Inverter housing and inverter

Abstract

The present invention belongs to the technical field of inverters, and specifically relates to an inverter housing (10) and an inverter. The inverter housing comprises: a first mounting plate (11), wherein the first mounting plate (11) is provided with a cooling flow channel (15) formed in a first direction; a second mounting plate (12), wherein the second mounting plate (12) and the first mounting plate (11) are spaced apart opposite to each other; two side plates (13) which are connected between the first mounting plate (11) and the second mounting plate (12); and two end plates (14) which are respectively mounted at two ends of an accommodating cavity (101), wherein at least a part of the side walls of at least the first mounting plate (11) and the cooling flow channel (15) are made of an integrally formed and extruded aluminum profile. In the present invention, the cooling flow channel is integrated on the inverter housing, the extruded aluminum profile is directly selected as a blank for the inverter housing, the forming process is simple, the manufacturing cost is low, and the heat-conducting property of the extruded aluminum profile is better than that of a conventional die-cast housing. In addition, since the housing is made of an aluminum material, the housing can be easily welded to other structural parts, thereby avoiding redundant connection and sealing structures.

Description

Inverter housing and inverter Technical Field

[0001] The present invention belongs to the technical field of inverters, and in particular relates to an inverter housing and an inverter. Background Art

[0002] The electric drive axle is the powertrain of new energy electric vehicles, consisting of an inverter, a motor, and a reducer. The inverter converts the direct current (DC) from the vehicle's high-voltage battery into high-voltage alternating current (AC), driving the motor in the desired mode. As the control center of the electric drive axle assembly, the integrated design of the inverter is crucial to its functionality, quality, and efficiency.

[0003] The inverter housing is the main fixing carrier of the inverter. In the existing technology, it is generally a casting. The upper cover and the lower housing are fixed by screws and sealed with sealant; the PCB board and the support plate are fixed by screws; the support plate and the lower housing are fixed by screws; the water-cooling plate and the lower housing are fixed by screws and sealed with sealant; the sealing ring bracket and the sealing ring are connected to the water-cooling plate by a pressure plate and screws to form a closed water channel to realize the cooling and heat dissipation function of the power module.

[0004] Existing inverters have the following main defects:

[0005] The die-cast water channel has a relatively thick wall, which is not conducive to lightweight design. The thermal conductivity is low due to the limitations of the die-cast material, which is not conducive to heat dissipation. The die-cast mold is complex and is formed at high temperature and high pressure, which requires high process requirements and is costly. The die-cast water channel has defects such as pores and shrinkage holes that are inevitable in the die-casting process, which affects the cooling efficiency. The die-cast water channel is large in volume, and the complex structure that is more conducive to flow resistance and heat dissipation cannot be formed inside the water channel. Due to the limitations of material properties, the connection between the die-cast support structure and the shell cannot be welded. The seal between the die-cast shell and the upper cover must be sealed with a sealing ring or wet glue and fixed with screws, which increases the assembly volume and increases the beat and complexity of the whole machine assembly process.

[0006] In addition, the existing inverter plastic-encapsulated busbar capacitors require additional screw fixing structures, and the plastic fixing structures are prone to cracking; the heat dissipation of the busbar capacitors is mainly conducted through the metal heat sink on one side and the cooling plate, which poses a major challenge to its heat dissipation efficiency under high-power conditions.

[0007] Summary of the Invention

[0008] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an inverter housing and an inverter that are lightweight, easy to manufacture and assemble, and can improve heat dissipation efficiency.

[0009] To achieve the above-mentioned and other related objectives, the present invention provides an inverter housing, comprising:

[0010] a first mounting plate, wherein the first mounting plate is provided with a cooling channel arranged along a first direction;

[0011] a second mounting plate, parallel to the first direction, and spaced apart from the first mounting plate;

[0012] Two side panels, parallel to the first direction, connected between the first mounting plate and the second mounting plate, and enclosing a receiving cavity parallel to the first direction with the two side panels, the first mounting plate, and the second mounting plate;

[0013] Two end plates are respectively installed at two ends of the receiving cavity;

[0014] At least the first mounting plate and at least a portion of the side wall of the cooling channel are made of an integrally formed extruded aluminum profile.

[0015] In an optional embodiment of the present invention, the first mounting plate, at least a portion of the side wall of the cooling channel, and the two side plates are made of an integrally formed extruded aluminum profile.

[0016] In an optional embodiment of the present invention, the first mounting plate, at least a portion of the side wall of the cooling channel, the two side plates, and the second mounting plate are made of an integrally formed extruded aluminum profile.

[0017] In an optional embodiment of the present invention, the cooling channel includes a cooling groove and a cover plate, at least the first mounting plate and the cooling groove are made of an integrally formed extruded aluminum profile, the notch of the cooling groove is set toward the side opposite to the receiving cavity, and the cover plate is installed at the notch of the cooling groove so that the two enclose the cooling channel.

[0018] In an optional embodiment of the present invention, both ends of the cooling groove are respectively protruded from both ends of the accommodating cavity to form a first protrusion and a second protrusion, and a liquid inlet and a liquid outlet are respectively provided on the first protrusion and the second protrusion.

[0019] In an optional embodiment of the present invention, sealing members are respectively provided at both ends of the cooling groove.

[0020] In an optional embodiment of the present invention, the end plate is a plastic plate, and the end plate is installed between the inner walls of the end portion of the accommodating cavity in an interference fit manner.

[0021] In an optional embodiment of the present invention, the cooling channel is located in a middle area of ​​the first mounting plate in a width direction, where the width direction of the first mounting plate refers to a direction perpendicular to the first direction and parallel to the plate surface of the first mounting plate.

[0022] In an optional embodiment of the present invention, a hollow portion is provided on the first mounting plate on one side of the cooling channel.

[0023] In an optional embodiment of the present invention, it further includes a mounting foot, which is mounted on the second mounting plate or the side plate or the connection between the mounting plate and the side plate.

[0024] To achieve the above-mentioned and other related purposes, the present invention further provides an inverter, comprising the inverter housing, and

[0025] A power module is installed on a side of the cooling channel opposite to the receiving cavity.

[0026] In an optional embodiment of the present invention, a bus capacitor is further included. The bus capacitor is accommodated in the accommodation cavity, and the accommodation cavity is filled with structural adhesive.

[0027] In an optional embodiment of the present invention, the first mounting plate is provided with a hollow portion, and the output copper busbar of the bus capacitor passes through the hollow portion and is connected to the input end of the power module.

[0028] In an optional embodiment of the present invention, a main output copper busbar is further included. The main output copper busbar is installed on the first mounting plate and is electrically connected to the output end of the power module.

[0029] In an optional embodiment of the present invention, the cooling channel is located in a middle area in the width direction of the first mounting plate, and the main output copper busbar and the hollow portion are respectively located on both sides of the cooling channel in the width direction.

[0030] In an optional embodiment of the present invention, at least one of the end plates is provided with a via hole, and the input copper busbar of the bus capacitor extends to the outside of the accommodating cavity through the via hole.

[0031] In an optional embodiment of the present invention, a driving board is further included. The driving board is installed on a side of the power module opposite to the first mounting board, and the power module is electrically connected to the driving board.

[0032] In an optional embodiment of the present invention, a metal shielding support plate is provided between the drive board and the inverter housing, the edge of the shielding support plate is connected to the first mounting plate, and the drive board is installed on the side of the shielding support plate opposite to the inverter housing.

[0033] In an optional embodiment of the present invention, an insulating layer is provided on the surface of the shielding support plate.

[0034] In an optional embodiment of the present invention, a control board is further included. The control board is installed on a side of the second installation board opposite to the receiving cavity. The control board is electrically connected to the driving board via a cable.

[0035] The technical effect of the present invention is that the present invention integrates the cooling channel on the inverter housing, and the cross-sectional shape of each position of the main structure of the inverter housing is consistent. Extruded aluminum profiles can be directly selected as blanks, and then various detailed features are cut out by machining. Compared with traditional die-cast housings, the present invention has a simple molding process and low manufacturing cost, and the thermal conductivity of the extruded aluminum profile is better than that of traditional die-cast housings. In addition, since the housing is made of aluminum material, it can be easily welded to other structural parts, avoiding redundant connections and sealing structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is an exploded view of an inverter housing provided by an embodiment of the present invention, wherein the end plate is hidden in the figure;

[0037] FIG2 is an exploded view of an inverter provided by an embodiment of the present invention;

[0038] FIG3 is a perspective view of an inverter provided by an embodiment of the present invention from one perspective;

[0039] FIG4 is a perspective view of an inverter provided by an embodiment of the present invention from another perspective;

[0040] FIG5 is a cross-sectional view of an inverter provided by an embodiment of the present invention;

[0041] In order to show the internal structure, the shielding support plate is hidden in Figures 3, 4 and 5;

[0042] Explanation of the accompanying reference numerals: 10. Inverter housing; 101. Accommodating cavity; 11. First mounting plate; 111. Hollow portion; 12. Second mounting plate; 13. Side plate; 14. End plate; 15. Cooling channel; 151. Cooling trough; 152. Cover plate; 153. Liquid inlet; 154. Liquid outlet; 155. Sealing piece; 16. Mounting foot; 20. Power module; 30. Main output copper bus; 40. Drive board; 41. Shielding support plate; 50. Control board; 60. Cable; 71. Output copper bus; 72. Input copper bus. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0044] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0045] The inverter housing and inverter provided by the present invention can be directly applied to the electric drive and power system assembly of new energy vehicles, for example, in the electric drive axle. In the electric drive axle application scenario, the inverter is used to convert the high-voltage direct current of the battery into the high-voltage alternating current required by the motor. The technical solution of the present invention is described in detail below in conjunction with specific embodiments.

[0046] Referring to Figures 1-5, an embodiment of the present invention provides an inverter, including an inverter housing 10, a power module 20, a bus capacitor, a main output copper bus 30, a drive board 40 and a control board 50, wherein the inverter housing 10 serves as an installation carrier for the power module 20, the bus capacitor, the main output copper bus 30, the drive board 40 and the control board 50, the input copper bus 72 of the bus capacitor is used to connect to the battery, the output copper bus 71 of the bus capacitor is connected to the DC input end of the power module 20, the power module 20 performs DC / AC conversion, the AC output end of the power module 20 is connected to the main output copper bus 30, and the main output copper bus 30 is used to connect to the motor; the drive board 40 and the control board 50 are used to collect current or voltage signals of each node of the electric drive bridge and control the operating status of each component.

[0047] Please refer to Figure 1. In a specific embodiment, the inverter housing 10 includes a first mounting plate 11, a second mounting plate 12, two side plates 13 and two end plates 14; the first mounting plate 11 is provided with a cooling channel 15 arranged along a first direction; the second mounting plate 12 is parallel to the first direction, and the second mounting plate 12 is arranged relative to the first mounting plate 11; the two side plates 13 are parallel to the first direction, and the two side plates 13 are connected between the first mounting plate 11 and the second mounting plate 12, and the two side plates 13 and the first mounting plate 11 and the second mounting plate 12 enclose a receiving cavity 101 parallel to the first direction; the two end plates 14 are respectively installed at both ends of the receiving cavity 101; the first mounting plate 11, part of the side wall of the cooling channel 15, the two side plates 13 and the second mounting plate 12 are made of an integrally formed extruded aluminum profile.

[0048] The present invention integrates the cooling channel 15 on the inverter housing 10. The cross-sectional shape of each position of the main structure of the inverter housing 10 is consistent. Extruded aluminum profiles can be directly selected as the blank, and then various detailed features are cut out by machining. Compared with traditional die-cast housings, the present invention has a simple molding process and low manufacturing cost. The thermal conductivity of the extruded aluminum profile is better than that of traditional die-cast housings. In addition, since the housing is extruded from aluminum material, it can be easily welded to other structural parts, avoiding redundant connections and sealing structures.

[0049] It should be understood that, in addition to the above-mentioned embodiments, the inverter housing 10 of the present invention can also freely select an integration method according to actual design needs. For example, in some other embodiments, only the cooling channel 15 and the first mounting plate 11 can be integrated into an integrated structure, that is, the cooling channel 15 and the first mounting plate 11 are made of extruded aluminum profiles, while the side panels 13 and the second mounting plate 12 are made of separate extruded aluminum profiles, and then the two are welded in real time; for another example, the first mounting plate 11, the cooling channel 15 and the side panels 13 can be integrated into an integrated structure, and the three can be made of an integrated extruded aluminum profile, and then the extruded aluminum profile is welded to the second mounting plate 12. Of course, inspired by these embodiments, for example, integrating one side panel 13 with the first mounting plate 11 and integrating another side panel 13 with the second mounting plate 12, or dividing the side panel 13 into two parts and integrating them respectively with the first mounting plate 11 and the second mounting plate 12, these simple variations should all fall within the scope of protection claimed by the present invention.

[0050] Referring to FIG. 1 , in an optional embodiment of the present invention, the cooling channel 15 includes a cooling groove 151 and a cover plate 152. At least the first mounting plate 11 and the cooling groove 151 are formed from an integrally formed extruded aluminum profile. The notch of the cooling groove 151 faces the side opposite to the receiving cavity 101, and the cover plate 152 is mounted on the notch of the cooling groove 151 so that the two together enclose the cooling channel 15. The ends of the cooling groove 151 protrude from the ends of the receiving cavity 101 to form a first protrusion and a second protrusion. The first protrusion and the second protrusion are respectively provided with a liquid inlet 153 and a liquid outlet 154. A sealing member 155 is provided at each end of the cooling groove 151. In a specific embodiment, the cooling groove 151, the cover plate 152, and the sealing member 155 can be fixed together, for example, by welding. The heat transfer medium in the cooling channel 15 can be cooling water or cooling oil.

[0051] It should be understood that in this embodiment, the liquid inlet 153 and the liquid outlet 154 are arranged below the cooling channel 15. On the one hand, it can be compatible with the water channel design of the existing electric drive axle, and on the other hand, it can also facilitate the compression and sealing of the water inlet pipe and the water outlet pipe.

[0052] Referring to Figures 2 and 5 , the power module 20 is mounted on the side of the cooling channel 15 opposite the receiving cavity 101. It should be understood that the power module 20 is the primary heat-generating component of the inverter. The present invention effectively ensures the inverter's heat dissipation efficiency by mounting the power module 20 in close proximity to the cooling channel 15. In a further preferred embodiment, to achieve improved heat transfer efficiency between the power module 20 and the cooling channel 15, a thermally conductive medium, such as a coating of thermally conductive silicone, may be provided between the power module 20 and the cooling channel 15.

[0053] Please refer to Figures 3 and 4. In an optional embodiment of the present invention, the end plate 14 is a plastic plate, and the end plate 14 is installed between the inner walls of the end of the receiving cavity 101 in an interference fit manner; the cooling channel 15 is located in the middle area of ​​the width direction of the first mounting plate 11, and the width direction of the first mounting plate 11 refers to the direction perpendicular to the first direction and parallel to the plate surface of the first mounting plate 11; a hollow portion 111 is provided on the first mounting plate 11 on one side of the cooling channel 15. The busbar capacitor (not shown) is accommodated in the receiving cavity 101, and the receiving cavity 101 is poured with structural glue. It should be understood that the present invention integrates a busbar capacitor housing, and the busbar capacitor is assembled into a capacitor core assembly by a capacitor core, a copper busbar, and insulating paper, and the capacitor core assembly and the housing are connected by a vacuum potting process. In this embodiment, after the capacitor core assembly is fully installed, the two end plates 14 are mounted at both ends of the receiving cavity 101. Glue is then poured into the receiving cavity 101 through the hollow portion 111. After the glue solidifies, the busbar capacitor and the inverter housing are integrated. The use of plastic end plates 14 in this embodiment allows for a tight connection with the structural adhesive, eliminating the need for connecting the end plates 14 to other parts of the housing. This simplifies the assembly process, reduces material costs, and results in a lighter weight design.

[0054] As shown in Figure 5, the output copper busbar 71 of the bus capacitor passes through the hollow portion 111 and is connected to the input end of the power module 20; the main output copper busbar 30 is installed on the first mounting plate 11, and the main output copper busbar 30 is electrically connected to the output end of the power module 20; the main output copper busbar 30 and the hollow portion 111 are respectively located on both sides of the width direction of the cooling channel 15, and the layout of the upstream and downstream components of the power module 20 is more compact, which is conducive to the miniaturization design of the inverter.

