CN209963168U

CN209963168U - Square lithium ion battery

Info

Publication number: CN209963168U
Application number: CN201921231130.0U
Authority: CN
Inventors: 陈淑青; 宋庆彬
Original assignee: Jiangxi ANC New Energy Technology Co Ltd
Current assignee: Jiangxi ANC New Energy Technology Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-01-17
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses a square lithium ion battery, including casing, book core, electrolyte and electric connection component, it sets up inside the casing to roll up the core, and one end is equipped with electric connection component, and rolls up the core bottom and the casing in the bottom be non-contact setting, still including setting up the liquid storage membrane that has the function of inhaling and rising in the casing in the clearance between the bottom in rolling core bottom and the casing, the upper surface of liquid storage membrane is relative with the bottom of rolling up the core, the lower surface of liquid storage membrane is relative with the interior bottom of casing. The liquid storage film can fill the gap between the winding core and the shell, so that the supporting effect is achieved, and the mechanical performance of the battery is improved. The stock solution membrane has the imbibition function, can give the core of book with the electrolyte transmission of casing bottom, is favorable to improving and annotates liquid efficiency.

Description

Square lithium ion battery

Technical Field

The utility model relates to the technical field of batteries, specifically a square lithium ion battery.

Background

The square aluminum shell battery is a battery widely used at present, and when an electric core is assembled at present, a certain gap is formed between a winding core and the bottom of a shell, so that the mechanical performance of the electric core is influenced, and liquid injection is not utilized. This causes a lot of inconvenience to the user, and it is also the problem we need to solve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a square lithium ion battery to solve the problem that proposes in the above-mentioned background art.

In order to realize the purpose, the utility model provides the following technical scheme: the utility model provides a square lithium ion battery, includes the casing, rolls up core, electrolyte and electric connection assembly, roll up the core and set up inside the casing, and one end is equipped with electric connection assembly, and rolls up the core bottom and the casing in the bottom be non-contact setting, still including setting up the liquid storage membrane that has the function of inhaling and rising in the casing in the clearance between the bottom in rolling up core bottom and the casing, the upper surface of liquid storage membrane is relative with the bottom of rolling up the core, the lower surface of liquid storage membrane is relative with the interior bottom of casing.

Preferably, the thickness of the liquid storage film is 0.1-1mm smaller than the gap between the winding core and the bottom in the shell.

Preferably, the length of the liquid storage film is smaller than the length of the bottom in the shell.

Preferably, the material of the liquid storage film is acrylonitrile multipolymer.

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

1. the liquid storage film can fill the gap between the winding core and the shell, so that the supporting effect is achieved, and the mechanical performance of the battery is improved.

2. The stock solution membrane has the imbibition function, can give the core of book with the electrolyte transmission of casing bottom, is favorable to improving and annotates liquid efficiency.

Drawings

FIG. 1 is a schematic perspective view of the utility model;

fig. 2 is a schematic view of a main view of a partial sectional structure of the utility model.

In the figure: 1 shell, 2 winding cores, 201 electric connection component, 3 electrolyte and 4 liquid storage film.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.

Referring to fig. 1-2, the utility model provides a technical solution: the utility model provides a square lithium ion battery, includes casing 1, rolls up core 2, electrolyte 3 and electric connection element 201, roll up core 2 and set up inside casing 1, and one end is equipped with electric connection element 201, and rolls up core 2 bottom and casing 1 interior bottom and be the non-contact setting, still including setting up in casing 1 and having the liquid storage membrane 4 that inhales the function that rises in clearance between core 2 bottom and the casing 1 interior bottom, the upper surface of liquid storage membrane 4 is relative with the bottom of rolling up core 2, the lower surface of liquid storage membrane 4 is relative with the interior bottom of casing 1. The thickness of the liquid storage film 4 is 0.1-1mm smaller than the gap between the winding core 2 and the bottom in the shell 1. The length of the liquid storage film 4 is less than that of the bottom in the shell 1. The material of the liquid storage film 4 is acrylonitrile multipolymer.

The liquid storage film 4 can fill the gap between the winding core 2 and the shell 1, so that the supporting effect is achieved, and the mechanical performance of the battery is improved. The liquid storage film 4 has a liquid suction function, can transmit the electrolyte 3 at the bottom of the shell 1 to the roll core 2, and is favorable for improving the liquid injection efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a square lithium ion battery, includes the casing, rolls up core, electrolyte and electric connection assembly, its characterized in that: roll up the core and set up inside the casing, and one end is equipped with electric connection assembly, and rolls up the core bottom and the casing in the bottom be non-contact setting, still including setting up the liquid storage membrane that has the suction function that rises in the clearance between the bottom in rolling core bottom and the casing in the casing, the upper surface of liquid storage membrane is relative with the bottom of rolling up the core, the lower surface of liquid storage membrane is relative with the interior bottom of casing.

2. The square lithium ion battery according to claim 1, wherein: the thickness of the liquid storage film is 0.1-1mm smaller than the gap between the winding core and the bottom in the shell.

3. The square lithium ion battery according to claim 1, wherein: the length of the liquid storage film is smaller than that of the bottom in the shell.

4. The square lithium ion battery according to claim 1, wherein: the material of the liquid storage film is acrylonitrile multipolymer.