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Square lithium battery

A lithium battery, square technology, applied in the direction of lithium batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve the problems of poor safety performance, easy to change, and low service life, so as to improve safety performance and prevent over-temperature High and prolong service life effect

Inactive Publication Date: 2012-08-15
温岭市恒泰电池有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the vibration of the lithium battery with this structure, the position between the electrode column and the casing is easily changed, resulting in battery damage and reduced service life.
And because the contact area between the electrode column and the electrode lug is small and the resistance is large, heat will be ge

Method used

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Embodiment Construction

[0027] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0028] Such as figure 1 As shown, the square lithium battery mainly includes a cylindrical case 1 with open ends at both ends and positive and negative pole pieces, a diaphragm and an electrolyte disposed in the cylindrical case 1 . A pole lug is provided on the pole piece, and the pole lug is connected with an electrode lead-out structure. Such as figure 1 and figure 2 As shown, a cover plate 2 for closing the opening is provided at the opening of the cylindrical housing 1. The cover plate 2 has a through hole 21 for the electrode lead-out structure to pass through, and the cover plate 2 is provided with a Liquid injection hole 22 is arranged.

[0029] Specifically, such as figure 2 As shown, the electrode lead-out...

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Abstract

The invention provides a square lithium battery and belongs to the technical field of a lithium battery, solving the problems that the existing lithium battery is poor in safety performance and low in service life. The square lithium battery comprises a shell, an anode and cathode pole pieces, a diaphragm and electrolyte, wherein the anode and cathode pole piece, the diaphragm and the electrolyte are arranged in the shell; the pole piece is provided with a lug; the lug is connected with an electrode extraction structure; the opening of the barrel-shaped shell is provided with a cover plate used for sealing the opening; the cover plate is provided with a through hole through which the electrode extraction structure penetrates; the cover plate is provided with a liquid injection hole; the electrode extraction structure comprises a cylindrical electrode post; the inner end of the electrode post is provided with a connecting part used for enlarging the connecting area between the electrode post and the lug; one end of the electrode post, which penetrates through the cover plate, is sheathed with a locking nut; the electrode post is fixedly connected with the cover plate under the action of the locking nut; and a supporting piece which supports the electrode post is also arranged in the shell. The square lithium battery has the advantages of high safety performance, long service life and the like.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries and relates to a square lithium battery. Background technique [0002] Lithium batteries are widely used in various digital and communication products such as notebook computers due to their advantages such as light weight, small size, large capacity, and fast charging speed. However, when lithium batteries are used in mobile applications or occasions with severe vibrations, such as electric vehicles, military applications, etc., the instability of battery quality occurs. After long-term use, it is found that the unstable quality of lithium batteries when used in such occasions is not due to quality control problems in the production process, but is related to the structure of lithium batteries. [0003] For example, the more common lithium battery at present is a square lithium battery, which mainly includes a casing and positive and negative pole pieces contained in the casing, a diap...

Claims

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Application Information

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IPC IPC(8): H01M10/052H01M10/058H01M2/30
CPCY02E60/10Y02P70/50
Inventor 张荣华
Owner 温岭市恒泰电池有限公司
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