| 摘要 |
A positive electrode terminal (2) of a film-packaged cell (1) comprises a cladding in which a first metal portion (61) comprising aluminum and a second metal portion (62) comprising copper are joined at an interface (63). One end part (2a) is connected to a positive electrode collector (12) and the other end part (2b) is led out from a packaging body (5). A resin layer (41) joined to the packaging body (5) is provided around the interface (63). The interface (63) has a three-dimensional shape having a substantially V-shaped cross-section. Side edges (2c, 2d) of the positive electrode terminal (2) are squeezed to a tapered shape, and the interface (63) appearing at the surface converges in a straight line. The essential surface area of the interface (63) is thereby reduced. |
