High-voltage integrated unit for power battery, vehicle battery system and computer program product

Abstract

The invention relates to a high-voltage integrated unit for a power battery, and the high-voltage integrated unit at least comprises a first voltage transformation and stabilization module, a communication module, a contactor and a high-voltage integrated unit control module, the voltage transformation and stabilization unit is used for converting the output voltage of the power battery and stabilizing the output voltage at a first low-voltage power supply voltage of the high-voltage integration unit, and the first low-voltage power supply voltage corresponds to a first rated working voltage range of the contactor; the communication module is used for carrying out data exchange between the high-voltage integrated unit control module and a battery management system, the contactor is connected with the output end of the power battery through the voltage transformation and stabilization unit, and the high-voltage integrated unit control module is used for monitoring and / or controlling the contactor and / or the power battery. Furthermore, the application relates to a vehicle battery system and a computer program product.

Description

Technical Field

[0001] The present application relates to a high voltage integrated unit for a power battery. In addition, the present application relates to a vehicle battery system and a computer program product. Background Art

[0002] At present, the contactors of the power batteries of electric vehicles are mainly driven by low-voltage electricity. The Battery Management System (BMS) is connected to the low-voltage power supply system of the vehicle to obtain power, and the low-voltage electricity is connected or disconnected to the contactor through high-side drive, thereby achieving the effect of controlling the connection and disconnection of the contactor.

[0003] Under the current design, the contactor supply voltage will be determined by the voltage amplitude of the low-voltage power supply system. Therefore, when the voltage fluctuates, the closing time of the contactor will also fluctuate, and when the voltage is low, the contactor may appear too slow to close or even not close, which causes the electric vehicle to fail to start. In addition, when the contactor is closed, a large impact current of up to 25-30A will be generated, which will cause a certain impact on the BMS and increase the burden of BMS circuit design and EMC (Electromagnetic Compatibility) design. In addition, a wiring harness is required to realize the power supply and drive of the contactor, and voltage sampling needs to be set at both ends of the contactor to determine the state of the contactor, where high-voltage sampling is required, and it needs to be isolated from the low-voltage part of the BMS. In addition, current sampling is generally powered by low voltage and requires wiring harness cost, and if the current sampling adopts a shunt resistor, it is necessary to weld the wiring harness or directly integrate it into a current sensor pair, the process is relatively complicated, and current monitoring can only be performed when the contactor is closed. In addition, high-voltage insulation testing requires additional power supply circuits and acquisition circuits. When EMI (Electromagnetic Interference) is large, differential mode and common mode parts (inductors, capacitors, etc.) need to be added for filtering. Summary of the invention

[0004] The task of this application is to propose an improved technical solution to at least partially solve the problems existing in the prior art.

[0005] This object is achieved by a high-voltage integrated unit for a power battery, a vehicle battery system and a computer program product. Advantageous embodiments are described in detail in the following description.

[0006] According to a first aspect of the present application, a high-voltage integrated unit for a power battery is proposed, wherein the high-voltage integrated unit comprises at least a first voltage transformation and voltage regulation module, a communication module, a contactor and a high-voltage integrated unit control module, wherein the voltage transformation and voltage regulation unit is used to convert the output voltage of the power battery and stabilize it at a first low-voltage supply voltage of the high-voltage integrated unit, wherein the first low-voltage supply voltage corresponds to a first rated operating voltage range of the contactor, the communication module is used to exchange data between the high-voltage integrated unit control module and a battery management system, the contactor is connected to the output end of the power battery via the voltage transformation and voltage regulation unit, and the high-voltage integrated unit control module is used to monitor and / or control the contactor and / or the power battery.

[0007] The core concept of this application is to connect the contactor to the high-voltage power supply circuit so that the contactor can be controlled by taking power from the high voltage of the power battery; at the same time, high-voltage related functions, especially the high-voltage part of the BMS and the current sampling power function, are added or integrated. In this way, on the one hand, the design difficulty can be reduced and the adverse effects of the unstable situation in the low-voltage power supply on the working performance of the contactor can be avoided; on the other hand, the integration and miniaturization of the system, such as the vehicle system or the battery system, can be improved.

[0008] According to a preferred implementation of the present application, the high-voltage integrated unit control module can implement at least one of the following functions: current detection, high-voltage sampling detection, high-voltage insulation detection, contactor drive, and contactor adhesion detection.

[0009] According to a preferred implementation of the present application, the high-voltage integrated unit control module includes a current detection module, and the current detection module is arranged between the output end of the power battery and the contactor.

[0010] According to a preferred embodiment of the present application, the high-voltage integrated unit control module includes a high-voltage sampling and detection module, and the high-voltage sampling and detection module is used to sample and detect the front-end voltage before the contactor and / or sample and detect the rear-end voltage after the contactor. Preferably, the contactor is subjected to adhesion detection based on the front-end voltage and the rear-end voltage.

[0011] According to a preferred embodiment of the present application, the high-voltage integrated unit control module includes a high-voltage insulation detection module, which is used to detect the insulation resistance between the positive electrode of the power battery and the casing ground and / or the insulation resistance between the negative electrode of the power battery and the casing ground.

[0012] According to a preferred embodiment of the present application, the high-voltage integrated unit control module is configured to receive a control signal issued by a battery management system and control the connection and disconnection of the contactor based on the control signal.

[0013] According to a preferred implementation of the present application, the high-voltage integrated unit control module includes a high-voltage filter module, and the high-voltage filter module is arranged before the contactor or after the contactor.

[0014] According to a preferred implementation of the present application, the voltage transformer and voltage stabilizing unit is also used to convert the output voltage of the power battery and stabilize it at a second low-voltage power supply voltage of the high-voltage integrated unit, or the high-voltage integrated unit control module and / or the communication module includes a second voltage transformer and voltage stabilizing module or is connected to a second voltage transformer and voltage stabilizing module, and the second voltage transformer and voltage stabilizing module is used to convert the first low-voltage power supply voltage and stabilize it at a second low-voltage power supply voltage of the high-voltage integrated unit, and the second low-voltage power supply voltage corresponds to a second rated operating voltage range of the high-voltage integrated unit control module and / or the communication module.

[0015] According to a preferred implementation of the present application, the communication module is configured to enable wired communication and / or wireless communication. Preferably, in the communication with the battery management system, the communication module is configured to enable wireless communication.

[0016] According to a preferred implementation of the present application, the high-voltage integrated unit control module includes a low-voltage power supply module or is connected to a low-voltage power supply module, so that when a failure occurs in the power battery, the low-voltage power supply module can provide low-voltage power supply.

[0017] According to a second aspect of the present application, a vehicle battery system is provided, which includes a power battery, a battery management system and one or more high-voltage integrated units according to the present application.

[0018] According to a third aspect of the present application, a computer program product, such as a computer-readable program medium, is proposed, wherein the computer program product includes or stores computer program instructions, and when the computer program instructions are executed by a processor or a controller, the computer program instructions can at least partially operate or control a high-voltage integrated unit according to the present application and / or a vehicle battery system according to the present application.

[0019] Features and details described in conjunction with the high-voltage integrated unit according to the present application also apply to the vehicle battery system according to the present application and to the computer program product according to the present application, and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application is described in more detail below with reference to the accompanying drawings. The accompanying drawings show:

[0021] Figure 1 A schematic structural diagram of a high voltage integrated unit according to the present application is shown;

[0022] Figure 2 A schematic diagram showing the design of a high voltage integrated unit according to the present application is shown;

[0023] Figure 3 A schematic diagram showing the structure of a vehicle battery system according to the present application; and

[0024] Figure 4 A schematic diagram showing a computer program product according to the present application. DETAILED DESCRIPTION

[0025] In order to make the technical tasks, technical solutions and technical effects of the present application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and exemplary embodiments. It should be understood that the exemplary embodiments described here are only for explanation and not for limitation.

[0026] exist Figure 1 2 shows a schematic diagram of the structure of the high-voltage integrated unit 120 according to the present application. Here, the high-voltage circuit is shown by a bold solid line, and the other parts are low-voltage circuits unless otherwise specified.

[0027] like Figure 1 As shown in , the vehicle battery system 100 may include a power battery, a high voltage integrated unit 120 and a battery management system 130. The power battery may be configured as a rechargeable high voltage battery for energy supply, such as a high voltage battery of 400V or higher. The battery management system 130 is configured to monitor the battery status and in particular includes a BMS low voltage part function.

[0028] like Figure 1 As shown in , the high-voltage integrated unit 120 may include a first voltage transformation and voltage regulation module 102, a communication module 104, a contactor 106, and a high-voltage integrated unit control module 108. Here, the contactor 106 is connected to the Pack terminal 110 at one end; in other words, a power battery 110 is arranged before the contactor 106. In contrast, the contactor 106 is connected to the Link terminal 110' at the other end.

[0029] The voltage conversion and stabilization unit 102 is used to convert and stabilize the output voltage of the power battery 110 (e.g., 400V or other possible high voltages) to a low voltage range required by the high voltage integrated unit 120, such as a first low voltage supply voltage of the high voltage integrated unit 120, wherein the first low voltage supply voltage corresponds to a first rated operating voltage range (e.g., 12V, 24V, etc.) of the contactor 106. Exemplarily, the voltage conversion and stabilization unit 102 includes or is configured as a Buck circuit.

[0030] The communication module 104 is used to exchange data between the high-voltage integrated unit 120 or the high-voltage integrated unit control module 108 and the battery management system 130. Here, the communication via the communication module 104 can be performed in a wired manner and / or in a wireless manner. Exemplarily, the communication module 104 is configured as a necessary communication chip and a corresponding interface and an optional power supply circuit. Exemplarily, the SPI (Serial Peripheral Interface) signal from the high-voltage integrated unit control module 108 is converted into a communication signal, such as a LIN (Local Interconnect Network) or CAN (Controller Area Network) signal, by the communication module 104, so as to communicate with the BMS 130. A similar situation is applicable to converting signals from the battery management system 130, especially the low-voltage BMS, so as to communicate with the high-voltage integrated unit control module 108. Exemplarily, the communication module 104 can be configured as a WBMS (wireless battery management system) chip and an antenna alternatively or additionally to achieve wireless communication with the BMS. This means eliminating cumbersome wire harnesses and, in turn, removing the constraints of physical wiring harnesses, thereby increasing design flexibility, reducing weight and costs, and simplifying maintenance and serviceability.

[0031] The contactor 106 is connected to the output end of the power battery 110 via the voltage transformation and voltage regulation unit 102 ; in other words, the contactor 106 draws power from the power battery 110 via the voltage transformation and voltage regulation unit 102 .

[0032] The high-voltage integrated unit control module 108 is used to monitor and / or control the contactor 106 and / or the power battery 110. Here, the contactor is no longer controlled by the BMS low-voltage power supply system, but is powered and driven by taking power from the high-voltage power battery. As a result, while reducing the design requirements for BMS power supply and electromagnetic compatibility, it also avoids the adverse effects of possible instability of low-voltage power supply on the working performance of the contactor. In addition, the BMS high-voltage part functions and current sampling are integrated to achieve system integration and miniaturization. The combination of the two also allows high-voltage part functions such as high-voltage sampling and insulation detection to continue to work without low-voltage normal power. This integrated design enables platformization, and there is no need to repeat the high-voltage distribution part and the described diagnostic and detection functions, reducing development costs.

[0033] Exemplarily, the high-voltage integrated unit control module 108 receives a control signal from the battery management system 130 and controls the on and off of the contactor 106 based on the control signal. Of course, the high-voltage integrated unit control module 108 can also receive other data signals or control signals from the battery management system 130 and perform corresponding operations based on the data signals or control signals, which will not be described in detail here.

