Electric control box and heating device

Abstract

The application discloses an electric control box and a heating and ventilation device. The electric control box comprises a main box body, a first circuit module, a second circuit module and an electric connection structure. The main box body is provided with a first cavity and a second cavity. The first cavity and the second cavity are oppositely spaced in the thickness direction of the main box body. The part of the main box body between the first cavity and the second cavity is provided with a first opening. The first opening is connected with the first cavity and the second cavity. The first circuit module is arranged in the first cavity, and the second circuit module is arranged in the second cavity. The electric connection structure is arranged in the first opening and connected with the first circuit module and the second circuit module at both ends to electrically connect the first circuit module and the second circuit module. The function division of the electric control box is more clear, and the management and maintenance are facilitated. When a certain circuit module needs to be maintained or repaired, the problem can be positioned more quickly, the influence on another circuit module is reduced, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and in particular to an electrical control box and HVAC equipment. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) systems are an important component of building environmental control, encompassing multiple systems such as heating, ventilation, and air conditioning. They are widely used in residential, commercial, and industrial buildings. Their main function is to create a comfortable and healthy living and working environment by regulating parameters such as indoor temperature, humidity, and airflow.

[0003] As a key component of HVAC equipment, the electrical control unit is primarily responsible for controlling and managing the operation of HVAC equipment, especially the outdoor unit. Its main functions include controlling the operation of the compressor and fan, frequency converter control, and communication with other components. In related technologies, the various modules of the electrical control unit are typically assembled and protected within a single enclosure, commonly referred to as an electrical control box. However, in some designs, the modules of the electrical control box are integrated and laid flat within a single cavity. This design leads to unclear functional divisions within the control box, mutual interference between modules, and an increased risk of malfunction. Summary of the Invention

[0004] This application provides an electrical control box and HVAC equipment, which can improve the division of functional areas inside the electrical control box.

[0005] In a first aspect, embodiments of this application provide an electronic control box, including:

[0006] The main box body has a first cavity and a second cavity inside. The first cavity and the second cavity are arranged at intervals relative to each other in the thickness direction of the main box body. The portion of the main box body located between the first cavity and the second cavity has a first opening, which connects the first cavity and the second cavity.

[0007] A first circuit module and a second circuit module, wherein the first circuit module is disposed within the first cavity, and the second circuit module is disposed within the second cavity; and

[0008] An electrical connection structure is provided through the first opening, and its two ends are respectively connected to the first circuit module and the second circuit module to electrically connect the first circuit module and the second circuit module.

[0009] In some embodiments, the main housing includes a heat dissipation structure, a first cover, and a second cover. The first cover cooperates with the heat dissipation structure to form the first cavity, and the second cover cooperates with the heat dissipation structure to form the second cavity.

[0010] The heat dissipation structure has a first side and a second side, the first cavity and the second cavity are respectively located on the first side and the second side of the heat dissipation structure, and the heat dissipation structure is provided with the first opening.

[0011] In some embodiments, the power connection structure includes:

[0012] An insulating base is installed at the first opening; and

[0013] A power connection post is disposed on the insulating base and passes through the first opening, with its two ends respectively connected to the first circuit module and the second circuit module.

[0014] In some embodiments, the first circuit module includes a first substrate with a first power contact hole, the second circuit module includes a second substrate with a second power contact hole, and the two ends of the power contact post are respectively provided with a first connection hole and a second connection hole. The first connection hole and the first power contact hole are electrically connected by a connector, and the second connection hole and the second power contact hole are electrically connected by a connector.

[0015] In some embodiments, the heat dissipation structure is further provided with a first support column and a second support column, wherein the first support column is located in the first cavity and the second support column is located in the second cavity;

[0016] The first substrate is provided with a first mounting hole, and the second substrate is provided with a second mounting hole. The first support post is connected to the first mounting hole to support the first substrate, and the second support post is connected to the second mounting hole to support the second substrate.

[0017] In some embodiments, the first support column is further provided with a first positioning protrusion, and the first substrate is further provided with a first positioning hole corresponding to the first positioning protrusion.

[0018] And / or, the second support column is further provided with a second positioning protrusion, and the second substrate is further provided with a second positioning hole corresponding to the second positioning protrusion.

[0019] In some embodiments, the insulating base includes a base body and a limiting part and a snap-fit ​​part respectively connected to the base body, the power contact post passes through the base body, the limiting part protrudes from the outer wall surface of the base body, and the snap-fit ​​part and the limiting part are spaced apart along the depth direction of the first opening;

[0020] The heat dissipation structure also has a groove recessed in the inner wall of the first opening, wherein the limiting part abuts against the end face of the connection to the first opening, the snap-fit ​​part snaps into the groove, and the limiting part and the snap-fit ​​part cooperate to clamp the heat dissipation structure.

[0021] In some embodiments, a guide protrusion is provided on one of the outer wall surface of the seat portion and the inner wall surface of the first opening, and a guide groove is provided on the other of the outer wall surface of the seat portion and the inner wall surface of the first opening. The guide groove extends along the insertion direction of the insulating seat, and the guide protrusion is inserted into the guide groove.

[0022] In some embodiments, a third circuit module, a third cover, and electrical connection wires are also included;

[0023] The third cover and the heat dissipation structure cooperate to form a third cavity. The third circuit module is disposed in the third cavity. The electrical connection line extends from the first cavity to the third cavity to electrically connect the third circuit module and the first circuit module.

[0024] In some embodiments, the first circuit module is a driver board and the second circuit module is a filter board; two driver boards are laid flat in the first cavity, and two power connection structures are provided;

[0025] The two power connection structures are respectively disposed on the side of the two drive boards that are close to each other, and the two drive boards are electrically connected to the filter board through a corresponding power connection structure.

[0026] In some embodiments, the two drive boards are arranged symmetrically at the center;

[0027] And / or, the two electrical connection structures are arranged symmetrically at the center.

[0028] In some embodiments, a cable bridge is also included, which is disposed in the first cavity and has a first cable routing channel and a second cable routing channel that are relatively independently disposed.

[0029] The electrical connection cable includes a power supply cable and a signal cable, wherein the portion of the power supply cable located within the first cavity is arranged in the first wiring channel, and the portion of the signal cable located within the first cavity is arranged in the second wiring channel.

[0030] In some embodiments, the third circuit module includes a main control power board and a main control board that are electrically connected, the main control board being located on the side of the main control power board facing the third cover, the power supply line being connected to the main control power board, and the signal line being connected to the main control board.

[0031] In some embodiments, the cable bridge includes a first bracket and a second bracket;

[0032] The first bracket has a first wiring channel formed inside it. The first bracket spans the side of the drive board facing away from the second cavity, which is close to the third circuit module. The first bracket extends from the location of the corresponding power connection structure on the drive board toward the third circuit module.

[0033] The second bracket has a second wiring channel formed inside it, and the second bracket extends along the gap between the edge of the drive plate and the heat dissipation structure and the gap between the two drive plates.

[0034] In some embodiments, the first bracket is connected to the second bracket, and the second bracket is further provided with an elastic buckle for engaging with the drive board.

[0035] In some embodiments, the heat dissipation structure is further provided with a second opening, which connects the first cavity and the second cavity and is located on the side of the second cavity near the third cavity;

[0036] The first circuit module is a driver board, the second circuit module is a filter board, and the third circuit module includes a main control power board and a main control board that are electrically connected. The electrical connection lines include power supply lines and signal lines.

[0037] The power supply line enters the first cavity through the second opening and then extends into the third cavity to electrically connect the main control power board and the filter board. The signal line extends from the first cavity into the third cavity to electrically connect the main control board and the driver board.

[0038] In some embodiments, a first seal is also included;

[0039] The heat dissipation structure also has a first wire through hole, a connecting groove and a second wire through hole connected in sequence, the first wire through hole being connected to the first cavity and the second wire through hole being connected to the third cavity;

[0040] A first sealing element is disposed in the connecting groove, and a wire passage is provided on the first sealing element to connect the first wire passage hole and the second wire passage hole, and the electrical connection wire passes through the wire passage.

[0041] In some embodiments, the first seal includes a connecting seat and a sealing portion connected together;

[0042] The connecting groove includes a connecting groove and a mounting groove that are connected to each other. The two ends of the connecting groove are open and respectively connected to the first wire through hole and the second wire through hole. The connecting seat is accommodated in the mounting groove and connected to the heat dissipation structure.

[0043] The blocking part is housed within the connecting groove, and the wire passage is formed on the blocking part.

[0044] In some embodiments, a first sealing strip is also included, which is disposed on the connecting seat and surrounds the sealing portion, and the first sealing strip seals against the groove wall of the mounting groove;

[0045] And / or, it also includes a second sealing strip, which is disposed on the sealing portion and surrounds the sealing portion and seals against the wall of the communicating groove.

[0046] In some embodiments, there are two second sealing strips: one second sealing strip surrounds the first wire hole and seals against the wall of the communicating groove; the other second sealing strip surrounds the second wire hole and seals against the wall of the communicating groove.

[0047] In some embodiments, a power connector for connecting an external power supply line is also included, wherein the first circuit module is a driver board and the second circuit module is a filter board;

[0048] The power connector is mounted on the heat dissipation structure. The power connector is located on the side of the drive board away from the third circuit module, and a portion of the power connector extends into the second cavity and is electrically connected to the filter board.

[0049] In some embodiments, the heat dissipation structure is provided with a mounting port that communicates with the second cavity. The mounting port is located on the side of the first cavity away from the third cavity. The power connector is installed at the mounting port and is partially exposed on the side of the heat dissipation structure facing away from the second cavity.

[0050] In some embodiments, the projections of the first cavity and the second cavity along the thickness direction of the main housing overlap, the first cavity has a first edge disposed away from the third cavity, the second cavity has a second edge disposed away from the third cavity, and the first edge is disposed closer to the third cavity than the second edge;

[0051] The mounting port is located between the second edge and the first edge.

[0052] In some embodiments, the power connector includes an insulating base and a conductive post. The insulating base is connected to the heat dissipation structure and seals the mounting port. The conductive post passes through the insulating base, with one end extending into the second cavity and connected to the filter plate. The other end of the conductive post is exposed on the surface of the insulating base facing away from the second cavity.

[0053] In some embodiments, the insulating base includes an insulating body and a connecting flange protruding from the outer wall of the insulating body, the insulating body portion extending into the second cavity, and the conductive post passing through the insulating body;

[0054] The heat dissipation structure has a limiting groove surrounding the mounting port on one side of the second cavity, and the connecting flange is embedded in the limiting groove and connected to the heat dissipation structure.

[0055] In some embodiments, a terminal block protective housing is also included, which is connected to the heat dissipation structure and located on the side of the first cavity away from the third cavity;

[0056] The terminal block protective shell is provided with a protective cavity and a clearance opening communicating with the protective cavity. The part of the power terminal block exposed outside the main box extends into the protective cavity through the clearance opening.

[0057] In some embodiments, the bottom of the terminal block housing is provided with a power cord outlet.

[0058] In some embodiments, the heat dissipation structure includes a cold plate body, a first enclosure plate, and a second enclosure plate that are integrally formed. The cold plate body is plate-shaped and is provided with heat dissipation channels.

[0059] The first enclosure and the second enclosure are connected to the same side of the cold plate body. The first box cover is sealed to the side of the first enclosure away from the cold plate body to form the first cavity. The third box cover is sealed to the side of the second enclosure away from the cold plate body to form the third cavity.

[0060] In some embodiments, a third enclosure is also included, which is connected to the side of the cold plate body opposite to the first enclosure, and the second lid is sealed to the side of the third enclosure away from the cold plate body to form the second cavity;

[0061] Alternatively, the second lid can be sealed to the side of the cold plate body facing away from the first enclosure to form the second cavity.

[0062] In some embodiments, the system further includes a central module, a central housing, and a central communication line, wherein the central housing is independently configured from the main housing, and the central module is located within the central housing;

[0063] The third circuit module is the main control module, and the central module is electrically connected to the main control module through the central communication line.

[0064] In some embodiments, the first enclosure and the second enclosure are arranged at intervals in the vertical direction, and the first enclosure, the second enclosure, and the cold plate body cooperate to define a cable passage groove, through which the central communication line enters the third cavity to be electrically connected to the main control module.

[0065] In some embodiments, the cable tray extends through opposite sides of the main housing along its extension direction to form a first cable tray opening and a second cable tray opening;

[0066] The main control module includes a central interface and a peripheral interface. The central interface is located closer to the second cable port than the peripheral interface. The peripheral communication line of the external device enters the cable slot through the first cable port and is electrically connected to the peripheral interface. The central communication line enters the cable slot through the second cable port and is electrically connected to the central interface.

[0067] Secondly, embodiments of this application provide a heating, ventilation, and air conditioning (HVAC) device, including any of the electrical control boxes described above, wherein the electrical control box is disposed within a housing.

[0068] In some embodiments, the housing is provided with an access port; the electrical control box is located at the access port, wherein the first cavity is disposed facing the access port.

[0069] In the embodiments of this application, the main housing serves as the main structure of the electrical control box, supporting and protecting the internal circuit modules. By setting two cavities, different functional modules are partitioned and arranged. The first and second cavities can respectively accommodate different circuit modules, making efficient use of the internal space of the electrical control box and resulting in a more compact overall structure. This design can achieve more functions within a limited space, making it suitable for applications with high space requirements. The first and second cavities are spaced apart along the thickness direction of the main housing. The first and second circuit modules are respectively housed within the first and second cavities to realize the different functions of the electrical control box.

[0070] Since the circuit modules in the two cavities are relatively independent in function and connected by a power connection structure, this compartmentalized design makes the internal functions of the control box clearer, which is convenient for management and maintenance. When maintenance or repair of a certain circuit module is required, the problem can be located more quickly, reducing the impact on the other circuit module and improving maintenance efficiency.

[0071] To achieve electrical connection between the two circuit modules, a first opening is provided in the portion of the main housing located between the first and second cavities, connecting the two cavities and providing a channel for the electrical connection structure. The electrical connection structure passes through the first opening, connecting the first and second circuit modules at its two ends respectively, thus achieving electrical connection between the two modules. The electrical connection structure can be a conductive post, wire, or other conductive connector, and its function is to ensure electrical continuity between the two circuit modules.

[0072] Because the first and second circuit modules are located in separate cavities and electrically connected via a wiring structure, this layout effectively reduces signal interference between them. In the control box, signal interference is a major cause of equipment instability and malfunction. The separate-cavity design significantly reduces this interference and improves the reliability of the control box. Attached Figure Description

[0073] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0074] Figure 1 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device according to an embodiment of this application;

[0075] Figure 2 This is a schematic diagram of the exposed access panel of a heating, ventilation, and air conditioning (HVAC) device according to an embodiment of this application.

[0076] Figure 3 for Figure 2 A structural diagram from another angle of the structure;

[0077] Figure 4 This is a schematic diagram of the structure of an electrical control box according to an embodiment of this application (the central control box is omitted);

[0078] Figure 5 This is a schematic diagram of the electrical control box from another angle according to an embodiment of this application (the central housing is omitted);

[0079] Figure 6 for Figure 4 A schematic diagram of the exploded structure of the electrical control box (the central control box is omitted);

[0080] Figure 7 for Figure 6 A structural diagram of the structure from another angle (the central box is omitted);

[0081] Figure 8 This is a schematic diagram of a heat dissipation structure according to an embodiment of this application;

[0082] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;

[0083] Figure 10 for Figure 8 A magnified view of a section at point B in the middle;

[0084] Figure 11 This is a schematic diagram of the power connection structure according to an embodiment of this application;

[0085] Figure 12 for Figure 11 A structural diagram from another angle of the structure;

[0086] Figure 13 This is an exploded view of a portion of the structure of the electrical control box according to an embodiment of this application;

[0087] Figure 14 for Figure 13 A schematic diagram of the structure from another perspective;

[0088] Figure 15 This is an exploded structural diagram of a portion of the electrical control box of this application;

[0089] Figure 16 This is another exploded structural diagram of a portion of the electrical control box in this application;

[0090] Figure 17 for Figure 8 A schematic diagram of the heat dissipation structure from another angle;

[0091] Figure 18 This is an exploded view of a portion of the structure of the electrical control box according to an embodiment of this application;

[0092] Figure 19 This is a cross-sectional schematic diagram of a portion of the structure of the electrical control box in this application;

[0093] Figure 20 This is a schematic diagram of the structure of a first sealing element equipped with an electrical connection wire according to an embodiment of this application;

[0094] Figure 21 This is a side view of a portion of the electrical control box structure of this application;

[0095] Figure 22 for Figure 21 A sectional view along the CC line;

[0096] Figure 23 for Figure 21 A sectional view along the DD section line;

[0097] Figure 24 for Figure 23 A magnified view of a section at point E in the middle;

[0098] Figure 25 This is a schematic diagram of the structure of a cross-bridge according to an embodiment of this application;

[0099] Figure 26 This is a schematic diagram of the assembly structure of the power terminal block, terminal block protective shell, and cable outlet structure according to an embodiment of this application;

[0100] Figure 27 for Figure 26 A schematic diagram of the exploded structure in the image;

[0101] Figure 28 for Figure 27 A schematic diagram of the decomposed structure from another perspective;

[0102] Figure 29 This is a further exploded structural diagram of a portion of the electrical control box in this application;

[0103] Figure 30 This is a schematic diagram of the structure of the third sealing element according to an embodiment of this application;

[0104] Figure 31 This is a schematic diagram of the structure of the electrical control box according to an embodiment of this application after removing the cover.

[0105] Explanation of icon numbers:

[0106] 100. Electrical control box; 10. Main box body; 10a. Variable frequency drive cavity; 10a1. First cavity; 10a11. First edge; 10a2. Second cavity; 10a21. Second edge; 10b. Third cavity; 10c. Wire passage groove; 10c1. First wire passage port; 10c2. Second wire passage port; 10d. First opening; 10d1. Clip groove; 10d2. Guide groove; 11. Heat dissipation structure; 11a. Mounting port; 11b. Limiting groove; 11c. First wire passage hole; 11d. Connecting groove; 11d1. Connecting groove; 11d2. Mounting groove; 11e. Second wire passage hole; 111. Cold plate body; 111a. Blocking groove; 1111. Cold plate substrate; 1112. Flow channel; 1113. Heat dissipation boss 1113a, Heat-conducting surface; 112, First enclosure plate; 112a, Butt joint inner circumferential surface; 1121, Enclosure plate body; 1122, Enclosure plate flange; 113, Second enclosure plate; 113a, First notch; 114, Mounting boss; 115, First support column; 1151, Connecting sub-part; 1152, Positioning sub-part; 1152a, First positioning protrusion; 116, Second support column; 1161, Second positioning protrusion; 117, Third support column; 118, Limiting protrusion; 119, Foolproof protrusion; 120, Flow channel connector; 120A, Mounting plate; 12, Cover; 121, First cover; 1211, Cover body; 1211a, Cover body; 1211b, Flanged part; 1212, Cover plate flange; 1212a 1212b, Extension; 122, Stop; 122, Second Cover; 122a, Sealing Groove; 1221, First Connecting Ear; 123, Third Cover; 20, Variable Frequency Drive Module; 21, First Circuit Module; 211, First Substrate; 211a, First Power Connection Hole; 211b, First Mounting Hole; 211c, First Positioning Hole; 22, Second Circuit Module; 221, Second Substrate; 221a, Second Power Connection Hole; 221b, Second Mounting Hole; 221c, Second Positioning Hole; 222, Common Mode Inductor; 30, Third Circuit Module; 31, Main Control Board; 32, Main Control Power Board; 50, Cable Crossover; 51, First Bracket; 51a, First Wiring Channel; 52, Second Bracket; 52a, Second Wiring Channel; 521. Wiring section; 522. Elastic buckle; 523. Wire clamping section; 60. Central housing; 70. Power terminal block; 70a. Sealing groove; 71. Insulating base; 711. Insulating body; 712. Connecting flange; 712a. Anti-fooling hole; 72. Conductive post; 91. Fan wiring section; 92. Compressor wiring section; 80. Terminal block protective shell; 80a. Protective cavity; 80b. Clearance opening; 80c. Power cord outlet; 81. First protective half-shell; 82. Second protective half-shell; 94. Outlet structure; 94a. Outlet cavity; 941. First outlet socket; 9411. First cavity wall; 9411a. Outlet notch; 942. Second outlet socket; 9421. Second cavity wall; 95. Power connection structure; 951. Insulating base;9511, Base body; 9511a, Guide protrusion; 9512, Limiting part; 9513, Snap-on part; 952, Power connection post; 952a, First connecting hole; 952b, Second connecting hole; 96, First sealing element; 961, Connecting seat; 962, Sealing part; 963, First sealing strip; 964, Second sealing strip; 97, Second sealing element; 971, Sealing body; 972, Sealing lip; 98, Third sealing element; 981, Sealing body; 981a, Slot; 982, Wiring part; 982a, Wiring groove; 982b, Limiting hole; 991, Reactor; 992, First sealing ring; 993, Second sealing ring;

[0107] 2. Outdoor unit; 200. Casing; 200a. Inspection port; 210. Outer casing; 220. Chassis; 220a. Wiring port; 300. Air supply fan.

[0108] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0109] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0110] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0111] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0112] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0113] Heating, ventilation, and air conditioning (HVAC) systems are used to regulate the indoor environment, including functions such as heating, ventilation, and air conditioning. Their main purpose is to provide users with a comfortable and healthy indoor environment by controlling parameters such as temperature, humidity, and airflow. Common HVAC equipment includes air conditioners, radiators, and ventilation systems. These devices are widely used in residential, commercial buildings, and industrial settings.

[0114] Taking HVAC equipment as an example, an air conditioning system can be a multi-split system for buildings, that is, multiple indoor units are connected in parallel with one or more outdoor units to form a refrigerant circuit so that the refrigerant can circulate. Figure 1 , Figure 2 and Figure 3 The diagram shows the outdoor unit 2 of the air conditioning system. The outdoor unit 2 has a casing 200, inside which are housed a compressor, switching valve, outdoor heat exchanger, outdoor expansion valve, and oil separator, etc. These components are connected by refrigerant piping. Additionally, the outdoor unit 2 includes a blower fan 300.

[0115] Furthermore, the outdoor unit 2 also includes an electrical control box 100. The housing 200 is the external structure of the HVAC equipment, protecting internal components, providing a mounting base, and optimizing airflow. The housing 200 can be made of metal or high-strength plastic, possessing good mechanical strength and corrosion resistance. The housing 200 can be rectangular and placed on the roof or ground. The housing 200 isolates internal live components from the outside environment, preventing direct contact by users and reducing the occurrence of safety accidents such as electric shock. The electrical control box 100 is the core control component in the HVAC equipment. Installed inside the housing 200, the electrical control box 100 facilitates maintenance and replacement, and also simplifies the installation and layout of the overall HVAC equipment structure. The electrical control box 100 is responsible for the precise control of the HVAC equipment's operation. It is equipped with various control circuits, using various electronic components and wiring to achieve control functions for the HVAC equipment, including starting, stopping, temperature adjustment, and mode switching.

[0116] The housing 200 provides protection for the electronic components inside the control box 100, preventing dust, moisture, oil, and other external impurities from entering. It also protects the control box 100 from extreme environmental conditions (such as temperature, humidity, and chemical corrosion), ensuring normal operation in various environments and extending the lifespan of the control box 100. The control box 100 contains high-voltage circuits and live components; housing them within the housing 200 prevents accidental contact by users, reducing the risk of electric shock and improving safety. Furthermore, the housing 200 also acts as shielding, reducing the impact of external electromagnetic interference on the electronic components inside the control box 100, ensuring the stability and reliability of the control system.

[0117] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the housing 200 is rectangular, while the electrical control box 100 has a length direction, which is arranged along the height direction (i.e., the vertical direction) of the housing 200. Therefore, the internal structure of the electrical control box 100 has a vertical arrangement. This vertical length arrangement can better meet the overall structural layout requirements of the equipment when the housing 200 has a large height and limited horizontal space, and is also conducive to heat dissipation and maintenance operations.

[0118] It should be noted that the present invention is not limited to the arrangement of the control box 100 along the height direction of the housing 200 in the above embodiments. In other embodiments, the control box 100 may also be arranged along the length direction of the housing 200, or the control box 100 may be arranged along the width direction of the housing 200. Furthermore, the control box 100 may not be a single form extending along the length direction; it may also vary according to the internal space of the housing 200, for example, it may be formed into an approximate "L" shape, "T" shape, etc.

[0119] In some embodiments, an air duct is formed within the housing 200. This air duct guides air to flow along a predetermined path, preventing disordered airflow within the housing 200 and thus improving heat dissipation efficiency. Specifically, as exemplarily shown in the figure, the air supply fan 300 is located at the top of the housing 200, i.e., at the top of the air duct, and blows air upwards. Furthermore, the electrical control box 100 is located within the air duct, thus utilizing the airflow within the air duct to remove the heat generated by the electrical control box 100, ensuring effective heat dissipation of the electrical control box 100.

[0120] Please continue reading. Figure 1 , Figure 2 and Figure 3 In some embodiments, the housing 200 is provided with an access port 200a. In one configuration, the housing 200 includes a housing body and an access door rotatably connected to the housing body, allowing maintenance personnel to expose the access port 200a by opening the access door. In another configuration, the housing 200 includes a housing body and a front panel connected to the housing body. The front panel is fixedly connected to the housing body by screws, allowing maintenance personnel to separate the front panel from the housing body by removing the screws to expose the access port 200a. This application does not impose specific limitations on the manner in which the access port 200a is exposed.

[0121] The electrical control box 100 is located at the access port 200a, allowing maintenance personnel to quickly access the electrical control box 100 without having to extend excessively into the casing 200, which greatly improves the efficiency of maintenance and repair.

[0122] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the electrical control box 100 includes a main box body 10 and a frequency converter drive module 20. The main box body 10 is the main structure of the electrical control box 100. A frequency converter drive cavity 10a is provided inside the main box body 10, and the frequency converter drive module 20 is disposed inside the frequency converter drive cavity 10a. That is, the main box body 10 plays the role of supporting and protecting the internal frequency converter drive module 20, preventing it from shifting or being damaged due to external vibration or collision during use. By setting the main box body 10, the frequency converter drive module 20 and other components are integrated into a unified structure, which is conducive to realizing the overall design and assembly of the electrical control box 100, and facilitates production and maintenance.

[0123] Please continue reading. Figure 4 , Figure 5 , Figure 6 and Figure 7 In some embodiments, the frequency converter drive module 20 includes a first circuit module 21 and a second circuit module 22, and the frequency converter drive cavity 10a includes a first cavity 10a1 and a second cavity 10a2. Understandably, the main housing 10 is a shell structure with a certain thickness. The first cavity 10a1 and the second cavity 10a2 are arranged at intervals relative to each other in the thickness direction of the main housing 10, that is, a portion of the main housing 10 separates the first cavity 10a1 and the second cavity 10a2. By setting the first cavity 10a1 and the second cavity 10a2, a partitioned layout of different functional modules is achieved. For example, different functional circuit modules can be arranged within the first cavity 10a1 and the second cavity 10a2. In this embodiment, the first circuit module 21 is disposed within the first cavity 10a1, and the second circuit module 22 is disposed within the second cavity 10a2. The thickness direction of the first circuit module 21 and the second circuit module 22 is consistent with the thickness direction of the main housing 10. When viewed from the thickness direction of the main housing 10 (i.e., from one side to the other), the first circuit module 21 and the second circuit module 22 are arranged sequentially along the thickness direction of the main housing 10, rather than being placed horizontally or diagonally. This layout allows the first circuit module 21 and the second circuit module 22 to fully utilize the space of the main housing 10 in the thickness direction, making reasonable use of the internal space of the control box 100 and resulting in a more compact overall structure. This design can achieve more functions within a limited space and is suitable for application scenarios with high space requirements.

[0124] Furthermore, the first circuit module 21 and the second circuit module 22 are stacked, reducing the horizontal footprint of the control box 100. This design not only optimizes space utilization efficiency but also significantly improves the convenience of equipment maintenance and repair. Because the footprint of the control box 100 is reduced, the size of the access port 200a can be correspondingly reduced, eliminating the need for a large access port 200a to perform maintenance operations on the control box 100. This simplifies the structural design of the housing 200 and reduces the workload and complexity of disassembling the housing 200. Maintenance personnel can access the control box 100 more quickly without excessive insertion into the housing 200, greatly improving maintenance and repair efficiency.

[0125] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, the main housing 10 includes a heat dissipation structure 11 and a cover 12. The cover 12 is sealingly connected to the heat dissipation structure 11 to form a first cavity 10a1 and a second cavity 10a2. Specifically, the cover 12 includes a first cover 121 and a second cover 122. The heat dissipation structure 11 is the main body of the main housing 10, and a portion of the heat dissipation structure 11 can be made of a material with good thermal conductivity, such as aluminum alloy. The heat dissipation structure 11 can be designed with internal heat dissipation channels. The heat dissipation channels can be straight or curved, used to guide the flow of the heat exchange medium, such as air or liquid, i.e., to remove heat through air cooling or water cooling. The first cover 121 and the second cover 122 are both cover-shaped structures with an opening on one side. The first cover 121 and the second cover 122 can be respectively set on the front and rear sides of the heat dissipation structure 11, that is, along the thickness direction of the main body 10. The first cover 121 covers the heat dissipation structure 11 and cooperates with the heat dissipation structure 11 to form a first cavity 10a1. The first cavity 10a1 is used to install and accommodate the first circuit module 21. The second cover 122 covers the heat dissipation structure 11 and cooperates with the heat dissipation structure 11 to form a second cavity 10a2. The second cavity 10a2 is used to install and accommodate the second circuit module 22. The first cover 121 and the second cover 122, through their tight cooperation with the heat dissipation structure 11, can effectively prevent external pollutants such as dust and moisture from entering the interior of the first cavity 10a1 and the second cavity 10a2.

[0126] The heat dissipation structure 11 can serve as part of the cavity wall that forms the first cavity 10a1 and the second cavity 10a2, thereby more effectively conducting the heat dissipated by the first circuit module 21 and the second circuit module 22 installed in the first cavity 10a1 and the second cavity 10a2, increasing the heat exchange area, improving heat dissipation efficiency, and ensuring that the first circuit module 21 and the second circuit module remain stable under high load operation.

[0127] Furthermore, the heat dissipation structure 11 is used as part of the cavity wall of the first cavity 10a1 and the second cavity 10a2. That is, the heat dissipation structure 11 directly participates in the formation of the outer shell wall of the main box 10. In this way, when the electronic control box 100 is located in the air duct, the airflow in the air duct can quickly flow through the outer wall surface of the electronic control box 100, thereby fully exchanging heat. This allows for a faster release of the heat generated by the electronic control box 100.

[0128] Please continue reading. Figure 4 , Figure 5 and Figure 6 Understandably, the first circuit module 21 and the second circuit module 22 generate heat during operation. At least one side of the first circuit module 21 and the second circuit module 22 faces the heat dissipation structure 11. Since the thickness direction of the first circuit module 21 and the second circuit module 22 is consistent with the thickness direction of the main body 10, the side facing the heat dissipation structure 11 is usually the larger side of the first circuit module 21 and the second circuit module 22. The heat from these sides is mainly transferred to the heat dissipation structure 11 through thermal conduction, and then dissipated to the external environment through the heat dissipation function of the heat dissipation structure 11. Through the thermal conduction and convection heat dissipation function of the heat dissipation structure 11, the heat generated by the first circuit module 21 and the second circuit module 22 can be quickly removed, maintaining the internal temperature of the control box 100 within a reasonable range. The sides of the first circuit module 21 and the second circuit module 22 that are away from the heat dissipation structure 11 face the first cover 121 and the second cover 122, respectively. These sides can dissipate heat to the surrounding environment through radiation. This comprehensive heat dissipation strategy not only improves the efficiency of heat transfer, but also ensures the stability and reliability of the equipment during long-term operation.

[0129] The heat dissipation structure 11 has a first side and a second side, namely the front and rear sides of the heat dissipation structure 11 along the thickness direction of the main box 10. The first cavity 10a1 and the second cavity 10a2 are located on the first side and the second side of the heat dissipation structure 11, respectively. The first cover 121 and the second cover 122 can be tightly fitted with the heat dissipation structure 11 by screws, clips, or other fixing devices to form two relatively independent first cavities 10a1 and second cavities 10a2. The heat generation and heat dissipation requirements of the first circuit module 21 and the second circuit module 22 may be different. By placing them in independent cavities, customized designs can be made according to the specific heat dissipation requirements of the first circuit module 21 and the second circuit module 22. This also effectively avoids heat cross-interference between the first circuit module 21 and the second circuit module 22, ensuring that the first circuit module 21 and the second circuit module 22 each have a better matching heat dissipation setting, thereby improving the heat dissipation efficiency of the entire electrical control box 100.

[0130] like Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the main housing 10 located between the first cavity 10a1 and the second cavity 10a2 has a first opening 10d. This means that the portion of the main housing 10 separating the first cavity 10a1 and the second cavity 10a2 has the first opening 10d, which connects the first cavity 10a1 and the second cavity 10a2. The electrical control box 100 also includes a power connection structure 95, which can be a conductive post 72, a wire, or other conductive connector. The power connection structure 95 passes through the first opening 10d and connects to the first circuit module 21 and the second circuit module 22 at both ends, respectively, to electrically connect the first circuit module 21 and the second circuit module 22. The first opening 10d and the power connection structure 95 simplify the connection between circuits and reduce the complexity and length of internal wiring. Although the first circuit module 21 and the second circuit module 22 are electrically connected through the power connection structure 95, they still maintain a certain degree of physical isolation, which helps maintain their respective operating environments, such as temperature, vibration, and contamination.

[0131] By providing a first opening 10d and a power connection structure 95 inside the main housing 10, the connection between the first circuit module 21 and the second circuit module 22 can be completed inside the main housing 10 without the need for external wiring. This reduces the need for external wiring between the first circuit module 21 and the second circuit module 22, making the overall layout of the control box 100 simpler. Furthermore, due to the reduction in external wiring, the number and size of the wiring holes in the main housing 10 can be reduced accordingly, which helps improve the sealing of the main housing 10, thereby better protecting the internal circuit modules from the intrusion of dust, moisture, and other contaminants.

