Button lithium secondary battery

A secondary battery and button-type lithium technology, which is applied in the direction of secondary batteries, secondary battery manufacturing, lithium storage batteries, etc., to achieve the effects of improving yield, reducing production costs, and improving competitiveness

Pending Publication Date: 2019-10-22
KUNSHAN SYNERGY SCIENTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The electrical connection method between the battery core and the metal shell is to lead the two electrodes in the battery core composition out of the guide handle or metal foil to form an electrode foil, and then electrically connect the electrode foil to the metal of the shell. The most common method to achieve electrical connection is welding, suc

Method used

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  • Button lithium secondary battery

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention, but not to limit the protection scope of the present invention.

[0023] figure 1 It is a schematic cross-sectional view of an embodiment of a button-type lithium secondary battery of the present invention. A button-type lithium secondary battery includes a casing, an insulating ring 2, a battery cell 4, a thimble 5, an electrolyte and other components. The casing It includes an upper shell 1 and a lower shell 3; both the upper shell 1 and the lower shell 3 are hollow metal shells with one side opening, and the end faces of the upper and lower shells are the two poles of the battery; the insulating ring 2 is formed by injection molding The process is formed outside the upper case 1 .

[0024] The material of the shell can be selected from metal, polymer materia...

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PUM

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Abstract

The invention relates to the technical field of lithium batteries, in particular to a button lithium secondary battery and a manufacturing method thereof. The button lithium secondary battery comprises a shell, an insulating ring, a battery cell, a thimble and electrolyte, and is characterized in that the shell comprises an upper shell and a lower shell; the upper shell and the lower shell are both metal shells with openings in one side and hollow interiors; the end faces of the upper shell and the lower shell are two poles of the battery; the insulating ring is located between the upper shelland the lower shell; the battery cell is installed in the shell and comprises a first electrode, a second electrode and a diaphragm arranged between the first electrode and the second electrode; thefirst electrode, the diaphragm, the second electrode and the diaphragm are arranged in sequence; and the first electrode, the diaphragm and the second electrode form the battery cell in a winding mode. According to the invention, the thimble is adopted to achieve the effect of electrically connecting the electrode and the shell; the welding procedure of assembly is omitted; the efficiency is improved; the production cost is reduced; the battery performance can be improved; and the cycle life is prolonged.

Description

technical field [0001] The patent of the invention relates to a button-type lithium secondary battery and a manufacturing method thereof, belonging to the technical field of lithium batteries. Background technique [0002] A common button lithium battery is usually composed of two metal shells (upper shell, lower shell), an insulating ring, a first electrode, a second electrode, a diaphragm, and an electrolyte. During the production process of a button lithium battery, The first electrode, the second electrode and the diaphragm are made into a cell by stacking or winding, and the cell is electrically connected to the metal shell, and after the electrolyte is injected, the two metal shells (upper shell, The lower case) is combined and insulated, and finally the battery is formed to complete the button lithium battery production process. [0003] The electrical connection method between the battery core and the metal shell is to lead the two electrodes in the battery core com...

Claims

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Application Information

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IPC IPC(8): H01M2/26H01M10/04H01M10/052H01M10/0587
CPCH01M10/052H01M10/0587H01M10/0427H01M50/531Y02E60/10Y02P70/50
Inventor 施凯胜赖秀菱王光昌沈志鸿邢雪坤
Owner KUNSHAN SYNERGY SCIENTECH CO LTD
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