A wireless battery management system for a vehicle and a vehicle

Abstract

The application provides a wireless battery management system of a vehicle and the vehicle, wherein the system comprises: a wireless battery management module, which is used for obtaining working information of a battery in real time based on a wireless communication technology, so as to form data monitoring of the battery; a power supply module, which is used for supplying power to a plurality of other chips in the vehicle, and generating an enabling signal to drive an external driving chip to cut off a contactor high-voltage loop when at least one other chip of the vehicle is abnormal; a high-voltage loop interlocking module, which is used for sending a pulse width modulation signal to an external high-voltage connector, and detecting a return signal, and controlling an H-bridge driving chip according to the detected return signal, so as to determine a connection state of the external high-voltage connector. The design flexibility of the battery module, the energy density of the battery pack and the assembly efficiency are improved, the functional integrity and stability of the whole system are ensured, and the locking and unlocking functions of the H-bridge driving chip are realized.

Description

Technical Field

[0001] This application relates to the field of vehicle battery management technology, and more specifically, to a wireless battery management system for a vehicle and a vehicle. Background Technology

[0002] Currently, traditional vehicle battery management systems (BMS) are all wired BMS. Wired BMS have the following problems: (1) Complex wired connection structure: Traditional wired BMS uses twisted-pair cables to connect the battery monitor in a daisy chain, resulting in complex cable layout and increasing the weight and complexity of the battery pack; (2) Low reliability: Each battery module must be connected to the monitoring chip through a communication cable, requiring a very reliable connection. This usually requires the use of heavy copper wire, and connectors and cables are prone to failure, becoming the main cause of battery pack problems; (3) High maintenance costs: Failure of cables and connectors may lead to the replacement of the entire battery pack, which will generate high maintenance costs, a burden on both car owners and manufacturers; (4) Large space occupation: Wired cables occupy a large amount of space in the battery pack, resulting in a large overall volume, which limits the improvement of battery energy density and the realization of vehicle lightweighting.

[0003] Meanwhile, the power supply to the chips in the vehicle and the protection of the high-voltage loop both have certain defects, resulting in a high risk of abnormality in the external high-voltage circuit and a high-voltage safety risk in the control of the H-bridge drive chip. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a wireless battery management system for a vehicle and a vehicle, which can significantly reduce wiring requirements through a wireless battery management module based on wireless communication technology, thereby reducing the size of the battery pack, improving the design flexibility of the battery module, the energy density of the battery pack and the assembly efficiency, while reducing the error rate in the assembly process, and thus reducing the after-sales maintenance costs for vehicle manufacturers. The power supply module controls the external drive chip to control the on and off of the contactor high-voltage circuit, the high-voltage loop interlock module controls the external high-voltage loop, and the H-bridge drive chip is controlled according to the return signal to realize the locking and unlocking functions.

[0005] In a first aspect, embodiments of this application provide a wireless battery management system for a vehicle, comprising: a wireless battery management module for acquiring battery operating information in real time based on wireless communication technology to form data monitoring of the battery; a power supply module for supplying power to multiple other chips in the vehicle, and generating an enable signal when at least one other chip in the vehicle malfunctions, thereby driving an external drive chip to cut off the contactor high-voltage circuit; and a high-voltage loop interlock module for sending a pulse width modulation signal to an external high-voltage connector, and for detecting a return signal and controlling an H-bridge drive chip based on the detected return signal to determine the connection status of the external high-voltage connector, wherein the pulse width modulation signal returns to the high-voltage loop interlock module via the external high-voltage connector, and the return signal is a signal that returns to the high-voltage loop interlock module via the external high-voltage connector.

[0006] Optionally, the wireless battery management module includes a patch antenna, a wireless chip, and a 2.4GHz bandpass filter. The distance between the patch antenna and the upper space is at least a first distance to avoid interference from non-air media. The wireless chip includes a JTAG interface and a UART interface. The JTAG interface is used for programming, and the UART interface is used for debugging the antenna chip. The insertion loss of the 2.4GHz bandpass filter is between 2.1dB and 4.0dB.

