CN218041107U - High-performance integrated miniaturized inverter system - Google Patents

Abstract

The utility model relates to a high-performance integrated miniaturized inverter system, which comprises an end cover component, a sealing cover and an internal device, wherein one side of the end cover component is connected with the sealing cover, and the other side is used for connecting a driving motor; the end cover component is of a disc type inner cavity structure, and the internal device is arranged in the end cover component; the internal device comprises a PCBA assembly, an input suppression device, a support capacitor, an IGBT module, an output suppression device and a position sensor, wherein the PCBA assembly is electrically connected with the input suppression device, the support capacitor, the IGBT module, the output suppression device and the position sensor respectively. Compared with the prior art, the utility model discloses the integrated level is higher, assembly space utilization is higher, and can ensure the stability and the reliability of contravariant system operation.

Description

High-performance integrated miniaturized inverter system

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a miniaturized contravariant system of high performance integration is related to.

Background

With the continuous development of new energy automobiles, the requirements of the whole automobile on a driving motor inversion control system are higher and higher, the requirements on miniaturization and integration are stricter and stricter, and the requirements on higher electromagnetic shielding performance are also stricter and stricter.

The integration scheme of the inverter system of the new energy automobile on the market at present is that a mounting support leg is usually arranged on a drive motor shell, and the motor inverter system is fixed on the motor shell through a fastening piece, so that the integration and miniaturization level of the inverter system cannot be really and effectively improved essentially by the physical integration mode, and the physical integration mode also faces modal differences, so that the corresponding structural resonance problem is brought to the whole inverter system, abnormal noise can be generated, and the experience of application customers is further influenced;

in addition, the existing inverter system has a low electromagnetic compatibility level, firstly, the input end is provided with fewer rectifying measures, the influence of relevant electromagnetic interference on the system is difficult to effectively shield, secondly, magnetic materials with high magnetic conductivity, high saturation flux density and small loss are hardly added at the output end to effectively inhibit the interference on the output, and usually, voltage surge is easily generated under the condition of high rotating speed of the motor, so that the phenomenon of shaft current corrosion is generated.

Therefore, a miniaturized inverter system with high integration and high performance of a driving motor is urgently needed to be developed, parts of the traditional inverter system are integrated, and meanwhile, the magnetic anti-interference structural component with reasonable design is arranged at the input end and the output end, so that the electromagnetic shielding capability is improved, the shaft current corrosion prevention capability is improved, and the inverter system is enabled to have higher efficiency and high output performance.

The utility model with publication number CN112994367a discloses an axially integrated electric vehicle motor control system, which comprises a driving motor and a motor controller, wherein the motor controller comprises a box body, and a power module, a control panel, a film capacitor and the like which are arranged in the box body; the motor controller is arranged on the axial rear end face of the driving motor; the power module comprises a drive plate, an IGBT module and a heat dissipation bottom plate which are sequentially arranged from top to bottom, a heat dissipation cavity is arranged in the heat dissipation bottom plate, a liquid inlet hole and a liquid outlet hole which are arranged along two ends of a diagonal line are formed in the bottom of the heat dissipation cavity, and the liquid inlet hole and the liquid outlet hole are respectively connected with a first liquid inlet pipe and a first liquid outlet pipe which are arranged on the box body.

Although the motor controller is axially arranged at the rear end cover of the motor, the two-in-one integration of the motor controller is realized. However, the internal layout scheme of the controller still belongs to a conventional structure of parallel layout of the power module and the capacitor, which is not beneficial to fully utilizing the internal structure of the controller, reducing the size of the controller and improving the integration level of the controller. Meanwhile, the layout scheme also results in that the controller box is suspended outside the motor shell in a larger structure, so that the outlines of the motor and the control assembly cannot be effectively standardized, and the space utilization rate of the engine compartment of the whole vehicle is not improved.

The utility model discloses a utility model with publication number CN212386291U discloses an integrated new energy automobile power assembly, which comprises a motor, a reducer, a motor controller and a PDU module, wherein the motor and the reducer are in the same shell and are positioned at the bottommost layer of the whole power assembly; the motor controller is fixedly connected right above the motor; the PDU module is fixedly connected right above the motor controller. The motor, the speed reducer, the motor controller and the PDU module are directly and fixedly connected through respective shells, a large number of middle connecting pieces are omitted, and the connecting structure is compact and high in integration degree; the motor and the reducer share one shell for packaging, so that the stability between the connection is improved, and the integration degree is improved.

Although this technical scheme's integrated mode realizes controller motor integration for traditional structure, its really solitary motor of essence passes through bolted mechanical connection with motor controller, and the water route of dispelling the heat each other still needs external water pipe to connect, and whole space utilization is not high, can not effectively improve the integrated level of controller, can not miniature electric automobile's compact overall arrangement demand.

SUMMERY OF THE UTILITY MODEL

The purpose of the present invention is to provide a high performance integrated miniaturized inverter system for overcoming the above-mentioned drawbacks of the prior art, which makes full use of the internal space of the controller by arranging the internal devices of the controller in a circular shape; therefore, the inverter system is in a disc shape and is axially arranged at the rear end cover of the driving motor. The defects that in the first technical scheme, the controller box is too large and the box is provided with a larger structure and is suspended on the motor shell are overcome; meanwhile, the defects of low integration level and low space utilization rate caused by the fact that the controller is arranged above the motor in the existing scheme are also avoided.

The purpose of the utility model can be realized by the following technical proposal:

a high-performance integrated miniaturized inverter system comprises an end cover assembly, a sealing cover and an internal device, wherein one side of the end cover assembly is connected with the sealing cover, and the other side of the end cover assembly is used for being connected with a driving motor; the end cover component is of a disc type inner cavity structure, and the internal device is arranged in the end cover component;

the internal device comprises a PCBA component, an input suppression device, a support capacitor, an IGBT module, an output suppression device and a position sensor, wherein the PCBA component is electrically connected with the input suppression device, the support capacitor, the IGBT module, the output suppression device and the position sensor respectively.

Furthermore, the position sensor is fixed at the circle center of the end cover assembly, and the input suppression device, the support capacitor, the IGBT module and the output suppression device are respectively installed around the position sensor in a surrounding mode.

Furthermore, the upper surface of the end cover assembly is a disc type inner cavity, a rotary-transformer mounting hole and a module mounting platform are arranged in the disc type inner cavity, the rotary-transformer mounting hole is located at the circle center of the disc type inner cavity, the module mounting platform is located on one side of the rotary-transformer mounting hole, the position sensor is fixed in the rotary-transformer mounting hole, the IGBT module is fixed in the module mounting platform, and a water inlet and a water outlet are formed in the outer side of the end cover assembly.

Further, the bottom terminal surface of end cover subassembly is equipped with bearing room, three-phase waist type hole and heat dissipation water course apron, the bearing room is located the bottom terminal surface center of end cover subassembly, three-phase waist type hole is located the edge of bearing room, heat dissipation water course apron is located one side in three-phase waist type hole, the bearing room is used for installing driving motor's bearing, three-phase waist type hole is used for supplying the motor three-phase copper bar of output suppression device to pass, heat dissipation water course apron with the position of module mount table is corresponding, the cavity intercommunication that heat dissipation water course apron and end cover subassembly's bottom terminal surface formed the inlet outlet.

Further, the PCBA subassembly includes PCB circuit board, the range upon range of busbar of three-phase and board-mounted current sensor all fix on PCB circuit board to with PCB circuit board electrical connection.

Further, the output suppression device is an arc-shaped sector structure, the arc-shaped sector structure comprises an alternating current output support, a motor three-phase copper bar, a three-phase switching copper bar and a three-phase rectification magnetic ring, the motor three-phase copper bar and the three-phase rectification magnetic ring are both installed in the alternating current output support, one end of the three-phase switching copper bar is electrically connected with the motor three-phase copper bar, and the other end of the three-phase switching copper bar is electrically connected with the PCBA assembly.

