CN213026275U

CN213026275U - Lithium ion battery with novel structure

Info

Publication number: CN213026275U
Application number: CN202022211711.7U
Authority: CN
Inventors: 樊有佑; 龚纯飞
Original assignee: Longyan Jiabangfu New Energy Technology Co ltd
Current assignee: Longyan Jiabangfu New Energy Technology Co ltd
Priority date: 2020-10-04
Filing date: 2020-10-04
Publication date: 2021-04-20
Anticipated expiration: 2030-10-04

Abstract

The utility model discloses a lithium ion battery with a novel structure, which comprises a shell, an electric core arranged in the shell and an anode head iron cover arranged at one end of the shell, wherein the electric core comprises a columnar body, and an anode tab and a cathode tab which are connected with the two ends of the columnar body; the number of the positive electrode tabs and the number of the negative electrode tabs are two or more respectively; the surface of the positive head iron cover facing the positive pole lug is provided with a first clamping part clamped with the positive pole lug; a second clamping part clamped with a negative pole lug is arranged on the inner side surface of the negative pole end of the shell; the first clamping portion and the second clamping portion are arranged in one-to-one correspondence with the positive electrode lug and the negative electrode lug. The utility model is provided with a first clamping part and a second clamping part respectively on one surface of the iron cover of the anode head part close to the iron core and the inner side surface of the lower end of the lower shell; the positive electrode lug and the negative electrode lug are detachably connected with the first clamping part and the second clamping part respectively to replace the traditional welding mode, so that the replacement of the battery cell is realized.

Description

Lithium ion battery with novel structure

Technical Field

The utility model relates to a battery technology field especially relates to a lithium ion battery of novel structure.

Background

The existing lithium ion battery adopts an integrated non-detachable structure, and the battery with the structure can not be continuously used due to the consumption of a battery core after being used for a long time, so that the battery is discarded; the battery can be continuously used as long as an old battery core is replaced by a manufacturer, but the battery can be disassembled only by disassembling the battery due to the limitation of the structural design of the battery and the welding mode adopted by the anode tab and the cathode tab of the battery core, so that the replacement of the battery core and the secondary utilization of a waste battery can not be realized.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a lithium ion battery with a novel structure to solve the problem that the electric core of the lithium ion battery can not be replaced and the waste battery can not be reused.

The utility model discloses the technical scheme who adopts as follows:

a lithium ion battery with a novel structure comprises a shell, an electric core arranged in the shell and an iron cover at the head part of a positive electrode arranged at one end of the shell, and is characterized in that the electric core comprises a columnar body, and a positive electrode lug and a negative electrode lug which are connected with the two ends of the columnar body; the number of the positive electrode tabs and the number of the negative electrode tabs are two or more respectively; the surface of the positive head iron cover facing the positive pole lug is provided with a first clamping part clamped with the positive pole lug; a second clamping part clamped with a negative pole lug is arranged on the inner side surface of the negative pole end of the shell; the first clamping portion and the second clamping portion are arranged in one-to-one correspondence with the positive electrode lug and the negative electrode lug.

Preferably, the housing comprises an upper housing and a lower housing which are detachable; a round through hole is formed in the middle of the upper end face of the upper shell; the positive head iron cover is detachably connected with the upper shell, and one end, far away from the battery cell, of the positive head iron cover penetrates through the circular through hole to the outer side of the upper shell.

Preferably, the connection part of the upper shell and the lower shell is respectively provided with a first limiting rib and a first limiting groove which are mutually clamped.

Preferably, the connection position of the iron cover at the head part of the positive electrode and the inner side of the upper shell is respectively provided with a second limiting groove and a second limiting rib which are clamped with each other.

Preferably, a sealing ring is arranged between the upper shell and the iron cover of the positive head.

Preferably, buffering parts are respectively arranged between the battery cell and the iron cover of the positive head part and between the battery cell and the inner surface of the lower end of the lower shell.

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

the utility model is provided with a first clamping part and a second clamping part respectively on one surface of the iron cover of the anode head part close to the iron core and the inner side surface of the lower end of the lower shell; the positive electrode lug and the negative electrode lug are detachably connected with the first clamping part and the second clamping part respectively in a clamping manner to replace the traditional welding manner; and meanwhile, the shell consists of a detachable upper shell and a detachable lower shell, the upper shell and the iron cover at the head part of the anode adopt a detachable connection mode, and replacement of the battery core and secondary utilization of the waste battery are realized through the detachable structure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

wherein: the battery comprises a shell 1, a battery cell 2, an anode head iron cover 3, a first clamping part 4, a second clamping part 5, a sealing ring 6, a buffer part 7, an upper shell 11, a lower shell 12, a columnar body 21, an anode tab 22, a cathode tab 23, a circular through hole 111, a first limiting rib 112, a second limiting rib 113, a first limiting groove 121 and a second limiting groove 31.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "front," "back," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, a lithium ion battery with a novel structure comprises a casing 1, a battery cell 2 disposed in the casing 1, and a positive head iron cover 3 disposed at one end of the casing 1, wherein the battery cell 2 includes a cylindrical body 21, and a positive electrode tab 22 and a negative electrode tab 23 connected to two ends of the cylindrical body 21; the number of the positive electrode tabs 22 and the number of the negative electrode tabs 23 are two or more respectively; the surface of the positive head iron cover 3 facing the positive pole lug 22 is provided with a first clamping part 4 clamped with the positive pole lug 22; a second clamping part 5 clamped with a negative pole lug 23 is arranged on the inner side surface of the negative pole end of the shell 1; the first engaging portion 4 and the second engaging portion 5 are provided in one-to-one correspondence with the positive electrode tab 22 and the negative electrode tab 23.

