Gs Yuasa International Ltd.

Gs Yuasa Corporation

Takeshi Shimozono

Noriyoshi Munenaga

Isao Suzuki

Hiroshi Tasai

Takehito Matsubara

Tetsuzo Kojima

The metal foil of the positive electrodeor the negative electrodein the power generating elementis connected along the connecting plate portionwhich is folded, twisted, and provided in a protruding condition from the main portionof the current-collector connector; hence the shape of the current-collector connectorbecomes easy to form, and a battery capable of enhancing current collection efficiency, reliability and workability can be provided.

Battery with current-collector connector

Battery having current-collection structure

Battery

A cell such as a nonaqueous electrolytic secondary cell includes a plurality of power-generating elements which each include a strip-like positive electrode and a strip-like negative electrode that are both wound into an elliptic cylinder with a separator being interposed therebetween, where each power-generating element has a peripheral face including at least a flat portion. The cell also includes a cell case for housing the power-generating elements, where the cell case has an opening, and a cover hermetically sealing the opening of the cell case. The flat portion of each power-generating element is superposed on the flat portion of the adjacent power-generating element, and a sheet member is wound around peripheries of the superposed power-generating elements to fasten the power-generating elements such that the power-generating elements are integrated.

Cell comprising a power-generating element fastened by sheets

Growing community of inventors

Kyoto, Japan

Takeshi Shimozono