An air conditioner control circuit

Abstract

This application relates to an air conditioner control circuit. The circuit includes: an external communication module, an indoor unit microcontroller unit, an indoor unit communication module, an outdoor unit communication module, and an outdoor unit microcontroller unit. The air conditioner control circuit also includes a power consumption control module. The external communication module is connected to the indoor unit microcontroller unit, the indoor unit microcontroller unit is connected to the indoor unit communication module, the indoor unit communication module is connected to the outdoor unit communication module, and the outdoor unit communication module is connected to the outdoor unit microcontroller unit. The power consumption control module is connected to both the indoor and outdoor unit microcontroller units, and is also connected to the communication lines between the indoor and outdoor unit communication modules. Through the power consumption control module, this application enables an air conditioner with an outdoor unit connected to an indoor unit to be woken up even when the outdoor unit is completely powered off after entering ultra-low power standby mode, solving the technical problem that outdoor unit connected air conditioners cannot meet the requirements of ultra-low power standby.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an air conditioning control circuit. Background Technology

[0002] Existing air conditioners using a hybrid photovoltaic and energy storage power supply system connect the outdoor unit to AC mains power, photovoltaic DC power, and battery DC power, which in turn supplies DC power to the indoor unit. In standby mode, the indoor unit requires remote control input to restart, necessitating the operation of the remote control receiver module. Therefore, both the indoor and outdoor unit power supplies must operate simultaneously. However, this results in high standby power consumption, failing to meet the requirements for ultra-low power standby.

[0003] Currently, related technologies aim to reduce standby power consumption by reducing the number of indoor unit control modules and cutting off the outdoor unit power supply during standby. However, this solution is only for air conditioners with an indoor-mounted, outdoor-powered configuration and cannot address the issue that air conditioners with an outdoor-mounted, indoor-powered configuration cannot meet the requirements for ultra-low power standby.

[0004] There is currently no effective solution to the problem that outdoor air conditioners cannot meet the requirements for ultra-low power standby. Summary of the Invention

[0005] This application provides an air conditioning control circuit to solve the technical problem that an external-extended internal air conditioner cannot meet the requirements for ultra-low power standby.

[0006] According to one aspect of an embodiment of this application, an air conditioning control circuit is provided, comprising: an external communication module, an indoor unit microcontroller unit, an indoor unit communication module, an outdoor unit communication module, and an outdoor unit microcontroller unit. The air conditioning control circuit further comprises a power consumption control module, wherein: the external communication module is connected to the indoor unit microcontroller unit, the indoor unit microcontroller unit is connected to the indoor unit communication module, the indoor unit communication module is connected to the outdoor unit communication module, the outdoor unit communication module is connected to the outdoor unit microcontroller unit, the power consumption control module is connected to the indoor unit microcontroller unit and the outdoor unit microcontroller unit respectively, and is also connected to a communication line between the indoor unit communication module and the outdoor unit communication module; the external communication module is used to receive external switch signals, the indoor unit microcontroller unit is used to control the indoor unit communication module to transmit the switch signals to the outdoor unit communication module, and is also used to control the power consumption control module to cause the indoor unit to enter or exit a low-power standby mode according to the switch signals, and the outdoor unit microcontroller unit is used to receive the switch signals transmitted by the external communication module, and to control the power consumption control module to cause the outdoor unit to enter or exit a low-power standby mode according to the switch signals.

[0007] Optionally, the power consumption control module includes: a first power control switch module, a normally open relay, a normally closed relay, a first diode, and a second diode, wherein: the first power control switch module is connected to the outdoor unit microcontroller unit; one end of the normally open relay is connected to the outdoor unit switching power supply, and the other end is connected to both the first power control switch module and the normally closed relay; one end of the normally closed relay is connected to both the first power control switch module and the normally open relay, and the other end is connected to the communication line between the indoor unit communication module and the outdoor unit communication module; the first diode and the second diode are disposed between the normally open relay and the normally closed relay, and are connected in parallel with opposite directions; the first power control switch module is used to control the switching states of the normally open relay and the normally closed relay; the outdoor unit switching power supply is the mainboard power supply of the outdoor unit; the normally open relay is in an open state when power is off, and the normally closed relay is in a closed state when power is off; the first diode and the second diode are used to prevent reverse connection and prevent circulating current.

[0008] Optionally, the power consumption control module further includes a second power control switch module, wherein the second power control switch module is connected to the indoor unit microcontroller unit, the indoor unit switching power supply, and multiple loads of the indoor unit respectively; the second power control switch module is used to cut off or connect the current path of the indoor unit switching power supply to the multiple loads according to the control signal of the indoor unit microcontroller unit.

[0009] Optionally, when the external communication module receives a shutdown signal, the indoor unit microcontroller unit is used to control the indoor unit communication module to transmit the shutdown signal to the outdoor unit communication module, and is also used to send a standby command to the second power control switch module. The second power control switch module is used to cut off the current path of the indoor unit switching power supply to the multiple loads according to the standby command. The outdoor unit microcontroller unit is used to send a shutdown command to the first power control switch module according to the shutdown signal. The first power control switch module is used to control the normally open relay to open and the normally closed relay to close according to the shutdown command to turn off the outdoor unit switching power supply.

[0010] Optionally, when the external communication module receives a power-on signal, the indoor unit microcontroller unit is used to send a power-on command to the indoor unit communication module and the second power control switch module. The second power control switch module is used to conduct the current path of the indoor unit switching power supply to the multiple loads according to the power-on command. The indoor unit communication module is also used to reuse the communication line with the outdoor unit communication module, and transmit the electrical signal to the normally open relay through the communication line and the normally closed relay in the closed state to supply power to the normally open relay, so that the normally open relay is energized and closed to start the outdoor unit switching power supply.

[0011] Optionally, after the outdoor unit power supply is started and the outdoor unit microcontroller is turned on, the outdoor unit microcontroller is used to send a power-on command to the first power control switch module. The first power control switch module is used to supply power to the normally open relay and the normally closed relay according to the power-on command, so as to control the normally open relay to continue to close and control the normally closed relay to open.

[0012] Optionally, when the external communication module receives a shutdown signal, the indoor unit microcontroller unit is also used to start a timer. If no new signal is received within a preset time period, the indoor unit communication module is controlled to transmit the shutdown signal to the external unit communication module and send a standby command to the second power control switch module.

[0013] Optionally, the circuit further includes an energy storage battery, which is charged via an outdoor unit switching power supply.

[0014] Optionally, when the external communication module receives a power-off signal and the current time is in the first time period, the indoor unit microcontroller unit is used to control the power consumption control module to put the indoor unit into a normal standby mode, and the outdoor unit microcontroller unit is used to control the power consumption control module to put the outdoor unit into the normal standby mode. In the normal standby mode, both the indoor and outdoor units keep the power supply on, shut down the load, and enable the photovoltaic input connected to the outdoor unit to charge the energy storage battery.

[0015] Optionally, when the external communication module receives a power-off signal and the current time is in the second time period, the indoor unit microcontroller unit is used to control the power consumption control module to put the indoor unit into a low-power standby mode, and the outdoor unit microcontroller unit is used to control the power consumption control module to put the outdoor unit into the low-power standby mode. In the low-power standby mode, the indoor unit keeps the power supply on and shuts down the load, while the outdoor unit shuts down the power supply.

[0016] Compared with related technologies, the technical solutions provided in this application have the following advantages:

[0017] This application provides an air conditioner control circuit, including: an external communication module, an indoor unit microcontroller unit, an indoor unit communication module, an outdoor unit communication module, and an outdoor unit microcontroller unit. The air conditioner control circuit also includes a power consumption control module, wherein: the external communication module is connected to the indoor unit microcontroller unit, the indoor unit microcontroller unit is connected to the indoor unit communication module, the indoor unit communication module is connected to the outdoor unit communication module, the outdoor unit communication module is connected to the outdoor unit microcontroller unit, the power consumption control module is connected to both the indoor unit microcontroller unit and the outdoor unit microcontroller unit, and is also connected to a communication line between the indoor unit communication module and the outdoor unit communication module; the external communication module is used to receive external switch signals, the indoor unit microcontroller unit is used to control the indoor unit communication module to transmit the switch signals to the outdoor unit communication module, and is also used to control the power consumption control module to put the indoor unit into or out of a low-power standby mode according to the switch signals, and the outdoor unit microcontroller unit is used to receive the switch signals transmitted by the external communication module, and to control the power consumption control module to put the outdoor unit into or out of a low-power standby mode according to the switch signals. This application, through the setting of the power consumption control module, enables the outdoor unit of an air conditioner with an external detachment and internal power supply to be woken up when the power is completely cut off after entering the ultra-low power standby mode, thus solving the technical problem that the air conditioner with an external detachment and internal power supply cannot meet the requirements of ultra-low power standby. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0020] Figure 1 This is a block diagram of an optional air conditioning control circuit according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of an optional air conditioning control circuit according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of an optional power control switch module provided according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of an optional power control switch module provided according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of an optional power control switch module provided according to an embodiment of this application;

