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. 20, 2015
Filed:
Sep. 30, 2008
Hideaki Katayama, Ibaraki, JP;
Mitsuhiro Kishimi, Ibaraki, JP;
Yoshinori Sato, Ibaraki, JP;
Yasutaka Kuroki, Ibaraki, JP;
Toshiyuki Edamoto, Ibaraki, JP;
Hideaki Katayama, Ibaraki, JP;
Mitsuhiro Kishimi, Ibaraki, JP;
Yoshinori Sato, Ibaraki, JP;
Yasutaka Kuroki, Ibaraki, JP;
Toshiyuki Edamoto, Ibaraki, JP;
HITACHI MAXELL, LTD., Ibaraki-Shi, JP;
Abstract
A nonaqueous electrolyte battery of the present invention includes a positive electrode having a positive active material capable of intercalating and deintercalating a lithium ion, a negative electrode having a negative active material capable of intercalating and deintercalating a lithium ion, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The heat generation starting temperature of the positive electrode is 180° C. or higher. The separator includes heat-resistant fine particles and a thermoplastic resin. The proportion of particles with a particle size of 0.2 μm or less in the heat-resistant fine particles is 10 vol % or less and the proportion of particles with a particle size of 2 μm or more in the heat-resistant fine particles is 10 vol % or less. The separator effects a shutdown in the range of 100° C. to 150° C.