Battery pack and battery cell module structure thereof

Abstract

The utility model provides a battery pack and a battery cell module structure thereof, and the battery cell module structure comprises a first battery cell group and a second battery cell group which are arranged up and down, a first CCS assembly arranged at the side part of the first battery cell group, and a second CCS assembly arranged on the second battery cell group and arranged at the same side as the first CCS assembly, the first CCS assembly comprises a first CCS support, a first FPC board and a first busbar assembly which are arranged on the first CCS support, and a first FPC connector which is arranged on the first CCS support and is connected with the first FPC board, and the second CCS assembly comprises a second CCS support, a second FPC board and a second busbar assembly which are arranged on the second CCS support. And a second FPC connector connected with the second FPC board is arranged on the first CCS bracket. According to the battery cell module structure disclosed by the utility model, the second FPC connector on the second CCS bracket can be arranged on the first CCS bracket, and the position of the second FPC connector is changed, so that the problem that the FPC connector on the lower-layer battery cell module is difficult to connect with the wiring harness is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery modules, and in particular to a cell module structure of a battery pack. The present invention also relates to a battery pack equipped with the structure. Background Art

[0002] The interior space of electric or hybrid vehicles is limited, and their battery packs need to increase the battery capacity as much as possible. To this end, the battery modules in the battery pack are arranged in a vertical stacking manner to increase the battery capacity without increasing the lateral size too much.

[0003] However, during the installation of the battery cell module, after the lower battery cell module is installed on the lower shell inside the battery pack, due to the small space inside the battery pack, there is insufficient space for the wiring harness and the FPC connector on it to connect, and the FPC connector cannot be easily connected to the wiring harness, making the battery pack assembly more difficult. Utility Model Content

[0004] In view of this, the present invention aims to provide a battery cell module structure that can solve the problem of difficulty in assembling a battery pack.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A battery cell module structure includes a first battery cell group and a second battery cell group arranged vertically, a first CCS assembly provided on a side of the first battery cell group, and a second CCS assembly provided on the second battery cell group and arranged on the same side as the first CCS assembly; the first CCS assembly includes a first CCS bracket, a first FPC board and a first busbar assembly provided on the first CCS bracket, and a first FPC connector provided on the first CCS bracket and connected to the first FPC board; the second CCS assembly includes a second CCS bracket, a second FPC board and a second busbar assembly provided on the second CCS bracket, and a second FPC connector connected to the second FPC board provided on the first CCS bracket.

[0007] Furthermore, the first FPC connector and the first CCS bracket are detachably connected; and / or the second FPC connector and the first CCS bracket are detachably connected.

[0008] Furthermore, the first CCS bracket is provided with a first clamping assembly and a second clamping assembly; the first FPC connector is provided on the first CCS bracket through the first clamping assembly, and the second FPC connector is provided on the first CCS bracket through the second clamping assembly.

[0009] Furthermore, the first clamping assembly and the second clamping assembly each include a plurality of clamping columns provided on the first CCS bracket, and each of the clamping columns is surrounded by a clamping slot; the first FPC connector and the second FPC connector are respectively clamped in the corresponding clamping slots.

[0010] Furthermore, the first FPC connector includes a reinforcement plate clamped in the clamping slot, and a connector body provided on the reinforcement plate, the connector body is connected to the first FPC board, and the first FPC board is located outside the reinforcement plate.

[0011] Furthermore, the second FPC board has an extending section extending upward, and the second FPC board and the second FPC connector are connected via the extending section.

[0012] Furthermore, flexible members for electrical isolation are provided between the extension section and the first CCS bracket, and between the extension section and the second CCS bracket.

[0013] Furthermore, the flexible member is made of foam; and / or the extension section is adhesively connected to each of the flexible members, and the first CCS bracket and the second CCS bracket are adhesively connected to the corresponding flexible members.

[0014] Furthermore, a liquid cooling plate is provided between the first battery cell group and the second battery cell group.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] In the battery cell module structure described in the present invention, the first CCS component and the second CCS component are respectively located on the same side, so that the two components can be processed on one side, which not only simplifies wiring and reduces the possibility of connection errors, but also facilitates maintenance and troubleshooting. In addition, the second FPC board on the second battery cell module in the lower layer is connected to the second FPC connector on the first CCS bracket, which greatly increases the connection space of the second FPC connector and facilitates the connection between the second FPC connector and the wiring harness, thereby improving the assembly convenience of the battery pack.

[0017] Among them, the first FPC connector and the second FPC connector are detachably connected to the first CCS bracket, which makes it more convenient to maintain or replace any FPC connector. When the FPC connector fails, the connector can be replaced alone without disassembling the entire CCS assembly or battery module, reducing maintenance costs and time.

