CN221176435U

CN221176435U - Welding interference prevention battery module assembly structure

Info

Publication number: CN221176435U
Application number: CN202322766117.8U
Authority: CN
Inventors: 陆俊良; 胡维斌; 张云
Original assignee: Hengyang Ruiqi New Energy Co ltd
Current assignee: Hengyang Ruiqi New Energy Co ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-06-18
Anticipated expiration: 2033-10-16

Abstract

The application is suitable for the technical field of batteries, and provides a welding interference prevention battery module assembly structure. The structure comprises at least two fixing frames, wherein a containing area is formed between the two fixing frames, and the fixing frames are of an embedded structure; the lithium battery component is accommodated in the accommodating area and comprises at least two battery core units; the plastic steel belt is arranged on the outer wall of the fixing frame and the lithium battery component in a surrounding manner. According to the application, the fixing frame is of the mosaic structure, so that the welding of the fixing frame to the lithium battery assembly by the welding machine can be avoided, the fixing frames are arranged on two sides of the lithium battery assembly, the plastic steel belt is annularly arranged on the outer walls of the lithium battery assembly and the side plates, and the risk of battery cell swelling caused by welding is avoided.

Description

Welding interference prevention battery module assembly structure

Technical Field

The utility model relates to the technical field of batteries, in particular to a welding interference prevention battery module assembly structure.

Background

The battery module among the prior art includes electric core and division board to still be provided with fixed assembly structure, this structure is through passing through the glued paper tape with electric core and division board fixedly, then carry out the connecting piece that has with electric core welded connection, the battery module after will welding is accomplished at last and curb plate installation, the curb plate sets up in battery module's both sides respectively, battery module has the plastic to take with the curb plate outer arm to tie up. However, the above-mentioned battery cell is fixed with the partition plate, and the battery module is fixed with the side plate: the side plate is of an integral structure, and the height of the side plate is far higher than that of the battery cell, so that the side plate can interfere welding of the welding machine to the connecting piece, and production efficiency is reduced. In addition, the battery module is fixed first and then welded, and then the battery module and the side plates are bound, so that the shearing stress of the connecting piece can be caused due to the fixed structure of the battery module and the side plates, and the use risk of the battery is increased.

Disclosure of utility model

The aim of the embodiment of the application is that: the utility model provides a prevent welding interference's battery module assembly structure, aims at solving the welding of curb plate interference welding machine to the connecting piece among the relevant technique to tie up the electric core after the welding and cause the connecting piece to have shear stress, arouse the technical problem of the use risk of battery.

In order to achieve the above purpose, the application adopts the following technical scheme:

a welding interference prevention battery module assembly structure, comprising:

At least two fixing frames, wherein a containing area is formed between the two fixing frames, the fixing frames are of an embedded structure, and each fixing frame comprises a side plate and a side lug which is inserted with the side plate;

the lithium battery component is accommodated in the accommodating area and comprises at least two battery core units;

the plastic steel belt is arranged on the outer wall of the side plate and the lithium battery component in a surrounding way.

Preferably, the side plates are provided with fixing grooves matched with the plastic steel belts.

Preferably, at least two side ears are symmetrically arranged on two sides of the top of the side plate.

Preferably, the side lugs are provided with lugs, and the side plates are provided with grooves which are matched and spliced with the lugs.

Preferably, one end face of each side lug is a plane, and the other end face is a hollowed-out grid structure.

Preferably, one side surface of the side plate is attached to the battery cell unit, and the other side surface of the side plate is provided with a hollowed-out grid structure.

Preferably, the battery cell units are provided with positive electrode posts and negative electrode posts, and the battery cell units are arranged in an array manner along the width direction in any combination to form the lithium battery assembly.

Preferably, the lithium battery assembly further comprises a separation plate, the separation plate is arranged between two adjacent battery core units, and the same sides of the two battery core units are positive electrode posts and negative electrode posts.

Preferably, the lithium battery assembly further comprises a connecting piece, one end of the connecting piece is connected to the positive electrode post of one cell unit, and the other end of the connecting piece is connected to the negative electrode post of the other cell unit, so that at least two cell units are connected in series.

Preferably, the length of the fixing frame is greater than the length of the battery cell unit.

