CN214706160U

CN214706160U - Battery case cover for lithium battery

Info

Publication number: CN214706160U
Application number: CN202120675255.3U
Authority: CN
Inventors: 张强; 李亮; 贾东财; 李坤; 傅建; 刘瑞
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-12
Anticipated expiration: 2031-04-01

Abstract

The utility model discloses a battery box cover for a lithium battery, which comprises a big box cover and a small box cover, wherein the small box cover is arranged at the top of the big box cover; big case lid includes big case lid body and the anodal post with battery box joint, the negative pole post, anodal connection piece and negative pole connection piece, the mounting hole has been seted up on the big case lid body, the sealed lid of little case lid is established on the mounting hole, anodal post one end sets up at big case lid body top, anodal connection piece is connected to the other end, negative pole post one end sets up at big case lid body top, the negative pole connection piece is connected to the other end, the one end that anodal post was kept away from to anodal connection piece and the one end that negative pole post was kept away from to the negative pole connection piece all set up in the mounting hole bottom. The utility model has the advantages of, this battery box lid simple structure closes the lid process and does not need upset battery module, and assembly efficiency improves greatly, also need not reserve longer connecting wire, and big case lid and battery module can be stably connected, guarantee the security of lithium cell.

Description

Battery case cover for lithium battery

Technical Field

The utility model relates to a lithium cell technical field specifically is a battery case lid that lithium cell was used.

Background

With the continuous popularization of new energy automobiles, the application requirements of lithium battery low-voltage batteries for electric automobiles are also increasing. Compared with the traditional lead-acid low-voltage battery for the vehicle, the lithium-ion low-voltage battery is lighter in weight and higher in economic benefit. However, in the production and assembly process of the lithium battery low-voltage battery, certain problems exist in system electrical connection. General battery includes the box, the module, and upper cover isotructure is at the assembling process, will be connected the high pressure to the positive pole utmost point post and the negative pole utmost point post of upper cover with system's high pressure through connecting the copper bar on, nevertheless under how guaranteeing system seal's the prerequisite, better connects, faces very big challenge. Some solutions are also provided in the industry, for example, the module is firstly connected with the upper cover, then the cover is closed and the box is sealed, and the system assembly is carried out in an inverted mode, but the module needs to be turned over for many times in the assembly process, so that the operation is very inconvenient, and the production efficiency is also influenced. Also consider to put into the box with the module after, just adorn the mode of being connected with the upper cover again, nevertheless need reserve longer connecting wire, can't fix the fine of connecting wire harness after closing the lid, have the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model discloses how to solve technical problem lies in improving lithium cell assembly efficiency and security.

In order to solve the technical problem, the utility model provides a following technical scheme:

a battery box cover for a lithium battery comprises a large box cover and a small box cover, wherein the small box cover is arranged at the top of the large box cover.

Big case lid includes big case lid body and anodal post, negative pole post, anodal connection piece and the negative pole connection piece with battery box joint, the mounting hole has been seted up on the big case lid body, little case lid seals the lid and establishes on the mounting hole, anodal post one end sets up at big case lid body top, and the other end all runs through big case lid body and connects anodal connection piece, negative pole post one end sets up at big case lid body top, and the other end all runs through big case lid body and connects the negative pole connection piece, the one end that anodal post was kept away from to anodal connection piece and the one end that negative pole post was kept away from to the negative pole connection piece all set up in the mounting hole bottom.

Specifically, in the process of installing the battery, the battery module is placed in the battery box body firstly, then the large box cover body is covered at the top of the battery box body, one end of the positive connecting piece and one end of the negative connecting piece are arranged at the bottom of the installing hole, and the positive connecting piece and the negative connecting piece can be correspondingly connected with the positive connecting point and the negative connecting point on the battery module from the installing hole, so that the connection between the large box cover and the battery module is realized, and finally, the small box cover sealing cover is arranged in the installing hole to realize the cover closing of the battery box cover; this battery box lid simple structure closes the lid process and need not overturn the battery module, and assembly efficiency improves greatly, also need not reserve longer connecting wire, and big case lid can be stably connected with the battery module, guarantees the security of lithium cell.

Preferably, all be equipped with the first joint hole with battery box joint around the big case lid body.

Preferably, the bottom of big case lid body encloses and is equipped with the first tongue piece structure with battery box joint.

Preferably, the inner wall of the mounting hole is provided with a plurality of male buckles clamped with the small box cover.

Preferably, the bottom of the small box cover is provided with a female buckle matched with the male buckle.

Preferably, the big case cover body is provided with a clamping groove which is arranged around the periphery of the mounting hole, and the bottom of the small case cover is hermetically clamped on the clamping groove.

Preferably, the bottom of the small box cover is provided with a second tongue piece mechanism clamped with the clamping groove.

Preferably, the positive pole and the positive connecting piece and the negative pole and the negative connecting piece are all connected in a welding mode.

Compared with the prior art, the beneficial effects of the utility model are that:

in the process of installing a battery, a battery module is placed in a battery box body, then a large box cover body is covered at the top of the battery box body, one end of a positive connecting sheet and one end of a negative connecting sheet are arranged at the bottom of an installing hole, the positive connecting sheet and the negative connecting sheet can be correspondingly connected with a positive connecting point and a negative connecting point on the battery module from the installing hole, so that the large box cover is connected with the battery module, and finally a small box cover sealing cover is arranged in the installing hole to realize the cover closing of the battery box cover; this battery box lid simple structure closes the lid process and need not overturn the battery module, and assembly efficiency improves greatly, also need not reserve longer connecting wire, and big case lid can be stably connected with the battery module, guarantees the security of lithium cell.

