Control circuit with low standby power consumption and air conditioning equipment

Abstract

The utility model relates to a low standby power consumption control circuit and air conditioning equipment. The control circuit comprises an indoor module comprising an indoor controller and a first switch module and an outdoor module comprising an outdoor controller and a second switch module. A first power supply end, a second power supply end and a signal transmission end of the indoor module are respectively connected with a first power supply end, a second power supply end and a signal transmission end of the outdoor module; the first switch module is connected with a first power supply end and a signal transmission end of the indoor module and the indoor controller, and is used for realizing connection or disconnection between the first power supply end and the signal transmission end of the indoor module; and the second switch module is connected with the first power supply end and the signal transmission end of the outdoor module and the outdoor controller, and is used for switching the power supply end of the outdoor controller to be conducted with the first power supply end of the outdoor module or the signal transmission end of the outdoor module. According to the utility model, through the simple circuit design, the requirement on circuit devices is reduced, and then the hardware cost of the whole circuit is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, and more specifically, to a low standby power consumption control circuit and an air conditioner device. Background Art

[0002] As a high-energy-consuming product, in order to reduce energy consumption, the power consumption of an air conditioner in the standby state is usually designed to be less than 2W. Therefore, when the air conditioner is in the standby state, the outdoor unit must be powered off to reduce the overall energy consumption of the air conditioner. The current control method is to add a high-power relay or contactor to the indoor unit to cut off the power supply to the outdoor unit, and the cost is relatively high. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a low standby power consumption control circuit and an air conditioner device for the above-mentioned partial defects of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is to construct a low standby power consumption control circuit applied to an air conditioner device. The control circuit includes an indoor module and an outdoor module; the indoor module includes an indoor controller and a first switch module; the outdoor module includes an outdoor controller and a second switch module;

[0005] The first power supply terminal and the second power supply terminal of the indoor module are respectively connected to the first power supply terminal and the second power supply terminal of the outdoor module, and are used for connecting the mains input;

[0006] The signal transmission terminal of the indoor module is connected to the signal transmission terminal of the outdoor module, and is used for realizing the communication signal transmission between the indoor module and the outdoor module;

[0007] The first switch module is connected to the first power supply terminal of the indoor module, the signal transmission terminal of the indoor module and the indoor controller, and is used for receiving the control level of the indoor controller to realize the conduction or cut-off between the first power supply terminal of the indoor module and the signal transmission terminal of the indoor module;

[0008] The second switch module is connected to the first power supply terminal of the outdoor module, the signal transmission terminal of the outdoor module and the outdoor controller, and is used for receiving the control level of the outdoor controller to switch the power supply terminal of the outdoor controller to be conducted with the first power supply terminal or the signal transmission terminal of the outdoor module.

[0009] Preferably, in the low standby power consumption control circuit of the utility model, the first switch module includes a first relay;

[0010] The first contact of the first relay is connected to the signal transmission end of the indoor module, the second contact of the first relay is connected to the first power supply end of the indoor module, and the control coil of the first relay is connected to the indoor controller.

[0011] Preferably, in the low standby power consumption control circuit of the present invention, the second switch module includes a second relay;

[0012] The first contact of the second relay is connected to the power supply end of the outdoor controller, the second contact of the second relay is connected to the first power supply end of the outdoor module, the third contact of the second relay is connected to the signal transmission end of the outdoor module, the control coil of the second relay is connected to the outdoor controller, and when the control coil of the second relay is in a power-off state, the first contact of the second relay is conducted with the third contact of the second relay.

[0013] Preferably, in the low standby power consumption control circuit of the present invention, the control circuit further includes a rectification circuit and a charging circuit;

[0014] The first input end of the rectification circuit is connected to the first contact of the second relay, the second input end of the rectification circuit is connected to the second power supply end of the outdoor module, and the output end of the rectification circuit is connected to the outdoor controller through the charging circuit.

[0015] Preferably, in the low standby power consumption control circuit of the present invention, the rectification circuit includes a rectifier bridge;

[0016] The first end of the rectifier bridge is connected to the first contact of the second relay, the second end of the rectifier bridge is connected to the second power supply end of the outdoor module, the third end of the rectifier bridge is connected to the first end of the charging circuit, and the fourth end of the rectifier bridge is grounded.

[0017] Preferably, in the low standby power consumption control circuit of the present invention, the charging circuit includes a charging capacitor;

[0018] The first end of the charging capacitor is connected to the output end of the rectification circuit and the outdoor controller, and the second end of the charging capacitor is grounded.

[0019] Preferably, in the low standby power consumption control circuit of the present invention, the control circuit further includes at least one of a first protection circuit, a second protection circuit, and a third protection circuit;

[0020] The first end of the first protection circuit is connected to the communication circuit of the indoor module, and the second end of the first protection circuit is connected to the signal transmission end of the indoor module;

[0021] The first end of the second protection circuit is connected to the signal transmission end of the outdoor module, and the second end of the second protection circuit is connected to the third contact of the second relay;

[0022] The first end of the third protection circuit is connected to the signal transmission end of the outdoor module, and the second end of the third protection circuit is connected to the communication circuit of the outdoor module.

[0023] Preferably, in the low standby power consumption control circuit of the present invention, the first protection circuit includes a first PTC thermistor; the first end of the first PTC thermistor is connected to the communication circuit of the indoor module, and the second end of the first PTC thermistor is connected to the signal transmission end of the indoor module; and / or

[0024] The second protection circuit includes a second PTC thermistor; the first end of the second PTC thermistor is connected to the signal transmission end of the outdoor module, and the second end of the second PTC thermistor is connected to the third contact of the second relay; and / or

[0025] The third protection circuit includes a third PTC thermistor; the first end of the third PTC thermistor is connected to the signal transmission end of the outdoor module, and the second end of the third PTC thermistor is connected to the communication circuit of the outdoor module.

[0026] Preferably, in the low standby power consumption control circuit of the present invention, the first power supply end of the indoor module is used to connect to the L end of the mains input, and the second power supply end of the indoor module is used to connect to the N end of the mains input.

[0027] The present invention also constructs an air conditioner device, including the low standby power consumption control circuit as described above.

[0028] Implementing a low standby power consumption control circuit and an air conditioner device of the present invention has the following beneficial effects: By simple circuit design, the requirements for circuit components are reduced, and then the hardware cost of the entire circuit is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0030] Figure 1 is a module schematic diagram of an embodiment of a low standby power consumption control circuit of the present invention;

[0031] Figure 2 is a circuit schematic diagram of an embodiment of a low standby power consumption control circuit of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific implementation manners of the present utility model will now be described in detail with reference to the accompanying drawings.

[0033] As Figure 1 shown, a first embodiment of the low standby power consumption control circuit of the present utility model is shown. Among them, the control circuit is applied to an air conditioning device. As Figure 1 shown, the control circuit includes an indoor module 100 and an outdoor module 200; the indoor module 100 includes an indoor controller 110 and a first switch module 130; the outdoor module 200 includes an outdoor controller 210 and a second switch module 230; the first power supply terminal 101 and the second power supply terminal 102 of the indoor module 100 are respectively connected to the first power supply terminal 201 and the second power supply terminal 202 of the outdoor module 200 and are used to connect to the mains input; the signal transmission terminal 103 of the indoor module 100 is connected to the signal transmission terminal 203 of the outdoor module 200 for realizing the communication signal transmission between the indoor module 100 and the outdoor module 200; the first switch module 130 is connected to the first power supply terminal 101 of the indoor module 100, the signal transmission terminal 103 of the indoor module 100, and the indoor controller 110 for receiving the control level of the indoor controller 110 to realize the conduction or cut-off between the first power supply terminal 101 of the indoor module 100 and the signal transmission terminal 103 of the indoor module 100; the second switch module 230 is connected to the first power supply terminal 201 of the outdoor module 200, the signal transmission terminal 203 of the outdoor module 200, and the outdoor controller 210 for receiving the control level of the outdoor controller 210 to switch the power supply terminal of the outdoor controller 210 to be conductive to the first power supply terminal 201 of the outdoor module 200 or the signal transmission terminal 203 of the outdoor module 200.

