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:
Aug. 13, 2019
Filed:
Mar. 03, 2016
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Takuma Iida, Kanagawa, JP;
Hiroyuki Jimbo, Aichi, JP;
Takeshi Chiba, Osaka, JP;
Shunsuke Nitta, Ishikawa, JP;
Kazuhiro Sugie, Shizuoka, JP;
Abstract
A sensor of a status determination device detects a magnitude of a terminal voltage of an auxiliary battery provided separately from a driving battery and a magnitude of a current flowing through the auxiliary battery. The driving battery is an electrical power source for a driving motor of a vehicle, and the auxiliary battery is an electrical power source for auxiliary equipment and has an output voltage lower than that of the driving battery. An internal resistance calculator calculates an internal resistance of the auxiliary battery based on the magnitude of the terminal voltage and the magnitude of the current detected by the sensor in a stable period that is before the auxiliary equipment is started and in which the magnitude of the terminal voltage and the magnitude of the current fall within predetermined fluctuation ranges, and those detected in a period after starting of the auxiliary equipment is detected.