Battery management controller, power battery system and vehicle

Abstract

The utility model provides a battery management controller, a power battery system and a vehicle, the battery management controller comprises a battery management control circuit, a wireless communication circuit and a PCB card, and the battery management control circuit is used for monitoring the state of a power battery. The wireless communication circuit is electrically connected with the battery management control circuit, the PCB card comprises a first area and a second area, the battery management control circuit is arranged in the first area, and the wireless communication circuit is arranged in the second area. According to the battery management controller provided by the utility model, the wireless communication circuit and the battery management circuit are integrated into one PCB board card, the circuit connection is highly integrated, the fault rate is low, the occupied space is small, and the safety and reliability are higher.

Description

Technical Field

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

[0002] As the power source of rail vehicles, power batteries need to store huge amounts of energy and play a key role in the long-term stable operation of rail vehicles. Rail vehicle equipment has a compact installation space and needs to operate according to the established driving plan, which places high demands on the safety and reliability of the power battery system.

[0003] In the related technology, the power battery system includes a power battery and a battery management system (BMS). In order to realize the monitoring of the battery status by the data transmission terminal, the BMS can be connected to the data transmission terminal through a wireless communication circuit. However, the BMS requires additional installation space and connection harness for the wireless communication circuit, which occupies a large space and has low safety and reliability. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a battery management controller, a power battery system and a vehicle.

[0005] To achieve the above object, the first aspect of the present utility model provides a battery management controller, which is applied to a rail vehicle, and the battery management controller includes:

[0006] Battery management circuit, used to monitor the status of the power battery;

[0007] a wireless communication circuit electrically connected to the battery management control circuit; and

[0008] A PCB board, wherein the PCB board includes a first area and a second area, the battery management control circuit is arranged in the first area, and the wireless communication circuit is arranged in the second area.

[0009] The battery management controller provided by the utility model integrates the wireless communication circuit and the battery management circuit into a PCB board. The BMS does not need to add corresponding mounting structures and connecting harnesses to the wireless communication module. The circuit connection is highly integrated, the failure rate is low, the space occupancy is small, and the safety and reliability are higher.

[0010] In some embodiments, the battery management controller further includes a base, the base includes a bottom plate, and the PCB board is fixedly mounted on the bottom plate.

[0011] In some embodiments, the base also includes a side panel vertically connected to the bottom plate, and the side panel extends to the side of the bottom plate facing the PCB board, and a first interface and / or a second interface are provided on the side panel; wherein the first interface is electrically connected to the battery management control circuit, and is used to provide power to the battery management control circuit and enable the battery management control circuit to communicate with an external circuit; the second interface is electrically connected to the wireless communication circuit, and is used to provide power to the wireless communication circuit and enable the wireless communication circuit to communicate with an external circuit.

[0012] In some embodiments, the battery management controller also includes an upper cover, which together with the bottom plate and the side plate form a first accommodation space, and the PCB board card provided with the battery management control circuit and the wireless communication circuit is accommodated in the first accommodation space.

[0013] In some embodiments, the upper cover is provided with an installation through hole, and the battery management controller further includes a waterproof breathable valve, and the waterproof breathable valve is installed in the installation through hole.

[0014] In some embodiments, the mounting through hole is directly opposite to the second area of ​​the PCB board, so that the wireless communication circuit can wirelessly communicate with the data transmission terminal through the waterproof and breathable valve.

[0015] In some embodiments, the wireless communication circuit includes an antenna, and the wireless communication circuit establishes a wireless communication connection with a data transmission terminal through the antenna.

[0016] In some embodiments, the two regions are suitable for being arranged on the outside of the housing of the power battery.

[0017] A second aspect of the present invention further provides a power battery system, which includes the battery management controller described in the first aspect.

[0018] The power battery system provided by the utility model integrates the wireless communication circuit and the battery management circuit into a PCB board. The BMS does not need to add corresponding mounting structures and connecting harnesses to the wireless communication module. The circuit connection is highly integrated, the failure rate is low, the space occupancy is small, and the safety and reliability are higher.

[0019] The third aspect of the present invention also provides a vehicle, which includes the power battery system described in the second aspect.

[0020] The vehicle provided by the utility model integrates the wireless communication circuit and the battery management circuit into a PCB board. The BMS does not need to add corresponding mounting structures and connecting harnesses to the wireless communication module. The circuit connection is highly integrated, the failure rate is low, the space occupancy is small, and the safety and reliability are higher.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the first structure of the battery management controller provided by the embodiment of the utility model;

[0023] Figure 2 This is a second structural diagram of a battery management controller provided by an embodiment of the utility model;

[0024] Figure 3 yes Figure 2 A cross-sectional schematic diagram of the battery management controller at the waterproof vent position shown;

[0025] Figure 4 It is a schematic diagram of the structure of the power battery provided by the embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a vehicle provided by an embodiment of the utility model.

[0027] The following are the descriptions of the reference numerals:

[0028] Battery Management Controller 100

[0029] Battery management control circuit 11

[0030] Wireless communication circuit 20

[0031] PCB board 10

[0032] Base 12

[0033] Bottom plate 121

[0034] Side Panel 122

[0035] First interface 141

[0036] Second interface 142

[0037] Upper cover 16

[0038] Mounting through hole 161

[0039] Waterproof breathable valve 17

[0040] Power battery 200

[0041] Housing 21

[0042] Integrated panel 211

[0043] Bracket 22, 13

[0044] Fasteners 23, 15

[0045] High voltage positive terminal 26

[0046] High voltage negative terminal 27

[0047] Low voltage positive terminal 24

[0048] Low voltage negative terminal 25

[0049] Maintenance switch 28

[0050] Power battery system 1

[0051] Vehicle 1000

[0052] The following specific implementation manner will illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0054] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] Please also read Figure 1 to Figure 3 , Figure 1 This is a schematic diagram of the first structure of the battery management controller provided by the embodiment of the utility model; Figure 2 This is a second structural diagram of a battery management controller provided by an embodiment of the utility model; Figure 3 yes Figure 2The utility model provides a battery management controller 100, which is applied to rail vehicles and includes a battery management control circuit 11, a wireless communication circuit 20 and a PCB (Printed Circuit Board) card 10.

[0056] The battery management control circuit 11 is used to monitor the status of the power battery 200 .

[0057] The wireless communication circuit 20 is electrically connected to the battery management control circuit 11, and the wireless communication circuit 20 is used to establish a wireless communication connection with a data transmission terminal (not shown in the figure), so that the battery management control circuit 11 can communicate wirelessly with the data transmission terminal through the wireless communication circuit 20.

[0058] The PCB board 10 includes a first area and a second area. The battery management control circuit 11 is disposed in the first area, and the wireless communication circuit 20 is disposed in the second area.

[0059] The battery management controller 100 provided by the utility model is provided with a wireless communication circuit 20 to realize wireless communication between the battery management control circuit 11 and the data transmission terminal. In the related art, the power battery system needs to send the battery data to the vehicle-mounted ECU or the train TCMS, and then the vehicle-mounted ECU or the train TCMS transmits the battery data back to the data transmission terminal. Compared with the related art, the first aspect of the utility model can reduce the number of installed parts and reduce the procurement cost; secondly, due to the reduction of the data transmission link, it can solve the problem of signal reliability affected by harness wear, connector loosening, and EMC electromagnetic interference, and the data transmission timeliness and integrity are higher, which is conducive to improving the intelligence and safety of the power battery system; thirdly, the wireless communication circuit and the battery management circuit are integrated into a PCB board, and the BMS does not need to add the corresponding installation structure and connection harness to the wireless communication module. The circuit connection is highly integrated, the failure rate is low, the space occupancy is small, and the safety and reliability are higher.

[0060] Among them, the battery management controller 100 is also called the battery management system (BMS), which is a key component in the electric vehicle and is mainly responsible for monitoring and managing the status of the battery pack to ensure the safety, efficiency and long-term operation of the battery. Exemplarily, the main functions of the BMS include: battery status monitoring, real-time monitoring of battery voltage, current, temperature and other parameters to evaluate the health of the battery. Charging management, controlling the charging process of the battery, preventing overcharging and overheating, and extending the battery life. Discharge management, controlling the discharge process of the battery, preventing over-discharge, and protecting the battery. Fault diagnosis, detecting abnormal conditions in the battery and electric vehicle system, and providing fault diagnosis information. Balance management, improving overall performance and life by balancing the power of each battery cell in the battery pack. Data recording and communication, recording battery usage data, and exchanging information with other systems of the vehicle (such as the on-board computer) through the communication interface. Thermal management, monitoring battery temperature, and starting the cooling or heating system when necessary to maintain the battery within the optimal operating temperature range. Safety protection, when abnormal conditions are detected, such as battery overheating or voltage abnormality, the BMS can take measures to protect the battery, such as cutting off the power supply or limiting the output. The function of the battery management controller 100 is realized by the battery management control circuit 11. The battery management control circuit 11 may include electronic components such as a control chip, a capacitor, a resistor, and a switch tube.

