WIRELESS BATTERY CHARGING
First Claim
1. A wireless power transfer system, comprising:
- a device comprising a battery and a load;
a receiver adapted to receive wireless power and deliver received power to the battery, the receiver having an output coupled via a rectifier to the device, the receiver including electronics configured to measure a parameter of the battery and communicate the measured parameter wirelessly; and
a transmitter inductively coupled to the receiver, the transmitter being driven by a power source and a transmit controller, wherein the transmit controller is configured to control delivery of wireless power from the transmitter to the receiver based on the measured battery parameter.
1 Assignment
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Accused Products
Abstract
Systems and designs for charging a battery in a wireless power transfer system are provided, which may include any number of features. In one embodiment, an implantable wireless power receiver is coupled to a battery with a rectifier circuit. The receiver can include battery monitor circuitry configured to measure a parameter of the battery. The receiver can be configured to wirelessly communicate the parameter of the battery to the transmitter, which can control delivery of power from the transmitter to the receiver based on the measured battery parameter. Power can be delivered to the battery without utilizing a battery charge control circuit in the device or receiver. Methods of use are also provided.
40 Citations
19 Claims
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1. A wireless power transfer system, comprising:
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a device comprising a battery and a load; a receiver adapted to receive wireless power and deliver received power to the battery, the receiver having an output coupled via a rectifier to the device, the receiver including electronics configured to measure a parameter of the battery and communicate the measured parameter wirelessly; and a transmitter inductively coupled to the receiver, the transmitter being driven by a power source and a transmit controller, wherein the transmit controller is configured to control delivery of wireless power from the transmitter to the receiver based on the measured battery parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of charging a battery with a wireless power transfer system having an inductively coupled transmitter and receiver, comprising the steps of:
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measuring a battery parameter of a device coupled to the receiver; wirelessly communicating the battery parameter from the receiver to the transmitter; delivering wireless power from the transmitter to the receiver based on the battery parameter without utilizing a battery charge control circuit in the device or receiver; and delivering power received by the receiver to the battery. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A wireless power transfer system, comprising:
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an external wireless power transmitter comprising a transmitter coil; an implantable wireless power receiver comprising a receiver coil inductively coupled to the transmitter coil of the wireless power transmitter, the wireless power receiver comprising a rectifier on an output of the wireless power receiver; an implantable medical device comprising a battery and a load, the implantable medical device being coupled to the rectifier of the wireless power receiver; a battery measurement circuit disposed in the wireless power receiver and being configured to measure battery parameter; a receive controller disposed in the receiver and being configured to communicate the measured battery parameter wirelessly to the wireless power transmitter; and a transmit controller disposed in the wireless power transmitter and being configured to control delivery of power from the wireless power transmitter to the wireless power receiver based on the measured battery parameter received from the receiver.
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Specification