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:
Oct. 12, 2004
Filed:
Oct. 16, 2001
Kenji Nakai, Fukaya, JP;
Yoshimasa Koishikawa, Honjou, JP;
Youshin Yagi, Osato-gun, JP;
Kensuke Hironaka, Fukaya, JP;
Shin-Kobe Electric Machinery Co., Ltd., Tokyo, JP;
Abstract
The present invention is to provide a non-aqueous electrolytic solution secondary battery which has high safety while maintaining high capacity and high power. A cylindrical lithium-ion battery is provided in a battery lid which is a portion of a battery container with a cleavage valve which cleaves at a predetermined pressure, and includes an electrode winding group prepared by winding a positive electrode, a negative electrode and a separator, connection portions for connecting the electrode winding group to respective electrode terminals, and non-aqueous electrolytic solution therein. As a positive electrode active material, lithium manganate where the amount of elution of manganese into the non-aqueous electrolytic solution is 5% or less based on the lithium manganate in a region where an electrode potential to metal lithium is 4.8V or more is used. As a negative electrode active material, graphite in/from which lithium ions can be occluded/released according to charging and discharging is used.