[0061] In some embodiments, the battery management controller 100 further includes a base 12 , the base 12 includes a bottom plate 121 , and the PCB board 10 is fixedly mounted on the bottom plate 121 .

[0062] In some embodiments, the base 12 also includes a side panel 122 vertically connected to the bottom plate 121, and the side panel 122 extends on the side of the bottom plate 121 facing the PCB board card 10, and the side panel 122 is provided with a first interface 141 and / or a second interface 142.

[0063] The first interface 141 is electrically connected to the battery management control circuit 11, and is used to provide power to the battery management control circuit 11 and to enable the battery management control circuit 11 to communicate with an external circuit. The second interface 142 is electrically connected to the wireless communication circuit 20, and is used to provide power to the wireless communication circuit 20 and to enable the wireless communication circuit 20 to communicate with an external circuit.

[0064] In some embodiments, the battery management controller 100 also includes an upper cover 16, and the upper cover 16, the bottom plate 121, and the side plate 122 together form a first receiving space, and the PCB board 10 provided with the battery management control circuit 11 and the wireless communication circuit 20 is received in the first receiving space.

[0065] In some embodiments, the upper cover 16 is provided with a mounting through hole 161 , and the battery management controller 100 further includes a waterproof breathable valve 17 , and the waterproof breathable valve 17 is installed in the mounting through hole 161 .

[0066] In some embodiments, the mounting through hole 161 is aligned with the second area of ​​the PCB board 10 , so that the wireless communication circuit 20 can wirelessly communicate with the data transmission terminal through the waterproof breathable valve 17 .

[0067] Among them, the waterproof and breathable valve 17 can be made of non-metallic material, which not only has waterproof and breathable functions, but also can provide a clear channel for the wireless communication circuit 20 to transmit wireless signals to the outside. Therefore, while ensuring that the battery management control circuit 11 has good sealing, it can also not affect the signal transmission efficiency of the wireless communication circuit 20.

[0068] In some embodiments, the wireless communication circuit 20 includes an antenna (not shown), and the wireless communication circuit 20 establishes a wireless communication connection with a data transmission terminal through the antenna.

[0069] Furthermore, the wireless communication circuit 20 also includes a communication chip (not shown in the figure) and a first storage unit (not shown in the figure). Exemplarily, the communication chip may include a baseband chip and a radio frequency chip electrically connected to each other, wherein the radio frequency chip is electrically connected to the antenna. The baseband chip is used to synthesize the data signal to be transmitted into a baseband signal when sending a signal, and output the baseband signal to the radio frequency chip, and to receive the baseband signal output by the radio frequency chip when receiving a signal, and decode the baseband signal into a data signal. The radio frequency chip is used to receive or send radio frequency signals through the antenna and to realize mutual conversion between radio frequency signals and baseband signals. The first storage unit is electrically connected to the baseband chip, and is used to store the data received by the baseband chip.

[0070] The battery management controller 100 is applied in a vehicle, the battery management control circuit 11 is used to obtain the operating data of the power battery in the vehicle (for example, including current, voltage, temperature, SOC (State Of Charge) value, etc.), and the wireless communication circuit 20 is used to perform a self-test when the vehicle is powered on at a low voltage, that is, to obtain the operating data of the power battery in the vehicle through the battery management control circuit 11. If the operating data can be successfully obtained, it means that the self-test is successful.

[0071] After the self-test is successful, the wireless communication circuit 20 is also used to send a wireless connection request to the data transmission terminal. When the data transmission terminal receives the wireless connection request and feeds back a connection success instruction to the wireless communication circuit 20, it means that the wireless communication circuit 20 and the data transmission terminal have successfully established a wireless connection.

[0072] After establishing the wireless connection, the data transmission terminal can realize functions such as remote burning, upgrading, rollback, parameter calibration, etc. of the battery management program for the battery management control circuit 11, and implement dynamic monitoring of the health of the power battery and remote intervention of risks / faults when necessary, thereby creating more possibilities for the design and application scenarios of intelligent power battery systems.

[0073] In some embodiments, the wireless communication circuit 20 is used to receive the program to be burned sent by the data transmission terminal, and burn the program to be burned into the battery management control circuit 11.

[0074] Specifically, after establishing the wireless connection, the wireless communication circuit 20 downloads the program to be burned, CAN receiving ID, CAN sending ID, private key, and baud rate information sent by the data transmission terminal to the first storage unit, and then uses the received CAN receiving ID, CAN sending ID, private key, and baud rate information to shake hands with the battery management control circuit 11 to establish a communication connection, and forwards the program to be burned to the battery management control circuit 11 to complete the burning of the program to be burned.