[0034] Exemplarily, the high-voltage integrated unit control module 108 can send detection signals, such as current signals, high-voltage signals, insulation detection signals, and contactor status signals, to the battery management system 130 for use by the battery management system 130. Alternatively or additionally, part or all of the detection signals can also be further processed in the high-voltage integrated unit control module 108, and the high-voltage integrated unit control module 108 itself can monitor and / or control the contactor 106 and / or the power battery 110 in response thereto.

[0035] exist Figure 2 The schematic diagram of the design of the high-voltage integrated unit 120 according to the present application is shown in FIG. It should be noted that in order to draw power from the high voltage, the contactor is connected to the positive and negative electrodes of the high voltage at the same time. Therefore, the technical solution according to the present application is mostly used in contactors with integrated positive and negative electrodes, and for contactors used for single positive and single negative electrodes, it is necessary to set a separate power point for the other electrode of the contactor.

[0036] exist Figure 2 The above figure shows a schematic diagram of the design architecture of the high-voltage integrated unit 120 according to the present application.

[0037] The voltage conversion and stabilization unit 102 (DC voltage conversion and stabilization circuit) is connected to the Pack terminal 110 in the high-voltage loop HV (shown by a bold solid line) and can convert the output voltage of the power battery 110 (for example, 400V or other possible high voltage voltages) and stabilize it in the low voltage range required by the high-voltage integrated unit 120, such as 12V, 24V, etc. required by the contactor 106 and / or 3.3V, 5V, etc. required by the chip, which can also be referred to as the first low-voltage power supply voltage and / or the second low-voltage power supply voltage. Alternatively, the high-voltage integrated unit control module 108 and / or the communication module 104 includes a second voltage conversion and stabilization module or is connected to the second voltage conversion and stabilization module, and the second voltage conversion and stabilization module can convert the first low-voltage power supply voltage (for example, 12V, 24V, etc.) and stabilize it in the second low-voltage power supply voltage (3.3V, 5V, etc.) so as to power the chips in the high-voltage integrated unit control module 108 and / or the communication module 104.

[0038] The communication module 104 in the low voltage power supply circuit LV (shown by the solid line without bold) is powered by the voltage transformer and voltage regulator unit 102 at low voltage, that is, it also draws power from high voltage. The communication module 104 can exchange data with the high voltage integrated unit control module 108, such as Figure 2 The communication module 104 is capable of exchanging data with the low voltage BMS 130 , preferably via wireless communication.

[0039] The contactor 104 is arranged between the Pack terminal 110 and the Link terminal 110' and is connected to the output terminal of the power battery via the voltage transformer and voltage regulator unit 102, that is, it also draws power from the high voltage. As a result, the contactor 104 is self-powered and its performance (such as stability or closing time, etc.) is no longer adversely affected by the BMS low-voltage power supply system. In addition, when certain faults occur in the high-voltage power battery, the contactor 104 will be automatically disconnected due to battery power failure, thereby realizing a physical self-locking function.

[0040] The high-voltage integrated unit control module 108 in the low-voltage power supply circuit LV is powered by the voltage transformer and voltage regulator unit 102 at low voltage and can at least take over the high-voltage part of the BMS function. In this embodiment, the high-voltage integrated unit control module 108 can at least implement at least one of the following functions: current detection, high-voltage sampling detection, high-voltage insulation detection, contactor drive, and contactor adhesion detection.

[0041] In one embodiment, the high voltage integrated unit 120 or the high voltage integrated unit control module 108 includes a current detection module or is capable of implementing current detection, such as in Figure 2As shown in , the current detection module (schematically shown here as a current sensor and a connected acquisition line L1 represented by a bold dashed line) is arranged between the output end or Pack end 110 of the power battery and the contactor. In this case, preferably, current monitoring can also be performed when the contactor is not closed.

