Outdoor unit control circuit, outdoor unit and air conditioner

Abstract

The utility model discloses an outdoor unit control circuit, an outdoor unit and an air conditioner, the outdoor unit control circuit comprises a first controllable switch unit suitable for receiving a wake-up instruction sent by an indoor unit and suitable for being connected with a power supply; the first input end of the second controllable switch unit is connected with the first controllable switch unit, the first output end of the second controllable switch unit is suitable for being connected with an indoor unit, and a communication loop is established between the second controllable switch unit and the first controllable switch unit and between the second controllable switch unit and the indoor unit so that the first controllable switch unit can be turned on; the outdoor unit comprises a first controllable switch unit, a second controllable switch unit, a first charging unit and an outdoor unit control unit, the first charging unit is configured to supply power according to a power supply provided by the first controllable switch unit, and the outdoor unit control unit is further configured to control the second controllable switch unit to supply power to the first charging unit under the condition that the outdoor unit is awakened, and the second controllable switch unit stops signal transmission with the indoor unit under the condition that the power supply is provided for the first charging unit.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an outdoor unit control circuit, an outdoor unit, and an air conditioner. Background Art

[0002] In the related art, a split air conditioner consists of an indoor unit and an outdoor unit, and data exchange between them is usually carried out through a current loop communication circuit. The indoor unit uses a high-power relay to control the power supply of the outdoor unit. Since a high-power relay needs to be installed in the indoor unit control circuit, this causes an increase in the volume of the electric control part of the indoor unit. Moreover, when the high-power relay is working, especially at the moment of cutting off the power supply, a large current impact may occur, and the current may flow through the indoor unit control circuit, causing the indoor unit control circuit to overheat, thereby increasing the risk of fire. Summary of the Utility Model

[0003] The present utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, the first object of the present utility model is to propose an outdoor unit control circuit. The first controllable switch unit is arranged in the communication loop between the indoor unit and the outdoor unit. By using the communication loop, the first controllable switch unit is turned on to supply power to the outdoor unit. And after the outdoor unit is successfully awakened, the first controllable switch unit is cut off from the communication loop, which will not affect the normal communication of the outdoor unit. In this way, the relay on the indoor unit side can be cancelled, thereby reducing the volume of the indoor unit electric control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0004] The second object of the present utility model is to propose an outdoor unit.

[0005] The third object of the present utility model is to propose an air conditioner.

[0006] To achieve the above object, according to an embodiment of the first aspect of the present invention, an outdoor unit control circuit is provided, including: a first controllable switch unit, a first control end of the first controllable switch unit is adapted to receive a wake-up instruction sent by an indoor unit, and an input end of the first controllable switch unit is adapted to be connected to a power supply; a second controllable switch unit, a first input end of the second controllable switch unit is connected to a second control end of the first controllable switch unit, a first output end of the second controllable switch unit is adapted to be connected to the indoor unit, a second input end of the second controllable switch unit is adapted to be connected to the power supply, and the second controllable switch unit is configured to establish a communication loop with the first controllable switch unit and the indoor unit when the first controllable switch unit receives the wake-up instruction, so as to turn on the first controllable switch unit; a first charging unit and an outdoor unit control unit, an input end of the first charging unit is respectively connected to an output end of the first controllable switch unit and a second output end of the second controllable switch unit, an output end of the first charging unit is connected to a power supply end of the outdoor unit control unit, and the first charging unit is configured to supply power to the outdoor unit control unit according to the power supply provided by the first controllable switch unit to wake up the outdoor unit. The outdoor unit control unit is further configured to control the second controllable switch unit to supply power to the first charging unit when the outdoor unit completes waking up. Wherein, when the second controllable switch unit supplies power to the first charging unit, it stops transmitting signals to the indoor unit.

[0007] The outdoor unit control circuit according to an embodiment of the present utility model includes a first controllable switch unit, a second controllable switch unit, a first charging unit, and an outdoor unit control unit. Among them, the first control end of the first controllable switch unit is adapted to receive a wake-up instruction sent by an indoor unit, the input end of the first controllable switch unit is adapted to be connected to a power supply, the first input end of the second controllable switch unit is connected to the second control end of the first controllable switch unit, the first output end of the second controllable switch unit is adapted to be connected to the indoor unit, the second input end of the second controllable switch unit is adapted to be connected to the power supply, and the second controllable switch unit is configured to establish a communication loop with the first controllable switch unit and the indoor unit when the first controllable switch unit receives the wake-up instruction, so that the first controllable switch unit is turned on. The input end of the first charging unit is respectively connected to the output end of the first controllable switch unit and the second output end of the second controllable switch unit, and the output end of the first charging unit is connected to the power supply end of the outdoor unit control unit. The first charging unit is configured to supply power to the outdoor unit control unit according to the power supply provided by the first controllable switch unit to wake up the outdoor unit. The outdoor unit control unit is further configured to control the second controllable switch unit to supply power to the first charging unit when the outdoor unit completes waking up. Wherein, when the second controllable switch unit supplies power to the first charging unit, it stops signal transmission with the indoor unit. Thus, when the outdoor unit needs to be powered on, the indoor unit sends a wake-up instruction to the first receiving unit, and the first receiving unit, the first controllable switch unit, and the second controllable switch unit form a communication loop with the indoor unit, so that the first controllable switch unit is turned on. After the first controllable switch unit is turned on, it supplies power to the first charging unit, and the first charging unit generates a first power supply according to the power supply to supply power to the outdoor unit control unit, thereby waking up the outdoor unit. After the outdoor unit completes waking up, by controlling the second controllable switch unit to supply power to the first charging unit, the first controllable switch unit is cut off from the communication loop, which will not affect the normal communication of the outdoor unit. Therefore, the indoor unit only needs to send a wake-up instruction through the first receiving unit to power on and wake up the outdoor unit, without the need to set a relay in the indoor unit to control the power on or off of the outdoor unit, thereby reducing the volume of the indoor unit's electronic control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0008] According to an embodiment of the present utility model, the second controllable switch unit includes: a first relay, a first end of the first relay is adapted to be connected to a power supply, a second end of the first relay is left floating, a third end of the first relay is connected to an input end of the first charging unit, a fourth end of the first relay is connected to a second control end of the first controllable switch unit, a fifth end of the first relay is left floating, and a sixth end of the first relay is adapted to be connected to an indoor unit. Wherein, the second end and the third end of the first relay are normally closed contacts, and the fourth end and the sixth end of the first relay are normally closed contacts; a driving module, an input end of the driving module is connected to a first output end of an outdoor unit control unit, an output end of the driving module is connected to a coil of the first relay, and the driving module is configured to drive the first end and the third end of the first relay to attract and the fifth end and the sixth end of the first relay to attract according to a control signal sent by the outdoor unit control unit.

