WO2015083637A1 - Machine électrique rotative - Google Patents

Machine électrique rotative Download PDF

Info

Publication number
WO2015083637A1
WO2015083637A1 PCT/JP2014/081553 JP2014081553W WO2015083637A1 WO 2015083637 A1 WO2015083637 A1 WO 2015083637A1 JP 2014081553 W JP2014081553 W JP 2014081553W WO 2015083637 A1 WO2015083637 A1 WO 2015083637A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
outer rotor
inner rotor
rotor
hole
Prior art date
Application number
PCT/JP2014/081553
Other languages
English (en)
Japanese (ja)
Inventor
祥平 松本
修士 湯本
弘文 藤原
Original Assignee
株式会社豊田自動織機
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 株式会社豊田自動織機 filed Critical 株式会社豊田自動織機
Publication of WO2015083637A1 publication Critical patent/WO2015083637A1/fr

Links

Images

Classifications

    • 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
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors

Definitions

  • the present invention relates to a rotating electrical machine, and more particularly to a double rotor type rotating electrical machine mounted on a hybrid vehicle equipped with an engine.
  • a rotating electrical machine mounted on a hybrid vehicle has an inner rotor, an outer rotor disposed around the inner rotor, and a stator disposed around the outer rotor.
  • Three-phase alternating current is supplied to the coils of the inner rotor and the stator, and the outer rotor is rotated by the rotating magnetic field generated thereby, and the wheels of the vehicle are driven through an axle mechanically connected to the outer rotor.
  • the inner rotor is rotationally driven by the engine and generates power.
  • traveling of the vehicle when the rotating electrical machine is driving wheels without generating power is referred to as EV mode traveling.
  • traveling of the vehicle when the rotating electrical machine is generating power and driving wheels at the same time is called RE (range extend) mode traveling.
  • Patent Document 1 describes a configuration for circulating oil inside a rotating electrical machine to lubricate and cool components of the rotating electrical machine.
  • oil flows through an elongated hole 300 formed inside the rotation shaft 202 of the inner rotor 10.
  • the rotary shaft 202 of the inner rotor 10 is provided with a jet port 301 communicating the outer peripheral surface of the rotary shaft 202 with the elongated hole 300.
  • the oil in the long hole 300 flows out from the jet port 301 to the outer peripheral surface of the rotating shaft 202.
  • This invention is made in order to solve such a problem, and even if it is not the case where the inner rotor is rotating, it aims at providing the rotary electric machine which can cool an inner rotor efficiently.
  • a rotary electric machine comprises: a rotary shaft; an inner rotor which is integrally rotatably provided on an outer peripheral surface of the rotary shaft and which is mechanically connected to an internal combustion engine or an axle; An outer rotor disposed outside the rotor and mechanically coupled to the internal combustion engine or the axle, an outer rotor bracket supporting the outer rotor and rotatably supported on the rotary shaft via a bearing, the outer rotor An oil supply passage through which oil flows is formed inside the rotary shaft, and an oil circulation passage communicating with the oil supply passage between the rotary shaft and the outer rotor bracket.
  • the oil flow path has an oil outlet located radially inward of the inner rotor. That.
  • the rotary electric machine according to the present invention is provided on the rotary shaft and the inner rotor which is integrally rotatably provided on the outer peripheral surface of the rotary shaft and mechanically connected to the internal combustion engine or the axle, and is arranged outside the inner rotor.
  • an outer rotor that is mechanically coupled to the internal combustion engine or the axle, an outer rotor bracket that supports the outer rotor and is rotatably supported by the rotating shaft via a bearing, and a stator that is disposed outside the outer rotor.
  • an oil supply passage through which oil flows is formed inside the rotary shaft, and an oil circulation passage communicating with the oil supply passage is formed between the rotary shaft and the outer rotor bracket, and the outer rotor bracket
  • a communication hole is formed in the oil supply through hole, and the communication hole is It may have a communication hole outlet located radially inward of the rotor.
  • the rotary electric machine includes a rotary shaft, an inner rotor which is integrally rotatably provided on an outer peripheral surface of the rotary shaft and which is mechanically coupled to an internal combustion engine or an axle, and is arranged outside the inner rotor. And an outer rotor that is mechanically coupled to the internal combustion engine or the axle, an outer rotor bracket that supports the outer rotor and is rotatably supported by the rotating shaft via a bearing, and a stator that is disposed outside the outer rotor.
  • an oil supply passage through which oil flows is formed inside the rotary shaft, and an oil circulation passage communicating with the oil supply passage is formed between the rotary shaft and the outer rotor bracket, and the outer rotor bracket And an oil flow path in communication with the oil flow path and provided adjacent to the bearing.
  • the notch groove may have a cutout groove outlet located radially inwardly of the inner rotor.
  • the rotary shaft of the rotary electric machine includes an oil supply unit that supplies oil to the inner rotor without passing through the oil flow path, and oil supply by the oil supply unit when the rotation of the inner rotor is stopped. May be provided with an oil blocking mechanism to stop the
  • the inner rotor can be efficiently cooled even when the inner rotor is not rotating.
  • FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 and schematically showing a part of the structure of a rotating shaft.
  • the rotary electric machine shown in FIG. 1 WHEREIN: It is the figure which expanded the structure of oil distribution route vicinity.
  • the rotary electric machine which concerns on Embodiment 2 of this invention WHEREIN: It is the figure which expanded the structure of the oil distribution channel and the communication hole vicinity.
  • the rotary electric machine which concerns on Embodiment 3 of this invention WHEREIN It is the figure which expanded the oil distribution channel and the structure of notch groove vicinity.
  • FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 6 and schematically showing a part of the structure of the rotating shaft.
  • FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 6 and schematically showing a part of the structure of the rotary shaft.
  • Embodiment 1 The rotary electric machine 101 according to the embodiment of the present invention will be described as a double rotor type rotary electric machine mounted on a hybrid vehicle including the engine 6.
  • the rotary electric machine 101 includes an inner rotor 10, an outer rotor 20, and a stator 30 which are accommodated inside the housing 1.
  • Each of the inner rotor 10, the outer rotor 20, and the stator 30 has a substantially cylindrical shape, and is arranged concentrically sequentially from the inside to the outside.
  • a rotary shaft 40 is rotatably supported via a first bearing 42 and a second bearing 48 and extends outside the housing 1.
  • the slip ring 4 is fixed to one end of the rotating shaft 40 outside the housing 1 and the output shaft of the internal combustion engine, that is, the engine 6 is mechanically connected to the other end via a gear mechanism or the like.
  • the direction in which the slip ring 4 is provided is taken as the direction X
  • the direction in which the engine 6 is connected is taken as the direction Y.
  • oil for lubricating or cooling components of the rotary electric machine 101 is stored below the rotary shaft 40.
  • the rotary electric machine 101 is mounted on a car with the bottom portion 1a positioned downward.
  • the inner rotor 10 is integrally rotatably fixed to and supported by the outer circumferential surface 40 d of the rotary shaft 40. Further, the inner rotor 10 has a first core 11 fixed to the rotating shaft 40 and a first coil 12 provided at both ends of the first core 11 along the circumferential direction. The first coil 12 of the inner rotor 10 and the slip ring 4 are electrically connected to each other through the conductor 4 a provided inside the rotary shaft 40. Further, the inner rotor 10 is mechanically coupled to the engine 6 via the rotating shaft 40.
  • a substantially disc-shaped first outer rotor bracket 24 is integrally provided at an end of the outer rotor 20 in the direction X side.
  • the first outer rotor bracket 24 is rotatably supported on the rotating shaft 40 via the third bearing 47.
  • the second outer rotor bracket 25 is integrally provided at an end of the outer rotor 20 in the direction Y as well.
  • the second outer rotor bracket 25 has a plate-like portion 25 a facing the first outer rotor bracket 24 and a cylindrical portion 25 b projecting and extending from the plate-like portion 25 a in the direction Y.
  • the plate-like portion 25a has an annular projecting portion 25c formed on the direction X side so as to surround the rotary shaft 40.
  • the end of the protrusion 25 c is located radially inward of the first coil 12 of the inner rotor 10.
  • the “radially inner side” of the first coil 12 means being located at a portion corresponding to the inner diameter of the first coil and being disposed at the same position as the first coil 12 in the axial direction of the rotary shaft 40.
  • a fourth bearing 43 is disposed between the projecting portion 25 c of the second outer rotor bracket 25 and the rotary shaft 40, and a needle bearing 45 is disposed between the cylindrical portion 25 b and the rotary shaft 40. That is, the second outer rotor bracket 25 is rotatably supported on the rotating shaft 40 via the fourth bearing 43 and the needle bearing 45.
  • the first outer rotor bracket 24 and the second outer rotor bracket 25 support the outer rotor 20 so as to be rotatable relative to the rotating shaft 40.
  • a space formed between the protrusion 25 c of the second outer rotor bracket 25 and the rotary shaft 40 constitutes an oil flow path 46. That is, the oil circulation path 46 is a space partitioned by the inner peripheral surface of the second outer rotor bracket 25 as the outer rotor bracket and the outer peripheral surface 40 d of the rotating shaft 40.
  • the oil flow path 46 has an oil outlet 46a adjacent to the end of the protrusion 25c.
  • the oil outlet 46a is a region located on the extension of the end of the protrusion 25c inside the protrusion 25c, and the end of the protrusion 25c and the oil outlet 46a are flush.
  • the fourth bearing 43 is disposed such that the end on the direction X side is flush with the end of the protrusion 25c at the oil outlet 46a.
  • a first permanent magnet 20a facing the stator 30 and a second permanent magnet 20b facing the inner rotor 10 are provided inside the outer rotor 20, a first permanent magnet 20a facing the stator 30 and a second permanent magnet 20b facing the inner rotor 10 are provided.
  • the pinion gear 5 is attached to the outer peripheral surface of the cylindrical portion 25 b of the second outer rotor bracket 25.
  • the pinion gear 5 is engaged with a driven gear 15 mechanically connected to an axle 7 and a wheel 8 of the vehicle. That is, the outer rotor 20 is mechanically connected to the axle 7 via a gear mechanism such as the driven gear 15 or the like.
  • the stator 30 is fixed to the inner circumferential surface of the housing 1.
  • the stator 30 has a second core 31 fixed to the housing 1 and a second coil 32 provided at both ends of the second core 31 along the circumferential direction.
  • An oil supply through hole 44 extending in the axial direction of the rotary shaft 40 is formed inside the rotary shaft 40.
  • the oil supply through hole 44 extends from a position near the first bearing 42 to a position corresponding to the central portion of the first core 11 of the inner rotor 10.
  • three oil receiving holes 44 a are formed in the portion corresponding to the II-II line in FIG. 1 in the rotating shaft 40 and is in communication with the oil supply through hole 44.
  • the three oil receiving holes 44 a are spaced apart from each other by about 120 degrees around the oil supply through hole 44.
  • a first oil outflow hole 40a communicating with the oil supply through hole 44 is formed at a position corresponding to the needle bearing 45.
  • a second oil outflow hole 40b for communicating the oil supply through hole 44 with the oil circulation path 46 is formed. Further, in the vicinity of the end portion on the direction X side of the oil supply through hole 44, a plurality of third oil outflow holes 40c are formed in a ring shape in the rotating shaft 40 and communicated with the oil supply through hole 44.
  • the first oil outlet hole 40a, the second oil outlet hole 40b, the third oil outlet hole 40c, the oil supply through hole 44, and the oil receiving hole 44a constitute an oil supply passage.
  • a substantially cylindrical rotary joint 63 is attached to the rotating shaft 40 so as to cover the oil receiving hole 44a.
  • a circumferential groove 63a is formed on the inner peripheral surface of the rotary joint 63 so as to communicate with the oil receiving hole 44a.
  • An oil supply pipe 62 extending in the vertical direction is connected to the lower portion of the rotary joint 63.
  • the oil supply pipe 62 communicates with the circumferential groove 63a.
  • an oil pump 61 is connected to the lower end of the oil supply pipe 62, and the oil pump 61 is positioned to be immersed in the oil stored in the bottom portion 1 a of the housing 1.
  • a three-phase alternating current flows from the storage battery (not shown) to the second coil 32 of the stator 30.
  • a rotating magnetic field is generated between the second coil 32 of the stator 30 and the first permanent magnet 20 a of the outer rotor 20.
  • a three-phase alternating current also flows from the storage battery to the first coil 12 of the inner rotor 10 via the slip ring 4 and the conductor 4a.
  • a rotating magnetic field is also generated between the first coil 12 of the inner rotor 10 and the second permanent magnet 20 b of the outer rotor 20.
  • the outer rotor 20 starts its rotational motion by the rotating magnetic field generated between the stator 30 and the outer rotor 20 and between the inner rotor 10 and the outer rotor 20, and via the pinion gear 5, the driven gear 15 and the axle 7. Drive the wheels 8 of the vehicle. At this time, the rotating shaft 40 is restrained by the brake mechanism (not shown) so as to stop the rotation so that the inner rotor 10 does not rotate.
  • a three-phase alternating current is supplied from the storage battery to the second coil 32 of the stator 30, and between the second coil 32 of the stator 30 and the first permanent magnet 20 a of the outer rotor 20.
  • the outer rotor 20 rotationally moves by the rotating magnetic field as in the EV mode traveling, and drives the wheels 8 of the vehicle through the pinion gear 5, the driven gear 15 and the axle 7.
  • the rotating shaft 40 is released from restraint by the brake mechanism and is rotationally driven by the engine 6.
  • the inner rotor 10 is also rotationally driven by the engine 6 via the rotary shaft 40.
  • the flow of oil in the rotary electric machine 101 will be described with reference to FIG.
  • the oil stored in the bottom portion 1a of the housing 1 is sucked up by the oil pump 61, flows through the oil supply pipe 62, and is pumped to the circumferential groove 63a of the rotary joint 63. Be done. Then, the oil flows from the circumferential groove 63a of the rotary joint 63 into the oil supply through hole 44 via the oil receiving hole 44a. Then, part of the oil flowing through the oil supply through hole 44 flows into the third oil outflow hole 40c (arrow A4).
  • the oil flowing through the third oil outflow hole 40 c is not subjected to the centrifugal force due to the rotation of the inner rotor 10, and the first coil 12 of the inner rotor 10 is It will not be blown away and supplied.
  • the other part of the oil flowing through the oil supply through hole 44 lubricates the needle bearing 45 via the first oil outflow hole 40a and flows into the oil circulation path 46 (arrow A1). Further, part of the remaining oil also flows into the second oil outflow hole 40b and flows into the oil flow path 46 (arrow A2).
  • the oil flow path 46 is provided between the outer rotor 20 and the rotating shaft 40 as a part of means for supplying the cooling oil to the inner rotor 10 There is.
  • the oil in the oil circulation path 46 is urged by the centrifugal force by the rotation of the outer rotor 20, and the oil outlet 46a It is designed to be ejected radially outward from.
  • the oil outlet 46 a of the oil flow path 46 is positioned on the inner side in the radial direction of the inner rotor 10, most of the oil blown off from the oil outlet 46 a is supplied to the inner rotor 10.
  • the inner rotor 10 whose temperature is increased by energization can be cooled more efficiently.
  • FIG. 2 The configuration of a rotary electric machine 102 according to Embodiment 2 of the present invention is shown in FIG.
  • the same reference numerals as those in FIG. 1 denote the same or similar constituent elements, and a detailed description thereof will be omitted.
  • a second outer rotor bracket 125 is attached to an end of the outer rotor 20 in the direction Y side.
  • the second outer rotor bracket 125 has a plate-like portion 125 a facing the first outer rotor bracket 24 and a cylindrical portion 125 b projecting and extending from the plate-like portion 125 a in the direction Y.
  • the plate-like portion 125 a has an annular projecting portion 125 c formed on the direction X side so as to surround the rotary shaft 40.
  • a communication hole 125d is formed in the protrusion 125c.
  • the communication hole 125d communicates the oil flow path 46 with the space inside the second outer rotor bracket 125, and has the communication hole inlet 125e on the oil flow path 46 side and the communication hole outlet 125f on the inner rotor 10 side. doing.