Furthermore, the alternating current output support is of an arc sector structure, a mounting groove is arranged in the alternating current output support, a three-phase hole is arranged in the mounting groove, and a magnetic ring groove is surrounded on the outer side of the three-phase hole;

the motor three-phase copper bar passes the three-phase hole and fixes in the mounting groove, the three-phase rectification magnetic ring is installed in the magnetic ring inslot.

Furthermore, the input suppression device is of an arc-shaped ring structure, the input suppression device comprises a current stabilization support, a current stabilization PCB, a common mode inductor, a differential mode capacitor and a common mode capacitor, the current stabilization support is of a shell structure, the common mode inductor, the differential mode capacitor and the common mode capacitor are all installed in the current stabilization support, the current stabilization PCB covers and is installed on the opening side of the current stabilization support, and the current stabilization PCB is electrically connected with the common mode inductor, the differential mode capacitor and the common mode capacitor respectively.

Further, the differential mode capacitor comprises a first X1 capacitor and a second X1 capacitor, the capacitance value of the first X1 capacitor is within a range of 310-350nF, the capacitance value of the second X1 capacitor is within a range of 450-490nF, the capacitance value of the second X1 capacitor comprises a pair of first Y1 capacitors and a pair of second Y1 capacitors, the capacitance value of the first Y1 capacitor is within a range of 8-12nF, and the capacitance value of the second Y1 capacitor is within a range of 0.8-1.2 nF.

Further, the high-performance integrated miniaturized inverter system is used for being installed at the position of a rear end cover of the driving motor, a rear bearing of the driving motor is installed at the bottom of the end cover assembly, and a power wire harness of the driving motor is electrically connected with the output suppression device.

Compared with the prior art, the utility model has the advantages of it is following:

(1) The utility model discloses a miniaturized contravariant system of high performance integration through with machine controller design disc, the controller bottom is equipped with the motor bearing room. The motor controller is used as a rear end cover of the driving motor and is arranged at the axial position of the motor, so that the integration level of the inverter system and the driving motor is higher, the assembly space utilization rate is higher, and the motor controller is suitable for the use requirement of narrow and small engine compartment space of the miniature electric automobile.

(2) The utility model discloses a miniaturized contravariant system of high performance integration, its box inner structure spare adopt circumference formula overall arrangement structure for the controller appearance is the disc, thereby has agreed with driving motor casing cask formula structure better, makes the power assembly structure wholly be cylindricly, avoids the controller part to surpass motor housing diameter, hangs in the casing outside, occupies the too much layout space of whole car.

(3) The utility model discloses a miniaturized contravariant system of high performance integration, its inside integrated input suppression device and output suppression device have good magnetism interference killing feature, have improved contravariant system's electromagnetic shield ability and prevention axle current corrosion ability effectively, ensure the stability and the reliability of contravariant system operation.

Drawings

Fig. 1 is a schematic overall layout diagram of a high-performance integrated miniaturized inverter system provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a high performance integrated miniaturized inverter system provided in an embodiment of the present invention;

fig. 3 is a schematic diagram of an internal structure layout of a high-performance integrated miniaturized inverter system provided in an embodiment of the present invention;

fig. 4 is a schematic view of an upper end surface structure of an end cover assembly of a high-performance integrated miniaturized inverter system provided in an embodiment of the present invention;

fig. 5 is a schematic view of a bottom end face structure of an end cover assembly of a high performance integrated miniaturized inverter system according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a PCBA assembly of a high-performance integrated miniaturized inverter system according to an embodiment of the present invention;

fig. 7 is a schematic top view of an output suppression apparatus of a high performance integrated miniaturized inverter system according to an embodiment of the present invention;

fig. 8 is a schematic front view of an output suppression device of a high performance integrated miniaturized inverter system according to an embodiment of the present invention;

fig. 9 is a schematic top structural view of an ac output support of a high performance integrated miniaturized inverter system according to an embodiment of the present invention;

fig. 10 is a schematic bottom structure diagram of an ac output support of a high performance integrated miniaturized inverter system according to an embodiment of the present invention;

fig. 11 is a schematic top view of an input suppression device of a high performance integrated miniaturized inverter system according to an embodiment of the present invention;

fig. 12 is an exploded schematic view of an input suppression device of a high performance integrated miniaturized inverter system according to an embodiment of the present invention;

in the figure, 1, an end cover assembly, 2, a sealing cover, 3, a driving motor, 4, a PCBA assembly, 5, an input suppression device, 51, a current stabilization support, 52, a current stabilization PCB plate, 53, a common mode inductor, 54, a differential mode capacitor, 55, a common mode capacitor, 6, a supporting capacitor, 7, an IGBT module, 8, an output suppression device, 81, an alternating current output support, 811, a mounting groove, 812, a three-phase hole, 813, a magnetic ring groove, 82, a motor three-phase copper bar, 83, a three-phase switching copper bar, 84, a three-phase rectification magnetic ring, 9, a position sensor, 11, a disc type inner cavity, 12, a water inlet/outlet, 13, a rotating-changing mounting hole, 14, a module mounting table, 15, a three-phase kidney-shaped hole, 16, a bearing chamber, 17, a heat dissipation water channel cover plate, 41, a PCB circuit board, 42, a three-phase laminated busbar,43 and an on-board current sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

This embodiment has designed a high performance integrated miniaturized inverter system, and this inverter system is discoid motor controller unit, and its appearance agrees with driving motor cylindrical casing mutually. The bottom of the controller unit is provided with a motor bearing chamber, so that the motor controller can be used as a rear end cover of the driving motor and is distributed at the axial position of the motor, and the integration level of the inverter system and the driving motor is higher.

A high-performance integrated miniaturized inversion system is designed, main devices in an end cover assembly of the inversion system are in a circumferential structural layout, and a PCBA assembly covers the main devices. The layout mode has compact structure and high integration level, the appearance of the motor controller is in a miniaturized disc structure, and the phenomenon that the local structure of a controller unit protrudes out of the outer diameter of a motor shell is avoided, so that the motor controller occupies too much space of the whole vehicle.

The high-performance integrated miniaturized inverter system is designed, an input suppression device and an output suppression device are integrated in the inverter system, the inverter system has magnetic anti-interference performance, the electromagnetic shielding capability and the shaft current corrosion prevention capability of the inverter system are effectively improved, and the stability and the reliability of the operation of the system are ensured.

Example 1

As shown in fig. 1, the present embodiment provides a high performance integrated miniaturized inverter system, which is a disc type motor controller unit, arranged along the axial direction of the motor, and installed and fixed at one end of the cylindrical structure of the driving motor instead of the rear end cover of the motor.

As shown in fig. 2, the high-performance integrated miniaturized inverter system provided by the present embodiment includes an end cap assembly 1, a sealing cover 2, a PCBA assembly 4, an input suppression device 5, a support capacitor 6, an IGBT module 7, an output suppression device 8, and a position sensor 9.

As shown in fig. 3, the internal components of the motor controller unit are in a circumferential layout structure, the position sensor 9 is fixed at the position of the center of the end cover assembly 1, and the input suppression device 5, the support capacitor 6, the IGBT module 7 and the output suppression device 8 are respectively arranged in a surrounding manner around one circumference of the position sensor 9.

As shown in fig. 4, the upper surface of the controller end cover assembly 1 is a disc-type inner cavity structure, and a rotary mounting hole 13 is formed at the center of a circle of the inner cavity 11 of the box body and used for fixing the position of the sensor 13; and a module mounting table 14 is arranged on one side of the rotary transformer mounting hole 13 and used for fixing the IGBT module 7. And a water inlet and a water outlet 12 for cooling liquid of the inverter system are arranged on the outer side of the end cover component 1.

As shown in fig. 5, a bearing chamber 16 for a driving motor is arranged at the central position of the bottom end face of the controller end cover assembly 1; the edge of a bearing chamber 16 in the end cover assembly 1 is provided with a three-phase waist-shaped hole 15 for penetrating through a three-phase copper bar 82 of the motor; a fan-shaped heat dissipation water channel cover plate 17 is arranged on one side of the three-phase kidney-shaped hole 15, the position of the water channel cover plate 17 corresponds to the module mounting table 14 in the inner cavity 11 of the box body, the cavity under the heat dissipation water channel cover plate 17 is communicated with the water inlet and outlet 12, and cooling liquid flows through the area of the heat dissipation water channel cover plate 17 from the water inlet and outlet 12, so that cooling and heat dissipation of the IGBT module 7 are realized.

As shown in fig. 6, the PCBA assembly 4 includes a PCB circuit board 41, a three-phase stacked busbar42, and an on-board current sensor 43. The PCB 41 is a circular disc structure, and the edge of the upper surface of the PCB 41 is provided with an L-shaped three-phase stacked busbar42. The three-phase laminated busbar42 is electrically connected with the PCB 41 in a soldering mode and fixed on the PCB 41 in an encapsulating and potting mode. The on-board current sensor 43 is disposed at one end of the three-phase laminated busbar 43.

As shown in fig. 7-10, the output suppressing device 8 is an arc-shaped sector structure, and includes an ac output support 81, a three-phase copper bar 82 for the motor, a three-phase switching copper bar 83, and a three-phase rectification magnetic ring 84. As shown in fig. 8, an installation groove 811 is provided in the ac output support 81, three rectangular three-phase holes 812 are provided in the installation groove 811, and a waist-shaped annular magnetic ring groove 813 is provided at the bottom of the ac output support 81. As shown in fig. 7, the three-phase copper bar 82 of the motor passes through the three-phase hole 812 and is fixed in the mounting groove 811; and one end of the three-phase switching copper bar 82 is electrically connected with the motor three-phase copper bar 82, and the other end of the three-phase switching copper bar is electrically connected with the PCBA component 4. The three-phase rectification magnetic ring 84 is fixed in the magnetic ring groove 813 in an encapsulating manner.

As shown in fig. 11 and 12, the input suppression device 5 has an approximately arc-shaped ring structure, and includes a current stabilization support 51, a current stabilization PCB 52, a common mode inductor 53, a differential mode capacitor 54, and a common mode capacitor 55. The current stabilizing support 51 is a housing structure, the common mode inductor 53, the differential mode capacitor 54 and the common mode capacitor 55 are encapsulated in the housing, the differential mode capacitor 54 is composed of X1 capacitors of 330nF and 470nF, and the common mode capacitor 55 is composed of a pair of Y1 capacitors of 10nF and a pair of Y1 capacitors of 1 nF. The steady-current PCB 52 covers the upper surface of the steady-current support 51 and electrically connects the common-mode inductor 53, the differential-mode capacitor 54 and the common-mode capacitor 55.

The assembly process of the high performance integrated miniaturized inverter system of the present embodiment is described below.

First, the end cap assembly 1 is assembled. And (3) welding the radiating water channel cover plate 17 at the bottom of the box body to the bottom of the box body in a stirring friction mode. The water inlet and outlet stub outs 12 are then mounted to the outside of the end cap assembly 1 and the high and low pressure connectors are mounted to the side walls of the assembly 1.

Next, the input suppressing device 5 is assembled. Placing the common-mode inductor 53, the differential-mode capacitor 54 and the common-mode capacitor 55 in the cavity of the current stabilization support 51 according to the positions shown in fig. 9, then covering the current stabilization PCB board 52 on the upper surface of the current stabilization support 51, soldering the common-mode inductor 53, the differential-mode capacitor 54 and the common-mode capacitor 55 with the current stabilization PCB board 52 respectively, and then potting and fixing the common-mode inductor 53, the differential-mode capacitor 54, the common-mode capacitor 55 and the current stabilization PCB board in the cavity of the current stabilization support 51 through potting adhesive.

