| CPC H01M 10/0587 (2013.01) [H01M 50/46 (2021.01); H01M 50/538 (2021.01); Y02E 60/10 (2013.01); Y02P 70/50 (2015.11)] | 8 Claims |
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1. A secondary battery, comprising:
a battery case;
an electrode body in which a positive electrode, a negative electrode, and a separator are stacked, with the positive electrode and the negative electrode being insulated from each other by the separator; and
a collector member connected to the battery case and the electrode body, wherein
the positive electrode includes
a positive electrode collector including an active material layer forming region, an insulation layer forming region adjacent to the active material layer forming region, and a collector region adjacent to the insulation layer forming region,
a positive electrode active material layer including a positive electrode active material provided on a surface of the active material layer forming region, and
an insulation layer provided on a surface of the insulation layer forming region,
the collector member includes a first portion, and a second portion continuous to the first portion and bent relative to the first portion,
the first portion is fixed to the battery case,
the second portion is connected, at an end thereof on an opposite side to the bent portion, to the collector region,
the collector member further including a rib integrally formed, at the bent part, with the first portion and the second portion; and
wherein the rib has a length that is shorter than a space between a top of the electrode body and the first portion of the collector member, and a width that is half or less than a thickness of the electrode body.
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