WO2019208084A1 - Bloc moteur et son procédé de commande - Google Patents

Bloc moteur et son procédé de commande Download PDF

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Publication number
WO2019208084A1
WO2019208084A1 PCT/JP2019/013511 JP2019013511W WO2019208084A1 WO 2019208084 A1 WO2019208084 A1 WO 2019208084A1 JP 2019013511 W JP2019013511 W JP 2019013511W WO 2019208084 A1 WO2019208084 A1 WO 2019208084A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
motor
oil pump
oil passage
motor unit
Prior art date
Application number
PCT/JP2019/013511
Other languages
English (en)
Japanese (ja)
Inventor
山口　康夫
久嗣 藤原
中村　圭吾
隆宏 檜皮
Original Assignee
日本電産株式会社
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 日本電産株式会社 filed Critical 日本電産株式会社
Priority to CN201980028272.3A priority Critical patent/CN112020817B/zh
Publication of WO2019208084A1 publication Critical patent/WO2019208084A1/fr

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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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • 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
    • 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
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • Patent Document 1 since oil is not supplied to the lubrication-required part when the rotation of the motor is stopped, the load on the lubrication-required part member is large at the time of starting the motor.
  • an object of the present invention is to provide a motor unit and a motor unit control method capable of reducing a load applied to members of a transmission mechanism at the time of starting a motor.
  • the motor unit and the motor unit control method of one aspect of the present invention it is possible to reduce the load applied to the members of the transmission mechanism when starting the motor.
  • the rear vehicle drive device 10 is disposed at a substantially central portion of the vehicle 100 in the vehicle width direction.
  • the two motor units 1 of the vehicle drive device 10 face each other in the vehicle width direction and are arranged side by side in the vehicle width direction.
  • the two motor units 1 have a symmetrical structure with respect to each other about a virtual vertical plane that includes the central axis J1 in the vehicle width direction of the vehicle 100 and is perpendicular to the motor axis J2.
  • the pair of horizontal frame portions 2c are arranged at intervals in the axial direction.
  • the pair of horizontal frame portions 2c extend in the front-rear direction and face the motor unit 1 from the axial direction.
  • the horizontal frame portion 2 c faces the housing 11 of the motor unit 1 with a gap in the axial direction.
  • the present invention is not limited thereto, and the horizontal frame portion 2c may contact the housing 11 of the motor unit 1 from the axial direction.
  • the pair of motor units 1 are disposed between the pair of horizontal frame portions 2c in the axial direction.
  • the subframe 2 has a portion facing the motor unit 1 from the axial direction and the front-rear direction.
  • the motor housing portion 12 is a portion of the housing 11 that houses the motor 20.
  • the motor housing portion 12 has a cylindrical shape extending in the axial direction.
  • the motor accommodating part 12 is a bottomed cylindrical shape.
  • the motor housing portion 12 opens on one side in the axial direction.
  • the motor housing part 12 has a peripheral wall part 12a and a bottom wall part 12b.
  • the bottom wall portion 12 b holds the bearing 14.
  • the bottom wall portion 12b supports the motor shaft 22 through the bearing 14 so as to be rotatable around the motor axis J2. That is, the housing 11 rotatably supports the motor shaft 22 via the bearing 14.
  • the partition wall 17 has a plate shape that extends in a direction perpendicular to the motor shaft J2.
  • the plate surface of the partition wall portion 17 faces the axial direction.
  • the partition wall portion 17 has an annular plate shape centered on the motor shaft J2.
  • the partition wall portion 17 is disposed in the gear housing portion 13.
  • the partition wall portion 17 is located on the other side in the axial direction from the bearing 15.
  • the outer peripheral part of the partition wall part 17 is fixed to the inner peripheral surface of the peripheral wall part 13a.
  • An inner peripheral portion of the partition wall portion 17 is connected to an outer peripheral portion of an internal gear 34 described later of the transmission mechanism 30.
  • the partition wall part 17 has an oil circulation hole 17a that penetrates the partition wall part 17 in the axial direction.
  • the oil circulation hole 17 a is disposed in at least the lower part of the partition wall portion 17. Only one oil circulation hole 17a may be provided in the partition wall 17 or a plurality of oil circulation holes 17a may be provided.
