Inverter and vehicle

Abstract

The inverter comprises a housing, a first metal plate and an electric control assembly, the first metal plate is arranged in the housing, an inner cavity of the housing is divided into a first chamber and a second chamber by the first metal plate, the electric control assembly comprises a low-voltage signal connector and a first high-voltage device, the first high-voltage device is arranged in the second chamber, and the second high-voltage device is arranged in the second chamber. The low-voltage signal connector is installed on the shell, and at least part of the low-voltage signal connector is located in the first cavity. The inverter provided by the utility model has the advantages of good EMC performance, high inverter functionality and high safety.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to an inverter and a vehicle. Background Technology

[0002] Automotive dual inverters typically include two main functions: inverter function, which converts the high-voltage DC power input from the battery into three-phase AC power to drive the motor; and rectification function, which converts the three-phase AC power generated by the range extender-driven generator into high-voltage DC power to charge the battery or directly power the drive motor. The communication structure between the vehicle controller and the dual inverters is usually achieved through the mating of male and female low-voltage signal connectors. However, in related technologies, the low-voltage signal connectors on the inverter are often located in the same mounting cavity as the high-voltage components, directly exposing the low-voltage signal connectors to the high-voltage environment inside the inverter. This leads to crosstalk from high-voltage interference signals to the low-voltage signal connectors, resulting in poor EMC performance, and reduced functionality and safety of the inverter. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose an inverter that has the advantages of good EMC performance, high inverter functionality and safety.

[0005] An embodiment of this utility model also proposes a vehicle.

[0006] The inverter of this utility model embodiment includes a housing, a first metal plate, and an electronic control assembly. The first metal plate is disposed inside the housing and divides the inner cavity of the housing into a first chamber and a second chamber. The electronic control assembly includes a low-voltage signal connector and a first high-voltage device. The low-voltage signal connector is mounted on the housing, and at least a portion of the low-voltage signal connector is located in the first chamber.

[0007] According to the inverter of this utility model embodiment, the first metal plate divides the inner cavity of the housing into a first chamber and a second chamber, and the first high-voltage device and the low-voltage signal connector are respectively disposed in the second chamber and the first chamber. With the obstruction of the first metal plate, the signal interference of the first high-voltage device to the low-voltage signal connector is effectively reduced or avoided, so that the inverter has high functionality and safety.

[0008] In some embodiments, the electronic control component further includes a first rigid circuit board and a second rigid circuit board, the first rigid circuit board being disposed in the first cavity, the low-voltage signal connector being electrically connected to the first rigid circuit board, and the first rigid circuit board being provided with a first connector.

[0009] The second rigid circuit board is disposed in the second cavity, and the second rigid circuit board is provided with a second connector. The first high voltage device is electrically connected to the second rigid circuit board.

[0010] The inverter further includes a flexible circuit board and a metal shielding layer covering the surface of the flexible circuit board. The first metal plate is provided with a through hole connecting the first chamber and the second chamber. The first end of the flexible circuit board is inserted and engaged with the first connector, and the second end of the flexible circuit board passes through the through hole and is inserted and engaged with the second connector.

[0011] In some embodiments, the second rigid circuit board is spaced apart from the first metal plate, the second rigid circuit board is provided with an MCU chip, and the first high-voltage device is located on the side of the second rigid circuit board facing the first metal plate.

[0012] The inverter also includes a shield, which is connected to the second rigid circuit board and covers the MCU chip. The first high-voltage device is spaced apart from the MCU chip and is located outside the shield.

[0013] In some embodiments, the inverter further includes a second high-voltage device and a second metal plate disposed in the first chamber, the second metal plate dividing the first chamber into a first sub-chamber and a second sub-chamber, the first rigid circuit board being disposed in the first sub-chamber, and the second high-voltage device being disposed in the second sub-chamber.

[0014] In some embodiments, the first rigid circuit board divides the first compartment into a third compartment and a fourth compartment, the low-voltage signal connector is mounted on the housing corresponding to the third compartment, and the at least part of the low-voltage signal connector is located within the third compartment;

[0015] The first connector is disposed on the edge of the first rigid circuit board, and the inverter further includes a third metal plate disposed in the third compartment, the third metal plate separating the first connector and the low-voltage signal connector.

