CN115962556A

CN115962556A - Air conditioner control circuit, method, system and equipment

Info

Publication number: CN115962556A
Application number: CN202211721196.4A
Authority: CN
Inventors: 梁尚; 宋爱; 林晖
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-14

Abstract

The application relates to an air conditioner control circuit, method, system and device, the air conditioner control circuit includes: the system comprises an outer unit main control module, an outer unit communication module, a standby communication module and a power supply control module of the air conditioner; the standby communication module is used for receiving a remote controller signal of the air conditioner and outputting the remote controller signal to the external unit communication module; the outdoor unit communication module is used for transmitting the remote controller signal to the outdoor unit main control module; the outdoor unit main control module is used for outputting a power supply control signal to the power supply control module according to the remote controller signal; the power supply control module is used for controlling a power supply signal output by an external unit switching power supply of the air conditioner according to the power supply control signal, so that the output of the external unit switching power supply of the air conditioner can be controlled through the power supply control module, low-power-consumption standby is realized, and the problem that the low-power-consumption standby cannot be realized in an external-internal power supply mode of the conventional air conditioner is solved.

Description

Air conditioner control circuit, method, system and equipment

Technical Field

The application relates to the technical field of air conditioners, in particular to an air conditioner control circuit, method, system and device.

Background

With the rapid development of air conditioning technology, air conditioning equipment such as a household variable frequency air conditioner is more and more popular, and great convenience is brought to life, work and study of people.

At present, a household variable frequency air conditioner generally comprises an indoor unit and an outdoor unit, and the power supply modes of the household variable frequency air conditioner are mainly divided into an internal driving and external driving power supply mode and an external driving and external power supply mode. The internal-external power supply mode refers to a mode that an indoor unit supplies power to an outdoor unit, and alternating current of the indoor unit in the internal-external power supply mode is rectified and filtered to obtain direct current DC, for example, direct current DC of 310 volts (Volt, V) can be obtained after finishing and filtering, and the direct current DC can be supplied to main loads of direct current buses such as an internal fan, an electric heating belt and a switching power supply through the direct current buses, so that the direct current can obtain various low-voltage weak-current power supplies such as +5V, +12V, +15V and the like through the switching power supply to supply power to weak-current loads. The external-dragging-internal power supply mode refers to a mode that an outdoor unit supplies power to an indoor unit, and if the conventional air conditioner can adopt a photovoltaic energy storage hybrid power supply mode, alternating current commercial power, photovoltaic direct current and storage battery direct current are connected through the outdoor unit, and direct current is supplied to the indoor unit through the outdoor unit so as to supply power to the indoor unit.

In the implementation, in the standby mode of the indoor unit of the conventional air conditioner, the remote control receiving module needs to receive a control signal of the remote controller to restart and then operate, so that the remote control receiver module of the indoor unit must operate in the standby mode, and at this time, the switching power supplies of the indoor unit and the outdoor unit must operate simultaneously, which increases the standby power consumption of the air conditioner.

Disclosure of Invention

The application provides an air conditioner control circuit, method, system and device, and aims to solve the problem that the existing air conditioner cannot realize low-power-consumption standby.

In a first aspect, an air conditioner control circuit includes: the system comprises an external unit main control module, an external unit communication module, a standby communication module and a power supply control module of the air conditioner;

the standby communication module is used for receiving a remote controller signal of the air conditioner and outputting the remote controller signal to the outdoor unit communication module;

the outdoor unit communication module is used for transmitting the remote controller signal to the outdoor unit main control module;

the external unit main control module is used for outputting a power supply control signal to the power supply control module according to the remote controller signal;

and the power supply control module is used for controlling a power supply signal output by an external unit switching power supply of the air conditioner according to the power supply control signal.

Optionally, the air conditioner control circuit further includes: the indoor unit communication module and the indoor unit main control module;

the communication bus comprises a first communication line, a second communication line, a third communication line and a fourth communication line;

the standby communication module comprises a first normally-closed switch and an infrared receiving submodule;

the first end of the infrared receiving sub-module is electrically connected with the first end of the outer unit communication module through the first communication line, the second end of the infrared receiving sub-module is electrically connected with the first end of the first normally closed switch, the third end of the infrared receiving sub-module is electrically connected with the second end of the first normally closed switch, and the fourth end of the infrared receiving sub-module is electrically connected with the second end of the outer unit communication module through the second communication line;

the third end of the first normally closed switch is electrically connected with the second power end of the outer machine communication module through the third communication line, the four ends of the first normally closed switch are electrically connected with the first power end of the outer machine communication module through the fourth communication line, and the control end of the first normally closed switch is electrically connected with the inner machine main control module;

the first normally-closed switch is used for providing a first power supply signal provided by a first power supply end of the external unit communication module to a third end of the infrared receiving submodule and providing a power supply reference signal provided by a second power supply end of the external unit communication module to a second end of the infrared receiving submodule;

the infrared receiving submodule is used for receiving the remote controller signal, generating the remote controller signal by combining the first power supply signal and the power supply reference signal based on the remote controller signal, and outputting the remote controller signal to the second end of the outdoor unit communication module through the second communication line;

and the internal machine main control module is used for controlling the first normally closed switch to be switched off under the condition that the signal of the remote controller is a starting-up awakening signal.

Optionally, the infrared receiving sub-module includes a first infrared receiving tube and a second infrared receiving tube;

the first end of the first infrared receiving tube is electrically connected with the first communication wire, and the second end of the first infrared receiving tube is electrically connected with the first end of the first normally closed switch;

the first end of the second infrared receiving tube is electrically connected with the second end of the first normally closed switch, and the second end of the second infrared receiving tube is electrically connected with the second communication line.

