Electric control assembly and refrigeration equipment

Abstract

The utility model discloses an electric control assembly and refrigeration equipment, and relates to the technical field of refrigeration equipment, the electric control assembly comprises an indoor unit power supply circuit, an outdoor unit power supply circuit, an indoor unit controller and an outdoor unit controller, the indoor unit controller is used for outputting a power-on / power-off signal to the outdoor unit power supply circuit through the indoor unit power supply circuit; the outdoor unit power supply circuit is used for switching on the first power supply loop when receiving the starting-up signal; when the power-off signal is received, the power-off signal is output; the outdoor unit controller is used for outputting a power supply control signal when the first power supply loop is switched on so as to control the outdoor unit power supply circuit to switch on the second power supply loop; and when a shutdown signal is received, the outdoor unit power supply circuit is controlled to disconnect the second power supply loop. The standby power consumption of the refrigeration equipment is reduced, and the cost and the assembly complexity are reduced.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and in particular to an electronic control component and refrigeration equipment. Background Technology

[0002] Currently, due to increasing emphasis on environmental protection, more and more products are being developed with low-power standby requirements. For example, air conditioners typically consist of an indoor unit and an outdoor unit. For high-power air conditioners, the outdoor unit usually supplies power to the indoor unit. When designing an air conditioner for low-power standby, a common approach is for the indoor unit to provide a strong electrical signal to control the outdoor unit's AC contactor, cutting off power to the outdoor unit's electrical control system and thus completely de-energizing it, thereby reducing its standby power consumption. This method requires an additional control line between the indoor and outdoor units, allowing the indoor unit to control the outdoor unit's power supply, which is inconvenient to install and costly. Utility Model Content

[0003] The main purpose of this utility model is to provide an electronic control component and a refrigeration device, which aims to reduce the standby power consumption of the refrigeration device, as well as reduce costs and assembly complexity.

[0004] To achieve the above objectives, this utility model proposes an electronic control component, which includes:

[0005] Indoor unit power supply circuit;

[0006] The outdoor unit power supply circuit is communicatively connected to the indoor unit power supply circuit, and the outdoor unit power supply circuit includes a first power supply circuit and a second power supply circuit.

[0007] The indoor unit controller is electrically connected to the controlled terminal of the indoor unit power circuit; the indoor unit controller is used to output a power-on / power-off signal to the outdoor unit power circuit via the indoor unit power circuit.

[0008] The outdoor unit power supply circuit is used to connect the first power supply circuit when a power-on signal is received; and to output the power-off signal when a power-off signal is received.

[0009] The outdoor unit controller is electrically connected to the controlled terminal of the outdoor unit power supply circuit;

[0010] The outdoor unit controller is configured to output a power supply control signal when the first power supply circuit is connected, so as to control the outdoor unit power circuit to connect the second power supply circuit; and to control the outdoor unit power circuit to disconnect the second power supply circuit when the shutdown signal is received.

[0011] In one embodiment, the outdoor unit power supply circuit includes:

[0012] The power input terminal is used to connect the power supply voltage.

[0013] The power output terminal is used to connect the load.

[0014] An outdoor unit communication circuit, wherein the outdoor unit communication circuit has a communication terminal for connecting to the indoor unit controller;

[0015] A power supply start-up circuit is connected in series between the power input terminal and the power output terminal. The controlled terminal of the power supply start-up circuit is electrically connected to the outdoor unit communication circuit. It is used to receive the start-up signal output by the indoor unit through the communication terminal of the outdoor unit communication circuit, and to conduct the path between the power input terminal and the power output terminal according to the start-up signal, so as to connect the first power supply circuit of the outdoor unit controller.

[0016] A power supply switch circuit is connected in series between the power input terminal and the power output terminal. The controlled terminal of the power supply switch circuit is electrically connected to the outdoor unit controller. Based on the power supply control signal output by the outdoor unit controller, the power supply switch circuit turns on / off the path between the power input terminal and the power output terminal to turn on / off the second power supply circuit of the outdoor unit controller.

[0017] In one embodiment, the power output terminal includes a first power supply terminal and a second power supply terminal. The first power supply terminal is electrically connected to the power supply start-up circuit and the outdoor unit controller, respectively, and the second power supply terminal is electrically connected to the outdoor unit controller and the load, respectively.

[0018] The power supply start-up circuit is used to connect the power input terminal and the first power supply terminal according to the power-on signal, so as to connect the first power supply circuit of the outdoor unit controller.

[0019] The power supply switch circuit is used to turn on / off the path between the power input terminal and the second power supply terminal according to the power supply control signal, so as to turn on / off the second power supply circuit of the outdoor unit controller.

[0020] In one embodiment, the power supply startup circuit includes:

[0021] A first switch, comprising a first controlled terminal, a first terminal, a second terminal, and a common terminal; the first controlled terminal is electrically connected to the outdoor unit controller, the common terminal of the first switch is connected to the first terminal of the indoor unit power circuit, and the first terminal of the first switch is connected to the second terminal of the indoor unit power circuit;

[0022] The second switch includes a second controlled terminal, a third terminal, and a fourth terminal; the second controlled terminal is electrically connected to the indoor unit controller, the third terminal is connected to the power input terminal, and the fourth terminal is connected to the first power supply terminal; wherein...

[0023] The second switch is used to connect the first power supply circuit of the outdoor unit controller when a power-on signal is received, provided that the first switch is turned on.

[0024] The first switch is used to open when a shutdown control signal is received from the outdoor unit controller, so as to control the second switch to open and stop receiving communication signals from the indoor unit power circuit.

[0025] In one embodiment, the power supply switching circuit includes:

[0026] The third switch includes a third controlled terminal, a fifth terminal, and a sixth terminal. The third controlled terminal is electrically connected to the outdoor unit controller, the fifth terminal is electrically connected to the power input terminal, and the sixth terminal is electrically connected to the second power supply terminal.

[0027] The third switch is used to turn on when a shutdown control signal is received from the outdoor unit controller, so as to connect the second power supply circuit of the outdoor unit controller.

[0028] In one embodiment, the outdoor unit communication circuit includes:

[0029] The first optocoupler includes a first phototransistor and a first light-emitting diode. The emitter of the first phototransistor is connected to the signal line, and the anode of the first light-emitting diode is connected to the input voltage terminal.

[0030] The cathode of the first light-emitting diode is electrically connected to the collector of the first transistor; the emitter of the first transistor is grounded, and the base of the first transistor is the receiving terminal.

[0031] The second optocoupler includes a second phototransistor and a second light-emitting diode. The collector of the second phototransistor is connected to the input voltage terminal, the emitter of the second phototransistor is the internal transmitting terminal, and the anode of the second light-emitting diode is connected to the neutral line. The cathode of the second light-emitting diode is connected to the collector of the first phototransistor.

[0032] In one embodiment, the indoor unit power supply circuit includes:

[0033] An indoor unit communication circuit, wherein the controlled terminal of the indoor unit communication circuit is electrically connected to the indoor unit controller, and the indoor unit communication circuit has a communication terminal for connecting to the outdoor unit power supply circuit;

[0034] The indoor unit controller is used to output the power-on signal to the outdoor unit power circuit via the communication terminal, so that the outdoor unit power circuit connects to the first power supply circuit.

[0035] In one embodiment, the in-unit communication circuit includes:

[0036] The third optocoupler includes a third phototransistor and a third light-emitting diode. The emitter of the third phototransistor is the second internal transmitting terminal, the collector of the third phototransistor is connected to the input voltage terminal, and the anode of the third light-emitting diode is connected to the signal line.

[0037] The fourth optocoupler includes a fourth phototransistor and a fourth light-emitting diode. The collector of the fourth phototransistor is connected to the cathode of the third light-emitting diode, the emitter of the fourth phototransistor is connected to the live wire and the neutral wire, and the anode of the fourth light-emitting diode is connected to the input voltage terminal.

[0038] The cathode of the fourth light-emitting diode is electrically connected to the collector of the second transistor; the emitter of the second transistor is grounded, and the base of the second transistor is the second internal receiving terminal.

[0039] This utility model also proposes a refrigeration device, which includes the above-mentioned electronic control components; the refrigeration device also includes an outdoor unit electronic control board and an indoor unit electronic control board;

[0040] The outdoor unit power supply circuit and outdoor unit controller in the electrical control assembly are located on the outdoor unit electrical control board;

[0041] The indoor unit power supply circuit and indoor unit controller in the electrical control components are located on the indoor unit electrical control board.

[0042] In one embodiment, the outdoor unit control board includes a first neutral wire power supply terminal, a first live wire power supply terminal, and a first signal line power supply terminal; the indoor unit control board includes a second neutral wire power supply terminal, a second live wire power supply terminal, and a second signal line power supply terminal.

[0043] The first neutral power supply terminal is electrically connected to the second neutral power supply terminal, the first live power supply terminal is electrically connected to the second live power supply terminal, and the first signal line power supply terminal is electrically connected to the second signal line power supply terminal.

[0044] This utility model proposes an electronic control component, including an indoor unit power supply circuit, an outdoor unit power supply circuit, an indoor unit controller, and an outdoor unit controller. The outdoor unit power supply circuit is communicatively connected to the indoor unit power supply circuit, and the outdoor unit power supply circuit includes a first power supply circuit and a second power supply circuit. The indoor unit controller is electrically connected to the controlled end of the indoor unit power supply circuit. The indoor unit controller is used to output a power-on / power-off signal to the outdoor unit power supply circuit via the indoor unit power supply circuit. The outdoor unit power supply circuit is used to connect the first power supply circuit when it receives a power-on signal, and to output a power-off signal when it receives a power-off signal. The outdoor unit controller is electrically connected to the controlled end of the outdoor unit power supply circuit. The outdoor unit controller is used to output a power supply control signal to control the outdoor unit power supply circuit to connect the second power supply circuit when the first power supply circuit is connected, and to control the outdoor unit power supply circuit to disconnect the second power supply circuit when it receives the power-off signal.

[0045] This invention establishes separate power supply circuits for the outdoor unit and the indoor unit. Upon receiving a power-on signal, the first power supply circuit of the outdoor unit controller is activated, powering the outdoor unit controller and initiating operation. This activates the outdoor unit power supply circuit, providing a second power supply circuit to the outdoor unit controller. Conversely, upon receiving a power-off signal from the indoor unit controller, the outdoor unit power supply circuit disconnects the second power supply circuit to the outdoor unit controller.

[0046] In practical applications, there is no need to set up a dedicated control line and an outdoor unit AC contactor. Furthermore, the outdoor unit controller can control the power supply of the outdoor unit controller based on the working status of the control power supply switch circuit of the indoor unit controller. In standby mode, the second power supply circuit of the outdoor unit controller is disconnected, reducing the standby power consumption of the outdoor unit, as well as reducing costs and assembly complexity. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of a circuit module of an embodiment of the electronic control component of this utility model;

[0049] Figure 2 A schematic diagram of a circuit module of another embodiment of the electronic control component of this utility model;

[0050] Figure 3 This is a circuit module schematic diagram of another embodiment of the electronic control component of this utility model;

[0051] Figure 4 This is a schematic diagram of a circuit module of another embodiment of the electronic control component of this utility model;

[0052] Figure 5 This is a circuit module schematic diagram of another embodiment of the electronic control component of this utility model;

[0053] Figure 6 This is a schematic diagram of a circuit module of an embodiment of the electronic control component of this utility model;

[0054] Figure 7 This is a schematic diagram of a circuit module of another embodiment of the electronic control component of this utility model;

[0055] Figure 8 This is a detailed circuit diagram of an embodiment of the refrigeration equipment of this utility model;

[0056] Figure 9 This is a circuit wiring diagram of an embodiment of an existing refrigeration device;

[0057] Figure 10 This is a circuit wiring diagram for another embodiment of the refrigeration equipment of this utility model.

[0058] Explanation of icon numbers:

[0059] 10. Power input terminal; 20. Power output terminal; 30. Outdoor unit communication circuit; 40. Power supply start-up circuit; 50. Power supply switch circuit; 21. First power supply terminal; 22. Second power supply terminal; 41. First switch; 42. Second switch; 100. Indoor unit power supply circuit; 200. Outdoor unit power supply circuit; 300. Indoor unit controller; 400. Outdoor unit controller; 110. Indoor unit communication circuit.

[0060] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0062] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0063] Currently, due to increasing emphasis on environmental protection, more and more products are being developed with low-power standby requirements. For example, air conditioners typically consist of an indoor unit and an outdoor unit. For high-power air conditioners, the outdoor unit usually supplies power to the indoor unit. When designing an air conditioner for low-power standby, a common approach is for the indoor unit to provide a strong electrical signal to control the outdoor unit's AC contactor, cutting off power to the outdoor unit's electrical control system and thus completely de-energizing it, thereby reducing its standby power consumption. This method requires an additional control line between the indoor and outdoor units, allowing the indoor unit to control the outdoor unit's power supply, which is inconvenient to install and costly.

[0064] refer to Figure 9 The existing circuit wiring diagram shows a W control signal line between the indoor and outdoor units, and an AC contactor KM1 needs to be installed on the outdoor unit. The indoor unit's W line controls the engagement and disengagement of the outdoor unit's AC contactor KM1, thus controlling whether the outdoor unit's electrical control device is energized. This approach involves installing a load and incurs high circuit design costs.

[0065] Therefore, refer to Figure 1 This utility model proposes an electronic control component, which includes:

[0066] Indoor unit power supply circuit 100;

[0067] The outdoor unit power supply circuit 200 is communicatively connected to the indoor unit power supply circuit 100. The outdoor unit power supply circuit 200 includes a first power supply circuit and a second power supply circuit.

[0068] The indoor unit controller 300 is electrically connected to the controlled terminal of the indoor unit power circuit 100; the indoor unit controller 300 is used to output the power-on / power-off signal output by the indoor unit power circuit 100 to the outdoor unit power circuit 200.

[0069] The outdoor unit power supply circuit 200 is used to connect the first power supply circuit when a power-on signal is received; and to output the power-off signal when a power-off signal is received.

[0070] The outdoor unit controller 400 is electrically connected to the controlled end of the outdoor unit power circuit 200;

[0071] The outdoor unit controller 400 is configured to output a power supply control signal when the first power supply circuit is connected, so as to control the outdoor unit power circuit 200 to connect the second power supply circuit; and to control the outdoor unit power circuit 200 to disconnect the second power supply circuit when the shutdown signal is received.

[0072] In this embodiment, both the indoor unit controller 300 and the outdoor unit controller 400 can be implemented using a main controller, such as an MCU, DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), PLC, or SOC (System On Chip).

[0073] Specifically, the outdoor unit power supply circuit 200 can be connected to the indoor unit power supply circuit 100 via a communication line. The outdoor unit power supply circuit 200 includes an outdoor unit communication circuit and an outdoor unit power supply circuit. The outdoor unit communication circuit is used to communicate with the indoor unit communication circuit of the indoor unit, and the outdoor unit power supply circuit provides a power supply loop for the outdoor unit controller 400. For example, when the indoor unit controller 300 receives a power-on signal, it outputs the power-on signal to the outdoor unit communication circuit of the outdoor unit power supply circuit 200 through the indoor unit power supply circuit 100, so that the outdoor unit power supply circuit connects the first power supply loop of the outdoor unit controller 400, thereby powering the outdoor unit controller 400. After the outdoor unit controller 400 is powered on, it outputs a power supply control signal to connect the second power supply loop of the outdoor unit power supply circuit and disconnect the first power supply loop. The second power supply loop then supplies power to the outdoor unit controller 400, so that the second power supply loop can be directly disconnected when the outdoor unit controller 400 receives a power-off signal. In standby mode, when the outdoor unit receives the corresponding standby signal through the outdoor unit communication circuit, the outdoor unit controller 400 can disconnect the second power supply circuit through the outdoor unit power supply circuit and directly cut off the power to the outdoor unit, thus realizing low power consumption control of the entire air conditioner.

[0074] It should be noted that after the first power supply circuit of the outdoor unit controller 400 is connected, the outdoor unit controller 400 receives power and begins to work, outputting a power supply control signal to control the outdoor unit power circuit 200 to connect the second power supply circuit and disconnect the first power supply circuit. At this time, the outdoor unit controller 400 can communicate with the indoor unit controller 300 through the outdoor unit communication circuit of the outdoor unit power circuit 200 and the indoor unit power circuit 100, and receive control commands from the indoor unit controller 300. The connection / disconnection of the first power supply circuit will not affect the normal power supply of the outdoor unit controller 400; that is, after the outdoor unit is working normally, the stable power supply of the outdoor unit controller 400 is provided by the second power supply circuit. When the outdoor unit controller 400 receives a standby signal or a shutdown signal from the indoor unit controller 300 through the outdoor unit communication circuit, it controls the outdoor unit power circuit 200 to stop working, that is, it controls the second power supply circuit of the outdoor unit controller 400 to disconnect, causing the outdoor unit controller 400 to stop working due to power failure. In this way, when the air conditioner is in standby mode, the outdoor unit is directly powered off, achieving low-power control. In addition, the power supply can be turned on and off through the existing wiring of the electronic control components, without the need to install additional wires to control the power supply of the outdoor unit.

[0075] This invention establishes an outdoor unit power supply circuit 200 and an indoor unit power supply circuit 100. Upon receiving a power-on signal, the outdoor unit controller 400 is powered on and begins operation, controlling the outdoor unit power supply circuit 200 to provide a second power supply circuit for the outdoor unit controller 400. Conversely, upon receiving a power-off signal from the indoor unit controller 300, the outdoor unit controller 400 controls the outdoor unit power supply circuit 200 to disconnect the second power supply circuit.

[0076] In practical applications, there is no need to set up a dedicated control line and an outdoor unit AC contactor. Furthermore, the outdoor unit controller 400 can control the power supply of the outdoor unit controller 400 to be turned on or off according to the working status of the control power supply switch circuit of the indoor unit controller 300. In standby mode, the second power supply circuit of the outdoor unit controller 400 is disconnected, which reduces the standby power consumption of the outdoor unit, as well as the cost and assembly complexity.

[0077] In one embodiment of this utility model, reference is made to Figure 2 The outdoor unit power supply circuit 200 includes:

[0078] Power input terminal 10 is used to connect the power supply voltage.

[0079] Power output terminal 20 is used to connect the load;

[0080] The outdoor unit communication circuit 30 has a communication terminal for connecting to the indoor unit controller 300;

[0081] A power supply start-up circuit 40 is connected in series between the power input terminal 10 and the power output terminal 20. The controlled terminal of the power supply start-up circuit 40 is electrically connected to the outdoor unit communication circuit 30. It is used to receive the start-up signal output by the indoor unit through the communication terminal of the outdoor unit communication circuit 30, and to conduct the path between the power input terminal 10 and the power output terminal 20 according to the start-up signal, so as to connect the first power supply circuit of the outdoor unit controller 400.

[0082] A power supply switch circuit 50 is connected in series between the power input terminal 10 and the power output terminal 20. The controlled terminal of the power supply switch circuit 50 is electrically connected to the outdoor unit controller 400. Based on the power supply control signal output by the outdoor unit controller 400, the power supply switch circuit 50 connects / disconnects the path between the power input terminal 10 and the power output terminal 20 to connect / disconnect the second power supply circuit of the outdoor unit controller 400.

[0083] In this embodiment, the outdoor unit communication circuit 30 can be implemented using a wireless communication module, such as a WIFI module, 4G / 5G module, Bluetooth module, etc., or a wired communication module, such as a CAN communication module, LIN communication module, RS485 communication module. The outdoor unit communication circuit 30 is used to communicate with the indoor unit controller 300. Both the indoor unit controller 300 and the outdoor unit controller 400 can be implemented using a main controller, such as an MCU, DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), PLC, SOC (System on Chip), etc. The power supply start circuit 40 and the power supply switch circuit 50 can both be implemented using contactors, relays, or other switching devices, or using transistors, MOSFETs, IGBTs, etc.

[0084] Specifically, the indoor unit controller 300 actively sends signals to the outdoor unit communication circuit 30, so that the outdoor unit controller 400 responds accordingly based on the signals received through the communication terminal of the outdoor unit communication circuit 30. That is, the indoor unit controller 300 receives user-triggered power-on or power-off commands and outputs corresponding communication signals (including but not limited to power-on or power-off signals) to the communication terminal of the outdoor unit communication circuit 30 based on the received power-on or power-off commands. After receiving the power-on signal, the power supply start-up circuit 40 connects the electrical path between the power input terminal 10 and the power output terminal 20 to connect the power supply circuit of the outdoor unit controller 400, enabling the outdoor unit controller 400 to receive power and start working. The outdoor unit controller 400 communicates with the indoor unit controller 300 through the outdoor unit communication circuit 30 to transmit communication signals, including the power-on signal. For example, when the indoor unit controller 300 receives a user-triggered power-on command, it outputs a power-on signal to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. This causes the power supply start-up circuit 40 to connect the first power supply circuit of the outdoor unit controller 400. At this time, the outdoor unit controller 400 is powered on and outputs a corresponding power-on control signal to control the power supply switch circuit 50 to open the path between the power input terminal 10 and the power output terminal 20, thereby connecting the second power supply circuit of the outdoor unit controller 400. After the outdoor unit controller 400 is powered on and operating normally, the stable power supply of the outdoor unit controller 400 is provided by the power supply switch circuit 50. When the indoor unit controller 300 receives a user-triggered power-off command, it outputs a power-off signal to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. This causes the outdoor unit controller 400 to receive the power-off signal and output a corresponding power-off control signal to control the power supply switch circuit 50 to disconnect the path between the power input terminal 10 and the power output terminal 20, thereby disconnecting the second power supply circuit of the outdoor unit controller 400. At this time, the outdoor unit communication circuit 30 also stops working. The outdoor unit controller 400 also stops working due to the power outage. The power supply control signals include power-on control signals and power-off control signals. Thus, when the air conditioner is in standby mode, the power to the outdoor unit's electronic control device is directly cut off, achieving low-power control of the entire air conditioner.

[0085] It should be noted that the power-on or power-off command can be a remote control signal output by the user using the remote control paired with the air conditioner, or a trigger signal output by the user pressing the power-on or power-off button on the indoor unit. When the air conditioner is in low-power standby mode, the indoor unit is not completely powered off, but rather in a low-energy consumption state. That is, it remains powered on so that it can quickly respond to the user's power-on request.

