Electronic control unit and vehicle

Abstract

The application discloses an electronic control unit and a vehicle, and relates to the technical field of electronic control.The electronic control unit comprises a motor, a first printed circuit board, a second printed circuit board and a busbar; the motor, the first printed circuit board, the second printed circuit board and the busbar are sequentially arranged; the first printed circuit board is connected with the motor; the second printed circuit board is connected with the first printed circuit board; the busbar comprises a busbar body and a connector pin; the connector pin is embedded in the busbar body and extends from one side of the busbar body away from the second printed circuit board.The electronic control unit and the vehicle are beneficial to simplifying assembly and reducing cost.

Description

Technical Field

[0001] This disclosure relates to the field of electronic control technology, and more specifically, to an electronic control unit and a vehicle. Background Technology

[0002] In modern industrial applications such as automotive electronics, industrial automation, and robotics, electronic control units (ECUs) are the core components for intelligent control of key actuators (such as various motors). A typical ECU usually includes a control circuit board for logic operations, a power circuit board for driving the actuators, and connectors for external power and signal connections.

[0003] The electronic control unit components in related technologies are scattered, stacked in a complex manner, and have a complicated assembly process. They require a large number of mechanical fasteners such as screws and nuts to fix and connect the various components, resulting in many potential fault points and high manufacturing costs. Utility Model Content

[0004] This disclosure provides an electronic control unit and a vehicle that facilitates simplified assembly and reduces costs.

[0005] According to one aspect of this disclosure, an electronic control unit is provided, including a motor, a first printed circuit board, a second printed circuit board, and a bus.

[0006] The motor, the first printed circuit board, the second printed circuit board, and the bus are arranged in sequence; the first printed circuit board is connected to the motor; the second printed circuit board is connected to the first printed circuit board; the bus includes a bus body and connector pins;

[0007] The connector pins are embedded in the bus body and extend out from the side of the bus body away from the second printed circuit board.

[0008] In one exemplary embodiment of this disclosure, the electronic control unit includes pins that extend from the side of the bus body near the second printed circuit board and are electrically connected to the first printed circuit board.

[0009] In one exemplary embodiment of this disclosure, a reactive element is mounted on the bus body, and the reactive element is electrically connected to the connector pins and pin leads.

[0010] In one exemplary embodiment of this disclosure, a first mounting portion is provided on the bus body, and a reactor element is mounted on the bus through the first mounting portion.

[0011] In one exemplary embodiment of this disclosure, the connector pins include power pins and signal pins, both of which are embedded in the bus body and extend out of the side of the bus body away from the second printed circuit board.

[0012] In one exemplary embodiment of this disclosure, the two ends of the signal pin extend out from both sides of the bus body; a first mounting hole is provided on the second printed circuit board, and the end of the signal pin near the second printed circuit board extends into the first mounting hole and is electrically connected to the second printed circuit board.

[0013] In one exemplary embodiment of this disclosure, one end of the signal pin near the second printed circuit board forms a compressible connector; the connector passes through the first mounting hole and is compressed by the hole wall of the first mounting hole.

[0014] In one exemplary embodiment of this disclosure, a first connector is provided on the side of the bus body near the second printed circuit board. The first connector is integrally formed with the bus body, and the end of the first connector is inserted into the second printed circuit board.

[0015] In one exemplary embodiment of this disclosure, the first printed circuit board and the second printed circuit board are connected by a connecting part; the motor, the first printed circuit board, the second printed circuit board and the busbar are arranged sequentially along the motor axis.

[0016] In one exemplary embodiment of this disclosure, the connecting portion is flexible and bendable, so that the first printed circuit board is flip-mounted relative to the second printed circuit board; the first printed circuit board, the second printed circuit board, and the bus body are arranged parallel to each other perpendicular to the motor axis.

[0017] In one exemplary embodiment of this disclosure, a countersunk head is provided on the side of the bus body near the second printed circuit board, and a first connection hole is provided in the countersunk head; a first support column is provided on the side of the motor near the first printed circuit board, and the countersunk head abuts against the first support column; a second connection hole corresponding to the first connection hole is provided in the first support column.

[0018] In one exemplary embodiment of this disclosure, the bus body is provided with a third connection hole; the motor housing is provided with a second support post on the side near the first printed circuit board, the second support post abutting against the side of the bus body near the second printed circuit board; the second support post is provided with a fourth connection hole corresponding to the third connection hole.

[0019] In one exemplary embodiment of this disclosure, the first support columns are arranged in pairs on both sides of the connecting portion.

[0020] In one exemplary embodiment of this disclosure, the electronic control unit includes a second connector that passes through the bus body, the second printed circuit board, and the first printed circuit board, thereby mounting the bus body, the second printed circuit board, and the first printed circuit board onto the motor.

[0021] In one exemplary embodiment of this disclosure, the electronic control unit includes a second connector, which includes a first connector and a second connector, which are integrally disposed together; the first connector passes through the housing of the first printed circuit board and the motor to connect the first printed circuit board and the motor; the second connector is supported between the first printed circuit board and the second printed circuit board.

[0022] The bus body has a countersunk head on the side near the second printed circuit board, and a fifth connection hole is provided in the countersunk head; the second printed circuit board has a sixth connection hole corresponding to the fifth connection hole, and the second connection part has a seventh connection hole corresponding to the sixth connection hole.

[0023] In one exemplary embodiment of this disclosure, the second connectors are arranged in pairs on both sides of the connector.

[0024] In one exemplary embodiment of this disclosure, a first printed circuit board is provided with an adapter on the side near the second printed circuit board, and pins are connected to the adapter; the bus body has at least two sets of pins on the side near the second printed circuit board, and at least one second connector is located between the two sets of pins.

[0025] In one exemplary embodiment of this disclosure, a pin base is provided on the bus body, and a connector pin is embedded in the bus body through the pin base, with the connector pin extending out of the pin base.

[0026] In one exemplary embodiment of this disclosure, the pin base is located on the side of the bus body away from the second printed circuit board, and the connector pins extend from the side of the pin base away from the second printed circuit board.

[0027] In one exemplary embodiment of this disclosure, the second printed circuit board has a hollowed-out clearance area, and the first printed circuit board has an adapter on the side near the second printed circuit board. The pins pass through the clearance area and are connected to the adapter. The orthographic projection of the adapter on the second printed circuit board is within the clearance area.

[0028] According to another aspect, a vehicle is provided that includes the electronic control unit of any of the foregoing.

[0029] In the electronic control unit provided in this disclosure, connector pins are embedded in the bus body and extend from the top surface of the bus body. These connector pins can be used to connect to external power and signals, such as to sensor assemblies and external power supplies. This disclosure integrates all connector pins in the electronic control unit onto the bus body, thereby avoiding the need to manufacture multiple connectors separately and connect them independently to the printed circuit board. This reduces mold costs and assembly complexity, and also reduces the number of connection and fixing points, which helps reduce material quantity and lower the failure rate.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0032] Figure 1 This is a schematic diagram of an exemplary embodiment of the electronic control unit disclosed herein.

[0033] Figure 2 This is an exploded view of an exemplary embodiment of the electronic control unit of this disclosure.

[0034] Figure 3 This is a schematic diagram of a motor, a first printed circuit board, a second printed circuit board, and a bus in one exemplary embodiment of the electronic control unit of this disclosure.

[0035] Figure 4 This is a schematic diagram of a busbar in one exemplary embodiment of the electrical control unit of this disclosure.

[0036] Figure 5 This is a schematic diagram of the bus body in one exemplary embodiment of the electrical control unit of this disclosure.

[0037] Figure 6 This is a schematic diagram showing the mounting of a first printed circuit board and a second printed circuit board on a motor in one exemplary embodiment of the electronic control unit disclosed herein.

[0038] Figure 7 This is a schematic diagram showing the first printed circuit board being installed on the motor after the busbar and the second printed circuit board are connected in one exemplary embodiment of the electronic control unit of this disclosure.

[0039] Figure 8 This is a schematic diagram of a motor, a first printed circuit board, a second printed circuit board, and a bus in another exemplary embodiment of the electronic control unit of this disclosure.

[0040] Figure 9 This is a schematic diagram showing the busbar mounted on a second printed circuit board in one exemplary embodiment of the electrical control unit of this disclosure.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Motor; 11. First support column; 12. Second support column; 13. Motor pins;

[0043] 21. First printed circuit board; 211. Adapter; 22. Second printed circuit board; 23. Connecting part;

[0044] 3. Busbar; 31. Busbar body; 311. First mounting part; 312. Pin base; 313. Countersunk head; 32. Connector pin; 321. Power pin; 322. Signal pin; 33. Pin lead; 34. Reactor element;

[0045] 41. First connector; 42. Second connector;

[0046] 5. Sealing cover; 51. Vent valve; 52. Connecting end; 53. Potting compound curing layer. Detailed Implementation

[0047] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0048] Unless otherwise specified or stated, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “a,” “an,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “comprising” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to those listed; the terms “first” and “second” are used only as illustrative marks and are not intended to limit the number, importance, or order of the objects.

