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:
Dec. 20, 2022
Filed:
Jul. 12, 2019
Applicant:
Denso Corporation, Kariya, JP;
Inventors:
Haruo Suzuki, Kariya, JP;
Takashi Suzuki, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 27/08 (2006.01); H02P 25/08 (2016.01); H02P 29/028 (2016.01); B62D 5/04 (2006.01); H02P 27/06 (2006.01); H02P 25/22 (2006.01);
U.S. Cl.
CPC ...
H02P 29/028 (2013.01); B62D 5/046 (2013.01); H02P 25/22 (2013.01); H02P 27/06 (2013.01);
Abstract
A control unit determines a presence or absence of a short-circuit failure with respect to a target switch which is a phase-opening switch to be determined. At this time, after opening all the phase opening switches, the control unit drives an inverter to connect a power supply line provided with the target switch among the phase opening switches to ground. The control unit determines that the target switch has a short-circuit failure when a voltage of the power supply line in which the target switch is not provided is smaller than a predetermined voltage.