  • the communication hole inlet 125 e is provided adjacent to the fourth bearing 43.
  • the communication hole outlet 125 f is provided so as to be located radially inward of the first coil 12 of the inner rotor 10.
  • the communication hole outlet 125f is located closer to the direction X than the communication hole inlet 125e. Therefore, in the projecting portion 125c of the second outer rotor bracket 125, the communication hole 125d is formed in a diagonally linear shape along the direction of the oil flow.
  • the flow of oil in the EV mode traveling of the vehicle in the rotary electric machine 102 will be described.
  • the oil flowing through the oil supply through hole 44 flows into the oil flow path 46 through the first oil outflow hole 40a and the second oil outflow hole 40b (arrows A1, A2) as in the first embodiment.
  • part of the oil flowing through the oil flow path 46 flows into the communication hole 125d from the communication hole inlet 125e, and flows out to the inner rotor 10 side from the communication hole outlet 125f (arrow A6).
  • the oil flowing out of the communication hole outlet 125 f is blown away by the centrifugal force of the second outer rotor bracket 125 rotating with the outer rotor 20, and is supplied to the first coil 12 of the inner rotor 10.
  • the remaining oil that does not flow in the communication hole 125 d flows as shown by the arrow A3, as in the first embodiment. That is, the oil that has passed through the fourth bearing 43 is urged by the centrifugal force due to the rotation of the outer rotor 20, spatters radially outward from the oil outlet 46 a, and is supplied to the first coil 12 of the inner rotor 10. Furthermore, as in the first embodiment, a part of the oil flowing through the oil supply through hole 44 flows into the third oil outflow hole 40c (arrow A4), but is supplied to the first coil 12 of the inner rotor 10 It will not be done.
  • the communication hole 125d is formed, so that the oil flowing through the communication hole 125d can be used for the inner rotor 10 as well as the oil passing through the fourth bearing 43.
  • One coil 12 can be cooled. Therefore, the first coil 12 of the inner rotor 10 can be cooled more efficiently.
  • the communication hole outlet 125f of the communication hole 125d is positioned radially inward of the inner rotor 10, most of the oil scattered from the communication hole outlet 125f is directly supplied to the inner rotor 10.
  • the inner rotor 10 is sufficiently cooled only by the centrifugal force due to the rotation of the outer rotor 20. be able to.
  • FIG. 3 The structure of the rotary electric machine 103 which concerns on Embodiment 3 of this invention is shown in FIG.
  • the same reference numerals as those in FIG. 1 denote the same or similar constituent elements, and a detailed description thereof will be omitted.
  • a second outer rotor bracket 225 is attached to an end of the outer rotor 20 on the direction Y side.
  • the second outer rotor bracket 225 has a plate-like portion 225 a facing the first outer rotor bracket 24 and a cylindrical portion 225 b protruding and extending from the plate-like portion 225 a in the direction Y.
  • the plate-like portion 225a has an annular projecting portion 225c formed on the direction X side so as to surround the rotary shaft 40.
  • a notch groove 225d is formed adjacent to the fourth bearing 43 in the vicinity of the oil outlet 46a on a part of the inner peripheral surface of the protrusion 225c.
  • the notch groove 225d has a notch groove outlet 225e provided adjacent to the oil outlet 46a. That is, the notch groove outlet 225 e is located radially inward of the first coil 12 of the inner rotor 10. Further, the length of the notch groove 225 d is formed to be longer than the fourth bearing 43 in the axial direction of the rotary shaft 40.
  • the flow of oil in the rotary electric machine 103 will be described.
  • the oil (arrows A1 and A2) that has flowed into the oil flow path 46 through the first oil outflow hole 40a and the second oil outflow hole 40b lubricates the fourth bearing 43 during traveling in the EV mode, and the fourth bearing It circulates the notch groove 225d adjacent to 43 (arrow A7). Then, the oil flows out from the notch groove outlet 225 e, is splashed by the centrifugal force of the second outer rotor bracket 125 rotating with the outer rotor 20, and is supplied to the first coil 12 of the inner rotor 10.
  • part of the oil flowing through the oil supply through hole 44 is the first oil of the inner rotor 10 through the third oil outflow hole 40c. It flows so as to cool the coil 12 (arrows A4, A5).
  • the oil lubricates the fourth bearing 43 by forming the cutout groove 225d, and the oil flows through the cutout groove 225d adjacent to the fourth bearing 43 and the inner
  • the first coil 12 of the rotor 10 is circulated. Therefore, the oil flows through the oil flow path 46 more smoothly, and the first coil 12 of the inner rotor 10 can be cooled more efficiently.
  • the oil discharged from the notch groove outlet 225 e is directly supplied to the inner rotor 10 by the notch groove outlet 225 e of the notch groove 225 d being positioned inward of the inner rotor 10 in the radial direction.
  • the inner rotor 10 is sufficiently cooled only by the centrifugal force due to the rotation of the outer rotor 20. be able to.
  • FIGS. The configuration of a rotary electric machine 104 according to a fourth embodiment of the present invention is shown in FIGS.
  • the same reference numerals as those in FIG. 1 denote the same or similar constituent elements, and a detailed description thereof will be omitted.
  • a rotary shaft 140 is rotatably supported by the housing 1 of the rotary electric machine 104. Inside the rotary shaft 140, a first oil supply through hole 141 and a second oil supply through hole 144 are formed.
  • the first oil supply through hole 141 is eccentric to the rotation center of the rotary shaft 140 and extends in the same direction as the axial direction of the rotary shaft 140.
  • the center of the second oil supply through hole 144 coincides with the rotation center of the rotary shaft 140, and the second oil supply through hole 144 extends parallel to the first oil supply through hole 141.
  • a substantially cylindrical rotary joint 163 is attached between the second outer rotor bracket 25 and the first bearing 42 on the outer peripheral surface of the rotating shaft 140.
  • An oil supply pipe 62 is connected to the lower portion of the rotary joint 163.
  • the inner rotor 10 is provided on the outer peripheral surface 140 d of the rotating shaft 140 so as to be integrally rotatable.
  • an angle sensor (not shown) and a brake mechanism (not shown) are attached to the rotating shaft 140.
  • the first oil supply through hole 141 and the second oil supply through hole 144 constitute an oil supply passage.
  • first oil receiving holes 144e communicating with the first oil supply through hole 141 are radially formed in a portion corresponding to the line VII-VII in FIG. ing.
  • a circumferential groove 163a is formed at a position near the direction Y in the inner peripheral surface of the rotary joint 163 so as to cover the first oil receiving hole 144e. That is, the circumferential groove 163a communicates with the first oil supply through hole 141 via the first oil receiving hole 144e.
  • a first oil outflow hole 140 a communicating with the first oil supply through hole 141 is formed at a position corresponding to the needle bearing 45 in the rotary shaft 140.
  • a second oil outflow hole 140b for communicating the first oil supply through hole 141 with the oil flow path 46 is formed.
  • three second oil receiving holes 144a communicating with the second oil supply through hole 144 are formed in the portion corresponding to the line VIII-VIII in FIG. ing.
  • the second oil receiving holes 144 a are spaced apart from each other by about 120 degrees with respect to the second oil supply through hole 144.
  • a C-shaped groove 144c is formed on the outer peripheral side of the rotating shaft 140, and communicates with the second oil supply through hole 144 via the second oil receiving hole 144a.
  • the convex portion sandwiched by both ends of the C-shaped groove 144c constitutes an oil stopper portion 144f. Furthermore, as shown in FIG.
  • a plurality of third oil outflow holes 140c are formed in a circular ring on the rotary shaft 140 to supply the second oil It communicates with the through hole 144.
  • the hole 144a constitutes an oil supply passage.
  • the second oil supply through hole 144 and the third oil outflow hole 140c constitute an oil supply unit.
  • the oil stopper portion 144f constitutes an oil blocking structure.
  • the circumferential groove 163 a and the C-shaped groove 144 c communicate with the oil supply pipe 62.
  • the oil flowing through the first oil supply through hole 141 is supplied to the needle bearing 45 and the oil flow path 46 and the fourth bearing 43 via the first oil outflow hole 140a and the second oil outflow hole 140b. Then, the oil is subjected to a centrifugal force due to the rotation of the outer rotor 20, is blown radially outward from the oil outlet 46a, and is supplied to the first coil 12 of the inner rotor 10.