[0055] Referring to Figure 4 , in an optional embodiment of the present invention, at least one of the end plates 14 is provided with a via hole, through which the input copper busbar 72 of the busbar capacitor extends to the exterior of the receiving cavity 101. In the illustrated embodiment, the input copper busbar 72 is introduced from one of the end plates 14. It should be understood that in other embodiments, the input copper busbar 72 may also be introduced from both end plates 14, for example.

[0056] Please refer to Figures 2-5. The drive board 40 is installed on the side of the power module 20 opposite to the first mounting plate 11, and the power module 20 is electrically connected to the drive board 40. A metal shielding support plate 41 is provided between the drive board 40 and the inverter housing 10. The edge of the shielding support plate 41 is connected to the first mounting plate 11, and the drive board 40 is installed on the side of the shielding support plate 41 opposite to the inverter housing 10. Preferably, an insulating layer is provided on the surface of the shielding support plate 41. The control board 50 is installed on the side of the second mounting plate 12 opposite to the receiving cavity 101, and the control board 50 is electrically connected to the drive board 40 via a cable 60.

[0057] It should be understood that the present invention splits a PCB board of a traditional inverter into a drive board 40 and a control board 50. On the one hand, it can separate strong and weak electricity to prevent signal interference. On the other hand, it also makes the inverter structure more compact, which is conducive to achieving miniaturized design.

[0058] Please refer to Figures 1-5. In a specific embodiment, the inverter housing 10 also includes a mounting foot 16 to facilitate the connection between the inverter and the electric drive axle housing. The mounting foot 16 is installed on the second mounting plate 12 or the side plate 13 or the connection between the mounting plate and the side plate 13.

[0059] In summary, the inverter housing 10 of the present invention has low raw material cost, small material volume, low mold cost, and simple molding process, which can greatly reduce the raw material cost of the inverter; the present invention combines the water cooling plate and the sealing ring parts into one, which reduces the complexity of the inverter assembly process and reduces the production process cost of the inverter; the fixed connection of parts and the water channel sealing function are achieved by welding, which can save the assembly process of gluing / sealing ring assembly and screwing, reduce the complexity of the inverter assembly process and reduce the production cycle; the extruded aluminum profile has a thinner wall thickness, which makes the overall volume and weight of the inverter smaller, greatly improving the space utilization of the inverter on the whole vehicle; the aluminum housing provides laser The feasibility of welding allows the water channel to be connected to the upper cover and end cover by welding, further reducing the inverter boundary and improving the space utilization of the entire vehicle; the extruded aluminum profile molding material has a dense structure and few defects such as pores, which reduces the risk of water channel leakage and improves the corrosion resistance of the water channel, which is beneficial to improving the quality of the inverter product; the aluminum shell has a high thermal conductivity coefficient and good thermal conductivity efficiency, which is beneficial to improving the heat dissipation efficiency of the inverter; the wall thickness of the extruded aluminum profile can reach 0.5mm-1.0mm, and the thinner wall thickness improves the heat dissipation efficiency under the same water channel volume, greatly improving the overall power density of the inverter product; the present invention has simple molding and flexible process, which is beneficial to the subsequent modification and upgrading of the inverter.

[0060] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

[0061] In the description herein, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, assemblies, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0062] Reference throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein are possible in light of the teachings herein and are considered part of the spirit and scope of the invention.

[0063] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0064] In addition, unless otherwise expressly indicated, any marking arrows in the drawings should be regarded as illustrative only and not limiting. Furthermore, unless otherwise indicated, the term "or" as used herein is generally intended to mean "and / or." Where a term is unclear in providing separation or combination capabilities, the combination of components or steps will also be considered as indicated.

[0065] As used in the description herein and throughout the claims that follow, “a,” “an,” and “the” include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless otherwise indicated.

[0066] The above description of the illustrated embodiments of the present invention (including that described in the Abstract) is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, as those skilled in the art will recognize and appreciate, various equivalent modifications are possible within the spirit and scope of the present invention. As noted, modifications may be made to the present invention in light of the above description of the illustrated embodiments of the present invention, and such modifications will be within the spirit and scope of the present invention.

[0067] Systems and methods have been generally described herein in detail to facilitate understanding of the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of these specific details, or with other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0068] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are contemplated within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the claimed invention. Thus, many modifications may be made to adapt a particular environment or material to the true scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the claims below and / or to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention is intended to include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. An inverter housing, characterized in that: include: A first mounting plate, wherein the first mounting plate is provided with a cooling channel arranged along a first direction; A second mounting plate, parallel to the first direction, and the second mounting plate is arranged opposite to the first mounting plate and spaced apart from each other; Two side plates, parallel to the first direction, the two side plates are connected between the first mounting plate and the second mounting plate, and the two side plates, the first mounting plate and the second mounting plate enclose a receiving cavity parallel to the first direction; Two end plates are respectively installed at two ends of the receiving cavity; At least the first mounting plate and at least a portion of the side wall of the cooling channel are made of an integrally formed extruded aluminum profile.

2. The inverter housing according to claim 1, characterized in that: The first mounting plate, at least a portion of the side wall of the cooling channel, and the two side plates are made of an integrally formed extruded aluminum profile.

3. The inverter housing according to claim 1, characterized in that: The first mounting plate, at least a portion of the side wall of the cooling channel, the two side plates and the second mounting plate are made of an integrally formed extruded aluminum profile.

4. The inverter housing according to claim 1, characterized in that: The cooling channel includes a cooling groove and a cover plate. At least the first mounting plate and the cooling groove are made of an integrally formed extruded aluminum profile. The notch of the cooling groove is arranged toward the side opposite to the accommodating cavity. The cover plate is installed at the notch of the cooling groove so that the two enclose the cooling channel.

5. The inverter housing according to claim 4, characterized in that: Two ends of the cooling groove are respectively protruded from two ends of the accommodating cavity to form a first protruding portion and a second protruding portion, and a liquid inlet and a liquid outlet are respectively provided on the first protruding portion and the second protruding portion.

6. The inverter housing according to claim 5, characterized in that: Both ends of the cooling groove are respectively provided with blocking pieces.

7. The inverter housing according to claim 6, characterized in that: The end plate is a plastic plate, and is installed between the inner walls of the end of the accommodating cavity in an interference fit manner.

8. The inverter housing according to claim 1, characterized in that: The cooling channel is located in a middle area of ​​the first mounting plate in a width direction, where the width direction of the first mounting plate refers to a direction perpendicular to the first direction and parallel to a plate surface of the first mounting plate.

9. The inverter housing according to claim 8, characterized in that: A hollow portion is provided on the first mounting plate on one side of the cooling channel.

10. The inverter housing according to claim 1, characterized in that: It also includes a mounting foot, which is mounted on the second mounting plate or the side plate or at the connection between the mounting plate and the side plate.

11. An inverter, characterized in that: The inverter housing according to claim 1, and A power module is installed on a side of the cooling channel opposite to the receiving cavity.

12. The inverter according to claim 11, characterized in that: It also includes a bus capacitor, which is accommodated in the accommodating cavity, and the accommodating cavity is filled with structural glue.

13. The inverter according to claim 12, characterized in that: The first mounting plate is provided with a hollow portion, and the output copper bar of the bus capacitor passes through the hollow portion and is connected to the input end of the power module.

14. The inverter according to claim 13, characterized in that: It also includes a main output copper busbar, which is installed on the first mounting plate and is electrically connected to the output end of the power module.

15. The inverter according to claim 14, characterized in that: The cooling channel is located in the middle area of ​​the first mounting plate in the width direction, and the main output copper bar and the hollow portion are respectively located on both sides of the cooling channel in the width direction.

16. The inverter according to claim 11, characterized in that: At least one of the end plates is provided with a via hole, and the input copper busbar of the bus capacitor extends to the outside of the accommodating cavity through the via hole.

17. The inverter according to claim 11, characterized in that: It also includes a driving board, which is installed on a side of the power module opposite to the first mounting board, and the power module is electrically connected to the driving board.

18. The inverter according to claim 17, characterized in that: A metal shielding support plate is provided between the driving plate and the inverter housing, the edge of the shielding support plate is connected to the first mounting plate, and the driving plate is mounted on a side of the shielding support plate opposite to the inverter housing.

19. The inverter according to claim 18, characterized in that: An insulating layer is provided on the surface of the shielding support plate.

20. The inverter according to claim 17, characterized in that: It also includes a control board, which is installed on the side of the second installation board opposite to the receiving cavity, and the control board is electrically connected to the driving board through a flat cable.

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