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:
Apr. 19, 2011
Filed:
Oct. 28, 2005
Hiroki Inagaki, Kawasaki, JP;
Yoshinao Tatebayashi, Yokohama, JP;
Hideaki Morishima, Ichikawa, JP;
Haruchika Ishii, Kawasaki, JP;
Hidesato Saruwatari, Kawasaki, JP;
Norio Takami, Yokohama, JP;
Hiroki Inagaki, Kawasaki, JP;
Yoshinao Tatebayashi, Yokohama, JP;
Hideaki Morishima, Ichikawa, JP;
Haruchika Ishii, Kawasaki, JP;
Hidesato Saruwatari, Kawasaki, JP;
Norio Takami, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A battery pack includes nonaqueous electrolyte batteries each comprising a positive electrode and a negative electrode. The positive electrode contains a lithium-transition metal oxide having a layered crystal structure. The negative electrode contains a lithium-titanium composite oxide having a spinel structure. And the positive electrodes and the negative electrodes satisfy the formula (1) given below:1.02≦X≦2  (1) where X is a ratio of an available electric capacity of each of the negative electrodes at 25° C. to an available electric capacity of each of the positive electrodes at 25° C.