  • the remaining oil that does not flow into the first oil supply through hole 141 flows into the second oil supply through hole 144 via the C-shaped groove 144 c and the second oil receiving hole 144 a. Then, it flows out to the outside of the rotary shaft 140 through the third oil outflow hole 140c, is blown off by receiving centrifugal force by the rotation of the inner rotor 10 and the rotary shaft 40, and is supplied to the first coil 12 of the inner rotor 10. . That is, the oil flowing through the second oil supply through hole 144 and the third oil outflow hole 140 c is supplied to the inner rotor 10 without passing through the oil flow path 46.
  • the brake mechanism rotates to such an angle that the oil stopper 144 f comes to a position where the upper end of the oil supply pipe 62 is closed as shown in FIG. 8 based on the angle of the rotating shaft 140 detected by the angle sensor.
  • the shaft 140 is stopped.
  • the inflow of oil from the oil supply pipe 62 to the second oil supply through hole 144 that is, the supply of oil to the inner rotor 10 by the second oil supply through hole 144 and the third oil outflow hole 120c is stopped.
  • the oil that has flowed into the rotary joint 163 through the oil supply pipe 62 flows into the first oil supply through hole 141 through the circumferential groove 163a and the first oil receiving hole 144e.
  • the oil flowing through the first oil supply through hole 141 is supplied to the first coil 12 of the inner rotor 10 via the oil flow path 46, as in the RE mode traveling.
  • the rotating electrical machine 104 includes the first oil supply through hole 141 communicating with the first oil outflow hole 140a and the second oil outflow hole 140b, and the second oil communicating with the third oil outflow hole 140c. And an oil supply through hole 144. Further, the oil stopping portion 144f formed on the rotating shaft 140 together with the C-shaped groove 144c functions as an oil blocking structure, so that the inflow of oil to the second oil supply through hole 144 is stopped during the EV mode traveling. Ru.
  • the oil does not flow out of the third oil outflow hole 140c, but flows out only of the first oil outflow hole 140a and the second oil outflow hole 140b, and the inner The first coil 12 of the rotor 10 is reliably supplied. Therefore, when the rotation of the inner rotor 10 is stopped, the oil pumped up from the oil pump 61 can be used for cooling the inner rotor 10 without waste, which is efficient.
  • the inner rotor 10 is mechanically connected to the engine 6, and the outer rotor 20 is mechanically connected to the axle 7.
  • the inner rotor 10 is connected to the axle 7
  • the outer rotor 20 may be connected to the engine 6.
  • the fourth bearing 43 is disposed at the oil outlet 46a so that the end face on the direction X side is flush with the end portions of the protrusions 25c, 125c, 225c, but the invention is not limited thereto. Also, it may be arranged in the direction Y.
  • one first oil outflow hole 40a and one second oil outflow hole 40b are formed in the rotary shaft 40 one by one, but a plurality of them may be formed in an annular shape.
  • first oil outflow hole 140a and the second oil outflow hole 140b of the fourth embodiment are also formed one by one, the invention is not limited thereto, and a plurality may be formed in an annular shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne une machine électrique rotative qui permet de refroidir efficacement un rotor interne même lorsque le rotor interne ne tourne pas. La machine électrique rotative comprend : un arbre rotatif ; un rotor interne qui est agencé de sorte à pouvoir tourner conjointement avec l'arbre rotatif ; un rotor externe qui est agencé à l'extérieur du rotor interne ; un support de rotor externe qui est supporté en rotation par l'arbre rotatif ; et un stator qui est agencé à l'extérieur du rotor externe. Un trou traversant d'alimentation en huile est formé à l'intérieur de l'arbre rotatif. Un trajet d'écoulement d'huile est formé entre l'arbre rotatif et un second support de rotor externe. La sortie d'huile du trajet d'écoulement d'huile est positionnée côté radialement vers l'intérieur du rotor interne.
PCT/JP2014/081553 2013-12-05 2014-11-28 Machine électrique rotative WO2015083637A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-252122 2013-12-05
JP2013252122A JP2015109768A (ja) 2013-12-05 2013-12-05 回転電機

