Battery active discharge equipment and its control equipment

Abstract

An active battery discharge device may include: a capacitor disposed on the vehicle side and configured to maintain the link voltage in a smooth state; a pre-charge resistor disposed on the battery side and configured to charge or discharge the capacitor disposed on the vehicle side; a main positive relay disposed on the battery side; and a pre-charge relay having a first terminal connected to a first terminal of the main positive relay and a second terminal connected to a first terminal of the pre-charge resistor.

Description

Technical Field

[0001] This disclosure relates to a battery active discharge device and its control device, and more specifically, to a device and its control device for optimizing a battery system by structurally integrating the active discharge circuit (resistor, switch) on the vehicle side into the battery side (the active discharge resistor on the vehicle side is functionally replaced by the pre-charge resistor on the battery side, and the active discharge switch is repositioned), thereby eliminating the use of the active discharge resistor as a vehicle component. Background Technology

[0002] Currently commercially available examples of rechargeable batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium-ion batteries. Among them, lithium-ion batteries have attracted attention due to their advantages of exhibiting almost no memory effect compared to nickel-based batteries, allowing for free charging and discharging, having a very low self-discharge rate, and providing high energy density.

[0003] Recently, rechargeable batteries have been widely used in vehicles such as electric motorcycles and electric vehicles, as well as in medium to large-sized equipment such as energy storage systems (ESS) for driving or energy storage. Therefore, interest in batteries has further increased, and research and development of batteries are proceeding more actively. Furthermore, for batteries used in vehicles, the commercialization and research of interchangeable conventional battery packs are being actively pursued.

[0004] Lithium-ion rechargeable batteries primarily use lithium-based oxides and carbon materials as the positive and negative electrode active materials, respectively. A lithium-ion rechargeable battery comprises electrode components and an external material (i.e., the battery casing). Within the electrode components, positive and negative electrode plates, coated with the positive and negative active materials respectively, are arranged with spacers inserted between them. The external material seals and houses the electrode components with the electrolyte solution. Based on the shape of the external material, lithium-ion rechargeable batteries can be classified into can-type batteries, where the electrode components are housed in a metal can, and bag-type batteries, where the electrode components are housed in a pouch made of aluminum laminate. Can-type batteries can be further classified into prismatic and cylindrical batteries based on their shape.

[0005] Multiple secondary batteries can be housed together inside a module housing (module casing) or a group housing (group casing) and electrically connected to each other to form a battery module or battery pack. In this case, each secondary battery included in the battery module or battery pack can be referred to as a battery cell.

[0006] To ensure the stable performance of batteries in the form of individual cells, modules, or packs, and to protect devices equipped with batteries or users, it is crucial to diagnose the battery's condition and take appropriate measures accordingly. Representative technologies include control devices such as battery management systems (BMS) in battery packs and energy storage systems (ESS) that diagnose the batteries and implement appropriate measures.

[0007] In this scenario, when a problem occurs in the battery, the main positive / negative relay inside the battery is disconnected, and the X-capacitor (X-cap) connected to the battery link voltage also needs to be discharged. This is to prevent HV voltage from being applied to vehicle components connected to the link voltage (e.g., inverters, DC-DC converters, etc.). In this case, an active discharge circuit (resistor, switch) is arranged on the vehicle side to discharge the X-cap. The need to place an active discharge resistor and an active discharge switch results in a fixed cost for the battery system application.

[0008] In other words, according to relevant technologies, the main positive / negative relay, the pre-charge relay for pre-charging, and the pre-charge resistor (R1) are arranged on the battery side. On the vehicle side, an X-cap (C1) is provided, and the active discharge switch (SW1) and the active discharge resistor (R2) are arranged to discharge the voltage generated in the X-cap when the relay is disconnected.

[0009] The related technologies described above are technical information that the inventor possessed for the purpose of conceiving this disclosure or obtained in the process of conceiving this disclosure, and are not necessarily considered to be publicly known technologies before this disclosure was submitted. Summary of the Invention

[0010] [Technical Issues]

[0011] The problem this disclosure aims to solve is to relocate resistors and switches for active discharge, which are located on the vehicle side, to the battery side, while integrating the functions with replaceable components.