[0025] Reference numerals in the attached diagram: 1. External communication module; 2. Indoor unit microcontroller unit; 3. Indoor unit communication module; 4. Outdoor unit communication module; 5. Outdoor unit microcontroller unit; 6. Power consumption control module; 601. First power control switch module; K-1. Normally open relay; K-2. Normally closed relay; D-1. First diode; D-2. Second diode; 606. Third power control switch module; 7. Outdoor unit switching power supply; 8. Indoor unit switching power supply. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustration and has no specific meaning in itself. Therefore, "module" and "part" may be used interchangeably.

[0028] To address the problems mentioned in the background art, according to one aspect of an embodiment of this application, an embodiment of an air conditioning control circuit is provided. For example... Figure 1 As shown, the air conditioner control circuit includes: an external communication module 1, an indoor unit microcontroller unit 2, an indoor unit communication module 3, an outdoor unit communication module 4, and an outdoor unit microcontroller unit 5. The air conditioner control circuit also includes a power consumption control module 6, wherein:

[0029] The external communication module 1 is connected to the indoor unit microcontroller unit 2, the indoor unit microcontroller unit 2 is connected to the indoor unit communication module 3, the indoor unit communication module 3 is connected to the outdoor unit communication module 4, the outdoor unit communication module 4 is connected to the outdoor unit microcontroller unit 5, and the power consumption control module 6 is connected to the indoor unit microcontroller unit 2 and the outdoor unit microcontroller unit 5 respectively, and is also connected to the communication line between the indoor unit communication module 3 and the outdoor unit communication module 4;

[0030] The external communication module 1 is used to receive external switch signals. The indoor unit microcontroller unit 2 is used to control the indoor unit communication module 3 to transmit the switch signals to the outdoor unit communication module 4. It is also used to control the power consumption control module 6 to make the indoor unit enter or exit the low-power standby mode according to the switch signals. The outdoor unit microcontroller unit 5 is used to receive the switch signals transmitted by the external communication module 4 and control the power consumption control module 6 to make the outdoor unit enter or exit the low-power standby mode according to the switch signals.

[0031] In this embodiment of the application, in order to meet the user's ultra-low power standby requirements, the application enables the indoor unit to shut down unnecessary low-voltage load power supplies through the setting of the power control module, so that only the external communication module and the indoor unit microcontroller unit work, thereby minimizing the power consumption of the indoor unit, completely de-energizing the outdoor unit, and enabling it to be re-energized, thereby realizing the ultra-low power standby mode of the air conditioner with external traction and internal power supply, and meeting the user's needs.

[0032] In this embodiment of the application, in the ultra-low power standby mode, the operating power of the entire air conditioner can be controlled below 1W. At this time, the outdoor unit is completely turned off, the power supply of the indoor unit's low-voltage load is not working and is in a silent state, and the power consumption is generated only from the static power consumption of the indoor unit.

[0033] In this embodiment, the external communication module may specifically include a remote control receiver module, where the external switch signal is the remote control's power-on signal, power-off signal, etc. The indoor and outdoor communication modules can use RS-485 communication, and they are connected via RS-485 A and B lines.

[0034] In this embodiment of the application, the 485 communication can be a 2-wire system, namely, divided into differential signal lines A and B.

[0035] In this embodiment, the power consumption control module can reuse the A and B lines of the 485 communication to wake up the outdoor unit. The power consumption control module is described in detail below.