[0086] In practical applications, a power supply start-up circuit 40 is configured to activate the first power supply circuit of the outdoor unit controller 400 upon receiving a communication signal from the indoor unit controller 300. The outdoor unit controller 400's power supply terminal is then connected to a power source and operates upon receiving power. This circuit also controls the power supply switch circuit 50 to operate, providing a second power supply circuit for the outdoor unit controller 400. When the outdoor unit controller 400 receives a shutdown signal from the indoor unit controller 300, it outputs a shutdown control signal to control the power supply switch circuit 50 to disconnect the second power supply circuit of the outdoor unit controller 400. Thus, the power supply start-up circuit 40 controls the on / off state of the power supply to the outdoor unit controller 400 based on the presence or absence of the communication signal. (Refer to...) Figure 10 The circuit wiring diagram of this application shows that there is no need to set up control lines and outdoor unit AC contactors. Furthermore, the outdoor unit controller 400 can control the power supply of the outdoor unit controller 400 to be turned on / off according to the working state of the control power supply switch circuit 50 of the indoor unit controller 300. In standby mode, the second power supply circuit of the outdoor unit controller 400 is disconnected, reducing the standby power consumption of the outdoor unit, and reducing cost and assembly complexity.

[0087] In one embodiment, reference Figure 3 The power output terminal 20 includes a first power supply terminal 21 and a second power supply terminal 22. The first power supply terminal 21 is electrically connected to the power supply start-up circuit 40 and the outdoor unit controller 400, respectively. The second power supply terminal 22 is electrically connected to the outdoor unit controller 400 and the load, respectively.

[0088] The power supply start circuit 40 is used to connect the power input terminal 10 and the first power supply terminal 21 according to the power-on signal, so as to connect the first power supply circuit of the outdoor unit controller 400.

[0089] The power supply switch circuit 50 is used to turn on / off the path between the power input terminal 10 and the second power supply terminal 22 according to the power supply control signal, so as to turn on / off the second power supply circuit of the outdoor unit controller 400.

[0090] In this embodiment, the power supply start-up circuit 40 can be connected to the indoor unit communication circuit 110 of the indoor unit electronic control device via a communication line to detect the power-on or power-off signal sent by the indoor unit communication circuit 110 on the communication line. Based on the presence or absence of the communication signal, it connects or disconnects the power supply circuit of the outdoor unit controller 400 to supply or disconnect the power to the outdoor unit of the air conditioner. For example, when the air conditioner is in normal working condition, the power supply to the outdoor unit controller 400 is controlled according to the power-on signal output by the indoor unit controller 300 via the indoor unit communication circuit 110. In standby mode, there is no communication between the indoor and outdoor units. The indoor unit controller 300 is powered; for example, the indoor unit controller 300 outputs a low-level signal to disconnect the communication between the indoor and outdoor units. Therefore, the power supply start-up circuit 40 stops working, directly controlling the power disconnection of the outdoor unit. The outdoor unit controller is de-energized, and the entire unit is in a low-power state. Thus, low-power control of the entire air conditioner is achieved, and power supply can be turned on without the need for a separate control line to control the power supply to the outdoor unit.

[0091] It should be noted that the power-on or power-off signal usually alternates between high and low levels. The power supply start circuit 40 can control the power supply or power-off of the outdoor unit's electrical control device based on the presence or absence of the signal. That is, it can only detect a signal of one level, such as high level or low level. In this embodiment, the power supply start circuit 40 uses a high level signal as the power-on signal and connects the first power supply circuit. When a low level signal appears, the power supply start circuit 40 will disconnect the power supply circuit of the outdoor unit controller 400, so that the outdoor unit controller 400 cannot work due to power failure.

[0092] Specifically, when the indoor unit controller 300 receives a user-triggered power-on command, it outputs a power-on signal (communication signal) to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. The power supply start-up circuit 40 then connects the power input terminal 10 and the first power supply terminal 21 to activate the first power supply circuit of the outdoor unit controller 400. At this time, the outdoor unit controller 400 is powered on and outputs a corresponding power-on control signal to control the power supply switch circuit 50 to connect the power input terminal 10 and the second power supply terminal 22 to activate the second power supply circuit of the outdoor unit controller 400. After the outdoor unit controller 400 is powered on and operating normally, its stable power supply is provided by the power supply switch circuit 50. When the indoor unit controller 300 receives a user-triggered shutdown command, it outputs a shutdown signal to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. This causes the outdoor unit controller 400 to receive the shutdown signal and output a corresponding shutdown control signal, which controls the power supply switch circuit 50 to disconnect the path between the power input terminal 10 and the second power supply terminal 22, thus disconnecting the second power supply circuit of the outdoor unit controller 400. At this time, the outdoor unit communication circuit 30 also stops working. The outdoor unit controller 400 also stops working due to power failure. In this way, when the air conditioner is in standby mode, the power to the outdoor unit's electronic control device is directly cut off, achieving low-power control of the entire air conditioner.

[0093] By utilizing the existing communication lines to detect power-on and power-off commands, the system eliminates the need for additional control lines to manage the outdoor unit's power supply, simplifying the wiring and control logic of the air conditioning system. When the air conditioner needs to start, a communication signal (power-on signal) quickly wakes up the outdoor unit controller 400, which then controls the power supply switch circuit 50 to rapidly enter operating mode. In standby mode, the outdoor unit controller 400 is de-energized, reducing power consumption. In practical applications, both power-on and power-off are controlled by the indoor unit sending corresponding control signals to the outdoor unit, providing a unified operating interface for easy system maintenance and upgrades, and improving user convenience and experience.

[0094] In one embodiment, reference Figure 4 The power supply startup circuit 40 includes:

[0095] A first switch 41 includes a first controlled terminal, a first terminal, a second terminal, and a common terminal; the first controlled terminal is electrically connected to the outdoor unit controller 400, the common terminal of the first switch 41 is connected to the first terminal of the indoor unit power circuit 100, and the first terminal of the first switch 41 is connected to the second terminal of the indoor unit power circuit 100.

[0096] A second switch 42 includes a second controlled terminal, a third terminal, and a fourth terminal; the second controlled terminal is electrically connected to the indoor unit controller 300, the third terminal is connected to the power input terminal, and the fourth terminal is connected to the first power supply terminal; wherein...

[0097] The second switch 42 is used to connect the first power supply circuit of the outdoor unit controller 400 when a power-on signal is received, provided that the first switch 41 is turned on.

[0098] The first switch 41 is used to open when it receives a shutdown control signal output by the outdoor unit controller 400, so as to control the second switch 42 to open and stop receiving the communication signal output by the indoor unit power circuit 100.

[0099] In this embodiment, both the first switch 41 and the second switch 42 can be implemented using contactors, relays, or other switching devices, or using transistors, MOSFETs, or other switching transistors. In this embodiment, it is illustrated using relays as an example. The first controlled terminal includes a first controlled coil; the first terminal of the first switch 41 is a first normally closed contact, and the second terminal of the first switch 41 is a normally open contact. The first controlled coil is electrically connected to the controlled terminal of the first normally closed contact. The second controlled terminal includes a second controlled coil; the second terminal of the second switch 42 is a first normally open contact, and the second controlled coil is electrically connected to the controlled terminal of the first normally open contact.

[0100] The controlled end of the first controlled coil is electrically connected to the outdoor unit controller 400, the controlled end of the second controlled coil is electrically connected to the indoor unit controller 300, the first end of the first normally closed contact is electrically connected to the indoor unit controller, and the first normally open contact is connected in series between the power input terminal 10 and the first power supply terminal 21.

[0101] The second controlled coil is used to control the first normally open contact to close when it receives the power-on signal output by the indoor unit controller 300, so as to connect the first power supply circuit of the outdoor unit controller 400.

[0102] The first controlled coil is used to control the first normally closed contact to open and switch to the normally open contact when it receives the shutdown control signal output by the outdoor unit, so as to control the second controlled coil to stop receiving communication signals.

[0103] Optionally, the power supply switching circuit 50 includes:

[0104] The third switch includes a third controlled terminal, a fifth terminal, and a sixth terminal. The third controlled terminal is electrically connected to the outdoor unit controller 400, the fifth terminal is electrically connected to the power input terminal, and the sixth terminal is electrically connected to the second power supply terminal.

[0105] The third switch is used to turn on when it receives a shutdown control signal output by the outdoor unit controller 400, so as to connect the second power supply circuit of the outdoor unit controller 400.

[0106] In this embodiment, the third switch can be implemented using switching devices such as contactors and relays, or using switching transistors such as transistors and MOSFETs. Taking the example where both the first switch 41 and the second switch 42 are relays, the third controlled terminal includes a third controlled coil. The second terminal of the third switch is a second normally open contact. The third controlled coil is electrically connected to the controlled terminal of the second normally open contact. The controlled terminal of the third controlled coil is electrically connected to the outdoor unit controller 400. The second normally open contact is connected in series between the power input terminal 10 and the second power supply terminal 22.

[0107] The third controlled coil is used to control the first and second terminals of the third switch to be electrically connected when the start-up control signal output by the outdoor unit is received, that is, the second normally open contact is closed to connect the second power supply circuit of the outdoor unit controller 400.

[0108] In this embodiment, RY1 is the first switch 41, RY2 is the second switch 42, and RY3 is the third switch. RY1 is a single-pole double-throw switch. When contacts 3 and 4 are connected, they are normally closed contacts. When contacts 3 and 5 are connected, they are normally open contacts.

[0109] In accordance with the above embodiments, when the indoor unit controller 300 receives a power-on command triggered by the user, it outputs a power-on signal (communication signal) to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. At this time, the initial state of the first switch 41RY1 is that contact 3 (common terminal) and contact 4 (first terminal) are connected. The controlled coil of the second switch 42RY2 is energized, which controls the normally open contact of RY2 to close, and the relay RY2 is closed to conduct the path between the power input terminal 10 and the first power supply terminal 21, thereby connecting the first power supply circuit of the outdoor unit controller 400. The outdoor unit controller 400 is then energized and starts. After the outdoor unit controller 400 starts, it outputs a power supply control signal. In this embodiment, the outdoor unit controller 400 outputs two control signals sequentially: a power-on control signal (POWER ON) and a power-off control signal (STAND BY). This energizes the coil of the first switch 41RY1, causing control contacts 3 and 5 (the second terminal) to close. This de-energizes the controlled coil of the second switch 42RY2, thereby causing relay RY2 to open, disconnecting the path between the power input terminal 10 and the first power supply terminal 21, i.e., disconnecting the first power supply circuit of the outdoor unit controller 400. When the controlled coil of the third switch RY3 receives the control signal POWER ON, it controls the second normally open contact to close, connecting the path between the power input terminal 10 and the second power supply terminal 22, i.e., connecting the second power supply circuit of the outdoor unit controller 400. At this time, the outdoor unit is only powered by the third switch RY3, i.e., the second power supply circuit provides power, and communication between the indoor and outdoor units begins. When the indoor unit controller 300 receives a shutdown command triggered by the user, it outputs a shutdown signal (communication signal) to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. This enables the outdoor unit controller 400 to receive the shutdown signal and output a corresponding shutdown control signal. For example, it first shuts down the compressor, motor, and other loads, and then stops outputting the POWER ON control signal, so that the controlled coil of the third switch is de-energized and the control relay RY3 is disconnected. At this time, the outdoor unit power is disconnected, and the whole unit enters a low-power standby state.

[0110] It should be noted that when turning off the power to the outdoor unit, first turn off the compressor, fan motor, and other loads. This can avoid the inrush current that may be caused by a sudden power outage while the load is running, thus protecting the air conditioner. In addition, turning off the loads first and letting them stop running before disconnecting the power ensures a smooth transition of the air conditioner from the working state to the stopped state, reducing mechanical and electrical stress and extending its lifespan.

[0111] This application uses relays RY1, RY2, and RY3 to control the power supply, which can reduce the outdoor unit's power consumption in standby mode, thereby saving energy. Furthermore, as an independent component, the relays are relatively easy to replace and maintain. If a relay fails, it can be directly replaced, improving maintenance convenience. In addition, the relays ensure that the control circuit of the outdoor unit's power supply circuit 200 does not directly contact the load. This prevents faults in the control circuit from affecting the load, improving the safety and reliability of the air conditioner's operation.

[0112] In one embodiment of this application, reference is made to Figure 5 The outdoor unit communication circuit 30 includes:

[0113] The first optocoupler includes a first phototransistor and a first light-emitting diode. The emitter of the first phototransistor is connected to the signal line S, and the anode of the first light-emitting diode is connected to the input voltage terminal.

[0114] The cathode of the first light-emitting diode is electrically connected to the collector of the first transistor; the emitter of the first transistor is grounded, and the base of the first transistor is the receiving terminal.

[0115] The second optocoupler includes a second phototransistor and a second light-emitting diode. The collector of the second phototransistor is connected to the input voltage terminal, and the emitter of the second phototransistor is the internal transmitting terminal. The anode of the second light-emitting diode is connected to the neutral line N. The cathode of the second light-emitting diode is connected to the collector of the first phototransistor.

[0116] In this embodiment, the outdoor unit communication circuit 30 mainly consists of optocouplers IC252 and IC253 and transistor Q251. IC253 is the first optocoupler, IC252 is the second optocoupler, and Q251 is the first transistor. The base of the first transistor is the internal receiving terminal of the outdoor unit communication circuit 30, connected to the transmitting terminal TXD-outdoor of the outdoor unit controller 400. The emitter of the second phototransistor is the internal transmitting terminal of the outdoor unit communication circuit 30, connected to the receiving terminal RXD-outdoor of the outdoor unit controller 400. The outdoor unit communication circuit 30 also includes resistors R2517, R2518, R2510, and R2513. Furthermore, the outdoor unit communication circuit 30 also has a series resistor R2516 and a diode D254 connected in series, such as... Figure 8As shown, the anode of diode D254 is electrically connected to the first end of series resistor R2516, the cathode of diode D254 is electrically connected to the controlled coil of the second switch 42 in the power supply startup circuit 40, and the second end of series resistor R2516 is electrically connected to the emitter of the first phototransistor. The series resistor R2516 and diode D254 are connected in series to protect the components in the circuit when the communication line is connected incorrectly, and to improve the phenomenon of components being damaged due to excessive current.