[0132] Since the first circuit module 21 and the second circuit module 22 in the first cavity 10a1 and the second cavity 10a2 have relatively independent functions and are connected by the power connection structure 95, this cavity design makes the internal functional division of the control box 100 clearer, which is convenient for management and maintenance. When it is necessary to maintain or repair a certain circuit module, the problem can be located more quickly, reducing the impact on the other circuit module and improving maintenance efficiency.

[0133] Furthermore, the first circuit module 21 and the second circuit module 22 are located in independent cavities and are electrically connected via a power connection structure 95. Their main bodies are isolated by the main housing 10. This layout effectively reduces signal interference between the first circuit module 21 and the second circuit module 22. In the electrical control box 100, signal interference is one of the important causes of equipment instability and malfunction. The cavity design significantly reduces this interference and improves the reliability of the electrical control box 100.

[0134] Please continue reading. Figure 6 , Figure 7 , Figure 8 and Figure 9 The heat dissipation structure 11 has a first opening 10d, which can be positioned in the middle of the heat dissipation structure 11. The power connection structure 95 can pass directly through the heat dissipation structure 11 with a shorter path, connecting the first circuit module 21 and the second circuit module 22 within the first cavity 10a1 and the second cavity 10a2. This design not only reduces the length of the power connection structure 95 and lowers material costs, but also reduces signal transmission losses and improves the efficiency and stability of the electrical connection. Because the path of the power connection structure 95 is the shortest, the internal space of the control box 100 can be utilized more efficiently, reserving more space for other electronic components or functional modules.

[0135] like Figure 8 , Figure 9 , Figure 11 and Figure 12 As shown, in some embodiments, the power-connecting structure 95 includes an insulating base 951 and a power-connecting post 952. The insulating base 951 is installed at the first opening 10d. Multiple latching slots 10d1 are spaced apart on the inner wall of the first opening 10d. The insulating base 951 includes a latching part 9513 adapted to the latching slot. By latching the latching part 9513 into the latching slot 10d1, the insulating base 951 is securely installed at the first opening 10d of the heat dissipation structure 11. In other embodiments, the insulating base 951 can also be installed at the first opening 10d by riveting, bonding, or other methods. The insulating base 951 serves as insulation, preventing current leakage or short circuits and ensuring electrical safety. The contact post 952 is mounted on the insulating base 951. The contact post 952 can be fixed to the insulating base 951 by crimping, welding, or pre-embedded in the cavity via injection molding, thus forming a single unit with the insulating base 951 during molding. In other words, the insulating base 951 provides fixation and support for the contact post 952, maintaining its connection stability and preventing loosening due to vibration or other reasons. The contact post 952 extends axially along the thickness direction of the main housing 10, passing through the first opening 10d, and connects to the first circuit module 21 and the second circuit module 22 at both ends. The contact post 952 is typically made of conductive material, such as copper or copper alloy, effectively conducting current to transmit electrical signals and ensure normal circuit operation. The power connection post 952 is arranged in a straight line along the thickness direction of the main housing 10, making full use of the isolation structure space between the cavities and avoiding external wiring from interfering with the space of other components inside the housing 200.

[0136] Multiple electrical terminals 952 are provided, arranged side by side along the left and right direction of the main box 10. All electrical terminals 952 are mounted on the insulating base 951. Multiple electrical terminals 952 can distribute the current and prevent a single electrical terminal 952 from overheating or being damaged due to excessive current, thereby extending the service life of the electrical terminals 952.

[0137] Compared to external wiring solutions, this embodiment achieves integrated arrangement of inter-module connections through an internal power connection structure 95 composed of an insulating base 951 and a power connection post 952. This internal wiring method has at least the following advantages: firstly, it simplifies the wiring process during assembly, as operators only need to complete the end connection of the power connection post 952 to establish a circuit path; secondly, it eliminates the extra space required for external wiring, making the internal structure of the electrical control box 100 more compact.

[0138] Please continue reading. Figure 8 , Figure 9 and Figure 12 Specifically, the insulating base 951 includes a base body 9511 and a limiting part 9512 and a latching part 9513 respectively connected to the base body 9511. The base body 9511 is the main body of the insulating base 951 and is used to support the electrical terminal 952. The electrical terminal 952 passes through the base body 9511 and provides the basic structure for installing the limiting part 9512 and the latching part 9513. The limiting part 9512 protrudes from the outer wall surface of the base body 9511 and is arranged around the circumference of the base body 9511. The latching part 9513 and the limiting part 9512 are spaced apart along the depth direction of the first opening 10d. That is, the limiting part 9512 is located on one side of the base body 9511, while the latching part 9513 is closer to the other side of the base body 9511 than the limiting part 9512. When the insulating base 951 is installed in the first opening 10d, the limiting part 9512 abuts against the end face connecting the first opening 10d. The limiting part 9512 can limit the position of the insulating base 951 in the depth direction of the first opening 10d. This ensures that the insulating base 951 is accurately positioned on the heat dissipation structure 11 and prevents the insulating base 951 from shifting during installation.

[0139] The heat dissipation structure 11 also has a recessed groove 10d1 formed on the inner wall of the first opening 10d. The latching part 9513 is latched into the groove 10d1. The latching part 9513 is usually designed with a certain degree of elasticity, which allows it to be latched into the groove 10d1 of the heat dissipation structure 11 through elastic deformation. Multiple latching parts 9513 are provided, and the multiple latching parts 9513 are spaced apart along the outer periphery of the base part 9511 to provide a more stable fixing force and prevent loosening caused by uneven local force. Moreover, the design of multiple latching parts 9513 improves the reliability of the overall structure. Even if one latching part 9513 fails due to external force or wear, the other latching parts 9513 can still keep the insulating base 951 fixed.

[0140] Furthermore, the limiting part 9512 and the snap-fit ​​part 9513 cooperate to clamp the heat dissipation structure 11. Specifically, the limiting part 9512 restricts the position of the insulating seat 951 on one side of the depth direction of the first opening 10d, while the snap-fit ​​part 9513 snaps into the snap-fit ​​groove 10d1 on the other side of the depth direction of the first opening 10d, so that the limiting part 9512 and the snap-fit ​​part 9513 cooperate to clamp the wall in the depth direction of the first opening 10d. This ensures that the insulating seat 951 is accurately positioned and firmly fixed on the heat dissipation structure 11, and will not loosen even under vibration or impact.

[0141] Please continue reading. Figure 8 , Figure 9 and Figure 12 Furthermore, in some embodiments, a guide protrusion 9511a is provided on one of the outer wall surface of the base portion 9511 and the inner wall surface of the first opening 10d, while a guide groove 10d2 is provided on the other of the outer wall surface of the base portion 9511 and the inner wall surface of the first opening 10d. The guide groove 10d2 extends along the insertion direction of the insulating base 951, and the guide protrusion 9511a is inserted into the guide groove 10d2. The cooperation between the guide protrusion 9511a and the guide groove 10d2 can significantly improve the accuracy and efficiency of installation. The guide protrusion 9511a and the guide groove 10d2 can smoothly guide the insulating base 951 into the first opening 10d of the heat dissipation structure 11 in the correct direction, ensuring the smooth progress of the installation process.

[0142] In this embodiment, a guide protrusion 9511a is disposed on the base portion 9511, and the guide protrusion 9511a extends along the depth direction of the first opening 10d. The depth direction of the first opening 10d is the same as the thickness direction of the main box 10. The guide protrusion 9511a is used to guide the insulating base 951 to be correctly inserted into the first opening 10d of the heat dissipation structure 11 during installation. The wire protrusion can be disposed between two adjacent snap-fit ​​portions 9513. During installation, the guide protrusion 9511a of the insulating base 951 is aligned with the guide groove 10d2 of the heat dissipation structure 11 to ensure that the guide protrusion 9511a can be inserted smoothly. At the same time, the snap-fit ​​portion 9513 is automatically aligned with the snap groove 10d1 on the heat dissipation structure 11. The snap-fit ​​portion 9513 is snapped into the snap groove 10d1 through elastic deformation, thus completing the fixation of the insulating base 951.

[0143] The guide protrusion 9511a is located on one side of the base portion 9511 along the height direction. This asymmetrical design gives the insulating base 951 a clear directionality during installation. Operators can easily determine the correct installation direction of the insulating base 951 by observing the positions of the guide protrusion 9511a and the guide groove 10d2, thus avoiding installation failure due to incorrect orientation.

[0144] like Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, in some embodiments, the first circuit module 21 includes a first substrate 211, which is the main body of the first circuit module 21. The first substrate 211 provides physical mounting locations for various electronic components (such as capacitors, resistors, chips, connectors, etc.) in the first circuit module 21. The second circuit module 22 includes a second substrate 221, which is the main body of the second circuit module 22. The second substrate 221 provides a mounting platform for various electronic components (such as capacitors, resistors, chips, etc.) in the second circuit module 22, ensuring that these components remain stable during operation.

[0145] The first substrate 211 and the second substrate 221 are respectively mounted on the first and second sides of the heat dissipation structure 11. Their thickness direction is consistent with the thickness direction of the main housing 10, that is, they are arranged along the thickness direction of the main housing 10. This layout allows the larger surfaces of the first substrate 211 and the second substrate 221 to be close to the heat dissipation structure 11, ensuring that heat can be efficiently conducted from the first substrate 211 and the second substrate 221 to the heat dissipation structure 11. It also makes the internal structure of the electrical control box 100 more compact and saves space.

[0146] Please continue reading. Figure 11 , Figure 12 , Figure 13 and Figure 14 The first substrate 211 has a first power contact hole 211a, and the second substrate 221 has a second power contact hole 221a. The two ends of the power contact post 952 have a first connection hole 952a and a second connection hole 952b, respectively. The first connection hole 952a and the first power contact hole 211a are electrically connected by a connector. The connector can be a bolt, nut, washer, or other conductive connector. In this embodiment, the connector is a bolt and a spring washer. During installation, the end of the power contact post 952 with the first connection hole 952a abuts against the position of the first substrate 211 with the first power contact hole 211a. Then, the connector is inserted into the first power contact hole 211a of the first substrate 211 and the first connection hole 952a of the power contact post 952, and the electrical connection is achieved by tightening the bolt. The spring washer is disposed between the first substrate 211 and the bolt to prevent the bolt from loosening and to provide a reliable electrical connection. The second connection hole 952b and the second electrical connection hole 221a are electrically connected via a connector. The specific installation method can be the same as or similar to the method described above, and will not be repeated here. By providing electrical connection holes on the first substrate 211 and the second substrate 221, and achieving electrical connection through the electrical connection post 952 and the connector, the connection between circuit modules is ensured to be more stable. The use of the connector further enhances the reliability of the connection and reduces failures caused by poor contact.

[0147] like Figure 13 and Figure 14 As shown, to ensure the accurate and secure connection of the first substrate 211 and the second substrate 221 to the heat dissipation structure 11, in some embodiments, the heat dissipation structure 11 is further provided with a first support post 115 and a second support post 116. The first support post 115 is located in the first cavity 10a1, and the second support post 116 is located in the second cavity 10a2. Specifically, the heat dissipation structure 11 includes a cold plate body 111, a first support post 115, and a second support post 116. The first support post 115 is connected to one side of the cold plate body 111 and extends toward the first substrate 211, and the second support post 116 is connected to the other side of the cold plate body 111 and extends toward the second substrate 221. The first substrate 211 is also provided with a first mounting hole 211b, and the second substrate 221 is provided with a second mounting hole 221b. Understandably, the first mounting hole 211b... The position of 1b corresponds to the position of the first support post 115, and the position of the second mounting hole 221b corresponds to the position of the second support post 116. The first support post 115 is connected to the first mounting hole 211b to support the first substrate 211, and the second support post 116 is connected to the second mounting hole 221b to support the second substrate 221. Screws or other fasteners can be locked in the first mounting hole 211b and the second mounting hole 221b to form a tight connection with the first support post 115 and the second support post 116. The first support post 115 and the second support post 116 provide additional support for the first substrate 211 and the second substrate 221. The first substrate 211 and the second substrate 221 are effectively supported on the heat dissipation structure 11, which helps to maintain the flatness and stability of the first substrate 211 and the second substrate 221, especially when carrying other electronic components or in a high vibration environment.

[0148] The first support pillar 115 and the second support pillar 116 respectively lift the first substrate 211 and the second substrate 221, ensuring that both substrates 211 and 221 maintain an appropriate distance from the heat dissipation structure 11. This increases the airflow space between the first substrate 211 and 221 and the heat dissipation structure 11, thus improving heat dissipation efficiency. Furthermore, the first support pillar 115 and the second support pillar 116 can also serve as part of the heat conduction path. For example, if the first support pillar 115 and the second support pillar 116 are made of copper or aluminum alloy, they possess high thermal conductivity and good mechanical properties, helping to more effectively conduct the heat generated by the first substrate 211 and the second substrate 221 to the heat dissipation structure 11, thereby improving heat dissipation efficiency.

[0149] Understandably, multiple first support pillars 115 and multiple second support pillars 116 can be provided. Multiple first support pillars 115 can be spaced apart on the circumferential direction near the outer edge of the first substrate 211. If the second substrate 221 has a square plate structure, multiple second support pillars 116 can be provided on the four corners of the second substrate 221. Multiple first support pillars 115 and multiple second support pillars 116 can provide a uniformly distributed support force, thereby improving the stability of supporting the first substrate 211 and the second substrate 221.

[0150] like Figure 10 , Figure 13 and Figure 14 As shown, in some embodiments, the first support column 115 is further provided with a first positioning protrusion 1152a, and the first substrate 211 is also provided with a first positioning hole 211c corresponding to the first positioning protrusion 1152a. During installation, the first positioning protrusion 1152a is inserted into the first positioning hole 211c, ensuring the precise positioning of the first substrate 211 on the first support column 115, preventing the first substrate 211 from shifting on the first support column 115, and maintaining the relative position stability between the substrate and the heat dissipation structure 11. Furthermore, the position of the first substrate 211 is pre-positioned, reducing the difficulty of subsequently installing screws or other fasteners in the first mounting hole 211b.

[0151] Please see Figure 10 , Figure 13 and Figure 14 Specifically, the first support column 115 includes a connecting sub-part 1151 and a positioning sub-part 1152 connected together. Both the connecting sub-part 1151 and the positioning sub-part 1152 are connected to the cold plate body 111 and extend toward the first substrate 211. Their axes are relatively parallel. The end of the positioning sub-part 1152 away from the cold plate body 111 has the aforementioned first positioning protrusion 1152a. The first positioning protrusion 1152a can pass through the first positioning hole 211c. The end of the connecting sub-part 1151 away from the cold plate body 111 abuts against the first substrate 211 and is connected to the first mounting hole 211b by screws or other fasteners. In this embodiment, a screw is used to fasten the connecting sub-part 1151 to the first substrate 211. The end of the connecting sub-part 1151 facing the first substrate 211 has a threaded hole. During assembly, the first substrate 211 is first placed on one side of the cold plate body 111, so that the first positioning protrusion 1152a of the positioning sub-part 1152 is aligned with the first positioning hole 211c of the first substrate 211. The first substrate 211 is gently pressed down so that the first positioning protrusion 1152a passes through the first positioning hole 211c, thus achieving the initial positioning of the first substrate 211. Subsequently, the screw is passed through the threaded hole of the connecting sub-part 1151 and engages with the first mounting hole 211b. The screw is then tightened to fix the first substrate 211.

[0152] In some embodiments, the second support post 116 is further provided with a second positioning protrusion 1161, and the second substrate 221 is also provided with a second positioning hole 221c corresponding to the second positioning protrusion 1161, into which the second positioning protrusion 1161 is inserted. This design has a similar effect to the first positioning protrusion 1152a, enabling pre-positioning of the second substrate 221, reducing the installation difficulty of locking the second support post 116 and the second substrate 221, and requiring no assistance from others. The specific structure of the second support post 116 can be the same as or similar to that of the first support post 115; therefore, it will not be described in detail here.

[0153] like Figure 6 and Figure 8 As shown, in some embodiments, the control box 100 further includes a third circuit module 30 and a third cover 123. The third cover 123 cooperates with the heat dissipation structure 11 to form a third cavity 10b, meeting the sealing requirements of the control box 100. The sealing design can prevent external factors such as dust and moisture from affecting the internal components of the third cavity 10b, improving the reliability and service life of the control box 100. The third circuit module 30 is located inside the third cavity 10b. The third circuit module 30 can be an independent control unit or functional module, working in conjunction with the first circuit module 21 and the second circuit module 22. By setting the third cavity 10b and the third circuit module 30, the control box 100 achieves a modular arrangement of circuit modules. Each cavity can be designed and installed independently, facilitating the integration and expansion of different functional modules, and reducing the complexity of installation and maintenance.

[0154] The electrical control box 100 also includes an electrical connection wire, which can be made of multi-strand copper wire or coaxial cable, and has good conductivity and anti-interference performance. In this embodiment, the third box cover 123 and the first box cover 121 are located on the same side of the heat dissipation structure 11, and the third cavity 10b is located above the first cavity 10a1. The electrical connection wire extends from the first cavity 10a1 to the third cavity 10b to electrically connect the third circuit module 30 and the first circuit module 21, so as to realize the transmission of data and control signals.

[0155] like Figure 2 , Figure 3 , Figure 6 and Figure 8As shown, the first cavity 10a1 is positioned facing the access port 200a of the housing 200, meaning that both the first cover 121 and the third cover 123 face the access port 200a. In this application, the side facing the maintenance personnel of the first cover 121 and the third cover 123 is defined as the front side of the electrical control box 100, while the side facing away from the first cover 121, the second cover 122, is defined as the rear side of the electrical control box 100. The electrical control box 100 can be vertically hung inside the housing 200 via a mounting plate on its back; alternatively, the housing 200 has connecting ribs extending vertically, and the electrical control box 100 has a length direction arranged along the extension direction of the connecting ribs, and is connected to the connecting ribs by screws. Furthermore, since the third cover 123 is located above the first cover 121, the side containing the third cover 123 is defined as the upper side of the electrical control box 100, while the side containing the first cover 121 is defined as the lower side of the electrical control box 100. Moreover, taking the perspective of a maintenance personnel facing the electrical control box 100 as a reference, the left and right sides of the electrical control box 100 correspond to the left and right sides from which the maintenance personnel view the electrical control box 100, respectively.

[0156] The access port 200a of the first cavity 10a1 facing the housing 200 allows maintenance personnel to quickly access the first circuit module 21 and the third circuit module 30 in the first cavity 10a1 and the third cavity 10b, thereby improving maintenance and repair efficiency and reducing workload. To facilitate maintenance personnel in opening the first cover 121 and the third cover 123, both the first cover 121 and the third cover 123 are configured such that their upper ends are rotatably connected to the heat dissipation structure 11, and their lower ends are secured to the heat dissipation structure 11 by screws. This allows for maintenance or inspection without completely disassembling the first cover 121 and the third cover 123; simply loosening the screws allows the first cover 121 and the third cover 123 to be flipped to a suitable angle. A suspension member can also be provided on the inner side of the third cover 123. The heat dissipation structure 11 has a suspension hole that allows the suspension member to abut. One end of the suspension member is connected to the third cover 123, and the other end is movable and can be partially inserted into the suspension hole, so that the third cover 123 remains in a flipped state, facilitating operation by maintenance personnel.

[0157] like Figure 8 , Figure 9 , Figure 15 and Figure 16As shown, to optimize the arrangement of electrical connection wires, in some embodiments, the heat dissipation structure 11 also has a first wire passage hole 11c, a connecting groove 11d, and a second wire passage hole 11e connected in sequence. The first wire passage hole 11c is connected to the first cavity 10a1, and the second wire passage hole 11e is connected to the third cavity 10b. The first wire passage hole 11c, the connecting groove 11d, and the second wire passage hole 11e are located on the side of the heat dissipation structure 11 away from the first cover 121 and the third cover 123, effectively reducing the possibility of external moisture and dust entering. The first wire-passing hole 11c, the connecting groove 11d, and the second wire-passing hole 11e pass through the third cavity 10b and the first cavity 10a1 in the vertical direction of the heat dissipation structure 11, allowing the electrical connection wire to extend from the first cavity 10a1 through the connecting groove 11d inside the heat dissipation structure 11 to the third cavity 10b. The first wire-passing hole 11c, the connecting groove 11d, and the second wire-passing hole 11e, which are connected in sequence, provide a preset path for the arrangement of the electrical connection wire, ensuring the stable arrangement of the electrical connection wire inside the heat dissipation structure 11.

[0158] like Figure 15 and Figure 16 As shown, the electrical control box 100 also includes a first sealing element 96, disposed within the connecting groove 11d. The first sealing element 96 effectively prevents moisture, dust, and other foreign matter from entering the connecting groove 11d and the internal space where the electrical connection wires are located, making the electrical connection wires less susceptible to damage from external environmental factors. It also protects the electronic components in the first cavity 10a1 and the third cavity 10b from external environmental influences. The first sealing element 96 is provided with a wire passage connecting the first wire passage hole 11c and the second wire passage hole 11e. The electrical connection wires pass through the wire passage, allowing them to be neatly arranged and protected, avoiding damage from the external environment and improving the stability and reliability of the electrical connection wires. This ensures the electrical connection of the electrical connection wires and, through the protective function of the first sealing element 96, optimizes the arrangement environment of the electrical connection wires.

[0159] The first sealing element 96 can be a rubber sealing element or a silicone sealing element, which has excellent elasticity, thereby effectively filling and sealing the position of the connecting groove 11d. The rubber first sealing element 96 can effectively prevent external factors such as dust and moisture from entering the heat dissipation structure 11, protecting the electrical connection wires and internal circuit modules.

[0160] like Figure 14 , Figure 17 and Figure 18As shown, the heat dissipation structure 11 also includes a mounting plate 120A. The mounting plate 120A is connected to the cold plate body 111 and forms part of the groove wall of the connecting groove 11d. The mounting plate 120A is located on the side of the cold plate body 111 facing the second chamber. When installing the first seal 96, the mounting plate 120A can be removed to expose the connecting groove 11d, which facilitates the installation and maintenance of the first seal 96 by the operator. The connecting piece can be sequentially inserted through the mounting plate 120A, the first seal 96, and the groove wall of the connecting groove 11d to ensure the stability and sealing of the heat dissipation structure 11.

[0161] like Figure 16 , Figure 18 and Figure 20 As shown, specifically, the first sealing element 96 includes a connecting seat 961 and a sealing part 962 connected together. The sealing part 962 is connected to one side of the connecting seat 961. Along the thickness direction of the main box body 10, the sealing part 962 is positioned closer to the first box cover 121 than the connecting seat 961. Furthermore, along the thickness direction perpendicular to the main box body 10, the cross-sectional area of ​​the sealing part 962 is smaller than the cross-sectional area of ​​the connecting seat 961. Additionally, the sealing part 962 is approximately located in the middle of the connecting seat 961. The heat dissipation structure 11 has a first fixing hole communicating with the connecting groove 11d. The connecting seat 961 has a second fixing hole opposite to the first fixing hole. The connecting seat 961 forms a stable connection with the heat dissipation structure 11 through fasteners passing through the first and second fixing holes. The connecting seat 961 can be configured as a cuboid. Second fixing holes are provided at all four corners of the connecting seat 961 to ensure the stable installation of the first sealing element 96 on the heat dissipation structure 11 and reduce loosening caused by vibration.

[0162] like Figure 20 , Figure 21 and Figure 22As shown, the connector 961 provides a stable support for the sealing part 962, ensuring that the sealing part 962 maintains the correct position in the electrical control box 100 and will not shift due to external forces, thereby maintaining a good sealing effect. The connecting groove 11d includes a connecting groove 11d1 and a mounting groove 11d2 that are connected to each other. The two ends of the connecting groove 11d1 are open and connected to the first wire through hole 11c and the second wire through hole 11e, respectively. The connector 961 is accommodated in the mounting groove 11d2 and connected to the heat dissipation structure 11. The size of the mounting groove 11d2 is adapted to the size of the connector 961. The connector 961 fits tightly against the bottom wall of the mounting groove 11d2, so that the connector 961 can be easily aligned during installation, improving the speed and accuracy of installation, and also enhancing the stability of the connection between the connector 961 and the heat dissipation structure 11. Understandably, the first fixing hole communicates with the mounting groove 11d2, and the sealing part 962 is accommodated within the communicating groove 11d1, forming a seal with the groove wall of the communicating groove 11d1, effectively preventing moisture and dust and other foreign objects from entering the electrical control box 100 through the communicating groove 11d1. A wire passage is formed on the sealing part 962, providing protection for the electrical connection wires and preventing them from being rubbed or squeezed when passing through the heat dissipation structure 11, thus extending the service life of the electrical connection wires.

[0163] Please continue reading. Figure 20 , Figure 21 and Figure 22 To further improve the sealing performance of the first seal 96, in some embodiments, the first seal 96 further includes a first sealing strip 963. The first sealing strip 963 is disposed on the connecting seat 961, located inside the second fixing hole, and surrounds the sealing portion 962. Understandably, the first sealing strip 963 is arranged around the outer periphery of the sealing portion 962, forming a closed annular structure, specifically with a certain distance between it and the sealing portion 962. The first sealing strip 963 seals against the groove wall of the mounting groove 11d2, providing an additional sealing layer to ensure the sealing performance between the connecting seat 961 and the heat dissipation structure 11, preventing fluid or foreign matter from entering the electrical control box 100 through the connecting groove 11d.

[0164] Multiple first sealing strips 963 can be provided, and multiple first sealing strips 963 are arranged around the sealing part 962 in multiple turns to provide multi-layer sealing. Even if one of the first sealing strips 963 is slightly damaged, the other first sealing strips 963 can still maintain the sealing effect.

[0165] Please continue reading. Figure 20 , Figure 21 and Figure 22In some embodiments, the first sealing member 96 further includes a second sealing strip 964, which is disposed on the sealing part 962 and surrounds the sealing part 962. The second sealing strip 964 surrounds the sealing part 962, meaning that the second sealing strip 964 is disposed on the outer surface of the sealing part 962, specifically on the side of the sealing part 962 away from the protrusion of the connecting seat 961, and seals against the groove wall of the connecting groove 11d1. Through good sealing performance, the second sealing strip 964 can prevent external dust and moisture from entering the first cavity 10a1 and the third cavity 10b through the gap between the connecting groove 11d1 and the sealing part 962.

[0166] Furthermore, there are two second sealing strips 964. One second sealing strip 964 surrounds the first wire passage hole 11c and seals against the wall of the connecting groove 11d1. The other second sealing strip 964 surrounds the second wire passage hole 11e and seals against the wall of the connecting groove 11d1. The two second sealing strips 964 are arranged at intervals in the vertical direction. By setting two second sealing strips 964, seals are formed around the first wire passage hole 11c and the second wire passage hole 11e respectively, effectively preventing moisture, dust and other foreign objects from entering the electrical control box 100 through the first wire passage hole 11c and the second wire passage hole 11e, thereby enhancing the overall sealing performance. The two second sealing strips 964 can extend along the left and right direction of the sealing part 962 and abut against the first sealing strip 963, forming a more robust sealing frame. The arrangement of the two second sealing strips 964 can effectively compensate for the misalignment of the sealing surface caused by temperature changes or mechanical vibration, maintaining the stability of the sealing performance.

[0167] By combining the first sealing strip 963 and the second sealing strip 964, a double seal is provided, significantly enhancing the sealing performance of the first sealing element 96 located between the first cavity 10a1 and the second cavity 10a2, effectively preventing moisture and dust from entering. This improves the protection level of the electrical control box 100, enabling it to withstand harsher external environments.

[0168] like Figure 6 , Figure 7 , Figure 13 and Figure 14As shown, in some embodiments, the first circuit module 21 is a driver board, which is typically used to implement the main functions of the control box 100, such as control and drive. In this embodiment, the driver board is located inside the first cavity 10a1. The second circuit module 22 is a filter board, which is used to filter high-frequency noise in the power supply, smooth DC voltage, and suppress electromagnetic interference, that is, to filter the electrical signal, remove noise and interference, and ensure the purity of the electrical signal. In this embodiment, the filter board is located inside the second cavity 10a2. Continuing from the above, the driver board is located on the side facing the access port 200a, and the filter board is located on the side away from the access port 200a. The driver board typically integrates multiple functional circuits. For example, the insulated gate bipolar transistor (IGBT) commonly found in driver boards is a device with a high failure rate. Due to the complexity and high failure rate of the driver board, it requires more frequent maintenance. Therefore, placing it on the side facing the access port 200a makes it easier for maintenance personnel to maintain. Compared to the driver board, the filter board has a relatively lower failure rate. Common problems are mostly related to electrical parameter adjustments or mechanical connection issues, which are relatively easy to resolve, resulting in a lower maintenance frequency. Furthermore, the driver board generates more heat than the filter board. Therefore, when the filter board is located on the back side, it can more effectively utilize the airflow in the duct to remove the corresponding heat, resulting in better heat dissipation efficiency.

[0169] From a heat dissipation perspective, the drive board is housed in the first cavity 10a1, while the filter board is housed in the second cavity 10a2. This compartmentalized design prevents heat accumulation within a single cavity. A portion of the heat dissipation structure 11 forms a shared cavity wall between the first and second cavities 10a1 and 10a2. This cavity wall not only serves as a physical separator but also acts as a heat conduction channel. Specifically, the material and structural design of the cavity wall allow heat to be efficiently conducted from higher-temperature components (such as the drive board) to the heat dissipation structure 11, thus achieving rapid heat dissipation. This design not only effectively avoids localized overheating caused by heat accumulation but also optimizes the overall heat dissipation performance of the control box 100 by rationally distributing heat, ensuring the stability and reliability of the drive board and filter board during long-term operation.

[0170] like Figure 6 , Figure 7 , Figure 13 and Figure 14 As shown, in one configuration, two drive boards are laid flat in the first cavity 10a1. The two drive boards can be arranged at intervals along the vertical direction of the main box 10, so that the drive boards can make full use of the space of the first cavity 10a1, improve the space utilization rate, effectively reduce electromagnetic interference between drive boards, and facilitate heat dissipation.

[0171] Accordingly, two power connection structures 95 are provided. The two power connection structures 95 are respectively located on the side of the two drive plates that are close to each other. The two power connection structures 95 are respectively located on the side of the two drive plates that are relatively close to each other in the vertical direction (i.e., the lower side of the upper drive plate and the upper side of the lower drive plate). This layout makes the positions of the two power connection structures 95 relatively concentrated, which facilitates unified operation during the assembly process. When installing the power connection structures 95, the operator can more easily operate the two power connection structures 95 simultaneously, reducing assembly time and labor intensity.

[0172] The two driver boards are each electrically connected to the filter board through a corresponding power connection structure 95. This design ensures that each driver board can independently transmit signals to the filter board, improving the stability and reliability of signal transmission.

[0173] In some embodiments, the two drive boards are centrally symmetrically arranged. In this embodiment, the two drive boards are located on the upper and lower sides of the first cavity 10a1, respectively, and are symmetrical about a central point. Since each side of the components on the drive boards is symmetrical, the current distribution can be balanced, thereby reducing the asymmetry of the electromagnetic field and improving the performance and stability of the circuit. The centrally symmetrical arrangement simplifies the layout and wiring of the circuit board, making the wiring neater and more orderly. This layout helps to reduce the complexity of wiring, improve wiring efficiency, and help reduce electromagnetic interference.

[0174] Alternatively, the two grounding structures 95 can be arranged symmetrically. This symmetrical arrangement makes wiring more intuitive and simpler, reducing complexity and error rates, simplifying assembly, and decreasing assembly time and labor intensity. During high-frequency signal transmission, the distribution and propagation characteristics of the electromagnetic field are affected by structural symmetry. When the grounding structures 95 are symmetrical, interference signals will generate components with opposite phases along the symmetrical path. These components cancel each other out during propagation, thus reducing interference intensity. Therefore, two symmetrical grounding structures 95 can reduce high-frequency interference.

[0175] Alternatively, the two driver boards and the two power connection structures 95 can be arranged symmetrically at the center. This design combines the advantages of the two aforementioned arrangements, further optimizing the overall performance of the control box 100. Specifically, this layout not only simplifies the layout and wiring of the driver boards and improves circuit performance and stability, but also reduces electromagnetic interference, optimizes the signal transmission path, reduces high-frequency interference, and improves the system's anti-interference capability. At the same time, this design also facilitates assembly and maintenance, improving system reliability. Further details are omitted here.

[0176] like Figure 6 and Figure 7As shown, in some embodiments, the third circuit module 30 is the main control module, that is, the third cavity 10b is the main control cavity, and the main control module is disposed in the main control cavity. The third circuit module 30 specifically includes a main control power board 32 and a main control board 31 that are electrically connected. The main control power board 32 is responsible for providing a stable power supply to the main control module. It can monitor and adjust parameters such as current, voltage, and power to ensure stable power output. The main control board 31 is the control center of the electrical control box 100, responsible for directing and controlling the operation of various components, and can process and transmit control signals to achieve precise control of other components.

[0177] Both the main control board 31 and the main power supply board 32 are housed within the third cavity 10b and are arranged at intervals along the thickness direction of the main housing 10. This helps reduce the impact of electromagnetic interference generated by the main power supply board 32 on sensitive signals on the main control board 31, improving the stability and accuracy of signal processing. Furthermore, the main control board 31 is located on the side of the main power supply board 32 facing the third housing cover 123. Because the main control board 31 is closer to the third housing cover 123, it is easier for maintenance personnel to directly open the third housing cover 123 for repair or replacement without needing to reach inside the main housing 10, thus saving maintenance time.

[0178] The power supply line in the aforementioned electrical connection is connected to the main control power board 32 to provide a stable power supply to the main control module. The signal line is connected to the main control board 31 for transmitting control signals and data. The separate layout of the main control board 31 and the main control power board 32 allows the power supply line and signal line to be connected more directly to their respective target boards, reducing interference between the power supply line and the signal line, simplifying internal wiring, and reducing cable length and complexity.

