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:
Nov. 08, 2011
Filed:
May. 15, 2009
Tomoko Shimana, Nissin, JP;
Hironari Kimura, Kariya, JP;
Tomoko Shimana, Nissin, JP;
Hironari Kimura, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
A vehicle drive apparatus includes a battery that is a direct current power source, a converter that increases the voltage of the battery, an inverter connected to a motor that drives the vehicle, an inverter connected to a motor generator that functions as a motor or generator, and a motor control device that controls the motor. The vehicle drive device is also provided with a voltmeter, non-energized state determination devices that determine a non-energized state of the inverters, and ammeters that detect currents applied to a motor from each phase arm of the inverters. Signals of these devices and a signal from the non-energized state determination device are sent to the motor control device.