Original document(16 pages)  中文版
    A secondary battery comprising a band-like positive plate including a positive electrode current collector and a positive electrode mix layer carried on the positive electrode current collector, a band-like negative plate including a negative electrode current collector and a negative electrode mix layer carried on the negative electrode current collector, and a band-like separator arranged between the positive plate and the negative plate. The positive and negative plates are wound with the separator interposed therebetween to constitute a plate group. The positive plate has an exposed part of the positive electrode current collector where the positive electrode mix layer is not formed in the vicinity of a first end part on the start-of-winding side and a positive electrode lead connected with the exposed part. A first round adjacent to the outside of the connection portion of the positive electrode lead with the separator interposed therebetween and a second round adjacent to the outside of the first round with the separator interposed therebetween are composed of a part of the negative plate carrying the negative electrode mix layer.
Application Number
200580009537 Application Date
Title 名称 Secondary battery
Publication Number
1934744 Publication Date
Approval Pub. Date Granted Pub. Date
International Classification 分类号 H01M10/40
Applicant(s) Name
Matsushita Electric Ind Co., Ltd.
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人 wangyang

Secondary battery
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