WO2019072489A1 - Arbre creux de rotor intégrant un élément de pompe - Google Patents

Arbre creux de rotor intégrant un élément de pompe Download PDF

Info

Publication number
WO2019072489A1
WO2019072489A1 PCT/EP2018/074754 EP2018074754W WO2019072489A1 WO 2019072489 A1 WO2019072489 A1 WO 2019072489A1 EP 2018074754 W EP2018074754 W EP 2018074754W WO 2019072489 A1 WO2019072489 A1 WO 2019072489A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
rotor
end flange
pump
cooling medium
Prior art date
Application number
PCT/EP2018/074754
Other languages
German (de)
English (en)
Inventor
Holger Fröhlich
Andreas SIEWERT
Original Assignee
Continental Automotive Gmbh
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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2019072489A1 publication Critical patent/WO2019072489A1/fr

Links

Classifications

    • 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
    • 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
    • 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
    • H02K7/003—Couplings; Details of shafts

Definitions

  • Rotor hollow shaft with integrated pump element The invention relates to a rotor shaft with a hollow inte grated ⁇ pump element for cooling a rotor and / or stator of an electrical machine, in particular a drive device or a motor and / or generator.
  • the invention relates to a rotor that with at least one
  • Laminated core assembly equipped rotor hollow shaft according to the invention Furthermore, the invention relates to an electric machine with the rotor according to the invention. Furthermore, the invention relates to a method for cooling an electric machine, comprising the rotor according to the invention.
  • Drive devices in particular hybrid drive devices, are used to drive motor vehicles, with hybrid drive devices typically having an internal combustion engine and an electric machine.
  • the case acting as a motor and generator electric machine has a shaft with a rotor arranged on the shaft and a rotor surrounding fixedly arranged stator.
  • the stator and the rotor are disposed within a housing of the electric machine.
  • the hollow rotor shaft has a closed at both ends by end flanges cylinder jacket surrounding a shaft cavity, wherein a respective shaft journal is formed on the end flanges and wherein lenzapfen in one of the Wel ⁇ an inlet is provided through which a cooling liquid into the shaft cavity, and gets to the inner surface of the cylinder jacket.
  • dispensing ⁇ element is arranged, which receives the cooling fluid entering through the inlet, via a rotationally symmetrical deflection surface towards the inner surface of the cylinder jacket and outputs to the inner surface of a mouth region.
  • Cooling fluid must be supplied to the shaft cavity and that due to the rotationally symmetrical discharge surface within the shaft cavity no uniform cooling of the shaft cavity in the axial direction of the shaft cavity can be achieved.
  • the object is solved by the subject matters of the independent claims.
  • Advantageous embodiments of the invention are set forth in the dependent claims, the description and the drawings, wherein each feature, both individually and in combination, may constitute an aspect of the invention. All combinations, as well as isolated combi nations ⁇ between the features of the hollow rotor shaft, the rotor of the electric machine and / or method can be used together.
  • a rotor hollow shaft for a rotor of an electrical machine, comprising a cylindrical plate core carrier enclosed on both sides by a first end flange and a second end flange, which surrounds a shaft cavity, wherein an inlet opening is formed in the first end flange, and a pump element arranged inside the shaft cavity which is fluidly connected with the a ⁇ outlet opening and is arranged and formed that over the pump element, a cooling medium through the inlet opening can be sucked and be conveyed via an outlet opening of the pump element against an inner lateral surface of the cylinder derförmig formed lamination stack carrier.
  • the rotor hollow shaft has a cylindrical formed laminated core, which is closed on both sides at the mutually axially spaced end portions each with an end flange, so that a wave cavity is formed by the cylinder-shaped laminated core.
  • On the laminated core carrier is preferably in the longitudinal direction of the zy- Linderförmigen laminated core carrier arranged at least one laminated core to form the rotor.
  • an inlet opening is formed, via which a cooling medium can be fed to the shaft cavity.
  • the inlet opening is preferably formed in the axial direction of the rotor axis.
  • a pump element is arranged within the shaft cavity, which is fluidly connected to the inlet opening.
  • the pump element is arranged and formed such that the pump element sucks a coolant ⁇ medium via the inlet opening and conveyed via an outlet opening of the pump element against an inner circumferential surface of the cylinder-shaped laminated core carrier.
  • the cooling medium is sucked into the shaft cavity via the pump element arranged within the shaft cavity, so that no pump device arranged outside the rotor is required for the active transport of the cooling medium into the shaft cavity.
  • the space of the electric machine can be reduced by the formation of the hollow rotor shaft with the integrated pump element.
  • the cooling medium is conveyed to and / or against the inner circumferential surface and / or injected.
  • the cooling medium can preferably be directed to locations within the laminated core, which heat up very quickly or where a warming accumulates.
  • the cooling medium may preferably be a cooling liquid.
  • the cooling medium is an oil, an oil foam, a spray oil and / or a transmission oil.
  • the cooling medium is electrically non-conductive and / or an electrically non-conductive oil.
  • the pump element is a self-priming pump element, in particular a centrifugal pump.
  • the self-priming pump element is preferably coupled to the first end flange such that a negative pressure in the shaft cavity is generated by a rotation of the hollow rotor shaft via the pump element, so that the pump element sucks the cooling medium via the inlet opening.
  • the cooling medium can be sucked in via the inlet opening in a simple manner.
  • the pump element has a passage element which has a first end portion and a second end portion spaced apart from the first end portion in the axial direction, the first end portion is fluidly connected to the inlet opening, and the second end portion is closed, wherein between the first end portion and the second end portion at least one passage opening is ⁇ forms, and on the passage element in the region of
  • Passage opening a pump impeller is arranged.
  • the formation of a centrifugal pump is indicated, which is arranged within the shaft cavity and connected to the first end flange and / or clamped in this.
  • the passage element a Having passage opening. It is usually provided that the passage element has a plurality of passage openings, which are arranged spaced from each other in the circumferential direction.
  • a preferred embodiment of the invention provides that the pump impeller has at least two spaced-apart impeller disks and a plurality of arranged between the impeller disks Laufradschauffein, wherein the impeller disks are rotatably mounted on the on ⁇ leitelement.
  • the Laufradschauffein can have a rectilinear but also a slightly curved course in the circumferential direction.
  • the impeller blades are arranged at a spacing from each other in the circumferential direction at regular intervals.
  • the pump element may be connected exclusively to the first end flange.
  • An advantageous development of the invention is that the second end portion of the pass-through element is guided to the second end flange and arranged in this and / or rotatably connected thereto. In this way, the rigidity of the passage element and the positional stability of the pump impeller arranged on the passage element can be increased.
  • a wall element is provided between the at least one passage opening and the second end section. arranged and / or formed within the passage element.
  • the negative pressure which can be generated by the pump impeller can thus be concentrated in the passage element via the wall element in such a way that the cooling medium is sucked in via the inlet opening.
  • the pump element and / or the pump impeller is arranged at any point in the axial direction of the rotor within the shaft cavity.
  • An advantageous development of the invention provides that the pump element and / or the pump impeller is arranged centrally in the shaft cavity in the axial direction of the shaft cavity.
  • the heat accumulates on the laminated core carrier laminated core due to the magnetic field between the rotor and the stator and a rotation of the rotor relative to the stator in the middle of at least one laminated core, while in the edge regions, the heat flows faster or cooled more easily can be.
  • the outlet opening of the pump element is aligned in the radial direction in the direction of the hotspot of the laminated cores, so that can be effectively cooled via the pump element of the laminated core and thus arranged on the laminated core carrier laminated core.
  • An advantageous development of the invention is that the first end flange on a side facing away from the shaft cavity has a first shaft journal and / or the second end flange on a side facing away from the shaft cavity a second shaft journal.
  • the respective shaft journals are aligned in the axial direction of the shaft cavity and serve to support the rotor hollow shaft in a shaft bearing.
  • a preferred embodiment of the invention provides that the inlet opening is guided by the first shaft journal.
  • the first end flange and / or the second end flange has at least one recess which is arranged and designed such that a running on the inner circumferential surface of the cylindrical laminated core carrier cooling medium can escape via the recess from the shaft cavity ,
  • the cooling medium can preferably be ⁇ against a winding of the rotor and / or the hollow rotor shaft be ⁇ promotes and / or injected to cool the winding, in particular the winding heads, the stator at least partially.
  • the at least one recess is arranged and / or formed on an outer peripheral surface of the first end flange and / or the second end flange.
  • the Aus ⁇ recess is thus a recess extending from the outer circumference in the radial direction inwards.
  • a plurality of circumferentially spaced apart ⁇ arranged recesses are provided.
  • a partial explanatory front ⁇ development of the invention provides that the cylinder-shaped laminated core carrier facing on a first end flange first end portion and / or has on a side facing the second end flange second end portion of at least one trained in the radial direction of the opening so that on the inner circumferential surface of the cylindrical-shaped laminated core carrier extending cooling ⁇ medium can escape through the opening of the shaft cavity.
  • an alternative possibility is provided that cooling medium from the shaft cavity through the opening in the direction of the windings of a stator surrounding the rotor transport. In this way, the windings of the stator can be efficiently cooled.
  • the invention also relates to a rotor comprising the rotor shaft according to the invention, which is equipped with at least one laminated core.
  • the invention relates to an electric machine, in particular for a drive train of a motor vehicle, with the rotor according to the invention.
  • the invention relates to a use of the hollow rotor shaft according to the invention for cooling a stator and / or a rotor of an electric machine.
  • the invention also relates to a method for cooling an electric machine, comprising the rotor according to the invention, comprising the steps:
  • the cooling medium is sucked in via the pump element arranged within the shaft cavity. In this way, no pump outside the rotor is required, which actively pumps the cooling medium into the shaft cavity. Thus, the space of the electric machine can be reduced.
  • the pump element conveys the sucked-in cooling medium via an outlet opening of the pump element and / or via the runner. Radschauffein the pump impeller radially outward against the inner surface of the laminated core carrier. The cooling medium bounces against the inner circumferential surface, whereby the laminated core carrier and a laminated core arranged on the laminated core carrier can be cooled by impingement cooling.
  • the conveyed against the inner circumferential surface cooling medium escapes via at least one arranged in the first end flange and / or the second end flange recess from the shaft cavity and is injected against winding heads of the rotor at least partially surrounding stator.
  • the cooling medium can be removed from the shaft cavity such that it also cools the winding heads of the stator, whereby an efficient cooling of the stator can be effected.
  • FIG. 2 is a schematic sectional view through the rotor, wherein the pump element as a centrifugal pump with a
  • 3b is a view of the pump impeller
  • FIG. 5a shows a view of the hollow rotor shaft
  • Fig. 5b shows a view of the passage element with the first
  • FIG. 1 shows a sectional illustration of a rotor 10 which comprises a hollow rotor shaft 12 with an integrated pump element 14.
  • the rotor hollow shaft 12 has a cylindrical shaped laminated core 16, which is closed on both sides at the mutually axially spaced end portions 18, 20 each with a front flange 22, 24, so that a wave cavity 26 is formed by the cylindrically shaped laminated core 16.
  • On the laminated core 16 at least one laminated core 28 is arranged in the longitudinal direction of the cylinder-shaped laminated core 16 in order to form the rotor 10.
  • an inlet opening 30 is formed, via which a cooling medium 32 can be fed to the wave cavity 26.
  • the pump element 14 is arranged, wherein the pump element 14 is fluidly connected to the inlet port 30.
  • the pump element 14 is arranged and formed such that the pump element 14 sucks the cooling medium 32 via the inlet opening 30 and against an inner circumferential surface 34 of the cylinder-shaped
  • Cartridge package carrier 16 transported.
  • the cooling medium 32 is sucked into the Wel ⁇ lenhohlraum 26 via the disposed within the shaft cavity 26 pump element 14, so that no outside of the rotor 10 arranged and / or trained pump means for active transport of the cooling medium 32 in the wave cavity 26 is required.
  • the space of a rotor 10 having electric machine by the formation of the hollow rotor shaft 12 with the integrated pump element 14 re ⁇ cuted.
  • Very high heat transfer rates can be achieved around the center of the impact location, which decrease with increasing radial distance from the center of the impact location be directed to locations within the laminated core 16, which heat up very quickly or in which a warming accumulates.
  • a uniform cooling of the rotor 10th be allowed to reduce contact stresses of the rotor bearing due to a large temperature gradient between an inner bearing ring and an outer bearing. Due to the centrifugal force of the around the rotor axis 36 of the
  • the cooling medium 32 is pressed against the inner circumferential surface 34 and guided in the direction of the end portions 18, 20 of the laminated core 16.
  • recesses 38 are arranged on a circumferential surface of the respective end flanges. In this way, the cooling medium 32 can exit via the recesses 38 from the shaft cavity 26 and preferably against windings of a rotor 10 surrounding the stator (not shown) to cool them.
  • the cooling medium 32 emerging from the shaft cavity 26 via the recesses 38 is supplied to a cooling circuit 40 so as to be able to supply this again to the pump element 14, or so that it can be sucked in again via the pump element 14.
  • FIG 2 the known from Figure 1 rotor 10 is shown, wherein the pump element 14 is formed as a self-priming centrifugal pump ⁇ .
  • the pump element 14 has a passage element 42, which has a first end portion 44 and one to the first
  • End portion 44 in the axial direction spaced second end portion 46 has.
  • the first end section 44 is fluidly connected to the inlet opening 30, so that the cooling medium 32 can be inserted into the passage element 42 via the inlet opening 30 and the first end section 44.
  • the second end portion 46 is closed. Between the first end portion 44 and the second end portion 46 at least one passage opening 48 is formed, and on the through Guide element 42, a pump impeller 50 is disposed in the region of the passage opening 48.
  • the passage element 42 has only one passage opening 48. It is usually provided that the passage element 42 has a plurality of passage openings 48, which are arranged spaced apart in the circumferential direction.
  • FIGS. 3 a, 3 b and 3 c the pump element 14 designed as a centrifugal pump is shown in detail.
  • the Pum ⁇ penlaufrad 50 has two mutually spaced impeller disks 54 and a plurality of arranged between the impeller disks 54 Laufradschauffein 56, wherein the impeller disks 54 rotatably on the pass-through element 42 are arranged on ⁇ .
  • the impeller blades 56 have a slightly curved or arc-shaped course in the circumferential direction.
  • the outlet openings 52 of the pump element 14 are formed on the outer edge of the pump impeller 50 between the respective impeller blades 56 and the impeller disks 54.
  • FIG. 4 shows the rotor 10 known from FIG. 2. In contrast to the rotor 10 shown in FIG.
  • Passing element 42 guided with the second end portion 46 to the second end flange 24 and stored in this or rotatably connected thereto. In this way, the rigidity of the passage element 42 and the positional stability of the pump impeller 50 arranged on the passage element 42 can be increased.
  • the negative pressure that can be generated by the pump impeller 50 can thus be concentrated via the wall element 58 within the passage element 42 such that the cooling medium 32 can be sucked in via the inlet opening 30.
  • the pump element 14 or the pump impeller 50 is arranged centrally in the shaft cavity 26 in the axial direction of the shaft cavity 26.
  • the heat accumulates in the laminated core 28 disposed on the laminated core 16 as a result of rotation of the rotor 10 relative to the stator (not shown) in the center of the laminated core, while in the edge regions of the laminated core 28, the heat flow off faster or cooled more easily can.
  • the pump impeller 50 and the off ⁇ openings 52 of the pump impeller 50 are in the present embodiment in the radial direction in the direction of
  • the first end flange 22 has on a side facing away from the shaft cavity 26 a first shaft journal 60 and / or the second end flange 24 has on a side facing away from the shaft cavity 26 a second shaft journal 62.
  • the first shaft journal 60 and the second shaft journal 62 are respectively aligned in the axial direction of the shaft cavity 26 and serve to support the rotor hollow shaft 12 in a shaft bearing.
  • the inlet opening 30 is guided by the first shaft journal 60.
  • FIG. 5 a shows a view of the rotor hollow shaft 12 and FIG.
  • FIGS. 5 b illustrates a view of the passage element 42 with the end flanges 22, 24.
  • the first end flange 22 and the second end flange 24 each have on an outer circumferential surface a plurality of circumferentially spaced-apart arranged recess 38.
  • the recesses 38 effect that at the end regions 18, 20 of the laminated core 16 between the inner circumferential surface 34 and the end flanges 22, 24 in the region of the recesses 38, a gap is formed, via which the conveyed to the inner surface 34 cooling medium 32 from the shaft cavity 26 can escape.
  • the cooling medium 32 may preferably be conveyed and / or sprayed against a winding of the stator 10 surrounding the rotor 10 (not shown) to at least partially cool the windings of the stator.
  • FIG. 6 shows an electric machine 64 which has a gear 68 and an electric motor 70 in a housing 66, the electric motor 70 comprising the rotor 10 and a stator 72 surrounding the rotor 10 at least in sections.
  • the rotor 10 is rotatably mounted about the rotor axis 36 in the housing 66 relative to the stator 72 via shaft bearings 74, which engage the first shaft journal 60 and the second shaft journal 62.
  • the second shaft journal 62 is connected to a transmission input shaft 76. coupled, so that a rotational movement of the rotor 10 is transferable to the transmission 68.
  • the cooling medium 32 which is a transmission oil in the present embodiment, via the arranged in the first shaft journal 60 and the first end flange 22 inlet opening 30 of the shaft cavity 26 disposed in the self-priming pump element 14, which is designed as a centrifugal pump sucked and via the outlet opening 52 of the pump element 14 and / or over the
  • the cooling medium 32 is ejected from the recesses 38 in such a way on the winding heads 78 of the stator 72, whereby they are also cooled.
  • the cooling medium 32 is supplied to a circulation cooling circuit, so that it can be used for re-cooling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un arbre creux (12) de rotor pour un rotor (10) d'un moteur électrique (64). L'arbre creux comprend un support de paquet de tôles (16) réalisé en forme de cylindre se terminant de part et d'autre par une première bride latérale (22) et une seconde bride latérale (24), lequel entoure un espace creux (26) d'arbre. Une ouverture d'entrée (30) est réalisée dans la première bride latérale (22). Un élément de pompage (14) disposé à l'intérieur de l'espace creux (26) d'arbre est en communication fluidique avec l'ouverture d'entrée (30) et est disposé et réalisé de telle manière que par l'intermédiaire de l'élément de pompage (14), un milieu de refroidissement (32) peut être aspiré par l'intermédiaire de l'ouverture d'entrée (30) et peut être refoulé par l'intermédiaire d'une ouverture de sortie (52) de l'élément de pompage (14) à l'encontre d'une surface enveloppante (34) intérieure du support de paquet de tôles (16) réalisé en forme de cylindre.
PCT/EP2018/074754 2017-10-13 2018-09-13 Arbre creux de rotor intégrant un élément de pompe WO2019072489A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017218351.9A DE102017218351A1 (de) 2017-10-13 2017-10-13 Rotorhohlwelle mit integriertem Pumpenelement
DE102017218351.9 2017-10-13

