CCS assembly and battery module

Abstract

The utility model discloses a CCS assembly and a battery module, the CCS assembly is used for being electrically connected with a battery cell, the CCS assembly is arranged on one side of a pole of the battery cell, the CCS assembly comprises a wire harness plate and an electric connection assembly, one side, close to the battery cell, of the wire harness plate along a Z direction is provided with a mounting groove assembly, and the electric connection assembly is detachably accommodated in the mounting groove assembly. According to the utility model, the electric connection assembly is more convenient to mount and dismount, and is convenient to mount, produce and maintain.

Description

Technical Field

[0001] This application relates to the technical field of square lithium batteries, and particularly relates to a CCS assembly and a battery module. Background Art

[0002] The assembly of the battery module includes bar pieces, wire harness boards, FPC (flexible printed circuit boards), etc. Among them, the installation method of the bar piece and the wire harness board is generally fixed by buckles or rivet posts; there are also other methods such as hot pressing, integrating the bar piece and the FPC into the assembly. Essentially, it is the wire harness board that fixes the bar piece and the FPC, such as hot riveting, etc. Once installed, it cannot be disassembled, which is very inconvenient during production. Therefore, the present utility model proposes a CCS assembly and a battery module. Summary of the Utility Model

[0003] The embodiments of this application provide a CCS assembly and a battery module, enabling convenient installation, production, and maintenance.

[0004] In the first aspect of this application, a CCS assembly is provided for electrically connecting with an electric core. The CCS assembly is disposed on one side of the pole post of the electric core and includes: a wire harness board and an electrical connection component;

[0005] An installation groove assembly is provided on the side of the wire harness board close to the electric core along the Z direction, and the electrical connection component is detachably accommodated in the installation groove assembly.

[0006] Optionally, the electrical connection component includes a plurality of bar pieces and a plurality of output busbars;

[0007] The installation groove assembly includes a first installation groove for accommodating the bar piece and a second installation groove for accommodating the output busbar.

[0008] Optionally, elastic limiters are provided on the side walls of the first installation groove and the second installation groove for limiting the electrical connection component along the Z direction.

[0009] Optionally, the elastic limiter includes an elastic strip;

[0010] The elastic strips are respectively arranged in the grooves on the two opposite side walls of the installation groove assembly. The two ends of the elastic strip along the X direction are respectively connected to the left and right groove walls of the groove, and there are gaps between the elastic strip and the groove along the Y direction and between the elastic strip and the inner bottom surface of the groove along the Z direction.

[0011] Optionally, the elastic strip has a curved profile, and a gradually protruding curved structure is formed on the side of the middle of the elastic strip away from the groove along the Y direction.

[0012] Optionally, the elastic limiter is integrally formed with the wire harness board.

[0013] The second aspect of the present application provides a battery module, including: battery cells, side plates, and the above-mentioned CCS assembly;

[0014] The wire harness board is arranged on one side of the pole posts of the battery cells;

[0015] A plurality of the battery cells are arranged in an array along the X direction to form a battery pack. Two of the side plates are respectively installed on both sides of the battery pack along the Y direction and are connected to the wire harness board to limit and press-fit the wire harness board on the top of the battery cells.

[0016] Optionally, the side plate includes a plate body, a first extension plate and a second extension plate that are angularly connected to the plate body. The first extension plate and the second extension plate are relatively spaced apart and respectively abut against the battery pack, and a limiting cavity for limiting the wire harness board is formed in the side edge of the first extension plate along the X direction.

[0017] Optionally, stepped clamping portions are provided on both sides of the wire harness board along the Y direction. The clamping portions are inserted into the limiting cavity so that the wire harness board is connected between the first extension plates of the two side plates and abuts against the battery pack.

[0018] Optionally, the first extension plate is further provided with a bolt installation cavity for increasing the fixing points;

[0019] A plurality of bolt fixing holes are formed in the upper surface of the first extension plate;

[0020] The plurality of bolt fixing holes communicate with the bolt installation cavity.

[0021] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages: By providing an installation groove assembly for accommodating the electrical connection components on the lower surface of the wire harness board in this CCS assembly, and the electrical connection components are detachably connected to the installation groove assembly, the installation and disassembly of the electrical connection components are made more convenient, facilitating installation production and maintenance. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the battery module in the embodiment of the present application;

[0023] Figure 2 It is a front view of the battery module in the embodiment of the present application;

[0024] Figure 3 It is Figure 2 a detailed enlarged view of part A in

[0025] Figure 4 It is a schematic structural diagram of the side plate in the embodiment of the present application;

[0026] Figure 5 It is a schematic structural diagram of the CCS assembly in the embodiment of the present application;

[0027] Figure 6 It is a bottom view of the CCS assembly in the embodiment of the present application;

[0028] Figure 7 It is a bottom view of the wiring harness board in the embodiment of the present application;

[0029] Figure 8 It is a schematic structural diagram of the first installation groove, through hole and elastic strip in the embodiment of the present application;

[0030] Among them, the reference numerals are:

[0031] 1 - wiring harness board, 11 - first installation groove, 12 - through hole, 13 - second installation groove, 14 - elastic strip, 2 - side plate, 21 - bolt installation cavity, 22 - bolt fixing hole, 23 - limiting cavity, 3 - battery cell, 4 - output busbar, 5 - tab. Detailed implementation manners

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0033] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] Unless otherwise clearly specified and limited, the terms "installation", "connection", "connected" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0035] The present application provides an embodiment of a CCS assembly. For details, please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 .