[0117] Based on the above embodiments, this embodiment will be described using the example of the power supply start-up circuit 40 disconnecting the power supply circuit of the outdoor unit controller 400 when the communication signal is low. After power-on, the refrigeration equipment is in standby mode. The indoor unit controller 300 is powered, and the transmitting end TXD-indoor of the indoor unit controller 300 outputs a low-level signal. The power supply circuit of the outdoor unit controller 400 is disconnected, the outdoor unit controller is de-powered, and the whole unit is in a low-power state. When the indoor unit controller 300 receives a power-on command triggered by the user, it outputs a power-on signal (communication signal) to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. That is, the transmitting end TXD-indoor of the indoor unit controller 300 outputs a high-level signal to the outdoor unit communication circuit 30, the power supply circuit of the outdoor unit controller 400 is turned on, and the first power supply circuit of the outdoor unit controller 400 supplies power to the outdoor unit. At this time, the initial state of the first switch 41RY1 is that contacts 3 and 4 are closed. The controlled coil of the second switch 42RY2 is energized, controlling the normally open contact of RY2 to close, and the relay RY2 to close, thereby connecting the power input terminal 10 and the first power supply terminal 21, and connecting the first power supply circuit of the outdoor unit controller 400. The power voltage connected to the power input terminal 10 (power supply L) is input to the rectifier BR2 through Fuse1, the second switch 42RY2, and PTC801, energizing the outdoor unit controller 400 and starting it up. After the outdoor unit controller 400 starts up, it outputs power supply control signals, that is, the outdoor unit controller 400 outputs two control signals, POWER ON and STANDBY, in sequence. Thus, the coil of the first switch 41RY1 is energized, controlling contacts 3 and 5 to close, causing the controlled coil of the second switch 42RY2 to de-energize, thereby causing the relay RY2 to open, thereby disconnecting the path between the power input terminal 10 and the first power supply terminal 21, that is, disconnecting the first power supply circuit of the outdoor unit controller 400. When the controlled coil of the third switch RY3 receives the control signal POWER ON, it controls the second normally open contact to close, thereby connecting the power input terminal 10 and the second power supply terminal 22, i.e., connecting the second power supply circuit of the outdoor unit controller 400. At this time, the outdoor unit is powered only through the third switch RY3, with power supplied by the second power supply circuit, and the indoor and outdoor units begin communication. When the indoor unit controller 300 receives a shutdown command triggered by the user, it outputs a shutdown signal (communication signal) to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. For example, the transmitting terminal TXD-indoor of the indoor unit controller 300 outputs a low-level signal to the outdoor unit communication circuit 30, so that the outdoor unit controller 400 receives the shutdown signal and outputs a corresponding shutdown control signal. For example, it first shuts down the compressor, motor, and other loads, and then stops outputting the POWER ON control signal, so that the controlled coil of the third switch is de-energized, controlling the relay RY3 to open. At this time, the outdoor unit power is disconnected, and the whole unit enters a low-power standby state.

[0118] It should be noted that during communication between the indoor and outdoor units, the first transistor Q251 controls the first optocoupler IC253 to be turned on or off. When the indoor unit controller 300 sends a communication signal through the indoor unit communication circuit 110, the communication signal is output from the second optocoupler IC252 to the outdoor unit controller 400. When the indoor unit controller 300 receives a shutdown command, it will stop outputting the communication signal after outputting the shutdown signal, interrupting the communication between the indoor and outdoor units. At this time, the third switch RY3 in the power supply start-up circuit 40 is turned off, thereby disconnecting the power supply circuit of the outdoor unit controller 400. In this way, when the air conditioner is in standby mode, the indoor unit controller 300 can directly control the outdoor unit to cut off the power, realizing low-power control of the entire air conditioner.

[0119] Through the above settings, the power supply circuit of the outdoor unit can be directly controlled via the indoor unit controller 300, enabling the outdoor unit's power to be cut off in standby mode, saving the air conditioner's electricity and improving the user experience. Furthermore, protective measures are incorporated into the outdoor unit communication circuit 30, such as a series resistor R2516 and a diode D254, to protect the components in the circuit in case of incorrect communication line connections, thereby improving the stability and safety of the refrigeration equipment. Simultaneously, the outdoor unit communication circuit 30 uses optocouplers (first optocoupler and second optocoupler) for signal transmission, effectively isolating interference along the signal transmission path and ensuring the accuracy and reliability of the communication signal.

[0120] In one embodiment, reference Figure 6 The indoor unit power supply circuit 100 includes:

[0121] The indoor unit communication circuit 110 is electrically connected to the indoor unit controller 300, and the indoor unit communication circuit 110 has a communication terminal for connecting to the outdoor unit power supply circuit 200.

[0122] The indoor unit controller 300 is used to output the power-on signal to the outdoor unit power circuit 200 via the communication terminal, so that the outdoor unit power circuit 200 connects the first power supply circuit.

[0123] In this embodiment, the indoor communication circuit 110 can be implemented using a wireless communication module, such as a WIFI module, a 4G / 5G module, a Bluetooth module, etc., or using a wired communication module, such as a CAN communication module, a LIN communication module, an RS485 communication module.

[0124] In conjunction with the above embodiments, the indoor unit controller 300 is used to receive a power-on command or power-off command triggered by the user, and outputs a corresponding power-on signal or power-off signal to the communication terminal of the outdoor unit communication circuit 30, which is connected to the indoor unit communication circuit 110, based on the received power-on command or power-off command. This allows the outdoor unit controller 400 to connect its first power supply circuit and output a power-on control signal to connect its second power supply circuit when it receives a power-on signal, and to output a corresponding power-off control signal to disconnect its second power supply circuit when it receives a power-off signal. For example, the indoor unit controller 300 outputs a corresponding power-on signal to the outdoor unit communication circuit 30 based on the received power-on command, so that the power supply start-up circuit 40 connects the first power supply circuit of the outdoor unit controller 400, enabling the outdoor unit controller 400 to be powered on and start working. The outdoor unit controller 400 communicates with the indoor unit controller 300 through the outdoor unit communication circuit 30. The outdoor unit controller 400 outputs a corresponding power-on control signal to control the power supply switch circuit 50 to open the path between the power input terminal 10 and the power output terminal 20, thereby connecting the second power supply circuit of the outdoor unit controller 400. After the outdoor unit controller 400 is powered on and operating normally, the stable power supply to the outdoor unit controller 400 is provided by the power supply switch circuit 50. When the indoor unit controller 300 receives a user-triggered shutdown command, it outputs a shutdown signal to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. This causes the outdoor unit controller 400 to receive the shutdown signal and output a corresponding shutdown control signal, which controls the power supply switch circuit 50 to disconnect the path between the power input terminal 10 and the power output terminal 20, thus disconnecting the second power supply circuit of the outdoor unit controller 400. At this time, the outdoor unit communication circuit 30 also stops working. The outdoor unit controller 400 also stops working due to power failure. In this way, when the air conditioner is in standby mode, the power to the outdoor unit's electronic control device is directly cut off, achieving low-power control of the entire air conditioner.

[0125] The indoor unit communication circuit 110 enables the indoor unit controller 300 to directly control the power supply status of the outdoor unit's electrical control device, thereby cutting off the power supply to the outdoor unit when the air conditioner is in standby mode. In standby mode, the power supply to the outdoor unit is cut off, thus reducing unnecessary power consumption. The elimination of control lines and outdoor unit AC contactors reduces costs and assembly complexity.

[0126] In one embodiment, reference Figure 7 The internal communication circuit 110 includes:

[0127] The third optocoupler includes a third phototransistor and a third light-emitting diode. The emitter of the third phototransistor is the second internal transmitting terminal, the collector of the third phototransistor is connected to the input voltage terminal, and the anode of the third light-emitting diode is connected to the signal line.

[0128] The fourth optocoupler includes a fourth phototransistor and a fourth light-emitting diode. The collector of the fourth phototransistor is connected to the cathode of the third light-emitting diode, the emitter of the fourth phototransistor is connected to the live wire L and the neutral wire N, and the anode of the fourth light-emitting diode is connected to the input voltage terminal.