[0034] Specifically, in an air conditioning device, an indoor module 100 is used to control the operation of the indoor unit working circuit of the air conditioner, and an outdoor module 200 is used to control the operation of the outdoor unit working circuit of the air conditioner. The first power supply terminal 101, the second power supply terminal 102, and the signal transmission terminal 103 of the indoor module 100 are respectively connected to the first power supply terminal 201, the second power supply terminal 202, and the signal transmission terminal 203 of the outdoor module 200 to form a current loop communication circuit. The first power supply terminal 101 and the second power supply terminal 102 of the indoor module 100 are connected to the mains input to provide operating voltage for the indoor module 100 and the outdoor module 200. The signal transmission terminal 103 of the indoor module 100 is connected to the signal transmission terminal 203 of the outdoor module 200 to transmit communication signals between the indoor module 100 and the outdoor module 200. The first switch module 130 is connected to the indoor controller 110 and conducts or turns off according to the output level of the indoor controller 110. The indoor controller 110 may include an MCU chip and its corresponding peripheral circuits. The first switch module 130 only needs to be directly or indirectly connected to the control level output pin of the MCU chip to confirm conduction or turning off according to the high or low level output by the MCU chip. The second switch module 230 is connected to the outdoor controller 210 and switches its conduction state according to the output level of the outdoor controller 210. The outdoor controller 210 may include an MCU chip and its corresponding peripheral circuits. The second switch module 230 only needs to be directly or indirectly connected to the control level output pin of the MCU chip to switch its conduction state according to the high or low level output by the MCU chip. When the control circuit is in standby, the indoor controller 110 controls the first switch module 130 to be in the off state, and the outdoor controller 210 outputs a control level according to the standby instruction to switch the state of the second switch module 230, so that the power supply terminal of the outdoor controller 210 is conducted to the signal transmission terminal 203 of the outdoor module 200, and the power supply of the outdoor module 200 is disconnected, and the outdoor module 200 is powered off and enters the standby state. When the outdoor module 200 needs to be woken up, the indoor controller 110 outputs a control level to control the first switch module 130 to conduct. When the first switch module 130 conducts, the mains input is input from the first power supply terminal 101 of the indoor module 100 to the signal transmission terminal 103 of the indoor module 100 to supply power to the power supply terminal of the outdoor controller 210 through the signal transmission terminal 203 of the outdoor module 200 and the second switch module 230. The outdoor controller 210 starts to power on and work, outputs a control level to control the second switch module 230 to switch its conduction state, so that the first power supply terminal 201 of the outdoor module 200 is conducted to the power supply terminal of the outdoor controller 210, and the outdoor controller 210 is powered on and works normally. At the same time, the indoor controller 110 outputs a control level to switch the first switch module 130 to off, and the signal transmission terminal 103 of the indoor controller 110 enters the normal communication signal transmission process, and the entire indoor-outdoor communication resumes normal.

[0035] Such asFigure 2 As shown, in one embodiment, the first power supply terminal 101 of the indoor module 100 is used to connect to the L terminal of the mains input, and the second power supply terminal 102 of the indoor module 100 is used to connect to the N terminal of the mains input. That is, the L terminal of the mains input can be used to supply power to the indoor controller 110 through the signal transmission terminal 103 of the indoor module 100 and the signal transmission terminal 103 of the outdoor module 200 via the first switch module 130 and the second switch module 230, enabling the outdoor module 200 to end standby and enter the power-on working state. Specifically, the first power supply terminal 101 of the indoor module 100 corresponds to the power connection terminal L1, the second power supply terminal 102 of the indoor module 100 corresponds to the power connection terminal N1, and the signal transmission terminal 103 of the indoor module 100 corresponds to the signal line connection terminal S1. The first power supply terminal 201 of the outdoor module 200 corresponds to the power connection terminal L2, the second power supply terminal 202 of the outdoor module 200 corresponds to the power connection terminal N2, and the signal transmission terminal 203 of the outdoor module 200 corresponds to the signal line connection terminal S2.

[0036] In one embodiment, the first switch module 130 includes a first relay; the first contact of the first relay is connected to the signal transmission terminal 103 of the indoor module 100, the second contact of the first relay is connected to the first power supply terminal 101 of the indoor module 100, and the control coil of the first relay is connected to the indoor controller 110. As Figure 2 shown, the first switch module 130 is composed of the relay RLY1 (corresponding to the first relay). The first contact and the second contact of the relay RLY1 are respectively connected to the first power supply terminal 101 and the signal transmission terminal 103 of the indoor module 100. The control coil of the relay RLY1 is connected to the indoor controller 110. The control coil of the relay RLY1 is powered on or off according to the control level of the indoor controller 110, thereby controlling the conduction or disconnection between the first power supply terminal 101 and the signal transmission terminal 103 of the indoor module 100. In one embodiment, the relay RLY1 can be a normally open relay, that is, when the control coil of the relay RLY1 is powered off, the first contact and the second contact of the relay RLY1 are disconnected, the first power supply terminal 101 and the signal transmission terminal 103 of the indoor module 100 are disconnected, and the signal transmission terminal 103 of the indoor module 100 is used for the communication signal transmission between the communication circuits 120. When the control coil of the relay RLY1 is powered on, the first contact and the second contact of the relay RLY1 are conducted, the first power supply terminal 101 and the signal transmission terminal 103 of the indoor module 100 are conducted, and the signal transmission terminal 103 of the indoor module 100 is used for the power supply transmission of the first power supply terminal 101 of the indoor module 100.

