Busbar bracket assembly and battery pack with same

Abstract

The utility model provides a busbar support assembly and a battery pack with the same, the busbar support is applied to the battery pack, the battery pack comprises a box body and a battery cell, the battery cell is arranged in the box body, the busbar support assembly comprises a busbar, the busbar is electrically connected with the battery cell, and the busbar is arranged in the box body. The support is suitable for being fixed to the box body, the busbar is fixed to the side, facing the battery cell, of the support, and at least part of the support is bent towards the battery cell and is suitable for being in interference fit with the battery cell. According to the busbar support assembly disclosed by the utility model, the support is arranged, and the busbar can be electrically connected with the battery cell through the support, so that the assembly time can be saved, the assembly efficiency can be improved, the production cost of the battery pack can be reduced, and meanwhile, the universality of the busbar support assembly can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack manufacturing, in particular to a busbar bracket assembly and a battery pack having the same. Background Art

[0002] In existing battery packs, welding is generally used to connect the busbars and battery cells. However, the welding process is difficult and increases the number of steps required to connect the busbars and battery cells, thereby increasing the production cost of the battery pack. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a busbar bracket assembly that can reduce the production cost of a battery pack.

[0004] The utility model also provides a battery pack having the above-mentioned busbar bracket assembly.

[0005] According to the busbar bracket assembly of the embodiment of the present invention, it is applied to a battery pack, which includes a case and battery cells, and the battery cells are arranged in the case. The busbar bracket assembly includes: a busbar, which is electrically connected to the battery cell; a bracket, which is suitable for being fixed to the case, and the busbar is fixed to the side of the bracket facing the battery cell, and at least a portion of the bracket is bent toward the battery cell and is suitable for interference fit with the battery cell.

[0006] According to the bus bracket assembly of the present invention, a bracket is provided, and the bus can be electrically connected to the battery cell through the bracket, thereby saving assembly time, improving assembly efficiency, and reducing the production cost of the battery pack. At the same time, the versatility of the bus bracket assembly can be improved.

[0007] According to some embodiments of the present invention, there are two brackets, and the two brackets are suitable for being arranged on opposite sides of the battery core, and the battery core is embedded between the two brackets.

[0008] According to some embodiments of the present invention, the bracket includes: a fixing plate, which is fixedly connected to the box body; a connecting plate, one end of which is connected to the fixing plate, and the other end of the connecting plate is suitable for extending away from the fixing plate along the height direction of the battery cell, and in the direction from the fixing plate toward the connecting plate, the connecting plate is suitable for extending obliquely toward the battery cell, and the bus is fixed to the connecting plate.

[0009] According to some optional embodiments of the present invention, the busbar is connected to the connecting plate by thermal riveting.

[0010] According to some embodiments of the utility model, first board and second board are equipped on the connecting plate, the first board and the second board all extend along the height direction of the connecting plate, the first board and the second board are alternately arranged along the width direction of the connecting plate, the number of busbars is multiple, multiple busbars are arranged at intervals along the width direction of the connecting plate, each busbar is fixed on adjacent first board or adjacent second board, and adjacent busbars are separated by second board or first board.

[0011] According to some optional embodiments of the utility model, a through hole is arranged between the first board and the second board, and the through hole penetrates the connecting plate along the thickness direction of the connecting plate.

[0012] According to some embodiments of the utility model, a plurality of fixing holes are arranged on the fixing plate, and a fastener passes through the fixing hole to fix the fixing plate to the box body.

[0013] According to some embodiments of the utility model, the busbar comprises a first busbar and a second busbar, the first busbar is arranged at both ends of the plurality of second busbars, the first busbar is adapted to connect the battery monomer of the electric core and the external structure, and the second busbar is adapted to be electrically connected with the adjacent battery monomer of the electric core.

[0014] According to some optional embodiments of the utility model, the second busbar has a body and a connecting part, the body is connected between two connecting parts, and the two connecting parts are adapted to be electrically connected with the adjacent battery monomer of the electric core respectively.

[0015] According to the battery pack of the second aspect embodiment of the utility model, the battery pack comprises: a box body; an electric core arranged in the box body; and the busbar support assembly according to the first aspect of the utility model, which is electrically connected with the electric core.

