A power controller assembly, an integrated powertrain system and a vehicle

Abstract

This invention relates to the field of automobile manufacturing, and in particular to a power controller assembly, an integrated powertrain system, and an automobile. The power controller assembly provided by this invention includes a control board, a shielding plate, a cooling module, a SiC drive module, a three-phase AC module, and an EMC filter module. The control board is mounted on one side of the shielding plate. An isolation wall is provided between the cooling module and the shielding plate, with the cooling module located on the other side of the shielding plate, forming at least three cavities with the shielding plate through the isolation wall. The SiC drive module, the three-phase AC module, and the EMC filter module are respectively arranged in different cavities and are in close contact with the cooling module. The power controller assembly, integrated powertrain system, and automobile provided by this invention can solve the problems of complex assembly, poor heat dissipation capacity, and poor electromagnetic compatibility in integrated powertrain systems.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing, and in particular to a power controller assembly, an integrated power system, and an automobile. Background Technology

[0002] With the advancement of technology, automobiles have become an important means of transportation in people's daily lives. Integrated powertrain systems, as the power supply components of automobiles, have the advantages of small footprint and convenient assembly, and are widely used in the automotive industry. Integrated powertrain systems typically employ a one-piece design integrating the motor assembly, reducer assembly, and power controller assembly, all housed within the integrated powertrain system housing.

[0003] In existing technologies, the power controller assembly, as the control center of the motor assembly, shares a housing with both the motor assembly and the reducer assembly. The power controller assembly has a complex structural design, and the lack of modular design for its components leads to inconvenient assembly. Furthermore, due to the high temperature and voltage during operation, the tightly packed components result in poor heat dissipation. Therefore, the drive module it carries needs to possess characteristics such as low loss, high switching frequency, high temperature resistance, and high voltage resistance. Using a SiC drive module can well meet this requirement. The DC power supply is converted into three-phase AC power by the SiC drive module, and then the motor assembly converts electrical energy into mechanical energy for the vehicle. However, in practical applications, the high switching frequency, high power density, and high voltage characteristics of the SiC drive module lead to poor electromagnetic compatibility (EMC) performance of the integrated powertrain system equipped with the SiC drive module, failing to simultaneously meet the integrated powertrain system's heat dissipation and high EMC requirements.

[0004] In view of the above problems, there is an urgent need to design a new power controller assembly to solve the problems of complex assembly, poor heat dissipation and electromagnetic compatibility of integrated power systems. Summary of the Invention

[0005] In view of the above, the present invention provides a power controller assembly, an integrated power system and an automobile, aiming to solve the problems of complex assembly, poor heat dissipation and electromagnetic compatibility of the integrated power system in the prior art.

[0006] The present invention first provides a power controller assembly, including a control board, a shielding board, a cooling module, a SiC drive module, a three-phase AC module and an EMC filter module;

[0007] The control board is installed on one side of the shielding plate;

[0008] The cooling module and shielding plate are equipped with an isolation wall. The cooling module is arranged on the other side of the shielding plate and forms at least three cavities with the shielding plate through the isolation wall.

[0009] The SiC drive module, three-phase AC module, and EMC filter module are arranged in different cavities and are attached to the cooling module.

[0010] Optionally, it also includes a bus capacitor, which is attached to the side of the cooling module away from the shielding plate and electrically connected to the EMC filter module; the bus capacitor is also electrically connected to the SiC drive module; the three-phase AC module is electrically connected to the SiC drive module and is used to supply three-phase AC power to the motor assembly; the SiC drive module is equipped with a low-voltage plug, which is electrically connected to the control board through the low-voltage plug and is used to control the power of the SiC drive module.

[0011] Optionally, a DC module is also included, which is connected to the EMC filter module and used to supply power via a DC power supply.

[0012] Optionally, the EMC filter module includes a mounting base, two Y capacitors, two nanocrystalline magnetic rings, a DC bus copper bus, and a grounding copper bus. The mounting base and the DC bus copper bus are arranged alternately, and the mounting base is connected to the DC module. The two nanocrystalline magnetic rings are arranged alternately on the mounting base and the DC bus copper bus. The two Y capacitors are arranged between the two nanocrystalline magnetic rings. The grounding copper bus is adjacent to the Y capacitors and is connected in close contact with the cooling module. The DC bus copper bus is connected to the bus capacitors to deliver DC power to the bus capacitors.

