The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2006
Filed:
Sep. 05, 2002
Kohichi Kubo, Kanagawa, JP;
Hideyuki Kanai, Kanagawa, JP;
Shuji Yamada, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A rechargeable battery with a nonaqueous electrolyte using a constituent material, which has high energy density and a high level of safety. The constituent material includes a positive electrode having a lithium compound-containing active material and a current collector, and a negative electrode facing the positive electrode. The negative electrode an active material and a current collector. At least one of the current collectors being formed of an assembly of rectangular sheet pieces. The constituent material satisfies formula S/χ≦α×d, where d represents distance between the current collectors which face each other; S represents the largest facing area in one rectangular sheet piece in the positive electrode current collector and the negative electrode current collector; χ represents aspect ratio of one rectangular sheet piece in the positive electrode or negative electrode current collector; and α is a coeffieient which is a number of 900 to 720.