Battery module

Abstract

The utility model discloses a battery module which comprises a support, a plurality of battery cells assembled in a containing cavity of the support and a busbar assembly, a positioning connecting part matched with the busbar assembly is arranged on an installation face on the support, and the busbar assembly is positioned, connected and fixed through the positioning connecting part and is welded with an acquisition wire harness. According to the utility model, the busbar assembly is connected with the positioning connecting part on the support, and then the busbars are welded, so that the production efficiency is improved; in the PACK process, assembling of the busbar to the support and welding of the collection wire harness can be changed into previous procedure processing, the busbar is firstly connected and fixed on the support through the positioning connecting part, then welding of the collection wire harness is conducted, and conduction testing is conducted on the collection wire harness, so that the number of times of replacing welding equipment and carrying of semi-finished products due to welding of the busbar and the collection wire harness is reduced, and the production efficiency is improved. And meanwhile, fool-proof assembly of the busbar can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery module. BACKGROUND

[0002] The current energy storage cylindrical battery module usually assembles the electric core into the support first, then carries out the laser welding of AB surface busbar, then carries out the welding collection wire harness or collection PCBA board, and the production efficiency is low, and in the assembly process, it is easy to assemble wrong busbar and causes the short circuit risk of whole module. UTILITY MODEL CONTENTS

[0003] The utility model discloses a battery module that can efficiently assemble busbar and prevent mistakes.

[0004] The utility model discloses a battery module that can efficiently assemble busbar and prevent mistakes.

[0005] A battery module, comprising a support, a plurality of electric cores and a busbar assembly,

[0006] The support mounting surface is provided with a positioning connecting component matched with the busbar assembly;

[0007] The busbar assembly is positioned and connected with the mounting surface through the positioning connecting component and is welded with a collection wire harness;

[0008] The support is internally provided with a containing cavity, the plurality of electric cores are assembled in the containing cavity, and the busbar assembly is electrically connected with the electrodes of the electric cores.

[0009] Further, the positioning connecting component comprises first, second and third connecting components, the busbar assembly comprises a plurality of busbars, each busbar is positioned and connected with the support through the first, second and third connecting components.

[0010] Further, the first connecting component comprises a plurality of positioning columns, each busbar is provided with two positioning holes corresponding to the positioning columns, and the positioning holes are sleeved with the positioning columns.

[0011] Further, the second connecting component comprises a plurality of clamping hooks, each busbar is provided with one clamping buckle on the upper edge and the lower edge respectively, and the clamping hook is buckled with the clamping buckle.

[0012] Further, each busbar is provided with a terminal.

[0013] Further, the third connecting component comprises a plurality of convex buckles, each terminal is provided with one buckle hole corresponding to the convex buckle, and the convex buckle is buckled into the buckle hole.

[0014] Further, the busbar assembly is fixed on the mounting surface of the bracket through laser welding after being positioned and connected with the positioning and connecting part.

[0015] Further, the bracket is provided with a limiting hole of each battery cell, and each busbar is provided with a limiting recess and a connecting part surrounding the limiting recess, and the limiting hole corresponds to the limiting recess one by one.

[0016] The mounting surface of the bracket is composed of two opposite surfaces, and the first connecting part on the two mounting surfaces is arranged at different positions.

[0017] Further, the two mounting surfaces are provided with through holes at the same side and the same end corner, and the collection line is arranged outside the through hole of the mounting surface.

[0018] The battery module of the utility model, through the positioning and connecting part of the busbar assembly and the bracket is connected and then each busbar is welded, the degree of automation is increased, and the production efficiency is improved; in the PACK process, the assembly busbar to the bracket and the welding collection wire harness can be changed into the front process machining, the busbar is connected and fixed on the bracket through the positioning and connecting part first, then the welding of the collection wire harness is carried out and the collection wire harness is tested, compared with the battery module of the prior art, the carrying frequency of the welding busbar and the collection wire harness is reduced, the carrying frequency of the semi-finished product with the battery is reduced, the safety risk is reduced, and the safety accident is avoided; the positioning and connecting part of the utility model further realizes the foolproof of the busbar, and avoids the risk of battery module short circuit caused by the wrong assembly of the busbar. ACCURACY

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled in the art, other related drawings can be obtained without the creative labor on the premise of the drawings.