Publications (1)

Publication Number Publication Date
WO2015083637A1 true WO2015083637A1 (fr) 2015-06-11

Family

ID=53273400

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/081553 WO2015083637A1 (fr) 2013-12-05 2014-11-28 Machine électrique rotative

Country Status (2)

Country Link
JP (1) JP2015109768A (fr)
WO (1) WO2015083637A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112311149A (zh) * 2019-08-01 2021-02-02 采埃孚股份公司 用于冷却电动机器的转子的冷却流体引导装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019154156A (ja) * 2018-03-02 2019-09-12 本田技研工業株式会社 アウターロータ型回転電機
JP7145938B2 (ja) 2018-04-18 2022-10-03 三菱電機株式会社 電動機
WO2021261911A1 (fr) * 2020-06-23 2021-12-30 엘지이노텍 주식회사 Moteur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011062061A (ja) * 2009-09-14 2011-03-24 Toyota Central R&D Labs Inc 回転電機
JP2012039828A (ja) * 2010-08-11 2012-02-23 Honda Motor Co Ltd 多重ロータモータ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011062061A (ja) * 2009-09-14 2011-03-24 Toyota Central R&D Labs Inc 回転電機
JP2012039828A (ja) * 2010-08-11 2012-02-23 Honda Motor Co Ltd 多重ロータモータ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112311149A (zh) * 2019-08-01 2021-02-02 采埃孚股份公司 用于冷却电动机器的转子的冷却流体引导装置

Also Published As

Publication number Publication date
JP2015109768A (ja) 2015-06-11

Similar Documents

Publication Publication Date Title
CN103620918B (zh) 旋转电机的冷却结构
US9553493B2 (en) Rotating electric machine
WO2015083637A1 (fr) Machine électrique rotative
JP2016041938A (ja) 電動冷却剤ポンプ
JP2013115848A (ja) 回転電機の冷却構造
WO2015045903A1 (fr) Dispositif d'entraînement de roue
JP2012223075A (ja) 回転電機の冷却構造
WO2019208083A1 (fr) Groupe moteur
WO2019208081A1 (fr) Unité de moteur et dispositif d'entraînement de véhicule
JP2009195082A (ja) ステータの冷却構造
JP2018038099A (ja) 電動モータ
JPWO2014102949A1 (ja) 車輪用オイル供給装置、車輪駆動装置
JP5312132B2 (ja) インホイールモータ駆動装置
US10122243B2 (en) Rotating electric machine with a cooling structure
JP2015116900A (ja) 車輪用駆動装置
JP2013177030A (ja) 回転電機の冷却構造
JP5129870B2 (ja) 発電電動機の冷却構造及び発電電動機
WO2020032026A1 (fr) Unité moteur
JP6215613B2 (ja) モータ駆動装置
WO2019208084A1 (fr) Bloc moteur et son procédé de commande
JP2014064433A (ja) 回転電機のロータ軸
JP2017093002A (ja) モータ駆動装置
JP6364948B2 (ja) 回転電機の冷却構造
JP2014092216A (ja) 駆動装置
WO2018037596A1 (fr) Pompe à fluide électrique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14867204

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14867204

Country of ref document: EP

Kind code of ref document: A1