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US 2019/0356153 A1Published application
Wireless Charging System, Wireless Charging Method, and Device To-Be-Charged
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsShiming Wan, Jialiang Zhang, Dongsun Yang, Shangbo Lin, Jiada Li
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Abstract
Provided are a wireless charging system, a wireless charging method, and a device to-be-charged. The wireless charging system includes a wireless charging device 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. In addition, the device to-be-charged has a step-down circuit.
Claims20
A wireless charging system, comprising a wireless charging device and a device to-be-charged, wherein
- the wireless charging device comprises:
- a wireless transmitting circuit, configured to transmit an electromagnetic signal to charge the device to-be-charged wirelessly;
- and
- a first communication control circuit, configured to conduct wireless communication with the device to-be-charged during wireless charging;
- the device to-be-charged comprises:
- a battery;
- a wireless receiving circuit, configured to receive the electromagnetic signal and convert the electromagnetic signal into an output voltage and an output current of the wireless receiving circuit;
- a step-down circuit, configured to receive and decrease the output voltage of the wireless receiving circuit to obtain an output voltage and an output current of a first charging channel, wherein the output voltage and the output current of the first charging channel is 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 second communication control circuit, configured to conduct wireless communication with the first communication control circuit according to the at least one of the voltage and the current in the first charging channel detected by the detecting circuit, whereby the first communication control circuit adjusts a transmission power of the wireless transmitting circuit 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.
8 more elements
A device to-be-charged, comprising:
- a battery;
- 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 step-down circuit, configured to receive and decrease the output voltage of the wireless receiving circuit to obtain an output voltage and an output current of a first charging channel, wherein the output voltage and the output current of the first charging channel is 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.
3 more elements
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;
- decreasing the output voltage of the wireless charging circuit to obtain an output voltage and an output current of a first charging channel of the device to-be-charged, and charging a battery according to the output voltage and the output current of the wireless receiving circuit;
- 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 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.
2 more elements
Dependencies are inferred from the claim text.