BATTERY CELL AND MANUFACTURING METHOD THEREFOR

A battery cell according to one embodiment of the present disclosure includes a stacked body including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, an electrode tab extending from the positive electrode or the negat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LEE, Changje, KIM, Sanghun, YOON, Seung Jae
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	A battery cell according to one embodiment of the present disclosure includes a stacked body including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, an electrode tab extending from the positive electrode or the negative electrode of the stacked body, and an electrode lead coupled with the electrode tab, wherein the electrode tabs are formed with a pre-welding portion connecting respective electrode tabs and a main welding portion coupling the electrode tab and the electrode lead, wherein the pre-welding portion includes an inner side edge and an outer side edge, wherein at least one of the welding spots of the main welding portion overlaps an inner side edge of the pre-welding portion, and wherein an inner side edge of the pre-welding portion is disposed closer to the stacked body than an outer side edge of the pre-welding portion in the longitudinal direction of the electrode.