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Lithium ion battery

A lithium-ion battery and a combination of technologies, applied in the field of lithium-ion batteries, can solve problems such as central axis positioning that cannot be avoided, and achieve the effect of easy and cheap production and easy welding

Inactive Publication Date: 2010-12-22
BEIJING CHUANGSHI WEINA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is already known, for example, to make a sharp edge on the through hole of the cover plate as a welding flange, but when sealing the central shaft, it still cannot be exempted from the need for a special positioning of the central shaft

Method used

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Embodiment Construction

[0014] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.

[0015] According to the preferred embodiment of the present invention, as shown in the figure, the reference number 1 represents a cover-shaped lithium-ion battery cover plate with a web portion 2 and a flange 3 . The web 2 has an outer plane 5 and an inner plane 6 approximately parallel to the outer plane 5 . Cover plate 1 is a circular plane, in the center of which there is a circular through hole 10 delimited by surface 12 which intersects at right angles to outer surface 5 and inner surface 6 and forms a flange 15 with these planes. If the through hole 10 is punched neatly, the flange 15 is the point line of the right angle. However, for example, when making a stain...

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Abstract

The invention relates to a lithium ion battery which comprises a cover body, wherein the cover is provided with a web plate; the web plate is provided with an upper web plate plane and a lower web plate plane which are approximately in parallel; a round through hole, which is defined by the wall and is basically perpendicular to the web plate planes, is arranged in the web plate; the wall is provided with a radial inward edge and comprises an annular body; the annular body is provided with an upper annular plane and a lower annular plane which are in parallel, a central hole and a central shaft, which is packaged in the hole and vertically extends out of the planes; and the annular body is also provided with bevel edges, which are symmetrical about the parallel planes which have equal intervals with the upper and lower planes. The invention is characterized in that the inward edge of the wall, which defines the through hole, form a flange; and the diameter of the annular body is greater than that of the through hole of the web plate.

Description

technical field [0001] The invention relates to a lithium ion battery. Background technique [0002] Usually, during the sealing process of lithium-ion batteries, the central axis is directly sealed to the edge of a specific through hole on the battery cover. That is: place a ring-shaped glass sheet or glass beads or glass slag around the central axis, put the cover plate and the central axis with glass beads around it on the fixture, and the typical situation is: multiple cover plates are placed approximately at the same time. Put the fixture with the workpiece into the furnace or oven, and heat up to the melting point of the glass, so that the glass is sintered on the cover plate and the central shaft. This approach is slow and expensive. The surface of the cover plate must be cleaned, the cover plate takes up a lot of space, and requires a lot of energy because the cover plate is large and heavy compared to the central shaft, glass sheet or glass sphere. [0003] The a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36H01M2/04H01M2/08H01M2/00H01M50/147
CPCY02E60/10
Inventor 王长梗史密斯·王
Owner BEIJING CHUANGSHI WEINA TECH
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