Battery module integrated busbar and battery module

Abstract

The utility model belongs to the related technical field of battery module especially, and it is related to a battery module integrated busbar and battery module. Through setting up the body, be provided with at least one electric core connecting module, electric core connecting module is provided with first subassembly and second subassembly, first subassembly both sides are provided with at least one second subassembly respectively, and the second subassembly of adjacent electric core connecting module is connected on one side, and second subassembly is provided with at least one connecting area;Connecting area is used for with electric core tab alignment;Plug-in assembly, plug-in assembly sets up in the one end of body, and plug-in assembly and first subassembly are connected. To realize the connection of battery module and BMS through plug-in assembly, thereby avoid the problem of more wiring harness, structure is not compact and wiring harness connection instability caused by wiring harness connection.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery modules, and in particular relates to an integrated busbar for a battery module and a battery module. Background Technology

[0002] The Cells Contact System (CCS) is an indispensable core component of modern energy storage PACKs (especially lithium-ion battery modules). It precisely integrates the conductive busbar (current path), the acquisition harness / FPC (signal path), and the integrated frame / process (structure, insulation, protection) into a single unit. This enables efficient, reliable, and automated cell connection and status monitoring within the battery module, providing an accurate data foundation for the Battery Management System (BMS). It is a crucial link in ensuring the safety, performance, and lifespan of the battery system.

[0003] In existing technologies, battery modules are equipped with integrated busbars to acquire operational data from individual cells and transmit this data to the Battery Management System (BMS) via wired or wireless means for overall control. However, the BMS module is located externally to the battery module and typically requires wiring harnesses for connection. This results in a large footprint for the entire battery module, and the numerous wiring harnesses pose a risk of detachment in unstable operating environments. Utility Model Content

[0004] To address the issues of numerous wiring harnesses, non-compact structure, and unstable wiring connections resulting from the connection between the BMS and battery module, this invention proposes an integrated busbar for the battery module and the battery module itself.

[0005] This utility model solves the above problems through the following technical means: In a first aspect, this utility model proposes a battery module integrated busbar, comprising: The main body is provided with at least one cell connection module. The cell connection module is provided with a first component and a second component. At least one second component is provided on each side of the first component. The second components of adjacent cell connection modules are connected on one side. The second component is provided with at least one connection area. The connection area is used for alignment with the cell electrode tab. A plug-in component is disposed at one end of the body and is connected to the first component.

[0006] The main body includes at least one cell connection module, which comprises a first component and a second component. At least one second component is located on each side of the first component, and adjacent cell connection modules have their second components connected on one side. Each second component has at least one connection area for alignment with the cell tab. A plug-in component is located at one end of the main body and is connected to the first component. This plug-in component connects the battery module and the BMS, avoiding the problems of numerous wire harnesses, loose structure, and unstable wire harness connections associated with traditional wiring harness connections.

[0007] In some implementations, the body and / or plug-in components are configured as flexible circuit board assemblies.

[0008] In some embodiments, the plug-in assembly includes a first part and a second part, the first part being fixed to the first assembly, a first end of the second part being connected to the first part, and a second end of the second part being freely disposed relative to the second end of the first part, such that the second part and the first part are bent relative to each other.

[0009] In some embodiments, the second end is provided with a connector.

[0010] In some implementations, the second components are connected by a blister pack, and a conductive aluminum busbar is provided in the connection area.

[0011] In some implementations, the first component is provided with at least one first alignment slot for connection to a sensor.

[0012] In some embodiments, a nickel sheet is disposed between the first component and the second component.

[0013] In some implementations, the first component is provided with a first positioning hole.

[0014] Secondly, this utility model proposes a battery module, including a battery module integrated busbar as proposed in any of the first aspects, at least one battery cell, and a BMS module; wherein, the battery cell's tabs are connected to the connection area, and the BMS module is connected to the battery module integrated busbar through a plug-in component.

[0015] In some implementations, a second positioning hole is provided on one side of the battery module, and the BMS module is positioned on one side of the battery module through the second positioning hole.

[0016] The present invention relates to an integrated busbar for a battery module and the beneficial effects of the battery module: The main body includes at least one cell connection module, which comprises a first component and a second component. At least one second component is located on each side of the first component, and adjacent cell connection modules have their second components connected on one side. Each second component has at least one connection area for alignment with the cell tab. A plug-in component is located at one end of the main body and is connected to the first component. This plug-in component connects the battery module and the BMS, avoiding the problems of numerous wire harnesses, loose structure, and unstable wire harness connections associated with traditional wiring harness connections. Attached Figure Description

[0017] Figure 1 This is a perspective view of an integrated busbar for a battery module according to the present invention. Figure 2 for Figure 1 Enlarged view of part a; Figure 3 for Figure 1 Enlarged view of part b; Figure 4 This is a perspective view of a battery module according to the present invention.

[0018] Figure label: 1. Body; 11. First component; 111. First alignment groove; 112. First alignment hole; 12. Second component; 121. Connecting area; 122. Blister box; 123. Conductive aluminum busbar; 13. Nickel sheet; 2. Connecting assembly; 21. First part; 22. Second part; 221. First end; 222. Second end; 223. Connector; 3. BMS module; 4. Battery cells.

[0019] Specific implementation methods: It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of this utility model can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the spirit of this utility model and should not be regarded as an improper limitation of this utility model.

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the specific technical solutions of this utility model will be further described in detail below with reference to the accompanying drawings of the embodiments of this utility model. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] In the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] Furthermore, in this embodiment of the invention, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0023] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0024] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0025] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant information in a specific manner.

[0026] Example 1: like Figure 1 As shown, this embodiment proposes a battery module integrated busbar, including: The main body 1 is provided with at least one cell connection module. The cell connection module is provided with a first component 11 and a second component 12. At least one second component 12 is provided on each side of the first component 11. The second components 12 of adjacent cell connection modules are connected on one side. The second component 12 is provided with at least one connection area 121. The connection area 121 is used for alignment with the 4-pole tab of the cell. The plug-in component 2 is disposed at one end of the main body 1 and is connected to the first component 11.

[0027] Specifically, the cell connection modules are used to connect to the cell 4. The number of modules is determined by the number of cells 4 connected. Typically, the cell connection modules are arranged in an array, but this can also be determined by the shape of the connected battery module. Each cell connection module includes a first component 11 and a second component 12. The first component 11 is used for alignment and fixation with the battery box. In some embodiments, it is also aligned and connected with sensors on the battery surface and / or with the connectors of sensors inside the battery. The second component 12 is located on both sides of the first component 11 and is used to connect to the positive and negative tabs of the battery. When multiple cell connection modules are arranged in an array, the second component 12 on one side of adjacent cell connection modules is connected, while the other side is not connected, thus achieving end-to-end connection of multiple cells 4 in the battery module, forming a series circuit. The second component 12 has a connection area 121, which is configured to align the positive and negative tabs of the cell 4.

[0028] It also includes a connection component to replace the wiring harness connection between the BMS and the battery module, avoiding the problems of numerous wiring harnesses, non-compact structure, and unstable wiring harness connections. The connection component can be a circuit board structure, using additional circuit boards, plug-in structures, soldering structures, etc., to achieve non-wiring harness connections.

[0029] The main body 1 includes at least one cell connection module, which comprises a first component 11 and a second component 12. At least one second component 12 is located on each side of the first component 11, and adjacent cell connection modules' second components 12 are connected on one side. Each second component 12 has at least one connection area 121 for alignment with the tab of the cell 4. A plug-in component 2 is located at one end of the main body 1 and is connected to the first component 11. This plug-in component 2 connects the battery module and the BMS, avoiding the problems of numerous wire harnesses, loose structure, and unstable wire harness connections associated with wire harness connections.

[0030] Example 2: Please refer to Figure 1 Then, combined with, for example Figures 2-3 As shown, this embodiment further explains the structure proposed in Embodiment 1: In some preferred embodiments, the body 1 and / or the plug-in component 2 are configured as a flexible circuit board assembly.

