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. 07, 1999
Filed:
Aug. 24, 1998
Yasukazu Kitamine, Kariya, JP;
Satoru Kodama, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
In a driving system for vehicles having a high voltage main battery for a vehicle drive motor and a low voltage accessory battery for accessory devices such as a radio receiver, a three-phase inverter circuit for driving the vehicle drive motor and a DC-DC converter are connected to the main battery through electromagnetically shielded high voltage power lines. The DC-DC converter supplies a low voltage electric power to a driver circuit for switching on and off the inverter circuit. Switching noise voltages caused by switching operations in the inverter circuit, the driver circuit and the DC-DC converter are restricted from being superimposed on low voltage power lines connecting the accessory battery to the accessory devices.