[0009] According to an embodiment of the present utility model, the outdoor unit control circuit further includes: a voltage detection unit, an input end of the voltage detection unit is connected to an output end of the first charging unit, an output end of the voltage detection unit is connected to a first input end of the outdoor unit control unit, and the voltage detection unit is configured to perform voltage detection on the output voltage of the first charging unit to obtain a voltage detection value and send the voltage detection value to the outdoor unit control unit, so that the outdoor unit control unit determines that the outdoor unit has completed wake-up when the voltage detection value is greater than a preset voltage threshold.

[0010] According to an embodiment of the present utility model, the outdoor unit control circuit further includes: a first receiving unit, an input end of the first receiving unit is adapted to receive a wake-up instruction, an output end of the first receiving unit is connected to a first control end of the first controllable switch unit, and the first receiving unit is configured to provide the wake-up instruction to the first controllable switch unit.

[0011] According to an embodiment of the present utility model, the first receiving unit includes: a first resistor, one end of the first resistor is adapted to be connected to an indoor unit, and the other end of the first resistor is connected to a first control end of the first controllable switch unit; a first opto-coupler, an anode of a light-emitting part of the first opto-coupler is connected to one end of the first resistor, a cathode of the light-emitting part of the first opto-coupler is connected to the other end of the first resistor, and one end of a light-receiving part of the first opto-coupler is adapted to input a preset power supply; a second resistor, one end of the second resistor is connected to the other end of the light-receiving part of the first opto-coupler, and the other end of the second resistor is grounded; a third resistor, one end of the third resistor is connected to one end of the second resistor, and the other end of the third resistor is connected to a second input end of the outdoor unit control unit.

[0012] According to an embodiment of the present utility model, the outdoor unit control circuit further includes: a first sending unit, an input end of the first sending unit is connected to an output end of the first receiving unit, and an output end of the first sending unit is adapted to be connected to an indoor unit; a second output end of the outdoor unit control unit is connected to a control end of the first sending unit, and the outdoor unit control unit is further configured to control the first sending unit to perform signal transmission with the indoor unit when controlling the second controllable switch unit to supply power to the first charging unit and lasting for a first preset duration, so that the outdoor unit enters a communication state.

[0013] According to an embodiment of the present utility model, the first sending unit includes: a first triode, a control end of the first triode is connected to the outdoor unit control unit through a fourth resistor, and an emitter of the first triode is grounded; a fifth resistor, one end of the fifth resistor is connected to a collector of the first triode; a sixth resistor, one end of the sixth resistor is adapted to be connected to a preset power supply, and the other end of the sixth resistor is connected to the other end of the fifth resistor; a second optocoupler, an anode of a light emitting part of the second optocoupler is connected to one end of the fifth resistor, a cathode of the light emitting part of the second optocoupler is connected to the other end of the fifth resistor, one end of a light receiving part of the second optocoupler is connected to an output end of the first receiving unit, and the other end of the light receiving part of the second optocoupler is adapted to be connected to the outdoor unit.

[0014] According to an embodiment of the present utility model, the first receiving unit is further adapted to receive a shutdown instruction sent by the indoor unit, the first receiving unit is further connected to a first input end of the outdoor unit control unit, and the first receiving unit is further configured to send the shutdown instruction to the outdoor unit control unit, so that the outdoor unit control unit controls the second controllable switch unit to stop supplying power to the first charging unit when the outdoor unit enters a communication state and receives the shutdown instruction.

[0015] According to an embodiment of the present utility model, the first controllable switch unit includes a solid state relay.

[0016] According to an embodiment of the present utility model, the first charging unit includes: a first rectification module, a first end of the first rectification module is adapted to be connected to a neutral line, and a second end of the first rectification module is respectively connected to an output end of the first controllable switch unit and a second output end of the second controllable switch unit; a first electrolytic capacitor, one end of the first electrolytic capacitor is respectively connected to a third end of the first rectification module and a power supply end of the outdoor unit control unit, and the other end of the first electrolytic capacitor is respectively connected to a fourth end of the first rectification module and an output end of the outdoor unit control unit.

[0017] To achieve the above object, according to a second aspect embodiment of the present utility model, an outdoor unit is provided, including: the outdoor unit control circuit of any one of the foregoing embodiments.

[0018] According to the outdoor unit of the embodiment of the present utility model, by adopting the above-mentioned outdoor unit control circuit, the first controllable switch unit is arranged in the communication loop between the indoor unit and the outdoor unit. The communication loop is used to turn on the first controllable switch unit to supply power to the outdoor unit. After the outdoor unit is successfully awakened, the first controllable switch unit is cut off from the communication loop, which will not affect the normal communication of the outdoor unit. In this way, the relay on the indoor unit side can be cancelled, thereby reducing the volume of the indoor unit's electronic control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0019] To achieve the above object, according to the third aspect embodiment of the present utility model, an air conditioner is provided, including: an indoor unit adapted to send a wake-up command; the aforementioned outdoor unit, which is connected to the indoor unit and is configured to be awakened when receiving the wake-up command.