[0036] In an optional embodiment, such as Figure 2 As shown, the power consumption control module includes: a first power control switch module 601, a normally open relay K-1, a normally closed relay K-2, a first diode D-1, and a second diode D-2, wherein:

[0037] The first power control switch module 601 is connected to the outdoor unit microcontroller unit 5. One end of the normally open relay K-1 is connected to the outdoor unit switching power supply 7, and the other end is connected to the first power control switch module 601 and the normally closed relay K-2 respectively. One end of the normally closed relay K-2 is connected to the first power control switch module 601 and the normally open relay K-1 respectively, and the other end is connected to the communication line between the indoor unit communication module 3 and the outdoor unit communication module 4. The first diode D-1 and the second diode D-2 are disposed between the normally open relay K-1 and the normally closed relay K-2. The first diode D-1 and the second diode D-2 are connected in parallel and in opposite directions.

[0038] The first power control switch module 601 is used to control the switching state of the normally open relay K-1 and the normally closed relay K-2. The outdoor unit switching power supply 7 is the main board power supply of the outdoor unit. The normally open relay K-1 is in the open state when the power is off, and the normally closed relay K-2 is in the closed state when the power is off. The first diode D-1 and the second diode D-2 are used to prevent reverse connection and prevent circulating current.

[0039] In this embodiment, normally open and normally closed refer to the state of the relay switch when the relay electromagnetic coil is de-energized. When the relay control terminal of a normally open relay is de-energized, the relay electromagnetic coil is not magnetic and does not engage, thus the switch is open. When the relay control terminal is energized, the relay electromagnetic coil is magnetic and engages, thus the switch is closed. A normally closed relay behaves the opposite way.

[0040] In this embodiment, under normal circumstances, the first power control switch module 601 continuously supplies power to the normally open relay K-1 and the normally closed relay K-2, keeping the normally open relay K-1 continuously closed to ensure the outdoor unit power supply 7 operates normally and supplies power to the entire outdoor unit, while keeping the normally closed relay K-2 continuously open. When entering ultra-low power standby mode, the first power control switch module 601 cuts off the power supply to the normally open relay K-1 and the normally closed relay K-2, keeping the normally open relay K-1 continuously open to disconnect the outdoor unit power supply 7 from the mains input, completely shutting down the outdoor unit, while keeping the normally closed relay K-2 continuously closed to establish a signal path for waking up the outdoor unit. When exiting the ultra-low power standby mode, the control signal sent by the indoor unit can reach the normally open relay K-1 through the normally closed relay K-2, thereby energizing and closing the normally open relay K-1, which in turn connects the outdoor unit switching power supply 7 to the mains input, turns on the outdoor unit, and then starts the outdoor unit microcontroller unit 5 to start working. The outdoor unit communication module 4 establishes a connection with the indoor unit communication module 3 to complete the outdoor unit wake-up.

[0041] In an optional embodiment, such as Figure 2As shown, the power consumption control module 6 further includes a second power control switch module 606, wherein the second power control switch module 606 is connected to the indoor unit microcontroller unit 2, the indoor unit switching power supply 8, and multiple loads of the indoor unit respectively; the second power control switch module 606 is used to cut off or connect the current path of the indoor unit switching power supply 8 to supply power to the multiple loads according to the control signal of the indoor unit microcontroller unit 2.

[0042] In this embodiment of the application, under the control of the second power control switch module 606, the indoor unit can shut down unnecessary low-voltage loads when entering the ultra-low power standby mode, thereby minimizing the power consumption of the indoor unit.

[0043] In this embodiment of the application, the first power control switch module can be as follows: Figure 3 As shown, the second power control switch module illustrates optional embodiments for a +15V load power supply and a +12V load power supply, such as... Figure 4 , 5 As shown. A power control switch module is essentially a switch that can bidirectionally cut off power. Although a common relay can achieve this with good cutting effect and insulation, its size, cost, and power consumption are not optimal, and it produces noise during operation. The circuit structures of the three power control switch modules described above are all the same: the left side of the circuit is connected to a switching power supply, which outputs power to low-voltage loads such as VCC-2, +15V, and +12V; the right side of the circuit is connected to the corresponding low-voltage load, such as... Figure 3 Connect VCC-K-2 to the load that uses VCC-2 as its power source. Figure 4 The VCC-K-3 is connected to a load that uses +15V as its power supply. The circuit uses a transistor as a switch. When the transistor is turned on, the current path is open and the power supply provides power to the corresponding load. When the transistor is turned off, the current path is broken and the power supply stops.