[0013] Optionally, the isolation wall includes a first isolation wall and a second isolation wall; the first isolation wall is vertically installed on one side of the shielding plate, with a control board arranged inside the first isolation wall and the outer side forming a first cavity with the cooling module for arranging a three-phase AC module; the second isolation wall is vertically installed on the cooling module, with the shielding plate and the cooling module forming a second cavity and a third cavity on both sides respectively, with a SiC drive module arranged in the second cavity and an EMC filter module arranged in the third cavity; wherein, the first cavity and the second cavity are adjacent.

[0014] Optionally, the isolation wall also includes a third isolation wall, which is horizontally arranged on the shielding plate. The shielding plate, the third isolation wall, the second isolation wall and the cooling module form a third cavity, and the EMC filter module is arranged in the third cavity.

[0015] Optionally, the three-phase AC module is equipped with a mounting section and a UVW three-phase AC copper busbar; the three-phase AC module is attached to the cooling module through the mounting section; the UVW three-phase AC copper busbar is fixedly connected to the mounting section and is used to connect the motor assembly.

[0016] Optionally, the SiC drive module includes a drive board, a SiC power component, and a three-phase current sensor; the drive board is arranged on the side close to the shielding plate, and the SiC power component and the three-phase current sensor are closely connected on the side away from the shielding plate; wherein, the three-phase current sensor is adjacent to the EMC filter module.

[0017] The present invention also provides an integrated power system, including the power controller assembly as described above, and further including a motor assembly and a housing; the power controller assembly and the motor assembly are integrated in the housing and electrically connected to the motor assembly; the housing and the shielding plate form a fourth cavity for arranging a control board; the housing, the shielding plate, and the cooling module also form a first cavity, a second cavity, and a third cavity for arranging a three-phase AC module, a SiC drive module, and an EMC filter module, respectively.

[0018] Finally, the present invention provides an automobile including the integrated powertrain system described above.

[0019] The beneficial effects of the power controller assembly, integrated power system, and automobile provided by this invention are as follows:

[0020] 1. Through the structural optimization design of the power controller assembly, isolation walls are set in the shielding plate and cooling module, so that the shielding plate and cooling module form multiple independent cavities through the isolation walls. The SiC drive module, three-phase AC module and EMC filter module are arranged in different cavities. The control board is arranged on the side of the shielding plate away from the SiC drive module, three-phase AC module and EMC filter module. The four form electromagnetic isolation from each other, which reduces electromagnetic interference in the power controller assembly, greatly improves EMC performance, and enhances the electromagnetic compatibility of the integrated power system.

[0021] 2. At the same time, by arranging the SiC drive module, three-phase AC module and EMC filter module in close contact with the cooling module, the cooling module has a large contact area with the SiC drive module, three-phase AC module and EMC filter module, which improves the heat dissipation capacity of the power controller assembly, thereby improving the heat dissipation capacity of the integrated power system.

[0022] 3. The modular design of each component in the power controller assembly makes the assembly of the integrated power system more convenient.

[0023] Other features and advantages of the embodiments of the present invention will be described in the following detailed description section. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is an exploded structural diagram of the power controller assembly provided as an example in an embodiment of the present invention;

[0026] Figure 2This is a schematic diagram of the shielding plate provided as an example in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a cooling module provided as an example in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of an EMC filtering module provided as an example in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of a SiC driving module provided as an example in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of a three-phase AC module provided as an example in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the integrated power system provided as an example in a variation of the present invention;

[0032] Figure 8 This is a schematic diagram of a car module provided as an example in a variation of the present invention.

[0033] The components represented by each number in the above attached diagram are listed below:

[0034] Detailed Implementation

[0035] To make the above and other features and advantages of the present invention clearer, the invention will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explanation to those skilled in the art and are exemplary only, not restrictive.

[0036] As mentioned above, the overall concept of this invention is to provide a power controller assembly 100, an integrated power system 200, and a vehicle 1000. By optimizing the structure of the power controller assembly 100 and modularizing its components, the assembly of the integrated power system becomes more convenient. In the prior art, the components in the controller of the integrated power system 200 are closely arranged, which easily leads to electromagnetic interference between the SiC drive module 40 and the components, affecting the EMC performance of the integrated power system 200. To address this deficiency, an isolation wall is designed around the SiC drive module 40, forming multiple independent cavities, in which each component is arranged. This significantly reduces electromagnetic interference, meeting the electromagnetic compatibility requirements of the integrated power system 200. At the same time, components that are prone to heat generation, such as the SiC drive module 40, the three-phase AC module 60, and the EMC filter module 50, are closely attached to the cooling module 30. The cooling module 30 provides a large area for heat exchange, enhancing the heat dissipation capacity of each power consumption component and thus increasing the heat dissipation effect of the integrated power system 200.