[0179] like Figure 6 , Figure 7 and Figure 8 As shown, the heat dissipation structure 11 is further provided with a third support column 117. The third support column 117 can be a structural component with a certain strength, usually made of metal or high-strength plastic material. The third support column 117 is located in the third cavity 10b. The main control board 31 includes a third substrate. The third substrate is provided with a third mounting hole. The third support column 117 is connected to the third mounting hole to support the third substrate. The third support column 117 is also provided with a third positioning protrusion. The third substrate is also provided with a third positioning hole corresponding to the third positioning protrusion. The third positioning protrusion passes through the third positioning hole to realize the pre-positioning of the third substrate. Then, the connection between the third mounting hole and the third substrate ensures the stable installation of the main control board 31 on the heat dissipation structure 11 and reduces loosening caused by vibration or other external forces.

[0180] like Figure 6 and Figure 15 and Figure 25As shown, in some embodiments, the electrical control box 100 further includes a wire bridge 50, which supports and guides the arrangement of the aforementioned electrical connection wires. The wire bridge 50 not only provides support for the electrical connection wires but also protects them and reduces wiring clutter. The wire bridge 50 is disposed within the first cavity 10a1 and has a first wiring channel 51a and a second wiring channel 52a that are relatively independently configured. These independently configured channels effectively separate different types of electrical connection wires. This makes the arrangement of electrical connection wires within the electrical control box 100 more neat and orderly, reducing wiring clutter and improving the internal cleanliness of the electrical control box 100. Furthermore, the design of the first wiring channel 51a and the second wiring channel 52a reduces the number of wiring holes required on the electrical control box 100, thereby reducing the manufacturing cost of the electrical control box 100.

[0181] The electrical connection wires include power supply wires and signal wires. Power supply wires typically carry a larger current and are classified as high-voltage, while signal wires typically carry a smaller current and are classified as low-voltage. The portion of the power supply wire located within the first cavity 10a1 is arranged in the first wiring channel 51a, and the portion of the signal wire located within the first cavity 10a1 is arranged in the second wiring channel 52a. This separation of high-voltage and low-voltage wiring effectively reduces electromagnetic interference from high-voltage signals to low-voltage signals, improving the stability and reliability of signal transmission. This separation helps reduce electromagnetic interference and improves the electromagnetic compatibility of the control box 100, enabling it to operate stably in various electromagnetic environments. Furthermore, the separate first wiring channel 51a and second wiring channel 52a facilitates cable maintenance or replacement, allowing for individual handling of either the power supply or signal wire without affecting the other. The independent first and second wiring channels 51a and 52a make maintenance and repair of the power supply and signal wires more convenient, reducing maintenance difficulties caused by wire crossings.

[0182] Please continue reading. Figure 6 and Figure 15 and Figure 25In some embodiments, the cable bridge 50 includes a first bracket 51 and a second bracket 52. The first bracket 51 has a first cable routing channel 51a for arranging power supply cables. The first bracket 51 can reduce the power supply cables from deviating from the preset wiring path due to vibration or other external forces. The first bracket 51 is located in the middle of the first cavity 10a1, spans the side of the drive board near the third circuit module 30 facing away from the second cavity 10a2, and extends from the position of the corresponding power connection structure 95 on the drive board toward the third circuit module 30, that is, extends toward the direction of the first cable routing hole 11c. This ensures that the path of the power supply cables is clear and fixed, making the arrangement of the power supply cables in the control box 100 more neat and orderly, reducing interference between the power supply cables and other components, reducing the problem of messy wiring, and improving the cleanliness inside the control box 100.

[0183] The second bracket 52 has the aforementioned second wiring channel 52a formed inside, which is used to arrange signal lines. The second bracket 52 can reduce the signal lines from deviating from the preset wiring path due to vibration or other external forces. The second bracket 52 extends along the gap between the edge of the drive board and the heat dissipation structure 11 and the gap between the two drive boards. One end of the second bracket 52 extends towards the first wire hole 11c, making full use of the space inside the control box 100, ensuring that the path of the signal lines is clear and fixed, reducing interference between the signal lines and other components, reducing the problem of messy wiring, and improving the cleanliness inside the control box 100.

[0184] The first bracket 51 and the second bracket 52 can be made of insulating materials, such as ABS plastic or rubber, to ensure electrical safety. The power supply lines and signal lines are arranged relatively independently in the first bracket 51 and the second bracket 52. This separation design effectively reduces electromagnetic interference from high-voltage to low-voltage signals. The paths of the power supply lines (high-voltage) and signal lines (low-voltage) within the control box 100 are clearly distinguished, avoiding signal interference caused by line crossings and improving the stability and reliability of signal transmission. The independent design of the first bracket 51 and the second bracket 52 makes the maintenance and repair of the power supply lines and signal lines more convenient. Maintenance personnel can quickly identify and operate specific lines, reducing the difficulties in maintenance caused by line crossings.

[0185] In some embodiments, the first bracket 51 is connected to the second bracket 52. Specifically, the end of the first bracket 51 facing away from the first wire passage hole 11c is connected to the end of the second bracket 52 facing away from the first wire passage hole 11c, making the structure of the entire wire bridge 50 more stable and reducing loosening caused by vibration or other external forces. The first bracket 51 and the second bracket 52 can be integrally formed, reducing assembly difficulty. Integral forming reduces the number of connection points between the first bracket 51 and the second bracket 52, thereby reducing potential points of failure and the risk of loosening due to vibration or other external forces.

[0186] Please continue reading. Figure 6 and Figure 15 and Figure 25 The second bracket 52 is also provided with elastic buckles 522 for engaging with the drive board. Specifically, the second bracket 52 includes a wiring section 521 and multiple elastic buckles 522 connected to the wiring section 521. The wiring section 521 extends along the gap between the edge of the drive board and the heat dissipation structure 11 and the gap between the two drive boards, and has a second wiring channel 52a. The multiple elastic buckles 522 are arranged at intervals along the extension direction of the wiring section 521. The elastic buckles 522 are connected to the side of the wiring section 521 opposite to the first cover 121 and extend towards the drive board. Through the engagement of the elastic buckles 522 with the drive board, the second bracket 52 can be provided with stable support, and the installation and removal of the second bracket 52 can be completed quickly. The portion of the wiring section 521 located between the two drive boards is provided with elastic buckles 522 on both sides facing the two drive boards. The elastic buckles 522 can provide a stable connection force to ensure that the drive board will not loosen due to vibration or other external forces during operation.

[0187] like Figure 25 As shown, the second bracket 52 also includes a wire clamping part 523, which is connected to the wiring part 521 and is spaced apart from the bottom wall of the second wiring channel 52a. Understandably, the signal line is disposed between the wire clamping part 523 and the bottom wall of the second wiring channel 52a. The main function of the wire clamping part 523 is to fix the signal line, ensure that the signal line is stably arranged in the second wiring channel 52a, and prevent the signal line from loosening due to vibration or other external forces during operation.

[0188] In some embodiments, the first bracket 51 may not be provided. Specifically, the heat dissipation structure 11 is also provided with a second opening (not shown in the figure). The second opening connects the first cavity 10a1 and the second cavity 10a2 and is located on the side of the second cavity 10a2 near the third cavity 10b. That is, the second opening is located above the power connection structure 95 and is covered by the second cover 122, making full use of the space inside the electrical control box 100.

[0189] The power supply line in the electrical connection cable extends upward from the power connection structure 95 in the second cavity 10a2 to the second opening. After entering the first cavity 10a1 through the second opening, it passes sequentially through the first wire hole 11c, the connecting groove 11d, and the second wire hole 11e, and then extends into the third cavity 10b to electrically connect to the main control power board 32 and the filter board. The signal line still extends from the first cavity 10a1 to the third cavity 10b to electrically connect to the main control board 31 and the drive board. The design of the second opening allows the power supply line to enter the first cavity 10a1 directly from the second cavity 10a2 without the need for an additional first bracket 51, thus making more efficient use of the internal space of the electrical control box 100.

[0190] In this embodiment, since the first bracket 51 is not provided, the number of parts can be reduced, the manufacturing cost can be lowered, and the overall structure of the electrical control box 100 can be made simpler, making it easier to produce and maintain.

[0191] like Figure 6 and Figure 15 As shown, in some embodiments, the control box 100 also includes a power terminal 70 for connecting an external power supply line. The power terminal 70 provides a connection point between the external power supply line and the internal circuitry of the control box 100, enabling the control box 100 to receive external power.

[0192] The power connector 70 is located on the side of the first circuit module 21 away from the third circuit module 30. In this embodiment, the control box 100 has a length direction, which is arranged vertically. The third circuit module 30, the drive board, and the power connector 70 are arranged sequentially along the length direction. Specifically, the power connector 70 is located below the drive board, which can effectively avoid interference between the power cord and other circuit modules. The power connector 70 is installed on the heat dissipation structure 11. For the convenience of connecting to the external power cord, the power connector 70 is located at the bottom of the main box 10. This layout allows the power cord to be directly connected to the power connector 70 after entering the main box 10, without excessive crossing with other circuit modules (such as the main control power board 32 and the main control board 31). This design effectively avoids electromagnetic interference between the power cord and other circuit modules, improving the stability and reliability of signal transmission.

[0193] Specifically, because the power cord is located at the bottom of the main box 10, while the main control module is located at the top, this vertical separation layout ensures that the high-voltage power cord connection will not interfere with the signal of the main control module located above. The communication signal of the main control module can remain stable, thereby ensuring the normal operation of the control and communication functions of the entire electrical control box 100 and improving the reliability and stability of the system.

[0194] Furthermore, the power cord and communication cord are separated vertically, making power connection easier. When connecting the power cord and communication cord, operators can more clearly identify and distinguish between the two types of lines. The power cord and communication cord are not mixed together, reducing the possibility of wiring errors, improving wiring efficiency, and also facilitating subsequent maintenance and repair work.

[0195] like Figure 6 and Figure 7 As shown, a portion of the power connector 70 extends into the second cavity 10a2 and is electrically connected to the filter board. This ensures that after an external power cable is connected, the power signal is first filtered by the filter board, such as removing high-frequency noise and suppressing harmonics, before being transmitted to other circuit modules. This layout reduces the length of the power cable within the control box 100, avoiding interference during power signal transmission. The power connector 70 provides a stable power input, and centralized management of the power cables through the power connector 70 makes the power cable connections more standardized, reducing tangled power cables and improving the tidiness of the control box 100.

[0196] It should be noted that the power terminal block 70 is also positioned facing the access port 200a, making it more convenient for maintenance personnel to perform wiring or maintenance operations. Maintenance personnel can directly access the power terminal block 70 from the access port 200a without needing to reach inside the control box 100 or operate away from the access port 200a, thus reducing operational difficulty and time. When a power cord fault occurs, the power terminal block 70 facing the access port 200a allows maintenance personnel to quickly locate the problem, facilitating timely troubleshooting and repair, and reducing equipment downtime.

[0197] like Figure 15 and Figure 18 As shown, in some embodiments, the heat dissipation structure 11 is provided with a mounting port 11a communicating with the second cavity 10a2. The power connector 70 is installed at the mounting port 11a, which is located on the side of the first cavity 10a1 away from the third cavity 10b. In this embodiment, the first cavity 10a1 and the third cavity 10b are arranged at intervals along the length of the electrical control box 100, and the third cavity 10b is located above the first cavity 10a1. Understandably, the mounting port 11a is located below the first cavity 10a1. The vertical space on the heat dissipation structure 11 is fully utilized, making the overall structure of the electrical control box 100 more compact and saving space, which is particularly suitable for application scenarios with high space requirements. It also achieves electrical isolation between the power connector 70 and the first circuit module 21, reducing the risk of electrical short circuits. The power connector 70 is partially exposed on the side of the heat dissipation structure 11 facing away from the second cavity 10a2, making the connection and disconnection of the power cord more convenient. Maintenance personnel can easily access the power terminal block 70 from the outside without disassembling the entire electrical control box 100, thus improving maintenance efficiency.

[0198] like Figure 18 , Figure 26 and Figure 27 As shown, the electrical control box 100 also includes a first sealing ring 992. The first sealing ring 992 is disposed on the side of the heat dissipation structure 11 facing the second cavity 10a2 and is arranged around the mounting port 11a in the circumferential direction. The power terminal block 70 has a sealing groove 70a. Part of the first sealing ring 992 is embedded in the sealing groove 70a and seals against the bottom wall of the limiting groove 11b, effectively preventing liquids (such as water) and dust from entering the second cavity 10a2 and protecting the electronic components in the second cavity 10a2 from contamination and damage.

[0199] Please continue reading. Figure 18 , Figure 19 , Figure 26 and Figure 27 In some embodiments, the projections of the first cavity 10a1 and the second cavity 10a2 along the thickness direction of the main box 10 overlap, which can make more efficient use of the space inside the main box 10, reduce the overall volume, and make the electrical control box 100 more compact. The first cavity 10a1 has a first edge 10a11 disposed vertically away from the third cavity 10b, while the second cavity 10a2 has a second edge 10a21 disposed vertically away from the third cavity 10b. Understandably, the first edge 10a11 and the second edge 10a21 are the lower edges of the first cavity 10a1 and the second cavity 10a2 respectively in the vertical direction. The first edge 10a11 is disposed closer to the third cavity 10b than the second edge 10a21. That is, the second edge 10a21 of the second cavity 10a2 is disposed further away from the third cavity 10b than the first edge 10a11 of the first cavity 10a1. This avoids excessive overlap or interference between the second cavity 10a2 and the first cavity 10a1. At the same time, it provides sufficient space for each circuit module in each cavity according to actual needs, ensuring the normal installation and operation of the circuit modules.

[0200] The mounting port 11a is located between the first edge 10a11 of the first cavity 10a1 and the second edge 10a21 of the second cavity 10a2, making the mounting port 11a a relatively independent and easy-to-operate area. The power terminal block 70 can be installed vertically between the first cavity 10a1 and the second cavity 10a2. Under the premise of realizing the electrical connection between the filter board and the drive board, the wiring between the power terminal block 70 and the filter board is also more convenient, without needing to occupy the external space of the control box 100.

[0201] Please continue reading. Figure 18 , Figure 26 and Figure 27In some embodiments, the power terminal block 70 includes an insulating base 71 and a conductive post 72. The insulating base 71 is connected to the heat dissipation structure 11 and seals the mounting port 11a. The main function of the insulating base 71 is to provide electrical insulation to prevent accidental current flow between different conductive parts, thereby ensuring the safety and reliability of the power terminal block 70. The conductive post 72 passes through the insulating base 71, that is, the insulating base 71 also serves to support and fix the conductive post 72, ensuring the stable installation of the conductive post 72.

[0202] Furthermore, the conductive post 72 extends along the thickness direction of the main housing 10, with one end of the conductive post 72 extending into the second cavity 10a2 and connecting to the filter board. The conductive post 72 is used to realize the electrical connection between the power cord and the internal circuit (such as the filter board) of the control box 100. Specifically, the second substrate 221 has a third connection hole, and the conductive post 72 has a fourth connection hole on the side facing the second substrate 221. The third connection hole and the fourth connection hole are electrically connected by a connector, which can be a bolt, nut, washer, or other conductive connector. The other end of the conductive post 72 is exposed on the surface of the second cavity 10a2 through the insulating base 71, facilitating the connection of the external power cord.

[0203] The insulating base 71 can be made of polycarbonate (PC), which has good insulation properties and mechanical strength. The conductive post 72 can be made of copper alloy, which has good electrical conductivity.

[0204] like Figure 18 , Figure 26 , Figure 27 and Figure 28 As shown, in some embodiments, the insulating base 71 includes an insulating body 711 and a connecting flange 712 protruding from the outer wall of the insulating body 711. The insulating body 711 is the main part of the insulating base 71 and is mainly used to provide electrical insulation, prevent current from flowing accidentally between different conductive parts, and ensure the safety and reliability of the power terminal block 70. The insulating body 711 extends into the second cavity 10a2, and the conductive post 72 passes through the insulating body 711.

[0205] The heat dissipation structure 11 has a limiting groove 11b surrounding the mounting opening 11a on one side of the second cavity 10a2. The connecting flange 712 is embedded in the limiting groove 11b, meaning the limiting groove 11b is used to accommodate the connecting flange 712 of the insulating base 71. The limiting groove 11b defines the area where the power terminal block 70 is to be installed, and the connecting flange 712 ensures a stable connection between the insulating base 71 and the heat dissipation structure 11. This design not only enhances the stability of the structure but also improves the reliability of installation through the embedded connection method.

[0206] Please continue reading. Figure 18 , Figure 26, Figure 27 and Figure 28 To ensure proper assembly of the power connector 70 and the limiting groove 11b, in some embodiments, a foolproof protrusion 119 is provided on the bottom wall of the limiting groove 11b, and a foolproof hole 712a is provided on the connecting flange 712 to cooperate with the foolproof protrusion 119, effectively preventing assembly problems caused by operator negligence or error, such as incorrect assembly direction or incorrect position. The foolproof protrusion 119 extends along the thickness direction of the main housing 10 and passes through the foolproof hole 712a, which can also limit the position of the power connector 70 from the vertical direction.

