CN216563349U

CN216563349U - Battery module

Info

Publication number: CN216563349U
Application number: CN202122981330.1U
Authority: CN
Inventors: 晏磊; 陈鑫; 刘思; 侯敏; 曹辉
Original assignee: Shanghai Ruipu Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-17
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a battery module, which belongs to the technical field of batteries and comprises a plurality of battery cores, wherein the battery cores are sequentially connected to form a battery core group, a front end plate is arranged at the front end of the battery core group, a rear end plate is arranged at the rear end of the battery core group, binding bands are respectively arranged on the left side and the right side of the battery core group, and two ends of each binding band are respectively welded on the front end plate and the rear end plate.

Description

Battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module.

Background

The battery module is lithium ion battery cell through the combination of series-parallel connection mode, and its structure plays support, fixed and guard action to electric core, and among the prior art, the casing of battery module mainly includes a pair of curb plate, a pair of end plate and roof, and two adjacent battery modules pass through end plate threaded connection and fix.

The curb plate among the current battery module wraps up electric core side completely, is unfavorable for the heat dissipation, has also leaded to part quantity simultaneously many, and the assembly is complicated, and curb plate and insulating layer are still fastener part quantity many, are unfavorable for realizing the automation of assembly, and production efficiency is low.

Patent document CN212392334U discloses a battery module and vehicle including this battery module, battery module includes casing assembly and installs the electric core group in casing assembly, casing assembly includes curb plate and end plate, curb plate detachably connects in the first face of electric core group, end plate detachably connects in the second face of electric core group, the second face sets up with first face is adjacent, and the end plate can be dismantled with the curb plate and be connected, the connection can be dismantled in having the curb plate in this design and adopting, be unfavorable for the heat dissipation of electric core on the one hand, on the other hand also leads to the increase of adapting unit, structural design is unreasonable.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, an object of the present invention is to provide a battery module.

The utility model provides a battery module, which comprises a plurality of battery cores;

the battery cores are sequentially connected to form a battery core group, a front end plate is arranged at the front end of the battery core group, and a rear end plate is arranged at the rear end of the battery core group;

the left side and the right side of the electric core group are respectively provided with a binding band, and the two ends of the binding band are respectively welded on the front end plate and the rear end plate.

Preferably, the number of the binding bands positioned at the left and right sides of the electric core group is the same.

Preferably, the front end plate and the rear end plate are both provided with end plate welding faces, and the end part of the binding band is connected with the front end plate and the rear end plate through the end plate welding faces in a welding mode.

Preferably, the outer surface of the strap is wrapped with a strap insulating layer.

Preferably, the front end plate and the rear end plate are respectively provided with a binding band welding and positioning structure, and the binding band welding and positioning structure positions the welding position of the binding band before the binding band is welded.

Preferably, the front end plate, the rear end plate and the binding band are made of metal materials.

Preferably, the adjacent battery cells are bonded.

Preferably, the battery module further comprises a front insulation buffer layer, the front insulation buffer layer is located between the battery core and the front end plate, and the front insulation buffer layer is respectively bonded with the battery core and the front end plate.

Preferably, the battery module further comprises a rear insulation buffer layer, the rear insulation buffer layer is located between the battery core and the rear end plate, and the rear insulation buffer layer is respectively bonded with the battery core and the rear end plate.

Preferably, an insulating buffer layer is arranged between the adjacent electric cores, and the insulating buffer layer is respectively bonded with the electric cores on the two sides.

Compared with the prior art, the utility model has the following beneficial effects:

1. the battery module in the utility model omits a part of a side plate, and has the advantages of less components, simple assembly, high production efficiency and lower cost.

2. Compared with the existing module, the equivalent product of the utility model has higher energy density.

3. The structure of the utility model which omits a side plate is more beneficial to the heat dissipation of the battery.

4. According to the utility model, the efficiency and the accuracy of the assembly of the binding band are improved by arranging the binding band welding and positioning structure, and the practicability is strong.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is an exploded view of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the welding connection of the binding band and the front end plate in the utility model;

FIG. 3 is a schematic view of the construction of the band of the present invention;

fig. 4 is a schematic structural view of a battery module in embodiment 2;

fig. 5 is an exploded view illustrating the structure of a battery module according to embodiment 2;

fig. 6 is a schematic structural view of a battery module according to embodiment 3;

fig. 7 is an exploded view illustrating the structure of a battery module according to embodiment 3;

fig. 8 is a schematic structural view of a structure for welding and positioning a binding band on a front end plate according to the present invention.

The figures show that:

welding surface 7 of end plate of battery cell 1

Front insulating buffer layer 2 binding band insulating layer 8

Rear insulating buffer layer 3 insulating buffer layer 9

Front end plate 4 weld scar 10

Rear end plate 5 bandage welding and positioning structure 11

Binding band 6

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

Example 1:

the utility model provides a battery module, as shown in fig. 1, 2 and 3, which comprises a plurality of battery cores 1, wherein the battery cores 1 are sequentially connected to form a battery core group, adjacent battery cores 1 are bonded, the front end of the battery core group is sequentially provided with a front insulating buffer layer 2 and a front end plate 4 along the forward direction, the rear end of the battery core group is sequentially provided with a rear insulating buffer layer 3 and a rear end plate 5 along the backward direction, the left side and the right side of the battery core group are respectively provided with a binding band 6, and the two ends of the binding band 6 are respectively welded on the front end plate 4 and the rear end plate 5.

