Battery management system, battery pack and vehicle

Abstract

The utility model provides a battery management system, a battery pack and a vehicle, which belong to the technical field of battery management systems and comprise a micro-control unit, a joint test working group and a wireless transmission circuit. The micro-control unit, the joint test working group and the wireless transmission circuit are integrally arranged in the shell of the battery management system; the micro-control unit is connected with the joint test working group, the joint test working group is also connected with the wireless transmission circuit, and the wireless transmission circuit is also connected with the test end; the wireless transmission circuit is used for establishing wireless communication between the micro-control unit and the test end through the joint test working group, the test end debugs the micro-control unit in a wireless transmission mode, and the wireless transmission circuit is arranged in the shell and communicates with the test end in a wireless mode, so that the micro-control unit is debugged in the wireless transmission mode. Therefore, when the test end debugs the control unit, unpacking and unpacking are not needed any more, the labor cost and the time cost are saved, and the debugging efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery management systems, and in particular to a battery management system, a battery pack and a vehicle. Background Art

[0002] Most car companies still use the most primitive method to debug the battery management system (BMS) development board: unpacking or removing the shell to expose the debugging port, and then using debugging tools to debug the software or interface.

[0003] However, this method has the following disadvantages. First, when a software bug occurs in the product, it will freeze. After freezing, it cannot be repaired and maintained, and can only be dismantled, unpacked, and returned. Second, when analyzing the problem, the battery pack is disassembled and mailed back to the laboratory for disassembly, the conformal coating is removed at high temperature, and the JTAG interface is welded and connected to the debugger for debugging. This results in a large loss of manpower and material resources. Utility Model Content

[0004] The utility model provides a battery management system, a battery pack and a vehicle, which are used to solve the defects in the prior art that the debugging of the battery management system requires unpacking, which is time-consuming and labor-intensive.

[0005] In a first aspect, the utility model provides a battery management system, including: a micro control unit, a joint test working group and a wireless transmission circuit;

[0006] The micro control unit, the joint test working group and the wireless transmission circuit are integrated and arranged inside the housing of the battery management system;

[0007] The micro control unit is connected to the joint test working group, the joint test working group is also connected to the wireless transmission circuit, and the wireless transmission circuit is also connected to the test end;

[0008] The wireless transmission circuit is used to establish wireless communication between the micro control unit and the test end through the joint test working group, and the test end debugs the micro control unit through wireless transmission.

[0009] According to a battery management system provided by the utility model, the wireless transmission circuit includes: a SOC radio frequency chip;

[0010] The SOC radio frequency chip is connected to the joint test working group, and the SOC radio frequency chip is also connected to the test end in a radio frequency communication manner;

[0011] The SOC radio frequency chip is used to establish wireless data communication between the micro control unit and the test end.

[0012] According to a battery management system provided by the utility model, the SOC radio frequency chip includes: a mode selection pin, a clock pin, a data input pin and a data output line pin;

[0013] The mode selection pin is connected to the TMS line of the joint test working group, the clock pin is connected to the TCK line of the joint test working group, the data input pin is connected to the TDI line of the joint test working group, and the data output pin is connected to the TDO line of the joint test working group.

[0014] According to a battery management system provided by the utility model, the wireless transmission circuit includes: a controller, a wireless communication module and an antenna module;

[0015] The controller is connected to the joint test working group, the wireless communication module is connected to the controller for communication, the antenna module is connected to the wireless communication module for communication, and the antenna module is also connected to the test end for wireless communication;

[0016] The controller is used to establish a connection between the wireless communication module and the antenna module and the joint test working group; the wireless communication module and the antenna module are used to establish wireless data communication between the test end and the micro control unit.

[0017] According to a battery management system provided by the utility model, the controller is respectively connected to the TMS line, TCK line, TDI line and TDO line of the joint test working group.

[0018] According to a battery management system provided by the utility model, the test end includes: a demodulator, a debugger and a terminal;

[0019] The demodulator is wirelessly connected to the wireless transmission circuit, the debugger is connected to the demodulator, and the debugger is also connected to the terminal;

[0020] The demodulator is used to demodulate the signal of the wireless transmission circuit, and the terminal is used to send the debugging signal of the debugger to the micro control unit through the demodulator for remote debugging.

[0021] According to a battery management system provided by the utility model, the demodulator is connected to the debugger via a USB to serial port.

[0022] According to a battery management system provided by the utility model, the communication mode of the wireless transmission circuit matches the communication mode of the test end.

[0023] In a second aspect, the utility model also protects a battery pack, including a battery management system as described in any one of the above items.

[0024] In a third aspect, the utility model also protects a vehicle, including the battery pack as described above.

[0025] The utility model provides a battery management system, a battery pack and a vehicle. The battery management system includes: a micro control unit, a joint test working group and a wireless transmission circuit; the micro control unit, the joint test working group and the wireless transmission circuit are integrated and arranged inside a shell of the battery management system; the micro control unit is connected to the joint test working group, the joint test working group is also connected to the wireless transmission circuit, and the wireless transmission circuit is also connected to a test end; the wireless transmission circuit is used to establish wireless communication between the micro control unit and the test end through the joint test working group, and the test end debugs the micro control unit through wireless transmission. Since the wireless transmission circuit is arranged inside the shell and the wireless transmission circuit communicates with the test end through wireless means, when the test end debugs the control unit, there is no need to unpack and disassemble the vehicle, which saves labor costs and time costs and effectively improves debugging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a structural schematic diagram of a battery management system provided by an embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the principle of the SOC radio frequency chip provided by the utility model;

[0029] Figure 3 The utility model provides Figure 2 The principle diagram of the corresponding test end;

[0030] Figure 4 It is a principle schematic diagram of the antenna module provided by the utility model;

[0031] Figure 5 The utility model provides Figure 4 Schematic diagram of the corresponding test end.

[0032] Reference numerals:

[0033] 1. Battery management system; 11. Micro control unit; 12. Joint test working group; 13. Wireless transmission circuit; 131. SOC radio frequency chip; 132. Controller; 133. Wireless communication module; 134. Antenna module; 2. Test end; 21. Demodulator; 22. Debugger; 23. Terminal. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Combine the following Figure 1-Figure 5 The utility model describes a battery management system, a battery pack and a vehicle.

[0036] Figure 1 It is a structural schematic diagram of a battery management system provided by an embodiment of the utility model.

[0037] like Figure 1 As shown, a battery management system 1 provided in this embodiment includes: a microcontroller unit 11, a joint test working group 12 and a wireless transmission circuit 13; the microcontroller unit 11, the joint test working group 12 and the wireless transmission circuit 13 are integrated inside the shell of the battery management system 1; the microcontroller unit 11 is connected to the joint test working group 12, the joint test working group 12 is also connected to the wireless transmission circuit 13, and the wireless transmission circuit 13 is also connected to the test terminal 2; the wireless transmission circuit 13 is used to establish wireless communication between the microcontroller unit 11 and the test terminal 2 through the joint test working group 12, and the test terminal 2 debugs the microcontroller unit 11 through wireless transmission.

[0038] In a specific implementation process, the microcontroller unit 11 (MCU) is inside the BMS board and is the brain of the BMS. It runs all the programs of the BMS, is used to calculate the battery status, and is also an object that needs to realize remote simulation, remote debugging and remote flashing. The joint test working group 12 (Joint Test Action Group, JTAG interface) is a standard interface for MCU debugging, simulation, and flashing. By establishing a connection with the JTAG interface, the debugging of the MCU can be realized. Therefore, a wireless transmission circuit 13 is used to establish a connection with the JTAG interface. At the same time, the MCU, the JTAG interface and the wireless transmission circuit are all arranged inside the shell of the BMS, so there is no need to perform operations such as unpacking during debugging. The wireless transmission circuit 13 can be an integrated module, that is, the wireless transmission circuit 13 can be directly connected to the JTAG interface, and the operation is also convenient. The wireless transmission circuit 13 is matched with the test terminal 2, that is, the test terminal 2 also has a wireless transmission interface, so that the test terminal 2 can establish a wireless communication connection with the wireless transmission circuit 13 of the BMS, and complete the monitoring and debugging of the BMS in real time.

[0039] The specific operation flow may be that the test end 2 first establishes a communication connection with the wireless transmission circuit 13, so that the test end 2 can receive the detection result signal of the BMS and send a debugging signal to the BMS. Then, when the MCU needs to be debugged or flashed, the operator sends the corresponding debugging or flashing instruction through the test end 2, which is sent to the MCU through the wireless transmission circuit 13 for debugging or flashing. After the flashing is completed, a completion signal is returned to the test end 2, thereby completing the debugging and flashing of the MCU.

[0040] Since the debugging and flashing process of the test terminal 2 is implemented based on the wireless transmission circuit 13, there is no need to unpack and dismantle the vehicle, which effectively saves time and labor costs and effectively improves the efficiency of debugging and flashing. By integrating the wireless transmission circuit 13 into the BMS shell, the stability and practicality of the wireless transmission circuit can also be guaranteed.

[0041] Further, on the basis of the above embodiment, the wireless transmission circuit 13 in this embodiment includes: a SOC radio frequency chip 131; the SOC radio frequency chip 131 is connected to the joint test working group 12, and the SOC radio frequency chip is also connected to the test end 2 by radio frequency communication; the SOC radio frequency chip 131 is used to establish wireless data communication between the micro control unit 11 and the test end 2. Among them, the SOC radio frequency chip 131 includes: a mode selection pin, a clock pin, a data input pin and a data output line pin; the mode selection pin is connected to the TMS line of the joint test working group 12, the clock pin is connected to the TCK line of the joint test working group 12, the data input pin is connected to the TDI line of the joint test working group 12, and the data output pin is connected to the TDO line of the joint test working group 12.

[0042] Figure 2 This is a schematic diagram of the principle of the SOC radio frequency chip provided by the utility model. Figure 3 The utility model provides Figure 2 Schematic diagram of the corresponding test end.

[0043] SOC RF chip 131 (System on Chip) is also called system-level chip, which can process digital signals, analog signals and RF signals. The RF chip encodes the information to be transmitted and transmits it to the transmission (TX) carrier signal through modulation technology, uses a suitable channel for data transmission, and the receiving end parses the original information required from the carrier signal through demodulation. In the transmission process, amplifiers with different DB can be selected to increase the transmission distance and the ability to penetrate the medium. The filter inside the RF chip can well avoid the noise generated during the transmission process and ensure the accuracy of the data.

[0044] like Figure 2 As shown, the XL2401C high-performance, low-power SOC integrated wireless transceiver RF chip can be used. The chip works in the 2.400-2.483GHz world-wide ISM frequency band, integrates RF transceiver, frequency receiver, crystal oscillator, modem and other functional modules, and supports one-to-many networking and communication mode with ACK. The transmission output power, working channel and communication data rate can be configured, and the communication is connected to the MCU through the four JTAG interfaces of TDI, TDO, TCK and TMS, and then the on-board antenna is connected to the RF end and grounded at one end for wireless transmission communication.

[0045] The SOC radio frequency chip encodes the information to be transmitted into the carrier signal through the transmitter (TX) through modulation technology (amplitude modulation AM, frequency modulation FM, phase modulation PM), uses a signal amplifier to amplify the power of the signal to ensure the accuracy and integrity of the signal during the transmission process, and uses a filter setting at the receiving end to allow the signal frequency to filter the noise generated by propagation in the medium, improve the signal-to-noise ratio to ensure the correctness of subsequent analysis, and finally demodulates the received signal, extracts the original data sent and transmits it to the modem, completing the conversion of electrical signals to digital signals. The modem then sends the corresponding command signal in the debugger 22 and transmits it back to the circuit board in the same way to realize wireless control and debugging of the MCU.

[0046] It uses SOC RF chip 131, which has a wide coverage range and strong penetration performance. It can easily pass through the metal shell of the circuit board to avoid signal loss; the number of concurrency is high, which can meet the data transmission of 14 PINs of the JTAG port; the transmission rate is high, and the maximum rate has reached 6.928Ghz, which can meet the data interaction during chip debugging; the security performance is high, WiFi can support AES and TKIP hybrid encryption, which can effectively ensure the security of communication.