Publications (1)

Publication Number Publication Date
WO2019072489A1 true WO2019072489A1 (fr) 2019-04-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/074754 WO2019072489A1 (fr) 2017-10-13 2018-09-13 Arbre creux de rotor intégrant un élément de pompe

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DE (1) DE102017218351A1 (fr)
WO (1) WO2019072489A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022082788A1 (fr) * 2020-10-23 2022-04-28 华为数字能源技术有限公司 Moteur électrique, dispositif de commande de moteur électrique, système d'échange de chaleur et procédé de commande
US20220247271A1 (en) * 2021-02-04 2022-08-04 Volvo Car Corporation Electric machine
DE102021111906A1 (de) 2021-05-07 2022-11-10 Bayerische Motoren Werke Aktiengesellschaft Rotorwellenanordnung für eine elektrische Maschine sowie elektrische Maschine
US20230034673A1 (en) * 2019-12-31 2023-02-02 Punch Powertrain N.V. Motor and method for cooling a motor
EP4404434A1 (fr) * 2023-01-17 2024-07-24 Volkswagen Aktiengesellschaft Machine électrique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020107376B4 (de) 2020-03-18 2021-11-25 Schaeffler Technologies AG & Co. KG Kühlvorrichtung mit einem durch einen Kühlmittelstrom rotatorisch antreibbaren Verteilerring; sowie elektrische Antriebseinheit
DE102020114604A1 (de) 2020-06-02 2021-12-02 Schaeffler Technologies AG & Co. KG Elektrische Rotationsmaschine und Antriebsanordnung
DE102021204200A1 (de) 2021-04-28 2022-11-03 Mahle International Gmbh Hohle Innenwelle für einen Rotor einer elektrischen Maschine

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DE1162466B (de) * 1961-07-31 1964-02-06 Licentia Gmbh Zusammenbau von geblechten Laeufern elektrischer Maschinen mit stirnseitig angesetzten Wellenstuempfen
US20030146667A1 (en) * 2002-02-06 2003-08-07 Nissan Motor Co., Ltd. Cooling method and structure for a rotation object
JP2011097784A (ja) * 2009-10-30 2011-05-12 Aisin Aw Co Ltd 回転電機用ロータ
DE102013200450A1 (de) * 2013-01-15 2014-07-17 Robert Bosch Gmbh Luftkühlkreislauf über Rotorwelle für elektrische Maschinen
DE102014107845A1 (de) 2014-06-04 2015-12-17 Thyssenkrupp Presta Teccenter Ag Ölverteilelement
DE102015205724A1 (de) * 2014-12-01 2016-06-02 Thyssenkrupp Presta Teccenter Ag Kühlsystem eines elektrischen Antriebes
DE102015223631A1 (de) * 2015-11-30 2017-06-01 Thyssenkrupp Ag Gebaute Rotorhohlwelle mit Kühlmediumverteilelement
WO2017162546A1 (fr) * 2016-03-23 2017-09-28 Thyssenkrupp Presta Teccenter Ag Segment de rotor d'une machine électrique

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CN106451915B (zh) * 2016-08-26 2018-10-30 中国船舶重工集团公司第七一二研究所 一种外转子永磁电机定子

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Publication number Priority date Publication date Assignee Title
DE1162466B (de) * 1961-07-31 1964-02-06 Licentia Gmbh Zusammenbau von geblechten Laeufern elektrischer Maschinen mit stirnseitig angesetzten Wellenstuempfen
US20030146667A1 (en) * 2002-02-06 2003-08-07 Nissan Motor Co., Ltd. Cooling method and structure for a rotation object
JP2011097784A (ja) * 2009-10-30 2011-05-12 Aisin Aw Co Ltd 回転電機用ロータ
DE102013200450A1 (de) * 2013-01-15 2014-07-17 Robert Bosch Gmbh Luftkühlkreislauf über Rotorwelle für elektrische Maschinen
DE102014107845A1 (de) 2014-06-04 2015-12-17 Thyssenkrupp Presta Teccenter Ag Ölverteilelement
DE102015205724A1 (de) * 2014-12-01 2016-06-02 Thyssenkrupp Presta Teccenter Ag Kühlsystem eines elektrischen Antriebes
DE102015223631A1 (de) * 2015-11-30 2017-06-01 Thyssenkrupp Ag Gebaute Rotorhohlwelle mit Kühlmediumverteilelement
WO2017162546A1 (fr) * 2016-03-23 2017-09-28 Thyssenkrupp Presta Teccenter Ag Segment de rotor d'une machine électrique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230034673A1 (en) * 2019-12-31 2023-02-02 Punch Powertrain N.V. Motor and method for cooling a motor
WO2022082788A1 (fr) * 2020-10-23 2022-04-28 华为数字能源技术有限公司 Moteur électrique, dispositif de commande de moteur électrique, système d'échange de chaleur et procédé de commande
US20220247271A1 (en) * 2021-02-04 2022-08-04 Volvo Car Corporation Electric machine
US11824425B2 (en) 2021-02-04 2023-11-21 Volvo Car Corporation Electric machine
DE102021111906A1 (de) 2021-05-07 2022-11-10 Bayerische Motoren Werke Aktiengesellschaft Rotorwellenanordnung für eine elektrische Maschine sowie elektrische Maschine
EP4404434A1 (fr) * 2023-01-17 2024-07-24 Volkswagen Aktiengesellschaft Machine électrique

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