A steer-by-wire actuator power pack and method of assembly thereof

Abstract

The application relates to a drive-by-wire steering actuator power package device and an assembling method thereof. The drive-by-wire steering actuator power package device comprises a six-phase double-winding motor, a circuit board assembly, a busbar, a filter plate and a shell, wherein the circuit board assembly comprises an upper control plate, a semi-flexible plate and a lower driving plate which are sequentially connected, the busbar comprises a busbar base plate and a whole vehicle signal connector, a sensor signal connector and a whole vehicle power supply connector which are arranged above the busbar base plate, the filter plate comprises a filter plate base plate and an inductor which are arranged above the filter plate base plate, and the upper portion of the shell is provided with a whole vehicle signal interface, a sensor signal interface and a whole vehicle power supply interface. The drive-by-wire steering actuator power package device is more compact in structure, the assembling process is simplified, and the overall volume of the device is reduced.

Description

Technical Field

[0001] This invention relates to the field of electric drive technology; specifically, it relates to a power pack device for a steer-by-wire actuator and its assembly method. Background Technology

[0002] With the rapid development of intelligent technology, the requirements for intelligent and safe driving are becoming increasingly stringent. As a core technology of intelligent driving, steer-by-wire will bring a better driving experience in the future through technological innovation. In existing technologies, the failure rate of conventional steering systems is usually 700 or 500 fits, which cannot meet the needs of Level 2 and above intelligent driving, while the failure rate of steer-by-wire systems can reach 10 fits.

[0003] Low failure rate requires redundant backup of the controller. The entire steer-by-wire control system consists of circuit board assemblies with two power supply connections, two vehicle communication connections, two torque sensor connections, a six-phase redundant motor, and two sets of redundant circuits. Such redundancy design results in a relatively large size for the steer-by-wire device. In order to improve space utilization in the overall vehicle layout, the requirements for steer-by-wire devices in terms of component integration, structural compactness, and size reduction are becoming increasingly stringent. Summary of the Invention

[0004] In view of this, the present invention provides a power pack device for a steer-by-wire actuator and an assembly method thereof, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] To achieve the aforementioned objectives, a first aspect of the present invention provides a power pack device for a steer-by-wire actuator, the device comprising a six-phase dual-winding motor, a circuit board assembly, a busbar, a filter board, and a housing, wherein...

[0006] The circuit board assembly includes an upper control board, a semi-flexible board, and a lower drive board connected in sequence. The busbar includes a busbar base plate and vehicle signal connectors, sensor signal connectors, and vehicle power connectors disposed above the busbar base plate. The filter board includes a filter board base plate and an inductor disposed above the filter board base plate. The upper part of the housing is provided with a vehicle signal interface, a sensor signal interface, and a vehicle power interface.

[0007] The lower drive plate is positioned above the six-phase dual-winding motor and is electrically connected to the six-phase dual-winding motor.

[0008] The upper control board is mounted above the lower drive board via the flipping of the semi-flexible plate. The busbar is positioned above the upper control board, and the filter board is positioned above the busbar.

[0009] The upper control board is electrically connected to the vehicle signal connector and the sensor signal connector, respectively.

[0010] The filter board is electrically connected to the vehicle power connector.

[0011] The lower drive board is electrically connected to the filter board.

[0012] The housing covers the upper part of the six-phase dual-winding motor. The circuit board assembly, the busbar and the filter board are all located inside the housing. The vehicle signal connector is inserted into the vehicle signal interface, the sensor signal connector is inserted into the sensor signal interface, and the vehicle power connector is inserted into the vehicle power interface.

[0013] In the aforementioned steer-by-wire actuator power pack device, optionally, the device further includes a power adapter, which is electrically connected to the lower drive plate via a bottom connector and to the filter plate via a top connector, and the power adapter is located inside the housing. In the aforementioned steer-by-wire actuator power pack device, optionally, the filter plate substrate is a flat plate.

[0014] In the aforementioned steer-by-wire actuator power pack device, optionally, the busbar base plate is a planar plate, and the busbar base plate, the vehicle signal connector, the sensor signal connector, and the vehicle power connector are integrated inserts injection molded together.

[0015] In the aforementioned steer-by-wire actuator power pack, optionally, the upper control plate and the lower drive plate are both rigid plates, and the semi-flexible plate is a flexible plate that can be folded 180 degrees.

[0016] In the aforementioned steer-by-wire actuator power pack, optionally, the lower drive plate includes a waist-shaped hole, and the six-phase connector of the six-phase dual-winding motor is electrically connected to the lower drive plate through the waist-shaped hole.

[0017] In the aforementioned steer-by-wire actuator power pack device, optionally, the upper control board includes circular holes for vehicle signals and circular holes for sensor signals, the filter board base plate includes oblong holes for vehicle power supply, the vehicle signal connector is electrically connected to the upper control board through the circular holes for vehicle signals, the sensor signal connector is electrically connected to the upper control board through the circular holes for sensor signals, and the vehicle power connector is formed by three L-shaped bends into a spatial shape consisting of a first vertical segment, a first horizontal segment, a second horizontal segment, and a second vertical segment connected sequentially, wherein the first vertical segment and the second vertical segment are in the same direction, the first horizontal segment and the second horizontal segment are coplanar, and the vehicle power connector is electrically connected to the filter board base plate through the oblong holes for vehicle power supply. In the power pack device of the steer-by-wire actuator described above, optionally, a protruding post is provided at the upper edge of the six-phase dual-winding motor, and through holes that cooperate with the protruding post are provided at the edges of the upper control plate and the busbar base plate. The protruding post passes through the through holes at the edges of the upper control plate and the busbar base plate in sequence, and the six-phase dual-winding motor, the upper control plate and the busbar are fixedly connected in sequence by screws.

[0018] In the aforementioned steer-by-wire actuator power pack device, optionally, the lower drive plate is fixedly connected to the six-phase dual-winding motor by screws, and the filter board base plate is fixedly connected to the busbar base plate by screws.

[0019] To achieve the foregoing objective, a second aspect of the present invention provides an assembly method suitable for a power pack device of a steer-by-wire actuator as described above, the method comprising:

[0020] Step 1: Electrically connect the vehicle signal connector and sensor signal connector on the busbar to the circuit board assembly;

[0021] Step 2: Apply thermally conductive adhesive to the upper part of the six-phase dual-winding motor, fix it to the lower drive plate, and make an electrical connection between the six-phase connector of the six-phase dual-winding motor and the lower drive plate.

[0022] Step 3: Fold the semi-flexible plate 180 degrees and fix the filter plate to the busbar.

[0023] Step 4: Connect the filter board to the vehicle power connector and the lower drive board respectively;

[0024] Step 5: Install the housing on the upper part of the six-phase dual-winding motor and seal it with sealant;

[0025] Step Six: Seal the vehicle signal connector to the vehicle signal interface, the sensor signal connector to the sensor signal interface, and the vehicle power connector to the vehicle power interface using potting compound.

[0026] The power pack device of the steer-by-wire actuator of this invention employs a six-phase dual-winding motor and a redundant circuit design, enabling the device to continue providing power assistance even if a part of the circuit fails. The device is cylindrical in shape, with two circuit boards connected by a semi-flexible plate to form a single unit. Power is supplied to the lower drive board via a filter board and a power adapter, making the steer-by-wire device more compact, simplifying the assembly process, and reducing the overall size of the device.

[0027] In optional embodiments, the present invention electrically connects the lower drive board and the filter board via a power adapter, and uses a flat plate as the filter board substrate, further reducing the axial dimension of the device, simplifying the assembly process, and lowering the production cost of the device. In other optional embodiments, the busbar of the present invention is an integrated insert injection molded component, saving mold costs and installation space.

[0028] The present invention further provides an assembly method for a power pack device of a steer-by-wire actuator, and therefore this assembly method also has the above-mentioned advantages. Attached Figure Description

[0029] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0030] Figure 1 This is an exploded view of one embodiment of the power pack device for the steer-by-wire actuator of the present invention.

[0031] Figure 2 This is one of the structural and assembly schematic diagrams of an embodiment of the power pack device for the steer-by-wire actuator of the present invention.

[0032] Figure 3 This is the second schematic diagram of the structure and assembly of an embodiment of the power pack device for the steer-by-wire actuator of the present invention.

[0033] Figure 4 This is the third schematic diagram showing the structure and assembly of an embodiment of the power pack device for the steer-by-wire actuator of the present invention.

[0034] Figure 5 The fourth schematic diagram shows the structure and assembly of an embodiment of the power pack device for the steer-by-wire actuator of the present invention.

[0035] Figure 6This is the fifth schematic diagram showing the structure and assembly of an embodiment of the power pack device for the steer-by-wire actuator of the present invention.

[0036] Figure 7 This is a structural cross-sectional view of an embodiment of the power pack device for the steer-by-wire actuator of the present invention.

[0037] Figure 8 This is a structural schematic diagram of one embodiment of the vehicle power connector of the present invention.

[0038] Reference numerals: 1-Six-phase dual-winding motor; 2-Circuit board assembly; 3-Power adapter; 4-Busbar; 5-Filter board; 6-Housing; 7-Ventilator plug; 11-Six-phase connector; 12-Extending post; 13-Surrounding groove; 14-Magnetic reluctance sensor magnet; 21-Upper control board; 22-Lower drive board; 23-Semi-flexible board; 211-Vehicle signal circular hole; 212-Sensor signal circular hole; 221-Oval hole; 222-Sensing chip; 31-Bottom connector; 32 - Top connector; 41- Vehicle signal connector; 42- Sensor signal connector; 43- Vehicle power connector; 431- First vertical section; 432- First horizontal section; 433- Second horizontal section; 434- Second vertical section; 44- Busbar base plate; 51- Surface mount differential mode inductor; 52- Filter board base plate; 61- Surrounding rib; 62- Housing clip; 63- Vehicle signal interface; 64- Sensor signal interface; 65- Vehicle power interface; 66- Housing boss; 67- Sealing ring. Detailed Implementation

[0039] Referring to the accompanying drawings and specific embodiments, the structure, composition, features, and advantages of the steer-by-wire actuator power pack device of the present invention will be described below by way of example; however, all descriptions should not be construed as limiting the present invention in any way.

[0040] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various figures, the present invention still allows for any combination or deletion of these technical features (or their equivalents) without any technical obstacle, and thus these further embodiments according to the present invention should also be considered within the scope of this description.

[0041] It should also be noted that the terms "upper," "lower," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship of the power pack device of the steer-by-wire actuator shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0043] Figure 1 As shown in the figure, in one embodiment of the power pack device for the steer-by-wire actuator of the present invention, the power pack device for the steer-by-wire actuator of the present invention arranges the six-phase dual-winding motor 1, the circuit board assembly 2, the power adapter 3, the busbar 4, and the filter board 5 in this sequential order. A housing 6 covers the upper part of the six-phase dual-winding motor 1, and houses the circuit board assembly 2, the power adapter 3, the busbar 4, and the filter board 5 inside the housing 6. A vent plug 7 is also connected to the upper part of the housing 6.

[0044] The six-phase dual-winding motor used in this device is a redundant motor, with two independent three-phase windings mounted on the same stator and sharing the same rotor. Compared to ordinary three-phase motors, the six-phase dual-winding motor has higher fault tolerance and stability. When three phases fail, the other three phases can still provide assistance, thereby improving the functional safety level of the steer-by-wire system.

[0045] from Figure 2 As can be seen, the circuit board assembly 2 includes an upper drive board 21, a semi-flexible board 23, and a lower drive board 22, which are connected by the semi-flexible board 23. In an optional embodiment, the semi-flexible board 23 is a flexible board that can be bent 180 degrees, causing the lower drive board 22 to flip and be positioned below the upper drive board 21. In other optional embodiments, both the upper drive board 21 and the lower drive board 22 are rigid boards, providing better support for other components in the power pack of the steering-by-wire actuator.

[0046] The lower drive plate 22 has three oblong holes 221 on each side, combined with Figure 3 As can be seen, the lower drive plate 22 can be electrically connected to the six-phase connectors 11 on both sides of the six-phase dual-winding motor 1 through the waist-shaped hole 221. It should be noted that the present invention does not limit the specific method of electrical connection. Soldering, press-fitting, or other methods can be selected according to actual working conditions and requirements, as long as a safe and stable electrical connection can be achieved while reducing the overall size.

[0047] The bottom connector 31 of the power adapter 3 is electrically connected to the lower drive board 22, such as... Figure 5As shown, the top connector 32 at the other end of the power adapter 3 is electrically connected to the filter board substrate 52. The power adapter 3 forms a path between the lower drive board 22 and the filter board 5, for transmitting the filtered current to the lower drive board 22 for power supply.

[0048] like Figure 2 and Figure 3 As shown, the upper control board 21 is electrically connected to the busbar 4. Two sets of redundant vehicle power connectors 43, vehicle signal connectors 41, and sensor signal connectors 42 are respectively provided on the busbar base plate 44. The pins of the vehicle signal connectors 41 and sensor signal connectors 42 face upwards and downwards from the busbar base plate 44, respectively. The pins of the vehicle power connectors 43 are bent so that both ends face upwards from the busbar base plate 44.

[0049] In such Figure 8 In the illustrated embodiment, the vehicle power connector 43 can undergo three L-shaped bends to form a spatial shape consisting of a first vertical segment 431, a first horizontal segment 432, a second horizontal segment 433, and a second vertical segment 434 connected sequentially, so that both ends of the vehicle power connector 43 face upwards towards the busbar substrate 44. As shown, the vehicle power connector 43 includes two sets of redundant connectors. In each set of connectors, the first vertical segment 431 and the first horizontal segment 432 are perpendicular to each other, the first horizontal segment 432 and the second horizontal segment 433 are perpendicular to each other and coplanar, the second horizontal segment 433 and the second vertical segment 434 are perpendicular to each other, and the first vertical segment 431 and the second vertical segment 434 are in the same direction. The two sets of connectors are arranged on the same straight line, and the first vertical segment 431 of each set is bent towards the center of the vehicle power connector 43 to form the first horizontal segment 432. This bending method makes the arrangement of the second vertical segments 434 more compact, reducing the contact area required for electrical connection with the filter plate 5, thereby further reducing the overall size of the device.

[0050] The upper control board 21 is provided with two sets of circular holes 211 for vehicle signals and 212 for sensor signals. The vehicle signal connector 41 is electrically connected to the upper control board 21 through the circular holes 211, and the sensor signal connector 42 is electrically connected to the upper control board 21 through the circular holes 212. Soldering or press-fit electrical connections can be used here, making the structural relationship between components simple and compact.

[0051] In an optional embodiment, the busbar substrate 44 can be a flat plastic plate, and it is integrated with the vehicle power connector 43, vehicle signal connector 41, and sensor signal connector 42 using an insert injection molding process. Specifically, these metal connectors are first precisely positioned and fixed in the corresponding positions of the mold, then plastic is injected and molded. After mold opening, a busbar substrate 44 with connectors embedded inside is formed. The busbar substrate 44 and these metal connectors constitute an integrated busbar 4.

[0052] In a further optional embodiment, the power adapter 3 can also be an integrated component formed by insert injection molding. Such an integrated structure simplifies the manufacturing and installation process and further reduces the size of the device.

[0053] from Figure 3 It can be seen that the lower drive plate 22 is not only electrically connected to the six-phase connector 11 of the six-phase dual-winding motor 1, but also fixedly connected to the upper part of the six-phase dual-winding motor 1 through screws on the lower drive plate 22. In other optional embodiments, different fixing connection methods can also be used, such as buckles, locking pins, etc., as long as the stability of the connection between components can be enhanced.

[0054] Folding the semi-flexible plate 23 180 degrees can move the upper control plate 21 and busbar 4 to a position above the lower drive plate 22, forming a shape as shown. Figure 4 The structure shown.

[0055] The six-phase dual-winding motor 1 has four protruding posts 12 at its upper edge. Through holes matching the position and shape of the protruding posts 12 are provided on the edges of both the upper control plate 21 and the busbar base plate 44. Figure 5 As shown, the protruding posts 12 pass through the through holes on the upper control plate 21 and the busbar base plate 44 in sequence, and are fastened with screws to form a fixed connection between the six-phase dual-winding motor 1, the upper control plate 21, and the busbar 4. This invention does not limit the number, position, shape, or connection method of the protruding posts.

[0056] from Figure 5 As can be seen, in this embodiment, the filter board 5 includes a pair of surface-mount differential mode inductors 51 and a filter board substrate 52. The surface-mount differential mode inductors 51 are disposed above the filter board substrate 52, and the filter board substrate 52 is disposed above the busbar 4. The filter board substrate 52 is fixedly connected to the busbar substrate 44 by screws. In other optional embodiments, other inductor types and different fixing connection methods can also be used.

[0057] Apart from Figure 5The inductor and filter board substrate 52 shown in the figure are included. The filter board 5 also includes other necessary components (not shown) that constitute the filter circuit to achieve a complete filtering function. Other necessary components include resistors, capacitors, etc., which can be set according to the actual circuit diagram and requirements.

[0058] Both ends of the filter board substrate 52 have oblong holes. One end of the filter board substrate 52 is electrically connected to the bent vehicle power connector 43 through the oblong hole, and the other end is electrically connected to the top connector 32 of the power adapter 3 through the oblong hole. The filter board 5 is used to filter the DC voltage of the vehicle power supply and transmit the processed DC power to the lower drive board 22 through the power adapter 3.

[0059] In an optional embodiment, the filter substrate 52 is a planar plate, which can be made of FR-4 resin material and copper foil material through a lamination and lamination process. The present invention does not limit the specific materials and processes. The filter substrate 52 is connected to the surface-mount differential mode inductor 51 disposed thereon by soldering. The surface-mount differential mode inductor 51 is a small-volume inductor element, which is fixed to the filter substrate 52 by soldering. This not only simplifies the process but also further reduces the axial dimensions and overall volume of the drivetrain actuator power pack device of the present invention.

[0060] By connecting the housing 6 to the upper part of the six-phase dual-winding motor 1, the following can be obtained: Figure 6 The structure shown is shown.

[0061] The lower edge of the housing 6 may be provided with a raised peripheral rib 61 and a housing latch 62. Figure 3 As can be seen, the upper edge of the six-phase dual-winding motor 1 is provided with a peripheral groove 13 that mates with the peripheral rib 61 and a positioning element that mates with the housing buckle 62. The housing buckle 62 and the positioning element cooperate with each other to fix the housing 6 and the six-phase dual-winding motor 1 in a fixed connection. At this time, the peripheral rib 61 is pressed into and fills the interior of the peripheral groove 13, further securing and sealing the housing 6 and the six-phase dual-winding motor 1.

[0062] The upper part of the housing 6 is provided with a housing boss 66, which matches the shape of the vent plug 7. Figure 7 As can be seen, a sealing ring 67 is provided on the vent plug 7. In an optional embodiment, the vent plug 7 can be pressed into the interior of the housing boss 66 and connected to the housing boss 66 by a snap-fit. The sealing ring 67 can tightly fit into the internal cavity of the housing boss 66, sealing it and forming protection for the interior of the housing.

[0063] The upper part of the housing 6 also includes a redundantly configured vehicle signal interface 63, sensor signal interface 64 and vehicle power interface 65, which are respectively clearance-fitted with the shape and position of the vehicle signal connector 41, sensor signal connector 42 and vehicle power connector 43.

[0064] After the housing 6 is assembled and connected to the six-phase dual-winding motor 1, the vehicle signal connector 41 can pass through the housing 6 and be inserted into the vehicle signal interface 63, the sensor signal connector 42 can pass through the housing 6 and be inserted into the sensor signal interface 64, and the vehicle power connector 43 can pass through the housing 6 and be inserted into the vehicle power interface 65. Thus, the vehicle signal interface 63, the sensor signal interface 64, and the vehicle power interface 65 can be electrically connected to external vehicle signal harness connectors, sensor signal harness connectors, and vehicle power harness connectors, respectively.

[0065] like Figure 6 As shown, snap-fit ​​devices can also be provided on the outer side of these interfaces to facilitate secure connection with external wiring harness connectors. In other alternative embodiments, different fixing methods can be used for the interfaces on housing 6 and external wiring harness connectors.

[0066] In optional embodiments, the mating points of the vehicle signal connector 41 and the vehicle signal interface 63, the mating points of the sensor signal connector 42 and the sensor signal interface 64, and the mating points of the vehicle power connector 43 and the vehicle power interface 65 are all sealed with potting compound. In other optional embodiments, other sealing methods can also be used, as long as they can protect the electrical components within the device of the present invention. Such sealing protection further improves the effectiveness and stability of the device during use.

[0067] from Figure 7 As can be seen from the structural cross-sectional view, a magnetoresistive sensor magnet 14 is mounted on the central shaft of the six-phase dual-winding motor 1, and a sensing chip 222 is mounted at the corresponding position on the lower drive plate 22. The magnetoresistive sensor magnet 14 is a permanent magnet alloy that rotates with the central shaft of the six-phase dual-winding motor 1 to provide a bias magnetic field. The sensing chip 222 senses the magnetoresistive sensor magnet 14 in real time and thereby analyzes and obtains the torque-related information of the six-phase dual-winding motor 1. This torque-related information is an important component of the sensor signals in the steer-by-wire system.

[0068] Combination Figures 2 to 6As can be seen, the power pack device for the steer-by-wire actuator of the present invention has a simple and convenient assembly process. First, the vehicle signal connector 41 and sensor signal connector 42 in the busbar 4 are electrically connected to the upper control board 21. In the illustrated embodiment, the power adapter 3 is also electrically connected to the lower drive board 22. Second, thermally conductive adhesive is applied to the upper part of the six-phase dual-winding motor 1, and the lower drive board 22 is fixedly connected to the six-phase dual-winding motor 1 and electrically connected through the six-phase connector. Subsequently, the semi-flexible plate 23 is folded 180 degrees, the filter plate 5 is fixedly connected to the busbar 4, and electrically connected to the vehicle power connector 43 in the busbar 4. In the illustrated embodiment, the filter plate 5 is also electrically connected to the power adapter 3. Finally, the housing 6 is sealed and installed on the upper part of the six-phase dual-winding motor 1 with sealant, and the interfaces on the housing 6 are sealed with potting compound. A vent plug 7 is installed on the housing boss 66. This invention not only simplifies the production and assembly process, but also reduces labor and monetary costs, giving it an advantage in mass production.

[0069] Overall, the power pack device of the steer-by-wire actuator of the present invention is cylindrical, with its radial dimension adapted to the size of the six-phase dual-winding motor 1. The axial dimension is reduced by the arrangement of components and the assembly process. While forming a stable connection and sealing protection for the internal components, the volume of the device is reduced, and the utilization rate and adaptability of the power pack device of the steer-by-wire actuator to the overall vehicle space environment are improved.

[0070] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. A power pack device for a steer-by-wire actuator, characterized in that, The device includes a six-phase dual-winding motor (1), a circuit board assembly (2), a busbar (4), a filter board (5), and a housing (6), wherein, The circuit board assembly (2) includes an upper control board (21), a semi-flexible board (23), and a lower drive board (22) connected in sequence. The busbar (4) includes a busbar base plate (44) and a vehicle signal connector (41), a sensor signal connector (42), and a vehicle power connector (43) disposed on the busbar base plate (44). The filter board (5) includes a filter board base plate (52) and an inductor disposed on the filter board base plate (52). The upper part of the housing (6) is provided with a vehicle signal interface (63), a sensor signal interface (64), and a vehicle power interface (65). The lower drive plate (22) is disposed above the six-phase dual-winding motor (1) and is electrically connected to the six-phase dual-winding motor (1). The upper control board (21) is mounted above the lower drive board (22) by flipping the semi-flexible plate (23), the busbar (4) is mounted above the upper control board (21), and the filter board (5) is mounted above the busbar (4). The upper control board (21) is electrically connected to the vehicle signal connector (41) and the sensor signal connector (42) respectively. The filter board (5) is electrically connected to the vehicle power connector (43). The lower drive board (22) is electrically connected to the filter board (5). The housing (6) covers the upper part of the six-phase dual-winding motor (1). The circuit board assembly (2), the busbar (4) and the filter board (5) are all located inside the housing (6). The vehicle signal connector (41) is inserted into the vehicle signal interface (63), the sensor signal connector (42) is inserted into the sensor signal interface (64), and the vehicle power connector (43) is inserted into the vehicle power interface (65).

