EP3459157A1 - Elektrische maschine - Google Patents
Elektrische maschineInfo
- Publication number
- EP3459157A1 EP3459157A1 EP17715929.0A EP17715929A EP3459157A1 EP 3459157 A1 EP3459157 A1 EP 3459157A1 EP 17715929 A EP17715929 A EP 17715929A EP 3459157 A1 EP3459157 A1 EP 3459157A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor shaft
- rotor
- electric machine
- stator
- region
- 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.)
- Withdrawn
Links
- 239000002826 coolant Substances 0.000 claims abstract description 47
- 238000004804 winding Methods 0.000 description 23
- 238000001816 cooling Methods 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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
- 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
- H02K1/26—Rotor cores with slots for windings
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/168—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having single-cage rotors
-
- 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
Definitions
- the present invention relates to an electric machine comprising a stator, a rotor, wherein the rotor is rotatably mounted within the stator and has a rotor shaft, which is designed as a hollow shaft and by means of which a cavity is provided, which provides for receiving a coolant is, wherein the rotor shaft has at least one end portion at least two paragraphs.
- Electric machines comprise a fixed stator and a movable rotor, wherein the rotor in the most common design of an electric machine is mounted rotatably mounted within a ring-shaped stator.
- the stator of an electrical machine has a stator core and at least one stator winding arranged on the stator core.
- the stator winding is disposed in grooves provided thereon on the stator core. At the two end faces of the stator, more precisely the stator core, the winding heads of the stator windings are formed.
- the rotor of an electric machine designed as an asynchronous machine comprises a rotor core, a rotor cage and a rotor shaft.
- the rotor cage includes a plurality of conductor bars embedded in grooves on the outer periphery of the rotor core.
- the ends of the conductor bars protrude beyond the end faces of the rotor core and are electrically connected at the respective end face via a respective short-circuit ring.
- Electric machines asynchronous machines such as synchronous machines generate heat due to the dielectric loss during their operation.
- asynchronous machines in the region of the stator winding, in particular in the region of the respective winding head, and / or in the case of asynchronous machines in the region of the short-circuit rings of the rotor of the electric machine, there is a strong evolution of heat.
- a cooling device is usually provided in electrical machines, in particular the heavily heat-stressed points of the rotor and / or the stator, namely the winding heads on the end faces of the stator and / or the rotor and in asynchronous machines, the short-circuit rings on the end faces of the rotor, cools.
- Coolant circulates, for example, in a housing of the electric machine or in a rotor shaft designed as a hollow shaft, on which the rotor core of the electrical machine is arranged. Due to its heat capacity, the coolant absorbs the heat and transports it away.
- These solutions are usually carried out at a great distance from the highly heat-stressed areas of the stator and / or the rotor, such as the winding heads of the stator winding of the stator and / or the short-circuited rings of the rotor cage of the rotor.
- cooling devices which effect cooling of surfaces to be cooled of an electrical machine due to the evaporation of a coolant.
- the coolant is vaporized at the surface to be cooled and then recondensed again.
- the coolant is applied directly to the surfaces to be cooled of the stator and / or the rotor. sprayed.
- this cooling device concept usually does not involve cooling the rotor shaft of the rotor. If a rotor shaft cooling is realized within such a concept, it requires a second cooling circuit to meet the different requirements can.
- flooded electrical machines which offer the possibility to immerse at least part of the winding head of the stator winding of the stator and / or the short-circuiting rings of the rotor cage of the rotor in a coolant.
- the rotation of the electric machine causes a partial conveyance and atomization of the coolant within the housing of the electric machine.
- this type of cooling device does not guarantee uniform cooling.
- the document DE 10 2013 020 332 A1 describes, for example, an electric machine, in particular an asynchronous machine, with a stator, a rotor rotatable about a rotation axis relative to the stator and comprising a rotor shaft.
- the rotor shaft has a first channel extending axially over at least one longitudinal region.
- the channel is designed to be flowed through by a coolant.
- the first channel at least partially accommodates at least one line element extending at least in a partial region of the first channel.
- the line element has a second channel extending in the axial direction and permeable by coolant.
- the rotor shaft has in its circumferential surface bounding the first channel at least one outlet opening for guiding coolant out of the first channel to the surroundings of the rotor shaft.
- the first channel and the second channel are fluidly connected to one another via an axial throughflow opening of the conduit element.
- the coolant jet from the rotor shaft impinges directly on the short-circuit ring of the rotor via the outlet opening - cooling of the short-circuit ring of the rotor and the rotor shaft of the rotor is realized via the cooling device of the electric machine described in this document. Summary of the Invention It is an object of the invention to provide an alternative electrical machine characterized by improved cooling.
- an electric machine comprising a stator, a rotor, wherein the rotor is rotatably mounted within the stator and has a rotor shaft which is designed as a hollow shaft and by means of which a cavity is provided, which is provided for receiving a coolant wherein the rotor shaft has at least two shoulders on at least one end section, whereby at least three rotor shaft sections, namely a first rotor shaft section, a second rotor shaft section and a third rotor shaft section are formed with different diameters, wherein in the cavity of the rotor shaft in the region of the second rotor shaft section Flow element is arranged and wherein in the region of the second rotor shaft portion in the shell of the rotor shaft at least one radial outlet opening is formed, which fluidly connects the cavity of the rotor shaft with an outer region of the rotor shaft.
- the electric machine according to the invention comprises a stator and a rotor with a rotor shaft.
- the rotor of the electric machine according to the invention is rotatably mounted within the stator.
- the rotor shaft is designed as a hollow shaft and thus forms a cavity.
- the cavity serves to receive or guide a coolant.
- the rotor shaft has at least two shoulders on at least one end section.
- a flow element is arranged in the cavity of the rotor shaft in the region of the second rotor shaft section. Furthermore, according to the invention, at least one radial outlet opening is formed in the area of the second rotor shaft section in the jacket of the rotor shaft. The radial outlet opening serves for the fluid connection of the cavity of the rotor shaft to an outer region of the rotor shaft.
- the term "radial" corresponds to a direction normal to a longitudinal axis of the electric machine.
- axial corresponds to a direction along or parallel to the longitudinal axis of the electrical machine.
- the inventive design of the electric machine, the guided through the cavity of the rotor shaft coolant can be performed in a simple manner targeted and thus a particularly efficient cooling of the electric machine, in particular the rotor done. This results in reliable operation of the electrical machine over its service life.
- the cooling of the rotor of the electric machine is realized in a particularly simple manner, which is reflected on the one hand in a low installation cost and on the other in low production costs.
- the flow element is sleeve-shaped and has a central first opening and at least one second opening formed in the jacket of the flow element.
- the flow element is preferably arranged in the cavity of the rotor shaft so that the cavity of the rotor shaft is fluidly connected via the second opening of the flow element with the radial outlet opening in the shell of the rotor shaft and thus with the outer region of the rotor shaft.
- the coolant can thus enter into the radial outlet opening.
- the sleeve-shaped flow element preferably has a constriction, wherein the second opening of the flow element is formed in the region of the constriction of the flow element.
- the flow element is made of plastic, for example.
- the flow element can be produced for example by deep drawing or pressing in corresponding matrices.
- the electric machine preferably has an attachment element.
- the attachment element of the electric machine is preferably arranged on the rotor shaft in the region of the end section of the rotor shaft such that coolant exiting from the cavity of the rotor shaft via the exit opening can be guided at least partially over a rotor end side and a stator end side.
- the above-described arrangement of the attachment element on the rotor shaft allowed a targeted coolant flow over the rotor end face and on the stator front side of the electric machine.
- the attachment element can be fastened either as a separate component to the rotor shaft, or integrally with a component of the electrical machine, such as in the case of an asynchronous machine integrally formed with a short-circuit ring of the rotor.
- the attachment element is optionally formed integrally with the short-circuit ring of a rotor of an asynchronous machine, then it can be used in addition to the targeted guidance of coolant on the rotor front side, more precisely on the short-circuit ring, and on the Statorstirnseite, more precisely on the winding heads, also for
- the attachment element is formed substantially circular with a central third opening and a plurality of evenly spaced, radially extending tracks and / or channels.
- the formation of a central third opening allows easy positioning and attachment of the attachment element to the rotor shaft.
- a targeted guidance of the coolant over the end face of the rotor and the stator is effected by the formation of radially extending tracks and / or channels.
- the attachment element is formed substantially stepwise along a normal plane to the longitudinal axis of the electric machine in cross-section, with such a coolant-collecting section being formed in the region of the radial outlet opening.
- a coolant collecting section is formed in a simple manner, which collects coolant emerging from the radial outlet opening.
- a particularly efficient guidance of the coolant can take place via the stator end face, in particular the winding heads of the stator.
- the attachment element is made of plastic.
- An embodiment of the attachment element made of a different material, such as a composite material, or of a metallic material, such as steel is also conceivable.
- the attachment element made of plastic Due to the design of the attachment element made of plastic, the production of the attachment element is easy to implement. Furthermore, the formation of the attachment element made of plastic has a positive influence on the weight of the electrical machine see. The formation of the attachment element made of a solid material such as steel, a composite material, etc., can continue to have a positive effect on the strength, for example, of the short-circuit ring of the rotor of an asynchronous machine.
- FIG. 2 shows a sectional view of an electrical machine according to the invention along a sectional plane A-A according to FIG. 1 from a longitudinal axis.
- FIG. 3 shows a further sectional view of an electrical machine according to the invention along a sectional plane A-A according to FIG. 1.
- Fig. 4a shows a side view of a flow element.
- Fig. 4b shows a plan view of a flow element.
- Fig. 4c shows a perspective view of a flow element. shows an exploded view of an electrical machine according to the invention according to FIG. 1. shows a cross-sectional view of a attachment element. shows a sectional view of an electric machine with an integrally formed with a short-circuit ring attachment element. shows a detailed view of an electrical machine according to FIG. 7.
- the exemplary electric machine 1 as shown in FIGS. 1 to 3, in FIG. 5 and in FIGS. 7 and 8, is designed as an asynchronous machine and comprises a stator 2 and a rotor 3.
- a design of the electric machine according to the invention 1 as a synchronous machine is also conceivable.
- the stator 2 is formed substantially hollow cylindrical.
- the stator 2 comprises a stator core 26, namely a stator core, and a plurality of stator windings 27.
- the stator windings 27 are disposed in grooves provided thereon on the stator core 26.
- the stator windings 27 each have on the two Statorstirn- sides 25, 25 'of the stator 2 axially projecting winding heads 28. (FIGS. 2, 3, 7)
- axial corresponds to a direction along or parallel to a longitudinal axis 23 of the electric machine 1.
- radial corresponds to a direction normal to the longitudinal axis 23 of the electric machine.
- the rotor 3 is rotatably mounted within the stator 2 and comprises a rotor core 30, namely a rotor core, a rotor cage 31 and a rotor shaft 4.
- the rotor cage 31 of the rotor 3 has a plurality of conductor bars 32 which at their ends on the two rotor end faces 29th , 29 'are electrically connected via shorting rings 33.
- the rotor shaft 4 of the rotor 3 of the electric machine 1 is formed as a hollow shaft and therefore has a central cavity 5 from.
- the cavity 5 of the rotor shaft 4 extends axially over the entire length of the rotor shaft 4.
- the cavity 5 of the rotor shaft 4 is designed to guide a coolant, i. the rotor shaft 4 is formed by the coolant through-flow. (FIGS. 2, 3, 7)
- the rotor shaft 4 has at a first end portion 6 and at a second end portion 7 each two paragraphs, namely in each case a first paragraph 8, 8 'and a second paragraph 9, 9'.
- the rotor shaft 4 in three rotor shaft sections, namely in a first rotor shaft portion 10, 10 ', a second rotor shaft portion 1 1, 1 1' and a third rotor shaft portion 12, each formed with different diameters ,
- the diameter of the rotor shaft 4 in the region of the first rotor shaft section 10, 10 ' is greater than the diameter of the rotor shaft 4 in the region of the second rotor shaft section 11, 11' and the diameter of the rotor shaft section 11
- Rotor shaft 4 in the region of the second rotor shaft section 1 1, 1 1 ' is greater than the diameter of the rotor shaft 4 in the region of the third rotor shaft section 12.
- FIG. 2 With reference to FIG. 2, FIG. 3 or FIG. 7, viewed from left to right, the rotor shaft 4 is thus divided into a first rotor shaft section 10, a second rotor shaft section 11, a central third rotor shaft section 12, a further second rotor shaft section 11 '. and another first rotor shaft portion 10 '.
- the rotor shaft 4 has an axial inlet opening 34 in the region of the first end section 6, more precisely in the region of the first rotor shaft section 10, and an axial outlet opening 35 in the region of the second end section 7, more precisely the further first rotor shaft section 10 '. (FIGS. 2, 3, 7)
- the flow elements 13, 13 ' are each sleeve-shaped and each have a central first opening 15 and at least a plurality of openings 16 formed in the jacket of the respective flow element 13, 13'.
- the respective flow element 13, 13 ' is arranged in the cavity 5 of the rotor shaft 4 so that the cavity 5 of the rotor shaft 4 via the second openings 16 of the respective flow element 13, 13' with the respective radial outlet openings 14, 14 'in the shell of the rotor shaft 4 and thus fluidly connected to the outer region of the rotor shaft 4.
- the coolant guided through the cavity 5 of the rotor shaft 4 can be guided in a simple manner in a targeted manner, wherein partial coolant volume flows, namely one main volume flow 36 and several, the number at radial outlet openings 14, 14 'corresponding to many, secondary volume flows 37, 37' arise.
- partial coolant volume flows namely one main volume flow 36 and several, the number at radial outlet openings 14, 14 'corresponding to many, secondary volume flows 37, 37' arise.
- the main volume flow 36 and the secondary volume flows 37, 37 ' are indicated schematically by arrows.
- the main volume flow 36 leads from the inlet opening 34 of the rotor shaft 4 axially through the cavity 5 of the rotor shaft 4 to the outlet opening 35 of the rotor shaft 4.
- the main volume flow 36 thus essentially takes over the heat dissipation from the rotor 3 of the electric machine. 1 (Fig. 2, Fig. 3)
- the secondary volume flows 37, 37 'emerge from the respective radial outlet openings 14, 14' in the jacket of the rotor shaft 4 from the cavity 5 of the rotor shaft 4. (Fig. 2, Fig. 3)
- the exit velocity of the secondary volume flows 37, 37 'from the radial outlet openings 14, 14' depends on the system pressure within the cavity 5 of the rotor shaft 4 and thus of the main volume flow 36. Due to the arrangement of the respective flow element 13, 13 'in the respective region of the second rotor shaft section 1 1, 1 1 ', however, can also be formed in pressureless systems sufficient secondary volume flows 37, 37'.
- the proportion of the respective secondary volume flows 37, 37 ' can be set by the width of the second openings 16 in the jacket of the respective flow element 13, 13'.
- the main volume flow 36 / secondary volume flows 37, 37' ratio can be adjusted, wherein the speed of the secondary volume flows 37, 37 'is determined.
- the flow rate at the inlet opening 34 of the rotor shaft 4 is decisive for the quantity and / or the speed of the main volume flow 36 and the respective secondary volume flows 37, 37 ', the ratio between the flows, namely the main volume flow 36 and the respective secondary volume flows 37, 37 ', by introducing the respective flow element 13, 13' into the cavity 5 of the rotor shaft 4 is much less sensitive to changes in the flow rate at the inlet opening 34 of the rotor shaft 4. If the flow rate is increased, less turbulence at the respective division points of the main volume flow 36 and the respective Mauvolumenströ- men and the respective secondary volume flows 37, 37 'can be redirected more precisely. A reduction of the flow rate at the inlet opening 34 of the rotor shaft 4 has due to constant division ratios between the main volume flow 36 and the secondary volume flows 37, 37 'no adverse effect on the main volume flow 36th
- the coolant velocity of the main volume flow 36 and the secondary volume flows 37, 37 ' can thus be influenced in a targeted manner.
- the electric machine 1 also has two attachment elements 19, 19 '. (FIGS. 1 to 3 and FIGS. 5 to 8)
- An attachment element 19 is fixedly arranged on the rotor shaft 4 in the region in the region of the first end section 6 of the rotor shaft 4.
- the further attachment element 19 ' is fixedly arranged on the rotor shaft 4 in the region of the second end section 7 of the rotor shaft 4. (FIGS. 2, 3, 5, 7 and 8)
- the attachment elements 19, 19 ' are each designed such that from the cavity 5 of the rotor shaft 4 via the respective radial outlet openings 14, 14' exiting coolant at the respective end portions 6,7 of the rotor shaft 4 exiting coolant through the respective rotor end face 29, 29 ' and the respective stator end face 25, 25 'can be passed.
- the respective attachment element 19, 19 ' is formed essentially circular with a central third opening 17. (Fig. 5, Fig. 6)
- the attachment elements 19, 19 ' are each attached to the rotor shaft 4 via the central third opening 17.
- the respective attachment elements 19, 19 ' have a step-like cross-section. Furthermore, starting from the central third opening 17 of the respective attachment element 19, 19 'radially extending tracks 22 are formed. The tracks 22 are formed uniformly spaced with respect to the circumference of the respective attachment element 19, 19 '. Due to the step-like design of the respective attachment element 19, 19 ', a coolant collecting section 24 is formed in the region of the respective radial outlet openings 14, 14'.
- the rotor core 30 of the rotor 3 is cooled in particular by the guidance of the coolant through the rotor shaft 4 designed as a hollow shaft.
- the attachment elements 19, 19 ' are each attached to the rotor shaft 4 as separate components.
- the attachment elements 19, 19 ' are each formed integrally with the respective short-circuit ring 33, 33' of the electric machine 1.
- the coolant exits via the respective radial outlet openings 14, 14 'in the jacket of the rotor shaft 4 and is formed in the coolant collecting portion 24, here as a cavity formed by the respective shorting ring 33, 33' and the rotor core 30 is, collected and transported through bores 38 in the respective short-circuit ring 33, 33 'in the direction of the respective Statorstirnseite 25, 25', where the coolant can distribute freely over the entire winding heads 28 of the stator 2 and thus an improved heat dissipation at the winding lungsköpfen 28 on the respective stator front side 25, 25 'causes.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016208770.3A DE102016208770B4 (de) | 2016-05-20 | 2016-05-20 | Elektrische Maschine |
PCT/EP2017/058272 WO2017198389A1 (de) | 2016-05-20 | 2017-04-06 | Elektrische maschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3459157A1 true EP3459157A1 (de) | 2019-03-27 |
Family
ID=58489683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17715929.0A Withdrawn EP3459157A1 (de) | 2016-05-20 | 2017-04-06 | Elektrische maschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US11043866B2 (de) |
EP (1) | EP3459157A1 (de) |
CN (1) | CN109155549B (de) |
DE (1) | DE102016208770B4 (de) |
WO (1) | WO2017198389A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023031280A1 (de) * | 2021-09-06 | 2023-03-09 | Mahle International Gmbh | Elektromotor |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI626819B (zh) * | 2017-03-23 | 2018-06-11 | 建準電機工業股份有限公司 | 吊扇馬達 |
US11031834B2 (en) * | 2018-04-12 | 2021-06-08 | Ford Global Technologies, Llc | Electric machine rotor end plate with raised flow features |
DE102018220810A1 (de) | 2018-12-03 | 2020-06-04 | Audi Ag | Fluidgekühlter Rotor für eine elektrische Maschine |
DE102018132044A1 (de) | 2018-12-13 | 2020-06-18 | Schaeffler Technologies AG & Co. KG | Elektrische Maschine |
DE102019200098A1 (de) | 2019-01-07 | 2020-07-09 | Audi Ag | Fluidgekühlter Rotor für eine elektrische Maschine |
