Remote wireless charging transmit end, receive end, and system

Patent metadata

Field	Value
Publication number	US-12476493-B2
Application number	US-202217693831-A
Country	US
Kind code	B2
Filing date	Mar 14, 2022
Priority date	Apr 29, 2020
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

A remote wireless charging transmit end is configured to wirelessly charge a receive end. The transmit end includes a transmit end processor, a fundamental frequency-radio frequency conversion unit, and a transmit end antenna. The transmit end processor is configured to generate a composite signal based on a control signal and a power signal, and send the composite signal to the fundamental frequency-radio frequency conversion unit. The control signal is used to control a working status of the receive end, and the power signal is used to charge the receive end. The fundamental frequency-radio frequency conversion unit is configured to convert the composite signal into a radio frequency signal, and send the radio frequency signal to the transmit end antenna. The transmit end antenna is configured to transmit the radio frequency signal corresponding to the composite signal.

First claim

What is claimed is:

1 . A remote wireless charging transmit end configured to wirelessly charge a receive end, the transmit end comprising:
a transmit end processor configured to generate a composite signal based on a control signal and a power signal, and send the composite signal to a fundamental frequency-radio frequency conversion unit, wherein the control signal is used to control a working status of the receive end, and the power signal is used to charge the receive end, wherein the transmit end processor is further configured to: generate a phase-modulated signal based on the control signal, and generate the composite signal based on the phase-modulated signal; the fundamental frequency-radio frequency conversion unit configured to convert the composite signal into a radio frequency signal, and send the radio frequency signal to a transmit end antenna; and the transmit end antenna configured to transmit the radio frequency signal corresponding to the composite signal.

2 . The transmit end according to claim 1 , wherein the transmit end antenna is further configured to receive a feedback signal transmitted by the receive end, and send the feedback signal to the fundamental frequency-radio frequency conversion unit;
the fundamental frequency-radio frequency conversion unit is further configured to convert the feedback signal into a fundamental frequency signal, and send the fundamental frequency signal to the transmit end processor.

3 . The transmit end according to claim 2 , wherein the feedback signal carries at least one of location information of the receive end or battery level information of the receive end; and
the transmit end processor is further configured to perform at least one of adjusting the power signal in response to determining, based on the location information, that a location of the receive end changes, or adjusting the control signal and the power signal based on the battery level information.

4 . The transmit end according to claim 3 , wherein the transmit end processor is further configured to: generate a high peak-to-average power ratio (PAPR) waveform based on a communication bandwidth and the power signal, and generate the composite signal based on the phase-modulated signal and the high PAPR waveform.

5 . The transmit end according to claim 4 , wherein the transmit end processor is configured to generate the high PAPR waveform of a multi-tone signal based on the communication bandwidth, a quantity of tones, and the power signal.

6 . The transmit end according to claim 4 , wherein the transmit end processor is further configured to adjust the high PAPR waveform based on the feedback signal.

7 . The transmit end according to claim 2 , wherein the transmit end further comprises a first switching switch;
wherein the fundamental frequency-radio frequency conversion unit comprises a signal sending path and a signal receiving path; wherein a first end of the first switching switch is connected to the transmit end antenna; and wherein the transmit end processor is configured to control a second end of the first switching switch to connect to the signal sending path, to send the composite signal, and is further configured to control the second end of the first switching switch to connect to the signal receiving path, to receive the feedback signal.

8 . The transmit end according to claim 2 , wherein the transmit end antenna comprises a transmit end transmit antenna and a transmit end receive antenna;
wherein the fundamental frequency-radio frequency conversion unit comprises a signal sending path and a signal receiving path; wherein the transmit end transmit antenna is connected to the signal sending path, and the transmit end transmit antenna is configured to transmit the composite signal; and wherein the transmit end receive antenna is connected to the signal receiving path, and the transmit end receive antenna is configured to receive the feedback signal.

9 . A remote wireless charging receive end, comprising:
a receive end antenna configured to receive a radio frequency signal transmitted by a transmit end, wherein the radio frequency signal is a composite signal generated by the transmit end based on a control signal, a power signal and a phase-modulated signal generated based on the control signal; a receive end processor configured to control a working status of the receive end based on the control signal; a communications module configured to obtain the control signal from the composite signal, and send the control signal to the receive end processor; and a power module configured to convert the composite signal into energy for storage, to supply power to the receive end processor and the communications module.

10 . The receive end according to claim 9 , wherein the receive end processor is further configured to send a feedback signal to the communications module, wherein the feedback signal carries at least one of location information of the receive end or battery level information of the receive end;
the communications module is further configured to: convert the feedback signal into a radio frequency signal, and send the radio frequency signal to the receive end antenna.

11 . The receive end according to claim 10 , wherein the receive end antenna is further configured to transmit the radio frequency signal corresponding to the feedback signal, so that the transmit end adjusts the control signal and the power signal based on at least one of the location information of the receive end or the battery level information.

12 . The receive end according to claim 9 , wherein the receive end further comprises a second switching switch and a third switching switch, wherein
the communications module comprises a communication sending path and a communication receiving path; wherein a first end of the second switching switch is connected to the receive end antenna; and wherein the receive end processor is configured to: to receive the composite signal, first control a second end of the second switching switch to connect to a first end of the third switching switch, control a second end of the third switching switch to connect to the communication receiving path, and then control the second end of the second switching switch to connect to the power module.

13 . The receive end according to claim 11 , wherein the receive end further comprises a second switching switch and a third switching switch;
wherein the communications module comprises a communication sending path and a communication receiving path; wherein a first end of the second switching switch is connected to the receive end antenna; and wherein the receive end processor is configured to: to send the feedback signal, control a second end of the second switching switch to connect to a first end of the third switching switch, and control a second end of the third switching switch to connect to the communication sending path.

14 . The receive end according to claim 11 , wherein the receive end antenna comprises a receive end receive antenna and a receive end transceiver antenna;
wherein the receive end receive antenna is connected to the power module, and the receive end receive antenna is configured to receive the composite signal; wherein the receive end further comprises a fourth switching switch, and a first end of the fourth switching switch is connected to the receive end transceiver antenna; wherein the communications module comprises a communication sending path and a communication receiving path; and wherein the receive end processor is configured to control a second end of the fourth switching

Assignees

• Huawei Digital Power Tech Co Ltd

Inventors

• Pan Ning
• Du Zhixia
• Cai Bing

Classifications

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• G08C17/02

  using a radio link · CPC title

• H04B1/04

  Circuits · CPC title

• H02J50/20 Primary

  using microwaves or radio frequency waves · CPC title