US20220123628A1 - Motor unit - Google Patents

Motor unit Download PDF

Info

Publication number
US20220123628A1
US20220123628A1 US17/431,425 US202017431425A US2022123628A1 US 20220123628 A1 US20220123628 A1 US 20220123628A1 US 202017431425 A US202017431425 A US 202017431425A US 2022123628 A1 US2022123628 A1 US 2022123628A1
Authority
US
United States
Prior art keywords
motor
housing
supply pipe
oil
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US17/431,425
Other languages
English (en)
Inventor
Shuhei Nakamatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Corp
Original Assignee
Nidec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nidec Corp filed Critical Nidec Corp
Assigned to NIDEC CORPORATION reassignment NIDEC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NAKAMATSU, Shuhei
Publication of US20220123628A1 publication Critical patent/US20220123628A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • 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
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/10—Electrical machine types
    • B60L2220/14—Synchronous machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/52—Drive Train control parameters related to converters
    • B60L2240/525—Temperature of converter or components thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a motor unit.
  • a structure including a breather mechanism for adjusting pressure in a motor housing is known.
  • a motor case in which a communicating path leading to a motor chamber is provided in a channel leading from a gear chamber to a breather mechanism. According to such a configuration, it is possible to suppress hydraulic oil from leaking from a breather device.
  • a motor unit of the present invention includes: a motor having a rotor that rotates about a motor axis and a stator located radially outside the rotor; a housing having a motor housing portion that houses the motor; and a refrigerant channel that is arranged to pass through the interior of the housing and circulate a refrigerant.
  • a core back portion of the stator has a plurality of fixing portions that are arranged to project radially outward from an outer peripheral surface and extend along an axial direction, and are fixed to the housing.
  • the plurality of fixing portions include an upper fixing portion arranged to project upward from the outer peripheral surface of the core back portion.
  • the refrigerant channel includes a supply portion that feeds the refrigerant to the outer peripheral surface of the core back portion.
  • the supply portion is located on a side portion of the upper fixing portion in a circumferential direction.
  • the housing is provided with a breather portion that is located above the upper fixing portion and allows the interior of the motor housing portion and the outside of the housing to communicate.
  • FIG. 1 is a conceptual configuration diagram schematically illustrating a motor unit according to one embodiment
  • FIG. 2 is a perspective view illustrating a stator and a supply pipe unit according to one embodiment
  • FIG. 3 is a partial cross-sectional view of a motor unit 1 according to one embodiment.
  • FIG. 4 is a top view illustrating the stator and the supply pipe unit according to one embodiment.
  • a description will be given by defining a vertical direction based on a positional relationship when a motor unit 1 according to an embodiment of the invention is mounted on a vehicle (not illustrated) located on a horizontal road surface.
  • an xyz coordinate system is shown appropriately as a three-dimensional orthogonal coordinate system.
  • a z-axis direction corresponds to the vertical direction.
  • a +z side corresponds to an upper side in the vertical direction, while a ⁇ z side corresponds to a lower side in the vertical direction.
  • the upper side in the vertical direction and the lower side in the vertical direction will be referred to simply as the “upper side” and the “lower side”, respectively.
  • An x-axis direction is a direction orthogonal to the z-axis direction and is a front-rear direction of the vehicle on which the motor unit 1 is mounted.
  • a +x side is a front side of the vehicle
  • a ⁇ x side is a rear side of the vehicle.
  • a y-axis direction corresponds to a left-right direction of the vehicle, i.e., a width direction of the vehicle, and is a direction perpendicular to both the x-axis direction and the z-axis direction.
  • a +y side is a left side of the vehicle
  • a ⁇ y side is a right side of the vehicle.
  • the y-axis direction corresponds to an axial direction of a motor axis J 1 to be described later.
  • Each of the front-rear direction and the left-right direction is a horizontal direction perpendicular to the vertical direction.
  • the left side corresponds to one side in an axial direction
  • the right side corresponds to the other side in the axial direction.
  • the front side corresponds to one side in the horizontal direction
  • the rear side corresponds to the other side in the horizontal direction.
  • the positional relationship in the front-rear direction is not limited to the positional relationship in the present embodiment, and the +x side may be the rear side of the vehicle, and the ⁇ x side may be the front side of the vehicle.
  • the +y side corresponds to the right side of the vehicle, while the ⁇ y side corresponds to the left side of the vehicle.
  • the motor axis J 1 illustrated appropriately in the drawings extends in the y-axis direction, i.e., the left-right direction of the vehicle.
  • a direction parallel to the motor axis J 1 is simply referred to as the “axial direction”
  • a radial direction having its center on the motor axis J 1 is simply referred to as the “radial direction”
  • a circumferential direction having its center on the motor axis J 1 that is, the axial circumference of the motor axis J 1 , is simply referred to as the “circumferential direction” unless otherwise noted.
  • one side in the axial direction ((i.e., +y side) is a direction from a motor housing portion 61 to a gear housing portion 62 of a housing 6 , which will be described later, in the axial direction.
  • the other side in the axial direction (i.e., ⁇ y side) is a direction from the gear housing portion 62 to the motor housing portion 61 in the axial direction.
  • the “parallel direction” also includes a substantially parallel direction
  • the “perpendicular direction” also includes a substantially perpendicular direction.
  • FIG. 1 is a conceptual diagram schematically illustrating the motor unit 1 .
  • the motor unit 1 of the present embodiment is mounted on a vehicle using a motor as a motive power source, such as a hybrid electric vehicle (HEV), a plug-in hybrid vehicle (PHV), and an electric vehicle (EV), and is used as the motive power source.
  • a motor as a motive power source, such as a hybrid electric vehicle (HEV), a plug-in hybrid vehicle (PHV), and an electric vehicle (EV), and is used as the motive power source.
  • HEV hybrid electric vehicle
  • PWD plug-in hybrid vehicle
  • EV electric vehicle
  • the motor unit 1 includes a motor 2 , a gear portion 3 including a reduction gear 4 and a differential 5 , the housing 6 , and an oil passage (refrigerant channel) 90 .
  • the oil passage 90 includes a pump 96 , a cooler 97 , a first supply pipe (supply portion) 11 , and a second supply pipe (supply portion) 12 . Note that the first supply pipe 11 and the second supply pipe 12 form a part of a supply pipe unit 10 .
  • the housing 6 includes the motor housing portion 61 that houses the motor 2 , the gear housing portion 62 that houses the gear portion 3 , a partition 61 c that partitions the interior of the motor housing portion 61 and the interior of the gear housing portion 62 in the axial direction, and a breather portion 70 .
  • the gear housing portion 62 is arranged to the left side ((i.e., +y side) of the motor housing portion 61 .
  • a bottom portion 61 s of the motor housing portion 61 is located higher than a bottom portion 62 a of the gear housing portion 62 .
  • the partition 61 c includes a partition opening 68 defined therein.
  • the partition opening 68 is arranged to join the interior of the motor housing portion 61 and the interior of the gear housing portion 62 to each other.
  • the partition 61 c is located on the left side of the stator 30 .
  • Oil O as a refrigerant is housed in the interior of the housing 6 .
  • the refrigerant is the oil O.
  • the oil O (refrigerant) is housed in the interior of the motor housing portion 61 and the interior of the gear housing portion 62 .
  • An oil pool P i.e., a pool of the oil O, is arranged in a lower region in the interior of the gear housing portion 62 .
  • the oil O in the oil pool P is sent to the interior of the motor housing portion 61 through the oil passage 90 .
  • the oil O sent to the interior of the motor housing portion 61 is gathered in a lower region in the interior of the motor housing portion 61 . At least a portion of the oil O gathered in the interior of the motor housing portion 61 travels into the gear housing portion 62 through the partition opening 68 to return to the oil pool P.
  • the oil O is arranged to circulate through the oil passage 90 , which will be described below.
  • the oil O functions not only for cooling the motor 2 but also for lubricating the gear portion 3 .
  • An oil equivalent to a lubricating oil (ATF: Automatic Transmission Fluid) for an automatic transmission having a relatively low viscosity is preferably used as the oil O so that the oil O can perform functions of a lubricating oil and a cooling oil.
  • the motor 2 is an inner-rotor motor.
  • the motor 2 includes a rotor 20 , the stator 30 , and a plurality of bearings 26 and 27 .
  • the rotor 20 is arranged to be capable of rotating about the motor axis J 1 , which extends in the horizontal direction.
  • the rotor 20 includes a shaft 21 and a rotor body 24 .
  • the rotor body 24 includes a rotor core, and a rotor magnet fixed to the rotor core. A torque of the rotor 20 is transferred to the gear portion 3 .
  • the shaft 21 is arranged to extend in the axial direction with the motor axis J 1 as a center.
  • the shaft 21 is arranged to rotate about the motor axis J 1 .
  • the shaft 21 is a hollow shaft including a hollow portion 22 defined therein.
  • the shaft 21 includes a communicating hole 23 defined therein.
  • the communicating hole 23 is arranged to extend in a radial direction to join the hollow portion 22 to a space outside of the shaft 21 .
  • the shaft 21 is arranged to extend over the interior of the motor housing portion 61 and the interior of the gear housing portion 62 of the housing 6 .
  • An end portion of the shaft 21 on the left side is arranged to project into the interior of the gear housing portion 62 .
  • a first gear 41 which will be described below, of the gear portion 3 is fixed to the end portion of the shaft 21 on the left side.
  • the shaft 21 is rotatably supported by the bearings 26 and 27 .
  • the stator 30 is arranged radially opposite to the rotor 20 with a gap therebetween.
  • the stator 30 is located radially outside the rotor 20 .
  • An outer peripheral surface of the stator 30 opposes an inner peripheral surface of the housing 6 .
  • the stator 30 includes a stator core 32 and a coil assembly 33 .
  • the stator core 32 is fixed to an inner surface of the motor housing portion 61 .
  • FIG. 2 is a perspective view illustrating the stator 30 and the supply pipe unit 10 located above the stator 30 .
  • the stator core 32 includes a cylindrical core back portion 32 d arranged to extend in the axial direction, and a plurality of tooth portions 32 e arranged to extend radially inward from the core back portion 32 d.
  • the plurality of tooth portions 32 e are arranged at intervals in the circumferential direction.
  • the plurality of tooth portions 32 e are arranged at regular intervals over the entire circumference in the circumferential direction.
  • the core back portion 32 d has a plurality of fixing portions 32 b projecting radially outward from an outer peripheral surface.
  • the fixing portion 32 b is fixed to the inner surface of the motor housing portion 61 . That is, the stator 30 is fixed to the housing 6 at the fixing portion 32 b.
  • a plurality of the fixing portions 32 b are provided at intervals in the circumferential direction.
  • the number of fixing portions 32 b is, for example, four.
  • the four fixing portions 32 b are arranged at regular intervals over the entire circumference in the circumferential direction.
  • the fixing portion 32 b is arranged to extend along the axial direction.
  • the fixing portion 32 b is arranged to extend, for example, from an end portion of the stator core 32 on the left side (i.e., the +y side) to an end portion of the stator core 32 on the right side (i.e., the ⁇ y side). That is, the fixing portion 32 b is arranged to extend over the entire length of the stator core 32 in the axial direction.
  • the fixing portion 32 b includes a through hole 32 c arranged to pass through the fixing portion 32 b in the axial direction.
  • a bolt (not illustrated), which is arranged to extend in the axial direction, is inserted into the through hole 32 c.
  • the bolt is arranged to pass through the through hole 32 c from the right side (i.e., ⁇ y side) and is screwed into a female screw hole (not illustrated) provided on the inner surface of the motor housing portion 61 .
  • the fixing portion 32 b is fixed to the motor housing portion 61 .
  • one of the plurality of (four in the present embodiment) fixing portions 32 b projecting upward from the outer peripheral surface of the core back portion 32 d is referred to as an upper fixing portion 35 . That is, one of the plurality of fixing portions 32 b includes the upper fixing portion 35 . Note that the other fixing portions 32 b project downward, forward (i.e., +x side), and backward (i.e., ⁇ x side), respectively.
  • the coil assembly 33 includes a plurality of coils 31 attached to the stator core 32 .
  • the plurality of coils 31 are respectively mounted on the tooth portions 32 e of the stator core 32 with an insulator (not illustrated) therebetween.
  • the plurality of coils 31 are arranged side by side in the circumferential direction.
  • the plurality of coils 31 are arranged at regular intervals over the entire circumference in the circumferential direction.
  • the coil assembly 33 may include a binding member or the like which is used to bind the coils 31 together, and may include a passage line arranged to join the coils 31 to one another.
  • the coil assembly 33 includes a pair of coil ends 33 a and 33 b each of which is arranged to project in the axial direction from the stator core 32 .
  • the coil end 33 a is a portion of the coil assembly 33 that projects to the right side (i.e., ⁇ y side) from the stator core 32 .
  • the coil end 33 b is a portion of the coil assembly 33 that projects to the left side (i.e., +y side) from the stator core 32 .
  • the coil end 33 a includes a portion of each of the coils 31 included in the coil assembly 33 which projects on the right side of the stator core 32 .
  • the coil end 33 b includes a portion of each of the coils 31 included in the coil assembly 33 which projects on the left side of the stator core 32 .
  • each of the coil ends 33 a and 33 b is in the shape of a circular ring, and is centered on the motor axis J 1 in the present preferred embodiment.
  • each of the coil ends 33 a and 33 b may include a binding member or the like which is used to bind the coils 31 together, and may include a passage line arranged to join the coils 31 to one another.
  • the bearings 26 and 27 are arranged to rotatably support the rotor 20 .
