NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery capable of efficiently exhausting gas to the outside of a battery case without blocking a gas flow path inside the battery case even when a battery is abnormally used.SOLUTION: An upper insulation plate having a through hole...

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Hauptverfasser: YOKOYAMA TOMOHIKO, WAKABAYASHI DAIRIN, NAKAGIRI YASUSHI, MURAOKA YOSHIYUKI
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator YOKOYAMA TOMOHIKO
WAKABAYASHI DAIRIN
NAKAGIRI YASUSHI
MURAOKA YOSHIYUKI
description PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery capable of efficiently exhausting gas to the outside of a battery case without blocking a gas flow path inside the battery case even when a battery is abnormally used.SOLUTION: An upper insulation plate having a through hole is arranged between an electrode group and a sealing plate. The upper insulation plate has a curved shape, and is arranged to be curved in a direction of the electrode group. By such a constitution, strength near a center part, at which a pressure of gas is concentrated during an abnormal time, can be improved. Therefore, movement of the electrode group can be restrained, and the gas can be efficiently exhausted to the outside of the battery case without blocking a gas flow path inside the battery case, so as to improve safety of a battery.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
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