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Lithium battery cap, manufacturing method and lithium battery

A manufacturing method and technology for lithium batteries, which are applied to lithium batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve the problems of small qualified tolerance range of aluminum casings, loose fit between steps and aluminum casings, and troublesome battery manufacturing. Achieve the effect of relaxing the qualified tolerance range, facilitating assembly and reducing manufacturing difficulty

Inactive Publication Date: 2011-12-14
丁振荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual manufacturing, the manufacturing accuracy of the inner dimensions of the aluminum shell is very high. If the inner size of the aluminum shell is slightly larger, the fit between the steps and the aluminum shell will be too loose, which is unqualified; Unqualified, the qualified tolerance range for the inner dimensions of the aluminum shell is very small, which brings a lot of trouble to the battery manufacturing

Method used

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  • Lithium battery cap, manufacturing method and lithium battery
  • Lithium battery cap, manufacturing method and lithium battery
  • Lithium battery cap, manufacturing method and lithium battery

Examples

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Embodiment Construction

[0029] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0030] Such as figure 1 and figure 2 Shown, it is the first embodiment of lithium battery cap. The lithium battery cap includes a circular cover, the cover includes a circular substrate 1 and a circular step 5 with a height of H1, the step 5 integrally extends downward from the lower surface 12 of the substrate, and the diameter of the step 5 is smaller than the diameter of the substrate 1. A pit 15 is punched downward on the upper surface 11 of the substrate, and correspondingly, a boss 6 with a height H2 protrudes from the position corresponding to the pit on the lower surface of the step. The step 5 has a first side 51, which is used to cooperate with the casing of the lithium battery, and the first side 51 is an arc surface. The boss 6 has a second side 61, the second side 61 is an arc surface, the second side 61 is conne...

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Abstract

The invention discloses a lithium battery block, a manufacturing method and a lithium battery. The lithium battery block comprises a block body which comprises a substrate and a step, wherein the substrate is provided with an upper surface and a lower surface, and the step integrally extends downwards from the lower surface of the substrate; the step is provided with a first side face and further comprises two integrally formed bosses which are punched on the lower surface of the step; and the bosses are provided with second side faces, and the first side face is joined with the second side faces. By punching the bosses, the fitting area of the block and a lithium battery shell is increased, and then the friction between the block and the shell is increased; and in addition, since the boss is formed by punching, i.e., the height of the step is increased, and an intilted angle can be formed on the block conveniently, the space between front parts of two bosses is reduced, the two bosses can extend into the shell easily, therefore, the qualified margin of tolerance of the inner size of the shell can be widened, the manufacturing difficulty is reduced and the assembling of the shell is more convenient.

Description

technical field [0001] The invention relates to a lithium battery cap and a lithium battery. Background technique [0002] There are two types of aluminum shell lithium batteries, square and cylindrical, and square batteries are divided into rounded squares and right-angled squares. Lithium battery includes aluminum casing, cap, winding core and electrolyte. The cap includes a cover body, rivets, connecting pieces and upper and lower sealing rings. The cover body is provided with a liquid injection hole and a rivet hole. The flat surface of the rivet is pressed against the upper sealing ring, and the nail part of the rivet passes through the upper sealing ring, the cover body and the lower sealing ring. And the connecting piece is riveted and fastened. In order to cooperate well with the aluminum shell, the cover body has a step, and the step extends into the inner surface of the aluminum shell, and the step and the inner surface of the aluminum shell are in tight fit. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M10/052
CPCY02E60/122Y02E60/12Y02E60/10
Inventor 丁振荣
Owner 丁振荣
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