[0207] like Figure 4 and Figure 26 As shown, in some embodiments, the electrical control box 100 further includes a terminal block protective shell 80. The terminal block protective shell 80 is connected to the heat dissipation structure 11 and is located on the side of the first cavity 10a1 away from the third cavity 10b. In this embodiment, the third cavity 10b, the first cavity 10a1, and the terminal block protective shell 80 are arranged sequentially along the length direction of the electrical control box 100, and the length direction of the electrical control box 100 is set in the vertical direction. Therefore, the terminal block protective shell 80 is located below the first cavity 10a1. The main function of the terminal block protective shell 80 is to provide additional protection for part of the structure of the power terminal block 70. Understandably, the part of the power terminal block 70 that penetrates into the second cavity 10a2 is covered and protected by the second cover 122, which can prevent external environment (such as dust, moisture, mechanical impact, etc.) from damaging the power terminal block 70, providing a relatively protected environment and reducing the risk of electrical failure caused by external factors. Furthermore, the protective housing 80 for the terminal block makes the maintenance and inspection of the power terminal block 70 more convenient, without the need to disassemble the entire electrical control box 100.

[0208] like Figure 26 , Figure 27 and Figure 28As shown, the terminal block protective housing 80 is provided with a protective cavity 80a and a clearance opening 80b communicating with the protective cavity 80a. The terminal block protective housing 80 includes a first protective half-shell 81 and a second protective half-shell 82 that are mutually overlapping. The first protective half-shell 81 and the second protective half-shell 82 can be firmly connected by fastening screws. The second protective half-shell 82 is further connected to the heat dissipation structure 11 by fastening screws. The first protective half-shell 81 is located on the front side along the thickness direction of the main housing 10, while the second protective half-shell 82 is located on the rear side along the thickness direction of the main housing 10. That is, compared with the first protective half-shell 81, the second protective half-shell 82 is located closer to the heat dissipation structure 11. The first protective half-shell 81 and the second protective half-shell 82 together enclose the protective cavity 80a, which is the internal space of the terminal block protective housing 80 and is used to accommodate part of the power terminal block 70. The clearance opening 80b is located on the side of the second protective half-shell 82 facing the heat dissipation structure 11. The terminal block protective shell 80 also includes a reinforcing strip structure, which surrounds the clearance opening 80b in the circumferential direction and is located inside the protective cavity 80a. This can significantly enhance the overall structural strength of the terminal block protective shell 80 and effectively prevent the protective shell from deforming or being damaged when subjected to external mechanical impact or vibration, thereby improving the durability and reliability of the terminal block protective shell 80.

[0209] like Figure 26 , Figure 27 and Figure 28 As shown, the portion of the power connector 70 exposed outside the main housing 10 extends into the protective cavity 80a via the clearance opening 80b. When the power connector 70 requires maintenance and inspection, it is not necessary to disassemble the entire connector protective shell 80; instead, only the first protective half-shell 81 needs to be removed to expose the portion of the power connector 70. Furthermore, the connector protective shell 80 makes the appearance of the electrical control box 100 neater and more uniform, improving the product's overall appearance quality.

[0210] like Figure 26 , Figure 27 and Figure 28 As shown, in some embodiments, the bottom of the terminal block protective housing 80 is provided with a power cord outlet 80c, which is defined by the first protective half-shell 81 and the second protective half-shell 82, so that the power cord can be directly led out from the bottom of the terminal block protective housing 80, avoiding the messy arrangement of the power cord inside the protective housing, and making the wiring neater and more beautiful.

[0211] like Figure 3 and Figure 15As shown, specifically, the housing 200 includes an outer shell 210 and a chassis 220 disposed at the bottom of the outer shell 210. The chassis 220 is provided with a cable pass-through port 220a opening upwards. The main box 10 is located above the cable pass-through port 220a, and the power cord outlet 80c of the control box 100 is arranged opposite to the cable pass-through port 220a in the vertical direction to shorten the distance between the power cord and the power terminal block 70. The power cord can directly enter the power terminal block 70 inside the main box 10 from the cable pass-through port 220a of the chassis 220, avoiding the circuitous wiring of the power cord inside the housing 200, making the wiring operation more convenient.

[0212] like Figure 6 and Figure 15 As shown, in some embodiments, the electrical control box 100 further includes a cable outlet structure 94, which is connected to the terminal block protective shell 80 and located inside the protective cavity 80a. The cable outlet structure 94 is disposed opposite to the power cord outlet 80c, and a cable outlet cavity 94a communicating with the power cord outlet 80c is formed on the cable outlet structure 94. The power cord can pass through the protective cavity 80a in sequence through the cable outlet cavity 94a and the power cord outlet 80c, providing an orderly channel for the power cord and ensuring that the power cord can safely and stably pass out from the inside of the electrical control box 100.

[0213] like Figure 6 , Figure 15 , Figure 27 and Figure 28 As shown, specifically, the cable exit structure 94 includes a first cable exit base 941 and a second cable exit base 942 connected together. The first cable exit base 941 is connected to the second protective half-shell 82. The cable exit structure 94 is locked by screws that are sequentially inserted through the second cable exit base 942, the first cable exit base 941, and the second protective half-shell 82. The cable exit cavity 94a has a first cavity wall 9411 and a second cavity wall 9421 arranged opposite to each other. The first cavity wall 9411 is formed on the first cable exit base 941, and the second cavity wall 9421 is formed on the second cable exit base 942. It can be understood that the power cord can be clamped between the first cavity wall 9411 and the second cavity wall 9421. Among them, the first cavity wall 9411 has a plurality of spaced cable exit recesses 9411a. The plurality of cable exit recesses 9411a can accommodate a plurality of power cords respectively, making the layout of the power cord more orderly and avoiding messy wire bundles. Furthermore, the outlet notch 9411a can effectively guide the power cord's path, preventing the power cord from twisting or being damaged during the insertion process.

[0214] like Figure 8As shown, in some embodiments, the heat dissipation structure 11 further includes a first enclosure 112 and a second enclosure 113 integrally formed with the cold plate body 111. The integrated heat dissipation structure 11 enhances the overall strength and durability, reducing the risk of damage due to vibration or impact. The cold plate body 111 is plate-shaped and is typically made of a material with good thermal conductivity (such as aluminum alloy or copper alloy) to ensure efficient heat conduction. The heat dissipation structure 11 has heat dissipation channels for the flow of heat exchange medium. These channels are mainly formed on the cold plate body 111 and can remove heat through coolant or airflow. The design of the heat dissipation channels can effectively absorb the heat generated by electronic components and conduct and dissipate it through the channels, keeping the internal temperature of the control box 100 within a reasonable range.

[0215] In this embodiment, the heat dissipation channel includes multiple straight segments and multiple curved segments, which are connected in an alternating manner to increase the contact area between the cooling medium (such as air or coolant) and the heat dissipation surface, thereby improving the heat dissipation efficiency.

[0216] like Figure 7 and Figure 8 As shown, the first enclosure 112 and the second enclosure 113 are connected to the same side of the cold plate body 111. The first enclosure 112 and the second enclosure 113 extend along the thickness direction of the main box body 10, and a portion of the cold plate body 111 forms the common cavity wall of the first cavity 10a1 and the second cavity 10a2. The first enclosure 112 and the second enclosure 113 are arranged at intervals in the vertical direction. The first box cover 121 is sealed to the side of the first enclosure 112 away from the cold plate body 111 to form the first cavity 10a1. The third box cover 123 is sealed to the side of the second enclosure 113 away from the cold plate body 111 to form the third cavity 10b. This sealing fit can effectively prevent dust and moisture from entering and protect the internal circuit modules.

[0217] By using die casting, the cold plate body 111, the first enclosure plate 112, and the second enclosure plate 113 can be integrally formed, reducing assembly steps and improving production efficiency. It also allows for precise control of the shape and size of the heat dissipation channels, thereby optimizing heat dissipation performance. Specifically, the cold plate body 111 includes a cold plate substrate 1111 and a channel portion 1112. Along the thickness direction of the cold plate substrate 1111, the channel portion 1112 protrudes from at least one side relative to the cold plate substrate 1111, so that the aforementioned heat dissipation channels are formed within the channel portion 1112. In this embodiment, the heat dissipation channel 1112 protrudes towards the side of the first cavity 10a1, meaning the heat dissipation channel is mainly arranged in the part of the cold plate body 111 that forms the first cavity 10a1, and this part also forms the second cavity 10a2. Furthermore, the heat dissipation channel can also be arranged circumferentially around the first enclosure 112, effectively guiding heat away from all directions of the first enclosure 112 and reducing heat accumulation in local areas. Since the drive board typically contains high-power electronic components, such as power conversion modules and drive modules, these components generate a large amount of heat during operation. Therefore, the heat dissipation requirement of the first cavity 10a1 is relatively high. Although the filter board in the second cavity 10a2 also generates heat, its heat dissipation requirement is relatively lower than that of the drive board. Therefore, the second cavity 10a2 and the first cavity 10a1 share a heat dissipation channel, which can effectively utilize heat dissipation resources. Although the main control board 31 and the main control power board 32 in the third cavity 10b also generate heat during operation, their heat dissipation requirements are relatively low. Therefore, the heat dissipation requirement of the third cavity 10b is not high, and the efficiency of radiative heat dissipation can be increased by coating the inner surface of the third cavity 10b with a coating with a high emissivity.

[0218] like Figure 7 and Figure 13 As shown, in some embodiments, the cold plate body 111 has a heat dissipation protrusion 1113. The heat dissipation protrusion 1113 is located in the flow channel portion 1112, that is, part of the heat dissipation flow channel is located inside the heat dissipation protrusion 1113. The heat dissipation protrusion 1113 protrudes towards the side facing the first cavity 10a1. It should be noted that the cross-sectional area of ​​the heat dissipation flow channel located inside the heat dissipation protrusion 1113 is larger than the cross-sectional area of ​​the heat dissipation flow channel located outside the heat dissipation protrusion 1113. Furthermore, a heat-conducting surface 1113a is formed on the side of the heat dissipation protrusion 1113 facing the first cover 121. The electrical control box 100 also includes a fan drive and a compressor drive. The main function of the fan drive is to control the operation of the fan in the HVAC equipment. It receives instructions from the main control board 31 to adjust the fan speed and operating status, thereby controlling the airflow. The main function of the compressor drive is to control the operation of the compressor in the HVAC equipment. The compressor is a core component of the refrigeration or heating system, transferring heat by compressing the refrigerant.

[0219] The fan drive and compressor drive are both connected to the drive plate and attached to the heat-conducting surface 1113a. That is, the fan drive and compressor drive are located between the heat dissipation boss 1113 and the drive plate. Since the fan drive and compressor drive will generate a lot of heat during operation, the heat generated by the fan drive and compressor drive can be quickly carried away by the heat exchange medium in the heat dissipation channel, avoiding performance degradation caused by heat accumulation.

[0220] Furthermore, the heat dissipation structure 11 also includes a flow channel connector 120, which communicates with the heat dissipation flow channel. The flow channel connector 120 can guide the cooling medium (such as coolant or air) to enter and exit the heat dissipation flow channel more efficiently. The flow channel connector 120 is arranged circumferentially along the first enclosure plate 112, and the flow channel structure and the first enclosure plate 112 are an integral structure, making the heat dissipation structure 11 more compact, reducing external connecting parts, and lowering installation difficulty and maintenance costs.

[0221] like Figure 21 , Figure 23 , Figure 24 and Figure 29 As shown, to improve the sealing effect between the first cover 121 and the first enclosure 112, in some embodiments, the electrical control box 100 further includes a second sealing element 97. The inner wall surface of the first enclosure 112 forms a mating inner circumferential surface 112a. The second sealing element 97 is disposed on the first cover 121 and can be fitted onto the first cover 121 so that the second sealing element 97 does not fall out of the preset position. The second sealing element 97 presses against the mating inner circumferential surface 112a, that is, the second sealing element 97 fits tightly with the mating inner circumferential surface 112a of the first enclosure 112 through elastic deformation, forming a good sealing effect and further improving the overall sealing performance of the first cavity 10a1. Understandably, the formation of the second sealing element 97 is adapted to the shape of the first enclosure 112. For example, when the first enclosure 112 is roughly square, the second sealing element 97 is set as a square sealing ring so that the second sealing element 97 fits more closely with the inner wall surface of the first enclosure 112.

[0222] like Figure 21 , Figure 23 , Figure 24 and Figure 29 As shown, in some embodiments, the first cover 121 includes a cover body 1211 and a cover flange 1212 connected together. The cover body 1211 is used to form part of the cavity wall of the first cavity 10a1, and the cover body 1211 is in contact with the first enclosure 112. The cover flange 1212 is located inside the first cavity 10a1. The second seal 97 is installed on the cover flange 1212, and the cover flange 1212 provides good support and positioning for the seal, facilitating quick installation.

[0223] The cover body 1211 includes a cover portion 1211a and a flange portion 1211b connected together. The cover portion 1211a is used to form part of the cavity wall of the first cavity 10a1. The cover portion 1211a has a portion that is generally parallel to the cold plate body 111 and a portion that is generally perpendicular to the cold plate body 111. The flange portion 1211b is connected to the end of the cover portion 1211a, that is, the portion that is perpendicular to the cold plate body 111, and extends in the left and right direction of the main box 10. The cover flange 1212 is connected to the connection between the cover portion 1211a and the flange portion 1211b. The first enclosure 112 includes an enclosure body 1121 and an enclosure flange 1122 connected to the outside of the enclosure body 1121. The cover flange 1212 passes through the enclosure body 1121 so that the flange portion 1211b abuts against the enclosure flange 1122.

[0224] Please continue reading. Figure 21 , Figure 23 and Figure 24 The cover flange 1212 includes a connected extension 1212a and a stop 1212b. The extension 1212a is arranged approximately parallel to the main body 1121 of the enclosure, while the stop 1212b is arranged at an angle to the extension 1212a. The stop 1212b extends from the position connected to the extension 1212a toward the main body 1121 of the enclosure, and a limiting space is defined between the stop 1212b, the extension 1212a, and the main body 1121 of the enclosure. The second seal 97 is disposed in the limiting space, and the stop 1212b can prevent the second seal 97 from disengaging from the limiting space along the thickness direction of the main box 10.

[0225] Please continue reading. Figure 21 , Figure 23 and Figure 29 In some embodiments, the second seal 97 is made of an elastic material, such as rubber or silicone. The second seal 97 includes a sealing body 971 and a sealing lip 972. The sealing body 971 is mounted on the cover flange 1212 and provides stable support for the second seal 97, ensuring that the second seal 97 remains in a preset position during use and will not shift due to vibration or external force. A sealing lip 972 is provided on the side of the sealing body 971 facing the mating inner circumferential surface 112a. The sealing lip 972 can be provided in multiple rings. The multiple sealing lips 972 are arranged on the sealing body 971 along the thickness direction of the main box 10, and the sealing lips 972 press against the mating inner circumferential surface 112a. The design of the sealing lip 972 can closely fit the inner circumferential surface of the first enclosure 112, block the gap between the enclosure body 1121 and the cover flange 1212, form a more effective sealing barrier, and prevent dust, moisture and other pollutants from entering the first cavity 10a1. The sealing lip 972 can adapt to the unevenness of the surface of the first enclosure 112 and produce corresponding elastic deformation to improve the sealing effect.

[0226] Furthermore, the sealing lip 972 extends obliquely from the sealing body 971 toward the side where the cover body 1211 is located, that is, the sealing lip 972 is obliquely inclined away from the cold plate body 111. When the sealing lip 972 is obliquely inclined toward the cover body 1211, it can effectively guide the inflowing water along the inclined surface of the sealing lip 972 to the outside, instead of entering and flowing into the first cavity 10a1. If the sealing lip 972 is obliquely inclined toward the cold plate body 111, it may cause water to accumulate between the cover flange and the first enclosure plate 112, and guide the inflowing water toward the cold plate body 111. Therefore, obliquely inclining the sealing lip 972 toward the cover body 1211 is a more reasonable structural design, which can effectively prevent water from entering the first cavity 10a1 and protect the internal components inside the first cavity 10a1.

[0227] In some embodiments, at least one side of the upper and lower ends of the flange 1211b can be securely connected to the flange 1122 of the surrounding plate by means of a screw. The tightening action of the screw can ensure that the flange 1211b and the flange 1122 of the surrounding plate are tightly fitted, further enhancing the sealing performance and ensuring that the second seal 97 is properly pressed during installation.

[0228] In one configuration, the lower side of the flange 1211b is connected to the flange 1122 of the enclosure plate by means of fastening screws. The heat dissipation structure 11 also includes a support base, which can be connected to the cold plate body 111 and protrudes towards the side of the first cover 121. The upper side of the flange 1211b is rotatably connected to the support base. When maintenance personnel need to inspect the first cavity 10a1, they can remove the screws on the lower side of the flange 1211b and then flip the flange 1211b to expose the internal first circuit module 21, which reduces the steps of disassembly and reinstallation and improves maintenance efficiency.

[0229] Specifically, a rotating shaft is provided on the upper side of the flange 1211b, and a plug-in hole is provided on the support base. The two ends of the rotating shaft pass through the plug-in hole so that the first cover 121 is rotatably connected to the support base. Furthermore, the electrical control box 100 also includes a damping element, which is sleeved on the rotating shaft and located between the outer wall of the rotating shaft and the inner wall of the plug-in hole. When the rotating shaft rotates in the plug-in hole, the damping element provides a certain resistance, allowing the first cover 121 to be suspended at any angle, so that maintenance personnel do not need assistance from others when performing maintenance, facilitating the maintenance work.

