EP3850732A1 - Elektrische maschine, insbesondere für ein fahrzeug - Google Patents
Elektrische maschine, insbesondere für ein fahrzeugInfo
- Publication number
- EP3850732A1 EP3850732A1 EP19744689.1A EP19744689A EP3850732A1 EP 3850732 A1 EP3850732 A1 EP 3850732A1 EP 19744689 A EP19744689 A EP 19744689A EP 3850732 A1 EP3850732 A1 EP 3850732A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat transfer
- transfer body
- rotor
- machine according
- housing part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012546 transfer Methods 0.000 claims abstract description 156
- 239000002826 coolant Substances 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 33
- 230000000295 complement effect Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000007765 extrusion coating Methods 0.000 claims 1
- 230000006378 damage Effects 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000013021 overheating Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the invention relates to an electrical machine, in particular for a vehicle, and a vehicle with such a machine.
- Such an electrical machine can generally be an electric motor or a generator.
- the electrical machine can be designed as an external rotor or as an internal rotor.
- a generic machine for example from US 5,214,325. It comprises a housing which surrounds a housing interior and which has a circumferential circumferential shell of the housing which radially delimits the housing interior, axially on the one hand a rear wall axially delimiting the housing interior and axially on the other hand a front wall axially delimiting the housing interior.
- a stator of the machine is firmly connected to the jacket.
- a rotor of the machine is arranged in the stator, a rotor shaft of the rotor being rotatably mounted on the front side wall via a front shaft bearing.
- the stator of a conventional electrical machine comprises stator windings which are supplied with electrical current during operation of the machine. This also generates heat in the rotor, which must be dissipated to avoid overheating and the associated damage or even destruction of the rotor. Removal of the heat is also necessary in order not to demagnetize the windings or permanent magnets of the rotor due to the temperature being too high.
- this structure must be designed to be massive in order to be able to absorb the forces generated by the rotor during the rotary movement.
- a large wall thickness of the structure is therefore required for said structure.
- this complicates the cooling of the rotor.
- materials with high thermal conductivity are used. This, however, is associated with considerable costs.
- an object of the present invention to provide an improved embodiment for an electrical machine in which the above-mentioned disadvantages are largely or even completely eliminated.
- an improved embodiment for an electrical machine is to be created, which is characterized by improved cooling of the rotor with low manufacturing costs.
- the basic idea of the invention is accordingly that the rotor of the electrical machine is mounted directly on the two end shields of the housing, that is, on the two to store the interior of the machine axially limiting housing parts.
- the rotor in the machine according to the invention presented here is connected directly to the two end shields via a bearing device and is mounted on these. This ensures that forces generated by the rotor are introduced directly into the two end shields via the bearing device.
- a heat transfer body which is arranged to receive waste heat from the stator, between a coolant space provided in the housing - this can be designed as a cooling channel, coolant collector or coolant collector - and the rotor in the interior of the housing to be particularly thin-walled. This causes a high
- Heat transfer rate through the heat transfer body and thus a particularly high cooling capacity, which can be provided with the help of the heat transfer body for the rotor cooling.
- material savings achieved with thin-walled heat transfer bodies are accompanied by considerable cost advantages, since materials with a very high thermal conductivity are generally very expensive to procure.
- An electrical machine in particular for a vehicle, comprises a stator and a rotor which can be rotated about an axis of rotation relative to the stator.
- An axial direction of the machine is defined by the axis of rotation.
- the machine comprises a housing which surrounds an interior of the housing.
- the housing comprises a first and a second housing part, which delimit the housing interior, preferably along the axial direction, and on which the rotor is rotatably mounted by means of a bearing device.
- the two housing parts can in particular be the axial “end shields” mentioned at the beginning.
- the bearing device can have two bearing elements, in particular in the form of shaft bearings, a first shaft bearing on the first housing part and a second bearing element on the second housing part, that is to say preferably on a nem second bearing plate, which is axially opposite the first bearing plate, is arranged.
- a heat transfer body is arranged axially between at least one housing part - ie the first or second housing part - and the rotor. This heat transfer body, together with said housing part, delimits a coolant space, which is preferably designed as a cooling channel, coolant collector space and / or coolant distribution space for a coolant to flow through.
- a heat transfer structure for transferring waste heat from the rotor to the heat transfer body is present on the heat transfer body in question and on the rotor.
- the rotor can expediently be mounted directly on the housing parts. This allows the heat transfer structure to be made thin-walled, since no bearing forces are introduced from the rotor into the heat transfer structure.
- the rotor is particularly preferably not mounted on the housing parts via the heat transfer structure and preferably also not via the heat transfer body (s).
- This variant also makes it possible to make the heat transfer structure particularly thin-walled, since no bearing forces from the rotor have to be absorbed by the heat transfer structure.
- a wall thickness of the first or / and second housing part measured in the axial direction is expediently at least twice, preferably at least five times, a wall thickness of the heat transfer body.
- at least two heat transfer bodies are provided to delimit the coolant space, both of which are formed separately from the two housing parts.
- a first heat transfer body is arranged axially between the first housing part and the rotor and a second heat transfer body is arranged axially between the rotor and the second housing part.
- the bearing device comprises a first bearing element and a second bearing element, which are arranged axially at a distance from one another, so that the rotor is arranged axially between the two bearing elements.
- the axial position of the bearing elements is determined such that less than 35%, preferably less than 10%, of the radial forces absorbed by the bearing elements are passed on to the respective heat transfer body. In this way, overloading of the heat transfer body is avoided.
- the bearing device comprises a first bearing element, by means of which the rotor is mounted on the first housing part, and a second bearing element, by means of which the rotor is mounted on the second housing part.
- a distance measured along the axial direction between the first heat transfer body and the first housing part is larger - and is preferably at least twice - as a distance between the first bearing element and the first housing part.
- a distance measured along the axial direction between the second heat transfer body and the second housing part is larger - and is preferably at least twice - as a distance between the second bearing element and the second housing part.
- the stator is attached to at least one of the two housing parts.
- the stator is arranged at a distance from the heat transfer body or only lies loosely on it. In this way it can be avoided that excessive forces are introduced into the heat transfer body, which could lead to damage to the heat transfer body, in particular if the latter is made thin-walled, as proposed here.
- the heat transfer body is clamped between the stator and the housing part with a pretensioning force which is sufficient to ensure a fluid-tight surface pressure for intermediate sealing elements, in particular in the form of elastomer seals.
- the heat transfer body and the at least one housing part are preferably formed in two parts. This makes it easier to choose a different material for the housing part, in particular with low thermal conductivity, than for the heat transfer body. This measure also has considerable cost advantages in the manufacture of the electrical machine.
- the heat transfer body is attached to the at least one housing part.
- a detachable or non-detachable fastening is conceivable. The latter can in particular be a cohesive connection.
- the heat transfer structure comprises a plurality of projections which project axially from the rotor to the heat transfer body and which engage in complementary recesses provided on the heat transfer body.
- the heat transfer structure comprises a plurality of projections projecting axially from the heat transfer body toward the rotor, which engage in recesses provided on the rotor that are complementary thereto. In both alternatives, a large interaction area for the heat transfer from the rotor to the heat transfer body is ensured.
- the projections can particularly preferably be designed like a comb. Since the complementary recesses in this variant also have a comb-like geometry, a particularly large interaction surface for heat transfer from the rotor to the heat transfer body is achieved in this way.
- the heat transfer body and the rotor for realizing the heat transfer structure are particularly preferably arranged relative to one another in such a way that in the area of the heat transfer structure there is an axial distance between the heat transfer body and the rotor - this is measured along the axial direction - at most 1 mm, preferably at most 0, Is 5 mm.
- the air gap formed between the heat transfer body and the rotor has a small gap width, so that effective heat transfer from the rotor to the heat transfer body is ensured.
- the heat transfer body can be designed as a cooling plate which extends at least in sections transversely to the axial direction, the cooling plate of which extends along the axial direction measured wall thickness is at most 3 mm, preferably at most 1 mm.
- the projections or recesses resulting in the heat transfer structure are formed or formed on or in this cooling plate along the axial direction.
- a recess depth or projection height of the recesses or projections forming the heat transfer structure on the heat transfer body is particularly preferably at least three times, preferably at least five times, the wall thickness of the cooling plate.
- the heat transfer structure has a large interaction area, so that a particularly large amount of heat can be transferred from the rotor to the heat transfer body per unit of time.
- the cooling plate remains particularly thin-walled.
- the heat transfer body with the heat transfer structure can be a deep-drawn sheet metal part with a rib structure, the rib structure being produced by a deep-drawing or forming process.
- At least one housing part has a fastening section to which the heat transfer body is fastened, the bearing device for the rotatable mounting of the rotor also being attached to the fastening section.
- both housing parts that is to say both the first and the second housing part, have a fastening section designed in this way.
- the bearing device is not attached to the housing via the heat transfer body, as in conventional electrical machines.
- the heat transfer body can therefore be made particularly thin-walled.
- the fastening section can particularly preferably be configured as axially from the housing. seteil be formed inwardly projecting into the housing interior, on the inside of which a bearing element of the bearing device is arranged. Such a sleeve-like design ensures a particularly stable attachment of the bearing device to the housing part.
- the heat transfer body is made of a different material than at least one of the two housing parts.
- both housing parts are made of a different material than the heat transfer body. This variant allows a relatively expensive material with high thermal conductivity to be used only for the heat transfer body - as part of the heat transfer structure, whereas a cheaper material with lower thermal conductivity can be used for the housing part (s).
- the material of at least one housing part has a thermal conductivity that is less than the thermal conductivity of the heat transfer body.
- a relatively inexpensive material with low thermal conductivity can be used in the housing parts that do not have to transfer heat from the rotor to the coolant chamber.
- the heat transfer body and the two housing parts are made of non-uniform materials. This makes it possible to use a material with a lower thermal conductivity for the housing parts than for the heat transfer structure. This leads to cost advantages in the manufacture of the machine.
- the material of the first and / or second housing part can have a higher upper yield strength and / or yield strength than the material of the heat transfer body.
- the material of the heat transfer body particularly preferably has a thermal conductivity of at least 100 W / (m * k), particularly preferably at least 150 W / (m * k). In this way, an effective heat transfer from the rotor via the cooling channel to the coolant present in the coolant chamber is ensured.
- the invention further relates to a vehicle, in particular a motor vehicle, with an electrical machine presented above.
- a vehicle in particular a motor vehicle
- an electrical machine presented above. The advantages of the electrical machine explained above are therefore also transferred to the vehicle according to the invention.
- FIG. 1 shows an example of an electrical machine according to the invention in a longitudinal section along the axis of rotation of the rotor
- 2 shows a detailed view of FIG. 1 in the area of the heat transfer body.
- FIG. 1 illustrates an example of an electrical machine 1 according to the invention.
- the machine 1 comprises a housing 2 which surrounds a housing interior 3.
- a stator 4 and a rotor 5 are arranged in the housing interior 3.
- the stator 4 can have a stator body 12 and a plurality of stator coils 13, not shown in FIG. 1, which are embedded in the stator body 12 and can be energized electrically for driving the rotor 5.
- the stator 4 is fixedly attached to a peripheral wall 14 of the housing 2.
- the rotor 5 comprises a rotor shaft 6 and a plurality of permanent magnets 7, not shown in FIG. 1, which are arranged on the rotor shaft 6 in a rotationally fixed manner.
- the rotor 5 can be rotated relative to the stator 3 about an axis of rotation D, which is defined by the central longitudinal axis M of the rotor shaft 6.
- An axial direction A of the electrical machine 1 is defined by the axis of rotation D.
- a radial direction R extends perpendicularly from the axis of rotation D.
- a circumferential direction U runs around the axis of rotation D.
- the permanent magnets 7 of the rotor 5 can be arranged along the circumferential direction U of the rotor shaft 6 with alternating magnetic polarization. In other words, magnetic north poles N and magnetic south poles S alternate along the circumferential direction U.
- the housing 2 comprises a first and a second housing part 8a, 8b.
- These two housing parts 8a, 8b are also known to the person skilled in the art as so-called “end shields” and delimit the housing interior 3 along the axial direction A.
- Another, third housing part 8c, which delimits the machine radially, is defined by a turn - Injection of the stator 4 made of plastic.
- the first and the second housing part 8a, 8b can be formed separately from the third housing part 8c.
- the rotor 5 with the rotor shaft 6 is rotatably mounted on the housing 2 via a bearing device 9.
- the bearing device 9 comprises a first bearing element 10a, via which the rotor shaft 6 is rotatably mounted on the first housing part 8a.
- the bearing device 9 comprises a second bearing element 10b, which is arranged axially at a distance from the first bearing element 10a and via which the rotor shaft 6 is rotatably mounted on the second housing part 8b.
- the two bearing elements 10a, 10b - also known to the person skilled in the art under the name “shaft bearing” - are firmly connected to the first and second housing parts 8a, 8b.
- the stator 4 with the stator body 12 and the stator coils 13 is also fastened to the two housing parts 8a, 8b, 8c.
- first and second heat transfer bodies 11a, 11b for removing waste heat generated by the rotor 5 including its permanent magnets 7 during operation.
- the first and the second heat transfer bodies 11 a, 11 b and the housing parts 8a, 8b respectively assigned to the heat transfer bodies 11 a, 11 b are each formed in two parts.
- the first heat transfer body 11 a can be fastened to the first housing part 8 a, for example by means of a material connection.
- the second heat transfer body 11b can be fastened to the second housing part 8b, preferably also by means of a material connection.
- a suitable detachable connection is also possible.
- the two heat transfer bodies 11 a, 11 b of the heat transfer structure 18 are preferably locked exclusively by axial pressure.
- the rotor 5 is expediently mounted directly on the housing parts 8a, 8b, in particular the rotor 5, as can be seen in FIG. 1, is not on the housing parts 8a via the heat transfer structure 18 and also not via the heat transfer bodies 11a, 11b , 8b stored.
- the first heat transfer body 11 a is arranged along the axial direction A between the first housing part 8 a and the rotor 5.
- the second heat transfer body 11b is arranged along the axial direction A between the rotor 5 and the second housing part 8b.
- the coolant K can absorb heat generated by the rotor 5 during operation of the machine 1 via the two heat transfer bodies 11 a, 11 b, so that overheating and — associated with this — damage or even destruction of the machine 1 can be avoided.
- a coolant inlet 16 for introducing the coolant K into the coolant chamber 15 and in the second housing part 8b are in the first housing part 8a
- Coolant outlet 17 is provided for leading the coolant K out of the coolant chamber 15. Heat is passed on to the coolant K flowing through the coolant chamber 15 via the two heat transfer bodies 11 a, 11 b, which in each case partially delimit the coolant chamber 15, and is removed therefrom from the machine 1.
- the two heat transfer bodies 11a, 11b can both be designed as cooling plates 22a, 22b which extend at least in sections transversely to the axial direction A, that is to say along the radial direction R, and whose wall thickness W measured along the axial direction A in the region of the heat transfer structure 18 is at most 3 mm, preferably at most 1 mm.
- the cooling plates 22a, 22b can be realized by deep-drawn sheet metal parts. As can be seen in FIG. 1, the two heat transfer bodies 11 a and 11 b are arranged at a distance from the stator 4 with the stator body 12 and only lie loosely on the latter with contact sections 19.
- a wall thickness of the first and second housing parts 8a, 8b measured in the axial direction A is at least twice, preferably at least five times, a wall thickness of the first and second heat transfer bodies 11a, 11b.
- the two heat transfer bodies 11a, 11b are made of a different material than the two housing parts 8a, 8b.
- the material of the two housing parts 8a, 8b has a thermal conductivity that is less than the thermal conductivity of the heat transfer body 8a, 8b. In this way, costs can be saved in the manufacture of machine 1, since suitable materials with high thermal conductivity are usually more expensive than materials with low thermal conductivity.
- the material of the heat transfer body 11 a, 11 b has a thermal conductivity of at least 100 W / (m * k) , preferably from at least 150 W / (m * k).
- the axial position of the bearing elements 10a, 10b along the axial direction A is expediently determined so that the radial forces absorbed by the bearing elements 10a, 10b pass on to the heat transfer bodies 8a, 8b to less than 35%, preferably less than 10% - be directed. In this way, an overload of the respective heat transfer body 8a, 8b is avoided.
- the material of the first and second housing parts 8a, 8b can also have a higher upper yield strength and a higher proof stress than the material of the heat transfer body 11a, 11b.
- FIG. 2 is a detailed illustration 1 is in the area of the first heat transfer body 11 a.
- a heat transfer structure 18 for transferring waste heat from the rotor 5 to the heat transfer body 11 a is formed on the first heat transfer body 11 a and on the rotor 5.
- the heat transfer structure 18 comprises a plurality of projections 21, which protrude from the rotor 5 to the first heat transfer body 11 a along the axial direction A and which engage in complementary recesses 20 provided on the heat transfer body 11 a.
- FIGS. 1 is in the area of the first heat transfer body 11 a.
- the first heat transfer body 11 a comprises a plurality of projections 21 projecting axially from the heat transfer body to the rotor 5, said projections 21 being complementary to the projections 21 , Engage recesses 20 provided on the rotor 5.
- the projections 21 can preferably be formed like a comb.
- a distance X measured in the area of the heat transfer structure 18 between the heat transfer body 11 a and the rotor 5 along the axial direction is expediently at most 1 mm, preferably at most 0.5 mm.
- a recess depth T1 of the recesses T1 forming the heat transfer structure 18 on the first heat transfer body 11a or a projection flea H 1 of the projections 21 forming the heat transfer structure 18 on the first heat transfer body 11a is at least three times , preferably at least five times, the above-mentioned wall thickness W of the cooling plate.
- the illustration in FIG. 2 also shows that the first housing part 8a has a (first) fastening section 23a, to which the first heat transfer body 11a is fastened.
- the bearing device 9 for rotatably mounting the rotor 5 is attached to the (first) fastening section 23a.
- the (first) fastening section 23a is expediently projecting axially inward from the first housing part 11a into the housing interior 3 Sleeve 24 formed, on the inside 25 of which the first bearing element 10a of the bearing device 9 is arranged.
- the second housing part 8b also has such a (second) fastening section (23b) to which the second heat transfer body 11b and the rotor 5 are fastened.
- the second bearing element 10b of the bearing device 9 can be attached to the second fastening section 23b.
- first heat transfer body 11 a and for the first housing part 8 a associated with this first heat transfer body 11 a also apply mutatis mutandis to the second heat transfer body 11 b and the second housing part 8 b assigned to the second heat transfer body 11 b .
- An annular gap 27, which is part of the coolant chamber 15, can expediently be formed between the winding end sections 26 of the stator coils 13, which protrude into the coolant chamber 15, and the heat transfer bodies 11 a, 11 b.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018215607.7A DE102018215607A1 (de) | 2018-09-13 | 2018-09-13 | Elektrische Maschine, insbesondere für ein Fahrzeug |
| PCT/EP2019/069902 WO2020052845A1 (de) | 2018-09-13 | 2019-07-24 | Elektrische maschine, insbesondere für ein fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3850732A1 true EP3850732A1 (de) | 2021-07-21 |
Family
ID=67439224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19744689.1A Pending EP3850732A1 (de) | 2018-09-13 | 2019-07-24 | Elektrische maschine, insbesondere für ein fahrzeug |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12003161B2 (de) |
| EP (1) | EP3850732A1 (de) |
| JP (1) | JP7344957B2 (de) |
| CN (1) | CN112714995B (de) |
| DE (1) | DE102018215607A1 (de) |
| WO (1) | WO2020052845A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025100079A1 (ja) * | 2023-11-10 | 2025-05-15 | 三菱自動車工業株式会社 | 磁石冷却構造 |
| WO2025217095A1 (en) * | 2024-04-09 | 2025-10-16 | American Axle & Manufacturing, Inc. | Air gap sleeve assembly for an electric drive module |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH545552A (de) * | 1973-03-09 | 1974-01-31 | ||
| JPS6172063U (de) * | 1984-10-12 | 1986-05-16 | ||
| JPS6329365U (de) * | 1986-08-11 | 1988-02-26 | ||
| US5214325A (en) * | 1990-12-20 | 1993-05-25 | General Electric Company | Methods and apparatus for ventilating electric machines |
| FR2711283B1 (fr) * | 1993-10-13 | 1995-11-24 | Valeo Equip Electr Moteur | Alternateur de véhicule à refroidissement amélioré. |
| JP3300200B2 (ja) * | 1995-06-20 | 2002-07-08 | 株式会社日立製作所 | 回転電機及び電動車両 |
| DE29811436U1 (de) * | 1998-06-26 | 1999-10-28 | Robert Bosch Gmbh, 70469 Stuttgart | Elektrische Maschine, insbesondere flüssigkeitsgekühlter Drehstromgenerator |
| JP3675322B2 (ja) * | 2000-09-18 | 2005-07-27 | 株式会社日立製作所 | 車両用交流発電機 |
| EP1237256A3 (de) * | 2001-02-28 | 2004-11-10 | Hitachi, Ltd. | Getriebe für Fahrzeugwechselstromgenerator |
| DE10114470A1 (de) | 2001-03-24 | 2002-09-26 | Bosch Gmbh Robert | Spurhalte- und Fahgeschwindigkeitsregeleinrichtung für Kraftfahrzeuge |
| DE102010029986A1 (de) * | 2010-06-11 | 2011-12-15 | Siemens Aktiengesellschaft | Dynamoelektrische Maschine mit Luft-Flüssigkeitskühlung |
| US8614538B2 (en) * | 2010-06-14 | 2013-12-24 | Remy Technologies, Llc | Electric machine cooling system and method |
| US8482169B2 (en) * | 2010-06-14 | 2013-07-09 | Remy Technologies, Llc | Electric machine cooling system and method |
| US8482168B2 (en) * | 2010-08-25 | 2013-07-09 | Clean Wave Technologies, Inc. | Systems and methods for fluid cooling of electric machines |
| US20130342052A1 (en) | 2012-06-22 | 2013-12-26 | GM Global Technology Operations LLC | Electric machine with circumferential rotor and housing fins |
| CN102810943B (zh) * | 2012-07-31 | 2016-04-27 | 联合汽车电子有限公司 | 内转子电机的冷却结构 |
| US9209661B2 (en) * | 2012-10-02 | 2015-12-08 | Remy Technologies, L.L.C. | Electric machine including a housing having materially integrally formed coolant channels and an outer sleeve |
| WO2014152390A1 (en) * | 2013-03-14 | 2014-09-25 | United Technologies Corporation | Bearing assembly with lubricant/coolant passages |
| EP2933902B1 (de) * | 2014-04-17 | 2016-06-01 | Siemens Aktiengesellschaft | Entwärmung einer elektrischen Maschine |
| DE102015006688A1 (de) * | 2015-05-28 | 2016-12-01 | Sew-Eurodrive Gmbh & Co Kg | Antriebsvorrichtung |
| DE102015007588A1 (de) * | 2015-06-16 | 2016-12-22 | Audi Ag | Elektrische Maschine |
| AT517533B1 (de) * | 2015-07-20 | 2017-06-15 | Avl List Gmbh | Elektrische Maschine |
-
2018
- 2018-09-13 DE DE102018215607.7A patent/DE102018215607A1/de not_active Withdrawn
-
2019
- 2019-07-24 US US17/276,119 patent/US12003161B2/en active Active
- 2019-07-24 JP JP2021513214A patent/JP7344957B2/ja active Active
- 2019-07-24 EP EP19744689.1A patent/EP3850732A1/de active Pending
- 2019-07-24 CN CN201980060219.1A patent/CN112714995B/zh active Active
- 2019-07-24 WO PCT/EP2019/069902 patent/WO2020052845A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN112714995B (zh) | 2024-10-29 |
| WO2020052845A1 (de) | 2020-03-19 |
| JP7344957B2 (ja) | 2023-09-14 |
| US20220037951A1 (en) | 2022-02-03 |
| US12003161B2 (en) | 2024-06-04 |
| CN112714995A (zh) | 2021-04-27 |
| JP2022500979A (ja) | 2022-01-04 |
| DE102018215607A1 (de) | 2020-03-19 |
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