CYLINDRICAL BATTERY

A cylindrical battery comprises an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween, a bottomed cylindrical external can which accommodates the electrode body, and a sealing body which seals an opening of the external can. A bottom part of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Daira, Shuhei, Okutani, Oose
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A cylindrical battery comprises an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween, a bottomed cylindrical external can which accommodates the electrode body, and a sealing body which seals an opening of the external can. A bottom part of the external can has a reverse part which has a raised shape such that the reverse part protrudes toward the electrode body in the axial direction and which reverses when the pressure inside the battery reaches a first pressure. The sealing body has a sealing plate which releases gas that is inside the battery by breaking when the pressure inside the battery reaches a second pressure that is higher than the first pressure. The sealing plate functions as a safety valve.