Electric control device and air conditioner

Abstract

The utility model discloses an electric control device and an air conditioner, and relates to the technical field of air conditioners, the air conditioner comprises a function load module, the function load module comprises a first end face and a second end face; the electric control device comprises a strong current control panel and a weak current control panel, and the weak current control panel is electrically connected with the strong current control panel; the strong current control board is arranged corresponding to the first end face, and the weak current control board is arranged corresponding to the second end face. Thus, the electric control device is arranged to be the strong current control panel and the weak current control panel, and the strong current control panel and the weak current control panel correspond to the first end face and the second end face of the function load module respectively, the integrated design of the electric control device and the function load module is achieved, the space inside the air conditioner is effectively saved, and therefore the size of the air conditioner is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an electric control device and an air conditioner. Background Art

[0002] The electronic control unit is the core component of an air conditioner, responsible for receiving user commands or program instructions and controlling the air conditioner's operation. Functional load modules (such as the fresh air module, compressor module, and impeller module) are components that perform specific functions within the air conditioner, and their proper operation depends on the effective control of the electronic control unit. However, existing electronic control units and functional load modules typically occupy separate spaces within the air conditioner, making the air conditioner bulky. Utility Model Content

[0003] The main purpose of the utility model is to provide an electric control device and an air conditioner, aiming to reduce the volume of the air conditioner.

[0004] To achieve the above-mentioned object, the electric control device proposed in the present invention is applied to an air conditioner, wherein the air conditioner includes a functional load module, and the functional load module includes a first end surface and a second end surface; the electric control device includes:

[0005] Strong current control panel;

[0006] A weak current control panel, the weak current control panel being electrically connected to the strong current control panel;

[0007] The strong current control panel is arranged corresponding to the first end surface, and the weak current control panel is arranged corresponding to the second end surface.

[0008] In one embodiment, the first end surface and the second end surface intersect or are arranged opposite to each other.

[0009] In one embodiment, a weak current connector is provided on one side of the weak current control panel, and the air conditioner further includes a panel, and the weak current connector is provided on a side close to the panel.

[0010] In one embodiment, the electric control device further includes an electric control box, and the electric control box includes a first electric control box body and a second electric control box body;

[0011] The first electric control box body is arranged corresponding to the first end surface, and the high-voltage control board is arranged on the first electric control box body;

[0012] The second electric control box body is arranged corresponding to the second end surface, and the weak current control board is arranged on the second electric control box body.

[0013] In one embodiment, the electric control device further includes a strong electric wire connected to the strong electric control board and a weak electric wire connected to the weak electric control board;

[0014] The first electric control box body is provided with a strong current wire passing portion, and the strong current wire passing portion is used to limit the strong current wire;

[0015] The second electric control box body is provided with a weak current wire passing portion, and the weak current wire passing portion is used to limit the weak current wire.

[0016] In one embodiment, the high-voltage line portion includes a line pipe, and the high-voltage line can be connected to the air conditioner outdoor unit or the external power supply through the line pipe.

[0017] In one embodiment, the wire passage is provided on the first electric control box body and is located close to the second electric control box body.

[0018] In one embodiment, the air conditioner includes a first motor and / or an auxiliary heating module, the high-voltage control panel includes a high-voltage connector, and the high-voltage wire passing portion includes a first wire passing port on the first electric control box body corresponding to the first motor and / or auxiliary heating module, and the high-voltage wire can be connected to the first motor and / or the auxiliary heating module through the first wire passing port.

[0019] In one embodiment, the high-voltage connector is provided corresponding to the first wire-passing port.

[0020] In one embodiment, the weak current line portion is provided along the circumference of the weak current control panel;

[0021] A weak current connector is provided on one side of the weak current control board. The weak current connector is provided on an edge of the weak current control board corresponding to the weak current wire passing portion.

[0022] In one embodiment, the air conditioner further includes at least one second motor; the weak-current line passing portion is provided with a second line passing port corresponding to the connector, and the second electric control box body is provided with a third line passing port corresponding to the weak-current line passing portion, and the weak-current electric wire can be connected to the functional load module and / or the second motor via the second line passing port, the weak-current line passing portion and the third line passing port.

[0023] In one embodiment, a blank area is provided on the weak current control panel corresponding to the third line outlet.

[0024] In one embodiment, the electric control box is provided with a mounting member, and the mounting member is used to fix the electric control box to the air conditioner.

[0025] In one embodiment, the electric control device further includes a limiting hinge, and the first electric control box body and the second electric control box body are hingedly connected via the limiting hinge.

[0026] In one embodiment, the air conditioner further includes a second motor, and the weak current control board includes:

[0027] Main control circuit;

[0028] N stages of cascaded driving circuits, wherein the control signal input terminal of each stage of the driving circuit is respectively connected to the control signal output terminal of the main control circuit, the data signal input terminal of the first stage driving circuit is connected to the input signal output terminal of the main control circuit, the data signal input terminal of the M-th stage driving circuit is connected to the data signal output terminal of the M-1-th stage driving circuit, and the data signal output terminal of the N-th stage driving circuit is connected to the data signal input terminal of the main control circuit, wherein 1<M≤N;

[0029] The multiple drive signal output terminals of each level of the drive circuit are used to connect to at least one of the second motors. The N-level cascaded drive circuits are used to generate corresponding drive signals according to the control signals and data signals output by the main control circuit to drive the at least one of the second motors to operate.

[0030] In one embodiment, the weak current control board further includes a weak current circuit board body, the main control circuit is arranged on the weak current circuit board body, and the drive circuit is arranged on the weak current circuit board body around the main control circuit.

[0031] In one embodiment, at least one weak current connector is provided on the weak current control board, and multiple drive signal output ends of each level of the drive circuit are connected to at least one of the weak current connectors to connect the drive circuit to the second motor.

[0032] In one embodiment, the main control circuit, each stage driving circuit and the corresponding weak current connectors are arranged in sequence along the same direction on the weak current control board.

[0033] In one embodiment, the fault indication signal output terminal of the drive circuit is connected to the fault indication signal input terminal of the main control circuit; the drive circuit is also used to detect the current and voltage of multiple drive signal output terminals, and when the drive signal output terminal outputs a drive signal and the current value of the drive signal output terminal is greater than a preset current threshold, or when the drive signal output terminal stops outputting the drive signal and the voltage value of the drive signal output terminal is less than a preset voltage threshold, output a fault indication signal to the main control circuit, so that the main control circuit reports corresponding fault information.

