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High-capacity lithium-ion power battery post sealing structure

A power battery and lithium-ion technology, applied in structural parts, battery pack parts, circuits, etc., can solve problems affecting battery performance and cycle life, affecting pole sealing effect, cover plate deformation, etc., to achieve simple structure, Guarantee the use of safety performance, good sealing effect

Active Publication Date: 2014-05-07
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In harsh environments such as high and low temperature, low air pressure, etc., the battery cover plate at the sealing part is subject to a large extrusion force, which is likely to cause deformation of the cover plate, which in turn affects the sealing effect of the pole, resulting in liquid leakage, which will seriously affect the battery performance and cycle. service life

Method used

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  • High-capacity lithium-ion power battery post sealing structure
  • High-capacity lithium-ion power battery post sealing structure
  • High-capacity lithium-ion power battery post sealing structure

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Embodiment Construction

[0022] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0023] Such as Figure 1 to Figure 4 As shown, the pole sealing structure of the large-capacity lithium-ion power battery includes a cover plate 1 and a pole 2 sealedly connected with the cover plate 1. One end of the pole 2 is a connecting pole 7, and the connecting pole 7 is used to gather current and The pole ear connected to the battery core, the other end is an electrode terminal 6, and the electrode terminal 6 protrudes to the outside of the cover plate 1 as an electrode; the cover plate 1 includes a cover plate body 4, and a cover plate boss 5 protrudes along the cover plate body 4, There is a pole hole in the center of the cover body 4 and the cover boss 5; a sealing platform 8 is provided on the pole 2; after the sealing gasket 10 is installed on the sealing platform 8, the electro...

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Abstract

The invention discloses a high-capacity lithium-ion power battery post sealing structure, which comprises a cover plate and a post which is connected with the cover plate in a sealing way, wherein one end of the post is a connecting post, and the other end of the post is an electrode end; the cover plate comprises a cover plate body, cover plate bosses extended out along the center of the cover plate body, and the centers of the cover plate body and the cover plate bosses are provided with post holes; a sealing table is arranged on the post; after a sealing gasket is arranged on the sealing table, the electrode end passes through the post holes of the cover plate; the space between the post and the post holes and the space between the cover plate bosses and the sealing table are subjected to sealed insulation through the sealing gasket; an insulating protective sleeve is molded at a position, which is close to the electrode end and passes through the cover plate body, on the post; and another insulating protective sleeve is molded on the cover plate bosses, the sealing table and an outer surface of the sealing gasket between the cover plate bosses and the sealing table. By the sealing structure, the connecting stability and the sealing performance of the battery can be effectively guaranteed, and the using safety performance of the battery is further guaranteed.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a pole sealing structure of a large-capacity lithium-ion power battery. Background technique [0002] Lithium-ion batteries have the advantages of high voltage, long charge and discharge life, fast charging, low self-discharge rate, and wide operating temperature range. Lithium-ion batteries have been widely used in digital cameras, mobile phones, power tools and other fields. [0003] With the development and maturity of electric vehicle technology, based on the advantages of lithium-ion batteries, lithium-ion batteries are used as power batteries for electric vehicles. Lithium-ion power battery technology has become the core technology of electric vehicle power, and it is the The first choice and main direction of component enterprises. As the power of electric vehicles, the lithium-ion power battery selected is a large-capacity battery. Ensuring the reliability and safety...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/08
CPCY02E60/12Y02E60/10
Inventor 王建高锋柱王永张海滨
Owner 奇瑞新能源汽车股份有限公司
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