CN209896159U

CN209896159U - Lithium battery bus bar

Info

Publication number: CN209896159U
Application number: CN201920792008.4U
Authority: CN
Inventors: 黄进德; 欧阳长春; 任海斌
Original assignee: Jiangsu Core Amperex Technology Ltd
Current assignee: Zhongan Xinjie (Laixi) New Energy Technology Co.,Ltd.
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-01-03
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a lithium cell piece that converges, the camera module comprises a module, module outer wall both sides all are provided with the piece that converges, converge all be provided with solid screw rod hole in piece and the module, be provided with cross recess and contact shell fragment on converging the piece, and contact shell fragment is located cross recess one side, piece one end that converges is provided with utmost point ear. The utility model discloses a setting of a series of structures can the adjacent module of stable connection, reduces the connection cost between the module, improves assembly efficiency.

Description

Lithium battery bus bar

Technical Field

The utility model relates to the technical field of batteries, specifically a lithium cell piece that converges.

Background

Lithium batteries are more and more widely applied in daily life, the lithium batteries are arranged in different ways according to different use requirements, and the shapes of bus bars required by the lithium batteries are naturally different. The bus bar occupies an extremely important position in the battery PACK because it determines the quality of the overcurrent conduction capability in the battery module. It can also be said that the quality of the bus bar directly affects the performance of the entire battery system.

The lithium battery module comprises one or more modules, wherein a positive electrode and a negative electrode in one module are connected with the bus bar in a welding mode, and the modules are connected with the modules mostly through the pressure generated after the modules are compressed by the screw set and fixed together. The former key lies in avoiding leaking welding, rosin joint, spot explosion etc. spot welding badly, and the latter key lies in the torsion and the quantity of screw that the screw compresses tightly, and quantity can influence the confluence effect of module inadequately, causes bad consequences such as generate heat, and quantity is too much then can increase manufacturing cost, causes unnecessary extravagant.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell conflux piece to solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a lithium cell piece that converges, includes the module, module outer wall both sides all are provided with the piece that converges, converge all be provided with solid screw rod hole in piece and the module, be provided with cross recess and contact shell fragment on converging the piece, and contact shell fragment is located cross recess one side, piece one end that converges is provided with utmost point ear.

Preferably, the bus bar is made of nickel-plated steel material.

Preferably, the solid screw holes on the confluence piece and the module can be inserted with high-strength solid screws, and the contact of the contact spring pieces is reliable by applying pressure at two ends of the module by nuts at two ends of the screws.

Preferably, the positive electrode and the negative electrode of the module battery core are connected with the bus bar through four welding spots.

Preferably, the bus bar sheet is punched on the surface to generate a contact elastic sheet with elasticity.

Preferably, the contact spring pieces on the bus bar are arranged in a staggered mode.

Compared with the prior art, the beneficial effects of the utility model are that: the bus sheet and the module with corresponding sizes are selected according to the arrangement mode of the battery cell in the battery module, the support is fixed at two ends of the battery cell on the module, the bus sheet is positioned at two sides of the positions of the positive and negative electrode supports, the cross groove position on the bus sheet and the positive electrode and the negative electrode of the battery cell are positioned on the same straight line, the bus sheet and the positive electrode or the negative electrode of the battery cell on the module are welded together, the contact elastic sheet on the bus sheet of the adjacent module is positioned, the bus sheet can reliably contact with the nut at two ends of the whole module and the mutual pressure of the module. The utility model discloses a setting of a series of structures can the adjacent module of stable connection, reduces the connection cost between the module, improves assembly efficiency.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the bus bar in the module according to the present invention.

Fig. 2 is an overall schematic view of the bus bar of the present invention.

Fig. 3 is a front view of the bus bar of the present invention.

Fig. 4 is a side view of the bus bar of the present invention.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 2 according to the present invention.

Fig. 6 is an enlarged schematic view of a portion a of fig. 2 according to the present invention.

In the figure: 1. a module; 2. a confluence sheet; 3. a solid screw hole; 4. a cross-shaped groove; 5. a contact spring; 6. and (7) a tab.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 to 6, in an embodiment of the present invention, a lithium battery current collecting plate, including a module 1, both sides of an outer wall of the module 1 are provided with current collecting plates 2, both the current collecting plates 2 and the module 1 are provided with solid screw holes 3, the current collecting plates 2 are provided with cross grooves 4 and contact spring plates 5, and the contact spring plates 5 are located at one side of the cross grooves 4, one end of the current collecting plates 2 is provided with tabs 6, the current collecting plates 2 are made of nickel-plated steel material, the current collecting plates 2 and the solid screw holes 3 of the module 1 can be inserted with high-strength solid screws, module both ends pressure is applied by screws both ends nuts to make the contact spring plates 5 reliably contact, the current collecting plates 2 and the module 1 with corresponding sizes are selected according to an arrangement mode of battery cells in a battery module, supports are fixed at both ends of the battery cells on the module 1, the current collecting plates 2 are located at both sides of positions, The negative pole is positioned on the same straight line and is welded with the positive pole or the negative pole of the battery cell on the module 1, the contact elastic sheet 5 is positioned on the confluence sheet 2 of the adjacent module 1, the module 1 has positive and negative electrodes connected to the current collecting plate 2 via four welding spots, and a small-area tab 6 led out from the current collecting plate 2, used for connecting a voltage acquisition line, if the plane of the tab 6 is lower than the outer plane of the bracket or interferes with the bracket to a certain degree, the bus bar can be led out to a proper position by adopting a bending method, the bus bar piece 2 is punched on the surface to generate the elastic contact elastic sheet 5, so that the modules 1 are better contacted, the contact elastic sheets 5 on the bus bar piece 2 are staggered, the contact quantity is increased, the contact area is increased, and the bus bar reliability is improved.

The utility model discloses a theory of operation is: the utility model discloses a battery module, including module 1, the support is fixed in the both ends of the electric core on the module 1, the piece 2 that converges is located the both sides of positive negative pole support position, cross recess 4 positions and the electric core positive pole on the piece 2 that converges, the negative pole is located same straight line, with its and the anodal or negative pole welding of electric core on the module 1 together, be located the contact shell fragment 5 on the piece 2 that converges of adjacent module 1, can contact reliably under the mutual pressure of whole module both ends nut and module itself, and switch on current.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a lithium cell conflux sheet, includes module (1), its characterized in that, module (1) outer wall both sides all are provided with conflux sheet (2), all be provided with solid screw rod hole (3) on conflux sheet (2) and module (1), be provided with cross recess (4) and contact shell fragment (5) on conflux sheet (2), and contact shell fragment (5) are located cross recess (4) one side, conflux sheet (2) one end is provided with utmost point ear (6).

2. The lithium battery bus bar of claim 1, wherein the bus bar (2) is made of nickel-plated steel material.

3. The lithium battery bus bar of claim 1, wherein the bus bar (2) and the solid screw holes (3) of the module (1) are inserted with high-strength solid screws, and the contact spring (5) is reliably contacted by applying pressure on two ends of the module by nuts at two ends of the screws.

4. The lithium battery bus bar of claim 1, wherein the positive and negative electrodes of the cell of the module (1) are connected to the bus bar (2) by four welding points.

5. The lithium battery bus bar as claimed in claim 1, wherein the bus bar (2) is stamped to form a resilient contact spring (5) on the surface.

6. The lithium battery bus bar of claim 1, wherein the contact spring pieces (5) on the bus bar (2) are staggered.