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:
Mar. 18, 2014
Filed:
Sep. 16, 2008
Hirokazu Kawai, Toyota, JP;
Yuichi Ibi, Toyohashi, JP;
Kunio Kanamaru, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Panasonic EV Energy Co., Ltd., Kosai-shi, JP;
Abstract
A lithium-ion secondary battery includes an aluminum case, an electrolytic solution, a positive plate, a negative plate, a positive terminal, a negative terminal, and voltage sensors. The positive terminal and the negative terminal project to the outside of the case while being insulated from the case. The voltage sensor is connected between the case and the positive terminal and detects the potential of the positive terminal with respect to a potential VR of the case. The voltage sensor is connected between the case and the negative terminal and detects the potential of the negative terminal with respect to the potential VR of the case. From the detected results, the states of the positive plate and the negative plate are separately detected.