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Lithium ion battery and cover plate structure thereof

A lithium-ion battery and cover plate technology, which is applied to secondary batteries, structural parts, battery pack components, etc., can solve the problems of complicated assembly of battery cover and short life of lithium-ion battery.

Pending Publication Date: 2018-02-23
INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The assembly of the traditional battery cover is complicated, and the life of the lithium-ion battery is short

Method used

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  • Lithium ion battery and cover plate structure thereof
  • Lithium ion battery and cover plate structure thereof
  • Lithium ion battery and cover plate structure thereof

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Embodiment Construction

[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0024] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical featu...

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Abstract

The invention relates to a lithium ion battery and a cover plate structure thereof. The cover plate structure of the lithium ion battery comprises a battery shell cover, a positive electrode end plate, a negative electrode end plate, a first connection plate, a second connection plate, a first riveting part, a second riveting part, a third riveting part and a fourth riveting part, wherein the first connection plate, the battery case cover and the positive electrode end plate are riveted together by the first riveting part; the second connection plate, the battery case cover and the negative electrode end plate are riveted together by the second riveting part; the third riveting part is used for being connected with a positive electrode lug, and the fourth riveting part is used for being connected with a negative electrode lug. According to the cover plate structure of the lithium ion battery, an assembling speed is quickened by the first riveting part, the second riveting part, the third riveting part and the fourth riveting part; the cover plate structure of the lithium ion battery is not prone to waggling after being assembled; the bad phenomenon that battery case cover liquid leakage is triggered when a bolt on a traditional battery case cover is loose is avoided; furthermore, internal resistance of the lithium ion battery is prevented from being expanded, and the service life of the battery is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium ion battery and its cover plate structure. Background technique [0002] The connection method of the tabs and poles of traditional lithium-ion batteries is usually: punch holes on the battery case cover, add plastic seals in the holes, and fix the plastic seals on the battery case cover through bolts and nuts. The post leads out of the battery case cover through the hole. The lugs and posts are then connected to each other using ultrasonic welding, laser welding, or a combination of the two processes. The assembly of the traditional battery cover is complicated, and the life of the lithium-ion battery is short. Contents of the invention [0003] Based on this, it is necessary to overcome the defects of the prior art and provide a lithium-ion battery and its cover plate structure with simple assembly and long battery life. [0004] The technical solution is as fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/06H01M2/26H01M2/30H01M10/0525H01M50/148H01M50/172H01M50/536H01M50/552
CPCH01M10/0525H01M50/15H01M50/172H01M50/531H01M50/543Y02E60/10
Inventor 王超黄学杰
Owner INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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