[0007] Optionally, the battery's operating information includes battery temperature information, battery voltage information, and battery current information. The battery temperature information, battery voltage information, and battery current information are transmitted with clock synchronization to ensure the accuracy of data acquisition. The wireless battery management module adopts a SmartMesh architecture to avoid failure of the wireless battery management module due to the failure of a single or / or multiple nodes.

[0008] Optionally, the power supply module includes a power supply chip, wherein the power supply chip is selected by the following steps: determining the standard output value of the power supply chip based on the current required by the external load of the wireless battery management system and the voltage required by the external load; and selecting the power supply chip based on the standard output value of the power supply chip.

[0009] Optionally, the power supply chip outputs multiple power supplies, including a primary power supply and a secondary power supply. The power supply module further includes a first linear regulator. The primary power supply output by the power supply chip is regulated by the first linear regulator to output a first target voltage. The power supply chip includes a second linear regulator. The second linear regulator regulates the internal voltage of the power supply chip and outputs a second target voltage, so that the power supply chip outputs multiple secondary power supplies.

[0010] Optionally, the high-voltage loop interlock module includes a fault protection chip, which is used for ground and power supply protection, as well as for overcurrent and overtemperature protection.

[0011] Optionally, the signal input terminal of the high-voltage loop interlock module is further provided with a sampling circuit, which is used to perform auxiliary sampling for circuit diagnosis.

[0012] Optionally, the high-voltage loop interlock module further includes a power supply short-circuit protection circuit, which includes multiple resistors connected in parallel. The number of resistors connected in parallel and the resistance value of each resistor are determined by the following steps: obtaining power supply protection requirements and determining the number of resistors connected in parallel and the resistance value of each resistor based on the power supply protection requirements.

[0013] Optionally, the signal input terminal of the high-voltage loop interlock module further includes a short-circuit control circuit, which is used to cut off the power supply circuit when the power supply is short-circuited.

[0014] Secondly, embodiments of this application also provide a vehicle, including a vehicle body and a wireless battery management system as described in any of the above.

[0015] The wireless battery management system and vehicle provided in this application embodiment can significantly reduce wiring requirements through the wireless battery management module based on wireless communication technology, thereby reducing the size of the battery pack, improving the design flexibility of the battery module, the energy density of the battery pack and the assembly efficiency, while reducing the error rate in the assembly process, and thus reducing the after-sales maintenance costs for vehicle manufacturers. The power supply module controls the external drive chip to control the on / off of the contactor high-voltage circuit, the high-voltage loop interlock module controls the external high-voltage loop, and the H-bridge drive chip is controlled according to the return signal to realize the locking and unlocking functions.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a wireless battery management system for a vehicle provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of a wireless battery management module provided in an embodiment of this application;

[0020] Figure 3 A schematic diagram of a power supply module provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of a high-voltage loop interlock module provided in an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, every other embodiment obtained by those skilled in the art without inventive effort falls within the scope of protection of this application.

[0023] First, the applicable scenarios for this application will be introduced. This application can be applied to the field of vehicle battery management technology.

[0024] Research has revealed that current traditional vehicle battery management systems (BMS) are all wired BMS. Wired BMS have the following problems: (1) Complex wired connection structure: Traditional wired BMS uses twisted-pair cables to connect the battery monitor in a daisy-chain manner, resulting in complex cable layout and increasing the weight and complexity of the battery pack; (2) Low reliability: Each battery module must be connected to the monitoring chip through a communication cable, requiring a very reliable connection. This usually requires the use of heavy copper wire, and connectors and cables are prone to failure, becoming the main cause of battery pack problems; (3) High maintenance costs: Failure of cables and connectors may require the replacement of the entire battery pack, which will generate high maintenance costs, a burden on both car owners and manufacturers; (4) Large space occupation: Wired cables occupy a large amount of space in the battery pack, resulting in a large overall volume, which limits the improvement of battery energy density and the realization of vehicle lightweighting.