[0037] Please refer to Figures 1-8 The present invention first provides a power controller assembly 100, including a control board 10, a shielding plate 20, a cooling module 30, a SiC drive module 40, a three-phase AC module 60, and an EMC filter module 50;

[0038] The control board 10 is installed on one side of the shielding plate 20;

[0039] The cooling module 30 and the shielding plate 20 are provided with an isolation wall. The cooling module 30 is arranged on the other side of the shielding plate 20, and together with the shielding plate 20, they form at least three cavities through the isolation wall.

[0040] The SiC drive module 40, the three-phase AC module 60, and the EMC filter module 50 are arranged in different cavities and are attached to the cooling module 30.

[0041] It is understood that in this embodiment, the powertrain controller includes a control board 10, a shielding plate 20, a cooling module 30, a SiC drive module 40, a three-phase AC module 60, and an EMC filter module 50. The control board 10 and the SiC drive module 40 are respectively arranged on both sides of the shielding plate 20, which provides excellent electromagnetic isolation for the control board 10. The SiC drive module 40 is arranged between the shielding plate 20 and the cooling module 30, and is in contact with the cooling module 30. The shielding plate 20 and the cooling module 30 are designed with multiple isolation walls, which form three independent cavities between the shielding plate 20 and the cooling module 30. The SiC drive module 40 is arranged in the middle cavity, and the two cavities on either side are respectively attached to... The cooling module 30 incorporates the three-phase AC module 60 and the EMC filter module 50, ensuring electromagnetic isolation between the SiC drive module 40, the three-phase AC module 60, and the EMC filter module 50, preventing electromagnetic interference between them. Furthermore, all three are isolated from the controller via the shielding plate 20, thereby enhancing the EMC capability of the power controller assembly 100. The close fit between the SiC drive module 40, the three-phase AC module 60, and the EMC filter module 50 and the cooling module 30 improves their heat dissipation capacity, thus enhancing the heat dissipation performance of the power controller assembly 100 and consequently improving the heat dissipation performance of the integrated power system 200.

[0042] Furthermore, the power controller assembly 100 also includes a bus capacitor 70, which is attached to the cooling module 30 and arranged on the side away from the shielding plate 20, aligned with and electrically connected to the EMC filter module 50; the bus capacitor 70 is also electrically connected to the SiC drive module 40; the three-phase AC module 60 is electrically connected to the SiC drive module 40 and is used to supply three-phase AC power to the motor assembly 300; the SiC drive module 40 is provided with a low-voltage plug 41, which is electrically connected to the control board 10 through the low-voltage plug 41 and is used to control the power of the SiC drive module 40.

[0043] In an optional embodiment of the present invention, the bus capacitor 70 serves as a power consumption component and is arranged in close contact with the cooling module 30, thereby improving the heat dissipation performance of the bus capacitor 70. The bus capacitor 70 is fixed on the side of the cooling module 30 away from the shielding plate 20 and aligned with the EMC filter module 50, facilitating electrical connection with the EMC filter module 50 and the SiC drive module 40. This makes the component arrangement within the power controller assembly 100 more modular and easier to assemble. After being filtered by the EMC filter module 50, the current flows to the SiC drive module 40 through the bus capacitor 70. The bus capacitor 70 can further filter the current to further enhance the electromagnetic compatibility of the power controller assembly 100.

[0044] Furthermore, the power controller assembly 100 also includes a DC module 80, which is connected to the EMC filter module 50 and is used to supply power via a DC power source.

[0045] In an optional embodiment of the present invention, the power controller assembly 100 further includes a DC module 80. The DC module 80 is used to connect to the DC power supply of the vehicle 1000. The DC module 80 is connected to the EMC filter module 50. The DC power supply is sent to the bus capacitor 70 through the EMC filter module 50, and then sent to the three-phase AC module 60 through the SiC drive module 40 to be converted into three-phase AC power for transmission to the motor assembly 300.

[0046] This embodiment designs the structure of the EMC filter module 50, which includes a mounting base 51, two Y capacitors 52, two nanocrystalline magnetic rings 53, a DC bus copper bus 54, and a grounding copper bus 55. The mounting base 51 and the DC bus copper bus 54 are arranged at intervals, and the mounting base 51 is connected to the DC module 80. The two nanocrystalline magnetic rings 53 are arranged at intervals on the mounting base 51 and the DC bus copper bus 54. The two Y capacitors 52 are arranged between the two nanocrystalline magnetic rings 53. The grounding copper bus 55 is adjacent to the Y capacitors 52 and is connected to the cooling module 30. The DC bus copper bus 54 is connected to the bus capacitor 70 to transmit DC power to the bus capacitor 70.

[0047] It is understood that in the EMC filter module 50, the mounting base 51 and the DC bus copper bus 54 are arranged at intervals, and each is fitted with a nanocrystalline magnetic ring 53. Two Y capacitors 52 are connected between the mounting base 51 and the DC bus copper bus 54, so that the current can pass through the DC module 80, be filtered by the nanocrystalline magnetic ring 53 at the mounting base 51, and then be delivered to the DC bus copper bus 54 by the two Y capacitors 52. The nanocrystalline magnetic ring 53 at the DC bus copper bus 54 is filtered again before being delivered to the bus capacitor 70. At the same time, the Y capacitors 52 can suppress electromagnetic interference. The above components constitute a two-stage filter, which makes the filtering effect of the EMC filter module 50 excellent. The grounding copper bus 55 is connected in close contact with the cooling module 30, which improves the heat dissipation capacity of the EMC filter module 50.

[0048] Furthermore, the isolation wall is designed, including a first isolation wall 21 and a second isolation wall 31. The first isolation wall 21 is vertically set on one side of the shielding plate 20. The control board 10 is arranged inside the first isolation wall 21, and the outer side of the first isolation wall 21 and the cooling module 30 form a first cavity 66 for arranging the three-phase AC module 60. The second isolation wall 31 is vertically set on the cooling module 30, and the two sides of the second isolation wall 31 and the shielding plate 20 and the cooling module 30 respectively form a second cavity 46 and a third cavity 56. The SiC drive module 40 is arranged in the second cavity 46, and the EMC filter module 50 is arranged in the third cavity 56. The first cavity 66 is adjacent to the second cavity 46.

[0049] In an optional embodiment of the present invention, the first isolation wall 21 is vertically arranged on one side of the shielding plate 20. The control board 10 is arranged inside the first isolation wall 21, and the outer side of the first isolation wall 21 and the cooling module 30 form a first cavity 66 to accommodate the three-phase AC module 60, thereby achieving electromagnetic isolation between the control board 10 and the three-phase AC module 60. The second isolation wall 31 is vertically arranged on the cooling module 30, and the two sides of the shielding plate 20 and the cooling module 30 respectively form a second cavity 46 and a third cavity 56. The second cavity 46 is located between the first cavity 66 and the third cavity 56. The SiC drive module 40 is arranged in the second cavity 46, and the EMC filter module 50 is arranged in the third cavity 56, thereby achieving electromagnetic isolation between the modules and enhancing the EMC filtering capability.

[0050] It is understandable that the first isolation wall 21 and the second isolation wall 31 are arranged vertically, and their specific shapes can be appropriately bent and deformed according to the needs of each module to adapt to the installation of each module.

[0051] Furthermore, the isolation wall also includes a third isolation wall 22, which is horizontally arranged on the shielding plate 20. The shielding plate 20, the third isolation wall 22, the second isolation wall 31 and the cooling module 30 form a third cavity 56, and the EMC filter module 50 is arranged inside the third cavity 56.

[0052] In an optional embodiment of the present invention, the isolation wall further includes a third isolation wall 22, which is horizontally arranged on the shielding plate 20. The third isolation wall 22, the cooling module 30 and the second isolation wall 31 form a third cavity 56, so that the DC module 80 connected to the EMC filter module 50 forms electromagnetic isolation with the control board 10, thereby improving the EMC performance of the power controller assembly 100.

[0053] Furthermore, the three-phase AC module 60 is designed with a mounting part 61 and a UVW three-phase AC copper busbar 62; the three-phase AC module 60 is attached to the cooling module 30 through the mounting part 61; the UVW three-phase AC copper busbar 62 is fixedly connected to the mounting part 61 and is used to connect the motor assembly 300.

[0054] It is understandable that in the three-phase AC module 60, the UVW three-phase copper busbar and the mounting part 61 can be integrally molded by injection molding. The mounting part 61 is designed with three contact plates 63. The three contact plates 63 are attached to the cooling module 30 to increase the heat dissipation area of ​​the cooling module 30 and improve the heat dissipation capacity. The UVW three-phase copper busbar is used to directly connect to the motor assembly 300 to shorten the length of the copper busbar.

[0055] Furthermore, the SiC drive module 40 includes a drive board 42, a SiC power component 43, and a three-phase current sensor 44; the drive board 42 is arranged on the side close to the shielding plate 20, and the SiC power component 43 and the three-phase current sensor 44 are closely connected on the side away from the shielding plate 20; wherein, the three-phase current sensor 44 is adjacent to the EMC filter module 50.

[0056] In an optional embodiment of the present invention, the SiC drive module 40 includes an integrated drive board 42, a SiC power component 43, and a three-phase current sensor 44. The SiC power component 43 and the three-phase current sensor 44 are attached to the cooling module 30, which makes the heat dissipation effect of the SiC drive module 40 excellent. The drive board 42 is arranged on the side of the SiC power component 43 and the three-phase current sensor 44 near the shielding plate 20. The three are closely connected and arranged together in the second cavity 46, which improves the electromagnetic interference resistance and improves the EMC performance of the power controller assembly 100.

[0057] This invention also provides an integrated power system 200, including the power controller assembly 100 as described above, as well as a motor assembly 300 and a housing 400; the power controller assembly 100 and the motor assembly 300 are integrated within the housing 400 and electrically connected to the motor assembly 300; the housing 400 and the shielding plate 20 form a fourth cavity 16 for arranging the control board 10; the housing 400, the shielding plate 20, and the cooling module 30 also form a first cavity 66, a second cavity 46, and a third cavity 56 for arranging a three-phase AC module 60, a SiC drive module 40, and an EMC filter module 50, respectively.

[0058] It is understood that in this embodiment of the invention, the motor assembly 300 is arranged on one side of the power controller assembly 100, and the housing 400 and the shielding plate 20 of the power controller assembly 100 form a fourth cavity 16 for the control board 10 to be arranged; the housing 400, the shielding plate 20 and the cooling module 30 also form a first cavity 66, a second cavity 46 and a third cavity 56 for the DC module 80, the three-phase AC module 60, the SiC drive module 40 and the EMC filter module 50 to be arranged respectively; wherein, the side wall of the bus capacitor 70 is also in contact with the housing 400, and part of its heat during operation is carried away by the cooling module 30 and part is carried away by the housing 400, thereby improving the heat dissipation capacity of the integrated power system 200 and thus improving the output capacity of the integrated power system 200.

[0059] It is understandable that the shielding plate 20 has a first isolation wall 21 and a third isolation wall 22 distributed on it. Together with the cooling module 30 with a second isolation wall 31, the cavity of the power controller assembly 100 can be divided into multiple small spaces. The high-voltage DC part, the three-phase high-voltage AC part, and the low-voltage control part are independent of each other, and the wiring harness is short and reasonably arranged, which greatly enhances the EMC capability of the integrated power assembly under high switching frequency and high power conditions.

[0060] Finally, this embodiment of the invention provides a car 1000, including the integrated power system 200 as described above.