Optionally, the air conditioner control circuit further includes: an internal unit switching power supply and an external unit weak current load of the air conditioner;

the power supply control module comprises a first normally open switch and a second normally open switch;

the input end of the first normally open switch is electrically connected with the direct current output end of the external machine switching power supply, the output end of the first normally open switch is electrically connected with the internal machine switching power supply, the input end of the second normally open switch is electrically connected with the weak current output end of the external machine switching power supply, the output end of the second normally open switch is electrically connected with the external machine weak current load, and the control end of the first normally open switch and the control end of the second normally open switch are both electrically connected with the power supply control signal end of the external machine main control module;

the power supply control signal is used for controlling the first normally-open switch and the second normally-open switch to enter a closed conducting state;

the first normally open switch is used for providing the power supply signal of the inner machine power supply to the inner machine switch power supply in the closed conducting state;

and the second normally open switch is used for providing the power supply signal of the external machine weak current load to the external machine weak current load in the closed conducting state.

Optionally, the air conditioner control circuit further includes: a remote control receiving module;

the power supply input end of the remote control receiving module is electrically connected with the weak current output end of the indoor unit switching power supply, and the signal output end of the remote control receiving module is electrically connected with the indoor unit main control module of the air conditioner;

the weak current output end of the internal machine switching power supply is used for providing a working power supply signal for the remote control receiving module;

the remote control receiving module is used for receiving a remote control signal based on the working power supply signal and providing the remote control signal for the internal machine main control module.

In a second aspect, an embodiment of the present application provides an air conditioner control method, where the air conditioner includes an external unit main control module, an external unit communication module, a standby communication module, and a power control module, and the air conditioner control method includes:

receiving a remote controller signal of the air conditioner through the standby communication module, and outputting the remote controller signal to the outdoor unit communication module;

transmitting the remote controller signal to the external machine main control module through the external machine communication module;

triggering the outer machine main control module to output a power control signal to the power control module according to the remote controller signal;

and controlling a power supply signal output by an external unit switching power supply of the air conditioner through the power control module according to the power control signal.

Optionally, the power supply signal includes an internal unit power supply signal and an external unit weak current load power supply signal, and the external unit main control module is triggered to output the power control signal to the power control module according to the remote controller signal, including: determining whether the remote controller signal belongs to a starting-up wake-up signal of the air conditioner or not through the outer unit main control module; and if the remote controller signal belongs to the startup awakening signal, triggering the external machine main control module to output the power supply control signal to the power supply control module based on the startup awakening signal. The power supply control signal is used for triggering the power supply control module to output the internal machine power supply signal to an internal machine switching power supply of the air conditioner, and triggering the power supply control module to output the external machine weak current load power supply signal to an external machine weak current load.

Optionally, the internal unit switching power supply is configured to supply power to an internal unit main control module of the air conditioner, and the air conditioner control method further includes: after the internal machine host module is powered on, the standby communication module is controlled to enter a power-on off state through the internal machine main control module, and the remote controller signal is a signal received by the standby communication module in a standby on state.

Optionally, the standby communication module includes a normally closed switch, and the standby communication module is controlled by the internal machine main control module to enter a power-on off state, including: the first normally closed switch is controlled to be disconnected through the internal machine main control module, and the starting-up disconnection state is a state corresponding to the disconnection of the first normally closed switch.

In a third aspect, an embodiment of the present application provides an air conditioner control system, including: the air conditioning control circuit of any of the first aspects.

In a fourth aspect, an embodiment of the present application provides an air conditioning apparatus, including: the air conditioning control system according to the third aspect.

To sum up, the air conditioner control circuit, the method, the system and the equipment provided by the embodiment of the application receive a remote controller signal of an air conditioner through the standby communication module, and output the remote controller signal to the outdoor unit communication module, so that the remote controller signal is transmitted to the outdoor unit main control module through the outdoor unit communication module, the outdoor unit main control module can output a power supply control signal to the power supply control module according to the remote controller signal, the power supply control module can control a power supply signal output by an outdoor unit switching power supply of the air conditioner according to the power supply control signal, the output of the outdoor unit switching power supply of the air conditioner is controlled through the power supply control module, low-power standby is realized, and the problem that the low-power standby cannot be realized in an external-internal power supply mode of the existing air conditioner is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an air conditioner control circuit according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of an air conditioner control circuit according to an alternative embodiment of the present application;

fig. 3 is a schematic diagram of a low-power-consumption standby circuit of an external-internal split household air conditioner according to an embodiment of the present application;

fig. 4 is a flowchart illustrating steps of an air conditioner control method according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of an air conditioner control system according to an embodiment of the present application;

fig. 6 is a block diagram of an air conditioning apparatus according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

In the related art, the external machine alternating current is rectified and filtered to obtain a direct current DC, and then the direct current DC is obtained through a Power Factor Correction (PFC) circuit, for example, in the case that the external machine alternating current of the air conditioner is rectified and filtered to obtain a direct current DC of 310V, the variable direct current of 310V to 380V can be obtained through the PFC circuit, and then the variable direct current can be connected to a direct current bus to supply Power to a load on the direct current bus. The load on the direct current bus mainly comprises a cooling fan, a compressor, a ground plate electric heater, a switching power supply and the like. The variable direct current is supplied to a weak current load through a switching power supply to obtain various low-voltage weak current power supplies of +5V, +12V, +15V and the like.

