Wireless battery charger and charge-receiving device
First Claim
1. A wireless charging apparatus for charging a battery of a portable electronic device, the wireless charging apparatus comprising;
- a plurality of electrically conductive coils, the conductive coils each forming a portion of a perimeter around a receiving area configured to receive the portable electronic device, each conductive coil having a central axis around which the respective conductive coil is formed, the central axis of each conductive coil directed inward from the perimeter, each conductive coil in the plurality of conductive coils including at least one loop of electrically conductive material, the ends of each conductive coil constituting electrical leads; and
electronic circuitry, comprising;
an electric power receiving circuit configured to receive electrical power and to provide at least a portion of the electrical power to a coil controller, andthe coil controller, electrically connected to the electric power receiving circuit and to the electrical leads of the conductive coils, the controller configured to selectively provide a changing electric current to at least one of the conductive coils, the changing electric current inducing a magnetic field around the respective conductive coil selected for receiving the changing electrical current.
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Accused Products
Abstract
A wireless charger includes a plurality of conductive coils and electronic circuitry. The coils are disposed around a perimeter and face a generally central area of the perimeter. The coils are connected to and controlled by the electronic circuitry, which includes an electric power receiving circuit and a coil controller. The electric power receiving circuit receives electrical power from an external source and conditions the power for provision to the coil controller. The coil controller controls provision of an oscillating current to select coils within the plurality of coils. A protective enclosure or portable electronic device may have receiving coils disposed at its sides for corresponding to at least two of the conductive coils of the wireless charger.
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Citations
12 Claims
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1. A wireless charging apparatus for charging a battery of a portable electronic device, the wireless charging apparatus comprising;
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a plurality of electrically conductive coils, the conductive coils each forming a portion of a perimeter around a receiving area configured to receive the portable electronic device, each conductive coil having a central axis around which the respective conductive coil is formed, the central axis of each conductive coil directed inward from the perimeter, each conductive coil in the plurality of conductive coils including at least one loop of electrically conductive material, the ends of each conductive coil constituting electrical leads; and electronic circuitry, comprising; an electric power receiving circuit configured to receive electrical power and to provide at least a portion of the electrical power to a coil controller, and the coil controller, electrically connected to the electric power receiving circuit and to the electrical leads of the conductive coils, the controller configured to selectively provide a changing electric current to at least one of the conductive coils, the changing electric current inducing a magnetic field around the respective conductive coil selected for receiving the changing electrical current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification