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System for Wireless Charging Control Based Magnetic Resonance Type

  • US 20150054452A1
  • Filed: 05/28/2014
  • Published: 02/26/2015
  • Est. Priority Date: 08/22/2013
  • Status: Abandoned Application
First Claim
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1. A wireless charging control system based on a magnetic resonance type, comprising:

  • an oscillator generating power for contactless charging;

    a transmitting oscillation circuit including a power source coil to which the power is input and a power source capacitor connected to the power source coil in parallel to convert a capacitance so as to cause oscillation at a specific frequency;

    a power transmitter unit including a transmitting resonance circuit which includes a transmitting resonance coil causing resonance by changing an inductance and a capacitance to be resonated at the same frequency in the transmitting oscillation circuit and a transmitting resonance capacitor connected to the transmitting resonance coil in series;

    a receiving resonance coil including a receiving resonance coil receiving electromagnetic waves generated by the power transmitter unit and absorbing input energy by being resonated at the same frequency and a receiving resonance capacitor connected to the receiving resonance coil in series;

    a power receiving circuit including a load element coil to receive power of energy stored in the receiving resonance circuit by changing an impedance and a load element capacitor connected to the load element coil in series; and

    a receiving charger unit including a controller sensing a strength of current and a charging voltage transferred to a battery unit to change the receiving resonance capacitor or the load element capacitor.

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