Busbar support splicing unit and busbar support

Abstract

The utility model provides a busbar support splicing unit and a busbar support, the splicing unit comprises a support body, the support body is configured to be in a long plate shape, and a busbar can be connected to the support body; the connecting parts are fixedly kept at the two ends of the support body in the length direction, each connecting part is provided with a first inserting part and a second inserting part, and the first inserting parts and the second inserting parts are distributed at the two opposite ends of the connecting parts in the mode of being perpendicular to the length direction of the support body; and the first inserting part and the second inserting part are provided with inserting structures which are matched with each other. According to the busbar bracket splicing unit disclosed by the utility model, the number of the busbar bracket splicing units disclosed by the utility model can be flexibly selected according to the number of battery cells in a battery module, and the busbar bracket splicing units are connected end to end to form a busbar bracket so as to adapt to battery modules with different numbers of battery cells.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a busbar bracket splicing unit. At the same time, the utility model also relates to a busbar bracket containing the busbar bracket splicing unit. Background Art

[0002] At present, new energy vehicles are receiving more and more attention from the society, and the cost of electric vehicles is an issue of widespread concern to OEMs, battery manufacturers and consumers. Battery packs are a component that accounts for a relatively high proportion of the cost of electric vehicles, and reducing the cost of battery packs plays an extremely important role.

[0003] The busbar bracket assembly is a high-cost component in the module. The power battery busbar bracket is used to fix the busbar and is set at a specific position in the power battery assembly to ensure the stability and safety of the battery system. The main function of the busbar bracket is to support and fix the busbar so that it can stably transmit electrical energy within the battery system. The design of the busbar bracket must take into account insulation protection to reduce the difficulty of process grouping and make it easy to implement. In addition, the material and structure of the bracket must also have good conductivity and mechanical strength to ensure the stability and safety of power transmission.

[0004] Since the number of cells in modules of different battery packs may be different, in order to adapt to cell modules of different lengths, it is usually necessary to prepare specific bus brackets for modules with different numbers of cells. Modules of different lengths are adapted to different bus brackets. During batch manufacturing, it is necessary to open a variety of molds of different specifications and sizes, which is inconvenient for management and cost saving. Utility Model Content

[0005] In view of this, the utility model aims to provide a busbar bracket splicing unit to splice into a busbar bracket with adjustable length.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A busbar support splicing unit, the splicing unit comprising:

[0008] A support body, the support body is configured as a long plate, and the busbar can be connected to the support body;

[0009] A pair of connecting parts are fixedly retained at both ends of the length direction of the bracket body, and each of the connecting parts is respectively provided with a first plug-in part and a second plug-in part, and the first plug-in part and the second plug-in part are distributed at two opposite ends of the connecting part in a manner perpendicular to the length direction of the bracket body, and the first plug-in part and the second plug-in part have plug-in structures that are compatible with each other.

[0010] Further, the first plug-in portion includes a first plug-in board;

[0011] The second plug-in portion includes a second plug-in board and a position-limiting fitting portion held above the second plug-in board, and a space allowing the first plug-in board to be inserted is formed between the second plug-in board and the position-limiting fitting portion.

[0012] Furthermore, the position-limiting mating portion includes a plurality of plug-in columns extending in a direction perpendicular to the length direction of the bracket body, and two adjacent plug-in columns are spaced apart in the length direction of the bracket body;

[0013] The first plug-in portion includes a receiving portion located above the first plug-in board. When the first plug-in board is inserted into the space between the second plug-in board and the limiting matching portion, the receiving portion receives the insertion of the plug-in column.

[0014] Furthermore, at least one of the insertion posts is provided with a card connector.

[0015] Furthermore, each of the connecting parts is formed with a hollow portion for avoiding the explosion-proof valve.

[0016] Furthermore, a fixing portion for assembling a flexible circuit board is provided on the outer side of the connecting portion along the length direction of the bracket body.

[0017] Furthermore, the concave surface constituting the busbar is riveted to the bracket body.

[0018] Furthermore, a connecting rib extending along the length direction of the bracket body is fixedly connected between the two connecting parts.

[0019] Furthermore, a connecting rib is provided between the connecting rib and the bracket body.

[0020] The utility model also provides a busbar bracket, which comprises a plurality of busbar bracket splicing units which are plugged end to end.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The busbar bracket splicing unit described in the utility model is provided with two plug-in parts with plug-in structures that match each other at both ends of the bracket body in the length direction. The two plug-in parts constitute a connecting part. The number of busbar bracket splicing units of the utility model can be flexibly selected according to the number of battery cells in the battery module. The busbar bracket splicing units of the utility model are connected end to end to form a busbar bracket to adapt to battery modules with different numbers of battery cells, which is helpful for the versatility and interchangeability of component design, shortens the component development cycle, reduces mold costs, and saves costs.

[0023] The first plug-in portion includes a first plug-in board; the second plug-in portion includes a second plug-in board and a position-limiting matching portion held above the second plug-in board, and a space allowing the first plug-in board to be inserted is formed between the second plug-in board and the position-limiting matching portion. The first plug-in portion and the second plug-in portion can be connected more tightly and firmly through the matching of the plug-in board and the position-limiting matching portion, and the plate-shaped plug-in matching has a large contact surface, which improves the strength of the connection structure.

[0024] The position-limiting mating part includes a plurality of plug-in posts extending in a direction perpendicular to the length of the bracket body, and two adjacent plug-in posts are spaced apart along the length of the bracket body; the first plug-in part includes a receiving part located above the first plug-in board, and when the first plug-in board is inserted into the space between the second plug-in board and the position-limiting mating part, the receiving part receives the insertion of the plug-in posts. The position-limiting mating part provided outside the mating of the plug-in board and the receiving part can not only position the position-limiting mating part, but also help to further strengthen the mating strength of the plug-in board, making the mating more firm and stable.

[0025] At least one of the plug-in posts is provided with a card joint, which can make the connection of the plug-in posts stronger and more stable, and the busbar bracket assembled by multiple busbar bracket splicing units has better integrity.

[0026] A hollow portion for avoiding the explosion-proof valve is formed on each of the connecting portions, which can reserve space for the explosion-proof valve and also improve the bending strength of the connecting portion of the bus bracket splicing unit, so that the bus bracket assembled from multiple bus bracket splicing units has better durability.

[0027] A fixing part for assembling a flexible circuit board is provided on the outer side of the connecting part along the length direction of the bracket body. A mounting structure for a flexible circuit board can be provided, which expands the platform compatibility of the busbar bracket and is conducive to the platform development of the CCS bracket (Cells Contact System integrated busbar bracket).

[0028] The concave surface constituting the busbar is riveted to the bracket body. The concave surface of the busbar connected to the bracket body can provide space for the battery cell poles, so that the various components of the module are arranged compactly, which is conducive to improving the space utilization of the battery module.

[0029] A connecting rib extending along the length direction of the bracket body is fixedly connected between the two connecting parts. The connecting rib can improve the strength of the bracket splicing unit, so that the bracket splicing unit has better torsion and bending resistance in the length direction of the bracket body.

[0030] A connecting rib is provided between the connecting rib and the bracket body, and the connecting rib can further strengthen the strength of the bracket splicing unit and improve the bending strength of the connecting part.

[0031] The utility model also proposes a busbar bracket, which includes a plurality of busbar bracket splicing units plugged end to end. The busbar bracket of the utility model can be flexibly spliced ​​into a suitable length according to the number of battery cells in the module, which is conducive to the versatility and interchangeability of component design, shortens the component development cycle, reduces mold costs, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0033] Figure 1 It is a structural schematic diagram of the busbar bracket splicing unit according to the first embodiment of the utility model at one viewing angle;

[0034] Figure 2 It is a structural schematic diagram of the busbar bracket splicing unit according to the first embodiment of the utility model from another viewing angle;

[0035] Figure 3 for Figure 2 A magnified image of point A;

[0036] Figure 4 It is a structural schematic diagram of the busbar bracket splicing unit according to the first embodiment of the utility model from another viewing angle;

[0037] Figure 5 for Figure 4 The enlarged view of point B;

[0038] Figure 6 This is a schematic structural diagram of the busbar support described in the second embodiment of the present utility model;

[0039] Figure 7 This is a schematic diagram of the assembly structure of the busbar bracket, the flexible circuit board and the busbar according to the second embodiment of the utility model;

