Electric control box and heating device

Abstract

The application provides an electric control box and a heating and ventilation device, comprising a main box body and a power module, the main box body comprises a heat dissipation structure, a first box cover and a second box cover, the heat dissipation structure comprises a first side and a second side arranged oppositely, the first box cover is arranged on the first side and cooperates with the heat dissipation structure to form a first cavity, and the second box cover is arranged on the second side and cooperates with the heat dissipation structure to form a second cavity; the power module comprises a first module and a second module electrically connected, the first module is arranged in the first cavity, and the second module is arranged in the second cavity; the first cavity is defined as a first projection falling on the orthographic projection of the heat dissipation structure in the direction towards the second cavity, the second cavity is defined as a second projection falling on the orthographic projection of the heat dissipation structure in the direction towards the first cavity, and the first projection and the second projection have mutually staggered parts. The embodiment can improve the heat dissipation problem of the power module in the electric control box.

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] In related technologies, stacking multiple power modules that generate a lot of heat can easily lead to heat accumulation and poor heat dissipation. This localized overheating phenomenon can cause the temperature of the power modules to rise rapidly, affecting the stability and lifespan of the control box. Utility Model Content

[0004] This application provides an electrical control box and HVAC equipment, which aims to improve the heat dissipation problem of the power module inside the electrical control box.

[0005] On one hand, embodiments of this application provide an electronic control box, including:

[0006] The main box includes a heat dissipation structure, a first box cover, and a second box cover. The heat dissipation structure includes a first side and a second side arranged opposite to each other. The first box cover is disposed on the first side and cooperates with the heat dissipation structure to form a first cavity. The second box cover is disposed on the second side and cooperates with the heat dissipation structure to form a second cavity.

[0007] A power module includes a first module and a second module that are electrically connected, the first module being disposed in the first cavity and the second module being disposed in the second cavity;

[0008] The first projection is defined as the orthographic projection of the first cavity onto the heat dissipation structure along the direction toward the second cavity, and the second projection is defined as the orthographic projection of the second cavity onto the heat dissipation structure along the direction toward the first cavity, wherein the first projection and the second projection have mutually offset portions.

[0009] In some embodiments, the main box body has a length direction, along which the first projection and the second projection both have overlapping areas.

[0010] The first projection also has a first offset region, and the second projection also has a second offset region, with the first offset region and the second offset region located on opposite sides of the overlapping region along the length direction.

[0011] In some embodiments, the main housing further includes a third cover, which is disposed on the heat dissipation structure and cooperates with the heat dissipation structure to form a third cavity;

[0012] The power module further includes a third module electrically connected to the first module, and the third module is disposed in the third cavity;

[0013] Wherein, the orthographic projection of the third cavity toward the plane where the first projection is located does not overlap with the first projection; and / or the orthographic projection of the third cavity toward the plane where the second projection is located does not overlap with the second projection.

[0014] In some embodiments, the third cavity satisfies at least one of the following conditions:

[0015] Along the length direction, the third cavity is located closer to the first offset region than the second offset region;

[0016] Both the third cavity and the first cavity are located on the first side;

[0017] The volume of the third cavity is smaller than the volume of the first cavity and smaller than the volume of the second cavity.

[0018] In some embodiments, the heat dissipation structure includes:

[0019] A cold plate body has heat dissipation channels for supplying heat exchange medium flow, and the cold plate body has a first surface on the first side; and

[0020] The first enclosure is connected to the first surface, and the heat dissipation channel is set in the area enclosed by the first enclosure;

[0021] The first box cover is placed on the first enclosure, and the cold plate body, the first enclosure, and the first box cover together form the first cavity.

[0022] In some embodiments, the cold plate body has a second surface on the second side, and the second cover abuts against the second surface and surrounds the cold plate body to form the second cavity; or

[0023] The cold plate body has a second surface on the second side, and the heat dissipation structure further includes a second enclosure plate connected to the second surface. The second cover is disposed on the second enclosure plate, and the cold plate body, the second enclosure plate, and the second cover together form the second cavity.

[0024] In some embodiments, the first cover has a first annular groove, and the electrical control box further includes:

[0025] A first sealing ring is disposed in the first annular groove, the bottom wall of the first annular groove being disposed opposite to the inner wall surface of the first enclosure plate, so that the first sealing ring is in sealing contact with the inner wall surface of the first enclosure plate.

[0026] In some embodiments, the first enclosure includes:

[0027] The enclosure portion, connected to the first surface and extending in a direction away from the second side; and

[0028] The flanged portion is connected to the end of the enclosure portion away from the first surface, is set at an angle to the enclosure portion, and extends in a direction away from the first cavity;

[0029] The first box lid includes:

[0030] First cover body;

[0031] The first flange edge is connected to the first cover body and is set at an angle to the first cover body, and a portion of the first flange edge is in contact with the flange portion;

[0032] Cover flange, connected to the first flange edge and extending toward the first surface; and

[0033] The second flange edge is connected to the end of the cover plate flange away from the first flange edge and is arranged opposite to the first flange edge. The second flange edge, the cover plate flange, and the first flange edge define the first annular groove.

[0034] In some embodiments, the second cover has a second annular groove, and the electrical control box further includes:

[0035] A second sealing ring is disposed in the second annular groove, wherein the bottom wall of the second annular groove is disposed opposite to the second surface, so that the second sealing ring and the second surface are in sealing contact.

[0036] In some embodiments, the second cover has a second annular groove, and the electrical control box further includes:

[0037] A second sealing ring is disposed in the second annular groove, wherein the bottom wall of the second annular groove is disposed opposite to the second surface, so that the second sealing ring and the second surface are in sealing contact.

[0038] In some embodiments, the second lid includes:

[0039] The second cover body; and

[0040] The third flange edge is connected to the second cover body and is set at an angle to the second cover body. The third flange edge is in contact with the second surface and has the second annular groove.

[0041] In some embodiments, the second lid further includes:

[0042] Multiple connecting lugs are arranged at intervals on the outer periphery of the third flange edge and are all connected to the third flange edge. The connecting lugs are fixedly connected to the cold plate body by fasteners.

[0043] In some of these embodiments, it also includes:

[0044] A protective shell, connected to the cold plate body, the protective shell having a protective cavity and a clearance opening communicating with the protective cavity, the protective cavity and the first cavity both being disposed on the first side; and

[0045] A power connector is installed on the cold plate body. A part of the power connector extends into the second cavity and is connected to the second module. The other part of the power connector extends into the protective cavity through the clearance opening for connecting an external power cord.

[0046] The orthographic projection of the protective cavity toward the plane containing the second projection has a portion that is offset from the second projection.

[0047] In some embodiments, the cold plate body has a first mounting port, and the power terminal includes:

[0048] An insulating base is inserted through the first mounting opening, and the insulating base has a third annular groove that surrounds the first mounting opening.

[0049] A third sealing ring is disposed in the third annular groove and located in the second cavity. The bottom wall of the third annular groove is disposed opposite to the second surface so that the third sealing ring and the second surface make a sealing contact.

[0050] In some embodiments, the cold plate body includes:

[0051] Cold plate substrate; and

[0052] The flow channel portion is provided to protrude toward the first cavity relative to the cold plate substrate, so as to form the heat dissipation flow channel within the flow channel portion.

[0053] In some embodiments, the cold plate body further includes a boss, the flow channel portion passes through the boss and communicates with the boss, and the boss has a heat-conducting surface;

[0054] The first module and / or the second module includes at least one primary power element and at least one secondary power element, wherein the power of the primary power element is greater than the power of the secondary power element, and the primary power element is attached to the heat-conducting surface.

[0055] In some embodiments, a fan wiring section and a compressor wiring section are provided on at least one side of the wall on opposite sides of the first enclosure.

[0056] The electrical control box also includes:

[0057] A fan assembly includes a fan terminal block and a fourth sealing ring. The fan terminal block is inserted into the fan connection portion, and the fourth sealing ring is disposed between the fan terminal block and the fan connection portion to seal the gap between them.

[0058] The compressor assembly includes a compressor lead wire and a fifth sealing ring. The compressor lead wire is inserted into the compressor wiring portion, and the fifth sealing ring is disposed between the compressor lead wire and the compressor wiring portion to seal the gap between the compressor lead wire and the compressor wiring portion.

[0059] In some embodiments, the heat dissipation structure is a plate-like structure, the heat dissipation structure has a first surface on the first side, the first cover abuts against the first surface, and together with the heat dissipation structure, forms the first cavity;

[0060] The heat dissipation structure has a second surface on the second side, and the second cover abuts against the second surface and surrounds the heat dissipation structure to form the second cavity.

[0061] In some embodiments, the third module is the main control module, and a wire passage groove is provided between the first cavity and the third cavity. The communication line connected to the main control module extends into the third cavity through the wire passage groove. The wire passage groove extends through the opposite sides of the main box along its extension direction to form a first wire passage port and a second wire passage port.

[0062] The main control module has a peripheral interface and a central interface. The communication line includes a peripheral communication line and a central communication line. The peripheral communication line enters the cable tray through the first cable port and is electrically connected to the peripheral interface. The central communication line enters the cable tray through the second cable port and is electrically connected to the central interface.

[0063] On one hand, embodiments of this application provide a heating, ventilation, and air conditioning (HVAC) device, including a housing and an electrical control box as described in any of the above claims, wherein the electrical control box is disposed within the housing.

[0064] In some embodiments, the housing is provided with an access port; the electrical control box is located at the access port, wherein the opening of the first cavity faces the access port.

[0065] This embodiment effectively avoids the accumulation of heat in both the first and second cavities at the same location on the heat dissipation structure, dispersing the originally concentrated heat over a larger area. Specifically, the heat generated by the first module is mainly conducted to the heat dissipation structure through the first projection area, while the heat from the second module is mainly conducted through the second projection area. Due to the staggered projection areas, the heat dissipation structure exposes more surface area between the two cavities. This additional surface area can further participate in heat dissipation, thereby significantly improving the overall heat dissipation efficiency. This design not only reduces the possibility of localized overheating but also makes full use of the entire heat dissipation structure, improving its heat conduction efficiency, extending the service life of the control box, and enhancing its reliability.

[0066] The first module and the second module in the first cavity and the second cavity have different heat generation and heat dissipation requirements. By staggering the projection parts, heat can be conducted independently in some areas of the first cavity and the second cavity without interfering with each other.

[0067] Furthermore, in related technologies, to meet heat dissipation requirements, multiple power modules are laid flat within the heat dissipation structure. This results in a large size for the heat dissipation structure, which in turn increases the overall volume of the control box. In this embodiment, the projected portions of the first and second cavities are staggered, preventing complete overlap of the heat conduction areas of the two cavities on the heat dissipation structure. However, there is still some overlap. This overlap allows the first and second modules to be arranged more compactly within the control box while still meeting heat dissipation requirements, reducing the volume of the control box and making it more miniaturized. Attached Figure Description

[0068] 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 these drawings without creative effort.

[0069] Figure 1 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.

[0070] Figure 2 for Figure 1 A structural diagram from another angle of the structure;

[0071] Figure 3This 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);

[0072] Figure 4 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);

[0073] Figure 5 for Figure 3 A schematic diagram of the exploded structure of the electrical control box (the central control box is omitted);

[0074] Figure 6 for Figure 5 A structural diagram of the structure from another angle (the central box is omitted);

[0075] Figure 7 This is a cross-sectional schematic diagram of a portion of the structure of the electrical control box in this application;

[0076] Figure 8 This is a side view of a portion of the electrical control box structure of this application;

[0077] Figure 9 for Figure 8 A sectional view along section line AA;

[0078] Figure 10 for Figure 9 A magnified view of a section at point B in the middle;

[0079] Figure 11 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;

[0080] Figure 12 for Figure 11 A schematic diagram of the exploded structure in the image;

[0081] Figure 13 This is a schematic diagram of a heat dissipation structure according to an embodiment of this application;

[0082] Figure 14 This is a three-dimensional structural diagram of the second side of the driver board according to an embodiment of this application;

[0083] Figure 15 This is a three-dimensional structural diagram of the first side of the driver board according to an embodiment of this application;

[0084] Figure 16 This is a schematic diagram of the structure of an electrical control box according to another embodiment of this application (the central housing is omitted);

[0085] Figure 17 for Figure 16 A structural diagram of the structure from another angle (the second lid is omitted).

[0086] Explanation of reference numerals in the attached figures:

[0087] 100. Electrical control box; 10. Main box body; 10a1. First cavity; 10a2. Second cavity; 10b. Third cavity; 10c. Wiring groove; 10c1. First wiring port; 10c2. Second wiring port; 11. Heat dissipation structure; 11a. First side; 11b. Second side; 111. Cold plate body; 111a. First surface; 111b. Second surface; 111c. Mounting port; 1111. Cold plate substrate; 1112. Flow channel; 1113. Boss; 1113 a. Heat-conducting surface; 112. First enclosure plate; 113. Third enclosure plate; 1121. Enclosure plate portion; 1122. Flanged portion; 121. First lid; 121a. First annular groove; 1211. First lid body; 1212. Lid flange; 1213. First flange edge; 1214. Second flange edge; 122. Second lid; 122a. Second annular groove; 1221. Second lid body; 1222. Third flange edge; 1223. Connecting lug; 1223a. First thread Hole; 123, Third box cover; 21, First module; 211, Driver board; 2121, Fan drive chip; 2122, Compressor drive chip; 2131, Fan drive module; 2132, Compressor drive module; 2151, Film capacitor; 2152, Electrolytic capacitor; 22, Second module; 221, Filter board; 222, Common mode inductor; 30, Third module; 31, Main control board; 32, Main control power board; 60, Central housing; 70, Power terminal block; 70a. Third annular groove; 71, insulating base; 72, conductive post; 91, fan wiring section; 92, compressor wiring section; 80, protective shell; 80a, protective cavity; 80b, clearance opening; 80c, power cord outlet; 81, first protective half-shell; 82, second protective half-shell; 97, first sealing ring; 971, sealing body; 972, sealing lip; 98, second sealing ring; 991, reactor; 992, third sealing ring; 993, fan wiring terminal; 994, compressor wire lead;

[0088] 2. Outdoor unit; 200. Housing; 200a. Inspection port; 210. Outer casing; 220. Chassis; 220a. Wiring port. Detailed Implementation

[0089] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0090] 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.

[0091] like Figure 1 and Figure 1 As shown, taking an air conditioning system as an example of HVAC equipment, the air conditioning system can be, for example, a multi-split system for a building, that is, multiple indoor units connected in parallel with one or more outdoor units 2, forming a refrigerant circuit to allow refrigerant to circulate. Figures 1, 2, and 3 show the outdoor unit 2 part of the air conditioning system, where the outdoor unit 2 has a casing 200, inside which are a compressor, switching valve, outdoor heat exchanger, outdoor expansion valve, and oil separator, etc., which are connected by refrigerant piping. In addition, the outdoor unit 2 also has an electrical control box 100 and a blower fan.

[0092] 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 with users and reducing the risk of electric shock and other safety accidents. The electrical control box 100 is the core control component of the HVAC equipment. Installed inside the housing 200, it facilitates maintenance and replacement, and also streamlines the installation and layout of the overall HVAC structure. The electrical control box 100 is responsible for the precise control of the HVAC equipment's operation. It contains various control circuits that use electronic components and wiring to control the HVAC equipment's start-up, stop, temperature adjustment, and mode switching.

[0093] The housing 200 provides protection for the electrical control box 100, preventing dust, moisture, oil, and other external impurities from entering. It protects the electrical control box 100 from extreme environmental conditions (such as temperature, humidity, and chemical corrosion), ensuring normal operation in various environments, extending the service life of the electrical control box 100, preventing accidental contact by users, reducing the risk of electric shock, and improving safety. Furthermore, the housing 200 also acts as a shield, reducing the impact of external electromagnetic interference on the electronic components inside the electrical control box 100, ensuring the stability and reliability of the control system.

[0094] In this embodiment, the housing 200 is rectangular, and 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.

[0095] 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.

[0096] like Figure 1 , Figure 1 and Figure 2 As shown, 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.

[0097] like Figure 2 The figure shown is a three-dimensional structural diagram of an embodiment of the present application, in which the electrical control box 100 is located at the access port 200a of the outdoor unit 2. The electrical control box 100 is located at the access port 200a, and maintenance personnel can quickly access the electrical control box 100 without having to enter the casing 200 to operate the electrical control box 100, thereby greatly improving the efficiency of maintenance and repair.

[0098] The electrical control box 100 includes a main box 10 and a power module. The power module is the main body with control circuitry, and at least one power module implements control functions for the HVAC equipment through various electronic components and circuits, used to control the start-up, stop, temperature adjustment, mode switching, and other operations of the HVAC equipment. The main box 10 constructs at least one heat dissipation cavity for housing the power module, and provides protection for the power module through the main box 10.

[0099] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, the main housing 10 includes a heat dissipation structure 11, 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 heat dissipation structure 11 includes a first side 11a and a second side 11b arranged opposite to each other. In this embodiment, along the thickness direction of the heat dissipation structure 11, the heat dissipation structure 11 has two large front and rear surfaces, corresponding to the first side 11a and the second side 11b, respectively. The first cover 121 and the second cover 122 are both cover-like structures with an opening on one side. The first cover 121 is placed on the first side 11a and cooperates with the heat dissipation structure 11 to form a first cavity 10a1. The second cover 122 is placed on the second side 11b and cooperates with the heat dissipation structure 11 to form a second cavity 10a2. The first cover 121 and the second cover 122 are respectively placed on both sides of the heat dissipation structure 11, forming two independent cavities. Through the tight cooperation between the first cover 121 and the second cover 122 and the heat dissipation structure 11, external pollutants such as dust and moisture can be effectively prevented from entering the interior of the first cavity 10a1 and the second cavity 10a2.

[0100] The power module includes a first module 21 and a second module 22 electrically connected. The first module 21 is located in the first cavity 10a1, and the second module 22 is located in the second cavity 10a2. This structure is similar to a sandwich, with the heat dissipation structure 11 acting as the "filling," and the first module 21 and the second module 22 acting as the "slices," together forming a compact and efficient heat dissipation system. Furthermore, the heat dissipation structure 11 serves 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 module 21 and the second 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 module 21 and the second module 22 remain stable under high load operation.

[0101] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, 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 control box 100 is located in the air duct, the airflow in the air duct can quickly flow through the outer wall of the control box 100, thereby fully exchanging heat and releasing the heat generated by the control box 100 more quickly. The first box cover 121 and the second box 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 module 21 and the second module 22 may be different. By placing them in independent cavities, customized design can be carried out according to the specific heat dissipation requirements of the first module 21 and the second module 22. It also effectively avoids heat cross-interference between the first module 21 and the second module 22, ensuring that the first module 21 and the second module 22 each have a better matching heat dissipation setting, and improving the heat dissipation efficiency of the entire control box 100.

[0102] In this embodiment, the thickness directions of the first module 21 and the second module 22 are both aligned with the thickness direction of the main box 10. Understandably, the first module 21 and the second module 22 will generate heat during operation. At least one side of the first module 21 and the second module 22 faces the heat dissipation structure 11. Since the thickness directions of the first module 21 and the second module 22 are consistent with the thickness direction of the main box 10, the side facing the heat dissipation structure 11 is usually the larger side of the first module 21 and the second 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 functions of the heat dissipation structure 11, the heat generated by the first module 21 and the second module 22 can be quickly removed, maintaining the internal temperature of the control box 100 within a reasonable range. The sides of the first module 21 and the second module 22 that face away from the heat dissipation structure 11 face the first box cover 121 and the second box 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.

[0103] like Figure 7As shown, the orthographic projection of the first cavity 10a1 onto the heat dissipation structure 11 along the direction toward the second cavity 10a2 is defined as the first projection, and the orthographic projection of the second cavity 10a2 onto the heat dissipation structure 11 along the direction toward the first cavity 10a1 is defined as the second projection. In this embodiment, it can be understood that the first projection is the orthographic projection of the first cavity 10a1 along the thickness direction, and the second projection is the orthographic projection of the second cavity 10a2 along the thickness direction. The first projection and the second projection have a portion offset from each other. That is, the first projection is offset relative to the second projection, and the second projection is also offset relative to the first projection. In this embodiment, the specific position of the offset is not limited. It can be offset in the horizontal direction, offset in the vertical direction, or offset obliquely. The degree of offset can be specifically set according to factors such as heat dissipation requirements and space utilization.

[0104] This embodiment effectively avoids the accumulation of heat in both the first cavity 10a1 and the second cavity 10a2 at the same location on the heat dissipation structure 11, dispersing the originally concentrated heat over a larger area. Specifically, the heat generated by the first module 21 is mainly conducted to the heat dissipation structure 11 through the first projection area, while the heat from the second module 22 is mainly conducted through the second projection area. Due to the staggered projection areas, the heat dissipation structure 11 exposes more surface area between the two cavities. This additional surface area can further participate in heat dissipation, thereby significantly improving the overall heat dissipation efficiency. This design not only reduces the possibility of local overheating but also makes full use of the entire heat dissipation structure 11, improving its heat conduction efficiency, extending the service life of the control box 100, and enhancing the reliability of the control box 100.

[0105] Furthermore, the first module 21 and the second module 22 in the first cavity 10a1 and the second cavity 10a2 have different heat generation and heat dissipation requirements. By staggering the projection parts, heat can be conducted independently in some areas of the first cavity 10a1 and the second cavity 10a2 without interfering with each other.

[0106] In related technologies, multiple power modules are laid flat inside the heat dissipation structure to meet heat dissipation requirements. This results in a large size of the heat dissipation structure, which in turn increases the size of the entire control box.

