Battery management fusion module, power battery management system and vehicle

Abstract

The utility model discloses a battery management fusion module, a power battery management system and a vehicle. The fusion module comprises a first battery management acquisition board, a second battery management acquisition board, a first connector and a second connector, the first battery management acquisition board comprises a first substrate and a first monitoring module arranged on the first substrate; the second battery management acquisition board comprises a second substrate, and a second monitoring module, a voltage interface and a temperature interface which are arranged on the second substrate; the second monitoring module is connected with the voltage interface and the temperature interface; the first monitoring module is connected with the voltage interface through a first connector, and the first monitoring module is also connected with the temperature interface through a second connector. The first battery management acquisition board and the second battery management acquisition board share one group of voltage interface and temperature interface, so that interfaces and wire harnesses are reduced, a large amount of space is saved, the cost is reduced, and the safety and the reliability are improved on the basis of improving the integration level.

Description

Technical Field

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

[0002] A power battery pack typically includes a battery management system and a power battery pack. The battery management system is used to monitor the operating status of the power battery pack to ensure that it is in normal operation. To ensure the safety and reliability of the power battery pack, the "TJJW 127-2020 Interim Technical Specifications for Lithium-ion Power Battery Testing for Locomotives and EMUs" requires that the battery management system, in addition to the necessary battery management acquisition board, also be equipped with a hardware redundancy board for the battery management acquisition board (referred to as the hardware redundancy board). This allows the hardware redundancy board to continue monitoring the operating status of the power battery pack and ensure the normal operation of the power battery pack if the battery management acquisition board fails, resulting in the inability to monitor the power battery pack properly.

[0003] Currently, the battery management acquisition board and its hardware redundancy board are required to collect voltage and temperature signals from all cells in the power battery pack. Therefore, both the battery management acquisition board and its hardware redundancy board are equipped with voltage and temperature interfaces. The voltage acquisition line from each cell must be connected to the voltage interface of the battery management acquisition board and its hardware redundancy board respectively, and the temperature acquisition line from each cell must be connected to the temperature interface of the battery management acquisition board and its hardware redundancy board respectively. This results in a large number of wiring harnesses within the power battery pack (for example, a power battery pack with 36 cells in series would have at least 100 wiring harnesses), which takes up space, increases costs, and is prone to safety issues.

[0004] like Figure 1 As shown in the figure, CSC (Cell Supervisor Control) represents the battery management acquisition board, and BPU (Battery Protection Unit) represents the hardware redundancy board corresponding to the battery management acquisition board. Both BPU and CSC are equipped with voltage and temperature interfaces. The voltage acquisition lines V0 to Vn derived from each cell in the power battery pack are connected to the voltage interfaces of the BPU and CSC, respectively. The temperature acquisition lines T1 to Tn derived from each cell in the power battery pack are connected to the temperature interface of the BPU, and the temperature acquisition lines t1 to tn derived from each cell in the power battery pack are connected to the temperature interface of the CSC. TGND and tgnd represent the ground wires of the temperature acquisition lines of the BPU and CSC, respectively. Utility Model Content

[0005] The purpose of the present utility model is to provide a battery management fusion module, a power battery management system and a vehicle, so as to solve the problem that the traditional battery management acquisition board and the corresponding hardware redundancy board are both equipped with a voltage acquisition interface and a temperature acquisition interface, which leads to an increase in the number of wiring harnesses leading from the battery pack, an increase in installation space and cost, and a decrease in safety.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions: a battery management fusion module, comprising a first battery management acquisition board and a second battery management acquisition board; the first battery management acquisition board comprises a first substrate and a first monitoring module provided on the first substrate; the second battery management acquisition board comprises a second substrate and a second monitoring module, a voltage interface and a temperature interface provided on the second substrate, the second monitoring module being connected to the voltage interface and the temperature interface; the voltage interface being used to connect to a voltage acquisition line for collecting the voltage of each battery cell in a battery pack, and the temperature interface being used to connect to a temperature acquisition line for collecting the temperature of each battery cell in the battery pack;

[0007] The fusion module further includes a first connector and a second connector. The first monitoring module is connected to the voltage interface via the first connector. The first monitoring module is also connected to the temperature interface via the second connector.

[0008] Furthermore, the first connector and the second connector are both double-ended pin headers.

[0009] Furthermore, the first connector and the second connector are arranged between the first substrate and the second substrate.

[0010] Furthermore, the first battery management acquisition board is provided on the second battery management acquisition board.

[0011] Furthermore, the first monitoring module includes a voltage comparison module and a temperature comparison module, and the second monitoring module includes a voltage acquisition module and a temperature acquisition module; the voltage acquisition module is connected to the voltage interface, and the temperature acquisition module is connected to the temperature interface; the voltage comparison module is connected to the voltage interface through a first connector, and the temperature comparison module is connected to the temperature interface through a second connector.

[0012] Furthermore, a low-voltage interface is provided on the second substrate, and the low-voltage interface is connected to the first substrate through a third connector.

[0013] Based on the same concept, the present invention also provides a power battery management system, which includes the battery management fusion module as described above.

[0014] Based on the same concept, the present invention also provides a vehicle, on which the power battery management system as described above is provided.

[0015] Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] This utility model provides a battery management fusion module. A first battery management acquisition board (i.e., a hardware redundancy board) and a second battery management acquisition board (i.e., a battery management acquisition board) share a set of voltage and temperature interfaces. This reduces the number of interfaces and wiring harnesses, saves significant space, reduces costs, and improves safety and reliability while increasing integration. Furthermore, the first battery management acquisition board can be retained or removed based on product requirements, providing flexible configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a circuit diagram of the battery management acquisition board and its hardware redundancy board in the background technology of the present utility model;

[0020] Figure 2 This is a circuit diagram of the battery management fusion module in an embodiment of the present utility model;

[0021] Figure 3 This is a three-dimensional diagram of the battery management fusion module in the embodiment of the present utility model;

[0022] Figure 4 It is a top view of the battery management fusion module in an embodiment of the present utility model;

[0023] Figure 5 It is a side view of the battery management fusion module in an embodiment of the present utility model.

[0024] Explanation of the reference numerals: 1-first substrate, 2-second substrate, 3-voltage interface, 4-temperature interface, 5-low voltage interface, 6-first connector, 7-second connector, 8-third connector. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] The following specific embodiments are used to describe the technical solution of the present application in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0027] like Figure 2 As shown, a battery management fusion module provided by an embodiment of the present invention includes a first battery management acquisition board (i.e., a hardware redundant board), a second battery management acquisition board, a first connector 6 and a second connector 7; the first battery management acquisition board includes a first substrate 1 and a first monitoring module provided on the first substrate 1; the second battery management acquisition board includes a second substrate 2 and a second monitoring module provided on the second substrate 2, a voltage interface 3 and a temperature interface 4, and the second monitoring module is connected to the voltage interface 3 and the temperature interface 4; the first monitoring module is connected to the voltage interface 3 through the first connector 6, and the first monitoring module is also connected to the temperature interface 4 through the second connector 7.

[0028] The first and second battery management acquisition boards share a set of voltage interfaces 3 and temperature interfaces 4. The voltage interfaces 3 are connected to the voltage acquisition lines extending from each battery cell, and the temperature interfaces 4 are connected to the temperature acquisition lines extending from each battery cell. The first battery management acquisition board obtains voltage signals from each battery cell via the voltage interface 3 and first connector 6 on the second substrate 2. It also obtains temperature signals from each battery cell via the temperature interface 4 and second connector 7 on the second substrate 2. Compared to traditional battery management acquisition boards and their redundant hardware, this eliminates one set of voltage interfaces 3 and temperature interfaces 4, and at least one set of voltage acquisition lines. This saves significant space, reduces costs, and improves safety and reliability while increasing integration.

[0029] Since the conventional first battery management acquisition board and the second battery management acquisition board correspond to different temperature monitoring points on each battery cell of the battery pack, that is, the temperature monitoring positions on each battery cell are different, therefore, in a specific embodiment of the present invention, two groups of temperature acquisition lines are retained, such as Figure 2As shown, both groups of temperature acquisition lines are connected to the temperature interface 4. The first monitoring module is connected to one group of temperature acquisition lines T1 to Tn through the second connector 7 and the temperature interface 4. The second monitoring module is connected to the other group of temperature acquisition lines t1 to tn through the temperature interface 4. There is no need to improve the power battery pack, which saves a group of voltage interface 3 and temperature interface 4 and reduces a group of voltage acquisition lines.

