Title:
IMPEDANCE CONTROL DEVICE, CHARGER, POWER RECEIVER, AND POWER SUPPLY SYSTEM
Document Type and Number:
Japanese Patent JP2020092570
Kind Code:
A
Abstract:
To provide an impedance control device for a wireless power feeding system, capable of performing power feeding without hindering load modulation communication.SOLUTION: Provided is an impedance control device for adjusting impedance in a power feeding system. The impedance control device includes: a voltage monitor unit for monitoring an input voltage converted from a wireless signal of the power feeding system; an adjustment unit for adjusting impedance with respect to the input voltage; a load modulation unit for applying load modulation to the input voltage; and a timing control unit for controlling an adjustment timing at which the adjustment unit adjusts the impedance and a start timing at which the load modulation unit starts the load modulation. The timing control unit sets a predetermined interference prevention interval between the adjustment timing and the start timing.SELECTED DRAWING: Figure 3A
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Inventors:
ENOMOTO HIROAKI
TAGA SHIRO
TAGA SHIRO
Application Number:
JP2018230218A
Publication Date:
June 11, 2020
Filing Date:
December 07, 2018
Export Citation:
Assignee:
ASAHI KASEI DENSHI KK
International Classes:
H02J7/00; H02J50/80; H02J50/10; H04B5/02
Attorney, Agent or Firm:
Longhua International Patent Service Corporation