[0016] According to the battery pack of the utility model, by arranging the busbar support assembly of the first aspect embodiment, arranging the support, the busbar can be electrically connected with the electric core through the support, so that the assembly time can be saved, the assembly efficiency can be improved, the production cost of the battery pack can be reduced, and the universality of the busbar support assembly can be improved.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of one angle of the battery pack according to the embodiment of the utility model;

[0019] Figure 2 is Figure 1 a schematic view of another angle of the battery pack shown in FIG.

[0020] Figure 3 is Figure 2 a schematic view of the busbar support assembly shown in FIG.

[0021] Figure 4 is Figure 3 a schematic view of the support shown in FIG.

[0022] Reference Signs:

[0023] 100, busbar support assembly;

[0024] 10, busbar; 11, first busbar; 12, second busbar; 121, body; 122, connecting portion;

[0025] 20, support; 21, fixing plate; 211, fixing hole; 22, connecting plate; 221, first plate; 222, second plate; 223, through hole;

[0026] 200, box body;

[0027] 300, battery cell;

[0028] 400, pressing plate;

[0029] 500, flexible circuit board;

[0030] 1000, battery pack. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0032] The busbar support assembly 100 according to the embodiments of the present application is described below with reference to the accompanying drawings. Figures 1-4

[0033] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 ​According to the busbar support assembly 100, the busbar 10 can be electrically connected with the battery cell 300 through the support 20, compared with the scheme that the busbar 10 needs to be welded with the battery cell 300 in the prior art, the busbar support assembly 100 can reduce the connecting steps of the busbar 10 and the battery cell 300, thereby the assembling time can be saved, the assembling efficiency is improved, the production cost of the battery pack 1000 is reduced, and when the current overload is large and a relatively thick busbar 10 needs to be arranged to ensure safety, the busbar support assembly 100 can directly electrically connect the busbar 10 with the battery cell 300, without considering the welding problem of the busbar 10 and the battery cell 300, thereby the universality of the busbar support assembly 100 is improved.

[0034] For example, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the support 20 is fixedly connected with the box body 200, the busbar 10 is fixed on the support 20, and the busbar 10 is electrically connected with the battery cell 300 through the support 20. The busbar 10 can collect the current generated by the battery cell 300 and transmit it to a load or an energy storage system. The box body 200 can provide a layout position for the battery cell 300 and protect the battery cell 300.

[0035] When the busbar support assembly 100 is assembled in the battery pack 1000, the support 20 is first fixed with the box body 200, then the busbar 10 is fixed with the support 20, and then the battery cell 300 is arranged in the box body 200 and is in interference fit with the support 20. The support 20 pushes the busbar 10 to be electrically connected with the battery cell 300.

[0036] The busbar support assembly 100 of the utility model, set up support 20, busbar 10 can be electrically connected with battery cell 300 through the action of support 20, compared with the scheme that the busbar 10 needs to be welded with the battery cell 300 in the prior art, the busbar support assembly 100 can reduce the connecting steps of the busbar 10 and the battery cell 300, thereby the assembling time can be saved, the assembling efficiency is improved, the production cost of the battery pack 1000 is reduced, and when the current overload is large and a relatively thick busbar 10 needs to be arranged to ensure safety, the busbar support assembly 100 can directly electrically connect the busbar 10 with the battery cell 300, without considering the welding problem of the busbar 10 and the battery cell 300, thereby the universality of the busbar support assembly 100 is improved. In addition, the busbar 10 assembly is directly fixed with the box body 200, thereby the battery cell 300 is directly assembled with the box body 200, the process flow of the battery cell 300 being separately formed is saved, and the installation efficiency of the battery pack 1000 can be effectively improved.

[0037] According to the busbar support assembly 100 of the embodiment of the utility model, the busbar 10 can be electrically connected with the battery cell 300 through the support 20, so that the assembling time can be saved, the assembling efficiency is improved, and the production cost of the battery pack 1000 can be reduced, and meanwhile, the versatility of the busbar support assembly 100 can be improved.

[0038] According to some embodiments of the utility model, referring to Figure 1 , Figure 3 and Figure 4 , the number of the support 20 is two, the two supports 20 are suitable to be arranged on the opposite sides (such as the front and rear sides shown in Figure 4 ) of the battery cell 300, and the battery cell 300 is embedded between the two supports 20. Thus, the two supports 20 can cooperate with each other to ensure the fixing strength between the support 20 and the battery cell 300, so that the battery cell 300 and the support 20 can be prevented from being separated, and meanwhile, the stability of the connection between the busbar 10 and the battery cell 300 can be ensured.

