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Electric power charge and discharge system

  • US 7,808,206 B2
  • Filed: 10/24/2007
  • Issued: 10/05/2010
  • Est. Priority Date: 10/31/2006
  • Status: Expired due to Fees
First Claim
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1. A method of charging and discharging an electric power comprising:

  • charging a first battery in a wireless driving portion using an electric power from a fixed power supply; and

    charging a second battery in a wireless charging portion using an electromagnetic wave from an external space,wherein the first battery and the second battery are discharged alternately, andwherein the second battery is charged at least during a period in which the first battery is discharged.

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