In the internal-external power supply mode of the air conditioner, the indoor unit of the air conditioner is used as the main control of the whole air conditioner, so that the main control of the indoor unit cannot be powered off, and the control of the whole air conditioner is realized. In the standby mode, the switching power supply of the indoor unit is the most important power consumption unit, so that the power consumption of the air conditioner in the standby mode is about 1 Watt (Watt, W). The inventor of the application finds that: in the standby mode, an internal pulling external air conditioner internal unit (namely the indoor unit) can cut off the power supply supplied to the outdoor unit, only the indoor unit works, the outdoor unit is completely powered off and does not work, and a fan, an electric heating device and other high-voltage load devices of the internal unit stop working in the standby mode, but the internal unit needs to receive a control signal of a remote controller through a remote controller receiving module so as to restart and work, so that the remote controller receiver module of the internal unit must work in the standby mode, and the switching power supply of the internal unit continues to work to supply power to the remote controller receiving module and a main chip control circuit module of the internal unit; although the internal machine is in a state that most of the weak current loads do not work and is in a silent state, static power consumption still exists, and the static power consumption is a main source of 1W power consumption in the standby mode.

In addition, in the air conditioner adopting the photovoltaic energy storage hybrid power supply mode, alternating current commercial power, photovoltaic direct current and storage battery direct current are connected through the outdoor unit, so that direct current is supplied to the indoor unit through the outdoor unit. Therefore, the external unit (i.e., the outdoor unit) of the external-pulling-in type air conditioner is used as the main control of the whole air conditioner, so that the main control of the external unit cannot be powered off, and the control of the whole air conditioner can be realized through the external-handing main control. In the standby mode, an internal unit of the conventional air conditioner needs to receive a control signal of a remote controller through a remote controller receiving module to restart and then work, so that the remote controller receiving module of the internal unit needs to work in the standby mode, that is, a switching power supply of the internal unit and a switching power supply of an external unit need to work simultaneously, and the standby power consumption of the external-pulling-in type air conditioner is increased.

Based on the above, one of the core ideas of the embodiments of the present application is to provide an air conditioner control circuit, a method, a system and a device, in which a standby communication module and a power control module are additionally provided in an air conditioner, so as to receive a remote controller signal of the air conditioner through the standby communication module in a standby mode and output the remote controller signal to an external unit communication module, so that the remote controller signal can be transmitted to the external unit main control module through the external unit communication module, so that the external unit main control module can output a power control signal to the power control module according to the remote controller signal, and further, a power supply signal output by an external unit switching power supply of the air conditioner can be controlled through the power control module according to the power control signal, that is, the output of the external unit switching power supply of the air conditioner is controlled through the power control module, so as to turn off the internal unit switching power supply of the air conditioner and cut off an unnecessary weak electric load power supply of the air conditioner when the air conditioner is in a standby state, thereby achieving low power standby and solving the problem that the low power standby cannot be achieved in the existing air conditioner.

Referring to fig. 1, a schematic structural diagram of an air conditioner control circuit provided in an embodiment of the present application is shown. For example, as shown in fig. 1, the air conditioner control circuit provided in the embodiment of the present application may specifically include: an external unit main control module 130, an external unit communication module 120, a standby communication module 110 and a power control module 140 of the air conditioner; the standby communication module 110 may be configured to receive a remote control signal of the air conditioner and output the remote control signal to the outdoor unit communication module 120; the outdoor unit communication module 120 may be configured to transmit the remote controller signal to the outdoor unit main control module 130; the outdoor unit main control module 130 may be configured to output a power control signal to the power control module 140 according to the remote controller signal; the power control module 140 may be configured to control a power supply signal output by an external unit switching power supply of the air conditioner according to the power control signal.

In this embodiment, the standby communication module 110 may receive a remote controller signal in a standby mode of the air conditioner, and an output end of the standby communication module 110 may be electrically connected to an input end of the outer unit communication module 120, so that the standby communication module 110 may output the remote controller signal to the outer unit communication module 120 according to the remote controller signal, and the outer unit communication module 120 may be electrically connected to the outer unit main control module 130, so that the outer unit communication module 120 may transmit the received remote controller signal to the outer unit main control module 130, and trigger the outer unit main control module 130 to output a power control signal to the power control module 140 through the remote controller signal. Specifically, after receiving the remote controller signal transmitted by the external unit communication module 120, the external unit main control module 130 may output a power control signal to the power control module 140 according to the remote controller signal, so that the power control module 140 may control the power supply signal output by the external unit switching power supply of the air conditioner according to the power control signal, thereby achieving the purpose of controlling the output of the external unit switching power supply of the air conditioner, and further turning off the internal unit switching power supply of the air conditioner and cutting off the unnecessary weak current load power supply of the air conditioner when the air conditioner is in a standby state, thereby achieving a low power consumption standby state, and solving the problem that the external-internal-dragging power supply mode of the existing air conditioner cannot achieve a low power consumption standby state.

It can be seen that the air conditioner control circuit provided in this embodiment may receive a remote controller signal of an air conditioner through the standby communication module 110, and output the remote controller signal to the outer unit communication module 120, so as to transmit the remote controller signal to the outer unit main control module 130 through the outer unit communication module 120, thereby triggering the outer unit main control module 130 to output a power control signal to the power control module 140 according to the remote controller signal, so that the power control module 140 may control a power supply signal output by an outer unit switching power supply of the air conditioner according to the power control signal, and further may control the output of the outer unit switching power supply of the air conditioner through the power control module 140, so as to implement low power standby, and solve the problem that the existing air conditioner cannot implement low power standby.

In an optional implementation manner, the air conditioner control circuit provided in this embodiment may further include: an indoor unit communication module connected to the outdoor unit communication module 120 through a communication bus; the indoor unit communication module can establish communication connection with the outdoor unit communication module 120 through a communication bus after the indoor unit is powered on, so that the indoor unit and the outdoor unit of the air conditioner can communicate normally, and the control of the air conditioner is realized.

