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:
Sep. 10, 2002
Filed:
Mar. 06, 2000
Kenji Nakai, Uji, JP;
Takeshi Nakano, Osato-gun, JP;
Kensuke Hironaka, Fukaya, JP;
Koji Higashimoto, Nabari, JP;
Kenji Hara, Ueno, JP;
Katsunori Suzuki, Nabari, JP;
Tomohiro Iguchi, Fukaya, JP;
Shin-Kobe Electric Machinery Co., Ltd., Tokyo, JP;
Abstract
A cylindrical lithium-ion battery with high safety, high capacity and high power has a winding group having a positive electrode, a negative electrode and at least one separator, and a connecting portion for connecting to respective terminals from the winding group accommodated in a battery container, and which is provided with an inner pressure-reducing mechanism for discharging gas according to an increase in inner pressure inside the battery container. The positive electrode includes a collector whose both surfaces are applied with composing material including lithium-manganese complex oxide, the thickness of the composing material on the both surfaces of the collector is at least 210 &mgr;m and the amount of the active material per one surface of the collector is at least 240 g/m . The compounding ratio of the lithium-manganese complex oxide in the composing material is preferably at least 80 wt %.