EP2837084A2 - Gehäuse mit innen- und aussenteil und eine elektrische maschine mit einem solchen gehäuse - Google Patents
Gehäuse mit innen- und aussenteil und eine elektrische maschine mit einem solchen gehäuseInfo
- Publication number
- EP2837084A2 EP2837084A2 EP13717743.2A EP13717743A EP2837084A2 EP 2837084 A2 EP2837084 A2 EP 2837084A2 EP 13717743 A EP13717743 A EP 13717743A EP 2837084 A2 EP2837084 A2 EP 2837084A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- inner part
- outer part
- housing inner
- bearing plate
- 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
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
-
- 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
-
- 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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- 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
- 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
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
Definitions
- the present invention relates to a housing for a rotating electrical machine, in particular for an electric motor or a generator. Further, a method for manufacturing a rotary electric machine with the above-mentioned housing will be described.
- the housing has several functions: it is intended to support the forces or the torque arising during operation, it can form a coolant jacket for cooling the engine and it can offer a possibility for fastening other engine compartment aggregates.
- motor housings are made of metal.
- the object of the invention is to provide a housing for a rotating electrical machine, which has the said functions but it is also very easy. Furthermore, a method for producing a rotating electric machine with such a housing is to be specified.
- a housing for a rotary electric machine having a housing inner part enclosing a stator and a rotor of the rotary electric machine, wherein the housing inner part consists essentially of a metal or a Metal alloy is formed.
- substantially formed of a metal or a metal alloy means that the housing inner part largely or predominantly contains a metal or a metal alloy, in other words, the base material of the housing inner part is a metal or a metal alloy
- the housing inner part it is also possible for the housing inner part to contain a small proportion of non-metallic material, for example by contamination in the production process is formed essentially of a plastic "means that the housing outer part contains mostly or predominantly a plastic.
- the base material of the housing outer part is a plastic. It may thus also possible that the housing outer part contains a small amount of metallic material z. As by contamination in the manufacturing process or as metallic components of the housing outer part such as reinforcing elements, EMC films or coolant connections.
- connection point between the housing outer part and the housing inner part, on which the Housing outer part is mechanically connected to the housing inner part.
- the at least one connection point has a first flange and a second flange, wherein the first flange is integrally formed on the housing outer part and preferably with the housing outer part and the second flange on the housing inner part and preferably with the housing inner part is integrally formed. Via the connection point, forces which have been transferred from the rotor to the housing inner part are transmitted to the housing outer part.
- housing the entire housing, which is divided into the housing inner part and the housing outer part.
- Such a housing has the advantage that on the one hand it is sufficiently stable to support the torque generated during operation, on the other hand is also particularly easy.
- the housing outer part made of plastic can take on various tasks, which usually meets a completely made of metal housing.
- the housing may provide a jacket for cooling the machine. It is simple and easy to manufacture. Since the housing is partially made of plastic, the overall weight of the rotating electrical machine is reduced. In addition, the housing outer part made of plastic noise dampened. In addition, an EMC protection is ensured because the housing inner part is formed of metal.
- connection point between the housing outer part and the housing inner part of the flanges formed on these housing parts has the advantage that it represents a non-destructive releasable mechanical connection, which on the one hand, the positioning of the two On the other hand facilitates housing parts and on the other hand, the resulting upon rotation of the rotor inertia, which is transmitted from the rotor to the housing inner part, easily transfers from the housing inner part on the housing outer part and on to a motor mount, without affecting the housing outer part and rotate the housing inner part to each other.
- the flanges are preferably each formed integrally with the housing outer part or the housing inner part and in the form of a respective housing part circumferentially shaped disk-shaped connecting part.
- the housing further comprises a metal or metal alloy formed bearing plate, which is mechanically connected via the at least one connection point with the housing outer part and the housing inner part.
- the at least one connection point comprises a third, integrally formed on the bearing plate and preferably with the bearing plate flange.
- first, the second and the third flange for transmitting power from the housing inner part to the housing outer part are arranged overlapping one another and connected to one another in a form-fitting or force-locking manner.
- the flanges form a so-called “sandwich structure", whereby the three force-transmitting flanges are brought together using, for example, flange bolts, which distributes the torque to the flange bolts and then transfers them to the engine mount possible to caulk or rivet the flanges together.
- flange bolts which distributes the torque to the flange bolts and then transfers them to the engine mount possible to caulk or rivet the flanges together.
- the housing inner part is formed substantially cylindrical with a jacket and a bottom.
- the housing outer part is designed as a cylinder jacket, which surrounds the casing of the housing inner part.
- the housing inner part has a first cylindrical wall and a bottom and the housing outer part has a second cylindrical wall, wherein the second cylindrical wall of the housing outer part surrounds the first cylindrical wall of the housing inner part.
- At least one cavity for receiving a cooling liquid is formed between the housing outer part and the housing inner part.
- the cooling jacket between the housing outer part and the housing inner part is formed.
- the cavity between the first cylindrical wall of the housing inner part and the second cylindrical wall of the housing outer part is formed.
- the axial position of the flange can be selected depending on space. In this case, the position can be chosen so that the distance between the flange and fasteners of the housing is minimized to keep the leverage as low as possible. For this it would be optimal to place the flange at a height with the fasteners of the housing.
- the housing inner part may in a further preferred embodiment have a metal alloy, the iron, chromium and nickel, wherein chromium is contained in a weight percent of 18 to 19 and nickel in a weight percent of 12 to 13.
- the metal alloy may have an alloy composition Fe radical Cr a Ni b Mn c C d Si e P f S g N h wherein a, b, c, d, e, f, g and h are given by weight and 18 -S a -S 19; 12 ⁇ b ⁇ 13; 0 ⁇ c ⁇ 1.4; 0 ⁇ d ⁇ 0.055; 0 ⁇ e ⁇ 0.6; 0 ⁇ f ⁇ 0.04; 0 ⁇ g ⁇ 0.008 and 0 ⁇ h ⁇ 0.1.
- this material Compared with known stainless steels, for example steels 1.4301 and 1.4303, this material has a particularly high proportion of chromium and nickel. It has been shown that workpieces made of this steel remain unmagnetizable even after forming, punching or cutting. Eddy current losses in the housing are thus reduced.
- a simple, inexpensive steel may optionally be used with a stainless surface.
- Aluminum or sintered materials can also be used for the inner part of the housing.
- the end shield may preferably comprise a metal alloy containing iron, chromium and nickel, wherein chromium is contained in a weight percent of 18 to 19 and nickel in a weight percent of 12 to 13.
- the metal alloy may be an alloy composition
- the housing between the housing outer part and the housing inner part at least one O-ring for watertight sealing of the cavity.
- the housing outer part has additional reinforcing elements made of metal.
- Such reinforcing elements may be metallic insert bushings with which the housing bores for the engine mounting or flange bolts are reinforced. It can also be designed connections for a water cooling of metal.
- EMC films can be provided, which are injected or inserted into the housing outer part. Such EMC films may also be provided in a lid made of plastic housing, for example, if there is provided a rotor position sensor and makes EMC protection necessary.
- the housing in the region of the connection point and between the housing outer part, the housing inner part and / or the bearing plate air gaps to compensate for manufacturing tolerances between the housing outer part, the housing inner part or the bearing plate.
- at least one O-ring is preferably arranged, which compensates the manufacturing tolerances between the housing outer part, the housing inner part or the bearing plate and the housing outer part, the housing Inner part or the bearing plate also centered to each other.
- the bearing plate is centered with the housing outer part and the housing inner part by the O-ring and tolerances between the housing outer part, the housing inner part or the bearing plate compensated by the flexible O-ring.
- a rotary electric machine is provided with the described housing.
- the rotating electrical machine can in particular be formed as an internal rotor and designed for speeds of 10,000 revolutions per minute and more.
- Such rotating electrical machines are suitable for use in a motor vehicle. They can be used both as drive in the drive fully integrated drive motors, for example as wheel or axle motors, as well as, for example, as a starter generators. According to one aspect of the invention, therefore, there is provided a motor vehicle having the described rotary electric machine.
