Drive unit

Abstract

To provide a driving device capable of suppressing propagation of electromagnetic noise generated from a connection line to the outside.SOLUTION: A driving device 1 includes a driving unit 10 having a rotary electric machine 11 and a driving unit case 13 accommodating the rotary electric machine 11, a control unit 20 having a control device 21 controlling the rotary electric machine 11, and a connection unit 30 having a connection line 31 electrically connecting the rotary electric machine 11 and the control device 21. The control unit 20 is arranged at a position faced to an outer peripheral surface 131 of the driving unit case 13, and a space portion 50 is formed between the outer peripheral surface 131 of the driving unit case 13 and the control unit 20. The connection unit 30 is provided so that the connection line 31 passes through the space portion 50 to electrically connect the rotary electric machine 11 and the control device 21.SELECTED DRAWING: Figure 7

Description

[Technical field]

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

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

[0003] In the drive device of Patent Document 1, the control unit is disposed in a position facing the outer peripheral surfaces 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 harness (connecting wire). The connection position between the three-phase AC harness (connecting wire) and the rotating electric machine and the connection position between the three-phase AC harness (connecting wire) and the control unit are both on the right side of the control unit, and the three-phase AC harness (connecting wire) is disposed in a space surrounded by the internal combustion engine, a bellows pipe which is one of the internal combustion engine auxiliary parts, the outer peripheral surface of the rotating electric machine, and the control unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2013-147046 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, because high-voltage power for driving the motor / generator flows through the three-phase AC harness (connecting wire) in Patent Document 1, electromagnetic noise is generated from the three-phase AC harness (connecting wire). Therefore, the drive device in Patent Document 1 has a problem in that electromagnetic noise generated from the three-phase AC harness (connecting wire) is easily propagated to the outside, such as inside the vehicle cabin.

[0006] The present invention provides a drive device capable of suppressing the propagation of electromagnetic noise generated from a connection line to the outside. [Means for solving the problem]

[0007] The present invention relates to a drive unit including a rotating electric machine and a drive unit case that houses the rotating electric machine; a control unit including a control device that controls the rotating electric machine and a control unit case that houses the control device; A drive device including: a connection unit having a connection line that electrically connects the rotating electric machine and the control device, The connecting line is An extension portion extending in a predetermined direction; a rotating electric machine side connection terminal portion formed at one end of the extension portion and electrically connected to the rotating electric machine; a control device side connection terminal portion formed at the other end of the extension portion and electrically connected to the control device, the drive unit case has an outer circumferential surface extending in a circumferential direction of a rotation axis of the rotating electric machine, the control unit is disposed at a position facing the outer circumferential surface of the drive unit case, a space is formed between the outer circumferential surface of the drive unit case and the control unit, The connection unit includes: the extending portion extends in a first direction perpendicular to a facing direction between the outer circumferential surface of the drive unit case and the control unit, the rotating electric machine side connection terminal portion is disposed on one end side of the control device in the first direction, and the control device side connection terminal portion is disposed on the other end side of the control device in the first direction, insertion holes provided in the rotating electric machine side connection terminal portion and the control device side connection terminal portion are arranged to penetrate in the opposing direction, The connection wire is provided to pass through the space and electrically connect the rotating electric machine and the control device. The present invention also provides a method for producing a semiconductor device comprising the steps of: a drive unit including a rotating electric machine and a drive unit case that houses the rotating electric machine; a control unit including a control device that controls the rotating electric machine and a control unit case that houses the control device; A drive device including: a connection unit having a connection line that electrically connects the rotating electric machine and the control device, The connecting line is An extension portion extending in a predetermined direction; a rotating electric machine side connection terminal portion formed at one end of the extension portion and electrically connected to the rotating electric machine; a control device side connection terminal portion formed at the other end of the extension portion and electrically connected to the control device, the drive unit case has an outer circumferential surface extending in a circumferential direction of a rotation axis of the rotating electric machine, the control unit is disposed at a position facing the outer circumferential surface of the drive unit case, a space is formed between the outer circumferential surface of the drive unit case and the control unit, The connection unit includes: a rotating electric machine side connection terminal housing that accommodates the rotating electric machine side connection terminal portion; a control device side connection terminal housing that accommodates the control device side connection terminal portion, The extension of the connection line is A flat bus bar, an exposed portion exposed from the rotating electric machine side connection terminal housing and the control device side connection terminal housing; the exposed portion is entirely covered by the control unit when viewed from a direction in which the outer circumferential surface of the drive unit case and the control unit face each other, The connection wire is provided to pass through the space and electrically connect the rotating electric machine and the control device. Effect of the Invention

[0008] According to the present invention, the connection unit is provided such that the connection line passes through the space surrounded by the drive unit case and the control unit, so that electromagnetic noise generated from the connection line is transmitted through the drive unit case and the control unit and is grounded, thereby making it possible to suppress the electromagnetic noise generated from the connection line from propagating to the outside. [Brief description of the drawings]

[0009] [Figure 1] 1 is a top view of a drive device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a view showing a main part of the AA cross section of FIG. [Diagram 3] FIG. 2 is a perspective view of a connection unit of the drive device of FIG. [Figure 4]2 is a perspective view showing a state in which a connection unit is attached to a drive unit of the drive device in FIG. 1. [Diagram 5] 2 is a perspective view showing a state in which a connection unit and a control unit are attached to a drive unit of the drive device of FIG. 1. [Figure 6] 6 is a top view of the connection unit and the control unit periphery of FIG. 5 as viewed from above. [Figure 7] 7 is a view showing a main part of the cross section taken along the line BB in FIG. 6. [Figure 8] FIG. 7 is a perspective view showing a main part of the cross section taken along the line BB in FIG. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, as one embodiment of the drive device of the present invention, a drive device mounted on a vehicle will be described with reference to the accompanying drawings. The drawings are to be viewed in the direction of the reference symbols. In order to simplify and clarify the description in this specification, the front / rear, left / right, and up / down directions are described according to the direction as seen by the driver of the vehicle, and in the drawings, the front of the vehicle is indicated as Fr, the rear as Rr, the left as L, the right as R, the up as U, and the down as D. In this specification, the left / right direction is also referred to as the vehicle width direction.

[0011] <Overall configuration of the drive unit> As shown in FIGS. 1 and 2, the drive device 1 of this embodiment includes a drive unit 10, a control unit 20, a connection unit 30, and an internal combustion engine 40.

[0012] The control unit 20 is disposed above the drive unit 10. The connection unit 30 is disposed between the drive unit 10 and the control unit 20. The internal combustion engine 40 is disposed adjacent to the right side of the drive unit 10.

[0013] <Drive unit> The drive unit 10 includes a rotating electric machine 11, a transmission 12, and a drive unit case 13 that houses the rotating electric machine 11 and the transmission 12.

[0014] The rotating electric machine 11 is disposed so that a rotation axis RC is aligned with the vehicle width direction (left-right direction). The rotating electric machine 11 includes a rotating shaft 111 having the rotation axis RC as its axis.

[0015] In this specification and the like, unless otherwise specified, the axial direction, radial direction, and circumferential direction refer to directions based on the rotation axis RC of the rotating electric machine 11. In this embodiment, the axial direction coincides with the vehicle width direction (left-right direction).

[0016] As shown in FIG. 2, the rotating electric machine 11 and the transmission 12 are disposed adjacent to each other in the vehicle width direction, with the rotating electric machine 11 on the right side and the transmission 12 on the left side.

[0017] The transmission 12 is coupled to the rotating shaft 111 of the rotating electric machine 11 and includes an input shaft 121 to which the rotational power of the rotating electric machine 11 is input from the rotating shaft 111. The input shaft 121 of the transmission 12 has a rotation axis which coincides with the rotation axis RC of the rotating electric machine 11 and is coaxial with the rotating shaft 111 of the rotating electric machine 11.

[0018] The drive unit case 13 is partitioned into a rotating electric machine accommodating section 130a that accommodates the rotating electric machine 11 and a transmission accommodating section 130b that accommodates the transmission 12. The rotating electric machine accommodating section 130a is on the right side, and the transmission accommodating section 130b is on the left side, and the two are disposed adjacent to each other in the vehicle width direction.

[0019] The drive unit case 13 has an outer peripheral surface 131 that extends in the circumferential direction in a cylindrical shape surrounding the rotating electric machine 11 and the transmission 12 when viewed from the axial direction, a left side wall portion 132 that closes the left end portion of the outer peripheral surface 131 and forms the left side surface of the drive unit case 13, and a partition wall 133 that is provided inside the cylindrical outer peripheral surface 131 and divides a rotating electric machine accommodating portion 130a and a transmission accommodating portion 130b. In this embodiment, the right end portion of the outer peripheral surface 131 is open and abuts against a left wall portion of the internal combustion engine 40 described later. The opening at the right end portion of the outer peripheral surface 131 is closed by the left wall portion of the internal combustion engine 40 described later, and the right end portion of the rotating electric machine accommodating portion 130a is sealed by the left wall portion of the internal combustion engine 40.

[0020] The drive unit case 13 is divided into a right case 13R that constitutes the right area of ​​the outer peripheral surface 131 of the drive unit case 13 and the partition wall 133, and a left case 13L that constitutes the left area of ​​the outer peripheral surface 131 of the drive unit case 13 and the left side wall portion 132.

[0021] <Control unit> As shown in Figures 5 to 8, the control unit 20 includes a control device 21 that controls the rotating electric machine 11 of the drive unit 10, a control unit case 22 that houses the control device 21, and three connection wires 23 that are electrically connected to the control device 21.

[0022] The control device 21 includes, for example, a step-up / step-down converter, an inverter that converts between DC power and three-phase AC power, a reactor, a capacitor unit, and the like.

[0023] The control unit case 22 extends in the front-rear and left-right directions and is made of a conductive material such as metal. The control unit case 22 includes a substantially flat upper wall portion 22U that constitutes the upper surface of the control unit case 22, a substantially flat bottom wall portion 22D that faces the upper wall portion 22U and extends in the front-rear and left-right directions and constitutes the lower surface of the control unit case 22, a left wall portion 22L that extends in the up-down and front-rear directions from the left edge of the upper wall portion 22U to the left edge of the bottom wall portion 22D and constitutes the left side surface of the control unit case 22, and a right wall portion 22L that extends in the up-down and front-rear directions from the right edge of the upper wall portion 22U to the bottom wall portion 22D. The control unit case 22 has a right wall portion 22R that extends in the vertical and front-to-rear directions to the right edge of the upper wall portion 22U and constitutes the right side of the control unit case 22, a front wall portion 22F that extends in the vertical and left-to-right directions from the front edge of the upper wall portion 22U to the front edge of the bottom wall portion 22D and constitutes the front surface of the control unit case 22, and a rear wall portion 22B that extends in the vertical and left-to-right directions from the rear edge of the upper wall portion 22U to the rear edge of the bottom wall portion 22D and constitutes the rear surface of the control unit case 22.

[0024] The three connection wires 23 are all flat bus bars. The three connection wires 23 extend parallel to one another and pass through insertion holes 221 provided in the left wall portion 22L of the control unit case 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 case 22. A connection terminal 231 that connects to a connection unit 30 described later is formed on the other end of the connection wire 23. Each connection terminal 231 has a flat rectangular shape that is approximately perpendicular to the vertical direction, and is provided with an insertion hole that penetrates in the vertical direction.

[0025] A terminal protection wall 222 is provided on the left wall 22L of the control unit case 22 so as to protrude outward to the left from the left wall 22L of the control unit case 22 and surround the upper, left, front, and rear of the connection terminals 231 of the three connection lines 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 covers the opening 222a on the upper surface of the terminal protection wall 222.

[0026] <Connection unit> 3, the connection unit 30 includes three connection lines 31 that electrically connect the rotating electric machine 11 of the drive unit 10 and the control device 21 of the control unit 20. The three connection lines 31 extend in parallel in the left-right direction.

[0027] Each connection line 31 has an extension portion 310 extending in the left-right direction, a rotating electric machine side connection terminal portion 311 formed at the left end of the extension portion 310 and electrically connected to the rotating electric machine 11 of the drive unit 10, and a control device side connection terminal portion 312 formed at the right end of the extension portion 310 and electrically connected to the control device 21 of the control unit 20. In this embodiment, the extension portion 310 is a flat bus bar.

[0028] The rotating electric machine side connection terminal portion 311 extends leftward from the left end of the extension portion 310 and has a flat rectangular shape substantially perpendicular to the up-down direction. The rotating electric machine side connection terminal portion 311 is provided with an insertion hole that penetrates in the up-down direction.

[0029] The control device side connection terminal portion 312 has a bent portion 312a that is bent upward from the right end of the connection line 31 and extends in the vertical direction, and a terminal portion 312b that is bent rightward from the upper end of the bent portion 312a and has a flat rectangular shape that is approximately perpendicular to the vertical direction. The terminal portion 312b is provided with an insertion hole that penetrates in the vertical direction.

