Battery pack

Abstract

The utility model provides a battery pack, which comprises a plurality of battery modules, a plurality of battery modules and a plurality of battery packs, wherein each of the battery modules comprises a plurality of single battery cells; the information acquisition assembly is used for connecting the plurality of battery modules so as to acquire information of the battery modules; the information acquisition assembly at least comprises a first information acquisition component and a second information acquisition component, the first information acquisition component is provided with a first plug, and the second information acquisition component is provided with a second socket; and the first plug can be inserted into the second socket to connect the first information acquisition component and the second information acquisition component. The battery pack disclosed by the utility model is convenient to assemble and operate, and the material cost and the assembly cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium electronic batteries, in particular to an information collection component of a battery pack. Background Art

[0002] As a power source for electrical equipment and electric vehicles, battery packs are generally composed of multiple batteries. However, in actual applications, a single battery may have problems such as overvoltage or overpressure due to manufacturing errors or other problems. Therefore, an information collection component is usually provided in the battery pack to collect information about each battery cell and feed it back to the battery management system in the battery pack. The battery management system can monitor each battery in the battery pack based on the information collected by the information collection component.

[0003] Certain data of battery cells can not only characterize the state of battery cells in the battery pack, but also reflect the state of the battery pack as a whole, and are important parameters of the battery management system. In the prior art, the connection carriers between the battery cell collection point and the battery management system mainly include wiring harnesses, FPCs, FFCs, etc. The commonly used connection method is to respectively set information collection components between each battery module in the battery pack, and then each information collection component is connected to the battery management system through a wiring harness. The method of connecting each information collection component in the battery pack to the battery management system through a wiring harness not only makes the overall structure of the battery pack complex, heavy, and costly, but also when the battery pack is placed in a narrow space, the wiring harness is not easy to route, and it is easy to cause difficulties in fixing and installing the wiring harness, resulting in redundancy in the overall structure of the battery pack. Utility Model Content

[0004] The utility model provides a battery pack, which is used to solve the technical problems of limited battery pack space and difficult line collection in the prior art. The battery pack of the utility model comprises: a plurality of battery modules, each of the plurality of battery modules comprises a plurality of single cells; an information collection component, which is used to connect the plurality of battery modules to collect information of the battery modules; the information collection component comprises at least a first information collection component and a second information collection component, the first information collection component is provided with a first plug, the second information collection component is provided with a second socket, the first plug can be inserted into the second socket to connect the first information collection component and the second information collection component.

[0005] Furthermore, a support plate is included, and the second socket can be supported by the support plate, and the support plate is located in the battery module.

[0006] Furthermore, the support plate is detachably connected to the battery module.

[0007] Furthermore, the main body of the information acquisition component is made of a flexible circuit board.

[0008] Furthermore, each of the information collection components is provided with a voltage collection piece and a temperature collection piece.

[0009] Furthermore, a battery management system is also included, and the information collection component can be connected to the battery management system.

[0010] Furthermore, the information collection component further includes a third information collection member, the third information collection member includes a third socket, and the second information collection member further includes a second plug, and the second plug can be inserted into the third socket.

[0011] The information collection component of the battery pack of the utility model adopts a plug-and-socket plug-in mode with the battery management system, which has a simple structure and can improve the space utilization of the battery pack compared to the wiring harness structure of the prior art. At the same time, the information collection components also adopt a plug-and-socket plug-in mode, which reduces the weight of parts such as wiring harnesses and rolling strips, improves the overall energy density of the battery pack, and can reduce the number of connectors, wiring harnesses and rolling strips, and overall reduces the material cost of the battery pack. It can also reduce the material cost of the battery pack, is easy to operate, and can also reduce the overall assembly cost of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of an information collection component in the information collection assembly of the utility model;

[0013] Figure 2 A schematic diagram showing an information collection component in the information collection assembly of the utility model equipped with a socket and a plug;

[0014] Figure 3 This is an exploded schematic diagram of the information collection component and the battery module of the utility model;

[0015] Figure 4 It is a schematic diagram of the information collection component and the battery module in the information collection assembly of the utility model before assembly;

[0016] Figure 5 This is a schematic diagram of the utility model after the new collection component and battery module are assembled. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0018] The battery pack of the present invention includes multiple battery modules, an information collection component and a battery management system. The multiple battery modules of the present invention include a first battery module 101, a second battery module 102, and a third battery module 103; the first battery module 101 includes multiple single cells. The information collection component includes a first information collection component 30, a second information collection component 40, and a third information collection component 50. Specifically. A first information collection component 30 is arranged above the first battery module 101, a second information collection component 40 is arranged on the second battery module 102, and a third information collection component 50 is also arranged on the third battery module 103. Each information collection component is configured to collect information of single cells on each battery module, and the basic structure of each information collection component is similar. This embodiment takes the structure of the second information collection component 40 as an example for detailed description. Figure 1 As shown, the main body 402 of the second information acquisition component 40 is made of a flexible circuit board; and is provided with a voltage acquisition sheet 401 and a temperature acquisition sheet 403, one end of the voltage acquisition sheet 401 and the temperature acquisition sheet 403 can preferably be connected to the main body 402 by welding or the like. Of course, optionally, the voltage acquisition sheet 401 and the temperature acquisition sheet 403 can also be fixed to the flexible circuit board of the main body 402 by other means, and the other ends of the voltage acquisition sheet 401 and the temperature acquisition sheet 403 can also be connected to the battery cell by welding, so as to collect information such as the voltage and temperature on the battery cell, and a second plug 405 is provided at the first longitudinal end of the main body 402, and a second socket 404 is provided at the other longitudinal end of the main body 402; in this embodiment, a support plate 80 is also provided, and the support plate can be installed and fixed in the second module 102, and the second socket 404 is installed on the support plate 80, so that the second socket 404 can be fixed in the second module 102 and stably connected to the second module 102. There is no limit to the connection method between the support plate 80 and the second socket 404, which can be a detachable method of screws and nuts, or a bonding method or a plug method. The support plate 80 provides a stable fixing method for the second socket 404, so that the second information collection component as a whole can be stably set in the second module or in the single cell in the second module.

[0019] like Figure 3-5As shown, the battery pack of the utility model also includes a battery management system 20. In the battery pack of the utility model, the first information acquisition component 30 includes a main body, a voltage acquisition sheet and a temperature acquisition sheet arranged on the main body, and a first plug 305 arranged at the first longitudinal end of the first information acquisition component 30; the second information acquisition component 40 also includes a main body, a voltage acquisition sheet 401 and a temperature acquisition sheet 403 arranged on the main body, a second socket 404 arranged at the first longitudinal end of the first information acquisition component, and a second plug 405 at the other longitudinal end; the third information acquisition component 50 is provided with a third socket 504 at the first longitudinal end and a third plug 505 at the other end; when assembling the battery pack, the first battery module 101, the second battery module 102 and the third battery module 103 are respectively located at specific positions. Then, the first information acquisition component 30 is installed in the first battery module 101; the second information acquisition component 40 is installed in the second battery module 102, and then the third information acquisition component 50 is pressed into the third battery module, and then each support plate 80 is installed in the corresponding battery module, and finally the first plug 305 is inserted into the second socket 404, and then the second plug 405 is inserted into the third socket 504, and finally the third plug is inserted into the battery management system 20, so as to connect the first information acquisition component 30, the second information acquisition component 40, and the third information acquisition component. When the battery pack is working normally, the temperature and pressure of each battery cell in each module can be transmitted to the battery management system 20 through each information acquisition component, and the battery management system can monitor and obtain the data of each battery cell in real time, so as to monitor the working status of the entire battery pack.

[0020] In the present embodiment of the novel battery pack, each module corresponds to an information collection component and is fixedly connected to form an integral module. If the number of modules needs to be increased in the battery pack according to actual needs, each information collection component uses the same plug, and the sockets on each information collection component use the same socket, so that each battery module can be made into a standard module, so that the number of modules can be adjusted according to the actual needs of the battery pack.

[0021] The information collection component of the battery pack of the utility model adopts a plug-and-socket plug-in mode with the battery management system, which has a simple structure and can improve the space utilization of the battery pack compared to the wiring harness structure of the prior art. At the same time, the information collection components also adopt a plug-and-socket plug-in mode, which reduces the weight of parts such as wiring harnesses and rolling strips, improves the overall energy density of the battery pack, and can reduce the number of connectors, wiring harnesses and rolling strips, and overall reduces the material cost of the battery pack. It can also reduce the material cost of the battery pack, is easy to operate, and can also reduce the overall assembly cost of the battery pack.

[0022] It is not a limitation of the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A battery pack, comprising: A plurality of battery modules, each of the plurality of battery modules comprising a plurality of single cells; An information collection component, used for connecting the plurality of battery modules to collect information of the battery modules; It is characterized in that the information collection component includes at least a first information collection component and a second information collection component, the first information collection component is provided with a first plug, the second information collection component is provided with a second socket, and the first plug can be inserted into the second socket to connect the first information collection component and the second information collection component.

2. The battery pack according to claim 1, characterized in that: A support plate is also included, and the second socket can be supported by the support plate, and the support plate is located in the battery module.

3. The battery pack according to claim 2, characterized in that: The support plate is detachably connected to the battery module.

4. The battery pack according to claim 1, wherein: The main body of the information collection component is made of a flexible circuit board.

5. The battery pack according to claim 1, wherein: Each of the information acquisition components is provided with a voltage acquisition sheet and a temperature acquisition sheet.

6. The battery pack according to claim 1, wherein: A battery management system is also included, and the information collection component can be connected to the battery management system.

7. The battery pack according to claim 1, characterized in that: The information collection component further includes a third information collection member, the third information collection member includes a third socket, and the second information collection member further includes a second plug, which can be inserted into the third socket.

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