EP4115504A1 - Boîtier pour moteur électrique - Google Patents

Boîtier pour moteur électrique

Info

Publication number
EP4115504A1
EP4115504A1 EP21709323.6A EP21709323A EP4115504A1 EP 4115504 A1 EP4115504 A1 EP 4115504A1 EP 21709323 A EP21709323 A EP 21709323A EP 4115504 A1 EP4115504 A1 EP 4115504A1
Authority
EP
European Patent Office
Prior art keywords
housing part
metal
housing
plastic
cooling channel
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
EP21709323.6A
Other languages
German (de)
English (en)
Inventor
Heinz Kuhlmann
Axel Neukirchen
Thomas Raidt
Gregor Niesmann
Oliver BÜSCHER
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.)
Winkelmann Powertrain Components GmbH and Co KG
Original Assignee
Winkelmann Powertrain Components 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 Winkelmann Powertrain Components GmbH and Co KG filed Critical Winkelmann Powertrain Components GmbH and Co KG
Publication of EP4115504A1 publication Critical patent/EP4115504A1/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
    • H02K5/20—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
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • 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
    • H02K5/08—Insulating casings

Definitions

  • the invention relates to a housing for an electrical machine, in particular ei NEN electric motor, with an inner housing part and an outer housing part surrounding the inner housingseteil, with a cooling duct forming space between the two housing parts, with one housing part on the space facing the space Side is provided with a best existing cooling channel structure made of plastic and wherein a housing part is made of metal and the other housing part is made of plastic
  • rotary electrical Ma machines with a high power density are used as drive machines to an increasing extent.
  • a cooling jacket is usually provided on the outer wall of the electrical machine, through the cooling space of which a cooling fluid, e.g. water, flows during operation of the machine.
  • a housing arrangement for an electrical machine which has an inner and outer jacket and at least one intermediate cooling duct for cooling the electrical machine, the cooling duct being designed to transport a cooling liquid.
  • the inner jacket is made of metal, in particular die-cast aluminum
  • the outer jacket is made of plastic, with the outer jacket made of plastic on its inner surface with flow-guiding structures that form the cooling channel is provided.
  • These structures can be implemented as channels, webs or sealing lips and can be manufactured together with the outer plastic jacket in a two-component injection molding process. Such a manufacturing process is expensive and therefore in need of improvement.
  • a housing with the features of the preamble of claim 1 is known from DE 10 2005 052 363 A1.
  • a sleeve made of plastic with a cooling channel structure is arranged around the inner housing part. This sleeve can also be molded onto the housing.
  • the cuff is an additional component and good heat dissipation to the cooling medium is only guaranteed if the plastic of the cuff has good thermal conductivity properties.
  • the object of the invention is therefore to create a housing for an electrical machine that is easy to assemble, can be manufactured in a particularly simple manner and enables effective cooling.
  • cooling channel structure has webs which are injection-molded onto the metal housing part, the webs forming cooling channels that are open along the length of the gap to the metal housing part.
  • the invention enables a particularly simple production of the housing, since the webs of the cooling channel structure made of plastic are simply molded onto the housing part made of metal, so that no two-component injection molding process is required.
  • the metal housing part can be the inner housing part, in this case the webs of the cooling channel structure are molded on the outside, or the metal housing part can be the outer housing part, in which case the webs are molded on the inside.
  • the metal housing part also serves to improve electromagnetic compatibility (EMC protection).
  • EMC protection electromagnetic compatibility
  • the cooling medium is in direct contact with the housing part due to the cooling channels open to the metal housing part, so that particularly good heat dissipation is ensured. It is preferably provided that the cooling channel structure is made of a thermosetting plastic.
  • thermoplastics or elastomers can also be used.
  • the cooling channel structure can, for example, be formed in the shape of a spiral ring or meander or have axially extending webs. It can also have chambers that are separate from one another.
  • cooling channel structure and / or the housing part made of plastic consists of foamed plastic, at least in some areas.
  • the component or components then serve or serve at the same time for sound absorption.
  • the housing part is made of metal by forming, which enables a particularly simple and inexpensive manufacture.
  • the housing part made of metal is pot-shaped, the pot bottom forming a bearing plate for the rotor of the electrical machine.
  • the bottom of the pot can be closed or have a passage opening for the rotor.
  • a cover is provided on the side of the metal housing part facing away from the pot bottom, which cover also forms a bearing plate for the rotor.
  • the cover can be closed or have a passage opening for the rotor.
  • the housing part made of metal can also be tubular and equipped on both sides with a cover that forms an end shield, at least one cover then having a passage opening for the rotor.
  • the inner housing part is made of metal and, accordingly, the outer housing part is made of plastic.
  • the housing part made of plastic is preferably also made of a thermoset, but in certain applications a thermoplastic or elastomer can also be used.
  • the invention is explained in more detail below with reference to the drawing. This shows in
  • FIG. 1 shows a longitudinal section through a housing for an electrical machine with an indicated stator
  • FIG. 2 is a perspective exploded view of FIG. 1.
  • a housing for an electrical machine, in particular an electric motor, is denoted generally by 1 in the drawings.
  • a tubular stator is indicated and denoted by 2.
  • a rotor shaft, not shown, of the electrical machine is arranged inside the tubular stator 2, which is equipped with laminated cores, for example.
  • the housing 1 is designed in two parts and has an inner housing part 3 and an outer housing part 4, with an intermediate space 5 between the two housing parts 3 and 4 which forms a cooling channel in the manner described in more detail below.
  • the inner housing part 3 is made of metal and the outer housing part 4 is made of plastic, preferably of thermosetting plastic.
  • the space 5 between the inner housing part 3 and the outer housing part 4 Ge is provided with a cooling channel structure, which has webs 6 in themonysbei game. These webs 6 can be spiral-shaped or meandering and thereby form cooling channels along the length of the space 5, into which a cooling medium, e.g. water, is introduced or discharged in order to cool the stator 2 from the outside.
  • a cooling medium e.g. water
  • the cooling channel structure (webs 6) made of plastic, preferably of thermoset plastic, is attached to the inner housing part 3 is molded from metal. This makes the production of the cooling channel structure very simple, because it is only necessary to insert the inner housing part 3 into the injection mold and inject the cooling channel structure (webs 6) onto the inner housing part 3 made of metal.
  • the inner housing part 3 made of metal is preferably Herge by push-fitting and is pot-shaped, the pot bottom being denoted by 3a.
  • the water pot bottom 3a has an opening 7 for the passage of the rotor shaft of the electrical machine and can be designed as a bearing plate for the rotor shaft.
  • the inner housing part 3 made of metal with the cooling channel structure is simply pushed onto the stator 2 during the installation and can be connected to it (e.g. by press fit or shrinking).
  • the outer housing part 4 made of plastic, preferably made of thermosetting plastic, can also be designed in the shape of a pot, the ring-shaped area of the pot bottom is denoted by 4a.
  • the outer housing part 4 is slipped onto the cooling channel structure (webs 6) of the inner housing part 3 from the outside, in the exemplary embodiment shown in such a way that the pot bottom 4a rests against the pot bottom 3a.
  • the housing 1 described so far is open on the side facing away from the pot bottoms 3a, 4a and is subsequently preferably closed with a cover 8, which can also be made of plastic and is suitably connected to the outer housing part 4, for which the outer housing part 4 has a has circumferential collar 9.
  • the cover 8 has on the inside an opening 10 for the passage of the rotor shaft and can also be designed as a bearing plate for the rotor shaft.
  • the inner housing part 3 can also consist of plastic and the outer housing part 4 of metal.
  • the cooling channel structure is then molded onto the outer housing part 4 on the inside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention concerne un boîtier pour une machine électrique, en particulier un moteur électrique, qui comprend une partie de boîtier interne (3) et une partie de boîtier externe (4) qui entoure la partie de boîtier interne (3), une chambre intermédiaire (5) formant un conduit de refroidissement entre les deux parties de boîtier (3, 4), une partie de boîtier étant disposée sur le côté qui fait face à la chambre intermédiaire (5) avec une structure de conduit de refroidissement qui est constituée de plastique, et une partie de boîtier étant constituée de métal et l'autre partie de boîtier étant constituée de plastique, le boîtier étant destiné à pouvoir être produit de manière particulièrement simple. À cet effet, la structure de conduit de refroidissement comprend des nervures (3) qui sont moulées sur la partie de boîtier (3, 4) constituée de métal, les nervures (3) formant des conduits de refroidissement qui sont ouverts vers la partie de boîtier (3, 4) constituée de métal sur la longueur de la chambre intermédiaire (5).
EP21709323.6A 2020-03-06 2021-03-03 Boîtier pour moteur électrique Pending EP4115504A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020106099.8A DE102020106099A1 (de) 2020-03-06 2020-03-06 Gehäuse für einen Elektromotor
PCT/EP2021/055275 WO2021175896A1 (fr) 2020-03-06 2021-03-03 Boîtier pour moteur électrique

