second terminal of the fifteenth resistor is grounded.

[0043] The second end of the sixteenth resistor is electrically connected to the non-inverting input of the operational amplifier, the inverting input of the operational amplifier is electrically connected to the second end of the seventeenth resistor and the first end of the eighteenth resistor, the first end of the seventeenth resistor is grounded, and the second end of the eighteenth resistor is electrically connected to the first end of the nineteenth resistor and the output of the operational amplifier.

[0044] The second end of the nineteenth resistor is electrically connected to the first end of the fourteenth capacitor and serves as the output end of the motor current detection circuit to output the current sampling signal. The second end of the operational amplifier is connected to the power supply voltage.

[0045] The second terminal of the fourteenth capacitor and the fifth terminal of the operational amplifier are both grounded.

[0046] In one possible design, the main control circuit includes: a main controller, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a fifteenth capacitor, a sixteenth capacitor, a first indicator light, a second indicator light, and a program download chip; wherein, the position indication signal includes: a first position indication signal and a second position indication signal;

[0047] The first terminal of the fifteenth capacitor is connected to the power supply voltage, and the second terminal of the fifteenth capacitor is grounded.

[0048] The first end of the twentieth resistor is connected to the power supply voltage, the second end of the twentieth resistor is electrically connected to the first end of the sixteenth capacitor and the fourth end of the main controller, and the second end of the sixteenth capacitor is grounded.

[0049] The first end of the 23rd resistor is electrically connected to the 31st terminal of the main controller, and the second end of the 23rd resistor is grounded.

[0050] The positive terminals of the first indicator light and the second indicator light are connected to the power supply voltage. The negative terminal of the first indicator light is electrically connected to the second terminal of the 21st resistor. The negative terminal of the second indicator light is electrically connected to the second terminal of the 22nd resistor. The first terminal of the 21st resistor is electrically connected to the seventh terminal of the main controller. The first terminal of the 22nd resistor is electrically connected to the sixth terminal of the main controller.

[0051] The first terminal of the program download chip is connected to the power supply voltage, the fifth terminal of the program download chip is grounded, the seventh terminal of the program download chip is electrically connected to the twentieth terminal of the main controller, the eighth terminal of the program download chip is electrically connected to the nineteenth terminal of the main controller, the second terminal of the program download chip is electrically connected to the twenty-fourth terminal of the main controller, and the fourth terminal of the program download chip is electrically connected to the twenty-third terminal of the main controller.

[0052] The first, fifth, and seventeenth terminals of the main controller are all connected to the power supply voltage. The tenth terminal of the main controller is connected to the current voltage signal. The eleventh terminal of the main controller is connected to the first position indication signal. The twelfth terminal of the main controller is connected to the second position indication signal. The thirteenth terminal of the main controller is connected to the mode signal. The fourteenth terminal of the main controller is connected to the third drive control signal. The fifteenth terminal of the main controller is connected to the second drive control signal. The sixteenth terminal of the main controller is connected to the first drive control signal.

[0053] The 22nd terminal of the main controller is connected to the current sampling signal, the 26th terminal of the main controller is connected to the relay drive signal, the 27th terminal of the main controller is connected to the second motor control signal, the 28th terminal of the main controller is connected to the first motor control signal, and the 33rd terminal of the main controller is grounded.

[0054] In one possible design, the motor position feedback circuit includes: a 24th resistor, a 17th capacitor, a 25th resistor, an 18th capacitor, a first microswitch, and a second microswitch; the mode switching circuit includes: a 26th resistor, a 19th capacitor, and the mode switch; the relay drive circuit includes: a fourth diode, a fourth transistor, a 27th resistor, and a 28th resistor.

[0055] The first end of the 24th resistor is connected to the power supply voltage, the second end of the 24th resistor is electrically connected to the first end of the 17th capacitor, and serves as the output end of the motor position feedback circuit to output the first position indication signal. The second end of the 17th capacitor is grounded, and the first and second ends of the 17th capacitor are electrically connected to the first micro switch.

[0056] The first end of the 25th resistor is connected to the power supply voltage, the second end of the 25th resistor is electrically connected to the first end of the 18th capacitor, and serves as the output end of the motor position feedback circuit to output the second position indication signal. The second end of the 18th capacitor is grounded, and the first and second ends of the 18th capacitor are electrically connected to the second micro switch.

[0057] The first end of the 26th resistor is connected to the power supply voltage, the second end of the 26th resistor is electrically connected to the first end of the 19th capacitor and serves as the output end of the mode switching circuit to output the mode signal, the second end of the 19th capacitor is grounded, and the first and second ends of the 19th capacitor are electrically connected to the mode switch.

[0058] The negative terminal of the fourth diode is electrically connected to the intermediate voltage terminal and the second terminal of the relay, the positive terminal of the fourth diode is electrically connected to the first terminal of the relay and the second terminal of the fourth transistor, and the control terminal of the fourth transistor is electrically connected to the first terminal of the twenty-seventh resistor and the first terminal of the twenty-eighth resistor.

[0059] The second end of the 28th resistor is used to connect the relay drive signal, the fifth end of the relay is used as the common end, the fourth end of the relay is used as the normally open end, and the third end of the relay is used as the normally closed end.

[0060] The second terminal of the 27th resistor and the first terminal of the fourth transistor are both grounded.

[0061] In a second aspect, this application provides an electrically operated disconnecting switch, comprising: a disconnecting switch control circuit as described in the first aspect, and a disconnecting switch.

[0062] Thirdly, this application provides an electrochemical energy storage system, including: an electrically operated disconnecting switch as described in the second aspect.

[0063] The beneficial effects of the embodiments of this application are as follows:

[0064] In this embodiment, by adding a disconnector control circuit to the disconnector, the remote control function of the disconnector is realized, achieving the purpose of controlling the disconnector to be in a closed or open state. Adding a disconnector control circuit to the disconnector replaces the control scheme of contactor + disconnector in related technologies. By removing the contactor, the problem of contactor sticking is avoided. In addition, when the motor reaches the target rotation position, the motor is controlled to stop rotating, reducing the power consumption of the equipment during operation. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0066] Figure 1 A schematic diagram illustrating an application scenario of an electrochemical energy storage system for related technologies;

[0067] Figure 2 This is a schematic diagram of the structure of a disconnector switch control circuit provided in an embodiment of this application;

[0068] Figure 3 A schematic diagram of the circuit structure of a step-down circuit provided in an embodiment of this application;

[0069] Figure 4 A schematic diagram of the circuit structure of a voltage detection circuit provided in an embodiment of this application;

[0070] Figure 5 A schematic diagram of the circuit structure of a control signal input circuit provided in an embodiment of this application;

[0071] Figure 6 A schematic diagram of the circuit structure of a motor drive circuit and a motor current detection circuit provided in this application;

[0072] Figure 7 A schematic diagram of the circuit structure of a main control circuit provided in this application;

[0073] Figure 8 A schematic diagram of the circuit structure of a motor position feedback circuit and a mode switching circuit provided in this application;

[0074] Figure 9 A schematic diagram of the circuit structure of a relay driving circuit provided in this application;

[0075] Figure 10 This is a schematic diagram illustrating an application scenario of an electrochemical energy storage system provided in an embodiment of this application. Detailed Implementation

[0076] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c alone can mean: a alone, b alone, c alone, a combination of a and b, a combination of a and c, a combination of b and c, or a, b, and c, where a, b, and c can be single or multiple. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] The terms “center,” “longitudinal,” “lateral,” “up,” “down,” “left,” “right,” “front,” and “rear,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0078] The terms "connected" and "connected" should be interpreted broadly. For example, in circuit structures, "connected" or "connected" can refer not only to physical connections but also to electrical or signal connections. This could be a direct connection (physical connection) or an indirect connection via at least one intermediate component, as long as the circuit is connected. It could also refer to the internal connection between two components. Similarly, a signal connection can refer to a connection via a circuit or a medium, such as radio waves. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0079] To reduce power consumption during equipment operation, this application provides an isolation switch control circuit, see [link to relevant documentation]. Figure 2 , Figure 2 This is a schematic diagram of the structure of a disconnector switch control circuit provided in an embodiment of this application, as shown below. Figure 2As shown, the isolating switch control circuit 1000 includes: a control signal input circuit 100, a main control circuit 200, a motor drive circuit 300, a motor position feedback circuit 400, a relay drive circuit 500, and a relay; the main control circuit 200 is electrically connected to the control signal input circuit 100, the motor drive circuit 300, the motor position feedback circuit 400, and the relay drive circuit 500, respectively, and the relay drive circuit 500 is electrically connected to the relay.

