| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a battery stack capable of reducing positional deviation amount in a direction orthogonal to a laminating direction in the whole of a stack as compared with a conventional one.SOLUTION: Each battery 20 is equipped with a metallic battery case 21, a resinous inner case 22 equipped with a wound body storing space 22a and arranged in an inner space 21a of the battery case 21, and a wound body 23 stored in the wound body storing space 22a of the inner case 22. Therefore, by the resinous inner case 22, the metallic battery case 21 itself does not have an electric potential. Therefore, a resin frame for insulating the adjacent batteries 20 and 20 is not required, and the plurality of batteries 20 can be laminated while contacting with each other. Consequently, as compared with a conventional battery stack, a number of lamination can be decreased, and positional deviation amount in a direction orthogonal to a laminating direction in the whole of a stack 10 can be reduced as compared with a conventional one.</p> |
