Air conditioner indoor and outdoor unit power supply circuit, apparatus, air conditioner, control method, and medium

Abstract

The present application discloses an air conditioner indoor and outdoor unit power supply circuit, an apparatus, an air conditioner, a control method, and a medium. The air conditioner indoor and outdoor unit power supply circuit comprises an indoor unit circuit (100) and an outdoor unit circuit (200). The indoor unit circuit (100) comprises an indoor-outdoor unit terminal block (112) and an indoor control module (121) configured to drive and control an indoor load. The indoor-outdoor unit terminal block (112) comprises an indoor unit power supply interface for acquiring a direct current power supply. The outdoor unit circuit (200) comprises a power input terminal block (201) configured to connect to an external alternating current power supply, a power conversion module (220) configured to convert the external alternating current power supply to output two paths of stepped-down direct current power supplies, and an outdoor control module (210) configured to drive and control an outdoor load, wherein one output end of the power conversion module (220) is connected to the indoor unit power supply interface, and the other output end is configured to supply power to the outdoor load.

Description

Air conditioner internal and external unit power supply circuit, device, air conditioner, control method and medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202410134837.9 filed on January 30, 2024, entitled “Power supply circuit, device, air conditioner, control method and medium for indoor and outdoor units of air conditioner”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of air conditioning technology, and in particular to a power supply circuit, device, air conditioner, control method and medium for indoor and outdoor units of an air conditioner. Background Art

[0004] Currently, air conditioning systems consist of indoor and outdoor units. The indoor unit is typically connected to the AC mains, which then provides power to the outdoor unit via a high-voltage cable. Therefore, both units require AC / DC power conversion circuits to provide DC power to the indoor and outdoor loads, respectively. However, due to the high voltage of the AC mains, safety requirements necessitate larger spacing between adjacent circuits. This necessitates a corresponding increase in the size of the main control circuit boards in both units, compressing the internal space of the indoor unit.

[0005] Summary of the Invention

[0006] The purpose of this application is to solve at least one of the technical problems existing in the prior art and to provide an air conditioner indoor and outdoor unit power supply circuit, device, air conditioner, control method and medium.

[0007] In a first aspect, an embodiment of the present application provides a power supply circuit for an indoor and outdoor unit of an air conditioner, comprising:

[0008] An indoor unit circuit, comprising an indoor and outdoor unit connection socket and an indoor control module for driving and controlling indoor loads, wherein the indoor and outdoor unit connection socket comprises an indoor unit power supply interface for obtaining a DC power supply to supply power to the indoor loads, and the indoor unit power supply interface is connected to the indoor control module; and

[0009] The outdoor unit circuit includes a power supply socket for connecting to an external AC power supply, a power conversion module for converting the external AC power supply into two stepped-down DC power supplies, and an outdoor control module for driving and controlling the outdoor load. The input end of the power conversion module is connected to the power supply socket, one output end of the power conversion module is connected to the indoor unit power supply interface, and the other output end is used to supply power to the outdoor load.

[0010] In the power supply circuit of the indoor and outdoor units of the air conditioner provided in the embodiment of the present application, the indoor unit circuit also includes a first-level step-down module for powering the indoor first-level load, and a second-level step-down module for powering the indoor second-level load. The input end of the first-level step-down module is connected to the indoor unit power supply interface, and the input end of the second-level step-down module is connected to the output end of the first-level step-down module. The operating power of the indoor first-level load is higher than the operating power of the indoor second-level load.

[0011] In the power supply circuit of the indoor and outdoor units of the air conditioner provided in the embodiment of the present application, the indoor unit circuit includes an indoor unit primary circuit and an indoor unit secondary circuit, the indoor and outdoor unit terminal sockets and the primary step-down module are located in the indoor unit primary circuit; the indoor control module and the secondary step-down module are located in the indoor unit secondary circuit.

[0012] In the power supply circuit of the indoor and outdoor units of the air conditioner provided in an embodiment of the present application, the indoor unit circuit also includes a first switching device for controlling the connection or disconnection between the indoor primary load and the primary step-down module, and the first switching device is connected to the indoor control module.

[0013] In the power supply circuit of the indoor and outdoor units of the air conditioner provided in an embodiment of the present application, the power conversion module includes a rectifier module connected to the power socket, a primary winding connected to the output end of the rectifier module, a first secondary winding connected to the indoor unit power supply interface, and a second secondary winding for connecting to the outdoor load.

[0014] In the power supply circuit of the indoor and outdoor units of the air conditioner provided in an embodiment of the present application, the indoor and outdoor unit terminal socket also includes a standby control port connected to the indoor control module, and the power conversion module includes a second switching device for controlling the passage or disconnection of the second secondary winding, and the second switching device is connected to the standby control port.

[0015] In the air conditioner indoor and outdoor unit power supply circuit provided in the embodiment of the present application, the power conversion module further includes an anti-interference module, and the output end of the rectifier module is connected to the primary winding through the anti-interference module.

[0016] In the air conditioner indoor and outdoor unit power supply circuit provided in the embodiment of the present application, the power conversion module further includes a power factor correction module, and the output end of the rectifier module is connected to the primary winding through the power factor correction module.

[0017] In the power supply circuit of the indoor and outdoor units of the air conditioner provided in an embodiment of the present application, the indoor unit circuit also includes a load power supply port for supplying power to the three-level indoor load, and a third switching device for controlling the power on or off of the load power supply port. The load power supply port is connected to the indoor unit power supply interface through the third switching device, and the third switching device is connected to the indoor control module.

[0018] In a second aspect, an embodiment of the present application provides an air conditioner indoor and outdoor unit power supply device, the air conditioner indoor and outdoor unit power supply device including an indoor circuit board for installation on the indoor unit and an outdoor circuit board for installation on the outdoor unit, the indoor circuit board including the indoor unit circuit in the air conditioner indoor and outdoor unit power supply circuit as described in the embodiment of the first aspect above, and the outdoor circuit board including the outdoor unit circuit in the air conditioner indoor and outdoor unit power supply circuit as described in the embodiment of the first aspect above.

[0019] In the air conditioner indoor and outdoor unit power supply device provided in the embodiment of the present application, the indoor circuit board includes an indoor primary circuit board and an indoor secondary circuit board. The indoor primary circuit board includes the indoor primary circuit in the air conditioner indoor and outdoor unit power supply circuit as described in the first aspect embodiment above, and the indoor secondary circuit board includes the indoor secondary circuit in the air conditioner indoor and outdoor unit power supply circuit as described in the first aspect embodiment above.

[0020] In a third aspect, an embodiment of the present application provides an air conditioner, comprising the air conditioner indoor and outdoor unit power supply circuit as described in the embodiment of the first aspect above or the air conditioner indoor and outdoor unit power supply device as described in the embodiment of the second aspect above.

[0021] In a fourth aspect, an embodiment of the present application provides a control method for a power supply circuit of an indoor and outdoor unit of an air conditioner, which is applied to the indoor control module of the power supply circuit of the indoor and outdoor unit of the air conditioner as described in the embodiment of the first aspect above, wherein the indoor unit circuit further includes a primary step-down module for powering an indoor primary load, and a secondary step-down module for powering an indoor secondary load, the primary step-down module is connected to the power access port, and the secondary step-down module is connected to the primary step-down module, and the operating power of the indoor primary load is higher than the operating power of the indoor secondary load; the indoor unit circuit includes an indoor unit primary circuit and an indoor unit secondary circuit, the indoor and outdoor unit wiring socket, the power adapter and the primary step-down module are located in the indoor unit primary circuit; the indoor control module and the secondary step-down module are located in the indoor unit secondary circuit; the indoor unit primary circuit further includes a first switch device for controlling the connection or disconnection of the indoor primary load and the primary step-down module, and the first switch device is connected to the indoor control module;

[0022] The control method includes:

[0023] Sending a first standby signal to the first switching device to control the first-level step-down module to be disconnected from the first-level indoor load;

[0024] or,

[0025] A first wake-up signal is sent to the first switching device to control the first-level buck module to be connected to the indoor first-level load.

[0026] In a fifth aspect, an embodiment of the present application provides a method for controlling a power supply circuit for an indoor and outdoor unit of an air conditioner, which is applied to the indoor control module of the power supply circuit for the indoor and outdoor unit of the air conditioner as described in the embodiment of the first aspect above, wherein the power conversion module includes a rectifier module connected to the power adapter, a primary winding connected to the output end of the rectifier module, a first secondary winding connected to the power access port, and a second secondary winding for connecting to an outdoor load, the indoor and outdoor unit connection socket also includes a standby control port connected to the indoor control module, the power conversion module includes a second switching device for controlling the passage or disconnection of the second secondary winding, and the second switching device is connected to the standby control port;

[0027] The control method includes:

[0028] sending a second standby signal to the second switching device through the standby control port to cut off the second secondary winding and stop supplying power to the outdoor load;

[0029] or,

[0030] A second wake-up signal is sent to the second switching device through the standby control port, so as to turn on the second secondary winding and resume power supply to the outdoor load.

[0031] In a sixth aspect, an embodiment of the present application provides a method for controlling a power supply circuit for an indoor and outdoor unit of an air conditioner, the method being applied to the indoor control module of the power supply circuit for the indoor and outdoor unit of the air conditioner as described in the embodiment of the first aspect above, wherein the indoor unit circuit further includes a load power supply port for supplying power to a three-level indoor load, and a third switch device for controlling power on or off of the load power supply port, the load power supply port being connected to the indoor unit power supply interface via the third switch device, and the third switch device being connected to the indoor control module;

[0032] The control method includes:

[0033] Sending a third standby signal to the third switch device to control the indoor unit power supply interface to be disconnected from the load power supply interface;

[0034] or,

[0035] A third wake-up signal is sent to the third switch device to control the indoor unit power supply interface to be connected to the load power supply interface.

[0036] In the seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the air conditioner control method described in the fourth to sixth aspects of the embodiments above.

[0037] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purposes and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0039] The present application is further described below with reference to the accompanying drawings and embodiments;

[0040] FIG1 is a schematic diagram of a power supply circuit for an air conditioner indoor and outdoor unit according to an embodiment of the present application;

[0041] FIG2 is a schematic structural diagram of an indoor unit circuit according to an embodiment of the present application;

[0042] FIG3 is a schematic structural diagram of an indoor unit circuit provided by another embodiment of the present application;

[0043] FIG4 is a circuit connection diagram of the power supply circuits for the indoor and outdoor units of the air conditioner provided in an embodiment of the present application;

[0044] FIG5 is a schematic structural diagram of a power conversion module provided in an embodiment of the present application;

[0045] FIG6 is a schematic structural diagram of a power supply device for an air conditioner indoor and outdoor unit provided in an embodiment of the present application; and

[0046] FIG7 is a schematic structural diagram of a power supply device for an air conditioner indoor and outdoor unit provided in another embodiment of the present application. DETAILED DESCRIPTION

[0047] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0048] In the description of this application, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. "at least one" means one or more, "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0049] It should be noted that the terms "dispose," "install," and "connect" in the embodiments of this application should be interpreted broadly. Those skilled in the art can reasonably determine the specific meanings of these terms in the embodiments of this application based on the specific content of the technical solution. For example, the term "connect" can refer to mechanical connection, electrical connection, or communication; it can refer to direct connection or indirect connection through an intermediary.

[0050] It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0051] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0052] Currently, air conditioning systems consist of indoor and outdoor units. The indoor unit is typically connected to AC mains power, which is then supplied to the outdoor unit via a high-voltage power cable. Therefore, both the indoor and outdoor units require AC / DC power conversion circuits to rectify the AC mains power into DC power, thereby powering the loads of the indoor and outdoor units, respectively. Furthermore, due to the high voltage of the AC mains power, a safe distance must be set between adjacent electronic components to minimize the risk of short circuits, sparks, and contact failures. This increases the size of the main control circuit boards in both units, compressing the installation space within the indoor units given their limited size.

[0053] Based on this, the present application provides an air conditioner indoor and outdoor unit power supply circuit, device, air conditioner, control method and medium. By setting a power access socket in the outdoor unit circuit to obtain external AC power, the power supply side of the air conditioning system is adjusted to the outdoor side. The power access socket transmits the external AC power to the power conversion module for rectification and voltage reduction. Then, the two-way voltage-reduced DC power output by the power conversion module can be used to power the outdoor load, and the other can be used to power the indoor load through the indoor unit power supply interface of the indoor unit circuit. Therefore, the air conditioner indoor and outdoor unit power supply circuit provided by the embodiment of the present application optimizes the air conditioner indoor and outdoor unit power supply circuit architecture and reuses the power conversion module of the outdoor unit circuit to power the indoor load. Therefore, the indoor unit circuit and the outdoor unit circuit do not need to be configured with power conversion modules separately to independently power the indoor / outdoor loads. The indoor unit circuit does not need to set up isolation devices for the relatively high-voltage external AC power supply or increase the distance between electronic devices to meet the isolation conditions. The size of the indoor unit circuit can be reduced, and the internal space of the indoor unit can be freed up, which is helpful for the layout design of the internal space of the air conditioning system.

[0054] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0055] In a first aspect, embodiments of the present application provide a power supply circuit for indoor and outdoor units of an air conditioner. Referring to FIG1 , FIG1 is a schematic diagram of the structure of the power supply circuit for indoor and outdoor units of an air conditioner provided in an embodiment of the present application. It will be understood that the power supply circuit for indoor and outdoor units of an air conditioner includes an indoor unit circuit 100 and an outdoor unit circuit 200. The power supply circuit for indoor and outdoor units of an air conditioner is applied within an air conditioning system, with the indoor unit circuit 100 applied to the indoor unit of the air conditioning system and the outdoor unit circuit 200 applied to the outdoor unit of the air conditioning system. For the case where power is drawn from the indoor side of the air conditioning system, the indoor unit circuit 100 includes an indoor and outdoor unit connection socket 112 and an indoor control module 121, while the outdoor unit circuit 200 includes a power supply socket 201, a power conversion module 220, and an outdoor control module 210. The power supply socket 201 is used to obtain external AC power and input it to the power conversion module 220. By providing the power supply socket 201 in the outdoor unit circuit 200 to obtain external AC power, the layout of power supply and collection is adjusted, eliminating the need for corresponding electronic components for obtaining external AC power in the indoor unit circuit 100, thereby helping to reduce the size of the indoor unit circuit 100.