Referring to fig. 2, a schematic structural diagram of an air conditioner control circuit according to an alternative embodiment of the present application is shown. On the basis of the foregoing embodiment, optionally, the air conditioner control circuit provided in this embodiment may further include: an indoor unit communication module 220 and an indoor unit main control module 210; the internal machine main control module 210 can control the standby communication module 110 to enter a power-on off state after being powered on, so that the standby communication module 110 is turned off and does not receive a remote controller signal of an air conditioner any more. The remote controller signal received by the standby communication module 110 may be a signal received by the standby communication module 110 in a standby closed state.

Specifically, the indoor unit communication module 220 in this embodiment may be connected to the outdoor unit communication module 120 through a communication bus, where the communication bus may include a first communication line a, a second communication line B, a third communication line C, and a fourth communication line D; the first end of the standby communication module 110 may be electrically connected to the first end of the outer unit communication module 120 and the first end of the inner unit communication module 220 through a first communication line a, the second end of the standby communication module 110 may be electrically connected to the second end of the outer unit communication module 120 and the second end of the inner unit communication module 220 through a second communication line B, the third end of the standby communication module 110 may be electrically connected to the second power terminal GND-485 of the outer unit communication module 120 and the third end of the inner unit communication module 220 through a third communication line C, and the fourth end of the standby communication module 110 may be electrically connected to the first power terminal 5V-485 of the outer unit communication module 120 and the fourth end of the inner unit communication module 220 through a fourth communication line D, so that the standby communication module 110 may output a remote controller signal to the outer unit communication module 120 after receiving a remote controller signal in an air conditioner standby mode. The second end of the standby communication module 110 may be configured to output a remote control signal to the second end of the outdoor unit communication module 120, so that the outdoor unit communication module 120 may receive the remote control signal, and transmit the remote control signal to the outdoor unit main control module 130 through the outdoor unit communication module 120.

In an optional embodiment of the present application, the standby receiving module 110 may include a first normally-closed switch K-T-N and an infrared receiving submodule 111, so that the standby receiving module 110 may receive a remote control signal of an air conditioner through the infrared receiving submodule 111, and may be electrically connected to the first power terminal 5V-485 of the outdoor unit communication module 120 and the second power terminal GND-485 of the outdoor unit communication module 120 through the first normally-closed switch K-T-N, so as to generate the remote control signal based on the received remote control signal in combination with the first power signal provided by the first power terminal 5V-485 of the outdoor unit communication module 120 and the power reference signal provided by the second power terminal GND-485. Specifically, the first end of the infrared receiving sub-module 111 may be electrically connected to the first end of the outer unit communication module 120 and the first end of the inner unit communication module 220 through the first communication line a, the second end of the infrared receiving sub-module 111 is electrically connected to the first end of the first normally closed switch K-T-N, the third end of the infrared receiving sub-module 111 is electrically connected to the second end of the first normally closed switch K-T-N, and the fourth end of the infrared receiving sub-module 111 is electrically connected to the second end of the outer unit communication module 120 and the second end of the inner unit communication module 220 through the second communication line B, so as to output a remote controller signal to the outer unit communication module 120 through the fourth end of the infrared receiving sub-module 111. In addition, the third end of the first normally closed switch K-T-N is electrically connected to the second power terminal GND-485 of the outdoor unit communication module 120 and the third end of the indoor unit communication module 220 through the third communication line C, the fourth end of the first normally closed switch K-T-N is electrically connected to the first power terminal 5V-485 of the outdoor unit communication module 120 and the fourth end of the indoor unit communication module 220 through the fourth communication line D, and the control end of the first normally closed switch K-T-N is electrically connected to the indoor unit main control module 210, so that the indoor unit main control module 210 can control the first normally closed switch K-T-N to be turned off after being powered on, and the infrared receiving sub-module 111 does not transmit a remote control signal to the outdoor unit communication module 120 any more. The first normally-closed switch K-T-N may be configured to provide a first power signal provided by a first power terminal 5V-485 of the external unit communication module 120 to a third terminal of the infrared receiving submodule 111, and may provide a power reference signal provided by a second power terminal GND-485 of the external unit communication module 120 to a second terminal of the infrared receiving submodule 111; the infrared receiving sub-module 111 may be specifically configured to receive a remote controller signal, and based on the remote controller signal, generate the remote controller signal by combining a first power signal provided by the first power terminal 5V-485 of the external unit communication module 120 and a power reference signal provided by the second power terminal GND-485, and output the remote controller signal to the second end of the external unit communication module 120 through the second communication line B; the internal machine main control module 210 may be configured to control the first normally-closed switch K-T-N to be turned off when the remote controller signal is a power-on wake-up signal.

In an alternative embodiment, the infrared receiving sub-module 111 of this embodiment may include a first infrared receiving tube D-T1 and a second infrared receiving tube D-T2, so that the infrared receiving sub-module 111 may receive the remote control signal through the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 and may output the remote control signal to the external machine communication module 120 through the second infrared receiving tube D-T2. The first end of the first infrared receiving tube D-T1 may be electrically connected to the first communication line a, such that the first end of the first infrared receiving tube D-T1 may be connected to the first end of the outdoor unit communication module 120 and the first end of the indoor unit communication module 220 via the first communication line a, the second end of the first infrared receiving tube D-T1 may be electrically connected to the first end of the first normally closed switch K-T-N, such that the second end of the first infrared receiving tube D-T1 may be connected to the second power terminal GND-485 of the outdoor unit communication module 120 via the first normally closed switch K-T-N, the first end of the second infrared receiving tube D-T2 may be electrically connected to the second end of the first normally closed switch K-T-N, such that the first end of the second infrared receiving tube D-T2 may be connected to the first power terminal 5V-485 of the outdoor unit communication module 120 via the first normally closed switch K-T-N, such that the infrared receiving submodule 111 may generate a signal based on the received remote controller signal in combination with the first power terminal 5V-N of the outdoor unit communication module 120 and the second power terminal 5V-N, and the remote controller output signal may be electrically connected to the second remote controller output terminal 111.

