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Zinc/air cell assembly

A battery and intermediate battery technology, applied in battery pack parts, lead-acid batteries, circuits, etc., can solve problems such as the deformed surface of the cathode disk, electrolyte leakage, and wrinkling.

Inactive Publication Date: 2006-09-27
THE GILLETTE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, if the cathode disk is designed such that its diameter is much larger than the inner diameter of the cathode casing, deformation and surface wrinkling of the cathode disk will occur
This also causes the electrolyte to leak from the inside of the battery

Method used

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  • Zinc/air cell assembly
  • Zinc/air cell assembly
  • Zinc/air cell assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Anode shell and cathode shell wall thickness 4mil (0.102mm)

[0066] Zinc / air cells were fabricated according to the process of the present invention with the following overall dimensions: about 8 mm in diameter and about 4 mm in thickness (Duracell 312 size). The anode can 260 and cathode can 240 of the finished cell had a thin wall thickness of 4 mils (0.102 mm). The anode casing has a folded (double) sidewall comprising an inner portion 263a and an outer portion 263e. The sidewall thickness of insulating seal 270 is 6.5 mil (0.165 mm). The overall diameter of the cathode disk 233 was measured after the cathode disk 233 was inserted and punched into the cathode casing, the anode disk 233 overall diameter being 2.0 mil (0.0508 mm) larger than the inner diameter (d2) of the cathode casing. Before pushing the cathode casing 240 over the anode casing 260 with the insulating seal 270 disposed therebetween, as image 3 The outer diameter (diameter d1 ) of the anode casing...

Embodiment 2

[0069] Anode shell and cathode shell wall thickness 2.5mil (0.0635mm)

[0070] Zinc / air cells were fabricated according to the process of the present invention with the following overall dimensions: about 8 mm in diameter and about 4 mm in thickness (Duracell 312 size). The anode can 260 and cathode can 240 of the finished cell had a thin wall thickness of 2.5 mils (0.0635 mm). The anode casing has a folded (double) sidewall comprising an inner portion 263a and an outer portion 263e. The sidewall thickness of insulating seal 270 is 4.0 mil (0.102 mm). The overall diameter of the cathode disk 233 was measured after the cathode disk 233 was inserted and flushed into the cathode casing, the anode disk 233 overall diameter being 1.5 mil (0.0381 mm) larger than the inner diameter (d2) of the cathode casing. Before pushing the cathode casing 240 over the anode casing 260 with the insulating seal 270 disposed therebetween, as image 3 The outer diameter (diameter d1 ) of the anode ...

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Abstract

An assembly process for manufacture of zinc / air cells, typically zinc / air button cells. The cells have a cup shaped anode casing and cup shaped cathode casing, each having an open and closed end. The process comprises an assembly step wherein the two casings are pushed together, followed by a crimping step wherein the cell is punched through a die thereby crimping the cathode casing edge over the anode casing side wall with insulator seal therebetween. In each step, particularly in the crimping step, an anode punch having an annular protruding surface impacts the comer edge of the closed end of the anode casing while another punch is applied with an opposing force to the cathode casing. The process has particular utility for anode and cathode casings of small wall thickness, preferably between 2 and 5 mil (0.0508 and 0. 127 nun).

Description

technical field [0001] The present invention relates to a metal / air battery having a zinc-containing anode and an air cathode. The present invention relates to a metal / air battery having an anode containing zinc and an air cathode containing manganese dioxide and a process for assembling the battery. Background technique [0002] Zinc / air depolarized cells are usually in the form of small button cells which have particular application as batteries for electronic hearing aids including programmable hearing aids. These small batteries typically have a disc-like cylindrical shape with a diameter between about 4-12 mm and a height between about 2-6 mm. Zinc-air batteries can also be fabricated with Zn / MnO equivalent to conventional AAAA, AAA, AA, C, and D sizes 2 Alkaline cells are slightly larger than the cylindrical case size and are manufactured in even larger sizes. [0003] Small zinc / air button cells typically include an anode casing (anode can) and a cathode casing (ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M12/06H01M12/08C22C19/00H01M10/08H01M50/167
CPCC22C19/00Y02E60/128H01M12/06H01M2/0408H01M2/0222Y10T29/4911Y02E60/10H01M50/109Y02P70/50H01M50/167
Inventor 基思·巴克尔
Owner THE GILLETTE CO