[0129] The cathode of the fourth light-emitting diode is electrically connected to the collector of the second transistor; the emitter of the second transistor is grounded, and the base of the second transistor is the second internal receiving terminal.

[0130] In this embodiment, the in-unit communication circuit 110 mainly consists of optocouplers IC250 and IC251 and transistor Q250. IC250 is the third optocoupler, IC251 is the fourth optocoupler, and Q250 is the second transistor. The in-unit communication circuit 110 also includes resistors R250, R251, R258, and R259. Furthermore, the in-unit communication circuit 110 also has a series resistor R2519 and a diode D250 connected in series, such as... Figure 7 As shown, the cathode of diode D250 is electrically connected to the first end of series resistor R2519, the cathode of diode D250 is electrically connected to the cathode of diode D254 in the outdoor unit communication circuit 30, and the second end of series resistor R2519 is electrically connected to the anode of the third light-emitting diode. The series resistor R2519 and diode D250 are connected in series to protect the components in the circuit when the communication line is connected incorrectly, and to improve the phenomenon of components being damaged due to excessive current.

[0131] Based on the above embodiments, this embodiment will be described using the example of the power supply start circuit 40 disconnecting the power supply circuit of the outdoor unit controller 400 when the power-on signal is low. After power-on, the refrigeration equipment is in standby mode, the indoor unit controller 300 is powered, and the transmitting end TXD-indoor of the indoor unit controller 300 outputs a low-level signal to the indoor unit communication circuit 110. At this time, the second transistor Q250 is cut off, the fourth optocoupler IC251 is not conducting, the second switch 42RU2 in the power supply start circuit 40 and the third switch RY3 in the power supply switch circuit 50 are in the open state, the power supply circuit of the outdoor unit controller 400 is disconnected, the outdoor unit controller is not powered, and the whole unit is in a low-power state. When the indoor unit controller 300 receives the power-on command triggered by the user, it outputs a power-on signal to the indoor unit communication circuit 110, and then outputs a power-on signal to the outdoor unit communication circuit 30. That is, the transmitting end TXD-indoor of the indoor unit controller 300 outputs a high-level signal to the indoor unit communication circuit 110, so that the power supply circuit of the outdoor unit controller 400 is turned on. For example, when the base of the second transistor Q250 is high, Q250 conducts, and the fourth optocoupler IC251 conducts. At this time, the normally closed contact of RY1, the control coil of RY2, R2519, D250, the third optocoupler IC250, the fourth optocoupler IC251, +24V(N), and 24VGND form a closed circuit, energizing the controlled coil of relay RY2 and closing the first normally open contact. The power supply voltage connected to power input terminal 10 (power supply L) is input to bridge rectifier BR2 through fuse Fuse1, the second switch 42RY2, and the thermistor PTC801 to be rectified into DC, energizing the outdoor unit controller 400, starting the outdoor unit controller 400, and the first power supply circuit of the outdoor unit controller 400 supplies power to the outdoor unit. When optocoupler IC250 conducts, the feedback signal received by the receiver terminal RXD-indoor of the indoor unit controller is high. After the outdoor unit controller 400 starts, it outputs power supply control signals, namely, it outputs two control signals, POWERON and STAND BY, in sequence. This energizes the controlled coil of the first switch 41RY1, causing control contacts 3 and 5 to close, thus de-energizing the controlled coil of the second switch 42(RY2). This, in turn, causes relay RY2 to open, disconnecting the path between the power input terminal 10 and the first power supply terminal 21, i.e., disconnecting the first power supply circuit of the outdoor unit controller 400. When the controlled coil of the third switch RY3 receives the control signal POWER ON, it controls the second normally open contact to close, thus connecting the path between the power input terminal 10 and the second power supply terminal 22, i.e., connecting the second power supply circuit of the outdoor unit controller 400.At this time, the outdoor unit is powered only through the third switch RY3, the third optocoupler IC250 is not conducting, and the feedback signal received by the indoor unit controller receiver through the indoor unit communication circuit 110 changes from a high-level signal to a low-level signal. That is, after the indoor unit controller 300 receives the feedback signal, the indoor unit and the outdoor unit begin to communicate. It should be noted that at this time, relays RY1 and RY2 are both open, and relay RY3 is closed, with power supplied by the second power supply circuit. When the indoor unit controller 300 receives a shutdown command triggered by the user, it outputs a shutdown signal (communication signal) to the outdoor unit communication circuit 30 via the indoor unit communication circuit 110 of the indoor unit power circuit 100. For example, the indoor unit controller 300's transmitting terminal TXD-indoor outputs a low-level signal to the outdoor unit communication circuit 30, so that the outdoor unit controller 400 receives the shutdown signal and outputs the corresponding shutdown control signal. For example, it first shuts down the compressor, motor, and other loads, and then stops outputting the POWER ON control signal, so that the controlled coil of the third switch RY3 is de-energized, and the control relay RY3 is disconnected. At this time, the outdoor unit power is disconnected, and the whole unit enters a low-power standby state. At this time, the indoor unit controller is powered on and is in a working state waiting to receive a power-on command or a shutdown command.

[0132] It should be noted that the indoor communication circuit 110 also includes a 24V DC power supply circuit composed of a Zener diode DZ250, a resistor R253, a diode D252, and an electrolytic capacitor E250. This DC power supply circuit provides DC power for the operation of the entire current loop communication loop.

[0133] By using optocouplers (including third and fourth optocouplers) and transistors, the signal transmission path between the indoor and outdoor units is effectively isolated, enhancing anti-interference capabilities and security. When the cooling equipment is in standby mode, the power supply status of the outdoor unit controller 400 can be precisely controlled by changing the control signal (from low level to high level and back to low level). This significantly reduces the standby power consumption of the cooling equipment.

[0134] This application also proposes a refrigeration device, which includes the aforementioned electronic control components.

[0135] The refrigeration equipment also includes an outdoor unit control board and an indoor unit control board;

[0136] The outdoor unit power supply circuit 200 and the outdoor unit controller 400 in the electrical control assembly are located on the outdoor unit electrical control board.

[0137] The indoor unit power supply circuit 100 and the indoor unit controller 300 in the electrical control components are located on the indoor unit electrical control board.

[0138] The first neutral power supply terminal is electrically connected to the second neutral power supply terminal, the first live power supply terminal is electrically connected to the second live power supply terminal, and the first signal line power supply terminal is electrically connected to the second signal line power supply terminal.

[0139] In this embodiment, the outdoor unit's electrical control board may further include protection circuits for the electrical components inside the outdoor unit, sensors for monitoring the outdoor unit's operating status, and drive circuits for driving the compressor. The indoor unit may further include a human-machine interface for user operation and a display module for displaying current device parameters (such as temperature and operating mode). These components on the outdoor and indoor unit electrical control boards work together to ensure the efficient operation of the refrigeration equipment and improve the user experience.

[0140] Optionally, the outdoor unit control board includes a first neutral power supply terminal, a first live power supply terminal, and a first signal line power supply terminal; the indoor unit control board includes a second neutral power supply terminal, a second live power supply terminal, and a second signal line power supply terminal.

[0141] Specifically, both the first neutral power supply terminal and the second neutral power supply terminal are connected to the neutral wire N of the power grid to form a current loop. The first neutral power supply terminal and the second neutral power supply terminal are connected by a wire. Both the first live power supply terminal and the second live power supply terminal are connected to the live wire L of the power grid to provide the main power input. The first live power supply terminal and the second live power supply terminal are connected by a wire. The first signal line power supply terminal and the second signal line power supply terminal are connected by a dedicated signal line S to ensure data transmission between the outdoor unit and the indoor unit.