Compared with the prior art, the application has the following beneficial effects:

Comprising the following steps: at least two fixing frames, wherein a containing area is formed between the two fixing frames, the fixing frames are of an embedded structure, and each fixing frame comprises a side plate and a side lug which is inserted with the side plate; the lithium battery component is accommodated in the accommodating area and comprises at least two battery core units; the plastic steel belt is arranged on the outer wall of the side plate and the lithium battery component in a surrounding way. According to the application, the fixing frames are arranged on two sides of the lithium battery assembly, the fixing frames are in a splicing structure, the plastic steel belts are arranged on the outer walls of the lithium battery assembly and the side plates in a surrounding mode, so that the whole plastic steel belts are directly bundled and then welded, and finally the side lugs are inserted into the side plates, the fixing frames can be prevented from interfering the welding of the welding machine on the lithium battery assembly, and meanwhile, the risk of battery cells caused by swelling of the battery cells due to welding is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of the present utility model;

Fig. 2 is a schematic structural view of a fixing frame in the present utility model.

Reference numerals related to the above figures are as follows:

1-a fixing frame, 11-a side plate, 12-a side lug, 13-a fixing groove, 14-a lug and 15-a groove;

2-accommodation region;

The lithium battery comprises a 3-lithium battery component, a 31-battery core unit, a 32-positive electrode post, a 33-negative electrode post, a 34-separator and a 35-connecting piece;

4-plastic steel belt.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two). In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

In order to solve the problems of the background technology, the inventor has conducted intensive studies to design a battery module assembly structure for preventing welding interference; the battery module assembly structure for preventing welding interference provided by the embodiment of the application is explained in detail below.

As shown in fig. 1 to 2, a battery module assembly structure preventing welding interference, includes: at least two fixing frames 1, wherein a containing area 2 is formed between the two fixing frames 1, the fixing frames 1 are of an embedded structure, and each fixing frame 1 comprises a side plate 11 and a side lug 12 which is inserted with the side plate 11; a lithium battery assembly 3 accommodated in the accommodation area 2, the lithium battery assembly 3 including at least two battery cells 31; the plastic steel belt 4 is arranged around the side plate 11 and the outer wall of the lithium battery component 3. Through setting up mount 1 as curb plate 11 and side ear 12 and inlay the makeup formula structure, effectively solved the mutual interference of welding machine and mount 1, the rethread is fastened the curb plate 11 of mount 1 with lithium cell assembly 3 earlier with plastic steel area 4, has guaranteed that electric core unit 31 ties up firmly, and the welding with electric core unit 31 and connecting piece 35 is reliable.

Further, the side plate 11 and the side lug 12 of the present embodiment are of a split structure, and the side plate 11 is provided with a fixing groove 13 matched with the plastic steel belt 4, so that the side plate 11 can be installed first and fixed with the lithium battery assembly 3 without affecting the insertion of the last side lug 12 and the side plate 11.

Further, at least two side ears 12 in this embodiment are symmetrically disposed on two sides of the top of the side plate 11, two fixing frames 1 are respectively disposed on two sides of the lithium battery assembly 3, and the side ears 12 may be configured in a Y-shape structure or may be configured according to actual requirements.

Further, the lug 12 of this embodiment is provided with the lug 14, and the lug 14 sets up in the bottom of lug 12, and curb plate 11 is provided with the recess 15 of pegging graft with the lug 14 cooperation, and recess 15 sets up in the top of curb plate, and lug 14 and recess 15 all have two at least, and unsmooth cooperation can increase the fastness of mount 1.

Further, one end face of the side ear 12 of the embodiment is a plane, the plane structure can be attached to an internal component of the lithium battery, damage to the battery cell unit 31 and other components is avoided, the other end face is a hollow grid structure, and the hollow grid structure can enable the lithium battery to effectively dissipate heat.

Further, the battery cell unit 31 is attached to one side surface of the side plate 11 in this embodiment, so that the plastic steel belt 4 ensures that the lithium battery assembly 3 is tightly bound when the locking lithium battery assembly 3 and the fixing frame 1 are annularly arranged, the hollow grid-shaped structure is arranged on the other side surface of the side plate 11, and the hollow grid-shaped structure of the side plate 11 and the side lugs 12 form a heat dissipation structure of the lithium battery.