  • Each of the bearings 26 and 27 is, for example, a ball bearing.
  • the bearing 26 is a bearing arranged to rotatably support a portion of the rotor 20 which is located on the right side of the stator core 32 .
  • the bearing 26 is arranged to support a portion of the shaft 21 which is located on the right side of a portion of the shaft 21 to which the rotor body 24 is fixed.
  • the bearing 26 is held by a wall portion 61 b of the motor housing portion 61 which covers the right side of the rotor 20 and the stator 30 .
  • the wall portion 61 b forms a part of the wall portion of the housing 6 and closes an opening on the right side of the motor housing portion 61 .
  • the bearing 27 is a bearing arranged to rotatably support a portion of the rotor 20 which is located on the left side of the stator core 32 .
  • the bearing 27 is arranged to support a portion of the shaft 21 which is located on the left side of the portion of the shaft 21 to which the rotor body 24 is fixed.
  • the bearing 27 is held by the partition 61 c.
  • the gear portion 3 is housed in the gear housing portion 62 of the housing 6 .
  • the gear portion 3 is connected to the motor 2 .
  • the gear portion 3 is connected to the end portion of the shaft 21 on the left side.
  • the gear portion 3 includes the reduction gear 4 and the differential 5 . A torque outputted from the motor 2 is transferred to the differential 5 through the reduction gear 4 .
  • the reduction gear 4 is connected to the motor 2 .
  • the reduction gear 4 is arranged to increase the torque outputted from the motor 2 in accordance with a reduction ratio while reducing the rotation speed of the motor 2 .
  • the reduction gear 4 is arranged to transfer the torque outputted from the motor 2 to the differential 5 .
  • the reduction gear 4 includes the first gear 41 , a second gear 42 , a third gear 43 , and an intermediate shaft 45 .
  • the first gear 41 is fixed to an outer circumferential surface of the end portion of the shaft 21 on the left side.
  • the first gear 41 is arranged to rotate about the motor axis J 1 together with the shaft 21 .
  • the intermediate shaft 45 is arranged to extend along an intermediate axis J 2 parallel to the motor axis J 1 .
  • the intermediate shaft 45 is arranged to rotate about the intermediate axis J 2 .
  • the second gear 42 and the third gear 43 are fixed to an outer peripheral surface of the intermediate shaft 45 at intervals in the axial direction.
  • the second gear 42 and the third gear 43 are connected to each other through the intermediate shaft 45 .
  • Each of the second gear 42 and the third gear 43 is arranged to rotate about the intermediate axis J 2 .
  • the second gear 42 is arranged to mesh with the first gear 41 .
  • the third gear 43 is arranged to mesh with a ring gear 51 , which will be described below, of the differential 5 .
  • the torque outputted from the motor 2 is transferred to the ring gear 51 of the differential 5 through, in order, the shaft 21 , the first gear 41 , the second gear 42 , the intermediate shaft 45 , and the third gear 43 .
  • the number of gears, the gear ratios of the gears, and the like can be modified appropriately in accordance with a desired reduction ratio.
  • the reduction gear 4 is a speed reducer of a parallel-axis gearing type, in which center axes of gears are arranged in parallel with each other.
  • the differential 5 is connected to the motor 2 through the reduction gear 4 .
  • the differential 5 is a device arranged to transfer the torque outputted from the motor 2 to wheels of the vehicle.
  • the differential 5 is arranged to transfer the same torque to axles 55 of left and right wheels while absorbing a difference in speed between the left and right wheels when the vehicle is turning.
  • the gear portion 3 is arranged to transfer the torque of the motor 2 to the axles 55 of the vehicle through the reduction gear 4 and the differential 5 in the present preferred embodiment.
  • the differential 5 includes the ring gear 51 , a gear housing (not shown), a pair of pinion gears (not shown), a pinion shaft (not shown), and a pair of side gears (not shown).
  • the ring gear 51 is arranged to rotate about a differential axis J 3 parallel to the motor axis J 1 .
  • the torque outputted from the motor 2 is transferred to the ring gear 51 through the reduction gear 4 .
  • oil passage refers to a channel of an oil.
  • the concept of “oil passage” includes not only a “flow passage”, in which a steady flow of an oil in one direction is generated, but also a channel in which the oil is allowed to temporarily stay, and a channel along which the oil drips. Examples of the channel in which the oil is allowed to temporarily stay include a reservoir arranged to store the oil.
  • the oil passage 90 includes a first oil passage 91 and a second oil passage 92 .
  • Each of the first oil passage 91 and the second oil passage 92 is arranged to circulate the oil O in the interior of the housing 6 .
  • Each of the first oil passage 91 and the second oil passage 92 is a channel along which the oil O is fed from the oil pool P to the motor 2 and back into the oil pool P.
  • the oil O drips from the motor 2 to be gathered in a lower region of the motor housing portion 61 .
  • the oil O gathered in the lower region of the motor housing portion 61 is transferred to a lower region of the gear housing portion 62 (i.e., the oil pool P) through the partition opening 68 .
  • the first oil passage 91 and the second oil passage 92 include paths for transferring the oil O from the lower region in the motor housing portion 61 to the lower region in the gear housing portion 62 .
  • the first oil passage 91 includes a scraping-up channel 91 a, a shaft feed channel 91 b, an intra-shaft channel 91 c, and an intra-rotor channel 91 d.
  • a reservoir 93 is arranged in the channel of the first oil passage 91 .
  • the reservoir 93 is arranged in the interior of the gear housing portion 62 .
  • the scraping-up channel 91 a is a channel along which the oil O is scraped up from the oil pool P by rotation of the ring gear 51 of the differential 5 to be received by the reservoir 93 .
  • the reservoir 93 is arranged to open upward.
  • the reservoir 93 receives a portion of the oil O which has been scraped up by the ring gear 51 .
  • the reservoir 93 also receives portions of the oil O which have been scraped up by the second gear 42 and the third gear 43 in addition to the ring gear 51 when, for example, a liquid surface S of the oil pool P is at a high level, e.g., immediately after the motor 2 is driven.
  • the oil O scraped up by the ring gear 51 is fed to each gear of the gear portion 3 and spreads over a tooth surface of the gear.
  • the oil passage 90 passes through the interior of the gear housing portion 62 .
  • the shaft feed channel 91 b is a channel arranged to lead the oil O from the reservoir 93 into the hollow portion 22 of the shaft 21 .
  • the intra-shaft channel 91 c is a channel along which the oil O passes in the hollow portion 22 of the shaft 21 .
  • the intra-rotor channel 91 d is a channel along which the oil O passes through the communicating hole 23 of the shaft 21 and an interior of the rotor body 24 , and is scattered to the stator 30 .
  • a centrifugal force acts on the oil O in the interior of the rotor 20 due to the rotation of the rotor 20 .
  • the oil O is continuously scattered radially outward from the rotor 20 .
  • the scattering of the oil O generates a negative pressure in a channel in the interior of the rotor 20 , causing the oil O gathered in the reservoir 93 to be sucked into the interior of the rotor 20 , so that the channel in the interior of the rotor 20 is filled with the oil O.
  • a portion of the oil O which has reached the stator 30 absorbs heat from the stator 30 .
  • the second oil passage 92 In the second oil passage 92 , the oil O is lifted from the oil pool P, and is fed to the stator 30 .
  • the second oil passage 92 is provided with the pump 96 , the cooler 97 , and the supply pipe unit 10 .
  • the second oil passage 92 includes a first flow passage 92 a, a second flow passage 92 b, a third flow passage 92 c, a fourth flow passage 94 , a supply pipe internal flow passage 92 d, and jet holes 14 .
  • the fourth flow passage 94 is provided in a wall portion or the partition 61 c of the motor housing portion 61 .
  • the fourth flow passage 94 is connected to the first supply pipe 11 and the second supply pipe 12 of the supply pipe unit 10 . That is, the fourth flow passage 94 is arranged to join the third flow passage 92 c and the supply pipe unit 10 .
  • the fourth flow passage 94 is arranged to extend in the horizontal direction from a portion connected to the third flow passage 92 c toward the rear side (i.e., ⁇ x side).
  • the supply pipe unit 10 is arranged between an inner peripheral surface 61 a of the motor housing portion 61 and the outer peripheral surface of the stator 30 .
  • the supply pipe unit 10 is located above the stator 30 .
  • An end portion on the left side (i.e., +y side) of the supply pipe unit 10 is fixed to the wall portion or the partition 61 c of the motor housing portion 61 .
  • the end portion on the left side of the supply pipe unit 10 is connected to the fourth flow passage 94 .
  • An end portion on the right side (i.e., ⁇ y side) of the supply pipe unit 10 is fixed to a top wall portion or the wall portion 61 b of the motor housing portion 61 . That is, the supply pipe unit 10 is fixed to the housing 6 .
  • the supply pipe internal flow passage 92 d is a flow passage of the refrigerant arranged in the interior of the supply pipe unit 10 . More specifically, the supply pipe internal flow passage 92 d is located in each of the interior of the first supply pipe 11 and the interior of the second supply pipe 12 of the supply pipe unit 10 . Therefore, the second oil passage 92 is provided with the pair of supply pipe internal flow passages 92 d. The supply pipe internal flow passage 92 d is arranged to extend in the axial direction. In addition, the pair of supply pipe internal flow passages 92 d is connected to the fourth flow passage 94 .
  • the first supply pipe 11 and the second supply pipe 12 have a pipe shape extending in the axial direction.
  • the first supply pipe 11 and the second supply pipe 12 are connected to each other by a connecting portion 19 located at the end portion on the right side (i.e., ⁇ y side). That is, the supply pipe unit 10 includes the first supply pipe 11 , the second supply pipe 12 , and the connecting portion 19 that connects the first supply pipe 11 and the second supply pipe 12 .
  • ribs for reinforcing the supply pipe unit 10 are provided between the first supply pipe 11 and the connecting portion 19 and between the second supply pipe 12 and the connecting portion 19 .
  • the upper fixing portion 35 is arranged between the first supply pipe 11 and the second supply pipe 12 . That is, the first supply pipe 11 and the second supply pipe 12 are arranged to extend along the axial direction on both side portions of the upper fixing portion 35 in the circumferential direction.
  • an imaginary straight line (not illustrated) passing through a central axis of the first supply pipe 11 and a central axis of the second supply pipe 12 intersects with the upper fixing portion 35 .
  • the first supply pipe 11 and the second supply pipe 12 are located on the side portions of the upper fixing portion 35 in the circumferential direction.
  • the first supply pipe 11 is located on one side of the upper fixing portion 35 in the circumferential direction
  • the second supply pipe 12 is located on the other side of the upper fixing portion 35 in the circumferential direction.
  • FIG. 4 is a top view illustrating the stator and the supply pipe unit.
  • the first supply pipe 11 is located on the front side (i.e., +x side) of the upper fixing portion 35
  • the second supply pipe 12 is located on the rear side (i.e., ⁇ x side) of the upper fixing portion 35 .
  • the first supply pipe 11 and the second supply pipe 12 have the plurality of jet holes 14 penetrating peripheral walls thereof. As illustrated in FIG. 3 , the jet holes 14 are arranged to extend in a pipe radial direction perpendicular to the central axis of the first supply pipe 11 or the second supply pipe 12 , and allows the interior and the outside of the pipe to communicate.
  • the jet hole 14 has, for example, a circular hole shape.
  • the jet hole 14 is located between the inner peripheral surface of the housing 6 and the outer peripheral surface of the stator 30 . The jet hole 14 jets the oil O flowing through the supply pipe internal flow passage 92 d to the motor 2 .
  • the plurality of jet holes 14 are arranged at intervals in the axial direction in the first supply pipe 11 and the second supply pipe 12 .
  • the stator 30 can be cooled in a wide range in the axial direction by the oil O jetted from the plurality of jet holes 14 arranged in the axial direction.
  • the two second jet holes 14 b are arranged at both end portions, and the four first jet holes 14 a are arranged side by side at regular intervals in the axial direction between the two second jet holes 14 b.
  • Axial positions of the first jet hole 14 a overlap an axial position of the stator core 32 .
  • axial positions of the second jet holes 14 b overlap axial positions of the coil ends 33 a and 33 b.
  • One of the two second jet holes 14 b located on the right side opposes the coil end 33 a on the right side.
  • the other of the two second jet holes 14 b located on the left side opposes the coil end 33 b on the left side.
  • the first jet hole 14 a is open toward the opposite side of the upper fixing portion 35 and downward in the first supply pipe 11 and the second supply pipe 12 . That is, the first jet hole 14 a is open toward an outer peripheral surface of the core back portion 32 d and a region opposite to the upper fixing portion 35 .
  • an imaginary line VL connecting the first supply pipe 11 and the motor axis J 1 is assumed, and the first jet hole 14 a faces a region opposite to a region where the upper fixing portion 35 is located with the imaginary line VL as a boundary.
  • the first jet hole 14 a jets the oil O to the outer peripheral surface of the core back portion 32 d.
  • the oil O jetted to the core back portion 32 d drips after cooling the core back portion 32 d while flowing along the outer peripheral surface of the core back portion 32 d, and is gathered in the lower region in the motor housing portion 61 .
  • the first jet hole 14 a is open toward the opposite side of the upper fixing portion 35 and downward, the first jet hole 14 a is open to a region opposite to the breather portion 70 , so that it is possible to suppress the oil O from leaking from the breather portion 70 .
  • first jet hole 14 a may be open toward the motor axis J 1 as another embodiment.
  • the second jet hole 14 b is open toward the opposite side of the upper fixing portion 35 and downward.
  • the second jet hole 14 b provided on the right side (i.e., ⁇ y side) between the plurality of second jet holes 14 b feeds the oil O to the coil end 33 a on the right side.
  • the second jet hole 14 b provided on the left side (i.e., +y side) jets the oil O to the coil end 33 b on the left side.
  • the oil O jetted from the second jet hole 14 b is fed from the upper side to the coil ends 33 a and 33 b, cools the coil end 33 a, and then, drips to be gathered in the lower region in the motor housing portion 61 .
  • the housing 6 is provided with the breather portion 70 .