[0230] In some embodiments, the heat dissipation structure 11 further includes a third enclosure (not shown), which is also integrally formed with the cold plate body 111, significantly enhancing the integrity and stability of the heat dissipation structure 11. This design makes the heat dissipation structure 11 more robust and better able to withstand the heat generated by the internal circuit modules and external mechanical pressure. The third enclosure is connected to the side of the cold plate body 111 facing away from the first enclosure 112, and the second cover 122 is sealed to the side of the third enclosure away from the cold plate body 111 to form a second cavity 10a2, which can better seal the second cavity 10a2, preventing external impurities such as dust and moisture from entering and improving the protection level of the electrical control box 100.

[0231] In another configuration, the second cover 122 seals the side of the cold plate body 111 facing away from the first enclosure 112 to form the second cavity 10a2. Since the second cover 122 seals the side of the cold plate body 111 facing away from the first enclosure 112 directly, there is no need to set up an additional enclosure. The process is simpler, which can improve production efficiency and reduce manufacturing costs.

[0232] like Figure 6 , Figure 16 and Figure 17 As shown, specifically, the cold plate body 111 has a mounting boss 114 protruding on the side facing the second cover 122. The second cover 122 covers the mounting boss 114, and the second cover 122 and the mounting boss 114 together form the second cavity 10a2. The mounting boss 114 is provided with a limiting protrusion 118, which surrounds the circumference of the mounting boss 114 and defines the installation area of ​​the second circuit module 22. The inner wall of the second cover 122 is located outside the limiting protrusion 118. The side of the second cover 122 facing the mounting boss 114 has a sealing groove 122a. The electrical control box 100 also includes a second sealing ring 993. Part of the second sealing ring 993 is embedded in the sealing groove 122a and seals against the mounting boss 114, effectively preventing external dust, moisture and other impurities from entering the second cavity 10a2.

[0233] Furthermore, the second cover 122 is provided with a plurality of first connecting ears 1221 spaced apart in the circumferential direction. The first connecting ears 1221 have first threaded holes. The heat dissipation structure 11 is provided with second threaded holes that are opposite to the first threaded holes. The second threaded holes are located on the outside of the mounting boss 114. The electrical control box 100 also includes screws that pass through the first threaded holes and the second threaded holes, so that the second cover 122 is tightly connected to the heat dissipation structure 11, thereby improving the sealing performance of the second cavity 10a2.

[0234] like Figure 3As shown, in some embodiments, the control box 100 further includes a central module, a central housing 60, and a central communication line. The central module is responsible for handling specific control or communication tasks. The central housing 60 is independently configured from the main housing 10. The central module is located within the central housing 60, which provides installation space and protection for the central module, better protecting it from external environmental factors (such as dust and moisture). The independent configuration of the central housing 60 and the main housing 10 enables a modular design, making the assembly and maintenance of the control box 100 more flexible and convenient. The positions of the central housing 60 and the main housing 10 can also be set according to actual needs. Furthermore, the independent configuration of the central housing 60 allows the central module to be replaced or upgraded according to different application requirements, improving the system's adaptability and flexibility. Due to the independence of the central module, maintenance and troubleshooting can be more centralized and efficient, reducing overall downtime.

[0235] Specifically, the central module, as one of the core control units of the electrical control box 100, connects to various key components to monitor and control the operating status of the entire HVAC system. Specifically, the central module can be connected to a four-way valve assembly, a one-way solenoid valve assembly, and an electronic expansion valve assembly for precise control of the refrigerant flow direction and flow rate. The four-way valve assembly controls the switching of refrigerant flow direction, enabling the conversion between cooling and heating modes; the one-way solenoid valve assembly controls the on / off state of the refrigerant, ensuring stable system operation under different operating conditions; and the electronic expansion valve assembly optimizes the system's cooling efficiency through precise adjustment of the refrigerant flow rate.

[0236] The central module is also connected to temperature and pressure sensor wiring harnesses for real-time monitoring of temperature and pressure changes in the system. The temperature sensor wiring harnesses transmit the monitored temperature signals to the central module, which then uses these signals to control the system temperature, ensuring that the system operates within the set temperature range. The pressure sensor wiring harnesses transmit data on the monitored system pressure to prevent system failures caused by abnormal pressure.

[0237] The central housing 60 includes a main body and two cable conduits connected to and communicating with the main housing. The central module is housed within the main housing. One cable conduit is positioned close to the main housing 10, through which the central communication line, temperature sensor cable group, and pressure sensor cable group are run. The other cable conduit, containing the four-way valve cable group, single-way solenoid valve cable group, and electronic expansion valve cable group, is run through the other cable conduit away from the main housing 10. This arrangement of different types of wiring within separate conduits makes the wiring clearer and more organized. During installation and maintenance, operators can more easily identify and handle various cables, reducing the possibility of cable crossings and confusion, improving maintenance efficiency, and lowering maintenance costs.

[0238] Please continue reading. Figure 3 As mentioned above, the central housing 60 is independently configured from the main housing 10. In some embodiments, the central housing 60 can be located on the rear side of the main housing 10, away from the inspection port 200a. This allows the drive board (located in the first cavity 10a1), which requires frequent maintenance, to be placed near the inspection port 200a. The central housing 60 typically contains important communication and control lines; placing it on the rear side avoids misoperation of these critical lines during maintenance. Furthermore, separating the high-voltage area (drive board) and the low-voltage area (central module) conforms to the principle of zoned management of electrical equipment, avoiding electromagnetic interference between high and low voltage lines.

[0239] As mentioned above, a switching valve is installed inside the casing 200. A switching valve is a valve used to control the flow direction of fluids (such as refrigerant, air, etc.). It switches the flow direction of the fluid by changing the position of the valve core, thereby achieving the switching of different operating modes. Specifically, the switching valve can be a four-way valve. The four-way valve achieves the switching between cooling and heating modes by switching the flow direction of the refrigerant. The central housing 60 can be connected to the switching valve via a bracket. Understandably, various sensors, electronic valve bodies, etc., are installed on the refrigerant piping connected to the switching valve. This application installs the central housing 60 near the switching valve, allowing it to be closer to the sensors and electronic valve bodies in the outdoor unit 2, resulting in shorter wiring and simplifying the overall wiring of the unit.

[0240] The third circuit module 30 is the main control module. The central module is electrically connected to the main control module via a central communication line to achieve data exchange and control signal transmission, ensuring efficient and stable communication between the central module and the main control module, which is particularly important for real-time control systems. The independent setting of the central box 60 also facilitates the wiring between the central module and the main control module, allowing designers to optimize the internal layout of the central box 60 according to actual needs, making the wiring more reasonable and reducing signal loss caused by excessive wiring or unreasonable layout.

[0241] like Figure 4 and Figure 15As shown, in some embodiments, the first enclosure 112 and the second enclosure 113 are arranged at intervals in the vertical direction. The first enclosure 112, the second enclosure 113, and the cold plate body 111 cooperate to define a wire passage groove 10c. That is, the parts of the first enclosure 112 and the second enclosure 113 that are arranged opposite to each other and the cold plate body 111 form a wire passage groove 10c. The opening of the wire passage groove 10c is connected to the outside. The central communication line enters the third cavity 10b through the wire passage groove 10c to be electrically connected to the main control module. That is, the central communication line can pass through the wire passage groove 10c and then through the bottom of the second enclosure 113 to enter the third cavity 10b. The wire passage groove 10c provides a fixed path for the central communication line, making the arrangement of the central communication line more neat and orderly, avoiding messy lines, and facilitating installation and maintenance.

[0242] The power terminal block 70 and the cable tray 10c are positioned opposite each other on the opposite sides of the frequency converter drive module 20, making the paths of power lines and communication lines within the control box 100 clearer. This layout avoids crossings between power lines and communication lines, reduces electromagnetic interference, and improves the stability and reliability of signal transmission. Furthermore, the relative arrangement of the power terminal block 70 and the cable tray 10c makes the internal wiring zones of the control box 100 more clearly defined. When maintenance or repair is required, technicians can quickly locate the power terminal block 70 and the cable tray 10c, reducing the time spent searching for wiring and improving maintenance efficiency.

[0243] Furthermore, the power terminal block 70 and the cable tray 10c are located on different sides of the frequency converter drive module 20, which helps to separate the power line and the communication line, avoids the strong current of the power line from interfering with the weak current signal of the communication line, and ensures the stability and reliability of the communication signal.

[0244] Specifically, in one configuration, the first cavity 10a1 is positioned below the second cavity 10a2, and the power terminal block 70 is located at the bottom of the main housing 10, opposite to the cable tray 10c on the upper and lower sides of the frequency converter drive module 20. Because the power cable is located at the bottom of the main housing 10, while the main control module is located above, this vertical separation layout prevents the high-voltage power cable from interfering with the signal of the main control module located above. This ensures stable communication signals for the main control module, thereby guaranteeing the normal operation of the control and communication functions of the entire control box 100 and improving the reliability and stability of the system.

[0245] Furthermore, the power cord and communication cord are separated vertically, making power connection easier. When connecting the power cord and communication cord, operators can more clearly identify and distinguish between the two types of lines. The power cord and communication cord are not mixed together, reducing the possibility of wiring errors, improving wiring efficiency, and also facilitating subsequent maintenance and repair work.

[0246] like Figure 4 , Figure 15 and Figure 16 As shown, in some embodiments, the cable tray 10c extends through opposite sides of the main housing 10 along its extension direction to form a first cable port 10c1 and a second cable port 10c2. The main control module includes a main control circuit board and peripheral interfaces. The main control circuit board is the core part of the main control module, responsible for processing data from different parts and responding to maintain the normal operation of the system. The peripheral interfaces are the interfaces for communication and control between the main control module and external devices. The central interface is located closer to the second cable port 10c2 than the peripheral interfaces. The peripheral communication lines of external devices enter the cable tray 10c through the first cable port 10c1 and are electrically connected to the peripheral interfaces. The peripheral communication lines may include 4G module lines, engineering connection communication lines, etc. The peripheral communication lines are concentrated on one side of the main housing 10, while the central communication lines enter the cable tray 10c through the second cable port 10c2 and are electrically connected to the central interface. That is, the central communication lines (usually used for communication between internal modules) are concentrated on the other side, allowing users to more intuitively identify and distinguish the wiring areas of different functions. This clear zoning reduces user confusion and the possibility of errors during wiring. When installing or maintaining equipment, users only need to focus on the external communication cable interfaces on one side, eliminating the need to search for the correct interfaces in a complex wiring environment. This simplified design makes the wiring process more efficient, reduces operation time and difficulty, and clearly distinguishes between user-operated areas and internal maintenance areas.

[0247] Furthermore, by positioning the central interface closer to the second cable port 10c2 and the peripheral interface closer to the first cable port 10c1, the peripheral communication lines and the central communication lines extend along their respective independent paths within the cable tray 10c, avoiding cross-layouts. This layout effectively reduces electromagnetic interference between lines and improves the stability and reliability of signal transmission. It ensures that both peripheral and central communication lines can reach their corresponding interfaces via the shortest possible path after entering the cable tray 10c. This design reduces the length of the signal transmission path, lowers signal loss during transmission, and improves signal transmission efficiency.

[0248] In this embodiment, the cable tray 10c extends through the left and right sides of the main housing 10 to form a first cable port 10c1 located on the left and a second cable port 10c2 located on the right. The central interface is located to the right of the peripheral interface, concentrating the peripheral communication lines on the left side of the main housing 10. The central communication line enters the cable tray 10c through the second cable port 10c2 and is electrically connected to the central interface. That is, the central communication line (usually used for communication between internal modules) is concentrated on the right side, allowing users to more intuitively identify and distinguish the wiring areas of different functions.

[0249] In other embodiments, the central interface can also be configured to be closer to the first cable port 10c1 than the peripheral interface. In this case, the peripheral communication line of the external device enters the cable tray 10c through the second cable port 10c2 and is electrically connected to the peripheral interface; while the central communication line enters the cable tray 10c through the first cable port 10c1 and is electrically connected to the central interface. The purpose is still to distinguish between the external wiring side and the internal wiring side, which will not be elaborated here.

[0250] Based on the above, it can be seen that the power terminal block 70 and the cable tray 10c are located on different sides of the first cavity 10a1, which helps to separate the power line from the communication line (peripheral communication line, central communication line), avoids the strong current of the power line from interfering with the weak current signal of the communication line, and ensures the stability and reliability of the communication signal.

[0251] like Figure 16 , Figure 29 As shown, in some embodiments, a first notch 113a is formed on the side of the second enclosure 113 facing the third cover 123, and the first notch 113a connects the outside to the third cavity 10b. The electrical control box 100 also includes a third seal 98, which is installed in and covers the first notch 113a. The third seal 98 can reduce the entry of external moisture, dust and other impurities into the third cavity 10b. The third seal 98 presses against the second enclosure 113 to connect the third seal 98 to the second enclosure 113. The third seal 98 has a wiring groove 982a or a wiring hole. One end of the central communication line is connected to the third circuit module 30, and the other end of the central communication line is guided out of the third cavity 10b by the wiring groove 982a or the wiring hole. The wiring groove 982a or the wiring hole provides a clear guiding path for the central communication line, so that the central communication line can be neatly and orderly led out from the inside of the third cavity 10b. The neat arrangement of the central communication line makes subsequent maintenance and inspection more convenient.

[0252] like Figure 29 and Figure 30 As shown, specifically, the third seal 98 includes an integrally constructed sealing body 981 and a wire-passing portion 982. The sealing body 981 is located closer to the second enclosure 113 than the wire-passing portion 982. The sealing body 981 has a slot 981a that engages with the second enclosure 113, allowing the sealing body 981 to be inserted into the second enclosure 113. Therefore, the third seal 98 can be tightly connected to the second enclosure 113. The wire-passing portion 982 has the aforementioned wiring groove 982a or wiring hole. The wire-passing portion 982 is located on the side near the third cover 123, so that maintenance personnel can directly access the central communication line passing through the wire-passing portion 982 after disassembling the third cover 123, facilitating maintenance work.

[0253] Furthermore, the slot 981a has a first slot wall and a second slot wall arranged opposite to each other. The first slot wall is located inside the third cavity 10b and is in contact with the inner wall of the second enclosure 113, while the second slot wall is located outside the third cavity 10b and is in contact with the outer wall of the second enclosure 113. The relative arrangement of the first slot wall and the second slot wall forms a clamping space, which can firmly fix the third seal 98 on the second enclosure 113 and prevent it from loosening or shifting during use.

[0254] In some embodiments, the third seal 98 is made of an elastic material, such as rubber or silicone, to accommodate central communication lines of different thicknesses. A wiring groove 982a is provided on the wire guide portion 982, with its opening facing the third cover 123 and extending vertically through the wire guide 982a. A limiting hole 982b is formed on the bottom wall of the wiring groove 982a to limit the central communication line. The central communication line can be squeezed into the wiring groove 982a, allowing the opposite sides of the wiring groove 982a to deform according to the diameter of the central communication line. The wiring groove 982a can also guide the central communication line to finally be placed into the limiting hole 982b.

[0255] The diameter of the limiting hole 982b is larger than the width of the wiring groove 982a, which can reduce the central communication line passing through the limiting hole 982b from moving out through the wiring groove 982a, and ensure that the central communication line always stays in the correct position during use.

[0256] Furthermore, the cable guide section 982 is provided with multiple spaced wiring slots 982a, which are arranged sequentially along the left and right direction of the cable guide section 982. This avoids entanglement and confusion between multiple central communication lines, making the wiring process more orderly. It can also effectively isolate different central communication lines, reduce electromagnetic interference between signals, and improve the quality of signal transmission.

[0257] like Figure 6 and Figure 7 As shown, in some embodiments, the first enclosure 112 is provided with a fan wiring section 91 and a compressor wiring section 92. The fan wiring section 91 is used to connect the power supply and signal lines for controlling the fan, ensuring that the fan can operate normally according to system requirements. The compressor wiring section 92 is used to connect the power supply and control signal lines for the compressor, ensuring that the compressor can operate normally according to system requirements. The fan wiring section 91 and the compressor wiring section 92 are located on at least one side of the wall on opposite sides of the first enclosure 112. Since both the fan wiring section 91 and the compressor wiring section 92 need to be connected to the drive board in the first sub-cavity, it is more convenient to connect the fan wiring section 91 and the compressor wiring section 92 to the filter board by setting them on opposite sides of the first enclosure 112.

[0258] In this embodiment, the first enclosure 112 has left and right sides arranged opposite to each other in the left and right direction. The fan wiring part 91 and the compressor wiring part 92 are arranged on the wall in the left and right direction of the first enclosure 112, which makes full use of the space on the left and right sides of the first enclosure 112, avoids the space waste caused by the centralized arrangement of the fan wiring part 91 and the compressor wiring part 92, and improves the overall space utilization of the electrical control box 100.

[0259] Specifically, the drive board is equipped with a fan connector and a compressor connector. The fan connector is installed in the fan wiring section 91, and the compressor connector is installed in the compressor wiring section 92. The fan connector is used to connect the power supply line and control signal line of the fan to the fan wiring section 91, and the compressor connector is used to connect the power supply line and control signal line of the compressor to the compressor wiring section 92. By installing the fan connector and the compressor connector on the drive board, all electrical connections related to the fan and the compressor are concentrated in one place, which facilitates management and maintenance.

[0260] like Figure 6 and Figure 7 As shown, the fan wiring section 91 and the compressor wiring section 92 are arranged vertically, and both are adjacent to the second wiring channel 52a inside the main box 10, which optimizes the wiring path and reduces the wiring length. This fully utilizes the space on the side wall of the main box 10, making the layout of the entire electrical control box 100 more reasonable and avoiding messy wiring.

[0261] Since the fan wiring section 91 and the compressor wiring section 92 are located on the side wall of the first enclosure 112, rather than on the first cover 121, there will be no interference with the fan wiring section 91 and the compressor wiring section 92 when the filter board is removed from the first cover 121 for maintenance. Interference with the external power line connected to the bottom power terminal 70 can also be avoided.

[0262] It should be noted that there are two sets of fan wiring section 91 and compressor wiring section 92, and two drive boards are also provided. Each drive board is connected to one set of fan wiring section 91 and compressor wiring section 92. The main housing 10 has a width direction. The fan wiring section 91 and compressor wiring section 92 corresponding to one drive board are located on one side wall of the first enclosure 112 along the width direction, and the fan wiring section 91 and compressor wiring section 92 corresponding to the other drive board are located on the other side wall of the first enclosure 112 along the width direction. Each set of fan wiring section 91, compressor wiring section 92 and corresponding drive board is relatively independent. When one set fails, it will not affect the normal operation of the other set, which facilitates quick fault location and repair.

[0263] Furthermore, distributing the two sets of fan wiring sections 91 and compressor wiring sections 92 on both sides of the first enclosure 112 helps to disperse heat. This layout avoids heat concentration, thereby improving the heat dissipation performance of the electrical control box 100 and extending the lifespan of electronic components. It also makes the internal wiring partitions of the electrical control box 100 clearer. When maintenance or repair is required, technicians can quickly locate the corresponding fan wiring section 91, compressor wiring section 92, and drive board, reducing the time spent searching for wiring and improving maintenance efficiency.

[0264] Specifically, a set of fan wiring terminals 91 and compressor wiring terminals 92 are provided on both sides of the left and right walls of the first enclosure 112. The fan wiring terminal 91 and compressor wiring terminal corresponding to one drive plate are located on the left wall of the first enclosure 112, and the fan wiring terminal 91 and compressor wiring terminal 92 corresponding to the other drive plate are located on the right wall of the first enclosure 112. This makes full use of the space on both sides of the first enclosure 112, avoids the space waste caused by centralized wiring, and makes the internal layout of the electrical control box 100 more compact. Moreover, the fan wiring terminal 91 is configured to connect two fans, and the compressor wiring terminal 92 is configured to connect one compressor, that is, a total of four fans and two compressors can be connected on both sides, which improves the expandability of the HVAC equipment and can meet the needs of different application scenarios for the number of fans and compressors.

[0265] like Figure 8 , Figure 13 and Figure 15 As shown, the cold plate body 111 further includes a blocking groove 111a, which can be formed on the circumferential direction of the cavity wall of the first cavity 10a1. The cavity wall of the first cavity 10a1 refers to the portion of the cavity wall formed by the cold plate body 111. The blocking groove 111a can be located between the heat dissipation channel and the fan wiring portion 91 and / or the compressor wiring portion 92. It is understood that during the operation of the electrical control box 100 of this application, the coolant flowing through the heat dissipation channel can quickly remove the heat conducted to the cold plate body 111, resulting in high heat dissipation efficiency. In practical applications, the refrigerant of the air conditioning system can be used as the coolant, and a refrigerant bypass can be set aside as the cooling flow path. In this way, the temperature of the cold plate body 111 will be relatively low. By forming a sealed cavity, this application can greatly reduce the entry of external water vapor into the cavities where the circuit boards are located, so as to avoid the possibility of condensation forming in the sealed cavity as much as possible. This can improve the reliability of the electrical control box 100 during operation. By setting the blocking groove 111a, the transfer of cold energy to the fan wiring section 91, compressor wiring section 92 and power terminal 70 can be reduced, thereby reducing the possibility of condensation in the fan wiring section 91, compressor wiring section 92 and power terminal 70 due to low temperature. This can further improve the safety of the electrical control box 100.

[0266] like Figure 7 and Figure 31 As shown, in some embodiments, the filter board further includes a common-mode inductor 222, and the control box 100 further includes a reactance 991. Both the common-mode inductor 222 and the reactance 991 are disposed within the second cavity 10a2. The common-mode inductor 222 is used to suppress common-mode noise in the circuit, ensuring the stability and reliability of signal transmission, while the reactance 991 is used to adjust the impedance characteristics of the circuit and optimize its performance. Specifically, the common-mode inductor 222 is disposed on the second substrate 221 and located between the cold plate body 111 and the second substrate 221. The common-mode inductor 222 can be fixed to the cold plate body 111 by potting glue to ensure that the common-mode inductor 222 will not shift due to vibration or external force during use. The reactance 991 is mounted on the cold plate body 111 and located on the outside of the filter board, spaced apart from it. Since the reactance 991 generates a magnetic field during operation, placing the reactance 991 on the outside of the filter board can prevent the magnetic field generated by the reactance 991 from interfering with the normal operation of the filter board.

[0267] In this embodiment, two reactors 991 are provided. One reactor 991 is located on one side of the filter plate in the left-right direction, and the other reactor 991 is located on one side of the filter plate in the up-down direction. Both reactors 991 are connected to the cold plate body 111, which can increase the contact area between the reactor 991 and the cold plate body 111, thereby more effectively conducting heat to the cold plate body 111.

[0268] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0269] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electric control box, characterized by, include: The main box body has a first cavity and a second cavity inside. The first cavity and the second cavity are arranged at intervals relative to each other in the thickness direction of the main box body. The portion of the main box body located between the first cavity and the second cavity has a first opening, which connects the first cavity and the second cavity. A first circuit module and a second circuit module, wherein the first circuit module is disposed within the first cavity, and the second circuit module is disposed within the second cavity; and An electrical connection structure is provided through the first opening, and its two ends are respectively connected to the first circuit module and the second circuit module to electrically connect the first circuit module and the second circuit module.

2. The electrically controlled box according to claim 1, wherein The main box includes a heat dissipation structure, a first box cover, and a second box cover. The first box cover cooperates with the heat dissipation structure to form the first cavity, and the second box cover cooperates with the heat dissipation structure to form the second cavity. The heat dissipation structure has a first side and a second side, the first cavity and the second cavity are respectively located on the first side and the second side of the heat dissipation structure, and the heat dissipation structure is provided with the first opening.

3. The electric control box according to claim 2, wherein The power connection structure includes: An insulating base is installed at the first opening; and A power connection post is disposed on the insulating base and passes through the first opening, with its two ends respectively connected to the first circuit module and the second circuit module.

4. The electric control box according to claim 3, wherein The first circuit module includes a first substrate with a first power contact hole. The second circuit module includes a second substrate with a second power contact hole. The two ends of the power contact post are respectively provided with a first connection hole and a second connection hole. The first connection hole and the first power contact hole are electrically connected by a connector. The second connection hole and the second power contact hole are electrically connected by a connector.

5. The electric control box according to claim 4, wherein The heat dissipation structure is also provided with a first support column and a second support column, the first support column being located in the first cavity and the second support column being located in the second cavity; The first substrate is provided with a first mounting hole, and the second substrate is provided with a second mounting hole. The first support post is connected to the first mounting hole to support the first substrate, and the second support post is connected to the second mounting hole to support the second substrate.

6. The electrical control box as described in claim 5, characterized in that, The first support column is also provided with a first positioning protrusion, and the first substrate is also provided with a first positioning hole corresponding to the first positioning protrusion; And / or, the second support column is further provided with a second positioning protrusion, and the second substrate is further provided with a second positioning hole corresponding to the second positioning protrusion.

7. The electrical control box as described in claim 3, characterized in that, The insulating base includes a base body and a limiting part and a snap-fit ​​part respectively connected to the base body. The power terminal passes through the base body. The limiting part protrudes from the outer wall surface of the base body. The snap-fit ​​part and the limiting part are spaced apart along the depth direction of the first opening. The heat dissipation structure also has a groove recessed in the inner wall of the first opening, wherein the limiting part abuts against the end face of the connection to the first opening, the snap-fit ​​part snaps into the groove, and the limiting part and the snap-fit ​​part cooperate to clamp the heat dissipation structure.

8. The electrical control box as described in claim 7, characterized in that, A guide protrusion is provided on one of the outer wall surface of the seat and the inner wall surface of the first opening, and a guide groove is provided on the other of the outer wall surface of the seat and the inner wall surface of the first opening. The guide groove extends along the insertion direction of the insulating seat, and the guide protrusion is inserted into the guide groove.

9. The electrical control box as described in any one of claims 2 to 8, characterized in that, It also includes a third circuit module, a third cover, and electrical connection wires; The third cover and the heat dissipation structure cooperate to form a third cavity. The third circuit module is disposed in the third cavity. The electrical connection line extends from the first cavity to the third cavity to electrically connect the third circuit module and the first circuit module.

10. The electrical control box as described in claim 9, characterized in that, The first circuit module is a driver board, and the second circuit module is a filter board; two driver boards are laid flat in the first cavity, and two power connection structures are provided; The two power connection structures are respectively disposed on the side of the two drive boards that are close to each other, and the two drive boards are electrically connected to the filter board through a corresponding power connection structure.

11. The electrical control box as described in claim 10, characterized in that, The two drive boards are arranged symmetrically at the center; And / or, the two electrical connection structures are arranged symmetrically at the center.

12. The electrical control box as described in claim 10, characterized in that, It also includes a cable bridge, which is disposed in the first cavity and has a first cable routing channel and a second cable routing channel that are relatively independently configured. The electrical connection cable includes a power supply cable and a signal cable, wherein the portion of the power supply cable located within the first cavity is arranged in the first wiring channel, and the portion of the signal cable located within the first cavity is arranged in the second wiring channel.

13. The electrical control box as described in claim 12, characterized in that, The third circuit module includes a main control power board and a main control board that are electrically connected. The main control board is located on the side of the main control power board facing the third cover. The power supply line is connected to the main control power board, and the signal line is connected to the main control board.

14. The electrical control box as described in claim 13, characterized in that, The cable bridge includes a first bracket and a second bracket; The first bracket has a first wiring channel formed inside it. The first bracket spans the side of the drive board facing away from the second cavity, which is close to the third circuit module. The first bracket extends from the location of the corresponding power connection structure on the drive board toward the third circuit module. The second bracket has a second wiring channel formed inside it, and the second bracket extends along the gap between the edge of the drive plate and the heat dissipation structure and the gap between the two drive plates.

15. The electrical control box as described in claim 14, characterized in that, The first bracket is connected to the second bracket, and the second bracket is also provided with an elastic buckle for engaging with the drive board.

16. The electrical control box as described in claim 9, characterized in that, The heat dissipation structure is further provided with a second opening, which connects the first cavity and the second cavity and is located on the side of the second cavity near the third cavity; The first circuit module is a driver board, the second circuit module is a filter board, and the third circuit module includes a main control power board and a main control board that are electrically connected. The electrical connection lines include power supply lines and signal lines. The power supply line enters the first cavity through the second opening and then extends into the third cavity to electrically connect the main control power board and the filter board. The signal line extends from the first cavity into the third cavity to electrically connect the main control board and the driver board.

17. The electrical control box as described in claim 9, characterized in that, It also includes the first seal; The heat dissipation structure also has a first wire through hole, a connecting groove and a second wire through hole connected in sequence, the first wire through hole being connected to the first cavity and the second wire through hole being connected to the third cavity; A first sealing element is disposed in the connecting groove, and a wire passage is provided on the first sealing element to connect the first wire passage hole and the second wire passage hole, and the electrical connection wire passes through the wire passage.

18. The electrical control box according to claim 17, characterized in that, The first sealing element includes a connecting seat and a sealing part connected together; The connecting groove includes a connecting groove and a mounting groove that are connected to each other. The two ends of the connecting groove are open and respectively connected to the first wire through hole and the second wire through hole. The connecting seat is accommodated in the mounting groove and connected to the heat dissipation structure. The blocking part is housed within the connecting groove, and the wire passage is formed on the blocking part.

19. The electrical control box according to claim 18, characterized in that, It also includes a first sealing strip, which is disposed on the connecting seat and surrounds the sealing part, and the first sealing strip seals against the groove wall of the mounting groove; And / or, it also includes a second sealing strip, which is disposed on the sealing portion, surrounds the sealing portion, and seals against the wall of the communicating groove.

20. The electrical control box according to claim 19, characterized in that, There are two second sealing strips. One second sealing strip is arranged around the first wire hole and seals against the wall of the connecting groove. The other second sealing strip is arranged around the second wire hole and seals against the wall of the connecting groove.

21. The electrical control box as described in claim 9, characterized in that, It also includes a power connector for connecting an external power supply, wherein the first circuit module is a driver board and the second circuit module is a filter board; The power connector is mounted on the heat dissipation structure. The power connector is located on the side of the drive board away from the third circuit module, and a portion of the power connector extends into the second cavity and is electrically connected to the filter board.

22. The electrical control box as described in claim 21, characterized in that, The heat dissipation structure is provided with an installation port that connects to the second cavity. The installation port is located on the side of the first cavity away from the third cavity. The power terminal is installed at the installation port and is partially exposed on the side of the heat dissipation structure facing away from the second cavity.

23. The electrical control box as described in claim 22, characterized in that, The projections of the first cavity and the second cavity along the thickness direction of the main box overlap. The first cavity has a first edge disposed away from the third cavity, and the second cavity has a second edge disposed away from the third cavity. The first edge is disposed closer to the third cavity than the second edge. The mounting port is located between the second edge and the first edge.

24. The electrical control box as described in claim 22, characterized in that, The power connector includes an insulating base and a conductive post. The insulating base is connected to the heat dissipation structure and seals the mounting port. The conductive post passes through the insulating base, and one end of the conductive post extends into the second cavity and is connected to the filter plate. The other end of the conductive post is exposed on the surface of the insulating base away from the second cavity.

25. The electrical control box as described in claim 24, characterized in that, The insulating base includes an insulating body and a connecting flange protruding from the outer wall of the insulating body. The insulating body extends into the second cavity, and the conductive post passes through the insulating body. The heat dissipation structure has a limiting groove surrounding the mounting port on one side of the second cavity, and the connecting flange is embedded in the limiting groove and connected to the heat dissipation structure.

26. The electrical control box as described in claim 21, characterized in that, It also includes a terminal block protective shell, which is connected to the heat dissipation structure and located on the side of the first cavity away from the third cavity; The terminal block protective shell is provided with a protective cavity and a clearance opening communicating with the protective cavity. The part of the power terminal block exposed outside the main box extends into the protective cavity through the clearance opening.

27. The electrical control box as described in claim 26, characterized in that, The bottom of the terminal block protective housing is provided with a power cord outlet.

28. The electrical control box as described in any one of claims 10 to 27, characterized in that, The heat dissipation structure includes an integrally formed cold plate body, a first enclosure plate, and a second enclosure plate. The cold plate body is plate-shaped and has heat dissipation channels. The first enclosure and the second enclosure are connected to the same side of the cold plate body. The first box cover is sealed to the side of the first enclosure away from the cold plate body to form the first cavity. The third box cover is sealed to the side of the second enclosure away from the cold plate body to form the third cavity.

29. The electrical control box as described in claim 28, characterized in that, It also includes a third enclosure, which is connected to the side of the cold plate body away from the first enclosure, and the second box cover is sealed to the side of the third enclosure away from the cold plate body to form the second cavity; Alternatively, the second lid can be sealed to the side of the cold plate body facing away from the first enclosure to form the second cavity.

30. The electrical control box as described in claim 28, characterized in that, It also includes a central module, a central housing, and a central communication line. The central housing is set independently from the main housing, and the central module is located inside the central housing. The third circuit module is the main control module, and the central module is electrically connected to the main control module through the central communication line.

31. The electrical control box as described in claim 30, characterized in that, The first enclosure and the second enclosure are arranged at intervals in the vertical direction. The first enclosure, the second enclosure, and the cold plate body cooperate to define a cable channel. The central communication line enters the third cavity through the cable channel to be electrically connected to the main control module.

32. The electrical control box as described in claim 31, characterized in that, The wire-passing groove extends through the opposite sides of the main box along its extension direction to form a first wire-passing opening and a second wire-passing opening; The main control module includes a central interface and a peripheral interface. The central interface is located closer to the second cable port than the peripheral interface. The peripheral communication line of the external device enters the cable slot through the first cable port and is electrically connected to the peripheral interface. The central communication line enters the cable slot through the second cable port and is electrically connected to the central interface.

33. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, It includes a housing and an electrical control box as described in any one of claims 1 to 32, wherein the electrical control box is disposed within the housing.

34. The HVAC equipment as described in claim 33, characterized in that, The housing is provided with an inspection port; the electrical control box is located at the inspection port, wherein the first cavity is disposed facing the inspection port.

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