[0030] The connection unit 30 includes a rotating electric machine side connection terminal housing 321 that houses the rotating electric machine side connection terminal portion 311 , and a control device side connection terminal housing 322 that houses the control device side connection terminal portion 312 .

[0031] The rotating electric machine side connection terminal housing 321 covers the rotating electric machine side connection terminal portion 311 and a part of the left end side of the extension portion 310 .

[0032] The rotating electric machine side connection terminal housing 321 has a lower case 321a that covers the rotating electric machine side connection terminal portion 311 from below and opens upward, and an upper cover 321b (see FIGS. 4, 7, and 8) that closes the upward opening of the lower case 321a. Three conductive pedestals 321c are fixed to the lower case 321a. Each conductive pedestal 321c is made of a conductive material such as metal and has a substantially rectangular parallelepiped shape extending in the vertical direction, with a flange-shaped upper end. Each conductive pedestal 321c is provided with an insertion hole that penetrates in the vertical direction. The rotating electric machine side connection terminal portion 311 is placed on each conductive pedestal 321c. The rotating electric machine side connection terminal portion 311 is placed on the conductive pedestal 321c so that the insertion hole overlaps with the insertion hole of the conductive pedestal 321c.

[0033] Control device side connection terminal housing 322 covers control device side connection terminal portion 312 and a portion of the right end side of extension portion 310 .

[0034] The control device side connection terminal housing 322 has a lower case 322a that covers the control device side connection terminal portion 312 from below and opens upward, and a fastening nut 322b fixed to the lower case 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 such that an insertion hole overlaps with the fastening nut 322b.

[0035] The extending portions 310 of the connection wires 31 have exposed portions 310a exposed from the rotating electric 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 that covers the exposed portions 310a of the three connection wires 31 (see FIGS. 4 and 8). The cover member 33 is formed of an insulating material such as rubber. Therefore, the exposed portions 310a are exposed from the rotating electric machine side connection terminal housing 321 and the control device side connection terminal housing 322, but are covered by the cover member 33.

[0036] <Layout of control unit and connection unit> 4 and 6 to 8, the connection unit 30 is fixed to an outer circumferential surface 131 of the drive unit case 13 of the drive unit 10. In this embodiment, the connection unit 30 is fixed to an upper part of the outer circumferential surface 131 of the drive unit case 13.

[0037] The connection unit 30 has a connection line 31 extending in the left-right direction, and a rotating motor side connection terminal housing 321 is fixed to the right side case 13R at the top of the rotating motor accommodating section 130a of the drive unit case 13, and a control device side connection terminal housing 322 is fixed to the left side case 13L at the top of the transmission accommodating section 130b of the drive unit case 13.

[0038] Then, a fastening member 341 such as a bolt is inserted from above through the insertion hole of the rotating electric machine side connection terminal portion 311 and the insertion hole of the conductive pedestal 321c, and fastened to a connection terminal (not shown) of the rotating electric machine 11 exposed on the outer circumferential surface 131 of the drive unit case 13, thereby fastening the rotating electric machine side connection terminal portion 311, the conductive pedestal 321c, and the connection terminal of the rotating electric machine 11 together. This electrically connects the rotating electric machine side connection terminal portion 311 and the connection terminal of the rotating electric machine 11 via the conductive pedestal 321c. Then, after fastening the fastening member 341 to the connection terminal of the rotating electric machine 11, the upper cover 321b is fixed to the lower case 321a, so that the upper part of the rotating electric machine side connection terminal portion 311 is covered by the upper cover 321b, and the rotating electric machine side connection terminal portion 311 is protected.

[0039] 5 to 8, the control unit 20 is disposed above the connection unit 30. Therefore, the control unit 20 is disposed at a position facing the outer circumferential surface 131 of the drive unit case 13 with the connection unit 30 in between. At this time, the control unit 20 is disposed above the connection unit 30 such that the insertion holes of the connection terminals 231 formed on the three connection lines 23 of the control unit 20 overlap with the insertion holes provided in the terminal portions 312b of the control device side connection terminal portions 312 formed on each connection line 31 of the connection unit 30.

[0040] The control unit case 22 is fastened to the outer peripheral surface 131 of the drive unit case 13 of the drive unit 10 by fastening members 25 such as bolts at three locations: approximately the left-right central portion of the front wall portion 22F, the rear end portion of the left wall portion 22L, and a portion slightly to the right of approximately the left-right central portion of the rear wall portion 22B.