In the specific design, the binding band 6 is made of metal, and the front end plate 4 and the rear end plate 5 are both made of metal.

The outer surface of the binding band 6 is preferably wrapped with a binding band insulating layer 8, and both ends of the binding band 6 are exposed and welded to the front end plate 4 and the rear end plate 5 as necessary for welding.

Specifically, the front end plate 4 and the rear end plate 5 are both provided with an end plate welding surface 7, the end portion of the binding band 6 is connected with the front end plate 4 and the rear end plate 5 through the end plate welding surface 7 in a welding mode, and welding scars 10 are formed at the connecting portions of the end portion of the binding band 6, the front end plate 4 and the rear end plate 5.

The number of the binding bands 6 on the left side and the right side of the electric core group is the same, so that the binding bands 6 with symmetrical number are arranged on the two sides of the electric core group, and the stability of fixing the electric core group is increased.

The front insulation buffer layer 2 is respectively bonded with the battery cell 1 and the front end plate 4, and the rear insulation buffer layer 3 is respectively bonded with the battery cell 1 and the rear end plate 5.

Preferably, an insulating buffer layer 9 is arranged between the adjacent electric cores 1, and the insulating buffer layer 9 is respectively bonded with the electric cores 1 on both sides.

Example 2:

this embodiment is a preferred embodiment of embodiment 1.

In the present embodiment, there are 4 binding bands 6, and as shown in fig. 4 and 5, two binding bands 6 are respectively disposed on the left and right sides of the electric core pack, and the binding bands 6 on both sides are symmetrically arranged.

In this embodiment, as shown in fig. 8, the front end plate 4 and the rear end plate 5 are respectively provided with a band welding and positioning structure 11, and the band welding and positioning structure 11 can position the welding position of the band 6 before the band 6 is welded. The bandage welding and positioning structure 11 preferably arranges one section or multiple sections at intervals along the height direction of the front end plate 4 and the rear end plate 5 so as to match the number of the bandages 6, so that the bandages 6 are quickly positioned, the assembly efficiency is improved, and the cost is reduced.

It should be noted that, in the same battery module, the height positions of the respective tie welding and positioning structures 11 on the front end plate 4 and the rear end plate 5 are the same, so that the mounted tie 6 is vertically arranged with the front end plate 4 and the rear end plate 5 at the two ends, and the strength and the stability of the assembled structure are improved.

Example 3:

this embodiment is another preferable embodiment of embodiment 1.

In the present embodiment, there are 6 binding bands 6, and as shown in fig. 6 and 7, three binding bands 6 are respectively disposed on the left and right sides of the electric core pack, and the binding bands 6 on both sides are symmetrically arranged.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A battery module is characterized by comprising a plurality of battery cores (1);

the battery cores (1) are sequentially connected to form a battery core group, the front end of the battery core group is provided with a front end plate (4), and the rear end of the battery core group is provided with a rear end plate (5);

the left side and the right side of the electric core group are respectively provided with a binding band (6), and the two ends of the binding band (6) are respectively welded on the front end plate (4) and the rear end plate (5).

2. The battery module according to claim 1, wherein the number of the bands (6) located at the left and right sides of the electric core pack is the same.

3. The battery module according to claim 1, wherein the front end plate (4) and the rear end plate (5) are provided with end plate welding surfaces (7), and the ends of the binding band (6) are welded to the front end plate (4) and the rear end plate (5) through the end plate welding surfaces (7).

4. The battery module according to claim 1, wherein the outer surface of the strap (6) is wrapped with a strap insulating layer (8).

5. The battery module according to claim 1, wherein the front end plate (4) and the rear end plate (5) are provided with a band welding and positioning structure (11), and the band welding and positioning structure (11) can position the welding position of the band (6) before the band (6) is welded.

6. The battery module according to claim 1, wherein the front end plate (4), the rear end plate (5) and the binding band (6) are made of metal.

7. The battery module according to claim 1, characterized in that, bonding between adjacent battery cores (1).

8. The battery module according to claim 1, characterized in that the battery module further comprises a front insulation buffer layer (2), the front insulation buffer layer (2) is located between the battery core (1) and the front end plate (4), and the front insulation buffer layer (2) is bonded with the battery core (1) and the front end plate (4) respectively.

9. The battery module according to claim 1, characterized in that the battery module further comprises a rear insulating buffer layer (3), the rear insulating buffer layer (3) is located between the battery core (1) and the rear end plate (5), and the rear insulating buffer layer (3) is bonded to the battery core (1) and the rear end plate (5) respectively.

10. The battery module according to claim 1, wherein an insulating buffer layer (9) is arranged between the adjacent battery cells (1), and the insulating buffer layers (9) are respectively bonded with the battery cells (1) on two sides.