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End cover assembly, single battery, battery pack, device and liquid injection method

A technology of end cap components and battery cells, which is applied to battery pack components, batteries, secondary batteries, etc., and can solve problems such as reducing the life of battery cells

Pending Publication Date: 2021-02-05
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, impurities such as water vapor are not allowed to enter the battery pack, which will reduce the life of the battery cells.

Method used

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  • End cover assembly, single battery, battery pack, device and liquid injection method
  • End cover assembly, single battery, battery pack, device and liquid injection method
  • End cover assembly, single battery, battery pack, device and liquid injection method

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Embodiment Construction

[0058] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention; and, for clarity, the dimensions of some structures may have been exaggerated. Furthermore, the features, structures, or characteristics described hereinafter may be combined in any suitable manner in one or more embodiments.

[0059] In the des...

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PUM

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Abstract

The embodiment of the invention provides an end cover assembly, a battery monomer, a battery pack, a device and a liquid injection method, and the end cover assembly comprises an end cover plate whichcomprises a through hole for injecting electrolyte and a fixed part surrounding the through hole; a nail body which comprises a containing part used for containing the fixed part, wherein the containing part is annular and comprises two inner walls which are arranged in the radial direction of the containing part in a spaced mode, and the inner wall and the outer wall of the fixed part are matched with the two inner walls of the nail body in an abutting mode respectively so as to seal the through hole. According to the embodiment of the invention, the annular accommodating part can provide limiting in two directions for the fixing part, so that the fixed part is stressed in a balanced manner, the fixed part can be prevented from inclining and deforming, the contact area of the nail body and the fixed part can be increased, and the sealing effect is improved.

Description

technical field [0001] The invention relates to the technical field of energy storage equipment, in particular to an end cover assembly, a battery cell, a battery pack, a device and a liquid injection method. Background technique [0002] With the increasing improvement of electric vehicle technology, electric vehicles are getting closer to people's lives, and at the same time, electric vehicles have higher and higher requirements for the performance of batteries that provide energy. [0003] Lithium-ion battery cells have extremely high requirements on the sealing of the structure. The electrolyte is not allowed to leak out during use, otherwise it will pollute the surrounding air and environment. At the same time, impurities such as water vapor are not allowed to enter the interior of the battery pack, reducing the life of the battery cells. [0004] Therefore, there is an urgent need for a new end cap assembly, battery cell, battery pack, device and liquid injection met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/636H01M50/645H01M50/15H01M10/0525
CPCH01M10/0525H01M2220/20Y02E60/10H01M50/15H01M50/103H01M50/186H01M50/636H01M50/627H01M50/645H01M50/147H01M50/184H01M50/609H01M50/249
Inventor 黄守君陈新祥郑于炼王鹏
Owner CONTEMPORARY AMPEREX TECH CO