Publications (1)

Publication Number Publication Date
EP4115504A1 true EP4115504A1 (fr) 2023-01-11

Family

ID=74859425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21709323.6A Pending EP4115504A1 (fr) 2020-03-06 2021-03-03 Boîtier pour moteur électrique

Country Status (3)

Country Link
EP (1) EP4115504A1 (fr)
DE (1) DE102020106099A1 (fr)
WO (1) WO2021175896A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024067979A1 (fr) * 2022-09-29 2024-04-04 Gkn Automotive Limited Ensemble boîtier pour une machine électrique destinée à entraîner un véhicule automobile, et machine électrique équipée d'un tel ensemble boîtier
DE102022213152A1 (de) 2022-12-06 2024-02-15 Vitesco Technologies Germany Gmbh Elektromotor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10154156A1 (de) * 2001-11-03 2003-05-15 Bosch Gmbh Robert Luftgekühlte elektrische Maschine
DE102005052363A1 (de) 2005-11-02 2007-05-03 Siemens Ag Elektromotor
DE202011004465U1 (de) 2011-03-16 2011-06-01 Asia Vital Components Co., Ltd., Taipei Wasserkühlung für Motor
DE102014226303A1 (de) 2014-12-17 2016-06-23 Volkswagen Aktiengesellschaft Gehäuse, elektrische Maschine mit einem derartigen Gehäuse sowie Fahrzeug
DE102016118815A1 (de) 2016-10-05 2018-04-05 Minebea Co., Ltd. Kühlanordnung für eine elektrische Maschine
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

Also Published As

Publication number Publication date
DE102020106099A1 (de) 2021-09-09
WO2021175896A1 (fr) 2021-09-10

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