[0020] According to the air conditioner of the embodiment of the present utility model, by adopting the above-mentioned outdoor unit, the first controllable switch unit is arranged in the communication loop between the indoor unit and the outdoor unit. The communication loop is used to turn on the first controllable switch unit to supply power to the outdoor unit. After the outdoor unit is successfully awakened, the first controllable switch unit is cut off from the communication loop, which will not affect the normal communication of the outdoor unit. In this way, the relay on the indoor unit side can be cancelled, thereby reducing the volume of the indoor unit's electronic control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the outdoor unit control circuit and the indoor unit control circuit in the related art;

[0023] Figure 2 is a schematic structural diagram of the outdoor unit control circuit and the indoor unit control circuit according to an embodiment of the present utility model;

[0024] Figure 3 is a circuit diagram of the outdoor unit control circuit and the indoor unit control circuit according to an embodiment of the present utility model;

[0025] Figure 4 is a circuit diagram of the outdoor unit control circuit and the indoor unit control circuit in the operating state according to an embodiment of the present utility model;

[0026] Figure 5 is a circuit diagram of the outdoor unit control circuit and the indoor unit control circuit according to another embodiment of the present utility model;

[0027] Figure 6 is a schematic structural diagram of an outdoor unit according to an embodiment of the present utility model;

[0028] Figure 7 is a schematic structural diagram of an air conditioner according to an embodiment of the present utility model. Detailed implementation manners

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0030] It should be noted that this application is made by the inventor's recognition and research on the following problems:

[0031] In the related art, the indoor unit and the outdoor unit of a split air conditioner usually communicate using a current loop communication circuit as Figure 1 shown. As Figure 1 shown, the indoor unit control circuit 200 is provided with a relay K. One end of the relay K is adapted to be connected to the live wire L, and the other end of the relay K is connected to the outdoor unit control circuit 100. When the relay K is closed, the outdoor unit is powered on; when the relay K is turned off, the outdoor unit is powered off. Since a high-power relay K is added to the indoor unit control circuit 200, the volume of the indoor unit electric control is relatively large. Moreover, when the high-power relay K is cut off, current will flow through the indoor unit control circuit 200, thereby increasing the risk of fire in the indoor unit control circuit 200.

[0032] Based on this, the embodiments of the present utility model provide an outdoor unit control circuit, an outdoor unit and an air conditioner. A first controllable switch unit is arranged in the communication loop between the indoor unit and the outdoor unit. The communication loop is used to turn on the first controllable switch unit to supply power to the outdoor unit. After the outdoor unit is successfully awakened, the first controllable switch unit is cut off from the communication loop, which will not affect the normal communication of the outdoor unit. In this way, the relay on the indoor unit side can be cancelled, thereby reducing the volume of the indoor unit electric control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0033] The outdoor unit control circuit, the outdoor unit and the air conditioner according to the embodiments of the present utility model will be described below with reference to the drawings.

[0034] Figure 2 is a schematic structural diagram of the outdoor unit control circuit and the indoor unit control circuit according to an embodiment of the present utility model. As Figure 2As shown, the outdoor unit control circuit 100 includes: a first controllable switch unit 110, a second controllable switch unit 120, a first charging unit 130, and an outdoor unit control unit 140.

[0035] Among them, the first control end of the first controllable switch unit 110 is adapted to receive a wake-up instruction sent by the indoor unit, and the input end of the first controllable switch unit 110 is adapted to be connected to a power supply; the first input end of the second controllable switch unit 120 is connected to the second control end of the first controllable switch unit 110, the first output end of the second controllable switch unit 120 is adapted to be connected to the indoor unit, the second input end of the second controllable switch unit 120 is adapted to be connected to the power supply, and the second controllable switch unit 120 is configured to establish a communication loop with the first controllable switch unit 110 and the indoor unit when the first controllable switch unit 110 receives the wake-up instruction, so as to turn on the first controllable switch unit 110; the input end of the first charging unit 130 is respectively connected to the output end of the first controllable switch unit 110 and the second output end of the second controllable switch unit 120, the output end of the first charging unit 130 is connected to the power supply end of the outdoor unit control unit, and the first charging unit 130 is configured to supply power to the outdoor unit control unit 140 according to the power supply provided by the first controllable switch unit 110 to wake up the outdoor unit. The outdoor unit control unit 140 is further configured to control the second controllable switch unit 120 to supply power to the first charging unit 130 when the outdoor unit completes waking up. Among them, when the second controllable switch unit 120 supplies power to the first charging unit 130, it stops signal transmission with the indoor unit.

[0036] Specifically, the indoor unit includes an indoor unit control circuit 200. The indoor unit control circuit 200 is connected to the outdoor unit control circuit 100 through a communication line S, a neutral line N, a live line L, and a common ground wire PE. The indoor unit control circuit 200 includes a second charging unit 210, a second sending unit 220, a second receiving unit 230, and an indoor unit control unit 240. The input end of the second charging unit 210 is connected to the live line L and the neutral line N to generate a second power supply according to the power supply and supply power to the indoor unit control unit 240 to power on the indoor unit. The output end of the second receiving unit 230 is connected to the input end of the second sending unit 220. After the indoor unit is powered on, if the indoor unit control unit 240 receives an instruction that the outdoor unit needs to be powered on, the indoor unit control unit 240 controls the second sending unit 220 to send a wake-up instruction to the first controllable switch unit 110 through the neutral line N. The second sending unit 220, the neutral line N, the first controllable switch unit 110, the second controllable switch unit 120, the communication line S, and the second receiving unit 230 form a communication loop. Therefore, the first controllable switch unit 110 is in an on state. The input end of the first controllable switch unit 110 is adapted to be connected to the live line L. The first controllable switch unit 110 provides power to the first charging unit 130 in the on state. The first charging unit 130 generates a first power supply according to the power supply to supply power to the outdoor unit control unit 140 to wake up the outdoor unit. After the outdoor unit is woken up, the second controllable switch unit 120 provides power to the first charging unit 130, and at the same time, the second controllable switch unit 120 stops signal transmission. Therefore, the communication loop formed by the second sending unit 220, the neutral line N, the first controllable switch unit 110, the second controllable switch unit 120, the communication line S, and the second receiving unit 230 is disconnected, and the first controllable switch unit 110 is cut off from the communication loop, which will not affect the normal communication between the outdoor unit and the indoor unit.

