Title:
CHARGING CONTROLLER AND CHARGING CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2013/046391
Kind Code:
A1
Abstract:
A charging controller using wireless power supply presents a risk that a cycle for sampling the current value/voltage value of a secondary side is lengthened and the measurement value of the controlled object does not converge to a target value. A charging controller (10) is provided with a chopper circuit (12), a primary side coil (15), a primary side inverter circuit (20), and a controller (30). A device to be charged (100) is provided with a secondary side coil (60) and a secondary side rectifier circuit (40) that is connectable to a storage cell (53). The controller (30) samples a secondary side signal in a second cycle, samples a primary side signal in a first cycle shorter than the second cycle, and performs feedback control of a control signal so that a predetermined signal from the secondary side rectifier circuit (40) becomes constant, by estimating the secondary side signal corresponding to the timing of the most recently sampled primary side signal, on the basis of the secondary side signal, the primary side signal when the secondary side signal was sampled, and the most recently sampled primary side signal.
Inventors:
SAWAYANAGI HIRONORI (JP)
ARIYOSHI NOBUTAKA (JP)
ARIYOSHI NOBUTAKA (JP)
Application Number:
PCT/JP2011/072356
Publication Date:
April 04, 2013
Filing Date:
September 29, 2011
Export Citation:
Assignee:
HITACHI ENG SERVICE (JP)
SAWAYANAGI HIRONORI (JP)
ARIYOSHI NOBUTAKA (JP)
SAWAYANAGI HIRONORI (JP)
ARIYOSHI NOBUTAKA (JP)
International Classes:
H02J17/00; H02J7/00
Foreign References:
| JP2001275280A | 2001-10-05 | |||
| JP2006345588A | 2006-12-21 | |||
| JP2007336717A | 2007-12-27 | |||
| JP2011045195A | 2011-03-03 |
Other References:
See also references of EP 2763279A4
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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Claims: