WO2020175617A1

WO2020175617A1 - Vehicle drive device

Info

Publication number: WO2020175617A1
Application number: PCT/JP2020/008016
Authority: WO
Inventors: 任田　功; 晴洋平野; 米盛　敬; 智志丸山
Original assignee: マツダ株式会社
Priority date: 2019-02-27
Filing date: 2020-02-27
Publication date: 2020-09-03

Abstract

Provided is a vehicle drive device with which it is possible to suppress a deterioration in vehicle weight balance and movement performance while being provided with a drive motor, an internal combustion engine, and an electricity generator. The present invention provides a vehicle drive device (1) for driving a vehicle (11) by means of the motive force of a motor, characterized by being provided with a drive motor (4) driven by electric power, an internal combustion engine (2) which uses fuel to generate a motive force, and an electricity generator (6) driven by the internal combustion engine (2), wherein the drive motor (4), the internal combustion engine (2), and the electricity generator (6) are disposed in the width direction of the vehicle (11), in the order: drive motor (4), internal combustion engine (2), electricity generator (6).

Description

\¥02020/175617 1 (: 17 2020/008016

Specification

Title of invention: Vehicle drive device

Technical field

The present invention relates to a vehicle drive device, and more particularly to a vehicle drive device that drives a vehicle by the power of a motor.

Background technology

[0002] Japanese Unexamined Patent Publication No. 6-3298905 (Patent Document 1) describes a hybrid vehicle. In this hybrid vehicle, the electric motor, automatic transmission, clutch, generator and engine are arranged in this order in the vehicle width direction, coaxially with the output shaft of the engine, and housed in an integrated case. ing. That is, the generator is arranged adjacent to the engine, the electric motor is arranged at the outer end, and the output gear and the clutch of the automatic transmission are arranged between them. Normally, the clutch is disengaged, the generator drives the engine, and the rotation of the electric motor is transmitted to the drive axle via the automatic transmission, the output gear arranged in the center, and the differential device.

Prior art documents

Patent literature

[0003] Patent Document 1: Japanese Patent Laid-Open No. 6-3 2 8 9 5 0

Summary of the invention

Problems to be Solved by the Invention

However, in the vehicle drive device provided in the hybrid vehicle described in Patent Document 1, since the heavy engine is arranged at the end of the vehicle drive system, the side on which the engine of the vehicle is arranged is heavy. Therefore, there is a problem that the left and right weight balance of the vehicle becomes poor. Furthermore, since a heavy engine is placed near the side surface of the vehicle, there is a problem in that the inertial moment around the yaw axis and the axle axis of the vehicle becomes large, which lowers the vehicle's dynamic performance.

[0005] Therefore, the present invention provides a vehicle equipped with a drive motor, an internal combustion engine, and a generator. 〇 2020/175617 2 卩(: 171-1? 2020/008016

It is an object of the present invention to provide a vehicle drive device capable of suppressing the weight balance between the two and the deterioration of the exercise performance.

Means for solving the problem

[0006] In order to solve the above-mentioned problems, the present invention is a vehicle drive device for driving a vehicle by the power of a motor, the drive motor being driven by electric power, and an internal combustion engine generating power by fuel. And a generator driven by the internal combustion engine, and the drive motor, the internal combustion engine, and the generator are arranged in the vehicle width direction in the order of the drive motor, the internal combustion engine, and the generator. Is characterized by.

According to the present invention having such a configuration, the drive motor, the internal combustion engine, and the generator are arranged in this order in the vehicle width direction of the vehicle. As a result, the relatively heavy internal combustion engine is located between the drive motor and the generator, so that the left-right weight balance of the vehicle is less likely to be disturbed, and it is possible to prevent the weight balance from deteriorating. In addition, since the internal combustion engine is located between the drive motor and the generator, the internal combustion engine is located relatively inward in the vehicle width direction, which reduces the moment of inertia around the yaw axis and the axle axis of the vehicle. It is possible to suppress deterioration of exercise performance.

[0008] In the present invention, preferably, the internal combustion engine is a mouth rotary piston engine or a horizontally opposed engine.

Among internal combustion engines, the mouth Talibiston engine and the horizontally opposed engine are generally lower in overall height than other types of internal combustion engines. According to the present invention configured as described above, since the internal combustion engine is a mouth Talibiston engine or a horizontally opposed engine, even if it is placed between the drive motor and the generator, it will be an obstacle in the motor room. Hateful. Therefore, even if the internal combustion engine is placed between the drive motor and the generator, the space in the motor room can be effectively utilized.

[0009] In the present invention, preferably, the internal combustion engine is a mouth Talibiston engine, and the intake pipe and the exhaust pipe of the mouth Talypiston engine are from the rear side in the vehicle front-rear direction of the mouth Talipiston engine. Extends to the rear of the vehicle 〇 2020/175617 3 (: 171-1?2020/008016

[0010]-In general, in the inline type engine and the V type engine, the intake pipe and the exhaust pipe extend from both sides of the engine, and in the mouth rotary piston engine, the intake pipe and the exhaust pipe extend from one side of the engine. Can be configured as follows. According to the present invention configured as described above, the mouth rotary piston engine is adopted as the internal combustion engine, and the intake pipe and the exhaust pipe extend rearward from the rear side of the mouth rotary piston engine. .. As a result, it is possible to simplify the routing of the intake pipe and the exhaust pipe, and improve the intake efficiency and the exhaust efficiency.

[001 1] In the present invention, preferably, the vehicle further includes a speed reducing mechanism provided in a transmission path for transmitting the power of the drive motor to the wheels of the vehicle, and the speed reducing mechanism drives the vehicle in the vehicle width direction of the vehicle. It is arranged between the motor and the internal combustion engine.

According to the present invention having such a configuration, since the reduction mechanism is arranged between the drive motor and the internal combustion engine in the vehicle width direction of the vehicle, the output of the drive motor can be easily reduced. It can be connected to the mechanism to decelerate.

[0013] In the present invention, preferably, further, a power converter electrically connected to the drive motor and the generator, respectively, and a first conductor connecting the power converter and the drive motor, A second conductor that connects the power converter and the generator, and the first conductor and the second conductor are both the case of the power converter, the case of the drive motor, or the generator. The case of the power converter is arranged inside the case, and is connected to the case of the drive motor and the case of the generator so as to extend over the internal combustion engine.

According to the present invention configured as described above, the first conductor and the second conductor are arranged inside the case of the power conversion device, the case of the drive motor, or the case of the generator. There is. For this reason, the insulation material to secure the insulation of the first and second conductors extending inside the case should be simpler than the insulation material of the harness that connects each electric device outside the case. be able to. As a result, the cost and weight required for the insulating material can be reduced.

[0015] In the present invention, preferably, the vehicle width direction of the center of the case of the power conversion apparatus, with respect to the center axis of the vehicle extending in the longitudinal direction of the vehicle, the drive motor ^_ evening is arranged 〇 2020/175617 4 卩 (: 171-1? 2020 /008016

It is located on the side where you are.

According to the present invention configured as described above, the center of the case of the power conversion device is located on the side where the drive motor is arranged with respect to the center axis of the vehicle, so The weight balance of the entire device can be further improved.

[0017] In the present invention, preferably, the power converter is an inverter electrically connected to the drive motor for converting direct current to alternating current, and electrically connected to the generator for converting alternating current to direct current. And a converter to

According to the present invention having such a configuration, the case of the power conversion device and the case of the drive mode are combined, and the power conversion device includes an inverter that converts direct current into alternating current, so that the battery It is possible to convert the DC power supplied from the etc. into AC and supply it to the drive motor in a short distance. As a result, the AC drive motor can be operated with a compact structure. Further, according to the present invention configured as described above, the case of the power conversion device and the case of the generator are combined, and the power conversion device includes the converter for converting alternating current to direct current. The AC power generated by the machine can be easily converted into a direct current in the power converter. As a result, it is possible to charge the battery or the like with the output of the AC generator with a compact configuration.

[0019] In the present invention, preferably, the drive motor and the case of the power conversion device arranged above it, and the generator and the case of the power conversion device arranged above them overlap each other in plan view. Therefore, the amount of overlap between the drive motor and the case of the power converter is larger than the amount of overlap between the generator and the case of the power converter.

According to the present invention having such a configuration, the overlapping amount of the case of the drive motor and the power conversion device is configured to be larger than the overlapping amount of the case of the generator and the power conversion device. Therefore, by disposing the case of the power conversion device, the center of gravity of the vehicle drive device can be moved to the drive motor side, and the weight balance of the entire vehicle drive device can be further improved.

[0021] In the present invention, preferably, the drive motor, the internal combustion engine, and the generator are vehicles. 〇 2020/175617 5 (: 171-1?2020/008016

It is housed in the motor room installed at the front of both, and the drive motor, internal combustion engine, and generator are located below the bonnet that covers the motor room.

According to the present invention having such a configuration, since the drive motor, the internal combustion engine, and the generator are arranged below the bonnet, the space below the bonnet can be effectively utilized. You can

[0023] In the present invention, preferably, in a front view, an oil pan is provided at a lower portion of the internal combustion engine, and an output shaft of the internal combustion engine is arranged at an upper side of the vehicle with respect to an output shaft of the drive motor. There is.

According to the present invention thus configured, the output shaft of the internal combustion engine is arranged above the output shaft of the drive motor in an offset manner, whereby the capacity of the oil pan under the internal combustion engine can be appropriately secured. ..

In the present invention, preferably, in plan view, the front end portion of the internal combustion engine is located on the vehicle front side with respect to the front end portion of the drive motor.

According to the present invention configured as described above, at the time of collision of the front portion of the vehicle, an object coming from the front toward the vehicle drive device can be brought into contact with the internal combustion engine before the drive motor. The drive motor can be properly protected by the engine.

[0025] In the present invention, preferably, in plan view, the output shaft of the internal combustion engine is arranged on the front side of the vehicle with respect to the output shaft of the drive motor in an offset manner, and a predetermined auxiliary device associated with the internal combustion engine is provided. It is mounted in front of the drive motor and in front of the internal combustion engine.

According to the present invention configured as described above, the output shaft of the internal combustion engine is arranged in an offset position in front of the output shaft of the drive motor, so that a space is formed in front of the drive motor. An auxiliary device for an internal combustion engine (engine auxiliary device) can be installed in the. As a result, it is possible to appropriately suppress an increase in the size of the vehicle drive device in the vehicle width direction. Also, by arranging the auxiliary equipment of the internal combustion engine in front of the drive motor, the auxiliary equipment can appropriately protect the drive motor in the event of a collision at the front of the vehicle. 〇 2020/175617 6 卩(: 171-1?2020/008016

You can

[0026] In the present invention, preferably, the drive motor, the internal combustion engine and the generator are arranged so that the output shaft of the internal combustion engine, the output shaft of the drive motor and the input shaft of the generator extend in the vehicle width direction. Each is arranged.

According to the present invention having such a configuration, the effects as described above can be obtained when the internal combustion engine, the drive motor, and the generator are horizontally arranged along the vehicle width direction.

Effect of the invention

[0027] According to the vehicle drive device of the present invention, it is possible to suppress the weight balance of the vehicle and the deterioration of the exercise performance while including the drive motor, the internal combustion engine, and the generator.

Brief description of the drawings

[0028] [FIG. 1] A perspective view showing a state in which a vehicle drive device according to an embodiment of the present invention is mounted on a vehicle.

FIG. 2 is a plan view showing a state in which the vehicle drive device according to the embodiment of the present invention is mounted on a vehicle.

FIG. 3 is a cross-sectional view showing an internal structure of a drive motor, a generator, and a power conversion device case in the vehicle drive device according to the embodiment of the present invention.

FIG. 4 is a perspective view of the vehicle drive device according to the exemplary embodiment of the present invention as viewed from diagonally left rear.

FIG. 5 is a side sectional view of the vehicle drive device according to the embodiment of the present invention as viewed from the left side.

FIG. 6 is a plan view showing a state in which a vehicle drive device according to another embodiment of the present invention is mounted on a vehicle.

FIG. 7 is a plan view of a vehicle drive device according to another embodiment of the present invention.

FIG. 8 is a front view of a vehicle drive device according to another embodiment of the present invention.

MODE FOR CARRYING OUT THE INVENTION

[0029] Next, a vehicle drive device according to an embodiment of the present invention will be described with reference to the accompanying drawings. 〇 2020/175 617 7 卩(: 171-1? 2020/008016

To do.

FIG. 1 is a perspective view showing a state in which a vehicle drive device according to an embodiment of the present invention is mounted on a vehicle. FIG. 2 is a plan view showing a state in which the vehicle drive device according to the embodiment of the present invention is mounted on a vehicle. FIG. 3 is a cross-sectional view of the internal structures of the drive motor, the generator, and the power converter device case as seen from the front side of the vehicle in the vehicle drive device according to the embodiment of the present invention. 1 to 3, the intake pipe and the exhaust pipe extending from the internal combustion engine are not shown.

First, the arrangement structure of each component in the vehicle drive device 1 according to the present embodiment will be described with reference to FIGS. 1 to 3.

The vehicle drive device 1 according to the present embodiment includes an internal combustion engine 2, a drive motor 4, a generator 6 that is a generator, a power converter case 8 3, and a reduction gear 10 that is a reduction mechanism that reduces the rotational output of the drive motor 4. Are integrated. As will be described later, in the present embodiment, the power conversion device case 83 includes the inverter 8 and the converter 80 (FIG. 3) as a power conversion device. Further, in the present embodiment, as will be described later, the drive shaft 12 (Fig. 2) of the vehicle is driven by the driving force of the drive motor 4 and is not directly driven by the power generated by the internal combustion engine 2. Absent.

[0031] As shown in Figs. 1 and 2, the vehicle drive device 1 is housed in a motor room 1 1 3 in the front part of the vehicle 1 1, and the motor room 1 1 3 is connected to the vehicle 1 1 3. Covered by 1 13 Further, the drive motor 4, the reduction gear 10 (FIG. 2), the internal combustion engine 2, and the generator 6, which form the vehicle drive device 1, are arranged in this order in the vehicle width direction of the vehicle 11. That is, the vehicle drive device 1 is arranged between the bodyside frames 110 on both sides of the vehicle 11 and below the bonnet 11 11.

Further, the vehicle drive device 1 according to the present embodiment includes an internal combustion engine-dedicated radiator 14 for cooling the internal combustion engine 2, an oil cooler 18 (FIG. 2), and a power conversion device-dedicated radiator 16. There is. The power converter dedicated radiator 16 is configured to cool the power converter, and the oil cooler 18 is driven by the drive motor. 〇 2020/175617 8 卩(: 171-1?2020/008016

— Configured to cool evening 4 and generator 6.

The internal combustion engine 2 is configured to generate power by burning the fuel loaded on the vehicle, and the input shaft (not shown) of the generator 6 is driven by the power generated by the internal combustion engine 2. Power is generated. The electric power generated by the generator 6 is stored as electric energy in the lithium-ion battery 20 (Fig. 2), which is a storage battery. In the present embodiment, a mouth Talibiston engine is used as the internal combustion engine 2.

The drive motor 4 is driven by the electric energy stored in the lithium ion battery 20 and is configured to drive the drive shaft 12 of the vehicle 11. The output shaft of the drive motor 4 is connected to the input shaft of the reduction gear 10 which is a reduction mechanism, and the rotation output of the drive motor 4 drives the drive shaft 12 via the reduction gear 10. Further, the drive motor 4 is configured to regenerate the kinetic energy of the vehicle into electric energy and generate AC power when the vehicle 11 is decelerating. In the present embodiment, an alternating current drive permanent magnet motor is used as the drive motor 4.

The generator 6 is configured to generate AC power by the power generated by the internal combustion engine 2, and its input shaft is rotationally driven by the output shaft of the internal combustion engine 2. The AC power generated by the generator 6 is converted into DC by the comparator 80 in the power converter case 83, and is stored in the lithium ion battery 20.

The reduction gear 10 is a reduction mechanism arranged between the drive motor 4 and the internal combustion engine 2 in the width direction of the vehicle 11, and the power of the drive motor 4 is applied to the wheels of the vehicle 11 (not shown). ) Is provided in the middle of the transmission path. The rotation of the output shaft 4 (Fig. 3) of the drive motor 4 is reduced by the reduction gear 10 and transmitted to the wheels (not shown) via the drive shaft 12. In this embodiment, the reduction gear 10 is used as the reduction mechanism, but a transmission having a transmission function may be used as the reduction mechanism.

[0037] The power converter case 8 3 is a case of the power converter, and the power converter case 〇 2020/175 617 9 卩 (: 171? 2020 /008016

As a converter, 8 inverters and a converter 80 (Fig. 3) are built into the integrated case. The inverter 8 is also configured to convert the DC power supplied from the lithium-ion battery 20 into AC power. The comparator 80 is configured to convert the AC power generated by the generator 6 and the AC power regenerated by the drive motor 4 into DC power. The electric power converted into alternating current by the inverter 8 13 is supplied to the drive motor 4 and the drive motor 4 is driven. The electric power converted into a direct flow by the converter 80 is charged into the lithium-ion battery 20. The power converter case 83 may have a built-in 0 0 -0 0 converter (not shown) for boosting and/or stepping down a DC voltage or a junction box (not shown).

[0038] The power conversion device case 8 ₃ is arranged above the drive motor 4, the reduction gear 10, the internal combustion engine 2, and the generator 6, and is arranged so as to overlap with these in plan view (top view). ing. Further, the power converter case 83, the case of the drive motor 4 and the case of the generator 6 are combined to form an integrated case. Here, in general, the motor, the generator, and the power converter are housed in independent cases, and the cases are electrically connected by a wire harness. On the other hand, in the vehicle drive device 1 of the present embodiment, the drive motor 4, the generator 6, and the power conversion device case 83 are integrated, and a wire harness for connecting them is not provided. .. Therefore, the power converter case 8 3 and the drive motor 4, and the power converter case 8 3 and the generator 6 are connected by a conductor extending inside the integrated case.

[0039] As shown in Fig. 2, the center 0 1 in the vehicle width direction of the power converter case 8 3 extends in the front-rear direction of the vehicle 11 with respect to the central axis 0 2 of the vehicle 11 and the driving mode. — Located on the side where evening 4 is located. Therefore, the amount of overlap between drive motor 4 and power converter case 8 ₃ (shaded area 3 1 in Figure 2) is smaller than the amount of overlap between generator 6 and power converter case 8 ₃ (shaded area 3 2 in Figure 2). Getting bigger 〇 2020/175617 10 卩(: 171-1?2020/008016

ing. That is, in the vehicle drive device 1 of the present embodiment, the ratio of the internal combustion engine 2 to the total weight is large. Therefore, the position of the center of gravity of the entire vehicle drive device 1 tends to be biased toward the side where the internal combustion engine 2 is arranged with respect to the central axis 0 2 of the vehicle 11. In this embodiment, the center of the power converter case 8 3

By locating the drive motor 4 on the side where the drive motor 4 is arranged with respect to the central axis 0 2 of the vehicle 11, deviation of the weight balance of the vehicle drive device 1 is suppressed.

[0040] As shown in Fig. 2, the internal combustion engine-dedicated radiator 14 is a flat plate-shaped heat exchanger arranged on the front side of the vehicle with respect to the internal combustion engine 2, and the traveling wind generates heat when the vehicle travels. It is configured to hit the plate surface of the exchanger and dissipate the heat of the cooling liquid to the atmosphere. The internal combustion engine 2 and the internal combustion engine-dedicated radiator 14 are connected by a pipe for cooling liquid (not shown) so that the cooling liquid circulates between the internal combustion engine-dedicated radiator 14 and the internal combustion engine 2. Is configured. That is, the cooling liquid that has cooled the internal combustion engine 2 and has risen in temperature is sent to the internal combustion engine-dedicated radiator 14 where the heat is dissipated to lower the temperature and then returned to the internal combustion engine 2.

[0041] The power conversion device-dedicated radiator 16 is an elongated flat plate heat exchanger that is arranged on the front side of the vehicle with respect to the internal combustion engine-dedicated radiator 14 and the traveling wind of the vehicle hits the plate surface of the heat exchanger. It is configured to dissipate the heat of the cooling liquid to the atmosphere. The power converter case 8 ₃ and the power converter dedicated radiator 16 are connected by an inflow pipe 1 63 and an outflow pipe 1 613, and are configured to circulate a cooling liquid. That is, the cooling liquid that has cooled the power converter in the power converter case 8 ₃ and has risen in temperature flows into the power converter dedicated radiator 16 through the inflow pipe 1 63. The inflowing cooling liquid dissipates the heat in the power converter dedicated radiator 16 and the cooled cooling liquid is returned to the power converter case 8 3 via the outlet pipe 16 and is again used for power conversion. Cool the device.

[0042] The oil cooler 18 is an elongated flat plate heat exchanger arranged below the radiator 14 for the internal combustion engine, and the traveling wind of the vehicle hits the plate surface of the heat exchanger to cool the cooling liquid. It is configured to dissipate heat to the atmosphere. Oil cooler 18 and drive 〇 2020/175 617 1 1 卩 (：171? 2020 /008016

The motor 4, the oil cooler 18 and the generator 6 are connected by piping (not shown). Further, the generator 6 and the drive motor 4 are connected by a transfer pipe (not shown). That is, the cooling liquid that has cooled the drive motor 4 and has increased in temperature flows into the oil cooler 18, and the cooling liquid that has flowed in dissipates heat in the oil cooler 18 and the cooling liquid that has decreased in temperature flows to the generator 6. Returned and generator 6 cooled. The cooling liquid that has cooled the generator 6 is sent to the drive motor 4 via the transfer pipe, and the drive motor 4 is cooled.

[0043] The power converter in the power converter case 8 ₃ is a radiator dedicated to the power converter.

The water-based cooling liquid is cooled by 16 and circulates between the power converter case 8 3 and the power converter dedicated radiator 16 to cool the power converter. In other words, the hot water whose temperature has risen by cooling the power converter is sent to the power converter dedicated radiator 16 to be cooled. Further, the cold water cooled by the power converter dedicated radiator 16 and lowered in temperature is returned to the power converter case 8 ₃ to cool the internal power converter.

Next, with reference to FIG. 3, a connection structure of the drive motor 4, the generator 6, and the power converter device case 8 ₃ in the vehicle drive device 1 of the present embodiment will be described.

FIG. 3 is a sectional view showing the internal structures of the drive motor 4, the generator 6, and the power converter case 83.

[0045] As shown in Fig. 3, the drive motor 4 includes a motor case 43 which is a case of the drive motor 4, a port 413 housed in the motor case 43, and a stay output shaft 4¢1. And,. The motor 413 is coupled to the output shaft 4¢1 oriented in the horizontal direction, and is rotatably supported by the motor case 43 about an axis that is horizontal. The stator 40 is fixed to the motor case 43, and is configured to rotate and drive the rotor 413 by causing an alternating current to flow through the coil forming the station 40. On the other hand, during deceleration, the output shaft 4 is rotationally driven based on the vehicle's motion energy. As a result, the rotor 4 and the rotor 4 are driven to rotate together with the output shaft 4, so that an induced current is generated in the stator 40. 〇 2020/175 617 12 卩 (：171? 2020 /008016

However, the motion energy of the vehicle is regenerated as electric energy.

[0046] The generator 6 is a case of the generator 6, which is a generator case 6

3, a generator 61 0 accommodated in the generator case 63, a stator 60, and an input shaft 6¢1. The rotor 6 is coupled to a horizontally oriented input shaft 6 1 and is supported so as to be rotatable about a horizontal axis with respect to the generator case 63. The stator 60 is fixed to the generator case 63, and when the rotor 6 is driven to rotate by the driving force of the internal combustion engine 2, an induction current flows through the coils that make up the stator 60 so that AC power is generated. It is composed of

[0047] The power converter case 83 contains an inverter 8 and a converter 80, which are integrated as an electric drive system unit. These inverters 8 and comparators

Is a switching device (insulated gate bipolar transistor), a 1/1/3 device (1/1/3 field effect transistor), and a rectifying diode (not shown). It is composed of a circuit board including power semiconductor elements such as. Depending on the configuration of the vehicle's electric drive system, there may be a DC voltage converter inside the power converter case 83.

It may be equipped with a comparator.

[0048] Further, since the power semiconductor element on the circuit board generates heat as it operates, a cooling liquid chamber 8 1 is provided in the power converter case 8 3 to cool it. An inflow pipe 1 63 and an outflow pipe 1 6 13 are connected to the cooling liquid chamber 8¢1, and the oil cooler 1 is connected between the cooling liquid chamber 8 and the power converter dedicated radiator 16 (Fig. 1). A cooling liquid different from the one circulating in 8 is being circulated. In this way, by circulating the cooling liquid in the cooling liquid chamber 8¢1, the cooling liquid chamber 8 acts as a water jacket, and the inverter 8 and the converter 80 in the power conversion device case 8 3 are cooled. .. Further, the wall surface in the cooling liquid chamber 8 is formed flat so that the cooling liquid can efficiently flow into the cooling liquid chamber 8.

[0049] Further, one end of the bottom surface of the power converter case 8 3 is connected to the motor of the drive motor 4. 〇 2020/175 617 13 卩 (：171? 2020 /008016

It is fastened and fixed to the upper end of the case 43 and is integrated. Further, the other end of the bottom surface of the power converter case 8 ₃ is fastened and connected to the upper end of the generator case 6 3 of the generator 6 while straddling over the reduction gear 10 and the internal combustion engine 2. Has been done. As described above, in the present embodiment, the power converter case 8 3, the motor case 43, and the generator case 63, which are separately configured, are fastened together to form an integrated case. However, some or all of these cases may be integrally molded.

[0050] Here, as described above, the electric power supplied from the lithium-ion battery 20 is supplied to the drive motor 4 via the inverter 813 in the power converter case 83. For this reason, a plurality of bus bars 24, which are the first conductors for connecting the inverter 813 and the drive motor 4, extend inside the integrated motor case 43 and power converter case 83. There is. Further, the AC power regenerated by the drive motor 4 is charged into the lithium ion battery 20 via the converter 80. For this reason, the integrated motor case 43 and bus bar 24 extending inside the power converter case 83 are also used when supplying the AC power regenerated by the drive motor 4 to the converter 80. It As a result, a harness or the like that passes the outside of the motor case 4 3 and the power conversion device case 8 3 for exchanging electric power between the drive motor 4 and the power conversion device is not provided.

[0051] Similarly, the AC power generated by the generator 6 is charged in the lithium ion battery 20 through the comparator 80 in the power converter case 83. For this reason, multiple bus bars 26 (only one shown), which is the second conductor for connecting the generator 6 and the comparator 80, are also integrated in the generator case 63 and power converter case 83. Extends inside. As a result, a harness or the like that passes outside the generator case 6 3 and the power conversion device case 8 3 for exchanging electric power between the generator 6 and the power conversion device (comparator 80) is not provided. ..

Next, referring to FIGS. 4 and 5, connecting the intake pipe and the exhaust pipe to the internal combustion engine. 〇 2020/175 617 14 卩 (: 171? 2020 /008016

Explain the continuation.

FIG. 4 is a perspective view of the vehicle drive device 1 according to the embodiment of the present invention as seen from the left rear side. FIG. 5 is a side sectional view of the vehicle drive device 1 according to the embodiment of the present invention as viewed from the left side.

As shown in FIGS. 4 and 5, the internal combustion engine 2 provided in the vehicle drive device 1 has an intake pipe 2 ₃ and an exhaust pipe 2 connected to the rear side surface of the vehicle 11 in the front-rear direction. Has been continued.

Intake pipe 2 _3, the rear of the engine 2 (the vehicle 1 1 of the rear side) from the upper side surface, once, after extending to the rear side of the vehicle 1 1, an internal combustion engine passes over the internal combustion engine 2 and Jiwenereta 6 It extends to the front side of 2. Further, behind the internal combustion engine 2, a drive shaft 12 extends so as to traverse the vehicle 11, and the intake pipe 23 is connected to the internal combustion engine 2 above the drive shaft 1 2. .. In addition, the distal end portion of the intake pipe 2 ₃ has an air cleaner 2 8 is provided and is configured to remove dust in the air sucked into the internal combustion engine 2.

[0054] On the other hand, the exhaust pipe 2 extends from the rear side of the internal combustion engine 2 (rear side of the vehicle 11) to the rear side of the vehicle 11 and extends toward the rear side of the vehicle 11 and is provided at the center of the lower portion of the vehicle 11. Has been inserted inside. Further, a catalyst (catalyst converter) 30 is provided in the middle of the exhaust pipe 2 so as to remove harmful components in the exhaust gas. Further, the exhaust pipe 213 is connected to the internal combustion engine 2 below the drive shaft 12 on the rear side of the internal combustion engine 2, and once extends downward to bypass the drive shaft 1 2, It extends upward and is connected to the catalyzer 30. Therefore, as shown in FIG. 5, drive sheet Yafuto 1 2, through an intake pipe 2 ₃ extending from the internal combustion engine 2 to the vehicle 1 1 of the rear side between the exhaust pipe 2 spoon, a width direction of the vehicle 1 1 Extends to. As a result, the internal combustion engine 2, its intake pipe 23, and its exhaust pipe 213 can be efficiently housed in the narrow motor room 1 13 below the bonnet 11 13.

According to the vehicle drive device 1 of the embodiment of the present invention, the drive motor 4, the internal combustion engine 2, and the generator 6 are arranged in this order in the vehicle width direction of the vehicle 11. 〇 2020/175 617 15 卩 (：171? 2020 /008016

(Fig. 2). As a result, since the relatively heavy internal combustion engine 2 is located between the drive motor 4 and the generator 6, the left and right weight balances of the vehicle 11 are less likely to be lost, and it is possible to prevent the weight balance from being deteriorated. .. Further, since the internal combustion engine 2 is located between the drive motor 4 and the generator 6, the internal combustion engine 2 is located relatively inward in the vehicle width direction, so that the yaw axis of the vehicle 11 and the throttle axis are located. It is possible to reduce the moment of inertia of the surroundings and suppress deterioration of the movement performance.

Further, according to the vehicle drive device 1 of the present embodiment, since the internal rotary engine is adopted as the internal combustion engine 2, even when the vehicle drive device 1 is arranged between the drive motor 4 and the generator 6, the motor room 1 1 Less likely to get in the way of 3. Therefore, even when the internal combustion engine 2 is arranged between the drive motor 4 and the generator 6, the space in the motor room 1 18 can be effectively used.

[0057] Furthermore, according to the vehicle driving system 1 of the present embodiment employs a rotor Li piston engine as an internal combustion engine 2, an intake pipe 2 ₃ and the exhaust pipe 2 spoon is, to the rear from the back of the mouth Taribisu ton engine It extends towards (Fig. 4). This can simplify the routing of the intake pipe 23 and the exhaust pipe 2 and improve the intake efficiency and the exhaust efficiency.

Further, according to the vehicle drive device 1 of the present embodiment, since the reduction gear 10 is arranged between the drive motor 4 and the internal combustion engine 2 in the vehicle width direction of the vehicle 11, it is possible to drive the vehicle. The output of motor 4 can be easily connected to reduction gear 10 to decelerate.

Furthermore, according to the vehicle drive device 1 of the present embodiment, the bus bar 24 is arranged inside the power conversion device case 8 8 and the drive motor 4, and the bus bar 26 is connected to the power conversion device case. It is located inside the case of 8 3 and generator 6 (Fig. 3). Therefore, the insulating material for ensuring the insulating property of each bus bar extending inside the case can be simpler than the insulating material for harness connecting the electric devices outside the case. As a result, the cost and weight required for the insulating material can be reduced. 〇 2020/175617 16 卩(: 171-1?2020/008016

Further, according to the vehicle drive device 1 of the present embodiment, the center 0 1 of the power converter case 8 ₃ is located on the side where the drive motor 4 is arranged with respect to the central axis 0 2 of the vehicle 11 1. Since it is located at (Fig. 2), the weight balance of the entire vehicle drive system 1 can be further improved.

Further, according to the vehicle drive device 1 of the present embodiment, since the power converter device case 8 ₃ and the drive motor 4 case are combined and the inverter 8 s is included as the power converter device, the lithium ion battery It is possible to convert the DC power supplied from 20 etc. into AC and supply it to the drive motor 4 in a short distance. As a result, the AC drive motor 4 can be operated with a compact configuration. Further, since the power converter case 8 3 and the generator 6 case are combined and the converter 80 is included as a power converter, the AC power generated by the generator 6 can be easily converted to DC. can do. As a result, with a compact configuration, the output of the AC generator 6 can be charged into a battery or the like.

Further, according to the vehicle drive device 1 of the present embodiment, the overlapping amount 3 1 between the drive motor 4 and the power conversion device case 8 3 is larger than the overlapping amount 3 2 between the generator 6 and the power conversion device case 8 3. Is also large. Therefore, by disposing the power conversion device case 83, the center of gravity of the vehicle drive device 1 can be moved to the drive motor 4 side, and the weight balance of the entire vehicle drive device 1 can be further improved. You can

Further, according to the vehicle drive device 1 of the present embodiment, the drive motor 4, the internal combustion engine

2 and the generator 6 are arranged below the bonnet 1 113, the space below the bonnet 1 113 can be effectively used.

Although the embodiments of the present invention have been described above, various modifications can be made to the above-described embodiments. That is, in the above-described embodiment, the internal combustion engine drives the generator, and the drive shaft is not directly driven by the internal combustion engine, but the drive shaft is driven by the power of the internal combustion engine. The present invention can also be applied. Also, the battery is used exclusively as an external power source. 〇 2020/175617 17 卩(: 171-1?2020/008016

Therefore, the present invention can be applied to a vehicle drive device that is charged. Further, in the above-described embodiment, the mouth-tear piston engine is adopted as the internal combustion engine, but various types of engines can be adopted as the internal combustion engine. For example, a horizontally opposed engine can be adopted as the internal combustion engine. This horizontally-opposed engine has a low overall height, similar to the mouth-to-piston engine, and even when a case such as a power converter is placed above the internal combustion engine, the space factor in the motor room is not impaired. , Is preferred.

[0065] Next, a vehicle drive unit 13 according to another embodiment of the present invention will be described with reference to Figs. 6 to 8. FIG. 6 is a plan view (top view) showing a state in which a vehicle drive device 13 according to another embodiment of the present invention is mounted on a vehicle. FIG. 7 is a plan view (top view) of a vehicle drive device 18 according to another embodiment of the present invention. In FIG. 7, only the main parts of the components shown in FIG. 6 are illustrated (for example, the illustration of the inverter 8 sack and the air cleaner 28 is omitted). FIG. 8 is a front view of a vehicle drive device 13 according to another embodiment of the present invention. In FIG. 8 as well, only the main parts of the components shown in FIG. 6 are illustrated (unlike FIG. 7, the inverter 8 cradle, the air cleaner 28, etc. are illustrated).

As shown in FIG. 6, a vehicle drive device 13 according to another embodiment of the present invention also has a drive motor 4, a reduction gear 10 and an internal combustion engine, similar to the vehicle drive device 1 according to the above-described embodiment. 2. The generator 6 is arranged in this order in the vehicle width direction. However, the vehicle drive unit 13 does not include the power converter case 8 ₃ like the vehicle drive unit 1, but the inverter 8 units and the converter 80 are separately arranged. Specifically, in the vehicle drive system 13, the inverter 8 is arranged above the drive motor 4, and the converter 80 is arranged above the internal combustion engine 2. In addition, in the vehicle drive unit 13, the junction box 8 ㊀ that houses terminals for connecting, branching, and relaying electric wires such as the inverter 8 and the converter 80 and the lithium-ion battery 20 is connected to the inverter 8 It is located above 13 (see Figure 8). In addition, as shown by the broken line in Fig. 6, generator 6, comparator 80, junction box 86, lithium 〇 2020/175 617 18 卩 (：171? 2020 /008016

The Muion battery 20 is electrically connected in this order. As the reduction gear 10, a trans-ask including a reduction mechanism and a differential mechanism may be used.

Further, in a vehicle drive device 13 according to another embodiment, as shown in FIG. 8, an oil pan 2 is provided below the internal combustion engine body 20 in a front view, and an output shaft of the internal combustion engine 2 is provided. 2 X (see dashed line in Figure 8) is the drive motor

It is located on the upper side of the vehicle with respect to (see the broken line in Fig. 8). By disposing the output shaft 2 X of the internal combustion engine 2 above the output shaft 4 of the drive motor 4 in the vehicle in this way, the capacity of the oil pan 2 ¢ 1 below the internal combustion engine body 20 can be properly secured. can do. Normally, the output shaft 2 X of the internal combustion engine 2 is arranged substantially at the center position of the internal combustion engine 2 in the vertical direction of the vehicle (the center position between the upper end and the lower end of the internal combustion engine 2) and the output shaft of the drive motor 4 is arranged. 4¢1 is arranged substantially at the center position of the drive motor 4 in the vertical direction of the vehicle (the center position between the upper end and the lower end of the drive motor 4). Therefore, when the output shaft 2 X of the internal combustion engine 2 is placed above the output shaft 4 of the drive motor 4 by offset, the center position of the internal combustion engine 2 in the vehicle up-down direction is in the vehicle up-down direction. It will be located above the center position.

On the other hand, since the output shaft 2 X of the internal combustion engine 2 and the input shaft 6 of the generator 6 are connected, these output shaft 2 X and input shaft 6 are located almost on the same axis (Figs. 7 and 7). (See the dashed line in 8.)

Further, as shown in FIG. 7, the front end portion of the internal combustion engine 2 is located on the vehicle front side with respect to the front end portion of the drive motor 4 in plan view. As a result, in the event of a collision at the front of the vehicle, an object coming from the front toward the vehicle drive device 13 can be applied to the internal combustion engine 2 before the drive mode 4, and the internal combustion engine 2 drives the motor 4 Can be properly protected.

Further, as shown in FIG. 7, in plan view, the output shaft 2 X of the internal combustion engine 2 (see FIG.

7) (refer to the broken line in 7) is arranged on the front side of the vehicle with respect to the output shaft 4 of the drive motor 4 (refer to the broken line in FIG. 7). 〇 2020/175 617 19 卩 (：171? 2020 /008016

A heat exchanger 26 is installed in front of the drive motor 4 and the reduction gear 10 and in front of the internal combustion engine body 20 (see also FIG. 8). Normally, the output shaft 2 X of the internal combustion engine 2 is arranged at substantially the center position of the internal combustion engine 2 in the vehicle front-rear direction (the center position between the right end and the left end of the internal combustion engine 2) and the output shaft 4 ¢ 1 is arranged at a substantially center position of the drive motor 4 in the vehicle front-rear direction (a center position between the right end and the left end of the drive motor 4). Therefore, when the output shaft 2 X of the internal combustion engine 2 is offset in front of the output shaft 4 ¢1 of the drive motor 4, the center position of the internal combustion engine 2 in the vehicle front-rear direction is the vehicle front-rear direction. It will be located in front of the center position of.

[0070] The heat exchanger 26 includes an oil cooler for cooling the oil, a water pump for supplying water for cooling the oil to the oil cooler, and an oil filter for removing impurities in the oil. Have (these illustrations are omitted). The water pump is driven by the output shaft 2 X of the internal combustion engine 2, but if the shaft of the water pump is arranged on the same axis as the output shaft 2 X, the dimension in the vehicle width direction becomes large. Displaced from the output shaft 2 X (in this case, the power is transmitted from the output shaft 2 X via the chain to the water pump shaft). Therefore, the heat exchanger ₂₆ including the water pump is provided on the inner side in the vehicle width direction with respect to the internal combustion engine main body 20, so that the heat exchanger 26 is provided in front of the drive motor 4 and the reduction gear 10. Will be located.

[0071] After all, by arranging the output shaft 2X of the internal combustion engine 2 in front of the vehicle with respect to the output shaft 4 of the drive motor 4, a space is provided in front of the drive motor 4 and the reduction gear 10. In another embodiment, such a space is used to arrange the heat exchanger 26 as described above (specifically, the heat exchange in front view). Unit 2 ₆ is arranged so as to overlap the reduction gear 10). As a result, it is possible to appropriately suppress an increase in the size of the vehicle drive device 18 in the vehicle width direction. In addition, by disposing the heat exchanger 26 in front of the drive motor 4 and the deceleration gear 10, an object coming from the front toward the vehicle drive device 13 is driven by the drive motor when the front part of the vehicle collides. From 4 and reduction gear 10 〇 2020/175 617 20 卩 (：171? 2020 /008016

Can be applied to the heat exchanger 26 first, and the drive motor 4 and the reduction gear 10 can be appropriately protected by the heat exchanger 26.

[0072] Note that the heat exchanger ₂₆ described above is not limited to being used as an auxiliary device of the internal combustion engine 2. The auxiliary device of the internal combustion engine 2 is, for example, a device necessary for operating the internal combustion engine 2, and in other examples, a generator (alternator) driven by the power generated by the internal combustion engine 2 or an injection pump is used. Can be applied

Further, in the vehicle drive device 13 according to another embodiment, as shown in FIGS. 6 and 7, the converter 80 is arranged so as to overlap the upper surface of the internal combustion engine 2 in plan view. Has been done. Specifically, the outer end of the comparator 80 in the vehicle width direction is located inside the outer end of the internal combustion engine 2 in the vehicle width direction, and the front end of the converter 80 is more than the front end of the internal combustion engine 2. It is located on the rear side of the vehicle, so that the entire converter 80 overlaps the internal combustion engine 2 in plan view (Fig. 7). By arranging the comparator 80 in this way, it is possible to prevent the body side frame 110, etc. from being deformed and interfering with the converter 80 when the front part of the vehicle collides. Specifically, in the event of a collision at the front of the vehicle, the deformed bodyside frame 110 can be applied to the internal combustion engine 2 prior to the comparator 80, and the internal combustion engine 2 can appropriately convert the converter 80. Can be protected.

Further, as shown in FIGS. 6 and 8, the inverter 8 and the junction box 86 are arranged so as to overlap with the upper surface of the drive motor 4 in plan view. Specifically, the inverter 8 and the junction box 8 ㊀ are positioned above the drive motor 4 so that the outer ends of the drive motor 4 in the vehicle width direction are located inside the outer end of the drive motor 4 in the vehicle width direction. It is arranged. This allows the drive motor 4 to appropriately protect the inverter 8 and the junction box 86 in the event of a collision at the front of the vehicle.

[0075] As shown in Figs. 6 and 8, the air cleaner 28 above the generator 6 is arranged on the outside in the vehicle width direction with respect to the converter 80. 〇 2020/175617 21 卩(: 171-1?2020/008016

ing. As a result, it is possible to properly prevent the damaged air cleaner 28 from interfering with the converter 80 when the front part of the vehicle collides. In addition, the intake pipe 2 ₃ which connects the air cleaner 2 8 and the internal combustion engine 2 has been placed at a distance from the converter 8_Rei. Specifically, the intake pipe 23 should not overlap with the converter 80 in plan view (Fig. 6), and the intake pipe 23 should not overlap with the converter 80 in front view (Fig. 8). , The intake pipe 23 is arranged for the comparator 80. As a result, it is possible to appropriately prevent the damaged suction pipe 23 from interfering with the converter 80 when the front part of the vehicle collides.

Explanation of symbols

[0076] 1 Vehicle drive device

1 3 Vehicle drive

2 Internal combustion engine

2 3 Intake pipe

2 匕 Exhaust pipe

20 Internal combustion engine body

20 oil pan

2 6 Heat exchanger (auxiliary equipment)

2 X output axis

4 drive motor

4 ^ motor case

4 Tsubasa overnight

40 Stator

40 Output shaft

6 generator

6^ generator case

6 Tsubasa overnight

60 Stator

6 ¢1 Input shaft 〇 2020/175 617 22 卩 (：171? 2020 /008016

83 Power converter case

8 inch inverter (power converter)

8 ○ Converter (electric power converter)

80 1 Coolant chamber

86 junction box

1 0 Reduction gear (reduction mechanism)

1 1 vehicle

1 1 3 Motor room

1 1 匕 Bonnet

1 1 〇 Bodyside frame

1 2 drive shaft

1 4 Radiator for internal combustion engine

1 6 Power converter dedicated radiator

1 6 ^ Inflow pipe

1 6 spillway pipe

1 8 oil cooler

20 lithium-ion battery

24 bus bar (first conductor)

26 bus bar (second conductor)

28 Fair Cleaner

30 Catalyzer

Claims

\¥02020/175617 23 卩(: 17 2020/008016 Claims

[Claim 1] A vehicle drive device for driving a vehicle by the power of a motor,

A drive motor driven by electric power,

An internal combustion engine that generates power by fuel,

A generator driven by this internal combustion engine,

Have

The drive motor, the internal combustion engine, and the generator are arranged in the vehicle width direction of the vehicle in the order of the drive motor, the internal combustion engine, and the generator.

2. The vehicle drive device according to claim 1, wherein the internal combustion engine is a rotary piston engine or a horizontally opposed engine.

[Claim 3] The internal combustion engine is a mouth-tally-piston engine, and the intake pipe and the exhaust pipe of the mouth-tally-piston engine are connected from the rear side of the mouth-tari-piston engine in the front-rear direction of the vehicle. The vehicle drive device according to claim 2, which extends toward the rear side of the vehicle.

[Claim 4] Furthermore, a reduction mechanism is provided in a transmission path that transmits the power of the drive motor to the wheels of the vehicle, and the reduction mechanism is provided with the drive motor in the vehicle width direction of the vehicle. The vehicle drive device according to any one of claims 1 to 3, which is arranged between the internal combustion engines.

[Claim 5] Further, a power converter electrically connected to the drive motor and the generator, a first conductor connecting the power converter and the drive motor, and the power converter And a second conductor connecting the generator, and the first conductor and the second conductor are both the case of the power conversion device, the case of the drive motor, or The case of the power converter is arranged inside the case of the generator, and the case of the power converter is coupled to the case of the drive motor and the case of the generator so as to extend over the internal combustion engine. The vehicle drive device according to any one of 4 above. 〇 2020/175 617 24 卩 (：171? 2020 /008016

6. The center of the case of the power conversion device in the vehicle width direction is located on the side where the drive motor is arranged with respect to the center axis of the vehicle extending in the front-rear direction of the vehicle. The vehicle drive device according to item 5.

[Claim 7] The power conversion device includes: an inverter electrically connected to the drive motor for converting direct current to alternating current; and a converter electrically connected to the generator for converting alternating current to direct current. The vehicle drive device according to claim 5 or 6, including.

[Claim 8] The case of the drive motor and the power conversion device arranged above the drive motor

, And the case of the power generator and the case of the power converter arranged above the generator overlap each other in plan view, and the amount of overlap between the drive motor and the case of the power converter is equal to that of the generator. The vehicle drive device according to any one of claims 5 to 7, wherein the vehicle drive device is configured to be larger than an overlapping amount of cases of the power conversion device.

[Claim 9] The drive motor, the internal combustion engine, and the generator are housed in a motor room provided in a front portion of the vehicle, and the drive motor, the internal combustion engine, and the generator are The vehicle drive device according to any one of claims 1 to 8, wherein the vehicle drive device is arranged below a bonnet that covers the motor room.

[Claim 10] In a front view, an oil pan is provided in a lower portion of the internal combustion engine, and an output shaft of the internal combustion engine is arranged at an upper side of the vehicle with respect to an output shaft of the drive motor. Item 10. The vehicle drive device according to any one of items 1 to 9.

[Claim 11] The vehicle drive according to any one of claims 1 to 10, wherein a front end portion of the internal combustion engine is located on a vehicle front side with respect to a front end portion of the drive motor in a plan view. apparatus.

[Claim 12] When seen in a plan view, the output shaft of the internal combustion engine is arranged on the vehicle front side with respect to the output shaft of the drive motor, and a predetermined auxiliary device related to the internal combustion engine is provided in the drive motor. In front of and in front of the internal combustion engine. 〇 2020/175 617 25 卩 (：171? 2020 /008016

The vehicle drive device according to any one of claims 1 to 11, which is installed.

13. The output shaft of the internal combustion engine, the output shaft of the drive motor, and the input shaft of the generator each extend along the vehicle width direction so that the drive motor, the internal combustion engine, and the generator The vehicle drive device according to any one of claims 1 to 12, each of which is arranged.