| 摘要 |
PROBLEM TO BE SOLVED: To provide a filmed battery using an envelope having a recess for housing a battery element prevented from the damage of the envelope when sealing the battery element. SOLUTION: A positive electrode current collector part 7a arranged so as to protrude toward a part leaned to one surface side in a direction of thickness, and a negative electrode current collector part 7b arranged so as to protrude toward a part leaned to the other surface side in the direction of thickness are arranged at the battery element 6, and lead terminals 5a, 5b are connected to the electrode current collector parts, respectively. The lead terminals 5a, 5b are arranged at almost the same level of height in the direction of thickness. The battery element is interposed between an upper and a lower enveloping films 3, 4, and peripheral edge parts of the enveloping films 3, 4 are joined and airtightly sealed. Recesses 3a, 4a having a prescribed shape and depth corresponding to respective battery elements 6 and current collector parts 7a, 7b are formed on respective enveloping films 3, 4. COPYRIGHT: (C)2005,JPO&NCIPI
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