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.

Date of Patent:
Dec. 07, 2004

Filed:

Mar. 20, 2003
Applicant:
Inventors:

Minoru Suzuki, Saitama, JP;

Yutaka Tamagawa, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 3/00 ;
U.S. Cl.
CPC ...
H02P 3/00 ;
Abstract

A vehicle drive device substantially has a motor and a power supplying apparatus. The power supplying apparatus has a main battery, a sub-battery, a power drive unit, a capacitor, a contactor, and a control unit. Under control by the control unit, misjudgment of failure of precharge contactor owing to a voltage drop of the battery can be prevented from being occurred.


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