INDUCTIVE CHARGER AND CHARGING METHOD
First Claim
1. Inductive charger (10) to inductively provide power to one or more battery powered appliances, each appliance comprising a secondary coil for enclosing part of a magnetic field and in response generating a current for charging a battery of the appliance, the charger comprising:
- two or more primary coil pairs that are arranged in a circular pattern, wherein the circular pattern is adapted for enclosing the one or more secondary coils (20) of the appliances, andan AC power source for providing an alternating voltage (104) to the primary coil pairs for generating a rotating magnetic field (22) between respective primary coils (L1, L2, . . . , L8) of the primary coil pairs.
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Accused Products
Abstract
The present invention provides a charger for inductively charging one or more battery powered appliances simultaneously. The charger comprises an external unit adapted to inductively provide power to the battery powered appliances, the external unit comprising: two or more primary coil pairs that are arranged in a circular pattern; an AC power source for providing an alternating current (AC) to the primary coil pairs for generating a rotating magnetic field between respective primary coils of the primary coil pairs; and a processor for driving the AC power source, wherein the one or more battery powered appliances are adapted to be arranged inside the circular pattern of the external unit, each appliance comprising a secondary coil for enclosing part of the magnetic field and in response generating a current for charging the battery of the appliance.
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Citations
12 Claims
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1. Inductive charger (10) to inductively provide power to one or more battery powered appliances, each appliance comprising a secondary coil for enclosing part of a magnetic field and in response generating a current for charging a battery of the appliance, the charger comprising:
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two or more primary coil pairs that are arranged in a circular pattern, wherein the circular pattern is adapted for enclosing the one or more secondary coils (20) of the appliances, and an AC power source for providing an alternating voltage (104) to the primary coil pairs for generating a rotating magnetic field (22) between respective primary coils (L1, L2, . . . , L8) of the primary coil pairs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Method to inductively provide power to one or more battery powered appliances, each appliance comprising a secondary coil (20) for enclosing part of a magnetic field (22) and in response generating a current for charging a battery (40) of the appliance, the method comprising the steps of:
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providing a charger (10) including two or more primary coil pairs that are arranged in a circular pattern, wherein the circular pattern is adapted for enclosing the one or more secondary coils (20) of the appliances, and using an AC power source for providing an alternating voltage (104) to the primary coil pairs for generating a rotating magnetic field (22) between respective primary coils (L1, L2, . . . , L8) of the primary coil pairs. - View Dependent Claims (11, 12)
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Specification