Hybrid charging method for wireless power transmission based on pocket-forming
First Claim
Patent Images
1. A method for wireless power charging, the method comprising:
- when a receiver coupled to an electronic device is within a threshold distance from a transmitter;
receiving, by at least one antenna of the receiver, a plurality of wireless power transmission waves transmitted by the transmitter, wherein the plurality of wireless power transmission waves constructively interferes at the receiver;
converting, by the at least one antenna of the receiver, the plurality of wireless power transmission waves that constructively interfere at the receiver into an alternating current (AC) voltage;
rectifying, by a rectifier of the receiver, the AC voltage to a direct current (DC) voltage, wherein the rectifier is coupled to the at least one antenna;
converting, by a power converter of the receiver, the DC voltage to a constant DC voltage output, wherein the power converter is coupled to the rectifier; and
providing, by the power converter of the receiver, the constant DC voltage output to a backup battery of the receiver to at least partially charge the backup battery, wherein the power converter is coupled to the backup battery; and
when the receiver is not within the threshold distance from the transmitter, and after providing the constant DC voltage output to the backup battery to at least partially charge the backup battery, draining the backup battery to provide power to a battery of the electronic device.
2 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure provides a hybrid charging method for wireless power transmission based on pocket-forming. This method may extend the battery life of electronic devices such as tablets, smartphones, Bluetooth headsets, smart-watches among others. The method may include wireless power transmission through suitable techniques such as pocket-forming, while including an additional source of energy (backup battery) in the receiver attached or connected to the electronic device.
-
Citations
20 Claims
-
1. A method for wireless power charging, the method comprising:
-
when a receiver coupled to an electronic device is within a threshold distance from a transmitter; receiving, by at least one antenna of the receiver, a plurality of wireless power transmission waves transmitted by the transmitter, wherein the plurality of wireless power transmission waves constructively interferes at the receiver; converting, by the at least one antenna of the receiver, the plurality of wireless power transmission waves that constructively interfere at the receiver into an alternating current (AC) voltage; rectifying, by a rectifier of the receiver, the AC voltage to a direct current (DC) voltage, wherein the rectifier is coupled to the at least one antenna; converting, by a power converter of the receiver, the DC voltage to a constant DC voltage output, wherein the power converter is coupled to the rectifier; and providing, by the power converter of the receiver, the constant DC voltage output to a backup battery of the receiver to at least partially charge the backup battery, wherein the power converter is coupled to the backup battery; and when the receiver is not within the threshold distance from the transmitter, and after providing the constant DC voltage output to the backup battery to at least partially charge the backup battery, draining the backup battery to provide power to a battery of the electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A wireless power receiving system, the system comprising:
-
an electronic device comprising a controller and a battery; a receiver coupled to the electronic device, the receiver comprising; an antenna configured to, when the receiver is within a threshold distance from a transmitter; receive a plurality of wireless power transmission waves transmitted by the transmitter, wherein the plurality of wireless power transmission waves constructively interfere at the receiver, and convert the plurality of wireless power transmission waves that constructively interfere at the receiver into an alternating current (AC) voltage; a rectifier coupled to the antenna, wherein the rectifier is configured to rectify the AC voltage into a DC voltage; a power converter configured to convert the DC voltage into a constant DC voltage, wherein the power converter is configured to charge a backup battery of the receiver and the battery of the electronic device external to the receiver based on the constant DC voltage; the backup battery coupled to the power converter, wherein the backup battery is configured to receive the constant DC voltage from the power converter, wherein the constant DC voltage is sufficient to charge the backup battery; wherein the controller is configured to, when the receiver is not within the threshold distance from the transmitter, and after the backup battery receives the constant DC voltage to at least partially charge the backup battery, drain the backup battery to provide power to the battery of the electronic device. - View Dependent Claims (16, 17, 18, 19)
-
-
20. A receiver coupled to an electronic device, the receiver comprising:
-
at least one antenna configured to, when the receiver is within a threshold distance from a transmitter; receive a plurality of wireless power transmission waves transmitted by the transmitter, wherein the plurality of wireless power transmission waves constructively interferes at the receiver, and convert the plurality of wireless power transmission waves that constructively interfere at the receiver into an alternating current (AC) voltage; a rectifier coupled to the at least one antenna, wherein the rectifier is configured to rectify the AC voltage into a DC voltage; and a power converter configured to; convert the DC voltage into a constant DC voltage output, and provide the constant DC voltage output to a backup battery of the receiver, wherein the backup battery, after receiving at least a partial charge, is drained to provide power to a battery of the electronic device when the receiver is not within the threshold distance from the transmitter.
-
Specification