[0018] Furthermore, the design of the snap-on assembly allows the first FPC connector and the second FPC connector to be mounted on the first CCS bracket by a simple snap-on action without the use of screws or other fasteners, thereby simplifying the installation process and making disassembly more convenient and quick.

[0019] In addition, the snap-in grooves formed by the snap-in columns have a clear positioning function, which can ensure that the first FPC connector and the second FPC connector are installed in the correct position, and the snap-in grooves formed by multiple snap-in columns can provide multiple support points, making the FPC connectors more stable after installation and not easy to fall off or loosen.

[0020] Another object of the present invention is to provide a battery pack, in which the battery cell module structure as described above is provided.

[0021] The battery pack described in the present invention and the above-mentioned battery module structure have the same beneficial effects as those in the traditional technology, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of the battery cell module structure according to an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A local enlarged schematic diagram of point A;

[0025] Description of reference numerals:

[0026] 1. First battery cell group; 101. First CCS assembly; 1011. First FPC board; 1012. First busbar assembly;

[0027] 102. First FPC connector; 1021. Reinforcement plate; 1022. Connector body;

[0028] 2. Second battery cell group; 201. Second CCS assembly; 2011. Second FPC board; 2012. Second busbar assembly;

[0029] 202. Second FPC connector;

[0030] 3. Snap-on column; 4. Extension section. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0032] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0033] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connection," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] Example 1

[0036] This embodiment relates to a battery cell module structure, which can facilitate battery pack assembly and improve production line capacity.

[0037] In terms of overall structure, Figure 1 and Figure 2 As shown, the cell module structure of this embodiment includes a first cell group 1 and a second cell group 2 arranged vertically, a first CCS assembly 101 arranged on the side of the first cell group 1, and a second CCS assembly 201 arranged on the second cell group 2 on the same side as the first CCS assembly 101.

[0038] In addition, the first CCS assembly 101 includes a first CCS bracket, a first FPC board 1011 (flexible circuit board) and a first bus assembly 1012 provided on the first CCS bracket, and a first FPC connector 102 provided on the first CCS bracket and connected to the first FPC board 1011. The second CCS assembly 201 includes a second CCS bracket, a second FPC board 2011 and a second bus assembly 2012 provided on the second CCS bracket, and the second FPC connector 202 connected to the second FPC board 2011 is provided on the first CCS bracket.

[0039] At this point, the above arrangement allows the first CCS assembly 101 and the second CCS assembly 201 to be located on the same side. This allows both assemblies to be processed on one side, simplifying wiring and reducing the possibility of connection errors. This also facilitates maintenance and troubleshooting. Furthermore, since the first CCS assembly 101 and the second CCS assembly 201 are on the same side, assembly can be performed more efficiently. Furthermore, the second FPC board 2011 on the lower second cell module is connected to the second FPC connector 202 on the first CCS bracket, significantly increasing the space available for the second FPC connector 202 and facilitating its connection to the wiring harness for easier assembly of the battery pack.

[0040] Based on the above overall introduction, in detail, in this embodiment, during specific implementation, the first busbar assembly 1012 is arranged along the length direction of the first CSS bracket and is used for electrical connection between each battery cell in the first battery cell group 1. The second busbar assembly 2012 is arranged along the length direction of the second CSS bracket and is used for electrical connection between each battery cell in the second battery cell group 2. The first busbar assembly 1012 includes a plurality of first busbars arranged at intervals along the length direction of the first CSS bracket. Each first busbar is electrically connected to each battery cell in the corresponding first battery cell group 1, and each first busbar is connected to the first FPC board 1011.

[0041] Similarly, the second busbar assembly 2012 includes a plurality of second busbars arranged at intervals along the length direction of the second CSS bracket. Each second busbar is electrically connected to each battery cell in the corresponding second battery cell group 2, and each second busbar is connected to the second FPC board 2011, ensuring that the current is evenly distributed to each battery cell, avoiding overload or underload of some battery cells, thereby improving the working efficiency of the overall battery module. At the same time, the busbar assembly is arranged along the length direction of the CCS bracket, which can maximize the use of limited space, making the first battery cell group 1 and the second battery cell group 2 more compact and occupying less space.

[0042] At the same time, relevant structural parts not mentioned in the battery cell module structure in this embodiment can refer to the various structures in the battery cell module structure well known to those skilled in the art, and will not be described again here.

[0043] In this embodiment, as a preferred implementation form, see Figure 2 As shown, the first FPC connector 102 and the first CCS bracket are detachably connected, or the second FPC connector 202 and the first CCS bracket are detachably connected. Furthermore, the first FPC connector 102 and the first CCS bracket and the second FPC connector 202 and the first CCS bracket are both detachably connected.

[0044] Furthermore, the first FPC connector 102 and the second FPC connector 202 are detachably connected to the first CCS bracket, making it more convenient to maintain or replace any FPC connector. When an FPC connector fails, the corresponding FPC connector can be replaced separately without disassembling the entire CCS assembly or battery cell module, thereby reducing maintenance costs and time and increasing the flexibility of the battery pack. FPC connectors of different specifications or types can be easily replaced according to different application scenarios or needs without changing the entire CCS assembly or rewiring, thereby reducing scrapping costs and waste of resources.

[0045] Furthermore, in this embodiment, as a preferred implementation form, see Figure 2 As shown, the first CCS bracket is provided with a first clamping assembly and a second clamping assembly, the first FPC connector 102 is provided on the first CCS bracket through the first clamping assembly, and the second FPC connector 202 is provided on the first CCS bracket through the second clamping assembly.

[0046] It can be understood that the design of the snap-on assembly allows the first FPC connector 102 and the second FPC connector 202 to be installed on the first CCS bracket through a simple snap-on action without the use of screws or other fasteners, which simplifies the installation process and makes disassembly more convenient and quick. In addition, the snap-on assembly makes it easy to replace the FPC connector. When the FPC connector is damaged or needs to be replaced, it can be quickly replaced, reducing downtime and maintenance costs.

[0047] And, in this embodiment, as a preferred implementation form, see Figure 2 As shown, the first and second snap-in assemblies each include a plurality of snap-in posts 3 disposed on the first CCS bracket, and each snap-in post 3 is formed with a snap-in slot, into which the first FPC connector 102 and the second FPC connector 202 are snap-into their corresponding snap-in slots. The snap-in slots formed by the snap-in posts 3 provide a clear positioning function, ensuring that the first and second FPC connectors 102, 202 are installed in the correct position. Furthermore, the snap-in slots formed by the plurality of snap-in posts 3 provide multiple support points, making the FPC connectors more stable after installation and less likely to fall off or loosen.

[0048] Specifically, each clamping column 3 is provided with a block-shaped clamping head at one end away from the first CCS bracket. The clamping head extends from one side of the clamping column 3 toward the corresponding FPC connector, and the end face of the clamping head away from the first CCS bracket is gradually inclined toward the corresponding FPC connector. The clamping column 3 can be elastically deformed under the action of external force.

[0049] Furthermore, during installation and removal of the FPC connector, after aligning the FPC connector with the corresponding snap-in slot, pressing the FPC connector causes the inclined surface on the snap-in head to elastically deform the snap-in posts 3 away from the FPC connector. Once the FPC connector is seated in the snap-in slot, the snap-in posts 3 return to their initial state, and the snap-in head securely secures the FPC connector in the slot, completing the installation of the FPC connector. The design of the snap-in posts 3 allows the FPC connector to be installed or removed with a simple "press-and-release" action, without the need for tools. This simplifies the installation and removal process, further improving assembly efficiency and reducing the time required for installers.

[0050] In addition, in this embodiment, as a preferred implementation form, see Figure 2 As shown, the first FPC connector 102 includes a reinforcing plate 1021 that is clamped in the clamping slot, and a connector body 1022 provided on the reinforcing plate 1021 . The connector body 1022 is connected to the first FPC board 1011 , and the first FPC board 1011 is located outside the reinforcing plate 1021 .

[0051] When the FPC connector is connected, the reinforcing plate 1021 on the FPC connector is connected to the clamping column 3, reducing damage to the connector body 1022 during the connection or separation process. When the reinforcing plate 1021 is damaged, the damaged reinforcing plate 1021 can be separated from the connector body 1022, and the connector body 1022 can be placed on a new reinforcing plate 1021, saving costs.

[0052] It should be added that the second FPC connector 202 has the same structure as the first FPC connector 102 , the main difference being that the second FPC connector is connected to the second FPC board 2011 , while the first FPC connector is connected to the first FPC board 1011 .

[0053] And, in this embodiment, as a preferred implementation form, see Figure 1 As shown, the second FPC board 2011 has an upwardly extending extension section 4, and the second FPC board 2011 and the second FPC connector 202 are connected through the extension section 4, and the extension section 4 is located on the outside of the reinforcement plate 1021. The extension section 4 can lead the second FPC connector 202 to a suitable position, making it convenient to place the second FPC connector 202 on the first CCS bracket.

[0054] Among them, in this embodiment, as a preferred implementation form, flexible parts for electrical isolation are provided between the extension section 4 and the first CCS bracket, and between the extension section 4 and the second CCS bracket, which can effectively achieve electrical isolation, prevent short circuit between the extension section 4 of the second FPC board 2011 and the CCS bracket, and improve electrical safety. At the same time, the flexible part also has the function of supporting the extension section 4, so that the extension section 4 can ensure the stability of the extension section 4 during long-term use without additional support.

[0055] Specifically, in this embodiment, as a preferred implementation, the flexible members are made of foam. The extension section 4 is adhesively bonded to each flexible member, and the first and second CCS brackets are adhesively bonded to their corresponding flexible members. By utilizing the foam's excellent insulating properties, short circuits between the extension section 4 and the CCS brackets are effectively prevented, improving electrical safety. The foam's elasticity and support provide stable support, allowing the extension section 4 to remain stable without additional support. Furthermore, the adhesive bonding between the extension section 4 and the foam, and between the foam and the CCS brackets, ensures a tight fit between the components, reducing the risk of poor contact.

[0056] In this embodiment, as a preferred implementation, a liquid cooling plate is provided between the first cell group 1 and the second cell group 2. Positioned between the two cell groups, the liquid cooling plate can more evenly absorb heat from the upper and lower cell groups, ensuring a more uniform heat distribution and reducing performance differences between the two cell groups due to temperature differences. Furthermore, the liquid cooling plate can simultaneously cool the upper and lower cells, improving cooling efficiency, minimizing space consumption, and achieving a compact structure. Furthermore, the refrigeration equipment connected to the liquid cooling plate can refer to the various structures of refrigeration equipment well known to those skilled in the art, and will not be further described here.

[0057] Example 2

[0058] This embodiment designs a battery pack, which is equipped with the battery cell module structure of the first embodiment. By installing the second FPC connector 202 on the second battery cell group 2 on the first CCS bracket on the first battery cell group 1, the battery pack assembly is more convenient, which is conducive to improving production capacity. In addition, the first CCS component 101 and the second CCS component 201 are located on the same side, making the battery pack more convenient and quick when maintenance or inspection is required.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery cell module structure, characterized in that: It includes a first cell group and a second cell group arranged vertically, a first CCS assembly provided on the side of the first cell group, and a second CCS assembly provided on the second cell group and arranged on the same side as the first CCS assembly; The first CCS assembly includes a first CCS bracket, a first FPC board and a first busbar assembly provided on the first CCS bracket, and a first FPC connector provided on the first CCS bracket and connected to the first FPC board; The second CCS assembly includes a second CCS bracket, a second FPC board and a second busbar assembly arranged on the second CCS bracket, and a second FPC connector connected to the second FPC board is arranged on the first CCS bracket.

2. The battery cell module structure according to claim 1, wherein: The first FPC connector and the first CCS bracket are detachably connected; and / or the second FPC connector and the first CCS bracket are detachably connected.

3. The battery cell module structure according to claim 2, wherein: The first CCS bracket is provided with a first clamping assembly and a second clamping assembly; The first FPC connector is mounted on the first CCS bracket via the first clamping assembly, and the second FPC connector is mounted on the first CCS bracket via the second clamping assembly.

4. The battery cell module structure according to claim 3, wherein: The first clamping assembly and the second clamping assembly each include a plurality of clamping posts provided on the first CCS bracket, and each of the clamping posts is surrounded by a clamping groove; The first FPC connector and the second FPC connector are respectively snapped into corresponding snap-in slots.

5. The battery cell module structure according to claim 4, characterized in that: The first FPC connector includes a reinforcing plate clamped in the clamping slot, and a connector body provided on the reinforcing plate. The connector body is connected to the first FPC board, and the first FPC board is located outside the reinforcing plate.

6. The battery cell module structure according to claim 1, characterized in that: The second FPC board has an extending section extending upward, and the second FPC board and the second FPC connector are connected via the extending section.

7. The battery cell module structure according to claim 6, characterized in that: Flexible members for electrical isolation are provided between the extension section and the first CCS bracket, and between the extension section and the second CCS bracket.

8. The battery cell module structure according to claim 7, characterized in that: The flexible member is made of foam; and / or, The extension section is glued to each of the flexible parts, and the first CCS bracket and the second CCS bracket are glued to the corresponding flexible parts.

9. The battery cell module structure according to any one of claims 1 to 8, characterized in that: A liquid cooling plate is provided between the first battery cell group and the second battery cell group.

10. A battery pack, characterized in that: The battery pack is provided with the battery cell module structure according to any one of claims 1 to 9.

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