[0075] In one embodiment, the battery management control circuit 11 further includes a second storage unit (not shown in the figure), the second storage unit includes a first storage area and a second storage area, wherein the first storage area is used to store the current version of the battery management program of the battery management control circuit 11, and the second storage area is used to store the historical version of the battery management program of the battery management control circuit 11. The battery management control circuit 11 is used to determine whether there is any program stored in the second storage unit when receiving the program to be burned, and enter the first burning process when it is determined that there is no program in the second storage unit, so as to store the program to be burned in the first storage area, and call the program to be burned for burning. The battery management control circuit 11 is also used to enter the software upgrade process when it is determined that there is a current version of the battery management program in the first storage unit, so as to move the current version of the battery management program to the second storage area, and shift the historical version of the battery management program in the second storage area in sequence according to the burning time, and store the program to be burned in the first storage area, and call the program to be burned for burning. The second storage area may store N historical versions of battery management programs whose burning time is closest to the current moment, and the historical versions of battery management programs before the N historical versions of battery management programs will be cleared. For example, N=3.

[0076] In some embodiments, the wireless communication circuit 20 is used to receive a calibration message sent by the data transmission terminal, and forward the calibration message to the battery management control circuit 11 .

[0077] Specifically, after establishing the wireless connection, the wireless communication circuit 20 is used to receive the calibration message and the corresponding baud rate information sent by the data transmission terminal, and forward the calibration message to the battery management control circuit 11 at the baud rate corresponding to the baud rate information.

[0078] The battery management control circuit 11 is used to feed back a calibration completion message to the wireless communication circuit 20 and restart after completing parameter calibration according to the calibration message.

[0079] The wireless communication circuit 20 forwards the calibration completion message to the data transmission terminal.

[0080] In some embodiments, the battery management control circuit 11 stores at least one historical version of the battery management program. The wireless communication circuit 20 is used to receive a rollback instruction sent by the data transmission terminal, and forward the rollback instruction to the battery management control circuit 11, triggering the battery management control circuit 11 to call the historical version of the battery management program corresponding to the rollback instruction for burning.

[0081] Optionally, each historical version of the battery management program stored in the battery management control circuit 11 has a corresponding version identification number. After establishing a wireless connection, the wireless communication circuit 20 is used to receive a rollback instruction and a version identification number sent by the data transmission terminal, and forward the rollback instruction and the version identification number to the battery management control circuit 11.

[0082] In response to the rollback instruction, the battery management control circuit 11 clears the current version of the battery management program stored in the first storage area, moves the historical version of the battery management program corresponding to the version identification number stored in the second storage area to the first storage area, and calls the historical version of the battery management program corresponding to the version identification number for burning.

[0083] In some embodiments, the battery management controller 100 further includes a bracket 13 and a fastener 15. The fastener 15 is used to fix the base 12 on the bracket 13.

[0084] See also Figure 4 , Figure 4 2 is a schematic diagram of the structure of a power battery provided by an embodiment of the present utility model. In some embodiments, the second area is suitable for being arranged in a power battery 200.

[0085] Specifically, the power battery 200 includes a housing 21 , a battery body (not shown) and a wireless communication circuit 20 .

[0086] The housing 21 forms a second receiving space, and the battery body is received in the second receiving space.

[0087] The second area is suitable for being arranged on the outside of the shell 21 , and the wireless communication circuit 20 is electrically connected to the battery management control circuit 11 and is used for wireless communication with the data transmission terminal, so that the battery management control circuit 11 can wirelessly communicate with the data transmission terminal through the wireless communication circuit 20 .

[0088] In some embodiments, the wireless communication circuit 20 is used to receive the program to be burned sent by the data transmission terminal, and burn the program to be burned into the battery management control circuit 11.

[0089] In some embodiments, the wireless communication circuit 20 is used to receive a calibration message sent by the data transmission terminal, and forward the calibration message to the battery management control circuit 11 .

[0090] In some embodiments, the battery management control circuit 11 stores at least one historical version of the battery management program. The wireless communication circuit 20 is used to receive a rollback instruction sent by the data transmission terminal, and forward the rollback instruction to the battery management control circuit 11, triggering the battery management control circuit 11 to call the historical version of the battery management program corresponding to the rollback instruction for burning.

[0091] In some embodiments, the power battery 200 further includes a high voltage positive terminal 26 , a high voltage negative terminal 27 , a low voltage positive terminal 24 , a low voltage negative terminal 25 , a sampling circuit (not shown) and a maintenance switch 28 .