[0037] In one embodiment, the second switch module 230 includes a second relay; a first contact of the second relay is connected to a power supply terminal of the outdoor controller 210, a second contact of the second relay is connected to a first power supply terminal 201 of the outdoor module 200, a third contact of the second relay is connected to a signal transmission terminal 203 of the outdoor module 200, a control coil of the second relay is connected to the outdoor controller 210, and when the control coil of the second relay is in a power-off state, the first contact of the second relay is conducted with the third contact of the second relay. As Figure 2 shown, the second switch module 230 is composed of a relay RLY2 (corresponding to the second relay). The relay RLY2 is a single-pole double-throw relay. The first contact of the relay RLY2, i.e., the common contact, is connected to the power supply terminal of the outdoor controller 210, and the other two switching contacts, i.e., the second contact and the third contact, are respectively connected to the first power supply terminal 201 of the outdoor module 200 and the signal transmission terminal 203 of the outdoor module 200. The control coil of the relay RLY2 is connected to the outdoor controller 210. The control coil of the relay RLY2 is powered on or off according to the control level of the outdoor controller 210, and then realizes the conduction of one of the first power supply terminal 201 of the outdoor module 200 and the signal transmission terminal 203 of the outdoor module 200 with the power supply terminal of the outdoor controller 210. When the control coil of the relay RLY2 is powered off, the first contact and the third contact of the relay RLY2 are conducted, and the power supply terminal of the outdoor controller 210 is conducted with the signal transmission terminal 203 of the outdoor module 200. The signal transmission terminal 203 of the outdoor module 200 is used for power supply transmission of the first power supply terminal 101 of the indoor module 100, that is, the power supply terminal of the outdoor controller 210 supplies power through the signal transmission terminal 203 of the outdoor module 200. When the control coil of the relay RLY2 is powered on, the first contact and the second contact of the relay RLY2 are conducted, and the power supply terminal of the outdoor controller 210 is conducted with the first power supply terminal 201 of the outdoor module 200. The signal transmission terminal 203 of the outdoor module 200 is used for the transmission of communication signals, and the power supply terminal of the outdoor controller 210 supplies power through the first power supply terminal 201 of the outdoor module 200. It can also be understood that the first contact of the relay RLY2 is the common terminal of the relay RLY2, the third contact of the relay RLY2 is the normally closed contact of the relay RLY2, and the second contact of the relay RLY2 is the normally open contact of the relay RLY2.

[0038] In one embodiment, the control circuit further includes a rectification circuit 251 and a charging circuit 252; a first input terminal of the rectification circuit 251 is connected to the first contact of the second relay, a second input terminal of the rectification circuit 251 is connected to a second power supply terminal 202 of the outdoor module 200, and an output terminal of the rectification circuit 251 is connected to the outdoor controller 210 through the charging circuit 252. As Figure 2As shown, a rectifier circuit 251 and a charging circuit 252 are further provided between the relay RLY2 and the power supply terminal of the outdoor controller 210. The rectifier circuit 251 is used to rectify the power supply of the outdoor controller 210, and the charging circuit 252 is used for circuit protection, such as preventing surges generated during power supply from damaging the circuit.

[0039] Further, the rectifier circuit 251 includes a rectifier bridge; the first end of the rectifier bridge is connected to the first contact of the second relay, the second end of the rectifier bridge is connected to the second power supply terminal 202 of the outdoor module 200, the third end of the rectifier bridge is connected to the first end of the charging circuit 252, and the fourth end of the rectifier bridge is grounded. If Figure 2 As shown, the rectifier circuit 251 includes a rectifier bridge DG1. The first input terminal of the rectifier bridge DG1 is connected to the first contact of the relay RLY2, and the second input terminal of the rectifier bridge DG2 is connected to the second power supply terminal 202 of the outdoor module 200. The output terminal of the rectifier bridge DG2 is connected to the power supply terminal of the outdoor controller 210 through the charging circuit 252 to realize the power supply to the outdoor controller 210.

[0040] In an embodiment, the charging circuit 252 includes a charging capacitor; the first end of the charging capacitor is connected to the output terminal of the rectifier circuit 251 and the power supply terminal of the outdoor controller 210, and the second end of the charging capacitor is grounded. As Figure 2 shown, the charging circuit 252 may include a charging capacitor E1. The first end of the charging capacitor E1 is connected to the first output terminal of the rectifier bridge DG1 and the power supply terminal of the outdoor controller 210, and the second end of the charging capacitor E1 is grounded to the second output terminal of the rectifying bridge DG1. The charging capacitor E1 is used to prevent the output of the rectifier bridge DG1 from being too large and damaging the outdoor controller 210.

[0041] Optionally, the control circuit further includes at least one of a first protection circuit 141, a second protection circuit 241, and a third protection circuit 242; the first end of the first protection circuit 141 is connected to the communication circuit 120 of the indoor module 100, and the second end of the first protection circuit 141 is connected to the signal transmission terminal 103 of the indoor module 100; the first end of the second protection circuit 241 is connected to the signal transmission terminal 203 of the outdoor module 200, and the second end of the second protection circuit 241 is connected to the third contact of the second relay; the first end of the third protection circuit 242 is connected to the signal transmission terminal 203 of the outdoor module 200, and the second end of the third protection circuit 242 is connected to the communication circuit 220 of the outdoor module 200. As Figure 2As shown, a first protection circuit 141 can be provided between the communication circuit 120 of the indoor module 100 and the signal transmission terminal 103 of the indoor module 100, for preventing damage to the communication circuit 120 of the indoor module 100 caused by power input when the first power supply terminal 101 of the indoor module 100 is electrically connected to the signal transmission terminal 103 of the indoor module 100. A second protection circuit 241 can also be provided between the signal transmission terminal 203 of the outdoor module 200 and the relay RLY2, for preventing damage to the outdoor module 200 caused by power input when the signal transmission terminal 203 of the outdoor module 200 is a power supply input. A third protection circuit 242 can also be provided between the signal transmission terminal 203 of the outdoor module 200 and the communication circuit 220 of the outdoor module 200, for preventing damage to the communication circuit 220 of the outdoor module 200 caused by power input when the signal transmission terminal 203 of the outdoor module 200 is a power supply input.

[0042] In one embodiment, the first protection circuit 141 includes a first PTC thermistor; a first end of the first PTC thermistor is connected to the communication circuit 120 of the indoor module 100, and a second end of the first PTC thermistor is connected to the signal transmission terminal 103 of the indoor module 100. As Figure 2 shown, the first protection circuit 141 can include a thermistor PTC1 (corresponding to the first PTC thermistor), and the protection of the communication circuit 120 of the indoor module 100 is realized through the thermistor PTC1.

[0043] In one embodiment, the second protection circuit 241 includes a second PTC thermistor; a first end of the second PTC thermistor is connected to the signal transmission terminal 203 of the outdoor module 200, and a second end of the second PTC thermistor is connected to a third contact of the second relay. As Figure 2 shown, the second protection circuit 241 can include a thermistor PTC2 (corresponding to the second PTC thermistor), and the protection of the outdoor module 200 is realized through the thermistor PTC2.

[0044] In one embodiment, the third protection circuit 242 includes a third PTC thermistor; a first end of the third PTC thermistor is connected to the signal transmission terminal 203 of the outdoor module 200, and a second end of the third PTC thermistor is connected to the communication circuit 220 of the outdoor module 200. As Figure 2 shown, the third protection circuit 242 can include a thermistor PTC3 (corresponding to the third PTC thermistor), and the protection of the communication circuit 220 of the outdoor module 200 is realized through the thermistor PTC3.

[0045] In addition, an embodiment of the present invention provides an air conditioning device, in which the above low standby power consumption control circuit is provided in the air conditioning device to realize the communication and control process between the indoor unit and the outdoor unit. The standby power consumption of the entire air conditioning device is reduced.

[0046] It can be understood that the above embodiments only represent the preferred embodiments of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, the above technical features can be freely combined, and several deformations and improvements can also be made, which all fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present utility model shall fall within the scope covered by the claims of the present utility model.

