Patent ID: 11923717
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A charging circuit, comprising a transmitting circuit,
wherein the transmitting circuit is configured to wirelessly transmit electric energy to a receiving circuit, receive a feedback signal of the receiving circuit, and wirelessly transmit a control signal to the receiving circuit;
the transmitting circuit comprises a control circuit and a second energy storage circuit coupled to the control circuit, and the control circuit is also coupled to a power supply other than the charging circuit;
the control circuit comprises a fourth switch sub-circuit, a fourth signal input terminal, a fifth switch sub-circuit, a fifth signal input terminal, a third energy storage circuit, a power input terminal, a feedback detection resistor, and a load modulation feedback terminal;
a first terminal of the fourth switch sub-circuit is coupled to the power input terminal, a second terminal of the fourth switch sub-circuit is coupled to a first terminal of the third energy storage circuit, a third terminal of the fourth switch sub-circuit is coupled to the fourth signal input terminal, and the fourth switch sub-circuit is configured to be turned on or turned off according to a first charging control signal input by the fourth signal input terminal;
a first terminal of the fifth switch sub-circuit is coupled to the second terminal of the fourth switch sub-circuit, a second terminal of the fifth switch sub-circuit is coupled to a first terminal of the feedback detection resistor, a third terminal of the fifth switch sub-circuit is coupled to the fifth signal input terminal, and the fifth switch sub-circuit is configured to be turned on or turned off according to a second charging control signal input by the fifth signal input terminal;
the first terminal of the feedback detection resistor is coupled to the load modulation feedback terminal, a second terminal of the feedback detection resistor is coupled to a first voltage terminal, and the feedback detection resistor is configured to respond to the feedback signal transmitted by the receiving circuit and output the feedback signal through the load modulation feedback terminal; and
a second terminal of the third energy storage circuit is connected to a first terminal of the second energy storage circuit, and a second terminal of the second energy storage circuit is coupled to the first voltage terminal.