[0036] The CCS assembly in this embodiment is used for electrically connecting to the battery cell 3. The CCS assembly is disposed on one side of the pole post of the battery cell 3. The CCS assembly includes: a wiring harness board 1 and an electrical connection component; an installation groove assembly is provided on the side of the wiring harness board 1 close to the battery cell 3 along the Z direction, and the electrical connection component is detachably received in the installation groove assembly.

[0037] It should be noted that: in this CCS assembly, an installation groove assembly for accommodating the electrical connection component is provided on the lower surface of the wiring harness board 1, and the electrical connection component is detachably connected to the installation groove assembly, so that the installation and disassembly of the electrical connection component are more convenient, facilitating installation production and maintenance.

[0038] The above is the first embodiment of a CCS assembly provided by the embodiment of the present application. The following is the second embodiment of a CCS assembly provided by the embodiment of the present application. For details, please refer to Figures 1 to 8 .

[0039] The CCS assembly in this embodiment includes: a wiring harness board 1 and an electrical connection component; an installation groove assembly is provided on the side of the wiring harness board 1 close to the battery cell 3 along the Z direction (i.e., the lower surface of the wiring harness board 1), and the electrical connection component is detachably received in the installation groove assembly.

[0040] The electrical connection component includes a plurality of busbars 5 and a plurality of output busbars 4; the installation groove assembly includes a first installation groove 11 for accommodating the busbars 5 and a second installation groove 13 for accommodating the output busbars 4. Specifically, the number of the second installation grooves 13 is two, and the two second installation grooves 13 are respectively located on both sides of the bottom of the wiring harness board 1. The number of the output busbars 4 is equal to the number of the second installation grooves 13 and they correspond one by one.

[0041] Elastic limiters are provided on the side walls of the first installation groove 11 and the second installation groove 13 for limiting the electrical connection component along the Z direction.

[0042] The elastic limiter includes an elastic strip 14. The elastic strip 14 is respectively disposed in the grooves on the two opposite side walls of the installation groove assembly. The two ends of the elastic strip 14 along the X direction are respectively connected to the left and right groove walls of the groove, and there are gaps between the elastic strip 14 and the groove along the Y direction and between the elastic strip 14 and the inner bottom surface of the groove along the Z direction.

[0043] The elastic strip 14 has a curved profile. The middle part of the elastic strip 14 forms a gradually protruding curved structure away from the groove along the Y direction, or it can be straight, which is not limited herein. Specifically, the elastic strip 14 can be integrally formed with the wiring harness board 1.

[0044] It should be noted that: the protruding position of the elastic strip 14 can be offset horizontally under the action of a horizontal external force and can return to its original shape after the external force is removed.

[0045] The wire harness board 1 can be an integrally injection-molded structure, and a plurality of through holes 12 (i.e., laser welding reserved holes) are opened inside it. Workers can selectively perform laser welding on the bus bar piece 5 through the through holes 12. Specifically, the through holes 12 are respectively opened on the bottom surfaces of the first installation groove 11 and the second installation groove 13.

[0046] This application also provides a battery module, which includes: a battery cell 3, side plates 2, and the above-mentioned CCS assembly; the wire harness board 1 is arranged on one side of the pole column of the battery cell 3; a plurality of battery cells 3 are arranged in an array along the X direction to form a battery pack, and two side plates 2 are respectively installed on both sides of the battery pack along the Y direction and are connected to the wire harness board 1 to limit and press the wire harness board 1 on the top of the battery cell 3.

[0047] It should be noted that: the first installation groove 11 and the second installation groove 13 are below the wire harness board 1, and the movement in the vertical direction is restricted by the elastic limiting member. When the wire harness board 1 is installed on the top of the battery pack, the electrical connection components (bus bar piece 5 and output bus bar 4) are in contact with the pole column of the battery cell 3, and the electrical connection components are tightly attached to the pole column. Therefore, the electrical connection components in this direction do not need to be laser welded, but the wire harness board 1 is restricted on the side plates 2, and it can be firmly fixed, thereby saving processes.

[0048] Specifically, the side plate 2 includes a plate body and a first extension plate and a second extension plate that are angularly connected to the plate body. The first extension plate and the second extension plate are relatively spaced apart and are respectively in contact with the battery pack, and a limiting cavity 23 for limiting the wire harness board 1 is opened along the X direction at the side edge of the first extension plate; stepped clamping portions are provided on both sides of the wire harness board 1 along the Y direction, and the clamping portions are inserted into the limiting cavity 23 so that the wire harness board 1 is connected between the first extension plates of the two side plates 2 and is in contact with the battery pack.