[0016] In some embodiments, the inverter further includes a first conductive rubber pad sandwiched between the first rigid circuit board and the third metal plate, wherein the pads on the first rigid circuit board are electrically connected to the third metal plate through the first conductive rubber pad.

[0017] In some embodiments, the pins in the low-voltage signal connector for electrical connection with the first rigid circuit board pass through the first rigid circuit board and are exposed in the fourth cavity;

[0018] The inverter also includes a fourth metal plate disposed in the fourth compartment, the fourth metal plate separating the pin from the electrical components on the first rigid circuit board.

[0019] In some embodiments, the inverter further includes a second conductive rubber pad sandwiched between the first rigid circuit board and the fourth metal plate, wherein the pads on the first rigid circuit board are electrically connected to the fourth metal plate through the second conductive rubber pad.

[0020] In some embodiments, the housing further includes an inverter housing and a reducer housing connected together, the first metal plate is connected to the inverter housing, and the first metal plate, the inverter housing and the reducer housing together define the first chamber;

[0021] The second metal plate, the third metal plate, and the fourth metal plate are connected to at least one of the inverter housing and the reducer housing.

[0022] The vehicle according to an embodiment of the present invention includes an inverter as described in any of the above embodiments.

[0023] The technical advantages of the vehicle according to this utility model embodiment are the same as the technical advantages of the inverter in the above embodiment, and will not be repeated here. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an inverter according to an embodiment of the present utility model.

[0025] Figure 2 This is a partial schematic diagram of an inverter according to an embodiment of the present utility model.

[0026] Figure 3 This is another partial schematic diagram of an inverter according to an embodiment of the present utility model.

[0027] Figure 4 This is a schematic diagram of the reducer housing in an inverter according to an embodiment of the present utility model.

[0028] Figure 5 This is a schematic diagram of the second rigid circuit board and shielding cover in an inverter according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the flexible circuit board and metal shielding layer in an inverter according to an embodiment of the present invention.

[0030] Figure label:

[0031] 1. Inverter housing; 11. First metal plate; 12. Second metal plate; 13. Third metal plate; 2. Reducer housing; 21. Fourth metal plate; 3. First rigid circuit board; 4. Low-voltage signal connector; 5. Second rigid circuit board; 6. Second high-voltage device; 7. Flexible circuit board; 8. Metal shielding layer; 9. Shielding cover; 10. MCU chip; 110. Second conductive rubber gasket. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] The following is combined Figures 1-6 An inverter according to an embodiment of the present invention is described.

[0034] The inverter of this embodiment includes a housing, a first metal plate 11, and an electronic control assembly. The first metal plate 11 is disposed inside the housing and divides the inner cavity of the housing into a first chamber and a second chamber. The electronic control assembly includes a low-voltage signal connector 4 and a first high-voltage device. The first high-voltage device is disposed in the second chamber, and the low-voltage signal connector 4 is mounted on the housing, with at least a portion of the low-voltage signal connector 4 located in the first chamber.

[0035] According to the inverter of this utility model embodiment, the first metal plate 11 divides the inner cavity of the housing into a first chamber and a second chamber, and the first high-voltage device and the low-voltage signal connector 4 are respectively disposed in the second chamber and the first chamber. Under the obstruction of the first metal plate 11, the signal interference of the first high-voltage device to the low-voltage signal connector 4 is effectively reduced or avoided, so that the inverter has high functionality and safety.

[0036] It should be noted that the first metal plate 11 is made of the same material as the housing, namely cast aluminum alloy, which can effectively shield the high-voltage interference signal generated by the first high-voltage device. When the high-voltage interference signal generated by the first high-voltage device radiates towards the first chamber, it will first pass through the first metal plate 11. The first metal plate 11 effectively suppresses and attenuates electromagnetic radiation, so that the signal radiation that finally enters the first chamber is weak, and the signal interference to the low-voltage signal connector 4 is small. At the same time, the first metal plate 11 can be provided with through holes or notches connecting the first chamber and the second chamber. In this case, the first metal plate 11 can also suppress and attenuate some of the high-voltage signal radiation. In addition, the first rigid circuit board 3 and the subsequent second rigid circuit board 5 are both printed circuit boards.

[0037] In some embodiments, such as Figure 2 , Figure 3 and Figure 6As shown, the electronic control assembly also includes a first rigid circuit board 3 and a second rigid circuit board 5. The first rigid circuit board 3 is disposed in the first chamber, and a low-voltage signal connector 4 is electrically connected to the first rigid circuit board 3. A first connector is provided on the first rigid circuit board 3. The second rigid circuit board 5 is disposed in the second chamber, and a second connector is provided on the second rigid circuit board 5. A first high-voltage device is electrically connected to the second rigid circuit board 5. The inverter also includes a flexible circuit board 7 and a metal shielding layer 8 covering the surface of the flexible circuit board 7. A through hole is provided on the first metal plate 11 connecting the first chamber and the second chamber. The first end of the flexible circuit board 7 is inserted and engaged with the first connector, and the second end of the flexible circuit board 7 passes through the through hole and is inserted and engaged with the second connector.

[0038] The first rigid circuit board 3 and the second rigid circuit board 5 are both fixed to the first and second chambers respectively by threaded fittings. The low-voltage signal connector 4 is fixedly mounted on the first rigid circuit board 3 by soldering, and the first high-voltage device is fixedly mounted on the second rigid circuit board 5 by soldering. The first rigid circuit board 3 and the second rigid circuit board 5 serve as integrated circuit boards, achieving a high degree of circuit integration and avoiding the large space occupied by scattered circuits in the first and second chambers. Simultaneously, by fixing the first rigid circuit board 3 and the second rigid circuit board 5 to the first and second chambers respectively, the low-voltage signal connector 4 and the first high-voltage device do not need to be connected to the housing, thus improving the assembly efficiency of the inverter.

[0039] Compared to related technologies that use only one rigid circuit board, this embodiment splits the rigid circuit board into a first rigid circuit board 3, a flexible circuit board 7, and a second rigid circuit board 5, which are electrically connected in sequence. The first rigid circuit board 3 and the second rigid circuit board 5 are fixed in the first chamber and the second chamber, respectively, which facilitates the installation of the low-voltage signal connector 4 and the first high-voltage device in different chambers of the housing. In addition, the flexible circuit board 7 simplifies the wiring harness connection structure of the first rigid circuit board 3 and the second rigid circuit board 5, thereby effectively reducing the space occupied by the electronic control components in the housing. The cross-sectional size of the vias can be designed to be smaller, and the shielding effect of the first metal plate 11 on the high-voltage interference signal generated by the first high-voltage device is better. Moreover, the metal shielding layer 8 effectively prevents the high-voltage interference signal generated by the first high-voltage device from interfering with the flexible circuit board 7, further improving the functionality and safety of the inverter.

[0040] Specifically, the flexible circuit board 7 has gold fingers at both ends, one of which engages with a first connector on the first rigid circuit board 3, and the other engages with a second connector on the second rigid circuit board 5. The metal shielding layer 8 is made of, but is not limited to, aluminum or stainless steel.

[0041] In some embodiments, such as Figure 1and Figure 5 As shown, the second rigid circuit board 5 is spaced apart from the first metal plate 11. The second rigid circuit board 5 is equipped with an MCU chip 10, and the first high-voltage device is located on the side of the second rigid circuit board 5 facing the first metal plate 11. The inverter also includes a shield 9, which is connected to the second rigid circuit board 5 and covers the MCU chip 10. The first high-voltage device is spaced apart from the MCU chip 10 and is located on the outside of the shield 9.

[0042] The design of placing the MCU chip 10 on the second rigid circuit board 5 creates a certain distance between the MCU chip 10 and the first rigid circuit board 3. Compared to placing the MCU chip 10 on the second rigid circuit board 5, this allows for a greater distance between the MCU chip 10 and the low-voltage signal connector 4. With the separation provided by the first metal plate 11, external interference signals (signals generated when the high-voltage devices electrically connected to the low-voltage signal connector 4 operate) enter the first chamber via the low-voltage signal connector 4 and are suppressed and attenuated by the first metal plate 11. This results in weak signal radiation entering the second chamber, minimizing signal interference to the MCU chip 10. Furthermore, the design of the shielding cover 9 effectively prevents electromagnetic interference from the high-voltage interference signals generated by the first high-voltage devices, regardless of whether the MCU chip 10 is located on the side of the second rigid circuit board 5 facing the first metal plate 11 or on the side of the second rigid circuit board 5 away from the first metal plate 11. This further ensures the EMC (Electromagnetic Compatibility) performance of the inverter.

[0043] Specifically, EMC refers to electromagnetic compatibility, which includes ensuring that the electromagnetic interference generated by a product during normal operation does not exceed certain limits, and that the product has a certain degree of immunity to electromagnetic interference present in its environment. Shielding covers 9 include, but are not limited to, aluminum and stainless steel. For example... Figure 1 and Figure 5 As shown, the shielding cover 9 can be connected to the second rigid circuit board 5 via three fixing screws, or it can be connected to the housing via three fixing screws. For example, the fixing screws pass through the through holes on the shielding cover 9 and the second rigid circuit board 5 and are threaded into the threaded holes on the housing. The three fixing screws are arranged in a triangle. The edge of the shielding cover 9 is in close contact with the lower surface of the second rigid circuit board 5 to completely separate the MCU chip 10 from the first high-voltage device.

[0044] In some embodiments, such as Figure 3 As shown, the inverter also includes a second high-voltage device 6 and a second metal plate 12 disposed in the first chamber. The second metal plate 12 divides the first chamber into a first sub-chamber and a second sub-chamber. The first rigid circuit board 3 is disposed in the first sub-chamber, and the second high-voltage device 6 is disposed in the second sub-chamber.

[0045] In other words, all high-voltage components of the inverter are separated into a second high-voltage component 6 housed in the first chamber and a first high-voltage component housed in the second chamber. This means that not all high-voltage components are housed in the same chamber, allowing for flexible and convenient installation of each component within the housing. Furthermore, with the second high-voltage component 6 housed in the first chamber, a second metal plate 12 separates it from each of the first rigid circuit board 3 and the low-voltage signal connector 4. This effectively prevents the high-voltage interference signals generated by the second high-voltage component 6 from causing electromagnetic interference to the first rigid circuit board 3 and the low-voltage signal connector 4, further ensuring the inverter's EMC performance.

[0046] Specifically, the second high-voltage device 6 includes, but is not limited to, a filter capacitor and a three-phase high-voltage output port. The number of second sub-cavities can be one, two, or more. If there are two second sub-cavities, the filter capacitor and the three-phase high-voltage output port are located in two separate second sub-cavities to avoid mutual interference between them.

[0047] In some embodiments, such as Figure 3 As shown, the first rigid circuit board 3 divides the first compartment into a third compartment and a fourth compartment. The low-voltage signal connector 4 is mounted on the housing corresponding to the third compartment, and at least a portion of the low-voltage signal connector 4 is located within the third compartment. The first connector is disposed at the edge of the first rigid circuit board 3. The inverter also includes a third metal plate 13 disposed within the third compartment, which separates the first connector and the low-voltage signal connector 4.

[0048] At this time, the first connector is located in the third compartment. The first connector and the low-voltage signal connector 4 are separated by the third metal plate 13, which further prevents external interference signals (signals generated when the high-voltage device connected to the low-voltage signal connector 4 is working) from entering the third compartment through the line of the low-voltage signal connector 4 and causing signal interference to the flexible circuit board 7 and the MCU chip 10. The inverter has higher functionality and safety.

[0049] Specifically, the third cavity is located above the fourth cavity, and part of the flexible circuit board 7 is located inside the third cavity.

[0050] In some embodiments, the inverter further includes a first conductive rubber pad sandwiched between a first rigid circuit board 3 and a third metal plate 13, wherein the pads on the first rigid circuit board 3 are electrically connected to the third metal plate 13 through the first conductive rubber pad.