[0056] Specifically, the power socket 201 includes an AC live port, an AC neutral port, and an AC ground port. External AC power is connected to the AC live port, AC neutral port, and AC ground port of the power socket 201 via the outdoor unit AC live wire L1, the outdoor unit AC neutral wire N1, and the outdoor unit AC ground wire PE1, respectively. This allows the power socket 201 to obtain external AC power. The power conversion module 220 in the outdoor unit circuit 200 is connected to the AC live port, AC neutral port, and AC ground port of the power socket 201, respectively. The power socket 201 can then convert the external AC power into power by inputting it into the power conversion module 220.

[0057] After the power conversion module 220 of the outdoor unit circuit 200 obtains the external AC power supply, it can rectify and step down the external AC power supply to obtain a stepped-down DC power supply, and the power conversion module 220 divides the stepped-down DC power supply into two outputs, one of which supplies power to the outdoor load 260 (including the outdoor control module 210) of the outdoor unit, and the other output is connected to the indoor unit power supply interface of the indoor and outdoor unit terminal socket 112 in the indoor unit circuit 100 through the DC live wire and the DC ground wire, so that there is no need to set a corresponding AC / DC conversion circuit in the indoor unit circuit 100 to provide DC power for the indoor unit. The indoor load of the indoor unit can obtain DC power through the indoor unit power supply interface. Therefore, the air-conditioning indoor and outdoor unit power supply circuit provided in the embodiment of the present application adjusts the power supply side of the air-conditioning system to the outdoor side by optimizing the power supply circuit architecture, and reuses the power conversion module 220 of the outdoor unit circuit 200 to power the indoor load, so that the indoor unit circuit 100 does not need to carry a relatively high-voltage external AC power supply, nor does it need to be affected by the external AC power supply. The source is used to set an isolation device or increase the distance between electronic devices to meet the isolation conditions, while saving electronic devices in the indoor unit circuit 100 and simplifying the complexity of the indoor unit circuit 100. At this time, the indoor unit circuit 100 and the outdoor unit circuit 200 only need a group of isolated weak-current connection lines (including the outdoor unit DC live line L2 and the outdoor unit DC neutral line PGND) and the indoor and outdoor unit signal line S to connect. Compared with the power supply circuit architecture in the related art, the power supply side of the air-conditioning system is adjusted to the outdoor side, and the strong-current connection line group originally used to carry the external AC power to the indoor unit circuit 100 is replaced with the outdoor unit DC live line L2 and the outdoor unit DC neutral line PGND in the weak-current connection line group to realize the power supply of the indoor unit circuit 100 and the outdoor unit 200. There is no need to set up AC-DC power conversion circuits for the indoor unit and the outdoor unit respectively, nor is there a need to provide a strong-current connection line group between the indoor and outdoor units to divert the external power obtained by the indoor unit to the outdoor unit circuit, thereby reducing the circuit cost while reducing the size of the indoor unit circuit 100, freeing up the internal space of the indoor unit, and facilitating the layout design of the internal space of the indoor unit in the air-conditioning system.

[0058] In addition, since the indoor unit circuit 100 can obtain DC power directly from the outdoor unit circuit 200, there is no need to convert the external AC power, and the power supply side of the air-conditioning system is adjusted to the outdoor side, that is, the power supply of the air-conditioning system is realized through the power supply socket of the outdoor unit circuit 200. The indoor unit circuit 100 no longer needs to carry an external AC power supply. Since the DC power supply obtained from the outdoor unit circuit 200 (such as a 5 volt to 30 volt DC power supply) is much smaller than the external AC power supply (such as a 220 volt or 380 volt AC power supply), it can reduce dangerous situations such as circuit short circuits and sparks caused by high voltage in the indoor unit circuit 100.

[0059] It should be noted that the indoor and outdoor unit signal line S connected between the indoor unit circuit 100 and the outdoor unit circuit 200 is used for communication between the indoor control module 121 and the outdoor control module 210. Specifically, the indoor and outdoor unit terminal block 112 in the indoor unit circuit 100 also includes a communication port, and the indoor and outdoor unit signal line S is respectively connected to the outdoor control module 210 and the indoor control module 121 through the communication port.

[0060] It should be noted that one output end of the power conversion module 220 can be connected to the outdoor control module 210, thereby not only supplying power to the outdoor control module 210 but also controlling, through the outdoor control module 210, whether to supply power to outdoor loads 260 other than the outdoor control module 210. This is equivalent to the power conversion module 220 supplying power to the outdoor loads 260 other than the outdoor control module 210 through the outdoor control module 210. Correspondingly, the other output end of the power conversion module 220 can be connected to the indoor control module 121 and indoor loads other than the indoor control module 121 through the indoor unit power supply interface in the indoor unit circuit 100, thereby supplying power to the indoor control module 121 while controlling the power on and off of indoor loads other than the indoor control module 121 through the indoor unit power supply interface in the indoor unit circuit 100.

[0061] It should be noted that in related art, indoor units include not only an indoor unit control board but also a display board. The display board is a circuit board that carries temperature and humidity sensors, a digital display, and a display controller. The display controller acquires temperature and humidity data detected by the temperature and humidity sensors and transmits it to the digital display for external display, allowing users to understand the indoor unit's environmental parameters. The display controller also connects to the indoor unit main controller in the indoor unit control board for data exchange. Furthermore, the display board is independently equipped with a display step-down module for powering the various electronic components within the display board. This display step-down module is connected to the power conversion circuit of the indoor unit board in related art. The air conditioner indoor and outdoor unit power supply circuit provided in the embodiment of the present application not only optimizes the power supply architecture between the indoor and outdoor units, but also integrates and optimizes the architecture of the indoor unit board and the display panel in the indoor unit, and merges the functions of the display controller of the display panel and the indoor unit main controller of the indoor unit board in the related art, and only uses one controller (i.e., the indoor control module 121) to realize the functions of the display controller and the indoor unit main controller. At this time, the electronic components originally carried by the display panel can be powered by the indoor unit power supply interface of the indoor and outdoor unit terminal socket 112, further compressing the circuit size in the indoor unit and freeing up the internal space of the indoor unit.

