Patent ID: 9698408
Date: 2017-07-04
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A flat secondary battery comprising: a power generation element including a positive electrode plate and a negative electrode plate stacked with a separator interposed between the plates; an exterior body housing the power generation element and an electrolyte solution together and sealed by a laminated film having a resin layer stacked on at least an inner surface of a metal layer; and a terminal having one end connected to the power generation element and the other end led out of the exterior body, held by the exterior body between the one end and the other end, and having a held portion, which is held by the exterior body, being sealed, wherein the terminal includes a terminal main body including a nickel plane on a surface thereof, an anticorrosive layer covering at least a part of the nickel plane that is more on the inside of the exterior body than a held portion, and a resin layer covering at least the held portion of a surface of the anticorrosive layer and having an internal extension portion extending from the held portion to the inside of the exterior body, and the held portion is sealed by heat-sealing the resin layer and the resin layer on an inner surface of the exterior body.