[0047] Figure 3 The schematic diagram of the test end in the middle matches the BMS, and can quickly and accurately complete the data interaction between the test end 2 and the MCU.

[0048] Figure 4 It is a principle schematic diagram of the antenna module provided by the utility model. Figure 5 The utility model provides Figure 4 Schematic diagram of the corresponding test end.

[0049] like Figure 4 As shown, the wireless transmission circuit 13 in this embodiment includes: a controller 132, a wireless communication module 133 and an antenna module 134; the controller 132 is connected to the joint test working group 12, the wireless communication module 133 is connected to the controller 132 for communication, the antenna module 134 is connected to the wireless communication module 133 for communication, and the antenna module 134 is also connected to the test end 2 for wireless communication; the controller 132 is used to establish a connection between the wireless communication module 133 and the antenna module 134 and the joint test working group 12; the wireless communication module 133 and the antenna module 134 are used to establish wireless data communication between the test end 2 and the micro control unit 11. The controller 132 is connected to the TMS line, TCK line, TDI line and TDO line of the joint test working group 12 respectively.

[0050] Specifically, the controller 132 can be any single-chip microcomputer that conforms to the JTAG protocol through the JTAG interface. A 16-bit, 32-bit, or 64-bit single-chip microcomputer can be selected based on the application. Any main frequency can be selected based on the simulation debugging rate. The higher the main frequency, the faster the running speed. Figure 4 The connection relationship between the controller 132 and the JTAG interface and the connection relationship between the control chip can be clearly understood. The wireless communication module 133 can select CC2642. To ensure the level matching with the single-chip microcomputer, select TXB0104QRUTRQ1 as the level conversion IC to realize the SPI communication between the controller 132 and CC2642 and realize the signal flow. The antenna module 134 can select CC2590 to realize the wireless transmission of the signal, which can not only cooperate well with the wireless communication module 133, but also ensure the efficiency of wireless transmission.

[0051] Among them, the controller 132, wireless communication module 133 and antenna module 134 on the BMS side correspond to the antenna module 134, wireless communication module 133 and controller 132 on the test side 2, and together they realize sending the debugging signal of the test side 2 to the MCU for debugging and flashing via wireless transmission.

[0052] The debugging process is that the test end 2 establishes a communication connection with the antenna module 134, wireless communication module 133 and controller 132 of the BMS end through its own controller 132, wireless communication module 133 and antenna module 134, and then sends a debugging signal. The debugging signal is input to the MCU through the antenna module 134, wireless communication module 133 and controller 132 of the BMS via wireless transmission to complete the debugging of the MCU. After the debugging is completed, the debugging completion signal passes through the controller 132, wireless communication module 133 and antenna module 134 of the BMS in sequence and enters the antenna module 134, wireless communication module 133 and controller 132 of the test end 2, and then is fed back to the debugging terminal 23 to complete all debugging operations.

[0053] Among them, the wireless communication mode of the SOC radio frequency chip 131 and the wireless communication mode corresponding to the antenna module 134 are both for realizing remote wireless data transmission between the BMS end and the test end 2, so as to ensure the efficiency of debugging and flashing.

[0054] Furthermore, in this embodiment, the test end 2 includes: a demodulator 21, a debugger 22 and a terminal 23; the demodulator 21 is wirelessly connected to the wireless transmission circuit, the debugger 22 is connected to the demodulator 21, and the debugger 22 is also connected to the terminal 23; the demodulator 21 is used to demodulate the signal of the wireless transmission circuit, and the terminal 23 is used to send the debugging signal of the debugger 22 to the micro control unit 11 through the demodulator 21 for remote debugging. Among them, the demodulator 21 is connected to the debugger 22 via a USB to serial port.

[0055] Specifically, the workflow may be that the demodulator 21 analyzes the received wireless signal and then transmits it to the debugger 22. The debugger 22 connects to the wireless signal conditioner via the serial port or JTAG to remotely debug the MCU of the vehicle-side BMS, update the program, simulate functions, debug bugs, read back and record data. The terminal 23 installs the debugging interface of the software debugger 22, which can realize remote debugging, program update, function simulation, and bug debugging of the MCU.

[0056] The main function of the demodulator 21 is to realize the mutual conversion between the terminal 23 and the MCU signal, and to ensure the stability and accuracy of the signal transmission such as the debugging signal. The debugger 22 is mainly used for debugging, and the terminal 23 is the display interface of the debugger 22, through which the debugger 22 is controlled.

[0057] The overall workflow can be: the MCU of the BMS sends out an operation status indication signal, and then the remote test terminal 2 detects whether the status indication signal is normal. If it is normal, it maintains a continuous monitoring state and records data. If the operation status indication signal is abnormal, an abnormal alarm prompt is issued, and remote debugging is started. The debugger 22 is started through the terminal 23, and the MCU is remotely debugged and the program is updated by wireless communication to ensure the normal operation of the MCU.

[0058] The utility model effectively solves the problem of dismantling the vehicle and unpacking the circuit board after debugging and loading. The use of wireless control chips will greatly reduce the waste of manpower and material resources, and can meet the requirements of vehicle debugging at any time, no longer limited by the site and tools. In addition, this method can also monitor the operation of the vehicle in real time to ensure the safety of vehicle functions.

[0059] Based on the same general utility model concept, the present utility model also protects a battery pack, including the battery management system of any of the above embodiments.

[0060] Based on the same general utility model concept, the present utility model also protects a vehicle including the battery pack of the above embodiment.

[0061] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0062] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A battery management system, characterized in that: include: Microcontrol units, joint test workgroups and wireless transmission circuits; The micro control unit, the joint test working group and the wireless transmission circuit are integrated and arranged inside the housing of the battery management system; The micro control unit is connected to the joint test working group, the joint test working group is also connected to the wireless transmission circuit, and the wireless transmission circuit is also connected to the test end; The wireless transmission circuit is used to establish wireless communication between the micro control unit and the test end through the joint test working group, and the test end debugs the micro control unit through wireless transmission.

2. The battery management system according to claim 1, characterized in that: The wireless transmission circuit includes: a SOC radio frequency chip; The SOC radio frequency chip is connected to the joint test working group, and the SOC radio frequency chip is also connected to the test end in a radio frequency communication manner; The SOC radio frequency chip is used to establish wireless data communication between the micro control unit and the test end.

3. The battery management system according to claim 2, characterized in that: The SOC radio frequency chip includes: a mode selection pin, a clock pin, a data input pin and a data output line pin; The mode selection pin is connected to the TMS line of the joint test working group, the clock pin is connected to the TCK line of the joint test working group, the data input pin is connected to the TDI line of the joint test working group, and the data output pin is connected to the TDO line of the joint test working group.

4. The battery management system according to claim 1, characterized in that: The wireless transmission circuit includes: a controller, a wireless communication module and an antenna module; The controller is connected to the joint test working group, the wireless communication module is connected to the controller for communication, the antenna module is connected to the wireless communication module for communication, and the antenna module is also connected to the test end for wireless communication; The controller is used to establish a connection between the wireless communication module and the antenna module and the joint test working group; the wireless communication module and the antenna module are used to establish wireless data communication between the test end and the micro control unit.

5. The battery management system according to claim 4, characterized in that: The controller is respectively connected to the TMS line, TCK line, TDI line and TDO line of the joint test working group.

6. The battery management system according to claim 1, characterized in that: The test end includes: a demodulator, a debugger and a terminal; The demodulator is wirelessly connected to the wireless transmission circuit, the debugger is connected to the demodulator, and the debugger is also connected to the terminal; The demodulator is used to demodulate the signal of the wireless transmission circuit, and the terminal is used to send the debugging signal of the debugger to the micro control unit through the demodulator for remote debugging.

7. The battery management system according to claim 6, characterized in that: The demodulator is connected to the debugger via a USB to serial port.

8. The battery management system according to any one of claims 1 to 7, characterized in that: The communication mode of the wireless transmission circuit matches the communication mode of the test end.

9. A battery pack, characterized in that: Comprising a battery management system as described in any one of claims 1-5.

10. A vehicle, characterized in that: Comprising the battery pack as claimed in claim 9.

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