Air conditioner and power supply assembly thereof

Abstract

The utility model provides an air conditioner and a power supply assembly thereof. The air conditioner power supply assembly comprises an indoor unit control panel which comprises a first power utilization component set, and the first power utilization component set comprises an indoor unit communication circuit; and the outdoor unit control panel comprises an outdoor unit communication circuit, is in communication connection with the indoor unit communication circuit in a power line carrier manner, and obtains a working power supply from the outdoor unit control panel through a power line under the condition that the first power utilization component group is powered off. The utility model has the advantages that under the condition of abnormal power failure of the indoor unit, the energy consumption of unnecessary load is reduced, the overall power consumption of the indoor unit is reduced, and the power supply stability of the outdoor unit can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning, in particular to an air conditioner and a power supply component thereof. Background Art

[0002] The air conditioner generally includes an indoor unit and an outdoor unit, and the indoor unit and the outdoor unit communicate with each other through an indoor-outdoor unit communication circuit. Under normal working conditions, the mains power is input to the indoor unit and the outdoor unit respectively to maintain the normal operation of the indoor unit and the outdoor unit.

[0003] However, when the power supply to the indoor unit is lost, for example, the user turns off the power supply of the indoor unit indoors or an indoor circuit breaker trips, causing an abnormal power outage, the indoor unit has no power flow and cannot maintain communication with the outdoor unit, resulting in a communication failure between the indoor and outdoor units.

[0004] To this end, the related art proposes to use a power line carrier method to communicate between the indoor and outdoor units, and when the indoor unit is powered off, the outdoor unit supplies power to the indoor unit through the power line.

[0005] However, when the indoor unit consumes a lot of power, it will cause excessive current consumption on the communication line, and the outdoor unit's switching power supply will be in a heavy-load working state. Especially when a multi-split outdoor unit is connected to multiple indoor units, the current consumption is even greater, the switching power supply voltage is unstable, and it may even cause the switching power supply protection to have no weak current output. Utility Model Content

[0006] One purpose of the first aspect of the utility model is to enable the first electrical component group to obtain working power from the outdoor unit control board through the power line in the event of an abnormal power outage, thereby reducing the energy consumption of non-essential loads and thus reducing the overall power consumption of the indoor unit.

[0007] Another object of the first aspect of the present invention is to utilize the power control switch to reasonably control the power on and off of the second power-consuming component.

[0008] Another object of the second aspect of the utility model is to utilize the AC power detection circuit, the main controller and the power control switch to work together to achieve real-time monitoring of the external power status of the indoor unit and precise control of the power supply of the second electrical component group.

[0009] In particular, according to a first aspect of the present utility model, the present utility model provides an air conditioner power supply assembly, comprising:

[0010] An indoor unit control panel, comprising a first electrical component group, wherein the first electrical component group comprises an indoor unit communication circuit; and

[0011] The outdoor unit control board includes an outdoor unit communication circuit, which is connected to the indoor unit communication circuit by means of a power line carrier, and in the event of an abnormal power outage, the first power-consuming component group obtains working power from the outdoor unit control board through the power line.

[0012] Optionally, the indoor unit control panel also includes a second electrical component group and a power control switch, the first electrical component group and the power control switch are respectively connected to the external power supply of the indoor unit, the second electrical component group is connected to the power control switch, and the power control switch controls the power on and off of the second electrical component group.

[0013] Optionally, the indoor unit control panel also includes a mains power detection circuit and a main controller, the main controller is respectively connected to the mains power detection circuit and the power control switch, and when the mains power detection circuit detects that the external power supply is abnormal, the first electrical component group provides working power to the main controller and the power control switch, and the main controller controls the power control switch to disconnect.

[0014] Optionally, the AC power detection circuit includes a first isolation device, which is respectively connected to the external power supply of the indoor unit and the main controller, and the first isolation device is turned on when the AC power input of the external power supply is normal, and is disconnected when the AC power input is abnormal.

[0015] Optionally, the indoor unit control board further includes an indoor unit power supply circuit and an indoor unit switch power supply, wherein the input end of the indoor unit power supply circuit is connected to the external power supply of the indoor unit, and the output end is connected to the input end of the indoor unit switch power supply, and is configured to convert the AC power input by the external power supply into DC power;

[0016] The output end of the indoor unit switch power supply is respectively connected to the first power component group and the power control switch, and is configured to convert the input direct current into multiple voltages.

[0017] Optionally, the AC power detection circuit includes a second isolation device, which is respectively connected to the indoor unit switch power supply and the main controller, and the second isolation device is turned on when the weak current output of the indoor unit switch power supply is normal, and is disconnected when the weak current output is abnormal.

[0018] Optionally, the mains power detection circuit is a voltage detection circuit or a current detection circuit.

[0019] Optionally, the first electrical component group also includes a DC converter, and when the AC power detection circuit detects that the external power supply is abnormal, the indoor unit communication circuit provides working power to the main controller and the power control switch respectively through the DC converter.

[0020] Optionally, the second electrical component group includes but is not limited to a display panel control unit, a panel control unit and a fan control unit.

[0021] Optionally, the power control switch is a triode, a MOS tube, a relay or a photoelectric isolator.

[0022] Optionally, the outdoor unit control board further includes an outdoor unit power supply circuit and an outdoor unit switch power supply, wherein the input end of the outdoor unit power supply circuit is connected to the external power supply of the outdoor unit, and the output end is connected to the input end of the outdoor unit switch power supply, and is configured to convert the AC power input by the external power supply into DC power;

[0023] The output end of the outdoor unit switching power supply is connected to the indoor unit communication circuit and is configured to convert the input direct current into multi-channel voltages.

[0024] According to a second aspect of the utility model, the utility model provides an air conditioner, comprising any one of the air conditioner power supply components described above.

[0025] The utility model provides an air conditioner power supply assembly, wherein the first electrical component group of the indoor unit control board includes an indoor unit communication circuit, and the indoor unit communication circuit is communicatively connected with the outdoor unit communication circuit of the outdoor unit control board via a power line carrier. In the event of an abnormal power outage, the first electrical component group can obtain operating power from the outdoor unit control board via the power line, so that necessary components of the indoor unit can still operate, reducing the energy consumption of non-essential loads, thereby reducing the overall power consumption of the indoor unit, while ensuring the power supply stability of the outdoor unit.

[0026] Furthermore, in the power supply assembly of the air conditioner of the utility model, the first electrical component group and the power control switch of the indoor unit control board are respectively connected to the external power supply of the indoor unit, and the second electrical component group is connected to the power control switch, and the power on and off of the second electrical component group is controlled by the power control switch. In this way, in the case of abnormal power failure of the indoor unit, by turning off the power control switch, it is possible to prevent the working power obtained by the first electrical component group from the indoor unit control board from being supplied to the second electrical component group.

[0027] Furthermore, in the power supply assembly of the air conditioner of the utility model, the main controller is respectively connected to the main power detection circuit and the power control switch. When the main power detection circuit detects that the external power supply is abnormal, the first power-consuming component group can provide working power to the main controller and the power control switch, so that the main controller controls the power control switch to be disconnected. Through the coordinated work of the main power detection circuit, the main controller and the power control switch, real-time monitoring of the external power supply state of the indoor unit and precise control of the power supply of the second power-consuming component group can be achieved.

[0028] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0030] Figure 1 is a schematic structural diagram of an air conditioner power supply assembly according to an embodiment of the utility model;

[0031] Figure 2 is a schematic structural diagram of an air conditioner power supply assembly according to another embodiment of the utility model;

[0032] Figure 3 It is a schematic structural diagram of an air conditioner according to an embodiment of the utility model.

[0033] Reference numerals:

[0034] 1. Air conditioner; 10. Indoor unit; 100. Indoor unit control board; 110. Indoor unit power supply circuit; 120. Indoor unit switch power supply; 130. Main controller; 140. First electrical component group; 141. Indoor unit communication circuit; 142. DC converter; 143. Non-volatile memory; 144. Electronic expansion valve; 150. Second electrical component group; 151. Display panel control unit; 152. Stepper motor control unit; 153. DC fan control unit; 154. Panel control unit; 160. Mains detection circuit; 170. Power control switch; 20. Outdoor unit; 200. Outdoor unit control board; 210. Outdoor unit power supply circuit; 220. Outdoor unit switch power supply; 230. Outdoor unit communication circuit; 300. Power line. DETAILED DESCRIPTION

[0035] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. The various embodiments provided are intended to explain the present invention, rather than to limit the present invention. In fact, it is apparent to those skilled in the art that various modifications and variations may be made to the present invention without departing from the scope or spirit of the present invention. For example, a feature illustrated or described as a part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover such modifications and variations within the scope of the appended claims and their equivalents.

[0036] Refer to the following Figures 1 to 3 The air conditioner 1 and its power supply assembly of the embodiment of the utility model are described. The directions or positional relationships indicated by "inside", "outside", "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. In order to facilitate the illustration of the structure of the device, some of the drawings of the utility model are illustrated in perspective.

[0037] In the description of this embodiment, it should be understood that the term "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0038] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "some examples", "an example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The utility model provides a power supply component for an air conditioner 1. Figure 1 1 is a schematic structural diagram of a power supply component of an air conditioner 1 according to an embodiment of the utility model, which shows the working state of the power supply component when the indoor unit 10 is normally powered on. Figure 2 1 is a schematic structural diagram of a power supply component of an air conditioner 1 according to another embodiment of the utility model, which shows the working state of the power supply component when the indoor unit 10 is abnormally powered off, wherein the solid arrow represents the current transmission direction, and the hollow arrow represents the signal transmission direction, such as Figure 1 and Figure 2As shown, the power supply assembly of the air conditioner 1 at least includes an indoor unit control board 100 and an outdoor unit control board 200 .

[0040] The indoor unit control board 100 is applied to the indoor unit 10 of the air conditioner 1. The indoor unit control board 100 includes a first electrical component group 140. Each component in the first electrical component group 140 is a necessary functional load of the indoor unit 10 and needs to continue to work when the indoor unit 10 is abnormally powered off. The first electrical component group 140 includes at least an indoor unit communication circuit 141.

[0041] The outdoor unit control board 200 is applied to the indoor unit 10 of the air conditioner 1. The outdoor unit control board 200 includes at least an outdoor unit communication circuit 230. The outdoor unit communication circuit 230 is connected to the indoor unit communication circuit 141 by means of a carrier wave of the power line 300. In addition, in the event of an abnormal power outage, the first power-consuming component group 140 obtains the working power from the outdoor unit control board 200 through the power line 300.

[0042] In the normal working state of the air conditioner 1, the indoor unit 10 and the outdoor unit 20 are independently powered by their own external power supplies, and the first power-consuming component group 140 of the indoor unit 10, including the key indoor unit communication circuit 141, is directly powered by the external power supply of the indoor unit 10 to ensure its normal operation. At this time, the power line 300 between the indoor unit communication circuit 141 and the outdoor unit communication circuit 230 mainly undertakes the communication function to ensure that the information transmission between the indoor and outdoor units is unimpeded.

[0043] However, when the indoor unit 10 is abnormally powered off, such as the user actively turns off the external power supply of the indoor unit 10, or the external power supply of the indoor unit 10 suddenly trips due to some reasons, the external power supply of the indoor unit 10 will not be able to provide the power required for normal operation of the first power component group 140. In such an emergency, the power line 300 between the indoor unit communication circuit 141 and the outdoor unit communication circuit 230 not only continues to assume the communication function, but also assumes the important role of power transmission.

[0044] Through the power line 300 carrier technology, the first power component group 140 can obtain the required working power from the outdoor unit control board 200. This design allows the first power component group 140, especially the indoor unit communication circuit 141, to maintain its normal operation in the case of abnormal power failure of the indoor unit 10, ensuring smooth communication between the indoor and outdoor units, thereby allowing the indoor unit 10 to perform some key operations, such as closing the valve, to prevent system damage or danger.

[0045] In some embodiments, the indoor unit control panel 100 further includes a second electrical component group 150 and a power control switch 170, the first electrical component group 140 and the power control switch 170 are respectively connected to an external power supply of the indoor unit 10, the second electrical component group 150 is connected to the power control switch 170, and the power control switch 170 controls the power on and off of the second electrical component group 150.

[0046] When the air conditioner 1 is in normal working state, the external power supply of the indoor unit 10 can directly supply power to the first power component group, and indirectly supply power to the second power component group 150 through the power control switch 170 .

[0047] In the normal working state of the air conditioner 1, the external power supply of the indoor unit 10 can not only directly supply power to the first electrical component group 140 to ensure the normal operation of necessary loads such as the indoor unit communication circuit 141, but also indirectly provide the required power to the second electrical component group 150 through the power control switch 170. In this way, the second electrical component group 150, as a non-essential functional load of the indoor unit 10, can also obtain a stable power supply when needed.

[0048] However, when the indoor unit 10 is abnormally powered off, the power control switch 170 can be automatically disconnected to prevent the working power obtained by the first electrical component group 140 from the outdoor unit control board 200 from being mistakenly supplied to the second electrical component group 150. In this way, it can be ensured that when the working power is limited, the normal operation of the first electrical component group 140 is prioritized, while avoiding unnecessary energy consumption and potential safety risks.

[0049] Specifically, when the indoor unit 10 is abnormally powered off, the first power component group 140 will obtain working power from the outdoor unit control board 200 through the power line 300 to maintain the normal operation of basic functions such as communication. The second power component group 150, as a non-essential functional load, will be cut off from power supply by the power control switch 170 and stop working. This can not only reduce the energy consumption of non-essential loads and reduce the overall power consumption of the indoor unit 10, but also ensure the power supply stability of the outdoor unit 20, and prevent the normal operation of the outdoor unit 20 from being affected by the continued operation of the second power component group 150.

[0050] In some embodiments, the indoor unit control panel 100 also includes a mains power detection circuit 160 and a main controller 130. The main controller 130 is respectively connected to the mains power detection circuit 160 and the power control switch 170. When the mains power detection circuit 160 detects an abnormality in the external power supply, the first power component group 140 provides working power to the main controller 130 and the power control switch 170, and the main controller 130 controls the power control switch 170 to disconnect.

[0051] The mains detection circuit 160 is mainly used to detect the external power supply state of the indoor unit 10, and monitor in real time whether the external power supply of the indoor unit 10 is normally supplied. Once an abnormality of the external power supply is detected, such as power failure or voltage instability, the mains detection circuit 160 will immediately send a corresponding signal to the main controller 130.

[0052] The main controller 130 is the core component of the indoor unit control board 100, which is responsible for receiving and processing signals from various components or modules and issuing corresponding control instructions. After receiving the abnormal signal sent by the main power detection circuit 160, the main controller 130 will respond quickly. Since the first power component group 140 has obtained the working power from the outdoor unit control board 200 through the power line 300, the main controller 130 will continue to work using this part of the power.

[0053] In general, the main controller 130 sends a disconnection instruction to the power control switch 170. After receiving the instruction, the power control switch 170 immediately disconnects from the second power component group 150, thereby cutting off its power supply. In this way, even if the external power supply is abnormal, it can ensure that the second power component group 150 will not continue to work, thereby avoiding unnecessary energy consumption and potential safety risks.

[0054] Through the coordinated work of the mains detection circuit 160, the main controller 130 and the power control switch 170, the indoor unit control board 100 can realize real-time monitoring of the external power state of the indoor unit 10 and precise control of the power supply of the second power component group 150. This not only improves the safety and stability of the air conditioner 1, but also further optimizes the energy consumption control, providing users with a more reliable and efficient use experience.

[0055] In a specific example, the AC power detection circuit 160 may include a first isolation device, such as an optocoupler isolator, which is respectively connected to the external power supply of the indoor unit 10 and the main controller 130, and the first isolation device is turned on when the AC power input of the external power supply is normal, and is disconnected when the AC power input is abnormal.

[0056] The first isolation device is a key component in the mains detection circuit 160, and is responsible for monitoring the mains input status of the external power supply. Specifically, one end of the first isolation device is connected to the external power supply of the indoor unit 10, and the other end is connected to the main controller 130. When the mains input of the external power supply is normal, the first isolation device is in a conducting state, allowing current to pass, thereby transmitting a "power supply normal" signal to the main controller 130.

[0057] However, when the AC power input of the external power supply is abnormal, such as power outage, unstable voltage or out of safety range, the first isolation device will quickly disconnect, cut off the connection with the external power supply, and send a "power abnormality" signal to the main controller 130.

[0058] After receiving the abnormal signal, the main controller 130 will respond quickly according to the preset logic judgment and processing flow. Since the first electrical component group 140 has obtained the working power from the outdoor unit control board 200 through the power line 300, the main controller 130 can continue to work with this power and send an instruction to the power control switch 170 to control it to disconnect, thereby ensuring that the second electrical component group 150 will not continue to work due to the abnormality of the external power supply.

[0059] The introduction of the first isolation device can monitor the mains input status of the external power supply in real time and accurately, and respond quickly when an abnormality is found, thereby ensuring the safety and stability of the air conditioner 1. At the same time, due to the use of the first isolation device, the entire detection process is safer and more reliable, avoiding the safety risks that may be caused by directly detecting the external power supply.

[0060] In some embodiments, the indoor unit control board 100 further includes an indoor unit power supply circuit 110 and an indoor unit switch power supply 120, wherein the input end of the indoor unit power supply circuit 110 is connected to the external power supply of the indoor unit 10, and the output end is connected to the input end of the indoor unit switch power supply 120, and is configured to convert the AC power input from the external power supply into DC power. The output end of the indoor unit switch power supply 120 is respectively connected to the first power component group 140 and the power control switch 170, and is configured to convert the input DC power into a multi-channel voltage.

[0061] Specifically, the indoor unit power supply circuit 110 is a key component that connects the external power supply and the indoor unit switch power supply 120. Its input end is directly connected to the external power supply of the indoor unit 10 and is responsible for receiving the mains power input by the external power supply. After receiving the mains power, the indoor unit power supply circuit 110 converts the unstable AC mains power into stable and reliable DC power through a series of conversions and processes, providing a stable power supply for subsequent circuits.

[0062] The converted DC power will be transmitted to the input end of the indoor unit switch power supply 120. The indoor unit switch power supply 120 is a power module with multiple outputs, and its main function is to further convert the input DC power into multiple outputs with different voltages. These outputs with different voltages can meet the power requirements of different components on the indoor unit control board 100.

[0063] The output end of the indoor unit switch power supply 120 is respectively connected to the first electrical component group 140 and the power control switch 170. This means that both the first electrical component group 140 and the power control switch 170 can obtain the required power from the indoor unit switch power supply 120. Since the indoor unit switch power supply 120 can provide stable and multi-channel voltage output, it can ensure that the first electrical component group 140, the power control switch 170 and the second electrical component group 150 can all obtain stable and reliable power supply.

[0064] In addition, the cooperation between the indoor unit power supply circuit 110 and the indoor unit switch power supply 120 further improves the efficiency of power management. The indoor unit power supply circuit 110 is responsible for converting the mains power into direct current, while the indoor unit switch power supply 120 is responsible for converting the direct current into multiple voltage outputs. This division of labor makes the entire power management system more efficient and stable.

[0065] In another specific example, the AC power detection circuit 160 may include a second isolation device, such as an optocoupler isolator. Unlike the first isolation device, the second isolation device is respectively connected to the indoor unit switching power supply 120 and the main controller 130, and the second isolation device is turned on when the weak current output of the indoor unit switching power supply 120 is normal, and is disconnected when the weak current output is abnormal.

[0066] The second isolation device is a key component in the mains detection circuit 160, one end of which is connected to the indoor unit switch power supply 120, and the other end is connected to the main controller 130. The indoor unit switch power supply 120 is responsible for converting direct current into multiple voltage outputs, including weak current outputs. These weak current outputs are used to provide power for some circuits or components on the indoor unit control board 100.

[0067] When the weak current output of the indoor unit switch power supply 120 is normal, the second isolation device is in the on state, which means that the normal state signal of the weak current output can be smoothly transmitted to the main controller 130 through the second isolation device, so that the main controller 130 can confirm that the power supply state is good and continue to execute the corresponding control logic.

[0068] However, when the weak current output of the indoor unit switch power supply 120 is abnormal, such as voltage instability, out of range or complete failure, the second isolation device will be quickly disconnected. This action cuts off the connection with the indoor unit switch power supply 120 and sends a weak current output abnormality signal to the main controller 130.

[0069] After receiving the abnormal signal, the main controller 130 will react according to the preset logic judgment and processing flow. Since the first power component group 140 has obtained the working power from the outdoor unit control board 200 through the power line 300, the main controller 130 can continue to work with this power. The main controller 130 will issue an instruction to the power control switch 170 to control it to disconnect, so as to ensure that the second power component group 150 will not continue to work due to the abnormal weak current output.

[0070] The introduction of the second isolation device can realize real-time monitoring and accurate judgment of the weak-current output status of the indoor unit switching power supply 120. It can respond quickly when the weak-current output is abnormal, and prevent potential safety risks by disconnecting the power control switch 170, thereby ensuring the stable operation of the air conditioner 1 and the safe use of the user.

[0071] Of course, the first isolation device and the second isolation device can also be used in combination in the mains detection circuit 160 to improve the accuracy and reliability of the detection, so that the main controller 130 can fully and accurately understand the external power supply status of the indoor unit 10. Once any abnormality is detected, the main controller 130 will respond quickly and disconnect the power supply of the second power component group 150 by controlling the power control switch 170, thereby greatly reducing the risk of failure of the air conditioner 1 and improving the user experience.

[0072] In some embodiments, the AC power detection circuit 160 may be entirely replaced by a voltage detection circuit or a current detection circuit.

[0073] For the voltage detection circuit, it is mainly used to detect the voltage signal in the circuit and determine the working state of the power supply. This circuit is usually implemented using a comparator to compare the voltage signal to be detected with the reference voltage. When the voltage signal exceeds or falls below the reference voltage, a corresponding signal is output. The voltage detection circuit can directly reflect the working state of the power supply and is very suitable for application scenarios that require precise voltage control.

[0074] For the current detection circuit, it is mainly used to detect the current size in the circuit and determine the working state or load condition of the circuit. This circuit can be implemented by measuring the voltage drop in the circuit or using a special current detection element. The current detection circuit can provide more direct load information and is very useful for application scenarios that need to monitor load changes or protect circuits from overcurrent damage.

[0075] The mains detection circuit 160 can be replaced with a voltage detection circuit or a current detection circuit according to specific application requirements. If the working state of the power supply is of primary concern, a voltage detection circuit can be selected; if the load condition needs to be monitored or the circuit needs to be protected from overcurrent damage, a current detection circuit can be selected. Of course, in the replacement process, factors such as circuit design, cost, and compatibility with other circuits also need to be considered, and this embodiment does not limit this.

[0076] In a specific example, the first electrical component group 140 may include an indoor unit communication circuit 141, a DC converter 142, a non-volatile memory 143 (such as EEPROM+FLASH) and an electronic expansion valve 144, and the second electrical component group may include a display panel control unit 151, a stepper motor control unit 152, a DC fan control unit 153, a panel control unit 154 and other functional loads.

[0077] The indoor unit communication circuit 141 is responsible for the communication connection between the indoor unit 10 and the outdoor unit 20 to realize the transmission of control signals and data information. It ensures the coordinated work between the indoor unit 10 and the outdoor unit 20 to realize the overall control of the air conditioner 1.

[0078] The DC converter 142 is responsible for converting the input DC power into a voltage level suitable for each electrical component. It can provide a stable working power supply to ensure the normal operation of each component.

[0079] The non-volatile memory 143 is used to store the control program, parameter settings and other important data of the air conditioner 1, and has the characteristics of high-speed reading and writing and long-term data retention, ensuring that the control logic and parameter settings of the air conditioner 1 can remain unchanged after power failure.

[0080] The electronic expansion valve 144 is used to control the flow of the refrigerant, and the flow of the refrigerant is controlled by adjusting the opening of the valve, thereby achieving precise adjustment of the cooling or heating effect of the air conditioner 1. Precise control of the electronic expansion valve 144 helps to improve the energy efficiency and comfort of the air conditioner 1.

[0081] The display panel control unit 151 is responsible for controlling and managing the operation of the display panel, receiving signals from the main controller 130 or other control units, and displaying corresponding information on the display panel, such as temperature settings, operating modes, timing settings, etc. In this way, the user can intuitively understand the operating status and settings of the air conditioner 1.

[0082] The stepper motor control unit 152 is mainly used to control the operation of the stepper motor. The stepper motor is usually used in the air conditioner 1 to accurately adjust the position of components such as the damper and the air guide plate to achieve directional air supply or optimize air flow. The stepper motor control unit 152 ensures that the motor can accurately rotate according to the predetermined number of steps and speed, thereby meeting the air conditioner 1's adjustment requirements for wind direction and wind speed.

[0083] The DC fan control unit 153 is mainly responsible for controlling the operation of the DC fan. The DC fan is an important component in the air conditioner 1, which is used to generate airflow to achieve cooling or heating effects. The DC fan control unit 153 adjusts the speed and power of the fan according to the working state of the air conditioner 1 and user needs, thereby optimizing the air circulation and temperature regulation effects.

[0084] The panel control unit 154 is a panel input device for managing the air conditioner 1, such as buttons, touch screen, etc., which receives user operation instructions and transmits them to the main controller 130 or other control units to realize the user's various operation requirements for the air conditioner 1.

[0085] Other functional loads may include other components or devices in the air conditioner 1 that require power supply to achieve specific functions. The specific functional loads depend on the design and functional requirements of the air conditioner 1, and may include sensors, lighting equipment, dehumidification devices, etc.

[0086] It is worth noting that when the external power supply of the indoor unit 10 can supply power normally, the indoor unit switch power supply 120 will play its core role and provide the required working power to the first power component group 140, the second power component group 150, the main controller 130 and the power control switch 170. This means that under normal working conditions, all key components can obtain stable power supply, thereby ensuring the normal operation of the air conditioner 1.

[0087] However, when the indoor unit 10 is abnormally powered off, the indoor unit communication circuit 141 obtains the working power from the outdoor unit control board 200 and supplies this power to the DC converter 142. After receiving the power, the DC converter 142 converts it into a voltage level suitable for each component, and supplies power to the non-volatile memory 143, the electronic expansion valve 144, the main controller 130 and the power control switch 170 respectively. This ensures that even if the indoor unit 10 is abnormally powered off, the key components can still continue to work to maintain the basic functions and safety of the air conditioner 1.

[0088] The power control switch 170 can be a transistor, a MOS tube, a relay or a photoelectric isolator. The selection of the power control switch 170 depends on the specific application requirements and system requirements. In practical applications, the most suitable type of power control switch 170 can be selected based on comprehensive considerations such as system performance, cost, reliability, etc. At the same time, it is also necessary to pay attention to the parameters such as the driving mode, power consumption, and response speed of the power control switch 170 to ensure that it can meet the overall requirements of the system.

[0089] In a specific example, the outdoor unit control board 200 includes an outdoor unit power supply circuit 210, an outdoor unit switch power supply 220, an outdoor unit communication circuit 230 and other functional loads, wherein:

[0090] The input end of the outdoor unit power supply circuit 210 is connected to the external power supply of the outdoor unit 20, and the output end is connected to the input end of the outdoor unit switching power supply 220, and is configured to convert the AC power input from the external power supply into DC power.

[0091] The output end of the outdoor unit switching power supply 220 is connected to the indoor unit communication circuit 141 and other functional loads, and is configured to convert the input direct current into multiple voltages.

[0092] Since the functions of the power circuits of the indoor and outdoor units and the switching power supply are roughly the same, they will not be described here.

[0093] The utility model also provides an air conditioner 1, which comprises the power supply assembly of the air conditioner 1 mentioned above.

[0094] Figure 3 is a schematic structural diagram of an air conditioner 1 according to an embodiment of the utility model, as shown in Figure 3 As shown, specifically, an outdoor unit 20 and at least one indoor unit 10, the outdoor unit 20 is provided with the outdoor unit control board 200 mentioned above, each indoor unit 10 is provided with the indoor unit control board 100 mentioned above, and the indoor unit communication circuit 141 in the outdoor unit control board 200 is communicatively connected with the communication circuit in each indoor unit control board 100 via a power line 300 carrier.

[0095] In the prior art, when multiple indoor units 10 suddenly lose power, the electronic expansion valve 144 of the indoor unit 10 cannot be completely closed. This will lead to a series of chain reactions, such as the inability of refrigerant to evaporate, accumulation of liquid refrigerant, and liquid refrigerant entering the compressor, which may eventually lead to serious problems such as compressor damage and condensation and leakage of the indoor unit 10. In addition, when the system needs oil return or defrosting, if the electronic expansion valve 144 of the indoor unit 10 that loses power is in a closed state, and the number of indoor units 10 that lose power is large, it will directly affect the oil return and defrosting effects, and thus affect the reliability and safety of the entire system.

[0096] However, by using the power supply assembly of the air conditioner 1 of the present application, when the indoor unit 10 is abnormally powered off, key components such as the electronic expansion valve 144 can be ensured to obtain a stable working power supply. Specifically, when the external power supply of the indoor unit 10 is abnormal, the indoor unit communication circuit 141 will obtain the working power from the outdoor unit control board 200, and supply power to components such as the electronic expansion valve 144 through the DC converter 142. In this way, even when the indoor unit 10 is powered off, the electronic expansion valve 144 can still work normally, avoiding the problem that it cannot be completely closed.

[0097] In addition, the power supply assembly can also optimize the oil return and defrosting process. When oil return or defrosting is required, since the key components of the indoor unit 10 can still be supplied with electricity, the normal opening and closing of the electronic expansion valve 144 can be ensured, thereby ensuring the smooth progress of oil return and defrosting. This can not only improve the reliability of the system, but also extend the service life of key components such as the compressor.

[0098] From the perspective of energy consumption, the indoor unit 10 only runs necessary functional loads, such as the electronic expansion valve 144 and the indoor unit communication circuit 141, when there is an abnormal power outage, which means that most non-critical components are in a closed state, thereby greatly reducing energy consumption. This energy-saving design helps reduce energy waste and achieve more economical and efficient use of air conditioning.

