Power supply control device
View Patent ↗A power supply control device is disclosed. The device includes a power input port configured to be connected to a power source, a first output port configured to transmit power to a first electrical device, a second output port configured to transmit power to a second electrical device, and a third output port configured to transmit power to a third electrical device. A microprocessor, operating in response to a user-selected mode, compares a current value corresponding to power transmitted through the first output port to the first electrical device, and controls power transmission to the third electrical device via at least a third relay based on the comparison. The device enables automatic coordination of power transmission among multiple electrical devices, thereby eliminating the need for manual activation and deactivation and enhancing user convenience.
1 . A power supply control device, comprising:
a power input port configured to be connected to a power source;
a first output port configured to be electrically connected to a first electrical device, wherein the first output port is electrically connected to the power input port to supply power to the first electrical device, and a current value of the power supplied to the first electrical device is defined as a first output current;
a second output port configured to be electrically connected to a second electrical device, wherein a second relay is disposed in series between the power input port and the second output port to control power transmission to the second electrical device, and a current value of the power supplied to the second electrical device is defined as a second output current;
a third output port configured to be electrically connected to a third electrical device, wherein a third relay is disposed in series between the power input port and the third output port to control power transmission to the third electrical device;
a microprocessor electrically connected to a first sensor, a second sensor, the second relay, and the third relay, wherein the first sensor is electrically connected to the first output port and is configured to detect and transmit the first output current to the microprocessor, and wherein the second sensor is electrically connected to the second output port and is configured to detect and transmit the second output current to the microprocessor; and
a mode switch electrically connected to the microprocessor and operable by a user to send control signals to the microprocessor, wherein the microprocessor is configured to execute an application to select between Mode 1 and Mode 2 to control the power supply to the second electrical device and the third electrical device;
wherein, in Mode 1, the microprocessor coordinates power transmission from the second output port and the third output port based on the power status of the first output port; and wherein, in Mode 2, the microprocessor coordinates power transmission from the third output port based on the power statuses of both the first output port and the second output port.
2 . The power supply control device according to claim 1 , further comprising a voltage rectification module electrically connected between the power input port and the microprocessor, the voltage rectification module being configured to supply rectified DC power to the microprocessor when the power input port is connected to an AC power source.
3 . The power supply control device according to claim 1 , further comprising a second driver circuit electrically connected between the second relay and the microprocessor and configured to amplify a control signal transmitted from the microprocessor to the second relay; and a third driver circuit electrically connected between the third relay and the microprocessor and configured to amplify a control signal transmitted from the microprocessor to the third relay.