It should be noted that, in this embodiment, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are both infrared receiving tubes, and may exhibit one-way conductivity in a normal state; after receiving the infrared signal, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are conducted reversely. The remote controller signal may be an infrared signal transmitted by the air conditioner remote controller in an infrared transmission manner.

For example, when the remote controller sends out a high-level infrared signal, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are conducted in reverse, as shown in fig. 2, the level of the second communication line B at this time is changed into a high level, the level of the first communication line a at this time is changed into a low level, and the outdoor unit communication module 120 may transmit the high-level signal as a remote controller signal to the outdoor unit main control module 130 through the photoelectric isolation module; when the remote controller sends out an infrared signal of a low level, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are reversely cut off, the common diode characteristic is presented, the level of the second communication line B at the moment is converted back to the low level, the level of the first communication line A at the moment is converted back to the high level, the outdoor unit communication module 120 can transmit the low level signal as a remote controller signal to the outdoor unit main control module 130 through the photoelectric isolation module, and therefore the outdoor unit main control module 130 can output a power control signal to the power control module 140 according to the remote controller signal, and the transmission of a power-on restart signal in the standby mode of the air conditioner is achieved.

In an embodiment of the present application, the external unit main control module 130 may include a central processing unit W-MCU of an external unit, so that the external unit of an air conditioner may realize control of the external unit of the air conditioner through the central processing unit W-MCU, and the central processing unit W-MCU of the external unit may be connected to the external unit communication module 120 through the optoelectronic isolation module, and further may establish communication connection with the external unit communication module 120 and the internal unit of the air conditioner through the optoelectronic isolation module, so as to realize control of the air conditioner; the outer unit communication module 120 may include a 485 communication unit, so that 485 communication connection is established between the outer unit communication module 120 and the inner unit communication module 220 through the 485 communication unit, and the outer unit communication module 120 may communicate with the inner unit communication module 220 in a 485 communication manner. Of course, the external unit communication module 120 may include other device units besides the 485 communication unit, such as a second resistor R2 and a third resistor R3, which is not limited in this embodiment.

In addition, the indoor unit main control module 130 may include a central processing unit N-MCU of the indoor unit, so that the indoor unit of the air conditioner may realize control of the indoor unit of the air conditioner through the central processing unit N-MCU, and the central processing unit N-MCU of the indoor unit may be connected to the indoor unit communication module 220 through the photoelectric isolation module, and further may establish communication connection with the indoor unit communication module 220 and the outdoor unit of the air conditioner through the photoelectric isolation module, so as to realize control of the air conditioner; the outer unit communication module 220 may include a 485 communication unit, so that 485 communication connection is established between the outer unit communication module 120 and the inner unit communication module 220, and the inner unit communication module 220 may communicate with the outer unit communication module 120 in a 485 communication manner. Of course, the internal communication module 120 may include other device units besides the 485 communication unit, such as a fourth resistor R4 and a fifth resistor R5, which is not limited in this embodiment.

In an optional implementation manner, the air conditioner control circuit provided in this embodiment may further include: an internal unit switching power supply 230 of the air conditioner; the power supply signal comprises an internal machine power supply signal, the power control module 140 comprises a first normally open switch K-N-P, an input end of the first normally open switch K-N-P is electrically connected with a direct current output end of the external machine switch power supply 240, an output end of the first normally open switch K-N-P is electrically connected with the internal machine switch power supply 230, and a control end of the first normally open switch K-N-P is electrically connected with a power control signal end of the external machine main control module 130; the power supply control signal is used for controlling the first normally-open switch K-N-P to enter a closed conducting state; the first normally open switch K-N-P is configured to provide the power supply signal of the internal unit power supply to the internal unit switching power supply 230 in the closed and conductive state, so as to supply power to the internal unit switching power supply 230, thereby implementing an external internal power supply mode of the air conditioner.

In an optional embodiment of the present application, the air conditioner control circuit may further include: an outer machine weak current load 250; the power supply signal further includes an external machine weak current load power supply signal, and the power control module 140 further includes a second normally open switch K-W-2; the input end of the second normally open switch K-W-2 is electrically connected with the weak current output end of the external unit switching power supply 240, the output end of the second normally open switch K-W-2 is electrically connected with the external unit weak current load 250, and the control end of the second normally open switch K-W-2 is electrically connected with the power supply control signal end of the external unit main control module 130; the power control signal is used for controlling the second normally open switch K-W-2 to enter a closed conducting state, so that the second normally open switch K-W-2 can provide the power supply signal of the external machine weak current load to the external machine weak current load 250 in the closed conducting state.

It can be seen that, the air conditioner control circuit provided in this embodiment may further include other device modules of the air conditioner besides the external unit main control module 130, the external unit communication module 120, the standby communication module 110, the power control module 140, the internal unit communication module 220, and the internal unit main control module 210 of the air conditioner, for example, the air conditioner may further include an internal unit switching power supply 230, an external unit switching power supply 240, and an external unit weak current load 250, which is not limited in this embodiment. The power supply signal may include an internal machine power supply signal and an external machine weak current load power supply signal, the power control module 140 may include a first normally open switch K-N-P and a second normally open switch K-W-2, an input end of the first normally open switch K-N-P may be electrically connected to a direct current output end of the external machine switch power supply 230, an output end of the first normally open switch K-N-P may be electrically connected to the internal machine switch power supply 230, and a control end of the first normally open switch K-N-P may be electrically connected to a power control signal end of the external machine main control module 130, so that the external machine main control module 130 may output a power control signal to the control end of the first normally open switch K-N-P to control the first normally open switch K-N-P to enter a closed conduction state, and further, the first normally open switch K-N-P may provide the internal machine power supply signal to the internal machine switch power supply 230 in the closed conduction state, so as to supply power to the internal machine switch power supply 230; the input end of the second normally open switch K-W-2 is electrically connected to the weak current output end of the external unit switch power supply 230, the output end of the second normally open switch K-W-2 is electrically connected to the external unit weak current load 250, and the control end of the second normally open switch K-W-2 is electrically connected to the power control signal end of the external unit main control module 130, so that the external unit main control module 130 can output a power control signal to the control end of the second normally open switch K-W-2 to control the second normally open switch K-W-2 to enter a closed conduction state, and further the second normally open switch K-W-2 can provide a power supply signal of the external unit weak current load to the external unit weak current load 250 in the closed conduction state to supply power to the external unit weak current load 250.

