EP4305738A1 - Machine électrique tournante pour système de transmission - Google Patents

Machine électrique tournante pour système de transmission

Info

Publication number
EP4305738A1
EP4305738A1 EP21714300.7A EP21714300A EP4305738A1 EP 4305738 A1 EP4305738 A1 EP 4305738A1 EP 21714300 A EP21714300 A EP 21714300A EP 4305738 A1 EP4305738 A1 EP 4305738A1
Authority
EP
European Patent Office
Prior art keywords
bearing
electric machine
rotary electric
bracket
passage
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.)
Pending
Application number
EP21714300.7A
Other languages
German (de)
English (en)
Inventor
Jian Wang
Guodong Yu
Jacques Verot
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.)
Shanghai Valeo Automotive Electrical Systems Co Ltd
Valeo Equipements Electriques Moteur SAS
Original Assignee
Shanghai Valeo Automotive Electrical Systems Co Ltd
Valeo Equipements Electriques Moteur SAS
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 Shanghai Valeo Automotive Electrical Systems Co Ltd, Valeo Equipements Electriques Moteur SAS filed Critical Shanghai Valeo Automotive Electrical Systems Co Ltd
Publication of EP4305738A1 publication Critical patent/EP4305738A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/124—Sealing of shafts
    • 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

Definitions

  • the invention relates to a rotary electrical machine for a transmission system.
  • French patent application FR3086124 A1 discloses a rotary electric machine able to be fixed to a transmission system, notably to a gearbox, the rotary electric machine having an axis of rotation and comprising:
  • a shaft comprising a first end, the first end being free and comprising a driving element able to drive a rotary element of the transmission system
  • a first bearing notably a first rolling bearing, mounted in the first bracket and guiding the rotation of the shaft
  • a second bearing notably a second rolling bearing, mounted in the second bracket and guiding the rotation of the shaft
  • the shaft comprises a sealing land axially between the first bearing and the shaft driving element, the first seal being in contact with the sealing land.
  • the seal protects the inside of the electric machine from the ingress of liquid such as a transmission system lubricating liquid.
  • liquid such as a transmission system lubricating liquid.
  • the presence of such a seal leads to an increase in the distance between the first bearing and the driving element and therefore leads to a significant length of overhang for the driving element.
  • This length of overhang causes significant bending of the shaft under the effect of radial forces on the driving element. These radial forces are generated for example by the transmission of a torque by gear meshing in instances in which the driving element is a gear, or by the tension in a belt in another instance in which the driving element is a belt drive pulley.
  • the significant bending of the shaft may lead to problems with the operation of the transmission system, notably to the generation of noise and/or to excessive wear.
  • the significant bending of the shaft may also lead to problems with the operation of the rotary electric machine by causing the air gap between the rotor and the stator to vary.
  • the present invention seeks to overcome all or some of these disadvantages.
  • the invention relates to a rotary electric machine able to be fixed to a transmission system, notably to a gearbox, the rotary electric machine having an axis of rotation and comprising:
  • a shaft comprising a first end, the first end being free and comprising a driving element able to drive a rotary element of the transmission system
  • a first bearing notably a first rolling bearing, mounted in the first bracket and guiding the rotation of the shaft
  • a second bearing notably a second rolling bearing, mounted in the second bracket and guiding the rotation of the shaft
  • the shaft comprises a sealing land axially between the first bearing and the rotor, the first seal being in contact with the sealing land.
  • Such positioning of the sealing land makes it possible to reduce the distance between the first bearing and the driving element. Specifically, because the first seal is not between the first bearing and the driving element, there is no need to provide a space for the first seal between the driving element and the first bearing. It is thus possible to bring the driving element closer to the first bearing and thus reduce the length of overhang of the driving element. This therefore makes it possible to reduce the bending of the shaft under the effect of radial forces on the driving element. The operation of the machine is thus improved by reducing the noise and/or the wearing of the machine, and particularly of the driving element. The variations in the air gap between the rotor and the stator are also reduced.
  • the rotary electric machine comprises a first passage able to guide a lubricant of the transmission system into a lubricating space formed between the first bearing and the first seal.
  • Such a passage guides the transmission system lubricant towards a space between the bearing and the first seal.
  • the presence of the lubricant limits the friction between the first seal and the sealing land.
  • the wearing of the first seal and of the sealing land can be reduced.
  • the first passage comprises a first hole formed in the first bracket.
  • first hole formed in the first bracket for the first passage means that the oil can be guided towards the lubricating space while at the same time limiting modifications at the interface between the first bearing and the first bracket.
  • the use of such a hole also makes it possible to have a first-passage inlet and a first-passage outlet which are at different radial positions with respect to the axis of rotation of the rotary electric machine.
  • the first bracket comprises a first bearing land in which the first bearing is mounted.
  • the first passage comprises a first groove formed in the first bearing land.
  • the rotary electric machine comprises a second passage able to allow the transmission-system lubricant to exit the lubricating space.
  • the use of such a second passage improves the flow of lubricant in the lubricating space. Because the lubricant is able to exit the lubricating space towards the transmission system, the risk of a build-up of impurities in the lubricating space is reduced. This reduction in the build-up of impurities limits the wearing of the first seal and of the sealing land and therefore improves the reliability of the rotary electric machine.
  • the lubricant may for example be filtered if necessary using a filtration system belonging to the transmission system.
  • the second passage comprises a second hole formed in the first bracket.
  • a second hole formed in the first bracket for the second passage means that the oil can be guided away from the lubricating space while at the same time limiting modifications at the interface between the first bearing and the first bracket.
  • the use of such a hole also makes it possible to have a second-passage inlet and a second-passage outlet which are at different radial positions with respect to the axis of rotation of the rotary electric machine.
  • the second passage comprises a second groove formed in the first bearing land.
  • the first passage comprises a first outlet opening into the lubricating space and the second passage comprises a first inlet opening into the lubricating space, the first inlet being located vertically below the first outlet so as to be able to contribute towards the transmission-system lubricant exiting the lubricating space under the effect of gravity.
  • Such a relative position of the first outlet of the first passage in relation to the first inlet of the second passage improves the flow of lubricant in the lubricating space.
  • the first seal is borne by the first bracket.
  • a first seal borne by the first bracket reduces the cost of the rotary electric machine. This is because the absence of an intermediate component between the seal and the first bracket reduces the number of components of the rotary electric machine.
  • the rotary electric machine comprises a retaining ring, the retaining ring comprising a second land, the first seal being fixed, notably by force-fitting, to the second land.
  • the retaining ring comprises a cylindrical part and a discoid part, the second land being situated radially on the inside of the cylindrical part, the discoid part being fixed to the first bracket notably using a screw.
  • a second seal notably an O-ring seal, is interposed between the retaining ring and the first bracket.
  • the retaining ring bears axially against the first bearing.
  • This feature contributes to axial attachment of the first bearing in the first bracket.
  • the first bearing is a first rolling bearing comprising an outer ring, the retaining ring bearing against the outer ring.
  • the first passage and/or the second passage respectively comprise a first opening, notably a first slot, and a second opening, notably a second slot, which are formed in the retaining ring.
  • the first opening and the second opening which are formed in the retaining ring allow the lubricant to flow through the retaining ring.
  • the first seal is a lip seal.
  • the invention also relates to a rotary electric machine able to be fixed to a transmission system, notably to a gearbox, the rotary electric machine having an axis of rotation and comprising:
  • a shaft comprising a first end, the first end being free and comprising a driving element able to drive a rotary element of the transmission system
  • a first bearing notably a first rolling bearing, mounted in the first bracket and guiding the rotation of the shaft
  • a second bearing notably a second rolling bearing, mounted in the second bracket and guiding the rotation of the shaft
  • first bearing is situated axially between a sealing land and the driving element, the first seal being in contact with the sealing land.
  • Such positioning of the first bearing makes it possible to reduce the distance between the first bearing and the driving element. Specifically, because the first seal is not between the first bearing and the driving element, there is no need to provide a space for the first seal between the driving element and the first bearing. It is thus possible to bring the driving element closer to the first bearing and thus reduce the length of overhang of the driving element. This therefore makes it possible to reduce the bending of the shaft under the effect of radial forces on the driving element. The operation of the machine is thus improved by reducing the noise and/or the wearing of the machine, and particularly of the driving element. The variations in the air gap between the rotor and the stator are also reduced.
  • the rotor may comprise any number of pairs of poles, for example six or eight pairs of poles.
  • the rotary electric machine may have a stator having a polyphase electric winding, for example formed of wires or of conducting bars connected to one another.
  • the rotary electric machine may comprise a power electronics component able to be connected to the on-board network of a vehicle.
  • This power electronics component for example comprises an inverter/rectifier allowing a vehicle on-board network to be charged, or which can be electrically powered by this network, according to whether the rotary electric machine is operating as a motor or as a generator.
  • FIG. 1 depicts a schematic part view in section of a rotary electric machine
  • FIG. 2 depicts a schematic part view in section of a rotary electric machine according to a first embodiment of the invention
  • FIG. 3 depicts another schematic part view in section of the rotary electric machine of Figure 2
  • FIG. 4 depicts a schematic part view of the rotary electric machine of Figure 2
  • FIG. 5 depicts another schematic part view of the rotary electric machine of Figure 2.
  • Figure 1 depicts a schematic part view in section of a rotary electric machine 1 having an axis of rotation A.
  • the rotary electric machine 1 comprises a stator 2 and a rotor 3 inside a casing 41.
  • the rotor 3 is able to interact with the stator 2.
  • the casing 41 comprises for example a first bracket 6, a second bracket 5 and a tubular spacer 7.
  • the tubular spacer 7 is for example clamped between the first bracket 6 and the second bracket 5, for example using through-bolts, not depicted, between the first bracket 6 and the second bracket 5.
  • the stator 2 is fixed inside the casing 41, for example tightly fitted into the tubular spacer 7.
  • the tubular spacer comprises a cooling chamber in which a liquid coolant circulates.
  • the stator comprises a stator body 9 and a winding 8.
  • the stator body 9 comprises for example a first stack of magnetic laminations.
  • the winding 8 comprises electrical conductors of which an active part passes through slots formed in the stator body 9 and a connecting part or winding overhang is formed outside of the slots.
  • the winding 8 is for example a winding of the hairpin-winding type.
  • the rotor 3 is fixed on a shaft 4 with axis of rotation A.
  • the shaft 4 is guided in rotation by a first bearing 12 mounted in the first bracket 6 and a second bearing 11 mounted in the second bracket 5.
  • the shaft 4 comprises a first end 37.
  • the first end 37 is free and comprises a driving element 13.
  • the shaft 4 may comprise several elements as in the embodiment depicted in the figures.
  • the shaft for example comprises an elongate element 52 oriented along the axis of rotation A, and a pinion 53 used as a driving element 13.
  • the first end is free in so far as it is not guided by an additional bearing with respect to the casing 41 of the rotary electric machine 1 or with respect to a casing of the transmission system fixed to the casing 41 of the rotary electric machine 1.
  • the driving element 13 is, for example, fixed to the elongate element 52 using a screw (not depicted) screwed into a threaded hole 28.
  • the first bearing 12 is a rolling bearing of which the inner ring bears against a first shoulder 31 of the elongate element 52 of the shaft 4. This bearing pressure is afforded for example by the tightening of the screw, the driving element 13 bearing against the inner ring of the rolling bearing for example via a ring 30 as the screw is tightened.
  • a rotational connection between the elongate element 52 and the driving element 13 is afforded for example by a system of splines 29.
  • a rotational connection between the elongate element 52 and the driving element 13 is afforded for example using a key.
  • the driving element is a pulley able to drive a belt.
  • the driving element is a sprocket wheel able to drive a chain.
  • the shaft comprises an elongate element oriented along the axis of rotation A, and in which the driving element 13 is formed as an integral part.
  • the driving element 13 is formed as an integral part.
  • meshing teeth are machined at the first end 37 of the shaft 4.
  • the first bearing 12 is, for example, a first rolling bearing, particularly a ball bearing.
  • the second bearing 11 is, for example, a second rolling bearing, particularly a ball bearing.
  • the first bearing is a plain bearing.
  • the second bearing is a plain bearing.
  • the rotary electric machine 1 further comprises a first seal 14.
  • the first seal 14 contributes to sealing between the first bracket 6 and the shaft 4.
  • the shaft 4 comprises a sealing land 42.
  • the first seal 14 is in contact with the sealing land 42.
  • the seal may slide over the sealing land 42 as the shaft 4 rotates.
  • the sealing land 42 is axially between the first bearing 12 and the rotor 3.
  • the first seal 14 is, for example, a lip seal.
  • the shaft 4 comprises a rotor land 38 to which the rotor is attached and a third bearing land 39 in contact with the first bearing 12.
  • the sealing land 42 is axially between the third bearing land 39 and the rotor land 38.
  • the shaft 4 comprises a fourth bearing land 40 in contact with the second bearing 11.
  • the rotary electric machine 1 is for example fixed to the transmission system 50.
  • the transmission system 50 for example a mechanical reducer, a variable-speed drive or a gearbox comprises a housing.
  • One wall 51 of the first bracket 6 forms, for example, part of an internal envelope of the housing of the transmission system 50.
  • the wall 51 may therefore for example be in contact with a lubricant of the transmission system 50.
  • lubricant of the transmission system 50 may be thrown against the wall 51 as internal components of the transmission system, notably gears, rotate.
  • the rotary electric machine 1 may comprise a first passage 18 able to guide a lubricant of the transmission system into a lubricating space 43 formed between the first bearing 12 and the first seal 14.
  • the first passage 18 may comprise a first hole 44 formed in the first bracket 6.
  • the first bracket 6 may comprise a first bearing land 45 in which the first bearing 12, for example the first rolling bearing, is mounted.
  • the first passage 18 comprises a first groove formed in the first bearing land 45.
  • the first passage 18 comprises a first hole formed in the first bracket 6, and a first groove formed in the first bearing land 45, the first hole opening into the first groove.
  • the first groove is, for example, closed at that one of its axial ends that is situated axially closest to the first end 37 of the shaft 4.
  • the rotary electric machine 1 may comprise a second passage 19 able to allow the transmission-system lubricant to exit the lubricating space 43.
  • the second passage 19 may comprise a second hole 46 formed in the first bracket 6.
  • the second passage 19 comprises a second groove formed in the first bearing land 45.
  • the second passage comprises a second hole formed in the first bracket 6, and a second groove formed in the first bearing land 45, the second hole opening into the second groove.
  • the second groove is, for example, closed at that one of its axial ends that is situated axially closest to the first end 37 of the shaft 4.
  • the first passage 18 may comprise a first outlet 20 opening into the lubricating space 43 and the second passage 19 comprises a first inlet 21 opening into the lubricating space 43.
  • the first inlet 21 is, for example, located vertically below the first outlet 20 so as to be able to contribute towards the transmission-system lubricant exiting the lubricating space 43 under the effect of gravity.
  • the first passage 18 may further comprise a second inlet 25 via which the lubricant enters the first passage 18.
  • the second inlet 25 is formed for example in the wall 51 of the first bracket 6.
  • the second inlet 25 is, for example, located vertically above the first outlet so as to encourage the lubricant to flow from the second inlet 25 towards the first outlet 20.
  • the wall 51 may comprise a rib 35.
  • the second inlet 25 is, for example, situated in the vicinity of the rib 35 so that the rib 35 guides the lubricant, notably lubricant trickling along the wall 51, towards the second inlet 25.
  • the distance between the rib 35 and the second inlet 25 is, for example, shorter than the longest dimension of the second inlet 25 measured in a plane perpendicular to the axis of rotation A.
  • the second passage 19 may further comprise a second outlet 26 via which the lubricant exits the second passage 19.
  • the second outlet 26 is formed for example in the wall 51 of the first bracket 6.
  • the second outlet is, for example, located vertically below the first inlet so as to encourage the lubricant to flow from the first inlet towards the second outlet.
  • the rotary electric machine 1 may comprise a plurality of first passages 18 and/or of second passages 19.
  • the rotary electric machine 1 may comprise a plurality of ribs 35.
  • the rotary electric machine 1 according to the embodiment depicted in the figures comprises two first passages 18, the second inlet 25 of each of them being situated in the vicinity of a rib 35.
  • the rotary electric machine 1 comprises, for example, a retaining ring 16.
  • the retaining ring 16 may comprise a second land 47.
  • the first seal 14 is, for example, fixed, notably by force-fitting, to the second land 47.
  • the retaining ring 16 comprises, for example, a cylindrical part 48 and a discoid part 49.
  • the second land 47 is, for example, situated radially on the inside of the cylindrical part 48.
  • the discoid part 49 is, for example, attached to the first bracket 6 notably using a screw 32.
  • the screw 32 is, for example, screwed into the threaded hole 33 formed in the first bracket 6.
  • the discoid part 49 is attached to the first bracket by three screws 32.
  • the rotary electric machine 1 may further comprise a second seal 27 interposed between the retaining ring 16 and the first bracket 6.
  • the second seal 27 is, for example, an O-ring seal.
  • the second seal 27 is situated in a space delimited at least in part by a face of the discoid part 49 that faces the first bracket 6, a face of the cylindrical part 48 that faces the first bracket 6, and a chamfer formed in the first bracket 6.
  • the second seal 27 is an O-ring seal housed in a groove formed on a face of the first bracket that faces the cylindrical part 48.
  • the retaining ring 16 notably the cylindrical part 48, may bear axially against the first bearing 12.
  • the first bearing 12 is a first rolling bearing comprising an outer ring.
  • the retaining ring 16 notably the cylindrical part 48, bears for example against the outer ring so as to axially block the outer ring between a second shoulder 54 formed on the first bracket 6 and the retaining ring 16.
  • the first passage 18 may comprise a first opening 22, notably a first slot, formed in the retaining ring 16.
  • the second passage 19 may comprise a second opening 23, notably a second slot, formed in the retaining ring 16.
  • the first seal 14 is borne by the first bracket 6.

