US 11,456,513 B2 · Battery and method for producing the same

Abstract

A battery producible with high quality and at low costs by decreasing the output of an energy beam used to weld multiple current collecting tabs to an outer case and thus securing the sufficient margin of the output thereof. An aspect of the battery includes an overlapping part K of multiple current collecting tabs connected to a negative electrode of an electrode body being welded to an outer case via a weld group, and the weld group includes a weld part and weld part that are each in the form of a line when they are viewed from the outside of the outer case. The weld as a first weld serves to weld the outer case to all of the multiple current collecting tabs, and the weld as a second weld serves to weld the outer case to only one or some of the multiple current collecting tabs.

Claims10

Dependent claims

A battery comprising a plurality of current collecting tabs connected to one of a positive electrode and a negative electrode, wherein an outer case and an overlapping part at which the plurality of current collecting tabs overlap each other are welded to each other via a weld group formed so as to extend from an outer surface of the outer case to the overlapping part,

the weld group includes a first weld and second weld that are each in a linear form when the weld group is viewed from the outside of the outer case,
the first weld serves to weld the outer case to all of the plurality of current collecting tabs, and
the second weld serves to weld the outer case to only one or some of the plurality of current collecting tabs including at least one current collecting tab among the current collecting tabs forming the overlapping part, the at least one current collecting tab directly contacting the outer case.

Dependencies are inferred from the claim text.

Battery and method for producing the same

Life of this patent

Battery and method for producing the same

Life of this patent

Abstract

Claims10