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:
May. 21, 2002
Filed:
Jul. 06, 2000
Toshiyuki Shimizu, Kadoma, JP;
Hideki Fukuda, Kyotanabe, JP;
Toshiya Kuwamura, Nara, JP;
Takayuki Tanahashi, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention relates to an improved non-aqueous electrolyte cell comprising an anode, a cathode and a separator spirally wound so that the anode is disposed on the outer side of the cathode to form an electrode assembly. The outermost end of the cathode is wrapped with an electrically insulating material, the anode has a section provided with an anode current collector in the vicinity of the outermost end thereof, and the section is positioned beyond the wrapped outermost end of the cathode. A reaction suppressing layer is present between a cathode section in the vicinity of the outermost end and the anode positioned on the inner side thereof, thereby only the outer side of the cathode section substantially reacts with the anode. This cell ensures disconnection of remaining non-reacted anode component from the current collector when forcedly discharged at the last stage of discharge, causing little capacity loss.