[0030] In another specific embodiment of the present invention, only one group of temperature acquisition lines is retained, and this group of temperature acquisition lines is connected to the temperature interface 4. The first monitoring module is connected to the group of temperature acquisition lines through the second connector 7 and the temperature interface 4, and the second monitoring module is also connected to the group of temperature acquisition lines through the temperature interface 4, saving a group of voltage interfaces 3 and temperature interfaces 4, and reducing one group of voltage acquisition lines and one group of temperature acquisition lines.

[0031] In a specific embodiment of the present invention, the first connector 6 and the second connector 7 are both double-ended pin headers and the double-ended pin headers are arranged between the first substrate 1 and the second substrate 2, that is, one end of the double-ended pin header is plugged into the first substrate 1, and the other end of the double-ended pin header is plugged into the second substrate 2. Figure 3 shown.

[0032] In a specific embodiment of the present invention, the first battery management acquisition board is provided on the second battery management acquisition board, such as Figures 3 to 5 shown.

[0033] In a specific embodiment of the present utility model, the first monitoring module includes a voltage comparison module and a temperature comparison module, and the second monitoring module includes a voltage acquisition module and a temperature acquisition module; the voltage acquisition module is connected to the voltage interface 3, and the temperature acquisition module is connected to the temperature interface 4; the voltage comparison module is connected to the voltage interface 3 through the first connector 6, and the temperature comparison module is connected to the temperature interface 4 through the second connector 7.

[0034] The voltage comparison module compares the voltage value collected by voltage interface 3 with the target voltage, and the temperature comparison module compares the temperature value collected by temperature interface 4 with the target temperature. The first battery management acquisition board monitors the voltage and temperature of each battery cell, thus enabling battery pack status monitoring. The voltage acquisition module uploads the received voltage and temperature values, and the temperature acquisition module uploads the received temperature values ​​to facilitate subsequent voltage and temperature determination and processing by the main control module.

[0035] In a specific embodiment of the present invention, a low-voltage interface 5 is further provided on the second substrate 2 , and the low-voltage interface 5 is connected to the first substrate 1 through a third connector 8 .

[0036] A power battery management system provided by an embodiment of the present utility model includes the battery management fusion module in the embodiment of the present application.

[0037] An embodiment of the present invention provides a vehicle, on which the power battery management system according to the embodiment of the present application is provided.

[0038] The above disclosure is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, and they should all be included in the protection scope of the present invention.

Claims

1. A battery management fusion module, comprising a first battery management acquisition board and a second battery management acquisition board; the first battery management acquisition board comprising a first substrate and a first monitoring module disposed on the first substrate; the second battery management acquisition board comprising a second substrate and a second monitoring module, a voltage interface, and a temperature interface disposed on the second substrate, the second monitoring module being connected to the voltage interface and the temperature interface; the voltage interface being connected to a voltage acquisition line for acquiring the voltage of each battery cell in a battery pack, and the temperature interface being connected to a temperature acquisition line for acquiring the temperature of each battery cell in the battery pack; characterized in that: The fusion module further includes a first connector and a second connector. The first monitoring module is connected to the voltage interface via the first connector. The first monitoring module is also connected to the temperature interface via the second connector.

2. The battery management fusion module according to claim 1, characterized in that: The first connector and the second connector are both double-ended pin headers.

3. The battery management fusion module according to claim 1, characterized in that: The first connector and the second connector are disposed between the first substrate and the second substrate.

4. The battery management fusion module according to claim 1, characterized in that: The first battery management acquisition board is arranged on the second battery management acquisition board.

5. The battery management fusion module according to claim 1, characterized in that: The first monitoring module includes a voltage comparison module and a temperature comparison module, and the second monitoring module includes a voltage acquisition module and a temperature acquisition module; the voltage acquisition module is connected to the voltage interface, and the temperature acquisition module is connected to the temperature interface; the voltage comparison module is connected to the voltage interface through a first connector, and the temperature comparison module is connected to the temperature interface through a second connector.

6. The battery management fusion module according to any one of claims 1 to 5, characterized in that: A low-voltage interface is also provided on the second substrate, and the low-voltage interface is connected to the first substrate through a third connector.

7. A power battery management system, characterized in that: The power battery management system includes the battery management fusion module according to any one of claims 1 to 6.

8. A vehicle, characterized in that: The vehicle is provided with a power battery management system as claimed in claim 7.

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