A kind of power supply method and device
A technology of a power supply method and a power supply device, which is applied in the direction of circuit devices, battery circuit devices, selection devices, etc., can solve problems such as abnormal operation, damage, and power failure of power supply accessories, and achieve the effect of avoiding abnormal operation
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Embodiment 1
[0039] refer to figure 1 , shows a schematic diagram of the connection relationship provided by the embodiment of the present invention. The PD hub 101 is respectively connected to a power adapter 102, a power accessory 103 and at least one mobile terminal, the power accessory 103 is a bus power supply device, and the mobile terminal includes at least one mobile terminal with a FRS function; the mobile terminal with an FRS function The terminal is connected to the first port of the PD hub.
[0040] In this embodiment, the PD hub 101 is a Hub based on the PD charging protocol specification, and has at least 1 UFP port, 1 DRP port, and 2 DFP ports, where the UFP port is connected to the power adapter 102, and the power adapter 102 can be based on PD charging. protocol travel charger; the DRP port is connected to the first mobile terminal 104, and the first mobile terminal 104 can be a smart phone supporting full functions of the PD charging protocol; a DFP port is connected to ...
Embodiment 2
[0059] refer to Figure 5 , shows a flowchart of steps of a power supply method provided by an embodiment of the present invention. Applied to mobile terminals 104 and 105 with FRS function, the mobile terminals 104 and 105 are connected to the first port of the PD hub 101, and the PD hub 101 is connected to the power accessory 103, and the power accessory 103 is a bus power supply device;
[0060] The methods include:
[0061] Step 301 , receiving a handshake message carrying an FRS request sent by the PD hub 101 .
[0062] In this embodiment, the first mobile terminal 104 and the second mobile terminal 105 have the FRS function. After receiving the handshake message sent by the PD hub 101, they parse the FRS request from the handshake message and determine whether their own status is suitable for supporting FRS, and send a response to PD hub 101. If NAK (Negative Acknowledgment, no response) is returned, FRS is not supported.
[0063] Step 302, send a handshake feedback ...
Embodiment 3
[0069] refer to Figure 6 , shows a structural block diagram of a power supply device 400 provided by an embodiment of the present invention. Deployed on a PD hub, the PD hub is respectively connected to a power adapter, a power accessory, and at least one mobile terminal, the power accessory is a bus-powered device, and the mobile terminal includes at least one mobile terminal with FRS function; A functional mobile terminal is connected to the first port of the PD hub;
[0070] The devices include:
[0071] A charging path detection module 401, configured to detect whether the charging path between the power adapter and the PD hub is disconnected;
[0072] A handshake message sending module 402, configured to send a handshake message carrying an FRS request to the mobile terminal with the FRS function through the first port if it is detected that the charging path is disconnected;
[0073] The first state transition module 403 is configured to, when receiving handshake fee...
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