[0051] The pads on the first rigid circuit board 3 are electrically connected to the third metal plate 13 to ensure the grounding of the first rigid circuit board 3 and the stable operation of the inverter as a whole. The first conductive rubber gasket is elastically deformed and sandwiched between the pads of the first rigid circuit board 3 and the third metal plate 13 to eliminate the gap between the first rigid circuit board 3 and the third metal plate 13 caused by warping and deformation when the first rigid circuit board 3 is connected to the housing by screws. This ensures the reliability of the electrical connection between the pads and the third metal plate 13, the reliability of the grounding of the first rigid circuit board 3, and further improves the EMC performance of the inverter.

[0052] Specifically, the surface of the first conductive rubber pad is covered with a copper film, silver film, etc., and thus has conductive properties.

[0053] In some embodiments, such as Figure 3 and Figure 4 As shown, the pin in the low-voltage signal connector 4, which is used for electrical connection with the first rigid circuit board 3, passes through the first rigid circuit board 3 and is exposed in the fourth compartment. The inverter also includes a fourth metal plate 21 disposed in the fourth compartment, which separates the pin from the electrical components on the first rigid circuit board 3.

[0054] That is, the fourth metal plate 21 divides the fourth compartment into two compartments. The pin of the low-voltage signal connector 4 is located in one compartment, and the remaining electrical components (including the first connector) on the first rigid circuit board 3 are located in the other compartment. With the separation of the fourth metal plate 21, external interference signals are effectively prevented from entering the fourth compartment through the pin of the low-voltage signal connector 4 and causing EMC interference to the remaining electrical components on the first rigid circuit board 3. The inverter has higher functionality and safety.

[0055] In some embodiments, such as Figure 3 As shown, the inverter also includes a second conductive rubber pad 110, which is sandwiched between the first rigid circuit board 3 and the fourth metal plate 21. The pads on the first rigid circuit board 3 are electrically connected to the fourth metal plate 21 through the second conductive rubber pad 110.

[0056] The pads on the first rigid circuit board 3 are electrically connected to the fourth metal plate 21 to ensure the grounding of the first rigid circuit board 3 and the stable operation of the inverter as a whole. The second conductive rubber gasket 110 is elastically deformed and sandwiched between the pads of the first rigid circuit board 3 and the fourth metal plate 21 to eliminate the gap between the first rigid circuit board 3 and the fourth metal plate 21 caused by warping and deformation when the first rigid circuit board 3 is connected to the housing by screws. This ensures the reliability of the electrical connection between the pads and the fourth metal plate 21, the reliability of the grounding of the first rigid circuit board 3, and further improves the EMC performance of the inverter.

[0057] Specifically, the second conductive rubber pad 110 is made of the same material as the first conductive rubber pad, and the number of the second conductive rubber pad 110 and the number of the pads on the lower surface of the first rigid circuit board 3 corresponding to the fourth metal plate 21 are equal and correspond one-to-one.

[0058] In some embodiments, such as Figures 1-4 As shown, the housing also includes an inverter housing 1 and a reducer housing 2 connected together. A first metal plate 11 is connected to the inverter housing 1. The first metal plate 11, the inverter housing 1, and the reducer housing 2 together define a first chamber. Any one of the second metal plate 12, the third metal plate 13, and the fourth metal plate 21 is connected to at least one of the inverter housing 1 and the reducer housing 2.

[0059] For example, the first metal plate 11 is integrally formed or welded onto the inverter housing 1, and any one of the second metal plate 12, the third metal plate 13 and the fourth metal plate 21 is integrally formed or welded onto at least one of the inverter housing 1 and the reducer housing 2. All the above-mentioned chambers can be formed simply by connecting the inverter housing 1 and the reducer housing 2, which makes the inverter assembly less difficult and the assembly efficiency higher.

[0060] Specifically, such as Figure 3 and Figure 4 As shown, the first metal plate 11 and the third metal plate 13 are integrally formed with the inverter housing 1, a part of the second metal plate 12 is integrally formed with the inverter housing 1, and the remaining part of the second metal plate 12 and the fourth metal plate 21 are integrally formed with the reducer housing 2.

[0061] For example, the first metal plate 11 is detachably connected to the inverter housing 1 by fasteners, and any one of the second metal plate 12, the third metal plate 13 and the fourth metal plate 21 is detachably connected to at least one of the inverter housing 1 and the reducer housing 2 by fasteners, making it convenient to assemble and disassemble the inverter.

[0062] The vehicle according to the present invention includes an inverter as described in any of the above embodiments.

[0063] The technical advantages of the vehicle according to this utility model embodiment are the same as the technical advantages of the inverter in the above embodiment, and will not be repeated here.

[0064] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0067] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An inverter, characterized in that: include: case; a first metal plate, the first metal plate being disposed in the shell, and the first metal plate dividing the inner cavity of the shell into a first chamber and a second chamber; An electronic control component, the electronic control component includes a low-voltage signal connector and a first high-voltage device, the first high-voltage device is arranged in the second chamber, the low-voltage signal connector is installed on the shell, and at least part of the low-voltage signal connector is located in the first chamber.

2. The inverter according to claim 1, characterized in that: The electric control assembly further comprises a first rigid circuit board and a second rigid circuit board, the first rigid circuit board is arranged in the first chamber, the low voltage signal connector is electrically connected to the first rigid circuit board, and the first rigid circuit board is provided with a first connector; The second rigid circuit board is arranged in the second chamber, a second connector is arranged on the second rigid circuit board, and the first high-voltage device is electrically connected to the second rigid circuit board; The inverter also includes a flexible circuit board and a metal shielding layer coated on the surface of the flexible circuit board. The first metal plate is provided with a via hole connecting the first cavity and the second cavity. The first end of the flexible circuit board is plugged into the first connector, and the second end of the flexible circuit board passes through the via hole and is plugged into the second connector.

3. The inverter according to claim 2, characterized in that: The second rigid circuit board is spaced apart from the first metal plate, an MCU chip is arranged on the second rigid circuit board, and the first high-voltage device is located on a side of the second rigid circuit board facing the first metal plate; The inverter further includes a shielding cover, which is connected to the second rigid circuit board and covers the MCU chip. The first high-voltage device is separated from the MCU chip and is located outside the shielding cover.

4. The inverter according to claim 2, characterized in that: The inverter also includes a second high-voltage device and a second metal plate disposed in the first chamber, the second metal plate divides the first chamber into a first sub-chamber and a second sub-chamber, the first hard circuit board is disposed in the first sub-chamber, and the second high-voltage device is disposed in the second sub-chamber.

5. The inverter according to claim 4, characterized in that: The first rigid circuit board divides the first sub-chamber into a third sub-chamber and a fourth sub-chamber, the low-voltage signal connector is mounted on the housing corresponding to the third sub-chamber, and at least a portion of the low-voltage signal connector is located in the third sub-chamber; The first connector is arranged at the edge of the first rigid circuit board. The inverter further comprises a third metal plate arranged in the third sub-cavity. The third metal plate separates the first connector and the low-voltage signal connector.

6. The inverter according to claim 5, characterized in that: The inverter further includes a first conductive rubber gasket, which is sandwiched between the first rigid circuit board and the third metal plate, and the pad on the first rigid circuit board is electrically connected to the third metal plate through the first conductive rubber gasket.

7. The inverter according to claim 5, characterized in that: The pin in the low-voltage signal connector for electrically connecting to the first rigid circuit board passes through the first rigid circuit board and is exposed in the fourth sub-cavity; The inverter further includes a fourth metal plate disposed in the fourth sub-cavity, and the fourth metal plate separates the pin from the electrical components on the first rigid circuit board.

8. The inverter according to claim 7, characterized in that: The inverter further includes a second conductive rubber gasket, which is sandwiched between the first rigid circuit board and the fourth metal plate, and the pad on the first rigid circuit board is electrically connected to the fourth metal plate through the second conductive rubber gasket.

9. The inverter according to claim 8, characterized in that: The housing further includes an inverter housing and a reducer housing connected to each other, the first metal plate is connected to the inverter housing, and the first metal plate, the inverter housing and the reducer housing jointly define the first chamber; Any one of the second metal plate, the third metal plate, and the fourth metal plate is connected to at least one of the inverter case and the reducer case.

10. A vehicle, characterized in that: Comprising the inverter as described in any one of claims 1 to 9.

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