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:
Oct. 08, 2013
Filed:
May. 26, 2009
Kenji Ueda, Nagoya, JP;
Satoru Mizuno, Okazaki, JP;
Shigenori Saito, Nukata-gun, JP;
Nippon Soken, Inc., Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
A battery condition estimation device estimates a pre-restart voltage drop amount ΔVjh+ΔVbn of a battery mounted to a vehicle during period Tto Tfrom initiation of an engine stop until initiation of an engine restart based on detection values regarding the battery condition. The device estimates a voltage drop amount ΔVst during period Tfrom initiation of the engine restart until completion of the engine restart based on the detection values regarding the battery condition. The device finally estimates a minimum voltage of the battery during period Tto Tfrom the initiation of the engine stop until the completion of the engine restart based on a voltage detection value Vjbefore the engine stop, the pre-restart voltage drop amount ΔVjh+ΔVbn, and the voltage drop amount ΔVst.