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Winding type soft package button battery

A button battery and winding technology, which is applied to primary batteries, winding/folding electrodes, batteries, etc., can solve problems such as troublesome production operations, explosion, and gas cannot be discharged in time, achieving high safety and reducing the risk of explosion Effect

Pending Publication Date: 2020-06-19
HUIZHOU LIWINON NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively high pressure that the steel shell material can withstand, when an acute short circuit occurs in the battery cell, the gas generated by the chemical reaction inside the battery cell cannot be discharged in time, and there is a risk of explosion
[0004] At present, there are also button batteries with soft package structure on the market, which are packaged with aluminum-plastic film. The pressure inside the battery cell is relatively small, and there is no risk of explosion. It is troublesome to carry out secondary welding on the tabs

Method used

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  • Winding type soft package button battery
  • Winding type soft package button battery
  • Winding type soft package button battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like Figure 1~6 As shown, a winding soft pack button battery includes a first packaging film 1, a second packaging film 2 and a winding bare cell 3 packaged between the first packaging film 1 and the second packaging film 2, One end of the wound-type bare cell 3 leads to a positive pole tab 4, and the other end of the wound-type bare cell 3 leads to a negative pole tab 5, and both the positive pole tab 4 and the negative pole tab 5 are provided with a connection area 41 / 51 and the insulation protection area 42 / 52, the connection area 41 of the positive electrode tab 4 is electrically connected to the inner surface of the first packaging film 1, the connection area 51 of the negative electrode tab 5 is electrically connected to the inner surface of the second packaging film 2, and the first Both the outer surfaces of the packaging film 1 and the second packaging film 2 are provided with conductive areas.

[0031] Further, the first packaging film 1 and the second packa...

Embodiment 2

[0043] The difference from Embodiment 1 is that both the positive tab 4 and the negative tab 5 are located at the winding center of the wound bare cell 3 .

[0044] The rest are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0046] The difference from Embodiment 1 is that the positive tab 4 is located at the winding center of the wound bare cell 3 , and the negative tab 5 is located at the edge of the wound bare cell 3 .

[0047] The rest are the same as in Embodiment 1, and will not be repeated here.

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PUM

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Abstract

The invention belongs to the technical field of batteries. The invention particularly relates to a winding type soft package button battery. The battery comprises a first packaging film, a second packaging film and a winding type bare battery cell packaged between the first packaging film and the second packaging film, wherein a positive electrode tab is led out from one end of the winding type bare battery cell; a negative electrode tab is led out from the other end of the winding type bare battery cell; each of the positive electrode tab and the negative electrode tab is provided with a connecting region and an insulating protection region; the connecting region of the positive electrode tab is conductively connected with an inner surface of the first packaging film, the connecting region of the negative electrode tab is conductively connected with an inner surface of the second packaging film, and outer surfaces of the first packaging film and the second packaging film are respectively provided with conductive areas. Compared with the prior art, the winding type soft package button battery has the advantages that a mode that positive and negative tabs are led out of a conventional soft package button battery is avoided, and the safety of the battery is high.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a winding soft pack button battery. Background technique [0002] A button battery, also known as a button battery, refers to a battery that looks like a small button. Button batteries are widely used in various miniature electronic products due to their small size, with diameters ranging from 4.8mm to 30mm and thicknesses ranging from 1.0mm to 7.7mm; they are generally used as backup power for various electronic products, such as Computer motherboards, electronic watches, electronic dictionaries, electronic scales, remote controls, electric toys, pacemakers, electronic hearing aids, counters, cameras, etc. [0003] Most of the existing button batteries adopt a steel shell structure, and the upper cover and the lower shell are sealed together by wrapping. The advantage of the steel case button battery is that the upper cover and the lower case can be used as posit...

Claims

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Application Information

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IPC IPC(8): H01M2/26H01M2/02H01M6/00H01M10/04
CPCH01M6/00H01M10/0427H01M10/0431H01M2200/00H01M50/109H01M50/531H01M50/538Y02E60/10Y02P70/50
Inventor 余志陈杰于子龙刘关心杨超群杨山李载波
Owner HUIZHOU LIWINON NEW ENERGY TECH CO LTD