[0034] In one embodiment, the drive circuit further includes a first fault register and a second fault register; the drive circuit is further configured to write an overcurrent fault corresponding to the drive signal output terminal into a corresponding position of the first fault register when the drive signal output terminal outputs the drive signal and the current value of the drive signal output terminal is greater than a preset current threshold, and to write a circuit breaker fault corresponding to the drive signal output terminal into a corresponding position of the second fault register when the drive signal output terminal stops outputting the drive signal and the voltage value of the drive signal output terminal is less than a preset voltage threshold.

[0035] The main control circuit is further configured to read the fault information in the first fault register and the second fault register when receiving a fault indication signal, and report the corresponding fault information.

[0036] The present invention further provides an air conditioner, comprising:

[0037] A functional load module, the functional load module comprising a first end surface and a second end surface;

[0038] An electronic control device, comprising:

[0039] Strong current control panel;

[0040] A weak current control panel, the weak current control panel being electrically connected to the strong current control panel;

[0041] The strong current control panel is arranged corresponding to the first end surface, and the weak current control panel is arranged corresponding to the second end surface.

[0042] The technical solution of the present utility model is applied to an air conditioner, wherein the air conditioner includes a functional load module, wherein the functional load module includes a first end face and a second end face; the electric control device includes a high-current control panel and a low-current control panel, wherein the low-current control panel is electrically connected to the high-current control panel; the high-current control panel is arranged corresponding to the first end face, and the low-current control panel is arranged corresponding to the second end face. In this way, by configuring the electric control device as a high-current control panel and a low-current control panel, and respectively arranging them corresponding to the first end face and the second end face of the functional load module, an integrated design of the electric control device and the functional load module is achieved, effectively saving space inside the air conditioner, thereby reducing the volume of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0044] Figure 1 A schematic structural diagram of an embodiment of an electric control device provided by the present utility model;

[0045] Figure 2 A schematic structural diagram of another embodiment of the electronic control device provided by the present utility model;

[0046] Figure 3 A schematic diagram of the circuit structure of an embodiment of the electric control device provided by the present utility model;

[0047] Figure 4 A schematic diagram of the circuit structure of another embodiment of the electric control device provided by the present utility model;

[0048] Figure 5 This is a working timing diagram of an embodiment of the electric control device provided by the utility model;

[0049] Figure 6 This is a working timing diagram of another embodiment of the electric control device provided by the utility model;

[0050] Figure 7 This is a working timing diagram of another embodiment of the electronic control device provided by the utility model.

[0051] Description of Figure Numbers:

[0052] 11. High-voltage control panel; 12. Low-voltage control panel; 13. Low-voltage connector; 14. Main body of the first electric control box; 15. Main body of the second electric control box; 161. Wire conduit; 162. First wire opening; 17. Low-voltage wire passage; 171. Second wire opening; 172. Third wire opening; 18. Mounting part; 19. Blank area; 20. Functional load module; 21. First end face; 22. Second end face; 31. Main control circuit; 41. First-stage drive circuit; 42. Second-stage drive circuit; 43. Third-stage drive circuit; 4N, Nth-stage drive circuit; M, second motor; M1, first-second motor; M2, second motor; M3, third-second motor; M4, fourth-second motor; IC0, main control chip; IC1, first drive chip; IC2, second drive chip.

[0053] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0055] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] The electronic control unit is the core component of the air conditioner, responsible for receiving user commands or program instructions and controlling the air conditioner's operation. The functional load modules 20 (such as the fresh air module, compressor module, and impeller module) are components that perform specific functions within the air conditioner, and their proper operation depends on the effective control of the electronic control unit. However, existing electronic control units and functional load modules 20 typically occupy separate spaces within the air conditioner, making the air conditioner bulky.

[0058] Based on the above problems, the present invention proposes an electric control device.

[0059] See also Figure 1 、 Figure 2 In one embodiment of the present invention, the electronic control device is applied to an air conditioner, wherein the air conditioner may include an indoor unit and an outdoor unit, such as a wall-mounted air conditioner or a cabinet air conditioner. Alternatively, the air conditioner may include only an indoor unit, such as a mobile air conditioner. The air conditioner includes a functional load module 20, which includes a first end surface 21 and a second end surface 22.

[0060] In this embodiment, the functional load module 20 can be one of the functional components of the air conditioner, such as a fresh air module, a compressor module, and a wind wheel module. The functional load module 20 includes a first end face 21 and a second end face 22. In this embodiment, the first end face 21 and the second end face 22 intersect or are arranged opposite to each other. The first end face 21 and the second end face 22 are arranged to intersect, that is, the first end face 21 and the second end face 22 are two adjacent end faces, and the first end face 21 and the second end face 22 are arranged opposite to each other, that is, they are respectively arranged at opposite ends of the functional load module 20. In addition, depending on the actual design and installation requirements of the functional load module 20, the first end face 21 and the second end face 22 can also be any other two end faces. It can be understood that, according to the structural design and functional requirements of the functional load module 20, the first end face 21 and the second end face 22 can be a plane or a curved surface, that is, although the structures of different functional load modules 20 of the air conditioner are different, they also include at least two distinguishable end faces (the first end face 21 and the second end face 22). The utility model designs the layout of the electronic control device based on the above-mentioned first end face 21 and the second end face 22 to improve the overall compactness and integration of the air conditioner, thereby reducing the volume of the air conditioner.

[0061] Please continue reading Figure 1 In this embodiment, the electric control device includes a strong current control board 11 and a weak current control board 12, and the weak current control board 12 is electrically connected to the strong current control board 11; the strong current control board 11 is arranged corresponding to the first end face 21, and the weak current control board 12 is arranged corresponding to the second end face 22.

[0062] It is understandable that the electronic control device is responsible for receiving and processing various commands from the user or programs to ensure that the various functional load modules 20 of the air conditioner can accurately and efficiently perform their corresponding tasks. Specifically, the electronic control device needs to handle both high-voltage, high-current circuit control tasks, such as converting 220V AC mains power into lower-voltage DC power to drive the DC motor in the air conditioner, and low-voltage, low-current circuit signal processing, such as collecting and processing data from various sensors in the air conditioner and receiving and interpreting user commands. It is understandable that handling high-voltage, high-current circuit control tasks generally requires the use of larger components, such as high-power relays, high-voltage capacitors, and filters, to ensure stable transmission and efficient conversion of electrical energy. Meanwhile, handling low-voltage, low-current circuit signals relies more on small, sophisticated electronic components, such as microprocessors, sensor interface circuits, and signal conditioning circuits, to achieve accurate data collection and rapid processing.

[0063] Therefore, in the present embodiment, in order to meet the above-mentioned two circuit control requirements and optimize the spatial layout at the same time, and improve the integration of the electric control device and the functional load module 20, the electric control device in the present embodiment adopts a split design, and the electric control device is designed to include a strong current control board 11 and a weak current control board 12. The strong current control board 11 is used in conjunction with components with larger volume, has stronger power processing capability, and is mainly responsible for processing high voltage, high current circuit control tasks, such as for converting 220V AC mains power into lower voltage DC to drive the DC motor in the air conditioner to rotate. The weak current control board 12 is used in conjunction with electronic components with precise volume, and is mainly responsible for processing low voltage, low current circuit signals, such as the collection, processing and reception and analysis of various sensor data in the air conditioner and user instructions. Its high precision and sensitivity provide a solid foundation for the intelligent control of the air conditioner. The strong current board and the weak current board are connected by a cable for transmitting power supply and data signals between the strong current board and the weak current board. In this embodiment, the electronic control device is configured as a split structure with a high-voltage control panel 11 and a low-voltage control panel 12. This effectively isolates the high-voltage and low-voltage components, further improving the safety and stability of the system. This split layout also facilitates subsequent maintenance and upgrades. If a control panel fails, it can be replaced individually without replacing the entire panel, reducing maintenance costs and time.

[0064] In the present embodiment, the strong current control panel 11 is arranged correspondingly to the first end face 21, and the weak current control panel 12 is arranged correspondingly to the second end face 22. Specifically, the strong current control panel 11 is placed near the first end face 21 of the functional load module 20, and the weak current control panel 12 is correspondingly positioned near the second end face 22. It is understandable that, since the strong current control panel 11 generally includes electronic components with larger volume, the electronic components on the weak current control panel 12 are relatively smaller, making the thickness and volume of the weak current control panel 12 relatively thinner and smaller. Therefore, in the actual installation process, it is necessary to consider the space size of the first end face 21 corresponding position and the second end face 22 corresponding position. For example, when the space corresponding to the first end face 21 is larger and suitable for installing large components, the strong current control panel 11 can be preferentially arranged here, to make full use of the space. And if the space corresponding to the second end face 22 is relatively compact, but sufficient to accommodate the weak current control panel 12 and its precision components, the weak current control panel 12 is then placed here, to make full use of the space. In this way, the electronic control device can be installed close to the functional load module 20, reducing the space waste that may exist between the electronic control device and the functional load module 20 in traditional designs, thereby effectively reducing the overall volume of the air conditioner.

[0065] In this embodiment, the electric control device is applied to an air conditioner, the air conditioner including a functional load module 20, the functional load module 20 including a first end face 21 and a second end face 22; the electric control device including a strong current control board 11 and a weak current control board 12, the weak current control board 12 being electrically connected to the strong current control board 11; the strong current control board 11 being arranged corresponding to the first end face 21, and the weak current control board 12 being arranged corresponding to the second end face 22. In this way, by configuring the electric control device as the strong current control board 11 and the weak current control board 12, and respectively corresponding to the first end face 21 and the second end face 22 of the functional load module 20, an integrated design of the electric control device and the functional load module 20 is achieved, effectively saving space inside the air conditioner, thereby reducing the volume of the air conditioner.

[0066] In a feasible implementation manner, a weak current connector 13 is provided on one side of the weak current control panel 12 , and the air conditioner further includes a panel, and the weak current connector 13 is provided on a side close to the panel.

[0067] It is understandable that during the production and assembly of air conditioners, workers generally assemble and maintain the interior of the air conditioner facing the panel. Therefore, placing the weak-current connector 13 on the side close to the panel not only facilitates workers to quickly connect and debug the weak-current control board 12 during assembly, but also allows for easy access and operation of the weak-current control board 12 during subsequent maintenance or upgrades without having to disassemble too many components, thereby improving overall production efficiency and maintenance convenience.

[0068] Specifically, the weak current connector 13 can be set to multiple, and the weak current control panel 12 can be quickly connected to the various sensors, the step second motor and other low voltage, low current devices of the air conditioner through the multiple weak current connectors 13. The weak current connector 13 can be designed as an interface form that is easy to plug and unplug, such as a pin header, a socket, etc., to ensure a stable and flexible electrical connection between the weak current control panel 12 and the various sensors or the step second motor. At the same time, when the weak current control panel 12 needs to be replaced or upgraded, the staff only needs to simply unplug the weak current connector 13, the old weak current control panel 12 can be removed, and a new weak current control panel 12 can be inserted, which greatly simplifies the maintenance process.

[0069] Furthermore, aligning the side of the weak-current control panel 12 with the weak-current connector 13 also helps optimize the air conditioner's internal structural layout. Because the weak-current control panel 12 primarily processes low-voltage, low-current circuit signals, its operating environment is relatively mild and less susceptible to interference from high voltages and high currents. Therefore, placing the weak-current control panel 12 close to the panel not only facilitates receiving control signals from the panel but also reduces electromagnetic interference with other electronic components to a certain extent, improving the overall stability and reliability of the air conditioner.

[0070] In a feasible embodiment, the electric control device also includes an electric control box, which includes a first electric control box body 14 and a second electric control box body 15; the first electric control box body 14 is arranged corresponding to the first end face 21, and the high-voltage control board 11 is arranged on the first electric control box body 14; the second electric control box body 15 is arranged corresponding to the second end face 22, and the low-voltage control board 12 is arranged on the second electric control box body 15.

[0071] In this embodiment, the electric control box is used to protect and secure the high-current control board 11 and the low-current control board 12 in the electric control device, ensuring their stable operation in a complex and changing working environment. By subdividing the electric control device into two independent electric control box bodies, namely a first electric control box body 14 and a second electric control box body 15, the first electric control box body 14 is arranged in correspondence with the first end face 21 of the functional load module 20 to secure and protect the high-current control board 11, and the second electric control box body 15 is arranged in correspondence with the second end face 22 of the functional load module 20 to provide a protective environment for the low-current control board 12. Specifically, the first electric control box body 14 is arranged near the first end face 21 of the functional load module 20, while the second electric control box body 15 is correspondingly located near the second end face 22. It is understandable that, since the first electric control box body 14 is used to install the strong current control board 11 with a larger fixed volume, and the second electric control box body 15 is used to install the weak current control board 12 with a smaller fixed volume, the volume of the first electric control box body 14 is relatively large relative to the volume of the second electric control box body 15. In the actual installation process, it is necessary to consider the size of the space corresponding to the first end face 21 and the second end face 22. For example, when the space corresponding to the first end face 21 is larger, the first electric control box body 14 can be preferentially arranged there, and the strong current control board 11 can be inserted into the first electric control box body 14 to make full use of the space. When the space corresponding to the second end face 22 is relatively compact, but sufficient to accommodate the weak current control board 12 and its precision components, the weak current control board 12 can be placed there to make full use of the space. Through the design of this split electric control box, not only is effective isolation and protection of strong and weak currents achieved, but the overall structure of the electric control device and the installation between the functional load module 20 are also made more compact and reasonable. In actual applications, the installation and removal of the electric control box has become more convenient and quick, improving the production and maintenance efficiency of the air conditioner.

[0072] In a feasible embodiment, the electric control device also includes a high-voltage electric wire connected to the high-voltage control board 11 and a low-voltage electric wire connected to the low-voltage control board 12; the first electric control box body 14 is provided with a high-voltage wire passing portion, and the high-voltage wire passing portion is used to limit the high-voltage wire; the second electric control box body 15 is provided with a low-voltage wire passing portion 17, and the low-voltage wire passing portion 17 is used to limit the low-voltage wire.

[0073] In this embodiment, the strong and weak electric wires are respectively limited by their own dedicated wire passing parts. This design not only effectively avoids mutual interference between the wires, but also ensures the safety and reliability of the wires in complex working environments. The strong and weak electric wire passing parts 17 can use structures such as slots, clamps, and pipes to fix and limit the strong and weak electric wires to prevent the risk of wear or short circuit when they move or vibrate inside the air conditioner. In addition, the strong and weak electric wire passing parts can be set to insulating materials, such as plastic or rubber, to further isolate and protect the strong and weak electric wires, and avoid safety hazards caused by current leakage or short circuit.

[0074] In a feasible embodiment, the high-voltage line passing portion includes a line passing conduit 161, and the high-voltage line can be connected to the air conditioner outdoor unit or the external power supply through the line passing conduit 161. In this embodiment, the line passing conduit 161 is arranged in the first electric control box body 14, and the first end is arranged in the electric control box body 14 at a position corresponding to the high-voltage control board 11, and the second end extends to the outside of the first electric control box body 14, so as to facilitate the connection of the high-voltage line to the external power supply or the air conditioner outdoor unit. In this embodiment, the external power supply can be AC ​​power, a generator or other power supply equipment. The line passing conduit 161 not only provides a channel dedicated to high-voltage and high-current transmission for connection to an external power supply or an air conditioner outdoor unit, ensuring the safety of the high-voltage line during connection and use, but also ensures the orderly arrangement of the high-voltage line, and reduces the wear and damage that the high-voltage line may suffer during the connection process, thereby enhancing the overall durability of the electric control device.

[0075] In one feasible embodiment, the wire conduit 161 is disposed on the first electrical control box body 14 and is located near the second electrical control box body 15. This arrangement allows the high-voltage power line to be connected to a position between the weak-current control board 12 and the strong-current control board 11. In this way, when a power supply circuit for voltage processing is provided at the location corresponding to the wire conduit 161 on the strong-current control board 11, the distance between the high-voltage power line and the electrical components on the strong-current control board 11 and / or the electrical components on the weak-current control board 12 can be shortened.

[0076] In a feasible embodiment, the air conditioner includes a first motor and / or an auxiliary heating module, the high-voltage control panel 11 includes a high-voltage connector, and the high-voltage wire passing portion includes a first wire passing port 162 on the first electric control box body corresponding to the first motor and / or auxiliary heating module, and the high-voltage wire can be connected to the first motor and / or the auxiliary heating module through the first wire passing port 162.

[0077] In this embodiment, the first motor is the fan motor of the air conditioner. Since the fan motor requires a large current to drive, the first motor is connected to the high-voltage control board 11 to ensure that the fan motor obtains a stable and sufficient power supply. At the same time, the auxiliary heating module, as a component that provides auxiliary heating for the air conditioner in a low-temperature environment, is also connected to the high-voltage control board 11 so that the high-voltage control board 11 provides it with high-voltage support. Since the first wire port 162 is arranged corresponding to the first motor and / or the auxiliary heating module, the high-voltage wire is connected to the first motor and / or the auxiliary heating module through the first wire port 162, which reduces line detours, shortens the power transmission distance, improves the transmission efficiency of electric energy, and is conducive to the neat wiring of the high-voltage wires.

[0078] In one feasible embodiment, the high-voltage connector on the high-voltage control panel 11 is arranged corresponding to the first wire port 162 to avoid cluttered wiring of the high-voltage wires on the high-voltage control panel 11, improve the overall neatness of the high-voltage control panel 11, and facilitate maintenance of the high-voltage control panel. At the same time, it can further reduce circuitous wiring, shorten the power transmission distance, and improve the transmission efficiency of power energy.

[0079] In a feasible embodiment, the weak current line passing portion 17 is arranged along the circumferential side of the weak current control board 12; a weak current connector 13 is provided on one side of the weak current control board 12, and the weak current connector 13 is arranged on the weak current control board 12 at an edge position corresponding to the weak current line passing portion 17.

[0080] In this embodiment, the weak-current wire-passing portion 17 is designed along the circumferential side of the weak-current control panel 12, which not only ensures convenient connection between the weak-current wires and the weak-current control panel 12, but also optimizes the spatial layout within the second electric control box body 15. In addition, since the weak-current connector 13 is provided at an edge position on the weak-current control panel 12 corresponding to the weak-current wire-passing portion 17, the weak-current wires connected to the weak-current connector 13 can be directly led out from the edge position of the weak-current control panel 12, avoiding the wiring harness from crossing or overlapping on the surface of the weak-current control panel 12, making the layout of the weak-current control panel 12 more compact and effectively utilizing the limited space within the second electric control box body 15.

[0081] In a feasible embodiment, the air conditioner also includes at least one second motor; the weak-current line passing portion is provided with a second line passing opening 171 corresponding to the connector, and the second electric control box body is provided with a third line passing opening 172 corresponding to the weak-current line passing portion, and the weak-current electric wire can be connected to the functional load module and / or the second motor through the second line passing opening 171, the weak-current line passing portion 171 and the third line passing opening 172.

[0082] In this embodiment, the second motor is a motor other than the fan motor in the air conditioner, such as a motor for controlling the air conditioner to sweep the air up and down, sweep the air left and right, or adjust the wind direction. Since the current required by these motors is relatively small, they are connected to the weak-current control board 12 and finely controlled by the weak-current control board 12. In this embodiment, a second wire-passing port 171 is specially provided on the weak-current wire-passing portion 17, and a third wire-passing port 172 is provided on the second electric control box body corresponding to the weak-current wire-passing portion. This allows the weak-current wire to enter the weak-current wire-passing portion 17 through the second wire-passing port 171, and then be led out through the third wire-passing port 173, and finally be connected to the functional load module and / or the second motor, thereby reducing line detours and ensuring the safety and stability of the weak-current wire during the connection process.

[0083] In a feasible embodiment, a blank area is provided on the weak-current control panel 12 corresponding to the third wire-passing opening 173. Since the weak-current connector 13 is provided on the weak-current control panel 12, and the weak-current control panel 12 is provided in the second electric control box body 15, and the second electric control box body 15 is provided with the third wire-passing opening 173. Therefore, if a weak-current wire is connected to the weak-current connector 13 and extends out of the box body through the third wire-passing opening 173, the weak-current wire may contact the surface of the weak-current control panel 12. Therefore, a blank area is provided on the weak-current control panel 12 corresponding to the position of the third wire-passing opening 173, and no components are provided in the blank area to prevent the weak-current wire harness from contacting the components on the weak-current control panel 12 during installation, after long-term use, and during testing, resulting in damage to the components or damage to the surface of the weak-current wire harness, causing the conductive metal in the harness, such as the iron core, to contact the exposed components on the circuit board, thereby effectively improving safety.

[0084] In a feasible embodiment, the electric control box is provided with a mounting member 18, and the mounting member 18 is used to fix the electric control box to the air conditioner.

[0085] In this embodiment, the mounting member 18 can be a structure such as a bolt, a clip, or a hook, which is used to firmly fix the electric control box in the appropriate position of the air conditioner. The mounting member 18 is made of high-strength, corrosion-resistant materials, such as stainless steel, aluminum alloy, engineering plastic, etc., to ensure its stability and reliability during long-term use. Specifically, the mounting member 18 can be designed as a metal plate with threaded holes, and the electric control box can be connected to the frame or support structure of the air conditioner by bolts; or an elastic clip design can be used to use the elastic deformation of the clip to firmly clip the electric control box to the corresponding part of the air conditioner. In addition, some mounting members 18 can also be equipped with shock-absorbing pads or buffering materials to reduce the vibration and noise of the electric control box during the operation of the air conditioner, thereby improving the user experience.

[0086] In one feasible embodiment, the electric control device further includes a limiting hinge (not shown) by which the first electric control box body 14 and the second electric control box body 15 are hingedly connected. The limiting hinge is connected to the first electric control box body 14 and the second electric control box body 15, respectively, so that the first electric control box body 14 and the second electric control box body 15 can rotate relative to each other and remain fixed at a preset angle.

[0087] In this embodiment, the limit hinge can be made of high-quality metal or alloy materials to ensure strong bearing capacity, corrosion resistance, and long service life. Furthermore, the rotating portion of the limit hinge should be designed with an appropriate damping or locking mechanism so that it can be automatically or manually locked when a preset angle is reached to prevent accidental rotation. Furthermore, to ensure a stable and reliable connection between the electric control box and the limit hinge, reinforcing ribs can be added at the connection or a special fastening method, such as welding or threaded connection, can be used. By providing a limit hinge between the first electric control box body 14 and the second electric control box body 15, the two can rotate relative to each other within a certain range and remain fixed at a preset angle. This facilitates adjustment of the orientation and position of the electric control box according to different functional load modules 20, and maintains the fixed position when both the first electric control box body 14 and the second electric control box body 15 are in close contact with the functional load module 20. This improves the versatility of the electric control device while reducing the space waste that may exist between the electric control device and the functional load module 20 in traditional designs, thereby effectively reducing the overall size of the air conditioner.

[0088] In one possible implementation, reference Figure 3 The air conditioner also includes multiple second motors. The weak current control board 12 includes a main control circuit 31 and N-stage cascaded drive circuits (a first-stage drive circuit 41, a second-stage drive circuit 42, a third-stage drive circuit 43...an N-stage drive circuit 4N). The control signal input end of each stage of the drive circuit is respectively connected to the control signal output end of the main control circuit 31, the data signal input end of the first-stage drive circuit 41 is connected to the input signal output end of the main control circuit 31, the data signal input end of the M-stage drive circuit is connected to the data signal output end of the M-1-stage drive circuit, and the data signal output end of the N-stage drive circuit 4N is connected to the data signal input end of the main control circuit 31, where 1<M≤N; the multiple drive signal output ends of each stage of the drive circuit are used to connect to multiple second motors, and the N-stage cascaded drive circuit is used to generate a corresponding drive signal according to the control signal and data signal output by the main control circuit 31 to drive at least one of the second motors to work.

[0089] In this embodiment, the multiple second motors are stepper motors, which are used to precisely control various air conditioner operations, such as fan speed, damper opening and closing angles, and compressor start and stop. The main control circuit 31 includes a main control chip IC0, which can be a microcontroller (MCU), digital signal processor (DSP), or other type of programmable logic device. This chip processes user input commands, sensor signals, and feedback from other parts of the air conditioner, generating corresponding control signals and data signals and sending them to each level of the drive circuit. Each level of the drive circuit includes a driver chip that converts the control signals and data signals into drive signals that can be recognized by the second motors, thereby achieving precise control of the multiple second motors.

[0090] In this embodiment, the control signal output terminal of the main control circuit 31 includes a clock signal output terminal, a data latch signal output terminal, and an enable signal output terminal. The control signal input terminal of each driver circuit includes a clock signal input terminal connected to the clock signal output terminal of the main control circuit 31, a data latch signal input terminal connected to the data latch signal output terminal of the main control circuit 31, and an enable signal input terminal connected to the enable signal output terminal of the main control circuit 31. When a driver circuit of a certain level enters the operating state, the enable signal output terminal of the main control circuit 31 outputs an enable signal in advance, activating the driver circuit of that level, so that the driver circuit latches the corresponding data signal output by the main control circuit 31 into the register inside the driver chip on the rising edge of the data latch signal output by the main control circuit 31. During a read operation, the driver chip latches data on the rising edge of the clock signal, and during a write operation, it outputs data on the falling edge of the clock signal.