[0080] The control signal input circuit 100 is used to output a corresponding drive control signal to the main control circuit according to the received input control signal; the input control signal indicates that the isolating switch is in the target working state, which is either the closed state or the open state.

[0081] The main control circuit 200 is used to drive the motor in the disconnect switch to rotate through the motor drive circuit 300 according to the drive control signal.

[0082] The motor position feedback circuit 400 is used to detect whether the motor has rotated to the target rotation position, and outputs a position indication signal to the main control circuit 200 based on the corresponding detection result. The target rotation position refers to the motor rotation position when the isolating switch is in the target working state.

[0083] The main control circuit 200 is also used to send a relay drive signal to the relay drive circuit 500 and a motor control signal to the motor drive circuit 300 to control the motor to stop rotating when the position indication signal determines that the motor has reached the target rotation position; it is also used to control the motor to keep rotating through the motor drive circuit 300 when the position indication signal determines that the motor has not reached the target rotation position.

[0084] The relay drive circuit 500 is used to drive the relay to operate according to the relay drive signal, so that the disconnect switch is in the target working state.

[0085] The disconnector control circuit in this application is used in the disconnector. The disconnector control circuit drives the motor to rotate, which drives the actuator to move. The movement of the actuator will drive the disconnector to move, thereby controlling the disconnector to be in the closed or open state.

[0086] Traditional disconnect switches are manual devices. This application applies a disconnect switch control circuit to a traditional disconnect switch, thereby realizing the remote control function of the disconnect switch by adding a disconnect switch control circuit to the disconnect switch.

[0087] The input control signal in this application is an external input signal provided by the battery management system to the disconnecting switch. The input control signal serves as the input signal of the disconnecting switch control circuit and is used to control the disconnecting switch to be in the closed or open state.

[0088] Specifically, after receiving the input control signal, the control signal input circuit 100 outputs a corresponding drive control signal to the main control circuit 200. The main control circuit 200 then drives the motor in the isolating switch to rotate through the motor drive circuit 300 according to the drive control signal.

[0089] The motor position feedback circuit 400 detects whether the motor has rotated to the target rotation position and outputs a position indication signal to the main control circuit 200 based on the detection result. The main control circuit 200 can determine whether the motor has rotated to the target rotation position based on the position indication signal. When the motor has reached the target rotation position, the main control circuit 200 sends a relay drive signal to the relay drive circuit 500 to drive the relay to operate, so that the disconnect switch is in the target working state, and sends a motor control signal to the motor drive circuit to control the motor to stop rotating. When the motor has not reached the target rotation position, the motor drive circuit controls the motor to keep rotating.

[0090] In this embodiment, by adding a disconnector control circuit to the disconnector, the remote control function of the disconnector is realized, achieving the purpose of controlling the disconnector to be in a closed or open state. Adding a disconnector control circuit to the disconnector replaces the control scheme of contactor + disconnector in related technologies. By removing the contactor, the problem of contactor sticking is avoided. In addition, when the motor reaches the target rotation position, the motor is controlled to stop rotating, reducing the power consumption of the equipment during operation.

[0091] In one possible embodiment, see Figure 2 The isolating switch control circuit 1000 also includes a motor current detection circuit 600 and a voltage detection circuit 700.

[0092] The motor current detection circuit 600 is electrically connected to the motor drive circuit 300 and the main control circuit 200, respectively, and the voltage detection circuit 700 is electrically connected to the main control circuit 200.

[0093] The motor current detection circuit 600 is used to amplify the motor current, output a current sampling signal, and transmit it to the main control circuit 200.

[0094] The main control circuit 200 is also used to control the motor to stop rotating through the motor drive circuit 300 when the current sampling signal exceeds the preset current threshold.

[0095] The voltage detection circuit 700 is used to divide the supply voltage, output the current voltage signal and transmit it to the main control circuit 200, so that the main control circuit 200 can determine whether to respond to the drive control signal based on the current voltage signal.

[0096] The preset current threshold can be set according to the user's needs, for example, the preset current threshold is 3A or the preset current threshold is 5A.

[0097] The motor current detection circuit 600 is used to control the motor to stop rotating when the motor current is too high, so as to prevent damage to the motor.

[0098] The voltage detection circuit 700 monitors the supply voltage and determines whether to respond to the drive control signal based on the current voltage signal, preventing malfunctions when the supply voltage is too high or too low. For example, when the supply voltage is below 15V, the system no longer responds to the drive control signal; when the supply voltage recovers to above 19V, the system responds to the drive control signal.

[0099] In one possible embodiment, see Figure 2 The isolating switch control circuit 1000 also includes a mode switching circuit 800; the mode switching circuit 800 is electrically connected to the main control circuit 200.

[0100] The mode switching circuit 800, in response to the state of the mode switch, outputs a mode signal and transmits it to the main control circuit 200, so that the main control circuit can perform the corresponding operation based on the mode signal. The mode signal is used to characterize whether the isolating switch is in manual mode or electric mode.

[0101] The mode switch can be rotated to different positions according to user needs, and outputs different level mode signals to the main control circuit 200 for different positions. When the mode switch is rotated to manual mode, the main control circuit 200 does not respond to the drive control signal and therefore does not drive the motor to rotate; when the mode switch is rotated to electric mode, the main control circuit 200 responds to the drive control signal and performs the corresponding operation based on the drive control signal.

[0102] In one possible embodiment, see Figure 2 The isolating switch control circuit 1000 also includes a step-down circuit 900, which is electrically connected to the main control circuit 200, the motor drive circuit 300, the voltage detection circuit 700, and the relay drive circuit 500.

[0103] The step-down circuit 900 is used to convert the supply voltage into the power supply voltage VCC and provide power to the main control circuit 200, the motor drive circuit 300, the voltage detection circuit 700, and the relay drive circuit 500.

[0104] Among them, see Figure 3 , Figure 3 A schematic diagram of a step-down circuit provided in an embodiment of this application is shown below. Figure 3As shown, the step-down circuit 900 includes: a varistor RV1, a first inductor L1, a second inductor L2, a first diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a first transistor Q1, a second transistor Q2, a third transistor Q3, a Zener diode ZD1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a step-down regulator U1; see also Figure 4 , Figure 4 This is a schematic diagram of the circuit structure of a voltage detection circuit provided in an embodiment of this application, as shown below. Figure 4 As shown, the voltage detection circuit 700 includes: the twenty-ninth resistor R29, the thirtieth resistor R30, the thirty-first resistor R31, the twentieth capacitor C20, and the fifth diode D5.

[0105] See Figure 3 The first and second ends of the varistor RV1 serve as the input terminals of the step-down circuit 900, used to connect to the power supply voltage (i.e., 24V+, 24V-). The first end of the varistor RV1 is electrically connected to the first end of the first inductor L1, and the second end of the first inductor L1 is electrically connected to the first end of the first diode D1, the first end of the first resistor R1, the first end of the second resistor R2, the first end of the second transistor Q2, and the first end of the third transistor Q3, respectively.

