Portable wireless charging device
First Claim
Patent Images
1. A wireless charging device, comprising:
- a charging battery;
a transmitter coupled to the charging battery;
a controller coupled to the charging battery and the transmitter to direct power from the charging battery to the transmitter and wirelessly transmit the power to a receiver, wherein the receiver is identified by the controller as one of a plurality of compatible receivers based on identification information exchanged wirelessly between the wireless charging device and the receiver;
a current sense circuit coupled to the transmitter and the controller, wherein the controller is configured to use data from the current sense circuit to determine if the receiver is properly aligned with the transmitter and to wirelessly transmit power from the transmitter to the receiver only if the receiver is at least partially properly aligned with the transmitter; and
a housing, wherein the charging battery, the transmitter, the controller, and the current sense circuit are disposed at least partly within the housing.
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Abstract
A wireless charging device includes a charging battery, a transmitter coupled to the charging battery, and a controller coupled to the charging battery and the transmitter. The controller is configured to direct power from the charging battery to the transmitter and wirelessly transmit the power to a receiver. The wireless charging device also includes a housing, wherein the charging battery, the transmitter, and the controller are disposed at least partly within the housing.
61 Citations
18 Claims
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1. A wireless charging device, comprising:
a charging battery; a transmitter coupled to the charging battery; a controller coupled to the charging battery and the transmitter to direct power from the charging battery to the transmitter and wirelessly transmit the power to a receiver, wherein the receiver is identified by the controller as one of a plurality of compatible receivers based on identification information exchanged wirelessly between the wireless charging device and the receiver; a current sense circuit coupled to the transmitter and the controller, wherein the controller is configured to use data from the current sense circuit to determine if the receiver is properly aligned with the transmitter and to wirelessly transmit power from the transmitter to the receiver only if the receiver is at least partially properly aligned with the transmitter; and a housing, wherein the charging battery, the transmitter, the controller, and the current sense circuit are disposed at least partly within the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless charging system, comprising:
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a wireless charger that includes a first battery, a transmitter coupled to the first battery, a first controller coupled to the first battery and the transmitter, and a current sense circuit coupled to the transmitter and the first controller, wherein the first battery, the transmitter, and the first controller are further disposed within a housing; a second battery; and a receiver coupled to the second battery, wherein the receiver is identified by the first controller as one of a plurality of compatible receivers based on identification information exchanged wirelessly between the wireless charger and the receiver, wherein the first controller is configured to direct power from the first battery to the transmitter and wirelessly transmit the power to the receiver, and wherein the receiver receives the wirelessly transmitted power to charge the second battery, and wherein the controller is configured to use data from the current sense circuit to determine if the receiver is properly aligned with the transmitter and to wirelessly transmit power from the transmitter to the receiver only if the receiver is at least partially properly aligned with the transmitter. - View Dependent Claims (12, 13, 14, 15)
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16. A method of wirelessly charging a device battery of a device, comprising the steps of:
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providing a wireless charger that includes an internal power supply and a transmitter; directing power from the internal power supply to the transmitter; determining whether a receiver associated with the device is one of a plurality of compatible receivers based on identification information exchanged wirelessly between the wireless charger and the device; determining, based on data received from a current sense circuit, whether the receiver is properly aligned with the transmitter; wirelessly transmitting power from the transmitter if the receiver is found to be at least partially properly aligned with the transmitter; receiving the wirelessly transmitted power at the receiver associated with a device; and directing the received power to operate the device. - View Dependent Claims (17, 18)
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Specification