[0037] Optionally, such as Figure 3As shown, the second transmitting unit 220 includes a second triode Q2, a third optocoupler IC3, an eighth resistor R8, a ninth resistor R9, and a regulated power supply 221. The control terminal of the second triode Q2 is connected to the first output terminal of the indoor unit control unit 240 through a seventh resistor R7. The emitter of the second triode Q2 is grounded. The collector of the second triode Q2 is connected to one end of the eighth resistor R8. The other end of the eighth resistor R8 is connected to one end of the ninth resistor R9. The other end of the ninth resistor R9 is adapted to input a preset power supply. The anode of the light-emitting part of the third optocoupler IC3 is connected to the other end of the eighth resistor R8. The cathode of the light-emitting part of the third optocoupler IC3 is connected to one end of the eighth resistor R8. The light-receiving part of the third optocoupler IC3 is connected to the regulated power supply 221. The regulated power supply 221 includes a tenth resistor R10, a first zener diode ZV1, an eleventh resistor R11, a second zener diode ZV2, a first capacitor C1, and a twelfth resistor R12. The tenth resistor R10 is connected in parallel between both ends of the light-receiving part of the third optocoupler IC3. The first zener diode ZV1 is connected in parallel with the tenth resistor R10. One end of the eleventh resistor R11 is respectively connected to the anode of the first zener diode ZV1, the anode of the second zener diode ZV2, and the other end of the first capacitor C1. The other end of the eleventh resistor R11 is connected to the cathode of the second zener diode ZV2. One end of the first capacitor C1 is respectively connected to the cathode of the second zener diode ZV2 and the neutral line N. One end of the twelfth resistor R12 is connected to the anode of the first zener diode ZV1. The other end of the twelfth resistor R12 is connected to the live wire L through a first diode D1.

[0038] As Figure 3 shown, the second receiving unit 230 includes a second diode D2, a first thermistor PTC1, a fourth optocoupler IC4, a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth resistor R15. The anode of the second diode D2 is connected to the communication line S. The cathode of the second diode D2 is connected to one end of the first thermistor PTC1. The other end of the first thermistor PTC1 is respectively connected to one end of the thirteenth resistor R13 and the anode of the light-emitting part of the fourth optocoupler IC4. The cathode of the light-emitting part of the fourth optocoupler IC4 is respectively connected to the other end of the thirteenth resistor R13 and one end of the light-receiving part of the third optocoupler IC3. One end of the light-receiving part of the fourth optocoupler IC4 is adapted to input a preset power supply. The other end of the light-receiving part of the fourth optocoupler IC4 is respectively connected to one end of the fourteenth resistor R14 and one end of the fifteenth resistor R15. The other end of the fourteenth resistor R14 is connected to the first input terminal of the indoor unit control unit 240. The other end of the fifteenth resistor R15 is grounded.

[0039] Specifically, when the indoor unit control unit 240 receives an instruction that the outdoor unit needs to be powered on, the indoor unit control unit 240 controls the second triode Q2 to turn on, the third optocoupler IC3 to turn on, and the regulated power supply 221 to generate a DC power supply. The current signal (i.e., the wake-up instruction) generated by the DC power supply is transmitted to the first receiving unit 160 through the neutral line N, and then the current signal flows into the first control end of the first controllable switch unit 110, flows out from the second control end of the first controllable switch unit 110, then flows into the first input end of the second controllable switch unit 120, flows out from the first output end of the second controllable switch unit 120, and then flows into the fourth optocoupler IC4 through the communication line S to turn on the fourth optocoupler IC4, and then flows into the third optocoupler IC3, thus forming a communication loop. When the second controllable switch unit 120 stops transmitting signals with the indoor unit, the current cannot flow out from the first output end of the second controllable switch unit 120, so the communication loop cannot be formed, and the first controllable switch unit 110 disconnects from the communication loop.

[0040] In an alternative embodiment, the indoor unit control unit 240 is further configured to generate a first prompt message for prompting that the wake-up of the outdoor unit fails or the outdoor unit is faulty if the first input end of the indoor unit control unit 240 is at a low level and lasts for a second preset duration after controlling the second sending unit 220 to send a wake-up instruction to the first receiving unit 160. The indoor unit control unit 240 is further configured to generate a first prompt message if the first input end of the indoor unit control unit 240 is at a low level after controlling the second sending unit 220 to send a wake-up instruction to the first receiving unit 160 multiple times.

[0041] Specifically, when the indoor unit and the outdoor unit are working normally, after the second sending unit 220 sends a wake-up instruction, the second controllable switch unit 120 inputs a current signal to the second receiving unit 230 through the communication line S. After the second receiving unit 230 is turned on, it inputs an electrical signal to the outdoor unit control unit 140, and the first input end of the indoor unit control unit 240 is at a high level. In this way, the indoor unit control unit 240 can determine whether the outdoor unit is faulty according to the electrical signal at the first input end of the indoor unit control unit 240. If the first input end of the indoor unit control unit 240 is at a low level, or when the second sending unit 220 sends a wake-up instruction multiple times and the first input end of the indoor unit control unit 240 is still at a low level, it is determined that the wake-up fails or the outdoor unit has a fault.

[0042] In an alternative embodiment, the indoor unit control unit 240 also controls the indoor unit to exit the wake-up state and enter the working state when the first input end of the indoor unit control unit 240 changes from a high level to a low level.

[0043] Specifically, when the first controllable switch unit 110 is turned on, the second receiving unit 230 is turned on, so the first input terminal of the indoor unit control unit 240 is at a high level; when the outdoor unit completes waking up, the first controllable switch unit 110 is turned off, the communication loop is disconnected, and the second receiving unit 230 is turned off, so the first input terminal of the indoor unit control unit 240 is at a low level. Therefore, when the first input terminal of the indoor unit control unit 240 changes from a high level to a low level, the outdoor unit completes waking up, so the indoor unit is controlled to exit the waking-up state so that the indoor unit enters the working state.

