Wireless charging of devices
First Claim
Patent Images
1. A device, comprising:
- a receive coil configured to receive wirelessly transmitted power from a power transmitter when the receive coil is in a charging region of the power transmitter;
a rectifier coupled to the receive coil;
at least one sensing element configured to measure at least one parameter from the rectifier, the at least one parameter indicative of an amount of power available to be received from the power transmitter;
a switching element configured to convey energy from the rectifier to a load when the at least one parameter is greater than a threshold value; and
a control device coupled to the at least one sensing element, the control device configured to convey a control signal to the switching element based at least in part on the at least one parameter and to determine the threshold value based on a degree of loading of the device.
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Abstract
Exemplary embodiments are directed to wireless power charging. A device may include at least one sensing element for measuring at least one parameter within a receiver configured to receive wirelessly transmitted power. The device may include a switching element configured to enable the receiver to convey energy to a load when the at least one parameter exceeds a threshold value.
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Citations
32 Claims
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1. A device, comprising:
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a receive coil configured to receive wirelessly transmitted power from a power transmitter when the receive coil is in a charging region of the power transmitter; a rectifier coupled to the receive coil; at least one sensing element configured to measure at least one parameter from the rectifier, the at least one parameter indicative of an amount of power available to be received from the power transmitter; a switching element configured to convey energy from the rectifier to a load when the at least one parameter is greater than a threshold value; and a control device coupled to the at least one sensing element, the control device configured to convey a control signal to the switching element based at least in part on the at least one parameter and to determine the threshold value based on a degree of loading of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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measuring at least one parameter of a rectifier within a receiver, the at least one parameter indicative of an amount of power available to be received from a wireless power transmitter; conveying energy from the rectifier to a load if the at least one parameter is greater than a threshold value; and determining the threshold value by a control device based on a degree of loading of the receiver. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A device, comprising:
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means for receiving and rectifying wirelessly transmitted power; means for measuring at least one parameter of the receiving and rectifying means, the at least one parameter indicative of an amount of power available to be received from a wireless power transmitter; means for conveying energy from the receiving and rectifying means to a load, the conveying energy means configured to convey energy from the receiving and rectifying means to the load if the at least one parameter is greater than a threshold value; and means for determining the threshold value based on a degree of loading of the receiving and rectifying means. - View Dependent Claims (28, 29, 30, 31)
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32. A device, comprising:
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a receive coil configured to receive wirelessly transmitted power from a power transmitter when the receive coil is in a charging region of the power transmitter; a rectifier coupled to the receive coil; at least one sensing element configured to measure at least one parameter from the rectifier, the at least one parameter indicative of an amount of power available to be received from the power transmitter; a switching element configured to convey energy from the rectifier to a load when the at least one parameter satisfies a threshold value condition; and a control device coupled to the at least one sensing element, the control device configured to convey a control signal to the switching element based at least in part on the at least one parameter and to determine a threshold value of the threshold value condition based on a degree of loading of the device, wherein the switching element has a first state in which the switching element is configured to convey energy from the receiver to a load and a second state in which the switching element is configured to not convey energy from the rectifier to the load, the control device configured to determine the threshold value while the switching element is in the first state and to determine the threshold value while the switching element is in the second state.
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Specification