[0091] In one embodiment, reference Figure 4 、 Figure 5 The driver chip has eight output ports, and the data register within the driver chip is 8 bits, corresponding to the output levels of its eight drive signal output terminals. Each of the four drive signal output terminals is connected to a second motor, so each driver circuit stage can drive two second motors. Writing a 1 to the data register via a write operation causes the corresponding port to output a high level; writing a 0 to the data register causes the corresponding port to output a low level. The main control circuit 31 uses a preset program to set the output timing of the clock signal output terminal, data latch signal output terminal, and enable signal output terminal to perform write operations on the driver chip. When the data latch signal transitions from high to low and remains low, the serial driver chip sequentially latches the data input from the main control circuit 31 into the internal register at each rising edge of the clock signal. Over a total of eight rising edges, the 8 bits of data are sequentially cached within the serial driver chip. At this point, the main control circuit 31 pulls the data latch signal from a low level to a high level. At this rising edge of the data latch signal, the cached data within the driver chip is immediately updated to the data register.

[0092] In this embodiment, the technical solution of the present invention is described by taking M equal to 2, that is, a two-stage cascade drive circuit as an example. Among them, the first-stage drive circuit 41 includes a first drive chip IC1, the second-stage drive circuit 42 includes a second drive chip IC2, the second motor includes a first second motor M1, a second motor M2, a third second motor M3 and a fourth second motor M4, the first drive chip IC1 is electrically connected to the first second motor M1 and the second motor M2, respectively, and the second drive chip IC2 is electrically connected to the third second motor M3 and the fourth second motor M4, respectively. Figure 6 When the main control circuit 31 performs a write operation on the two-stage drive circuit, it first maintains the data latch signal at a low level. During the first eight clock cycles, the data signal output by the main control circuit 31 is first cached in the first driver chip IC1, but the first driver chip IC1 does not output the data signal to the second driver chip IC2. From the 9th to the 16th clock cycles, the main control circuit 31 caches the new 8-bit data signal to the first driver chip IC1. The first driver chip IC1 then sequentially outputs the data signals cached during the first eight clock cycles to the second driver chip IC2, which then caches them. After the 16 clock cycles, the main control circuit 31 sets the data latch signal to a high level. On the rising edge of the data latch signal, the data signal cached in the second driver chip IC2 is immediately updated to the internal data register, causing the corresponding drive signal output terminal level to change accordingly. After the main control circuit 31 performs the write operation according to the above timing sequence, each stage of the drive circuit can then sequentially control the corresponding second motor based on the received control and data signals. Similarly, when M is greater than 2, that is, there are more than two stages of cascade drive circuits, the technical solution of this embodiment is still applicable. As the number of stages increases, although the data transmission and processing process will become more complicated accordingly, its control logic and operation process remain consistent.

[0093] It is understandable that in the prior art, the second motor drive of the air conditioner, the input and output ports of the drive circuit correspond one to one, that is, the number of paths of the drive signal to be output corresponds to the logarithm of the input and output of the drive circuit, and the multiple inputs of the drive circuit are respectively connected to the multiple drive signal output pins of the main control chip IC0 in one to one correspondence, thereby excessively occupying the pin resources of the main control chip IC0, making the pin resource utilization rate of the main control chip IC0 low. In the utility model, the drive circuit comprising the main control circuit 31 and the N-level cascade is realized by the weak current control board 12, the serial transmission and processing of the drive signal is realized, the pin resources of the main control circuit 31 chip are greatly saved, the main control circuit 31 only needs a few control signal and data signal output ports, and can drive multiple second motors by the cascaded drive circuit, realizing effective sharing and efficient utilization of resources. In addition, the cascaded drive circuit in the present embodiment not only simplifies the circuit design, but also improves the stability and reliability of the system. Since each level of the driving circuit has independent data processing capabilities and cache mechanisms, when a level of driving circuit fails, the driving circuits of other levels can still work normally, avoiding the impact of single-point failure on the entire system.

[0094] In a feasible embodiment, the weak current control panel 12 also includes a weak current circuit board body, the main control circuit 31 is arranged on the weak current circuit board body, and the drive circuit is arranged around the main control circuit in the weak current circuit board body. In the present embodiment, the weak current circuit board body is the substrate of the weak current control panel. In the layout of the weak current circuit board body, the main control circuit 31 is arranged in the middle position, which is convenient for signal transmission and command control with the drive circuits at all levels. And the drive circuits at all levels are arranged around the main control circuit 31, so that the transmission and processing of signals are more efficient and orderly.

[0095] In a feasible embodiment, at least one weak current connector 13 is provided on the weak current control board 12, and multiple drive signal output terminals of the drive circuit of each level are connected to at least one of the weak current connectors 13, so that the drive circuit is connected to the second motor. In the present embodiment, the multiple drive signal output terminals of the drive circuit are electrically connected to the second motor through the weak current connector 13, thereby achieving fast and stable transmission of the drive signal. In a specific implementation, the weak current connector 13 can be designed to have a structure with multiple pins or jacks, each pin or jack corresponding to a drive signal output terminal, ensuring that the drive signal can be accurately transmitted to the corresponding second motor.

[0096] In a feasible embodiment, described main control circuit 31, every level of drive circuit and corresponding weak current plug connector 13 are arranged in sequence along the same direction at described weak current control panel 12. Main control circuit 31, as core control unit, is positioned at one end of whole weak current control panel 12, has guaranteed its effective management and control to drive circuit at different levels. Subsequently, along the extension direction of weak current control panel 12, drive circuit at different levels is arranged in sequence, has formed clear data and signal transmission path.Through above-mentioned setting, shortened the wiring length on the weak current control panel 12, made the layout of whole weak current control panel 12 more compact, reduced the interference that signal is subjected to in the transmission process, thereby improved stability and the reliability of weak current control panel.

[0097] In a feasible embodiment, the fault indication signal output end of the drive circuit is connected to the fault indication signal input end of the main control circuit 31; the drive circuit is also used to detect the current and voltage of multiple drive signal output ends, and when the drive signal output end outputs the drive signal and the current value of the drive signal output end is greater than the preset current threshold, or when the drive signal output end stops outputting the drive signal and the voltage value of the drive signal output end is less than the preset voltage threshold, the fault indication signal is output to the main control circuit 31, so that the main control circuit 31 reports the corresponding fault information.

[0098] In this embodiment, the driving circuit further includes a fault indication signal output terminal, and the main control circuit 31 further includes a data indication signal input terminal. The fault indication signal output terminal of the driving circuit is connected to the fault indication signal input terminal of the main control circuit 31.

[0099] To further ensure the stable operation of the air conditioner's second motor drive system, this embodiment also introduces a fault diagnosis and early warning mechanism. Specifically, each stage of the drive circuit is capable of detecting the current and voltage conditions at each drive signal output terminal. When the current value of the drive signal output terminal increases abnormally when outputting the drive signal, exceeding a preset current threshold, it can be determined that an overcurrent fault exists at the drive signal output terminal. When the drive signal output terminal of the driver chip is turned off, a pull-down current exists within the chip, pulling the output terminal voltage down. If the voltage value detected at this time is not lower than the preset voltage threshold, it can be determined that an open circuit fault may exist at the drive signal output terminal. When the drive circuit detects the above abnormal condition, it will immediately send a fault indication signal to the main control circuit 31 via the fault indication signal output terminal. This fault indication signal contains the specific type and location information of the fault, allowing the main control circuit 31 to quickly identify and respond to the fault.

[0100] In a feasible embodiment, the driving circuit also includes a first fault register and a second fault register; the driving circuit is further used to write the overcurrent fault of the corresponding driving signal output end into the corresponding position of the first fault register when the driving signal output end outputs the driving signal and the current value of the driving signal output end is greater than the preset current threshold, and to write the open circuit fault of the corresponding driving signal output end into the corresponding position of the second fault register when the driving signal output end stops outputting the driving signal and the voltage value of the driving signal output end is less than the preset voltage threshold; the main control circuit 31 is also used to read the fault information in the first fault register and the second fault register when receiving the fault indication signal, and report the corresponding fault information.

[0101] In this embodiment, the first fault register and the second fault register are each used to record different types of fault information. When the driver circuit detects that a current at a drive signal output terminal abnormally increases when outputting a drive signal, i.e., exceeds a preset current threshold, this typically indicates an overcurrent fault at that output terminal. In this case, the driver circuit immediately writes the overcurrent fault information into the corresponding position of the first fault register. Similarly, if the detected voltage value falls below the preset voltage threshold after the drive signal output terminal stops outputting the drive signal, this may indicate an open circuit fault at that output terminal, and the corresponding open circuit fault information is recorded in the corresponding position of the second fault register. It is understood that the first register and the second register may also utilize a register with a larger number of bits than or equal to the first register and the second register to simultaneously record multiple types of fault information. When an overcurrent fault is determined to be present at the drive signal output terminal, the corresponding bit value of the first indication register is set to 1; otherwise, it is set to 0. When an open circuit fault is determined to be present at the drive signal output terminal, the corresponding bit value of the second register is set to 1; otherwise, it is set to 0.

[0102] In this embodiment, the technical solution of the present invention is described by taking M equal to 2, that is, a two-stage cascade drive circuit as an example. Among them, the first-stage drive circuit 41 includes a first drive chip IC1, and the second-stage drive circuit 42 includes a second drive chip IC2. Figure 7In this embodiment, when reading the fault register, the main control circuit 31 first sets the data latch signal and clock signal to a low level, then sets the data latch signal to a high level, and then sequentially outputs the clock pulse signal. During the first 16 clock signal cycles, the first driver chip IC1 sequentially outputs the data in the fault register to the data signal input terminal of the second driver chip IC2 via the data signal output terminal. During the next 16 clock signal cycles, the first driver chip IC1 outputs the data in the fault register cached by the first driver chip IC1. When the main control circuit 31 detects that the fault indication signal is at a low level, it performs the above-mentioned operation of reading the fault register and determines the specific fault type and location. Similarly, when M is greater than 2, that is, there are more than two stages of cascaded driver circuits, the main control circuit 31 will use a similar communication protocol and sequential logic to read the fault register data of each stage of the driver circuit step by step. Specifically, the main control circuit 31 first sends a global data request signal, which passes through each stage of the driver circuit in sequence, triggering each stage to prepare the data in the fault register. Then, the main control circuit 31 will establish a communication connection with each level of driving circuit in turn according to a preset order, and send data latch and clock signals to synchronously read the fault information of each level of driving circuit.

[0103] In the air-conditioning system, the second motor is mainly responsible for driving the air guide plate and controlling the opening and closing functions of various valves. This embodiment collects fault data through the main control circuit 31. Once a fault is detected, the air-conditioning operation is stopped immediately to prevent the fault from further deteriorating. For example, if an open circuit fault is detected in the second stepper motor of the air guide plate, it indicates that the air guide plate cannot be opened and controlled normally. In this case, if the air conditioner continues to cool and the air guide plate cannot supply air, it will cause condensation and dripping at the air outlet, so the cooling must be stopped immediately and the fault must be reported. In addition, if an overcurrent fault is detected in the second stepper motor of the fresh air system valve, it may indicate that there is a structural jamming problem in the valve. At this time, the fresh air system should be stopped immediately and the fault reported to avoid damage to the fresh air system or a decrease in indoor air quality.

[0104] In this embodiment, the air conditioner includes a functional load module 20, which includes a first end face 21 and a second end face 22. The electric control device includes a strong current control board 11 and a weak current control board 12, and the weak current control board 12 is electrically connected to the strong current control board 11. The strong current control board 11 is disposed correspondingly to the first end face 21, and the weak current control board 12 is disposed correspondingly to the second end face 22. In this way, by configuring the electric control device as the strong current control board 11 and the weak current control board 12, and disposing them correspondingly to the first end face 21 and the second end face 22 of the functional load module 20, respectively, an integrated design of the electric control device and the functional load module 20 is achieved, effectively saving space inside the air conditioner, thereby reducing the volume of the air conditioner.

[0105] The present invention also provides an air conditioner, comprising a functional load module and an electronic control device, wherein the functional load module comprises a first end face and a second end face; the electronic control device comprises a high-current control panel and a low-current control panel, wherein the low-current control panel is electrically connected to the high-current control panel; the high-current control panel is disposed corresponding to the first end face, and the low-current control panel is disposed corresponding to the second end face. The specific structure of the electronic control device is similar to that of the above-mentioned embodiments. Since the present air conditioner adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here.

[0106] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electronic control device, used in an air conditioner, characterized in that: The air conditioner includes a functional load module, and the functional load module includes a first end surface and a second end surface; the electronic control device includes: Strong current control panel; A weak current control panel, the weak current control panel being electrically connected to the strong current control panel; The strong current control panel is arranged corresponding to the first end surface, and the weak current control panel is arranged corresponding to the second end surface.

2. The electronic control device according to claim 1, wherein: The first end surface and the second end surface intersect or are arranged opposite to each other.

3. The electronic control device according to claim 1, wherein: A weak current connector is provided on one side of the weak current control panel. The air conditioner further comprises a panel. The weak current connector is provided on a side close to the panel.

4. The electronic control device according to claim 1, wherein: The electric control device further comprises an electric control box, and the electric control box comprises a first electric control box body and a second electric control box body; The first electric control box body is arranged corresponding to the first end surface, and the high-voltage control board is arranged on the first electric control box body; The second electric control box body is arranged corresponding to the second end surface, and the weak current control board is arranged on the second electric control box body.

5. The electronic control device according to claim 4, characterized in that: The electric control device further comprises a strong electric wire connected to the strong electric control panel and a weak electric wire connected to the weak electric control panel; The first electric control box body is provided with a strong current wire passing portion, and the strong current wire passing portion is used to limit the strong current wire; The second electric control box body is provided with a weak current wire passing portion, and the weak current wire passing portion is used to limit the weak current wire.

6. The electronic control device according to claim 5, wherein: The high-voltage wire passing portion includes a wire passing pipe, and the high-voltage wire can be connected to the air conditioner outdoor unit or an external power supply through the wire passing pipe.

7. The method according to claim 6, wherein: The wire-passing conduit is arranged on the first electric control box body and is close to the second electric control box body.

8. The electronic control device according to claim 5, wherein: The air conditioner includes a first motor and / or an auxiliary heating module, the high-voltage control panel includes a high-voltage connector, and the high-voltage wire passing portion includes a first wire passing port on the first electric control box body corresponding to the first motor and / or the auxiliary heating module, and the high-voltage wire can be connected to the first motor and / or the auxiliary heating module through the first wire passing port.

9. The electronic control device according to claim 8, wherein: The high-voltage connector is arranged corresponding to the first wire-passing port.

10. The electronic control device according to claim 5, wherein: The weak current wire passing portion is arranged along the peripheral side of the weak current control panel; A weak current connector is provided on one side of the weak current control board. The weak current connector is provided on an edge of the weak current control board corresponding to the weak current wire passing portion.

11. The electronic control device according to claim 10, wherein: The air conditioner also includes at least one second motor; the weak-current wire passing portion is provided with a second wire passing port corresponding to the connector, and the second electric control box body is provided with a third wire passing port corresponding to the weak-current wire passing portion. The weak-current wire can be connected to the functional load module and / or the second motor through the second wire passing port, the weak-current wire passing portion and the third wire passing port.

12. The electronic control device according to claim 11, wherein: A blank area is provided on the weak current control panel corresponding to the third wire passing port.

13. The electronic control device according to claim 4, wherein: The electric control box is provided with a mounting piece, and the mounting piece is used to fix the electric control box to the air conditioner.

14. The electronic control device according to claim 4, wherein: The electric control device further includes a limiting hinge, and the first electric control box body and the second electric control box body are hingedly connected via the limiting hinge.

15. The electronic control device according to any one of claims 1 to 14, characterized in that: The air conditioner further includes a second motor, and the weak current control panel includes: Main control circuit; N stages of cascaded driving circuits, wherein the control signal input terminal of each stage of the driving circuit is respectively connected to the control signal output terminal of the main control circuit, the data signal input terminal of the first stage driving circuit is connected to the input signal output terminal of the main control circuit, the data signal input terminal of the M-th stage driving circuit is connected to the data signal output terminal of the M-1-th stage driving circuit, and the data signal output terminal of the N-th stage driving circuit is connected to the data signal input terminal of the main control circuit, wherein 1<M≤N; The multiple drive signal output terminals of each level of the drive circuit are used to connect to at least one of the second motors. The N-level cascaded drive circuits are used to generate corresponding drive signals according to the control signals and data signals output by the main control circuit to drive the at least one of the second motors to operate.

16. The electronic control device according to claim 15, wherein: The weak current control board further comprises a weak current circuit board body, the main control circuit is arranged on the weak current circuit board body, and the drive circuit is arranged on the weak current circuit board body around the main control circuit.

17. The electronic control device according to claim 15, wherein: At least one weak current connector is provided on the weak current control board, and the multiple drive signal output ends of each level of the drive circuit are connected to at least one weak current connector to connect the drive circuit to the second motor.

18. The electronic control device according to claim 17, wherein: The main control circuit, each level of driving circuit and the corresponding weak current connectors are arranged in sequence along the same direction on the weak current control board.

19. The electronic control device according to claim 15, wherein: The fault indication signal output end of the drive circuit is connected to the fault indication signal input end of the main control circuit; the drive circuit is also used to detect the current and voltage of multiple drive signal output ends, and when the drive signal output end outputs a drive signal and the current value of the drive signal output end is greater than a preset current threshold, or when the drive signal output end stops outputting the drive signal and the voltage value of the drive signal output end is less than a preset voltage threshold, output a fault indication signal to the main control circuit, so that the main control circuit reports corresponding fault information.

20. The electronic control device according to claim 19, wherein: The drive circuit further includes a first fault register and a second fault register; the drive circuit is further configured to write an overcurrent fault corresponding to the drive signal output terminal into a corresponding position of the first fault register when the drive signal output terminal outputs the drive signal and the current value of the drive signal output terminal is greater than a preset current threshold, and to write a circuit breaker fault corresponding to the drive signal output terminal into a corresponding position of the second fault register when the drive signal output terminal stops outputting the drive signal and the voltage value of the drive signal output terminal is less than a preset voltage threshold; The main control circuit is further configured to read the fault information in the first fault register and the second fault register upon receiving the fault indication signal, and report the corresponding fault information.

21. An air conditioner, characterized in that: The air conditioner comprises: A functional load module, the functional load module comprising a first end surface and a second end surface; The electronic control device according to any one of claims 1 to 20, comprising: Strong current control panel; A weak current control panel, the weak current control panel being electrically connected to the strong current control panel; The strong current control panel is arranged corresponding to the first end surface, and the weak current control panel is arranged corresponding to the second end surface.

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