EP3928417A1 - Carter de machine électrique segmenté en plusieurs parties - Google Patents

Carter de machine électrique segmenté en plusieurs parties

Info

Publication number
EP3928417A1
EP3928417A1 EP19706585.7A EP19706585A EP3928417A1 EP 3928417 A1 EP3928417 A1 EP 3928417A1 EP 19706585 A EP19706585 A EP 19706585A EP 3928417 A1 EP3928417 A1 EP 3928417A1
Authority
EP
European Patent Office
Prior art keywords
housing
segments
stator
segment
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19706585.7A
Other languages
German (de)
English (en)
Inventor
Frank Rieder
Simone SPIELMANN
Patrick SANTHERR
Stefan Cölsch
Daniel EINSIEDLER
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.)
Albert Handtmann Metallgusswerk GmbH and Co KG
Original Assignee
Albert Handtmann Metallgusswerk GmbH and Co KG
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 Albert Handtmann Metallgusswerk GmbH and Co KG filed Critical Albert Handtmann Metallgusswerk GmbH and Co KG
Publication of EP3928417A1 publication Critical patent/EP3928417A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/06—Cast metal casings
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components

Definitions

  • the invention relates to a housing, in particular a cast housing for an electric machine, as well as a method for manufacturing such a housing by means of casting, in particular pressure casting.
  • Die-cast housings for electric motors are already known from the prior art, for example from WO 2018/091722 A1 or DE 102015202918 A1.
  • housings e.g. Cast housing for electrical machines, in particular die cast housing, formed with a one-piece outer sleeve which extends essentially rotationally symmetrically around the central axis of a stator.
  • the term “one-piece sleeve” is understood as follows: The outer sleeve extends around the electric motor, i.e. around the stator, and represents an uninterrupted geometry that is manufactured as a single part. Light metal sand casting, permanent mold casting, but also die casting. The one-piece design does not apply to the entire motor housing; covers or parts of a transmission housing can also be attached to the outer sleeve separately (usually screwed or glued).
  • the introduction of an inner sleeve to hold the stator is also included in the one-piece design.
  • the one-piece design therefore relates to a main housing that is cast in one piece or manufactured in some other way (e.g. extruded sleeves), which usually contains the cooling geometry but also a bearing area for rotor bearings.
  • Such one-piece housings have, for example, circumferential cooling channels.
  • the production of the cooling geometry entails problems, since a corresponding cooling geometry generally cannot be produced without complex mechanical processing.
  • Problems also arise in other processes, such as sand casting or chill casting, with one-piece constructions of the stator shell or the outer sleeve - especially when sand cores are used to represent the cooling geometry, the complete emptying / desanding of the cooling geometry after casting is often a major problem .
  • the cooling geometry is generated or closed by the outer housing and a separate inner sleeve which is inserted into the outer sleeve and serves as a stator carrier.
  • This inner sleeve that surrounds the stator and carries is, for example, connected to the outer sleeve by means of complex welding processes.
  • stator or the inner sleeve is often not sufficiently clamped by the outer sleeve under load, or does not sit ideally in the housing, that is, the stator may not be held sufficiently secure against rotation, which poses problems in terms of torque transmission.
  • One-piece shell constructions thus have disadvantages with regard to the stator seat.
  • this inner sleeve is often not adequately supported to the outside.
  • the object of the present invention is to provide an improved housing for an electric machine and a method for manufacturing such a housing, which can also be manufactured easily and inexpensively.
  • the invention relates to a housing, in particular a cast housing.
  • a corresponding housing is advantageously manufactured as a die-cast housing by means of die casting, but can also be manufactured, for example, by means of permanent mold casting, sand casting or by 3D printing.
  • the housing is advantageously a metal housing, in particular a light metal housing.
  • a light cast steel is also suitable. Particularly suitable materials are zinc, aluminum or magnesium.
  • a housing thus comprises a plurality of housing segments joined together to form an outer sleeve. These housing segments form the outer sleeve that surrounds the stator. This means that the outer sleeve is no longer made in one piece as in the prior art, but rather comprises several segments that surround the stator around the central axis.
  • the segments can be designed in a modular manner so that several engine variants contain some of the segments as identical parts. Changes can be implemented cost-effectively, since only the segment or segments concerned have to be changed or redesigned. Production errors then only affect the segment concerned and not the entire outer jacket, so that the loss of added value in the case of cast scrap is reduced. In addition to the manufacturing advantages, improved torque transmission is also ensured compared to conventional die-cast housings, in particular because the inner sleeve surrounds the stator over a large area and rests firmly on the stator core and the outer sleeve and does not bulge even under higher loads and temperature fluctuations.
  • a support of the inner sleeve does not have to be represented by separate components.
  • At least one segment can have an integrated cooling device.
  • all housing segments have a corresponding cooling device.
  • Due to the segmentation of the cast housing the cooling geometry presented in the individual housing segment can be produced by final casting without mechanical processing. This is not possible with one-piece cast housings, since one or more undercuts would result depending on the cooling geometry. The problem of a high processing allowance due to the draft angle is also eliminated, which means that processing costs, shot weight and rejects can be greatly reduced.
  • the housing is a die-cast housing, there is no need for time-consuming removal of cores, as is the case e.g. can be used in the permanent mold casting process.
  • no residues of nuclei, e.g. Grains of sand cause problems in the subsequent cooling circuit.
  • the modular structure ensures a high degree of variability, since, for example, different housing segments can be designed differently.
  • the solution can be used in the sense of a "construction kit" for different variants and vehicles.
  • the segmentation also enables large-volume housings, e.g. by means of die casting.
  • the cooling device has at least one connection for the flow and at least one connection for the return of a cooling medium in the housing segment.
  • the connections can be arranged in such a way that cooling medium can be supplied and discharged from the outside to each housing segment or cooling medium can be passed from segment to segment. Since the individual segments can have the cooling device with corresponding connections, the efficiency of the cooling can be significantly increased due to lower pressure losses.
  • the cooling device has an inwardly facing free surface which, in the assembled state of the housing segments, is directed inward - that is, towards the central axis. This surface is preferably structured, ie has elevations or depressions in such a way that, for example, the cooling medium can flow over an uneven surface, so that turbulence occurs which significantly improves the heat transfer.
  • the cooling device has a cooling geometry such that the free surface is structured or shaped in such a way that if, for example, the surface is covered with a cover, at least one channel for a cooling medium is formed.
  • Such channels can, for example, be designed in a meandering manner so that the cooling medium can flow in a meandering manner between the connections.
  • the surface geometry of the free surface can be freely designed and cast according to customer requirements and / or based on simulation data.
  • the cooling device is sealed off from the outside.
  • the respective housing segment can have a recess in the area of the cooling device, in which the free surface is arranged set back. If the free Oberflä surface is set back compared to the inner surface of the housing segments, the space in which the cooling medium flows can simply be closed by a cover, according to a further embodiment also flush with the inner surface of the outer sleeve or by a separate component in the segment.
  • the respective housing segment can each have a cover element as a cover in order to seal the cooling device of the housing segment towards the inside, i.e. in the direction of the central axis of the stator.
  • the housing can also be designed in such a way that the respective cooling device is tightly closed by means of an inner sleeve, in particular a tubular stator carrier, arranged in the outer sleeve. The stator is pressed into the inner sleeve or the tubular stator carrier, for example. If the inner sleeve - ie the stator carrier - closes the cooling device in a sealing manner towards the inside, this is particularly advantageous since material can be saved and, in some cases, handling during assembly can be dispensed with.
  • the housing has at least two housing segments.
  • the housing is designed in such a way that there are a number of housing segments, so that two half-shells can then be formed during assembly, with a stator or the stator being inserted in an inner sleeve between the half-shells .
  • the housing segments are structurally identical, since manufacturing costs can be reduced in this way. But it is also advantageous in terms of manufacturing costs if at least some of the housing segments are identical. A non-even number of segments is also possible.
  • the cooling devices of the housing segments can be separated from one another in the assembled state. This has the advantage that the individual housing segments can be cooled independently of one another, and that different operating parameters can be set, such as coolant temperature, flow rate, cooling medium, etc.
  • Separate cooling devices in the individual segments have the essential advantage that no seal is necessary for the cooling medium from segment to segment.
  • at least two cooling devices of the housing segments are connected in such a way that the cooling medium can flow from the housing segment to the housing segment, in which case a channel for the cooling medium can also be formed around the housing segments.
  • the housing segments can, for example, be made of an aluminum alloy by means of die casting.
  • the tubular stator carrier or the inner sleeve can be held in the outer sleeve by means of an interference fit. This ensures that the stator is held firmly in the housing. This is also particularly advantageous because the stator or its stator holder rests against the sleeve over a large area and, in comparison to the prior art, a gap formation between the stator carrier and the outer sleeve or bulging of the inner sleeve can be avoided, which in turn leads to a better torque transmission leads.
  • the geometry of the segmented housing forms a support for the stator or the stator carrier.
  • the side surfaces on which the individual housing segments are laterally connected to one another run in a plane that is spanned by a directional vector that runs parallel to the stator center axis. Ie the segment boundaries run parallel to each other. In addition to this parallel segmentation, non-parallel segments are also (eg diamond-shaped segmentations or S-shaped or otherwise shaped segmentation boundaries) possible, that is, the housing segments, viewed in the axial direction, have a non-constant segment circumference.
  • the individual housing segments are connected to one another by means of a connecting device, in particular by means of a screw connection or a screw and adhesive connection or a rivet connection or a rivet and adhesive connection.
  • a combined screw / rivet and adhesive connection has the advantage that the housing is even better protected from outside moisture.
  • a sealing material / element can also be used between the connecting surfaces, in particular in a recess provided for this purpose, e.g. Groove, are introduced.
  • a corresponding screw connection or screw and adhesive connection can be implemented inexpensively and easily.
  • the housing segments can have connecting flanges on their two sides which protrude beyond the outer surface of the housing segments. Adjacent housing segments can be connected to one another via the flanges or the connecting surfaces of the flanges facing one another.
  • the flanges extending in the axial direction increase the stability of the outer sleeve significantly and enable a press fit of the Sta tor or its carrier in the sleeve.
  • the housing segments each have a flange section on their top and bottom, via which the outer sleeve is connected to a respective cover element or bearing plate.
  • the housing has an inner sleeve, that is to say in particular a tubular stator carrier.
  • the inner sleeve has at least one projection, in particular at least one rib, as an anti-twist device, which each engages in a corresponding recess in a corresponding housing segment.
  • This rib preferably runs in relation to the direction of rotation, preferably in the axial direction, in such a way that the stator can be held in the outer sleeve so that it cannot rotate.
  • a correspondingly designed inner sleeve also fulfills the task of reliable torque transmission and serves to close the cooling geometry, ie the recesses in the housing segments.
  • the inner sleeve can for example also be made of light metal, for example aluminum.
  • a plurality of housing segments are advantageously manufactured by means of die casting and are assembled to form an outer sleeve of the die cast housing in which a stator is received.
  • the stator comprises, for example, a tubular stator carrier which is arranged around the stator.
  • the method according to the invention have the following steps:
  • housing segments Production of a predetermined number of housing segments, in particular by means of a casting process. Then some of the housing segments are preassembled, in particular into a sleeve half. The stator can then be inserted into the preassembled housing segments. It is particularly advantageous if a sleeve half has been preassembled, since the stator or stator carrier can be easily and securely inserted and positioned and held by the sleeve half. Subsequently, the housing segments are closed to form a closed sleeve and preferably pressed, either as a plurality of housing segments being preassembled, in particular to a sleeve half, or the housing segments being attached individually.
  • the stator or its tubular support then preferably rests against the inside of the sleeve over a large area and is held by means of a press fit.
  • the stator or its carrier can also be fixed, but does not have to be.
  • the upper and lower opening of the outer sleeve can then be closed, for example, with respective cover elements or bearing caps.
  • the cover elements can also be designed to be functionally integrated, e.g. as a bearing shield for a gearbox, or as a housing part for the necessary power electronics.
  • the invention also relates to an electric machine with a housing according to at least one of claims 1 to 12.
  • the invention also relates to a kit with several joinable housing segments for producing a housing according to at least one of claims 1 to 12.
  • Fig. 1 a shows a schematic perspective view of two pre-assembled Hül senhggedn a housing according to the present invention
  • Fig. 1b shows a schematic perspective view of the hous ses shown in Fig. 1a in the assembled state
  • Fig. 2 shows a rough schematic cross-section through a housing according to the invention
