WO2020094516A1 - Moteur électrique équipé d'un dispositif de refroidissement par fluide - Google Patents

Moteur électrique équipé d'un dispositif de refroidissement par fluide Download PDF

Info

Publication number
WO2020094516A1
WO2020094516A1 PCT/EP2019/079928 EP2019079928W WO2020094516A1 WO 2020094516 A1 WO2020094516 A1 WO 2020094516A1 EP 2019079928 W EP2019079928 W EP 2019079928W WO 2020094516 A1 WO2020094516 A1 WO 2020094516A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
rotor shaft
electrical machine
area
section
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.)
Ceased
Application number
PCT/EP2019/079928
Other languages
German (de)
English (en)
Inventor
Michael Hacklberger
Clemens Simon
Klaus Lang
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of WO2020094516A1 publication Critical patent/WO2020094516A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets

Definitions

  • the invention relates to an electrical machine with a fluid cooling device according to the preamble of claim 1, as already with the
  • WO 2016/050534 A1 has become known.
  • a lance-shaped cooling pipe is axially inserted into a section of a rotor shaft designed as a hollow shaft, through which a cooling fluid can flow into an annular space between the latter and the rotor shaft and absorb heat loss from the rotor .
  • the cooling tube is fixed axially on one side with a first section to a fixed support element and projects into the rotor shaft with a second, free section.
  • the coolant can flow in and out on the same end face of the electrical machine, as a result of which only a sealing element between the rotating rotor and the fixed elements of the machine is required.
  • an electrical machine with a fluid cooling device which comprises a stator and a rotor and the rotor is mounted rotatably about an axis relative to the stator by means of a rotor shaft.
  • the fluid cooling device has a cooling tube which is fixed by means of a first section to a support element fixed to the stator and which is connected to a fluid inlet.
  • the cooling tube extends with a second self-supporting section axially within a central recess of the rotor shaft and forms an annular space with the rotor shaft, so that the cooling tube r is in fluid connection with the annular space and with a fluid outlet.
  • a sealing area is provided with a sealing element, which at least substantially prevents fluid passage into a space area of the electrical machine outside the sealing area when a cooling fluid flows through from the fluid inlet to the fluid outlet.
  • the rotor shaft can be closed in a fluid-tight manner on the axial side facing away from the fluid inlet.
  • the fluid inlet and the fluid outlet can be formed jointly on one and the same end face of the electrical machine and, in a still further respect, in particular on a bearing plate functioning as a carrier element.
  • a fluid backflow channel which is in fluid communication with the fluid outlet is provided on the fastening region for the cooling tube which is formed on the carrier element.
  • the proposed design of a fluid return flow channel directly on the fastening area makes it possible to make the part of the fluid cooling device provided on this end area of the electrical machine more compact and to save installation space.
  • a construction space provided for a passage for cooling fluid flowing back between the fixed section of the sealing element and the fastening area can be saved as a result of the proposal or can be used in some other way.
  • the fluid return flow channel can be designed in a variety of ways, as will be explained below by way of example.
  • the sealing element can be designed in two parts and fixed to the fastening area with a first section and to the rotor shaft with a second section.
  • the fastening region can advantageously be designed as an axial extension projecting from a base body of the bearing plate.
  • the cooling tube can be fixed to the fastening area in a simple manner in a fluid-tight manner by an interference fit.
  • An axially particularly compact arrangement can be achieved by the fastening area being designed coaxially with the axis of rotation and at least partially protruding into the rotor shaft and thereby axially overlapping with it.
  • the sealing element can be fixed with the first section on a free end region of the axial extension and with the second section on a diameter step of the rotor shaft. The sealing element can thus be arranged entirely within the rotor shaft.
  • the space area lying outside the sealing area can comprise an annular gap which is formed between the sealing element and the rotor shaft and which is in fluid communication with a leakage space via a leakage channel.
  • a portion of cooling fluid passing through the sealing area of the sealing element can thus first be collected and collected within the rotor shaft.
  • the sealing surfaces interacting with one another can be designed with a comparatively small diameter, as a result of which the effectiveness of the sealing element can be improved and the proportion of leakage fluid passing through the sealing element can be reduced.
  • the fluid return flow channel can run between the cooling pipe and the fastening area, in particular an inner circumferential area of the fastening area, according to a preferred embodiment.
  • the fluid return flow channel can comprise at least one groove formed on the fastening region on an inner circumferential region, the open side of which is delimited radially on the inside by an outer circumferential surface of the cooling tube.
  • the fluid return flow channel can be formed completely or alternatively with its entire cross section in the material of the fastening area.
  • the fluid return flow channel can also run between the fastening area and the fixed first section of the sealing element or a further element, in particular a cover sleeve attached to the fastening area.
  • the fluid return flow channel can be on an external one Provided circumferential area of the fastening area and for this purpose in particular comprise a radially open groove, which is closed circumferentially by the first section of the sealing element or the cover sleeve.
  • the sealing element can be embodied in a particularly compact manner as an axial mechanical seal.
  • FIG. 1 shows an electrical machine designed as a vehicle axle drive with a fluid cooling device with a cooling tube in an axial sectional view according to a first exemplary embodiment
  • FIG. 2 shows an enlarged section of the fluid cooling device from FIG. 1 in the region of a bearing plate of the electrical machine
  • FIG. 3 shows a perspective illustration of the electrical machine in the region of the end shield from FIG. 3;
  • FIG. 4 is a perspective view of a coolant flange formed on a housing of the electrical machine
  • FIGS. 1, 2 shows an electrical machine modified with respect to FIGS. 1, 2 with a fluid cooling device with a cooling tube in a partial axial sectional view in the area of a bearing plate according to a second exemplary embodiment
  • FIG. 6a shows an interior of the fluid cooling device from FIG. 5 with a fastening area for a cooling pipe provided on a bearing plate;
  • Fig. 6b is a partial front view of the end shield of Fig. 6a with the mounting area.
  • the figures show an electrical machine 1, which is provided and designed in particular for driving an electric or hybrid vehicle.
  • the electrical machine 1 is provided for installation in or on a vehicle axle. hen and thus represents an electric axle drive 2 in connection with other components.
  • the electric machine 1 thus delivers its power to vehicle wheels for moving the vehicle.
  • an electric vehicle drive and a vehicle with such an electric machine 1 are also described in addition to the electric machine 1 explained in detail below.
  • the electrical machine 1 comprises a stator 4 fixed in a housing 3 with a stator lamination stack 5 and with a stator winding 6 and a rotor 7 with a rotor lamination stack 8 and with a short-circuit cage 9.
  • the electrical machine 1 is thus designed as an asynchronous machine.
  • the rotor 7 is rotatably mounted about an axis A to the stator 4 by means of a rotor shaft 10, a first bearing 13 arranged on a first bearing plate 11 and a second bearing 14 arranged on a second bearing plate 12.
  • the rotor shaft 10 is operatively connected to a gear 36 shown on the left in FIG. 1, which can transmit the engine torque to vehicle wheels via further transmission elements, not shown here in the drawing.
  • the electrical machine 1 has a fluid cooling device 15 through which a cooling fluid can flow and which can emit a lost heat to a heat exchanger located outside the electrical machine 1.
  • the fluid cooling device 15 comprises a metallic cooling tube 16 which is fixed to a support element 17 which is fixed to the stator 4, in particular to the first bearing plate 11 and which is connected via an axial fluid inlet opening 16f to a fluid inlet 18 provided on the bearing plate 11 .
  • the cooling tube r has a lance-shaped shape, the axial extension L being many times larger than its diameter D. In the exemplary embodiment, this ratio is L / D> 10, in particular L / D> 15 and in concrete terms is approximately 17.
  • the cooling tube 16 is axially supported on one side only by means of a first section 16a through the bearing plate 11 and extends with its larger second free-standing one Section 16b in the axial direction within a central recess tion 10a of the rotor shaft 10 and forms an annular space 10b to the rotor shaft 10.
  • a length ratio of a length of the first section 16a to a length of the second section 16b, that is to say the ratio of the length of the fastened section 16a to the length of the unsecured, free section 16b is greater than 10 and is specifically approximately 14.
  • the cooling tube 16 is open axially on both sides and is thus in the installed state shown in FIG. 1 via an axial fluid outlet opening 16e simultaneously with the annular space 10b and with a fluid outlet 19 likewise provided on the first end plate 11.
  • the first end shield 11 has a central first through opening 11a for forming the fluid inlet 18 and a second through opening 11b arranged radially to the first through opening for forming the fluid outlet 19. Both through openings 11a, b thus emerge from the end shield 11 at an end mounting surface 11c facing away from the rotor 7.
  • a sealing area 20 with a sealing element 21 is provided between the rotor shaft 10 and the bearing plate 11 functioning as a carrier element 17.
  • the sealing element 21 has the task, when flowing through the cooling fluid from the fluid inlet 18 to the fluid outlet 19, to at least substantially prevent a fluid transfer into a spatial region 22 of the electrical machine 1 lying outside the sealing region 20.
  • the sealing element 21 is designed as an axial mechanical seal 23.
  • the mechanical seal 23 comprises a first section 23a which is fixed on the carrier element 17 and further comprises a second section 23b which is fixed on the rotor shaft 10 and which is in sealing connection with the first section 23a.
  • the second section 23b of the mechanical seal 23 is at least partially axially overlapping to the first bearing 13.
  • the cooling fluid flowing in the annular space 10b in the axial direction to the fluid outlet 19 passes through the sealing area 20 and is then passed through a radial area between a fastening area 11f of the bearing plate 11 or generally of the carrier element 17 and the second portion 23b formed fluid passage 42 to finally go through the passage opening 11b to the fluid outlet 19.
  • the cooling fluid can flow radially outside of the attachment area 11f.
  • the first bearing 13 has both on the axial side facing the mechanical seal 23 and on the axial side facing the rotor laminated core 8 a sealing arrangement 13c acting between a radially inner bearing ring 13a and a radially outer bearing ring 13b with two sealing disks 13d, e .
  • the bearing interior 13f is further sealed against the ingress of cooling fluid by means of a high-speed grease. On the one hand, this lubricates the bearing 13 and, on the other hand, the penetration of fluid into the inner space 22 of the electrical machine 1 is prevented by the created grease barrier.
  • an inner diameter 10c of the rotor shaft 10 or the central recess 10a present there can be made larger in the area of an axial extension of the rotor laminated core 8 than in Area of the first bearing 13.
  • the rotor shaft 10 is designed as a hollow shaft and is closed in a fluid-tight manner by a closure 24 on the axial side facing away from the fluid inlet 18. Due to the coaxial arrangement of rotor shaft 10 and cooling tube 16, the fluid flow undergoes a reversal of direction opposite to the inflow direction and can flow out again on the axial side of fluid inlet 18, for which purpose a sealing arrangement in the form of sealing element 21 is only required on this side.
  • the cooling tube 16, the first bearing 13 and the stator-fixed section 23a of the sealing element 23 are thus received by the first bearing plate 11.
  • the first bearing plate 11 also receives an electrical potential equalization element 25 which interacts with the rotor shaft 10.
  • a slip ring arrangement 26 is provided as the potential equalization element 25, which potential differences between the stator 4 and the rotor 7 that occur as shaft voltages are caused by electrical see short circuit breaks down.
  • the potential equalization element 25 is arranged axially adjacent to the first bearing 13, in particular axially between the bearing 13 and the rotor laminated core 8.
  • the cooling tube 16 is fixed in a fluid-tight manner on the fastening region 11f provided on the end shield 11 or generally on the carrier element 17.
  • the cooling tube 16 is arranged by means of an interference fit in a tubular axial extension 1 1 e projecting from a base body 1 1 d of the bearing plate 11, which axial extension forms the fastening region 1 1f.
  • the fastening area 11f and the rotor shaft 10 are designed coaxially with one another about the axis A. It can be seen in the figures that the fastening area 11f partially overlaps axially with the stator-fixed section 23a of the sealing element 21 or the mechanical seal 23.
  • a cover element 27 made of a plastic with a web arrangement 27a arranged in a fluid-tight manner.
  • a fluid inlet channel 28 and a fluid outlet channel 29 are formed by the web arrangement 27a between the bearing plate 11 and the cover element 27.
  • the above-mentioned channels 28, 29 can be bordered at least in sections by the cover element 27 alone. If such a cover element 27 is dispensed with, the fluid inlet channel 28 and the fluid outlet channel 29 can likewise be formed in the first bearing plate 11.
  • the housing 3 of the electrical machine 1 is formed as a casting from a light metal material, in the present case from an aluminum material.
  • the housing 3 simultaneously forms a fluid cooling jacket 30 surrounding the stator 4 with a fluid channel arrangement 31.
  • the housing 3 On the side facing the first bearing plate 11, the housing 3 has a coolant flange 32 integrally formed therewith with two fluid channel sections 32a, b, which here are in fluid communication with the fluid inlet channel 28 and the fluid outlet channel 29 of the cover element 27.
  • the fluid channel section 32a forms an external coolant connection 40.
  • a further external coolant connection can be arranged, for example, at a different position of the stator cooling jacket or at a power electronics for controlling the electrical machine 1, which with its housing and with its cooling circuit is connected to the electrical machine 1 and to the fluid cooling device 15 formed there.
  • the further fluid channel section 32b forms a connecting channel to the fluid cooling jacket 30 of the stator 4.
  • the fluid cooling device 15 can thus have a cooling section 15a for cooling the rotor 7 and a cooling section 15b for cooling the stator 4, through which the cooling fluid flows in succession, and a fluid connection provided between them is designed as a fixed, tubeless connection channel 32b is.
  • a leakage space 33 is provided with a fluid collecting area 34, into which a portion of the cooling fluid passing through the sealing area 20 can enter and be collected.
  • the leakage space 33 also has a gas collecting area 35, which is arranged geodetically higher than the fluid collecting area 34 in an operating position of the electrical machine 1. When using a cooling fluid with materially at least one volatile component, this can escape via the mechanical seal 23 and collect in the gas collection area 35.
  • a closable engagement opening 34a with a removable closure cover 34b is provided on the fluid collecting area 34 in order to remove the solid-shaped component.
  • a closable fluid drain opening 34c is provided there with a drain element 34d, in particular a drain screw or a drain plug.
  • the fluid drain opening 34c is oriented essentially geodetically downward and is arranged geodetically lower in relation to a gas drain opening 35a of the gas collecting area 35.
  • the access opening of the end cover 34b with a larger cross section than the fluid discharge opening 35a.
  • the fluid drain opening 34c is provided at least approximately at a 6 o'clock position, that is to say between a 5 o'clock and a 7 o'clock position.
  • the gas discharge opening 35a is at least approximately provided at a 12 o'clock position, that is to say between an 11 o'clock and a 01 o'clock position.
  • the fluid collecting area 34 and the gas collecting area 35 are provided at least approximately in the same axial position.
  • the mechanical seal 23 can also be located at this axial position or at least axially overlap with the fluid collection area 34 and / or the gas collection area 35.
  • the gas discharge opening 35a of the gas collecting area 35 furthermore has a pressure compensation element 41, as a result of which gases can escape from the gas collecting area 35.
  • the pressure compensation element 41 comprises a semipermeable membrane, which is permeable to air to enable pressure compensation, but is not permeable to fluid.
  • the second bearing 14 is provided axially spaced apart from the first bearing 13 for mounting the rotor 7, and if necessary it can also be designed axially on one or both sides with sealing rings and with a lubricant filling.
  • the bearing 14 is provided radially between the rotor shaft 10 and the second bearing plate 12, the rotor laminated core 8 extending in an axial space between the first and the second bearings 11, 12.
  • the central recess 10a extends axially through the second bearing 14 within the rotor shaft 10.
  • the cooling tube 16 also extends axially beyond the second bearing 12 within the rotor shaft 10.
  • the inside diameter of the rotor shaft 10 is larger in the area of the axial extension of the rotor laminated core 8 and in the area of the second bearing 12 than in the area of the first bearing 11.
  • the rotor shaft 10 has a shaft section which projects axially beyond the second bearing 12 and leads into the gear 36 with an output element 38 designed as a gearwheel 37.
  • the central recess 10a of the rotor shaft 10 extends axially into the area of the output element 38 and can therefore also be flowed through by the cooling fluid.
  • the cooling tube 16 can also extend axially into the area mentioned.
  • the output element 38 and thus further elements in heat exchange and / or a lubricant or coolant located outside of the rotor shaft 10 can thus also reach the area of action of the fluid cooling device 15 and be cooled.
  • the output element 38 is arranged on the rotor shaft 10 axially between the second bearing 14 and a third bearing 39.
  • the central recess 10a of the rotor shaft 10 extends axially into the region of the third bearing 39 and is therefore flowed through by the cooling fluid up to this position.
  • the third bearing 39 is therefore also in the range of action of the fluid cooling device 15 described above.
  • FIGS. 5, 6a and 6b show a detail of a fluid cooling device 15 which has been modified in comparison with the arrangement of FIG. 1 in the area of the first bearing plate 11, the fluid outlet 19 and the mechanical seal 23, which is described in detail below.
  • This exemplary embodiment is based on the same basic structure explained above with reference to FIGS. 1-4. The features and design variants described for this purpose should also apply or be present except for the differences described below.
  • the cooling tube 16 is in turn fixed to the fastening region 11f with the first section 16a and extends axially within the central recess 10a of the rotor shaft 10 with the second self-supporting section 16b.
  • the cooling tube 16 forms the annular space 10b with the rotor shaft 10, so that the cooling tube 16 is in fluid communication with the annular space 10b and with the fluid outlet 19.
  • the rotor shaft 10 is also, as previously explained, on the axial side facing away from the fluid inlet 18. The side is closed in a fluid-tight manner, for which purpose the recess 10a is only axially open.
  • the fluid inlet 18 and the fluid outlet 19 are in this case jointly formed on one and the same end face of the electrical machine 1 and in particular on the bearing plate 11 functioning as a carrier element 17. Also provided between the rotor shaft 10 and the carrier element 17 is the sealing region 20 with the sealing element 21, which, when a cooling fluid flows through from the fluid inlet 18 to the fluid outlet 19, causes fluid to pass into the space region 22 of the electrical machine 1 outside the sealing region 20, at least in the Essentially prevented.
  • a fluid return flow channel 11g which is in fluid communication with the fluid outlet 19, is formed on the fastening area 11f.
  • the axial mechanical seal 23 with the first section 23a is fixed directly to the fastening region 11f and with the second section 23b to the rotor shaft 10.
  • the fastening area 11f is again designed as an axial extension 11e protruding from a base body 11d of the bearing plate 11, on which the cooling tube 16 is fixed in a fluid-tight manner by an interference fit.
  • the fastening area 11f is formed coaxially to the axis A, at least partially protrudes into the rotor shaft 10 and overlaps it axially.
  • the sealing element 21 is fixed with the first section 23a to a free end area 11h of the axial extension 11e and with the second section 23b to a diameter step 10d of the rotor shaft 10.
  • the space area 22 lying outside the sealing area 20 comprises an annular gap 22a formed between the sealing element 21 and the rotor shaft 10, which is in fluid communication with the leakage space 33 via a leakage channel 33a.
  • a portion of cooling fluid that passes through the sealing area 20 of the sealing element 21 can thus initially be within the rotor shaft. le 10 are collected and collected.
  • the sealing element 21 is thus arranged entirely within the rotor shaft 10.
  • the fluid return flow channel 11g and the leakage channel 33a are fluidically separate.
  • the fluid backflow channel 11g in the present case comprises four axially extending grooves 111g, 112g, 113g, 114g formed on the inner circumference of the fastening region 11f, which are closed on the now open inner circumferential surface 11j by an outer circumferential surface 16c of the cooling tube 16.
  • obliquely running channel sections 11k and 111k, 112k, 113k, 114k are provided, which together on the mounting surface 11c into an arcuate recess 111 in the fluid outlet 19 flow out.
  • the grooves 111 g-114g are axially continuous for manufacturing reasons and open in the fluid inlet 18.
  • the fluid circuit is fluidically closed, creating a dead fluid area that is negligible from a functional point of view.
  • the otherwise fluid-tight connection of the cooling tube 16 to the fastening area 11f is thus eliminated in the area of the grooves 111g, 112g, 113g, 114g.
  • the grooves 111g, 112g, 113g, 114g on the end plate 11 can also be closed on the end face in order to thereby separate the fluid inlet 18 from the fluid outlet 19 in terms of flow.
  • an annular collar can be provided at the axial end of the cooling tube 16 located there, which radially covers the grooves 111g, 112g, 113g, 114g and thus closes axially at this position.
  • Fluid channel assembly 39 bearings
  • Coolant flange 40 external coolant connection a, b fluid channel section 41 pressure compensation element leakage space 42 fluid passage