  • the breather portion 70 allows the interior of the motor housing portion 61 and the outside of the housing 6 to communicate and adjusts the internal pressure of the motor housing portion 61 . More specifically, the oil O is sealed in the housing 6 of the motor unit 1 in order to lubricate the reduction gear 4 , the differential 5 , and the respective bearings and cool the motor 2 by an axial oil feeding system or an oil bath lubrication system, and the breather portion 70 adjusts the internal pressure in the housing 6 so that the oil O does not leak from the housing 6 when the internal pressure in the housing 6 increases due to an increase in temperature in the housing 6 during operation.
  • the breather portion 70 includes a vent portion 71 that allows the interior and the outside of the motor housing portion 61 to communicate, and a pipe 72 attached to the vent portion 71 .
  • the vent portion 71 is a circular hole.
  • the vent portion 71 is arranged to extend linearly along the vertical direction.
  • the pipe 72 is inserted into the vent portion 71 . Both ends of the pipe 72 are open and connect the interior of the vent portion 71 and the outside of the housing 6 .
  • the pipe 72 has an L shape including a first portion 72 a and a second portion 72 b bent with respect to the first portion 72 a.
  • the first portion 72 a is a portion inserted into the vent portion 71 from above.
  • the first portion 72 a is arranged to extend in the vertical direction around a central axis J 4 .
  • the second portion 72 b is arranged to extend from an end portion on the upper side of the first portion 72 a in a direction perpendicular to the vertical direction.
  • the second portion 72 b is located outside the housing 6 .
  • a hose (not illustrated) may be provided at a distal end portion of the second portion 72 b.
  • a filter may be provided at a distal end of the hose.
  • the motor 2 is surrounded by the inner peripheral surface 61 a of the motor housing portion 61 from the radially outside.
  • the inner peripheral surface 61 a of the motor housing portion 61 has a substantially circular shape centered on the motor axis J 1 .
  • the inner peripheral surface 61 a of the motor housing portion 61 is provided with a plurality of recessed portions 61 k in which the fixing portions 32 b are housed.
  • the recessed portion 61 k is recessed radially outward.
  • the recessed portion 61 k is arranged to extend along the axial direction.
  • the core back portion 32 d is provided with the four fixing portions 32 b. Therefore, the inner peripheral surface 61 a of the motor housing portion 61 is provided with four recessed portions 61 k.
  • a slight gap is provided between an inner surface of the recessed portion 61 k and an outer surface of the fixing portion 32 b housed in the recessed portion 61 k.
  • the recessed portion 61 k that houses the upper fixing portion 35 among the four recessed portions 61 k is referred to as an upper recessed portion 65 .
  • the vent portion 71 of the breather portion 70 is open in the upper recessed portion 65 .
  • a recess is further formed from an inner peripheral surface of the upper recessed portion 65 , and the opening of the vent portion 71 is formed on a bottom surface thereof. That is, the breather portion 70 is open into the motor housing portion 61 in the upper recessed portion 65 .
  • the breather portion 70 is located above the upper fixing portion 35 housed in the upper recessed portion 65 .
  • the opening of the vent portion 71 is located at the top (i.e., the highest portion) of the inner surface of the upper recessed portion 65 .
  • the breather portion 70 is arranged so as to overlap the upper fixing portion 35 when viewed in the vertical direction. That is, the breather portion 70 is located immediately above the upper fixing portion 35 .
  • an axial position of the opening of the breather portion 70 in the motor housing portion 61 is substantially an intermediate position of the stator 30 , and is arranged to be shifted from the axial positions of the jet holes 14 of the first supply pipe 11 and the second supply pipe 12 .
  • the inner peripheral surface 61 a of the motor housing portion 61 is provided with a supply pipe housing recessed portion 61 p in which the supply portion (the first supply pipe 11 or the second supply pipe 12 ) is housed.
  • the inner peripheral surface 61 a of the present embodiment is provided with two supply pipe housing recessed portions 61 p corresponding to the two supply portions (the first supply pipe 11 and the second supply pipe 12 ).
  • the two supply pipe housing recessed portions 61 p are arranged on both sides of the upper recessed portion 65 in the circumferential direction.
  • the first supply pipe 11 is housed in one of the two supply pipe housing recessed portions 61 p, and the second supply pipe 12 is housed in the other.
  • the breather portion 70 is located above the upper fixing portion 35 in the present embodiment.
  • the upper fixing portion 35 projects upward with respect to the outer peripheral surface of the core back portion 32 d. Therefore, according to the present embodiment, the opening of the breather portion 70 can be separated from the channel through which the oil O flows, and the oil O can be prevented from leaking from the breather portion 70 .
  • first supply pipe 11 and the second supply pipe 12 are located on the side portions of the upper fixing portion 35 in the circumferential direction according to the present embodiment.
  • the oil O supplied from the first supply pipe 11 and the second supply pipe 12 to the outer peripheral surface of the core back portion 32 d is blocked by the upper fixing portion 35 and hardly reaches the opening of the breather portion 70 .
  • the oil O can be prevented from leaking from the breather portion 70 .
  • the supply portion that supplies the oil P to the motor 2 is the pipe-shaped supply pipe (the first supply pipe 11 and the second supply pipe 12 ) having the jet hole 14 . Since the supply portion is formed into the pipe shape, the pressure of the oil O in the flow passage can be increased, and the flow velocity of the oil jetted from the jet hole 14 can be increased. As a result, the oil O can be scattered into a wide range from the jet hole 14 , and a wide range of the surface of the motor 2 can be cooled in a well-balanced manner.
  • the first jet hole 14 a is open toward the outer peripheral surface of the core back portion 32 d and the region opposite to the upper fixing portion 35 . That is, the oil O jetted from the first jet hole 14 a is jetted toward the opposite side of the breather portion 70 . Therefore, the oil O jetted from the first jet hole 14 a hardly enters the opening of the breather portion 70 , and the oil O can be prevented from leaking from the breather portion 70 .
  • the breather portion 70 is open into the motor housing portion 61 in the upper recessed portion 65 in which the upper fixing portion 35 is housed.
  • the oil O does not reach the opening of the breather portion 70 unless the oil O passes through the gap between the inner surface of the upper recessed portion 65 and the outer surface of the upper fixing portion 35 . That is, according to the present embodiment, the oil O hardly enters the opening of the breather portion 70 , and the leakage of the oil O from the breather portion 70 can be suppressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Motor Or Generator Frames (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Arrangement Of Transmissions (AREA)
  • Inverter Devices (AREA)
  • Motor Power Transmission Devices (AREA)
  • Hybrid Electric Vehicles (AREA)
US17/431,425 2019-03-06 2020-01-10 Motor unit Abandoned US20220123628A1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2019-040863 2019-03-06
JP2019040863 2019-03-06
JP2019-075237 2019-04-11
JP2019075237 2019-04-11
JP2019-110648 2019-06-13
JP2019110648 2019-06-13
PCT/JP2020/000652 WO2020179216A1 (ja) 2019-03-06 2020-01-10 モータユニット

Publications (1)

Publication Number Publication Date
US20220123628A1 true US20220123628A1 (en) 2022-04-21

Family

ID=72337249

Family Applications (4)

Application Number Title Priority Date Filing Date
US17/436,587 Active 2040-10-25 US11996756B2 (en) 2019-03-06 2020-01-10 Motor unit
US17/431,425 Abandoned US20220123628A1 (en) 2019-03-06 2020-01-10 Motor unit
US17/436,585 Active 2040-12-31 US12027946B2 (en) 2019-03-06 2020-01-10 Motor unit
US17/436,584 Active 2041-01-02 US12040679B2 (en) 2019-03-06 2020-01-10 Motor unit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US17/436,587 Active 2040-10-25 US11996756B2 (en) 2019-03-06 2020-01-10 Motor unit

Family Applications After (2)

Application Number Title Priority Date Filing Date
US17/436,585 Active 2040-12-31 US12027946B2 (en) 2019-03-06 2020-01-10 Motor unit
US17/436,584 Active 2041-01-02 US12040679B2 (en) 2019-03-06 2020-01-10 Motor unit

Country Status (5)

Country Link
US (4) US11996756B2 (enrdf_load_stackoverflow)
JP (4) JP7439821B2 (enrdf_load_stackoverflow)
CN (4) CN113424419B (enrdf_load_stackoverflow)
DE (4) DE112020001070T5 (enrdf_load_stackoverflow)
WO (4) WO2020179218A1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220049768A1 (en) * 2020-08-12 2022-02-17 Nidec Corporation Drive apparatus
US20240022135A1 (en) * 2021-03-04 2024-01-18 Aisin Corporation Rotating electrical machine
US20240405629A1 (en) * 2023-06-01 2024-12-05 Hamilton Sundstrand Corporation Insulated actuator housing

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3815944B1 (en) 2019-10-31 2022-06-15 BRUSA Elektronik AG Compact powertrain with an electric motor
US12273012B2 (en) * 2019-12-17 2025-04-08 Nidec Coporation Drive device
US12372149B2 (en) * 2020-10-28 2025-07-29 Aisin Corporation Vehicle drive device
JP7512861B2 (ja) 2020-11-19 2024-07-09 ニデック株式会社 駆動装置
JP7647276B2 (ja) * 2020-11-19 2025-03-18 ニデック株式会社 駆動装置、及び車両
JP7537514B2 (ja) * 2020-11-25 2024-08-21 株式会社アイシン 回転電機
DE102021214080A1 (de) * 2020-12-25 2022-06-30 Nidec Corporation Antriebsvorrichtung
EP4253802B1 (en) * 2020-12-30 2025-09-10 Huawei Digital Power Technologies Co., Ltd. Control method and device
US11722038B2 (en) * 2021-01-13 2023-08-08 Dana Belgium N.V. Systems and methods for cooling electric motor
JP7509048B2 (ja) * 2021-02-02 2024-07-02 トヨタ自動車株式会社 電動車両
JP7647181B2 (ja) * 2021-03-08 2025-03-18 ニデック株式会社 回転電機、および駆動装置
US20240088743A1 (en) * 2021-03-31 2024-03-14 Aisin Corporation Vehicle drive device
JP2022168575A (ja) * 2021-04-26 2022-11-08 日本電産株式会社 駆動モータモジュール
JP7687853B2 (ja) * 2021-04-28 2025-06-03 澤藤電機株式会社 ステータおよびそのステータを備えた回転電機
JP2023003538A (ja) * 2021-06-24 2023-01-17 株式会社エフ・シー・シー 減速機付き電動機ユニット
JP7714390B2 (ja) * 2021-06-30 2025-07-29 ニデック株式会社 モータユニット
JP2023025454A (ja) * 2021-08-10 2023-02-22 日本電産株式会社 駆動装置
JP2023042978A (ja) * 2021-09-15 2023-03-28 日本電産株式会社 駆動装置
JP2023050914A (ja) * 2021-09-30 2023-04-11 日本電産株式会社 電動パワーユニット
JP2023066956A (ja) * 2021-10-29 2023-05-16 ニデック株式会社 駆動装置
US20240405634A1 (en) * 2021-11-25 2024-12-05 Aisin Corporation Vehicle drive device
WO2023189033A1 (ja) * 2022-03-31 2023-10-05 ニデック株式会社 駆動装置
DE102022113563A1 (de) 2022-05-30 2023-11-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kühlsystem zur effektiven Kühlung einer elektrischen Maschine eines Kraftfahrzeugs
WO2023243314A1 (ja) * 2022-06-15 2023-12-21 ニデック株式会社 駆動装置
EP4329166A1 (en) * 2022-08-26 2024-02-28 Valeo eAutomotive Germany GmbH Arrangement, comprising an electric motor and an inverter and method for assembling the arrangement
CN115864715B (zh) * 2022-12-08 2023-09-12 扬州大劲电机制造有限公司 一种长寿命耐久使用的电动工具用电机
WO2024190154A1 (ja) 2023-03-14 2024-09-19 株式会社アイシン 車両用駆動装置
DE102023108465A1 (de) * 2023-04-03 2024-10-10 Bayerische Motoren Werke Aktiengesellschaft Antriebseinrichtung für ein Kraftfahrzeug, insbesondere für einen Kraftwagen, sowie Kraftfahrzeug mit wenigstens einer solchen Antriebseinrichtung
WO2025062786A1 (ja) * 2023-09-22 2025-03-27 ジヤトコ株式会社 ユニット
WO2025062785A1 (ja) * 2023-09-22 2025-03-27 ジヤトコ株式会社 ユニット
DE102023212874A1 (de) * 2023-12-18 2025-06-18 Volkswagen Aktiengesellschaft Elektrische Antriebseinheit für ein Kraftfahrzeug und Kraftfahrzeug