[0039] For example, as shown in Figure 1 , Figure 3 and Figure 4 , the two supports 20 are arranged in the front and rear direction, one busbar 10 is arranged on the rear side of the front support 20, and one busbar 10 is arranged on the front side of the rear support 20.

[0040] According to some embodiments of the utility model, referring to Figure 3 and Figure 3 , the support 20 comprises a fixed plate 21 and a connecting plate 22, the fixed plate 21 is fixedly connected with the box body 200; one end (such as the lower end of the connecting plate 22 shown in Figure 3 ) of the connecting plate 22 is connected with the fixed plate 21, and the other end (such as the upper end of the connecting plate 22 shown in Figure 3 ) of the connecting plate 22 is suitable to extend away from the fixed plate 21 along the height direction (such as the up and down direction of the battery cell 300 shown in Figure 3 ) of the battery cell 300, in the direction from the fixed plate 21 to the connecting plate 22, the connecting plate 22 is suitable to extend obliquely towards the battery cell 300, and the busbar 10 is fixed with the connecting plate 22.

[0041] In this way, the fixed plate 21 can fix the support 20 with the box body 200, so that the support 20 and the box body 200 can be prevented from being separated, and then the connection of the support 20 and the box body 200 can be facilitated, meanwhile, the bending of the connecting plate 22 can ensure the interference fit between the connecting plate 22 and the battery cell 300, so that the busbar 10 and the battery cell 300 can be prevented from being disconnected, and then the stability of the connection between the busbar 10 and the battery cell 300 can be ensured.

[0042] For example, as shown in Figure 3 and Figure 3As shown, the fixing plate 21 is horizontally arranged, the fixing plate 21 is connected with the box body 200, the lower end of the connecting plate 22 is connected with the fixing plate 21, and the upper end of the connecting plate 22 extends upwardly, and the connecting plate 22 is bent towards the battery cell 300 in the direction from bottom to top.

[0043] According to some optional embodiments of the present application, referring to Figure 3 and Figure 4 , the busbar 10 is hot riveted with the connecting plate 22. Thus, the fixing strength of the busbar 10 and the connecting plate 22 can be ensured, so that the separation of the busbar 10 and the connecting plate 22 can be effectively prevented, and at the same time, the hot riveting process is simple and convenient to operate, so that the connection efficiency of the busbar 10 and the connecting plate 22 can be improved.

[0044] According to some embodiments of the present application, referring to Figure 3 and Figure 4 , the connecting plate 22 is provided with a first plate 221 and a second plate 222, the first plate 221 and the second plate 222 both extend along the height direction of the connecting plate 22 (such as the up-down direction of the connecting plate 22 as shown in Figure 4 ), the first plate 221 and the second plate 222 are alternately arranged along the width direction of the connecting plate 22 (such as the left-right direction of the connecting plate 22 as shown in Figure 4 ), the number of the busbar 10 is multiple, that is, the number of the busbar 10 can be two, three or four or more, the multiple busbars 10 are arranged at intervals along the width direction of the connecting plate 22, each busbar 10 is fixed on the adjacent first plate 221 or the adjacent second plate 222, and the adjacent busbars 10 are separated by the second plate 222 or the first plate 221.

[0045] In this way, the first plate 221 and the second plate 222 can provide arrangement positions for the busbar 10, so that the arrangement of the busbar 10 can be facilitated, and at the same time, the first plate 221 and the second plate 222 can separate the adjacent busbars 10, so that the contact short circuit between the adjacent busbars 10 can be avoided, thereby ensuring the use safety of the battery pack 1000.

[0046] For example, as shown in Figure 3 and Figure 4 , the first plate 221 and the second plate 222 extend along the up-down direction, the first plate 221 and the second plate 222 are alternately arranged along the left-right direction, the busbar 10 is arranged at intervals along the left-right direction, and each busbar 10 is fixed on the adjacent first plate 221, and the adjacent busbars 10 are separated by the second plate 222.

[0047] According to some optional embodiments of the present application, referring to Figure 3 and Figure 4 , a through hole 223 is arranged between the first plate 221 and the second plate 222, the through hole 223 extends along the thickness direction of the connecting plate 22 (such as the front-rear direction of the connecting plate 22 as shown inFigure 1 The connecting plate 22 is provided with a plurality of through holes 221, that is, the connecting plate 22 is provided with two, three or four or more through holes 221, and the fastener passes through the through hole 221 to fix the connecting plate 22 to the box body 200. Thus, this fixing form is simple in structure and convenient to operate, thereby effectively improving the fixing efficiency, and at the same time, the fixing strength of the support 20 and the box body 200 can be ensured, and the separation of the support 20 and the box body 200 can be effectively prevented.

[0048] According to some embodiments of the present application, referring to Figure 3 and Figure 4 , the fixing plate 21 is provided with a plurality of fixing holes 211, that is, the fixing plate 21 is provided with two, three or four or more fixing holes 211, and the fastener passes through the fixing hole 211 to fix the fixing plate 21 to the box body 200. Thus, this fixing form is simple in structure and convenient to operate, thereby effectively improving the fixing efficiency, and at the same time, the fixing strength of the support 20 and the box body 200 can be ensured, and the separation of the support 20 and the box body 200 can be effectively prevented.

[0049] According to some embodiments of the present application, referring to Figure 2 and Figure 3 , the busbar 10 comprises: a first busbar 11 and a second busbar 12, the first busbar 11 is arranged at both ends of the plurality of second busbars 12 (such as Figure 3 the left end and the right end of the second busbar 12 shown), the first busbar 11 is adapted to connect the battery monomer of the battery cell 300 and the external structure, and the second busbar 12 is adapted to be electrically connected with the adjacent battery monomer of the battery cell 300. Thus, the current in the adjacent battery monomers can be collected through the second busbar 12, and the current collected by the second busbar 12 can be output to the external structure through the first busbar 11, thereby realizing the normal operation of the battery pack 1000.

[0050] For example, as Figure 2 and Figure 3 shown, the second busbar 12 is provided in plurality, the plurality of second busbars 12 are arranged in the left-right direction, the plurality of second busbars 12 connect adjacent battery monomers, the left side first busbar 11 is electrically connected with the leftmost battery monomer, and the right side second busbar 12 is electrically connected with the rightmost battery monomer.

[0051] According to some embodiments of the present application, referring to Figure 2 and Figure 3 , the second busbar 12 has a body 121 and a connecting portion 122, the body 121 is connected between the two connecting portions 122, and the two connecting portions 122 are adapted to be electrically connected with the adjacent battery monomers of the battery cell 300. Thus, the connecting portion 122 can connect the adjacent battery monomers in series, and the body 121 connects the two connecting portions 122, thereby realizing the series connection of the adjacent battery monomers through the two connecting portions 122.

[0052] For example, as shown in Figure 2 and Figure 3 Two connecting parts 122 are fixed on two adjacent first plates 221, two connecting parts 122 are connected with adjacent battery monomers respectively, the body 121 extends along the left-right direction and is connected with the two connecting parts 122, and the body 121 is fixed with the support 20 through a hot riveting process.

[0053] According to the battery pack 1000 of the second aspect of the utility model, referring to Figure 1 、 Figure 2 and Figure 3 , comprising: a box body 200; an electric core 300, the electric core 300 is arranged in the box body 200, and the electric core 300 has a plurality of battery monomers; the busbar support assembly 100 of the first aspect of the embodiment, and the busbar support assembly 100 is connected with the plurality of battery monomers.

[0054] For example, the plurality of battery monomers are arranged along the left-right direction, the plurality of battery monomers form the electric core 300, the electric core 300 is arranged in the box body 200, and the busbar 10 of the busbar support assembly 100 is connected in series with the plurality of battery monomers. Preferably, the electric core 300 is adhesively connected with the box body 200, so that the fixing strength of the electric core 300 and the box body 200 can be guaranteed.

[0055] According to the battery pack 1000 of the embodiment of the utility model, by arranging the busbar support assembly 100 of the first aspect of the embodiment, arranging the support 20, the busbar 10 can be electrically connected with the electric core 300 through the support 20, so that the assembly time can be saved, the assembly efficiency can be improved, the production cost of the battery pack 1000 can be reduced, and the versatility of the busbar support assembly 100 can be improved.

[0056] Further, as shown in Figure 1 The battery pack 1000 further comprises a pressing plate 400 and a flexible circuit board 500, the pressing plate 400 is arranged on the upper side of the electric core 300 and is adhesively connected with the electric core 300, and the flexible circuit board 500 is fixed with the support 20. Therefore, by arranging the pressing plate 400, the battery monomers of the electric core 300 can be prevented from separating from other battery monomers, so that the stability of the fixation between the battery monomers and the box body 200 can be guaranteed, and the flexible circuit board 500 can collect data such as current and voltage of the electric core 300, so that the use safety of the battery pack 1000 can be guaranteed.

