Motor control device

Abstract

Disclosed is a motor control device. The motor control device of one embodiment of the present application includes: a first electronic control unit including a first substrate having a first length, which performs control of a motor; a connector coupled to one side end portion of the length direction of the first substrate to transmit a power source and a signal to the first electronic control unit; a second electronic control unit including a second substrate having a second length, which performs control of the motor, wherein one surface of the second substrate faces one surface of the first substrate, and the second length is shorter than the first length; and a connection element that circuit-connects the first electronic control unit and the second electronic control unit to transmit the power source and the signal to the second electronic control unit.

Description

Technical Field

[0001] This invention relates to a motor control device, and more specifically, to a motor control device configured on one side of a motor to control the drive of the motor. Background Technology

[0002] In vehicles, the electronic control unit (ECU) that controls the rotational speed or torque of the motor is located separately from the vehicle's main electronic control unit, such as in the Electric Power Steering (EPS) system. Recently, a packaging technology that integrates the motor and ECU into a single unit has been adopted.

[0003] Furthermore, with the increasing prevalence of electronic and electrical systems in vehicles and the strengthening of fail / safety related safety regulations (ISO 26262), redundancy design is being used as a solution. To apply redundancy in motor control, additional electronic control units are required, meaning that two electronic control units need to be configured within the package.

[0004] As described above, ensuring space efficiency and reducing package size in the packaging of motors and electronic control units are becoming important technical challenges.

[0005] On the other hand, with two electronic control units (ECUs) for controlling the motor, power and control signals need to be transmitted to each ECU separately. However, existing vehicle wiring harnesses are typically configured to connect to only one ECU at a time.

[0006] Accordingly, there is also a demand for technology that can transmit power and control signals to two electronic control units simultaneously without excessive changes to the existing vehicle wiring harness.

[0007] (Existing technical literature)

[0008] (Patent Documents)

[0009] Authorized patent 10-0737135, "Electronic control unit for motor drive of a vehicle", published on July 2, 2007. Summary of the Invention

[0010] (The problem to be solved)

[0011] The present invention is intended to solve the problems of the prior art. The purpose of the present invention is to provide a motor control device that can transmit power and control signals to two electronic control units through a single connector.

[0012] Another object of the present invention is to provide a motor control device that improves space efficiency and minimizes the size of the package.

[0013] (Solutions)

[0014] According to one aspect of the present invention, a motor control device is provided, comprising: a first electronic control unit including a first substrate having a first length, for controlling a motor; a connector coupled to one end of the first substrate along its length direction for transmitting power and signals to the first electronic control unit; a second electronic control unit including a second substrate having a second length, for controlling the motor, wherein one side of the second substrate faces one side of the first substrate, and the second length is shorter than the first length; and a connecting element circuitically connecting the first electronic control unit and the second electronic control unit for transmitting the power and signals to the second electronic control unit.

[0015] At this time, the second length can be formed by the length of one side of the second substrate, which is not interfered with by the connector, being configured to overlap with one side of the first substrate in the length direction.

[0016] In addition, the connecting element may be composed of a busbar, one end of which is connected to the first substrate and the other end of which is connected to the second substrate.

[0017] Additionally, the first electronic control unit may be configured on the opposite side of the output shaft of the motor along a shaft extending in the length direction of the motor.

[0018] Additionally, a heat dissipation component may be included, which is arranged along an axis extending in the length direction of the motor to dissipate heat generated by the first electronic control unit and the second electronic control unit.

[0019] Additionally, the heat dissipation component may include a first heat dissipation component, which is formed in the shape of a plate and disposed between the first substrate and the second substrate.

[0020] In addition, the first electronic control unit and the second electronic control unit respectively include a first power supply circuit and a second power supply circuit disposed on the first substrate and the second substrate; the first heat dissipation component may include a first protrusion and a second protrusion formed therefrom, so as to contact the first power supply circuit and the second power supply circuit on one side and the other side that are in contact with the first substrate and the second substrate, respectively.

[0021] In addition, the first protrusion and the second protrusion can be formed such that at least a portion of them are not overlapping when viewed in the vertical direction.

[0022] In addition, the first heat dissipation component may include a recessed portion formed from one end to the other to prevent interference with the connecting element.

[0023] In addition, the heat dissipation component may also include a second heat dissipation component, which is in contact with the opposite end of the output shaft of the motor and connected to the first heat dissipation component.

[0024] In addition, the second heat dissipation component can be formed in a ring shape.

[0025] Additionally, a motor position sensing unit may be included, which is in contact with the opposite end of the output shaft of the motor to provide motor position sensing information to the first electronic control unit and the second electronic control unit.

[0026] Additionally, the motor position sensing unit may include: a connecting substrate, which contacts the opposite end of the output shaft of the motor; a first terminal, disposed on the connecting substrate for connection to the first electronic control unit; a second terminal, disposed on the connecting substrate for connection to the second electronic control unit; and a motor position sensor, which is coupled to the connecting substrate.

[0027] In addition, the first terminal and the second terminal may each have an ID that is identified in hard disk mode.

[0028] (The effect of the invention)

[0029] In one embodiment of the present invention, since two electronic control units are connected by a connecting element, power and control signals can be transmitted to both electronic control units simultaneously through a single connector.

[0030] In one embodiment of the present invention, the substrates of the two electronic control units have different lengths, thereby allowing the two electronic control units to be configured without interference from connectors, thus ensuring space efficiency and minimizing the size of the package. Attached Figure Description

[0031] Figure 1 This is a perspective view of a motor package including a motor control device according to an embodiment of the present invention.

[0032] Figure 2 This is a perspective view of a motor package containing a motor control device according to an embodiment of the present invention, with the cover of the motor control device removed.

[0033] Figure 3 This is a side view of a motor package containing a motor control device according to an embodiment of the present invention, with the cover of the motor control device removed.

[0034] Figure 4This is an exploded perspective view of a motor package of a motor control device including an embodiment of the present invention.

[0035] Figure 5 This is a plan view of the first electronic control unit and connector of a motor control device according to an embodiment of the present invention.

[0036] Figure 6 This is a plan view of the second electronic control unit of a motor control device according to an embodiment of the present invention.

[0037] Figure 7 This is a planar perspective view of the heat dissipation component of a motor control device according to an embodiment of the present invention.

[0038] Figure 8 This is a bottom perspective view of the heat dissipation component of a motor control device according to an embodiment of the present invention.

[0039] Figure 9 This is a diagram showing one side of the motor position sensing unit of a motor control device according to an embodiment of the present invention. Detailed Implementation

[0040] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings to enable those skilled in the art to readily implement the invention. The present invention can be implemented in various different forms and is not limited to the embodiments described herein. For clarity, parts unrelated to the description are omitted in the drawings, and the same or similar reference numerals are used throughout the specification.

[0041] In this specification, the terms "including" or "having" should be understood to specify the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, without excluding the possibility of the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0042] Figure 1 This is a perspective view of a motor package including a motor control device according to an embodiment of the present invention.

[0043] In one embodiment of the present invention, the motor control device 3 is a device for controlling the motor 1. More specifically, the motor control device in one embodiment of the present invention can control one or more of the rotational speed and torque of the motor 1. In this case, the motor 1 can be used in a vehicle's electric power steering (EPS) system. That is, the motor 1 can generate a steering assist force corresponding to the steering angle and torque detected based on the driver's operation of the steering wheel.

[0044] Reference Figure 1In one embodiment of the present invention, the motor control device 3 can be configured on the opposite side of the output shaft 11 of the motor 1 along the shaft A extending in the length direction of the motor 1. That is, in one embodiment of the present invention, the motor control device 3 can be configured on the opposite side of the output shaft 11 in both sides of the motor housing 12 to connect with the motor 1.

[0045] Figure 2 and Figure 3 These are a perspective view and a side view of a motor package containing a motor control device according to an embodiment of the present invention, with the cover of the motor control device removed. Additionally, Figure 4 This is an exploded perspective view of a motor package of a motor control device including an embodiment of the present invention.

[0046] In one embodiment of the present invention, the motor control device 3 transmits power and signals to a first electronic control unit 31 and a second electronic control unit 33 via a connector 32. The first electronic control unit 31 and the second electronic control unit 33 jointly control the motor 1 based on the received power and signals.

[0047] In this case, when the motor 1 is constructed with two windings, it is possible to consider that the first electronic control unit 31 and the second electronic control unit 33 are respectively connected to one winding and are responsible for half of the output of the motor 1.

[0048] Reference Figures 2 to 4 According to an embodiment of the present invention, the motor control device 3 includes: a first electronic control unit 31, a connector 32, a second electronic control unit 33, a connecting element 34, a heat dissipation component 35, a motor position sensing unit 36, and a cover 37.

[0049] The first electronic control unit 31 controls the motor 1. For example, the first electronic control unit 31 can control the motor 1 by means of power supplied from the vehicle's power source (battery) and signals transmitted from the vehicle's main electronic control unit.

[0050] As described above, when the motor 1 is constructed with two windings, the first electronic control unit 31 is connected to one of the windings of the motor 1 and can control half of the output of the motor 1.

[0051] The first electronic control unit 31 can be configured on the opposite side of the output shaft 11 of the motor 1 along shaft A, which extends in the length direction of the motor. Based on the first electronic control unit 31, the remaining structures of the motor control device 3 according to an embodiment of the present invention can be configured. Accordingly, the remaining structures can also be configured on the opposite side of the output shaft 11 of the motor 1 along shaft A, which extends in the length direction of the motor.

[0052] Reference Figure 5In one embodiment of the present invention, the first electronic control unit 31 may include: a first substrate 311, a first power supply circuit 312, a first control circuit 313, a first connecting pin 314, and a first connecting hole 315.

[0053] The first substrate 311 has a first length L1. The first substrate 311 may be constructed of a PCB (Printed Circuit Board). Various circuit elements for controlling the motor 1 are disposed on the first substrate 311. In addition, a connector 32 is attached to one end of the first substrate 311 along its length direction. Here, the length direction is defined as the direction along the axis A extending along the length direction of the motor.

[0054] The first power supply circuit 312 is composed of one or more electrical components and is disposed on the first substrate 311. The first power supply circuit 312 converts the power supplied from the outside through the connector 32 into a power supply suitable for driving the motor 1.

[0055] The first power supply circuit 312 includes a first power supply terminal 312a connected to the first busbar 13 of the motor 1. In this case, the first busbar 13 may be a terminal connected to the first winding in the dual windings of the motor 1.

[0056] The first power supply circuit 312 is the main heat-generating component in the first electronic control unit 31. Accordingly, as described below, the first power supply circuit 312 is primarily dissipated through the heat sink 35.

[0057] The first control circuit 313 consists of one or more control elements and is disposed on the first substrate 311. The first control circuit 313 controls the first power supply circuit 312 and the like based on signals provided from the outside through the connector 32, and ultimately controls the motor 1.

[0058] The first control circuit 313 generates less heat than the first power supply circuit 312. Therefore, as described below, the first control circuit 313 may not need to be in direct contact with the heat sink 35.

[0059] The first connecting pin 314 connects the motor position sensing unit 36 ​​and the first electronic control unit 31. Specifically, motor position sensing information can be transmitted from the motor position sensing unit 36 ​​to the first substrate 311 through the first connecting pin 314. The transmitted motor position sensing information can be transmitted to the external main electronic control unit through the connector 32.

[0060] A first connection hole 315 is formed in the first substrate 311 to insert one end of the connecting element 34. Since one end of the connecting element 34 is connected in the first connection hole 315, the first substrate 311 and the second substrate 331 can be electrically connected.

[0061] Connector 32 transmits power and signals to the first electronic control unit 31. Additionally, motor position sensing information can also be transmitted externally via connector 32. In other words, connector 32 connects the external main electronic control unit and power supply to the first electronic control unit 31.

[0062] In one embodiment of the present invention, the connector 32 is coupled to one end of the first substrate 311 along its length. More specifically, the connector 32 can be coupled to one end of the first substrate 311 along its length when the other end of the first substrate 311 is adjacent to the end of the motor housing 12 opposite to the output shaft 11.

[0063] In one embodiment of the present invention, connector 32 includes a first connector 321 and a second connector 322. The first connector 321 transmits external power and signals to the first electronic control unit 31. The second connector 322 transmits motor position sensing information from the motor position sensing unit 36 ​​to the outside.

[0064] The second electronic control unit 33 controls the motor 1. For example, similar to the first electronic control unit 31, the second electronic control unit 33 controls the motor 1 using power supplied from the vehicle's power source (battery) and signals transmitted from the vehicle's main electronic control unit.

[0065] As described above, when the motor 1 is constructed with two windings, the second electronic control unit 33 is connected to another winding in the motor 1 that is not connected to the first electronic control unit 31, and can control half of the output of the motor 1.

[0066] Reference Figure 6 In one embodiment of the present invention, the second electronic control unit 33 may include: a second substrate 331, a second power supply circuit 332, a second control circuit 333, a second connecting pin 334, and a second connecting hole 335.

[0067] The second substrate 331 has a second length L2. The second length L2 is shorter than the first length L1. (Refer to...) Figure 3 , Figure 5 and Figure 6 In one embodiment of the present invention, the second length L2 is formed by the length of one side of the second substrate 331 and one side of the first substrate 311 that can be arranged in a length direction overlapping without interference from the connector 32.

[0068] Accordingly, with the connector 32 connected to one end of the first substrate 311 along its length, the second substrate 331 can be arranged facing the first substrate 311 without interference from the connector 32. More specifically, with the connector 32 connected to one end of the first substrate 311 along its length, the second substrate 331 can be arranged without interference from the connector 32, while the other end of the second substrate 331 along its length can be aligned side-by-side with the other end of the first substrate 311 along its length. That is, the first substrate 311 and the second substrate 331 can be arranged facing each other along axis A extending in the length direction of the motor on opposite sides of the output shaft 11 of the motor 1. With this structure, space efficiency can be maximized.

[0069] Similar to the first substrate 311, the second substrate 331 can be constructed from a PCB. Furthermore, various circuit elements for controlling the motor 1 are disposed on the second substrate 331.

[0070] The second power supply circuit 332 consists of one or more power components and is disposed on the second substrate 331. The second power supply circuit 332 receives power supplied from the first electronic control unit 31 via connector 32 through connection element 34 and converts it into power suitable for driving motor 1.

[0071] The second power supply circuit 332 includes a first power supply terminal 332a connected to the second busbar 15 of the motor 1. In this case, the second busbar 14 may be a power supply terminal connected to the second winding in the dual winding of the motor 1.

[0072] The second power supply circuit 332 is the main heat-generating component in the second electronic control unit 33. Accordingly, as described below, the second power supply circuit 332 is primarily dissipated through the heat sink 35.

[0073] The second control circuit 333 consists of one or more control elements and is disposed on the second substrate 331. The second control circuit 333 receives signals transmitted from the outside via the connector 32 from the first electronic control unit 31 through the connection element 34 to control the second power supply circuit 332, etc., and ultimately executes the control of the motor 1.

[0074] The second control circuit 333 generates less heat than the second power supply circuit 332. Therefore, as described below, the second control circuit 333 may not need to be in direct contact with the heat sink 35.

[0075] The second connecting pin 334 connects the motor position sensing unit 36 ​​and the second electronic control unit 33. Specifically, motor position sensing information can be transmitted from the motor position sensing unit 36 ​​to the second substrate 331 via the second connecting pin 334. The transmitted motor position sensing information can be transmitted to the external main electronic control unit via the connecting element 34 and the connector 32.