[0041] Then, a fastening member 342 such as a bolt is inserted from above into the insertion hole of the connection terminal 231 formed in the connection line 23 of the control unit 20 and the insertion hole provided in the terminal portion 312b of the control device side connection terminal portion 312 of the connection unit 30, and fastened to the fastening nut 322b of the connection unit 30, thereby fastening together the connection terminal 231 formed in the connection line 23 of the control unit 20 and the terminal portion 312b of the control device side connection terminal portion 312 of the connection unit 30. As a result, the connection terminal 231 formed in the connection line 23 of 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. Then, after fastening member 342 is fastened to fastening nut 322b, terminal cover member 24 of control unit 20 is fixed to the upper surface of terminal protection wall portion 222 to close opening 222a, whereby connection terminal 231 formed on connection line 23 of control unit 20 and the upper portion of terminal portion 312b of control device side connection terminal portion 312 of connection unit 30 are covered by terminal cover member 24, thereby protecting connection terminal 231 formed on connection line 23 of control unit 20 and terminal portion 312b of control device side connection terminal portion 312 of connection unit 30.

[0042] 6 to 8, the control unit 20 is disposed at a position facing the outer peripheral surface 131 of the drive unit case 13, and faces the outer peripheral surface 131 of the drive unit case 13 at a predetermined distance radially outward. A space 50 is formed between the outer peripheral surface 131 of the drive unit case 13 and the control unit 20, and the connection unit 30 is provided such that the connection wire 31 extends in the left-right direction through the space 50 to electrically connect the rotating electric machine 11 of the drive unit 10 and the control device 21 of the control unit 20. In this embodiment, the outer peripheral surface 131 of the drive unit case 13 and the control unit 20 face each other in the up-down direction.

[0043] As a result, the connection unit 30 is provided so that the connection line 31 passes through the space 50 surrounded by the drive unit case 13 and the control unit 20, and thus electromagnetic noise generated from the connection line 31 is grounded by transmitting through the drive unit case 13 and the control unit 20. This makes it possible to prevent the electromagnetic noise generated from the connection line 31 from propagating to the outside, such as inside the vehicle cabin. Furthermore, the connection unit 30 is provided so that the connection line 31 passes through the space 50 protected by the drive unit case 13 and the control unit 20, and thus the connection line 31 can be protected without separately providing a protective member for protecting the connection line 31 in the event of a collision and a protective member for preventing the connection line 31 from coming into contact with other members to cause a short circuit or the like.

[0044] At this time, as shown in FIG. 6 , the extension portion 310 of the connection line 31 of the connection unit 30 is a flat bus bar, and the exposed portion 310a of the extension portion 310 of the connection line 31 is covered by the control unit 20 when viewed from the top-bottom direction, which is the opposing direction between the outer circumferential surface 131 of the drive unit case 13 and the control unit 20.

[0045] As a result, in the connection unit 30, electromagnetic noise generated from the exposed portion 310a of the extension portion 310 of the connection line 31 is more reliably transmitted to the drive unit case 13 and the control unit 20 and grounded, so that the electromagnetic noise generated from the connection line 31 can be more reliably prevented from propagating into the vehicle interior, etc. Furthermore, since the extension portion 310 of the connection line 31 is a flat bus bar, even if the gap between the outer circumferential surface 131 of the drive unit case 13 and the control unit 20 in the space portion 50 is reduced, the connection unit 30 can be provided so that the connection line 31 passes through the space portion 50. Therefore, the gap between the outer circumferential surface 131 of the drive unit case 13 and the control unit 20 in the space portion 50 can be reduced, and the drive device 1 can be made smaller in size.

[0046] Also, as shown in Figures 7 and 8, the connection unit 30 is arranged in the left-right direction so that the rotating machine side connection terminal portion 311 is arranged to the right of the control device 21 of the control unit 20, and the control device side connection terminal portion 312 is arranged to the left of the control device 21 of the control unit 20.

[0047] Therefore, the connection line 31 of the connection unit 30 and the control unit 20 can be connected at a position separated from the connection position between the connection line 31 of the connection unit 30 and the rotating electric machine 11 of the drive unit 10. Therefore, even if the connection position between the connection line 31 of the connection unit 30 and the rotating electric machine 11 of the drive unit 10 is arranged in a narrow space, the connection line 31 of the connection unit 30 and the control unit 20 can be easily connected and disconnected. This improves the ease of assembly of the control unit 20 to the drive device 1. Furthermore, even if the control unit 20 is arranged so as to reduce the space around the connection position between the connection line 31 of the connection unit 30 and the rotating electric machine 11 of the drive unit 10, the connection line 31 of the connection unit 30 and the control unit 20 can be easily connected and disconnected, so that the freedom of arrangement of the control unit 20 is improved and the drive device 1 can be made smaller.