[0106] The second terminal of the first diode D1 is electrically connected to the second terminal of the varistor RV1 and the second terminal of the first transistor Q1, respectively. The control terminal of the first transistor Q1 is electrically connected to the second terminal of the first resistor R1.

[0107] The second end of the second resistor R2 is electrically connected to the positive terminal of the Zener diode ZD1 and the control terminal of the second transistor Q2, respectively. The second end of the second transistor Q2 is electrically connected to the control terminal of the third transistor Q3 and the first end of the third resistor R3, respectively.

[0108] The second terminal of the third transistor Q3 is electrically connected to the positive terminal of the first capacitor C1, the first terminal of the second capacitor C2, and the first terminal of the buck regulator U1, respectively, and the first terminal of the second capacitor C2 is used as the intermediate voltage terminal (i.e. +24V).

[0109] The fifth terminal of the buck regulator U1 is electrically connected to the first terminal of the second inductor L2. The fourth terminal of the buck regulator U1 is electrically connected to the second terminal of the second inductor L2, the first terminal of the third capacitor C3, the first terminal of the fourth capacitor C4, and the first terminal of the fifth capacitor C5, and serves as the output terminal of the buck circuit 900, outputting the power supply voltage VCC.

[0110] The first terminal of the first transistor Q1, the negative terminal of the Zener diode ZD1, the second terminal of the third resistor R3, the negative terminal of the first capacitor C1, the second terminal of the second capacitor C2, the second terminal of the third capacitor C3, the second terminal of the fourth capacitor C4, the second terminal of the fifth capacitor C5, and the second terminal of the buck regulator U1 are all grounded.

[0111] See Figure 4 The first end of the twenty-ninth resistor R29 is electrically connected to the intermediate voltage terminal (i.e., +24V). The second end of the twenty-ninth resistor R29 is electrically connected to the first end of the thirtieth resistor R30 and the first end of the thirty-first resistor R31. The second end of the thirty-first resistor R31 is electrically connected to the first end of the twentieth capacitor C20 and the positive terminal of the fifth diode D5, and serves as the output terminal of the voltage detection circuit 700, outputting the current voltage signal V_ADC.

[0112] The negative terminal of the fifth diode D5 is connected to the power supply voltage VCC, and the second terminal of the thirtieth resistor R30 and the second terminal of the twentieth capacitor C20 are both grounded.

[0113] In this application, the first transistor Q1, the second transistor Q2, and the third transistor Q3 can be bipolar transistors or field-effect transistors (FETs). For example, when the first transistor Q1, the second transistor Q2, and the third transistor Q3 are bipolar transistors, their control terminal refers to the base of the bipolar transistor, and the first terminal can be the collector or emitter of the bipolar transistor, while the corresponding second terminal can be the emitter or collector of the bipolar transistor. When the first transistor Q1, the second transistor Q2, and the third transistor Q3 are field-effect transistors (FETs), their control terminal refers to the gate of the field-effect transistor, and the first terminal can be the drain or source of the field-effect transistor, while the corresponding second terminal can be the source or drain of the field-effect transistor.

[0114] In one possible embodiment, the first transistor Q1 is an N-type MOS transistor, the second transistor Q2 is a PNP-type bipolar transistor, and the third transistor Q3 is a P-type MOS transistor.

[0115] In the case where the first transistor Q1 is an N-type MOS transistor, the control terminal of the first transistor Q1 refers to the gate of the N-type MOS transistor, the first terminal of the first transistor Q1 is the source of the N-type MOS transistor, and the corresponding second terminal of the first transistor Q1 is the drain of the N-type MOS transistor.

[0116] When the second transistor Q2 is a PNP bipolar transistor, the control terminal of the second transistor Q2 is the base of the PNP bipolar transistor, the first terminal of the second transistor Q2 is the emitter of the PNP bipolar transistor, and the corresponding second terminal of the second transistor Q2 is the collector of the PNP bipolar transistor.

[0117] When the third transistor Q3 is a P-type MOS transistor, the control terminal of the third transistor Q3 refers to the gate of the P-type MOS transistor, the first terminal of the third transistor Q3 is the source of the P-type MOS transistor, and the corresponding second terminal of the third transistor Q3 is the drain of the P-type MOS transistor.

[0118] In this embodiment, the power supply voltage is provided by an external system, typically 24VDC. See also... Figure 3 In the step-down circuit, the varistor RV1, the first inductor L1, and the first diode D1 constitute a surge protection circuit, providing surge protection for the step-down circuit. The first diode D1 can be a bidirectional TVS (Transient Voltage Suppressor) diode.

[0119] See Figure 3 The circuit consists of a first resistor R1 and a first transistor Q1 forming a reverse connection protection circuit to prevent damage to the step-down circuit and its subsequent circuits when the power supply voltage polarity is reversed. The circuit operates as follows: when the power supply voltage is correctly connected, the current flows from 24V+ to the load, then through the first transistor Q1 to 24V-. When the system is first powered on, and the first transistor Q1 is an N-type MOSFET, 24V- is connected to ground GND through the body diode of the first transistor Q1. When the voltage difference Vgs between the gate and source of the first transistor Q1 is greater than the threshold voltage Vth of the first transistor Q1, the first transistor Q1 conducts, and 24V- is connected to ground GND through the first transistor Q1. When the power supply voltage is reversed, the body diode of the first transistor Q1 is not conducting. At this time, the gate of the first transistor Q1 is electrically connected to 24V-. The voltage difference Vgs between the gate and source of the first transistor Q1 will not exceed the threshold voltage Vth of the first transistor Q1. The first transistor Q1 is cut off, the buck circuit cannot form a loop, the load does not work, and it will not cause damage to the subsequent circuit. This prevents damage to the buck circuit and its subsequent circuit when the power supply voltage polarity is reversed.

[0120] See Figure 3The circuit consists of a second resistor R2, a third resistor R3, a second transistor Q2, a third transistor Q3, and a Zener diode ZD1, forming an overvoltage protection circuit for overvoltage protection. The circuit operates as follows: When the supply voltage is normal, for example, 24V, the Zener diode ZD1 is not reverse-biased, and the current in the second resistor R2 is zero. When the second transistor Q2 is a PNP bipolar transistor, the voltage difference Vbe between its base and emitter is zero, meaning the second transistor Q2 is off. At this time, when the third transistor Q3 is a P-type MOSFET, it conducts, and the buck converter operates normally. When the power supply voltage is abnormal, for example, if the power supply voltage is 36V, which is much higher than 24V, the Zener diode ZD1 is reverse-broken. The voltage at the negative terminal of the Zener diode ZD1 is the reverse breakdown voltage Vbr of the Zener diode ZD1. When the second transistor Q2 is a PNP bipolar transistor, the second transistor Q2 is turned on, and the voltage difference Vce between the collector and emitter of the second transistor Q2 is equal to 0. At this time, when the third transistor Q3 is a P-type MOSFET, the voltage difference Vgs between the gate and source of the third transistor Q3 is equal to 0, the third transistor Q3 is turned off, the buck circuit is disconnected, and it cannot supply power to the subsequent circuit, thus achieving overvoltage protection.

[0121] See Figure 3 The circuit consists of capacitors C1, C2, C3, C4, and C5, along with a step-down regulator U1, which converts the supply voltage to the power supply voltage VCC. For example, it converts a 24V supply voltage to a 3.3V power supply voltage. The power supply voltage VCC can be set according to the user's needs; typically, it is 3.3V.

[0122] In this embodiment, the step-down circuit converts the supply voltage into a power supply voltage, providing power to the main control circuit, motor drive circuit, voltage detection circuit, and relay drive circuit. It also includes surge protection, reverse connection protection, and overvoltage protection. The intermediate voltage terminal (+24V) is the voltage after the supply voltage has passed through the aforementioned protection circuit; it remains 24V and is then converted to 3.3V by the step-down regulator U1. This 3.3V powers the main control circuit and, through the intermediate voltage terminal (+24V), powers the motor drive circuit, voltage detection circuit, and relay drive circuit.

[0123] See Figure 4The voltage detection circuit works as follows: the input 24V voltage is divided by resistors R29 (29th) and R30 (30th), limiting the divided voltage to below 3.3V to prevent damage to the main controller's ports if the voltage exceeds 3.3V. The divided voltage is then filtered by an RC filter circuit consisting of resistor R31 (31st) and capacitor C20 (20th) to obtain a stable current voltage signal V_ADC, which is transmitted to the main control circuit. The main control circuit uses this V_ADC signal to determine whether to respond to the drive control signal, preventing malfunctions due to excessively high or low supply voltage. For example, when the supply voltage is below 15V, the system no longer responds to the drive control signal; when the supply voltage recovers to above 19V, the system responds to the drive control signal.

[0124] In one possible embodiment, see Figure 5 , Figure 5 A schematic diagram of the circuit structure of a control signal input circuit provided in an embodiment of this application is shown below. Figure 5 As shown, the control signal input circuit 100 includes: a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a second diode D2, a first rectifier DB1, a second rectifier DB2, a first optocoupler U2, a second optocoupler U3, and a third optocoupler U4.

[0125] See Figure 5 The input control signals include: a first input control signal (i.e., IN_PRE+, IN_PRE-), a second input control signal (i.e., IN_MAIN+, IN_MAIN-), and a third input control signal (i.e., DIGITAL_IN+, DIGITAL_IN-), and the drive control signals include: a first drive control signal IN_PRE, a second drive control signal IN_MAIN, and a third drive control signal IN_RESVERD.

[0126] The first and second terminals of the sixth capacitor C6 are used to connect the first input control signal (i.e., IN_PRE+, IN_PRE-). The first terminal of the first rectifier DB1 is electrically connected to the second terminal of the sixth capacitor C6. The second terminal of the first rectifier DB1 is electrically connected to the first terminal of the sixth capacitor C6. The third terminal of the first rectifier DB1 is electrically connected to the first terminal of the fourth resistor R4. The fourth terminal of the first rectifier DB1 is electrically connected to the first terminal of the fifth resistor R5.

[0127] The second end of the fourth resistor R4 is electrically connected to the second end of the first optocoupler U2, the second end of the fifth resistor R5 is electrically connected to the first end of the first optocoupler U2, the fourth end of the first optocoupler U2 is electrically connected to the first end of the seventh capacitor C7 and the first end of the sixth resistor R6, and serves as the output end of the control signal input circuit 100, outputting the first drive control signal IN_PRE. The second end of the sixth resistor R6 is connected to the power supply voltage VCC, and the third end of the first optocoupler U2 and the second end of the seventh capacitor C7 are both grounded.

[0128] The first and second terminals of the eighth capacitor C8 are used to connect the second input control signal (i.e., IN_MAIN+, IN_MAIN-). The first terminal of the second rectifier DB2 is electrically connected to the second terminal of the eighth capacitor C8. The second terminal of the second rectifier DB2 is electrically connected to the first terminal of the eighth capacitor C8. The third terminal of the second rectifier DB2 is electrically connected to the first terminal of the seventh resistor R7. The fourth terminal of the second rectifier DB2 is electrically connected to the first terminal of the eighth resistor R8.

[0129] The second end of the seventh resistor R7 is electrically connected to the second end of the second optocoupler U3. The second end of the eighth resistor R8 is electrically connected to the first end of the second optocoupler U3. The fourth end of the second optocoupler U3 is electrically connected to the first end of the ninth capacitor C9 and the first end of the ninth resistor R9, and serves as the output end of the control signal input circuit 100, outputting the second drive control signal IN_MAIN. The second end of the ninth resistor R9 is connected to the power supply voltage VCC. The third end of the second optocoupler U3 and the second end of the ninth capacitor C9 are both grounded.

[0130] The first and second terminals of the tenth capacitor C10 are used to connect the third input control signal (i.e., DIGITAL_IN+ and DIGITAL_IN-). The positive terminal of the second diode D2 is electrically connected to the first terminal of the tenth capacitor C10, the negative terminal of the second diode D2 is electrically connected to the first terminal of the tenth resistor R10, and the second terminal of the tenth capacitor C10 is electrically connected to the first terminal of the eleventh resistor R11.

[0131] The second end of the tenth resistor R10 is electrically connected to the second end of the third optocoupler U4, the second end of the eleventh resistor R11 is electrically connected to the first end of the third optocoupler U4, the fourth end of the third optocoupler U4 is electrically connected to the first end of the eleventh capacitor C11 and the first end of the twelfth resistor R12 respectively, and serves as the output end of the control signal input circuit 100, outputting the third drive control signal IN_RESVERD. The second end of the twelfth resistor R12 is connected to the power supply voltage VCC, and the third end of the third optocoupler U4 and the second end of the eleventh capacitor C11 are both grounded.

[0132] The input control signals in this application are external input signals provided by the battery management system. These input control signals include: a first input control signal (i.e., IN_PRE+, IN_PRE-), a second input control signal (i.e., IN_MAIN+, IN_MAIN-), and a third input control signal (i.e., DIGITAL_IN+, DIGITAL_IN-). The energy storage converter can charge the battery through the main circuit or through the pre-charge circuit.

[0133] The first input control signal (IN_PRE+, IN_PRE-) is a reserved input signal interface for the precharge circuit; the second input control signal (IN_MAIN+, IN_MAIN-) is the input signal for the main circuit. For example, when a 24V voltage is connected, a command is issued to close the isolating switch to connect the main circuit; when a 0V voltage is connected, a command is issued to open the isolating switch to disconnect the main circuit; the third input control signal (DIGITAL_IN+, DIGITAL_IN-) is the input signal for forced opening and closing. When a 24V voltage is connected, the system enters a dual-open state. In this state, commands to close the isolating switch in either manual or electric mode are invalid. At this time, the system enters a maintenance state, and does not respond to any external input commands to prevent damage to the battery from closing operations. After maintenance is completed, the third input control signal (DIGITAL_IN+, DIGITAL_IN-) is connected to a 0V voltage, and the system exits the dual-open state.

[0134] See Figure 5Taking the circuit of the second input control signal (i.e., IN_MAIN+, IN_MAIN-) as an example, the working principle is explained as follows: When the second input control signal (i.e., IN_MAIN+, IN_MAIN-) is connected to a 24V voltage, that is, IN_MAIN+ is connected to 24V and IN_MAIN- is grounded, the second input control signal (i.e., IN_MAIN+, IN_MAIN-) first passes through the eighth capacitor C8 for filtering to prevent malfunctions caused by external interference, and then passes through the second rectifier DB2 to prevent the second input control signal (i.e., IN_MAIN+, IN_MAIN-) from being filtered. When IN- is reversed, it damages the subsequent circuitry. In this case, the first and second terminals of the second optocoupler U3 are connected, as are the third and fourth terminals. The second drive control signal IN_MAIN is low, and the main control circuit controls the motor to rotate, thus closing the disconnect switch. When the second input control signal (i.e., IN_MAIN+, IN_MAIN-) is connected to 0V, the third and fourth terminals of the second optocoupler U3 are disconnected, the second drive control signal IN_MAIN is high, and the main control circuit controls the motor to rotate, thus opening the disconnect switch. The main control circuit can control the motor to rotate based on the level of the second drive control signal IN_MAIN. The seventh resistor R7 and the eighth resistor R8 act as current-limiting resistors to prevent excessive current from causing permanent damage to the second optocoupler U3.