[0057] In assembling the battery pack 1000, firstly, the busbar 10 is connected with the bracket 20 through hot riveting, then the bracket 20 is fixed with the box body 200 by using fasteners, after that, the battery cell 300 is installed between the two brackets 20, and the bracket 20 is ensured to be in interference fit with the battery cell 300, so that the busbar 10 is electrically connected with the battery cell 300, then the flexible circuit board 500 is fixed with the bracket 20 and connected with the battery cell, finally, the pressing plate 400 is installed, the pressing plate 400 is arranged on the upper side of the battery cell 300 and is adhesively connected with the battery cell 300, at this time, the assembling of the battery pack 1000 is completed.

[0058] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0060] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without mutual contradiction.

[0062] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A busbar bracket assembly (100), applied to a battery pack (1000), wherein the battery pack (1000) comprises a box (200) and a battery cell (300), wherein the battery cell (300) is arranged in the box (200), and is characterized in that: The busbar support assembly (100) comprises: A busbar (10), the busbar (10) being electrically connected to the battery cell (300); A bracket (20), the bracket (20) is suitable for being fixed to the box (200), the busbar (10) is fixed to a side of the bracket (20) facing the battery cell (300), and at least a portion of the bracket (20) is bent toward the battery cell (300) and is suitable for interference fit with the battery cell (300).

2. The busbar support assembly (100) according to claim 1, characterized in that: There are two brackets (20), and the two brackets (20) are suitable for being arranged on opposite sides of the battery core (300), and the battery core (300) is embedded between the two brackets (20).

3. The busbar support assembly (100) according to claim 1, characterized in that: The support (20) comprises: A fixing plate (21), wherein the fixing plate (21) is fixedly connected to the box body (200); A connecting plate (22), one end of the connecting plate (22) is connected to the fixing plate (21), the other end of the connecting plate (22) is adapted to extend away from the fixing plate (21) along the height direction of the battery cell (300), and in a direction from the fixing plate (21) toward the connecting plate (22), the connecting plate (22) is adapted to extend obliquely toward the battery cell (300), and the busbar (10) is fixed to the connecting plate (22).

4. The busbar support assembly (100) according to claim 3, characterized in that: The busbar (10) is connected to the connecting plate (22) by thermal riveting.

5. The busbar support assembly (100) according to claim 3, characterized in that: The connecting plate (22) is provided with a first plate (221) and a second plate (222), the first plate (221) and the second plate (222) both extend along the height direction of the connecting plate (22), and the first plate (221) and the second plate (222) are alternately arranged along the width direction of the connecting plate (22). There are multiple busbars (10), and the multiple busbars (10) are arranged at intervals along the width direction of the connecting plate (22). Each busbar (10) is fixed on the adjacent first plate (221) or the adjacent second plate (222), and the adjacent busbars (10) are separated by the second plate (222) or the first plate (221).

6. The busbar support assembly (100) according to claim 5, characterized in that: A through hole (223) is provided between the first plate (221) and the second plate (222), and the through hole (223) penetrates the connecting plate (22) along the thickness direction of the connecting plate (22).

7. The busbar support assembly (100) according to claim 3, characterized in that: The fixing plate (21) is provided with a plurality of fixing holes (211), and fasteners pass through the fixing holes (211) to fix the fixing plate (21) to the box body (200).

8. The busbar support assembly (100) according to claim 1, characterized in that: The busbar (10) comprises: a first busbar (11) and a second busbar (12), wherein the first busbar (11) is provided at both ends of a plurality of the second busbars (12), the first busbar (11) is suitable for connecting the battery cells of the battery core (300) and an external structure, and the second busbar (12) is suitable for electrically connecting to adjacent battery cells of the battery core (300).

9. The busbar support assembly (100) according to claim 8, characterized in that: The second busbar (12) has a body (121) and a connecting portion (122), wherein the body (121) is connected between two connecting portions (122), and the two connecting portions (122) are suitable for being electrically connected to adjacent battery cells of the battery core (300), respectively.

10. A battery pack (1000), characterized in that: include: Box (200); A battery core (300), the battery core (300) being disposed in the box (200), and the battery core (300) having a plurality of battery cells; The busbar support assembly (100) according to any one of claims 1 to 9, wherein the busbar support assembly (100) is connected to a plurality of battery cells.

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