[0044] In the above embodiment, a first controllable switch unit is added to the communication loop between the indoor unit control circuit and the outdoor unit control circuit. When the indoor unit control circuit needs to control the outdoor unit to power on, by sending a wake-up instruction, the first controllable switch unit on the communication loop is turned on, and the first controllable switch unit provides power to the first charging unit, and the first charging unit supplies power to the outdoor unit control unit, thereby realizing power-on and wake-up of the outdoor unit. After the outdoor unit wakes up, by controlling the second controllable switch unit, the first controllable switch unit is disconnected from the communication loop, which will not affect the normal communication of the outdoor unit. Therefore, the indoor unit control circuit does not need to set a relay anymore, thereby reducing the volume of the indoor unit's electronic control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0045] In some embodiments, as Figure 3 and Figure 4 shown, the second controllable switch unit 120 includes: a first relay K1 and a driving module 121. Among them, the first end 1 of the first relay K1 is adapted to be connected to a power supply, the second end 2 of the first relay K1 is left floating, the third end 3 of the first relay K1 is connected to the input end of the first charging unit 130, the fourth end 4 of the first relay K1 is connected to the second control end of the first controllable switch unit 110, the fifth end 5 of the first relay K1 is left floating, and the sixth end 6 of the first relay K1 is adapted to be connected to the indoor unit. Among them, the second end 2 and the third end 3 of the first relay K1 are normally closed contacts, and the fourth end 4 and the sixth end 6 of the first relay K1 are normally closed contacts; the input end of the driving module 121 is connected to the first output end of the outdoor unit control unit 140, and the output end of the driving module 121 is connected to the coil of the first relay K1. The driving module 121 is configured to drive the first end 1 and the third end 3 of the first relay K1 to attract and the fifth end 5 and the sixth end 6 of the first relay K1 to attract according to the control signal sent by the outdoor unit control unit 140.

[0046] Specifically, the first end 1 of the first relay K1 is connected to the live wire L. Since the second end 2 and the third end 3 of the first relay K1 are normally closed contacts, when the outdoor unit is just powered on, the second end 2 and the third end 3 of the first relay K1 are attracted and closed, the first end 1 and the third end 3 of the first relay K1 are not attracted and closed, and the second controllable switch unit 120 does not supply power to the first charging unit 130. The sixth end 6 of the first relay K1 is connected to the communication line S. Since the fourth end 4 and the sixth end 6 of the first relay K1 are normally closed contacts, when the outdoor unit is just powered on, the fourth end 4 and the sixth end 6 of the first relay K1 are attracted and closed, and the current flows in from the fourth end 4 of the first relay K1 and flows out from the sixth end 6 of the first relay K1, and then flows into the communication line S, thus forming a communication loop. The output end of the driving module 121 is connected to the coil of the first relay K1, and the other end of the coil of the first relay K1 is adapted to input a preset power supply. When the outdoor unit control unit 140 completes the wake-up of the outdoor unit, the outdoor unit control unit 140 sends a control signal to the driving module 121, and the driving module 121 drives the first end 1 and the third end 3 of the first relay K1 to be attracted and closed and the fifth end 5 and the sixth end 6 of the first relay K1 to be attracted and closed according to the control signal sent by the outdoor unit control unit 140. At this time, the power supply flows in from the first end 1 of the first relay K1, and then flows into the first charging unit 130 through the third end 3 of the first relay K1 to supply power to the first charging unit 130. After the fifth end 5 and the sixth end 6 of the first relay K1 are attracted and closed, the fourth end 4 and the sixth end 6 of the first relay K1 are disconnected, and signal transmission to the indoor unit cannot be performed. Therefore, the first relay K1 cannot form a communication loop with the first controllable switch unit 110 and the indoor unit.

[0047] In the above embodiment, by controlling the attraction states of different contacts of the first relay, the working state of the second controllable switch unit is realized, so that it is possible to control whether the first controllable switch unit is disconnected from the communication loop.

[0048] In some embodiments, as Figure 3 and Figure 4 shown, the outdoor unit control circuit 100 further includes: a voltage detection unit 150. The input end of the voltage detection unit 150 is connected to the output end of the first charging unit 130, and the output end of the voltage detection unit 150 is connected to the first input end of the outdoor unit control unit 140. The voltage detection unit 150 is configured to perform voltage detection on the output voltage of the first charging unit 130 to obtain a voltage detection value, and send the voltage detection value to the outdoor unit control unit 140, so that the outdoor unit control unit 140 determines that the outdoor unit has completed wake-up when the voltage detection value is greater than a preset voltage threshold.

[0049] It can be understood that when the voltage detection value is greater than the preset voltage threshold, it indicates that the outdoor unit has completed waking up, and it is necessary to disconnect the first controllable switch unit 110 from the communication loop. Therefore, the first end 1 and the third end 3 of the first relay K1 are attracted, and the fifth end 5 and the sixth end 6 of the first relay K1 are attracted, so that the second controllable switch unit 120 supplies power to the first charging unit 130 and stops signal transmission with the indoor unit, thereby disconnecting the first controllable switch unit 110 from the communication loop.

[0050] In some embodiments, such as Figures 3 to 5 As shown, the outdoor unit control circuit 100 further includes: a first receiving unit 160. The input end of the first receiving unit 160 is adapted to receive a wake-up instruction, and the output end of the first receiving unit 160 is connected to the first control end of the first controllable switch unit 110. The first receiving unit 160 is configured to provide the wake-up instruction to the first controllable switch unit 110.

[0051] Specifically, the first controllable switch unit 110 can also receive the wake-up instruction sent by the outdoor unit through the first receiving unit 160. At this time, the second sending unit 220, the first receiving unit 160, the first controllable switch unit 110, the second controllable switch unit 120, and the second receiving unit 230 form a communication loop.

[0052] In some embodiments, such as Figures 3 to 5 As shown, the first receiving unit 160 includes: a first resistor R1, a first optocoupler IC1, a second resistor R2, and a third resistor R3. One end of the first resistor R1 is adapted to be connected to the indoor unit, and the other end of the first resistor R1 is connected to the first control end of the first controllable switch unit 110; the anode of the light-emitting part of the first optocoupler IC1 is connected to one end of the first resistor R1, and the cathode of the light-emitting part of the first optocoupler IC1 is connected to the other end of the first resistor R1. One end of the light-receiving part of the first optocoupler IC1 is adapted to input a preset power supply; one end of the second resistor R2 is connected to the other end of the light-receiving part of the first optocoupler IC1, and the other end of the second resistor R2 is grounded; one end of the third resistor R3 is connected to one end of the second resistor R2, and the other end of the third resistor R3 is connected to the second input end of the outdoor unit control unit 140.

[0053] That is to say, when the light-emitting part of the first optocoupler IC1 receives the wake-up instruction, the first optocoupler IC1 is turned on to provide a current signal to the first controllable switch unit 110; and, when the first optocoupler IC1 is turned on, the input end of the outdoor unit control unit 140 is at a high level, and the outdoor unit control unit 140 can receive the control instruction sent by the indoor unit according to the second input end of the outdoor unit control unit 140.

