| 摘要 |
<p>Provided is a highly reliable battery comprising battery elements housed inside of an exterior body consisting of a laminate, wherein contraction wrinkles occurring in the exterior body can be suppressed and prevented. The housing space (30) of the exterior body (14) that houses the battery elements (11) is formed by subjecting the laminate to drawing processing, and the shape thereof is tapered such that the surface area gradually becomes smaller from the opening (31a) towards the back, wherein dimension A of the top surface (32) positioned backmost from the opening in the housing space is set to be equal to dimension X, which, viewing the positive electrode members (1), the negative electrode members (2) and the separators (3) configuring a laminate (4) in the same direction, is the smallest dimension in that same direction, and dimension B of the opening (31a) in the housing space (30) is set to be equal to dimension Y, which, viewing the positive electrode members (1), the negative electrode members (2) and the separators (3) configuring the laminate (4) in the same direction, is the largest dimension in that same direction.</p> |
