Wireless charging device, wireless charging method, and device to-be-charged
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsShiming Wan, Jialiang Zhang, Dongsun Yang, Shangbo Lin, Jiada Li
Life of this patent
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Abstract
Provided are a wireless charging device, a wireless charging method, and a device to-be-charged. The wireless charging device is configured to conduct wireless communication with the device to-be-charged through communication control circuits to adjust a transmission power of the wireless charging device. The device to-be-charged includes a battery, a wireless receiving circuit, a first charging channel, a detecting circuit, and a communication control circuit.
Claims20
A wireless charging device, comprising:
- a wireless transmitting circuit, configured to transmit an electromagnetic signal to charge a device to-be-charged wirelessly;
- and
- a communication control circuit, configured to conduct wireless communication with the device to-be-charged during wireless charging and adjust a transmission power of the electromagnetic signal of the wireless transmitting circuit according to the wireless communication.
A device to-be-charged, comprising:
- a battery, comprising N cells coupled in series, wherein N is a positive integer greater than one;
- a wireless receiving circuit, configured to receive an electromagnetic signal from a wireless charging device and convert the electromagnetic signal into an output voltage and an output current of the wireless receiving circuit;
- a first charging channel, through which the output voltage and the output current of the wireless receiving circuit are received and provided to the battery for charging;
- a detecting circuit, configured to detect at least one of a voltage and a current in the first charging channel;
- and
- a communication control circuit, configured to conduct wireless communication with the wireless charging device according to the at least one of the voltage and the current in the first charging channel detected by the detecting circuit, wherein the wireless charging device is configured to adjust a transmission power of the wireless charging device according to the wireless communication, to make at least one of an output voltage and an output current of the first charging channel match at least one of a charging voltage and a charging current currently required by the battery.
A method for wirelessly charging a device to-be-charged, comprising:
- receiving, with a wireless receiving circuit, an electromagnetic signal from a wireless charging device, and converting the electromagnetic signal into an output voltage and an output current of the wireless receiving circuit;
- charging a battery through a first charging channel according to the output voltage and the output current of the wireless receiving circuit, wherein the battery comprises N cells coupled in series, and N is a positive integer greater than one;
- detecting at least one of a voltage and a current in the first charging channel;
- and
- conducting wireless communication with the wireless charging device according to the at least one of the voltage and the current detected in the first charging channel, wherein the wireless charging device adjusts a transmission power of the wireless charging device according to the wireless communication, to make at least one of an output voltage and an output current of the first charging channel match at least one of a charging voltage and a charging current currently required by the battery.
Dependencies are inferred from the claim text.