DE102019124209B4 (de) | 2019-09-10 | 2021-12-09 | Audi Ag | Kühlsystem für einen Elektromotor |
DE102021119990A1 (de) | 2021-08-02 | 2023-02-02 | Bayerische Motoren Werke Aktiengesellschaft | Kühlfluidleitvorrichtung für eine elektrische Maschine, elektrische Maschine sowie Verfahren zum Bereitstellen einer elektrischen Maschine |
DE102022111413A1 (de) | 2022-05-09 | 2023-11-09 | Bayerische Motoren Werke Aktiengesellschaft | Rotor für eine elektrische Traktionsmaschine eines Kraftfahrzeugs sowie elektrische Traktionsmaschine |
DE102022208566A1 (de) | 2022-08-18 | 2024-02-29 | Volkswagen Aktiengesellschaft | Rotor einer Asynchronmaschine |
EP4333267A1 (de) | 2022-08-29 | 2024-03-06 | Walter Henrich GmbH | Modulare rotorwelle mit integrierten kühlkanälen |
DE102022210829A1 (de) | 2022-10-13 | 2024-04-18 | Volkswagen Aktiengesellschaft | Elektrische Maschine und Rotor für eine elektrische Maschine |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US3629628A (en) * | 1970-07-06 | 1971-12-21 | Gen Motors Corp | Cooling arrangement for a squirrel cage rotor assembly |
EP0989658A1 (de) * | 1998-09-28 | 2000-03-29 | The Swatch Group Management Services AG | Flussigkeitsgekühlter elektrischen Asynchronmaschine |
DE19964061A1 (de) * | 1999-12-30 | 2001-07-05 | Bosch Gmbh Robert | Elektromotor, insbesondere für Handwerkzeugmaschinen |
US6727609B2 (en) * | 2001-08-08 | 2004-04-27 | Hamilton Sundstrand Corporation | Cooling of a rotor for a rotary electric machine |
JP3758583B2 (ja) * | 2002-02-06 | 2006-03-22 | 日産自動車株式会社 | 回転体の冷却構造 |
JP2005006429A (ja) | 2003-06-12 | 2005-01-06 | Toyota Motor Corp | 回転電機におけるロータ構造 |
DE102009029716A1 (de) * | 2008-06-18 | 2009-12-24 | Ixetic Bad Homburg Gmbh | Elektromotor |
DE112010004773T5 (de) | 2010-03-24 | 2012-10-18 | Aisin Aw Co. Ltd. | Rotor für eine drehende elektrische Maschine |
DE102012220239A1 (de) * | 2012-11-07 | 2014-05-08 | Continental Automotive Gmbh | Elektrische Maschine mit innerer Luftkühlung |
DE102013020331A1 (de) * | 2013-12-04 | 2014-07-31 | Daimler Ag | Elektrische Maschine, insbesondere Asynchronmaschine |
DE102013020324A1 (de) | 2013-12-04 | 2014-07-31 | Daimler Ag | Elektrische Maschine, insbesondere Asynchronmaschine |
DE102013020332A1 (de) | 2013-12-04 | 2014-07-31 | Daimler Ag | Elektrische Maschine, insbesondere Asynchronmaschine |
DE102014205884A1 (de) * | 2014-03-28 | 2015-10-01 | Siemens Aktiengesellschaft | Rotorvorrichtung für eine elektrische Maschine |
DE102014107845B4 (de) | 2014-06-04 | 2024-02-15 | Thyssenkrupp Presta Teccenter Ag | Ölverteilelement |
DE102014018223A1 (de) * | 2014-12-06 | 2015-06-25 | Daimler Ag | Elektrische Maschine, insbesondere Asynchronmaschine |
-
2016
- 2016-05-20 DE DE102016208770.3A patent/DE102016208770B4/de not_active Expired - Fee Related
-
2017
- 2017-04-06 US US16/301,518 patent/US11043866B2/en active Active
- 2017-04-06 CN CN201780031307.XA patent/CN109155549B/zh active Active
- 2017-04-06 EP EP17715929.0A patent/EP3459157A1/de not_active Withdrawn
- 2017-04-06 WO PCT/EP2017/058272 patent/WO2017198389A1/de unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023031280A1 (de) * | 2021-09-06 | 2023-03-09 | Mahle International Gmbh | Elektromotor |
Also Published As
Publication number | Publication date |
---|---|
US11043866B2 (en) | 2021-06-22 |
CN109155549A (zh) | 2019-01-04 |
DE102016208770B4 (de) | 2018-10-11 |
CN109155549B (zh) | 2020-06-16 |
US20190312475A1 (en) | 2019-10-10 |
WO2017198389A1 (de) | 2017-11-23 |
DE102016208770A1 (de) | 2017-11-23 |
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