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. 03, 2002
Filed:
Dec. 16, 1999
Shunji Watanabe, Chiba, JP;
Shinichi Takasugi, Chiba, JP;
Hideharu Onodera, Chiba, JP;
Toyoo Harada, Chiba, JP;
Tsugio Sakai, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A non-aqueous electrolyte secondary battery capable of withstanding a reflow temperature has a positive electrode having a conductive material, a binder, and an electrode active material selected from the group consisting of LiCoO , LiNiO and LiMn O . A negative electrode has a conductive material, a binder and an electrode active material selected from the group consisting of a titanium oxide having an anatase structure, lithium titanate having a spinel structure and a molybdenum oxide. An electrolyte has a supporting salt and a non-aqueous solvent having a boiling point greater than 200° C. A gasket is comprised of a material having a heat deformation temperature greater than 230° C. A separator is disposed between the positive electrode and the negative electrode and is comprised of a material having a heat deformation temperature greater than 230° C. At least one of the positive electrode and the negative electrode comprises an electrode heat-treated to a temperature of 250° C. to 450° C. for deactivating a thermally active portion of each of the conductive material, the binder and the electrode active material thereof.