[0012] [Technical Solution]

[0013] The technical solution implemented in this disclosure relates to a battery active discharge device, which may include: a capacitor arranged on the vehicle side and configured to maintain the link voltage in a smooth state, and a pre-charge resistor arranged on the battery side and configured to charge or discharge the capacitor arranged on the vehicle side.

[0014] In an embodiment, the active battery discharge device may further include: a main positive relay disposed on the battery side, and a pre-charge relay having a first end connected to a first terminal of the main positive relay and a second end connected to a first terminal of the pre-charge resistor, wherein the second terminal of the pre-charge resistor may be connected to the second terminal of the main positive relay.

[0015] In one embodiment, when the pre-charge relay is turned on, the capacitor can be charged through the pre-charge resistor.

[0016] In an embodiment, the active battery discharge device may further include: a main negative relay disposed on the battery side, and an active discharge switch having a first end connected between a second end of a precharge relay and a first end of a precharge resistor, and a second end connected to one end of the main negative relay.

[0017] In one embodiment, when the active discharge switch is turned on, the capacitor can be discharged through the pre-charge resistor.

[0018] [Beneficial Effects]

[0019] According to the technical solution disclosed above, the pre-charge resistor arranged on the battery side can replace the active discharge resistor that needs to be arranged on the vehicle side.

[0020] In addition, according to the above-disclosed technical solution, the unit cost of the battery system can be reduced by not using active discharge resistor components on the vehicle side. Attached Figure Description

[0021] Figure 1 This is a block diagram illustrating an active battery discharge device according to an embodiment of the present disclosure.

[0022] Figure 2 and Figure 3 This is a diagram illustrating operations that can be performed by a battery active discharge device according to some embodiments of the present disclosure.

[0023] Figure 4 This is a diagram illustrating a computing device that can implement devices and / or systems according to various embodiments of the present disclosure. Detailed Implementation

[0024] In the following, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The advantages and features of the present disclosure, as well as the methods for implementing the present disclosure, will become apparent from the embodiments described in detail below and the accompanying drawings. However, the spirit of the present disclosure is not limited to the embodiments disclosed below, but can be implemented in various different forms. The embodiments are provided only to complete the spirit of the present disclosure and to allow those skilled in the art to fully understand the category of the present disclosure. The spirit of the present disclosure is limited only by the category of the claims.

[0025] It should be noted that when adding reference numerals to components in each figure, identical components should be given the same reference numerals whenever possible, even if the same components are illustrated in different figures. Furthermore, in describing this disclosure, detailed descriptions of related known configurations or functions are omitted where such detailed descriptions would obscure the essential points of the disclosure.

[0026] Unless otherwise defined, all terms used herein, including technical and scientific terms, may be used by one of ordinary skill in the art to which this disclosure pertains in their commonly understood meaning. Furthermore, unless explicitly and specifically defined, terms defined in common dictionaries should not be interpreted in an idealized or excessive sense. The terminology used herein is intended to describe embodiments and not to limit this disclosure. As used herein, singular forms are intended to include plural forms as well, unless the context clearly indicates otherwise.

[0027] In addition, terms such as first, second, A, B, (a), (b) may be used when describing the components of this disclosure. These terms are used only to distinguish a component from other components, and the nature, order, or sequence of the corresponding components is not limited by the term. When a component is described as being “connected,” “coupled,” or “linked” to another component, it should be understood that a component may be directly connected or coupled to another component, but another component may also be “connected,” “coupled,” or “linked” between components.

[0028] When used herein, terms such as “comprising,” “including,” “containing,” and / or “having” specify the presence of the stated components, steps, operations, and / or elements, but do not exclude the presence or addition of one or more other components, steps, operations, and / or elements.

[0029] Various embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0030] Furthermore, in describing the components of this disclosure, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are used only to distinguish a component from other components, and the nature, order, or sequence of the corresponding components is not limited by the term. Throughout this specification, unless explicitly stated otherwise, the terms “comprising,” “having,” and variations such as “including,” “containing,” and “covering” shall be understood to imply inclusion of the stated component but not exclusion of any other component. Additionally, as used herein, the terms “unit” and “module” refer to a unit that performs at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.

[0031] In the following, active discharge devices and methods according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0032] First, refer to Figure 1An active discharge device according to an embodiment of the present disclosure is described.

[0033] Figure 1 This is a block diagram illustrating an active battery discharge device according to an embodiment of the present disclosure.