[0040] Figure 8 for Figure 7 Schematic diagram of the explosion structure;

[0041] Fig. 9 for Figure 7 The structural diagram of the positive and negative electrodes of the battery cell is marked;

[0042] Fig.10 This is a schematic diagram of the structure of the busbar described in the second embodiment of the present utility model;

[0043] Fig.11 This is a schematic diagram of the structure of the flexible circuit board described in the second embodiment of the present utility model;

[0044] Description of reference numerals:

[0045] 1. Busbar bracket splicing unit; 2. Flexible circuit board; 3. Busbar;

[0046] 101, bracket body; 1011, busbar riveting point;

[0047] 102, connecting portion; 1021, first plug-in portion; 1022, second plug-in portion; 1023, riveting point of flexible circuit board; 1024, hollow portion;

[0048] 103. Connecting ribs; 104. Linking ribs. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0050] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, if there are terms such as "first" to "fifth", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] For ease of description, spatially relative terms, such as "on", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that the spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein shall be interpreted accordingly.

[0052] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0053] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0054] Embodiment 1

[0055] The present embodiment relates to a bus bracket splicing unit, which includes: a bracket body, which is constructed in the shape of a long plate, and the bus can be connected to the bracket body; a pair of connecting parts, which are fixed at both ends of the length direction of the bracket body, and each connecting part is respectively provided with a first plug-in part and a second plug-in part, and the first plug-in part and the second plug-in part are distributed at two opposite ends of the connecting part in a manner perpendicular to the length direction of the bracket body, and the first plug-in part and the second plug-in part have plug-in structures that are compatible with each other.

[0056] Based on the above overall introduction, Figure 1 , Figure 2 As shown, the busbar bracket splicing unit described in the utility model uses a long plate-shaped bracket body as the main structure to provide strength, and two plug-in parts with plug-in structures that match each other are arranged at both ends of the bracket body in the length direction, and the two plug-in parts constitute a connecting part. A busbar bracket can be formed by connecting the plug-in parts between multiple busbar bracket splicing units of this embodiment end to end. The number of busbar bracket splicing units can be flexibly selected according to the number of battery cells in the battery module to adapt to battery modules with different numbers of battery cells, which is conducive to the versatility and interchangeability of component design, shortening the component development cycle, reducing mold costs, and saving costs.

[0057] In order to make the connection tighter and more secure, the first plug-in part includes a first plug-in board; the second plug-in part includes a second plug-in board and a limit fitting part held above the second plug-in board, and a space is formed between the second plug-in board and the limit fitting part to allow the first plug-in board to be inserted. Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the first plug-in portion and the second plug-in portion are located at two opposite sides of the bracket body. When two busbar bracket splicing units are assembled, the first plug-in plate of the first plug-in portion of one busbar bracket splicing unit is inserted into the space between the second plug-in plate and the limit matching portion of the other busbar bracket splicing unit, so as to continue to connect more busbar bracket splicing units by plug-in matching. The plate-shaped plug-in matching adopted in this embodiment has a large contact surface and improves the strength of the connection structure.

[0058] In order to further enhance the mating strength of the plug-in board and make the mating more firm and stable, the limited mating part includes a plurality of plug-in posts extending in a direction perpendicular to the length of the bracket body, and two adjacent plug-in posts are spaced apart along the length of the bracket body; the first plug-in part includes a receiving part located above the first plug-in board, and when the first plug-in board is inserted into the space between the second plug-in board and the limited mating part, the receiving part receives the insertion of the plug-in posts. Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in addition to the matching of the plug-in board, this embodiment further provides a limited matching of the plug-in column and the receiving part. The limited matching part above the second plug-in board adopts three plug-in columns arranged at intervals. The length of the plug-in column can be designed according to the actual situation so that the two plug-in parts can be firmly matched. A plurality of bosses are embossed on the top of the first plug-in board of this embodiment. The grooves formed between the bosses constitute the receiving part. Grooves are also formed between the plug-in columns of the limited matching part above the second plug-in board. Then, the plug-in column of the limited matching part can be inserted into the groove of the receiving part, and the boss can also be inserted into the groove between the plug-in columns, so they are matched by meshing. This method can not only position the limited matching part, but also help to further strengthen the matching strength of the plug-in board, making the plug-in matching more firm and stable.

