| 摘要 |
The present invention provides a sealed battery using an external material made of flexible material, in which there is no need to bend electrode conductive tabs and in which no defective winding occurs around tabs of the battery element. A band-like positive electrode and a band-like negative electrode are laminated one upon another via a separator, and a laminated combination of electrodes is wound up to prepare a battery element, and the battery element is sealed with a flexible external material. Electrode conductive tabs are bonded respectively at outermost periphery of the positive electrode and the negative electrode when the electrodes are wound up, and neither of the electrode conductive tabs is present at central portion of the battery element.
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