Inverter and vehicle

Abstract

The utility model belongs to the technical field of inverters, and discloses an inverter and a vehicle, and the inverter comprises a housing, a filter, a capacitor, a high-voltage input connector, a power module, a first circuit board and a second circuit board, the first circuit board is integrated with a control circuit and a driving circuit of a power module, the second circuit board is integrated with a low-voltage signal connector, is in communication connection with the first circuit board and is overlapped with the first circuit board, and the vehicle comprises the inverter. According to the utility model, the filter and the capacitor are installed on the housing through the pouring sealant, integration is realized, the first circuit board is integrated with the control circuit and the driving circuit of the power module, the first circuit board and the second circuit board are superposed, and the second circuit board is integrated with the low-voltage signal connector matched with the interface of the whole vehicle. And the space in the thickness direction of the inverter is utilized more efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, and particularly relates to an inverter and a vehicle. Background Art

[0002] In an electric vehicle, an inverter generally includes two main functions: an inversion function and a rectification function. The inversion function is to convert the high-voltage direct current input by the battery into three-phase alternating current to drive the motor to rotate, and the rectification function is to convert the three-phase alternating current generated by the range extender driving the generator into high-voltage direct current to supply power to the battery for charging or directly supply power to drive the motor to rotate.

[0003] Since the inverter needs to have both the inversion function and the rectification function at the same time, the structure of the inverter assembled in the existing electric vehicle is complex, has many components, high manufacturing cost, and large size. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an inverter and a vehicle, which have a simple structure, fewer components, low manufacturing cost, and small size.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An inverter, comprising:

[0007] A housing;

[0008] A filter, installed in the housing through potting glue;

[0009] A capacitor, electrically connected to the filter and installed in the housing through potting glue;

[0010] A high-voltage input connector, electrically connected to the filter and installed in the housing;

[0011] A power module, electrically connected to the capacitor;

[0012] A first circuit board, integrated with a control circuit and a drive circuit of the power module, installed in the housing and electrically connected to the power module;

[0013] A second circuit board, integrated with a low-voltage signal connector, the second circuit board is communicatively connected to the first circuit board and stacked in the thickness direction of the inverter.

[0014] Preferably, the electrical connection copper bar between the filter and the capacitor is connected by welding.

[0015] Preferably, the electrical connection part between the filter and the capacitor is encapsulated by potting glue.

[0016] Preferably, part of the structure of the filter is potted and encapsulated and / or the capacitor is completely potted and encapsulated.

[0017] Preferably, the housing is provided with a first retaining wall, and the high-voltage input connector and the filter are located on both sides of the first retaining wall; and / or

[0018] The housing is provided with a second retaining wall, and the second retaining wall surrounds the outer periphery of the second circuit board.

[0019] Preferably, the first circuit board is provided with a first connector, the second circuit board is provided with a second connector, and the first circuit board and the second circuit board are communicatively connected through the mutually inserted first connector and second connector.

[0020] Preferably, the housing is provided with a third retaining wall, and the low-voltage signal connector and the second connector are located on both sides of the third retaining wall.

[0021] Preferably, the second circuit board is integrated with a port filtering circuit, and the port filtering circuit is used for filtering low-voltage signals.

[0022] Preferably, the housing is provided with a fourth retaining wall, and the control circuit and the drive circuit of the power module are located on both sides of the fourth retaining wall.

[0023] Preferably, in the thickness direction of the inverter, the control circuit faces the second circuit board.

[0024] Preferably, each three-phase bridge arm of the power module is provided with a first input copper busbar, and the connection surface of the first input copper busbar is parallel to the thickness direction of the inverter;

[0025] The capacitor has a first output copper busbar, the connection surface of the first output copper busbar is parallel to the thickness direction of the inverter, and the connection surface of the first output copper busbar and the connection surface of the first input copper busbar are abutted and welded together.

[0026] Preferably, each three-phase bridge arm of the power module is provided with a second input copper busbar, the connection surface of the second input copper busbar is perpendicular to the thickness direction of the inverter, and the capacitor has a second output copper busbar, and the connection surface of the second output copper busbar is parallel to the thickness direction of the inverter;

[0027] The second output copper busbar and the second input copper busbar are connected through a transition copper busbar. One connection surface of the transition copper busbar abuts against and is welded to the connection surface of the second output copper busbar, and the other connection surface of the transition copper busbar abuts against and is welded to the connection surface of the second input copper busbar.

[0028] Preferably, the housing is provided with a water pipe fixing part and / or a first wire harness fixing part.

[0029] Preferably, it further includes an outer housing which covers the outside of the filter and the capacitor and is connected to the housing. Part of the high-voltage input connectors are located outside the outer housing, and part of the high-voltage input connectors extend into the outer housing.

[0030] Preferably, the outer housing is provided with an air filter fixing part and / or a second wire harness fixing part.

[0031] A vehicle, including a vehicle body and the above-mentioned inverter, and the inverter is installed on the vehicle body.

[0032] Advantages of the present utility model:

[0033] The filter and the capacitor are respectively installed on the housing through potting glue, thus canceling their respective outer plastic shell structures and fixing screws for fixing to the housing, achieving integration, meeting the design requirements such as heat dissipation, insulation, and moisture protection of the filter and capacitor cores. The first circuit board integrates a control circuit and a driving circuit of a power module, eliminating the inter-board connection structure and parts between the control board and the driving board. And in the thickness direction of the inverter, the first circuit board and the second circuit board are stacked. A low-voltage signal connector matching the vehicle interface is integrated on the second circuit board, making more efficient use of the space in the thickness direction of the inverter. Thus, the structure is simplified as a whole, the number of parts is reduced, the manufacturing cost is lowered, and the volume is reduced. Description of the drawings

[0034] Figure 1 is a schematic structural diagram of the inverter according to an embodiment of the present utility model;

[0035] Figure 2 is a schematic structural diagram of the inverter according to an embodiment of the present utility model with the outer housing omitted;

[0036] Figure 3 is a schematic structural diagram of the inverter according to an embodiment of the present utility model with the outer housing and potting glue omitted;

[0037] Figure 4 is a schematic structural diagram of the cooperation between the housing, the first circuit board and the second circuit board according to an embodiment of the present utility model;

[0038] Figure 5 is a disassembled structural schematic diagram of the housing and the second circuit board according to an embodiment of the present utility model Figure 1 ;

[0039] Figure 6 is a disassembled structural schematic diagram of the housing and the second circuit board according to an embodiment of the present utility model Figure 2 ;

[0040] Figure 7 It is a schematic diagram of the structure of the first output copper bar, the second output copper bar, the first input copper bar, the second input copper bar and the transfer copper bar in the embodiment of the utility model;

[0041] Figure 8 It is a schematic structural diagram of the coordination of the first output copper bar, the second output copper bar, the first input copper bar and the second input copper bar described in an embodiment of the utility model.

[0042] In the figure:

[0043] 1. Shell; 11. First retaining wall; 12. Second retaining wall; 13. Third retaining wall; 14. Fourth retaining wall; 15. Water pipe fixing part; 16. First wire harness fixing part;

[0044] 2. Filter;

[0045] 3. Capacitor; 31. First output copper busbar; 32. Second output copper busbar;

[0046] 4. High voltage input connector;

[0047] 5. Power module; 51. First input copper busbar; 52. Second input copper busbar;

[0048] 6. a first circuit board; 61. a first connector;

[0049] 7. Second circuit board; 71. Low voltage signal connector; 72. Second connector;

[0050] 8. Transfer copper busbar;

[0051] 9. Outer cover shell; 91. Air filter fixing portion; 92. Second wiring harness fixing portion. DETAILED DESCRIPTION

[0052] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0053] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the description of the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0055] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0056] As Figures 1 - 8 shown, the present utility model provides an inverter, which includes a housing 1, a filter 2, a capacitor 3, a high-voltage input connector 4, a power module 5, a first circuit board 6 and a second circuit board 7. Among them, the filter 2 and the capacitor 3 are both installed in the housing 1 through potting glue, the high-voltage input connector 4, the first circuit board 6 and the second circuit board 7 are respectively installed on the housing 1, the capacitor 3 and the high-voltage input connector 4 are respectively electrically connected to the filter 2, the power module 5 is installed on the first circuit board 6 and is electrically connected to the capacitor 3, the first circuit board 6 integrates a control circuit and a driving circuit of the power module 5 and is electrically connected to the power module 5, the second circuit board 7 integrates a low-voltage signal connector 71, the second circuit board 7 and the first circuit board 6 are communicatively connected and are stacked in the thickness direction of the inverter.

[0057] In the present utility model, the filter 2 and the capacitor 3 are respectively installed on the housing 1 through potting glue, thereby canceling their respective outer plastic shell structures and fixing screws for fixing to the housing 1, realizing integration, meeting the design requirements such as heat dissipation, insulation, and moisture protection of the filter 2 and the capacitor 3 cores. The first circuit board 6 integrates a control circuit and a driving circuit of the power module 5, eliminating the inter-board connection structure and components between the control board and the driving board. Moreover, in the thickness direction of the inverter, the first circuit board 6 and the second circuit board 7 are stacked. The second circuit board 7 integrates a low-voltage signal connector 71 that cooperates with the vehicle interface, making more efficient use of the space in the thickness direction of the inverter, thereby simplifying the structure as a whole, reducing the number of components, lowering the manufacturing cost, and reducing the volume.

[0058] In this embodiment, four independent components, namely, the housing 1, the filter 2, the capacitor 3 and the high-voltage input connector 4, are encapsulated into a whole by epoxy potting glue, thereby realizing the integration of high-voltage DC components. The filter 2 and the capacitor 3 eliminate auxiliary materials such as the traditional filter plastic case, capacitor plastic case, Y capacitor plastic case, fixing screws, heat dissipation substrate, thermal grease, etc., and are directly potted and fixed by epoxy resin, thereby meeting the key design requirements of heat dissipation, insulation, moisture-proof, etc. of the core of the filter 2 and the capacitor 3. The second circuit board 7 is located between the housing 1 and the first circuit board 6, which is convenient for the connection and assembly of the low-voltage signal connector 71 with other components.

[0059] In other embodiments, according to actual use requirements, potting glue with polyester resin, vinyl ester or other types of thermosetting resin as the main material can be used for potting packaging, and the second circuit board 7 can also be located on the side of the first circuit board 6 away from the shell 1.

[0060] Specifically, the electrical connection copper bars between the filter 2 and the capacitor 3 are connected by welding. The positive and negative copper bars between the filter 2 and the capacitor 3 are connected by welding, eliminating the need for fixing screws and simplifying the design of the scheme.

[0061] In this embodiment, the positive and negative copper bars between the filter 2 and the capacitor 3 are connected by laser welding, which improves the effect and reliability of the connection assembly. In other embodiments, the positive and negative copper bars between the filter 2 and the capacitor 3 can also be electrically connected by resistance welding.

[0062] More specifically, the electrical connection between the filter 2 and the capacitor 3 is encapsulated by potting. In the prior art, plastic insulating parts need to be designed between the positive and negative copper bars and the housing 1 due to electrical safety requirements. The electrical connection between the filter 2 and the capacitor 3 is encapsulated by potting, eliminating the plastic insulating seat, and when epoxy potting glue is used for packaging, the epoxy potting glue has a high dielectric strength, and the nominal design gap between the copper bar and the housing 1 can be further reduced, and the volume of the electric control can be further reduced.

[0063] Specifically, part of the structure of the filter 2 is potted and encapsulated. The filter 2 is partially potted in the housing 1, which efficiently and reliably ensures key design requirements such as heat dissipation and insulation.

[0064] More specifically, the capacitor 3 is completely potted and encapsulated to ensure moisture-proof requirements after the core is durable.

[0065] In this embodiment, the high-voltage input connector 4 is electrically connected to the filter 2 via screws, which makes assembly and disassembly more convenient and reduces the cost.

[0066] In other embodiments, the high-voltage input connector 4 and the filter 2 can also be electrically connected by laser welding or resistance welding. The potting volume of the filter 2 and the capacitor 3 can also be set according to actual usage requirements, and it can be fully potted or partially potted.

[0067] Specifically, the housing 1 is provided with a first retaining wall 11, and the high-voltage input connector 4 and the filter 2 are located on both sides of the first retaining wall 11. By providing the first retaining wall 11, it is ensured that the potting glue will not penetrate into the high-voltage connector and affect its sealing and electrical contact performance.

[0068] More specifically, the housing 1 is provided with a second retaining wall 12, and the second retaining wall 12 surrounds the outer periphery of the second circuit board 7. By providing a 360° fully enclosed second retaining wall 12 on the side of the second circuit board 7 facing away from the first circuit board 6, the crosstalk signals introduced by the outside world through the low-voltage signal connector 71 can be isolated within the enclosed space formed by the second circuit board 7 and the housing 1, reducing its signal interference on the power module 5 and the first circuit board 6.

[0069] In this embodiment, the first retaining wall 11 extends between the filter 2 and the capacitor 3, thereby reducing the signal interference of the high-voltage input loop on the capacitor 3.

[0070] Specifically, the first circuit board 6 is provided with a first connector 61, and the second circuit board 7 is provided with a second connector 72. The first circuit board 6 and the second circuit board 7 are communicatively connected through the mutually inserted first connector 61 and second connector 72. The communication connection between the first circuit board 6 and the second circuit board 7 through the male-female B2B connector further improves the compactness of the electric control structure design, reduces the volume and weight of the electric control.

[0071] In this embodiment, the first connector 61 is a male connector, the second connector 72 is a female connector, the first circuit board 6 and the second circuit board 7 are parallel and spaced apart from each other, and both are perpendicular to the thickness direction of the inverter. The first connector 61 and the second connector 72 are located between the first circuit board 6 and the second circuit board 7, and the insertion direction of the first connector 61 and the second connector 72 is parallel to the thickness direction of the inverter.

[0072] In other embodiments, it can also be that the first connector 61 is a female connector and the second connector 72 is a male connector, and the insertion direction of the first connector 61 and the second connector 72 can also be set at any other angle with respect to the thickness direction of the inverter according to design requirements.

[0073] Specifically, the housing 1 is provided with a third retaining wall 13, and the low-voltage signal connector 71 and the second connector 72 are located on both sides of the third retaining wall 13. The above setting reduces the interference of external interference signals on the B2B connector through the low-voltage signal connector 71.

[0074] More specifically, the second circuit board 7 is integrated with a port filtering circuit for filtering low-voltage signals.

[0075] In this embodiment, the port filtering circuit is arranged adjacent to the low-voltage signal connector 71, making the filtering design of low-voltage signals more targeted.

[0076] Specifically, the housing 1 is provided with a fourth retaining wall 14, and the control circuit and the drive circuit of the power module 5 are located on both sides of the fourth retaining wall 14. The fourth retaining wall 14 is used to compartmentalize and isolate the control circuit on the first circuit board 6 from the drive circuit of the power module 5.

[0077] More specifically, in the thickness direction of the inverter, the control circuit faces the second circuit board 7. Such an arrangement makes it more convenient to arrange the fourth retaining wall 14, thereby enabling more reliable compartmentalization and isolation between the control circuit and the drive circuit of the power module 5.

[0078] In this embodiment, as Figure 4 shown, the control circuit facing the second circuit board 7 means that in the thickness direction of the inverter, the control circuit is located directly above the second circuit board 7. Due to the layout design, the third retaining wall 13 can be a part of the second retaining wall 12. By providing the first retaining wall 11, the second retaining wall 12, the third retaining wall 13, and the fourth retaining wall 14 on the housing 1, it is possible to meet the vehicle EMC (Electro Magnetic Compatibility) requirements only through the optimized design of the compartmentalizing retaining walls of the housing structure without introducing and adding additional parts such as shielding covers.

[0079] Specifically, the three-phase bridge arms of the power module 5 are each provided with a first input copper busbar 51, and the connecting surface of the first input copper busbar 51 is parallel to the thickness direction of the inverter. The capacitor 3 has a first output copper busbar 31, and the connecting surface of the first output copper busbar 31 is parallel to the thickness direction of the inverter. The connecting surface of the first output copper busbar 31 abuts against and is welded to the connecting surface of the first input copper busbar 51. Such an arrangement reduces the distance between the first output copper busbar 31 and the first input copper busbar 51, significantly reducing the parasitic inductance of the connection loop system.

[0080] More specifically, the three-phase bridge arms of the power module 5 are all provided with second input copper bars 52. The connection surface of the second input copper bar 52 is perpendicular to the thickness direction of the inverter. The capacitor 3 has a second output copper bar 32. The connection surface of the second output copper bar 32 is parallel to the thickness direction of the inverter. The second output copper bar 32 and the second input copper bar 52 are connected by a transition copper bar 8. One connection surface of the transition copper bar 8 abuts against the connection surface of the second output copper bar 32 and is welded and connected. The other connection surface of the transition copper bar 8 abuts against the connection surface of the second input copper bar 52 and is welded and connected. With the above arrangement, the distance between the second output copper bar 32 and the second input copper bar 52 is reduced, and the parasitic inductance of the connection loop system is greatly reduced.

[0081] In this embodiment, the first input copper bar 51 and the second input copper bar 52 of the power module 5 are customized with laser welding interfaces. The first input copper bar 51 and the second input copper bar 52 are positive and negative copper bars respectively, and their relative positions are arranged at 90°. Each three-phase bridge arm of the power module 5 has a set of first input copper bar 51 and second input copper bar 52. The first output copper bar 31 and the second output copper bar 32 of the capacitor 3 are positive and negative copper bars respectively, and are arranged along the thickness direction of the inverter in terms of structure, parallel to the first input copper bar 51 of the power module 5 respectively and having a certain gap with the first input copper bar 51. After the power module 5 is installed in place along the thickness direction of the inverter, the first output copper bar 31 is pressed onto the first input copper bar 51 in the direction perpendicular to the thickness direction of the inverter for laser welding. The laser welding seam hardly occupies the space in the direction perpendicular to the thickness direction of the inverter. Therefore, in terms of structure, it can be ensured that the distance between the transition copper bar 8 and the first input copper bar 51 and the first output copper bar 31 is close enough, so that the parasitic inductance of the connection loop system is greatly reduced; similarly, after the first output copper bar 31 and the first input copper bar 51 are welded, the transition copper bar 8 is assembled along the thickness direction of the inverter, and the transition copper bar 8 is pressed and laser welded respectively from the thickness direction of the inverter and the direction perpendicular to the thickness direction of the inverter. Through the above structure, a fully laminated copper bar connection structure and solution from the output of the capacitor 3 to the input side of the power module 5 are realized. Compared with the traditional screw connection solution, the parasitic inductance of the electrical connection path system on the input side of the power module 5 of the present invention is expected to be reduced by more than 60%, greatly improving the working efficiency of the dual-electronic control drive and power generation, increasing the battery endurance mileage and reducing the fuel consumption of the range extender, and effectively enhancing the product competitiveness.

[0082] Specifically, the housing 1 is provided with a water pipe fixing part 15 and / or a first wire harness fixing part 16, so as to facilitate the fixing of the vehicle water pipe and the vehicle wire harness.

[0083] In this embodiment, the housing 1 is provided with a water pipe fixing part 15 and a first wire harness fixing part 16. The water pipe fixing part 15 and the first wire harness fixing part 16 are boss structures.

[0084] Specifically, the inverter further includes an outer housing 9 which covers the outside of the filter 2 and the capacitor 3 and is connected to the housing 1. Part of the high-voltage input connector 4 is located outside the outer housing 9, and part of the high-voltage input connector 4 extends into the outer housing 9. By providing the outer housing 9, the filter 2 and the capacitor 3 can be effectively protected.

[0085] More specifically, the outer housing 9 is provided with an air filter fixing part 91 and / or a second wire harness fixing part 92, so as to facilitate the fixing of the vehicle air filter and the vehicle wire harness.

[0086] In this embodiment, the outer housing 9 is provided with an air filter fixing part 91 and a second wire harness fixing part 92, and the air filter fixing part 91 and the second wire harness fixing part 92 are in the form of boss structures.

[0087] In this embodiment, the filter 2, the capacitor 3 and the high-voltage input connector 4 are installed on one side of the housing 1, the first circuit board 6 and the second circuit board 7 are installed on the other side of the housing 1, the water pipe fixing part 15, the first wire harness fixing part 16, the air filter fixing part 91 and the second wire harness fixing part 92 are located on the same side of the housing 1, and connection holes are respectively provided thereon. The fastening members installed in the connection holes are used to realize the fixed connection with the corresponding vehicle components. For the vehicle components, the fixation of the relevant components can be completed without introducing other auxiliary fixing parts, making the layout of the vehicle components more flexible, with a higher integration degree, a reduced number of vehicle auxiliary fixing parts and a smaller occupied volume, thereby reducing the cost, increasing the use space of the passenger compartment, and enhancing the product competitiveness.

[0088] The present utility model further provides a vehicle, which includes a vehicle body and the above-mentioned inverter. The inverter is installed on the vehicle body, the vehicle water pipe is fixed to the water pipe fixing part 15, the vehicle wire harness is fixed to the first wire harness fixing part 16 and the second wire harness fixing part 92, and the vehicle air filter is fixed to the air filter fixing part 91.

[0089] In the inverter of the vehicle of the present utility model, the filter 2 and the capacitor 3 are respectively installed on the housing 1 through potting glue, thereby canceling their respective outer plastic shell structures and the fixing screws for fixing to the housing 1, achieving integration, meeting the design requirements such as heat dissipation, insulation, and moisture protection of the cores of the filter 2 and the capacitor 3. The first circuit board 6 integrates a control circuit and a driving circuit of the power module 5, eliminating the board-to-board connection structure and parts between the control board and the driving board. Moreover, in the thickness direction of the inverter, the first circuit board 6 and the second circuit board 7 are stacked, and a low-voltage signal connector 71 matching the vehicle interface is integrated on the second circuit board 7, making more efficient use of the space in the thickness direction of the inverter, thereby simplifying the structure as a whole, reducing the number of components, lowering the manufacturing cost, and reducing the volume.

[0090] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An inverter, characterized in that: include: Housing (1); A filter (2) is mounted on the housing (1) by means of a potting compound; A capacitor (3) is electrically connected to the filter (2) and is mounted on the housing (1) via a potting compound; A high-voltage input connector (4), electrically connected to the filter (2) and mounted on the housing (1); A power module (5), electrically connected to the capacitor (3); A first circuit board (6) integrating a control circuit and a drive circuit of the power module (5), mounted on the housing (1), and electrically connected to the power module (5); The second circuit board (7) is integrated with a low-voltage signal connector (71); the second circuit board (7) is communicatively connected to the first circuit board (6) and is stacked in the thickness direction of the inverter.

2. The inverter according to claim 1, characterized in that: The electrical connection copper busbars between the filter (2) and the capacitor (3) are connected by welding.

3. The inverter according to claim 1, characterized in that: The electrical connection between the filter (2) and the capacitor (3) is packaged by glue potting.

4. The inverter according to claim 1, characterized in that: Part of the structure of the filter (2) is encapsulated by glue potting and / or the capacitor (3) is completely encapsulated by glue potting.

5. The inverter according to claim 1, characterized in that: The housing (1) is provided with a first retaining wall (11), and the high-voltage input connector (4) and the filter (2) are located on both sides of the first retaining wall (11); and / or The housing (1) is provided with a second retaining wall (12), and the second retaining wall (12) is arranged around the outer periphery of the second circuit board (7).

6. The inverter according to claim 1, characterized in that: The first circuit board (6) is provided with a first connector (61), and the second circuit board (7) is provided with a second connector (72); the first circuit board (6) and the second circuit board (7) are communicatively connected via the first connector (61) and the second connector (72) which are plugged into each other.

7. The inverter according to claim 6, characterized in that: The housing (1) is provided with a third retaining wall (13), and the low-voltage signal connector (71) and the second connector (72) are located on both sides of the third retaining wall (13).

8. The inverter according to claim 1, characterized in that: The second circuit board (7) is integrated with a port filter circuit, and the port filter circuit is used to filter the low-voltage signal.

9. The inverter according to claim 1, characterized in that: The housing (1) is provided with a fourth retaining wall (14), and the control circuit and the drive circuit of the power module (5) are located on both sides of the fourth retaining wall (14).

10. The inverter according to claim 1, characterized in that: In the thickness direction of the inverter, the control circuit faces the second circuit board (7).

11. The inverter according to claim 1, characterized in that: The three-phase bridge arms of the power module (5) are each provided with a first input copper busbar (51), the connection surface of the first input copper busbar (51) being parallel to the thickness direction of the inverter; the capacitor (3) has a first output copper busbar (31), the connection surface of the first output copper busbar (31) being parallel to the thickness direction of the inverter; The connection surface of the first output copper busbar (31) and the connection surface of the first input copper busbar (51) are abutted against each other and connected by welding.

12. The inverter according to claim 11, characterized in that: The three-phase bridge arms of the power module (5) are each provided with a second input copper busbar (52), the connection surface of the second input copper busbar (52) being perpendicular to the thickness direction of the inverter, and the capacitor (3) has a second output copper busbar (32), the connection surface of the second output copper busbar (32) being parallel to the thickness direction of the inverter; The second output copper bar (32) and the second input copper bar (52) are connected via a transfer copper bar (8), one connection surface of the transfer copper bar (8) abuts against and is welded to a connection surface of the second output copper bar (32), and the other connection surface of the transfer copper bar (8) abuts against and is welded to a connection surface of the second input copper bar (52).

13. The inverter according to claim 1, characterized in that: The housing (1) is provided with a water pipe fixing portion (15) and / or a first wire harness fixing portion (16).

14. The inverter according to any one of claims 1 to 13, characterized in that: It also comprises an outer cover shell (9), which is arranged on the outside of the filter (2) and the capacitor (3) and is connected to the housing (1), and part of the high-voltage input connector (4) is located on the outside of the outer cover shell (9), and part of the high-voltage input connector (4) extends into the outer cover shell (9).

15. The inverter according to claim 14, characterized in that: The outer cover shell (9) is provided with an air filter fixing portion (91) and / or a second wire harness fixing portion (92).

16. A vehicle, characterized in that It comprises a vehicle body and the inverter according to any one of claims 1 to 15, wherein the inverter is mounted on the vehicle body.

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