[0048] <Internal combustion engine> 1 and 2, the internal combustion engine 40 is equipped with internal combustion engine auxiliary parts for driving the internal combustion engine 40. Examples of the internal combustion engine auxiliary parts installed on the internal combustion engine 40 include an alternator, an oil pump, a fuel injection pump, a water pump, a cooling water bypass unit, an intake manifold, and an exhaust manifold.

[0049] In this embodiment, a cooling water bypass unit 41 having a thermostat 42, which is one of the auxiliary components of the internal combustion engine, is mounted 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, i.e., above the drive unit 10, and protrudes axially from the internal combustion engine 40 on the side where the drive unit 10 is located, i.e., to the left.

[0050] The rotating electric machine side connection terminal portion 311 of the connection unit 30 is disposed 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.

[0051] At this time, the connection unit 30 is provided so that the control device side connection terminal portion 312 is disposed 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 circumferential surface 131 of the drive unit case 13, and the control unit 20, in which the rotating electric machine side connection terminal portion 311 of the connection unit 30 is disposed, is small, the connection line 31 of the connection unit 30 and the control unit 20 can be easily connected and disconnected on the axially opposite side of the control unit 20. This improves the ease of assembly of the control unit 20 to the drive device 1. Furthermore, 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 is made smaller and the rotating electric machine side connection terminal portion 311 of the connection unit 30 is arranged, the connection wire 31 of the connection unit 30 and the control unit 20 can be easily connected and disconnected, thereby improving the freedom of arrangement of the control unit 20 and enabling the drive device 1 to be made smaller.

[0052] Although one embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such an embodiment. It is clear that a person skilled in the art can come up with various modified or revised examples within the scope of the claims, and it is understood that these also naturally belong to the technical scope of the present invention. In addition, the components in the above embodiment may be arbitrarily combined within the scope of the invention.

[0053] For example, in the present embodiment, the extending portion 310 of the connection line 31 of the connection unit 30 is a flat bus bar, but it may be a braided wire.

[0054] Also, for example, in this embodiment, the control unit 20 is arranged above the drive unit 10, but the control unit 20 is not limited to being arranged above the drive unit 10, as long as it is arranged at a position facing the outer circumferential surface 131 of the drive unit case 13 of the drive unit 10. In other words, in this embodiment, the facing direction between the outer circumferential surface 131 of the drive unit case 13 and the control unit 20 is the up-down direction, but the facing direction may be any radial direction.

[0055] Also, for example, in this embodiment, the extending portion 310 of the connection line 31 of the connection unit 30 extends in the axial direction, but it may extend in the front-rear direction (circumferential direction).

[0056] Also, for example, in the present embodiment, the cooling water bypass unit 41 having the thermostat 42, which is one of the internal combustion engine auxiliary parts, is attached 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, i.e., above the drive unit 10, and protrudes axially from the internal combustion engine 40 to the side where the drive unit 10 is located, i.e., to the left. However, an internal combustion engine auxiliary part other than the cooling water bypass unit 41 having the thermostat 42 may be attached 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, and protrudes axially from the internal combustion engine 40 to the side where the drive unit 10 is located.

[0057] Also, for example, in this embodiment, the drive device 1 is mounted on a vehicle, but it may be mounted on equipment other than a vehicle.

[0058] This specification describes at least the following items. In parentheses, components corresponding to the above-described embodiment are shown as examples, but the present invention is not limited to these.

[0059] (1) a drive unit (drive unit 10) having a rotating electric machine (rotating electric machine 11) and a drive unit case (drive unit case 13) that houses the rotating electric machine; a control unit (control unit 20) including a control device (control device 21) that controls the rotating electric machine and a control unit case (control unit case 22) that houses the control device; A drive device (drive device 1) including a connection unit (connection unit 30) having a connection line (connection line 31) that electrically connects the rotating electric machine and the control device, The connecting line is An extension portion (extension portion 310) extending in a predetermined direction; a rotating electric machine side connection terminal portion (rotating electric machine side connection terminal portion 311) formed at one end of the extension portion and electrically connected to the rotating electric machine; A control device side connection terminal portion (control device side connection terminal portion 312) formed at the other end of the extension portion and electrically connected to the control device, The drive unit case has an outer circumferential surface (outer circumferential surface 131) extending in a circumferential direction of a rotation axis (rotation axis RC) of the rotating electric machine, the control unit is disposed at a position facing the outer circumferential surface of the drive unit case, A space (space 50) is formed between the outer circumferential surface of the drive unit case and the control unit, The connection unit is provided such that the connection line passes through the space to electrically connect the rotating electric machine and the control device.