[0054] In some embodiments, such asFigures 3 to 5 As shown, the outdoor unit control circuit 100 further includes: a first transmission unit 170, an input end of the first transmission unit 170 is connected to an output end of the first reception unit 160, and an output end of the first transmission unit 170 is adapted to be connected to an indoor unit; a second output end of the outdoor unit control unit 140 is connected to a control end of the first transmission unit 170, and the outdoor unit control unit 140 is further configured to control the first transmission unit 170 to perform signal transmission with the indoor unit when controlling the second controllable switch unit 120 to supply power to the first charging unit 130 and lasting for a first preset duration, so that the outdoor unit enters a communication state.

[0055] Specifically, when the second controllable switch unit 120 stops transmitting signals to the indoor unit, the communication loop is disconnected. In order to enable the indoor unit and the outdoor unit to enter a normal communication state, the first transmission unit 170 is controlled to transmit signals to the indoor unit with a delay of the first preset duration. In this way, the second transmission unit 220, the neutral line N, the first reception unit 160, the first transmission unit 170, the communication line S, and the second reception unit 230 form a communication loop, so that the indoor unit and the outdoor unit can communicate normally, and the indoor unit and the outdoor unit enter a normal working state.

[0056] In the above embodiment, when the first controllable switch unit disconnects from the communication loop, the first transmission unit is controlled to transmit signals to the indoor unit, forming a new communication loop, so that the indoor unit and the outdoor unit can communicate normally.

[0057] In some embodiments, as Figures 3 to 5 shown, the first transmission unit 170 includes: a first triode Q1, a fifth resistor R5, a sixth resistor R6, and a second optocoupler IC2. Among them, a control end of the first triode Q1 is connected to the outdoor unit control unit 140 through a fourth resistor R4, and an emitter of the first triode Q1 is grounded; one end of the fifth resistor R5 is connected to a collector of the first triode Q1; one end of the sixth resistor R6 is adapted to be connected to a preset power supply, and the other end of the sixth resistor R6 is connected to the other end of the fifth resistor R5; an anode of a light-emitting part of the second optocoupler IC2 is connected to one end of the fifth resistor R5, a cathode of the light-emitting part of the second optocoupler IC2 is connected to the other end of the fifth resistor R5, one end of a light-receiving part of the second optocoupler IC2 is connected to an output end of the first reception unit 160, and the other end of the light-receiving part of the second optocoupler IC2 is adapted to be connected to the outdoor unit.

[0058] Specifically, the outdoor unit control unit 140 controls the first triode Q1 to turn on. After the first triode Q1 turns on, the cathode of the light-emitting part of the first optocoupler IC1 is pulled to a low level, so the second optocoupler IC2 turns on. The current generated by the regulated power supply 221 in the second transmission unit 220 flows from the first reception unit 160 through the light-receiving part of the first optocoupler IC1 and then flows into the second reception unit 230.

[0059] In an alternative embodiment, to prevent excessive current in the communication loop from damaging the components on the communication loop, the outdoor unit control circuit 100 further includes a sixteenth resistor and a second diode D2. One end of the sixteenth resistor is connected to the output terminals of the second controllable switch unit 120 and the first transmission unit 170 respectively, the other end of the sixteenth resistor is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the communication line S. The sixteenth resistor can limit the current output by the second controllable switch unit 120 or the first transmission unit 170, and the second diode D2 can prevent reverse voltage shock.

[0060] In some embodiments, the first reception unit 160 is further adapted to receive a shutdown instruction sent by the indoor unit. The first reception unit 160 is further connected to the first input terminal of the outdoor unit control unit 140, and the first reception unit 160 is further configured to send the shutdown instruction to the outdoor unit control unit 140, so that the outdoor unit control unit 140 controls the second controllable switch unit 120 to stop supplying power to the first charging unit 130 when the outdoor unit enters the communication state and receives the shutdown instruction.

[0061] Specifically, after the outdoor unit enters the communication state, the outdoor unit communicates through the communication loop formed by the second transmission unit 220, the first reception unit 160, the first transmission unit 170, and the second reception unit 230. When the air conditioner needs to be shut down, the indoor unit control unit 240 sends the shutdown instruction to the first reception unit 160 through the second transmission unit 220, and the first reception unit 160 sends the shutdown instruction to the outdoor unit control unit 140. The outdoor unit control unit 140 stops outputting the control signal, the second controllable switch unit 120 stops supplying power to the first charging unit 130, and the outdoor unit is powered off.

[0062] In an alternative embodiment, when the indoor unit control unit 240 receives the shutdown instruction, it controls the second triode Q2 to turn off, so that the second transmission unit 220 stops outputting current.

[0063] In the above embodiments, after the outdoor unit enters the communication state, the second controllable switch unit supplies power to the first charging unit. Therefore, when receiving the shutdown instruction, controlling the second controllable switch unit to stop supplying power to the first charging unit can control the outdoor unit to power off, thus achieving low-power standby.

[0064] In some embodiments, such as Figures 3 to 5 shown, the first controllable switch unit 110 includes a solid-state relay K2.

[0065] It should be noted that the first controllable switch unit 110 is not limited to using the solid-state relay K2, and a low-coil-power consumption relay can also be used to further reduce the power consumption of the outdoor unit.

[0066] Furthermore, the first controllable switch unit 110 further includes a seventeenth resistor R17. One end of the seventeenth resistor R17 is connected to the second control end of the solid-state relay K2, and the other end of the seventeenth resistor R17 is connected to the input end of the second controllable switch unit 120 to limit the current output from the second control end of the solid-state relay K2.

[0067] In some embodiments, such as Figures 3 to 5 shown, the first charging unit 130 includes: a first rectification module 131 and a first electrolytic capacitor E1. Among them, the first end of the first rectification module 131 is adapted to be connected to the neutral line N, the second end of the first rectification module 131 is respectively connected to the output end of the first controllable switch unit 110 and the second output end of the second controllable switch unit 120; one end of the first electrolytic capacitor E1 is respectively connected to the third end of the first rectification module 131 and the power supply end of the outdoor unit control unit 140, and the other end of the first electrolytic capacitor E1 is respectively connected to the fourth end of the first rectification module 131 and the output end of the outdoor unit control unit 140.