[0034] refer to Figure 1 According to embodiments of the present disclosure, the active discharge device 100 can perform diagnostic and / or control operations on the battery 200.

[0035] Here, battery 200 can be a concept including a battery cell representing a single secondary battery, a battery cell group including multiple battery cells, a battery module, a battery pack, a battery rack, etc.

[0036] Therefore, the active discharge device 100 may include a measurement unit 110, a storage unit 120, and a control unit 130.

[0037] The measurement unit 110 can be configured to measure state information about the battery 200.

[0038] Here, the state information regarding battery 200 can include the internal and / or external states of battery 200. For example, measurement unit 110 can measure information about the internal state of battery 200, such as voltage, current, temperature, state of charge (SOC), depth of discharge (DOD), internal resistance, state of health (SOH), resting state, overvoltage or overcurrent state, and equilibrium state. For this purpose, measurement unit 110 can include various sensors, such as voltage sensors and current sensors. As another example, measurement unit 110 can measure information about the external state of battery 200, such as temperature, humidity, and smoke around battery 200. For this purpose, measurement unit 110 can include sensors, such as temperature sensors, humidity sensors, and smoke sensors. In this respect, measurement unit 110 can also be referred to as a sensor.

[0039] In this configuration, the measurement unit 110 can measure state information about the battery 200 in a one-dimensional manner using sensors, such as voltage, current, and temperature. Furthermore, the measurement unit 110 can perform two-dimensional processing on the one-dimensional information, such as calculations. For example, the measurement unit 110 can measure state information about the battery 200 by calculating or estimating its state based on state information such as voltage, current, and temperature, including parameters such as state of charge (SOC), internal resistance, remaining life (SOH), and imbalance.

[0040] The measurement unit 110 can send measurement status information about the battery 200 to the control unit 130.

[0041] Storage unit 120 may be configured to store computer-executable instructions, program code, program data, and / or other suitable forms of information for enabling each component of active discharge device 100—i.e., measurement unit 110 and / or control unit 130—to perform its functions. The program stored in storage unit 120 may include a set of instructions executable by control unit 130. In embodiments of this disclosure, storage unit 120 may be a memory (volatile memory, such as random access memory, non-volatile memory, or suitable combinations thereof), one or more disk storage devices, optical disk storage devices, flash memory devices, other forms of storage media accessible by active discharge device 100 and capable of storing desired information, or suitable combinations thereof.

[0042] In this case, the storage unit 120 can be implemented as an integrated component of the active discharge device 100, such as a component that serves as the control unit 130. For example, the storage unit 120 can be implemented as a built-in memory installed on the processor that serves as the control unit 130.

[0043] The control unit 130 can receive measured status information from the measurement unit 110. The control unit 130 can use the status information received from the measurement unit 110 to perform diagnostic and / or control operations on the battery 200.

[0044] In this scenario, the control unit 130 can send or store information generated from diagnostic and / or control operations of the battery 200 to another component. This other component may be a component included in the active discharge device 100 according to embodiments of this disclosure, or a component included in other devices external to the active discharge device 100. Specifically, when the target battery 200 is installed in a vehicle, the active discharge device 100 can send information generated from diagnostic and / or control operations of the battery 200 to a vehicle-side upper control system, such as a vehicle control unit (VCU) and an electronic control unit (ECU).

[0045] Additionally, the control unit 130 can transmit information generated from diagnostic and / or control operations of the battery 200 via various wired or wireless communication configurations or methods. For example, the control unit 130 can transmit information generated from diagnostic and / or control operations of the battery 200 to the vehicle-side control system via Controller Area Network (CAN) communication.

[0046] Alternatively, the control unit 130 can be configured to control the charging or discharging operation of the battery 200, which is one of the control operations of the battery 200. In this case, the control unit 130 can directly perform charging or discharging control of the battery 200. Alternatively, the control unit 130 can indirectly instruct or control another component located inside or outside the active discharge device 100 to perform charging or discharging control.

[0047] Additionally, the control unit 130 can perform processing operations based on the state of the battery 200. In this case, the control unit 130 can be configured to perform different processing operations for the corresponding state. Furthermore, the control unit 130 can perform at least partially the same processing operations for different states. Moreover, the processing operations performed by the control unit 130 do not necessarily include only active operations, but may also include passive operations. In particular, the processing operations performed by the control unit 130 may include not performing any control or communication.

[0048] In addition, when the control unit 130 directly performs the processing operation of the battery 200, it can send the processing result to another component.

[0049] Furthermore, the battery management operations according to the embodiments of this disclosure can be applied not only to a single battery cell, but also to a unit comprising multiple battery cells, such as a cell assembly, battery module, battery pack, battery rack, or energy storage system (ESS).

[0050] Furthermore, the control unit 130 may selectively include, at least partially, a processor, a controller, an application-specific integrated circuit (ASIC), another chipset, logic circuits, registers, a communication modem, data processing devices, etc., to perform related operations or functions. Additionally, their operation can be implemented in software, in which case the program can be stored in the storage unit 120. In this respect, the term "control unit 130" can be used interchangeably with terms such as processor, controller, or chipset. Furthermore, at least some functions of the measurement unit 110 can also be implemented by these components.

[0051] Furthermore, the control unit 130 does not necessarily need to be physically integrated or arranged in the same location. For example, some functions of the control unit 130 can be performed on the battery 200 side, and other functions of the control unit 130 can be performed on the vehicle side.

[0052] More specifically, at least a portion of the control unit 130 can be implemented by a battery management system (BMS), energy storage system (ESS), or the like, typically included in the battery pack. In this case, at least a portion of the control unit 130 can be implemented as part of the battery 200. Alternatively, at least a portion of the control unit 130 can be located outside the active discharge device 100. For example, at least some functions of the control unit 130 can be implemented by a control device mounted on the vehicle—such as a VCU or ECU. Additionally, the measurement unit 110 can be implemented as an integrated component or a separate component.

[0053] Note that an active discharge device 100 can integrate and perform diagnostic and / or control operations for each of the multiple batteries 200. Alternatively, a single active discharge device 100 can be configured for each battery 200. For example, when three batteries 200 are configured, three active discharge devices 100 can be configured to perform diagnostic and / or control operations for each of the three batteries 200. In this case, among the multiple active discharge devices 100, one active discharge device 100 can operate as a master device, and the remaining active discharge devices 100 can operate as slave devices. The active discharge device 100 operating as a master device can control the operation of the remaining active discharge devices 100 operating as slave devices to perform integrated management of the multiple batteries 200. Alternatively, all of the multiple active discharge devices 100 can operate as slave devices, and a single active discharge device 100 can be configured to control the operation of all the multiple active discharge devices 100 operating as slave devices.

[0054] Specifically, the control unit 130 according to an embodiment of this disclosure converts thermal energy into electrical energy and reduces the temperature of the PCB board increased due to heat generation via a cooling system. The power used for the operation of the cooling system can be configured to be supplemented by an energy harvesting circuit.

[0055] In the following text, reference will be made to Figure 2 and Figure 3 The method described can be performed by an active discharge device according to embodiments of the present disclosure.

[0056] Figure 2 and Figure 3 This is a diagram illustrating operations that can be performed by a battery active discharge device according to some embodiments of the present disclosure.

[0057] In this disclosure, when a problem occurs in the battery, the main positive / negative relay inside the battery is disconnected, and the X-cap connected to the battery link voltage also needs to be discharged. This is to prevent HV voltage from being applied to vehicle components (e.g., inverters, DC-DC converters, etc.) connected to the link voltage. In this case, an active discharge circuit (resistor, switch) is arranged on the vehicle side to discharge the X-cap. The need to place an active discharge resistor and an active discharge switch results in a fixed cost for the battery system application.

[0058] In other words, according to relevant technologies, the main positive / negative relay, the pre-charge relay for pre-charging, and the pre-charge resistor (R1) are arranged on the battery side. On the vehicle side, an X-cap (C1) is provided, and the active discharge switch (SW1) and the active discharge resistor (R2) are arranged to discharge the voltage formed in the X-cap when the relay is disconnected.

[0059] Active discharge circuits are designed to discharge the X-cap at the link voltage terminals in the event of a system problem. Typically, resistors and switches for active discharge are placed at the vehicle terminals to discharge the X-cap and to prevent high voltage from being applied to vehicle components connected to the battery (e.g., inverters, DC-DC converters, etc.).

[0060] This disclosure aims to reposition resistors and switches for active discharge, which are arranged on the vehicle side, to the battery side, while integrating functionality in the case of replaceable components, and the resistors for active discharge can be replaced on the battery side with pre-charge resistors. The pre-charge resistors are designed based on battery voltage and current for the purpose of charging the X-cap. Since the battery voltage and current are the same as those during charging and discharging, they can also be used to discharge the X-cap through the pre-charge resistors. The switches for active discharge are repositioned from the vehicle side to the battery side and arranged between the negative (-) potential of the X-cap and the pre-charge resistors, thereby enabling the X-cap to discharge through the pre-charge resistors.

[0061] The relevant technologies involve battery-side pre-charge resistors, vehicle-side active discharge resistors, and vehicle-side active discharge switches.

[0062] This disclosure relates to a battery-side pre-charge resistor and a battery-side active discharge switch.

[0063] In the present disclosure, as in related technologies, the main positive / negative relay, pre-charge relay, and resistor (R1) are located on the battery side, but an active discharge switch (SW1) is also provided. On the vehicle side, only X-cap (C1) is provided, and the prior art active discharge switch or resistor (R2) is not provided.

[0064] Main positive / negative relay: A relay used as a switch to connect the battery voltage / power to the vehicle terminals outside the battery. It typically includes one relay located at HV+ (positive) and one relay located at HV- (negative).

[0065] X-cap: A vehicle terminal capacitor that keeps the link voltage, which serves as the external voltage for the battery relay, in a smooth state.

[0066] Active discharge: In the event of a battery problem, discharge is performed by connecting a separate active discharge resistor to rapidly discharge the link voltage formed in the X-cap outside the battery.

[0067] A pre-charge resistor located on the battery side can replace an active discharge resistor that needs to be located on the vehicle side (the active discharge switch needs to be repositioned from the vehicle side to the battery side).

[0068] Therefore, the unit cost of the battery system can be reduced by not using active discharge resistor components on the vehicle side.

[0069] Below, we will refer to Figure 4 Describe the computing device that can realize active discharge-related control equipment.

[0070] Figure 4 This is a diagram illustrating a computing device that can implement devices and / or systems according to various embodiments of the present disclosure.

[0071] The computing device 1500 may include one or more processors 1510, a bus 1550, a communication interface 1570, a memory 1530 loaded with a computer program 1591 to be executed by the processor 1510, and a storage device for storing the computer program. However, Figure 4 Only components relevant to embodiments of this disclosure are illustrated. Therefore, those skilled in the art will appreciate that, in addition to… Figure 4 In addition to the components shown, other general-purpose components may also be included.

[0072] Processor 1510 controls the overall operation of each component of computing device 1500. Processor 1510 may be configured to include a central processing unit (CPU), microprocessor unit (MPU), microcontroller unit (MCU), graphics processing unit (GPU), or any other form of processor known in the art. Additionally, processor 1510 may execute the operation of at least one application or program to perform methods according to embodiments of this disclosure. Computing device 1500 may have one or more processors.

[0073] Memory 1530 stores various data, commands, and / or information. Memory 1530 can load one or more programs 1591 from storage 1590 to perform methods according to embodiments of the present disclosure. Memory 1530 may be implemented as volatile memory, such as RAM, but the scope of the present disclosure is not limited thereto.

[0074] Bus 1550 provides communication between components of computing device 1500. Bus 1550 can be implemented as various types of buses, such as address bus, data bus, and control bus.

[0075] Communication interface 1570 supports wired and wireless Internet communication with computing device 1500. Furthermore, communication interface 1570 can support various communication methods other than Internet communication. Therefore, communication interface 1570 can be configured to include communication modules well-known in the art within the scope of this disclosure.

[0076] According to some embodiments, the communication interface 1570 may be omitted.

[0077] Storage 1590 can non-temporarily store one or more programs 1591 and various data.

[0078] Storage 1590 may be configured to include non-volatile memory, such as read-only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), and flash memory, hard disk, removable disk, or any form of computer-readable recording medium known in the art to which this disclosure pertains.

[0079] Computer program 1591 may include one or more instructions that, when loaded into memory 1530, cause processor 1510 to perform methods / operations according to various embodiments of the present disclosure. That is, processor 1510 can perform methods / operations according to various embodiments of the present disclosure by executing one or more instructions.