[0107] This embodiment alters the heat distribution pattern on the heat dissipation structure 11 by staggering the projected portions of the first cavity 10a1 and the second cavity 10a2. Heat is no longer concentrated in a single small area, reducing the possibility of localized overheating. However, the overlapping portions are retained. This staggered yet partially overlapping design allows the first module 21 and the second module 22 to meet their respective heat dissipation needs while being arranged more compactly within the control box 100. This layout reduces unnecessary empty space inside the control box 100, ultimately reducing its size and achieving a more miniaturized design.

[0108] In some embodiments, the main housing 10 has a length direction. When the electrical control box 100 is installed inside the housing 200, its length direction is set 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. It is also beneficial for heat dissipation and maintenance operations.

[0109] like Figure 7 As shown, along the length direction, both the first projection and the second projection have overlapping areas. The first projection also has a first staggered area, and the second projection has a second staggered area. The first and second staggered areas are located on opposite sides of the overlapping area along the length direction. That is, within a certain length range of the main housing 10, the first cavity 10a1 and the second cavity 10a2 partially overlap. When the electrical control box 100 is vertically arranged in the housing 200, from top to bottom, the areas are: the first staggered area, the overlapping area, and the second staggered area. The staggered area design can effectively reduce heat cross-interference between the first module 21 and the second module 22. Because the projected portions of the first cavity 10a1 and the second cavity 10a2 are staggered, heat interference is reduced during conduction, thereby improving the uniformity and efficiency of heat dissipation.

[0110] like Figure 5 , Figure 6 and Figure 7As shown, in some embodiments, the main housing 10 further includes a third cover 123. The third cover 123 covers the heat dissipation structure 11 and cooperates with the heat dissipation structure 11 to form a third cavity 10b. The third cover 123 can prevent external factors such as dust and moisture from affecting the internal components of the third cavity 10b, thereby improving the reliability and service life of the control box 100. The power module also includes a third module 30 electrically connected to the first module 21. The third module 30 is disposed in the third cavity 10b. The third module 30 can be an independent control unit or functional module, working in conjunction with the first module 21 and the second module 22. By setting the third cavity 10b and the third module 30, the control box 100 achieves a modular arrangement of 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.

[0111] Specifically, the orthographic projection of the third cavity 10b onto the plane containing the first projection does not overlap with the first projection; and / or the orthographic projection of the third cavity 10b onto the plane containing the second projection does not overlap with the second projection. In other words, in the thickness direction, the projection of the third cavity 10b will not overlap with the projection of the first cavity 10a1, and the heat generated by the third module 30 will not directly superimpose on the heat already generated by the first module 21, especially at the same location in the heat dissipation structure 11. Similarly, this non-overlapping design also prevents the projection of the third cavity 10b from overlapping with the second projection, thus avoiding the superposition of heat from the third module 30 and the second module 22 at the same location in the heat dissipation structure 11, thereby helping the heat dissipation structure 11 to dissipate heat more evenly and improving the overall heat dissipation efficiency.

[0112] like Figure 5 and Figure 6 As shown, in some embodiments, the third cavity 10b satisfies at least one of the following conditions:

[0113] Along its length, the third cavity 10b is positioned closer to the first offset region than the second offset region. In other words, the third cavity 10b is positioned closer to the first cavity 10a1, making full use of the space inside the main housing 10. Especially along the length of the main housing 10, this reduces wasted space and makes the control box 100 more compact. Furthermore, since the third module 30 and the first module 21 are closely connected in circuitry, this layout shortens their connection distance, reduces signal transmission delay and loss, and improves reliability.

[0114] Both the third cavity 10b and the first cavity 10a1 are located on the first side 11a, which simplifies the assembly and maintenance process of the electrical control box 100. If the first cavity 10a1 is set to face the access port 200a, then similarly, the third cavity 10b is also set to face the access port 200a, making it convenient for maintenance personnel to access the first cavity 10a1 and the third cavity 10b for inspection and replacement of parts.

[0115] The volume of the third cavity 10b is smaller than that of the first cavity 10a1 and smaller than that of the second cavity 10a2. In other words, the first module 21 and the second module 22, as the main power modules, require more space to arrange the components, while the third module 30 is relatively small. Reducing the volume of the third cavity 10b can allocate space more reasonably and meet the actual space requirements of different modules.

[0116] like Figure 2 , Figure 3 and Figure 5 Specifically, in this embodiment, the first module 21 includes at least one drive board 211. The drive board 211 is typically used to implement the main functions of the electrical control box 100, such as control and drive. The drive board 211 is located on the first side 11a of the heat dissipation structure 11 and is disposed in the first cavity 10a1. The second module 22 includes a filter board 221. The filter board 221 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. The filter board 221 is located on the second side 11b of the heat dissipation structure 11 and is disposed in the second cavity 10a2. Along the thickness direction, the heat dissipation structure 11 is provided with multiple electrical connection structures to electrically connect the drive board 211 and the filter board 221. Following the above, the driver board 211 is located on the side facing the access port 200a, while the filter board 221 is located on the side facing away from the access port 200a. The driver board 211 typically integrates multiple functional circuits; for example, the insulated-gate bipolar transistor (IGBT) commonly found in the driver board 211 is a device with a high failure rate. Due to the complexity and high failure rate of the driver board 211, it requires more frequent maintenance. Therefore, its location facing the access port 200a makes it easier for maintenance personnel to maintain. Compared to the driver board 211, the filter board 221 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 211 generates more heat than the filter board 221. Thus, when the filter board 221 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.

[0117] The third module 30 is the main control module, which includes a main control board 31 and a main control power board 32 that are electrically connected. The main control power board 32 is responsible for providing a stable power supply to the main control board 31. 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, processing and transmitting control signals, and achieving precise control of other components.

[0118] 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.

[0119] like Figure 2 As 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.

[0120] like Figure 5 , Figure 6 and Figure 7As shown, in some embodiments, the heat dissipation structure 11 includes a cold plate body 111 and a first enclosure plate 112. 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 cold plate body 111 also has heat dissipation channels for the flow of heat exchange medium. Understandably, coolant or air can flow through the heat dissipation channels to remove heat. The design of the heat dissipation channels effectively absorbs the heat generated by electronic components and conducts and dissipates it through the channels. Both surfaces of the cold plate body 111 are utilized to receive heat, maintaining the internal temperature of the electronic control box 100 within a reasonable range.

[0121] Furthermore, the cold plate body 111 has a first surface 111a on the first side 11a, and the first enclosure plate 112 is connected to the first surface 111a. The first enclosure plate 112 can extend away from the second side 11b along the thickness direction. The heat dissipation channel is set in the area enclosed by the first enclosure plate 112. That is to say, the part of the cold plate body 111 that is configured as the third cavity 10b does not have a heat dissipation channel. Since the heat generation of the third module 30 (main control board 31 and main control power board 32) is lower than that of the first module 21 (drive board 211) and the second module 22 (filter board 221), in this embodiment, the heat dissipation of the first module 21 and the second module 22 can be achieved through the heat exchange of the heat exchanger flowing in the heat dissipation channel and the radiative heat dissipation of the cold plate body 111. The heat dissipation channel transfers cold energy to the cold plate body 111, corresponding to the area of ​​the third cavity 10b, to radiate heat dissipation for the third module 30. Moreover, the radiative heat dissipation through the cold plate body 111 can, to some extent, prevent condensation from forming on the surface of the third module 30.

[0122] like Figure 5 , Figure 6 and Figure 7As shown, the first cover 121 is placed on the first enclosure 112. The cold plate body 111, the first enclosure 112, and the first cover 121 together form the first cavity 10a1. The cold plate body 111 and the first enclosure 112 can be integrally formed by die casting, reducing assembly steps and improving production efficiency. The first module 21 is spaced apart from the first surface 111a, not exceeding the end face of the first enclosure 112 furthest from the first surface 111a, and the first module 21 is spaced apart from the inner wall of the first enclosure 112 in the circumferential direction. In practical applications, when the first module 21 generates heat, the temperature inside the first cavity 10a1 will rise. At this time, a cooling medium (such as coolant or cooling air) is introduced into the heat dissipation channel, and the temperature of the cold plate body 111 and the first enclosure 112 will decrease. Due to the temperature difference, water droplets may condense on the first surface 111a, the inner wall of the first cover 121, and the inner wall of the first enclosure 112. If the first module 21 is attached to the cold plate body 111, the first enclosure 112, or the first cover 121, these water droplets may penetrate into the interior of the first module 21, causing a short circuit or other electrical faults.

[0123] In one configuration, the cold plate body 111 has a second surface 111b on the second side 11b, and the second cover 122 abuts against the second surface 111b and surrounds the cold plate body 111 to form a second cavity 10a2. That is, the second cover 122 directly seals the side of the cold plate body 111 facing away from the first enclosure 112, without the need for an additional enclosure. This makes the process simpler, improves production efficiency, and reduces manufacturing costs.

[0124] In another configuration, the cold plate body 111 has a second surface 111b on the second side 11b. Understandably, the first surface 111a and the second surface 111b are arranged opposite to each other along the thickness direction of the cold plate body 111. The heat dissipation structure 11 also includes a second enclosure plate, which is integrally formed with the cold plate body 111. The second enclosure plate is connected to the second surface 111b and extends in a direction away from the first side 11a, 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 modules and external mechanical pressure. A second cover 122 is placed on the second enclosure plate. The cold plate body 111, the second enclosure plate, and the second cover 122 together form a second cavity 10a2, which better seals the second cavity 10a2, preventing dust, moisture, and other external impurities from entering and improving the protection level of the electrical control box 100.

[0125] Similarly, the second module 22 is spaced apart from the second surface 111b and spaced apart from the inner wall of the second cover 122. If a second enclosure is provided, the second module 22 is spaced apart from the inner wall of the second enclosure in the circumferential direction to reduce the contact of water droplets condensed on the second surface 111b, the second cover 122, or the second enclosure with the second module 22.

[0126] like Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the heat dissipation structure 11 further includes a third enclosure 113 integrally formed with the cold plate body 111. The third enclosure 113 is disposed on the same side of the first enclosure 112. The integrated heat dissipation structure 11 can enhance the overall strength and durability and reduce damage caused by vibration or impact. The third cover 123 is covered on the third enclosure 113. The third cover 123, the third enclosure 113 and the cold plate body 111 surround to form a third cavity 10b.

[0127] like Figure 8 , Figure 9 and Figure 10 As shown, to improve the sealing effect between the first cover 121 and the first enclosure 112, in some embodiments, the first cover 121 has a first annular groove 121a, and the electrical control box 100 also includes a first sealing ring 97 disposed in the first annular groove 121a. The bottom wall of the first annular groove 121a is disposed opposite to the inner wall surface of the first enclosure 112. The inner wall surface of the first enclosure 112 refers to the wall surface perpendicular to the first surface 111a. That is to say, the first sealing ring 97 can be fitted onto the first cover 121 so that the first sealing ring 97 does not fall out of the preset position. When the first cover 121 is installed on the first enclosure 112, the first sealing ring 97 is pressed against the inner wall surface of the first enclosure 112 to achieve a radial sealing effect, so that the first sealing ring 97 and the inner wall surface of the first enclosure 112 are sealed and abutted, forming a good sealing effect, and further improving the overall sealing performance of the first cavity 10a1. Understandably, the first sealing ring 97 is formed to match the shape of the first enclosure 112. For example, when the first enclosure 112 is roughly square, the first sealing ring 97 is set as a square sealing ring so that the first sealing ring 97 fits more closely to the inner wall surface of the first enclosure 112.

[0128] like Figure 8 , Figure 9 and Figure 10As shown, specifically, the first enclosure 112 includes an enclosure portion 1121 and a flange portion 1122. The enclosure portion 1121 is connected to the first surface 111a and extends in a direction away from the second side 11b, that is, the enclosure portion 1121 extends along the thickness direction. The flange portion 1122 is connected to the end of the enclosure portion 1121 away from the first surface 111a, and is set at an angle to the enclosure portion 1121. This angle can be approximately 90°, and it extends in a direction away from the first cavity 10a1, that is, it extends outward to form a flange. The first lid 121 includes a first lid body 1211, a first flange edge 1213, a lid flange 1212, and a second flange edge 1214. The first lid body 1211 is the main body of the first lid 121, and the first flange edge 1213 is connected to the first lid body 1211 and is perpendicular to the first lid body 1214. 1. The first flange edge 1213 extends away from the first cavity 10a1 at an angle. A portion of the first flange edge 1213 fits against the flange portion 1122. The cover flange 1212 is connected to the first flange edge 1213 and extends towards the first surface 111a. The cover flange 1212 is located inside the area enclosed by the first enclosure plate 112 and is set approximately parallel to the first enclosure plate 112. The cover flange 1212 provides good support and positioning for the first sealing ring 97, facilitating quick installation. The end of the cover flange 1212 away from the first flange edge 1213 is connected to the second flange edge 1214. The second flange edge 1214 is set opposite to the first flange edge 1213 along the thickness direction. The second flange edge 1214, the cover flange 1212, and the first flange edge 1213 define the first annular groove 121a. Understandably, the first flange edge 1213 and the second flange edge 1214 can restrict the displacement of the first sealing ring 97 in the thickness direction, i.e., the front-to-back direction.

[0129] like Figure 8 , Figure 9 and Figure 10As shown, in some embodiments, the first sealing ring 97 is made of an elastic material, such as a rubber or silicone component. The first sealing ring 97 includes a sealing body 971 and a sealing lip 972. The sealing body 971 is mounted on the cover flange 1212. The sealing body 971 provides stable support for the first sealing ring 97, ensuring that the first sealing ring 97 maintains 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 inner wall of the first enclosure 112. The sealing lip 972 can be provided in multiple rings, and the multiple rings of sealing lips 972 are arranged along the thickness direction on the sealing body 971. The sealing lip 972 abuts against the inner wall of the first enclosure 112. The design of the sealing lip 972 can closely fit the inner circumferential surface of the first enclosure 112, sealing the gap between the enclosure part 1121 and the cover flange 1212, forming a more effective sealing barrier to 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.

[0130] Furthermore, the sealing lip 972 extends obliquely from the sealing body 971 toward the side where the first 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 side of the first 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 side of 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 direction of the cold plate body 111. Therefore, obliquely inclining the sealing lip 972 toward the side of the first 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.

[0131] To improve the sealing effect between the second cover 122 and the second surface 111b, the second cover 122 has a second annular groove 122a. The electrical control box 100 also includes a second sealing element, which is disposed in the second annular groove 122a. Part of the sealing element can be embedded in the second annular groove 122a. The bottom wall of the second annular groove 122a is disposed opposite to the second surface 111b so that the second sealing element and the second surface 111b are sealed and abutted, effectively preventing external dust, moisture and other impurities from entering the second cavity 10a2.

[0132] like Figure 8 , Figure 9 and Figure 10As shown, specifically, the second cover 122 includes a second cover body 1221 and a third flange edge 1222. The second cover body 1221 is the main body of the second cover 122. The third flange edge 1222 is connected to the second cover body 1221 and is set at an angle to the second cover body 1221. The third flange edge 1222 extends in a direction away from the second cavity 10a2. The third flange edge 1222 provides a larger contact area so that the second cover 122 can be supported on the second surface 111b, and can also increase the stability of the second cover 122. The third flange edge 1222 fits against the second surface 111b to form a sealing contact surface, which can further enhance the sealing performance of the second cavity 10a2. The third flange edge 1222 has a second annular groove 122a for installing the aforementioned second sealing ring 98. The third flange edge 1222 is pressed against the second surface 111b to improve the sealing effect of the second sealing ring 98.

[0133] like Figure 5 and Figure 6 As shown, the second cover 122 further includes a plurality of connecting ears 1223, each connecting ear having a first threaded hole 1223a. The plurality of connecting ears 1223 are spaced apart on the outer periphery of the third flange edge 1222 and are all connected to the third flange edge 1222. The cold plate body 111 has a second threaded hole opposite to the first threaded hole 1223a. The connecting ears 1223 are fixedly connected to the cold plate body 111 by fasteners. Understandably, the fasteners can be screws, which pass through the first threaded hole 1223a and the second threaded hole, so that the second cover 122 is tightly connected to the cold plate body 111, thereby improving the sealing performance of the second cavity 10a2.

[0134] It should be noted that the specific settings of the first lid 121 can also be adjusted to the relevant settings of the second lid 122, or the specific settings of the second lid 122 can also be adjusted to the relevant settings of the first lid 121. This application does not impose any restrictions on this.

[0135] like Figure 3 , Figure 4 and Figure 5 In some embodiments, the electrical control box 100 further includes a protective shell 80 and a power terminal block 70. The protective shell 80 is connected to the cold plate body 111. The protective shell 80 has a protective cavity 80a. The protective cavity 80a and the first cavity 10a1 are both located on the first side 11a. In this embodiment, along the length direction of the main box body 10, the protective cavity 80a is located on the side of the first cavity 10a1 away from the third cavity 10b. That is, the third cavity 10b, the first cavity 10a1 and the protective cavity 80a are arranged sequentially along the length direction to achieve a compact arrangement. The protective cavity 80a is also set towards the inspection port 200a, which is convenient for maintenance personnel to maintain and inspect.

[0136] The power connector 70 is installed on the cold plate body 111. The power connector 70 is used to connect the external power cord to provide power to the control box 100. A part of the power connector 70 extends into the second cavity 10a2 and is connected to the second module 22 to provide power support for the normal operation of the second module 22. The protective shell 80 also has a clearance opening 80b that communicates with the protective cavity 80a. Another part of the power connector 70 extends into the protective cavity 80a through the clearance opening 80b. Since the power cord connection is located at the bottom of the main box 10 and the third module 30 (main control module) is located above, this vertical separation layout ensures that the high-voltage connection of the power cord will not cause signal interference to the third module 30 located above.

[0137] In this design, the orthographic projection of the protective cavity 80a onto the plane containing the second projection has a portion that is offset from the second projection. As mentioned above, the second projection and the first projection have an overlapping area and a second offset area that is offset from the overlapping area. The overlapping area does not overlap with the orthographic projection of the protective cavity 80a, while at least a portion of the second offset area can overlap with the protective cavity 80a. A portion of the power connector 70 extends into the second cavity 10a2 and is electrically connected to the second module 22 (filter board 221). This allows the power signal to first pass through the filter board 221 after the external power line is connected, for example, to remove high-frequency noise and suppress harmonics, before being transmitted to other circuit modules. This layout reduces the length of the power line within the control box 100, avoiding interference during power signal transmission. The power connector 70 provides a stable power input. Centralized management of the power lines through the power connector 70 makes the power line connections more standardized, reducing tangled power lines and improving the overall neatness of the control box 100.

[0138] like Figure 11 As shown, the protective shell 80 further includes a first protective half-shell 81 and a second protective half-shell 82 that are interlocked with each other. The second protective half-shell 82 has the aforementioned clearance opening 80b. The first protective half-shell 81 and the second protective half-shell 82 overlap each other along the thickness direction to define a protective cavity 80a and a power cord outlet 80c. The power cord outlet 80c is located at the bottom of the protective shell 80, that is, on the side opposite to the first cavity 10a1, so that the power cord can be directly led out from the power cord outlet 80c at the bottom of the protective shell 80, avoiding the messy arrangement of the power cord inside the protective shell 80 and making the wiring neater and more aesthetically pleasing.

[0139] like Figure 2 and Figure 11As shown, 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.

[0140] like Figure 7 and Figure 11 As shown, specifically, the cold plate body 111 has a first mounting opening 111c, which penetrates the cold plate body 111 along the thickness direction and connects to the second cavity 10a2. The power terminal block 70 includes an insulating base 71, a conductive post 72, and a third sealing ring 992. The insulating base 71 passes through the first mounting opening 111c to seal it. The main function of the insulating base 71 is to provide electrical insulation and 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, meaning that the insulating base 71 also serves to support and fix the conductive post 72, ensuring the stable installation of the conductive post 72. The conductive post 72 extends along the thickness direction of the main box 10, with one end extending into the second cavity 10a2 and connecting to the filter plate 221. The conductive post 72 is used to realize the electrical connection between the power cord and the internal circuit of the control box 100 (such as the filter plate 221).

[0141] like Figure 7 , Figure 11 and Figure 12 As shown, the insulating base 71 has a third annular groove 70a surrounding the first mounting opening 111c. A third sealing ring 992 is disposed in the third annular groove 70a and located in the second cavity 10a2. The bottom wall of the third annular groove 70a is disposed opposite to the second surface 111b. A portion of the third sealing ring 992 is embedded in the third annular groove 70a so that the third sealing ring 992 seals against the second surface 111b, 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.

[0142] like Figure 13As shown, in some embodiments, the cold plate body 111 includes a cold plate substrate 1111 and a flow channel portion 1112. The flow channel portion 1112 protrudes towards the first cavity 10a1 relative to the cold plate substrate 1111 to form a heat dissipation flow channel within the flow channel portion 1112. The cross-sectional area of ​​the heat dissipation flow channel along the flow direction of the heat exchange medium within the heat dissipation flow channel is the flow area of ​​the heat dissipation flow channel. The embodiments of this application do not limit the shape of the cross-section of the heat dissipation flow channel, and it can be selected according to actual needs. For example, the cross-sectional shape of the heat dissipation flow channel is circular, elliptical, etc.

[0143] It should be noted that, since the first side 11a of the cold plate body 111 has a relatively larger area not covered by the power components, it is easier to increase the outer surface area of ​​the flow channel 1112. The surface of the second side 11b of the cold plate body 111 is flat. The second module 22 also includes a common-mode inductor 222 and a reactance 991. The common-mode inductor 222 is used to filter out common electromagnetic interference modes in the circuit and suppress its own electromagnetic interference from being emitted externally, preventing it from affecting the normal operation of other electronic devices in the same environment. The reactance 991 is used to suppress high-order harmonics in the circuit and protect electronic devices from damage. The flat surface of the second side 11b of the cold plate body 111 allows for better fit with the common-mode inductor 222 and the reactance 991, improving the heat transfer rate and providing more stable support for the common-mode inductor 222 and the reactance 991.

[0144] like Figure 13 , Figure 14 and Figure 15 As shown, in some embodiments, the cold plate body 111 further includes a boss 1113, and a flow channel 1112 passes through and communicates with the boss 1113. The height of the boss 1113 in the thickness direction is greater than or equal to the height of the flow channel 1112. The boss 1113 has a heat-conducting surface 1113a, which can be the surface of the boss 1113, that is, the end face of the boss 1113 facing away from the cold plate substrate 1111. The first module 21 and / or the second module 22 include at least one primary power element and at least one secondary power element. Since different power elements generate different amounts of heat, their heat dissipation requirements are also different. In this application embodiment, different heat dissipation designs are carried out for power elements with different heat dissipation requirements. Specifically, multiple power elements are distinguished according to their power. The power of the primary power element is greater than that of the secondary power element. The primary power element is attached to the heat-conducting surface 1113a to improve heat transfer efficiency, while the secondary power element is spaced apart from the cold plate body 111.

[0145] Additionally, the height of the boss 1113 can be adjusted according to the height of the primary power component relative to the cold plate substrate. The boss 1113 provides support for the primary power component, improving its installation stability. For example, the primary power component may include a fan drive module 2131 and a compressor drive module 2132 disposed on the drive plate 211, while the secondary power component may include a fan drive chip 2121, a compressor drive chip 2122, a film capacitor 2151, and an electrolytic capacitor 2152 disposed on the drive plate 211.

[0146] like Figure 13 , Figure 14 and Figure 15 As shown, in some embodiments, a fan wiring section 91 and a compressor wiring section 92 are provided on at least one side of the wall on opposite sides of the first enclosure 112. 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. Since both the fan wiring section 91 and the compressor wiring section 92 need to be connected to the drive board 211 inside the first cavity 10a1, it is more convenient to connect the fan wiring section 91 and the compressor wiring section 92 to the filter board 221 by placing them on the opposite sides of the wall of the first enclosure 112.

[0147] In this embodiment, the fan wiring section 91 and the compressor wiring section are integrally formed with the first enclosure 112. The first enclosure 112 has left and right sides arranged opposite to each other in the left and right direction. The fan wiring section 91 and the compressor wiring section 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 section 91 and the compressor wiring section 92, and improves the overall space utilization of the electrical control box 100.

[0148] The electrical control box 100 also includes a fan assembly and a compressor assembly. The fan assembly includes a fan terminal block 993 and a fourth sealing ring. The fan terminal block 993 is inserted into the fan wiring section 91, and the fourth sealing ring is located between the fan terminal block 993 and the fan wiring section 91 to seal the gap between them. The compressor assembly includes a compressor cable connector 994 and a fifth sealing ring. The compressor cable connector 994 is inserted into the compressor wiring section 92, and the fifth sealing ring is located between the compressor cable connector 994 and the compressor wiring section 92 to seal the gap between them. This sealing design prevents external moisture, dust, impurities, etc., from entering the electrical control box 100, especially preventing them from entering the connection between the fan terminal block 993 and the compressor cable connector 994. This is crucial for maintaining the dryness and normal operation of the internal components of the electrical control box 100.

[0149] like Figure 3 , Figure 5 and Figure 13 As shown, in some embodiments, the third module 30 is the main control module. A wire channel 10c is provided between the first cavity 10a1 and the third cavity 10b. The wire channel 10c is connected to the outside. The communication line connected to the main control module extends into the third cavity 10b through the wire channel 10c. That is, the wire channel 10c provides a channel for the communication line to enter the third cavity 10b from the outside, so that the communication line can be successfully connected to the main control module, ensuring that the communication function between the main control module and the device outside the main box 10 is realized.

[0150] The cable tray 10c extends along its extension direction through opposite sides of the main housing 10 to form a first cable port 10c1 and a second cable port 10c2. The main control module has a peripheral interface and a central interface. Communication lines include peripheral communication lines and central communication lines. Peripheral communication lines may include engineering connection communication lines, etc. Engineering communication lines mainly include indoor unit communication lines, other outdoor unit 2 communication lines, etc. Peripheral communication lines enter the cable tray 10c through the first cable port 10c1 and are electrically connected to the peripheral interface. Central communication lines enter the cable tray 10c through the second cable port 10c2 and are electrically connected to the central interface. By concentrating the peripheral communication lines on one side of the main housing 10, such as the left side, and the central communication lines entering the cable tray 10c through the second cable port 10c2 and being electrically connected to the central interface, the central communication lines (usually used for communication between internal modules) are concentrated on the other side, such as the right side. This allows users to more intuitively identify and distinguish the wiring areas for different functions. This clear partitioning reduces user confusion and the possibility of incorrect operation during wiring. When installing or maintaining the equipment, users only need to focus on the external communication cable interface on one side, eliminating the need to search for the correct interface in a complex wiring environment. This simplified design makes the wiring process more efficient, reduces operation time and difficulty, and clearly distinguishes between the user-operated area and the internal maintenance area.

[0151] 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.

[0152] like Figure 3 , Figure 5 and Figure 13As shown, 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.

[0153] 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.

[0154] 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.

[0155] like Figure 16 and Figure 17 As shown, in other embodiments, the heat dissipation structure 11 is a plate-like structure. The heat dissipation structure 11 has a first surface 111a on its first side 11a. A first cover 121 abuts against the first surface 111a and, together with the heat dissipation structure 11, forms a first cavity 10a1. That is, the first cover 121 is the main component forming the first cavity 10a1, while the heat dissipation structure 11 serves only as one side of the cavity wall. Similarly, the heat dissipation structure 11 has a second surface 111b on its second side 11b. A second cover 122 abuts against the second surface 111b and, together with the heat dissipation structure 11, forms a second cavity 10a2. The second cover 122 is the main component forming the second cavity 10a2, while the heat dissipation structure 11 serves only as one side of the cavity wall. Compared to the solution that requires die-casting of the first enclosure plate 112, this embodiment directly utilizes the plate-like heat dissipation structure 11 as the main structural support, reducing production processes and resulting in faster and lower-cost manufacturing.

[0156] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0157] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0158] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0159] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0160] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electrical control box, characterized in that, include: The main box includes a heat dissipation structure, a first box cover, and a second box cover. The heat dissipation structure includes a first side and a second side arranged opposite to each other. The first box cover is disposed on the first side and cooperates with the heat dissipation structure to form a first cavity. The second box cover is disposed on the second side and cooperates with the heat dissipation structure to form a second cavity. A power module includes a first module and a second module that are electrically connected, the first module being disposed in the first cavity and the second module being disposed in the second cavity; The first projection is defined as the orthographic projection of the first cavity onto the heat dissipation structure along the direction toward the second cavity, and the second projection is defined as the orthographic projection of the second cavity onto the heat dissipation structure along the direction toward the first cavity, wherein the first projection and the second projection have mutually offset portions.

2. The electrical control box according to claim 1, characterized in that, The main box has a length direction, and along the length direction, the first projection and the second projection both have overlapping areas. The first projection also has a first offset region, and the second projection also has a second offset region, with the first offset region and the second offset region located on opposite sides of the overlapping region along the length direction.

3. The electrical control box according to claim 2, characterized in that, The main box body also includes a third box cover, which is disposed on the heat dissipation structure and cooperates with the heat dissipation structure to form a third cavity; The power module further includes a third module electrically connected to the first module, and the third module is disposed in the third cavity; Wherein, the orthographic projection of the third cavity toward the plane where the first projection is located does not overlap with the first projection; and / or the orthographic projection of the third cavity toward the plane where the second projection is located does not overlap with the second projection.

4. The electrical control box according to claim 3, characterized in that, The third cavity must satisfy at least one of the following conditions: Along the length direction, the third cavity is located closer to the first offset region than the second offset region; Both the third cavity and the first cavity are located on the first side; The volume of the third cavity is smaller than the volume of the first cavity and smaller than the volume of the second cavity.

5. The electrical control box according to any one of claims 1-4, characterized in that, The heat dissipation structure includes: A cold plate body has heat dissipation channels for supplying heat exchange medium flow, and the cold plate body has a first surface on the first side; and The first enclosure is connected to the first surface, and the heat dissipation channel is set in the area enclosed by the first enclosure; The first box cover is placed on the first enclosure, and the cold plate body, the first enclosure, and the first box cover together form the first cavity.

6. The electrical control box according to claim 5, characterized in that, The cold plate body has a second surface on the second side, and the second cover abuts against the second surface and surrounds the cold plate body to form the second cavity; or The cold plate body has a second surface on the second side, and the heat dissipation structure further includes a second enclosure plate connected to the second surface. The second cover is placed on the second enclosure plate, and the cold plate body, the second enclosure plate, and the second cover together form the second cavity.

7. The electrical control box according to claim 5, characterized in that, The first box cover has a first annular groove, and the electrical control box further includes: A first sealing ring is disposed in the first annular groove, the bottom wall of the first annular groove being disposed opposite to the inner wall surface of the first enclosure plate, so that the first sealing ring is in sealing contact with the inner wall surface of the first enclosure plate.

8. The electrical control box according to claim 7, characterized in that, The first enclosure includes: The enclosure portion, connected to the first surface and extending in a direction away from the second side; and The flanged portion is connected to the end of the enclosure portion away from the first surface, is set at an angle to the enclosure portion, and extends in a direction away from the first cavity; The first box lid includes: First cover body; The first flange edge is connected to the first cover body and is set at an angle to the first cover body, and a portion of the first flange edge is in contact with the flange portion; Cover flange, connected to the first flange edge and extending toward the first surface; and The second flange edge is connected to the end of the cover plate flange away from the first flange edge and is arranged opposite to the first flange edge. The second flange edge, the cover plate flange, and the first flange edge define the first annular groove.

9. The electrical control box according to claim 6, characterized in that, The second cover has a second annular groove, and the electrical control box further includes: A second sealing ring is disposed in the second annular groove, wherein the bottom wall of the second annular groove is disposed opposite to the second surface, so that the second sealing ring and the second surface are in sealing contact.

10. The electrical control box according to claim 9, characterized in that, The second box lid includes: The second cover body; and The third flange edge is connected to the second cover body and is set at an angle to the second cover body. The third flange edge is in contact with the second surface and has the second annular groove.

11. The electrical control box according to claim 10, characterized in that, The second box lid also includes: Multiple connecting lugs are arranged at intervals on the outer periphery of the third flange edge and are all connected to the third flange edge. The connecting lugs are fixedly connected to the cold plate body by fasteners.

12. The electrical control box according to claim 6, characterized in that, Also includes: A protective shell is connected to the main body of the cold plate. The protective shell has a protective cavity and a clearance opening communicating with the protective cavity. The protective cavity and the first cavity are both located on the first side. as well as A power connector is installed on the cold plate body. A part of the power connector extends into the second cavity and is connected to the second module. The other part of the power connector extends into the protective cavity through the clearance opening for connecting an external power cord. The orthographic projection of the protective cavity toward the plane containing the second projection has a portion that is offset from the second projection.

13. The electrical control box according to claim 12, characterized in that, The main body of the cold plate has a first mounting port, and the power terminal includes: An insulating base is inserted through the first mounting opening, and the insulating base has a third annular groove that surrounds the first mounting opening. A third sealing ring is disposed in the third annular groove and located in the second cavity. The bottom wall of the third annular groove is disposed opposite to the second surface so that the third sealing ring and the second surface make a sealing contact.

14. The electrical control box according to claim 5, characterized in that, The main body of the cold plate includes: Cold plate substrate; and The flow channel portion is provided to protrude toward the first cavity relative to the cold plate substrate, so as to form the heat dissipation flow channel within the flow channel portion.

15. The electrical control box according to claim 14, characterized in that, The main body of the cold plate also includes a boss, the flow channel passes through the boss and is connected to the boss, and the boss has a heat-conducting surface; The first module and / or the second module includes at least one primary power element and at least one secondary power element, wherein the power of the primary power element is greater than the power of the secondary power element, and the primary power element is attached to the heat-conducting surface.

16. The electrical control box according to claim 5, characterized in that, The first enclosure has a fan wiring section and a compressor wiring section provided on at least one side of the wall on both sides; The electrical control box also includes: A fan assembly includes a fan terminal block and a fourth sealing ring. The fan terminal block is inserted into the fan connection portion, and the fourth sealing ring is disposed between the fan terminal block and the fan connection portion to seal the gap between them. The compressor assembly includes a compressor lead wire and a fifth sealing ring. The compressor lead wire is inserted into the compressor wiring portion, and the fifth sealing ring is disposed between the compressor lead wire and the compressor wiring portion to seal the gap between the compressor lead wire and the compressor wiring portion.

17. The electrical control box according to any one of claims 1-4, characterized in that, The heat dissipation structure is a plate-shaped structure, and the heat dissipation structure has a first surface on the first side. The first cover abuts against the first surface and surrounds the heat dissipation structure to form the first cavity. The heat dissipation structure has a second surface on the second side, and the second cover abuts against the second surface and surrounds the heat dissipation structure to form the second cavity.

18. The electrical control box according to claim 4, characterized in that, The third module is the main control module. A wire passage groove is provided between the first cavity and the third cavity. The communication line connected to the main control module extends into the third cavity through the wire passage groove. The wire passage groove extends through the opposite sides of the main box along its extension direction to form a first wire passage port and a second wire passage port. The main control module has a peripheral interface and a central interface. The communication line includes a peripheral communication line and a central communication line. The peripheral communication line enters the cable tray through the first cable port and is electrically connected to the peripheral interface. The central communication line enters the cable tray through the second cable port and is electrically connected to the central interface.

19. 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 18, wherein the electrical control box is disposed within the housing.

20. The HVAC equipment according to claim 19, characterized in that, The housing is provided with an inspection port; the electrical control box is located at the inspection port, wherein the opening of the first cavity faces the inspection port.

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