[0020] Figure 1 It is the schematic diagram of the battery module of the utility model;

[0021] Figure 2 It is the schematic diagram of the mounting surface of the assembly busbar assembly and the welding collection wire;

[0022] Figure 3 It is the mounting surface explosion drawing of the assembly busbar assembly of the bracket;

[0023] Figure 4 It is another schematic diagram of the mounting surface of the assembly busbar assembly and the welding collection wire. DETAILED DESCRIPTION

[0024] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[0025] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the terms "first," "second," "third," and the like do not limit the number of terms but are used to distinguish one element from another.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] As shown in Figures 1 to 3 The present embodiment provides a battery module, comprising a support 1, a plurality of battery cells 2 and a busbar assembly, the support 1 is provided with a positioning connecting part on the mounting surface 111 which cooperates with the busbar assembly 112; the busbar assembly 112 is fixed and welded with a collection wire harness 113 through the positioning connecting part and the mounting surface 111; the support 1 is internally provided with a receiving cavity, the plurality of battery cells 2 are assembled in the receiving cavity, and the busbar assembly 112 is electrically connected with the electrodes of each battery cell 2.

[0028] The battery module of the present embodiment connects and positions the busbar and the support 1 through the busbar assembly 112 and the positioning connecting part on the support 1, without the need to set a corresponding busbar assembly 112 mounting groove on the support 1 for positioning, which simplifies the design, increases the degree of automation and improves the production efficiency; during the PACK process, the assembly of the busbar assembly 112 to the support and the welding of the collection wire harness 113 can be changed to a pre-process, the busbar assembly 112 is first connected and fixed on the support through the positioning connecting part, then the welding of the collection wire harness 113 is performed and the continuity test of the collection wire harness 113 is performed, without the need to transfer the semi-finished product multiple times, compared with the prior art battery module which needs to transfer and turn over the semi-finished product with the battery multiple times during the assembly of the busbar to the support and the welding of the collection wire harness, the safety risk can be reduced and the safety accident can be avoided.

[0029] As a preferred embodiment of the present embodiment, the positioning connecting components include first, second and third connecting components 31, 32 and 33, the busbar assembly 112 includes a plurality of busbars, and each busbar of the busbar assembly 112 is positioned and connected with the support 1 through the first, second and third connecting components 31, 32 and 33.

[0030] In this embodiment, the first connecting component 31 includes a plurality of positioning columns, each busbar is provided with two positioning holes 41 corresponding to the positioning columns, the positioning holes 41 are sleeved with the positioning columns 31, the second connecting component 32 includes a plurality of hooks, the upper and lower edges of each busbar are provided with a buckle 42 corresponding to the hooks 32, the hooks 32 are buckled with the buckles 42, so that each busbar of the busbar assembly 112 is clamped on the mounting surface 111, and the busbar is further positioned.

[0031] In this way, as described above, in this embodiment, the first connecting component 31 positions the busbar from the length direction of the support, and the second connecting component 32 positions the busbar from the width direction of the support.

[0032] The third connecting component 33 includes a plurality of protruding buckles, each busbar is provided with a terminal 40, in this scheme, the terminal is a nickel sheet terminal, each nickel sheet terminal is provided with a buckling hole 43 corresponding to one protruding buckle 33, and the protruding buckle 33 is buckled into the buckling hole 43.

[0033] In specific implementation, the terminal 40 can also be connected with a plug-in part 44, the plug-in part 44 makes the connection and disconnection of the circuit more simple and fast, improves the assembly speed, and allows the circuit to be reconfigured when needed, thereby increasing the flexibility of the system.

[0034] As a preferred embodiment of the present embodiment, after the busbar assembly 112 is positioned and connected with the positioning connecting components, the busbar assembly 112 is fixed on the mounting surface 111 of the support by laser welding.