In an optional implementation manner, the air conditioner control circuit provided in this embodiment may further include: a remote controller receiving module 260; the power input end of the remote controller receiving module 260 is electrically connected with the weak current output end of the internal unit switching power supply 230, and the signal output end of the remote controller receiving module 260 is electrically connected with the internal unit main control module 210 of the air conditioner, so that the remote controller receiving module 260 can provide the received remote controller signal to the internal unit main control module 210, and the control after the air conditioner is started and restarted is realized. The weak current output end of the internal unit switching power supply 230 may be configured to provide a working power supply signal to the remote controller receiving module 260; the remote controller receiving module 260 may be configured to receive a remote controller signal based on the operating power signal and provide the remote controller signal to the internal machine main control module 210. It should be noted that the remote control signal may refer to a signal sent by the remote control, such as a high level signal sent by the remote control, or a low level signal sent by the remote control, and the present embodiment does not specifically limit this.

In an embodiment of the present application, the weak current output end of the internal switching power supply 230 may include one or more output ends, each output end may output signals with the same or different voltage values, for example, the weak current output end of the internal switching power supply 230 may include 4 output ends, for example, the first output end may output a voltage signal of +15V, the second output end may output a voltage signal of +12V, the third output end may output a voltage signal of +5V, and the fourth output end may output a GND signal of 0V, which is not limited in this embodiment. The +5V voltage signal output by the third output end can be stabilized through a voltage stabilizing module in the internal unit to generate a working power supply signal VCC1, and the working power supply signal VCC1 can be provided for the internal unit main control module 210 to supply power to the internal unit main control module 210, so that the internal unit main control module 210 can normally work after being restarted after being started. For example, as shown in fig. 3, the voltage stabilizing module in the internal unit may generate a +3.3V voltage signal based on the +5V voltage signal output by the third output terminal, so as to serve as the working power signal VCC1 to supply power to the optoelectronic isolation module in the internal unit and the central processing unit N-MCU in the internal unit main control module 210.

Referring to fig. 3, a schematic diagram of a low power consumption standby circuit of an external pulling internal type split household air conditioner according to an embodiment of the present application is shown. After the internal machine of the air conditioner receives the shutdown signal and waits for the time T, if the startup signal is not received in the time period, the standby mode is established. Specifically, high-power loads such as an inner machine fan, electric heating and the like in the air conditioner stop working, a central processing unit W-MCU of an outer machine controls a first normally-open switch K-N-P to be switched off so as to stop supplying power to the inner machine, and at the moment, the first normally-closed switch K-T-N is switched off and closed; meanwhile, the outdoor unit central processing unit W-MCU can control the second normally open switch K-W-2 to cut off unnecessary power supplies of the outdoor unit weak current load 250, such as a +12V weak current load power supply, a +15V weak current load power supply and the like, so that the standby mode is established. The first normally-open switch K-N-P and the second normally-open switch K-W-2 can be normally-open relays, and the first normally-closed switch K-T-N can be normally-closed open relays, so that the power consumption of the air conditioner in a standby mode can be reduced by using the normally-closed relays and the normally-open relays, and the purpose of controlling the air conditioner can be achieved.

In an embodiment of the present application, the infrared receiving module of the remote control receiving module 260 of the internal machine may only identify the infrared signal of the carrier within a fixed section of frequency, for example, may only identify the infrared signal of the carrier between 30kHz and 60kHz, so as to prevent the interference of the infrared signal. Therefore, after the power key is pressed, the remote controller in this embodiment may first send out a high level signal with a duration of t1, then send out a low level signal with a duration of t2, and then send out a high level signal with a duration of t3, so as to use the signal in this process as a power-on wake-up signal of the air conditioner, thereby preventing interference of natural light, and then send out a normal power-on carrier signal, so that the remote controller receiving module 260 of the internal unit can receive and identify the power-on carrier power-on signal sent by the remote controller. The power-on wake-up signal may trigger the external unit main control module 130 to output a power control signal to the power control module 140, so that the power control module 140 may control a power supply signal output by the external unit switching power supply 240 of the air conditioner according to the power control signal to supply power to the internal unit switching power supply 230, so that the remote controller receiving module 260 of the internal unit may normally operate, for example, may receive and identify a power-on carrier power-on signal and the like sent by the remote controller.

