A control circuit and power supply system for a power supply device

Abstract

A control circuit and power supply system for a power supply device are disclosed to ensure the safe execution of the device's functions and improve its operational reliability. The control circuit includes a first signal line, a second signal line, a third signal line, and a control switch. The first signal line is connected to the first power module of the power supply device; the second signal line is connected to the last power module; all power modules within the power supply device are connected via the third signal line. When the control switch is closed, a control signal is transmitted to each power module via the first, second, and third signal lines. The first, second, and third signal lines form a closed control loop. If a break occurs in the signal transmission line, the control signal can be transmitted through the signal line on the other side of the break, ensuring that all power modules can receive the control signal, thus improving the operational reliability of the power supply device.

Claims

1. A control circuit for a power supply device, characterized in that it comprises: First signal line, second signal line, third signal line, and control switch; The first signal line is connected to the first power module of the power supply equipment; the second signal line is connected to the last power module of the power supply equipment; the third signal line is used for connection between multiple power modules of the power supply equipment; the control switch is connected to the first signal line and the second signal line, and is used to transmit a control signal to each power module of the power supply equipment through the signal loop formed by the first signal line, the second signal line and the third signal line when the control switch is closed.

2. The control circuit of the power supply equipment as described in claim 1, wherein, If the control switch is connected to the first signal line and the second signal line via a connector, the control circuit of the power supply equipment further includes a fourth signal line. The monitoring system of the power supply equipment is connected to the fourth signal line via the connector. The fourth signal line is connected to each power module of the power supply equipment. The fourth signal line is used to send the connection status of the first signal line, the second signal line, and the third signal line to the monitoring system.

3. The control circuit of the power supply equipment as described in claim 1 or 2, wherein, The control circuit of the power supply equipment also includes a first switch; the first switch and the control switch are linked switches, the first switch is used to connect to the monitoring system of the power supply equipment, and send the on / off status of the control switch to the monitoring system.

4. The control circuit of the power supply equipment as described in claim 1 or 2, wherein, The control switch is located on the monitoring equipment of the power supply equipment.

5. The control circuit for the power supply equipment as described in claim 1, wherein, The control signal is either a high-level signal or a low-level signal.

6. A power supply system, characterized in that it comprises: A power supply device, a monitoring system, and a control circuit for at least one power supply device as claimed in any one of claims 1 to 5; wherein the power supply device comprises a plurality of power modules, and the control circuit of each power supply device has a different control switch: each power module is used to connect to a power source and a load, convert the electrical energy output by the power source into the supply voltage of the load, and supply power to the load; wherein the plurality of power modules are connected in series or in parallel; the control circuit of each power supply device is connected to each power module and the monitoring system.

7. The power supply system as described in claim 6, wherein, Each power module is a DC-DC converter.

8. The power supply system as described in claim 6, wherein, Each power module is an AC converter.

9. The power supply system as described in any one of claims 6 to 8, wherein, Each power module is either a battery system or a supercapacitor module.

10. The power supply system as described in any one of claims 6 to 8, wherein, The power supply system also includes a communication line, which is connected to the monitoring system and each power module. The monitoring system is used to send a control signal to each power module through the communication line when the control switch in the control circuit of the power supply equipment is closed.

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