Drawings

Fig. 1 is a schematic view of an installation structure of an embodiment of the utility model;

FIG. 2 is a schematic structural view of a large cover of an embodiment of the present invention;

FIG. 3 is another schematic structural view of the large lid of the embodiment of the present invention;

fig. 4 is a schematic structural view of a small box cover according to an embodiment of the present invention.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings attached to the specification.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3, the present embodiment discloses a battery case cover for a lithium battery, which includes a large case cover 1 and a small case cover 2, wherein the small case cover 2 is sealed and disposed on the top of the large case cover 1.

Big case lid 1 includes big case lid body 11 and anodal post 12, negative pole post 13, anodal connection piece 14 and negative pole connection piece 15 with 3 joints of battery box, mounting hole 111 has been seted up on big

case lid body

11, 2 sealed lids of little case lid are established on mounting hole 111, anodal post 12 one end sets up at big case lid body 11 top, and the other end all runs through big case lid body 11 and welded connection

anodal connection piece

14, 13 one end settings of negative pole post are at big case lid body 11 top, and the other end all runs through big case lid body 11 and welded connection negative pole connection piece 15, the one end that anodal post 12 was kept away from to anodal connection piece 14 and the one end that negative pole post 13 was kept away from to negative pole connection piece 15 all set up in mounting hole 111 bottom.

Specifically, in the process of installing the battery, the battery module is placed in the battery box body 3, then the large box cover body 11 is covered on the top of the battery box body 3, one end of the positive connecting piece 14 and one end of the negative connecting piece 15 are arranged at the bottom of the installing hole 111, the positive connecting piece 14 and the negative connecting piece 15 can be correspondingly connected with a positive connecting point and a negative connecting point on the battery module from the installing hole 111, so that the connection between the large box cover 1 and the battery module is realized, and finally the small box cover 2 is sealed and arranged in the installing hole 111 to realize the cover closing of the battery box cover; this battery box lid simple structure closes the lid process and need not overturn the battery module, and assembly efficiency improves greatly, also need not reserve longer connecting wire, and big case lid 1 can be stably connected with the battery module, guarantees the security of lithium cell.

Further, all be equipped with all around big case lid body 11 with the first joint hole 112 of battery box 3 joint, the bottom of big case lid body 11 encloses the first tongue piece structure 113 that is equipped with battery box 3 joint, through first tongue piece structure 113 joint to the joint notch on the battery box 3 to seal with sealed glue, guarantee big case lid body 11 and battery box 3's sealing connection.

Furthermore, a plurality of male buckles 114 are arranged on the inner wall of the mounting hole 111, and a clamping groove 115 surrounding the mounting hole 111 is arranged on the large box cover body 11; referring to fig. 4, the bottom of the small box cover 2 is provided with a female buckle 21 matched with the male buckle 114, the bottom of the small box cover 2 is further provided with a second tongue piece mechanism 22 clamped with the clamping groove 113, specifically, the male buckle 114 is matched with the female buckle 21 in a clamping manner, and meanwhile, the second tongue piece mechanism 22 is clamped in the clamping groove 113 and sealed by sealant, so that the small box cover 2 is ensured to be capable of sealing the mounting hole 111.

The utility model discloses an assembly process as follows: firstly, a battery module is arranged in a battery box body 3, and then a positive pole column 12 on a big box cover 1 is connected with a positive pole connecting sheet 14 in a welding way and a negative pole column 13 is connected with a negative pole connecting sheet 15 in a welding way; injecting sealant into the clamping notch on the battery box body 3, then covering the big box cover 1 on the box body 1, so that the first clamping hole 112 is clamped with the battery box body 3 and the first tongue piece structure 113 is clamped on the clamping notch on the battery box body 3, thereby realizing the sealing installation of the big box cover 1, then correspondingly connecting the positive connecting sheet 14 and the negative connecting sheet 15 with the positive connecting point and the negative connecting point on the battery module from the mounting hole 111, thereby realizing the connection of the big box cover 1 and the battery module, then injecting the sealant into the clamping groove 115, finally covering the small box cover 2 on the big box cover 1, so that the female buckle 21 is clamped and matched with the male buckle 114, the second tongue piece mechanism 22 is clamped and connected with the clamping groove 113 in a sealing manner, and finally completing the installation of the lithium battery.

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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The above embodiments only show the embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.

Claims

1. The utility model provides a battery case lid that lithium cell was used which characterized in that: the box cover comprises a large box cover and a small box cover, wherein the small box cover is arranged on the top of the large box cover;

2. The battery case cover for a lithium battery as claimed in claim 1, wherein: all be equipped with the first joint hole with battery box joint around the big case lid body.

3. The battery case cover for a lithium battery as claimed in claim 1, wherein: the bottom of big case lid body encloses and is equipped with the first tongue piece structure with battery box joint.

4. The battery case cover for a lithium battery as claimed in claim 1, wherein: and a plurality of male buckles clamped with the small box cover are arranged on the inner wall of the mounting hole.

5. The battery case cover for a lithium battery as claimed in claim 4, wherein: and a female buckle matched with the male buckle is arranged at the bottom of the small box cover.

6. The battery case cover for a lithium battery as claimed in claim 1, wherein: the big box cover body is provided with a clamping groove which is arranged on the periphery of the mounting hole in a surrounding mode, and the bottom of the small box cover is connected to the clamping groove in a sealing and clamping mode.

7. The battery case cover for a lithium battery as claimed in claim 6, wherein: and a second tongue piece mechanism clamped with the clamping groove is arranged at the bottom of the small box cover.

8. The battery case cover for a lithium battery as claimed in claim 1, wherein: the positive pole column and the positive connecting piece and the negative pole column and the negative connecting piece are all in welded connection.