[0049] The terms “connection” and “fixation” should be interpreted broadly. For example, unless otherwise specified, “connection” can be a fixed connection, a movable connection, an integral connection, or a detachable connection. It can be a direct connection or an indirect connection through an intermediate medium.

[0050] Furthermore, in this application, directional terms such as "upper" and "lower" are used only to indicate relative positional relationships. For example, for convenience, they are defined relative to the indicated placement of components in the accompanying drawings. For instance, taking the bus 3, second printed circuit board 22, first printed circuit board 21, and motor 1 arranged from top to bottom as an example, the top surface of motor 1 refers to the side closer to the first printed circuit board 21, and the bottom surface of bus 3 refers to the side closer to the second printed circuit board 22; the same applies to other orientations. It should be understood that these directional terms are relative concepts and can change accordingly depending on the placement of components in the accompanying drawings.

[0051] This disclosure provides an electronic control unit (ECU) applicable to fields such as automotive electronics, industrial automation, and robotics. For example, the ECU provided can be applied to an electric power steering (EPS) system. An EPS system is a power steering system that provides torque via an electric motor. Compared to traditional mechanical hydraulic steering mechanisms, it adds a signal sensor assembly and an ECU. EPS systems typically have redundancy; if one path fails, the system can still provide steering power to ensure safe vehicle steering. The ECU provided in this disclosure can be a redundant motor controller for an EPS system. In the following description, this disclosure uses the example of a redundant motor controller for an EPS system as the ECU for illustration.

[0052] This disclosure provides an electronic control unit, including a motor 1, a first printed circuit board 21, a second printed circuit board 22, and a bus 3. (See reference) Figures 1 to 3 As shown, Figure 1 A schematic diagram of the entire electronic control unit is shown. Figure 2 An exploded view of the electronic control unit is shown. Figure 3 A schematic diagram of motor 1, first printed circuit board 21, second printed circuit board 22 and bus 3 is shown.

[0053] Motor 1, first printed circuit board 21, second printed circuit board 22, and bus 3 are arranged sequentially; first printed circuit board 21 is connected to motor 1; second printed circuit board 22 is connected to first printed circuit board 21. Bus 3 includes bus body 31 and connector pins 32. The connector pins 32 are embedded in bus body 31 and extend out from the side of bus body 31 away from second printed circuit board 22.

[0054] In the electronic control unit provided in this disclosure, connector pins 32 are embedded within the bus body 31 and extend from the top surface of the bus body 31. These connector pins 32 can be used to connect to external power and signals, such as to a sensor assembly and an external power supply. Embodiments of this disclosure integrate each connector pin 32 in the electronic control unit onto the bus body 31, thereby avoiding the need to manufacture multiple connectors separately and connect them independently to the printed circuit board. This reduces mold costs and assembly complexity, and also reduces the number of connection and fixing points, which helps reduce material quantity and lower the failure rate.

[0055] Specifically, the bus body 31 can be injection molded from plastic material, and the connector pin 32 can be integrally molded with the bus body 31 by insert injection molding, which improves the integration of the bus, reduces the assembly complexity, and helps to reduce the overall mold opening cost and improve dimensional accuracy.

[0056] refer to Figures 1 to 2 As shown, the electronic control unit may include a sealing cover 5, which can be fastened to the top of the motor 1 and houses the first printed circuit board 21, the second printed circuit board 22, and the busbar 3 within the cavity of the sealing cover 5. The sealing cover 5 can be locked to the motor 1 by connecting screws. The sealing cover 5 may be made of plastic material and may be equipped with a vent valve 51. The vent valve 51 serves to prevent water and dust from entering the cavity and facilitates the discharge of high temperatures from the cavity of the sealing cover 5, thereby extending the service life of the electronic control unit.

[0057] In one implementation, reference Figure 1 As shown, the sealing cover 5 is also provided with a plug-in end 52. Multiple plug-in ends 52 can be provided, and each corresponds to a connector pin 32. The plug-in end 52 can protect the connector pins 32 that protrude from the top surface of the bus body 31 through the sealing cover 5. The outer wall of the plug-in end 52 can be provided with a connecting buckle for connecting to the mating terminals on the power supply and the sensor.

[0058] The electronic control unit may include pin 33, as shown in the reference. Figure 3 As shown, the pin 33 extends from the side of the bus body 31 near the second printed circuit board 22 and is electrically connected to the first printed circuit board 21. In this exemplary embodiment, the connector pin 32 can be electrically connected to the first printed circuit board 21 through the pin 33 extending from the bottom surface of the bus body 31, which can further reduce the number of connectors and reduce the number of connection and fixing points.

[0059] For example, the connector pins 32 may include a power pin 321 and a signal pin 322, both of which are embedded within the bus body 31 and extend from the side of the bus body 31 away from the second printed circuit board 22. (See reference...) Figure 3 , Figure 4 As shown, Figure 4 A schematic diagram of a bus in an exemplary embodiment is shown. A power pin 321 is electrically connected to a pin 33. The portion of the power pin 321 extending beyond the top surface of the bus body 31 can extend into a corresponding connector 52 for connection to an external power source. Two ends of a signal pin 322 extend from opposite sides of the bus body 31. A first mounting hole is provided on a second printed circuit board 22. The end of the signal pin 322 closest to the second printed circuit board 22 can extend into the first mounting hole and be electrically connected to the second printed circuit board 22. This exemplary embodiment allows the power pin 321 and signal pin 322 to be separated from the plastic frame, reducing material quantity and manufacturing costs compared to connecting each connector independently to the printed circuit board.

[0060] In some embodiments, the signal pin 322 can be soldered into the first mounting hole to achieve an electrical connection with the second printed circuit board 22. In some embodiments, the end of the signal pin 322 closest to the second printed circuit board 22 forms a compressible connector; the connector passes through the first mounting hole and is compressed by the hole wall to achieve an electrical connection with the second printed circuit board 22. Specifically, the connector may have an elliptical hole, which allows for elastic deformation when inserted into the first mounting hole, forming a reliable connection. This allows for higher clamping force with a smaller insertion force, reducing production costs and assembly time. Furthermore, the solderless connection between the signal pin 322 and the second printed circuit board 22 also helps reduce connection impedance.

[0061] Electrical connection. For example, the second printed circuit board 22 is electrically connected to the first printed circuit board 21 via pins. Exemplarily, the first printed circuit board 21 and the second printed circuit board 22 can be connected via a connecting portion 23, which can be a printed circuit board and can be located on one side of both the first printed circuit board 21 and the second printed circuit board 22. (See reference) Figure 2 , Figure 6 As shown, Figure 6 A schematic diagram is shown of mounting a first printed circuit board 21 and a second printed circuit board 22 on a motor 1. The connecting portion 23 is flexibly bendable so that the first printed circuit board 21 can be flipped relative to the second printed circuit board 22; the first printed circuit board 21, the second printed circuit board 22 and the bus body 31 are arranged parallel to each other perpendicular to the axis of the motor 1.

[0062] For example, the first printed circuit board 21 and the second printed circuit board 22 can be made of rigid substrates, such as epoxy resin glass cloth (FR4) or phenolic resin paper (FR1); the connecting part 23 can be made of flexible substrates, such as polyimide (PI) or polyethylene terephthalate (PET) film. The first printed circuit board 21, the connecting part 23, and the second printed circuit board 22 are combined together by means of lamination to form a rigid-flex board. The connecting part 23 can achieve electrical connection between the first printed circuit board 21 and the second printed circuit board 22, while allowing the first printed circuit board 21 and the second printed circuit board 22 to be placed in parallel, making full use of space and reducing the area of ​​the circuit board in the electronic control unit.

[0063] The first printed circuit board 21 can be equipped with power MOSFETs to drive the motor 1, and can also have a motor current detection circuit to feed back the actual motor current to the second printed circuit board 22. The first printed circuit board 21 can also be equipped with protection circuits, such as overcurrent protection, overtemperature protection, and short-circuit protection circuits. The second printed circuit board 22 can be equipped with a microprocessor chip (MCU) and a vehicle communication CAN module, etc., to receive signals from the torque sensor, vehicle speed sensor, and steering angle sensor from the signal pin 322, calculate a precise assist torque command based on the vehicle status, and convert the torque command into a PWM drive signal to be sent to the first printed circuit board 21.

[0064] refer to Figure 4 as well as Figure 5 , Figure 5 A schematic diagram of a bus body 31 in one embodiment is shown. In an exemplary embodiment of this disclosure, the bus body 31 is provided with a first mounting portion 311, and a reactance element 34 is mounted on the first mounting portion 311. The reactance element 34 is electrically connected between the connector pin 32 and the pin lead 33.

[0065] For example, the reactive element 34 may include capacitors and inductors. The reactive element 34 has a filtering function, filtering out high-frequency noise and other interference from the vehicle's power line and preventing high-current switching noise generated inside the electronic control unit from being conducted back to the vehicle's electrical grid through the power line, thus interfering with other electronic devices. Furthermore, the reactive element 34 can also filter sensor signals entering the electronic control unit, such as torque, steering angle, and vehicle speed, removing superimposed high-frequency interference, ensuring signal quality, and improving control accuracy and reliability. It can also filter and perform impedance matching on communication signals output by the electronic control unit, such as CAN signals, improving communication stability.

[0066] This exemplary embodiment can also integrate the reactance element 34 onto the bus body 31, further improving the integration level of the bus. The reactance element 34 has pins 33 leading out from the bottom surface of the bus body 31 and is electrically connected to the first printed circuit board 21. Compared to directly connecting the reactance element 34 to the printed circuit board, this further simplifies the assembly process of the electronic control unit. For example, in some embodiments, when entering the assembly process of the electronic control unit, the bus material integrates connector pins 32 that are injection molded into one piece, the reactance element 34 is mounted on the bus body 31, and pins 33 are leading out from one side of the bus body 31. During assembly, the first printed circuit board 21 and the second printed circuit board 22 can be installed sequentially on the motor 1, and then the bus can be installed on the top of the second printed circuit board 22. The downward-extending pins 33 can be electrically connected to the first printed circuit board 21, for example, by resistance welding to the adapter 211 provided on the upper surface of the first printed circuit board 21, so that the bus can be installed inside the electronic control unit.

[0067] The bus body 31 may be provided with a pin base 312, and the connector pin 32 can be embedded in the bus body 31 through the pin base 312, with the connector pin 32 extending out of the pin base. (Reference) Figure 4 and Figure 5 As shown, the pin base 312 can be located on the side of the bus body 31 away from the second printed circuit board 22; the pin base 312 can be arranged around the connector pin 32, with the connector pin 32 extending out of the pin base 312. The pin base 312 can be integrally injection molded with the bus body 31 to protect and reinforce the root of the connector pin 32, preventing the connector pin 32 from bending and being damaged.

[0068] A first connector 41 may be provided on the side of the bus body 31 near the second printed circuit board 22. The first connector 41 is integrally formed with the bus body 31, and the end of the first connector 41 is inserted into the second printed circuit board 22.

[0069] In one exemplary embodiment of this disclosure, reference is made to Figure 2 As shown, the first connector 41 can be a positioning pin located at the bottom of the busbar body 31, which is positioned with the second printed circuit board 22 by inserting it into the corresponding positioning hole on the second printed circuit board 22.

[0070] In another exemplary embodiment of this disclosure, reference is made to Figure 7 The diagram shows a schematic of the first printed circuit board 21 being installed onto the motor 1 after the busbar and the second printed circuit board 22 have been connected. The first connector 41 can be a snap-fit ​​pin located at the bottom of the busbar body 31, which is inserted into the corresponding connection hole on the second printed circuit board 22 to achieve connection with the second printed circuit board 22.

[0071] In one exemplary embodiment of this disclosure, a countersunk head 313 is provided on the side of the bus body 31 near the second printed circuit board 22, as shown in the reference. Figure 8 As shown, the countersunk head 313 has a first connecting hole; the motor 1 has a first support post 11 on the side near the first printed circuit board 21, and the countersunk head 313 abuts against the first support post 11; the first support post 11 has a second connecting hole corresponding to the first connecting hole. When installing the busbar, bolts or other connecting parts can be passed through the first connecting hole and screwed into the second connecting hole to fix the busbar body 31 to the top of the motor 1.

[0072] refer to Figure 8 As shown, the bus body 31 may also be provided with a third connecting hole; a second support post 12 is provided on the side of the motor 1 housing near the first printed circuit board 21, and the second support post 12 abuts against the side of the bus body 31 near the second printed circuit board 22; a fourth connecting hole corresponding to the third connecting hole is provided in the second support post 12. When installing the bus, bolts or other connecting parts can be passed through the third connecting hole and screwed into the fourth connecting hole to fix the bus body 31 to the top of the motor 1.

[0073] For example, refer to Figure 8 As shown, two countersunk seats 313 are arranged in pairs on one side of the bus body 31, and two third connecting holes are arranged in pairs on the other side. Correspondingly, two first support columns 11 are arranged in pairs on one side of the top of the motor 1, and two second support columns 12 are arranged in pairs on the other side. In some embodiments, the first support columns 11 are arranged in pairs on both sides of the connecting portion 23, and the height of the first support columns 11 relative to the second support columns 12 can be shortened, thereby avoiding interference between the connecting portion 23 and the motor 1 when the second printed circuit board 22 is folded over the first printed circuit board 21. The two second support columns 12 are arranged in pairs on the side away from the connecting portion 23, and the diameter of the second support columns 12 relative to the first support columns 11 can be reduced, thereby reducing space occupation.

[0074] In one exemplary embodiment of this disclosure, reference is made to Figure 6 As shown, the first printed circuit board 21 is mounted to the motor 1 via a second connector 42. The second connector 42 includes a first connecting portion and a second connecting portion. The first connecting portion passes through the housings of both the first printed circuit board 21 and the motor 1 to connect them; the second connecting portion is supported between the first printed circuit board 21 and the second printed circuit board 22. (Reference) Figure 3As shown, the bus body 31 has a countersunk head 313 protruding on one side near the second printed circuit board 22, and the countersunk head 313 has a fifth connecting hole. The second printed circuit board 22 has a sixth connecting hole corresponding to the fifth connecting hole, and the second connecting part has a seventh connecting hole corresponding to the sixth connecting hole. When installing the bus, bolts or other connecting parts can be passed through the fifth and sixth connecting holes and screwed into the seventh connecting hole to fix the bus body 31 to the top of the second printed circuit board 22. The second connecting part 42 can not only connect the first printed circuit board 21 to the motor 1 and the bus body 31 to the second printed circuit board 22, but also provide support for the second printed circuit board 22.

[0075] In one exemplary embodiment of this disclosure, reference is made to Figure 6 As shown, the second connector 42 is provided in pairs on both sides of the connector 23 to enhance the support rigidity of the first printed circuit board 21 and the second printed circuit board 22 near the connector 23.

[0076] refer to Figure 3 , Figure 6 , Figure 7 As shown, the first printed circuit board 21 has an adapter 211 on the side near the second printed circuit board 22, and the pins 33 are connected to the adapter 211. The bus body 31 has at least two sets of pins 33 on the side near the second printed circuit board 22, and at least one second connector 42 is located between the two sets of pins 33 to enhance the support rigidity of the first printed circuit board 21 and the second printed circuit board 22 near the pins 33.

[0077] For example, refer to Figure 3 , Figure 6 , Figure 7 As shown, the second printed circuit board 22 has a hollowed-out clearance area. The first printed circuit board 21 has an adapter 211 on the side close to the second printed circuit board 22. The pin 33 passes through the clearance area and is connected to the adapter 211. The orthographic projection of the adapter 211 on the second printed circuit board 22 is within the clearance area, which facilitates the connection between the pin 33 and the adapter 211 and ensures a safe physical isolation between the pin 33 and any conductor (wire, pad, via, etc.) on the second printed circuit board 22, eliminating the risk of short circuit due to contact or close proximity.

[0078] In some implementations, the assembly process of the electronic control unit can be referred to Figure 6 , Figure 3 As shown, the first printed circuit board 21 is first installed on the top of the motor 1, then the second printed circuit board 22 is folded over, and then the bus body 31 is pressed onto the top of the second printed circuit board 22.

[0079] refer to Figure 6 The motor 1 may have motor pins 13 on its top, which can position the first printed circuit board 21. The first printed circuit board 21 can be soldered to the motor pins 13 on the top of the motor 1. A thermally conductive adhesive layer may be provided between the bottom surface of the first printed circuit board 21 and the motor 1 to promote heat dissipation of the first printed circuit board 21. After fixing the first printed circuit board 21 to the top of the motor 1 through the first connecting part of the second connector 42, the second printed circuit board 22 is folded over. After pre-fixing the position of the second printed circuit board 22 using auxiliary tooling or positioning pins, the bus body 31 is pressed onto the top of the second printed circuit board 22. (Reference) Figure 3 As shown, for example, after connecting the busbar and the second printed circuit board 22 using the first connector 41 and signal pins 322, bolts or other connectors are passed through the fifth and sixth connection holes and screwed into the seventh connection hole to fix the busbar body 31 to the top of the second printed circuit board 22. The pin leads 33 and the adapter 211 are connected by resistance welding. Then, sealant is applied to the glue groove on the top of the motor 1 housing. The sealing cover 5 is installed on the motor 1 with screws. Finally, connector potting compound is applied to the plug end 52 and cured. The vent valve 51 is installed, completing the assembly of the electronic control unit. The cured potting compound layer 53 inside the plug end 52 is shown in the reference diagram. Figure 2 As shown.

[0080] In some implementations, the assembly process of the electronic control unit can also be referred to Figure 9 as well as Figure 7 First, install the busbar on one side of the second printed circuit board 22, then install the first printed circuit board 21 on the top of the motor 1, and then fold the second printed circuit board 22.

[0081] refer to Figure 9 As shown, the second printed circuit board 22 is first matched with the first connector 41 at the bottom of the bus body 31 to complete the connection of the signal pin 322. (Reference) Figure 7 As shown, the first printed circuit board 21 is assembled onto the top of the motor 1, which is coated with thermal paste, and the motor pins 13 are soldered to the first printed circuit board 21. The second printed circuit board 22 and the bus are folded over, and the bus is supported on the first support post 11 and / or the second support post 12 and connected to fix the bus body 31 to the top of the motor 1. The pin 33 is resistance soldered to the adapter 211, then sealant is applied to the glue groove on the top of the motor 1 housing, and the sealing cover 5 is installed on the motor 1 with screws. Finally, connector potting compound is applied to the plug end 52 and cured, and the vent valve 51 is installed to complete the assembly of the electronic control unit.

[0082] As can be seen from the above embodiments, the electronic control unit in the exemplary embodiments provided in this disclosure has the advantages of fewer assembly steps and higher component integration, which is conducive to improving the production line cycle time.

[0083] According to another aspect of this disclosure, a vehicle is also provided, including the electronic control unit of any of the foregoing embodiments. Specifically, the electronic control unit of the foregoing embodiments can be a redundant motor controller of the vehicle's electric power steering system, or a motor controller within other systems. The vehicle of this disclosure can reduce the cost of mold making for electronic control unit parts and the complexity of assembly, thus facilitating faster production cycles, cost savings, and reduced failure rates.

[0084] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. An electronic control unit, characterized in that, It includes a motor (1), a first printed circuit board (21), a second printed circuit board (22), and a bus (3); The motor (1), the first printed circuit board (21), the second printed circuit board (22), and the bus (3) are arranged in sequence; the first printed circuit board (21) is connected to the motor (1); the second printed circuit board (22) is connected to the first printed circuit board (21); the bus (3) includes a bus body (31) and connector pins (32); The connector pin (32) is embedded in the bus body (31) and extends out from the side of the bus body (31) away from the second printed circuit board (22).

2. The electronic control unit according to claim 1, characterized in that, The electronic control unit includes a pin (33) that extends from the side of the bus body (31) near the second printed circuit board (22) and is electrically connected to the first printed circuit board (21).

3. The electronic control unit according to claim 2, characterized in that, A reactor element (34) is installed on the bus body (31), and the reactor element (34) is electrically connected to the connector pin (32) and the pin lead (33).

4. The electronic control unit according to claim 3, characterized in that, The bus body (31) is provided with a first mounting part (311), and the reactor element (34) is mounted on the bus (3) through the first mounting part (311).

5. The electronic control unit according to claim 1, characterized in that, The connector pins (32) include a power pin (321) and a signal pin (322). Both the power pin (321) and the signal pin (322) are embedded in the bus body (31) and extend out of the side of the bus body (31) away from the second printed circuit board (22).

6. The electronic control unit according to claim 5, characterized in that, The two ends of the signal pin (322) extend out from both sides of the bus body (31); the second printed circuit board (22) is provided with a first mounting hole, and the end of the signal pin (322) near the second printed circuit board (22) extends into the first mounting hole and is electrically connected to the second printed circuit board (22).

7. The electronic control unit according to claim 6, characterized in that, The end of the signal pin (322) near the second printed circuit board (22) forms a compressible connector; the connector passes through the first mounting hole and is compressed by the hole wall of the first mounting hole.

8. The electronic control unit according to claim 1, characterized in that, The bus body (31) has a first connector (41) on the side near the second printed circuit board (22). The first connector (41) is integrally formed with the bus body (31), and the end of the first connector (41) is inserted into the second printed circuit board (22).

9. The electronic control unit according to claim 2, characterized in that, The first printed circuit board (21) and the second printed circuit board (22) are connected by a connecting part (23). The motor (1), the first printed circuit board (21), the second printed circuit board (22) and the busbar (3) are arranged sequentially along the axial direction of the motor (1).

10. The electronic control unit according to claim 9, characterized in that, The connecting part (23) is flexible and bendable so that the first printed circuit board (21) can be flipped relative to the second printed circuit board (22); the first printed circuit board (21), the second printed circuit board (22) and the bus body (31) are arranged parallel to each other perpendicular to the axis of the motor (1).

11. The electronic control unit according to claim 10, characterized in that, The bus body (31) has a countersunk head (313) on the side near the second printed circuit board (22), and the countersunk head (313) has a first connecting hole; the motor (1) has a first support column (11) on the side near the first printed circuit board (21), and the countersunk head (313) abuts against the first support column (11); the first support column (11) has a second connecting hole corresponding to the first connecting hole.

12. The electronic control unit according to claim 11, characterized in that, The bus body (31) is provided with a third connection hole; the outer casing of the motor (1) is provided with a second support column (12) on the side near the first printed circuit board (21), and the second support column (12) abuts against the side of the bus body (31) near the second printed circuit board (22); the second support column (12) is provided with a fourth connection hole corresponding to the third connection hole.

13. The electronic control unit according to claim 12, characterized in that, The first support column (11) is arranged in pairs on both sides of the connecting part (23).

14. The electronic control unit according to claim 1, characterized in that, The electronic control unit includes a second connector (42) that passes through the bus body (31), the second printed circuit board (22), and the first printed circuit board (21), and mounts the bus body (31), the second printed circuit board (22), and the first printed circuit board (21) onto the motor (1).

15. The electronic control unit according to claim 10, characterized in that, The electronic control unit includes a second connector (42), which includes a first connector and a second connector, which are integrally formed. The first connector passes through the housing of the first printed circuit board (21) and the motor (1) to connect the first printed circuit board (21) and the motor (1). The second connector is supported between the first printed circuit board (21) and the second printed circuit board (22). The bus body (31) has a countersunk head (313) on the side near the second printed circuit board (22), and the countersunk head (313) has a fifth connection hole; the second printed circuit board (22) has a sixth connection hole corresponding to the fifth connection hole, and the second connection part has a seventh connection hole corresponding to the sixth connection hole.

16. The electronic control unit according to claim 15, characterized in that, The second connector (42) is provided in pairs on both sides of the connector (23).

17. The electronic control unit according to claim 15, characterized in that, The first printed circuit board (21) has an adapter (211) on the side near the second printed circuit board (22), and the pins (33) are connected to the adapter (211); the bus body (31) has at least two sets of pins (33) on the side near the second printed circuit board (22), and at least one second connector (42) is located between the two sets of pins (33).

18. The electronic control unit according to claim 17, characterized in that, The bus body (31) is provided with a pin base (312); the connector pin (32) is embedded in the bus body (31) through the pin base (312), and the connector pin (32) extends out of the pin base (312).

19. The electronic control unit according to claim 18, characterized in that, The pin base (312) is located on the side of the bus body (31) away from the second printed circuit board (22); the connector pin (32) extends out from the side of the pin base (312) away from the second printed circuit board (22).

20. The electronic control unit according to claim 2, characterized in that, The second printed circuit board (22) has a hollowed-out clearance area. The first printed circuit board (21) has an adapter (211) on the side near the second printed circuit board (22). The pin (33) passes through the clearance area and is connected to the adapter (211). The orthographic projection of the adapter (211) on the second printed circuit board (22) is in the clearance area.

21. A vehicle, characterized in that, Includes the electronic control unit as described in any one of claims 1 to 20.

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