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Button cell and preparation method thereof

A button-type battery and equipment technology, applied in the field of button-type battery and its preparation, can solve the problems of unqualified button-type battery quality and performance, easy to accidentally damage the winding core, reduce the button-type battery yield rate, etc., and achieve convenient and fast welding process , The effect of improving processing efficiency and improving yield

Pending Publication Date: 2021-09-24
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the manufacturing process of existing button batteries, when welding between the tabs and the casing, it is easy to accidentally damage the winding core, resulting in unqualified quality and performance of the button batteries, thereby reducing the cost of the button batteries. Yield rate

Method used

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  • Button cell and preparation method thereof
  • Button cell and preparation method thereof
  • Button cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] figure 1 Schematic diagram of the structure of the button battery provided in Embodiment 1 of the present invention; figure 2 Sectional view of the button battery provided for Embodiment 1 of the present invention Figure 1 ; image 3 Sectional view of the button battery provided for Embodiment 1 of the present invention Figure II .

[0080] refer to Figure 1 to Figure 3 As shown, the present embodiment provides a button battery, the button battery includes a casing 10 and a winding core 20, specifically, the casing 10 includes a casing 110 and a top cover assembly 120, and the casing 110 and the top cover assembly 120 together enclose An accommodating cavity for accommodating the winding core 20 is synthesized.

[0081] Wherein, the housing 110 includes: a bottom wall 111 and a side surrounding wall disposed along an outer edge of the bottom wall 111 and extending upward. The bottom wall 111 of the housing 110 may protrude downward to form a convex surface. Ex...

Embodiment 2

[0107] Figure 4 A structural schematic diagram of the second tab provided in Embodiment 2 of the present invention after being welded to the top cover and put into the casing; Figure 5 It is a schematic diagram of the process of loading the winding core into the casing provided by the second embodiment of the present invention;

[0108] Image 6A structural schematic diagram of the top cover and the shell welded together provided by Embodiment 2 of the present invention; Figure 7 A cross-sectional view of the hollow tube passing through the liquid injection hole and the core cavity provided for Embodiment 2 of the present invention.

[0109] refer to Figure 4 to Figure 7 As shown, the present embodiment provides a method for preparing a button battery, and the method for preparing the button battery includes:

[0110] S100: The housing 10 is provided. Such as image 3 As shown, the housing 10 includes a housing 110 and a top cover assembly 120, wherein the housing 11...

Embodiment 3

[0129] This embodiment provides an electronic product, which includes a button battery.

[0130] The button battery in this embodiment has the same structure as the battery provided in Embodiment 1, and can bring about the same or similar technical effects, which will not be described here one by one. For details, please refer to the description of the above embodiment.

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Abstract

The invention provides a button cell and a preparation method thereof. The button cell comprises a shell and a roll core; the shell comprises a shell body and a top cover assembly, and the shell body and the top cover assembly jointly define a containing cavity used for containing the roll core; the roll core comprises a first tab and a second tab, the first tab is in welded connection with the bottom wall of the shell body, and the second tab is connected with the top cover; the top cover is provided with a liquid injection hole, and the liquid injection hole is at least partially overlapped with the cavity of the roll core; and the welding marks of the first tab and the bottom wall are positioned in the overlapped part of the bottom wall, the cavity and the liquid injection hole. According to the invention, the quality and performance of the button cell can meet the requirements, and the yield of the button cell can be improved.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 202010771326.X and the application name "button battery and its preparation method" filed with the China Patent Office on August 4, 2020, the entire contents of which are incorporated herein by reference. Applying. technical field [0002] The invention relates to the technical field of lithium batteries, in particular to a button battery and a preparation method thereof. Background technique [0003] A button battery refers to a battery that looks like a button in size, generally speaking, it has a larger diameter and a thinner thickness. Button batteries are divided into chemical batteries and physical batteries. Among them, chemical batteries are the most commonly used, mainly composed of anodes, cathodes and their electrolytes. [0004] Because of its small size, button batteries are widely used in various small and micro electronic products, such as: computer mothe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/109H01M50/153H01M50/533H01M50/536H01M50/636H01M10/04
CPCH01M10/0431Y02P70/50H01M50/538H01M50/536H01M10/0587H01M50/109H01M50/636B23K11/002B23K26/244
Inventor 彭宁谢斌
Owner ZHUHAI COSMX BATTERY CO LTD
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