[0035] As a preferred embodiment of the present embodiment, the support is provided with a limiting hole 21 of each battery cell 2, each busbar is provided with a limiting recess 22 and a connecting part surrounding the limiting recess 22, and the limiting hole 21 corresponds to the limiting recess 22 one by one. In this way, the design and manufacture of the mounting surface of the support can be simplified, and it is not necessary to set a mounting groove corresponding to the busbar assembly. After the busbar assembly is positioned and connected through the positioning connecting components, the busbar assembly is welded and fixed, and the limiting recess 22 and the limiting hole 21 correspond to each other to limit the battery cell 2.

[0036] As a preferred embodiment of the present embodiment, the busbar assembly 112 is provided with an electrode connecting piece 5 fixedly connected to the edge of the support in one busbar in the length direction of the support and one busbar in the width direction of the support, and after the busbar assembly 112 is electrically connected to each battery cell 2, the electrode connecting piece 5 becomes a positive or negative output terminal.

[0037] As a preferred embodiment of the present embodiment, referring to Figure 2 and Figure 4 , the support mounting surface has two opposite surfaces, the first connecting component of the two mounting surfaces is different in position, that is, the two positioning holes 41 on each busbar of the busbar assembly 112 are one-to-one correspondingly sleeved with the two positioning columns 31 on the mounting surface 111, and the positioning columns 31 of the two mounting surfaces are different in arrangement position, so that the foolproof function can be achieved and the busbar can be prevented from being incorrectly assembled.

[0038] As a preferred embodiment of the present embodiment, the two mounting surfaces 111 are provided with through holes 23 at the same side and the same end corner, and the collection lines 113 are externally connected to the lines outside the mounting surface 111 through the through holes 23, so that when the collection lines 113 of the two mounting surfaces are arranged to be externally connected to the external lines at the same side and the same end, respectively, the assembly process can be simplified, the assembly time can be reduced, the assembly workers do not need to frequently change tools or adjust positions, and the assembly efficiency is further improved.

[0039] The above-described embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the application patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A battery module, comprising a bracket, a plurality of battery cells and a busbar assembly, characterized in that: each of the mounting surfaces of the bracket is provided with a positioning and connecting component that cooperates with the busbar assembly; the busbar assembly is positioned and connected to the mounting surface through the positioning and connecting component, and is welded with a collection harness; the bracket is internally provided with a receiving cavity, the plurality of battery cells are assembled in the receiving cavity, and the busbar assembly is electrically connected to the electrodes of each battery cell.

2. The battery module of claim 1, wherein, The positioning and connecting component comprises a first connecting component, a second connecting component and a third connecting component, and the busbar assembly comprises a plurality of busbars, each of which is positioned and connected to the bracket through the first connecting component, the second connecting component and the third connecting component.

3. The battery module of claim 2, wherein, The first connecting component comprises a plurality of positioning columns, each of the busbars is provided with two positioning holes corresponding to the positioning columns, and the positioning holes are sleeved with the positioning columns.

4. The battery module of claim 2, wherein, The second connecting component comprises a plurality of hooks, each of the busbars is provided with one buckle on the upper and lower edges corresponding to the hooks, and the hooks are buckled with the buckles.

5. The battery module of claim 2, wherein, Each of the busbars is provided with a terminal.

6. The battery module of claim 5, wherein, The third connecting component comprises a plurality of protruding buckles, each of the terminals is provided with one buckle hole corresponding to the protruding buckles, and the protruding buckles are buckled into the buckle holes.

7. The battery module of claim 1, wherein, After the busbar assembly is positioned and connected to the positioning and connecting component, it is fixed on the mounting surface of the bracket by laser welding.

8. The battery module of claim 2, wherein, The bracket is provided with a limiting hole of each battery cell, each busbar is provided with a limiting recess and a connecting part surrounding the limiting recess, and the limiting hole corresponds to the limiting recess one by one.

9. The battery module of claim 3, wherein, The bracket mounting surface is opposite two surfaces, and the first connecting components on the two mounting surfaces are arranged at different positions.

10. The battery module of claim 9, wherein, Through holes are provided on the same side and at the same corner of the two mounting surfaces, and the collection line is connected to the through hole of the mounting surface where it is located.

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