Then, the output suppression device 8 is assembled. The motor three-phase copper bar 82 passes through the three-phase hole 812 and is fixed in the mounting groove 811, and then one end of the three-phase switching copper bar 83 and the motor three-phase copper bar 82 are fixed on the inner threaded hole of the mounting groove 811. Finally, the three-phase rectification magnetic ring 84 is placed in the magnetic ring groove 813 at the bottom of the alternating current rectification support 81, and the magnetic ring is fixed in an embedding mode.

Next, the PCBA assembly 4 is assembled. The three-phase laminated busbar42 is pre-fixed on the PCB 41 by soldering and electrically connected to each other. And then fixing the three-phase laminated busbar42 and the PCB 41 in a dispensing fixing mode. And then the on-board current sensor 43 is fixed on the PCB 41 by wave soldering.

Then, the motor controller is assembled. The position sensor 9 is arranged in a rotary-deformation mounting hole at the circle center of the end cover assembly 1, and then the bottom of the IGBT module 7 is coated with heat-conducting silicone grease and fixed on a module mounting table 14 of the end cover assembly 1. Next, the input suppressor 5, the support capacitor 6 and the output suppressor 8 are fixed inside the end cap assembly 1 in the positions shown in fig. 3. The PCBA assembly 4 is then housed within the controller end cap assembly 1 and electrically connected to the input suppressor 5, the support capacitor 6, the IGBT module 7, and the output suppressor 8 by soldering. Finally, the sealing cover 2 is fixed on the upper surface of the end cover component 1, and the assembly of the controller is completed

Up to this point, a high performance integrated miniaturized inverter system has been assembled.

Subsequently, the inverter system is installed at the position of the rear end cover of the driving motor, and the rear bearing of the driving motor is correspondingly placed in the bearing chamber 16 at the bottom of the end cover assembly 1. And the power wiring harness of the motor is electrically connected with the motor three-phase copper bar 82 in the inverter system at the junction box of the power terminal of the driving motor. Therefore, the assembly of the high-performance integrated miniaturized inverter system power assembly is completed.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The high-performance integrated miniaturized inverter system is characterized by comprising an end cover assembly (1), a sealing cover (2) and an internal device, wherein one side of the end cover assembly (1) is connected with the sealing cover (2), and the other side of the end cover assembly is used for being connected with a driving motor (3); the end cover component (1) is of a disc type inner cavity structure, and the internal device is arranged in the end cover component (1);

the internal device comprises a PCBA assembly (4), an input suppression device (5), a support capacitor (6), an IGBT module (7), an output suppression device (8) and a position sensor (9), wherein the PCBA assembly (4) is electrically connected with the input suppression device (5), the support capacitor (6), the IGBT module (7), the output suppression device (8) and the position sensor (9) respectively.

2. A high performance integrated miniaturized inverter system according to claim 1, wherein said position sensor (9) is fixed at the center of the end cover assembly (1), and said input suppressor (5), support capacitor (6), IGBT module (7) and output suppressor (8) are respectively installed around said position sensor (9).

3. The high-performance integrated miniaturized inverter system according to claim 1, wherein the upper surface of the end cover assembly (1) is a disc-type inner cavity (11), a rotary-transformer mounting hole (13) and a module mounting table (14) are arranged in the disc-type inner cavity (11), the rotary-transformer mounting hole (13) is located at the center of the disc-type inner cavity (11), the module mounting table (14) is located on one side of the rotary-transformer mounting hole (13), the position sensor (9) is fixed in the rotary-transformer mounting hole (13), the IGBT module (7) is fixed in the module mounting table (14), and a water inlet and a water outlet (12) are arranged on the outer side of the end cover assembly (1).