[0062] Referring to FIG2 , FIG2 is a schematic diagram of the structure of the indoor unit circuit 100 provided by another embodiment of the present application. It is understood that the indoor unit circuit 100 may include multiple step-down modules with different step-down levels. These step-down modules can be simultaneously connected to the indoor unit power supply interface, so that the step-down modules with different step-down levels can be used to step down the DC power supplied by the outdoor unit circuit 200 to obtain power supplies of different voltages, thereby meeting the power requirements of indoor loads with different operating powers and effectively performing energy management. These step-down modules can also be connected sequentially according to the step-down level to step down the DC power supplied by the outdoor unit circuit 200 step by step to power indoor loads with different operating voltages, thereby reducing energy waste. In addition, by providing multiple step-down modules with different step-down levels to achieve hierarchical power supply, the flexibility and scalability of the indoor unit circuit 100 can be improved. At the same time, the power supply area for indoor loads with different operating powers can be divided. This not only reduces mutual interference between indoor loads with different operating powers during operation, but also reduces the load intensity of the indoor unit circuit 100, extends the service life of the indoor unit circuit 100, effectively improves the operating efficiency of the air conditioning system, and ensures stable operation of the equipment.

[0063] Specifically, the indoor unit circuit 100 may include a cascaded primary step-down module 113 and a secondary step-down module 122, and the indoor unit includes an indoor primary load 114 and an indoor secondary load 123. The operating power of the indoor primary load 114 is higher than that of the indoor secondary load 123, and the operating voltage of the indoor primary load 114 is also higher than that of the indoor secondary load 123. Therefore, the input end of the primary step-down module 113 can be connected to the indoor unit power supply interface to obtain a DC power supply provided by the outdoor unit circuit 200, and after performing a primary step-down on the DC power supply, a primary step-down power supply is obtained. The primary step-down module 113 is simultaneously connected to the indoor primary load 114 and the secondary step-down module 122, so that the indoor primary load 114 can obtain the primary step-down power supply for operation, and the secondary step-down module 122 can perform a secondary step-down on the primary step-down power supply to obtain a secondary step-down power supply. Furthermore, the output end of the secondary step-down module 122 can be connected to the indoor secondary load 123 to provide the indoor secondary load 123 with a secondary step-down power supply. In addition, the indoor control module 121 may be connected to the output end of the corresponding step-down module according to the operating voltage of the indoor control module 121 , or more cascaded step-down modules may be provided to obtain the corresponding power supply voltage.

[0064] Referring to Figure 3, Figure 3 is a structural diagram of the indoor unit circuit 100 provided in another embodiment of the present application. It can be understood that, according to the function of the indoor unit circuit 100, the indoor unit circuit 100 is divided into an indoor unit primary circuit 110 and an indoor unit secondary circuit 120, wherein the indoor unit primary circuit 110 includes an indoor and outdoor unit connection socket 112, a power supply connection socket 201 and a primary step-down module 113, and the indoor unit secondary circuit 120 includes a secondary step-down module 122 and an indoor control module 121. It can be seen that the indoor unit primary circuit 110 is a circuit for carrying the high-power low-voltage load power supply function, and the indoor unit secondary circuit 120 is a circuit for powering low-power low-voltage loads, wherein the high-voltage power supply refers to a circuit whose voltage is higher than the DC power supply voltage of the indoor unit power supply interface of the indoor and outdoor unit connection socket 112. Source, such as the outdoor unit circuit 200 is connected to an external AC power supply with a voltage of 220 volts or 380 volts; a low-voltage load refers to a load powered by a DC power supply provided by the indoor power supply interface of the indoor and outdoor unit terminal block 112 (that is, a power supply with a voltage lower than the external AC power supply, such as a power supply with a voltage of 12 volts to 36 volts); a high-power load refers to a load powered by a DC power supply provided by a first-level step-down module 113 (such as a load with an operating power of not less than 15W); a low-power load refers to a load with an operating power lower than the load powered by the DC power supply provided by the first-level step-down module 113 (such as a load with an operating power lower than 15W), that is, a load with an operating power supplied by the DC power supply provided by the second-level step-down module 122.

[0065] Therefore, by dividing the indoor unit circuit 100 into zones, electromagnetic interference between electrical components can be effectively reduced, and the stability and electromagnetic compatibility of the indoor unit circuit 100 can be improved. At the same time, the electrical design can be made clearer, which is conducive to improving the maintainability of the indoor unit circuit 100, facilitating layout adjustment of the indoor unit circuit 100, and rapid positioning and maintenance.

[0066] 4 , which is a schematic diagram illustrating circuit connections of power supply circuits for indoor and outdoor units of an air conditioner according to an embodiment of the present application. It can be understood that the power supply circuit of the indoor and outdoor units of the air conditioner may include an indoor unit primary circuit 110, an indoor unit secondary circuit 120 and an outdoor unit circuit 200. The external AC power supply is connected to the power access socket 201 in the outdoor unit circuit 200 through the outdoor unit AC live wire L1, the outdoor unit AC neutral wire N1 and the outdoor unit AC ground wire PE1. Then, the power access socket 201 transmits the obtained external AC power to the rectifier module in the power conversion module 220, and after converting it into DC power, it is input to the anti-interference module 230 for anti-interference processing (such as filtering). The DC power after anti-interference processing is then input to the primary winding 221, and the first secondary winding 222 and the second secondary winding 223 of the isolation transformer are coupled with the primary winding 221 to form the stepped-down DC power supply. The stepped-down DC power is respectively transmitted to the indoor power supply interface of the indoor and outdoor unit connection socket 112 in the indoor unit circuit 100, and the outdoor load 260 (such as an outdoor fan, an outdoor compressor, a four-way valve, an electronic expansion valve, etc.) in the outdoor unit circuit 200.

[0067] In which, the outdoor unit circuit 200 can also include an outdoor step-down module 240. When the second secondary winding 223 transmits the stepped-down DC power to the outdoor load 260, the output end of the second secondary winding 223 can be connected to the outdoor step-down module 240, and a part of the DC power output by the second secondary winding 223 is transmitted to some high-power outdoor loads 260, and the other part of the DC power is input into the outdoor step-down module 240 for step-down again, and then the DC power with the second step-down is transmitted to some low-power outdoor loads 260.

[0068] After the first secondary winding 222 transmits the stepped-down DC power supply to the indoor unit power supply interface via the outdoor unit DC live wire L2 and the outdoor unit DC neutral wire PGND, some indoor tertiary loads (such as indoor fans) that require operating voltage can directly obtain DC power through the indoor unit power supply interface. The indoor primary loads 114 (such as motors and relays in the indoor unit) can be powered and operated through the primary step-down module 113 connected to the indoor unit power supply interface, while the indoor secondary loads 123 (such as temperature and humidity sensors, voice modules, buzzers, etc.) located in the indoor unit secondary circuit 120 are powered by the secondary step-down module 122 cascaded with the primary step-down module 113. At the same time, the indoor loads (including the indoor primary loads 114 and indoor loads) are all controlled by the indoor control module 121 to start or stop.

[0069] Among them, the outdoor control module 210 is connected to the indoor control module 121 through a current loop communication circuit. Specifically, the current loop communication circuit is composed of the outdoor unit DC neutral line PGND and the indoor and outdoor unit signal line S. Among them, the indoor and outdoor unit access socket can also be provided with a communication port connected to the indoor control module 121. The outdoor control module 210 is connected to the indoor and outdoor unit signal line S, and then connected to the communication port using the indoor and outdoor unit signal line S. At the same time, the indoor control module 121 is also connected to the outdoor unit DC neutral line PGND in the indoor unit power supply interface, so that the outdoor control module 210 and the indoor control module 121 can communicate.

[0070] 4 , it can be understood that the indoor unit primary circuit 110 also includes a first switching device 116, which can be a first relay. The control end of the first switching device 116 is connected to the indoor control module 121, and one switch contact of the first switching device 116 is connected to the indoor primary load 114, and the other switch contact is connected to the output end of the primary step-down module 113. Thus, the indoor control module 121 can send different control signals to the control end of the first switching device 116 to close or open the two switch contacts of the first switching device 116, thereby realizing the power on and off control of the indoor primary load 114, and further realizing the standby control of the indoor primary load 114.

[0071] It is understandable that the indoor unit also includes a three-stage indoor load that is directly powered by the DC power converted by the power conversion module 220. For example, the power conversion module 220 can obtain a DC power supply with a voltage of 24V to 30V after converting the external AC power. At this time, the power conversion module 220 has already performed a voltage reduction conversion on the external AC power, and the indoor primary load 114 still needs the primary voltage reduction module 113 to further reduce the voltage of the DC power delivered by the power conversion module 220 to the indoor unit circuit 100 to obtain a DC power supply with a voltage of 12V; the indoor secondary load 123 needs The secondary step-down module 122 further steps down the DC power after the step-down by the primary step-down module 113 to obtain a 5V DC power supply as the power supply. Therefore, it can be seen that the operating power of both the indoor primary load 114 and the indoor secondary load 123 is low. Compared to the indoor primary load 114 and the indoor secondary load 123, the indoor tertiary loads, such as the indoor fan, require a DC power supply with a voltage of 24V to 30V. In other words, the indoor tertiary loads require the DC power provided to the indoor and outdoor unit sockets after conversion by the power conversion module 220 as their power supply. Therefore, the operating power of the indoor tertiary loads is relatively high. Therefore, the indoor unit circuit 100 can retain a load power supply interface 115 for powering these indoor tertiary loads. The load power supply interface 115 can be directly connected to the power socket 201, that is, the load power supply interface 115 can be connected to the outdoor unit DC live wire L2, so that the indoor tertiary loads can obtain relatively high-voltage DC power through the load power supply interface 115 and the power socket 201.

[0072] In order to facilitate the indoor control module 121 to control the power on and off of the three-level indoor load, a third switch device 117 can also be provided in the indoor unit circuit 100. The control end of the third switch device 117 is connected to the indoor control module 121, and one switch contact of the third switch device 117 is connected to the load power supply interface 115, and the other switch contact is connected to the power supply socket 201, so that the indoor control module 121 can control the on and off of the third switch device 117, and then control the power on or off of the load power supply interface 115, which is beneficial to improve the safety of the indoor unit circuit 100.

[0073] 4 , it can be understood that in order to reduce the power consumption of the air conditioner in standby mode, the indoor and outdoor unit terminal block 112 can also be provided with a standby control port, and the power conversion module 220 is also provided with a second switch device 250. The control end of the second switch device 250 is connected to the indoor control module 121 through the standby control port, and one switch contact of the second switch device 250 is connected to the output end of the second secondary winding 223, and the other switch contact is connected to the outdoor step-down module 240. Thus, the indoor control module 121 can control the on and off of the second switch device 250, thereby cutting off or closing the second secondary winding 223, thereby controlling the power supply of the outdoor load 260. When the air conditioner is in standby mode, the indoor control module 121 can send a cut-off signal to the control end of the second secondary winding 223 through the standby control port, so that the second secondary winding 223 is disconnected, and the outdoor load 260 cannot obtain power and shuts down, thereby realizing standby control.

[0074] It is understandable that the power conversion module 220 also includes an anti-interference module 230, one end of the anti-interference module 230 is connected to the output end of the rectifier module, and the other end is connected to the input end of the primary winding 221, wherein the anti-interference module 230 may include a filtering circuit and an electromagnetic compatibility circuit, etc., and the anti-interference module 230 can be used to suppress the electromagnetic interference of the power supply and stabilize the output power of the rectifier module. Referring to Figure 4, the anti-interference module 230 can be a filtering circuit including a filter capacitor C1 connected between the AC live wire port (i.e., the port in the power supply socket 201 connected to the external AC live wire L1) and the AC ground wire port (i.e., the port in the power supply socket 201 connected to the external AC ground wire PE1), and a filter capacitor C2 connected between the AC neutral wire port (i.e., the port in the power supply socket 201 connected to the external AC neutral wire N1) and the AC ground port.

[0075] Referring to Figure 5, Figure 5 is a schematic diagram of the structure of the power conversion module provided in an embodiment of the present application. It can be understood that a power factor correction (PFC) module can also be provided in the outdoor unit circuit 200, one end of the power factor correction module is connected to the output end of the rectifier module, and the other end is connected to the input end of the primary winding 221. If the power conversion module 220 also includes an anti-interference module 230, the other end of the power factor correction module can be connected to the input end of the anti-interference module 230. The power factor correction module can be used to improve the power factor and electromagnetic interference (EMI) indicators of the circuit. By automatically controlling the external input current, the output voltage is kept constant while improving the power factor of the system, thereby reducing the load of the power system on the power grid and power supply, reducing energy consumption and electricity expenses, and also reducing pollution and environmental impact.

[0076] It should be noted that due to the limited internal space of the indoor unit in the related art, the circuit size in the indoor unit is also limited, and it is difficult to set a power factor correction module in the power supply circuit of the indoor unit to improve the efficiency of power utilization. In the power supply circuit of the indoor and outdoor units of the air conditioner provided in the embodiment of the present application, the power supply in the air-conditioning system is obtained through the power access socket 201 set in the outdoor unit circuit 200, and the power conversion module 220 of the outdoor unit converts the obtained external AC power supply, and then provides one of the converted DC power supplies to the indoor unit circuit 100 as the power supply for the indoor unit circuit 100. Therefore, the indoor unit circuit 100 can also reuse the power factor correction module in the outdoor unit power conversion module 220 to improve the power factor of the indoor unit circuit 100, thereby effectively improving the power utilization rate of the split air conditioner.

[0077] In a second aspect, an embodiment of the present application further provides an air conditioner indoor and outdoor unit power supply device. Referring to FIG6 , FIG6 is a schematic structural diagram of the air conditioner indoor and outdoor unit power supply device provided by an embodiment of the present application. It is understood that the air conditioner indoor and outdoor unit power supply device may include an indoor circuit board 300 and an outdoor circuit board 400. The indoor circuit board 300 may carry the indoor unit circuit 100 of the air conditioner indoor and outdoor unit power supply circuit of the above-mentioned embodiment, while the outdoor circuit board 400 may carry the outdoor unit circuit 200 of the air conditioner indoor and outdoor unit power supply circuit of the above-mentioned embodiment. The indoor circuit board 300 is installed in the indoor unit of the air conditioning system, while the outdoor circuit board 400 is installed in the outdoor unit of the air conditioning system. In response to the situation in the related art where power is taken from the indoor side of the air-conditioning system, a power access socket 201 is provided on the outdoor circuit board 400 to obtain an external AC power supply by adjusting the power access interface, so as to realize power taking from the outdoor side of the air-conditioning system. The power access socket 201 transmits the external AC power supply to the power conversion module 220 in the outdoor unit circuit 200 for rectification and voltage reduction. Then, the two stepped-down DC power supplies output by the power conversion module 220 can be used to power the outdoor load 260 on one path, and the other can be used to power the indoor load through the indoor unit power supply interface of the indoor unit circuit 100.

[0078] Therefore, by optimizing the power supply circuit architecture of the indoor and outdoor units of the air conditioner, on the basis of replacing the power supply side of the air conditioning system to reduce the size of the indoor unit circuit 100, the power conversion module 220 of the outdoor circuit board 400 can be reused to power the indoor load, so that the indoor circuit board 300 and the outdoor circuit board 400 do not need to be configured with power conversion circuits separately to independently power the indoor / outdoor loads. The indoor circuit board 300 no longer carries the external AC power supply, and there is no need to set up isolation devices or increase the distance between electronic devices to meet the isolation conditions due to the external AC power supply. At the same time, the electronic devices in the indoor unit circuit 100 are saved, and the complexity of the indoor unit circuit 100 is simplified. At this time, the indoor circuit board 300 and the outdoor circuit board 400 only need to be connected through a set of isolated weak The electrical connection line group (including the outdoor unit DC live wire L2 and the outdoor unit DC neutral wire PGND) is connected to the indoor and outdoor unit signal line S. Compared with the power supply circuit architecture in the related art, the power supply side of the air-conditioning system is adjusted to the outdoor side, and the outdoor unit DC live wire L2 and the outdoor unit DC neutral wire PGND in the weak current connection line group are added to realize the power supply of the indoor unit circuit 100 and the outdoor unit 200. There is no need to set up AC-DC power conversion circuits for the indoor unit and the outdoor unit respectively, and there is no need to provide a strong current connection line group between the indoor and outdoor units to divert the external power obtained by the indoor unit to the outdoor unit circuit, thereby reducing the circuit cost while reducing the size of the indoor unit circuit 100, freeing up the internal space of the indoor unit, and helping the layout design of the internal space of the indoor unit in the air-conditioning system.

[0079] It should be noted that in the related art, the indoor unit includes not only an indoor unit control board but also a display board. The display board is a circuit board that carries a temperature and humidity sensor, a digital display, and a display controller. The display controller can obtain temperature and humidity data detected by the temperature and humidity sensor and then send it to the digital display for external display, allowing the user to understand the environmental parameters of the indoor unit. In addition, the display board is independently provided with a display step-down module for powering the various electronic components in the display board. The display step-down module is connected to the power conversion circuit of the indoor unit board in the related art. In contrast, the air conditioner indoor and outdoor unit power supply device provided in the embodiments of the present application not only optimizes the power supply architecture between the indoor and outdoor units, but also integrates and optimizes the architecture of the indoor unit board and display board in the indoor unit. The display controller of the display board and the indoor unit main controller of the indoor unit board in the related art are functionally merged, and the functions of the display controller and the indoor unit main controller are realized by only one controller (i.e., the indoor control module 121). In this case, the electronic components originally carried by the display board can be powered by the indoor unit power supply interface of the indoor and outdoor unit wiring socket 112, further reducing the size of the indoor unit circuit and freeing up space within the indoor unit.

[0080] Referring to FIG7 , which is a schematic diagram of a power supply device for indoor and outdoor units of an air conditioner according to another embodiment of the present application, it is understood that the indoor unit circuit 100 can be further divided into a primary indoor unit circuit 110 for powering high-power, low-voltage loads and a secondary indoor unit circuit 120 for powering low-power, low-voltage loads, based on the functions of the indoor unit circuit 100 . Accordingly, the indoor circuit board 300 can also be provided with a primary indoor circuit board 310 and a secondary indoor circuit board 320 , wherein the primary indoor circuit board 310 specifically carries the primary indoor circuit 110 and the secondary indoor circuit board 320 specifically carries the secondary indoor circuit 120 . By separating the indoor unit circuit 100 into different circuit boards, circuit stratification is achieved, more effectively reducing electromagnetic interference between electrical components and improving the stability and electromagnetic compatibility of the indoor unit circuit 100 . Furthermore, by separating the two circuit boards, the size of the primary indoor circuit 110 and the primary indoor circuit board 310 can be further reduced, facilitating the design of the interior space of the indoor unit.

[0081] It should be noted that the indoor secondary circuit board 320 can be the display panel in the indoor unit in the related technology. By migrating the indoor control module 121 to the indoor secondary circuit board 320 and integrating the functions into the indoor control module 121, the data processing and communication speed can be effectively improved, the system delay can be reduced, and the performance of the air-conditioning system can be improved, while helping to save energy consumption and reduce costs.

[0082] On the third aspect, the embodiments of the present application further provide an air conditioner, which may include the air conditioner indoor and outdoor unit power supply circuit of the above embodiment, or include the air conditioner indoor and outdoor unit power supply device of the above embodiment. In response to the situation in the related art where power is taken from the indoor side of the air conditioning system, by adjusting the power supply interface, a power supply socket 201 is provided on the outdoor circuit board 400 to obtain an external AC power supply, thereby achieving power taking from the outdoor side of the air conditioning system. The power supply socket 201 transmits the external AC power supply to the power conversion module 220 in the outdoor unit circuit 200 for rectification and voltage reduction. Then, the power conversion module 220 outputs two channels of DC power after voltage reduction, one of which can supply power to the outdoor load 260, and the other can supply power to the indoor load through the indoor unit power supply interface of the indoor unit circuit 100. Therefore, the air conditioner indoor and outdoor unit power supply circuit provided in the embodiment of the present application optimizes the air conditioner indoor and outdoor unit power supply circuit architecture, adjusts the power supply side of the air conditioning system to compress the size of the indoor unit circuit 100, and reuses the power conversion module 220 of the outdoor unit circuit 200 to power the indoor load, so that the indoor unit circuit 100 and the outdoor unit circuit 200 do not need to be separately configured with power conversion modules 220 to independently power the indoor / outdoor loads, the indoor unit circuit 100 does not need to carry an external AC power supply, and the indoor unit circuit 100 does not need to set up isolation devices for the relatively high-voltage external AC power supply or increase the distance between electronic devices to meet the isolation conditions. The size of the indoor unit circuit 100 can be further reduced, and the internal space of the indoor unit can be freed up, which is helpful for the layout design of the internal space of the air conditioning system.

[0083] Based on the above-mentioned power supply circuit for the indoor and outdoor units of the air conditioner, various embodiments of the control methods of the fourth aspect, fifth aspect and sixth aspect of the present application are respectively proposed.

[0084] A fourth embodiment of the present application provides a method for controlling an air conditioner. The method can be applied to an indoor control module of a power supply circuit for an indoor and outdoor unit of an air conditioner as shown in FIG4 . The method includes but is not limited to steps S110 and S120:

[0085] Step S110: sending a first standby signal to the first switching device to control the primary step-down module to be disconnected from the indoor primary load;

[0086] or,

[0087] Step S120: sending a first wake-up signal to the first switching device to control the primary buck module to be connected to the indoor primary load.

[0088] It can be understood that the first switching device 116 can be a first relay, the control end of the first switching device 116 is connected to the indoor control module 121, and one switch contact of the first switching device 116 is connected to the indoor primary load 114, and the other switch contact is connected to the output end of the primary step-down module 113, so that the indoor control module 121 can send different control signals to the control end of the first switching device 116 to close or open the two switch contacts of the first switching device 116, thereby controlling the power on and off of the indoor primary load 114, and further realizing the standby control of the indoor primary load 114. Specifically, the indoor control module 121 can send a first standby signal to the control end of the first switching device 116, The two switch contacts of the first switching device 116 are disconnected, thereby disconnecting the indoor primary load 114 from the output end of the primary step-down module 113, and the indoor primary load 114 cannot draw power from the output end of the primary step-down module 113 and shuts down, thereby realizing standby control of the indoor primary load 114; in addition, the indoor control module 121 can send a first wake-up signal to the control end of the first switching device 116, so that the two switch contacts of the first switching device 116 are closed, thereby restoring the connection between the indoor primary load 114 and the output end of the primary step-down module 113, and the indoor primary load 114 can draw power from the output end of the primary step-down module 113 and resume working, thereby realizing wake-up control of the indoor primary load 114. Therefore, the first switch device 116 can be controlled to be turned on or off through the indoor control module 121, thereby controlling the power on and off status of the indoor primary load 114, and further realizing the standby wake-up control of the indoor primary load 114. It can simplify the standby wake-up control while simplifying the circuit part of the standby wake-up control in the power supply circuit of the indoor and outdoor units of the air conditioner, which is beneficial to reducing the size of the indoor unit circuit 100, and thus freeing up the internal space of the indoor unit.

[0089] A fifth embodiment of the present application provides a method for controlling an air conditioner. The method can be applied to an indoor control module of a power supply circuit for an indoor and outdoor unit of an air conditioner as shown in FIG4 . The method includes but is not limited to steps S210 and S220:

[0090] Step S210: sending a second standby signal to the second switching device through the standby control port to cut off the second secondary winding and stop supplying power to the outdoor load;

[0091] or,

[0092] Step S220: sending a second wake-up signal to the second switching device through the standby control port, so as to turn on the second secondary winding to resume power supply to the outdoor load.

[0093] It can be understood that the control end of the second switching device 250 is connected to the indoor control module 121 through the standby control port, one switch contact of the second switching device 250 is connected to the output end of the second secondary winding 223, and the other switch contact is connected to the outdoor step-down module 240, so that the indoor control module 121 can control the on and off of the second switching device 250, and then cut off or close the second secondary winding 223, thereby controlling the power supply of the outdoor load 260. Specifically, when the indoor control module 121 sends a second standby signal to the second switching device 250 through the standby control port, the two switch contacts of the second switching device 250 are disconnected, so that the second secondary winding 223 is disconnected from the outdoor step-down module 240, and the outdoor load 260 cannot be powered by the outdoor step-down module 240 and is shut down, thereby realizing low-power standby control; when the indoor control module 121 sends a second wake-up signal to the second switching device 250 through the standby control port, the two switch contacts of the second switching device 250 are restored to connection, so that the second secondary winding 223 is connected to the outdoor step-down module 240, and then the outdoor step-down module 240 can step down the power output of the second secondary winding 223 and provide it to the outdoor load 260, so that the outdoor load 260 is powered and works, realizing wake-up control of the outdoor load 260. Therefore, the second switch device 250 can be controlled to be turned on or off through the indoor control module 121, thereby controlling the power on and off of the outdoor load 260, and further realizing the standby wake-up control of the outdoor load 260. It can simplify the standby wake-up control while simplifying the circuit part of the standby wake-up control in the power supply circuit of the indoor and outdoor units of the air conditioner, which is beneficial to reducing the size of the indoor unit circuit 100, thereby freeing up the internal space of the indoor unit.

[0094] A sixth embodiment of the present application provides a method for controlling an air conditioner. The method can be applied to an indoor control module of a power supply circuit for an indoor and outdoor unit of an air conditioner as shown in FIG4 . The method includes but is not limited to steps S310 and S320:

[0095] Step S310: sending a third standby signal to the third switch device to control the indoor unit power supply interface to be disconnected from the load power supply interface;

[0096] or,

[0097] Step S320: Sending a third wake-up signal to the third switch device to control the indoor unit power supply interface to be connected to the load power supply interface.

[0098] It can be understood that the control end of the third switch device 117 is connected to the indoor control module 121, and one switch contact of the third switch device 117 is connected to the load power supply interface 115, and the other switch contact is connected to the power supply socket 201, so that the indoor control module 121 can control the on and off of the third switch device 117, thereby controlling the power on or off of the load power supply interface 115.

[0099] Specifically, the indoor control module 121 can send a third standby signal to the control end of the third switch device 117, so that the two contacts of the third switch device 117 are disconnected, and the load power supply interface 115 is disconnected from the power access socket 201. The load power supply interface 115 is in a power-off state at this time, that is, the indoor three-level load cannot draw power from the load power supply interface 115, thereby realizing standby control of the indoor three-level load; in addition, the indoor control module 121 can also send a third wake-up signal to the control end of the third switch device 117, so that the two contacts of the third switch device 117 are restored to connection, and the load power supply interface 115 can be connected from the power access socket 201 to obtain power. The load power supply interface 115 is in a power-on state at this time, that is, the indoor three-level load can draw power from the load power supply interface 115, thereby realizing wake-up control of the indoor three-level load. Therefore, the third switch device 117 can be controlled to be turned on or off through the indoor control module 121, so as to control the power on and off of the indoor three-level load, and then realize the standby wake-up control of the indoor three-level load. It can simplify the standby wake-up control while simplifying the circuit part of the standby wake-up control in the power supply circuit of the indoor and outdoor units of the air conditioner, which is conducive to reducing the size of the indoor unit circuit 100, and thus can free up the internal space of the indoor unit.

[0100] In the seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores computer-executable instructions. The computer-executable instructions are used to enable a computer to execute the air conditioner control method in the embodiments of the fourth to seventh aspects above, for example, executing method step S110 or step S120 in the embodiment of the fourth aspect, or executing method step S210 or step S220 in the embodiment of the fifth aspect, or executing method step S310 or step S320 in the embodiment of the sixth aspect.

[0101] According to the computer-readable storage medium provided in the embodiment of the present application, an external AC power supply is obtained by setting a power access socket in the outdoor unit circuit, and the power supply side of the air-conditioning system is adjusted to the outdoor side. The power access socket transmits the external AC power supply to the power conversion module for rectification and voltage reduction. Then, the two stepped-down DC power supplies output by the power conversion module can be used to supply power to the outdoor load, and the other can be used to supply power to the indoor load through the indoor unit power supply interface of the indoor unit circuit. On this basis, the switch device can be controlled to be turned on or off through the indoor control module, thereby realizing the control of the power on and off of the load, and then realizing the standby wake-up control of the load. It can simplify the standby wake-up control while simplifying the circuit part of the standby wake-up control in the power supply circuit of the indoor and outdoor units of the air conditioner, which is conducive to reducing the size of the indoor unit circuit, and thus freeing up the internal space of the indoor unit.

[0102] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on computer-readable media, which can include computer storage media or non-transitory media and communication media or transient media. As is well known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVDs) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0103] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A power supply circuit for an air conditioner indoor and outdoor unit, comprising: An indoor unit circuit, comprising an indoor and outdoor unit connection socket and an indoor control module for driving and controlling indoor loads, wherein the indoor and outdoor unit connection socket comprises an indoor unit power supply interface for obtaining a DC power supply to supply power to the indoor loads, and the indoor unit power supply interface is connected to the indoor control module; and The outdoor unit circuit includes a power supply socket for connecting to an external AC power supply, a power conversion module for converting the external AC power supply into two stepped-down DC power supplies, and an outdoor control module for driving and controlling the outdoor load. The input end of the power conversion module is connected to the power supply socket, one output end of the power conversion module is connected to the indoor unit power supply interface, and the other output end is used to supply power to the outdoor load.

2. The power supply circuit for the indoor and outdoor units of the air conditioner according to claim 1, wherein: The indoor unit circuit also includes a primary step-down module for powering the indoor primary load, and a secondary step-down module for powering the indoor secondary load. The input end of the primary step-down module is connected to the indoor unit power supply interface, and the input end of the secondary step-down module is connected to the output end of the primary step-down module. The operating power of the indoor primary load is higher than the operating power of the indoor secondary load.

3. The power supply circuit for the indoor and outdoor units of the air conditioner according to claim 2, wherein: The indoor unit circuit includes an indoor unit primary circuit and an indoor unit secondary circuit. The indoor and outdoor unit connection sockets and the primary step-down module are located in the indoor unit primary circuit; the indoor control module and the secondary step-down module are located in the indoor unit secondary circuit.

4. The power supply circuit for the indoor and outdoor units of the air conditioner according to claim 3, wherein: The indoor unit circuit further includes a first switch device for controlling the connection or disconnection between the indoor primary load and the primary step-down module, and the first switch device is connected to the indoor control module.

5. The power supply circuit for the indoor and outdoor units of an air conditioner according to any one of claims 1 to 4, wherein: The power conversion module includes a rectifier module connected to the power socket, a primary winding connected to the output end of the rectifier module, a first secondary winding connected to the indoor power supply interface, and a second secondary winding for connecting to the outdoor load.

6. The power supply circuit for the indoor and outdoor units of the air conditioner according to claim 5, wherein: The indoor and outdoor unit connection socket also includes a standby control port connected to the indoor control module, and the power conversion module includes a second switching device for controlling the passage or disconnection of the second secondary winding, and the second switching device is connected to the standby control port.

7. The power supply circuit for the indoor and outdoor units of an air conditioner according to claim 5 or 6, wherein: The power conversion module further includes an anti-interference module, and the output end of the rectifier module is connected to the primary winding through the anti-interference module.

8. The power supply circuit for the indoor and outdoor units of an air conditioner according to any one of claims 5 to 7, wherein: The power conversion module further includes a power factor correction module, and the output end of the rectifier module is connected to the primary winding through the power factor correction module.

9. The power supply circuit for indoor and outdoor units of an air conditioner according to any one of claims 1 to 8, wherein: The indoor unit circuit also includes a load power supply port for supplying power to the indoor three-level load, and a third switch device for controlling the power on or off of the load power supply port. The load power supply port is connected to the indoor unit power supply interface through the third switch device, and the third switch device is connected to the indoor control module.

10. A power supply device for indoor and outdoor units of an air conditioner, comprising an indoor circuit board for installation on an indoor unit and an outdoor circuit board for installation on an outdoor unit, wherein the indoor circuit board includes the indoor unit circuit in the power supply circuit for indoor and outdoor units of an air conditioner as described in any one of claims 1 to 9, and the outdoor circuit board includes the outdoor unit circuit in the power supply circuit for indoor and outdoor units of an air conditioner as described in any one of claims 1 to 9.

11. The power supply device for indoor and outdoor units of an air conditioner according to claim 10, wherein: The indoor circuit board includes an indoor primary circuit board and an indoor secondary circuit board. The indoor primary circuit board includes the indoor primary circuit in the power supply circuit of the indoor and outdoor units of the air conditioner as described in claim 3. The indoor secondary circuit board includes the indoor secondary circuit in the power supply circuit of the indoor and outdoor units of the air conditioner as described in claim 3.

12. An air conditioner comprising the power supply circuit for indoor and outdoor units of an air conditioner according to any one of claims 1 to 10 or the power supply device for indoor and outdoor units of an air conditioner according to any one of claims 10 to 11.

13. A method for controlling a power supply circuit for an air conditioner indoor and outdoor unit, applied to the indoor control module of the power supply circuit for an air conditioner indoor and outdoor unit according to claim 4, the method comprising: Sending a first standby signal to the first switching device to control the first-level step-down module to be disconnected from the first-level indoor load; or, A first wake-up signal is sent to the first switching device to control the first-level buck module to be connected to the indoor first-level load.

14. A method for controlling a power supply circuit for an air conditioner indoor and outdoor unit, applied to the indoor control module of the power supply circuit for an air conditioner indoor and outdoor unit according to claim 6, the method comprising: sending a second standby signal to the second switching device through the standby control port to cut off the second secondary winding and stop supplying power to the outdoor load; or, A second wake-up signal is sent to the second switching device through the standby control port, so as to turn on the second secondary winding and resume power supply to the outdoor load.

15. A method for controlling a power supply circuit for an air conditioner indoor and outdoor unit, applied to the indoor control module of the power supply circuit for an air conditioner indoor and outdoor unit according to claim 9, the method comprising: Sending a third standby signal to the third switch device to control the indoor unit power supply interface to be disconnected from the load power supply interface; or, A third wake-up signal is sent to the third switch device to control the indoor unit power supply interface to be connected to the load power supply interface.

16. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to enable a computer to execute the method for controlling a power supply circuit for an indoor and outdoor unit of an air conditioner according to any one of claims 13 to 15.

Images