In this embodiment, the first engaging portion 4 and the second engaging portion 5 are provided on one surface of the positive head iron cover 3 close to the iron core 2 and the inner surface of the lower end of the lower housing 11, respectively; the positive electrode tab 22 and the negative electrode tab 23 adopt a detachable clamping connection mode with the first clamping part 4 and the second clamping part 5 respectively to replace the traditional welding mode; when the lithium ion battery needs to replace the battery core, only the positive electrode tab 22 and the first clamping part 4 which are mutually clamped are required to be detached from the negative electrode tab 23 and the second clamping part 5, so that the battery core 2 of the battery can be replaced, and meanwhile, other parts of the battery cannot be damaged in the replacement process.

Further, as shown in fig. 1, the housing 1 includes an upper housing 11 and a lower housing 12 which are detachable; a round through hole 111 is formed in the middle of the upper end face of the upper shell 11; the positive head iron cover 3 is detachably connected with the upper shell 11, and one end of the positive head iron cover, which is far away from the battery cell 2, penetrates through the circular through hole 111 to the outer side of the upper shell 11.

Further, as shown in fig. 1, a first limiting rib 112 and a first limiting groove 121, which are engaged with each other, are respectively disposed at a connection portion of the upper housing 11 and the lower housing 12.

Further, as shown in fig. 1, a second limiting groove 31 and a second limiting rib 113 are respectively disposed at the connection portion of the positive head iron cover 3 and the inner side of the upper shell 11, wherein the second limiting groove and the second limiting rib are engaged with each other.

In this embodiment, the housing 1 is composed of an upper housing 11 and a lower housing 12 which are detachable, and the first limiting rib 112 and the first limiting groove 121 are provided to firmly clamp the upper housing 11 and the lower housing 12 together, so as to ensure the stability of the whole housing;

in addition, the upper shell 11 and the positive head iron cover 3 adopt a detachable connection mode, and the second limiting rib 113 and the second limiting groove 31 are arranged to enable the upper shell 11 and the positive head iron cover 3 to be firmly clamped together, so that stable connection is ensured.

Further, a sealing ring 6 is arranged between the upper shell 11 and the positive head iron cover 3, and the sealing ring 6 improves the sealing performance inside the shell 1.

Further, buffer parts 7 are respectively arranged between the electric core 2 and the iron cover 3 of the head part of the positive electrode and between the electric core 2 and the inner surface of the lower end of the lower shell 12; because this lithium ion battery adopts and is detachable structural design, there is certain clearance between electric core 2 and shell, through setting up 7 purposes of bolster in order to restrict the inside activity of electric core 2 at shell 1 and play certain guard action to electric core 2.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the present invention.

Claims

1. A lithium ion battery with a novel structure comprises a shell, an electric core arranged in the shell and an iron cover at the head part of a positive electrode arranged at one end of the shell, and is characterized in that the electric core comprises a columnar body, and a positive electrode lug and a negative electrode lug which are connected with the two ends of the columnar body; the number of the positive electrode tabs and the number of the negative electrode tabs are two or more respectively; the surface of the positive head iron cover facing the positive pole lug is provided with a first clamping part clamped with the positive pole lug; a second clamping part clamped with a negative pole lug is arranged on the inner side surface of the negative pole end of the shell; the first clamping portion and the second clamping portion are arranged in one-to-one correspondence with the positive electrode lug and the negative electrode lug.

2. The lithium ion battery with the novel structure is characterized in that the shell comprises an upper shell and a lower shell which are detachable; a round through hole is formed in the middle of the upper end face of the upper shell; the positive head iron cover is detachably connected with the upper shell, and one end, far away from the battery cell, of the positive head iron cover penetrates through the circular through hole to the outer side of the upper shell.

3. The lithium ion battery with a novel structure according to claim 2, wherein a first limiting rib and a first limiting groove which are mutually clamped are respectively arranged at the connection position of the upper shell and the lower shell.

4. The lithium ion battery with a novel structure according to claim 1, wherein a second limiting groove and a second limiting rib which are mutually clamped are respectively arranged at the connection position of the positive head iron cover and the inner side of the upper shell.

5. The lithium ion battery with the novel structure is characterized in that a sealing ring is arranged between the upper shell and the iron cover of the positive head part.

6. The lithium ion battery with a novel structure according to claim 1, wherein buffer members are respectively arranged between the battery cell and the iron cover of the positive electrode head and between the battery cell and the inner surface of the lower end of the lower casing.