[0099] Secondly, from the perspective of the load of the power line 300, the reduction of the functional load of the indoor unit 10 also reduces the current pressure on the power line 300. This optimization is particularly important when the outdoor unit 20 is connected to multiple indoor units 10. By preventing the outdoor unit switching power supply 220 from being in a heavy-load working state, the stable power supply of the power line 300 can be ensured, and the possibility of current fluctuations and voltage instability can be reduced. This not only helps to ensure the stable operation of the air-conditioning system, but also prolongs the service life of the power line 300 and the outdoor unit switching power supply 220.

[0100] In addition, a stable voltage supply is essential to ensure the normal operation of the outdoor unit switch power supply 220. The outdoor unit switch power supply 220 is prone to failure or performance degradation when the voltage is unstable, thereby affecting the normal operation of the entire air conditioning system. By optimizing the design of the power supply component, the voltage can be kept stable when the indoor unit 10 is abnormally powered off, thereby ensuring the reliability and stability of the outdoor unit switch power supply 220.

[0101] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An air conditioner power supply assembly, characterized in that: include: An indoor unit control panel includes a first electrical component group, wherein the first electrical component group includes an indoor unit communication circuit; and The outdoor unit control board includes an outdoor unit communication circuit, which is connected to the indoor unit communication circuit by means of a power line carrier, and in the event of an abnormal power outage, the first power-consuming component group obtains working power from the outdoor unit control board through the power line.

2. The air conditioner power supply assembly according to claim 1, characterized in that: The indoor unit control panel also includes a second electrical component group and a power control switch, the first electrical component group and the power control switch are respectively connected to the external power supply of the indoor unit, the second electrical component group is connected to the power control switch, and the power control switch is controlled to control the power on and off of the second electrical component group.

3. The air conditioner power supply assembly according to claim 2, characterized in that: The indoor unit control panel also includes a mains power detection circuit and a main controller, the main controller is respectively connected to the mains power detection circuit and the power control switch, and when the mains power detection circuit detects that the external power supply is abnormal, the first electrical component group provides working power to the main controller and the power control switch, and the main controller controls the power control switch to disconnect.

4. The air conditioner power supply assembly according to claim 3, characterized in that: The AC power detection circuit includes a first isolation device, which is respectively connected to the external power supply of the indoor unit and the main controller, and the first isolation device is turned on when the AC power input of the external power supply is normal, and is disconnected when the AC power input is abnormal.

5. The air conditioner power supply assembly according to claim 3, characterized in that: The indoor unit control board also includes an indoor unit power supply circuit and an indoor unit switch power supply, wherein the input end of the indoor unit power supply circuit is connected to the external power supply of the indoor unit, and the output end is connected to the input end of the indoor unit switch power supply, and is configured to convert the AC power input by the external power supply into DC power; The output end of the indoor unit switch power supply is respectively connected to the first power component group and the power control switch, and is configured to convert the input direct current into multiple voltages.

6. The air conditioner power supply assembly according to claim 5, characterized in that: The AC power detection circuit includes a second isolation device, which is respectively connected to the indoor unit switch power supply and the main controller, and the second isolation device is turned on when the weak current output of the indoor unit switch power supply is normal, and is disconnected when the weak current output is abnormal.

7. The air conditioner power supply assembly according to claim 3, characterized in that: The mains power detection circuit is a voltage detection circuit or a current detection circuit.

8. The air conditioner power supply assembly according to claim 3, characterized in that: The first electrical component group also includes a DC converter, and when the AC power detection circuit detects that the external power supply is abnormal, the indoor unit communication circuit provides working power to the main controller and the power control switch respectively through the DC converter.

9. The air conditioner power supply assembly according to claim 2, characterized in that: The second electrical component group includes but is not limited to a display panel control unit, a panel control unit and a fan control unit.

10. The air conditioner power supply assembly according to claim 2, characterized in that: The power control switch is a triode, a MOS tube, a relay or a photoelectric isolator.

11. The air conditioner power supply assembly according to claim 1, characterized in that: The outdoor unit control board also includes an outdoor unit power supply circuit and an outdoor unit switch power supply, wherein the input end of the outdoor unit power supply circuit is connected to the external power supply of the outdoor unit, and the output end is connected to the input end of the outdoor unit switch power supply, and is configured to convert the AC power input by the external power supply into DC power; The output end of the outdoor unit switching power supply is connected to the indoor unit communication circuit and is configured to convert the input direct current into multiple voltages.

12. An air conditioner, characterized in that: It comprises an air conditioner power supply component according to any one of claims 1-11.

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