  • the motor 20 outputs torque that rotates the axle of the vehicle 100. Torque of the motor 20 is transmitted to the axle via the transmission mechanism 30.
  • the motor 20 includes a rotor 21 and a stator 26.
  • the rotor 21 includes a motor shaft 22, a rotor holder 23, a rotor core 24, and a rotor magnet 25.
  • the connecting shaft 31 has a cylindrical shape extending in the axial direction.
  • the connection shaft 31 is a hollow shaft that opens on both sides in the axial direction.
  • One end of the coupling shaft 31 in the axial direction is rotatably supported around the motor axis J2 by the output shaft 38 via the bearing 39a. That is, the connecting shaft 31 and the output shaft 38 are rotatable in the circumferential direction via the bearing 39a.
  • the sun gear 32 is provided on the connecting shaft 31.
  • the sun gear 32 is an external gear whose central axis is the motor shaft J2.
  • the sun gear 32 is positioned on one side in the axial direction from the recess 22a.
  • the sun gear 32 is disposed in an intermediate portion located between the end portion on one side in the axial direction and the end portion on the other side in the axial direction in the outer peripheral portion of the connecting shaft 31.
  • the connecting shaft 31 and the sun gear 32 are part of a single member.
  • the sun gear 32 is a helical gear.
  • the gear teeth of the sun gear 32 extend around the motor shaft J2 in the axial direction. When viewed from the radial direction, the gear teeth of the sun gear 32 extend while being inclined with respect to the motor shaft J2.
  • the planetary gear 33 has a first gear portion 33a and a second gear portion 33b.
  • the diameter (outer diameter) of the first gear portion 33a is larger than the diameter of the second gear portion 33b. That is, in this embodiment, the planetary gear 33 is a stepped pinion type. Therefore, the transmission mechanism 30 further increases the reduction ratio of the rotation of the motor 20.
  • the first gear portion 33 a has a portion located on the radially outer side than the internal gear 34.
  • the first gear portion 33 a has a portion facing the inner peripheral surface of the peripheral wall portion 13 a of the gear housing portion 13 with a gap from the radially inner side. When viewed from the axial direction, the first gear portion 33a and the partition wall portion 17 are arranged to overlap each other.
  • the second gear portion 33b has a meshing portion 33c and a fitting portion 33d.
  • the meshing portion 33c and the fitting portion 33d are arranged side by side in the axial direction.
  • the meshing portion 33c and the internal gear 34 are arranged to overlap each other.
  • the meshing portion 33c is a portion that meshes with the internal gear 34 in the second gear portion 33b. That is, the gear of the 2nd gear part 33b is provided in the outer periphery of the meshing part 33c.
  • the meshing part 33c is located on the other side in the axial direction from the fitting part 33d.
  • the diameter of the meshing part 33c is smaller than the diameter of the first gear part 33a.
  • the circulation structure of the oil O includes an oil passage 40 and oil pumps 61 and 62.
  • the oil passage 40 is provided inside the housing 11.
  • the oil pumps 61 and 62 circulate the oil O through the oil passage 40.
  • the motor unit 1 includes the first oil pump 61 and the second oil pump 62 that circulate the oil O through the oil passage 40.
  • the motor unit 1 includes a plurality of oil pumps 61 and 62.
  • the first oil pump 61 and the second oil pump 62 can supply the oil O to the transmission mechanism 30.
  • the first oil pump 61 and the second oil pump 62 can supply the oil O to the transmission mechanism 30 through the inside of the motor shaft 22.
  • the first oil pump 61 and the second oil pump 62 will be described later separately.
  • the annular oil passage portion 43 is disposed between the outer peripheral surface of the end portion on the other axial side of the connecting shaft 31 and the inner peripheral surface of the recess 22a.
  • the annular oil passage 43 is a ring extending in the circumferential direction.
  • the annular oil passage 43 is a cylindrical space centered on the motor shaft J2, and is provided in the recess 22a.
  • the annular oil passage portion 43 is located on the other side in the axial direction from a portion where the end portion on the other side in the axial direction of the connecting shaft 31 and the recess 22a are fitted.
  • the oil O flowing through the oil passage portion 41 in the motor shaft is supplied to each member of the motor 20 such as the rotor 21 and the stator 26 through the third radial oil passage portion 48.
  • each member of the motor 20 can be stably cooled and lubricated.
  • the fourth radial oil passage portion 49 is located between the pair of bearings 15 and 16 that are arranged with a space therebetween in the axial direction.
  • the fourth radial oil passage portion 49 is disposed in an intermediate portion located between both end portions in the axial direction of the connecting shaft 31.
  • the radially outer end of the fourth radial oil passage portion 49 opens toward the planetary gear 33.
  • the fourth radial oil passage portion 49 opens toward the outer peripheral portion of the meshing portion 33c of the second gear portion 33b.
  • the internal gear 34 and the planetary gear 33 and the fourth radial oil passage portion 49 are disposed so as to overlap each other.
  • a plurality of fourth radial oil passage portions 49 are provided at intervals in the circumferential direction.
  • OF1, OF2, and OF3 indicated by arrows indicate the flow of the oil O in the housing 11 in a simplified manner.
  • OF1 indicates the flow of oil O supplied from the oil cooler 65.
  • the flow OF1 cools the stator 26 and the like, for example.
  • OF2 indicates the flow of the oil O supplied from the first oil pump 61.
  • the flow OF2 cools, for example, the rotor 21 and the stator 26, and lubricates the sun gear 32, the planetary gear 33, the internal gear 34, and the bearings 14, 15, 16, 39a, 39b, and the like.
  • OF3 indicates the flow of the oil O supplied by the oil pumping action by the revolution of the planetary gear 33 around the motor shaft J2.
  • the flow OF3 lubricates, for example, the sun gear 32, the planetary gear 33, the internal gear 34, the bearings 15, 16, 39a, 39b, and the like.
  • the first oil passage portion 51 connects the first oil pump 61 and the inside of the motor shaft 22.
  • the first oil passage portion 51 includes a check valve 51 a between the first oil pump 61 and the inside of the motor shaft 22. That is, the motor unit 1 includes a check valve 51 a inside the housing 11.
  • the check valve 51a has a structure that allows the oil O to pass only in one direction by suppressing the back flow of the valve body by the back pressure of the fluid. Specifically, the check valve 51 a allows the flow of oil O from the first oil pump 61 toward the motor shaft 22 in the first oil passage 51, but from the motor shaft 22 to the first oil pump 61. The directed oil O flow is not allowed.
  • the first oil pump 61 that is an electric oil pump can be selectively used according to the rotation state, temperature, and the like of the motor 20.
  • the operation of the first oil pump (electric oil pump) 61 is performed when the rotational speed of the motor 20 is stable at a low speed when the vehicle 100 is traveling, or when the temperature of the motor 20 and the oil O is low.
  • the oil O may be supplied into the motor shaft 22 only by the second oil pump (mechanical oil pump) 62.
  • the first orifice 55 is provided in the third oil passage portion 54.
  • the first orifice 55 narrows the oil passage of the third oil passage portion 54.
  • the inner diameter of the portion of the oil passage 40 located on the downstream side of the first orifice 55 is smaller than the inner diameter of the portion of the oil passage 40 located on the upstream side of the first orifice 55.
  • the pressure loss in the third oil passage portion 54 is increased by the first orifice 55, so that the oil O discharged from the first oil pump 61 flows preferentially to the first oil passage portion 51. It is.
  • the first oil pump 61 is accommodated in the pump accommodating portion 59.
  • the pump housing portion 59 is a space (chamber) provided in the wall portion of the housing 11.
  • the first oil pump 61 has a substantially cylindrical shape
  • the pump housing portion 59 that houses the first oil pump 61 is a substantially cylindrical space.
  • the pump housing part 59 has a cylindrical hole shape extending in the axial direction.
  • the pump housing portion 59 may have a shape other than the cylindrical hole shape.
  • the pump housing portion 59 is disposed on the upper portion of the housing 11.
  • the pump housing part 59 houses at least a part of the first oil pump 61.
  • the oil cooler 65 is disposed in the upper portion of the housing 11 opposite to the road surface in the vertical direction. That is, the oil cooler 65 is disposed on the upper portion of the housing 11.
  • the road surface is an upper surface of a road or the like on which the vehicle 100 travels or stops, that is, an upper surface of a road or the like on which the vehicle 100 is located.
  • the inverter case 4 is arranged at the top of the subframe 2 in consideration of, for example, water intrusion from the road surface. Placed in.
  • the motor unit 1 and the vehicle driving device 10 are mounted on an electric vehicle (EV)
  • EV electric vehicle
  • the motor unit 1 and the vehicle drive device 10 may be mounted on, for example, a plug-in hybrid vehicle (PHEV), a hybrid vehicle (HEV), or the like.
  • PHEV plug-in hybrid vehicle
  • HEV hybrid vehicle

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention porte, selon un mode de réalisation, sur un bloc moteur qui fait tourner un essieu d'un véhicule. Le bloc moteur comprend : un moteur qui est pourvu d'un arbre de moteur tournant autour d'un axe de moteur ; un mécanisme de transmission qui est relié à l'arbre de moteur et transmet la puissance du moteur à un arbre de sortie ; un carter qui contient le moteur et le mécanisme de transmission ; un passage d'huile situé dans le carter ; et des première et seconde pompes à huile qui font circuler l'huile dans le passage d'huile. Les première et seconde pompes à huile peuvent alimenter le mécanisme de transmission en huile. La première pompe à huile est une pompe à huile entraînée électriquement.
PCT/JP2019/013511 2018-04-27 2019-03-28 Bloc moteur et son procédé de commande WO2019208084A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980028272.3A CN112020817B (zh) 2018-04-27 2019-03-28 马达单元和马达单元的控制方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862663324P 2018-04-27 2018-04-27
US62/663,324 2018-04-27
JP2018150705 2018-08-09
JP2018-150705 2018-08-09

Publications (1)

Publication Number Publication Date
WO2019208084A1 true WO2019208084A1 (fr) 2019-10-31

Family

ID=68295132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/013511 WO2019208084A1 (fr) 2018-04-27 2019-03-28 Bloc moteur et son procédé de commande

Country Status (2)

Country Link
CN (1) CN112020817B (fr)
WO (1) WO2019208084A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11303183B2 (en) 2019-04-25 2022-04-12 American Axle & Manufacturing, Inc. Electric drive module
US11845328B2 (en) 2021-12-01 2023-12-19 American Axle & Manufacturing, Inc. Electric drive unit with motor assembly isolated from beaming loads transmitted through housing assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022141242A1 (fr) * 2020-12-30 2022-07-07 华为数字能源技术有限公司 Procédé et dispositif de commande

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654409A (ja) * 1992-07-29 1994-02-25 Aqueous Res:Kk ハイブリッド型車両
JP2008312343A (ja) * 2007-06-14 2008-12-25 Toyota Motor Corp モータ装置
JP2012126190A (ja) * 2010-12-14 2012-07-05 Mitsubishi Motors Corp ハイブリッド車両
JP2013198378A (ja) * 2012-03-22 2013-09-30 Mitsubishi Motors Corp 電動モータ
JP2015218869A (ja) * 2014-05-20 2015-12-07 トヨタ自動車株式会社 潤滑装置
JP2017114477A (ja) * 2015-12-21 2017-06-29 トヨタ自動車株式会社 車両用冷却装置
JP2018024405A (ja) * 2016-08-12 2018-02-15 トヨタ自動車株式会社 ハイブリッド車両の潤滑装置
WO2018030322A1 (fr) * 2016-08-09 2018-02-15 日本電産株式会社 Dispositif d'entraînement
JP2018057183A (ja) * 2016-09-29 2018-04-05 トヨタ自動車株式会社 回転電機システム
WO2018062107A1 (fr) * 2016-09-30 2018-04-05 日本電産トーソク株式会社 Dispositif de type pompe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3235208B2 (ja) * 1992-09-14 2001-12-04 アイシン・エィ・ダブリュ株式会社 電動車両
JP2004100725A (ja) * 2002-09-05 2004-04-02 Nissan Motor Co Ltd ハイブリッド車両の油圧供給装置
JP5416062B2 (ja) * 2010-09-07 2014-02-12 日立オートモティブシステムズ株式会社 電動オイルポンプの制御装置
JP6213002B2 (ja) * 2013-07-18 2017-10-18 日産自動車株式会社 回転電機のコイルエンド油冷構造
WO2018030324A1 (fr) * 2016-08-09 2018-02-15 日本電産株式会社 Dispositif d'entraînement

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654409A (ja) * 1992-07-29 1994-02-25 Aqueous Res:Kk ハイブリッド型車両
JP2008312343A (ja) * 2007-06-14 2008-12-25 Toyota Motor Corp モータ装置
JP2012126190A (ja) * 2010-12-14 2012-07-05 Mitsubishi Motors Corp ハイブリッド車両
JP2013198378A (ja) * 2012-03-22 2013-09-30 Mitsubishi Motors Corp 電動モータ
JP2015218869A (ja) * 2014-05-20 2015-12-07 トヨタ自動車株式会社 潤滑装置
JP2017114477A (ja) * 2015-12-21 2017-06-29 トヨタ自動車株式会社 車両用冷却装置
WO2018030322A1 (fr) * 2016-08-09 2018-02-15 日本電産株式会社 Dispositif d'entraînement
JP2018024405A (ja) * 2016-08-12 2018-02-15 トヨタ自動車株式会社 ハイブリッド車両の潤滑装置
JP2018057183A (ja) * 2016-09-29 2018-04-05 トヨタ自動車株式会社 回転電機システム
WO2018062107A1 (fr) * 2016-09-30 2018-04-05 日本電産トーソク株式会社 Dispositif de type pompe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11303183B2 (en) 2019-04-25 2022-04-12 American Axle & Manufacturing, Inc. Electric drive module
US11456239B2 (en) 2019-04-25 2022-09-27 American Axle & Manufacturing, Inc. Electric drive module
US11862543B2 (en) 2019-04-25 2024-01-02 American Axle & Manufacturing, Inc. Electric drive module
US11845328B2 (en) 2021-12-01 2023-12-19 American Axle & Manufacturing, Inc. Electric drive unit with motor assembly isolated from beaming loads transmitted through housing assembly

Also Published As

Publication number Publication date
CN112020817A (zh) 2020-12-01
CN112020817B (zh) 2023-10-03

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