Further, the battery cells 31 of the present embodiment are provided with positive electrode posts 32 and negative electrode posts 33, and the battery cells 31 are arranged in an array along the width direction in any combination, and in the present embodiment, the two battery cells 31 are arranged in parallel, i.e. the two battery cells 32 are arranged on the same side as each other in a cross distribution manner, i.e. the two battery cells 33 are arranged on the same side as each other in a cross connection manner.

Further, the lithium battery module 3 of the present embodiment further includes a separator 34, where the separator 34 is disposed between two adjacent cells 31, in the present embodiment, the separator is disposed between the cells 31 that are adjacent to each other on the same side and are the negative electrode post 33 and the positive electrode post 32, the separator 34 is made of an insulating material and has the same size as the side area of the cells 31, and it should be noted that the separator 34 is made of an insulating material, and in the present embodiment, is an epoxy plate, and may also be disposed according to actual requirements.

Further, the lithium battery assembly 3 of this embodiment further includes a connecting member 35, where the connecting member 35 is fixedly disposed at the top of at least two of the battery cells 31 so that at least two of the battery cells 31 are connected in series, one end of the connecting member 35 is fixedly connected with the positive electrode post 32 of the battery cell 31, and the other end of the connecting member 35 is fixedly connected with the negative electrode post 33 of the battery cell 31, and it is to be noted that the connecting member 35 is used for communicating two battery cells 31, and in this embodiment may be disposed as an aluminum row, or may be disposed according to actual requirements.

Further, the length of the fixing frame 1 of the present embodiment is greater than the length of the battery cell 31, and the height of the side plate 11 is the same as the height of the battery cell 31, which is beneficial to better splicing the side ears 12, and the size of the side ears 12 can be set according to the actual requirement.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; the technical features mentioned in the embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A battery module assembly structure of preventing welding interference, characterized by comprising:

the fixing frames (1) are at least two, a containing area (2) is formed between the two fixing frames (1), the fixing frames (1) are of an embedded structure, and each fixing frame (1) comprises a side plate (11) and a side lug (12) which is inserted with the side plate (11);

A lithium battery assembly (3) accommodated in the accommodating area (2), wherein the lithium battery assembly (3) comprises at least two electric core units (31);

And the plastic steel belt (4) is arranged around the side plate (11) and the outer wall of the lithium battery component (3).

2. The welding interference prevention battery module assembly structure according to claim 1, wherein the side plate (11) is provided with a fixing groove (13) that is fitted with the plastic steel belt (4).

3. The welding interference prevention battery module assembly structure according to claim 2, wherein at least two of the side ears (12) are symmetrically disposed on both sides of the top of the side plate (11).

4. A welding interference prevention battery module assembly structure according to claim 3, wherein the side ears (12) are provided with projections (14), and the side plates (11) are provided with grooves (15) which are in fit connection with the projections (14).

5. The welding interference preventing battery module assembly structure according to claim 4, wherein one end surface of the side tab (12) is a plane, and the other end surface is a mesh-like structure.

6. The welding interference prevention battery module assembly structure according to claim 2, wherein one side surface of the side plate (11) is attached to the battery cell unit (31), and the other side surface of the side plate (11) is provided with a grid structure.

7. The welding interference prevention battery module assembly structure according to claim 1, wherein the battery cell units (31) are provided with positive electrode posts (32) and negative electrode posts (33), and at least two of the battery cell units (31) are arranged in an array in a width direction in any combination to form the lithium battery assembly (3).

8. The welding interference prevention battery module assembly structure according to claim 7, wherein the lithium battery assembly (3) further comprises a separation plate (34), the separation plate (34) is arranged between two adjacent battery core units (31), and the same sides of the two battery core units (31) are a positive electrode pole (32) and a negative electrode pole (33).

9. The welding interference prevention battery module assembly structure according to claim 8, wherein the lithium battery assembly (3) further comprises a connecting member (35), one end of the connecting member (35) is connected to the positive electrode post (32) of one of the battery cells (31), and the other end of the connecting member (35) is connected to the negative electrode post (33) of the other battery cell (31) so that at least two battery cells (31) are connected in series.

10. The welding interference prevention battery module assembly structure according to claim 1, wherein the length of the fixing frame (1) is greater than the length of the battery cell unit (31).