Cover plate of lithium-ion power battery

A power battery and lithium-ion technology, which is applied in the field of lithium-ion power battery cover, can solve the problems of battery scrapping and unusability, and achieve the effects of preventing liquid leakage, improving safety, and ensuring safety

Inactive Publication Date: 2015-10-28
唐海航
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And when this type of safety valve is opened, the battery will also be scrapped and can no longer be used

Method used

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  • Cover plate of lithium-ion power battery

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Embodiment Construction

[0015] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

[0016] as attached figure 1 As shown, the present invention discloses a cover plate for a lithium-ion power battery, including a cover plate 1, an exhaust cavity 4 is provided inside the cover plate 1, and a bent exhaust channel 9 is provided on the cover plate 1. The lower port of the exhaust passage 9 communicates with the inside of the battery, the upper port of the exhaust passage 9 is located on the side wall of the exhaust cavity 4 and communicates with the exhaust cavity 4, the exhaust cavity 4 is provided with a piston 7, and the upper port of the piston 7 A sealing ejector pin 8 for blocking the upper port of the exhaust passage 9 is provided. A compression spring 3 is arranged between the piston 7 and the side wall of the exhaust cavity 4. One end of the compression spring 3 is mounted on t...

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Abstract

The invention discloses a cover plate of a lithium-ion power battery. The over plate of the lithium-ion power battery comprises a cover plate body, an exhaust cavity is formed in the cover plate body, a bending exhaust passage is arranged on the cover plate body, a lower connector of the exhaust passage is communicated with the interior of the battery, an upper connector of the exhaust passage is located on the side wall of the exhaust cavity and communicated with the exhaust cavity, a piston is arranged in the exhaust cavity, a sealing lifting pin used for blocking the upper connector of the exhaust passage is arranged on the piston, a compression spring is arranged between the piston and the side wall of the exhaust cavity, one end of the compression spring is connected to the piston, the other end of the compression spring is fixed on the side wall of the exhaust cavity, an exhaust hole is formed in the cover plate body, and when the sealing lifting pin blocks the upper connector of the exhaust passage, the exhaust hole is blocked by the side face of the piston. By means of the cover plate of the lithium-ion power battery, the safety of the lithium-ion power battery is greatly improved, the phenomenon that the battery bulges is prevented, and the working life of the battery can be effectively prolonged.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a cover plate of a lithium-ion power battery. Background technique [0002] In recent years, with the increasingly serious energy crisis and global environmental problems, the development and application of new energy has become a global boom. Lithium-ion power batteries using lithium iron phosphate as the positive electrode material are regarded as The best energy source for new energy vehicles is developing rapidly. [0003] With the advancement of lithium-ion battery technology and the emergence of new materials, the safety of lithium-ion batteries is much higher than that of previous lithium-ion batteries. Therefore, lithium-ion batteries are becoming more and more large-scale. In particular, lithium-ion batteries for electric vehicles generally use large prismatic batteries. However, at present, the electrolytes of various lithium-ion batteries basically use carbonate-based elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M50/148H01M50/317H01M50/358H01M50/392
CPCH01M10/0525H01M50/333Y02E60/10
Inventor 唐海航
Owner 唐海航
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