[0044] The following explains how to enter ultra-low power standby mode.

[0045] In an optional embodiment, when the external communication module 1 receives a shutdown signal, the indoor unit microcontroller unit 2 is used to control the indoor unit communication module 3 to transmit the shutdown signal to the outdoor unit communication module 4, and is also used to send a standby command to the second power control switch module 606. The second power control switch module 606 is used to cut off the current path of the indoor unit switching power supply 8 to supply power to the multiple loads according to the standby command. The outdoor unit microcontroller unit 5 is used to send a shutdown command to the first power control switch module 601 according to the shutdown signal. The first power control switch module 601 is used to control the normally open relay K-1 to open and control the normally closed relay K-2 to close according to the shutdown command, so as to turn off the outdoor unit switching power supply 7.

[0046] In this embodiment, when entering the ultra-low power standby mode, all high-power loads such as fans, compressors, and electric heaters in both the indoor and outdoor units stop working. The outdoor unit, through the first power control switch module 601, cuts off the power supply to normally open relay K-1 and normally closed relay K-2, thereby cutting off the power supply to the outdoor unit switching power supply 7. At this time, the outdoor unit mainboard is de-energized, and normally closed relay K-2 is de-energized and closed. The indoor unit, through the second power control switch module 606, cuts off the power supply to unnecessary low-voltage loads, such as +12V and +15V, thereby establishing the ultra-low power standby mode.

[0047] In ultra-low power standby mode, the indoor unit's microcontroller unit 2 and the external communication module 1 continue to operate, thus enabling them to receive and process power-on commands sent by the remote control. The following explains how to wake up the outdoor unit when exiting ultra-low power standby mode.

[0048] In an optional embodiment, when the external communication module 1 receives a power-on signal, the indoor unit microcontroller unit 2 is used to send a power-on command to the indoor unit communication module 3 and the second power control switch module 606. The second power control switch module 606 is used to conduct the current path of the indoor unit switching power supply 8 to supply power to the multiple loads according to the power-on command. The indoor unit communication module 3 is also used to reuse the communication line with the outdoor unit communication module 4, and transmit an electrical signal to the normally open relay K-1 through the communication line and the normally closed relay K-2 in the closed state, so as to supply power to the normally open relay K-1, so that the normally open relay K-1 is energized and closed to start the outdoor unit switching power supply 7.

[0049] In this embodiment, when the power button is pressed on the remote control, the indoor unit supplies power to the corresponding load through the second power control switch module 606, and the 485 communication module is powered on and started. Since the communication lines between the indoor unit communication module 3 and the outdoor unit communication module 4, namely lines A and B, are energized, the normally closed relay K-2 is in a closed state, which energizes the normally open relay K-1, causing the switch to close. This energizes the outdoor unit power supply 7 and the outdoor unit microcontroller unit 5, allowing the outdoor unit communication module 4 to establish communication with the indoor unit communication module 3 and complete the outdoor unit restart.

[0050] In an optional embodiment, after the outdoor unit switching power supply 7 is started and the outdoor unit microcontroller unit 5 is turned on, the outdoor unit microcontroller unit 5 is used to send a power-on command to the first power control switch module 601. The first power control switch module 601 is used to supply power to the normally open relay K-1 and the normally closed relay K-2 according to the power-on command, so as to control the normally open relay K-1 to continue to close and control the normally closed relay K-2 to open.

[0051] In this embodiment, due to the long communication line, the VCC voltage is easily affected by interference when the compressor is working, leading to unstable power supply voltage. Furthermore, the long power supply loop can cause serious EMC (Electromagnetic Compatibility) problems. Therefore, the A and B lines of the multiplexed 485 communication cannot supply power to the normally open relay K-1 for an extended period. Thus, the normally closed relay K-2 must be disconnected after being woken up. Continuous power supply through the first power control switch module 601 ensures that the normally open relay K-1 remains closed, while the normally closed relay K-2 remains open.