[0042] In one embodiment, the high voltage integrated unit 120 or the high voltage integrated unit control module 108 includes a high voltage sampling detection module or is capable of implementing high voltage sampling detection, such as in Figure 2 As shown in the figure, the high voltage sampling detection module (schematically shown here as two groups of acquisition lines L2 and L3 represented by bold dotted lines) can sample and detect the front-end voltage (voltage at the Pack end) before the contactor 106 and can sample and detect the rear-end voltage (voltage at the Link end) after the contactor 106. Preferably, the state of the contactor 106 can be detected, such as contactor adhesion detection, based on the front-end voltage and the rear-end voltage.

[0043] In one embodiment, the high voltage integrated unit 120 or the high voltage integrated unit control module 108 includes a high voltage insulation detection module or is capable of implementing high voltage insulation detection, such as in Figure 2 As shown in the figure, the high-voltage insulation detection module (schematically shown here as a collection line L4 connected to the casing ground GND represented by a bold dotted line) can detect the insulation resistance between the positive electrode of the power battery and the casing ground and / or detect the insulation resistance between the negative electrode of the power battery and the casing ground.

[0044] In one embodiment, the high-voltage integrated unit 120 or the high-voltage integrated unit control module 108 can receive a control signal sent by the battery management system or the low-voltage BMS 130 via the communication module 104 and control the connection and disconnection of the contactor 106 based on the control signal. Similarly, the high-voltage integrated unit 120 or the high-voltage integrated unit control module 108 can send relevant data signals or control signals, such as current values, voltage values, insulation values, etc., to the battery management system or the low-voltage BMS 130 via the communication module 104.

[0045] In one embodiment, the high voltage integrated unit 120 or the high voltage integrated unit control module 108 includes a high voltage filter module FILT. Depending on the actual application, the high voltage filter module can be arranged at the front end (Pack end) of the contactor or at the rear end (Link end) of the contactor. Figure 2 As shown by the non-bold dotted line in the figure, for the sake of ease of understanding, the high-voltage filter circuit arranged before the contactor is shown.

[0046] Here, the high-voltage integrated unit 120 or the high-voltage integrated unit control module 108 can include various components required to realize the above functions. For example, a current sampling chip, a voltage sampling chip, etc. can be integrated. For example, necessary optocoupler isolation relays, reed switch relays, etc. can be integrated for high-voltage sampling and insulation detection opening and closing. For example, the high-voltage integrated unit control module 108 can be constructed as or include an MCU (Micro Control Unit, microprocessor) for undertaking some calculation, diagnosis and control functions, such as controlling optocoupler isolation and insulation detection, such as based on communication signals from a low-voltage BMS; alternatively, the high-voltage integrated unit control module 108 can be constructed as a monitor chip, which has a voltage and current sampling function, a communication function, and a GPIO (General-purpose input / output) and is only responsible for data transmission and control instruction transmission, so as to control based on the calculation results and / or diagnosis results from the low-voltage BMS, such as controlling optocoupler isolation relays, reed switch relays, etc. In addition, necessary isolation power supply chips, high and low side driver chips, and matching ADC chips can be integrated to realize the drive of the contactor and avoid affecting the low-voltage power supply system.

[0047] It should be noted that the above functions, components, arrangements, etc. are merely exemplary and non-restrictive. Those skilled in the art can integrate other functions, use other components, adopt other arrangements, etc. in the high-voltage integrated unit.

[0048] It should be noted that for the sake of functional safety level, the self-powered battery high-voltage integrated unit can retain the low-voltage wiring harness power supply part. In this way, when certain faults occur in the high-voltage power battery, the BMS high-voltage part function can still be maintained through the low-voltage wiring harness power supply part.

[0049] exist Figure 2 The following figure shows a schematic diagram of the installation structure of the high-voltage integrated unit 120 according to the present application in the form of a perspective view.

[0050] Here, the housing HOUS of the self-powered battery high voltage integrated unit is shown in a dotted line frame.

