POWER TRANSMISSION METHOD OF HIGH-POWER WIRELESS INDUCTION POWER SUPPLY SYSTEM

  • US 20110291489A1
  • Filed: 10/06/2010
  • Published: 12/01/2011
  • Est. Priority Date: 05/31/2010
  • Status: Active Grant
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First Claim
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1. A power transmission method used in a high-power wireless induction power supply system comprising a power-supplying module and a power-receiving module, said power-supplying module comprising a power-supplying microprocessor having installed therein a software and a memory, a power circuit electrically connected to said power-supplying microprocessor and electrically connectable to an external power source, a first driver circuit and a second driver circuit each consisting of a plurality of parallelly connected MOSFET arrays and electrically connected in parallel to said power-supplying microprocessor, a power-supplying resonance circuit electrically connected to said first driver circuit and consisting of a capacitor array and a power-supplying coil array that is adapted for receiving power supply from said second driver circuit and emitting a power energy, a signal sampling circuit electrically connected to said power-supplying coil array, a data analysis circuit electrically connected between said power-supplying microprocessor and said signal sampling circuit, and a voltage sensor circuit having one end thereof electrically connected with said data analysis circuit to said power-supplying microprocessor and an opposite end thereof electrically connected to said signal sampling circuit in a parallel manner relative to said data analysis circuit, the power transmission method comprising the steps of:

  • (a1) system starts up system initialization, and said power-supplying microprocessor runs built-in program and reads in system parameters from said memory immediately after initialization of the system;

    (a2) system scans coil resonant points where said power-supplying microprocessor automatically scans the frequency of the resonant maximum point of the capacitor array and power-supplying coil array of said power supply resonance circuit, the frequency of resonant minimum point defined by the system, the system operation normal resonance frequency, the system operation maximum resonance frequency and the frequency of resonant maximum point outputted by said power-supplying microprocessor;

    (a3) said power-supplying microprocessor stores the respective frequency values in said memory;

    (a4) system enters the standby mode in which said power-supplying microprocessor outputs any PWM signal to said first driver circuit and said second driver circuit, said power-supplying resonance circuit emits no electromagnetic energy, and the system starts to count a predetermined clock cycle;

    (a5) the time of the clock cycle is up, and said power-supplying microprocessor outputs a transient PWM signal to said first driver circuit and said second driver circuit, causing said power-supplying resonance circuit to emit an electromagnetic energy for delivering power supply;

    (a6) system scans data signal status where said signal sampling circuit detects said power-supplying coil array to check the receipt of a feedback data signal from said power-receiving module, and then the system proceeds to step (a7) when said signal sampling circuit receives a feedback data signal from said power-receiving module, or returns to step (a4) when said signal sampling circuit receives no signal;

    (a7) system enters the power-supplying mode and then said power-supplying microprocessor outputs a continuous PWM signal to said first driver circuit/said second driver circuit, causing said power-supplying resonance circuit to emit an electromagnetic energy and to transmit power supply to said power-receiving module; and

    (a8) system interrupts the power-supplying mode and enters the standby mode, and then repeats step (a4).

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