False operation prevention and self-checking redundancy device for remote nuclear battery discharge equipment

Abstract

This invention discloses a device for preventing malfunctions and providing self-checking redundancy in a remote capacity-controlled battery discharge system. It includes one input interface circuit and two switch control and feedback units. The input interface circuit connects to three DC circuit breakers in the main circuit and three DC contactors in the discharge circuit of the remote capacity-controlled battery discharge system, providing feedback on the status of each switch. Each of the two switch control and feedback units comprises a processor, a switch, a power supply, an input / output interface circuit, and nine signal relays. Each signal relay forms a control circuit with a DC circuit breaker and a DC contactor, controlling the opening and closing of the DC circuit breaker or DC contactor to achieve malfunction prevention and self-checking redundancy. This invention effectively ensures the correct operation of the DC circuit breakers and DC contactors in the remote capacity-controlled battery discharge system, preventing switch malfunctions during normal operation and ensuring the safe and reliable operation of the DC system.

Description

Technical Field

[0001] This invention relates to the field of remote capacity discharge technology for DC system batteries, and particularly to a device for preventing malfunctions and providing self-test redundancy for remote capacity discharge equipment for batteries. Background Technology

[0002] According to section 7.4.1 of the industry standard DL / T724-2021 "Technical Regulations for Operation and Maintenance of DC Power Supply Devices for Storage Batteries in Power Systems," "If, after three full-capacity verification discharges, the capacity of the battery pack does not reach more than 80% of its rated capacity, it can be considered that the service life of this valve-regulated storage battery has expired, and safety measures should be taken and it should be replaced in a timely manner." The verification discharge cycle for valve-regulated storage batteries is as follows: newly installed or overhauled valve-regulated storage battery packs should undergo a full-capacity verification discharge test; thereafter, a verification test should be conducted every two years; and valve-regulated storage batteries that have been in operation for more than four years should undergo a full-capacity verification discharge test annually.

[0003] Taking a municipal power supply bureau as an example, there are typically dozens of 110kV and 220kV substations. A single battery set in a 110kV substation requires 2-3 days for capacity verification, while two sets of batteries in a 220kV substation require 5 days. Manually conducting battery verification tests is time-consuming and labor-intensive; therefore, remote capacity verification technology for DC system batteries is becoming increasingly necessary.

[0004] The remote capacity discharge equipment for DC system batteries adds a remotely operable DC circuit breaker between the DC power supply and the battery bank in the DC system. This allows the battery bank to automatically disconnect from the DC system for capacity discharge. During normal operation of the DC system, the DC circuit breaker is closed, and the DC system maintains its inherent charging and discharging mode. When battery discharge is required, the DC circuit breaker opens, and the remote capacity discharge equipment operates its DC contactor to connect the battery bank requiring online discharge to the inverter discharge device, forming a discharge circuit. After discharge, the charging equipment charges the battery bank. Once charging is complete, the DC contactor opens, disconnecting the discharge circuit. The DC circuit breaker is then closed, and the DC system resumes normal float charging of the battery bank, restoring its inherent connection mode. Throughout the charging and discharging process, the backup battery maintains uninterrupted discharge capability to the DC system, ensuring the reliability of the DC system operation.

[0005] While adding remote battery capacity discharge equipment to the DC system does solve the problem of time-consuming and labor-intensive on-site capacity discharge, it also increases the risk of malfunctioning electric switches due to the added remote electric operating mechanism. In practical applications, there have been instances where a malfunction in the module controlling the electric operating mechanism during normal operation of the DC system has caused the battery pack to disconnect from the bus without warning, resulting in an accident. Summary of the Invention

[0006] To address the potential for malfunctions or risks associated with the switches in existing remote capacity discharge devices for batteries in DC systems, this invention provides a redundancy and self-testing device for preventing malfunctions in remote capacity discharge devices for batteries. This device adds redundancy and self-testing functions to the control switches during actual operation to prevent malfunctions during normal operation.

[0007] To address the aforementioned technical problems, embodiments of the present invention provide the following solutions:

[0008] A redundancy device for preventing malfunctions and self-testing of a remote capacity discharge device for a storage battery, the device comprising one input interface circuit and two switch control and feedback units;

[0009] The input interface circuit connects the three DC circuit breakers QF1, QF2, and QF3 of the main circuit of the remote capacity discharge equipment for the battery and the three DC contactors KM1, KM2, and KM3 of the discharge circuit, and is used to provide feedback on the switching status of the three DC circuit breakers and the three DC contactors.

[0010] The two switch control and feedback units are a first switch control and feedback unit and a second switch control and feedback unit; the first switch control and feedback unit includes a first processor, a first switch, a first power supply, a first input / output interface circuit and nine signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15 and KS17;

[0011] The second switch control and feedback unit includes a second processor, a second switch, a second power supply, a second input / output interface circuit, and nine signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18.

[0012] Specifically, signal relays KS1, KS2, KS3, and KS4 form a control circuit with the control coil of DC circuit breaker QF1; signal relays KS5, KS6, KS7, and KS8 form a control circuit with the control coil of DC circuit breaker QF2; signal relays KS9, KS10, KS11, and KS12 form a control circuit with the control coil of DC circuit breaker QF3; signal relays KS13 and KS14 form a control circuit with the control coil of DC contactor KM1; signal relays KS15 and KS16 form a control circuit with the control coil of DC contactor KM2; and signal relays KS17 and KS18 form a control circuit with the control coil of DC contactor KM3. The signal relays in each control circuit cooperate with each other to control the opening and closing of the DC circuit breaker or DC contactor, realizing the functions of preventing malfunction and self-checking redundancy.