[0031] Specifically, the structure of the main body 1 and / or the plug-in component 2 is configured as a flexible circuit board assembly (hereinafter referred to as FPC), which has advantages such as being thin, flexible, customizable in shape, highly integrated (integrating fuses, resistors, etc.), and highly automated in production. By setting the main body 1 as an FPC, the busbar structure can achieve the characteristics of flexible bending and thinness, and setting the plug-in component 2 as an FPC makes the connection between the BMS module 3 and the battery module more flexible. Furthermore, by using the plug-in component 2 as an FPC, the function of circuit transmission can be realized.

[0032] In some embodiments, the plug-in component 2 includes a first part 21 and a second part 22. The first part 21 is fixed to the first component 11, and the first end 221 of the second part 22 is connected to the first part 21. The second part 22 is freely disposed relative to the second end 222 of the first end 221, so that the second part 22 and the first part 21 are bent relative to each other.

[0033] Specifically, the plug-in assembly 2 includes a first part 21 and a second part 22. The first part 21 is used to fix the plug-in assembly 2, which can be done by means of screw alignment and locking, welding, etc. The first end 221 of the second part 22 is connected to the first part 21, which can be fixed by welding or by a bending structure, such as a shaft. Preferably, the first part 21 and the second part 22 are integrally set, and can be set as an FPC structure, so that the second part 22 can be bent relative to the first part 21, so that the second end 222 of the second part 22 can be bent freely, thereby realizing multi-angle connection with external components such as the BMS module 3, thus avoiding the problems of more wires, less compact structure and unstable wire connection caused by using wire harnesses. In some more preferred embodiments, the first part 21 and the second part 22 are arranged perpendicular to each other. By arranging them perpendicularly, the BMS can be attached to one side of the battery module, thereby reducing the problems of more wires, less compact structure and unstable wire connection caused by wire harness connection. At the same time, the way the BMS is attached to one side of the battery module can reduce the overall space occupied by the battery module.

[0034] In some embodiments, the second end 222 is provided with a connector 223.

[0035] Specifically, the connector 223 can be a structure similar to a cable strip socket, used to connect with a BMS module 3, so that the connector 2 can transmit the information acquired by the body 1 to the outside, realizing a function similar to a wire harness, thereby avoiding the problems of too many wire harnesses, loose structure and unstable wire harness connection caused by using a wire harness.

[0036] In some embodiments, the second components 12 are connected by a blister pack 122, and a conductive aluminum busbar 123 is provided in the connection area 121.

[0037] Specifically, a blister pack 122 is provided between adjacent but unconnected second components 12 to improve stability when the main body 1 is set as an FPC and to prevent partial bending. Meanwhile, a conductive aluminum busbar 123 is provided within the connection area 121 to achieve electrical connection to the electrode tabs. Voltage sampling points are provided on the conductive aluminum busbar 123 for collecting data such as voltage from the battery cell 4.

[0038] In some embodiments, the first component 11 is provided with at least one first alignment slot 111, which is used for connection with a sensor.

[0039] Specifically, the first alignment slot 111 is used to connect with sensors such as temperature and air pressure sensors of the battery cell 4, or the first alignment slot 111 is used to provide installation space for the sensor module of the battery cell 4. In some more preferred structures, the first alignment slot 111 can be a connector assembly, which is electrically connected to the sensor to collect the internal pressure and temperature data of the battery cell 4.

[0040] In some embodiments, a nickel sheet 13 is disposed between the first component 11 and the second component 12.

[0041] Specifically, nickel sheet 13 is welded between the first component 11 and the second component 12, and connected to the FPC. Nickel sheet 13 is used to detect the voltage data of the individual battery cells 4, ensuring the health of the battery module. This allows the information of the battery cells 4 obtained through the second component 12 to be transmitted to the first component 11, and the collected data of the battery cells 4 to be transmitted externally through the plug-in component 2.

[0042] In some embodiments, the first component 11 is provided with a first positioning hole.

[0043] Specifically, the first positioning hole allows for the positioning of the entire battery connection module, preventing swaying and misalignment of the battery module integrated busbar in unstable usage scenarios. More specifically, the battery cell 4 can be equipped with a protrusion, which aligns with the first positioning hole for snap-fit ​​fixation. This also ensures rapid positioning and installation stability during the installation of the battery module integrated busbar.

[0044] Example 3: like Figure 4 As shown, this embodiment proposes a battery module, including a battery module integrated busbar as proposed in either Embodiment 1 or Embodiment 2, at least one battery cell 4, and a BMS module 3; wherein, the tabs of the battery cell 4 are connected to the connection area 121, and the BMS module 3 is connected to the battery module integrated busbar through the plug-in component 2.

[0045] Specifically, multiple battery cells 4 are arranged in a configuration such that they are welded or fixed to the battery module as described in either Embodiment 1 or Embodiment 2. Data from the battery cells 4 is collected via the battery module integrated busbar, avoiding the use of excessive wiring harnesses for external connections. This avoids the problems of numerous wiring harnesses, non-compact structure, and unstable wiring connections. Simultaneously, a BMS module 3 is provided. The BMS module 3 monitors and analyzes the voltage, temperature, and internal pressure of the battery cells 4 to provide early warning functionality. The BMS is fixed to the outside of the end plate and is directly electrically connected to the FPC assembly of the integrated busbar via connectors.

[0046] BMS module 3 can be set on one side of the battery module and connected to the battery module integrated busbar via plug-in component 2, thereby reducing the space occupied by the battery module.

[0047] In some more specific embodiments, a second positioning hole is provided on one side of the battery module, and the BMS module 3 is positioned on one side of the battery module through the second positioning hole.

[0048] Specifically, a second positioning hole is provided on one side of the battery module, and the BMS module 3 can also have the same positioning hole. The BMS can be fixed to one side of the battery module by screws passing through the second positioning hole. Alternatively, the second positioning hole can be a positioning protrusion. The BMS module 3 can be configured as a positioning hole using a positioning protrusion structure, with the protrusion and positioning hole aligned and fixed together. This ensures the BMS is fixed to one side of the battery module.

[0049] The serial numbers of the utility model embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A battery module integrated busbar, characterized by, include: The main body (1) is provided with at least one cell connection module. The cell connection module is provided with a first component (11) and a second component (12). At least one second component (12) is provided on each side of the first component (11). The second components (12) of adjacent cell connection modules are connected on one side. The second component (12) is provided with a connection area (121). The connection area (121) is used to align with the electrode tab of the cell (4). as well as A plug-in component (2) is disposed at one end of the body (1) and is connected to the first component (11).

2. The battery module integrated busbar of claim 1, wherein, The body (1) and / or the plug-in assembly (2) are configured as a flexible circuit board.

3. The battery module integrated busbar according to claim 2, characterized in that, The plug-in assembly (2) includes a first part (21) and a second part (22). The first part (21) is fixed to the first assembly (11). The first end (221) of the second part (22) is connected to the first part (21). The second part (22) is freely disposed relative to the second end (222) of the first end (221) so that the second part (22) and the first part (21) are bent relative to each other.

4. The battery module integrated busbar of claim 3, wherein, The second end (222) is provided with a connector (223).

5. The battery module integrated busbar of claim 1, wherein, The second components (12) are connected by a blister pack (122), and a conductive aluminum busbar (123) is provided in the connection area (121).

6. The battery module integrated busbar of claim 1, wherein, The first component (11) is provided with at least one first alignment slot (111) for connection with a sensor.

7. The battery module integrated busbar of claim 1, wherein, A nickel sheet (13) is disposed between the first component (11) and the second component (12).

8. The battery module integrated busbar of claim 1, wherein, The first component (11) is provided with a first positioning hole.

9. A battery module, characterized by Includes the battery module integrated busbar as described in any one of claims 1-8, at least one battery cell (4), and BMS module (3); The electrode of the battery cell (4) is connected to the connection area (121), and the BMS module (3) is connected to the integrated busbar of the battery module through the plug-in component (2).

10. The battery module of claim 9, wherein, The battery module has a second positioning hole on one side, and the BMS module (3) is positioned on one side of the battery module through the second positioning hole.

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