[0059] In order to make the connection of the plug-in column more firm and stable, at least one of the plug-in columns is provided with a card joint. Figure 4 and Figure 5 As shown in the figure, there are three plug-in columns in total, the middle one is inserted smoothly and guided, and the two sides are provided with card connectors. The bosses and receiving parts on the first plug-in board that cooperate with them can further enable the plug-in columns to be connected by card connectors.

[0060] In order to reserve space for the explosion-proof valve on the battery cell during module assembly, each connection part is formed with a hollow portion to avoid the explosion-proof valve. Figure 1 and Figure 2 As shown, the hollow portion of this embodiment is in an oblong shape to fit the shape of the explosion-proof valve. The design of the hollow portion also improves the bending strength of the connection portion of the busbar support splicing unit, making the busbar support assembled from multiple busbar support splicing units more durable.

[0061] In order to integrate the electrical signal collection structure of the battery module into the busbar bracket, a fixing part for assembling a flexible circuit board is provided on the outer side of the connecting part along the length direction of the bracket body. Figure 1 , Figure 8 and Fig.11As shown, the fixed part of the flexible circuit board is specifically the riveting points of the flexible circuit board on both sides of the hollow part, and the matching flexible circuit board is provided with round holes. The fixed part of the flexible circuit board on the bus bracket can adopt hot riveting columns. When the flexible circuit board is laid on the bus bracket, it is set on the hot riveting columns through the round holes and fixed by hot riveting. By setting the fixed part of the flexible circuit board, a mounting structure of the flexible circuit board can be provided, which expands the platform compatibility of the bus bracket and is conducive to the platform development of the CCS bracket (Cells Contact System integrated bus bracket).

[0062] In order to adapt to the connection busbar, the embodiment can rivet the concave surface constituting the busbar on the bracket body. Figure 1 , Figure 8 and Fig.10 As shown, four busbar riveting points are arranged on the splicing unit of the busbar bracket of this embodiment. Of course, multiple busbar riveting points can also be arranged according to the actual length of the bracket body and the circuit connection requirements. The middle part of each bar unit constituting the busbar of this embodiment is recessed downward to form a groove, and a connecting hole for connecting the bracket body is arranged on the concave surface. During assembly, the connecting hole is put on the hot riveting column and fixed by hot riveting. The side wings of the concave surface protrude upward to provide space for the battery cell poles, so that the various components of the module can be arranged compactly, which is beneficial to improving the space utilization of the battery module. It is hot-riveted to the busbar bracket, with a simple structure, less material for the busbar bracket, saving material costs, and is beneficial to product lightweighting.

[0063] In order to further improve the structural strength of the busbar bracket splicing unit, a connecting rib extending along the length direction of the bracket body is fixedly connected between the two connecting parts. Figure 4 As shown, the connecting ribs are parallel to the length direction of the bracket body and connect the connecting parts. The connecting ribs can improve the strength of the bracket splicing unit and make the bracket splicing unit have better torsional and bending resistance in the length direction of the bracket body.

[0064] In order to further improve the structural strength of the busbar bracket splicing unit, a connecting rib is provided between the connecting rib and the bracket body. Figure 4 As shown, the connecting rib is perpendicular to the length direction of the bracket body, forms a T-shaped combination with the connecting rib, and forms two square holes with the bracket body and the connecting part. The square holes can provide space for the battery cell poles. In addition, this arrangement can also improve the bending strength of the connecting part, so that the durability of the bracket splicing unit is better.

[0065] Through the above-mentioned structural design, this embodiment sets two plug-in parts with plug-in structures that match each other at both ends of the length direction of the bracket body. The number of busbar bracket splicing units of the utility model can be flexibly selected according to the number of battery cells in the battery module, and the busbar bracket splicing units of the utility model are connected end to end to form a busbar bracket to adapt to battery modules with different numbers of battery cells. In addition, by setting a better plug-in structure and a strength-enhancing structure, the assembled busbar bracket has better integrity and has the performance of integrating multiple parts. It helps to design the versatility and interchangeability of parts, shorten the component development cycle, reduce mold costs, and save costs.