Specifically, the standby communication module 110 in the indoor unit of the air conditioner may receive the remote controller signal in the standby mode of the air conditioner through the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2, and may transmit the remote controller signal to the outdoor unit communication module 120 through the second infrared receiving tube D-T2 and the second communication line B based on the received remote controller signal, so as to transmit the remote controller signal to the outdoor unit main control module 130 through the outdoor unit communication module 120, thereby implementing transmission of the remote controller signal in the standby mode to the outdoor unit. The remote control signal may be a signal sent by a remote control. Specifically, when the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 do not receive the remote controller signal, they exhibit the characteristic of a common diode, and at this time, the level of the first communication line a is at a high level, and the level of the second communication line B is at a low level. When the air conditioner is in a standby mode, when the remote controller sends a high-level signal, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are conducted in a reverse direction, and the characteristic of low resistance is presented, namely the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 can be understood to be changed into conducting wires, the level of the second communication wire B at the moment is changed into high level, the level of the first communication wire A at the moment is changed into low level, and at the moment, the 485 communication unit in the outdoor unit communication module 120 can transmit the high-level signal to the central processing unit W-MCU of the outdoor unit as the remote controller signal through the photoelectric isolation module, so that the central processing unit W-MCU of the outdoor unit can receive the high-level signal; when the remote controller sends a low-level signal, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are cut off reversely to present unidirectional conductivity of the diode, the level of the second communication line B at the moment is converted back to a low level, the level of the first communication line A at the moment is converted back to a high level, and the 485 communication unit in the outdoor unit can transmit the low-level signal as a remote controller signal to the central processing unit W-MCU of the outdoor unit through the photoelectric isolation module, so that the central processing unit W-MCU of the outdoor unit can receive the high-level signal.

In the process of starting and restarting the air conditioner, if a remote controller presses down a set key, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 can receive a starting signal from the remote controller, namely receive a remote controller signal in a standby mode of the air conditioner, and can transmit the remote controller signal to an outdoor unit through the second communication line B, so that a 485 communication unit in the outdoor unit can transmit the remote control signal to a central processing unit W-MCU of the outdoor unit through a photoelectric isolation module; when the central processing unit W-MCU of the external unit receives the complete high-low-high special signal, it may be considered that the power-on wake-up signal from the internal unit is received, and then the power control module 140 may control the power output by the switching power supply 240 of the external unit to supply the telecommunication signal to the internal unit. Specifically, a central processing unit W-MCU of the outdoor unit is used as an outdoor unit main control chip and can control a first normally open switch K-N-P to be conducted to supply power to the indoor unit; at this time, the internal machine switching power supply works, and various direct current signals such as +5V, +12V and 0V can be output to supply power for various loads in the internal machine. After the internal machine switching power supply normally works, the central processing unit N-MCU of the internal machine can normally work based on a direct current signal provided by the internal machine switching power supply, and if the central processing unit N-MCU can be used as an internal machine main control chip, the first normally closed switch K-T-N is controlled to be disconnected, the standby communication module 110 is disconnected from the 485 communication bus, and therefore the internal machine 485 communication circuit and the external machine 485 communication circuit are enabled to restore the integrity and try to communicate. When the power supply of the internal machine is normally established, the internal machine can start to receive a startup carrier signal subsequently sent by the remote controller through the remote controller receiving module 260, and can establish communication with the internal machine and the external machine to realize information interaction. The first normally open switch K-N-P may be a normally open relay, or may be another type of normally open electronic switch, which is not limited in this embodiment.

In an optional embodiment of the present application, an external unit of an air conditioner may adopt a photovoltaic energy storage hybrid Power supply manner, as shown in fig. 3, the external unit may access a photovoltaic direct current to a direct current bus through a Maximum Power Point Tracking (MPPT) solar controller, so as to implement photovoltaic input; the power supply can be connected with alternating current commercial power through a PFC circuit to realize commercial power input; and, the direct current of the storage battery can be directly connected to the direct current bus to realize the battery input, which is not limited in this embodiment.

Referring to fig. 4, a flowchart illustrating steps of an air conditioner control method according to an embodiment of the present application is shown. The air conditioner control method provided by the embodiment of the application can be applied to an air conditioner, the air conditioner can comprise an external unit main control module, an external unit communication module, a standby communication module and a power supply control module, and as shown in fig. 4, the air conditioner control method provided by the embodiment of the application can comprise the following steps:

step 410, receiving a remote controller signal of the air conditioner through the standby communication module, and outputting the remote controller signal to the outdoor unit communication module;

step 420, transmitting the remote controller signal to the external unit main control module through the external unit communication module;

step 430, triggering the external machine main control module to output a power control signal to the power control module according to the remote controller signal;

step 440, controlling a power supply signal output by an external unit switching power supply of the air conditioner through the power control module according to the power control signal.

It can be seen that, the remote controller signal of the air conditioner is received through the standby communication module in the embodiment of the application, and the remote controller signal is output to the outdoor unit communication module, then the remote controller signal can be transmitted to the outdoor unit main control module through the outdoor unit communication module, the outdoor unit main control module is triggered to output the power control signal to the power control module according to the remote controller signal, and therefore according to the power control signal, the power supply signal output by the outdoor unit switching power supply of the air conditioner is controlled through the power control module, the output of the outdoor unit switching power supply of the air conditioner is controlled through the power control module, low-power-consumption standby is realized, and the problem that the low-power-consumption standby cannot be realized in an external-to-internal power supply mode of the existing air conditioner is solved.

In an optional embodiment of this application, the power supply signal includes an internal machine power supply signal and an external machine weak current load power supply signal, and this embodiment triggers the external machine main control module to output the power control signal to the power control module according to the remote controller signal, and includes: determining whether the remote controller signal belongs to a starting-up wake-up signal of the air conditioner or not through the outer unit main control module; and if the remote controller signal belongs to the startup awakening signal, triggering the external machine main control module to output the power supply control signal to the power supply control module based on the startup awakening signal. The power supply control signal is used for triggering the power supply control module to output the internal machine power supply signal to an internal machine switching power supply of the air conditioner, and triggering the power supply control module to output the external machine weak current load power supply signal to an external machine weak current load.

In an optional embodiment of the present application, the internal unit switching power supply is configured to supply power to an internal unit main control module of the air conditioner, and the air conditioner control method provided in this embodiment further includes: after the internal machine host module is electrified, the standby communication module is controlled to enter a power-on off state through the internal machine main control module, and the signal of the remote controller is a signal received by the standby communication module in a standby on state.