[0092] Among them, one end of the high-voltage positive terminal 26 is electrically connected to the positive electrode of the power battery, and the other end is used to be electrically connected to the positive electrode of the external circuit. One end of the high-voltage negative terminal 27 is electrically connected to the negative electrode of the power battery, and the other end is used to be electrically connected to the negative electrode of the external circuit. One end of the low-voltage positive terminal 24 and one end of the low-voltage negative terminal 25 are both electrically connected to the wireless communication circuit 20 and the sampling circuit, and the other end of the low-voltage positive terminal 24 and the other end of the low-voltage negative terminal 25 are both connected to the battery management control circuit 11. The low-voltage positive terminal 24 and the low-voltage negative terminal 25 serve as signal transmission paths between the wireless communication circuit 20, the sampling circuit and the battery management control circuit 11.

[0093] The maintenance switch 28 is used to disconnect one end of the high-voltage positive terminal 26 from the positive electrode of the power battery, and / or disconnect one end of the high-voltage negative terminal 27 from the negative electrode of the power battery, so as to cut off the electrical connection between the power battery and the external circuit.

[0094] In some embodiments, the power battery 200 also includes an integrated panel 211, which is arranged on the outside of the shell 21, and the wireless communication circuit 20, the high-voltage positive terminal 26, the high-voltage negative terminal 27, the low-voltage positive terminal 24, the low-voltage negative terminal 25, and the maintenance switch 28 are all arranged on the outside of the integrated panel 211.

[0095] In some embodiments, the power battery 200 further includes a bracket 22 and a fastener 23 , and the fastener 23 is used to fix the housing 21 on the bracket 22 .

[0096] See also Figure 5 , Figure 5The present invention also provides a power battery system 1, wherein the power battery system 1 comprises the battery management controller 100 described in any one of the above embodiments.

[0097] Please refer again Figure 5 The present invention also provides a vehicle 1000, wherein the vehicle 1000 includes the power battery system 1 described above.

[0098] Among them, the vehicle 1000 can be a rail vehicle. It should be noted that rail vehicles need to operate according to the established driving plan. If the rail vehicle cannot operate according to the driving plan due to a power battery failure, it will lead to a series of problems such as reduced operating efficiency, reduced service level, increased safety risks, and difficult operation and maintenance. Therefore, rail vehicles have higher requirements for the safety and reliability of power batteries. The rail vehicle provided by the utility model realizes wireless communication between the battery management control circuit 11 and the data transmission terminal by setting a wireless communication circuit 20, which can remotely monitor the operating status of the power battery in real time and adjust the battery control management strategy in time, thereby greatly improving the safety and reliability of the power battery.

[0099] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery management controller, applied to rail vehicles, characterized in that: The battery management controller comprises: Battery management control circuit, used to monitor the status of the power battery; a wireless communication circuit electrically connected to the battery management control circuit; and A PCB board, wherein the PCB board includes a first area and a second area, the battery management control circuit is arranged in the first area, and the wireless communication circuit is arranged in the second area.

2. The battery management controller according to claim 1, characterized in that: The battery management controller also includes a base, the base includes a bottom plate, and the PCB board is fixedly mounted on the bottom plate.

3. The battery management controller according to claim 2, characterized in that: The base also includes a side panel vertically connected to the bottom plate, and the side panel extends to the side of the bottom plate facing the PCB board, and a first interface and / or a second interface are provided on the side panel; wherein the first interface is electrically connected to the battery management control circuit, and is used to provide power to the battery management control circuit and enable the battery management control circuit to communicate with an external circuit; the second interface is electrically connected to the wireless communication circuit, and is used to provide power to the wireless communication circuit and enable the wireless communication circuit to communicate with an external circuit.

4. The battery management controller according to claim 3, characterized in that: The battery management controller also includes an upper cover, which together with the bottom plate and the side plate form a first receiving space, and the PCB board card provided with the battery management control circuit and the wireless communication circuit is received in the first receiving space.

5. The battery management controller according to claim 4, characterized in that: The upper cover is provided with a mounting through hole, and the battery management controller further comprises a waterproof and breathable valve, and the waterproof and breathable valve is installed in the mounting through hole.

6. The battery management controller according to claim 5, characterized in that: The mounting through hole is directly opposite to the second area of ​​the PCB board, so that the wireless communication circuit can perform wireless communication with the data transmission terminal through the waterproof and breathable valve.

7. The battery management controller according to claim 1, characterized in that: The wireless communication circuit comprises an antenna, and the wireless communication circuit establishes a wireless communication connection with a data transmission terminal via the antenna.

8. The battery management controller according to claim 1, characterized in that: The second area is suitable for being arranged outside the housing of the power battery.

9. A power battery system, characterized in that: It comprises a battery management controller as claimed in any one of claims 1 to 8.

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

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