[0142] It is worth noting that since the refrigeration equipment of this application includes the aforementioned electronic control components, the embodiments of the refrigeration equipment of this application include all the technical solutions of all embodiments of the aforementioned electronic control components, and the technical effects achieved are exactly the same, so they will not be repeated here.

[0143] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of the present utility model.

Claims

1. An electronic control component, characterized in that, The electronic control component includes: Indoor unit power supply circuit; The outdoor unit power supply circuit is communicatively connected to the indoor unit power supply circuit, and the outdoor unit power supply circuit includes a first power supply circuit and a second power supply circuit. The indoor unit controller is electrically connected to the controlled terminal of the indoor unit power circuit; the indoor unit controller is used to output a power-on / power-off signal to the outdoor unit power circuit via the indoor unit power circuit. The outdoor unit power supply circuit is used to connect the first power supply circuit when a power-on signal is received; and to output the power-off signal when a power-off signal is received. The outdoor unit controller is electrically connected to the controlled terminal of the outdoor unit power supply circuit; The outdoor unit controller is configured to output a power supply control signal when the first power supply circuit is connected, so as to control the outdoor unit power circuit to connect the second power supply circuit; and to control the outdoor unit power circuit to disconnect the second power supply circuit when the shutdown signal is received.

2. The electronic control component as described in claim 1, characterized in that, The outdoor unit power supply circuit includes: The power input terminal is used to connect the power supply voltage. The power output terminal is used to connect the load. An outdoor unit communication circuit, wherein the outdoor unit communication circuit has a communication terminal for connecting to the indoor unit controller; A power supply start-up circuit is connected in series between the power input terminal and the power output terminal. The controlled terminal of the power supply start-up circuit is electrically connected to the outdoor unit communication circuit. It is used to receive the start-up signal output by the indoor unit through the communication terminal of the outdoor unit communication circuit, and to conduct the path between the power input terminal and the power output terminal according to the start-up signal, so as to connect the first power supply circuit of the outdoor unit controller. A power supply switch circuit is connected in series between the power input terminal and the power output terminal. The controlled terminal of the power supply switch circuit is electrically connected to the outdoor unit controller. Based on the power supply control signal output by the outdoor unit controller, the power supply switch circuit turns on / off the path between the power input terminal and the power output terminal to turn on / off the second power supply circuit of the outdoor unit controller.

3. The electronic control component as described in claim 2, characterized in that, The power output terminal includes a first power supply terminal and a second power supply terminal. The first power supply terminal is electrically connected to the power supply start-up circuit and the outdoor unit controller, respectively. The second power supply terminal is electrically connected to the outdoor unit controller and the load, respectively. The power supply start-up circuit is used to connect the power input terminal and the first power supply terminal according to the power-on signal, so as to connect the first power supply circuit of the outdoor unit controller. The power supply switch circuit is used to turn on / off the path between the power input terminal and the second power supply terminal according to the power supply control signal, so as to turn on / off the second power supply circuit of the outdoor unit controller.

4. The electronic control component as described in claim 3, characterized in that, The power supply startup circuit includes: A first switch, comprising a first controlled terminal, a first terminal, a second terminal, and a common terminal; the first controlled terminal is electrically connected to the outdoor unit controller, the common terminal of the first switch is connected to the first terminal of the indoor unit power circuit, and the first terminal of the first switch is connected to the second terminal of the indoor unit power circuit; The second switch includes a second controlled terminal, a third terminal, and a fourth terminal; the second controlled terminal is electrically connected to the indoor unit controller, the third terminal is connected to the power input terminal, and the fourth terminal is connected to the first power supply terminal; wherein... The second switch is used to connect the first power supply circuit of the outdoor unit controller when a power-on signal is received, provided that the first switch is turned on. The first switch is used to open when a shutdown control signal is received from the outdoor unit controller, so as to control the second switch to open and stop receiving communication signals from the indoor unit power circuit.

5. The electronic control component as described in claim 3, characterized in that, The power supply switching circuit includes: The third switch includes a third controlled terminal, a fifth terminal, and a sixth terminal. The third controlled terminal is electrically connected to the outdoor unit controller, the fifth terminal is electrically connected to the power input terminal, and the sixth terminal is electrically connected to the second power supply terminal. The third switch is used to turn on when a shutdown control signal is received from the outdoor unit controller, so as to connect the second power supply circuit of the outdoor unit controller.

6. The electronic control component as described in claim 2, characterized in that, The outdoor unit communication circuit includes: The first optocoupler includes a first phototransistor and a first light-emitting diode. The emitter of the first phototransistor is connected to the signal line, and the anode of the first light-emitting diode is connected to the input voltage terminal. The cathode of the first light-emitting diode is electrically connected to the collector of the first transistor; the emitter of the first transistor is grounded, and the base of the first transistor is the receiving terminal. The second optocoupler includes a second phototransistor and a second light-emitting diode. The collector of the second phototransistor is connected to the input voltage terminal, the emitter of the second phototransistor is the internal transmitting terminal, and the anode of the second light-emitting diode is connected to the neutral line. The cathode of the second light-emitting diode is connected to the collector of the first phototransistor.

7. The electronic control component as described in claim 1, characterized in that, The indoor unit power supply circuit includes: An indoor unit communication circuit, wherein the controlled terminal of the indoor unit communication circuit is electrically connected to the indoor unit controller, and the indoor unit communication circuit has a communication terminal for connecting to the outdoor unit power supply circuit; The indoor unit controller is used to output the power-on signal to the outdoor unit power circuit via the communication terminal, so that the outdoor unit power circuit connects to the first power supply circuit.

8. The electronic control component as described in claim 7, characterized in that, The in-unit communication circuit includes: The third optocoupler includes a third phototransistor and a third light-emitting diode. The emitter of the third phototransistor is the second internal transmitting terminal, the collector of the third phototransistor is connected to the input voltage terminal, and the anode of the third light-emitting diode is connected to the signal line. The fourth optocoupler includes a fourth phototransistor and a fourth light-emitting diode. The collector of the fourth phototransistor is connected to the cathode of the third light-emitting diode, the emitter of the fourth phototransistor is connected to the live wire and the neutral wire, and the anode of the fourth light-emitting diode is connected to the input voltage terminal. The cathode of the fourth light-emitting diode is electrically connected to the collector of the second transistor; the emitter of the second transistor is grounded, and the base of the second transistor is the second internal receiving terminal.

9. A refrigeration device, characterized in that, The refrigeration equipment includes the electronic control components as described in any one of claims 1 to 8; the refrigeration equipment further includes an outdoor unit electronic control board and an indoor unit electronic control board; The outdoor unit power supply circuit and outdoor unit controller in the electrical control assembly are located on the outdoor unit electrical control board; The indoor unit power supply circuit and indoor unit controller in the electrical control components are located on the indoor unit electrical control board.

10. The refrigeration equipment as described in claim 9, characterized in that, The outdoor unit control board includes a first neutral power supply terminal, a first live power supply terminal, and a first signal power supply terminal; the indoor unit control board includes a second neutral power supply terminal, a second live power supply terminal, and a second signal power supply terminal. The first neutral power supply terminal is electrically connected to the second neutral power supply terminal, the first live power supply terminal is electrically connected to the second live power supply terminal, and the first signal line power supply terminal is electrically connected to the second signal line power supply terminal.

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