[0052] In this embodiment of the application, after the outdoor unit is successfully restarted, the A and B lines of the 485 communication resume communication function.

[0053] In this embodiment, when communication is established normally, a negative voltage may appear on line AB. Therefore, the first diode D-1 and the second diode D-2 serve to prevent reverse polarity and circulating current.

[0054] In an optional embodiment, when the external communication module 1 receives a shutdown signal, the indoor unit microcontroller unit 2 is also used to start a timer. If no new signal is received within a preset time period, the indoor unit communication module 3 is controlled to transmit the shutdown signal to the external unit communication module 4 and send a standby command to the second power control switch module 606.

[0055] In this embodiment of the application, in order to prevent the user from repeatedly turning the computer on and off or accidentally turning it off in a short period of time, when the indoor unit receives the shutdown signal, it can wait for a time T before executing the shutdown command. If a new signal is received during this period, the operation will be interrupted.

[0056] In an optional embodiment, the circuit further includes an energy storage battery that is charged via an outdoor unit switching power supply 7.

[0057] In an optional embodiment, when the external communication module 1 receives a power-off signal and the current time is in the first time period, the indoor unit microcontroller 2 is used to control the power consumption control module 6 to put the indoor unit into a normal standby mode, and the outdoor unit microcontroller 5 is used to control the power consumption control module 6 to put the outdoor unit into the normal standby mode. In the normal standby mode, both the indoor and outdoor units keep the power supply on, shut down the load, and enable the photovoltaic input connected to the outdoor unit to charge the energy storage battery.

[0058] In an optional embodiment, when the external communication module 1 receives a power-off signal and the current time is in the second time period, the indoor unit microcontroller 2 is used to control the power consumption control module 6 to put the indoor unit into a low-power standby mode, and the outdoor unit microcontroller 5 is used to control the power consumption control module 6 to put the outdoor unit into the low-power standby mode. In the low-power standby mode, the indoor unit keeps the power supply on and shuts down the load, while the outdoor unit shuts down the power supply.

[0059] In this embodiment of the application, the first time period and the second time period can be divided into daytime and nighttime, which can be set according to the actual situation. For example, the first time period can be from 6:00 to 18:00, and the second time period can be from 18:00 to 6:00 the next day.

[0060] In this embodiment, if an energy storage battery is included, and the battery is not fully charged during the daytime, the outdoor unit's mainboard needs to control the photovoltaic module to charge the battery, thus entering normal standby mode. If the battery is not fully charged at night, it enters ultra-low power standby mode, and during the daytime, it switches back to normal standby mode, turning on the outdoor unit's mainboard to charge the battery. If no energy storage module is included, it directly enters ultra-low power standby mode.

[0061] This application, through the setting of the power consumption control module, enables the outdoor unit of an air conditioner with an external detachment and internal power supply to be woken up when the power is completely cut off after entering the ultra-low power standby mode, thus solving the technical problem that the air conditioner with an external detachment and internal power supply cannot meet the requirements of ultra-low power standby.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An air conditioning control circuit, comprising: The external communication module, indoor unit microcontroller unit, indoor unit communication module, outdoor unit communication module, and outdoor unit microcontroller unit are characterized in that the air conditioning control circuit further includes a power consumption control module, wherein: The external communication module is connected to the indoor unit microcontroller unit, the indoor unit microcontroller unit is connected to the indoor unit communication module, the indoor unit communication module is connected to the outdoor unit communication module, the outdoor unit communication module is connected to the outdoor unit microcontroller unit, the power consumption control module is connected to the indoor unit microcontroller unit and the outdoor unit microcontroller unit respectively, and is also connected to the communication line between the indoor unit communication module and the outdoor unit communication module; The external communication module is used to receive external switch signals. The indoor unit microcontroller unit is used to control the indoor unit communication module to transmit the switch signals to the outdoor unit communication module. It is also used to control the power consumption control module to make the indoor unit enter or exit the low-power standby mode according to the switch signals. The outdoor unit microcontroller unit is used to receive the switch signals transmitted by the external communication module and control the power consumption control module to make the outdoor unit enter or exit the low-power standby mode according to the switch signals. The power consumption control module includes: a first power control switch module, a normally open relay, a normally closed relay, a first diode, and a second diode, wherein: The first power control switch module is connected to the outdoor unit microcontroller unit. One end of the normally open relay is connected to the outdoor unit switching power supply, and the other end is connected to the first power control switch module and the normally closed relay respectively. One end of the normally closed relay is connected to the first power control switch module and the normally open relay respectively, and the other end is connected to the communication line between the indoor unit communication module and the outdoor unit communication module. The first diode and the second diode are disposed between the normally open relay and the normally closed relay, and the first diode and the second diode are connected in parallel and in opposite directions. The first power control switch module is used to control the switching state of the normally open relay and the normally closed relay. The outdoor unit switching power supply is the main board power supply of the outdoor unit. The normally open relay is in the open state when the power is off, and the normally closed relay is in the closed state when the power is off. The first diode and the second diode are used to prevent reverse connection and prevent circulating current.

2. The circuit according to claim 1, characterized in that, The power consumption control module further includes: a second power control switch module, wherein: The second power control switch module is connected to the indoor unit micro control unit, the indoor unit switching power supply, and multiple loads of the indoor unit, respectively. The second power control switch module is used to cut off or turn on the current path of the indoor unit switching power supply to the multiple loads according to the control signal of the indoor unit microcontroller.

3. The circuit according to claim 2, characterized in that, When the external communication module receives a shutdown signal, the indoor unit microcontroller unit is used to control the indoor unit communication module to transmit the shutdown signal to the outdoor unit communication module, and is also used to send a standby command to the second power control switch module. The second power control switch module is used to cut off the current path of the indoor unit switching power supply to the multiple loads according to the standby command. The outdoor unit microcontroller unit is used to send a shutdown command to the first power control switch module according to the shutdown signal. The first power control switch module is used to control the normally open relay to open and the normally closed relay to close according to the shutdown command, so as to turn off the outdoor unit switching power supply.

4. The circuit according to claim 3, characterized in that, When the external communication module receives a power-on signal, the indoor unit microcontroller unit sends a power-on command to the indoor unit communication module and the second power control switch module. The second power control switch module is used to conduct the current path of the indoor unit switching power supply to the multiple loads according to the power-on command. The indoor unit communication module is also used to reuse the communication line with the outdoor unit communication module, and transmit an electrical signal to the normally open relay through the communication line and the normally closed relay in the closed state to supply power to the normally open relay, so that the normally open relay is energized and closed to start the outdoor unit switching power supply.

5. The circuit according to claim 4, characterized in that, After the outdoor unit power supply is started and the outdoor unit microcontroller is turned on, the outdoor unit microcontroller sends a power-on command to the first power control switch module. The first power control switch module supplies power to the normally open relay and the normally closed relay according to the power-on command, so as to control the normally open relay to continue to close and control the normally closed relay to open.

6. The circuit according to claim 3, characterized in that, When the external communication module receives a shutdown signal, the indoor unit microcontroller unit is also used to start a timer. If no new signal is received within a preset time period, the indoor unit communication module is controlled to transmit the shutdown signal to the external unit communication module and send a standby command to the second power control switch module.

7. The circuit according to claim 1, characterized in that, The circuit also includes an energy storage battery, which is charged via an outdoor unit switching power supply.

8. The circuit according to claim 7, characterized in that, When the external communication module receives a power-off signal and the current time is within the first time period, the indoor unit microcontroller unit controls the power consumption control module to put the indoor unit into a normal standby mode, and the outdoor unit microcontroller unit controls the power consumption control module to put the outdoor unit into the normal standby mode. In the normal standby mode, both the indoor and outdoor units keep the power supply on, shut down the load, and enable the photovoltaic input connected to the outdoor unit to charge the energy storage battery.

9. The circuit according to claim 7, characterized in that, When the external communication module receives a shutdown signal and the current time is in the second time period, the indoor unit microcontroller unit controls the power consumption control module to put the indoor unit into a low-power standby mode, and the outdoor unit microcontroller unit controls the power consumption control module to put the outdoor unit into the low-power standby mode. In the low-power standby mode, the indoor unit keeps the power supply on and shuts down the load, while the outdoor unit shuts down the power supply.

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