[0013] Preferably, in the first switch control and feedback unit, the first switch provides a power switch for the first switch control and feedback unit; the first power supply provides power to the first switch control and feedback unit; the first processor controls the opening and closing of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15 and KS17 through the first input / output interface circuit, and monitors the status feedback of each signal relay;

[0014] In the second switch control and feedback unit, the second switch provides a power switch for the second switch control and feedback unit; the second power supply provides power to the second switch control and feedback unit; the second processor controls the opening and closing of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16 and KS18 through the second input / output interface circuit, and monitors the status feedback of each signal relay.

[0015] Preferably, the DC circuit breaker QF1 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF1 to supply power to the DC circuit breaker QF1. The DC circuit breaker QF1 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF1 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF1 to open the switch. Signal relays KS1 and KS2 are connected in series between S1 and S4, and signal relays KS3 and KS4 are connected in parallel between S1 and S2.

[0016] When the DC system is operating normally, the DC circuit breaker QF1 is in the closed state. If it opens on its own, it is a false trip. Only when signal relays KS1 and KS2 are closed simultaneously can the DC circuit breaker QF1 be opened. The closing of either signal relay KS3 or KS4 can control the DC circuit breaker QF1 to close. Thus, when the DC circuit breaker QF1 is closed, a redundant function to prevent false tripping is achieved.

[0017] When the DC circuit breaker QF1 is closed, signal relay KS3 closes first and then opens. Feedback allows for self-checking of KS3's operation without triggering the operation of the DC circuit breaker QF1. Signal relay KS4 performs the same self-check as KS3. When the DC circuit breaker QF1 is closed, signal relay KS1 closes first and then opens. Feedback allows for self-checking of KS1's operation. Since signal relay KS2 is in the open state, it does not trigger the operation of the DC circuit breaker QF1. Signal relay KS2 performs the same self-check as KS3, thus achieving self-checking redundancy for signal relays KS1, KS2, KS3, and KS4.

[0018] Preferably, the DC circuit breaker QF2 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF2 to supply power to the DC circuit breaker QF2. The DC circuit breaker QF2 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF2 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF2 to open the switch. Signal relays KS5 and KS6 are connected in series between S1 and S4, and signal relays KS7 and KS8 are connected in parallel between S1 and S2.

[0019] When the DC system is operating normally, the DC circuit breaker QF2 is in the closed state. If it opens on its own, it is a false trip. Only when signal relays KS5 and KS6 are closed simultaneously can the DC circuit breaker QF2 be opened. The closing of either signal relay KS7 or KS8 can control the DC circuit breaker QF2 to close. Thus, when the DC circuit breaker QF2 is closed, a redundant function to prevent false tripping is achieved.

[0020] When the DC circuit breaker QF2 is closed, signal relay KS7 closes first and then opens. Feedback allows for self-checking of KS7's operation without triggering the operation of the DC circuit breaker QF2. Signal relay KS8 performs the same self-check as KS7. When the DC circuit breaker QF2 is closed, signal relay KS5 closes first and then opens. Feedback allows for self-checking of KS5's operation. Since signal relay KS6 is in the open state, it does not trigger the operation of the DC circuit breaker QF2. Signal relay KS6 performs the same self-check as KS5, thus achieving self-checking redundancy for signal relays KS5, KS6, KS7, and KS8.

[0021] Preferably, the DC circuit breaker QF3 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF3 to supply power to the DC circuit breaker QF3. The DC circuit breaker QF3 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF3 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF3 to open the switch. Signal relays KS9 and KS10 are connected in parallel between S1 and S4, and signal relays KS11 and KS12 are connected in series between S1 and S2.

[0022] When the DC system is operating normally, the DC circuit breaker QF3 is in the open state. If it closes on its own, it is a false operation. Only when signal relays KS11 and KS12 are closed simultaneously can the DC circuit breaker QF3 be controlled to close. The closing of either signal relay KS9 or KS10 can control the DC circuit breaker QF3 to open. Thus, when the DC circuit breaker QF3 is in the open state, a redundant function to prevent false closing is achieved.

[0023] When the DC circuit breaker QF3 is open, signal relay KS9 closes first and then opens. Feedback allows for self-checking of KS9's operation without triggering the operation of the DC circuit breaker QF3. Signal relay KS10 performs the same self-check as KS9. When the DC circuit breaker QF3 is open, signal relay KS11 closes first and then opens. Feedback allows for self-checking of KS11's operation. Since signal relay KS12 is in the open state, it does not trigger the operation of the DC circuit breaker QF3. Signal relay KS12 performs the same self-check as KS11.

[0024] Preferably, the DC contactor KM1 is a DC contactor with a remote electric operating mechanism, and signal relays KS13 and KS14 are connected in series between the control coils of the DC contactor KM1;

[0025] When the DC system is running normally, the DC contactor KM1 is in the open state. If it closes on its own, it is a false operation. Only when the signal relays KS13 and KS14 are closed simultaneously can the DC contactor KM1 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM1 is in the open state.

[0026] When DC contactor KM1 is in the open state, signal relay KS13 closes first and then opens. The feedback can self-check the operation of KS13. Since signal relay KS14 is in the open state, it does not cause DC contactor KM1 to operate. The self-check of signal relay KS14 is the same as that of KS13.

[0027] Preferably, the DC contactor KM2 is a DC contactor with a remote electric operating mechanism, and signal relays KS15 and KS16 are connected in series between the control coils of the DC contactor KM2;

[0028] When the DC system is running normally, the DC contactor KM2 is in the open state. If it closes on its own, it is a false operation. Only when signal relays KS15 and KS16 are closed simultaneously can the DC contactor KM2 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM2 is in the open state.

[0029] When DC contactor KM2 is in the open state, signal relay KS15 closes first and then opens. The feedback can self-check the operation of KS15. Since signal relay KS16 is in the open state, it does not cause DC contactor KM2 to operate. The self-check of signal relay KS16 is the same as that of KS15.

[0030] Preferably, the DC contactor KM3 is a DC contactor with a remote electric operating mechanism, and signal relays KS17 and KS18 are connected in series between the control coils of the DC contactor KM3;

[0031] When the DC system is running normally, the DC contactor KM3 is in the open state. If it closes on its own, it is a false operation. Only when the signal relays KS17 and KS18 are closed simultaneously can the DC contactor KM3 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM3 is in the open state.

[0032] When DC contactor KM3 is in the open state, signal relay KS17 closes first and then opens. The feedback can self-check the operation of KS17. Since signal relay KS18 is in the open state, it does not cause DC contactor KM3 to operate. The self-check of signal relay KS18 is the same as that of KS17.

[0033] Preferably, the first power supply not only supplies power to each DC circuit breaker and each DC contactor, but also supplies power to the first processor and signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17; the first processor controls the opening and closing of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17 through the first input / output interface circuit, and simultaneously monitors the feedback signal of another set of contacts of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17;

[0034] The second power supply provides power to the second processor and signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18. The second processor controls the opening and closing of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18 through the second input / output interface circuit, and simultaneously monitors the feedback signal of another set of contacts of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18.

[0035] Preferably, the first processor, the second processor, and the QF1 feedback, QF2 feedback, QF3 feedback, KM1 feedback, KM2 feedback, and KM3 feedback of the input interface circuit are connected to the central processing unit of the previous level.

[0036] The first processor and the second processor communicate with the central processing unit via serial ports; each feedback signal is connected to the GPIO interface of the central processing unit through the open input interface circuit; the central processing unit is powered by a third switch and a third power supply, and is connected to the local screen and background software through a communication circuit.

[0037] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following:

[0038] The anti-maloperation and self-test redundancy device provided by this invention can effectively ensure the correct operation of DC circuit breakers and DC contactors in remote capacity-controlled battery discharge equipment, preventing maloperation of switches during normal operation of the DC system, and especially preventing the battery pack from disconnecting from the bus due to maloperation of the DC circuit breaker. The anti-maloperation and self-test redundancy device ensures the remote capacity-controlled discharge function of the remote capacity-controlled battery discharge equipment and also ensures the safe and reliable operation of the DC system for DC loads. This anti-maloperation and self-test redundancy device provides strong safety assurance for the installation and mass promotion of remote capacity-controlled discharge equipment on DC system batteries. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is an installation diagram of the anti-malfunction and self-test redundancy device provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the power supply, control, and feedback wiring of the DC circuit breaker QF1 provided in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the power supply, control, and feedback wiring of the DC circuit breaker QF2 provided in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the power supply, control, and feedback wiring of the DC circuit breaker QF3 provided in an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of the power supply, control, and feedback wiring of the DC contactor KM1 provided in an embodiment of the present invention;

[0045] Figure 6 This is a schematic diagram of the power supply, control, and feedback wiring of the DC contactor KM2 provided in an embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the power supply, control, and feedback wiring of the DC contactor KM3 provided in an embodiment of the present invention;

[0047] Figure 8 This is a schematic diagram of the structure of the first switch control and feedback unit provided in an embodiment of the present invention;

[0048] Figure 9This is a schematic diagram of the structure of the second switch control and feedback unit provided in an embodiment of the present invention;

[0049] Figure 10 This is a wiring diagram of the anti-malfunction and self-test redundancy device provided in this embodiment of the invention and the upper-level central processing unit.

[0050] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the protection scope of the present invention. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] like Figure 1 As shown, a 110kV substation typically has one DC power supply panel with one battery bank; a 220kV substation typically has one DC power supply panel with one battery bank, and another DC power supply panel with another battery bank. The output bus of the DC power supply panel supplies power to the DC loads and is also connected to the battery bank through a fuse.

[0053] The basic modification to add a remote capacity discharge device for batteries involves disconnecting the DC bus from the battery pack. A DC circuit breaker (with a remote electric operating mechanism) is then added between the DC bus and the battery pack. This remote electric operating mechanism controls the opening and closing of the DC circuit breaker, enabling the battery pack to connect to or disconnect from the DC bus. A DC contactor (with a remote electric operating mechanism) is added between the battery pack and the discharge module. This allows the battery pack to connect to the discharge module after disconnecting from the bus, thus enabling the battery pack's capacity discharge function.

[0054] Figure 1 A DC circuit breaker QF1 is added between the DC bus of DC power supply panel 1 and battery pack 1; a DC circuit breaker QF2 is added between the DC bus of DC power supply panel 2 and battery pack 2. A DC contactor (i.e., discharge switch) KM1 is added to battery pack 1; a DC contactor KM2 is added to battery pack 2, and a common DC contactor KM3 is also added.

[0055] A DC circuit breaker QF3 is added between the two busbars. Under normal operating conditions, QF3 is in the open state. Only in special circumstances, such as during or at the end of discharge, when the mains power fails, will the already discharged battery pack have insufficient capacity. In this case, the equipment will automatically close the DC circuit breaker QF3, allowing the battery pack with sufficient capacity to supply power to the DC loads of the two busbars first. When the battery pack with sufficient capacity discharges to the same total voltage as the battery pack with insufficient capacity, the two battery packs will jointly supply power to the DC loads of the two busbars. After the mains power is restored, the equipment will automatically disconnect QF3.

[0056] To enable remote capacity discharge of the battery, the added DC circuit breakers QF1, QF2, and QF3, and DC contactors KM1, KM2, and KM3, all have remote electric operation capabilities. These require control via an output interface from a central processing unit, and also require input interfaces to provide feedback on the switch status. When all equipment is functioning normally, QF1 and QF2 are closed, QF3 is open, and KM1, KM2, and KM3 are disconnected. The DC system maintains its original charging and discharging mode. However, in the event of equipment failure, damage to the input / output interfaces, or other reasons causing malfunctions in the output interfaces, the battery pack may disconnect from the bus. If this coincides with a power outage, the system will lose power, leading to a loss of power to the DC system bus and potentially causing an accident.

[0057] To address the aforementioned problems, embodiments of the present invention provide a device for preventing malfunctions and providing self-test redundancy in a remote capacity discharge device for batteries. Referring to the following figures, Figure 1 This is a schematic diagram of the installation of the anti-malfunction and self-test redundancy device. Figure 2 , Figure 3 , Figure 4 These are the power supply, control, and feedback wiring diagrams for DC circuit breakers QF1, QF2, and QF3. Figure 5 , Figure 6 , Figure 7 These are the power supply, control, and feedback wiring diagrams for DC contactors KM1, KM2, and KM3. Figure 8 and Figure 9 These are schematic diagrams of the first switch control and feedback unit and the second switch control and feedback unit in the device. Figure 10 This is a wiring diagram of the anti-malfunction and self-test redundancy device and the upper-level central processing unit.

[0058] The anti-malfunction and self-test redundancy device includes one input interface circuit and two switch control and feedback units;

[0059] The input interface circuit connects the three DC circuit breakers QF1, QF2, and QF3 of the main circuit of the remote capacity discharge equipment for the battery and the three DC contactors KM1, KM2, and KM3 of the discharge circuit, and is used to provide feedback on the switching status of the three DC circuit breakers and the three DC contactors.

[0060] Each of the two switch control and feedback units comprises a processor, a switch, a power supply, an input / output interface circuit, and nine signal relays; here, the two switch control and feedback units are the first switch control and feedback unit and the second switch control and feedback unit, respectively.

[0061] The first switch control and feedback unit includes a first processor, a first switch, a first power supply, a first input / output interface circuit, and nine signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17.

[0062] The second switch control and feedback unit includes a second processor, a second switch, a second power supply, a second input / output interface circuit, and nine signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18.

[0063] Specifically, signal relays KS1, KS2, KS3, and KS4 form a control circuit with the control coil of DC circuit breaker QF1; signal relays KS5, KS6, KS7, and KS8 form a control circuit with the control coil of DC circuit breaker QF2; signal relays KS9, KS10, KS11, and KS12 form a control circuit with the control coil of DC circuit breaker QF3; signal relays KS13 and KS14 form a control circuit with the control coil of DC contactor KM1; signal relays KS15 and KS16 form a control circuit with the control coil of DC contactor KM2; and signal relays KS17 and KS18 form a control circuit with the control coil of DC contactor KM3. The signal relays in each control circuit cooperate with each other to control the opening and closing of the DC circuit breaker or DC contactor, realizing the functions of preventing malfunction and self-checking redundancy.

[0064] This invention adds redundant devices for preventing malfunctions and self-testing, preventing the electric operating switch from malfunctioning under abnormal conditions, and adding double insurance for the safety of the DC system.

[0065] Furthermore, in the first switch control and feedback unit, the first switch provides a power switch for the first switch control and feedback unit; the first power supply provides power to the first switch control and feedback unit; the first processor controls the opening and closing of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15 and KS17 through the first input / output interface circuit, and monitors the status feedback of each signal relay;

[0066] In the second switch control and feedback unit, the second switch provides a power switch for the second switch control and feedback unit; the second power supply provides power to the second switch control and feedback unit; the second processor controls the opening and closing of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16 and KS18 through the second input / output interface circuit, and monitors the status feedback of each signal relay.

[0067] like Figure 2 As shown, the DC circuit breaker QF1 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminals (P1 and P2) of the DC circuit breaker QF1 to supply power to the DC circuit breaker QF1. The DC circuit breaker QF1 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF1 to close the switch (i.e., "close"). When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF1 to open the switch (i.e., "open"). Signal relays KS1 and KS2 are connected in series between S1 and S4, and signal relays KS3 and KS4 are connected in parallel between S1 and S2.

[0068] When the DC system is operating normally, the DC circuit breaker QF1 is in the closed state. If it opens on its own, it is a false trip. Only when signal relays KS1 and KS2 are closed simultaneously can the DC circuit breaker QF1 be opened. The closing of either signal relay KS3 or KS4 can control the DC circuit breaker QF1 to close. Thus, when the DC circuit breaker QF1 is closed, a redundant function to prevent false tripping is achieved.

[0069] In other words, under normal conditions, QF1 is closed. Even if KS1 malfunctions, it will not cause QF1 to automatically disconnect; similarly, even if KS2 malfunctions, it will not cause QF1 to automatically disconnect. When QF1 is already open and needs to be closed, if KS3 fails, QF1 can be closed by operating KS4; even if KS4 fails, QF1 can be closed by operating KS3. This is the redundancy function to prevent misoperation.

[0070] Furthermore, a pre-test function for the signal relays can be implemented before the discharge begins. With the DC circuit breaker QF1 closed, signal relay KS3 closes first and then opens. Feedback enables self-testing of KS3's operation without triggering the operation of the DC circuit breaker QF1. Signal relay KS4 performs the same self-test as KS3. With the DC circuit breaker QF1 closed, signal relay KS1 closes first and then opens. Feedback enables self-testing of KS1's operation. Since signal relay KS2 is in the open state, it does not trigger the operation of the DC circuit breaker QF1. Signal relay KS2 performs the same self-test as KS3, thus achieving self-testing redundancy for signal relays KS1, KS2, KS3, and KS4.

[0071] Specifically, the DC system is currently in normal operating condition and requires remote capacity discharge of the battery pack. At this time, QF1 is in the closed state. Closing KS3 causes QF1 to close. Since QF1 was already in the closed state, closing KS3 will not cause QF1 to activate. At this time, through the feedback of KS3, it can be seen that the self-test function of KS3 changing from normally open to normally closed is correct. When KS3 is opened, QF1 is still in the closed state and will not activate. Through the feedback of KS3, it can be seen that the self-test function of KS3 changing from normally closed to normally open is correct. The self-test function of KS4 is the same as that of KS3. When KS1 is closed again, since KS2 is open, closing KS1 will not cause QF1 to close. At this point, feedback from KS1 confirms that its self-test function of changing from normally open to normally closed is working correctly. When KS1 is opened again, QF1 remains closed and will not activate. Again, feedback from KS1 confirms that its self-test function of changing from normally closed to normally open is working correctly. The self-test functions of KS2 and KS1 are the same. Therefore, with QF1 closed, all self-test functions of the device (KS1, KS2, KS3, and KS4) are achieved.

[0072] like Figure 3 As shown, the DC circuit breaker QF2 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF2 to supply power to the DC circuit breaker QF2. The DC circuit breaker QF2 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF2 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF2 to open the switch. Signal relays KS5 and KS6 are connected in series between S1 and S4, and signal relays KS7 and KS8 are connected in parallel between S1 and S2.

[0073] When the DC system is operating normally, the DC circuit breaker QF2 is in the closed state. If it opens on its own, it is a false trip. Only when signal relays KS5 and KS6 are closed simultaneously can the DC circuit breaker QF2 be opened. The closing of either signal relay KS7 or KS8 can control the DC circuit breaker QF2 to close. Thus, when the DC circuit breaker QF2 is closed, a redundant function to prevent false tripping is achieved.

[0074] When the DC circuit breaker QF2 is closed, signal relay KS7 closes first and then opens. Feedback allows for self-checking of KS7's operation without triggering the operation of the DC circuit breaker QF2. Signal relay KS8 performs the same self-check as KS7. When the DC circuit breaker QF2 is closed, signal relay KS5 closes first and then opens. Feedback allows for self-checking of KS5's operation. Since signal relay KS6 is in the open state, it does not trigger the operation of the DC circuit breaker QF2. Signal relay KS6 performs the same self-check as KS5, thus achieving self-checking redundancy for signal relays KS5, KS6, KS7, and KS8.

[0075] The control and feedback of QF2 are the same as those of QF1, and it also implements redundant functions for preventing malfunctions and self-testing.

[0076] like Figure 4 As shown, the DC circuit breaker QF3 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF3 to supply power to the DC circuit breaker QF3. The DC circuit breaker QF3 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF3 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF3 to open the switch. Signal relays KS9 and KS10 are connected in parallel between S1 and S4, and signal relays KS11 and KS12 are connected in series between S1 and S2.

[0077] When the DC system is operating normally, the DC circuit breaker QF3 is in the open state. If it closes on its own, it is a false operation. Only when signal relays KS11 and KS12 are closed simultaneously can the DC circuit breaker QF3 be controlled to close. The closing of either signal relay KS9 or KS10 can control the DC circuit breaker QF3 to open. Thus, when the DC circuit breaker QF3 is in the open state, a redundant function to prevent false closing is achieved.