Landscapes

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

Abstract

L'invention concerne un moteur électrique (1) comprenant un stator (4), un rotor (7) et un dispositif de refroidissement par fluide (15), le rotor (7) étant monté rotatif autour d'un axe (A) par rapport au stator (4) au moyen d'un arbre de rotor (10). Le dispositif de refroidissement par fluide (15) comprend un tuyau de refroidissement (16) qui est fixé, au moyen d'une première partie (16a), à une zone de fixation (11f) d'un élément de support (17) fixé au stator (4), et qui est relié à une admission de fluide (18). Le tuyau de refroidissement (16) s'étend avec une deuxième partie (16b) en porte-à-faux axialement dans un évidement (10a) central de l'arbre de rotor (10) et forme avec cet arbre de rotor (10) un espace annulaire (10b), de sorte que ledit tuyau de refroidissement (16) soit en liaison fluidique avec cet espace annulaire (10b) et avec une sortie de fluide (19). Une zone d'étanchéité (20) comportant un élément d'étanchéité (21) prévue entre l'arbre de rotor (10) et l'élément de support (17) empêche, au moins en grande partie, le débordement du fluide dans une zone spatiale (22) du moteur électrique (1) se situant en dehors de la zone d'étanchéité (20), lors de l'écoulement d'un fluide de refroidissement de l'admission de fluide (18) à la sortie de fluide (19). À cet effet, un canal d'écoulement retour (11g) en liaison fluidique avec la sortie de fluide (19) est prévu au niveau de la zone de fixation (11f).
PCT/EP2019/079928 2018-11-05 2019-10-31 Moteur électrique équipé d'un dispositif de refroidissement par fluide Ceased WO2020094516A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018218811.4 2018-11-05
DE102018218811.4A DE102018218811A1 (de) 2018-11-05 2018-11-05 Elektrische Maschine mit einer Fluid-Kühleinrichtung

Publications (1)

