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. 02, 2022
Filed:
Oct. 23, 2020
Honda Motor Co., Ltd., Tokyo, JP;
Hitachi Astemo, Ltd., Ibaraki, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
A power supply system () includes: a drive motor (M) coupled to drive wheels (W); a first inverter () which converts DC electric power into three-phase AC electric power; a first current sensor (I) which generates a current detection signal according to electrical current flowing in the first inverter (), and a system ECU () which executes discharge control for discharging electrical charge of a second smoothing capacitor (C) connected to the first inverter (), in a case of a discharge start condition being established. The system ECU (), in a case of the drive motor (M) rotating upon starting the discharge control, executes the discharge control, after executing three-phase short-circuit control to turn ON all switching elements of an upper arm or all switching elements of a lower arm of the three-phase arm of the first inverter (), based on the current detection signal of the sensor (I).