BATTERY CHARGING APPARATUS FOR VEHICLE

Japanese Patent JP2015165763

A

PROBLEM TO BE SOLVED: To suppress decrease in the charging efficiency of a battery when a gap occurs between a power generation period and an energization period.SOLUTION: A driver 14 converts three-phase AC power output from a winding of each phase of a stator 13 of a generator 11 into DC power using a plurality of switching elements to supply the DC power to a battery 15. A control circuit 16 controls switching between an energized state and non-energized state of each of the switching elements. A position detection unit 17 outputs a position detection signal Tp indicating a position of a rotor 12 of the generator 11. The control circuit 16 obtains a next estimation power generation period of the generator 11 on the basis of the previous position detection signal and determines a next energization period of each of the switching elements on the basis of the estimation power generation period. The control circuit 16 determines start of the energization period on the basis of input of the position detection signal, and, if a period until next input of the position detection signal exceeds the energization period, during the period until the next input of the phase detection signal Tp, the control circuit has a maintenance period in which the switching elements are maintained in the energized state or non-energized state immediately before the period until the next input exceeds the energization period.

SONODA YUTAKA
OUCHI KATSUHIRO
ONO KAZUHIKO
TAKAYAMA KEIJI

JP2014238129A

September 17, 2015

November 25, 2014

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HONDA MOTOR CO LTD

H02P9/04

JP2004140927A	2004-05-13
JP2010148341A	2010-07-01
JP2004173482A	2004-06-17
JP2005124328A	2005-05-12

US20040085047A1

2004-05-06

Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Nagakawa Yukimitsu

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