- the motor vehicle can be designed as an electric or hybrid vehicle.
- a method for producing a rotary electric machine is described with the described housing.
- the stator with winding is cold pressed into the housing.
- an assembly by means such as gluing or heat shrinking is conceivable.
- the rotor is pressed together with a bearing in the housing inner part and the bearing rolled up for mounting clearance. This creates the fixed camp.
- the housing outer part is produced in an injection molding process. In this case, metallic components of the housing outer part such as reinforcing elements, EMC films or coolant connections can be used and injection-molded during injection molding. However, they can also be used later.
- the second material component may be a metallic insert or a second, "back-injected" plastic.
- Figure 1 shows schematically a section through an electric motor according to a first embodiment of the invention
- Figure 2 shows schematically a perspective view of
- FIG. 3 shows schematically a section through an electric motor according to a second embodiment of the invention
- FIG. 3a shows a detail from FIG. 3;
- Figure 4 shows schematically a section through an electric motor according to a third embodiment of the invention;
- FIG. 4a shows a detail from FIG. 4
- FIG. 5 schematically shows a section through an electric motor according to a fourth embodiment of the invention.
- FIG. 5 a shows a detail from FIG. 5.
- the electric motor 1 schematically shows a section through an electric motor 1 with a rotor 2 formed as a laminated core and a stator 3 surrounding the rotor 2.
- the electric motor 1 is designed as an internal rotor motor in this embodiment.
- the rotor 2 has a laminated core which is non-rotatably connected to a rotor shaft 4.
- the rotor shaft 4 is rotatably supported in a housing 7 and on a bearing plate 13 by means of a fixed bearing 5 and a floating bearing 6.
- the fixed bearing 5 and the floating bearing 6 are formed in this embodiment as a ball bearing.
- the floating bearing 6 has a positioning disk 29, which takes the game from the movable bearing 6.
- the rotor shaft 4 carries at one end a pulley 8 of a belt drive.
- the stator 3 also has windings, of which only the winding heads 9 are indicated.
- the stator 3 is fixedly connected to the housing 7 and concentrically surrounds the rotor 2 with the rotor shaft 4.
- the housing 7 has a metallic housing inner part 10.
- the housing inner part 10 has a material which essentially has the alloy composition Fe radical Cr a Ni b Mn c C d Si e P f S g N h , in which a, b, c, d, e, f g and h are given in weight percent and 18 -S a -S 19; 12 ⁇ b ⁇ 13; 0 ⁇ c ⁇ 1, 4; 0 ⁇ d ⁇ 0, 055; 0 ⁇ e ⁇ 0, 6; 0 ⁇ f ⁇ 0, 04; 0 ⁇ g ⁇ 0.008 and 0 ⁇ h ⁇ 0, 1.
- the housing inner part 10 is divided into a bottom 11 and a jacket 12.
- the bottom 11 opposite a likewise metallic bearing plate 13 is provided.
- the jacket 12 is surrounded by a housing outer part 14 made of plastic.
- a lid 15 made of a plastic or another
- a cavity 16 is formed, which can be flowed through by a coolant, for example glycol.
- connection point 17 has a first flange 31, a second flange 32, a third flange 33 and a fourth flange 34.
- the first flange 31 as an outer housing part 14 circumferential annular disc with the housing outer part 14 is integrally formed.
- the second flange 32 is formed integrally with the housing inner part 10 as an annular disk surrounding the housing inner part 10.
- Analog is the third Flange 33 as a bearing plate 13 circumferential annular disc formed integrally with the housing outer part 14.
- the fourth flange 34 is integrally formed as a lid 15 circumferential annular disc with the lid 15.
- the flange bolts 18 hold the four flanges 31, 32, 33 and 34 and thus the housing outer part 14, the housing inner part 10, the bearing plate 13 and the cover 15 together. But they also serve to transfer torque from the rotor 2 via the flanges 31, 32, 33 and 34 on the housing outer part 14 and then on in Fig. 2 illustrated fasteners 20 of the housing. 7
- the connecting parts 17 or the four flanges 31, 32, 33 and 34 are slightly offset from the loose-end of the electric motor 1 in its center and thus lie in the vicinity of the fastening elements 20 of the housing shown in FIG 7.