[0025] Meanwhile, the power supply to the chips in the vehicle and the protection of the high-voltage loop both have certain defects, resulting in a high risk of abnormality in the external high-voltage circuit and a high-voltage safety risk in the control of the H-bridge drive chip.

[0026] Based on this, this application provides a wireless battery management system and a vehicle, which can significantly reduce wiring requirements through the wireless battery management module based on wireless communication technology, thereby reducing the size of the battery pack, improving the design flexibility of the battery module, the energy density of the battery pack and the assembly efficiency, while reducing the error rate in the assembly process, and thus reducing the after-sales maintenance costs for vehicle manufacturers. The power supply module controls the external drive chip to control the on / off of the contactor high-voltage circuit, the high-voltage loop interlock module controls the external high-voltage loop, and the H-bridge drive chip is controlled according to the return signal to realize the locking and unlocking functions.

[0027] Please see Figure 1 , Figure 1 This is a schematic diagram of a wireless battery management system for a vehicle provided in an embodiment of this application. Figure 1 As shown in the figure, the wireless battery management system for vehicles provided in this application embodiment includes: a wireless battery management module 101, a power supply module 102, and a high-voltage loop interlock module 103.

[0028] The wireless battery management module is used to acquire battery operating information in real time based on wireless communication technology, so as to form data monitoring of the battery.

[0029] To ensure the Battery Management System (BMS) can communicate wirelessly and transmit data accurately and promptly in a confined environment, this application employs a mature wireless communication technology. This invention selects Analog Devices' ADRF88 series wireless chips, using the ADRF8850 as the host and the ADRF8800 as the node, with different firmware. This chip is based on the mature Zigbee protocol, with customized modifications and encryption to meet automotive functional safety requirements.

[0030] For details, please refer to Figure 2 , Figure 2 This is a schematic diagram of a wireless battery management module provided in an embodiment of this application. Figure 2 As shown in the figure, the wireless battery management module provided in this application embodiment includes: a wireless chip 101, a patch antenna 102, and a 2.4GHz bandpass filter 103.

[0031] The distance between the patch antenna and the upper space is at least a first distance to avoid interference from non-air media.

[0032] Here, the patch antenna chosen in this invention has a certain height to increase the antenna's transmission power and efficiency. Compared to PCB antennas, patch antennas are lower in cost, higher in efficiency, and have easier impedance control. Patch antennas can also reduce the influence of PCB material and external interference.

[0033] The wireless chip includes a JTAG interface and a UART interface. The JTAG interface is used for programming, and the UART interface is used for debugging the antenna chip.

[0034] Here, the wireless chip is powered by 3.3V and has JTAG and UART interfaces for programming and debugging, providing standard interfaces to facilitate development and debugging.

[0035] For example, to ensure the transmission efficiency of the antenna, the present invention requires that the space above the antenna be at least 10mm to meet the space requirements for small external radiation signals and to avoid interference with non-air media.

[0036] The insertion loss of the 2.4GHz bandpass filter is between 2.1dB and 4.0dB.

[0037] To improve the robustness of the wireless circuitry, this invention incorporates a 2.4GHz bandpass filter (Murata SF2124E) to reduce external interference, achieving an insertion loss between 2.1dB and 4.0dB. Furthermore, a standard IPEX3 connector is used for wireless debugging.

[0038] For example, the battery's operating information includes the battery's temperature information, battery's voltage information, and battery's current information. The data transmission of the battery's temperature information, battery's voltage information, and battery's current information is clock-synchronized to ensure the accuracy of data acquisition.

[0039] The wireless battery management module adopts a SmartMesh architecture to avoid failure of the wireless battery management module due to the failure of a single or / or multiple nodes.

[0040] Here, real-time monitoring of information such as temperature, voltage, and current is crucial for the BMS.

[0041] It should be noted that the SmartMesh technology used in this application ensures clock synchronization for data transmission across all nodes, thereby improving the accuracy of data acquisition. The SmartMesh architecture also prevents the failure of the entire system due to the failure of a single or multiple nodes, and achieves up to 99.99% transmission reliability through path hierarchy and frequency hopping technology.

[0042] In addition, SmartMesh uses 128-bit AES encryption to improve communication security.

[0043] Optionally, the ADI wireless chip used in this application supports up to 64 nodes, which can meet the needs of different vehicle models and applications, thereby expanding the flexibility of the battery management system.

[0044] The power supply module is used to supply power to multiple other chips in the vehicle, and generates an enable signal when at least one other chip in the vehicle malfunctions, so as to drive an external drive chip to cut off the high-voltage circuit of the contactor through the enable signal.

[0045] For example, when the power supply chip experiences abnormal power output, the MCU actively sends a fault code, or the MCU program malfunctions (such as a watchdog reset), or other monitoring signal abnormalities, the power supply chip can enable its output function to safely generate a fail-safe signal (active low), thereby directly driving the external driver chip to switch the contactor's high-voltage circuit to ensure the safety of the function.

[0046] For details, please refer to Figure 3 , Figure 3 This is a schematic diagram of a power supply module provided in an embodiment of this application. Figure 2 As shown in the figure, the power supply module provided in this application embodiment includes: a power supply chip 1021, a first linear regulator LOD1, and a second linear regulator LOD2.

[0047] Specifically, you can select the power supply chip by following these steps:

[0048] The standard output value of the power supply chip is determined based on the current and voltage required by the external load of the wireless battery management system.

[0049] Select the power supply chip based on its standard output value.

[0050] Here, based on the current and voltage required by the external load of the wireless battery management system, the most critical power supply chip in the power supply circuit is selected. For example, NXP's SBC chip MC33FS6510LAE can be chosen. The power supply chip is not only a key component for power supply but also possesses crucial characteristics for the functional safety of the entire system.

[0051] Specifically, the power supply chip outputs multiple power supplies, including a primary power supply and a secondary power supply. The power supply module also includes a first linear regulator. The primary power supply output by the power supply chip is regulated by the first linear regulator to output a first target voltage.

[0052] The power supply chip includes a second linear regulator. After the second linear regulator regulates the internal voltage of the power supply chip, it outputs a second target voltage so that the power supply chip can output multiple secondary power supplies.

[0053] For example, the power supply chip outputs multiple power supplies, among which the first-level power supply VPRE outputs a 5V power supply through an LDO1 (e.g., TPS7B4253-Q1) to supply the power requirements of the high-voltage board.

[0054] Meanwhile, the power supply chip also outputs three secondary power supplies through its internal LDO2, including the CORE power supply to the MCU core and the VCCA power supply to the MCU's I / O ports.

[0055] In addition, the power supply Vaux also supplies power to the communication CAN chip and other pull-up / pull-down circuit modules, thereby ensuring the functional integrity and stability of the entire system.

[0056] It should be noted that the power supply chip integrates multiple power output functions, achieves an ASILD functional safety level, and has watchdog functionality and communication capabilities.

[0057] For example, the power supply chip can provide power to multiple modules, including an MCU module, a CAN communication module, an RTC module, and other circuits. Different power interfaces are assigned to each module based on their different current requirements and application scenarios.

[0058] Furthermore, the RTC module has an independent power supply because the RTC needs to maintain a continuous power supply to perform the timed wake-up function when the system is in a low-power state.

[0059] Optionally, in BMS systems that require functional safety, the selection of the MCU needs to consider a multi-core architecture, sufficient memory and RAM to support AUTOSAR (AUTOMOTIVE Open System Architecture). Considering that the BMS will integrate some ECU functions and require multiple communication interfaces (such as CANFD, LIN, Sent, SPI, etc.), chip planning is crucial. After comparing and analyzing several chips, this application selected the Infineon TC389 chip as the main controller, which is pin-compatible with the TC2xx and TC3xx series MCU chips. This chip has four main cores and two lockstep cores, a clock frequency of 330MHz, 10MB of built-in Flash and 1568KB of RAM, and supports 12 CANFD interfaces and 24 LIN interfaces, with a functional safety level of ASIL D.

[0060] The high-voltage loop interlock module is used to send pulse width modulation signals to external high-voltage connectors and to detect return signals. Based on the detected return signals, it controls the H-bridge driver chip to determine the connection status of the external high-voltage connectors. The pulse width modulation signals return to the high-voltage loop interlock module through the external high-voltage connectors, and the return signals are signals that return to the high-voltage loop interlock module through the external high-voltage connectors.

[0061] For example, please refer to Figure 4 , Figure 4 This is a schematic diagram of a high-voltage loop interlock module provided in an embodiment of this application. Figure 2 As shown in the figure, the high-voltage loop interlock module provided in this application embodiment includes: a fault protection chip 1031, a short-circuit control circuit 1032, a sampling circuit 1033, a power supply short-circuit protection circuit 1031, a signal input terminal, and a signal transmitting terminal.

[0062] Specifically, the pulse width modulation (PWM) signal sent by the high-voltage loop interlock module is returned to the signal input terminal of the BMS high-voltage loop interlock module through the external high-voltage connector. The returned signal is divided and enters the MCU. The high-voltage loop interlock module determines the connection status of the external high-voltage connector by detecting whether the returned signal is the expected signal.

[0063] The PWM signal source has an adjustable frequency function.

[0064] For example, external high-voltage connectors include electrical components such as battery packs, OBCs, DC-DC converters, high-voltage drives, and heating devices.

[0065] It should be noted that, for the drive circuit of the high-voltage contactor, the rated operating current of the vehicle's high-voltage contactor is 600mA, and the instantaneous maximum current can reach 2A. A maximum of four contactors can operate simultaneously, including the main positive, main negative, charging positive, and charging negative contactors. For functional safety requirements, the contactor control requires multiple control mechanisms to reduce the contactor failure rate and improve high-voltage safety.

[0066] The vehicle in this application employs a configuration where high-side and low-side contactors are controlled separately. The low-side contactors cannot share the same chip to eliminate common-cause interference. Based on project experience, this configuration can achieve functional safety level ASIL C. The high-side driver chip is ST's VND7140AJ, with a maximum current output limiting capability of 34A and a continuous output current of 11A; the low-side driver chip is ST's VNL5090S5-E, with an output limiting capability of 13A.

[0067] Specifically, the signal output terminal of the high-voltage loop interlock module is equipped with an LDO Tracker TPS7B4254 chip to provide power output. The LDO Tracker TPS7B4254 also has current limiting protection function.

[0068] Please see Figure 4 The high-voltage loop interlock module includes a fault protection chip, which is used for ground and power supply protection, as well as for overcurrent and overtemperature protection.

[0069] For example, the fault protection chip can be an LDO Tracker chip of model TPS7B4253-Q1, which has short-circuit protection to ground and power supply, overcurrent protection and overtemperature protection functions.

[0070] Please see Figure 4 The high-voltage loop interlock module is also equipped with a sampling circuit at its signal input terminal, which is used to perform auxiliary sampling for circuit diagnosis.

[0071] Please see Figure 4 The high-voltage loop interlock module also includes a power supply short-circuit protection circuit, which includes multiple resistors connected in parallel.

[0072] The number of resistors connected in parallel and the resistance value of each resistor in parallel are determined through the following steps:

[0073] Obtain the power protection requirements, and determine the number of resistors connected in parallel and the resistance value of each resistor based on the power protection requirements.

[0074] Please see Figure 4 The signal input terminal of the high-voltage loop interlock module also includes a short-circuit control circuit, which is used to cut off the power supply circuit when the power supply is short-circuited.

[0075] The wireless battery management system and vehicle provided in this application embodiment can significantly reduce wiring requirements through the wireless battery management module based on wireless communication technology, thereby reducing the size of the battery pack, improving the design flexibility of the battery module, the energy density of the battery pack and the assembly efficiency, while reducing the error rate in the assembly process, and thus reducing the after-sales maintenance costs for vehicle manufacturers. The power supply module controls the external drive chip to control the on / off of the contactor high-voltage circuit, the high-voltage loop interlock module controls the external high-voltage loop, and the H-bridge drive chip is controlled according to the return signal to realize the locking and unlocking functions.

[0076] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0077] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0078] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0079] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0080] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0081] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wireless battery management system for a vehicle, characterized in that, The wireless battery management system includes: The wireless battery management module is used to acquire real-time battery operating information based on wireless communication technology, in order to form a data monitoring system for the battery. The power supply module supplies power to multiple other chips in the vehicle and generates an enable signal when at least one of the other chips malfunctions. This enable signal then drives an external drive chip to disconnect the contactor's high-voltage circuit. The high-voltage loop interlock module is used to send pulse width modulation signals to external high-voltage connectors and to detect return signals. Based on the detected return signals, the module controls the H-bridge driver chip to determine the connection status of the external high-voltage connectors. The pulse width modulation signals return to the high-voltage loop interlock module through the external high-voltage connectors. The return signals are signals that return to the high-voltage loop interlock module through the external high-voltage connectors. The power supply chip outputs multiple power supplies, including a primary power supply and a secondary power supply. The power supply module also includes a first linear regulator. The primary power supply output by the power supply chip is regulated by the first linear regulator to output a first target voltage. The power supply chip includes a second linear regulator. After the second linear regulator regulates the internal voltage of the power supply chip, it outputs a second target voltage so that the power supply chip can output multiple secondary power supplies. The power supply module includes a power supply chip. The power supply chip is selected through the following steps: The standard output value of the power supply chip is determined based on the current and voltage required by the external load of the wireless battery management system. Select the power supply chip based on its standard output value.

2. The wireless battery management system according to claim 1, characterized in that, The wireless battery management module includes a patch antenna, a wireless chip, and a 2.4GHz bandpass filter. The distance between the patch antenna and the upper space is at least a first distance to avoid interference from non-air media. The wireless chip includes a JTAG interface and a UART interface. The JTAG interface is used for programming, and the UART interface is used for debugging the wireless chip. The insertion loss of the 2.4 GHz bandpass filter is between 2.1 dB and 4.0 dB.

3. The wireless battery management system according to claim 1, characterized in that, The battery's operating information includes its temperature, voltage, and current. The battery temperature, voltage, and current information are transmitted via clock synchronization to ensure data acquisition accuracy. The wireless battery management module adopts a SmartMesh architecture to avoid failure of the wireless battery management module due to the failure of a single or / or multiple nodes.

4. The wireless battery management system according to claim 1, characterized in that, The high-voltage loop interlock module includes a fault protection chip, which is used for ground and power supply protection, as well as for overcurrent and overtemperature protection.

5. The wireless battery management system according to claim 1, characterized in that, The high-voltage loop interlock module is also equipped with a sampling circuit at its signal input terminal, which is used to perform auxiliary sampling for circuit diagnosis.

6. The wireless battery management system according to claim 1, characterized in that, The high-voltage loop interlock module also includes a power supply short-circuit protection circuit, which comprises multiple resistors connected in parallel. The number of resistors connected in parallel and the resistance value of each resistor in parallel are determined through the following steps: Obtain the power protection requirements, and determine the number of resistors connected in parallel and the resistance value of each resistor based on the power protection requirements.

7. The wireless battery management system according to claim 1, characterized in that, The signal input terminal of the high-voltage loop interlock module also includes a short-circuit control circuit, which is used to cut off the power supply circuit when the power supply is short-circuited.

8. A vehicle, characterized in that, Includes the vehicle body and the wireless battery management system as described in any one of claims 1-7.

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