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:
Oct. 07, 2003

Filed:

Dec. 09, 2002
Applicant:
Inventors:

Koichiro Takemasa, Kawachi-gun, JP;

Yutaka Tamagawa, Utsunomiya, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 ; H02J 7/04 ; H02G 3/00 ;
U.S. Cl.
CPC ...
H02J 7/00 ; H02J 7/04 ; H02G 3/00 ;
Abstract

A hybrid vehicle and a control method of the hybrid vehicle is provided, capable of suppressing discharge of the battery at the time of starting a DC/DC converter and suppressing temporal voltage drop of the battery. When the engine is in the idle state and the power generated by the motor is not sufficient, the motor controller starts the DC/DC converter at a low output voltage state, and the amount of power generated by the motor is gradually increased at a speed without disturbing the idle rotation of the engine, and when it is determined that the power generation by the motor is sufficiently high by comparing the amount of power generation with the amount of power consumption at the output of the DC/DC converter, the operation mode of the output variable DC/DC converter is switched from the low voltage mode to the high voltage mode.


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