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:
Feb. 18, 2003
Filed:
Oct. 22, 2001
Koji Kodama, Hanno, JP;
Masaharu Kaneko, Hanno, JP;
Kazuyuki Kubo, Wako, JP;
Tadashi Fujiwara, Wako, JP;
Other;
Abstract
When charging a battery of a low-voltage system, a battery charging apparatus of the present invention switches on a field-effect transistor and distributes the output of a generator via a diode to the battery. Further, when charging a battery of a high-voltage system, the battery charging apparatus switches off the field-effect transistor and distributes the output of the generator via the diode to the battery. At this time, the field-effect transistor is switched, and chops the output of the generator. Then, by selecting the duty of a clock signal for controlling this switching, the output powers of the generator when charging the high-voltage system and when charging the low-voltage system are made substantially equal, reducing fluctuation in the input torque of the generator.