[0061] In summary, the beneficial effects of the power controller assembly 100, integrated power system 200, and vehicle 1000 provided by the embodiments of the present invention are as follows: Through the optimized structural design of the power controller assembly 100, isolation walls are set in the shielding plate 20 and the cooling module 30, so that the shielding plate 20 and the cooling module 30 form multiple independent cavities through the isolation walls. The SiC drive module 40, the three-phase AC module 60, and the EMC filter module 50 are respectively arranged in different cavities. The control board 10 is arranged on the side of the shielding plate 20 away from the SiC drive module 40, the three-phase AC module 60, and the EMC filter module 50, and the four form electromagnetic isolation from each other, thus... Electromagnetic interference in the power controller assembly 100 is reduced, EMC performance is significantly improved, and the electromagnetic compatibility of the integrated power system 200 is enhanced. Simultaneously, by closely arranging the SiC drive module 40, three-phase AC module 60, and EMC filter module 50 with the cooling module 30, and with the cooling module 30 having a large contact area with these components, the heat dissipation capacity of the power controller assembly 100 is improved, thereby enhancing the heat dissipation capacity of the integrated power system 200. Furthermore, the modular design of each component in the power controller assembly 100 makes the assembly of the integrated power system 200 more convenient.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A power controller assembly, characterized in that, Integrated powertrain systems for automobiles include control boards, shielding boards, cooling modules, SiC drive modules, three-phase AC modules, and EMC filter modules. The control board is mounted on one side of the shielding plate; The cooling module and the shielding plate are provided with an isolation wall. The cooling module is arranged on the other side of the shielding plate and forms at least three cavities with the shielding plate through the isolation wall. The SiC drive module, the three-phase AC module, and the EMC filter module are respectively arranged in different cavities and are in contact with the cooling module. The isolation wall includes a first isolation wall and a second isolation wall; the first isolation wall is vertically arranged on one side of the shielding plate, the control board is arranged inside the first isolation wall, and the outer side of the first isolation wall and the cooling module form a first cavity for arranging the three-phase AC module; the second isolation wall is vertically arranged on the cooling module, and the two sides of the second isolation wall and the shielding plate and the cooling module respectively form a second cavity and a third cavity, the SiC drive module is arranged in the second cavity, and the EMC filter module is arranged in the third cavity; wherein, the first cavity and the second cavity are adjacent; The shielding plate is also used to form a fourth cavity with the housing of the integrated power system for accommodating the control plate.

2. The power controller assembly according to claim 1, characterized in that, It also includes a bus capacitor, which is attached to the side of the cooling module away from the shielding plate and is electrically connected to the EMC filter module. The bus capacitor is also electrically connected to the SiC drive module; The three-phase AC module is electrically connected to the SiC drive module and is used to supply three-phase AC power to the motor assembly. The SiC drive module is equipped with a low-voltage plug-in, which is electrically connected to the control board to control the power of the SiC drive module.

3. The power controller assembly according to claim 2, characterized in that, It also includes a DC module, which is connected to the EMC filter module and is used to connect to a DC power supply for power supply.

4. The power controller assembly according to claim 3, characterized in that, The EMC filter module includes a mounting base, two Y capacitors, two nanocrystalline magnetic rings, a DC bus copper bus, and a grounding copper bus. The mounting base is arranged at intervals with the DC bus copper bus, and the mounting base is connected to the DC module; Two nanocrystalline magnetic rings are spaced apart on the fixed base and the DC bus copper bus; The two Y capacitors are arranged between the two nanocrystalline magnetic rings; The grounding copper busbar is adjacent to the Y capacitor and is connected to the cooling module in close contact; The DC bus copper busbar is connected to the bus capacitor to deliver DC power to the bus capacitor.

5. The power controller assembly according to claim 4, characterized in that, The isolation wall also includes a third isolation wall, which is horizontally arranged on the shielding plate. The shielding plate, the third isolation wall, the second isolation wall, and the cooling module form a third cavity, and the EMC filter module is arranged in the third cavity.

6. The power controller assembly according to claim 5, characterized in that, The three-phase AC module is equipped with an installation part and a UVW three-phase AC copper busbar; The three-phase AC module is attached to the cooling module via the mounting part; The UVW three-phase AC copper busbar is fixedly connected to the mounting part and is used to connect the motor assembly.

7. The power controller assembly according to claim 6, characterized in that, The SiC drive module includes a drive board, a SiC power component, and a three-phase current sensor. The drive board is arranged on the side close to the shielding plate, and the side away from the shielding plate is closely connected to the SiC power component and the three-phase current sensor; The three-phase current sensor is adjacent to the EMC filter module.

8. An integrated power system, characterized in that, Includes the power controller assembly as described in any one of claims 1 to 7, and further includes a motor assembly and a housing; The power controller assembly and the motor assembly are integrated within the housing and are electrically connected to the motor assembly; The housing and the shielding plate form a fourth cavity for accommodating the control board; The housing, together with the shielding plate and the cooling module, forms the first cavity, the second cavity, and the third cavity, to respectively house the three-phase AC module, the SiC drive module, and the EMC filter module.

9. A car, characterized in that, Including the integrated power system as described in claim 8.

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