[0066] Embodiment 2

[0067] This embodiment designs a busbar support, which includes a plurality of busbar support splicing units connected end to end. Figure 6 As shown, the busbar support of this embodiment contains four splicing units described in the first embodiment. In addition, the busbar support of this embodiment also includes end plate units at both ends. It is easy to understand that the matching method of the end plate unit and the busbar support splicing unit is the same as the matching method of the connection part of the first embodiment. Therefore, the number of busbar support splicing units can be adjusted to adapt to battery modules of different lengths. In addition, the end plate unit can also be provided with a hot riveting point for connecting the flexible circuit board terminal.

[0068] like Figure 7 and Figure 8 As shown, Figure 7 FIG. 1 is an assembly diagram of the busbar bracket, the flexible circuit board and the busbar of this embodiment. Figure 8 This is an exploded view of the assembly of the busbar bracket, the flexible circuit board and the busbar of this embodiment. Figure 8 There are two flexible circuit boards in the module, which are laid on the bus bracket. The edges of the connection parts of each splicing unit are connected to provide a foundation for laying. The bus includes multiple bar units, which are connected to the riveted points of the bus. They are electrically connected to the battery cell group under the bus bracket to form a path for the module. A feasible circuit connection method is as follows Fig. 9 As shown, the "+" and "-" in the figure respectively represent the positions of the positive and negative poles of the battery cell. It can be understood that the battery cell module of this embodiment is to form a battery cell assembly by connecting two battery cells in parallel, and then the battery cell assemblies are connected in series to form a battery cell module. After the two upper or lower connecting pieces in the figure are connected by a conductor, the entire module is a passage. Of course, it is also possible to form two independent passages on the left and right without connecting with a conductor.

[0069] The utility model also proposes a busbar bracket, which is composed of a plurality of busbar bracket splicing units as described above connected end to end. The busbar bracket of the utility model can be flexibly spliced ​​into a suitable length according to the number of cells in the module, which is conducive to the versatility and interchangeability of component design, shortens the component development cycle, reduces mold costs, and saves costs.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A busbar support splicing unit, characterized in that: The splicing unit includes: A support body, the support body is configured as a long plate, and the busbar can be connected to the support body; A pair of connecting parts are fixedly retained at both ends of the length direction of the bracket body, and each of the connecting parts is respectively provided with a first plug-in part and a second plug-in part, and the first plug-in part and the second plug-in part are distributed at two opposite ends of the connecting part in a manner perpendicular to the length direction of the bracket body, and the first plug-in part and the second plug-in part have plug-in structures that are compatible with each other.

2. The busbar bracket splicing unit according to claim 1, characterized in that: The first plug-in portion includes a first plug-in board; The second plug-in portion includes a second plug-in board and a position-limiting fitting portion held above the second plug-in board, and a space allowing the first plug-in board to be inserted is formed between the second plug-in board and the position-limiting fitting portion.

3. The busbar support splicing unit according to claim 2, characterized in that: The position-limiting matching portion includes a plurality of plug-in columns extending in a direction perpendicular to the length direction of the bracket body, and two adjacent plug-in columns are spaced apart in the length direction of the bracket body; The first plug-in portion includes a receiving portion located above the first plug-in board. When the first plug-in board is inserted into the space between the second plug-in board and the limiting matching portion, the receiving portion receives the insertion of the plug-in column.

4. The busbar support splicing unit according to claim 3, characterized in that: At least one of the insertion posts is provided with a card connector.

5. The busbar support splicing unit according to claim 1, characterized in that: A hollow portion for avoiding the explosion-proof valve is formed on each of the connecting portions.

6. The busbar support splicing unit according to claim 1, characterized in that: A fixing portion for assembling a flexible circuit board is provided on the outer side of the connecting portion along the length direction of the bracket body.

7. The busbar support splicing unit according to claim 1, characterized in that: The concave surface constituting the busbar is riveted to the bracket body.

8. The busbar support splicing unit according to any one of claims 1 to 7, characterized in that: A connecting rib extending along the length direction of the bracket body is fixedly connected between the two connecting parts.

9. The busbar support splicing unit according to claim 8, characterized in that: A connecting rib is provided between the connecting rib and the bracket body.

10. A busbar support, characterized in that: The busbar support is composed of a plurality of busbar support splicing units as described in any one of claims 1 to 9 which are plugged end to end.

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