  • Fig. 3 shows schematically a longitudinal section through a housing according to the present invention
  • FIG. 4 shows a perspective view of a housing segment without a cover element, a cover element and a housing segment with a cover element
  • Fig. 5 shows a tubular stator carrier
  • Fig. 6 shows a further embodiment according to the present invention in a perspective view with connections for the cooling medium on the connecting surfaces
  • Fig. 7 shows a side view of a housing according to a furtherdistinsbei game of the present invention
  • FIG. 8 shows a section along line A-A in FIG. 7 and an enlargement of section B
  • FIGS. 1 a, 1 b and 3 show roughly schematically the housing 1 according to the invention for an electric machine, for example an electric motor.
  • the housing is preferably a cast housing, in particular a die-cast housing.
  • the housing 1 has an outer sleeve 2 in which a stator 18, which has a preferably tubular stator carrier not shown separately here (see FIG. 5), is arranged.
  • the stator carrier is preferably designed as a hollow cylinder. The stator is pressed into the stator carrier, for example.
  • the outer sleeve 2 of the housing 1 has a plurality of housing segments 3.
  • the sleeve 2 comprises, for example, 6 housing segments 3a to 3f.
  • the housing segments form the essentially hollow-cylindrical outer sleeve 2, the cross section of which is shown roughly schematically in FIG. 2, for the sake of simplicity, no flanges 10 and no stator carrier in the form of an inner sleeve 24 being shown here.
  • the housing segments 3 are structurally identical and each have a cooling device 4. However, it is also possible that not all housing segments 3 have a cooling device 4. There is also the possibility that the housing segments 3 are not all are identical. In this way, different specific requirements can be responded to.
  • the cooling device 4 comprises at least one connection 5 for the flow and at least one connection 6 for the return of a cooling medium.
  • the connections 5 and 6 are arranged on the outer jacket surface 9 and protrude as a pipe socket from the jacket surface 9 and can with appropriate lines,
  • the cooling device 4 also includes a free surface 7, as shown in FIG. 4.
  • the free surface 7 is preferably structured, i. E. it has elevations or depressions so that, for example, the cooling medium can flow over the uneven surface 7 between flow 5 and return 6 when this area goes inwards, as he explains below, via a cover, for example via a cover element 14 or an inner sleeve 24 is closed.
  • the structured surface that is, its geometry, creates flow courses and / or turbulence that favor heat transfer.
  • the surface 7 it is also possible for the surface 7 to be structured in such a way that at least one channel 12 is formed for the cooling medium.
  • the free surface 7 is sealed off, for example by means of a cover element 14, as shown in FIG. 4, so that the cooling medium flows from the flow 5 via the free surface to the return 6 or from the flow 5 e.g. can run meandering over at least one channel 12 to the return 6.
  • the cover rests on the elevations to form the channel.
  • the respective housing segment advantageously has a recess 13 in the region of the cooling device 4, as shown in FIG. 4, in which the free surface 7, from which the elevations extend, is arranged set back.
  • the housing segment can for example be formed from a light metal alloy, for example from an aluminum alloy, and the cover element can be made from an aluminum sheet, for example.
  • the cover elements can be made from an aluminum sheet, for example.
  • other materials, such as steel or plastic, and alternative manufacturing methods are also conceivable for the cover elements.
  • the cover element 14 is preferably joined to the housing segment around the surface 7, for example glued or welded.
  • a seal around the free surface 7 can also be arranged. Seal and / or adhesive are preferred in the area of the recess 13 or a recess, ie a reservoir around the free surface 7 (for example groove, not provided) around the surface so that the cover can be flush with the inner surface of the sleeve.
  • the stator or its carrier presses against the cover element 14, which promotes a seal. If, for example, the stator comprises a tubular stator carrier 24, as is illustrated, for example, in FIG. 5, the cover element 14 can be dispensed with.
  • stator ie the tubular stator carrier
  • cover element 14 seal the space above the surface 7 in which the cooling medium flows, with the seal e.g. via a press fit but also here
  • Carrier or the inner sleeve 24 can be glued on, with adhesive and / or a seal around the surface 7, in particular in the recess 13 or a recess around the surface 7 can be arranged, such that the carrier, for example, flat on the Inner wall of the sleeve can rest.
  • Fig. 1 b, 2 and 3 show the housing in the assembled state.
  • the housing segments have connecting flanges O on their sides, which protrude beyond the outer surface 9 of the housing segments and which extend in the axial direction.
  • the flanges 10 give the housing particular stability.
  • the housing segments are connected to one another via the flanges or the lateral connecting surfaces 8 (see e.g. Fig. 2 and Fig. 1a).
  • the housing segments 3 are connected to one another by means of a connecting device 29, in particular by means of a screw connection or a screw and adhesive connection.
  • 1b shows a screw connection with several screws in the area of the flanges 10.
  • the Ge housing segments 3 in this embodiment also on their top and bottom respective flange portions 11 a and 11 b, via which, as shown in FIG. 3, the sleeve 2 with corresponding cover elements or Bearing plates 19a, 19b can be connected and preferably sealed (for example by means of an adhesive or seal).
  • the cooling device 4 is sealed by the cover element 14.
  • Reference numeral 21 denotes a gear housing 21, the gear of which is connected to the electric motor in the housing, the rotor not being shown in the figures for the sake of simplicity.
  • connections 5 and 6 on the outside of the housing segments 3 are also possible, for example, on the end faces above and below. It is also possible that the connections, as can be seen from FIG. 6, are arranged in the area of the connecting surface 8, the connections being guided through the housing segment in such a way that they are in an upper or lower area of the free surface 7 or in the area of the recess 13 open.
  • at least two cooling devices 4 of the housing segments can be connected to one another such that the cooling medium can flow from housing segment to housing segment.
  • a channel for the cooling medium running around the housing segments can also be realized in this way.
  • Figures 7 and 8 show a further preferred embodiment according to the present invention.
  • Figure 7 shows a side view of the housing according to the invention in the assembled state.
  • Figure 8 is a section along the line A-A in Figure 7.
  • the outer sleeve 2 has, for example, 3 segments 3a, 3b and 3c.
  • the stator 18 here has the tubular stator carrier 24 in the form of the inner sleeve 24.
  • the inner sleeve 24 has a plurality of ribs 40 extending axially here, for example, on the surface, as can also be seen in particular from FIG.
  • Each segment 3 preferably has at least one rib 40.
  • the projection in particular the rib 40, can engage in a complementary recess 41 in the associated segment.
  • the recess 41 is preferably arranged richly in a Be where two adjacent housing segments 3A, 3B abut each other and to the connecting surface 8 of the flanges 10 at which the two segments abut ge opens.
  • the ribs generally require at least one-sided contact with at least one housing segment to be able to transmit torque in one direction of rotation. If the machine is used as an electric motor and for recuperation as a generator, a form fit is advantageous for transmitting torque in two directions of rotation, i.e. through contact on both sides.
  • the ribs 41 have contact with the housing segments at least on one side, preferably on both sides, and are therefore framed in a form-fitting manner.
  • the projections in this case the ribs, thus serve as an anti-twist device, which is particularly advantageous at high torques.
  • housing segments 3 for example by means of Die-cast manufactured.
  • six housing segments 3a to 3f are manufactured.
  • the housing segments 3 then have, as can be seen from FIG. 4, the inwardly directed free structured surface 7 of the cooling device 4, which can then be sealed around the surface 7 by gluing to the cover element 14, for example.
  • the cooling device 4 can also, as described above, be closed by the stator carrier or the inner sleeve 24.
  • a plurality of housing segments are then preassembled in that the housing segments 3 are firmly connected to one another by means of connecting device 29.
  • the housing segments 3 are firmly connected to one another by means of connecting device 29.
  • the stator 18 can now be inserted into this half-shell. If, as has been described in connection with FIGS. 7-9, an inner sleeve 24 with projections or ribs 40 is provided, the ribs 40 are inserted into the recesses 41 when the stator 18 is installed.
  • the sleeve 2 must then be closed, in which case further pre-assembled housing segments in the form of a half-shell are placed and connected.
  • the segment 3a is connected to the segment 3d and the segment 3c to the segment 3f via corresponding connecting devices 29.
  • the inside dimension of the sleeve, i.e. the inside diameter and the outside dimension, i.e. the outer diameter of the stator or its stator carrier 24 are coordinated so that when the sleeve is closed, a press fit is created and the stator or the sleeve rests against the inside of the sleeve 2 over a large area and is held securely against rotation, preferably additionally by the ribs as previously described.
  • the stator does not have to be additionally fixed, but can be fixed (e.g. by gluing or other grooves). It is economically preferable to dispense with further fixation other than a press fit.
  • the rotor is not shown in the figures.
  • Cover elements or bearing shields 19a, 19b can then also be attached to the respective ends of the sleeve 2, as shown in Fig. 3, and fastened with corresponding connecting devices 29, e.g. be screwed or screwed and glued.
  • An electric machine with a housing is used, for example, to drive a motor vehicle.
  • the invention also relates to a kit with several housings segments that can be assembled together for producing the housing.
  • the outer sleeve 2 has a round cross section, the present invention not being restricted to this shape.

Abstract

L'invention concerne un carter pour une machine électrique et un procédé de fabrication du carter, ledit carter étant constitué de plusieurs segments de carter assemblés de façon à former un manchon extérieur, au moins un desdits segments comprenant un dispositif de refroidissement.
EP19706585.7A 2019-02-20 2019-02-20 Carter de machine électrique segmenté en plusieurs parties Pending EP3928417A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/054163 WO2020169189A1 (fr) 2019-02-20 2019-02-20 Carter de machine électrique segmenté en plusieurs parties

Publications (1)

Publication Number Publication Date
EP3928417A1 true EP3928417A1 (fr) 2021-12-29

Family

ID=65516623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19706585.7A Pending EP3928417A1 (fr) 2019-02-20 2019-02-20 Carter de machine électrique segmenté en plusieurs parties

Country Status (2)

Country Link
EP (1) EP3928417A1 (fr)
WO (1) WO2020169189A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021124101A1 (de) * 2021-09-17 2023-03-23 Joma-Polytec Gmbh Kühlanordnung und Antriebsanordnung mit einer solchen Kühlanordnung
CN113991927B (zh) * 2021-12-10 2022-12-06 无锡天宝电机有限公司 一种电机的机壳结构
DE102022209863A1 (de) 2022-09-20 2024-03-21 Volkswagen Aktiengesellschaft Verfahren zur Herstellung einer Statorbaugruppe mit Kühlstruktur
CN115912797B (zh) * 2022-12-13 2023-11-07 上海乐来汽车分析测试有限公司 一种新能源汽车电机加载轴电磁噪声电流抑制装置

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Publication number Priority date Publication date Assignee Title
DE29606474U1 (de) * 1996-04-09 1997-08-07 Siemens Ag Maschineneinheit mit mehreren an deren Gehäuseumfang angeordneten Kühlsegmenten
US20090079278A1 (en) * 2007-09-20 2009-03-26 Kramer Dennis A Segmented motor cooling jacket
DE102012016208A1 (de) * 2012-08-16 2014-02-20 Volkswagen Aktiengesellschaft Aggregat und Gehäuse mit einem Kühlmantel
KR101211638B1 (ko) * 2012-09-27 2012-12-12 우현범 냉각 기능을 갖는 전기 자동차용 모터
DE102015202918B4 (de) 2014-04-07 2023-11-16 Valeo Eautomotive Germany Gmbh Gehäuse einer elektrischen Maschine, elektrische Maschine, Kraftfahrzeug und Verfahren zum Kühlen einer elektrischen Maschine
EP3542448A1 (fr) 2016-11-21 2019-09-25 Albert Handtmann Metallgusswerk GmbH & Co. KG Carter d'un moteur électrique
EP3553922A1 (fr) * 2018-04-09 2019-10-16 Carl Freudenberg KG Dispositif formant boîtier pour une machine électrique dotée d'un revêtement en matière plastique

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WO2020169189A1 (fr) 2020-08-27

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