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Cambered surface shell of button type lithium secondary battery

A secondary battery and button-type lithium technology, applied in secondary batteries, battery components, circuits, etc., can solve electrical and safety risks and other issues

Pending Publication Date: 2022-03-01
SYNERGY SCIENTECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the problem that the conventional casing will press the central area of ​​the internal battery components after assembly, causing electrical and safety risks

Method used

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  • Cambered surface shell of button type lithium secondary battery
  • Cambered surface shell of button type lithium secondary battery
  • Cambered surface shell of button type lithium secondary battery

Examples

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Comparison scheme
Effect test

Embodiment Construction

[0033] Relevant detailed description and technical contents of the present invention are as follows with regard to coordinating accompanying drawings now:

[0034] see figure 1 , figure 2 , image 3 and Figure 4 As shown, the structure of the present invention provides a button-type lithium secondary battery composite casing structure, which includes an upper casing 10 and a lower casing 20. The upper casing 10 has a single-side opening 11 and an outer convex arc surface 12. 1. A ring wall 13 and an accommodating space 14, the outer convex arc surface 12 is far away from the one-sided opening 11, and the center height h of the outer convex arc surface 12 is 0.1 to 1 millimeter (mm), and the ring wall 13 surrounds Connecting the convex arc surface 12, the accommodating space 14 is located between the ring wall 13, the one-side opening 11 and the convex arc surface 12, and the outer surface of the ring wall 13 is covered with an insulating rubber ring 30, And the manufactu...

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Abstract

The cambered surface shell comprises an upper shell body and a lower shell body, the upper shell body is provided with a single-side opening, an outwards-protruding cambered surface far away from the single-side opening, an annular wall connected with the outwards-protruding cambered surface in a surrounding mode, and a containing space located among the annular wall, the single-side opening and the outwards-protruding cambered surface. The outer side surface of the annular wall is coated with an insulating rubber ring; the lower shell is provided with a sealing cover for shielding the accommodating space and a cap ring which is connected with the sealing cover, is used for spacing the insulating rubber ring and is used for sealing the accommodating space; therefore, an outer convex space is formed in the center of the accommodating space due to the outline of the outer convex cambered surface, and an inner battery core component can be accommodated in the outer convex space due to the structure thickness increased by fitting and welding with the upper shell and the lower shell, so that the electric property and safety risks caused by compression of the central area of the inner battery core component are reduced.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to the structure of a button-type lithium secondary battery composite casing. Background technique [0002] Lithium-ion battery (Lithium-ion battery) is a rechargeable battery that mainly relies on lithium ions to move between the positive and negative electrodes to convert chemical energy into electrical energy. It has the advantages of high energy density, no memory effect, and a large number of It is widely used in 3C products, such as smart phones and tablets. [0003] Generally, the button-type lithium secondary battery is composed of an outer housing part and an inner cell part, and the outer housing part includes a lower case and an upper case (including an insulating rubber ring). And the inner cell part includes a first electrode, a second electrode and a diaphragm arranged between the first electrode and the second electrode; the inner cell part is connected with the lower case an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/109H01M50/166H01M50/186H01M50/531H01M10/0525
CPCH01M10/0525Y02E60/10
Inventor 施凯胜赖秀菱蔡金皇沈志鸿
Owner SYNERGY SCIENTECH CORP
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