2. The power pack device for the steer-by-wire actuator as described in claim 1, characterized in that, The device also includes a power adapter (3), which is electrically connected to the lower drive plate (22) via a bottom connector (31) and to the filter plate (5) via a top connector (32). The power adapter (3) is located inside the housing (6).

3. The power pack device for the steer-by-wire actuator as described in claim 1, characterized in that, The filter board substrate (52) is a flat plate.

4. The power pack device for the steer-by-wire actuator as described in claim 1, characterized in that, The busbar base plate (44) is a flat plate, and the busbar base plate (44), the vehicle signal connector (41), the sensor signal connector (42), and the vehicle power connector (43) are integrated inserts by injection molding.

5. The power pack device for the steer-by-wire actuator as described in claim 1, characterized in that, The upper control plate (21) and the lower drive plate (22) are both rigid plates, and the semi-flexible plate (23) is a flexible plate that can be folded 180 degrees.

6. The power pack device for the steer-by-wire actuator as described in claim 1, characterized in that, The lower drive plate (22) includes a waist-shaped hole (221), and the six-phase connector (11) of the six-phase dual-winding motor (1) is electrically connected to the lower drive plate (22) through the waist-shaped hole (221).

7. The power pack device for the steer-by-wire actuator as described in claim 1, characterized in that, The upper control board (21) includes a circular hole (211) for vehicle signals and a circular hole (212) for sensor signals. The filter board substrate (52) includes a waist-shaped hole for vehicle power supply. The vehicle signal connector (41) is electrically connected to the upper control board (21) through the circular hole (211) for vehicle signals. The sensor signal connector (42) is electrically connected to the upper control board (21) through the circular hole (212) for sensor signals. The power supply connector (43) is formed by three L-shaped bends to create a spatial shape consisting of a first vertical segment (431), a first horizontal segment (432), a second horizontal segment (433), and a second vertical segment (434) connected in sequence. The first vertical segment (431) and the second vertical segment (434) are in the same direction, and the first horizontal segment (432) and the second horizontal segment (433) are coplanar. The vehicle power supply connector (43) is electrically connected to the filter board substrate (52) through the vehicle power supply waist-shaped hole.

8. The power pack device for the steer-by-wire actuator as described in claim 1, characterized in that, The upper edge of the six-phase dual-winding motor (1) is provided with a protruding post (12). The upper control plate (21) and the busbar base plate (44) are provided with through holes that cooperate with the protruding post (12). The protruding post (12) passes through the through holes at the edges of the upper control plate (21) and the busbar base plate (44) in sequence, and the six-phase dual-winding motor (1), the upper control plate (21) and the busbar (4) are fixedly connected in sequence by screws.

9. The power pack device for a steer-by-wire actuator as described in claim 1, characterized in that, The lower drive board (22) is fixedly connected to the six-phase dual-winding motor (1) by screws, and the filter board substrate (52) is fixedly connected to the busbar substrate (44) by screws.

10. An assembly method for a power pack device of a steer-by-wire actuator as described in claim 1, characterized in that, The method includes: Step 1: Connect the vehicle signal connector (41) and sensor signal connector (42) on the busbar (4) to the circuit board assembly (2); Step 2: Apply thermally conductive adhesive to the upper part of the six-phase dual-winding motor (1), fix it to the lower drive plate (22), and make an electrical connection between the six-phase connector (11) of the six-phase dual-winding motor (1) and the lower drive plate (22). Step 3: Fold the semi-flexible plate (23) 180 degrees and fix the filter plate (5) to the busbar (4); Step 4: Connect the filter board (5) to the vehicle power connector (43) and the lower drive board (22) respectively; Step 5: Install the housing (6) on the upper part of the six-phase dual-winding motor (1) and seal it with sealant; Step 6: Seal the vehicle signal connector (41) with the vehicle signal interface (63), the sensor signal connector (42) with the sensor signal interface (64), and the vehicle power connector (43) with the vehicle power interface (65) using potting compound.

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