[0135] In one possible embodiment, see Figure 6 , Figure 6 A circuit structure diagram of a motor drive circuit and a motor current detection circuit provided in this application is shown below. Figure 6 As shown, the motor drive circuit 300 includes: a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a twelfth capacitor C12, a thirteenth capacitor C13, a third diode D3, and a motor drive chip U5; the motor current detection circuit 600 includes: a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a fourteenth capacitor C14, and an operational amplifier U6.

[0136] The motor control signals include: the first motor control signal OUT_MOTO1 and the second motor control signal OUT_MOTO2.

[0137] See Figure 6The first end of the thirteenth resistor R13 is used to connect the second motor control signal OUT_MOTO2, the first end of the fourteenth resistor R14 is used to connect the first motor control signal OUT_MOTO1, the second end of the thirteenth resistor R13 is electrically connected to the second end of the motor driver chip U5, the second end of the fourteenth resistor R14 is electrically connected to the third end of the motor driver chip U5, and the first and ninth ends of the motor driver chip U5 are both grounded.

[0138] The fourth terminal of the motor driver chip U5 is connected to the power supply voltage VCC. The fifth terminal of the motor driver chip U5 is electrically connected to the first terminal of the twelfth capacitor C12, the positive terminal of the thirteenth capacitor C13, and the negative terminal of the third diode D3. The second terminal of the twelfth capacitor C12 and the negative terminal of the thirteenth capacitor C13 are both grounded. The positive terminal of the third diode D3 is electrically connected to the intermediate voltage terminal (i.e., +24V).

[0139] The sixth and eighth terminals of the motor driver chip U5 are electrically connected to the motor. The seventh terminal of the motor driver chip U5 is electrically connected to the first terminal of the fifteenth resistor R15 and the first terminal of the sixteenth resistor R16, respectively. The second terminal of the fifteenth resistor R15 is grounded.

[0140] The second terminal of the sixteenth resistor R16 is electrically connected to the non-inverting input terminal of the operational amplifier U6. The inverting input terminal of the operational amplifier U6 is electrically connected to the second terminal of the seventeenth resistor R17 and the first terminal of the eighteenth resistor R18. The first terminal of the seventeenth resistor R17 is grounded. The second terminal of the eighteenth resistor R18 is electrically connected to the first terminal of the nineteenth resistor R19 and the output terminal of the operational amplifier U6.

[0141] The second end of the nineteenth resistor R19 is electrically connected to the first end of the fourteenth capacitor C14, and serves as the output terminal of the motor current detection circuit 600, outputting the current sampling signal V_ISEN. The second end of the operational amplifier U6 is connected to the power supply voltage VCC.

[0142] The second terminal of the fourteenth capacitor C14 and the fifth terminal of the operational amplifier U6 are both grounded.

[0143] In this application, the motor drive circuit controls the motor rotation through the first motor control signal OUT_MOTO1 and the second motor control signal OUT_MOTO2. The control logic is as follows: when the first motor control signal OUT_MOTO1 is low and the second motor control signal OUT_MOTO2 is high, the motor is controlled to rotate in reverse; when the first motor control signal OUT_MOTO1 is high and the second motor control signal OUT_MOTO2 is low, the motor is controlled to rotate in forward; when the first motor control signal OUT_MOTO1 is high and the second motor control signal OUT_MOTO2 is high, the motor is controlled to stop rotating.

[0144] The motor drive circuit is supplied with 24V power through the intermediate voltage terminal (i.e. +24V). The 24V voltage powers the motor drive chip U5 through the third diode D3. The unidirectional conductivity of the third diode D3 is used to prevent the back electromotive force of the motor during rotation from affecting the stability of the system. Then, it is filtered by the twelfth capacitor C12 and the thirteenth capacitor C13. After filtering, it enters the fifth terminal of the motor drive chip U5. The thirteenth capacitor C13 is a large-capacity electrolytic capacitor. When the power supply fails, the energy stored in it can make the motor open.

[0145] The sixth and eighth pins of the motor driver chip U5 are electrically connected to the motor, allowing for connection to a DC brushed motor. The seventh pin of the motor driver chip U5 is the ISEN control pin for the motor current. By setting the resistance value of the fifteenth resistor R15, the ISEN current of the motor can be controlled. The ISEN current is 3.3V divided by the resistance value of the fifteenth resistor R15.

[0146] To prevent damage to the motor from excessive current, a motor current detection circuit detects the motor current ISEN. The motor current ISEN is amplified by operational amplifier U6 and output as a current sampling signal V_ISEN, which is then transmitted to the main control circuit. When the current sampling signal V_ISEN exceeds a preset current threshold, the main control circuit controls the motor to stop rotating through the motor drive circuit.

[0147] In one possible embodiment, see Figure 7 , Figure 7 A schematic diagram of the circuit structure of a main control circuit provided in this application is shown below. Figure 7 As shown, the main control circuit 200 includes: a main controller U7, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a fifteenth capacitor C15, a sixteenth capacitor C16, a first indicator LED1, a second indicator LED2, and a program download chip U8; wherein, the position indication signals include: a first position indication signal IN_XW1 and a second position indication signal IN_XW2.

[0148] The first terminal of the fifteenth capacitor C15 is connected to the power supply voltage VCC, and the second terminal of the fifteenth capacitor C15 is grounded.

[0149] The first terminal of the twentieth resistor R20 is connected to the power supply voltage VCC. The second terminal of the twentieth resistor R20 is electrically connected to the first terminal of the sixteenth capacitor C16 and the fourth terminal of the main controller U7. The second terminal of the sixteenth capacitor C16 is grounded.

[0150] The first end of the twenty-third resistor R23 is electrically connected to the thirty-first terminal of the main controller U7, and the second end of the twenty-third resistor R23 is grounded.

[0151] The positive terminals of the first indicator LED1 and the second indicator LED2 are connected to the power supply voltage VCC. The negative terminal of the first indicator LED1 is electrically connected to the second terminal of the twenty-first resistor R21. The negative terminal of the second indicator LED1 is electrically connected to the second terminal of the twenty-second resistor R22. The first terminal of the twenty-first resistor R21 is electrically connected to the seventh terminal of the main controller U7. The first terminal of the twenty-second resistor R22 is electrically connected to the sixth terminal of the main controller U7.

[0152] The first terminal of the program download chip U8 is connected to the power supply voltage VCC, the fifth terminal of the program download chip U8 is grounded, the seventh terminal of the program download chip U8 is electrically connected to the twentieth terminal of the main controller U7, the eighth terminal of the program download chip U8 is electrically connected to the nineteenth terminal of the main controller U7, the second terminal of the program download chip U8 is electrically connected to the twenty-fourth terminal of the main controller U8, and the fourth terminal of the program download chip U8 is electrically connected to the twenty-third terminal of the main controller U8.

[0153] The first, fifth, and seventeenth terminals of the main controller U7 are all connected to the power supply voltage VCC. The tenth terminal of the main controller U7 is connected to the current voltage signal V_ADC. The eleventh terminal of the main controller U7 is connected to the first position indication signal IN_XW1. The twelfth terminal of the main controller U7 is connected to the second position indication signal IN_XW2. The thirteenth terminal of the main controller U7 is connected to the mode signal IN_MODE. The fourteenth terminal of the main controller U7 is connected to the third drive control signal IN_RESVERD. The fifteenth terminal of the main controller U7 is connected to the second drive control signal IN_MAIN. The sixteenth terminal of the main controller U7 is connected to the first drive control signal IN_PRE.