Publication Number Publication Date
WO2020094516A1 true WO2020094516A1 (fr) 2020-05-14

Family

ID=68461787

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/079928 Ceased WO2020094516A1 (fr) 2018-11-05 2019-10-31 Moteur électrique équipé d'un dispositif de refroidissement par fluide

Country Status (2)

Country Link
DE (1) DE102018218811A1 (fr)
WO (1) WO2020094516A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60128464U (ja) * 1984-01-31 1985-08-29 株式会社安川電機 回転電機の冷却装置
US20130234543A1 (en) * 2012-03-08 2013-09-12 Siemens Aktiengesellschaft Electrical machine having dual-circuit cooling
WO2016050534A1 (fr) 2014-09-30 2016-04-07 Siemens Aktiengesellschaft Machine electrique à refroidissement par liquide
WO2018124252A1 (fr) * 2016-12-29 2018-07-05 イーグル工業株式会社 Joint mécanique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60128464U (ja) * 1984-01-31 1985-08-29 株式会社安川電機 回転電機の冷却装置
US20130234543A1 (en) * 2012-03-08 2013-09-12 Siemens Aktiengesellschaft Electrical machine having dual-circuit cooling
WO2016050534A1 (fr) 2014-09-30 2016-04-07 Siemens Aktiengesellschaft Machine electrique à refroidissement par liquide
WO2018124252A1 (fr) * 2016-12-29 2018-07-05 イーグル工業株式会社 Joint mécanique

Also Published As

Publication number Publication date
DE102018218811A1 (de) 2020-05-07

Similar Documents

Publication Publication Date Title
EP3878080B1 (fr) Machine électrique munie d'un dispositif de refroidissement par fluide
DE112011101542B4 (de) Fahrzeugantriebsvorrichtung
DE102012202460A1 (de) Elektromotorische Getriebevorrichtung mit einstückigem Gehäuse
DE102012203697A1 (de) Elektrische Maschine mit einem Rotor zur Kühlung der elektrischen Maschine
EP0688090B1 (fr) Système de refroidissement pour un moteur
DE102019215402A1 (de) Elektrische Maschine mit integriertem Kühlsystem
WO2015018575A1 (fr) Refroidissement d'un système hybride de propulsion
DE102013018720A1 (de) Kurbelwellen-Startergenerator und Gehäuse für einen Kurbelwellen-Startergenerator
DE102016218819A1 (de) Kühlsystem
DE102018111418A1 (de) Antriebsmodul für ein Fahrzeug
EP3611828A1 (fr) Machine tournante dynamoélectrique doté d'un blindage de fente d'aération
EP3584910B1 (fr) Machine électrique à dissipation de la chaleur perdue améliorée
WO2015055295A2 (fr) Dispositif d'entraînement
WO2006106086A1 (fr) Machine electrique a enveloppe de refroidissement par liquide
DE102021117520A1 (de) Kühlmittelversorgungssystem für eine Elektromaschine
WO2020216506A1 (fr) Machine électrique dotée d'un corps en matière plastique
DE102016216083A1 (de) Fluidgekühlte elektrische Maschine
WO2020094510A1 (fr) Machine électrique comprenant un dispositif de refroidissement à fluide
WO2020094512A1 (fr) Moteur électrique équipé d'un dispositif de refroidissement par fluide
DE102014224368A1 (de) Reibelementträger für eine Kupplung
DE29808627U1 (de) Bogenzahnkupplung
WO2020094515A1 (fr) Machine électrique munie d'un dispositif de refroidissement par fluide
WO2020094514A1 (fr) Moteur électrique équipé d'un dispositif de refroidissement par fluide
DE102012204774A1 (de) Anordnung einer elektrischen Maschine
DE102016217107A1 (de) Stator einer elektrischen Maschine mit einem Kühlmantel

Legal Events

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

Ref document number: 19798053

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19798053

Country of ref document: EP

Kind code of ref document: A1