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016197983A (ja) * 2015-04-06 2016-11-24 トヨタ自動車株式会社 動力伝達装置
WO2018030218A1 (ja) * 2016-08-09 2018-02-15 日本電産株式会社 モータ

Family Cites Families (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0769544B2 (ja) 1987-01-23 1995-07-31 東レ株式会社 液晶素子および液晶素子配向膜用コーティング用組成物
US4824803A (en) 1987-06-22 1989-04-25 Standard Microsystems Corporation Multilayer metallization method for integrated circuits
JPH0826359B2 (ja) 1987-09-30 1996-03-13 埼玉第一製薬株式会社 ゲル状石鹸
JP2600852B2 (ja) 1987-10-12 1997-04-16 セイコーエプソン株式会社 電気光学装置の駆動方法
JPH0220385A (ja) 1988-07-08 1990-01-23 Kanzaki Paper Mfg Co Ltd 感熱記録体
JPH0766120B2 (ja) 1989-05-09 1995-07-19 セイコーエプソン株式会社 液晶表示装置
JPH04863A (ja) 1990-04-18 1992-01-06 Canon Inc 画像読取装置
JPH075237A (ja) 1993-06-16 1995-01-10 Japan Radio Co Ltd 航跡表示装置及び方法
JP3886697B2 (ja) * 1999-04-27 2007-02-28 アイシン・エィ・ダブリュ株式会社 駆動装置
JP3886696B2 (ja) 1999-04-27 2007-02-28 アイシン・エィ・ダブリュ株式会社 駆動装置
JP2001119898A (ja) 1999-10-18 2001-04-27 Aisin Aw Co Ltd 駆動装置
JP3893815B2 (ja) 1999-10-18 2007-03-14 アイシン・エィ・ダブリュ株式会社 車両駆動装置
JP4477721B2 (ja) * 1999-11-15 2010-06-09 日本電産シバウラ株式会社 ブラシレスｄｃモーター及びその製造方法
JP3972170B2 (ja) * 2000-09-26 2007-09-05 スズキ株式会社 車両用モータアシスト装置の冷却構造
JP4695287B2 (ja) * 2001-04-27 2011-06-08 日本電産シンポ株式会社 回転駆動装置
CN100334792C (zh) * 2002-09-13 2007-08-29 爱信艾达株式会社 驱动装置
JP3794392B2 (ja) 2003-02-25 2006-07-05 日産自動車株式会社 電気自動車の駆動ユニット
JP4310683B2 (ja) * 2003-05-13 2009-08-12 アイシン・エィ・ダブリュ株式会社 電動機内蔵駆動装置
JP2008092727A (ja) * 2006-10-04 2008-04-17 Toyota Motor Corp 車両の駆動装置
JP4719134B2 (ja) * 2006-11-22 2011-07-06 三菱重工業株式会社 インバータ一体型電動圧縮機
JP5051456B2 (ja) * 2008-02-20 2012-10-17 アイシン・エィ・ダブリュ株式会社 ハイブリッド駆動装置
JP2009303446A (ja) * 2008-06-17 2009-12-24 Honda Motor Co Ltd 永久磁石電動機
JP5177232B2 (ja) 2008-11-21 2013-04-03 トヨタ自動車株式会社 ブリーザ装置および駆動装置
JP4951646B2 (ja) 2009-03-26 2012-06-13 本田技研工業株式会社 端子台およびインバータケース
JP2011131828A (ja) * 2009-12-25 2011-07-07 Mitsubishi Fuso Truck & Bus Corp ハイブリッド電気自動車のモータ用ベアリングの潤滑構造
EP2573909B1 (en) * 2010-05-18 2016-03-30 Toyota Jidosha Kabushiki Kaisha Vehicle control system
JP5766431B2 (ja) * 2010-11-30 2015-08-19 三菱重工業株式会社 電動圧縮機
JP2012138989A (ja) * 2010-12-24 2012-07-19 Toyota Motor Corp 動力伝達装置
WO2013069774A1 (ja) 2011-11-09 2013-05-16 日立オートモティブシステムズ株式会社 電気自動車の駆動装置
JP5464224B2 (ja) * 2012-03-14 2014-04-09 株式会社安川電機 モータ駆動装置および車両
JP5655873B2 (ja) * 2012-05-09 2015-01-21 株式会社安川電機 インバータ装置
JP5862502B2 (ja) * 2012-07-27 2016-02-16 アイシン・エィ・ダブリュ株式会社 車両用駆動装置
JP5978954B2 (ja) 2012-11-26 2016-08-24 三菱自動車工業株式会社 回転電機装置
JP6295726B2 (ja) * 2014-03-03 2018-03-20 コベルコ建機株式会社 電動機
JP6245075B2 (ja) * 2014-05-28 2017-12-13 アイシン・エィ・ダブリュ株式会社 車両用駆動装置
JP6442922B2 (ja) * 2014-08-22 2018-12-26 日本電産株式会社 モータ
JP6441642B2 (ja) * 2014-10-31 2018-12-19 株式会社安川電機 駆動装置及びそれを備える乗り物並びに駆動装置の製造方法
JP2016127732A (ja) 2015-01-06 2016-07-11 株式会社豊田自動織機 スリップリング装置
JP6573456B2 (ja) * 2015-01-28 2019-09-11 本田技研工業株式会社 一体型ユニット
JP6876366B2 (ja) 2015-05-20 2021-05-26 日産自動車株式会社 車載駆動装置
JP6593625B2 (ja) * 2015-05-25 2019-10-23 株式会社ジェイテクト 回転角検出装置
JP2017028798A (ja) 2015-07-17 2017-02-02 株式会社豊田自動織機 減速機付きモータの冷却構造
DE112016003891T5 (de) * 2015-08-27 2018-05-09 Nidec Corporation Motor
CN108141113B (zh) * 2015-11-06 2020-11-10 日本电产株式会社 马达
JP2017127118A (ja) * 2016-01-14 2017-07-20 Ntn株式会社 モータ用ハウジング
CN109314439B (zh) * 2016-06-17 2020-09-18 株式会社美姿把 带减速器的马达及带减速器的马达的组装方法
JP2018027003A (ja) * 2016-08-09 2018-02-15 日本電産株式会社 モータユニット
CN114362451A (zh) * 2016-08-09 2022-04-15 日本电产株式会社 驱动装置
JP6492127B2 (ja) * 2016-08-11 2019-03-27 ハンオン システムズ インバータ一体型ｂｌｄｃモータ
JP2018046713A (ja) * 2016-09-16 2018-03-22 日本電産株式会社 モータ
JP6785691B2 (ja) 2017-03-13 2020-11-18 住友重機械工業株式会社 駆動装置
US11011955B2 (en) * 2017-03-28 2021-05-18 Lg Electronics Inc. Motor
CN110999040B (zh) 2017-07-28 2022-02-01 日本电产株式会社 马达
JP7040770B2 (ja) 2017-08-23 2022-03-23 国立大学法人東北大学 活性種含有液噴射装置
JP7008262B2 (ja) 2017-10-13 2022-01-25 トヨタ自動車株式会社 リチウムイオン二次電池用電極およびリチウムイオン二次電池
JP6644443B2 (ja) 2017-12-16 2020-02-12 株式会社アーズ 切換装置、それを備える電力ユニットおよびそれを備える電力システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016197983A (ja) * 2015-04-06 2016-11-24 トヨタ自動車株式会社 動力伝達装置
WO2018030218A1 (ja) * 2016-08-09 2018-02-15 日本電産株式会社 モータ

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220049768A1 (en) * 2020-08-12 2022-02-17 Nidec Corporation Drive apparatus
US11873897B2 (en) * 2020-08-12 2024-01-16 Nidec Corporation Drive apparatus
US20240102556A1 (en) * 2020-08-12 2024-03-28 Nidec Corporation Drive apparatus
US12135084B2 (en) * 2020-08-12 2024-11-05 Nidec Corporation Drive apparatus
US20240022135A1 (en) * 2021-03-04 2024-01-18 Aisin Corporation Rotating electrical machine
US12388324B2 (en) * 2021-03-04 2025-08-12 Aisin Corporation Rotating electrical machine
US20240405629A1 (en) * 2023-06-01 2024-12-05 Hamilton Sundstrand Corporation Insulated actuator housing

Also Published As

Publication number Publication date
WO2020179217A1 (ja) 2020-09-10
JP7439819B2 (ja) 2024-02-28
JPWO2020179218A1 (enrdf_load_stackoverflow) 2020-09-10
JPWO2020179217A1 (enrdf_load_stackoverflow) 2020-09-10
US20220149701A1 (en) 2022-05-12
WO2020179218A1 (ja) 2020-09-10
CN113498573B (zh) 2024-07-26
WO2020179216A1 (ja) 2020-09-10
CN113424417A (zh) 2021-09-21
US11996756B2 (en) 2024-05-28
US20220173639A1 (en) 2022-06-02
JPWO2020179216A1 (enrdf_load_stackoverflow) 2020-09-10
WO2020179219A1 (ja) 2020-09-10
DE112020001077T5 (de) 2021-12-09
CN113424417B (zh) 2024-08-23
JPWO2020179219A1 (enrdf_load_stackoverflow) 2020-09-10
DE112020001076T5 (de) 2021-12-09
DE112020001073T5 (de) 2021-12-23
CN113424418B (zh) 2024-07-19
JP7439821B2 (ja) 2024-02-28
CN113498573A (zh) 2021-10-12
CN113424419A (zh) 2021-09-21
JP7439820B2 (ja) 2024-02-28
CN113424419B (zh) 2024-07-26
US12040679B2 (en) 2024-07-16
US20220173638A1 (en) 2022-06-02
US12027946B2 (en) 2024-07-02
JP7472897B2 (ja) 2024-04-23
DE112020001070T5 (de) 2021-12-09
CN113424418A (zh) 2021-09-21

Similar Documents

Publication Publication Date Title
US20220123628A1 (en) Motor unit
US20220268351A1 (en) Drive apparatus and oil changing method
US11515749B2 (en) Motor assembly
JP7331501B2 (ja) 駆動装置
US11137061B2 (en) Motor unit
US10865873B2 (en) Motor unit
US12381446B2 (en) Motor unit with oil colling passage
US10879769B2 (en) Motor unit
US10862373B2 (en) Motor unit
US10903705B2 (en) Motor
US20230069613A1 (en) Drive apparatus
US10868452B2 (en) Motor
US11496023B2 (en) Drive apparatus
WO2011155277A1 (ja) 車両用駆動装置
US11616419B2 (en) Motor unit with oil cooling passage
US11201523B2 (en) Motor unit
US11598410B2 (en) Drive device
CN112564385B (zh) 驱动装置
JP2022136505A (ja) 駆動装置
US20230136544A1 (en) Drive apparatus
JP2023030828A (ja) 駆動装置
US20230065709A1 (en) Drive apparatus
JP2022136504A (ja) 駆動装置
CN113206578A (zh) 驱动装置
JP2023031030A (ja) 駆動装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: NIDEC CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NAKAMATSU, SHUHEI;REEL/FRAME:057195/0912

Effective date: 20210728

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION