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. 16, 2010
Filed:
Jul. 26, 2006
Tosihiko Oohasi, Osaka, JP;
Yohsuke Mitani, Osaka, JP;
Tosihiko Oohasi, Osaka, JP;
Yohsuke Mitani, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A vehicle power supply device performs highly accurate determination of degradation of the capacitor unit as follows. Internal resistance and capacitance are corrected according to the temperature of capacitor unit during charge or discharge, thereby obtaining a corrected calculated value if capacitance. The corrected calculated value of capacitance is substituted into a degradation determination formula, which is pre-calculated according to the temperature, thereby calculating the standard value corresponding to the temperature detected by temperature sensor. When the standard value is equal to or less than the corrected calculated value of internal resistance, capacitor unit is determined to be degraded.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile