Drive device

Abstract

The present invention provides a driving device. The driving device can suppress the propagation of electromagnetic noise generated by a connecting line to the outside. The driving device (1) comprises: a driving unit (10) having a rotating motor (11) and a driving unit housing (13) accommodating the rotating motor (11); a control unit (20) having a control device (21) for controlling the rotating motor (11); and a connecting unit (30) having a connecting line (31) for electrically connecting the rotating motor (11) and the control device (21). The control unit (20) is arranged at a position opposite to the outer peripheral surface (131) of the driving unit housing (13), and a space portion (50) is formed between the outer peripheral surface (131) of the driving unit housing (13) and the control unit (20). The connecting unit (30) is arranged in a manner that the connecting line (31) passes through the space portion (50) to electrically connect the rotating motor (11) and the control device (21).

Description

Technical Field

[0001] The present invention relates to a driving device for driving a vehicle or the like. Background Art

[0002] In recent years, electric vehicles such as hybrid vehicles, battery-driven vehicles, and fuel cell vehicles have become increasingly popular, and these electric vehicles are equipped with a drive device having a rotating electric machine such as a motor and a generator and a control unit for controlling the rotating electric machine. For example, Patent Document 1 discloses a drive device having a transverse engine, a motor / generator, a belt-type continuously variable transmission, and a control unit having a motor controller and an inverter for controlling the motor / generator.

[0003] In the drive device of Patent Document 1, the control unit is arranged at a position opposite to the outer peripheral surface of the motor / generator and the belt-type continuously variable transmission, and the motor / generator and the inverter are connected by a three-phase AC wire harness (connecting wire). In addition, the connection position of the three-phase AC wire harness (connecting wire) and the rotating electric machine, and the connection position of the three-phase AC wire harness (connecting wire) and the control unit are both located on the right side of the control unit, and the three-phase AC wire harness (connecting wire) is arranged in a space surrounded by the internal combustion engine, a bellows as one of the auxiliary components of the internal combustion engine, the outer peripheral surface of the rotating electric machine, and the control unit.

[0004] [Prior art literature]

[0005] [Patent Literature]

[0006] Patent Document 1: Japanese Patent Application Publication No. 2013-147046 Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, since high voltage power for driving the motor / generator flows through the three-phase AC wiring harness (connection wire) of Patent Document 1, electromagnetic noise is generated from the three-phase AC wiring harness (connection wire). Therefore, the driving device of Patent Document 1 has a problem that the electromagnetic noise generated from the three-phase AC wiring harness (connection wire) is easily propagated to the outside such as the interior of the vehicle.

[0009] The present invention provides a driving device capable of suppressing electromagnetic noise generated from a connection line from propagating to the outside.

[0010] Means for solving problems

[0011] The present invention is a driving device having:

[0012] A drive unit having a rotary motor and a drive unit housing for accommodating the rotary motor;

[0013] a control unit having a control device for controlling the rotating electrical machine and a control unit housing for accommodating the control device; and

[0014] a connection unit having a connection line for electrically connecting the rotating electric machine and the control device,

[0015] Wherein, the connecting line has:

[0016] an extension portion extending in a prescribed direction;

[0017] a rotating electric machine side connecting terminal portion, which is formed at one end portion of the extending portion and is electrically connected to the rotating electric machine; and

[0018] a control device side connecting terminal portion, which is formed at the other end of the extending portion and is electrically connected to the control device,

[0019] The drive unit housing has an outer peripheral surface extending in the circumferential direction of the rotation axis of the rotating electrical machine.

[0020] The control unit is arranged at a position opposite to the outer peripheral surface of the driving unit housing.

[0021] A space is formed between the outer peripheral surface of the drive unit housing and the control unit.

[0022] The connection unit is provided so that the connection line passes through the space portion to electrically connect the rotating electric machine and the control device.

[0023] Effects of the Invention

[0024] According to the present invention, since the connection unit is provided in a manner that the connection line passes through the space portion surrounded by the drive unit housing and the control unit, the electromagnetic noise generated from the connection line is transmitted through the drive unit housing and the control unit and grounded. Thus, it is possible to suppress the electromagnetic noise generated from the connection line from propagating to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a plan view of the driving device according to one embodiment of the present invention as seen from above.

[0026] Figure 2 Yes means Figure 1 Figure 2. A diagram of the main parts of an AA cross section.

[0027] Figure 3 yes Figure 1 A three-dimensional view of a connection unit of a drive device.

[0028] Figure 4 It means that the connection unit is installed on Figure 1 A perspective view of a state of a driving unit of a driving device.

[0029] Figure 5 It means in Figure 1 A three-dimensional diagram showing a state in which a connection unit and a control unit are mounted on a drive unit of a drive device.

[0030] Figure 6 Observed from above Figure 5 A top view of the connection unit and the surrounding area of ​​the control unit.

[0031] Figure 7 Yes means Figure 6 Diagram of the main parts of the BB cross section.

[0032] Figure 8 Yes means Figure 6 A perspective view of the main parts of the BB cross section.

[0033] Description of Reference Numerals

[0034] 1 Drive unit

[0035] 10 Drivers

[0036] 11 Rotating electrical machines

[0037] 13 Drive unit housing

[0038] 131 Outer Surface

[0039] 20 Control unit

[0040] 21 Control device

[0041] 22 Control unit housing

[0042] 30 Connection unit

[0043] 31 Connection cable

[0044] 310 Extension

[0045] 310a Exposed part

[0046] 311 Rotating motor side connection terminal

[0047] 312 Control device side connection terminal

[0048] 321 Rotating motor side connection terminal housing

[0049] 322 Control device side connection terminal housing

[0050] 40 Internal combustion engine

[0051] 41 Cooling water bypass unit (internal combustion engine auxiliary component)

[0052] 50 Space Department

[0053] 60 Space

[0054] RC Rotation Axis DETAILED DESCRIPTION

[0055] Hereinafter, as an embodiment of the drive device of the present invention, a drive device mounted on a vehicle is described based on the accompanying drawings. It should be noted that the accompanying drawings should be viewed along the direction of the symbols. In addition, in this specification, etc., in order to make the description simple and clear, the front and rear, left and right, and up and down directions are recorded according to the direction observed from the driver of the vehicle, and in the accompanying drawings, the front of the vehicle is represented as Fr, the rear is represented as Rr, the left is represented as L, the right is represented as R, the top is represented as U, and the bottom is represented as D. In addition, in this specification, etc., the left and right directions are also referred to as vehicle width directions.

[0056] <Overall Structure of the Drive Device>

[0057] like Figure 1 as well as Figure 2 As shown, the drive device 1 of the present embodiment includes a drive unit 10 , a control unit 20 , a connection unit 30 , and an internal combustion engine 40 .

[0058] The control unit 20 is arranged above the drive unit 10. The connection unit 30 is arranged between the drive unit 10 and the control unit 20. The internal combustion engine 40 is arranged adjacent to the right side of the drive unit 10.

[0059] <Driver unit>

[0060] The drive unit 10 includes a rotating electrical machine 11 , a transmission 12 , and a drive unit housing 13 that accommodates the rotating electrical machine 11 and the transmission 12 .

[0061] The rotary electric machine 11 is arranged such that the rotation axis RC is in the vehicle width direction (left-right direction). The rotary electric machine 11 includes a rotary shaft 111 having the rotation axis RC as the axis center.

[0062] It should be noted that, in this specification, unless otherwise specified, the axial direction, radial direction, and circumferential direction refer to directions based on the rotation axis RC of the rotary electric machine 11. In the present embodiment, the axial direction coincides with the vehicle width direction (left-right direction).

[0063] like Figure 2 As shown, the rotating electric machine 11 and the transmission 12 are arranged adjacent to each other in the vehicle width direction such that the rotating electric machine 11 is arranged on the right side and the transmission 12 is arranged on the left side.

[0064] The transmission 12 includes an input shaft 121 connected to the rotating shaft 111 of the rotating electric machine 11 and receiving the rotating power of the rotating electric machine 11 from the rotating shaft 111. The input shaft 121 of the transmission 12 has a rotation axis RC of the rotating electric machine 11 and is coaxial with the rotating shaft 111 of the rotating electric machine 11.

[0065] The drive unit case 13 is divided into a rotating electrical machine housing portion 130a housing the rotating electrical machine 11 and a transmission housing portion 130b housing the transmission 12. The rotating electrical machine housing portion 130a is disposed on the right side and the transmission housing portion 130b is disposed on the left side adjacent to each other in the vehicle width direction.

[0066] When viewed from the axial direction, the drive unit housing 13 has: an outer peripheral surface 131, which surrounds the rotating motor 11 and the transmission 12 and extends in a cylindrical shape in the circumferential direction; a left side wall portion 132, which blocks the left end of the outer peripheral surface 131 and constitutes the left side of the drive unit housing 13; and a partition wall 133, which is arranged inside the cylindrical shape of the outer peripheral surface 131 and divides the rotating motor housing portion 130a and the transmission housing portion 130b. In this embodiment, the right end of the outer peripheral surface 131 is open and abuts against the left wall portion of the internal combustion engine 40 described later. In addition, the opening of the right end of the outer peripheral surface 131 is blocked by the left wall portion of the internal combustion engine 40 described later, and the right end of the rotating motor housing portion 130a is sealed by the left wall portion of the internal combustion engine 40.

[0067] The drive unit housing 13 is divided into a right housing 13R constituting a right region of the outer peripheral surface 131 of the drive unit housing 13 and a partition wall 133 , and a left housing 13L constituting a left region of the outer peripheral surface 131 of the drive unit housing 13 and a left side wall portion 132 .

[0068] <Control Unit>

[0069] like Figures 5 to 8 As shown, the control unit 20 includes: a control device 21 for controlling the rotary electric machine 11 of the drive unit 10 ; a control unit case 22 for accommodating the control device 21 ; and three connection wires 23 electrically connected to the control device 21 .

[0070] The control device 21 includes, for example, a step-up / step-down converter, an inverter for converting DC power and three-phase AC power, a reactor, a capacitor unit, and the like.

[0071] The control unit housing 22 extends in the front-to-back direction and the left-to-right direction and is formed of a conductive material such as metal. The control unit housing 22 has: a substantially flat upper wall portion 22U, which constitutes the upper surface of the control unit housing 22; a substantially flat bottom wall portion 22D, which is opposite to the upper wall portion 22U, extends in the front-to-back direction and the left-to-right direction, and constitutes the lower surface of the control unit housing 22; a left wall portion 22L, which extends from the left end edge of the upper wall portion 22U to the left end edge of the bottom wall portion 22D in the up-down direction and the front-to-back direction, and constitutes the left side surface of the control unit housing 22; and a right wall portion 22R, which extends from the upper wall portion 22U to the left end edge of the bottom wall portion 22D. U extends in the up-down direction and the front-to-back direction to the right end edge of the bottom wall portion 22D, and constitutes the right side surface of the control unit housing 22; the front wall portion 22F, which extends in the up-down direction and the left-to-right direction from the front end edge of the upper wall portion 22U to the front end edge of the bottom wall portion 22D, and constitutes the front surface of the control unit housing 22; and the rear wall portion 22B, which extends in the up-down direction and the left-to-right direction from the rear end edge of the upper wall portion 22U to the rear end edge of the bottom wall portion 22D, and constitutes the rear surface of the control unit housing 22.

[0072] The three connection wires 23 are all flat bus bars. The three connection wires 23 extend in parallel with each other and are inserted through the insertion hole 221 provided in the left wall portion 22L of the control unit housing 22. One end of the connection wire 23 is connected to the control device 21, and the other end of the connection wire 23 is exposed to the left outer side of the left wall portion 22L of the control unit housing 22. A connection terminal 231 connected to the connection unit 30 described later is formed at the other end of the connection wire 23. Each connection terminal 231 has a flat quadrilateral shape that is approximately orthogonal to the up-down direction, and is provided with an insertion hole that penetrates in the up-down direction.

[0073] A terminal protection wall 222 is provided on the left wall 22L of the control unit housing 22 so as to protrude from the left wall 22L of the control unit housing 22 to the left outer side and surround the upper, left, front and rear sides of the connection terminals 231 of the three connection wires 23. An opening 222a is formed on the upper surface of the terminal protection wall 222 above the connection terminals 231. The control unit 20 further includes a terminal cover member 24 that blocks the opening 222a on the upper surface of the terminal protection wall 222.

[0074] <Connection Unit>

[0075] like Figure 3 As shown, the connection unit 30 includes three connection wires 31 for electrically connecting the rotary electric machine 11 of the drive unit 10 and the control device 21 of the control unit 20 . The three connection wires 31 extend in parallel in the left-right direction.

[0076] Each connection line 31 has an extension portion 310 extending in the left-right direction, a rotating motor side connection terminal portion 311 formed at the right end of the extension portion 310 and electrically connected to the rotating motor 11 of the drive unit 10, and a control device side connection terminal portion 312 formed at the left end of the extension portion 310 and electrically connected to the control device 21 of the control unit 20. In the present embodiment, the extension portion 310 is a flat bus bar.

[0077] The rotating electric machine side connection terminal portion 311 extends rightward from the right end portion of the extension portion 310 and has a flat plate quadrilateral shape substantially perpendicular to the vertical direction. The rotating electric machine side connection terminal portion 311 is provided with an insertion hole penetrating in the vertical direction.

[0078] The control device side connection terminal portion 312 has: a bent portion 312a, which is bent upward from the left end of the connection line 31 and extends in the vertical direction; and a terminal portion 312b, which is bent to the left from the upper end of the bent portion 312a and has a flat quadrilateral shape that is substantially orthogonal to the vertical direction. The terminal portion 312b is provided with an insertion hole that penetrates in the vertical direction.