[0078] When the DC circuit breaker QF3 is open, signal relay KS9 closes first and then opens. Feedback allows for self-checking of KS9's operation without triggering the operation of the DC circuit breaker QF3. Signal relay KS10 performs the same self-check as KS9. When the DC circuit breaker QF3 is open, signal relay KS11 closes first and then opens. Feedback allows for self-checking of KS11's operation. Since signal relay KS12 is in the open state, it does not trigger the operation of the DC circuit breaker QF3. Signal relay KS12 performs the same self-check as KS11.

[0079] The control and feedback of QF3 are similar to those of QF1 and QF2, and it also implements redundant functions for preventing malfunctions and self-testing.

[0080] like Figure 5 As shown, the DC contactor KM1 is a DC contactor with a remote electric operating mechanism, and signal relays KS13 and KS14 are connected in series between the control coils of the DC contactor KM1.

[0081] When the DC system is running normally, the DC contactor KM1 is in the open state. If it closes on its own, it is a false operation. Only when the signal relays KS13 and KS14 are closed simultaneously can the DC contactor KM1 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM1 is in the open state.

[0082] When DC contactor KM1 is in the open state, signal relay KS13 closes first and then opens. The feedback can self-check the operation of KS13. Since signal relay KS14 is in the open state, it does not cause DC contactor KM1 to operate. The self-check of signal relay KS14 is the same as that of KS13.

[0083] like Figure 6 As shown, the DC contactor KM2 is a DC contactor with a remote electric operating mechanism, and signal relays KS15 and KS16 are connected in series between the control coils of the DC contactor KM2.

[0084] When the DC system is running normally, the DC contactor KM2 is in the open state. If it closes on its own, it is a false operation. Only when signal relays KS15 and KS16 are closed simultaneously can the DC contactor KM2 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM2 is in the open state.

[0085] When DC contactor KM2 is in the open state, signal relay KS15 closes first and then opens. The feedback can self-check the operation of KS15. Since signal relay KS16 is in the open state, it does not cause DC contactor KM2 to operate. The self-check of signal relay KS16 is the same as that of KS15.

[0086] like Figure 7As shown, the DC contactor KM3 is a DC contactor with a remote electric operating mechanism, and signal relays KS17 and KS18 are connected in series between the control coils of the DC contactor KM3.

[0087] When the DC system is running normally, the DC contactor KM3 is in the open state. If it closes on its own, it is a false operation. Only when the signal relays KS17 and KS18 are closed simultaneously can the DC contactor KM3 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM3 is in the open state.

[0088] When DC contactor KM3 is in the open state, signal relay KS17 closes first and then opens. The feedback can self-check the operation of KS17. Since signal relay KS18 is in the open state, it does not cause DC contactor KM3 to operate. The self-check of signal relay KS18 is the same as that of KS17.

[0089] Furthermore, Figure 8 and Figure 9 These are schematic diagrams of the first and second switch control and feedback units, respectively. The first power supply not only powers each DC circuit breaker and each DC contactor, but also powers the first processor and signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17. The first processor controls the opening and closing of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17 through the first input / output interface circuit, while simultaneously monitoring the feedback signals from another set of contacts of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17.

[0090] The second power supply provides power to the second processor and signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18. The second processor controls the opening and closing of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18 through the second input / output interface circuit, and simultaneously monitors the feedback signal of another set of contacts of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18.

[0091] The control and feedback of the signal relays with odd and even serial numbers are powered by different switches and power supplies, which is also based on redundancy considerations to prevent malfunctions.

[0092] Furthermore, such as Figure 10As shown, the first processor, the second processor, and the QF1 feedback, QF2 feedback, QF3 feedback, KM1 feedback, KM2 feedback, and KM3 feedback of the input interface circuit are connected to the central processing unit of the previous level.

[0093] The first processor and the second processor communicate with the central processing unit via serial ports; each feedback signal is connected to the GPIO interface of the central processing unit through the open input interface circuit; the central processing unit is powered by a third switch and a third power supply, and is connected to the local screen and background software through a communication circuit.

[0094] When capacity discharge is required, an application for approval can be submitted through the backend software or local screen. After approval, the discharge can be initiated by clicking the discharge button through the backend software or local screen. The central processing unit can only start the discharge status detection, switch self-test, and equipment self-test operations after receiving both the approval command and the discharge command. Discharge will begin once the discharge conditions are met.

[0095] In actual field operation, the battery pack is subjected to a verification test every 2 years for the full capacity discharge cycle. Valve-regulated batteries that have been in operation for more than 4 years should be subjected to a full verification discharge test every year. Therefore, the switch does not operate during normal operation, and only needs to operate during full capacity discharge.

[0096] If it is a manned DC system, this device can disconnect the first switch (first power switch) and the second switch (second power switch), leaving only the third switch (third power switch) open. That is, it can only retain the monitoring function of the battery pack and system data and status of the nuclear capacity discharge equipment. The first switch and the second switch are closed only when nuclear capacity discharge is required to perform the nuclear capacity discharge operation.

[0097] In unattended DC systems, during normal operation, closing the first and second switches, along with anti-maloperation and self-test redundancy devices, effectively ensures the correct operation of the DC circuit breakers and DC contactors. This prevents maloperation of switches during normal operation, particularly the risk of the battery pack disconnecting from the bus due to a maloperation of the DC circuit breaker. The anti-maloperation and self-test redundancy devices also ensure the safety of remote capacity discharge equipment and the safe and reliable operation of the DC system for DC loads.

[0098] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0099] The use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0100] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0101] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0102] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A redundancy device for preventing malfunctions and self-testing in a remote capacity discharge device for a storage battery, characterized in that, The device includes one input interface circuit and two switch control and feedback units; The input interface circuit connects the three DC circuit breakers QF1, QF2, and QF3 of the main circuit of the remote capacity discharge equipment for the battery and the three DC contactors KM1, KM2, and KM3 of the discharge circuit, and is used to provide feedback on the switching status of the three DC circuit breakers and the three DC contactors. The two switch control and feedback units are a first switch control and feedback unit and a second switch control and feedback unit; the first switch control and feedback unit includes a first processor, a first switch, a first power supply, a first input / output interface circuit and nine signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15 and KS17; The second switch control and feedback unit includes a second processor, a second switch, a second power supply, a second input / output interface circuit, and nine signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18. Specifically, signal relays KS1, KS2, KS3, and KS4 form a control circuit with the control coil of DC circuit breaker QF1; signal relays KS5, KS6, KS7, and KS8 form a control circuit with the control coil of DC circuit breaker QF2; signal relays KS9, KS10, KS11, and KS12 form a control circuit with the control coil of DC circuit breaker QF3; signal relays KS13 and KS14 form a control circuit with the control coil of DC contactor KM1; signal relays KS15 and KS16 form a control circuit with the control coil of DC contactor KM2; and signal relays KS17 and KS18 form a control circuit with the control coil of DC contactor KM3. The signal relays in each control circuit cooperate with each other to control the opening and closing of the DC circuit breaker or DC contactor, realizing the functions of preventing malfunction and self-checking redundancy.

2. The anti-maloperation and self-test redundancy device for remote capacity discharge equipment of batteries according to claim 1, characterized in that, In the first switch control and feedback unit, the first switch provides a power switch for the first switch control and feedback unit; the first power supply provides power to the first switch control and feedback unit; the first processor controls the opening and closing of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15 and KS17 through the first input and output interface circuit, and monitors the status feedback of each signal relay; In the second switch control and feedback unit, the second switch provides a power switch for the second switch control and feedback unit; the second power supply provides power to the second switch control and feedback unit; the second processor controls the opening and closing of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16 and KS18 through the second input / output interface circuit, and monitors the status feedback of each signal relay.

3. The anti-maloperation and self-test redundancy device for the remote capacity discharge equipment for batteries according to claim 1, characterized in that, The DC circuit breaker QF1 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF1 to supply power to the DC circuit breaker QF1. The DC circuit breaker QF1 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF1 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF1 to open the switch. Signal relays KS1 and KS2 are connected in series between S1 and S4, and signal relays KS3 and KS4 are connected in parallel between S1 and S2. When the DC system is operating normally, the DC circuit breaker QF1 is in the closed state. If it opens on its own, it is a false trip. Only when signal relays KS1 and KS2 are closed simultaneously can the DC circuit breaker QF1 be opened. The closing of either signal relay KS3 or KS4 can control the DC circuit breaker QF1 to close. Thus, when the DC circuit breaker QF1 is closed, a redundant function to prevent false tripping is achieved. When the DC circuit breaker QF1 is closed, signal relay KS3 closes first and then opens. Feedback allows for self-checking of KS3's operation without triggering the operation of the DC circuit breaker QF1. Signal relay KS4 performs the same self-check as KS3. When the DC circuit breaker QF1 is closed, signal relay KS1 closes first and then opens. Feedback allows for self-checking of KS1's operation. Since signal relay KS2 is in the open state, it does not trigger the operation of the DC circuit breaker QF1. Signal relay KS2 performs the same self-check as KS3, thus achieving self-checking redundancy for signal relays KS1, KS2, KS3, and KS4.

4. The anti-maloperation and self-test redundancy device for the remote capacity discharge equipment for batteries according to claim 1, characterized in that, The DC circuit breaker QF2 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF2 to supply power to the DC circuit breaker QF2. The DC circuit breaker QF2 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF2 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF2 to open the switch. Signal relays KS5 and KS6 are connected in series between S1 and S4, and signal relays KS7 and KS8 are connected in parallel between S1 and S2. When the DC system is operating normally, the DC circuit breaker QF2 is in the closed state. If it opens on its own, it is a false trip. Only when signal relays KS5 and KS6 are closed simultaneously can the DC circuit breaker QF2 be opened. The closing of either signal relay KS7 or KS8 can control the DC circuit breaker QF2 to close. Thus, when the DC circuit breaker QF2 is closed, a redundant function to prevent false tripping is achieved. When the DC circuit breaker QF2 is closed, signal relay KS7 closes first and then opens. Feedback allows for self-checking of KS7's operation without triggering the operation of the DC circuit breaker QF2. Signal relay KS8 performs the same self-check as KS7. When the DC circuit breaker QF2 is closed, signal relay KS5 closes first and then opens. Feedback allows for self-checking of KS5's operation. Since signal relay KS6 is in the open state, it does not trigger the operation of the DC circuit breaker QF2. Signal relay KS6 performs the same self-check as KS5, thus achieving self-checking redundancy for signal relays KS5, KS6, KS7, and KS8.

5. The anti-maloperation and self-test redundancy device for the remote capacity discharge equipment for batteries according to claim 1, characterized in that, The DC circuit breaker QF3 is a DC circuit breaker with a remote electric operating mechanism. The first power supply is connected to the power input terminal of the DC circuit breaker QF3 to supply power to the DC circuit breaker QF3. The DC circuit breaker QF3 includes a common terminal S1 and moving terminals S2 and S4. When S1 and S2 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF3 to close the switch. When S1 and S4 are shorted for 1 second, the remote electric operating mechanism operates the DC circuit breaker QF3 to open the switch. Signal relays KS9 and KS10 are connected in parallel between S1 and S4, and signal relays KS11 and KS12 are connected in series between S1 and S2. When the DC system is operating normally, the DC circuit breaker QF3 is in the open state. If it closes on its own, it is a malfunction. Only when signal relays KS11 and KS12 are closed simultaneously can the DC circuit breaker QF3 be controlled to close. The closing of either signal relay KS9 or KS10 can control the DC circuit breaker QF3 to open; thus, when the DC circuit breaker QF3 is in the open state, a redundant function to prevent accidental closing is achieved. When the DC circuit breaker QF3 is open, signal relay KS9 closes first and then opens. Feedback allows for self-checking of KS9's operation without triggering the operation of the DC circuit breaker QF3. Signal relay KS10 performs the same self-check as KS9. When the DC circuit breaker QF3 is open, signal relay KS11 closes first and then opens. Feedback allows for self-checking of KS11's operation. Since signal relay KS12 is in the open state, it does not trigger the operation of the DC circuit breaker QF3. Signal relay KS12 performs the same self-check as KS11.

6. The anti-maloperation and self-test redundancy device for the remote capacity discharge equipment for batteries according to claim 1, characterized in that, The DC contactor KM1 is a DC contactor with a remote electric operating mechanism, and signal relays KS13 and KS14 are connected in series between the control coils of the DC contactor KM1. When the DC system is operating normally, the DC contactor KM1 is in the open state. If it closes on its own, it is a false operation. Only when signal relays KS13 and KS14 are closed simultaneously can the DC contactor KM1 be controlled to close. This provides a redundant function to prevent accidental closure when the DC contactor KM1 is in the open state. When DC contactor KM1 is in the open state, signal relay KS13 closes first and then opens. The feedback can self-check the operation of KS13. Since signal relay KS14 is in the open state, it does not cause DC contactor KM1 to operate. The self-check of signal relay KS14 is the same as that of KS13.

7. The anti-maloperation and self-test redundancy device for the remote capacity discharge equipment for batteries according to claim 1, characterized in that, The DC contactor KM2 is a DC contactor with a remote electric operating mechanism, and signal relays KS15 and KS16 are connected in series between the control coils of the DC contactor KM2. When the DC system is running normally, the DC contactor KM2 is in the open state. If it closes on its own, it is a false operation. Only when signal relays KS15 and KS16 are closed simultaneously can the DC contactor KM2 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM2 is in the open state. When DC contactor KM2 is in the open state, signal relay KS15 closes first and then opens. The feedback can self-check the operation of KS15. Since signal relay KS16 is in the open state, it does not cause DC contactor KM2 to operate. The self-check of signal relay KS16 is the same as that of KS15.

8. The anti-maloperation and self-test redundancy device for the remote capacity discharge equipment for batteries according to claim 1, characterized in that, The DC contactor KM3 is a DC contactor with a remote electric operating mechanism, and signal relays KS17 and KS18 are connected in series between the control coils of the DC contactor KM3. When the DC system is running normally, the DC contactor KM3 is in the open state. If it closes on its own, it is a false operation. Only when the signal relays KS17 and KS18 are closed simultaneously can the DC contactor KM3 be controlled to close. Thus, the redundancy function of preventing false closure is achieved when the DC contactor KM3 is in the open state. When DC contactor KM3 is in the open state, signal relay KS17 closes first and then opens. The feedback can self-check the operation of KS17. Since signal relay KS18 is in the open state, it does not cause DC contactor KM3 to operate. The self-check of signal relay KS18 is the same as that of KS17.

9. The anti-maloperation and self-test redundancy device for remote capacity discharge equipment of a battery according to claim 1, characterized in that, The first power supply not only powers each DC circuit breaker and each DC contactor, but also powers the first processor and signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17. The first processor controls the opening and closing of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17 through the first input / output interface circuit, and simultaneously monitors the feedback signal of another set of contacts of signal relays KS1, KS3, KS5, KS7, KS9, KS11, KS13, KS15, and KS17. The second power supply provides power to the second processor and signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18. The second processor controls the opening and closing of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18 through the second input / output interface circuit, and simultaneously monitors the feedback signal of another set of contacts of signal relays KS2, KS4, KS6, KS8, KS10, KS12, KS14, KS16, and KS18.

10. The anti-maloperation and self-test redundancy device for remote capacity discharge equipment of a battery according to claim 1, characterized in that, The first processor, the second processor, and the QF1, QF2, QF3, KM1, KM2, and KM3 feedbacks of the input interface circuit are connected to the next higher-level central processing unit. The first processor and the second processor communicate with the central processing unit via serial ports; each feedback signal is connected to the GPIO interface of the central processing unit through the open input interface circuit; the central processing unit is powered by a third switch and a third power supply, and is connected to the local screen and background software through a communication circuit.

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