Claims

1. A low standby power consumption control circuit, characterized in that, Applied to an air-conditioning device, the control circuit includes an indoor module and an outdoor module; the indoor module includes an indoor controller and a first switch module; the outdoor module includes an outdoor controller and a second switch module; The first power supply terminal and the second power supply terminal of the indoor module are respectively connected to the first power supply terminal and the second power supply terminal of the outdoor module, and are used for connecting to the mains input; The signal transmission terminal of the indoor module is connected to the signal transmission terminal of the outdoor module, and is used for realizing the communication signal transmission between the indoor module and the outdoor module; The first switch module is connected to the first power supply terminal of the indoor module, the signal transmission terminal of the indoor module and the indoor controller, and is used for receiving the control level of the indoor controller to realize the conduction or cut-off between the first power supply terminal of the indoor module and the signal transmission terminal of the indoor module; The second switch module is connected to the first power supply terminal of the outdoor module, the signal transmission terminal of the outdoor module and the outdoor controller, and is used for receiving the control level of the outdoor controller to switch the power supply terminal of the outdoor controller to conduct with the first power supply terminal or the signal transmission terminal of the outdoor module.

2. The low standby power consumption control circuit according to claim 1, wherein The first switch module includes a first relay; The first contact of the first relay is connected to the signal transmission terminal of the indoor module, the second contact of the first relay is connected to the first power supply terminal of the indoor module, and the control coil of the first relay is connected to the indoor controller.

3. The low standby power consumption control circuit according to claim 1, characterized in that The second switch module includes a second relay; The first contact of the second relay is connected to the power supply terminal of the outdoor controller, the second contact of the second relay is connected to the first power supply terminal of the outdoor module, the third contact of the second relay is connected to the signal transmission terminal of the outdoor module, the control coil of the second relay is connected to the outdoor controller, and when the control coil of the second relay is in a power-off state, the first contact of the second relay is conducted with the third contact of the second relay.

4. The low standby power consumption control circuit according to claim 3, wherein The control circuit further includes a rectification circuit and a charging circuit; The first input terminal of the rectification circuit is connected to the first contact of the second relay, the second input terminal of the rectification circuit is connected to the second power supply terminal of the outdoor module, and the output terminal of the rectification circuit is connected to the outdoor controller through the charging circuit.

5. The low standby power consumption control circuit according to claim 4, wherein The rectification circuit includes a rectifier bridge; The first end of the rectifier bridge is connected to the first contact of the second relay, the second end of the rectifier bridge is connected to the second power supply terminal of the outdoor module, the third end of the rectifier bridge is connected to the first end of the charging circuit, and the fourth end of the rectifier bridge is grounded.

6. The low standby power consumption control circuit according to claim 4, wherein, The charging circuit includes a charging capacitor; The first end of the charging capacitor is connected to the output terminal of the rectification circuit and the outdoor controller, and the second end of the charging capacitor is grounded.

7. The low standby power consumption control circuit according to claim 3, characterized in that, The control circuit further includes at least one of a first protection circuit, a second protection circuit and a third protection circuit; The first end of the first protection circuit is connected to the communication circuit of the indoor module, and the second end of the first protection circuit is connected to the signal transmission terminal of the indoor module; The first end of the second protection circuit is connected to the signal transmission end of the outdoor module, and the second end of the second protection circuit is connected to the third contact of the second relay; The first end of the third protection circuit is connected to the signal transmission end of the outdoor module, and the second end of the third protection circuit is connected to the communication circuit of the outdoor module.

8. The low standby power consumption control circuit according to claim 7, wherein The first protection circuit includes a first PTC thermistor; the first end of the first PTC thermistor is connected to the communication circuit of the indoor module, and the second end of the first PTC thermistor is connected to the signal transmission end of the indoor module; and / or The second protection circuit includes a second PTC thermistor; the first end of the second PTC thermistor is connected to the signal transmission end of the outdoor module, and the second end of the second PTC thermistor is connected to the third contact of the second relay; and / or The third protection circuit includes a third PTC thermistor; the first end of the third PTC thermistor is connected to the signal transmission end of the outdoor module, and the second end of the third PTC thermistor is connected to the communication circuit of the outdoor module.

9. The low standby power consumption control circuit according to claim 1, wherein The first power supply terminal of the indoor module is used to connect to the L terminal of the mains input, and the second power supply terminal of the indoor module is used to connect to the N terminal of the mains input.

10. An air conditioning device, characterized in that, Comprising the low standby power consumption control circuit according to any one of claims 1 to 9.

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