SECONDARY BATTERY

To provide a secondary battery with a short exhaust gas path.SOLUTION: A lithium ion battery 10 includes a flat winding body 40 in which an electrode sheet consisting of a positive electrode sheet and a negative electrode sheet is wound, a case 12 that accommodates the winding body 40, and a gas exh...

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Bibliographic Details
Main Author KATAYAMA YUJI
Format Patent
LanguageEnglish
Japanese
Published 08.04.2024
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:To provide a secondary battery with a short exhaust gas path.SOLUTION: A lithium ion battery 10 includes a flat winding body 40 in which an electrode sheet consisting of a positive electrode sheet and a negative electrode sheet is wound, a case 12 that accommodates the winding body 40, and a gas exhaust valve 70 provided at a position corresponding to the axial end of the winding body 40 of the case 12, and the gas exhaust valve 70 is provided at a position corresponding to the center of the winding body 40.SELECTED DRAWING: Figure 4 【課題】排ガス経路を短くした二次電池を提供する。【解決手段】リチウムイオン電池１０は、正極シートと負極シートとからなる電極シートが捲回された扁平型の捲回体４０と、捲回体４０を収容するケース１２と、ケース１２の捲回体４０の軸方向端部に対応する位置に設けられたガス排出弁７０と、を備え、ガス排出弁７０は、捲回体４０の中心に対応する位置に設けられている。【選択図】図４
Bibliography:Application Number: JP20220154244