CN-224230268-U - Air conditioner, wire controller and power supply circuit thereof

CN224230268UCN 224230268 UCN224230268 UCN 224230268UCN-224230268-U

Abstract

The application discloses an air conditioner, a wire controller and a power supply circuit thereof, wherein the power supply circuit of the wire controller comprises a first connecting end, a second connecting end, a first power supply end, a second power supply end, a standby power supply, a first access control module, a second access control module, a voltage detection module and a switching module, the voltage detection module is used for acquiring working voltage between the first power supply end and the second power supply end when a main control board is communicated with the first power supply end through the first access control module, and the switching module is used for controlling the main control board to be disconnected with the first power supply end through the first access control module and controlling the standby power supply to be communicated with the first power supply end through the second access control module when the working voltage is smaller than a preset voltage. The application can reduce the limit of the line length to the communication distance in the long-distance communication process of the main control board and the line controller, and reduce the requirement on the first connecting line, namely the power line, so as to save the cost.

Inventors

XIE ZHENWANG
CHEN FEIWEI
XIONG JUN

Assignees

广东TCL智能暖通设备有限公司

Dates

Publication Date: 20260512
Application Date: 20250513

Claims (10)

1. A power supply circuit of a wire controller, characterized in that the power supply circuit of the wire controller comprises: the air conditioner comprises a first connecting end, a second connecting end, a first power supply end, a second power supply end and a standby power supply, wherein the first connecting end is connected with a main control board of the air conditioner through a first connecting wire, and the second connecting end is connected with the main control board through a second connecting wire; The system comprises a first access control module, a second access control module, a standby power supply, a first power supply and a second power supply, wherein the first access control module is connected between the first connection end and the first power supply end; The system comprises a first power supply end, a second power supply end, a voltage detection module, a first access control module, a second access control module and a control module, wherein the first power supply end is connected with the first power supply end; The switching module is used for controlling the main control board to be disconnected from the first power supply end through the first access control module and controlling the standby power supply to be communicated with the first power supply end through the second access control module when the working voltage is smaller than a preset voltage.
2. The power supply circuit of the line controller according to claim 1, wherein the switching module includes a controller and a power supply switching unit, the controller includes a control port and a detection port, the control port is connected with the power supply switching unit, and the detection port is connected with the voltage detection module; The controller is used for acquiring the working voltage through the detection port, and outputting a corresponding control signal to the power supply switching unit through the control port when the working voltage is smaller than the preset voltage; The power supply switching unit is used for controlling the main control board to be disconnected with the first power supply end through the first access control module according to the corresponding control signal, and controlling the standby power supply to be communicated with the first power supply end through the second access control module.
3. The power supply circuit of the line controller according to claim 2, wherein the power supply switching unit comprises a first resistor, a second resistor and a first switching tube, one end of the first resistor is connected with the control port, the other end of the first resistor is connected with one end of the second resistor and the first end of the first switching tube, the other end of the second resistor is connected with the second connection end, the second end of the first switching tube is connected with the second connection end, and the third end of the first switching tube is connected with the first access control module and the second access control module respectively.
4. A power supply circuit of a wire controller according to claim 3, wherein the first access control module comprises a third resistor and a second switching tube, one end of the third resistor and the first end of the second switching tube are both connected with the third end of the first switching tube, the other end of the third resistor and the second end of the second switching tube are both connected with the first connection end, and the third end of the second switching tube is connected with the first power supply end.
5. The power supply circuit of a wire controller according to claim 3, wherein the second access control module comprises a fourth resistor, a fifth resistor, a third switching tube and a fourth switching tube, one end of the fourth resistor and one end of the fifth resistor are connected with the first end of the third switching tube, the other end of the fourth resistor and the second end of the third switching tube are connected with the positive electrode of the standby power supply, the third end of the third switching tube is connected with the first end of the fourth switching tube, the second end of the fourth switching tube is connected with the positive electrode of the standby power supply, and the third end of the fourth switching tube is connected with the first power supply end.
6. The power supply circuit of the wire controller according to claim 5, wherein the second access control module further comprises a sixth resistor, one end of the sixth resistor is connected to the first end of the fourth switching tube, and the other end of the sixth resistor is connected to the third end of the fourth switching tube.
7. A power supply circuit of a wire controller according to claim 3, wherein the voltage detection module comprises a seventh resistor and an eighth resistor, one end of the seventh resistor is connected to the first power supply terminal, the other end of the seventh resistor and one end of the eighth resistor are both connected to the detection port of the controller, and the other end of the eighth resistor is connected to the second power supply terminal.
8. A power supply circuit of a line controller according to claim 3, wherein the first switching tube comprises a triode, a first end of the first switching tube is a base electrode of the triode, a second end of the first switching tube is an emitter electrode of the triode, and a third end of the first switching tube is a collector electrode of the triode.
9. A drive-by-wire device, characterized in that it comprises a supply circuit of a drive-by-wire device as claimed in any one of claims 1-8.
10. An air conditioner, characterized in that the air conditioner comprises the line controller according to claim 9.

Description

Air conditioner, wire controller and power supply circuit thereof Technical Field The application relates to the technical field of electronics, in particular to an air conditioner, a wire controller and a power supply circuit thereof. Background In the application scenario of the air conditioner, the communication mode between the wire controller and the internal machine is usually RS485, and when the RS485 communication is adopted, 4 wires are usually used for communication, namely, a communication wire a, a communication wire B, a direct current power supply positive and a direct current power supply negative. In general, the direct current power supply required by the wire controller is generally provided by the internal machine controller, generally 12V direct current, and along with the increasing functions of the wire controller, such as WIFI, bluetooth and other peripheral devices with larger power consumption, a larger burden is brought to the power supply line, namely, when the installation distance between the internal machine and the wire controller is longer, larger loss is generated on the wire, and the requirements on the quality and the wire diameter of the power supply line are generally made for reducing the wire loss, so that the wire cost is increased. Disclosure of utility model The air conditioner, the wire controller and the power supply circuit thereof can effectively relieve the problem that the communication distance between the indoor unit of the air conditioner and the wire controller is limited due to the increase of the power consumption of the wire controller. The application provides a power supply circuit of a wire controller, which comprises: The air conditioner comprises a first connecting end, a second connecting end, a first power supply end, a second power supply end and a standby power supply, wherein the first connecting end is connected with a main control board of the air conditioner through a first connecting wire, and the second connecting end is connected with the main control board through a second connecting wire; the system comprises a first access control module and a second access control module, wherein the first access control module is connected between a first connecting end and a first power supply end; the system comprises a first power supply end, a second power supply end, a voltage detection module, a first access control module, a second access control module and a control module, wherein the first power supply end is connected with the first power supply end; The switching module is used for controlling the main control board to be disconnected with the first power supply end through the first access control module when the working voltage is smaller than the preset voltage, and controlling the standby power supply to be communicated with the first power supply end through the second access control module. In some embodiments, the switching module comprises a controller and a power supply switching unit, the controller comprises a control port and a detection port, the control port is connected with the power supply switching unit, and the detection port is connected with the voltage detection module; the controller is used for acquiring working voltage through the detection port, and outputting a corresponding control signal to the power supply switching unit through the control port when the working voltage is smaller than a preset voltage; the power supply switching unit is used for controlling the main control board to be disconnected with the first power supply end through the first access control module according to the corresponding control signal, and controlling the standby power supply to be communicated with the first power supply end through the second access control module. In some embodiments, the power supply switching unit includes a first resistor, a second resistor, and a first switching tube, one end of the first resistor is connected to the control port, the other end of the first resistor is connected to one end of the second resistor and a first end of the first switching tube, the other end of the second resistor is connected to the second connection end, a second end of the first switching tube is connected to the second connection end, and a third end of the first switching tube is connected to the first access control module and the second access control module, respectively. In some embodiments, the power supply circuit of the wire controller includes a third resistor and a second switching tube, one end of the third resistor and a first end of the second switching tube are connected with a third end of the first switching tube, the other end of the third resistor and a second end of the second switching tube are connected with the first connection end, and a third end of the second switching tube is connected with the first power supply end. In some embodiments, the power supply circuit of the wire controller comprises