4. A high-performance integrated miniaturized inverter system according to claim 3, wherein a bearing chamber (16), a three-phase waist-shaped hole (15) and a heat dissipation water channel cover plate (17) are provided on the bottom end face of the end cover assembly (1), the bearing chamber (16) is located in the center of the bottom end face of the end cover assembly (1), the three-phase waist-shaped hole (15) is located at the edge of the bearing chamber (16), the heat dissipation water channel cover plate (17) is located at one side of the three-phase waist-shaped hole (15), the bearing chamber (16) is used for installing the bearing of the driving motor (3), the three-phase waist-shaped hole (15) is used for the motor three-phase copper bar (82) of the output suppression device (8) to pass through, the heat dissipation water channel cover plate (17) corresponds to the position of the module mounting platform (14), and the cavity formed by the heat dissipation water channel cover plate (17) and the bottom end face of the end cover assembly (1) is communicated with the water inlet/outlet (12).

5. A high performance integrated miniaturized inverter system according to claim 1, characterized in that the PCBA assembly (4) comprises a PCB circuit board (41), a three-phase stacked busbar (42) and an on-board current sensor (43), the three-phase stacked busbar (42) and the on-board current sensor (43) being fixed on the PCB circuit board (41) and being electrically connected with the PCB circuit board (41).

6. The high-performance integrated miniaturized inverter system of claim 1, wherein said output suppressing means (8) is an arc-shaped sector structure, said arc-shaped sector structure comprises an ac output support (81), a three-phase copper bar (82) of the motor, a three-phase switching copper bar (83) and a three-phase rectification magnetic ring (84), said three-phase copper bar (82) of the motor and said three-phase rectification magnetic ring (84) are both installed in the ac output support (81), one end of said three-phase switching copper bar (83) is electrically connected to the three-phase copper bar (82) of the motor, and the other end is electrically connected to the PCBA assembly (4).

7. The high-performance integrated miniaturized inverter system according to claim 6, wherein the AC output support (81) has an arc-shaped sector structure, a mounting groove (811) is formed in the AC output support (81), a three-phase hole (812) is formed in the mounting groove (811), and a magnet ring groove (813) is surrounded on the outer side of the three-phase hole (812);

the motor three-phase copper bar (82) penetrates through a three-phase hole (812) to be fixed in a mounting groove (811), and the three-phase rectification magnetic ring (84) is mounted in a magnetic ring groove (813).

8. A high-performance integrated miniaturized inverter system according to claim 1, wherein the input suppressor (5) has an arc-shaped ring structure, the input suppressor (5) includes a current-stabilizing support (51), a current-stabilizing PCB (52), a common-mode inductor (53), a differential-mode capacitor (54), and a common-mode capacitor (55), the current-stabilizing support (51) has a housing structure, the common-mode inductor (53), the differential-mode capacitor (54), and the common-mode capacitor (55) are all mounted in the current-stabilizing support (51), the current-stabilizing PCB (52) is mounted on an opening side of the current-stabilizing support (51) in a covering manner, and the current-stabilizing PCB (52) is electrically connected to the common-mode inductor (53), the differential-mode capacitor (54), and the common-mode capacitor (55), respectively.

9. A high performance integrated miniaturized inverting system according to claim 8, wherein said differential mode capacitance (54) comprises a first X1 capacitance and a second X1 capacitance, said first X1 capacitance having a capacitance value within the range of 310-350nF, said second X1 capacitance having a capacitance value within the range of 450-490nF, said second X1 capacitance comprising a pair of first Y1 capacitances and a pair of second Y1 capacitances, said first Y1 capacitance having a capacitance value within the range of 8-12nF, said second Y1 capacitance having a capacitance value within the range of 0.8-1.2 nF.

10. A high performance integrated miniaturized inverter system according to claim 1, wherein the high performance integrated miniaturized inverter system is used for being installed at the position of the rear end cover of the driving motor (3), the rear bearing of the driving motor (3) is installed at the bottom of the end cover assembly (1), and the power wire harness of the driving motor (3) is electrically connected with the output suppression device (8).

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