In an optional embodiment of the present application, the standby communication module includes a first normally closed switch, and this embodiment controls, through the internal machine main control module, the standby communication module to enter a power-on off state, which may specifically include: the first normally closed switch is controlled to be disconnected through the internal machine main control module, and the starting-up disconnection state is a state corresponding to the disconnection of the first normally closed switch.

Referring to fig. 5, a schematic structural diagram of an air conditioning control system provided in an embodiment of the present application is shown. Further, an air conditioning control system is further provided in an embodiment of the present application, and as shown in fig. 5, an air conditioning control system 500 provided in an embodiment of the present application may include an air conditioning control circuit 510, where the air conditioning control circuit may include 510 the air conditioning control circuit provided in any of the above embodiments.

Referring to fig. 6, a block diagram of an air conditioner according to an embodiment of the present disclosure is shown. Further, the embodiment of the application also provides an air conditioning device, which comprises the air conditioning control system provided by any one of the above embodiments. As shown in fig. 6, the air conditioner 600 includes: an air conditioning control system 610; the air conditioning control system 610 may be the air conditioning control system described in the above embodiments.

In an alternative embodiment, an air conditioning apparatus provided in an embodiment of the present application may include: a processor, and a memory for storing executable instructions for the processor; wherein the processor is configured to execute the air conditioning control method according to any one of the above method embodiments.

Embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the air conditioner control method according to any of the foregoing embodiments.

It should be noted that, as for the method, the system, the air conditioning equipment and the medium embodiment, since they are basically similar to the air conditioning control circuit embodiment, the description is relatively simple, and the relevant points can be referred to the partial description of the air conditioning control circuit embodiment.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. An air conditioner control circuit, comprising: the system comprises an outer unit main control module, an outer unit communication module, a standby communication module and a power supply control module of the air conditioner;

the external machine main control module is used for outputting a power supply control signal to the power supply control module according to the remote controller signal;

2. The air conditioner control circuit according to claim 1, further comprising: the indoor unit communication module and the indoor unit main control module;

the first end of the infrared receiving submodule is electrically connected with the first end of the outer machine communication module through the first communication line, the second end of the infrared receiving submodule is electrically connected with the first end of the first normally closed switch, the third end of the infrared receiving submodule is electrically connected with the second end of the first normally closed switch, and the fourth end of the infrared receiving submodule is electrically connected with the second end of the outer machine communication module through the second communication line;

the third end of the first normally closed switch is electrically connected with the second power end of the outer machine communication module through the third communication line, the fourth end of the first normally closed switch is electrically connected with the first power end of the outer machine communication module through the fourth communication line, and the control end of the first normally closed switch is electrically connected with the inner machine main control module;

and the internal machine main control module is used for controlling the first normally closed switch to be switched off under the condition that the remote controller signal is a starting-up awakening signal.

3. The air conditioner control circuit of claim 2, wherein the infrared receiving sub-module comprises a first infrared receiving tube and a second infrared receiving tube;

4. The air conditioner control circuit according to any one of claims 2 to 3, further comprising: an internal unit switching power supply and an external unit weak current load of the air conditioner;

the input end of the first normally open switch is electrically connected with the direct current output end of the external unit switching power supply, the output end of the first normally open switch is electrically connected with the internal unit switching power supply, the input end of the second normally open switch is electrically connected with the weak current output end of the external unit switching power supply, the output end of the second normally open switch is electrically connected with the external unit weak current load, and the control end of the first normally open switch and the control end of the second normally open switch are both electrically connected with the power supply control signal end of the external unit main control module;

the first normally open switch is used for providing the power supply signal of the internal machine power supply to the internal machine switch power supply in the closed conducting state;

5. The air conditioner control circuit according to claim 4, further comprising: a remote control receiving module;

the power supply input end of the remote control receiving module is electrically connected with the weak current output end of the indoor unit switching power supply, and the signal output end of the remote control receiving module is electrically connected with an indoor unit main control module of the air conditioner;

6. An air conditioner control method is characterized in that the air conditioner comprises an outer unit main control module, an outer unit communication module, a standby communication module and a power supply control module, and the method comprises the following steps:

7. The air conditioner control method according to claim 6, wherein the power supply signal includes an internal machine power supply signal and an external machine weak current load power supply signal, and the triggering the external machine main control module to output the power control signal to the power control module according to the remote controller signal comprises:

determining whether the remote controller signal belongs to a starting-up wake-up signal of the air conditioner through the external unit main control module;

if the remote controller signal belongs to the startup wake-up signal, triggering the external unit main control module to output the power supply control signal to the power supply control module based on the startup wake-up signal; the power supply control signal is used for triggering the power supply control module to output the internal machine power supply signal to an internal machine switching power supply of the air conditioner, and triggering the power supply control module to output the external machine weak current load power supply signal to an external machine weak current load.

8. The air conditioner control method according to claim 7, wherein the indoor unit switching power supply is configured to supply power to an indoor unit main control module of the air conditioner, and the air conditioner control method further includes:

after the internal machine host module is powered on, the standby communication module is controlled to enter a power-on off state through the internal machine main control module, and the remote controller signal is a signal received by the standby communication module in a standby on state.

9. The air conditioner control method according to claim 7, wherein the standby communication module includes a first normally closed switch, and the controlling the standby communication module to enter the power-on off state by the indoor unit main control module includes:

the first normally closed switch is controlled to be disconnected through the internal machine main control module, and the starting-up disconnection state is a state corresponding to the disconnection of the first normally closed switch.

10. An air conditioning control system, comprising: the air conditioner control circuit according to any one of claims 1 to 6.

11. An air conditioning apparatus, characterized by comprising: the air conditioning control system of claim 10.