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:
Jan. 05, 2016
Filed:
Dec. 12, 2012
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventor:
Hiroki Hayashi, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 9/00 (2006.01); B60R 16/02 (2006.01); B60R 16/03 (2006.01); H02J 9/06 (2006.01);
U.S. Cl.
CPC ...
H02J 9/00 (2013.01); B60R 16/02 (2013.01); B60R 16/03 (2013.01); H02J 9/005 (2013.01); H02J 9/061 (2013.01); Y02T 10/92 (2013.01);
Abstract
A controller is provided in an in-vehicle electronic control unit (ECU) for controlling a backup power source to maintain continuous power supply to a memory in a standby state of ACC-OFF using a battery of a vehicle. The controller reduces dark current in the standby state by reducing an output voltage of the backup power source of the ECU depending on a state of the battery of the vehicle. The controller may be provided to not only the single ECU but also other ECUs in the vehicle, thereby reducing the dark current in the whole of the vehicle.