WO2022210486A1 - 車両用駆動装置 - Google Patents
車両用駆動装置 Download PDFInfo
- Publication number
- WO2022210486A1 WO2022210486A1 PCT/JP2022/014869 JP2022014869W WO2022210486A1 WO 2022210486 A1 WO2022210486 A1 WO 2022210486A1 JP 2022014869 W JP2022014869 W JP 2022014869W WO 2022210486 A1 WO2022210486 A1 WO 2022210486A1
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- WIPO (PCT)
- Prior art keywords
- gear
- axial direction
- oil
- driving force
- peripheral
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims description 137
- 230000007246 mechanism Effects 0.000 claims description 98
- 230000005540 biological transmission Effects 0.000 claims description 91
- 239000003921 oil Substances 0.000 description 293
- 238000003860 storage Methods 0.000 description 68
- 238000005192 partition Methods 0.000 description 53
- 238000001816 cooling Methods 0.000 description 22
- 230000004308 accommodation Effects 0.000 description 21
- 239000010687 lubricating oil Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
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- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
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- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0426—Means for guiding lubricant into an axial channel of a shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0441—Arrangements of pumps
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
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- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2304/00—Optimising design; Manufacturing; Testing
- B60Y2304/01—Minimizing space with more compact designs or arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2304/00—Optimising design; Manufacturing; Testing
- B60Y2304/07—Facilitating assembling or mounting
- B60Y2304/072—Facilitating assembling or mounting by preassembled subunits
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- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/03—Lubrication
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
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- B60Y2306/05—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/61—Arrangements of controllers for electric machines, e.g. inverters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2410/00—Constructional features of vehicle sub-units
- B60Y2410/10—Housings
Definitions
- the present invention comprises a first driving force source, a second driving force source, a power transmission mechanism, an oil pump that supplies oil to the first driving force source and the second driving force source, and an oil cooler that cools the oil. and a vehicle drive system.
- Patent Document 1 An example of a vehicle drive device including a first driving force source, a second driving force source, and a power transmission mechanism is disclosed in Japanese Patent Application Laid-Open No. 2018-155327 (Patent Document 1).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2018-155327
- a vehicle driving device (1) as a vehicle driving device in Patent Document 1 includes electric motors (2L, 2R) as first driving force sources and second driving force sources, and reduction gears (3L, 2R) as power transmission mechanisms. 3R) and The speed reducer (3L, 3R) is housed in a speed reducer housing (9), and lubricating oil is enclosed in the speed reducer housing (9) as described in paragraph 0047 of Patent Document 1.
- oil is supplied to the first driving force source and the second driving force source in order to supply oil to the first driving force source and the second driving force source to cool them. and an oil cooler for cooling the oil may be provided in the vehicle drive system. In this case, depending on the arrangement position of the oil cooler, the size of the vehicle driving device may increase, and the mountability of the vehicle driving device on the vehicle may deteriorate.
- a vehicle drive system includes a first driving force source, a second driving force source, a first output member drivingly connected to a first wheel, and a second output member drivingly connected to a second wheel.
- a power transmission mechanism ; an oil pump that supplies oil to the first driving force source and the second driving force source; and an oil cooler that cools the oil, wherein the The power transmission mechanism includes a first transmission system that transmits torque of the first driving force source to at least the first output member, and a second transmission system that transmits torque of the second driving force source to at least the second output member.
- first driving force source and the second driving force source are arranged on a first axis, and the first output member and the second output member are arranged on a different axis from the first axis;
- the second axis A first peripheral gear is the radially outermost gear with respect to , and among the gears arranged on the second shaft and constituting the second transmission system, the radially outermost gear is arranged
- the first and second peripheral gears are spaced apart from each other in the axial direction, and the oil cooler includes the first and second peripheral gears. and in the axial direction so as to overlap with at least one of the first outer peripheral gear and the second outer peripheral gear when viewed in the axial direction along the axial direction.
- the first peripheral gear which is the radially outermost gear of the gears that are arranged on the second shaft and constitute the first transmission system
- the first peripheral gear that is arranged on the second shaft
- the second outer peripheral gear which is the radially outermost gear of the gears constituting the second transmission system
- the first outer peripheral gear and the second outer peripheral gear overlaps with at least one of the first outer peripheral gear and the second outer peripheral gear when viewed in the axial direction tends to be a dead space.
- the oil cooler can be arranged using the area that tends to become a dead space, it is possible to suppress an increase in the size of the vehicle drive device due to the arrangement of the oil cooler. That is, according to this configuration, the oil cooler can be arranged while suppressing an increase in the size of the vehicle drive device.
- 1 is a skeleton diagram of a vehicle drive system according to an embodiment; Sectional view of the vehicle drive system according to the embodiment 1 is a plan view of part of a vehicle drive system according to an embodiment; 1 is a perspective view of part of a vehicle drive system according to an embodiment; 1 is a side view of part of a vehicle drive system according to an embodiment; 1 is a perspective view of a case of a vehicle drive system according to an embodiment; 1 is a perspective view of a case of a vehicle drive system according to an embodiment; 1 is a front view of a vehicle drive system according to an embodiment; Skeleton diagram of a vehicle drive system according to another embodiment
- the first rotating electric machine 1A corresponds to the "first driving force source”
- the second rotating electric machine 1B corresponds to the "second driving force source”
- the first input gear 4A corresponds to the "first gear”.
- the second input gear 4B corresponds to the "second gear”
- the first differential input gear 7A corresponds to the "first outer peripheral gear”
- the second differential input gear 7B corresponds to the "second outer peripheral gear ”
- the second oil passage 24B corresponds to “the oil passage connecting the oil pump and the oil cooler”
- the third oil passage 24C corresponds to “the oil cooler and both the first driving force source and the second driving force source
- the first counter input gear 51A corresponds to the "third gear”
- the second counter input gear 51B corresponds to the "fifth gear”
- the first counter output gear 52A corresponds to the "
- the second counter output gear 52B corresponds to the "sixth gear”.
- rotary electric machine is used as a concept including motors (electric motors), generators (generators), and motors/generators that function as both motors and generators as necessary.
- overlapping in a particular direction view means that when a virtual straight line parallel to the viewing direction is moved in each direction orthogonal to the virtual straight line, the virtual straight line means that there exists at least a part of a region where the crosses both of the two members.
- the axial arrangement areas overlap means that the axial arrangement area of one member includes at least the axial arrangement area of the other member. It means that part is included.
- driving connection refers to a state in which two rotating elements are connected so as to be able to transmit a driving force, and the two rotating elements are connected so as to rotate together. It includes a state in which two rotating elements are connected so as to be able to transmit driving force via one or more transmission members.
- Such transmission members include various members (for example, shafts, gear mechanisms, belts, chains, etc.) that transmit rotation at the same speed or at different speeds.
- the transmission member may include an engagement device (for example, a friction engagement device, a mesh type engagement device, etc.) that selectively transmits rotation and driving force.
- driving connection it means a state in which three or more rotating elements of the differential gear mechanism are driven and connected without intervening other rotating elements. shall point to
- the vehicle driving device 100 includes a first rotating electrical machine 1A, a second rotating electrical machine 1B, a first output member 2A drivingly connected to a first wheel W1, and a second wheel W2.
- a second output member 2B and a power transmission mechanism T are provided.
- the vehicle drive device 100 further includes a case 3 that houses the first rotating electric machine 1A, the second rotating electric machine 1B, the first output member 2A, the second output member 2B, and the power transmission mechanism T. I have it.
- part of the first output member 2A and part of the second output member 2B are exposed to the outside of the case 3.
- FIG. 1A the vehicle driving device 100
- the vehicle drive device 100 further includes a case 3 that houses the first rotating electric machine 1A, the second rotating electric machine 1B, the first output member 2A, the second output member 2B, and the power transmission mechanism T. I have it.
- part of the first output member 2A and part of the second output member 2B are exposed to the outside of the case 3.
- the first wheel W1 and the second wheel W2 are a pair of left and right wheels (for example, a pair of left and right front wheels or a pair of left and right rear wheels) of the vehicle (vehicle on which the vehicle drive device 100 is mounted).
- the first output member 2A is connected to rotate integrally with the first wheel W1
- the second output member 2B is connected to rotate integrally with the second wheel W2.
- the first output member 2A is connected to the first wheel W1 via a constant velocity joint, for example
- the second output member 2B is connected to the second wheel W2 via a constant velocity joint, for example.
- the power transmission mechanism T includes a first transmission system T1 that transmits the torque of the first rotating electrical machine 1A to at least the first output member 2A, and a first transmission system T1 that transmits the torque of the second rotating electrical machine 1B to at least the second output member. and a second transmission system T2 that transmits to 2B.
- the vehicle drive device 100 transmits the torque of the first rotating electric machine 1A to at least the first output member 2A and transmits the torque of the second rotating electric machine 1B to at least the second output member 2B to drive the vehicle.
- the first rotating electrical machine 1A and the second rotating electrical machine 1B are electrically connected to a power storage device (not shown) via an inverter unit 90, which will be described later.
- the first rotating electric machine 1A and the second rotating electric machine 1B are powered by being supplied with electric power from the electric storage device, or supply the electric power generated by the inertial force of the vehicle or the like to the electric storage device and store it.
- the first rotating electric machine 1A and the second rotating electric machine 1B are provided so as to be rotatable independently of each other.
- the first transmission system T1 is configured to transmit the torque of the first rotating electric machine 1A to both the first output member 2A and the second output member 2B
- the second transmission system T2 It is configured to transmit the torque of the rotating electric machine 1B to both the first output member 2A and the second output member 2B. That is, the portion of the first transmission system T1 on the side opposite to the first rotary electric machine 1A and the portion of the second transmission system T2 on the side opposite to the second rotary electric machine 1B are used as a common transmission system.
- the power transmission mechanism T distributes and transmits the torque of the first rotating electrical machine 1A and the torque of the second rotating electrical machine 1B to the first output member 2A and the second output member 2B.
- the first rotating electric machine 1A and the second rotating electric machine 1B are arranged on the first axis X1, and the first output member 2A and the second output member 2B are arranged on the second axis X2 different from the first axis X1.
- the first axis X1 and the second axis X2 are arranged parallel to each other.
- an axial direction L is defined as a direction parallel to the first axis X1 and the second axis X2.
- the side of the axial direction L where the first rotating electrical machine 1A is arranged with respect to the second rotating electrical machine 1B is defined as an axial first side L1
- the side opposite to the axial direction first side L1 is defined as an axial direction second side. Let it be L2.
- the first transmission system T1 includes a first counter gear mechanism 5A
- the second transmission system T2 includes a second counter gear mechanism 5B.
- the first counter gear mechanism 5A and the second counter gear mechanism 5B are arranged on the third axis X3 different from the first axis X1 and the second axis X2.
- the first axis X1, the second axis X2, and the third axis X3 are arranged parallel to each other.
- the first axis X1, the second axis X2, and the third axis X3 are virtual axes.
- the vehicle drive device 100 is mounted on the vehicle with the axial direction L extending along the left-right direction of the vehicle. Specifically, it is mounted on the vehicle such that the first axial side L1 is on the left side of the vehicle and the second axial side L2 is on the right side of the vehicle.
- the width direction H is defined as a direction orthogonal to the axial direction L when viewed in the vertical direction (viewed along the vertical direction V (vertical direction)). do.
- One side in the width direction H is defined as a first width direction side H1
- the other side in the width direction H is defined as a second width direction side H2.
- the side in the width direction H on which the first axis X1 is arranged with respect to the second axis X2 is defined as a width direction first side H1
- the side opposite to the width direction first side H1 is defined as a width direction second side.
- the width direction H coincides with the longitudinal direction of the vehicle.
- the width direction first side H1 is the vehicle rear side
- the width direction second side H2 is the vehicle front side.
- the first rotating electric machine 1A includes a first stator 11A fixed to the case 3 and a first rotor 12A rotatably supported with respect to the first stator 11A.
- the second rotating electric machine 1B includes a second stator 11B fixed to the case 3 and a second rotor 12B rotatably supported with respect to the second stator 11B.
- the first driving force source that outputs the torque transmitted by the first transmission system T1 is the first rotating electric machine 1A having the first rotor 12A
- the torque transmitted by the second transmission system T2 is
- the output second driving force source is the second rotating electric machine 1B having the second rotor 12B.
- the first rotating electrical machine 1A and the second rotating electrical machine 1B are inner rotor type rotating electrical machines. Therefore, the first rotor 12A is arranged inside the first stator 11A in the radial direction (the radial direction with respect to the first axis X1), and the second rotor 12B is arranged radially inside the second stator 11B (the first axis X1). X1 in the radial direction).
- the first arrangement area A1 which is the arrangement area in the axial direction L of the first rotating electrical machine 1A, coincides with the arrangement area in the axial direction L of the first stator 11A.
- a second arrangement area A2 which is the arrangement area in the axial direction L of the rotary electric machine 1B, matches the arrangement area in the axial direction L of the second stator 11B.
- Each of the first stator 11A and the second stator 11B includes a stator core 14 and coil end portions 15 protruding from the stator core 14 on both sides in the axial direction L. As shown in FIG.
- the coil end portion 15 on the first axial side L1 is formed by a portion of the coil wound around the stator core 14 that protrudes from the stator core 14 to the first axial side L1, and the coil end portion 15 on the second axial side L2 is formed. is formed by a portion of a coil wound around the stator core 14 that protrudes from the stator core 14 toward the second side L2 in the axial direction.
- the arrangement areas in the axial direction L of the first stator 11A and the second stator 11B are the ends of the coil end portions 15 on the first axial side L1 and the coil ends on the second axial side L2. It is an area in the axial direction L between the end of the portion 15 on the second axial side L2.
- the outer diameter of the first rotating electrical machine 1A is equal to the outer diameter of the second rotating electrical machine 1B.
- the outer diameter of stator core 14 provided in first stator 11A is equal to the outer diameter of stator core 14 provided in second stator 11B.
- the first transmission system T1 includes a first input gear 4A connected to rotate integrally with the first rotor 12A, and the second transmission system T2 connects to rotate integrally with the second rotor 12B. and a second input gear 4B.
- the first rotor 12A is connected to rotate integrally with the first rotor shaft 13A.
- a first input gear 4A is formed on the outer surface of a portion of the first rotor shaft 13A on the second side L2 in the axial direction from the first rotor 12A.
- the second rotor 12B is connected to rotate integrally with the second rotor shaft 13B.
- a second input gear 4B is formed on the outer surface of a portion of the second rotor shaft 13B on the first side L1 in the axial direction from the second rotor 12B.
- the first transmission system T1 includes the first counter gear mechanism 5A
- the second transmission system T2 includes the second counter gear mechanism 5B
- the first counter gear mechanism 5A includes a first counter input gear 51A meshing with the first input gear 4A and a first counter output gear 52A rotating integrally with the first counter input gear 51A.
- the first counter output gear 52A is connected to rotate integrally with the first counter input gear 51A via a first counter shaft 53A.
- the first counter output gear 52A is arranged on the first side L1 in the axial direction with respect to the first counter input gear 51A.
- the second counter gear mechanism 5B includes a second counter input gear 51B that meshes with the second input gear 4B and a second counter output gear 52B that rotates integrally with the second counter input gear 51B.
- the second counter output gear 52B is connected to rotate integrally with the second counter input gear 51B via a second counter shaft 53B.
- the second counter output gear 52B is arranged on the second side L2 in the axial direction with respect to the second counter input gear 51B.
- the first transmission system T1 includes the first differential input gear 7A
- the second transmission system T2 includes the second differential input gear 7B.
- the first differential input gear 7A is arranged on the second axis X2 and receives the rotation of the first rotating electric machine 1A.
- the second differential input gear 7B is arranged on the second axis X2. is a gear to which the rotation of the second rotating electrical machine 1B is input.
- the first differential input gear 7A is a gear that meshes with the first counter output gear 52A, and the first differential input gear 7A receives the rotation of the first rotating electric machine 1A as the first counter gear mechanism 5A.
- the second differential input gear 7B is a gear that meshes with the second counter output gear 52B, and the rotation of the second rotary electric machine 1B is transmitted to the second differential input gear 7B by the second counter gear. Input via mechanism 5B.
- the first differential input gear 7A is formed to have the same diameter as the second differential input gear 7B.
- the power transmission mechanism T distributes the torque of the first rotating electrical machine 1A and the torque of the second rotating electrical machine 1B to the first output member 2A and the second output member 2B. introduce. Specifically, the power transmission mechanism T transmits the torque of the first rotating electrical machine 1A transmitted to the first differential input gear 7A and the torque of the second rotating electrical machine 1B transmitted to the second differential input gear 7B. , a differential gear mechanism 6 for distributing to the first output member 2A and the second output member 2B.
- the differential gear mechanism 6 includes a first input rotary element drivingly connected to the first differential input gear 7A, a second input rotary element drivingly connected to the second differential input gear 7B, and a first output member 2A. and a second output rotary element drivingly connected to the second output member 2B.
- the order of rotation speed of these four rotary elements is the first input rotary element, the first output rotary element, the second output rotary element, and the second input rotary element.
- the "order of rotational speed” refers to the order of rotational speed in the rotating state of each rotating element.
- the rotational speed of each rotating element varies depending on the rotational state of the differential gear mechanism 6, but the order of the rotational speed of each rotating element is fixed because it is determined by the structure of the differential gear mechanism 6. .
- the order of rotation speed of each rotating element is the same as the order of arrangement in the velocity diagram (also referred to as collinear diagram) of each rotating element.
- the differential gear mechanism 6 is a planetary gear mechanism (specifically, a Ravigneau-type planetary gear mechanism) including four rotating elements.
- the differential gear mechanism 6 includes four rotating elements, a first sun gear S61, a second sun gear S62, a carrier C6, and a ring gear R6.
- the carrier C6 rotatably supports a first pinion gear P61 and a second pinion gear P62 that rotate integrally via a pinion shaft P63.
- the first pinion gear P61 is formed to have a smaller diameter than the second pinion gear P62.
- the first pinion gear P61 meshes with the first sun gear S61
- the second pinion gear P62 meshes with the second sun gear S62 and also meshes with the ring gear R6.
- the ring gear R6 is a first input rotary element drivingly connected to the first differential input gear 7A.
- the ring gear R6 is coupled to rotate integrally with the first differential input gear 7A.
- the first differential input gear 7A is formed on the outer peripheral surface of the first connecting member 8A, and the ring gear R6 is connected to rotate integrally with the first connecting member 8A.
- the second sun gear S62 is a second input rotary element drivingly connected to the second differential input gear 7B.
- the second sun gear S62 is coupled to rotate integrally with the second differential input gear 7B.
- the second differential input gear 7B is formed on the outer peripheral surface of the second connecting member 8B, and the second sun gear S62 is integrated with the second connecting member 8B via the second connecting shaft 9B. connected for rotation.
- the carrier C6 is a first output rotary element drivingly connected to the first output member 2A.
- the carrier C6 is coupled to rotate integrally with the first output member 2A.
- the first sun gear S61 is a second output rotary element drivingly connected to the second output member 2B.
- the first sun gear S61 is coupled to rotate integrally with the second output member 2B.
- the first sun gear S61 is connected to rotate integrally with the second output member 2B via a first connecting shaft 9A.
- the vehicle drive device 100 includes a case 3.
- the case 3 includes a case body member 30, a first cover member 31A, and a second cover member 31B.
- the case body member 30, the first cover member 31A, and the second cover member 31B are joined together, and in this embodiment, are joined together using bolts.
- the first cover member 31A is arranged on the first side L1 in the axial direction with respect to the case main body member 30, and is joined to the case main body member 30 at the first joint J1.
- the first cover member 31A is joined to the case body member 30 so as to close the opening of the case body member 30 on the axial first side L1.
- the second cover member 31B is arranged on the second side L2 in the axial direction with respect to the case main body member 30, and is joined to the case main body member 30 at the second joint J2.
- the second cover member 31B is joined to the case body member 30 so as to close the opening of the case body member 30 on the axial second side L2.
- a first rotating electric machine 1A, a second rotating electric machine 1B, a first output member 2A, a second output member 2B, and power transmission are provided in a space surrounded by the case body member 30, the first cover member 31A, and the second cover member 31B.
- a mechanism T is accommodated. That is, the case 3 includes a first housing chamber 70A that houses the first rotating electrical machine 1A, the second rotating electrical machine 1B, the first output member 2A, the second output member 2B, and the power transmission mechanism T.
- the first housing chamber 70A is formed surrounded by the case body member 30, the first cover member 31A, and the second cover member 31B.
- an oil pump 20 which will be described later, is also accommodated in the first accommodation chamber 70A.
- the case 3 includes a support portion 44 in this embodiment.
- the support portion 44 is formed in a wall shape along a plane orthogonal to the axial direction L, for example.
- the support portion 44 may be a part of the case body member 30 or may be a separate member from the case body member 30 .
- the support portion 44 is arranged between the first rotating electrical machine 1A and the second rotating electrical machine 1B in the axial direction L, and in the present embodiment, the axial direction L between the first rotating electrical machine 1A and the second rotating electrical machine 1B.
- the first rotary electric machine 1A, the first counter gear mechanism 5A, and the first differential input gear 7A are accommodated in a portion of the first accommodation chamber 70A on the first side L1 in the axial direction with respect to the support portion 44.
- a second rotary electric machine 1B, a second counter gear mechanism 5B, and a second differential input gear 7B are housed in a portion of the chamber 70A on the second side L2 in the axial direction with respect to the support portion 44 .
- the differential gear mechanism 6 is housed in a portion of the first housing chamber 70A on the axial first side L1 with respect to the support portion 44 .
- the vehicle drive device 100 includes an inverter unit 90 that drives the first rotating electrical machine 1A and the second rotating electrical machine 1B.
- FIG. 2 shows the inverter unit 90 in a simplified manner
- the inverter unit 90 includes an inverter (inverter circuit) that converts power between DC power and AC power, and parts associated with the inverter.
- the inverter is, for example, a power module in which a plurality of elements (switching elements, etc.) are modularized.
- Components associated with the inverter are, for example, the first terminal block 91A and the second terminal block 91B shown in FIGS. is a smoothing capacitor or the like for smoothing the
- the first axis X1 is arranged above the second axis X2 V1 and on one side in the width direction H (specifically, the first side in the width direction H1). Further, as shown in FIG. 2, the first rotating electrical machine 1A and the second rotating electrical machine 1B are arranged apart from each other in the axial direction L. As shown in FIG. As shown in FIGS. 2 and 5, the inverter unit 90 is located between the first rotating electrical machine 1A and the second rotating electrical machine 1B in the axial direction L (when viewed along the axial direction L).
- the inverter unit 90 is arranged above the second axis X2 V1 and on the second axis X2. It is arranged so as to overlap with at least a part of the member that is attached when viewed in the up-down direction.
- the first rotating electric machine 1A and the second rotating electric machine 1B are arranged on the same axis and separated from each other in the axial direction L, the first rotating electric machine 1A and the second rotating electric machine 1B are separated from each other.
- a region between the axial direction L and overlapping with the first rotating electric machine 1A and the second rotating electric machine 1B when viewed in the axial direction tends to become a dead space.
- the first axis X1 is arranged above the second axis X2 and on the first side H1 in the width direction, the area above the second axis X2 V1 is likely to be a dead space.
- the inverter unit 90 can be arranged using two areas that tend to be dead spaces. An increase in size of the vehicle drive device 100 can be suppressed.
- the area V1 above the second axis X2 is also used as the arrangement area for the inverter unit 90. Since a large area for arranging the inverter unit 90 in the vertical direction can be secured, the vertical dimension of the area for arranging the inverter unit 90 can be easily reduced. Therefore, the inverter unit 90 can be arranged in the upper portion of the vehicle drive device 100 while suppressing an increase in size in the vertical direction V of the vehicle drive device 100 .
- the inverter unit 90 is arranged so as to overlap at least portions of the first rotating electrical machine 1A and the second rotating electrical machine 1B that are arranged above the first axis X1 V1 when viewed in the axial direction. (See Figure 5). Further, the positional relationship in the axial direction L between the inverter unit 90 shown in FIG. 2 and each of the first differential input gear 7A and the second differential input gear 7B, and the inverter unit 90 shown in FIG.
- the inverter unit 90 is positioned V1 above the first differential input gear 7A and the second differential input gear 7B, It is arranged so as to overlap with the first differential input gear 7A and the second differential input gear 7B when viewed in the vertical direction. That is, in the present embodiment, the "at least part of the members arranged on the second axis X2" includes the first differential input gear 7A and the second differential input gear 7B. Further, in the present embodiment, the inverter unit 90 is arranged above the second axis X2 V1 so as to overlap the second axis X2 when viewed in the vertical direction.
- the inverter unit 90 is housed in the case 3 .
- the case 3 includes a second storage chamber 70B that stores the inverter unit 90 in addition to the first storage chamber 70A described above.
- the case 3 includes a case body member 30, a first cover member 31A, and a second cover member 31B, as well as a third cover member 31C.
- the third cover member 31C is arranged above the case body member 30 V1, and is joined to the case body member 30 so as to close the opening of the case body member 30 facing upward V1 (see FIG. 4). ing.
- the third cover member 31C is joined to the case body member 30 using bolts.
- An inverter unit 90 is accommodated in a space surrounded by the case main body member 30 and the third cover member 31C. That is, the second storage chamber 70B is formed surrounded by the case body member 30 and the third cover member 31C.
- the case body member 30 includes a first side wall 40A forming a side wall on the first side L1 in the axial direction of the second storage chamber 70B and a second side wall in the axial direction of the second storage chamber 70B.
- the second side wall 40B forming the side wall of L2
- the third side wall 40C forming the side wall on the width direction first side H1 of the second storage chamber 70B, and the side wall on the width direction second side H2 of the second storage chamber 70B are and a fourth side wall 40D.
- the first side wall 40A, the second side wall 40B, the third side wall 40C, and the fourth side wall 40D are formed integrally with the case main body member 30. As shown in FIG.
- the portion of the first side wall 40A on the second side H2 in the width direction is arranged on the first side L1 in the axial direction relative to the portion on the first side H1 in the width direction of the first side wall 40A so as to form a first region 72A, which will be described later. It is In addition, the portion of the second side wall 40B on the second side H2 in the width direction is closer to the second side L2 in the axial direction than the portion on the first side H1 in the width direction of the second side wall 40B so as to form a second region 72B described later. are placed in
- the second storage chamber 70B is surrounded by a first side wall 40A, a second side wall 40B, a third side wall 40C, a fourth side wall 40D, a third partition wall 61C described later, and a third cover member 31C. formed.
- the third partition wall 61C constitutes the bottom wall of the second storage chamber 70B.
- the portion of the third partition wall 61C on the first widthwise side H1 is arranged below the portion of the third partition wall 61C on the second widthwise side H2 V2, and the second storage chamber 70B.
- the portion on the first widthwise side H1 is formed deeper than the portion on the second widthwise side H2.
- the third side wall 40C (specifically, the lower portion of the third side wall 40C) is inclined toward the widthwise second side H2 toward the lower side V2.
- the case body member 30 is integrally formed with the partition wall forming portion 60, the first accommodation chamber forming portion 62A, and the second accommodation chamber forming portion 62B. That is, the case body member 30 includes a partition wall forming portion 60, a first accommodation chamber forming portion 62A, and a second accommodation chamber forming portion 62B.
- a case main body member 30 is, for example, a casting manufactured using an integral molding technique by casting.
- the partition wall forming part 60 is a part that forms a partition wall that partitions the first storage chamber 70A and the second storage chamber 70B.
- the first storage chamber 70A and the second storage chamber 70B are formed by one partition wall on each of the first axial side L1, the second axial side L2, and the lower side. are separated by Specifically, as shown in FIGS. 2 to 4, the portion of the first storage chamber 70A located on the first side L1 in the axial direction with respect to the second storage chamber 70B (where the first rotating electrical machine 1A is stored). and the second accommodation chamber 70B are partitioned in the axial direction L by the first partition wall 61A.
- a portion of the first side wall 40A in the width direction H (specifically, an intermediate portion in the width direction H) constitutes the first partition wall 61A.
- a portion of the first storage chamber 70A arranged on the second side L2 in the axial direction with respect to the second storage chamber 70B (a portion in which the second rotating electric machine 1B is stored) and the second storage chamber 70B are It is partitioned in the axial direction L by the second partition wall 61B.
- a portion of the second side wall 40B in the width direction H (specifically, an intermediate portion in the width direction H) constitutes the second partition wall 61B.
- the portion of the first storage chamber 70A arranged downward V2 with respect to the second storage chamber 70B and the second storage chamber 70B are partitioned in the vertical direction V by the third partition wall 61C.
- the partition wall forming part 60 forms these three partition walls (the first partition wall 61A, the second partition wall 61B, and the third partition wall 61C in the concrete station).
- the first storage chamber forming portion 62A is a portion other than the partition wall forming portion 60 and forms at least a portion of the first storage chamber 70A. In this embodiment, the first storage chamber forming portion 62A forms part of the first storage chamber 70A as described below.
- the case 3 is formed in a tubular shape extending in the axial direction L and has a peripheral wall portion surrounding the first rotating electric machine 1A (in this embodiment, also surrounding the differential gear mechanism 6).
- the first storage chamber forming portion 62A is a portion of the peripheral wall portion on the second axial side L2 (specifically, a portion of the peripheral wall portion on the second axial side L2 relative to the first joint portion J1). ).
- the case 3 includes a peripheral wall portion which is formed in a cylindrical shape extending in the axial direction L and surrounds the second rotating electrical machine 1B (in this embodiment, also surrounds the oil pump 20), and has a first accommodation chamber forming portion.
- 62A forms a portion of the peripheral wall portion on the first axial side L1 (specifically, a portion of the peripheral wall portion on the first axial side L1 of the second joint J2).
- the case 3 includes a peripheral wall portion (a peripheral wall portion 42 described later) formed in a cylindrical shape extending in the axial direction L and surrounding the first differential input gear 7A and the second differential input gear 7B.
- the accommodation chamber forming portion 62A forms a portion of the peripheral wall portion 42 (specifically, a portion of the peripheral wall portion 42 not formed by the third partition wall 61C).
- the second storage chamber forming portion 62B is a portion other than the partition wall forming portion 60 and forms at least a portion of the second storage chamber 70B.
- the second storage chamber forming portion 62B is a portion of the first side wall 40A that does not constitute the first partition wall 61A (here, the width of the first side wall 40A). parts on both sides in the direction H), parts of the second side wall 40B that do not constitute the second partition wall 61B (here, parts on both sides of the second side wall 40B in the width direction H), a third side wall 40C, and a fourth side wall 40C. It forms a side wall 40D.
- the vehicle drive device 100 further includes the case 3.
- the case 3 includes the first rotating electrical machine 1A, the second rotating electrical machine 1B, the first output member 2A, the second output member 2B, and a first accommodation chamber 70A that accommodates the power transmission mechanism T, and a second accommodation chamber 70B that accommodates the inverter unit 90.
- the case 3 forms partition walls (in this example, the first partition wall 61A, the second partition wall 61B, and the third partition wall 61C) that partition the first storage chamber 70A and the second storage chamber 70B.
- partition wall forming portion 60 which is a part, a portion other than the partition wall forming portion 60 and forming at least a part of the first accommodation chamber 70A (first accommodation chamber forming portion 62A), and the partition wall forming portion 60
- the case main body member 30 is integrally formed with a portion (second storage chamber forming portion 62B) that forms at least a portion of the second storage chamber 70B.
- the member in which the partition wall forming portion 60 is formed has a portion that forms at least a portion of the first storage chamber 70A and a portion that forms at least a portion of the second storage chamber 70B. Therefore, the number of parts of the case 3 can be easily reduced compared to the case where the partition wall forming part 60 is not formed with these two parts. By reducing the number of parts of the case 3, it is possible to reduce the number of joints in the case 3 and reduce the size of the vehicle drive device 100.
- the first accommodation chamber 70A and the second accommodation chamber 70B can be partitioned by a single partition wall formed by the partition wall forming portion 60 .
- the gap between the partition walls may increase the size of the vehicle drive device 100.
- the first storage chamber 70A and the second storage chamber 70B can be partitioned by a single partition wall, so that the vehicle drive device 100 can be easily reduced in size.
- connection path that electrically connects the inverter unit 90 and the rotating electrical machine passes through the through hole formed in the partition wall.
- a seal member is usually provided to seal the clearance of the through hole.
- the vehicle drive device 100 further includes a case 3, and the case 3 includes the first rotating electrical machine 1A, the second rotating electrical machine 1B, the first output member 2A, the second output member 2B, and the power transmission mechanism.
- a first accommodation chamber 70A that accommodates T and a second accommodation chamber 70B that accommodates the inverter unit 90 are provided.
- the width direction H the side on which the first axis X1 is arranged with respect to the second axis X2 is defined as a width direction first side H1, and the side opposite to the width direction first side H1 is defined as a width direction second side H2.
- the second housing chamber 70B includes a first portion 71A that is sandwiched between the first rotating electric machine 1A and the second rotating electric machine 1B in the axial direction L, and the first portion 71A. and a second portion 71B that is a portion on the width direction second side H2.
- the second portion 71B is formed to have a larger dimension in the axial direction L than the first portion 71A.
- a portion of the second portion 71B is arranged so as to overlap the first storage chamber 70A when viewed in the width direction (viewed along the width direction H). .
- the first portion 71A is less subject to restrictions on the dimension in the axial direction L.
- the dimension in the axial direction L can be increased as described above, so that the formation area of the second storage chamber 70B in the vertical direction view can be widened.
- the vehicle drive device 100 is prevented from being enlarged in the vertical direction V, It is possible to widen the formation area of the second storage chamber 70B when viewed in the vertical direction.
- the inverter unit 90 can be arranged in the upper portion of the vehicle drive device 100 while suppressing an increase in size in the vertical direction V of the vehicle drive device 100 .
- the portion of the second portion 71B on the first side L1 in the axial direction (first region 72A described later) accommodates the first rotating electric machine 1A in the first accommodation chamber 70A when viewed in the width direction.
- a portion of the second portion 71B on the second axial side L2 (a second region 72B described later) accommodates the second rotating electric machine 1B in the first accommodation chamber 70A as viewed in the width direction. It is arranged so that it overlaps with the part that is
- the second portion 71B includes a first region 72A, which is a region extended to the first side L1 in the axial direction with respect to the first portion 71A, and a first portion 71A.
- a second region 72B which is a region extended to the second side L2 in the axial direction, is provided.
- the second portion 71B includes a third region 72C, which is a region expanded to the widthwise second side H2 with respect to the first portion 71A, and the third region 72C of the second portion 71B is wider than the third region 72C.
- the region on the first side L1 in the axial direction is the first region 72A
- the region on the second side L2 in the axial direction from the third region 72C in the second portion 71B is the second region 72B.
- a first terminal block 91A for electrically connecting the inverter unit 90 and the first rotating electrical machine 1A is arranged in the first area 72A, and the inverter unit 90 and the second rotating electrical machine 1B are connected to each other.
- a second terminal block 91B for electrically connecting is arranged in the second region 72B.
- the electrical connection with the first rotating electric machine 1A is performed.
- the first terminal block 91A can be arranged at a position in the axial direction L that facilitates connection
- the second terminal block 91B can be arranged at a position in the axial direction L that facilitates electrical connection with the second rotating electric machine 1B.
- the central region (the third region 72C), which is the region of the second portion 71B expanded to the second widthwise side H2 with respect to the first portion 71A, is avoided.
- a first terminal block 91A and a second terminal block 91B are arranged in a region continuous in the width direction H including the central region (third region 72C) of the first portion 71A and the second portion 71B. Therefore, in a region continuous in the width direction H including the central region (third region 72C) of the first portion 71A and the second portion 71B, the components of the inverter unit 90 other than the first terminal block 91A and the second terminal block 91B are arranged. Elements can be arranged, and each component of the inverter unit 90 can be easily arranged appropriately in the second storage chamber 70B.
- each of the first terminal block 91A and the second terminal block 91B includes an inverter-side terminal 92 electrically connected to an inverter (inverter circuit) included in the inverter unit 90. .
- the inverter and each of the first terminal block 91A and the second terminal block 91B are electrically connected inside the second storage chamber 70B.
- each of the first terminal block 91A and the second terminal block 91B includes a rotating electrical machine side terminal 93 electrically connected to the rotating electrical machine.
- the inverter-side terminal 92 and the rotating electric machine-side terminal 93 provided on the first terminal block 91A are electrically connected, and the inverter-side terminal 92 and the rotating electric machine-side terminal 93 provided on the second terminal block 91B are electrically connected.
- the first terminal block 91A has rotary electric machine side terminals 93 similar to the rotary electric machine side terminals 93 provided in the second terminal block 91B.
- the rotating electrical machine side terminal 93 provided on the first terminal block 91A and the first rotating electrical machine 1A (for example, a bus bar connected to the coil provided on the first stator 11A) are electrically connected inside the first housing chamber 70A.
- the rotating electric machine side terminal 93 provided on the second terminal block 91B and the second rotating electric machine 1B are electrically connected inside the first housing chamber 70A. be done.
- the first terminal block 91A and the second terminal block 91B are arranged so as to pass through a partition wall (specifically, a third partition wall 61C) that partitions the first storage chamber 70A and the second storage chamber 70B.
- a partition wall specifically, a third partition wall 61C
- the connection path electrically connecting the inverter unit 90 and the first rotating electrical machine 1A and the connection path electrically connecting the inverter unit 90 and the second rotating electrical machine 1B are formed in the third partition wall 61C. It is formed so as to pass through a through hole (see FIG. 2).
- the through hole through which the first terminal block 91A is inserted is provided with a seal member for sealing the gap of the through hole
- the through hole through which the second terminal block 91B is inserted is provided with the through hole.
- a sealing member is provided for sealing the gap of the hole.
- the case 3 includes a first surrounding wall 41A that surrounds the first rotating electrical machine 1A and a second surrounding wall 41B that surrounds the second rotating electrical machine 1B.
- the first surrounding wall 41A is formed by the portion of the case body member 30 on the axial first side L1 and the first cover member 31A
- the second surrounding wall 41B is formed by the case body member 30 in the axial direction. It is formed by the portion on the second side L2 and the second cover member 31B.
- the first surrounding wall 41A includes a first peripheral wall portion, a first wall portion, and a second wall portion.
- the first peripheral wall portion is a wall portion that is formed in a tubular shape extending in the axial direction L and surrounds the first rotating electric machine 1A (and also surrounds the differential gear mechanism 6 in this embodiment).
- the portion of the first peripheral wall portion on the first axial side L1 is formed by the first cover member 31A
- the portion on the second axial side L2 of the first peripheral wall portion is formed by the case main body member 30.
- the first wall is a wall that closes the opening on the first side L1 in the axial direction of the first peripheral wall.
- the first wall is formed by the first cover member 31A.
- a through hole is formed in the first wall portion (first cover member 31A), and the first output member 2A is arranged in this through hole.
- the second wall portion is a wall portion that closes a part of the opening on the axial second side L2 of the first peripheral wall portion, and the first rotary electric machine 1A is located on the axial second side L2 with respect to the first rotary electric machine 1A. are arranged so as to face each other in the axial direction L.
- the second wall portion is formed by the case body member 30 (specifically, the portion of the case body member 30 including the first partition wall 61A).
- the second surrounding wall 41B includes a second peripheral wall portion, a third wall portion, and a fourth wall portion.
- the second peripheral wall portion is a wall portion that is formed in a cylindrical shape extending in the axial direction L and surrounds the second rotating electric machine 1B (and also surrounds the oil pump 20 in this embodiment).
- the portion of the second peripheral wall on the second axial side L2 is formed by the second cover member 31B
- the portion on the first axial side L1 of the second peripheral wall is formed by the case body member 30.
- the third wall is a wall that closes the opening on the second axial side L2 of the second peripheral wall.
- the third wall is formed by the second cover member 31B.
- a through hole is formed in the third wall portion (second cover member 31B), and the second output member 2B is arranged in this through hole.
- the fourth wall portion is a wall portion that closes a part of the opening portion on the first axial side L1 of the second peripheral wall portion, and the fourth wall portion closes the second rotating electrical machine 1B on the first axial side L1 with respect to the second rotating electrical machine 1B. are arranged so as to face each other in the axial direction L.
- the fourth wall portion is formed by the case body member 30 (specifically, the portion of the case body member 30 including the second partition wall 61B).
- the first surrounding wall 41A and the second surrounding wall 41B are spaced apart in the axial direction L. Therefore, a recess (the portion where the second storage chamber 70B is formed) is formed between the first surrounding wall 41A and the second surrounding wall 41B in the case 3 (specifically, the case body member 30) in the axial direction L.
- the portion of the case 3 that forms at least a portion of the second storage chamber 70B functions as a reinforcing rib that enhances the rigidity of the recess.
- the third side wall 40C and the fourth side wall 40D of the second storage chamber 70B are formed to connect the first surrounding wall 41A and the second surrounding wall 41B in the axial direction L.
- the third side wall 40C and the fourth side wall 40D (especially the third side wall 40C) function as reinforcing ribs.
- the case 3 includes a first surrounding wall 41A that surrounds the first rotating electrical machine 1A, a second surrounding wall 41B that surrounds the second rotating electrical machine 1B, and a second housing wall.
- a connecting wall in this example, a third side wall 40C and a 4 side walls 40D).
- the connecting wall (in this example, the third side wall 40C and the fourth side wall 40D) forming at least a part of the second storage chamber 70B is connected to the first surrounding wall 41A of the case 3. and the second surrounding wall 41B in the axial direction L to increase the rigidity of the concave portion. Since the case 3 can be reinforced using the connecting wall for forming the second storage chamber 70B in this way, it is easy to ensure the rigidity of the case 3 appropriately.
- the vehicle drive system 100 includes an oil pump 20 that supplies oil to the first rotating electrical machine 1A and the second rotating electrical machine 1B, and an oil cooler 22 that cools the oil.
- the oil pump 20 for example, an electric oil pump driven by an electric motor can be used.
- the type of pump is not particularly limited, and a gear pump, vane pump, screw pump, or the like can be used.
- the oil pump 20 is housed in the first housing chamber 70A.
- a configuration in which the oil pump 20 is not accommodated in the first accommodation chamber 70A (for example, a configuration in which it is attached to the outside of the case 3) may be employed.
- the oil pump 20 (specifically, the suction port of the oil pump 20) is connected via a first oil passage 24A to a strainer 21, which is a filter for removing foreign matter contained in the oil.
- the oil pump 20 sucks the oil stored inside the case 3 through the strainer 21 .
- the oil pump 20 (specifically, the discharge port of the oil pump 20) is connected to the oil cooler 22 via the second oil passage 24B, and the oil discharged from the oil pump 20 passes through the oil cooler 22. After that, it is supplied to the first rotating electrical machine 1A and the second rotating electrical machine 1B.
- the first oil passage 24A and the second oil passage 24B are formed using oil pipes, for example.
- the oil cooler 22 is configured to cool the oil by heat exchange between the oil and refrigerant (for example, cooling water, air, etc.).
- the oil cooler 22 is a water-cooled oil cooler that uses cooling water as a coolant.
- FIGS. and a piping member 23 for discharging cooling water from the oil cooler 22 are connected.
- the gear arranged on the outermost side R2 in the radial direction R (radial direction with respect to the second axis X2) (in other words, the gear with the largest diameter) is defined as the "first outer gear”, and among the gears arranged on the second axis X2 and constituting the second transmission system T2, the gear arranged on the outermost side R2 in the radial direction R shall be referred to as a "second peripheral gear".
- the first differential input gear 7A is the first peripheral gear
- the second differential input gear 7B is the second peripheral gear.
- the 1st differential input gear 7A and the 2nd differential input gear 7B are spaced apart in the axial direction L, and are arrange
- the first differential input gear 7A and the second differential input gear 7B are arranged apart in the axial direction L, the first differential input gear 7A and the second differential input gear A region between the gear 7B in the axial direction L and overlapping with at least one of the first differential input gear 7A and the second differential input gear 7B when viewed in the axial direction tends to be a dead space.
- the oil cooler 22 since the oil cooler 22 is arranged as described above, the oil cooler 22 can be arranged using a region that tends to become a dead space. An increase in size of the drive device 100 can be suppressed.
- the oil cooler 22 is located on the second side H2 in the width direction from the second axis X2 and in the axial direction L between the first differential input gear 7A and the second differential input gear 7B. and overlaps at least one of the first differential input gear 7A and the second differential input gear 7B when viewed in the axial direction.
- the first differential input gear 7A is formed to have the same diameter as the second differential input gear 7B
- the oil cooler 22 has the same diameter as the first differential input gear 7A and the second differential input gear 7B when viewed in the axial direction. It is arranged so as to overlap with both of the two differential input gears 7B.
- the case 3 includes a peripheral wall portion 42 covering the outer side R2 in the radial direction R with respect to the first differential input gear 7A and the second differential input gear 7B.
- the peripheral wall portion 42 is a wall portion continuous in the axial direction L.
- the peripheral wall portion 42 includes a portion that covers the outer side R2 in the radial direction R with respect to the first differential input gear 7A, a portion that covers the outer side R2 in the radial direction R with respect to the second differential input gear 7B, and a shaft. a portion located between these two portions in the direction L (hereinafter referred to as the “target portion”).
- the peripheral wall portion 42 is formed by the case main body member 30 (specifically, the first storage chamber forming portion 62A and the third partition wall 61C).
- a concave portion 43 recessed inward R1 in the radial direction R is formed in a portion of the peripheral wall portion 42 corresponding to the axial direction L between the first differential input gear 7A and the second differential input gear 7B. That is, a portion of the peripheral wall portion 42 and between the first differential input gear 7A and the second differential input gear 7B in the axial direction L (in other words, the above target portion) has radial
- a recessed portion 43 is formed on the inner side R1 of the R.
- the recess 43 is formed in a portion of the peripheral wall portion 42 on the second widthwise side H2 so as to be recessed on the first widthwise side H1. At least part of the oil cooler 22 is arranged to be accommodated in the recess 43 . That is, the oil cooler 22 is attached to the outside of the case 3 so that at least part of the oil cooler 22 is accommodated in the recess 43 .
- "to be accommodated in the recessed portion 43" means to be covered by the peripheral wall portion 42 when viewed from any side in the axial direction L.
- the entire main body of the oil cooler 22 (the portion where heat is exchanged between the oil and the refrigerant) is arranged to fit in the recess 43 .
- the vehicle drive device 100 includes the case 3 that houses the first rotating electric machine 1A, the second rotating electric machine 1B, the first output member 2A, the second output member 2B, and the power transmission mechanism T. is further provided.
- the case 3 includes a peripheral wall portion 42 that covers an outer side R2 in the radial direction R with respect to the first differential input gear 7A and the second differential input gear 7B.
- a recessed portion 43 recessed inward R1 in the radial direction R is formed in a portion between the first differential input gear 7A and the second differential input gear 7B.
- At least part of the oil cooler 22 is arranged to be accommodated in the recess 43 .
- the oil cooler 22 is often attached to the outside of the case 3.
- the vehicle drive device 100 is likely to have a shape in which the portion where the oil cooler 22 is attached protrudes outward from the surrounding portion, and the vehicle drive device 100 is located on the side where the oil cooler 22 is attached. 100 can be upsized.
- the peripheral wall portion 42 of the case 3 utilizes a region that tends to become a dead space between the first differential input gear 7A and the second differential input gear 7B in the axial direction L.
- the oil cooler 22 can be arranged such that a recess 43 is formed and at least part of the oil cooler 22 is accommodated in the recess 43 . Therefore, the oil cooler 22 can be attached to the outside of the case 3 while suppressing an increase in the size of the vehicle drive device 100 .
- a first arrangement area A1 which is an arrangement area in the axial direction L of the first rotating electric machine 1A
- a third arrangement area which is an arrangement area in the axial direction L of the differential gear mechanism 6 It overlaps with area A3.
- the arrangement area in the axial direction L of the carrier C6 provided in the differential gear mechanism 6 (the axial direction L between the end of the carrier C6 on the first axial side L1 and the end on the second axial side L2) area) is set as a third arrangement area A3.
- the second arrangement area A2 which is the arrangement area in the axial direction L of the second rotating electrical machine 1B
- the fourth arrangement area A4 which is the arrangement area in the axial direction L of the oil pump 20
- the oil cooler 22 is arranged so as to overlap at least one of the differential gear mechanism 6 and the oil pump 20 when viewed in the axial direction.
- the oil cooler 22 is arranged so as to overlap the differential gear mechanism 6 and not overlap the oil pump 20 when viewed in the axial direction (in FIG.
- the oil pump 20 omitted
- a configuration in which the oil cooler 22 overlaps with the oil pump 20 and does not overlap with the differential gear mechanism 6 when viewed in the axial direction and a configuration in which the oil cooler 22 overlaps the differential gear mechanism 6 and the oil pump when viewed in the axial direction 20 can also be arranged so as to overlap.
- the first driving force source (the driving force source that outputs the torque transmitted by the first transmission system T1) is the first rotating electric machine 1A having the first rotor 12A.
- the second driving force source (driving force source that outputs torque transmitted by the second transmission system T2) is the second rotating electrical machine 1B having the second rotor 12B.
- the first transmission system T1 includes a first input gear 4A connected to rotate integrally with the first rotor 12A, a third gear meshing with the first gear, and a fourth gear rotating integrally with the third gear.
- the second transmission system T2 includes a second input gear 4B connected to rotate integrally with the second rotor 12B, and a second input gear 4B that meshes with the second gear.
- the first differential input gear 7A is a gear that meshes with the first counter output gear 52A
- the second differential input gear 7B is a gear that meshes with the second counter output gear 52B.
- the power transmission mechanism T transmits the torque of the first rotating electrical machine 1A transmitted to the first differential input gear 7A and the torque of the second rotating electrical machine 1B transmitted to the second differential input gear 7B to the first output member. 2A and a differential gear mechanism 6 that distributes to the second output member 2B.
- the oil cooler 22 is arranged so as to overlap at least one of the differential gear mechanism 6 and the oil pump 20 when viewed in the axial direction.
- the first differential The diameters of the input gear 7A and the second differential input gear 7B tend to be large.
- the oil cooler is operated by utilizing the region between the first differential input gear 7A and the second differential input gear 7B in the axial direction L, which tends to become a dead space. 22 can be placed. Therefore, even if the diameters of the first differential input gear 7A and the second differential input gear 7B are large, the arrangement of the oil cooler 22 can prevent the vehicle drive device 100 from being further enlarged. can.
- the differential gear mechanism 6 and the oil pump 20 are arranged separately on both sides in the axial direction L in this way, it is possible to prevent one side of the vehicle drive device 100 in the axial direction L from becoming larger than the other side. Therefore, the shape of the vehicle drive device 100 can be easily made into a shape that is easy to mount on the vehicle.
- the oil cooler 22 is arranged so as to overlap at least one of the differential gear mechanism 6 and the oil pump 20 when viewed in the axial direction. It is easy to keep the dimension in the axial direction small.
- a second oil passage 24B which is an oil passage connecting the oil pump 20 and the oil cooler 22, connects the first differential input gear 7A and the second differential input gear 7B. Arranged so as to pass through an area between the axial direction L and overlapping at least one of the first differential input gear 7A and the second differential input gear 7B (both in the example shown in FIG. 6) when viewed in the axial direction. It is
- the second oil passage 24B which is the oil passage connecting the oil pump 20 and the oil cooler 22, is arranged as described above.
- the oil passages can also be arranged using a region that tends to become a dead space between the first differential input gear 7A and the second differential input gear 7B in the axial direction L. Therefore, it is easy to reduce the size of the vehicle drive device 100 .
- the second oil passage 24B is located below the second axis X2 V2 and between the first differential input gear 7A and the second differential input gear 7B in the axial direction L. It is arranged so as to pass through a region that overlaps at least one of the first differential input gear 7A and the second differential input gear 7B when viewed in the axial direction.
- a third oil passage 24C described below is positioned V1 above the second axis X2 and between the first differential input gear 7A and the second differential input gear 7B. It is arranged so as to pass through a region between the axial direction L and overlapping with at least one of the first differential input gear 7A and the second differential input gear 7B when viewed in the axial direction.
- a third oil passage 24C which is an oil passage connecting the oil cooler 22 and both the first rotating electrical machine 1A and the second rotating electrical machine 1B, is connected to the first differential input.
- a third oil passage 24C which is an oil passage connecting the oil cooler 22 and both the first rotating electrical machine 1A and the second rotating electrical machine 1B, is connected to the first differential input.
- the gear 7A and the second differential input gear 7B in the axial direction L at least one of the first differential input gear 7A and the second differential input gear 7B (in the example shown in FIG. 7, , both) are arranged to pass through the overlapping region.
- the third oil passage 24C which is the oil passage connecting the oil cooler 22 and both the first rotating electrical machine 1A and the second rotating electrical machine 1B, is arranged as described above.
- the dead space between the first differential input gear 7A and the second differential input gear 7B in the axial direction L is also present in the oil passage connecting the oil cooler 22 and both the first rotating electrical machine 1A and the second rotating electrical machine 1B. It can be arranged using an area that tends to be Therefore, it is easy to reduce the size of the vehicle drive device 100 .
- the oil passages connecting the oil cooler 22 and both the first rotating electric machine 1A and the second rotating electric machine 1B can be connected to the first rotating electric machine 1A and the second rotating electric machine 1A. It branches to both sides in the axial direction L from between the electric machine 1B in the axial direction L (for example, from the central portion in the axial direction L between the first rotary electric machine 1A and the second rotary electric machine 1B), and the first rotary electric machine It can be formed to reach each of 1A and the second rotating electric machine 1B.
- the length of the oil passage connecting the oil cooler 22 and the first rotating electric machine 1A and the length of the oil passage connecting the oil cooler 22 and the second rotating electric machine 1B can be easily brought to the same length, and the pressure in these two oil passages is reduced. Easy to even out losses. For example, by shortening the length of these two oil passages to the same extent, the pressure loss in these two oil passages can be reduced to the same extent.
- the configuration of the third oil passage 24C in the vehicle drive system 100 of this embodiment will be specifically described below.
- the third oil passage 24C includes the following common oil passage 25, first branch oil passage 26A, second branch oil passage 26B, third branch oil passage 26C, first cooling oil passage 27A, second cooling oil passage 27B, It has a third cooling oil passage 27C, a first lubricating oil passage 28A, and a second lubricating oil passage 28B.
- Each of these oil passages provided in the third oil passage 24 ⁇ /b>C is formed using an oil pipe, or formed in the wall portion of the case 3 , for example.
- the upstream end of the common oil passage 25 is connected to the oil cooler 22 .
- the common oil passage 25 is between the first differential input gear 7A and the second differential input gear 7B in the axial direction L, and is located between the first differential input gear 7A and the second differential input gear 7B when viewed in the axial direction. 7B (both sides in the example shown in FIG. 7).
- the common oil passage 25 is arranged, for example, in the axial direction L central portion between the first rotating electrical machine 1A and the second rotating electrical machine 1B.
- a first branched oil passage 26A, a second branched oil passage 26B, and a third branched oil passage 26C are connected in parallel to a downstream portion of the common oil passage 25.
- the discharged oil passes through the common oil passage 25 and is supplied to each of the first branch oil passage 26A, the second branch oil passage 26B, and the third branch oil passage 26C.
- the first branch oil passage 26A is formed so as to extend from the connection portion with the common oil passage 25 to the axial first side L1, and the second branch oil passage 26B extends from the connection portion with the common oil passage 25 in the axial direction.
- the third branch oil passage 26C is formed to extend to the second side L2, and the third branch oil passage 26C is formed to extend to the width direction first side H1 from the connection portion with the common oil passage 25. As shown in FIG. Therefore, the third oil passage 24C is formed to branch from the common oil passage 25 to both sides in the axial direction L and to the first widthwise side H1.
- the oil supplied from the common oil passage 25 to the first branch oil passage 26A is supplied to the first rotating electric machine 1A.
- a first cooling oil passage 27A and a first lubricating oil passage 28A are connected in parallel to a downstream portion of the first branch oil passage 26A, and the oil in the first branch oil passage 26A is It is supplied to each of the first cooling oil passage 27A and the first lubricating oil passage 28A.
- the oil in the first cooling oil passage 27A is supplied to the first rotating electrical machine 1A, and the first rotating electrical machine 1A is cooled by the oil.
- the oil in the first lubricating oil passage 28A is supplied to parts requiring lubrication such as bearings that support the first rotor shaft 13A, and the parts requiring lubrication are lubricated by the oil.
- an oil supply portion 97 that supplies oil to the first rotating electrical machine 1A is provided above the first rotating electrical machine 1A V1.
- the oil supply portion 97 supplies the oil supplied from the first cooling oil passage 27A to the first rotating electric machine 1A.
- the oil supply part 97 is a supply pipe extending along the axial direction L, and the oil inside the supply pipe is supplied from a hole (not shown) formed in the supply pipe to the first rotating electric machine. 1A (specifically, the first stator 11A).
- the oil in the first cooling oil passage 27A is supplied to the first rotating electric machine 1A via the oil supply portion 97.
- two oil supply portions 97 are provided on both sides in the width direction H across the first axis X1, and correspondingly, two first cooling oil passages 27A are provided in the first It is connected to the branch oil passage 26A (see FIG. 7).
- the oil supplied from the common oil passage 25 to the second branch oil passage 26B is supplied to the second rotating electric machine 1B.
- a second cooling oil passage 27B and a second lubricating oil passage 28B are connected in parallel to a downstream portion of the second branch oil passage 26B, and the oil in the second branch oil passage 26B is It is supplied to each of the second cooling oil passage 27B and the second lubricating oil passage 28B.
- the oil in the second cooling oil passage 27B is supplied to the second rotating electrical machine 1B, and the second rotating electrical machine 1B is cooled by the oil.
- the oil in the second lubricating oil passage 28B is supplied to parts requiring lubrication such as bearings that support the second rotor shaft 13B, and the parts requiring lubrication are lubricated by the oil.
- an oil supply unit similar to the oil supply unit 97 shown in FIG. is supplied to the second rotating electric machine 1B via the oil supply unit.
- the oil supplied from the common oil passage 25 to the third branch oil passage 26C is supplied to both the first rotating electric machine 1A and the second rotating electric machine 1B. Specifically, as shown in FIG. 2, between the first rotating electrical machine 1A and the second rotating electrical machine 1B in the axial direction L (in this example, the first rotating electrical machine 1A and the second rotating electrical machine 1B) on the first axis X1.
- a third cooling oil passage 27C to which oil is supplied from the third branch oil passage 26C is arranged in the central portion in the axial direction L between the electric machine 1B.
- the connecting portion of the third branch oil passage 26C with the third cooling oil passage 27C is formed in the support portion 44 .
- the oil in the third cooling oil passage 27C is supplied to the first rotating electrical machine 1A and the second rotating electrical machine 1B, and the first rotating electrical machine 1A and the second rotating electrical machine 1B are cooled by the oil.
- the end of the third cooling oil passage 27C on the first axial side L1 communicates with the inside of the hollow first rotor shaft 13A, and the end of the third cooling oil passage 27C on the second axial side L2 is hollow. is communicated with the inside of the second rotor shaft 13B. Therefore, the oil supplied from the third branched oil passage 26C to the third cooling oil passage 27C branches to both sides in the axial direction L and is supplied to the inside of the first rotor shaft 13A and the inside of the second rotor shaft 13B. be.
- the oil supplied from the third cooling oil passage 27C to the inside of the first rotor shaft 13A is supplied to the first rotating electrical machine 1A, and the first rotating electrical machine 1A is cooled by the oil.
- heat exchange between oil inside the first rotor shaft 13A and the first rotor shaft 13A cools the first rotor 12A fixed to the first rotor shaft 13A.
- oil discharged from a hole formed in the first rotor shaft 13A is supplied to the coil end portion 15 provided in the first stator 11A to cool the coil end portion 15 .
- the oil supplied from the third cooling oil passage 27C to the inside of the second rotor shaft 13B is supplied to the second rotating electrical machine 1B, and the second rotating electrical machine 1B is cooled by the oil.
- heat exchange between oil inside the second rotor shaft 13B and the second rotor shaft 13B cools the second rotor 12B fixed to the second rotor shaft 13B.
- the oil discharged from the hole formed in the second rotor shaft 13B is supplied to the coil end portion 15 of the second stator 11B to cool the coil end portion 15 .
- the configuration in which the first terminal block 91A is arranged in the first area 72A and the second terminal block 91B is arranged in the second area 72B has been described as an example.
- the present disclosure is not limited to such a configuration, and one or both of the first terminal block 91A and the second terminal block 91B are arranged in the third region 72C of the second portion 71B, or the first terminal One or both of the base 91A and the second terminal block 91B may be arranged on the first portion 71A.
- the second portion 71B is formed to have a larger dimension in the axial direction L than the first portion 71A, and a portion of the second portion 71B is the first storage chamber 70A when viewed in the width direction. has been described as an example. However, the present disclosure is not limited to such a configuration. A configuration that does not include a portion that overlaps with the storage chamber 70A is also possible. That is, the second portion 71B may be configured without the first region 72A and the second region 72B.
- the partition wall forming portion 60, the first storage chamber forming portion 62A, and the second storage chamber forming portion 62B are formed integrally with the case body member 30 as an example. explained. However, the present disclosure is not limited to such a configuration, and one or both of the first storage chamber forming portion 62A and the second storage chamber forming portion 62B is a member in which the partition wall forming portion 60 is formed (the case body member 30 ) may be configured so as not to be integrally formed.
- the configuration in which the inverter unit 90 is housed in the case 3 has been described as an example.
- the present disclosure is not limited to such a configuration, and for example, a configuration in which the inverter unit 90 housed in a case different from the case 3 is attached to the outside of the case 3 is also possible. That is, the case 3 may be configured without the second storage chamber 70B.
- a part of the peripheral wall portion 42 which is arranged in the axial direction L, is the first outer peripheral gear (the first differential input gear 7A in the above-described embodiment) and the second outer peripheral gear (the above-described In the embodiment, the concave portion 43 is formed in the portion between the second differential input gear 7B), and at least part of the oil cooler 22 is arranged to be accommodated in the concave portion 43, as an example.
- the present disclosure is not limited to such a configuration in which the oil cooler 22 is attached to the outside of the case 3, and a configuration in which the oil cooler 22 is accommodated in the first accommodation chamber 70A is also possible.
- An overlapping configuration has been described as an example.
- the present disclosure is not limited to such a configuration.
- a configuration in which the arrangement regions in the axial direction L do not overlap, or a configuration in which these are combined can also be used.
- the arrangement areas in the axial direction L of the first rotating electrical machine 1A and the oil pump 20 may overlap, and the arrangement areas in the axial direction L of the second rotating electrical machine 1B and the differential gear mechanism 6 may overlap. can.
- the configuration in which the oil cooler 22 overlaps with at least one of the differential gear mechanism 6 and the oil pump 20 when viewed in the axial direction has been described as an example.
- the present disclosure is not limited to such a configuration, and a configuration in which the oil cooler 22 overlaps neither the differential gear mechanism 6 nor the oil pump 20 when viewed in the axial direction may be employed.
- the second oil passage 24B which is the oil passage connecting the oil pump 20 and the oil cooler 22, is connected to the first outer peripheral gear (the first differential input gear 7A in the above embodiment).
- a region between the second peripheral gear (the second differential input gear 7B in the above embodiment) in the axial direction L and overlapping with at least one of the first peripheral gear and the second peripheral gear when viewed in the axial direction has been described as an example.
- the present disclosure is not limited to such a configuration, and a configuration in which the second oil passage 24B does not pass through the above region can also be employed.
- the third oil passage 24C which is an oil passage connecting the oil cooler 22 and both the first rotating electrical machine 1A and the second rotating electrical machine 1B, is connected to the first peripheral gear (in the above embodiment, , the first differential input gear 7A) and the second peripheral gear (in the above embodiment, the second differential input gear 7B) in the axial direction L, between the first peripheral gear and the second
- the configuration has been described as an example in which it is arranged so as to pass through a region that overlaps with at least one of the two outer peripheral gears.
- the present disclosure is not limited to such a configuration, and a configuration in which the third oil passage 24C does not pass through the above region can also be employed.
- the first peripheral gear (the first differential input gear 7A in the above embodiment) is the same as the second peripheral gear (the second differential input gear 7B in the above embodiment).
- the configuration has been described as an example in which the diameter is formed.
- the present disclosure is not limited to such a configuration, and a configuration in which the first peripheral gear is formed to have a larger diameter or a smaller diameter than the second peripheral gear is also possible.
- the oil cooler 22 is located between the first and second peripheral gears in the axial direction L and between the first and second peripheral gears when viewed in the axial direction. It is good also as a structure arrange
- one or both of the second oil passage 24B and the third oil passage 24C are between the first and second peripheral gears in the axial direction L, It may be arranged so as to pass through a region that overlaps only one of the first outer peripheral gear and the second outer peripheral gear when viewed in the axial direction.
- the differential gear mechanism 6 is a planetary gear mechanism having four rotating elements.
- the present disclosure is not limited to such a configuration, and for example, the differential gear mechanism 6 includes two planetary gear mechanisms that are integrally provided with four rotating elements and coupled to differentially operate. It can also be a mechanism.
- the first transmission system T1 includes the first counter gear mechanism 5A
- the second transmission system T2 includes the second counter gear mechanism 5B.
- the present disclosure is not limited to such a configuration, and a configuration in which the first transmission system T1 does not include the first counter gear mechanism 5A and the second transmission system T2 does not include the second counter gear mechanism 5B is also possible. can.
- the first counter gear mechanism 5A instead of the first counter gear mechanism 5A, an idler gear meshing with both the first input gear 4A and the first differential input gear 7A is provided
- the second input gear 4B and A configuration may be employed in which an idler gear that meshes with both of the second differential input gears 7B is provided.
- the first differential input gear 7A may mesh with the first input gear 4A
- the second differential input gear 7B may mesh with the second input gear 4B.
- the first transmission system T1 transmits the torque of the first rotating electric machine 1A to both the first output member 2A and the second output member 2B
- the second transmission system T2 transmits the second
- the configuration in which the torque of the rotary electric machine 1B is transmitted to both the first output member 2A and the second output member 2B has been described as an example.
- the present disclosure is not limited to such a configuration, and the first transmission system T1 transmits the torque of the first rotating electric machine 1A only to the first output member 2A, It is also possible to adopt a configuration in which the torque of 1B is transmitted only to the second output member 2B. That is, the power transmission mechanism T may be configured without the differential gear mechanism 6 . An example of such a configuration is shown in FIG.
- the first transmission system T1 serves as a gear arranged on the second axis X2 and to which the rotation of the first rotating electrical machine 1A is input, which rotates integrally with the first output member 2A.
- the second transmission system T2 is arranged on the second axis X2 and serves as a gear to which the rotation of the second rotating electric machine 1B is input. Includes gear 6B.
- the first output gear 6A meshes with the first counter output gear 52A
- the second output gear 6B meshes with the second counter output gear 52B.
- the first output gear 6A is the first peripheral gear
- the second output gear 6B is the second peripheral gear.
- the inverter unit 90 is positioned between the first rotating electrical machine 1A and the second rotating electrical machine 1B in the axial direction L and between the first rotating electrical machine 1A and the second rotating electrical machine 1B when viewed in the axial direction. 1B, and furthermore, the inverter unit 90 is located above the second axis X2 V1 and overlaps at least a part of the members arranged on the second axis X2 when viewed in the vertical direction.
- the configuration in which the . is not limited to such a configuration.
- a configuration in which the unit 90 is arranged so as not to overlap any of the members arranged on the second axis X2 in a vertical view, or a configuration in which these are combined can be employed.
- the first driving force source (the driving force source that outputs the torque transmitted by the first transmission system T1) is the first rotating electric machine 1A including the first rotor 12A.
- the configuration in which the second driving force source (the driving force source that outputs the torque transmitted by the second transmission system T2) is the second rotating electric machine 1B having the second rotor 12B has been described as an example.
- the present disclosure is not limited to such a configuration, and at least one of the first driving force source and the second driving force source may be a driving force source other than a rotating electric machine (for example, an internal combustion engine). If both the first driving force source and the second driving force source are driving force sources other than the rotating electric machine, the vehicle driving device 100 may be configured without the inverter unit 90 .
- the first gear which is the gear arranged on the second axis (X2) and arranged on the outermost side (R2) in the radial direction (R) of the gears constituting the first transmission system (T1)
- Peripheral gears (6A, 7A) and gears arranged on the outermost (R2) in the radial direction (R) of the gears arranged on the second shaft (X2) and constituting the second transmission system (T2) and the second peripheral gears (6B, 7B) are spaced apart in the axial direction (L), the axes of the first peripheral gears (6A, 7A) and the second peripheral gears (6B, 7B)
- the area between the direction (L) and overlapping with at least one of the first outer gears (6A, 7A) and the second outer gears (6B, 7B) when viewed in the axial direction tends to be a dead space.
- the oil cooler (22) can be arranged using the area that tends to become a dead space. It is possible to suppress That is, according to this configuration, the oil cooler (22) can be arranged while suppressing an increase in the size of the vehicle drive system (100).
- a case (3) for housing is further provided, and the case (3) is positioned outside ( A peripheral wall portion (42) covering R2), and being a part of the peripheral wall portion (42), the first peripheral gear (6A, 7A) and the second peripheral gear (6B) are arranged in the axial direction (L).
- 7B) is formed with a recess (43) recessed inward (R1) in the radial direction (R), and at least part of the oil cooler (22) is formed in the recess (43) It is preferable that it is arranged so as to fit in.
- the oil cooler (22) is often mounted outside the case (3).
- the vehicle drive system (100) is likely to have a shape in which the portion to which the oil cooler (22) is attached protrudes outward from the surrounding portion, and the oil cooler (22) is attached.
- the vehicle drive system (100) may become large.
- the peripheral wall of the case (3) is rotated by utilizing the area that tends to become a dead space between the first peripheral gears (6A, 7A) and the second peripheral gears (6B, 7B) in the axial direction (L).
- a recess (43) is formed in the portion (42), and the oil cooler (22) can be arranged so that at least part of the oil cooler (22) is accommodated in the recess (43). Therefore, the oil cooler (22) can be attached to the outside of the case (3) while suppressing an increase in the size of the vehicle drive system (100).
- an oil passage (24B) connecting the oil pump (20) and the oil cooler (22) is the shaft between the first peripheral gears (6A, 7A) and the second peripheral gears (6B, 7B). It is arranged so as to pass through a region between the direction (L) and overlapping with at least one of the first peripheral gears (6A, 7A) and the second peripheral gears (6B, 7B) when viewed in the axial direction. It is preferable to have
- the oil passage (24B) that connects the oil pump (20) and the oil cooler (22) also has an axis between the first outer gear (6A, 7A) and the second outer gear (6B, 7B). It can be arranged using a region that tends to become a dead space between the directions (L). Therefore, it is easy to reduce the size of the vehicle drive device (100).
- an oil passage (24C) connecting the oil cooler (22) and both the first driving force source (1A) and the second driving force source (1B) is connected to the first peripheral gear (6A, 7A). and the second peripheral gears (6B, 7B) in the axial direction (L), and when viewed in the axial direction, the first peripheral gears (6A, 7A) and the second peripheral gears (6B, 7B ) so as to pass through a region that overlaps with at least one of ).
- the oil passage (24C) connecting the oil cooler (22) and both the first driving force source (1A) and the second driving force source (1B) is connected to the first driving force source (1A ) and the second driving force source (1B) in the axial direction (L) (for example, in the axial direction (L) between the first driving force source (1A) and the second driving force source (1B) It can be formed so as to branch off on both sides in the axial direction (L) from the central portion to reach the first driving force source (1A) and the second driving force source (1B), respectively.
- the length of the oil passage connecting the oil cooler (22) and the first driving force source (1A) is the same as the length of the oil passage connecting the oil cooler (22) and the second driving force source (1B). It is easy to bring them close together, and it is easy to make the pressure losses in these two oil passages even. For example, by shortening the length of these two oil passages to the same extent, the pressure loss in these two oil passages can be reduced to the same extent.
- the first driving force source (1A) is a first rotating electric machine (1A) having a first rotor (12A), and the second driving force source (1B) has a second rotor (12B).
- the first transmission system (T1) includes a first gear (4A) connected to rotate integrally with the first rotor (12A); a first counter gear mechanism (5A) comprising a third gear (51A) meshing with the first gear (4A) and a fourth gear (52A) rotating integrally with the third gear (51A),
- the second transmission system (T2) includes a second gear (4B) connected to rotate integrally with the second rotor (12B), and a fifth gear (51B) meshing with the second gear (4B).
- the second peripheral gear (6B, 7B) is a gear that meshes with the sixth gear (52B)
- the power transmission mechanism (T) is a gear that meshes with the 4th gear (52A).
- the torque of the first rotating electrical machine (1A) transmitted to (6A, 7A) and the torque of the second rotating electrical machine (1B) transmitted to the second outer peripheral gear (6B, 7B) are combined into the first a differential gear mechanism (6) distributed to an output member (2A) and the second output member (2B), wherein the axial direction of the first rotating electric machine (1A) and the differential gear mechanism (6); (L) overlaps, the second rotating electric machine (1B) and the oil pump (20) overlap the arrangement regions in the axial direction (L), and the oil cooler (22) is arranged in the axial direction (L). It is preferable that it is arranged so as to overlap with at least one of the differential gear mechanism (6) and the oil pump (20) when viewed from the direction.
- the first transmission system (T1) and the second transmission system (T2) are configured as described above, from the rotating electric machine (1A, 1B) to the first output member (2A) and the second output member (2B) If an attempt is made to secure a large reduction gear ratio, the diameters of the first peripheral gears (6A, 7A) and the second peripheral gears (6B, 7B) tend to become large.
- the space between the first peripheral gears (6A, 7A) and the second peripheral gears (6B, 7B) in the axial direction (L) tends to be a dead space.
- An oil cooler (22) can be arranged using the area.
- the vehicle drive system (100) can be improved by arranging the oil cooler (22). An increase in size can be suppressed.
- the differential gear mechanism (6) and the oil pump (20) separately on both sides in the axial direction (L) in this manner, one side in the axial direction (L) of the vehicle drive device (100) It is possible to suppress an increase in size compared to the side, and it is easy to make the shape of the vehicle drive device (100) into a shape that is easy to mount on the vehicle.
- the vehicle drive device ( 100) can be easily reduced when viewed in the axial direction.
- the vehicle drive system according to the present disclosure only needs to exhibit at least one of the effects described above.
- 1A first rotating electric machine (first driving force source), 1B: second rotating electric machine (second driving force source), 2A: first output member, 2B: second output member, 3: case, 4A: first Input gear (first gear), 4B: second input gear (second gear), 5A: first counter gear mechanism, 5B: second counter gear mechanism, 6: differential gear mechanism, 6A: first output gear ( first peripheral gear), 6B: second output gear (second peripheral gear), 7A: first differential input gear (first peripheral gear), 7B: second differential input gear (second peripheral gear), 12A : first rotor, 12B: second rotor, 20: oil pump, 22: oil cooler, 24B: second oil passage (oil passage connecting oil pump and oil cooler), 24C: third oil passage (oil cooler and 42: peripheral wall portion; 43: recessed portion; 51A: first counter input gear (third gear); 51B: second counter input gear ( fifth gear), 52A: first counter output gear (fourth gear), 52B: second counter output gear (sixth gear), 100: vehicle driving device, L:
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Abstract
Description
次に、車両用駆動装置のその他の実施形態について説明する。
以下、上記において説明した車両用駆動装置の概要について説明する。
Claims (5)
- 第1駆動力源と、第2駆動力源と、第1車輪に駆動連結される第1出力部材と、第2車輪に駆動連結される第2出力部材と、動力伝達機構と、前記第1駆動力源及び前記第2駆動力源に油を供給するオイルポンプと、前記油を冷却するオイルクーラと、を備えた車両用駆動装置であって、
前記動力伝達機構は、前記第1駆動力源のトルクを少なくとも前記第1出力部材に伝達する第1伝達系と、前記第2駆動力源のトルクを少なくとも前記第2出力部材に伝達する第2伝達系と、を備え、
前記第1駆動力源及び前記第2駆動力源が、第1軸上に配置され、
前記第1出力部材及び前記第2出力部材が、前記第1軸とは異なる第2軸上に配置され、
前記第1軸及び前記第2軸に平行な方向を軸方向とし、前記第2軸上に配置され且つ前記第1伝達系を構成するギヤのうち、前記第2軸を基準とする径方向の最も外側に配置されたギヤを第1外周ギヤとし、前記第2軸上に配置され且つ前記第2伝達系を構成するギヤのうち、前記径方向の最も外側に配置されたギヤを第2外周ギヤとして、
前記第1外周ギヤと前記第2外周ギヤとが、前記軸方向に離間して配置され、
前記オイルクーラは、前記第1外周ギヤと前記第2外周ギヤとの前記軸方向の間であって、前記軸方向に沿う軸方向視で前記第1外周ギヤ及び前記第2外周ギヤの少なくとも一方と重複するように配置されている、車両用駆動装置。 - 前記第1駆動力源、前記第2駆動力源、前記第1出力部材、前記第2出力部材、及び前記動力伝達機構を収容するケースを更に備え、
前記ケースは、前記第1外周ギヤ及び前記第2外周ギヤに対して前記径方向の外側を覆う周壁部を備え、
前記周壁部の一部であって、前記軸方向で前記第1外周ギヤと前記第2外周ギヤとの間の部分には、前記径方向の内側に窪む凹部が形成され、
前記オイルクーラの少なくとも一部が、前記凹部に収まるように配置されている、請求項1に記載の車両用駆動装置。 - 前記オイルポンプと前記オイルクーラとを結ぶ油路が、前記第1外周ギヤと前記第2外周ギヤとの前記軸方向の間であって、前記軸方向視で前記第1外周ギヤ及び前記第2外周ギヤの少なくとも一方と重複する領域を通るように配置されている、請求項1又は2に記載の車両用駆動装置。
- 前記オイルクーラと前記第1駆動力源及び前記第2駆動力源の双方とを結ぶ油路が、前記第1外周ギヤと前記第2外周ギヤとの前記軸方向の間であって、前記軸方向視で前記第1外周ギヤ及び前記第2外周ギヤの少なくとも一方と重複する領域を通るように配置されている、請求項1から3のいずれか一項に記載の車両用駆動装置。
- 前記第1駆動力源は、第1ロータを備えた第1回転電機であり、
前記第2駆動力源は、第2ロータを備えた第2回転電機であり、
前記第1伝達系は、前記第1ロータと一体的に回転するように連結された第1ギヤと、前記第1ギヤに噛み合う第3ギヤ及び当該第3ギヤと一体的に回転する第4ギヤを備えた第1カウンタギヤ機構と、を含み、
前記第2伝達系は、前記第2ロータと一体的に回転するように連結された第2ギヤと、前記第2ギヤに噛み合う第5ギヤ及び当該第5ギヤと一体的に回転する第6ギヤを備えた第2カウンタギヤ機構と、を含み、
前記第1外周ギヤは、前記第4ギヤに噛み合うギヤであり、
前記第2外周ギヤは、前記第6ギヤに噛み合うギヤであり、
前記動力伝達機構は、前記第1外周ギヤに伝達された前記第1回転電機のトルクと前記第2外周ギヤに伝達された前記第2回転電機のトルクとを、前記第1出力部材と前記第2出力部材とに分配する差動歯車機構を備え、
前記第1回転電機と前記差動歯車機構との前記軸方向における配置領域が重複し、
前記第2回転電機と前記オイルポンプとの前記軸方向における配置領域が重複し、
前記オイルクーラは、前記軸方向視で前記差動歯車機構及び前記オイルポンプの少なくとも一方と重複するように配置されている、請求項1から4のいずれか一項に記載の車両用駆動装置。
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EP22780697.3A EP4318898A1 (en) | 2021-03-30 | 2022-03-28 | Drive device for vehicle |
US18/552,462 US20240175488A1 (en) | 2021-03-30 | 2022-03-28 | Vehicle drive device |
CN202280024927.1A CN117063001A (zh) | 2021-03-30 | 2022-03-28 | 车用驱动装置 |
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WO2012169542A1 (ja) * | 2011-06-07 | 2012-12-13 | 本田技研工業株式会社 | 車両用駆動装置 |
JP2018155327A (ja) | 2017-03-17 | 2018-10-04 | Ntn株式会社 | 車両駆動装置 |
JP2020178485A (ja) * | 2019-04-19 | 2020-10-29 | 日本電産株式会社 | モータユニット |
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WO2012169542A1 (ja) * | 2011-06-07 | 2012-12-13 | 本田技研工業株式会社 | 車両用駆動装置 |
JP2018155327A (ja) | 2017-03-17 | 2018-10-04 | Ntn株式会社 | 車両駆動装置 |
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