[0076] A second connection hole 335 is formed in the second substrate 331 to insert the other end of the connecting element 34. Since the other end of the connecting element 34 is connected in the second connection hole 335, the second substrate 331 and the first substrate 311 can be electrically connected.

[0077] The connecting element 34 is electrically connected to the first electronic control unit 31 and the second electronic control unit 33. The connecting element 34 transmits power and signals from the first electronic control unit 31 to the second electronic control unit 33 via the connector 32.

[0078] In one embodiment of the present invention, the connecting element 34 is formed by a busbar, one end of which is connected to the first substrate 311 and the other end of which is connected to the second substrate 331. More specifically, one end of the connecting element 34 is inserted into the first connecting hole 315, and the other end can be inserted into and connected to the second connecting hole 335. Accordingly, the first substrate 311 and the second substrate 331 are connected by a circuit.

[0079] In one embodiment of the invention, the second electronic control unit 33 is not connected to a connector. Therefore, the second electronic control unit 33 cannot be directly connected to an external main electronic control unit and power supply. In this situation, since the connecting element 34 circuitically connects the first electronic control unit 31 and the second electronic control unit 33, which are connected to the connector 32, the second electronic control unit 33 is indirectly connected to the external main electronic control unit and power supply. Accordingly, two electronic control units can be connected simultaneously using the existing wiring harness structure of a vehicle that can only connect one electronic control unit.

[0080] The heat dissipation component 35 is arranged along shaft A, which extends along the length of motor 1, to dissipate heat generated by the first electronic control unit 31 and the second electronic control unit 33. For example... Figures 2 to 4 As shown, in one embodiment of the present invention, the heat dissipation component 35 includes a first heat dissipation component 351 and a second heat dissipation component 352.

[0081] The first heat dissipation component 351 is a plate-shaped component disposed between the first substrate 311 and the second substrate 331. The first heat dissipation component 351 is disposed between the first substrate 311 and the second substrate 331 to dissipate the heat generated by the first electronic control unit 31 and the second electronic control unit 33.

[0082] Reference Figure 7 and Figure 8In one embodiment of the present invention, the first heat dissipation component 351 includes a first protrusion 3511 and a second protrusion 3512 respectively protruding from one side and the other side that contact the first substrate 311 and the second substrate 331, for contacting the first power supply circuit 312 and the second power supply circuit 332. The first protrusion 3511 and the second protrusion 3512 respectively have positions and areas corresponding to the first power supply circuit 312 and the second power supply circuit 332, and have shapes that can contact the first substrate 311 and the second substrate 331.

[0083] As described above, the first electronic control unit 31 and the second electronic control unit 33 respectively include a first power supply circuit 312 and a second power supply circuit 332 disposed on the first substrate 311 and the second substrate 331, which are the main heat sources of the first electronic control unit 31 and the second electronic control unit 33. The first protrusion 3511 and the second protrusion 3512 are in direct contact with the first power supply circuit 312 and the second power supply circuit 332, which generate relatively more heat, so as to achieve heat dissipation smoothly.

[0084] In one embodiment of the invention, the first protrusion 3511 and the second protrusion 3512 are formed such that at least a portion of them do not overlap when viewed in a vertical direction. This structure disperses the heat dissipation area, thereby improving heat dissipation efficiency.

[0085] A first heat dissipation component 351 is disposed between a first substrate 311 and a second substrate 331, and a connecting element 34 is disposed between the first substrate 311 and the second substrate 331 to connect them. Accordingly, interference may occur between the first heat dissipation component 351 and the connecting element 34. To prevent this problem, the first heat dissipation component 351 includes a recessed portion 3513 formed from one end to the other. The recessed portion 3513, recessed from one side to the other, prevents the connecting element 34 from interfering with the first heat dissipation component 351.

[0086] On the other hand, in one embodiment of the present invention, a first substrate 311 and a second substrate 331 are fixed to one side and the other side of the first heat dissipation component 351, respectively. Specifically, one or more screw holes 3514 are formed on one side and the other side of the first heat dissipation component 351, and the first substrate 311 and the second substrate 331 can be fixed to the first heat dissipation component 351 by screws S that pass through themselves and are fastened to the screw holes 3514.

[0087] The second heat dissipation component 352 contacts the opposite end of the output shaft 11 of the motor 1 and is a heat dissipation component connected to the first heat dissipation component 351. In one embodiment of the present invention, the second heat dissipation component 352 is formed in a ring shape. Furthermore, the first heat dissipation component 351 is connected to the inner circumferential surface of the second heat dissipation component 352. Accordingly, the heat transferred through the first heat dissipation component 351 can be dissipated to the outside through the second heat dissipation component 352.

[0088] In one embodiment of the invention, the second heat dissipation component 352 is coupled to the ends of the output shaft 11 on opposite sides of the motor housing 12. More specifically, the motor housing 12, which forms a cylinder shape, has one or more screw holes 121 at its end, and the second heat dissipation component 352 has screw holes 3521 at positions corresponding to the screw holes 121. Since screws are inserted into and fastened to the screw holes 3521 of the second heat dissipation component 352 and the screw holes 121 of the motor housing 12, the second heat dissipation component 352 can be coupled to the motor 1.

[0089] On the other hand, a sealing component may be configured between the second heat dissipation component 352 and the motor housing 12 to ensure airtightness. For example, the sealing component may be an O-ring.

[0090] In one embodiment of the present invention, the first heat dissipation component 351 and the second heat dissipation component 352 may be integrally formed. Alternatively, they may be made of an aluminum alloy material that is advantageous in terms of mechanical properties and thermal conductivity.

[0091] The motor position sensing unit 36 ​​is in contact with the opposite end of the output shaft 11 of the motor 1, and provides motor position sensing information to the first electronic control unit 31 and the second electronic control unit 33.

[0092] In one embodiment of the present invention, the motor position sensing unit 36 ​​senses the motor position via a sensing magnet 15 disposed at one end of the rotating shaft of the motor 1. The motor position sensing information can be transmitted to an external main electronic control unit via a first electronic control unit 31 or a second electronic control unit 33 and a second connector 322.

[0093] Reference Figure 9 The motor position sensing unit 36 ​​includes: a connecting base plate 361, a first terminal 362, a second terminal 363, and a motor position sensor 364.

[0094] The connecting substrate 361 contacts the opposite end of the output shaft 11 of the motor 1. Similar to the first substrate 311 and the second substrate 331, the connecting substrate 361 can be made of a PCB.

[0095] First terminal 362 and second terminal 363 are disposed on connecting substrate 361 for connection to first electronic control unit 31 and second electronic control unit 33, respectively. In one embodiment of the present invention, first terminal 362 and second terminal 363 are formed into insertion holes on connecting substrate 361. Since first connecting pin 314 and second connecting pin 334 are respectively inserted into first terminal 362 and second terminal 363, first electronic control unit 31 and second electronic control unit 33 are connected to motor position sensing unit 36.

[0096] On the other hand, in one embodiment of the invention, the first terminal 362 and the second terminal 363 may each have an ID that is identified in hardware mode. For example, one of the first terminal 362 and the second terminal 363 may be connected to a pull-up resistor, while the other may be connected to a pull-down resistor. Such a difference may be reflected on the connection substrate 361, and thus the difference may be identified by appearance.

[0097] If the first terminal 362 and the second terminal 363 can be distinguished in hardware mode, then the first electronic control unit 31 and the second electronic control unit 33 can be identified by whether one of them is connected. This has the advantage of preventing defects during mass production compared to identifying the first electronic control unit 31 and the second electronic control unit 33 through software.

[0098] The motor position sensor 364 is attached to the connecting base plate 361 to sense the position information of the motor. In one embodiment of the present invention, the motor position sensor 364 may be disposed on the same shaft as the sensing magnet 15 disposed at one end of the rotating shaft of the motor 1.

[0099] The cover 37 protects the first electronic control unit 31, connector 32, second electronic control unit 33, connecting element 34, heat dissipation component 35, and motor position sensing unit 36 ​​from external foreign objects. In one embodiment of the invention, the cover 37 is formed in the shape of a cylinder connected to the motor housing 12, and one end in the length direction has a shape through which the connector 32 can pass.

[0100] The above describes one embodiment of the present invention. However, the concept of the present invention is not limited to the embodiment presented in this specification. Those skilled in the art who understand the concept of the present invention can easily propose other embodiments by adding, changing, deleting, or adding components within the same conceptual scope, and these also fall within the conceptual scope of the present invention.

Claims

1. A motor control device, comprising: The first electronic control unit includes a first base plate having a first length along the axial direction of the motor, and performs motor control. A connector is attached to one end of the first substrate along its length to transmit power and signals to the first electronic control unit. The second electronic control unit includes a second substrate having a second length along the axial direction of the motor, and performs control of the motor, wherein one side of the second substrate faces one side of the first substrate, and the second length is shorter than the first length. and The connecting element is a circuit that connects the first electronic control unit and the second electronic control unit, transmitting the power and signals to the second electronic control unit. A portion of the connector connected to the first substrate is formed on the first substrate facing one end of the second substrate along its length direction and is disposed in a space formed by the difference between the first length of the first substrate and the second length of the second substrate, which is not interfered with by the one end of the second substrate along its length direction.

2. The motor control device according to claim 1, characterized in that, The second length is formed by the length of one side of the second substrate, which is configured to overlap with one side of the first substrate in the length direction without interference from the connector.

3. The motor control device according to claim 1, characterized in that, The connecting element is composed of a busbar, one end of which is connected to the first substrate and the other end of which is connected to the second substrate.

4. The motor control device according to claim 1, characterized in that, The first electronic control unit is configured on the opposite side of the output shaft of the motor along a shaft extending in the length direction of the motor.

5. The motor control device according to claim 4, characterized in that, Also includes: A heat dissipation component is configured along an axis extending along the length of the motor to dissipate heat generated by the first electronic control unit and the second electronic control unit.

6. The motor control device according to claim 5, characterized in that, The heat dissipation component includes a first heat dissipation component, which is formed in the shape of a plate and disposed between the first substrate and the second substrate.

7. The motor control device according to claim 6, characterized in that, The first electronic control unit and the second electronic control unit respectively include a first power supply circuit and a second power supply circuit disposed on the first substrate and the second substrate. The first heat dissipation component includes a first protrusion and a second protrusion, which are formed to contact the first power circuit and the second power circuit on one side and the other side that are in contact with the first substrate and the second substrate, respectively.

8. The motor control device according to claim 7, characterized in that, The first protrusion and the second protrusion are formed such that at least a portion of them are non-overlapping when viewed in a vertical direction.

9. The motor control device according to claim 6, characterized in that, The first heat dissipation component includes a recessed portion formed from one end to the other to prevent interference with the connecting element.

10. The motor control device according to claim 6, characterized in that, The heat dissipation component further includes a second heat dissipation component, which contacts the opposite end of the output shaft of the motor and is connected to the first heat dissipation component.

11. The motor control device according to claim 10, characterized in that, The second heat dissipation component is formed in a ring shape.

12. The motor control device according to claim 4, characterized in that, Also includes: The motor position sensing unit is in contact with the opposite end of the output shaft of the motor, and provides motor position sensing information to the first electronic control unit and the second electronic control unit.

13. The motor control device according to claim 12, characterized in that, The motor position sensing unit includes: A connecting base plate is in contact with the opposite end of the output shaft of the motor; A first terminal is disposed on the connection substrate for connection to the first electronic control unit; A second terminal is disposed on the connection substrate for connection to the second electronic control unit; and A motor position sensor is integrated into the connecting substrate.

14. The motor control device according to claim 13, characterized in that, The first terminal and the second terminal each have an ID that is identified in hard disk mode.

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