Landscapes

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

Abstract

L'invention concerne une machine électrique tournante (1) apte à être fixée à un système de transmission, notamment à une boîte de vitesses, la machine électrique tournante (1) ayant un axe de rotation (A) et comprenant : - un stator (2), - un arbre (4) comprenant une première extrémité (37), la première extrémité (37) étant libre et comprenant un élément d'entraînement (13) apte à entraîner un élément rotatif du système de transmission, - un rotor (3), le rotor étant fixé à l'arbre (4), - un boîtier (41) dans lequel le stator (3) est fixé et comprenant un premier support (6) et un deuxième support (5), - un premier palier (12), notamment un premier palier à roulement, monté dans le premier support (6) et guidant la rotation de l'arbre (4), - un deuxième palier (11), notamment un deuxième palier à roulement, monté dans le deuxième support (5) et guidant la rotation de l'arbre (4), - un premier joint d'étanchéité (14) distinct du premier palier (12), le premier joint d'étanchéité (14) contribuant à l'étanchéité entre le premier support (6) et l'arbre (4), l'arbre (4) comprenant un plat d'étanchéité (42) axialement entre le premier palier (12) et le rotor (3), le premier joint d'étanchéité (14) étant en contact avec le plat d'étanchéité (42).
EP21714300.7A 2021-03-12 2021-03-12 Machine électrique tournante pour système de transmission Pending EP4305738A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/080420 WO2022188139A1 (fr) 2021-03-12 2021-03-12 Machine électrique tournante pour système de transmission

Publications (1)

Publication Number Publication Date
EP4305738A1 true EP4305738A1 (fr) 2024-01-17

Family

ID=75223013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21714300.7A Pending EP4305738A1 (fr) 2021-03-12 2021-03-12 Machine électrique tournante pour système de transmission

Country Status (3)

Country Link
EP (1) EP4305738A1 (fr)
CN (1) CN116964912A (fr)
WO (1) WO2022188139A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211715C2 (de) * 1982-03-30 1985-06-13 Siemens AG, 1000 Berlin und 8000 München Druckgeschmierte Wälzlageranordnung für die Welle einer geschlossenen elektrischen Maschine
CA2396279C (fr) * 1999-07-19 2005-05-17 Tokyo R & D Co., Ltd. Moteur et son procede de production
US20150295466A1 (en) * 2012-11-01 2015-10-15 Germán GONZÁLES BERNAL Method for sealing electric motors for the application of lubrication by mist
EP3217029B1 (fr) * 2016-03-11 2019-09-18 Danfoss Mobile Electrification Oy Structure de logement de palier
FR3086124B1 (fr) 2018-09-14 2021-05-28 Valeo Equip Electr Moteur Ensemble a machine electrique tournante et element reducteur evitant les infiltrations dans la machine electrique tournante

Also Published As

Publication number Publication date
WO2022188139A1 (fr) 2022-09-15
CN116964912A (zh) 2023-10-27

Similar Documents

Publication Publication Date Title
US11303174B2 (en) Rotor for an electric machine
JP4337800B2 (ja) ハイブリッド車両の動力伝達装置
EP1806825A2 (fr) Machine électrique tournante avec transmission et dispositif d'entraînement comprenant celle-ci
CN212677031U (zh) 马达单元
EP1593192A1 (fr) Systeme de refroidissement pour machine rotative
TWI792763B (zh) 動力傳遞裝置、馬達單元以及車輛
JP2022154481A (ja) モータユニット
JP2018014857A (ja) 電動モータの冷却構造
WO2022188139A1 (fr) Machine électrique tournante pour système de transmission
CN211557070U (zh) 一种外转子行星减速舵机以及机器人
KR20210130307A (ko) 전기모터 및 이를 구비한 전기차량
KR20210133350A (ko) 전기모터 및 이를 구비한 전기차량
JP5803165B2 (ja) 電動ポンプユニット
JP7248047B2 (ja) 歯車付電動機
US20240030765A1 (en) Rotor assembly for an electric motor
CN108028575B (zh) 装备有用于调整轴的角位置的器件的旋转电机
GB2160027A (en) A generator for vehicles
CN117999729A (zh) 旋转电机
KR102453150B1 (ko) 모터의 냉각구조
US20220231578A1 (en) Electrical machine comprising a cooling and or lubricating system having a wet chamber, motor vehicle having an electrical machine
WO2023074705A1 (fr) Machine électrique tournante
CN111219446B (zh) 电动机车的整合式动力模组
JP2018043682A (ja) インホイールモータ駆動装置
CN107949978B (zh) 具有优化冷却的旋转电机
JP2023006082A (ja) モータユニット

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230803

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)