EXPLOSION-PROOF TYPE BATTERY

PURPOSE:To make it possible to quickly release the internal pressure of a battery by arranging an explosion-proof component comprising a shape memory alloy between a terminal plate and a sealing body, and breaking the sealing body with the explosion-proof component at a temperature higher than the t...

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Bibliographic Details
Main Authors YAMAMOTO KOHEI, MURAKAMI YUKIYOSHI, HARADA YOSHIRO
Format Patent
LanguageEnglish
Published 01.04.1988
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:PURPOSE:To make it possible to quickly release the internal pressure of a battery by arranging an explosion-proof component comprising a shape memory alloy between a terminal plate and a sealing body, and breaking the sealing body with the explosion-proof component at a temperature higher than the transformation temperature of the shape memory alloy. CONSTITUTION:A breaking component 6 made of a shape memory alloy is arranged between a terminal plate 5 and a sealing body 4. The breaking component 6 memorizes the shape so that it deforms in a straight line at a temperature higher than the transformation temperature of the shape memory alloy. When the temperature of a battery exceeded the transformation temperature of the shape memory alloy by disposing of in fire or outernal short circuit, the breaking component 6 deforms in a straight line and the tip 6a quickly moves in an I direction and breaks the sealing body 4. As a result, the gas inside the battery is quickly released from the broken part.
Bibliography:Application Number: JP19860215270