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:
Jun. 22, 2010
Filed:
Jul. 21, 2006
Tosihiko Oohasi, Osaka, JP;
Yohsuke Mitani, Osaka, JP;
Junji Takemoto, Hyogo, JP;
Kazuki Morita, Osaka, JP;
Yoshimitu Odajima, Osaka, JP;
Tosihiko Oohasi, Osaka, JP;
Yohsuke Mitani, Osaka, JP;
Junji Takemoto, Hyogo, JP;
Kazuki Morita, Osaka, JP;
Yoshimitu Odajima, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A vehicle power supply device has a capacitor unit including capacitors storing auxiliary power; a temperature sensor; a charge circuit; a capacitor-unit current detector; a capacitor-unit voltage detector; a controller; a storage; and a determination unit. The determination unit determines the degradation level of the capacitor unit based on at least one of an internal resistance standard value and a corrected calculated value of capacitance. This structure determines degradation of the vehicle power supply device more accurately than ever, so that the device can be used until the end of the actual life.