[0051] A self-powered battery high voltage integrated unit control board shown in a rectangle is fixed on the housing, which is PCB+Assembly, referred to as PCBA; alternatively, the self-powered battery high voltage integrated unit control board can be used as the upper cover of the housing. It can be imagined that the self-powered battery high voltage integrated unit control board integrates a DC voltage conversion and voltage stabilization circuit 102, a high voltage integrated unit control module 108, a communication module 104 and various other required components, chips or modules, etc., such as Figure 2In addition, differential mode and common mode capacitors can also be integrated on the PCBA of the high voltage integrated unit control module 108 .

[0052] Here, the self-powered battery high voltage inheritance unit 120 includes at least one set of positive relay POS and negative relay NEG, such as a main positive relay and a main negative relay. The Pack terminal 110 of the power battery can be connected to the Link terminal 110' via the relay and the terminal END_Link.

[0053] Here, the self-powered battery high voltage inheritance unit 120 uses, for example, a floating connector CONN to realize high voltage power supply (directly connected to the Pack terminal). This advantageously achieves efficient and cost-effective automated PCB assembly by eliminating tolerances. Although not shown here, it is conceivable that, depending on the actual application or actual design, the high voltage power supply part may include various other components such as insurance (such as explosive fuses or high temperature fuses), pre-charging circuits, etc.

[0054] Here, if Figure 2 As schematically shown in FIG. 1 , the self-powered battery high voltage integrated unit 120 includes an internal copper busbar COPP for realizing the power transmission of the power battery and connecting with the internal high voltage components. These internal copper busbars can be fixed to the housing by insert injection molding or bolt fixing. In addition, a common mode magnetic ring can be integrated on the internal copper busbar.

[0055] exist Figure 3 Schematic diagrams of the structures of vehicle battery systems 200, 200' according to the present application are shown in FIG.

[0056] exist Figure 3 The above figure schematically shows a top view of a high-voltage integrated unit 120 (or its control board PCBA) and a low-voltage BMS 130 (in PCBA state) attached to a battery module 110 in the case of a master-slave integrated centralized BMS. Preferably, wireless communication is achieved between the high-voltage integrated unit 120 and the low-voltage BMS 130 by means of WBMS technology.

[0057] exist Figure 3The following figure schematically shows a top view of each high-voltage integrated unit 120 (or its control board PCBA) assigned to the corresponding battery module and the low-voltage BMS 130 (in PCBA state) or the main control unit BMU (Battery Management Unit) 130 attached to the battery pack in the case of a master-slave separated distributed BMS. Preferably, the high-voltage integrated unit 120 can at least take over the function of the high-voltage management unit (High Voltage Unit, HVU). Preferably, wireless communication is achieved between each high-voltage integrated unit 120 and the low-voltage BMS 130 or the main control unit BMU 130 by means of WBMS technology.

[0058] exist Figure 4 A schematic diagram of a computer program product 300 according to the present application is shown in FIG.

[0059] The computer program product 300, for example a computer-readable program medium, includes or stores computer program instructions, which, when executed by a processor or a controller, can at least partially operate or control the high-voltage integrated unit 120 according to the present application and / or the vehicle battery system 200, 200' according to the present application.

[0060] In this application, a design scheme using a high-voltage integrated unit of an electric vehicle self-powered battery is proposed, which solves the problem that the power supply, drive and performance of the contactor are affected by the low-voltage power supply system. At the same time, the high-voltage part of the BMS functions are integrated, such as integrated insulation detection, high-voltage detection, current detection and other functions, and the wireless communication function is optionally added to realize the wireless function of the high-voltage part of the BMS, and the high-voltage filtering part is added according to the needs. In this way, the battery electronic and electrical integration, miniaturization and safety are achieved.

[0061] Although specific embodiments of the present application are described in detail herein, they are provided for the purpose of explanation only and should not be considered to limit the scope of the present application. Various alternatives and modifications may be proposed without departing from the core and scope of the present application.

