CN220368066U

CN220368066U - Battery module

Info

Publication number: CN220368066U
Application number: CN202321464514.3U
Authority: CN
Inventors: 张增高; 李敏; 闻寅; 张文豪; 孙成浩; 刘赛求; 邓岚
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2024-01-19
Anticipated expiration: 2033-06-08

Abstract

The utility model relates to the technical field of power batteries, in particular to a battery module which comprises a battery cell group and a binding belt, wherein the battery cell group is bound up by the binding belt from the periphery, the height of the binding belt is greater than or equal to half of the height of the battery cell group, and a hollowed-out groove is formed in the binding belt along the length direction of the battery cell group. The original double-ribbon or multi-ribbon is changed into a ribbon with larger width, and the ribbon can be assembled and formed by only once assembling the battery module, so that the ribbon is wider, the pressure intensity of the side face of the battery cell group can be reduced, and the mechanical strength of the ribbon after the battery cell is deformed can be improved; in addition, a hollow groove is formed in the ribbon along the length direction of the battery cell group, so that the battery cell is prevented from expanding in the charging and discharging process, and the lightweight design is realized. Therefore, the utility model can solve the technical problems of complex assembly process of the battery cell, slow manufacturing beat and expansion phenomenon of the battery cell in the charge and discharge processes.

Description

Battery module

Technical Field

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

Background

The battery box is a group battery formed by a plurality of single batteries, a box body, a battery management system, related installation structural members and the like, and is provided with a battery box structure, battery box monitoring equipment, a battery box connector, battery box ring control equipment and the like which meet the standard. After the battery cells are stacked to form battery modules, the battery modules keep a certain size under the pressure of pressurizing equipment, the battery cells of each battery module are bundled together by using steel straps for conveniently forming a battery pack, the whole module is bundled by the steel straps through a positioning structure on an end plate, and finally the battery modules are baked and fixed, so that the battery cells are bonded and fixed.

The ribbon width of current electric core assembly is less, is two ribbon or many ribbon modes generally, leads to electric core assembly process loaded down with trivial details, and the manufacturing beat is slow, and the expansion phenomenon that the electric core produced in the in-process of charging and discharging moreover.

Disclosure of Invention

The utility model aims to provide a battery module, which is changed to a ribbon with larger width, and can solve the technical problems of complicated assembly process of a battery cell, slow manufacturing beat and expansion phenomenon of the battery cell in the charging and discharging processes.

In order to achieve the above purpose, the battery module comprises a battery cell group and a binding belt, wherein the binding belt binds the battery cell group from the periphery, the height of the binding belt is greater than or equal to half of the height of the battery cell group, and the binding belt is provided with a hollowed-out groove along the length direction of the battery cell group.

As a preferable scheme, the hollow grooves are internally provided with reinforcing ribs, and the reinforcing ribs are arranged in a crossing manner along the length direction of the hollow grooves.

As a preferable scheme, a plurality of groups of reinforcing ribs which are arranged in a crossing mode are arranged in the hollow groove.

Preferably, the thickness of the reinforcing rib ranges from 2mm to 6mm.

The strengthening rib can make the ribbon pass power from top to bottom for upper and lower part atress is even, avoids the ribbon upper portion deformation too big.

As a preferable scheme, the binding belt is provided with hollow grooves along the two sides of the length direction of the battery cell group.

Preferably, the length of the hollow groove is equal to the length of the battery cell group.

Preferably, the ribbon is disposed near a bottom side of the battery cell group.

Preferably, the height of the ribbon from the top of the battery cell group is 1.2-1.5 times the height from the bottom of the battery cell group.

Because the upper part of the battery cell group is stressed more than the lower part in the later stage, the cable tie is arranged close to the bottom of the battery cell group, so that the upper part of the battery cell can be prevented from expanding and deforming.

Preferably, the battery pack further comprises an end plate, and the end plate is arranged between the battery pack and the ribbon along the width direction of the battery pack.

The utility model has the beneficial effects that:

according to the battery module, the original double-ribbon or multi-ribbon is changed into the ribbon with larger width, and the ribbon can be assembled and formed by only once assembling, so that the number of parts is reduced, the material cost is reduced, the assembling process is simplified, the manufacturing beat is improved, and the ribbon is wider, so that the pressure intensity of the side face of the battery cell group can be reduced, and the mechanical strength of the ribbon after the battery cell is deformed can be improved; in addition, a hollow groove is formed in the ribbon along the length direction of the battery cell group, so that the battery cell is prevented from expanding in the charging and discharging process, and the lightweight design is realized. Therefore, the utility model can solve the technical problems of complex assembly process of the battery cell, slow manufacturing beat and expansion phenomenon of the battery cell in the charge and discharge processes.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic perspective view of the band.

Reference numerals illustrate:

1-cell group, 2-ribbon, 3-end plate, 4-hollowed groove and 5-reinforcing rib.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model relates to a battery module, which comprises a battery cell group 1 and a binding belt 2, wherein the binding belt 2 binds the battery cell group 1 from the periphery, the height of the binding belt 2 is more than or equal to half of the height of the battery cell group 1, and the binding belt 2 is provided with a hollowed-out groove 4 along the length direction of the battery cell group 1.

The strengthening ribs 5 are arranged in the hollowed-out grooves 4, the strengthening ribs 5 are arranged in an X-shaped mode along the intersecting direction of the length direction of the hollowed-out grooves 4, force can be transferred from top to bottom through the binding tape, the stress of the upper portion and the lower portion is uniform, and the deformation of the upper portion is avoided being too large. The hollow groove 4 is internally provided with a plurality of groups of reinforcing ribs 5 which are arranged in a crossing way, and a certain distance is reserved between every two groups of reinforcing ribs. The thickness of the reinforcing ribs 5 is in the range of 2mm to 6mm, preferably 4mm.

The ribbon 2 is followed the fretwork groove 4 is all offered to electric core group 1 length direction's both sides. The length of the hollowed-out groove 4 is equal to that of the battery cell group 1, and arc chamfer angles are arranged on two sides of the hollowed-out groove 4, so that the battery cell is prevented from being expanded in the charging and discharging process, and the binding belt is prevented from being broken.

The ribbon 2 is arranged on one side close to the bottom of the battery cell group 1. The height of the binding belt 2 from the top of the battery cell group 1 is 1.2-1.5 times of the height from the bottom of the battery cell group 1. Because the upper part of the battery cell group is stressed more than the lower part in the later stage, the cable tie 2 is arranged close to the bottom of the battery cell group 1, so that the upper part of the battery cell can be prevented from expanding and deforming.

The battery module further comprises an end plate 3, and the end plate 3 is arranged between the battery cell group 1 and the ribbon 2 along the width direction of the battery cell group 1.

The installation process comprises the following steps:

when the battery cell is assembled, single battery cells are stacked in groups in a battery box body to form a battery cell group 1, a cover plate is arranged at the upper end of the battery cell group 1, the battery cells are stacked to a specified thickness, then, end plates 3 are assembled, two end plates 3 are respectively arranged on two sides of the battery cell group 1 in the width direction, the end plates 3 are fastened by using a binding belt 2 after being assembled, and the battery cell group 1 and the end plates 3 are bound from the periphery by using the binding belt 2 to form a battery module.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A battery module, characterized in that: including electric core group (1), ribbon (2) will electric core group (1) is tied up all around, the height of ribbon (2) is greater than or equal to electric core group (1) highly half, ribbon (2) are followed electric core group (1) length direction sets up fretwork groove (4).

2. The battery module according to claim 1, wherein: reinforcing ribs (5) are arranged in the hollowed-out grooves (4), and the reinforcing ribs (5) are arranged in a crossing mode along the length direction of the hollowed-out grooves (4).

3. The battery module according to claim 2, wherein: a plurality of groups of reinforcing ribs (5) which are arranged in a crossing mode are arranged in the hollowed-out groove (4).

4. The battery module according to claim 3, wherein: the thickness range of the reinforcing ribs (5) is 2 mm-6 mm.

5. The battery module according to claim 1, wherein: the ribbon (2) is provided with hollow grooves (4) along two sides of the length direction of the battery cell group (1).

6. The battery module according to claim 5, wherein: the length of the hollowed-out groove (4) is equal to the length of the battery cell group (1).

7. The battery module according to claim 1, wherein: the ribbon (2) is arranged on one side close to the bottom of the battery cell group (1).

8. The battery module according to claim 7, wherein: the height of the binding belt (2) from the top of the battery cell group (1) is 1.2-1.5 times the height from the bottom of the battery cell group (1).

9. The battery module according to any one of claims 1 to 8, wherein: the battery cell structure further comprises an end plate (3), wherein the end plate (3) is arranged between the battery cell group (1) and the binding belt (2) along the width direction of the battery cell group (1).