[0060] According to (1), the connection unit is provided so that the connection line passes through a space surrounded by the drive unit case and the control unit, so that electromagnetic noise generated from the connection line is grounded by transmitting through the drive unit case and the control unit. This makes it possible to prevent electromagnetic noise generated from the connection line from propagating to the outside, such as inside the vehicle cabin. Furthermore, the connection unit is provided so that the connection line passes through a space protected by the drive unit case and the control unit, so that the connection line can be protected without providing a separate protective member for protecting the connection line in the event of a collision and a separate protective member for preventing the connection line from coming into contact with other members and causing a short circuit, etc.

[0061] (2) The drive device according to (1), The connection unit includes: a rotating electric machine side connection terminal housing (rotating electric machine side connection terminal housing 321) that accommodates the rotating electric machine side connection terminal portion; A control device side connection terminal housing (control device side connection terminal housing 322) that accommodates the control device side connection terminal portion, The extension of the connection line is A flat bus bar, The connecting terminal housing includes an exposed portion (exposed portion 310a) exposed from the rotating electric machine side connecting terminal housing and the control device side connecting terminal housing, A drive device, wherein the exposed portion is covered by the control unit when viewed from a direction in which the outer circumferential surface of the drive unit case and the control unit face each other.

[0062] According to (2), the exposed portion is covered by the control unit when viewed from the opposing direction of the outer circumferential surface of the drive unit case and the control unit, so that electromagnetic noise generated from the exposed portion is more reliably transmitted through the drive unit case and the control unit and grounded, and propagation of electromagnetic noise generated from the connecting line into the vehicle interior, etc. is more effectively suppressed. Furthermore, since the extending portion of the connecting line is a flat bus bar, even if the gap between the outer circumferential surface of the drive unit case and the control unit in the space is small, the connecting unit can be provided so that the connecting line passes through the space. Therefore, the gap between the outer circumferential surface of the drive unit case and the control unit in the space can be small, and the drive device can be made smaller.

[0063] (3) The drive device according to (1) or (2), The connection unit includes: In a first direction (left-right direction) perpendicular to a facing direction (up-down direction) between the outer circumferential surface of the drive unit case and the control unit, The extension portion extends in the first direction, the rotating electric machine side connection terminal portion is disposed on one end side (right end side) of the control device in the first direction, The drive device is provided so that the control device side connection terminal portion is disposed on the other end side (left end side) of the control device in the first direction.

[0064] According to (3), the connection unit is provided so that the rotating electric machine side connection terminal portion is disposed on one end side of the control device in the first direction and the control device side connection terminal portion is disposed on the other end side of the control device in the first direction, so that the connection line of the connection unit can be connected to the control unit at a position separated from the connection position between the connection line of the connection unit and the rotating electric machine. Therefore, even if the connection position between the connection line of the connection unit and the rotating electric machine is disposed in a narrow space, the connection line of the connection unit and the control unit can be easily connected and disconnected. This improves the ease of assembly of the control unit to the drive device. Furthermore, even if the control unit is disposed so as to reduce the space around the connection position between the connection line of the connection unit and the rotating electric machine, the connection line of the connection unit and the control unit can be easily connected and disconnected, so that the freedom of arrangement of the control unit is improved and the drive device can be made smaller.

[0065] (4) The drive device according to (3), The drive device is An internal combustion engine (internal combustion engine 40); and an internal combustion engine auxiliary part (a cooling water bypass unit 41) attached to the internal combustion engine, the internal combustion engine is disposed adjacent to one end side of the drive unit in an axial direction of the rotation axis, the internal combustion engine auxiliary component is attached to the internal combustion engine in such a manner that at least a portion of the internal combustion engine auxiliary component overlaps with the control unit in the circumferential direction as viewed in the axial direction, and protrudes from the internal combustion engine toward a side where the drive unit is disposed in the axial direction, the first direction is the axial direction, A drive device, wherein the rotating electric 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.

[0066] According to (4), even if the space surrounded by the internal combustion engine, the auxiliary parts of the internal combustion engine, the outer peripheral surface of the drive unit case, and the control unit in which the rotating electric machine side connection terminal portion of the connection unit is arranged is small, the connection wire of the connection unit and the control unit can be easily connected and disconnected on the axially opposite side of the control unit with respect to the space. This improves the ease of assembly of the control unit to the drive device. Furthermore, even if the space is made small and the rotating electric machine side connection terminal portion of the connection unit is arranged, the connection wire of the connection unit and the control unit can be easily connected and disconnected, which improves the freedom of arrangement of the control unit and allows the drive device to be made smaller. [Explanation of symbols]

[0067] 1 Drive unit 10 Drive unit 11 Rotating Electric Machines 13 Drive unit case 131 Outer surface 20 Control Unit 21 Control device 22 Control unit case 30 Connection Unit 31 Connecting Line 310 Extension 310a Exposed part 311 Rotating electric machine side connection terminal 312 Control device side connection terminal 321 Rotating motor side connection terminal housing 322 Control device side connection terminal housing 40 Internal Combustion Engine 41 Cooling water bypass unit (internal combustion engine auxiliary parts) 50 Space 60 space RC rotation axis

Claims

1. a drive unit including a rotating electric machine and a drive unit case that houses the rotating electric machine; a control unit including a control device that controls the rotating electric machine and a control unit case that houses the control device; A drive device including: a connection unit having a connection line that electrically connects the rotating electric machine and the control device, The connecting line is An extension portion extending in a predetermined direction; a rotating electric machine side connection terminal portion formed at one end of the extension portion and electrically connected to the rotating electric machine; a control device side connection terminal portion formed at the other end of the extension portion and electrically connected to the control device, the drive unit case has an outer circumferential surface extending in a circumferential direction of a rotation axis of the rotating electric machine, the control unit is disposed at a position facing the outer circumferential surface of the drive unit case, a space is formed between the outer circumferential surface of the drive unit case and the control unit, The connection unit includes: the extending portion extends in a first direction perpendicular to a facing direction between the outer circumferential surface of the drive unit case and the control unit, the rotating electric machine side connection terminal portion is disposed on one end side of the control device in the first direction, and the control device side connection terminal portion is disposed on the other end side of the control device in the first direction, insertion holes provided in the rotating electric machine side connection terminal portion and the control device side connection terminal portion are arranged to penetrate in the opposing direction, The connection wire is provided to pass through the space and electrically connect the rotating electric machine and the control device.

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

3. 3. The drive device according to claim 1 or 2, The drive device is An internal combustion engine; and an internal combustion engine auxiliary component attached to the internal combustion engine, the internal combustion engine is disposed adjacent to one end side of the drive unit in an axial direction of the rotation axis, the internal combustion engine auxiliary component is attached to the internal combustion engine in such a manner that at least a portion of the internal combustion engine auxiliary component overlaps with the control unit in the circumferential direction as viewed in the axial direction, and protrudes from the internal combustion engine toward a side where the drive unit is disposed in the axial direction, the first direction is the axial direction, A drive device, wherein the rotating electric machine side connection terminal portion is disposed 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.

4. A drive unit having a rotating electric machine and a drive unit case that houses the rotating electric machine; a control unit including a control device that controls the rotating electric machine and a control unit case that houses the control device; A drive device including: a connection unit having a connection line that electrically connects the rotating electric machine and the control device, The connecting line is An extension portion extending in a predetermined direction; a rotating electric machine side connection terminal portion formed at one end of the extension portion and electrically connected to the rotating electric machine; a control device side connection terminal portion formed at the other end of the extension portion and electrically connected to the control device, the drive unit case has an outer circumferential surface extending in a circumferential direction of a rotation axis of the rotating electric machine, the control unit is disposed at a position facing the outer circumferential surface of the drive unit case, a space is formed between the outer circumferential surface of the drive unit case and the control unit, The connection unit includes: a rotating electric machine side connection terminal housing that accommodates the rotating electric machine side connection terminal portion; a control device side connection terminal housing that accommodates the control device side connection terminal portion, The extension of the connection line is A flat bus bar, an exposed portion exposed from the rotating electric machine side connection terminal housing and the control device side connection terminal housing; the exposed portion is entirely covered by the control unit when viewed from a direction in which the outer circumferential surface of the drive unit case and the control unit face each other, The connection wire is provided to pass through the space and electrically connect the rotating electric machine and the control device.

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