Claims

1. A high-voltage integrated unit (120) for a power battery, the high-voltage integrated unit (120) comprising at least a first voltage transformation and voltage stabilization module (102), a communication module (104), a contactor (106) and a high-voltage integrated unit control module (108), wherein: The voltage conversion and stabilization unit is used to convert the output voltage of the power battery and stabilize it at a first low-voltage supply voltage of the high-voltage integrated unit (120), wherein the first low-voltage supply voltage corresponds to a first rated operating voltage range of the contactor (106); the communication module (104) is used to exchange data between the high-voltage integrated unit control module (108) and a battery management system; the contactor (106) is connected to the output end of the power battery via the voltage conversion and stabilization unit; and the high-voltage integrated unit control module (108) is used to monitor and / or control the contactor (106) and / or the power battery.

2. The high voltage integrated unit (120) according to claim 1, wherein: The high-voltage integrated unit control module (108) is capable of implementing at least one of the following functions: current detection, high-voltage sampling detection, high-voltage insulation detection, contactor (106) driving, and contactor (106) adhesion detection.

3. The high voltage integrated unit (120) according to claim 1 or 2, wherein: The high-voltage integrated unit control module (108) comprises a current detection module, and the current detection module is arranged between the output end of the power battery and the contactor (106).

4. The high voltage integrated unit (120) according to any one of claims 1 to 3, wherein: The high-voltage integrated unit control module (108) comprises a high-voltage sampling and detection module, which is used to sample and detect the front-end voltage before the contactor (106) and / or sample and detect the rear-end voltage after the contactor (106). Preferably, the contactor (106) is subjected to adhesion detection based on the front-end voltage and the rear-end voltage.

5. The high voltage integrated unit (120) according to any one of claims 1 to 4, wherein: The high-voltage integrated unit control module (108) comprises a high-voltage insulation detection module, which is used to detect the insulation resistance between the positive electrode of the power battery and the housing ground and / or to detect the insulation resistance between the negative electrode of the power battery and the housing ground.

6. The high voltage integrated unit (120) according to any one of claims 1 to 5, wherein: The high-voltage integrated unit control module (108) is configured to receive a control signal sent by a battery management system and control the contactor (106) to be turned on and off based on the control signal.

7. The high voltage integrated unit (120) according to any one of claims 1 to 6, wherein: The high-voltage integrated unit control module (108) comprises a high-voltage filter module, which is arranged before the contactor (106) or after the contactor (106).

8. The high voltage integrated unit (120) according to any one of claims 1 to 7, wherein: The voltage conversion and stabilization unit is also used to convert the output voltage of the power battery and stabilize it at a second low-voltage power supply voltage of the high-voltage integrated unit (120); or the high-voltage integrated unit control module (108) and / or the communication module (104) include a second voltage conversion and stabilization module (102) or are connected to a second voltage conversion and stabilization module (102); the second voltage conversion and stabilization module (102) is used to convert the first low-voltage power supply voltage and stabilize it at a second low-voltage power supply voltage of the high-voltage integrated unit (120); the second low-voltage power supply voltage corresponds to a second rated operating voltage range of the high-voltage integrated unit control module (108) and / or the communication module (104).

9. The high voltage integrated unit (120) according to any one of claims 1 to 8, wherein: The communication module (104) is configured to enable wired communication and / or wireless communication. Preferably, in the communication with the battery management system, the communication module (104) is configured to enable wireless communication.

10. The high voltage integrated unit (120) according to any one of claims 1 to 9, wherein: The high-voltage integrated unit control module (108) includes a low-voltage power supply module or is connected to a low-voltage power supply module, so that when a failure occurs in the power battery, the low-voltage power supply module can provide low-voltage power supply.

11. A vehicle battery system (200, 200'), comprising a power battery, a battery management system and one or more high-voltage integrated units (120) according to any one of claims 1 to 10.

12. A computer program product (300), for example a computer-readable program medium, comprising or storing computer program instructions, which, when executed by a processor or a controller, are capable of at least partially operating or controlling a high-voltage integrated unit (120) according to any one of claims 1 to 10 and / or a vehicle battery system (200, 200') according to claim 11.

Images