[0049] It should be noted that: when the wire harness board 1 is placed on the top of the battery pack, and then the side plates 2 are buckled on both sides of the battery pack, after being extruded by the tooling, the wire harness board 1 is pressed by the limiting cavities 23 on the two side plates 2 of the battery pack, thereby restricting the movement tendency of the wire harness board 1 in the vertical direction. It can be understood that the limiting cavity 23 on the side plate 2 is theoretically a little lower than the wire harness board 1 so that it can just press the wire harness board 1.

[0050] The first extension plate is also provided with a bolt installation cavity 21 for increasing the fixing point, and the upper surface of the first extension plate is provided with a bolt fixing hole 22, which is connected to the bolt installation cavity 21. Specifically, the number of the bolt fixing holes 22 can be multiple, and the multiple bolt fixing holes 22 are evenly distributed along the length direction of the first extension plate.

[0051] It is understandable that when there is a cooling system or an upper cover on the upper part of the module that needs to be fixed to increase the fulcrum, the bolt fixing holes 22 on the side plate 2 can be used as fixing points.

[0052] In specific implementation, the electrical connection assembly (bar 5 and output bus 4) is first installed on the wiring harness board 1. When installing the electrical connection assembly on the wiring harness board 1, the elastic strip 14 is first compressed and deformed to the maximum size of the installation slot (first installation slot 11 and second installation slot 13), and then the electrical connection assembly is installed in the wiring harness board 1. After the electrical connection assembly is installed, the external force applied to the elastic strip 14 is removed. At this time, the electrical connection assembly is restricted by the elastic strip 14 in the vertical direction, so that the electrical connection assembly will not fall after the wiring harness board 1 is turned over. After the electrical connection assembly is installed on the wiring harness board 1, the wiring harness board 1 is placed upside down on the battery pack, and then the side panel 2 is squeezed and installed to the side of the battery pack. At this time, the wiring harness board 1 is firmly fixed on the top of the battery pack by the limiting cavity 23 on the side panel 2.

[0053] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A CCS assembly, used for electrically connecting to a battery cell, wherein the CCS assembly is arranged on one side of a pole of the battery cell, and is characterized in that: include: Wiring harness boards and electrical connection components; A mounting slot assembly is provided on one side of the wiring harness plate close to the battery core along the Z direction, and the electrical connection assembly is detachably accommodated in the mounting slot assembly.

2. The CCS assembly according to claim 1, characterized in that: The electrical connection assembly includes a plurality of bars and a plurality of output bus bars; The mounting slot assembly includes a first mounting slot for accommodating the bar and a second mounting slot for accommodating the output bus bar.

3. The CCS assembly according to claim 2, characterized in that: Elastic limiting members are provided on the side walls of the first mounting groove and the second mounting groove for limiting the electrical connection assembly along the Z direction.

4. The CCS assembly according to claim 3, characterized in that: The elastic limiting member comprises an elastic strip; The elastic strips are respectively arranged in grooves on two opposite side walls of the mounting groove assembly, and both ends of the elastic strip along the X direction are respectively connected to the left and right groove walls of the groove, and a gap is left between the elastic strip and the groove along the Y direction and between the elastic strip and the inner bottom surface of the groove along the Z direction.

5. The CCS assembly according to claim 4, characterized in that: The elastic strip is in a curved contour shape, and a middle portion of the elastic strip forms a gradually convex curved structure along the Y direction on a side away from the groove.

6. The CCS assembly according to claim 5, characterized in that: The elastic limiting member is integrally formed with the wiring harness plate.

7. A battery module, characterized in that: include: A battery cell, a side plate and a CCS assembly as claimed in any one of claims 1 to 6; The wiring harness plate is arranged on one side of the pole of the battery cell; The multiple battery cells are arranged in an array along the X direction to form a battery pack. The two side plates are respectively installed on both sides of the battery pack along the Y direction and connected to the wiring harness plate to limit and press the wiring harness plate on the top of the battery cells.

8. The battery module according to claim 7, characterized in that: The side plate includes a plate body and a first extension plate and a second extension plate connected to the plate body at an angle. The first extension plate and the second extension plate are arranged relatively spaced apart and respectively abut against the battery pack, and a limiting cavity for limiting the wiring harness plate is opened along the X direction at the side edge of the first extension plate.

9. The battery module according to claim 8, characterized in that: The wiring harness plate is provided with stepped clamping parts on both sides along the Y direction, and the clamping parts are inserted into the limiting cavity so that the wiring harness plate is connected between the first extension plates of the two side plates and abuts against the battery pack.

10. The battery module according to claim 9, characterized in that: The first extension plate is also provided with a bolt installation cavity for adding a fixing point; A plurality of bolt fixing holes are formed on the upper surface of the first extension plate; A plurality of bolt fixing holes are communicated with the bolt installation cavity.

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