Inverter module, inverter and automobile

Abstract

The utility model discloses an inversion module, comprising a first module which comprises a water cooling module, a power module and a driving board which are arranged in sequence along a first direction; the second module is flatly laid on one side of the first module in the second direction, the second module comprises a capacitor, the capacitor is electrically connected with the power module, and the first direction intersects with the second direction. According to the utility model, the first module and the second module can be integrated, and the function of the core module of the inverter can be exerted only by simply connecting the inverter module as a whole with other components of the inverter. In addition, the second module is flatly laid on one side of the first module in the second direction, so that the height of the inversion module in the first direction can be effectively reduced. The utility model also provides an inverter and an automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, and in particular to an inverter module, an inverter and a car. Background Art

[0002] An inverter is an electronic device that can convert direct current into alternating current. In new energy vehicles, the inverter is usually composed of an electronic switching circuit composed of multiple power semiconductor devices (such as IGBT, MOSFET, etc.), among which IGBT (Insulated Gate Bipolar Transistor) is an insulated gate bipolar transistor and MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a metal-oxide semiconductor field effect transistor. Through these switching circuits, the direct current provided by the battery can be converted into alternating current to meet the needs of the motor.

[0003] The inverter can convert the direct current stored in the battery into alternating current to drive the motor, which has an important impact on the energy conversion efficiency of new energy vehicles. In the prior art, the inverter is composed of multiple sub-modules that need to be independently developed and designed. In the production and manufacturing of the inverter, the sub-modules need to be assembled together to form the core module of the inverter. The assembly process is complicated and leads to an increase in the research and development cost of the inverter. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of complex assembly and high R&D cost of the core module of the inverter in the prior art. The utility model provides an inverter module, an inverter and a car, which can highly integrate the submodules of the inverter to form an inverter module, that is, obtain a highly integrated core module of the inverter, simplify the assembly process, and effectively reduce the R&D cost.

[0005] In order to solve the above technical problems, the embodiment of the utility model discloses an inverter module, comprising:

[0006] A first module, along a first direction, the first module comprising a water cooling module, a power module and a driving board arranged in sequence;

[0007] The second module is laid flat on one side of the first module along a second direction. The second module includes a capacitor, which is electrically connected to the power module. The first direction intersects with the second direction.

[0008] By adopting the above technical solution, the water cooling module, the power module and the driver board are integrated into the first module, and the second module is integrated with a capacitor. In this way, the first module and the second module are integrated into one body, and the function of the inverter core module can be exerted by simply connecting the highly integrated inverter module as a whole with other components of the inverter. In addition, the second module is laid flat on one side of the first module along the second direction, which can effectively reduce the height of the inverter module in the first direction.

[0009] According to another specific embodiment of the utility model, the embodiment of the utility model discloses an inverter module, wherein the power module comprises a positive copper bar and a negative copper bar, and along the second direction, the capacitor has an output end on a side close to the first module, and the output end extends out of the first module, and the positive copper bar and the negative copper bar are arranged on a side of the power module close to the capacitor;

[0010] The positive copper bar and the negative copper bar are both electrically connected to the output end, and along the first direction, the positive copper bar and the negative copper bar are spaced apart on both sides of the output end.

[0011] By adopting the above technical solution, along the second direction, the positive copper bar, the negative copper bar and the output end of the capacitor are close to each other, so that the positive copper bar and the negative copper bar are both electrically connected to the output end, and in the first direction, the positive copper bar and the negative copper bar are spaced apart on both sides of the output end, which can avoid the positive copper bar and the negative copper bar from contacting and short-circuiting, thereby improving the safety of the inverter module.

[0012] According to another specific embodiment of the utility model, the embodiment of the utility model discloses an inverter module, the first shell is laid flat on one side of the first module, the second module includes a first shell and an input part, the capacitor is arranged in the first shell, the input part includes a mounting plate and an input end, the mounting plate is embedded in the surface of the first shell, and the input end is arranged on the mounting plate for electrically connecting to an external power supply.

[0013] By adopting the above technical solution, the mounting plate is arranged independently of the first shell. Before manufacturing the first shell, the mounting position of the mounting plate can be reserved in advance on the surface of the first shell according to actual needs, so that the position of the input end can be set at different positions on the surface of the first shell as needed.

[0014] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an inverter module, wherein the water cooling module includes a second shell having an opening, the second shell is laid flat on one side of the first shell, and the second shell is integrally formed with the first shell.

[0015] By adopting the above technical solution, the second shell and the first shell can be manufactured as a whole, thereby effectively simplifying the assembly process of the second shell and the first shell.

[0016] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an inverter module, wherein the first shell and the second shell are both in a rectangular parallelepiped shape.

[0017] By adopting the above technical solution, the inverter module provided by the present application can have a more regular appearance and a compact internal structure, which is convenient for arrangement in other devices.

[0018] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an inverter module, wherein the first shell and the second shell are both made of metal, and the mounting plate is a non-conductive member.

[0019] By adopting the above technical solution, the first shell and the second shell are both made of metal, which usually has good thermal conductivity and can provide protection for the components in the first shell and the second shell; the mounting plate is a non-conductive part (such as plastic), which can prevent the risk of short circuit caused by contact between the input end and the metal shell, thereby improving the safety of the inverter module.

[0020] According to another specific embodiment of the utility model, the embodiment of the utility model discloses an inverter module, wherein the power module comprises a support portion, and along the first direction, the support portion is arranged on a side of the power module facing away from the driving board, and the support portion has a plurality of cooling portions, and the plurality of cooling portions are arranged at intervals along the second direction;

[0021] The supporting portion covers the open portion of the second shell to form a cooling cavity together with the second shell, and the multiple cooling portions are located in the cooling cavity; along the first direction, a water inlet and a water outlet are opened on the side of the second shell facing away from the power module, and the water inlet and the water outlet are both connected to the cooling cavity.

[0022] By adopting the above technical solution, the power module is connected to the second shell through the support part, and the cooling part of the support part forms a plurality of cooling channels in the cooling groove of the second shell, so that the support part can directly contact the coolant in the cooling channel to obtain a better cooling effect; in addition, the plurality of cooling channels are arranged at intervals along the second direction, which can increase the contact area between the support part and the coolant and further improve the cooling effect.

[0023] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an inverter module, wherein the inverter module comprises an electromagnetic shielding cover, and along the first direction, the electromagnetic shielding cover is arranged between the driving board and the power module.

[0024] By adopting the above technical solution, an electromagnetic shielding cover is provided between the driving board and the power module, which can avoid electromagnetic interference between the driving board and the power module, thereby improving the EMC performance (ie electromagnetic compatibility) of the inverter module.

[0025] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an inverter module, wherein a plurality of reinforcing ribs are arranged at intervals on the surface of the electromagnetic shielding cover.

[0026] The adoption of the above technical solution can help the electromagnetic shielding cover to better withstand external loads and improve its overall stability.

[0027] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an inverter module, wherein the first module and the second module are both in a rectangular parallelepiped shape.

[0028] By adopting the above technical solution, the overall brick-shaped inverter module is more suitable for installation in the electric drive system of the automobile.

[0029] The embodiment of the utility model further discloses an inverter, which at least includes the inverter module in any one of the above embodiments.

[0030] By adopting the above technical solution, the overall R&D cost of the inverter can be reduced.

[0031] The embodiment of the utility model further discloses a car, which at least comprises the inverter in the above embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram showing the positional relationship between the first module and the second module of the inverter module provided in an embodiment of the present application is shown.

[0033] Figure 2 An exploded view of a first module of the inverter module provided in an embodiment of the present application is shown.

[0034] Figure 3 A cross-sectional view of an inverter module provided in an embodiment of the present application is shown.

[0035] Figure 4 A bottom view of the inverter module provided in an embodiment of the present application is shown.

[0036] Figure 5 A three-dimensional schematic diagram of an inverter module provided in an embodiment of the present application is shown.

[0037] Figure 6 A schematic diagram showing that a mounting plate of an input part of an inverter module provided in an embodiment of the present application is located on a third surface.

[0038] Figure 7 A schematic diagram showing that a mounting plate of an input part of an inverter module provided in an embodiment of the present application is located on the second surface. DETAILED DESCRIPTION

[0039] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0040] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0042] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0043] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0044] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] In some embodiments, see Figure 1 , an inverter module provided by the present application includes a first module 10 and a second module 20, wherein the first module 10 is in the shape of a rectangular parallelepiped as a whole, and the second module 20 is also in the shape of a rectangular parallelepiped as a whole, and along the second direction Y, the second module 20 is laid flat on one side of the first module 10, and the core module of the inverter obtained by integrating the first module 10 and the second module 20 is in the shape of a rectangular parallelepiped as a whole, which can be called an inverter brick. It should be understood that the first module 10 or the second module 20 referred to herein as being in the shape of a rectangular parallelepiped as a whole means that the envelope of the module is basically in the shape of a rectangular parallelepiped, and such a regular shape is conducive to the arrangement of the inverter module in the inverter; such a description is not intended to limit all outward surfaces of the module to be flat surfaces, nor is it intended to limit the relative surfaces of the module to have an absolutely parallel relationship and / or the adjacent surfaces to have an absolutely perpendicular relationship. In addition, it should also be understood that the rectangular parallelepiped referred to herein includes special rectangular parallelepipeds (i.e., cubes) and non-special rectangular parallelepipeds.

[0046] It should be noted that Figure 1 It is only a schematic diagram of the positional relationship between the first module 10 and the second module 20. Figure 1 In the embodiment, the height of the first module 10 in the first direction X is lower than that of the second module 20. In other embodiments, along the first direction X, the heights of the first module 10 and the second module 20 may be flush, or the height of the first module 10 may be higher than that of the second module 20.

[0047] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , along the first direction X, the first module 10 includes a water cooling module 11, a power module 12 and a driving board 13 arranged in sequence; the second module 20 includes a capacitor 23 (see Figure 3 ) and the first housing 21, the capacitor 23 is electrically connected to the power module 12, and the first direction X is perpendicular to the second direction Y. Exemplarily, the drive board 13 is a PCB circuit board, the drive board 13 has a drive circuit, and the drive board 13 is electrically connected to the power module 12, and is used to drive the various components of the inverter module to work normally and convert direct current into alternating current output.

[0048] By integrating the modules constituting the inverter core module into an inverter module, the inverter core module can function by simply connecting the inverter module as a whole with other components of the inverter. In addition, the second module 20 is laid flat on one side of the first module 10 along the second direction Y, which can effectively reduce the height of the inverter module in the first direction X, and is more conducive to installation in the electric drive system of the vehicle.

[0049] In some embodiments, the inverter module includes an electromagnetic shielding cover 14, and the electromagnetic shielding cover 14 is arranged between the drive board 13 and the power module 12 along the first direction X. Exemplarily, the electromagnetic shielding cover 14 is a plate-like structure, which can avoid electromagnetic interference between the drive board 13 and the power module 12, thereby improving the EMC performance of the inverter module, that is, improving the electromagnetic radiation shielding performance of the inverter module. In some embodiments, a plurality of reinforcing ribs 141 are arranged at intervals on the surface of the electromagnetic shielding cover 14. For the electromagnetic shielding cover 14 arranged in a thin plate shape, the arrangement of the reinforcing ribs 141 can effectively improve the strength and stability of the electromagnetic shielding cover 14.

[0050] In some embodiments, the power module 12 includes a positive copper busbar 121 and a negative copper busbar 122. Along the second direction Y, the capacitor 23 has an output terminal 234 on the side close to the first module 10. The output terminal 234 extends out of the first module 10 and is arranged at the junction of the first module 10 and the second module 20. The positive copper busbar 121 and the negative copper busbar 122 are arranged on the side of the power module 12 close to the capacitor 23; the positive copper busbar 121 and the negative copper busbar 122 are both electrically connected to the output terminal 234, and along the first direction X, the positive copper busbar 121 and the negative copper busbar 122 are arranged at intervals on both sides of the output terminal 234.

[0051] Exemplarily, the output end 234 is a conductive metal block, and the positive copper bar 121 and the negative copper bar 122 are connected to the output end 234 by welding, wherein the positive copper bar 121 is arranged on the side of the output end 234 close to the water cooling module 11 in the first direction X, and the negative copper bar 122 is arranged on the side of the output end 234 facing away from the positive copper bar 121. In this way, it can be ensured that the DC power stored in the capacitor 23 is transmitted to the power module 12 without short-circuiting the positive copper bar 121 and the negative copper bar 122.

[0052] In some embodiments, the power module 12 further includes a three-phase output copper bar 123, which includes three independent copper bars, which are arranged at intervals along the third direction Z. Along the second direction Y, one end of the three copper bars is respectively connected to the power output ends of the three phases, and the other end extends out of the first module 10 to output the AC power obtained through the inverter to the electrical appliance, for example, the AC power obtained through the inverter can be output to the vehicle motor for use. Exemplarily, along the second direction Y, the three-phase output copper bar 123 is arranged on the side of the power module 12 away from the capacitor 23.

[0053] In some embodiments, the water cooling module 11 includes a second housing 111, and the water cooling module 11, the power module 12, and the drive board 13 are sequentially stacked in the second housing 111 along the first direction X. The power module 12 includes a support portion 124, and the support portion 124 is disposed on the side of the power module 12 facing away from the drive board 13 along the first direction X. The support portion 124 has a plurality of cooling portions 1241, and the plurality of cooling portions 1241 are disposed at intervals along the second direction Y; the support portion 124 covers the opening of the second housing 111 to enclose a cooling cavity with the second housing 111, and the plurality of cooling portions 1241 are located in the cooling cavity, and a plurality of cooling channels 113 are formed in the cooling cavity, and the plurality of cooling channels 113 are interconnected and extend along the third direction Z.

[0054] Exemplarily, the support portion 124 is a horizontal plate-like structure in the second direction Y, and the support portion 124 is arranged between the second shell 111 and the power module 12; the cooling portion 1241 is a vertical plate-like structure in the first direction X, that is, the cooling portion 1241 is a fin extending from the support portion 124 along the first direction X toward the bottom 112 of the cooling cavity.

[0055] In some embodiments, Figure 3 13 cooling parts 1241 are shown, and the 13 cooling parts 1241 are arranged at intervals along the second direction Y, abutting against the support part 124 and the bottom 112 of the cooling cavity in the first direction X, and forming 14 cooling channels 113 together with the second shell 111. Along the second direction Y, except for the first cooling channel 1131 and the last cooling channel 1132, which are only arranged at intervals with one cooling part 1241, the remaining cooling channels 113 are arranged at intervals with two cooling parts 1241. It can be understood that the present application does not limit the number of cooling parts 1241 and cooling channels 113, and they can be arranged according to actual needs.

[0056] The support portion 124 and the cooling portion 1241 provided in the present application are integrally arranged, and can efficiently transfer the heat generated by the power module 12 to the cooling groove 115 for cooling, and form multiple cooling channels 113 through multiple cooling portions 1241 to increase the contact area between the support portion 124 and the coolant as much as possible, thereby further improving the cooling effect.

[0057] In some embodiments, along the first direction X, a sealing groove 114 is provided on one side of the second housing 111 facing the power module 12, and a sealing ring 15 is provided in the sealing groove 114, and the sealing ring 15 abuts against the support portion 124. Exemplarily, the sealing groove 114 and the sealing ring 15 are arranged around the cooling groove 115, and by arranging the sealing ring 15 between the support portion 124 and the second housing 111, it is possible to prevent the coolant in the cooling groove 115 from leaking and causing damage to the circuit in the inverter module, thereby improving the safety of the inverter module. Exemplarily, both the sealing groove 114 and the sealing ring 15 can be annular, and the present application does not limit the shape and size of the sealing groove 114 and the sealing ring 15.

[0058] In some embodiments, see Figures 2 to 4 , along the first direction X, a water inlet 116 and a water outlet 117 are provided on a side of the second housing 111 facing away from the power module 12, and both the water inlet 116 and the water outlet 117 are connected to the cooling groove 115, and along the third direction Z, the water inlet 116 and the water outlet 117 are arranged at intervals. Exemplarily, the water inlet 116 and the water outlet 117 are both long strip-shaped openings extending along the second direction Y to increase the amount of water inlet or water outlet.

[0059] It should be noted that the water cooling module 11, the power module 12, the electromagnetic shielding cover 14 and the driving plate 13 arranged in sequence along the first direction X are all fixedly connected together by bolts to form a Figure 5 The inverter module shown. It is understandable that the modules are not limited to being connected by bolts, but can also be fixed together by fasteners such as screws, nuts, washers, etc., and this application does not limit this.

[0060] In some embodiments, the second module includes an input unit 22, a capacitor 23 is disposed in the first shell 21, the input unit 22 includes a mounting plate 222 and an input terminal 221, the mounting plate 222 is embedded in the surface of the first shell 21, and the input terminal 221 is protruded from the mounting plate 222. Exemplarily, the input terminal 221 is two metal plates spaced apart along the second direction Y, and the metal plates are provided with mounting holes for convenient electrical connection with an external power source, such as a battery of a vehicle. The mounting plate 222 is disposed independently of the first shell 21, and the first shell 21 is usually integrally die-cast. Before the first shell 21 is die-casted, the mounting position of the mounting plate 222 can be reserved in advance on the surface of the first shell 21 according to actual needs, so that the position of the input terminal 221 can be set at different positions on the surface of the first shell 21 as needed.

[0061] In some embodiments, the second shell 111 and the first shell 21 are integrally formed, that is, the second shell 111 and the first shell 21 can be die-cast as a whole, which can effectively simplify the assembly process. In some embodiments, the first shell 21 and the second shell 111 are both metal, and the mounting plate 222 is a non-conductive part. It should be noted that the manufacturing method of the first shell 21 and the second shell 21 is not limited to the die-casting method provided in this application, and this application does not limit this.

[0062] Exemplarily, the first housing 21 and the second housing 111 are both made of aluminum alloy, the mounting plate 222 is made of plastic, and the metal housings of the first module 10 and the second module 20 can provide protection and support for the components in the housings, and can cool the first module 10 and the second module 20 through the cooling module by virtue of the thermal conductivity of the metal. In addition, the mounting plate 222, which is not conductive, can also prevent the risk of short circuit caused by the contact between the input terminal 221 and the metal housing.

[0063] It is understandable that the present application does not impose any limitation on the specific metal used for the first shell 21 and the second shell 111 and the specific non-conductive member used for the mounting plate 222 .

[0064] In some embodiments, the capacitor 23 includes a first conductor 231 and a second conductor 232, the first conductor 231 and the second conductor 232 are arranged at intervals along the first direction X, and a medium 233 is poured between the first conductor 231 and the second conductor 232. Exemplarily, the first conductor 231 and the second conductor 232 can be metal plates, and the medium 233 is epoxy resin. It can be understood that the selection of the first conductor 231, the second conductor 232 and the medium 233 can be set according to actual needs, and this application does not limit this.

[0065] For example, see Figure 6 , Figure 7 The first shell is in the shape of a cuboid, and includes a first surface 211, a second surface 212, a third surface 213, a fourth surface 214, a fifth surface 215 and a sixth surface 216, wherein the first surface 211 and the second surface 212 are arranged opposite to each other along the second direction Y, the third surface 213 and the fourth surface 214 are arranged opposite to each other along the first direction X, and the fifth surface 215 and the sixth surface 216 are arranged opposite to each other along the third direction Z.

[0066] In some embodiments, the output end 234 of the capacitor 23 is disposed on the first surface 211 , the aforementioned mounting plate 222 is located on the fifth surface 215 or the sixth surface 216 , and a mounting portion is provided on the second surface 212 for fixing the inverter module to other parts. Figure 2The situation shown is that the mounting plate 222 is located on the fifth surface 215 . At this time, the surface area of ​​the mounting plate 222 is equal to the area of ​​the fifth surface 215 , that is, the surface of the mounting plate 222 forms the fifth surface 215 of the first shell 21 , and the input end 221 is arranged on the fifth surface 215 .

[0067] It is understandable that the size of the mounting plate 222 can be set as needed, that is, in some embodiments, the surface area of ​​the mounting plate 222 can be smaller than the area of ​​the fifth surface 215. The present application does not limit the size and position of the mounting plate 222. For example, in some embodiments, refer to Figure 6 The mounting plate 222 may also be disposed on the third surface 213, see Figure 7 The mounting plate 222 may also be disposed on the second surface 212 .

[0068] The present application also provides an inverter, comprising at least the inverter module in any of the aforementioned embodiments.

[0069] The present application also provides a car, comprising at least the inverter in any of the aforementioned embodiments.

[0070] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An inverter module, characterized in that: include: A first module, along a first direction, the first module comprising a water cooling module, a power module and a driving board arranged in sequence; The second module is laid flat on one side of the first module along a second direction. The second module includes a capacitor, which is electrically connected to the power module. The first direction is perpendicular to the second direction.

2. The inverter module according to claim 1, characterized in that: The power module comprises a positive copper bar and a negative copper bar. Along the second direction, the capacitor has an output terminal on a side close to the first module, and the output terminal extends out of the first module. The positive copper bar and the negative copper bar are arranged on a side of the power module close to the capacitor. The positive copper bar and the negative copper bar are both electrically connected to the output end, and along the first direction, the positive copper bar and the negative copper bar are arranged at two sides of the output end at intervals.

3. The inverter module according to claim 1, characterized in that: The second module includes a first shell and an input part, the first shell is laid flat on one side of the first module, the capacitor is arranged in the first shell, the input part includes a mounting plate and an input end, the mounting plate is embedded in the surface of the first shell, and the input end is protruded from the mounting plate for electrical connection with an external power supply.

4. The inverter module according to claim 3, characterized in that: The water cooling module includes a second shell with an opening, the second shell is laid flat on one side of the first shell, and the second shell is integrally formed with the first shell.

5. The inverter module according to claim 4, characterized in that: The first shell and the second shell are both made of metal.

6. The inverter module according to claim 4, characterized in that: The first shell and the second shell are both in a rectangular parallelepiped shape.

7. The inverter module according to claim 5, characterized in that: The mounting plate is a non-conductive member.

8. The inverter module according to claim 4, characterized in that: The power module comprises a support portion, which is arranged on a side of the power module facing away from the driving board along the first direction, and has a plurality of cooling portions, which are arranged at intervals along the second direction; The support portion is covered on the open portion of the second shell to enclose a cooling cavity with the second shell, and the plurality of cooling portions are located in the cooling cavity; Along the first direction, a water inlet and a water outlet are formed on a side of the second shell facing away from the power module, and both the water inlet and the water outlet are communicated with the cooling cavity.

9. The inverter module according to claim 1, characterized in that: The inverter module comprises an electromagnetic shielding cover, and along the first direction, the electromagnetic shielding cover is arranged between the driving board and the power module.

10. The inverter module according to claim 9, characterized in that: A plurality of reinforcing ribs are arranged at intervals on the surface of the electromagnetic shielding cover.

11. The inverter module according to any one of claims 1 to 10, characterized in that: The first module and the second module are both in a rectangular parallelepiped shape.

12. An inverter, characterized in that: It comprises the inverter module as claimed in any one of claims 1 to 11.

13. A car, characterized in that: Comprising the inverter as claimed in claim 12.

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