Hitachi Chemical Company, Ltd.

Shin-Kobe Electric Machinery Co., Ltd.

Kenzou Ikeda

Akira Tanaka

Murashi Shinto

Yuichiro Mishiro

Satoshi Kugino

A current collecting structure for which the installation space for current collecting plates is not increased more than necessary even if the number of electrodes to be stacked is increased to increase the capacity of a secondary battery is provided. Positive current collecting platestoconstituting a positive current collecting plate stacking portionare bent at bent portionstoto constitute fixed portionstoand welded portionsto, respectively. The angles of the bent portionstoare 80&#xb0;, 90&#xb0;, 100&#xb0;, 110&#xb0;, and 120&#xb0;, respectively. The angles of the bent portionstoare 120&#xb0;, 110&#xb0;, 100&#xb0;, 90&#xb0;, and 80&#xb0;, respectively. Negative current collecting plates are also bent in the same manner.

Current collecting structure for secondary battery and secondary battery

If a non-aqueous electrolyte secondary battery has a seal structure between a lid and an electrode terminal in which a seal member is compressed by fastening a nut, the nut may be loosened to make the amount of compression of the seal member insufficient to reduce the seal performance even if the nut is fastened enough to obtain an appropriate amount of compression of the seal member at the time of manufacture of the battery. A battery case has an opening, and houses an electrode group and an organic electrolyte. A lid is fastened to the battery case, and tightly seals the opening of the battery case. An electrode terminal is electrically connected to the electrode group. The lid and the electrode terminal face each other via an elastic member.

Growing community of inventors

Tokyo, Japan

Kenzou Ikeda