[0154] The 22nd terminal of the main controller U7 is connected to the current sampling signal V_ISEN, the 26th terminal of the main controller U7 is connected to the relay drive signal OUT_ALARM, the 27th terminal of the main controller U7 is connected to the second motor control signal OUT_MOTO2, the 28th terminal of the main controller U7 is connected to the first motor control signal OUT_MOTO1, and the 33rd terminal of the main controller is grounded.

[0155] The 31st pin of the main controller U7 is the BOOT0 pin, used to set the startup mode of the main controller. This pin is grounded through the 23rd resistor R23. The 20th resistor and the 16th capacitor form a reset circuit that is electrically connected to the 4th pin of the main controller.

[0156] The second terminal of the program download chip U8 is electrically connected to the twenty-fourth terminal of the main controller U8, and the fourth terminal of the program download chip U8 is electrically connected to the twenty-third terminal of the main controller U8. That is, the program download chip U8 downloads programs to the main controller U7 through SWCLK and SWDIO.

[0157] The seventh pin of the program download chip U8 is electrically connected to the twentieth pin of the main controller U7, and the eighth pin of the program download chip U8 is electrically connected to the nineteenth pin of the main controller U7. That is, the program download chip U8 is electrically connected to the corresponding pins of the main controller U7 through USART1_RX and USART1_TX for debugging.

[0158] The first indicator LED1 and the second indicator LED2 indicate the current status of the isolating switch according to the closing indication signal LED_CLOSE and the opening indication signal LED_OPEN output by the main controller U7.

[0159] In one possible embodiment, see Figure 8 , Figure 8 A circuit structure diagram of a motor position feedback circuit and a mode switching circuit provided in this application is shown below. Figure 8 As shown, the motor position feedback circuit 400 includes: a 24th resistor R24, a 17th capacitor C17, a 25th resistor R25, an 18th capacitor C18, a first micro switch, and a second micro switch; the mode switching circuit 800 includes: a 26th resistor R26, a 19th capacitor C19, and a mode switch; see also... Figure 9 , Figure 9 This application provides a schematic diagram of the circuit structure of a relay driving circuit, as shown below. Figure 9 As shown, the relay drive circuit includes: a fourth diode D4, a fourth transistor Q4, a twenty-seventh resistor R27, and a twenty-eighth resistor R28.

[0160] See Figure 8 The first end of the twenty-fourth resistor R24 ​​is connected to the power supply voltage VCC. The second end of the twenty-fourth resistor R24 ​​is electrically connected to the first end of the seventeenth capacitor C17 and serves as the output terminal of the motor position feedback circuit 400, outputting the first position indication signal IN_XW1. The second end of the seventeenth capacitor C17 is grounded. The first and second ends of the seventeenth capacitor C17 are electrically connected to the first micro switch.

[0161] The first terminal of the 25th resistor R25 is connected to the power supply voltage VCC. The second terminal of the 25th resistor R25 is electrically connected to the first terminal of the 18th capacitor C18 and serves as the output terminal of the motor position feedback circuit 400, outputting the second position indication signal IN_XW2. The second terminal of the 18th capacitor C18 is grounded. The first and second terminals of the 18th capacitor C18 are electrically connected to the second micro switch.

[0162] The first terminal of the twenty-sixth resistor R26 is connected to the power supply voltage VCC. The second terminal of the twenty-sixth resistor R26 is electrically connected to the first terminal of the nineteenth capacitor C19 and serves as the output terminal of the mode switching circuit 800, outputting the mode signal IN_MODE. The second terminal of the nineteenth capacitor C19 is grounded. The first and second terminals of the nineteenth capacitor C19 are electrically connected to the mode switch.

[0163] See Figure 9 The cathode of the fourth diode D4 is electrically connected to the intermediate voltage terminal (i.e., +24V) and the second terminal of the relay KS, respectively. The anode of the fourth diode D4 is electrically connected to the first terminal of the relay KS and the second terminal of the fourth transistor Q4, respectively. The control terminal of the fourth transistor Q4 is electrically connected to the first terminal of the twenty-seventh resistor R27 and the first terminal of the twenty-eighth resistor R28, respectively.

[0164] The second terminal of resistor R28 is used to connect the relay drive signal OUT_ALARM. The fifth terminal of relay KS is used as the common terminal ALARM-COM, the fourth terminal of relay KS is used as the normally open terminal ALARM-NO, and the third terminal of relay KS is used as the normally closed terminal ALARM-NC.

[0165] The second terminal of resistor R27 (the 27th resistor) and the first terminal of transistor Q4 (the 4th transistor) are both grounded.

[0166] In this application, the fourth transistor Q4 can be a bipolar transistor or a field-effect transistor (FET). For example, when the fourth transistor Q4 is a bipolar transistor, its control terminal is the base of the bipolar transistor, the first terminal can be the collector or emitter of the bipolar transistor, and the corresponding second terminal can be the emitter or collector of the bipolar transistor; when the fourth transistor Q4 is a field-effect transistor, its control terminal is the gate of the field-effect transistor, the first terminal can be the drain or source of the field-effect transistor, and the corresponding second terminal can be the source or drain of the field-effect transistor.

[0167] In one possible embodiment, the fourth transistor Q4 is an N-type MOS transistor. When the fourth transistor Q4 is an N-type MOS transistor, the control terminal of the fourth transistor Q4 refers to the gate of the N-type MOS transistor, the first terminal of the fourth transistor Q4 is the source of the N-type MOS transistor, and the corresponding second terminal of the fourth transistor Q4 is the drain of the N-type MOS transistor.

[0168] In this application, the first and second microswitches serve as limit switches. When the motor rotates to the target rotation position, the actuator touches the microswitches, causing them to switch from a normally open state to a normally closed state. Based on the different states of the microswitches, different level first position indication signals IN_XW1 and IN_XW2 are obtained. For example, see... Figure 8When the first micro switch is in the normally open state, the first position indication signal IN_XW1 is at a high level. When the motor rotates to the target rotation position, the actuator will touch the micro switch, causing the micro switch to switch from the normally open state to the normally closed state. When this happens, the first position indication signal IN_XW1 will be at a low level. Therefore, the first position indication signal IN_XW1 can be used to determine whether the motor has rotated to the target rotation position.

[0169] In one example, the first microswitch can be set to the closed position and the second microswitch can be set to the open position. Then, the state of the isolating switch can be determined by the first position indication signal IN_XW1 and the second position indication signal IN_XW2.

[0170] When the disconnector control circuit receives a closing command, the main controller drives the motor to rotate. When the motor rotates to the closing position, it stops rotating. When the disconnector control circuit receives a opening command, the main controller drives the motor to rotate. When the motor rotates to the opening position, it stops rotating.

[0171] The relay drive circuit activates the relay based on the relay drive signal OUT_ALARM. Its working principle is as follows: When the disconnector is closed, the relay drive signal OUT_ALARM is high, the fourth transistor Q4 is turned on, the relay is energized, and the common terminal ALARM-COM of relay KS is connected to the normally open terminal ALARM-NO. When the disconnector is open, the relay drive signal OUT_ALARM is low, the fourth transistor Q4 is turned off, the relay is deactivated, and the common terminal ALARM-COM of relay KS is connected to the normally closed terminal ALARM-NC. The external control system can determine whether the disconnector is closed or open based on the states of the common terminal ALARM-COM, the normally open terminal ALARM-NO, and the normally closed terminal ALARM-NC.

[0172] See Figure 10 , Figure 10 This is a schematic diagram illustrating an application scenario of an electrochemical energy storage system provided in an embodiment of this application, such as... Figure 10 As shown in the figure, an electrochemical energy storage system 102 provided in this application embodiment includes an electrically disconnecting switch 10. In one possible embodiment, the electrochemical energy storage system may further include a fuse.

[0173] See Figure 10 The electric disconnect switch 10 includes the aforementioned disconnect switch control circuit and disconnect switch 101. In one possible embodiment, the electric disconnect switch may further include an actuator connected to a motor.

[0174] This application embodiment also provides an electric disconnect switch 10, including: the disconnect switch control circuit as described above and the disconnect switch 101. The disconnect switch 101 includes multiple switches, which can be connected to the main circuit or the pre-charge circuit.

[0175] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A disconnector switch control circuit, characterized in that, The disconnector switch control circuit is applied to the disconnector switch. The disconnector switch control circuit includes: a control signal input circuit, a main control circuit, a motor drive circuit, a motor position feedback circuit, a relay drive circuit, and a relay. The main control circuit is electrically connected to the control signal input circuit, the motor drive circuit, the motor position feedback circuit, and the relay drive circuit, respectively. The relay drive circuit is electrically connected to the relay. The control signal input circuit is used to output a corresponding drive control signal to the main control circuit according to the received input control signal; the input control signal indicates that the disconnecting switch is in a target working state, which is either a closed state or an open state; The main control circuit is used to drive the motor in the disconnect switch to rotate through the motor drive circuit according to the drive control signal; The motor position feedback circuit is used to detect whether the motor has rotated to the target rotation position, and output a position indication signal to the main control circuit based on the corresponding detection result. The target rotation position refers to the motor rotation position when the isolating switch is in the target working state. The main control circuit is further configured to send a relay drive signal to the relay drive circuit when the motor reaches the target rotation position based on the position indication signal, and to send a motor control signal to the motor drive circuit to control the motor to stop rotating; it is also configured to control the motor to keep rotating through the motor drive circuit when the motor has not reached the target rotation position based on the position indication signal. The relay driving circuit is used to drive the relay to operate according to the relay driving signal, so that the disconnecting switch is in the target working state.

2. The isolating switch control circuit according to claim 1, characterized in that, The disconnector switch control circuit also includes: a motor current detection circuit and a voltage detection circuit; The motor current detection circuit is electrically connected to the motor drive circuit and the main control circuit, respectively, and the voltage detection circuit is electrically connected to the main control circuit. The motor current detection circuit is used to amplify the current of the motor, output a current sampling signal, and transmit it to the main control circuit. The main control circuit is also used to control the motor to stop rotating through the motor drive circuit when the current sampling signal exceeds a preset current threshold. The voltage detection circuit is used to divide the supply voltage, output the current voltage signal and transmit it to the main control circuit, so that the main control circuit can determine whether to respond to the drive control signal based on the current voltage signal.

3. The isolating switch control circuit according to claim 2, characterized in that, The disconnector switch control circuit further includes: a mode switching circuit; the mode switching circuit is electrically connected to the main control circuit. The mode switching circuit, in response to the state of the mode switch, outputs a mode signal and transmits it to the main control circuit, so that the main control circuit performs a corresponding operation based on the mode signal, wherein the mode signal is used to characterize whether the isolating switch is in manual mode or electric mode.

4. The isolating switch control circuit according to claim 3, characterized in that, The isolating switch control circuit further includes a step-down circuit, which is electrically connected to the main control circuit, the motor drive circuit, the voltage detection circuit, and the relay drive circuit, respectively. The step-down circuit is used to convert the supply voltage into a power supply voltage and provide power to the main control circuit, the motor drive circuit, the voltage detection circuit, and the relay drive circuit. The step-down circuit includes: a varistor, a first inductor, a second inductor, a first diode, a first resistor, a second resistor, a third resistor, a first transistor, a second transistor, a third transistor, a Zener diode, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a step-down regulator; the voltage detection circuit includes: a twenty-ninth resistor, a thirtieth resistor, a thirty-first resistor, a twentyth capacitor, and a fifth diode. The first and second ends of the varistor serve as the input terminals of the step-down circuit, used to connect to the power supply voltage. The first end of the varistor is electrically connected to the first end of the first inductor, and the second end of the first inductor is electrically connected to the first end of the first diode, the first end of the first resistor, the first end of the second resistor, the first end of the second transistor, and the first end of the third transistor, respectively. The second terminal of the first diode is electrically connected to the second terminal of the varistor and the second terminal of the first transistor, respectively, and the control terminal of the first transistor is electrically connected to the second terminal of the first resistor. The second end of the second resistor is electrically connected to the positive terminal of the Zener diode and the control terminal of the second transistor, respectively; the second end of the second transistor is electrically connected to the control terminal of the third transistor and the first end of the third resistor, respectively. The second terminal of the third transistor is electrically connected to the positive terminal of the first capacitor, the first terminal of the second capacitor, and the first terminal of the buck regulator, respectively, with the first terminal of the second capacitor serving as the intermediate voltage terminal. The fifth terminal of the buck regulator is electrically connected to the first terminal of the second inductor. The fourth terminal of the buck regulator is electrically connected to the second terminal of the second inductor, the first terminal of the third capacitor, the first terminal of the fourth capacitor, and the first terminal of the fifth capacitor, and serves as the output terminal of the buck circuit to output the power supply voltage. The first terminal of the first transistor, the negative terminal of the Zener diode, the second terminal of the third resistor, the negative terminal of the first capacitor, the second terminal of the second capacitor, the second terminal of the third capacitor, the second terminal of the fourth capacitor, the second terminal of the fifth capacitor, and the second terminal of the buck regulator are all grounded; The first end of the 29th resistor is electrically connected to the intermediate voltage terminal. The second end of the 29th resistor is electrically connected to the first end of the 30th resistor and the first end of the 31st resistor. The second end of the 31st resistor is electrically connected to the first end of the 20th capacitor and the positive terminal of the fifth diode, and serves as the output terminal of the voltage detection circuit to output the current voltage signal. The negative terminal of the fifth diode is connected to the power supply voltage, and the second terminal of the thirtieth resistor and the second terminal of the twentieth capacitor are both grounded.

5. The isolating switch control circuit according to claim 4, characterized in that, The control signal input circuit includes: a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a second diode, a first rectifier, a second rectifier, a first optocoupler, a second optocoupler, and a third optocoupler. The input control signal includes a first input control signal, a second input control signal, and a third input control signal, and the drive control signal includes a first drive control signal, a second drive control signal, and a third drive control signal. The first and second terminals of the sixth capacitor are used to connect to the first input control signal. The first terminal of the first rectifier is electrically connected to the second terminal of the sixth capacitor. The second terminal of the first rectifier is electrically connected to the first terminal of the sixth capacitor. The third terminal of the first rectifier is electrically connected to the first terminal of the fourth resistor. The fourth terminal of the first rectifier is electrically connected to the first terminal of the fifth resistor. The second end of the fourth resistor is electrically connected to the second end of the first optocoupler, the second end of the fifth resistor is electrically connected to the first end of the first optocoupler, the fourth end of the first optocoupler is electrically connected to the first end of the seventh capacitor and the first end of the sixth resistor respectively, and serves as the output end of the control signal input circuit to output the first drive control signal, the second end of the sixth resistor is connected to the power supply voltage, and the third end of the first optocoupler and the second end of the seventh capacitor are both grounded; The first and second terminals of the eighth capacitor are used to connect to the second input control signal. The first terminal of the second rectifier is electrically connected to the second terminal of the eighth capacitor. The second terminal of the second rectifier is electrically connected to the first terminal of the eighth capacitor. The third terminal of the second rectifier is electrically connected to the first terminal of the seventh resistor. The fourth terminal of the second rectifier is electrically connected to the first terminal of the eighth resistor. The second end of the seventh resistor is electrically connected to the second end of the second optocoupler, the second end of the eighth resistor is electrically connected to the first end of the second optocoupler, the fourth end of the second optocoupler is electrically connected to the first end of the ninth capacitor and the first end of the ninth resistor respectively, and serves as the output end of the control signal input circuit to output the second drive control signal, the second end of the ninth resistor is connected to the power supply voltage, and the third end of the second optocoupler and the second end of the ninth capacitor are both grounded; The first and second terminals of the tenth capacitor are used to connect to the third input control signal. The positive terminal of the second diode is electrically connected to the first terminal of the tenth capacitor, the negative terminal of the second diode is electrically connected to the first terminal of the tenth resistor, and the second terminal of the tenth capacitor is electrically connected to the first terminal of the eleventh resistor. The second end of the tenth resistor is electrically connected to the second end of the third optocoupler, the second end of the eleventh resistor is electrically connected to the first end of the third optocoupler, the fourth end of the third optocoupler is electrically connected to the first end of the eleventh capacitor and the first end of the twelfth resistor respectively, and serves as the output end of the control signal input circuit to output the third drive control signal, the second end of the twelfth resistor is connected to the power supply voltage, and the third end of the third optocoupler and the second end of the eleventh capacitor are both grounded.