[0079] The connection unit 30 includes a rotating electrical machine side connection terminal case 321 that accommodates the rotating electrical machine side connection terminal portion 311 , and a control device side connection terminal case 322 that accommodates the control device side connection terminal portion 312 .

[0080] The rotating electric machine side connection terminal case 321 covers the rotating electric machine side connection terminal portion 311 and a portion of the right end side of the extending portion 310 .

[0081] The rotating electrical machine side connection terminal housing 321 includes: a lower housing 321a which covers the rotating electrical machine side connection terminal portion 311 from below and opens upward; and an upper cover 321b which blocks the upward opening of the lower housing 321a (see Figure 4 , Figure 7 , Figure 8 ). Three conductive bases 321c are fixed to the lower housing 321a. Each conductive base 321c is formed of a conductive material such as metal, has a substantially rectangular parallelepiped shape extending in the vertical direction, and has a flange shape at its upper end. An insertion hole penetrating in the vertical direction is provided on each conductive base 321c. A rotating motor side connection terminal portion 311 is placed on each conductive base 321c. The rotating motor side connection terminal portion 311 is placed on the conductive base 321c in such a manner that its insertion hole overlaps with the insertion hole of the conductive base 321c.

[0082] The control device side connection terminal case 322 covers the control device side connection terminal portion 312 and a portion of the left end side of the extension portion 310 .

[0083] The control device side connection terminal housing 322 includes: a lower housing 322a that covers the control device side connection terminal portion 312 from below and opens upward; and a fastening nut 322b that is fixed to the lower housing 322a. The terminal portion 312b of the control device side connection terminal portion 312 is placed on the fastening nut 322b. The terminal portion 312b of the control device side connection terminal portion 312 is placed on the fastening nut 322b in a manner that its insertion hole overlaps with the fastening nut 322b.

[0084] The extension portion 310 of the connection wire 31 has an exposed portion 310a exposed from the rotating electrical machine side connection terminal housing 321 and the control device side connection terminal housing 322. In this embodiment, the connection unit 30 further includes a cover member 33 (see Figure 4 , Figure 8 The cover member 33 is formed of an insulating material such as rubber. Therefore, the exposed portion 310 a is exposed from the rotating electrical machine side connection terminal case 321 and the control device side connection terminal case 322 , but is covered by the cover member 33 .

[0085] <Configuration of control unit and connection unit>

[0086] like Figure 4 as well as Figure 6 to Figure 8 As shown, the connection unit 30 is fixed to the outer peripheral surface 131 of the driving unit housing 13 of the driving unit 10. In this embodiment, the connection unit 30 is fixed to the upper portion of the outer peripheral surface 131 of the driving unit housing 13.

[0087] The connecting wire 31 of the connecting unit 30 extends in the left-right direction, the rotating motor side connecting terminal shell 321 is fixed to the right housing 13R at the upper part of the rotating motor accommodating portion 130a of the drive unit housing 13, and the control device side connecting terminal shell 322 is fixed to the left housing 13L at the upper part of the transmission accommodating portion 130b of the drive unit housing 13.

[0088] Furthermore, a fastening member 341 such as a bolt is inserted from above into the insertion hole of the rotating motor side connection terminal portion 311 and the insertion hole of the conductive base 321c, and is fastened to the connection terminal (not shown) of the rotating motor 11 exposed on the outer peripheral surface 131 of the drive unit housing 13, thereby fastening the rotating motor side connection terminal portion 311, the conductive base 321c, and the connection terminal of the rotating motor 11 together. Thus, the rotating motor side connection terminal portion 311 and the connection terminal of the rotating motor 11 are electrically connected via the conductive base 321c. Furthermore, after the fastening member 341 is fastened to the connection terminal of the rotating motor 11, the upper cover 321b is fixed to the lower housing 321a, thereby the upper part of the rotating motor side connection terminal portion 311 is covered by the upper cover 321b, and the rotating motor side connection terminal portion 311 is protected.

[0089] like Figures 5 to 8 As shown in FIG. 1 , the control unit 20 is arranged above the connection unit 30. Therefore, the control unit 20 is arranged at a position opposite to the outer peripheral surface 131 of the drive unit housing 13 across the connection unit 30. At this time, the control unit 20 is arranged above the connection unit 30 in such a manner that the insertion holes of the connection terminals 231 of the three connection wires 23 formed in the control unit 20 overlap with the insertion holes of the terminal portions 312b of the control device side connection terminal portions 312 formed in the connection unit 30.

[0090] The control unit housing 22 is fastened to the outer peripheral surface 131 of the drive unit housing 13 of the drive unit 10 by fastening components 25 such as bolts at three locations, namely, the approximately central portion of the front wall portion 22F in the left-right direction, the rear end portion of the left wall portion 22L, and a portion of the rear wall portion 22B slightly to the right of the approximately central portion in the left-right direction.

[0091] Furthermore, by inserting a fastening member 342 such as a bolt from above into the insertion hole of the connection terminal 231 of the connection wire 23 formed in the control unit 20 and the insertion hole of the terminal portion 312b of the control device side connection terminal portion 312 provided in the connection unit 30, and fastening it to the fastening nut 322b of the connection unit 30, the connection terminal 231 of the connection wire 23 formed in the control unit 20 and the terminal portion 312b of the control device side connection terminal portion 312 of the connection unit 30 are fastened together. As a result, the connection terminal 231 of the connection wire 23 formed in the control unit 20 and the terminal portion 312b of the control device side connection terminal portion 312 of the connection unit 30 are electrically connected. Furthermore, after the fastening component 342 is fastened to the fastening nut 322b, the terminal cover component 24 of the control unit 20 is fixed to the upper surface of the terminal protection wall portion 222 to block the opening portion 222a, thereby the connection terminal 231 of the connection wire 23 formed in the control unit 20 and the terminal portion 312b of the control device side connection terminal portion 312 of the connection unit 30 are covered by the terminal cover component 24, thereby the connection terminal 231 of the connection wire 23 formed in the control unit 20 and the terminal portion 312b of the control device side connection terminal portion 312 of the connection unit 30 are protected.

[0092] So, like Figure 6 to Figure 8As shown, the control unit 20 is arranged at a position opposite to the outer peripheral surface 131 of the drive unit housing 13, and is opposite to the outer peripheral surface 131 of the drive unit housing 13 at a predetermined interval radially outward. In addition, a space portion 50 is formed between the outer peripheral surface 131 of the drive unit housing 13 and the control unit 20, and the connection unit 30 is provided in a manner that the connection line 31 passes through the space portion 50 and extends in the left-right direction, and the rotating motor 11 of the drive unit 10 is electrically connected to the control device 21 of the control unit 20. In this embodiment, the relative direction between the outer peripheral surface 131 of the drive unit housing 13 and the control unit 20 is the up-down direction.

[0093] Thus, since the connection unit 30 is arranged in a manner that the connection line 31 passes through the space portion 50 surrounded by the drive unit housing 13 and the control unit 20, the electromagnetic noise generated from the connection line 31 is transmitted in the drive unit housing 13 and the control unit 20 and grounded. Thus, it is possible to suppress the electromagnetic noise generated from the connection line 31 from propagating to the outside such as the interior of the vehicle. Furthermore, since the connection unit 30 is arranged in a manner that the connection line 31 passes through the space portion 50 protected by the drive unit housing 13 and the control unit 20, it is possible to protect the connection line 31 without separately providing a protective component for protecting the connection line 31 in the event of a collision, and a protective component for preventing the connection line 31 from contacting other components and causing a short circuit, etc.

[0094] At this time, if Figure 6 As shown, the extension portion 310 of the connecting wire 31 of the connecting unit 30 is a flat bus bar. When viewed from the relative direction between the outer peripheral surface 131 of the drive unit housing 13 and the control unit 20, i.e., the up and down direction, the exposed portion 310a of the extension portion 310 of the connecting wire 31 is covered by the control unit 20.

[0095] Thus, in the connection unit 30, the electromagnetic noise generated from the exposed portion 310a of the extension portion 310 of the connection wire 31 is more reliably transmitted to the drive unit housing 13 and the control unit 20 and grounded, so that the electromagnetic noise generated from the connection wire 31 can be further suppressed from propagating to the interior of the vehicle, etc. In addition, since the extension portion 310 of the connection wire 31 is a flat bus bar, even if the interval between the outer peripheral surface 131 of the drive unit housing 13 and the control unit 20 in the space portion 50 is reduced, the connection unit 30 can be arranged in a manner that the connection wire 31 passes through the space portion 50. Therefore, the interval between the outer peripheral surface 131 of the drive unit housing 13 and the control unit 20 in the space portion 50 can be reduced, and the drive device 1 can be miniaturized.

[0096] In addition, if Figure 7 and Figure 8As shown, the connection unit 30 is arranged in a manner that the rotating electrical machine side connection terminal portion 311 is arranged on the right side of the control device 21 of the control unit 20 in the left-right direction, and the control device side connection terminal portion 312 is arranged on the left side of the control device 21 of the control unit 20.

[0097] Therefore, the connection wire 31 of the connection unit 30 can be connected to the control unit 20 at a position separated from the connection position of the connection wire 31 of the connection unit 30 and the rotating motor 11 of the drive unit 10. Therefore, even if the connection position of the connection wire 31 of the connection unit 30 and the rotating motor 11 of the drive unit 10 is arranged in a narrow space, the connection wire 31 of the connection unit 30 and the control unit 20 can be easily connected and removed. As a result, the assemblability of the control unit 20 to the drive device 1 is improved. In addition, since the connection wire 31 of the connection unit 30 and the control unit 20 can be easily connected and removed even if the control unit 20 is arranged in a manner to reduce the space around the connection position of the connection wire 31 of the connection unit 30 and the rotating motor 11 of the drive unit 10, the configuration freedom of the control unit 20 is improved, and the drive device 1 can be miniaturized.

[0098] <Internal combustion engine>

[0099] Back to Figure 1 and Figure 2 The internal combustion engine 40 is equipped with internal combustion engine auxiliary components for driving the internal combustion engine 40. The internal combustion engine auxiliary components installed in the internal combustion engine 40 are, for example, an alternator, an oil pump, a fuel injection pump, a water pump, a cooling water bypass unit, an intake manifold, an exhaust manifold, and the like.

[0100] In the present embodiment, the cooling water bypass unit 41 having a thermostat 42, which is one of the auxiliary components of the internal combustion engine, is installed to protrude axially from the internal combustion engine 40 toward the side where the drive unit 10 is arranged, i.e., the left side, at least a portion of which overlaps with the control unit 20 in the circumferential direction when viewed axially, i.e., above the drive unit 10.

[0101] The rotating electrical machine side connection terminal portion 311 of the connection unit 30 is arranged in a space 60 surrounded by the left wall portion of the internal combustion engine 40 , the cooling water bypass unit 41 , the outer peripheral surface 131 of the drive unit case 13 , and the control unit 20 .

[0102] At this time, the connection unit 30 is provided in such a manner that the control device side connection terminal portion 312 is arranged on the left side of the control device 21 of the control unit 20 in the left-right direction. Therefore, even if the space 60 surrounded by the left wall portion of the internal combustion engine 40, the cooling water bypass unit 41, the outer peripheral surface 131 of the drive unit case 13, and the control unit 20 where the rotating electric machine side connection terminal portion 311 of the connection unit 30 is arranged is small, the connection wire 31 of the connection unit 30 and the control unit 20 can be easily connected and disconnected on the opposite side of the axial direction of the control unit 20. As a result, the assemblability of the control unit 20 to the drive device 1 is improved. Furthermore, even if the rotating electric machine side connection terminal portion 311 of the connection unit 30 is arranged in a space 60 surrounded by the left wall portion of the internal combustion engine 40, the cooling water bypass unit 41, the outer peripheral surface 131 of the drive unit case 13, and the control unit 20, the connection wire 31 of the connection unit 30 and the control unit 20 can be easily connected and disconnected, so the degree of freedom of arrangement of the control unit 20 is improved, and the drive device 1 can be miniaturized.

[0103] Above, one embodiment of the present invention has been described with reference to the accompanying drawings, but the present invention is certainly not limited to this embodiment. Obviously, those skilled in the art can think of various variations or modifications within the scope described in the claims, and it should be understood that these variations and modifications also belong to the technical scope of the present invention. In addition, the various constituent elements in the above-mentioned embodiments can be arbitrarily combined within the scope of the main purpose of the invention.

[0104] For example, in the present embodiment, the extension portion 310 of the connection wire 31 of the connection unit 30 is a flat bus bar, but may be a braided wire.

[0105] In addition, for example, in the present embodiment, the control unit 20 is disposed above the drive unit 10, but the control unit 20 is not limited to being disposed above the drive unit 10, and may be disposed at a position relative to the outer peripheral surface 131 of the drive unit housing 13 of the drive unit 10. In other words, in the present embodiment, the relative direction between the outer peripheral surface 131 of the drive unit housing 13 and the control unit 20 is the up-and-down direction, but the relative direction may be any radial direction.

[0106] In addition, for example, in the present embodiment, the extending portion 310 of the connecting wire 31 of the connecting unit 30 extends in the axial direction, but may extend in the front-rear direction (circumferential direction).

[0107] In addition, for example, in the present embodiment, the cooling water bypass unit 41 having a thermostat 42, which is one of the auxiliary components of the internal combustion engine, is installed to protrude axially from the internal combustion engine 40 to the side on which the drive unit 10 is arranged, that is, the left side, at a position where at least a portion of it overlaps with the control unit 20 in the circumferential direction when viewed from the axial direction, that is, above the drive unit 10, and the auxiliary components of the internal combustion engine other than the cooling water bypass unit 41 having the thermostat 42 may also be installed to protrude axially from the internal combustion engine 40 to the side on which the drive unit 10 is arranged, at a position where at least a portion of it overlaps with the control unit 20 in the circumferential direction when viewed from the axial direction.

[0108] Furthermore, for example, in the present embodiment, the drive device 1 is mounted on a vehicle, but may be mounted on equipment other than a vehicle.

[0109] At least the following matters are described in this specification: In parentheses, corresponding components in the above-mentioned embodiment are shown as an example, but the present invention is not limited to this.

[0110] (1) A driving device (driving device 1), comprising:

[0111] A drive unit (drive unit 10) including a rotary motor (rotary motor 11) and a drive unit housing (drive unit housing 13) accommodating the rotary motor;

[0112] a control unit (control unit 20) having a control device (control device 21) for controlling the rotating electrical machine and a control unit housing (control unit housing 22) for housing the control device; and

[0113] a connection unit (connection unit 30) having a connection line (connection line 31) for electrically connecting the rotating electric machine and the control device,

[0114] Wherein, the connecting line has:

[0115] an extension portion (extension portion 310) extending in a prescribed direction;

[0116] a rotating electric machine side connection terminal portion (rotating electric machine side connection terminal portion 311 ) formed at one end portion of the extending portion and electrically connected to the rotating electric machine; and

[0117] a control device side connection terminal portion (control device side connection terminal portion 312), which is formed at the other end of the extension portion and is electrically connected to the control device,

[0118] The drive unit housing has an outer peripheral surface (outer peripheral surface 131) extending in the circumferential direction of the rotation axis (rotation axis RC) of the rotating electrical machine.

[0119] The control unit is arranged at a position opposite to the outer peripheral surface of the driving unit housing.

[0120] A space portion (space portion 50) is formed between the outer peripheral surface of the drive unit housing and the control unit.

[0121] The connection unit is provided so that the connection line passes through the space portion to electrically connect the rotating electric machine and the control device.

[0122] According to (1), since the connection unit is arranged in a manner that the connection line passes through the space surrounded by the drive unit housing and the control unit, the electromagnetic noise generated from the connection line is transmitted in the drive unit housing and the control unit and grounded. As a result, it is possible to suppress the electromagnetic noise generated from the connection line from propagating to the outside such as inside the vehicle interior. In addition, since the connection unit is arranged in a manner that the connection line passes through the space protected by the drive unit housing and the control unit, it is possible to protect the connection line without separately providing a protective component for protecting the connection line in the event of a collision, or a protective component for preventing the connection line from contacting other components and causing a short circuit, etc.

[0123] (2) The driving device according to (1), wherein:

[0124] The connecting unit comprises:

[0125] a rotating electrical machine side connection terminal housing (rotating electrical machine side connection terminal housing 321 ) that accommodates the rotating electrical machine side connection terminal portion; and

[0126] a control device side connection terminal housing (control device side connection terminal housing 322) for accommodating the control device side connection terminal portion,

[0127] The extension portion of the connection line is a flat bus bar and has an exposed portion (exposed portion 310a) exposed from the rotating electric machine side connection terminal housing and the control device side connection terminal housing.

[0128] The exposed portion is covered by the control unit when viewed from a direction in which the outer peripheral surface of the drive unit housing and the control unit face each other.

[0129] According to (2), since the exposed portion is covered by the control unit when viewed from the relative direction between the outer circumferential surface of the drive unit housing and the control unit, the electromagnetic noise generated from the exposed portion is more reliably transmitted and grounded between the drive unit housing and the control unit, and the electromagnetic noise generated from the connecting wire can be further suppressed from propagating to the interior of the vehicle, etc. Furthermore, since the extended portion of the connecting wire is a flat bus bar, even if the interval between the outer circumferential surface of the drive unit housing and the control unit in the space portion is reduced, the connecting unit can be arranged in a manner that the connecting wire passes through the space portion. Therefore, the interval between the outer circumferential surface of the drive unit housing and the control unit in the space portion can be reduced, and the drive device can be miniaturized.

[0130] (3) The driving device according to (1) or (2), wherein:

[0131] The connection unit is configured in the following manner:

[0132] In a first direction (left-right direction) orthogonal to a relative direction (up-down direction) between the outer peripheral surface of the drive unit housing and the control unit,

[0133] The extending portion extends in the first direction,

[0134] The rotating electrical machine side connection terminal portion is arranged on one end side (right end side) of the control device in the first direction,

[0135] The control device side connection terminal portion is arranged on the other end side (left end side) of the control device in the first direction.