[0068] Specifically, the first rectification module 131 rectifies the power supply to generate direct current to charge the first electrolytic capacitor E1, and the voltage detection value is the voltage across the first electrolytic capacitor E1.

[0069] Optionally, the first rectification module 131 includes four diodes D3 - D7. The anode of the third diode D3 is connected to the neutral line N, the cathode of the third diode D3 is respectively connected to the cathode of the fourth diode D4 and one end of the first electrolytic capacitor E1, the anode of the fourth diode D4 is connected to the output end of the first controllable switch unit 110 through a second thermistor, the cathode of the fifth diode D5 is connected to the anode of the third diode D3, the anode of the fifth diode D5 is connected to the anode of the sixth diode D6, and the cathode of the sixth diode D6 is connected to the anode of the fourth diode D4. The voltage detection unit 150 includes an eighteenth resistor R18 and a nineteenth resistor R19. One end of the eighteenth resistor R18 is connected to one end of the first electrolytic capacitor E1, the other end of the eighteenth resistor R18 is respectively connected to one end of the nineteenth resistor R19 and the second input end of the outdoor unit control unit 140, and the other end of the nineteenth resistor R19 is connected to the other end of the first electrolytic capacitor E1.

[0070] It should be noted that the second charging unit 210 can adopt the same circuit topology as the first charging unit 130. Further, in order to avoid excessive current in the live wire L and cause damage to the first charging unit 130 and the second charging unit 210, the outdoor unit control circuit 100 is also provided with a first fuse. One end of the first fuse is connected to the live wire L, and the other end of the first fuse is respectively connected to the input end of the first controllable switch unit 110 and the second input end of the second controllable switch unit 120. The indoor unit control circuit 200 is also provided with a second fuse. One end of the second fuse is connected to the live wire L, and the other end of the second fuse is connected to the second charging unit 210.

[0071] In summary, according to the outdoor unit control circuit of the embodiment of the present invention, when the outdoor unit needs to be powered on, the indoor unit sends a wake-up command to the first receiving unit. The first receiving unit, the first controllable switch unit, and the second controllable switch unit form a communication loop with the indoor unit, so that the first controllable switch unit is turned on. After the first controllable switch unit is turned on, it provides power to the first charging unit. The first charging unit generates a first power supply according to the power to supply power to the outdoor unit control unit, thereby waking up the outdoor unit. After the outdoor unit is successfully woken up, the second controllable switch unit is controlled to supply power to the first charging unit, so that the first controllable switch unit is cut off from the communication loop and does not affect the normal communication of the outdoor unit. Therefore, the indoor unit only needs to send a wake-up command from the first receiving unit to power on and wake up the outdoor unit, and there is no need to set a relay in the indoor unit to control the power on or off of the outdoor unit, thereby reducing the volume of the indoor unit's electronic control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0072] Corresponding to the above embodiment, the embodiment of the present invention also provides an outdoor unit. As Figure 6 shown, the outdoor unit 300 includes: the outdoor unit control circuit 100 of any one of the foregoing embodiments.

[0073] According to the outdoor unit of the embodiment of the present invention, by adopting the above-mentioned outdoor unit control circuit, the first controllable switch unit is arranged in the communication loop between the indoor unit and the outdoor unit. The communication loop is used to turn on the first controllable switch unit to supply power to the outdoor unit. And after the outdoor unit is successfully woken up, the first controllable switch unit is cut off from the communication loop, which does not affect the normal communication of the outdoor unit. In this way, the relay on the indoor unit side can be cancelled, thereby reducing the volume of the indoor unit's electronic control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0074] Corresponding to the above embodiment, the embodiment of the present invention also provides an air conditioner. As Figure 7As shown, the air conditioner 1000 includes: an indoor unit 400 and the aforementioned outdoor unit 300. Among them, the indoor unit 400 is adapted to send a wake-up instruction; the outdoor unit 300 is connected to the indoor unit 400, and the outdoor unit 300 is configured to be woken up when receiving the wake-up instruction.

[0075] For the air conditioner according to the embodiment of the present invention, by adopting the above-mentioned outdoor unit, the first controllable switch unit is arranged in the communication loop between the indoor unit and the outdoor unit. The communication loop is used to turn on the first controllable switch unit to supply power to the outdoor unit. And after the outdoor unit is successfully woken up, the first controllable switch unit is cut off from the communication loop, which will not affect the normal communication of the outdoor unit. In this way, the relay on the indoor unit side can be cancelled, thereby reducing the volume of the indoor unit's electronic control, and further reducing the volume of the indoor unit. Moreover, no large current passes through the indoor unit control circuit, thereby improving the safety of the indoor unit.

[0076] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0077] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0078] In addition, the terms "first", "second", etc. used in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated in this embodiment. Thus, the features defined with terms such as "first", "second", etc. in the embodiments of the present invention can explicitly or implicitly indicate that at least one such feature is included in this embodiment. In the description of the present invention, the meaning of the word "plural" is at least two or more than two, such as two, three, four, etc., unless otherwise specifically defined in the embodiment.

[0079] In the present utility model, unless otherwise clearly defined or limited in the embodiments, terms such as "installation", "connection", "attachment" and "fixation" appearing in the embodiments shall be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral one. It can be understood that it may also be a mechanical connection, an electrical connection, etc. Of course, it may also be a direct connection, or an indirect connection through an intermediate medium, or it may be the communication inside two components, or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific implementation situations.

[0080] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. An outdoor unit control circuit, characterized in that: include: a first controllable switch unit, wherein a first control end of the first controllable switch unit is adapted to receive a wake-up instruction sent by the indoor unit, and an input end of the first controllable switch unit is adapted to be connected to a power supply; a second controllable switch unit, wherein a first input end of the second controllable switch unit is connected to a second control end of the first controllable switch unit, a first output end of the second controllable switch unit is suitable for connecting to the indoor unit, a second input end of the second controllable switch unit is suitable for connecting to the power supply, and the second controllable switch unit is configured to establish a communication loop with the first controllable switch unit and the indoor unit when the first controllable switch unit receives the wake-up instruction, so as to turn on the first controllable switch unit; A first charging unit and an outdoor unit control unit, wherein the input end of the first charging unit is respectively connected to the output end of the first controllable switch unit and the second output end of the second controllable switch unit, the output end of the first charging unit is connected to the power supply end of the outdoor unit control unit, the first charging unit is configured to supply power to the outdoor unit control unit according to the power provided by the first controllable switch unit to wake up the outdoor unit, and the outdoor unit control unit is further configured to control the second controllable switch unit to provide the power to the first charging unit when the outdoor unit completes the wake-up, wherein the second controllable switch unit stops signal transmission with the indoor unit when providing the power to the first charging unit.

2. The outdoor unit control circuit according to claim 1, characterized in that: The second controllable switch unit comprises: a first relay, wherein a first end of the first relay is suitable for connecting to the power supply, a second end of the first relay is suspended, a third end of the first relay is connected to an input end of the first charging unit, a fourth end of the first relay is connected to a second control end of the first controllable switch unit, a fifth end of the first relay is suspended, and a sixth end of the first relay is suitable for connecting to an indoor unit, wherein the second end and the third end of the first relay are normally closed contacts, and the fourth end and the sixth end of the first relay are normally closed contacts; A driving module, wherein the input end of the driving module is connected to the first output end of the outdoor unit control unit, the output end of the driving module is connected to the coil of the first relay, and the driving module is configured to drive the first end and the third end of the first relay to be attracted and the fifth end and the sixth end of the first relay to be attracted according to a control signal sent by the outdoor unit control unit.

3. The outdoor unit control circuit according to claim 1, characterized in that: Also includes: A voltage detection unit, wherein the input end of the voltage detection unit is connected to the output end of the first charging unit, and the output end of the voltage detection unit is connected to the first input end of the outdoor unit control unit. The voltage detection unit is configured to perform voltage detection on the output voltage of the first charging unit to obtain a voltage detection value, and send the voltage detection value to the outdoor unit control unit, so that the outdoor unit control unit determines that the outdoor unit has completed wake-up when the voltage detection value is greater than a preset voltage threshold.

4. The outdoor unit control circuit according to any one of claims 1 to 3, characterized in that: Also includes: A first receiving unit, wherein the input end of the first receiving unit is suitable for receiving the wake-up instruction, the output end of the first receiving unit is connected to the first control end of the first controllable switch unit, and the first receiving unit is configured to provide the wake-up instruction to the first controllable switch unit.

5. The outdoor unit control circuit according to claim 4, characterized in that: The first receiving unit comprises: a first resistor, one end of which is suitable for connecting to the indoor unit, and the other end of which is connected to the first control end of the first controllable switch unit; A first photocoupler, wherein an anode of a light-emitting portion of the first photocoupler is connected to one end of the first resistor, a cathode of the light-emitting portion of the first photocoupler is connected to the other end of the first resistor, and one end of a light-receiving portion of the first photocoupler is suitable for inputting a preset power supply; a second resistor, one end of the second resistor being connected to the other end of the light receiving portion of the first photocoupler, and the other end of the second resistor being grounded; A third resistor, one end of the third resistor is connected to one end of the second resistor, and the other end of the third resistor is connected to the second input end of the outdoor unit control unit.

6. The outdoor unit control circuit according to claim 4, characterized in that: Also includes: a first sending unit, wherein an input end of the first sending unit is connected to an output end of the first receiving unit, and the output end of the first sending unit is suitable for connecting to the indoor unit; The second output end of the outdoor unit control unit is connected to the control end of the first sending unit. The outdoor unit control unit is also configured to control the first sending unit to transmit signals with the indoor unit while controlling the second controllable switch unit to provide the power to the first charging unit for a first preset time period, so that the outdoor unit enters a communication state.

7. The outdoor unit control circuit according to claim 6, characterized in that: The first sending unit includes: A first transistor, wherein a control end of the first transistor is connected to the outdoor unit control unit via a fourth resistor, and an emitter of the first transistor is grounded; a fifth resistor, one end of which is connected to the collector of the first transistor; a sixth resistor, one end of which is suitable for connecting to a preset power supply, and the other end of which is connected to the other end of the fifth resistor; A second photoelectric coupler, wherein an anode of the light-emitting portion of the second photoelectric coupler is connected to one end of the fifth resistor, a cathode of the light-emitting portion of the second photoelectric coupler is connected to the other end of the fifth resistor, one end of the light-receiving portion of the second photoelectric coupler is connected to the output end of the first receiving unit, and the other end of the light-receiving portion of the second photoelectric coupler is suitable for connecting to the outdoor unit.

8. The outdoor unit control circuit according to claim 6, characterized in that: The first receiving unit is also suitable for receiving a shutdown command sent by the indoor unit. The first receiving unit is also connected to the first input end of the outdoor unit control unit. The first receiving unit is also configured to send the shutdown command to the outdoor unit control unit so that the outdoor unit control unit controls the second controllable switch unit to stop providing the power to the first charging unit when the outdoor unit enters a communication state and receives the shutdown command.

9. The outdoor unit control circuit according to claim 1, characterized in that: The first controllable switch unit includes a solid-state relay.

10. The outdoor unit control circuit according to claim 1, characterized in that: The first charging unit comprises: A first rectifier module, wherein a first end of the first rectifier module is suitable for connecting to a neutral line, and a second end of the first rectifier module is respectively connected to an output end of the first controllable switch unit and a second output end of the second controllable switch unit; A first electrolytic capacitor, one end of the first electrolytic capacitor is respectively connected to the third end of the first rectifier module and the power supply end of the outdoor unit control unit, and the other end of the first electrolytic capacitor is respectively connected to the fourth end of the first rectifier module and the output end of the outdoor unit control unit.

11. An outdoor unit, characterized in that: include: An outdoor unit control circuit according to any one of claims 1 to 10.

12. An air conditioner, characterized in that: include: Indoor unit, the indoor unit is suitable for sending a wake-up command ； The outdoor unit according to claim 11, wherein the outdoor unit is connected to the indoor unit, and the outdoor unit is configured to wake up upon receiving the wake-up instruction.

Images