6. The isolating switch control circuit according to claim 5, characterized in that, The motor drive circuit includes: a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a twelfth capacitor, a thirteenth capacitor, a third diode, and a motor drive chip; the motor current detection circuit includes: a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a fourteenth capacitor, and an operational amplifier; The motor control signals include: a first motor control signal and a second motor control signal; The first end of the thirteenth resistor is used to connect to the second motor control signal, the first end of the fourteenth resistor is used to connect to the first motor control signal, the second end of the thirteenth resistor is electrically connected to the second end of the motor driver chip, the second end of the fourteenth resistor is electrically connected to the third end of the motor driver chip, and the first and ninth ends of the motor driver chip are both grounded. The fourth terminal of the motor drive chip is connected to the power supply voltage. The fifth terminal of the motor drive chip is electrically connected to the first terminal of the twelfth capacitor, the positive terminal of the thirteenth capacitor, and the negative terminal of the third diode. The second terminal of the twelfth capacitor and the negative terminal of the thirteenth capacitor are both grounded. The positive terminal of the third diode is electrically connected to the intermediate voltage terminal. The sixth and eighth terminals of the motor driver chip are electrically connected to the motor, the seventh terminal of the motor driver chip is electrically connected to the first terminal of the fifteenth resistor and the first terminal of the sixteenth resistor, respectively, and the second terminal of the fifteenth resistor is grounded. The second end of the sixteenth resistor is electrically connected to the non-inverting input of the operational amplifier, the inverting input of the operational amplifier is electrically connected to the second end of the seventeenth resistor and the first end of the eighteenth resistor, the first end of the seventeenth resistor is grounded, and the second end of the eighteenth resistor is electrically connected to the first end of the nineteenth resistor and the output of the operational amplifier. The second end of the nineteenth resistor is electrically connected to the first end of the fourteenth capacitor and serves as the output end of the motor current detection circuit to output the current sampling signal. The second end of the operational amplifier is connected to the power supply voltage. The second terminal of the fourteenth capacitor and the fifth terminal of the operational amplifier are both grounded.

7. The isolating switch control circuit according to claim 6, characterized in that, The main control circuit includes: a main controller, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a fifteenth capacitor, a sixteenth capacitor, a first indicator light, a second indicator light, and a program download chip; wherein, the position indication signal includes: a first position indication signal and a second position indication signal; The first terminal of the fifteenth capacitor is connected to the power supply voltage, and the second terminal of the fifteenth capacitor is grounded. The first end of the twentieth resistor is connected to the power supply voltage, the second end of the twentieth resistor is electrically connected to the first end of the sixteenth capacitor and the fourth end of the main controller, and the second end of the sixteenth capacitor is grounded. The first end of the 23rd resistor is electrically connected to the 31st terminal of the main controller, and the second end of the 23rd resistor is grounded. The positive terminals of the first indicator light and the second indicator light are connected to the power supply voltage. The negative terminal of the first indicator light is electrically connected to the second terminal of the 21st resistor. The negative terminal of the second indicator light is electrically connected to the second terminal of the 22nd resistor. The first terminal of the 21st resistor is electrically connected to the seventh terminal of the main controller. The first terminal of the 22nd resistor is electrically connected to the sixth terminal of the main controller. The first terminal of the program download chip is connected to the power supply voltage, the fifth terminal of the program download chip is grounded, the seventh terminal of the program download chip is electrically connected to the twentieth terminal of the main controller, the eighth terminal of the program download chip is electrically connected to the nineteenth terminal of the main controller, the second terminal of the program download chip is electrically connected to the twenty-fourth terminal of the main controller, and the fourth terminal of the program download chip is electrically connected to the twenty-third terminal of the main controller. The first, fifth, and seventeenth terminals of the main controller are all connected to the power supply voltage. The tenth terminal of the main controller is connected to the current voltage signal. The eleventh terminal of the main controller is connected to the first position indication signal. The twelfth terminal of the main controller is connected to the second position indication signal. The thirteenth terminal of the main controller is connected to the mode signal. The fourteenth terminal of the main controller is connected to the third drive control signal. The fifteenth terminal of the main controller is connected to the second drive control signal. The sixteenth terminal of the main controller is connected to the first drive control signal. The 22nd terminal of the main controller is connected to the current sampling signal, the 26th terminal of the main controller is connected to the relay drive signal, the 27th terminal of the main controller is connected to the second motor control signal, the 28th terminal of the main controller is connected to the first motor control signal, and the 33rd terminal of the main controller is grounded.

8. The disconnector switch control circuit according to claim 7, characterized in that, The motor position feedback circuit includes: a 24th resistor, a 17th capacitor, a 25th resistor, an 18th capacitor, a first micro switch, and a second micro switch; the mode switching circuit includes: a 26th resistor, a 19th capacitor, and the mode switch; the relay drive circuit includes: a fourth diode, a fourth transistor, a 27th resistor, and a 28th resistor; The first end of the 24th resistor is connected to the power supply voltage, the second end of the 24th resistor is electrically connected to the first end of the 17th capacitor, and serves as the output end of the motor position feedback circuit to output the first position indication signal. The second end of the 17th capacitor is grounded, and the first and second ends of the 17th capacitor are electrically connected to the first micro switch. The first end of the 25th resistor is connected to the power supply voltage, the second end of the 25th resistor is electrically connected to the first end of the 18th capacitor, and serves as the output end of the motor position feedback circuit to output the second position indication signal. The second end of the 18th capacitor is grounded, and the first and second ends of the 18th capacitor are electrically connected to the second micro switch. The first end of the 26th resistor is connected to the power supply voltage, the second end of the 26th resistor is electrically connected to the first end of the 19th capacitor and serves as the output end of the mode switching circuit to output the mode signal, the second end of the 19th capacitor is grounded, and the first and second ends of the 19th capacitor are electrically connected to the mode switch. The negative terminal of the fourth diode is electrically connected to the intermediate voltage terminal and the second terminal of the relay, the positive terminal of the fourth diode is electrically connected to the first terminal of the relay and the second terminal of the fourth transistor, and the control terminal of the fourth transistor is electrically connected to the first terminal of the twenty-seventh resistor and the first terminal of the twenty-eighth resistor. The second end of the 28th resistor is used to connect the relay drive signal, the fifth end of the relay is used as the common end, the fourth end of the relay is used as the normally open end, and the third end of the relay is used as the normally closed end. The second terminal of the 27th resistor and the first terminal of the fourth transistor are both grounded.

9. An electrically operated disconnect switch, characterized in that, include: The disconnector control circuit and disconnector as described in any one of claims 1-8.

10. An electrochemical energy storage system, characterized in that, include: The electrically operated disconnect switch as described in claim 9.

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