[0136] According to (3), the connection unit is arranged in a manner that the connection terminal portion on the rotating motor side is arranged on one end side of the control device in the first direction, and the connection terminal portion on the control device side is arranged on the other end side of the control device in the first direction. Therefore, the connection line of the connection unit can be connected to the control unit at a position separated from the connection position of the connection line of the connection unit and the rotating motor. Therefore, even if the connection line of the connection unit and the connection position of the rotating motor are arranged in a narrow space, the connection line of the connection unit and the control unit can be easily connected and removed. As a result, the assemblability of the control unit to the drive device is improved. In addition, since the connection line of the connection unit and the control unit can be easily connected and removed even if the control unit is arranged in a manner to reduce the space around the connection position of the connection line of the connection unit and the rotating motor, the configuration freedom of the control unit is improved, and the drive device can be miniaturized.

[0137] (4) The driving device according to (3), wherein:

[0138] The driving device further comprises:

[0139] an internal combustion engine (ICE 40); and

[0140] An internal combustion engine auxiliary component (cooling water bypass unit 41), which is mounted on the internal combustion engine,

[0141] The internal combustion engine is arranged adjacent to one end side of the rotation axis of the drive unit in the axial direction,

[0142] The internal combustion engine auxiliary component is installed so as to protrude from the internal combustion engine in the axial direction toward the side where the drive unit is arranged, at least a portion of which overlaps with the control unit in the circumferential direction when viewed from the axial direction.

[0143] The first direction is the axial direction,

[0144] The rotating electrical machine side connection terminal portion is arranged in a space (space 60 ) surrounded by the internal combustion engine, the internal combustion engine auxiliary component, the outer peripheral surface of the drive unit case, and the control unit.

[0145] According to (4), even when the space surrounded by the internal combustion engine, the internal combustion engine auxiliary components, the outer peripheral surface of the drive unit housing, and the control unit, where the rotating motor side connection terminal portion of the connection unit is arranged, is relatively small, the connection wires and the control unit of the connection unit can be easily connected and removed on the axially opposite side of the control unit relative to the space. As a result, the assemblability of the control unit to the drive device is improved. Furthermore, even if the space is reduced to arrange the rotating motor side connection terminal portion of the connection unit, the connection wires and the control unit of the connection unit can be easily connected and removed, thereby improving the configuration freedom of the control unit and enabling the drive device to be miniaturized.

Claims

1. A driving device comprising: A drive unit having a rotary motor and a drive unit housing for accommodating the rotary motor; A control unit having a control device for controlling the rotating electrical machine and a control unit housing for accommodating the control device; as well as a connection unit having a connection line for electrically connecting the rotating electric machine and the control device, Wherein, the connecting line has: an extension portion extending in a prescribed direction; a rotating electric machine side connecting terminal portion, which is formed at one end portion of the extending portion and is electrically connected to the rotating electric machine; and a control device side connecting terminal portion, which is formed at the other end of the extending portion and is electrically connected to the control device, The drive unit housing has an outer peripheral surface extending in the circumferential direction of the rotation axis of the rotating electrical machine. The control unit is arranged at a position opposite to the outer peripheral surface of the driving unit housing. A space is formed between the outer peripheral surface of the drive unit housing and the control unit. The connection unit is configured in the following manner: In a first direction orthogonal to a relative direction between the outer peripheral surface of the drive unit housing and the control unit, the extension portion extends in the first direction, The rotating electrical machine side connection terminal portion is arranged on one end side of the control device in the first direction, and the control device side connection terminal portion is arranged on the other end side of the control device in the first direction. The insertion holes provided in the rotating electrical machine side connection terminal portion and the control device side connection terminal portion are arranged to penetrate in the relative direction. The connection wire passes through the space portion to electrically connect the rotating electric machine and the control device.

2. The driving device according to claim 1, wherein: The connecting unit comprises: a rotating electrical machine side connecting terminal housing that accommodates the rotating electrical machine side connecting terminal portion; and a control device side connection terminal housing, which accommodates the control device side connection terminal portion, The extension portion of the connection line is a flat bus bar and has an exposed portion exposed from the rotating electric machine side connection terminal case and the control device side connection terminal case. The exposed portion is covered by the control unit when viewed from a direction in which the outer peripheral surface of the drive unit housing and the control unit face each other.

3. The driving device according to claim 1 or 2, wherein: The driving device also has: Internal combustion engines; and An internal combustion engine auxiliary component, which is installed in the internal combustion engine, The internal combustion engine is arranged adjacent to one end side of the rotation axis of the drive unit in the axial direction. The internal combustion engine auxiliary component is installed so as to protrude from the internal combustion engine in the axial direction toward the side where the drive unit is arranged, at least a portion of which overlaps with the control unit in the circumferential direction when viewed from the axial direction. The first direction is the axial direction, The rotating electrical machine side connection terminal portion is arranged in a space surrounded by the internal combustion engine, the internal combustion engine auxiliary component, the outer peripheral surface of the drive unit case, and the control unit.

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