[0080] The above has been referenced. Figures 1 to 4 Various embodiments and effects of this disclosure according to examples are described. Effects according to the spirit of this disclosure are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art from the description.

[0081] The above reference Figures 1 to 4The spirit of the invention described herein can be implemented as computer-readable code on a computer-readable medium. The computer-readable recording medium can be, for example, a removable recording medium (CD, DVD, Blu-ray disc, USB storage device, removable hard disk) or a fixed recording medium (ROM, RAM, computer-attached hard disk). A computer program recorded on a computer-readable recording medium can be transmitted via a network such as the Internet to another computing device, installed on that other computing device, and thus used on that other computing device.

[0082] Although all components constituting embodiments of this disclosure have been described as operating in combination or in combination, the spirit of this disclosure is not necessarily limited to such embodiments. That is, within the scope of this disclosure, all components may optionally be combined and operated with one or more other components.

[0083] Although the operations are shown in a specific order in the accompanying drawings, it should not be construed as ensuring that the desired results can be obtained when the operations must be performed in a specific order or sequential order, or when all the shown operations must be performed. In some cases, multitasking and parallel processing may be advantageous. Furthermore, it should not be construed that the separation of the various configurations in the above embodiments is necessarily necessary, and it should be understood that the described program components and systems can generally be integrated together into a single software product or packaged into multiple software products.

[0084] Although embodiments of the present disclosure have been described with reference to the accompanying drawings, those skilled in the art will appreciate that the present disclosure may be implemented in other specific forms without altering its spirit or essential characteristics. Therefore, it should be understood that the above embodiments are limiting in all respects. The scope of protection of this disclosure should be interpreted based on the following claims, and all technical concepts within the equivalent scope should be construed as being included within the scope of rights defined by the spirit of this disclosure.

Claims

1. A battery active discharge device, comprising: A capacitor is disposed on the vehicle side and configured to keep the link voltage in a smooth state; as well as A pre-charge resistor is disposed on the battery side and configured to charge or discharge a capacitor disposed on the vehicle side.

2. The active battery discharge device according to claim 1 further includes: A main positive relay, which is arranged on the battery side; as well as A pre-charge relay having a first terminal connected to a first terminal of the main positive relay and a second terminal connected to a first terminal of the pre-charge resistor. The second end of the pre-charge resistor is connected to the second end of the main positive relay.

3. The active battery discharge device according to claim 2, wherein, When the pre-charge relay is turned on, the capacitor is charged through the pre-charge resistor.

4. The active battery discharge device according to claim 2 further includes: A main negative relay, wherein the main negative relay is arranged on the battery side, and An active discharge switch having a first terminal connected between a second terminal of the precharge relay and a first terminal of the precharge resistor, and a second terminal connected to one end of the main negative relay.

5. The active battery discharge device according to claim 4, wherein, When the active discharge switch is turned on, the capacitor discharges through the pre-charge resistor.

6. A battery active discharge related control device, comprising: processor; Network interface; Memory; as well as A computer program, which is loaded into the memory and configured to be executed by the processor. The processor is configured to control: A capacitor is disposed on the vehicle side and configured to keep the link voltage in a smooth state; as well as A pre-charge resistor is disposed on the battery side and configured to charge or discharge a capacitor disposed on the vehicle side.

7. The battery active discharge related control device according to claim 6, wherein, The processor includes: A main positive relay, wherein the main positive relay is disposed on the battery side; and A pre-charge relay, the pre-charge relay having a first terminal connected to a first terminal of the main positive relay and a second terminal connected to a first terminal of the pre-charge resistor, and The pre-charge resistor is controlled such that its second terminal is connected to the second terminal of the main positive relay.

8. The battery active discharge related control device according to claim 7, wherein, The processor is also configured to control the capacitor to charge via the precharge resistor when the precharge relay is turned on.

9. The battery active discharge related control device according to claim 7, wherein, The processor is also configured to control: A main negative relay, wherein the main negative relay is disposed on the battery side; and An active discharge switch having a first terminal connected between a second terminal of the precharge relay and a first terminal of the precharge resistor, and a second terminal connected to one end of the main negative relay.

10. The battery active discharge related control device according to claim 9, wherein, The processor is also configured to control the capacitor to discharge via the pre-charge resistor when the active discharge switch is turned on.

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