- no rotor position sensor is shown. However, such can be provided in the region of the floating bearing side, as shown for the other embodiments in Figures 3 to 5.
- two O-rings 21 are provided between the housing outer part 14 and the housing inner part 10 as a particularly simple and cost-effective type of seal. They seal the cavities 16 formed between the housing inner part 10 and the housing outer part 14. In this case, the housing outer part 14 is made
- FIG. 1 shows a perspective view of the housing 7 of the electric motor 1.
- the fasteners 20 are shown, to which the electric motor 1 can be mounted in the engine compartment.
- the fasteners 20 are partially close to the joint 17, so that in the transmission of forces, a lever is largely avoided.
- FIG. 3 shows the electric motor 1 according to a second embodiment of the invention.
- a rotor position sensor 23 is shown, which is mounted on a sensor receptacle 24.
- the sensor receptacle 24 is connected to the lid 15.
- the rotor position sensor 23 has terminals 25 to a vehicle electronics, not shown.
- the rotor position sensor 23 is opposite a mounted on a receptacle 26 encoder wheel 27, which is rotatably connected to the rotor shaft 4 and rotates during operation therewith.
- the lid 15 is made of metal, for example a sintered metal, formed, for example, of the same material as the housing inner part 10 or the end plate 13. He therefore acts as EMC protection.
- the receptacle is formed from a non-magnetizable material and comprises a material which is essentially the alloy composition
- magnetizable steels or other materials such as plastics or sintered materials can be used.
- FIG. 3a shows in detail the connection point 17 of the electric motor 1 according to FIG. 3, comprising the first, the second and the third flange 31, 32 and 33.
- two O-rings 21, 21a are particularly clearly visible.
- the O-ring 21, the housing inner part 10 is circumferentially disposed between the housing outer part 14 and the housing inner part 10 and has the task, the cavity 16, which serves as a cooling passage for passing a cooling liquid, watertight seal.
- the O-ring 21a is the bearing plate 13 circumferentially disposed between the bearing plate 13 and the housing inner part 10 and has the task to compensate for manufacturing tolerances between the housing inner part 10 and the bearing plate 13 and seal interior of the electric motor 1, for example, against splashing.
- a small air gap 28 is provided between the bearing plate 13 and the housing inner part 10. Through this air gap 28, the bearing plate 13 does not touch the housing inner part 10.
- the bearing plate 13 is centered in the housing 7 by the O-ring 21a with respect to the housing inner part 10.
- the rotor 2 is not completely coaxial with the housing 7 and the bearing plate 13.
- these running tolerances are compensated by the flexible O-ring 21a.
- a further O-ring is additionally installed to a
- FIG. 4 shows an electric motor 1 according to a third embodiment.
- the third embodiment differs from that shown in FIG. 3 in that the housing outer part 14 has no cover 15.
- the rotor position sensor 23 is inserted from the outside directly into the end plate 13.
- the receptacle 24 is connected to the bearing plate 13.
- FIG. 4a again shows a detail from the region of the flange 17 of the electric motor 1 according to FIG. 4.
- the O-rings 21, 21a are particularly clearly visible.
- FIGS. 3 and 4 show axial rotor position sensors 23.
- radial sensors can also be used, for example if the installation space requires it.
- FIG. 5 schematically shows a section through an electric motor 1 according to a fourth embodiment of the invention.
- FIG. 5a again shows a detail from the region of the flange 17 of the electric motor 1 according to FIG. 5.
- a second method for producing a rotating electric machine 1 with a housing 7 described above wherein the rotor 2 is pressed together with a bearing 5, 6 in the housing 7 and the bearing 5, 6 is rolled without clearance for attachment.
- a third method for manufacturing a rotary electric machine 1 with a housing 7 described above is disclosed, wherein the housing outer part 14 is manufactured in an injection molding process. During the injection molding process, metallic components and / or manufactured plastic components of the housing outer part 14 is inserted and molded with Kunststoffg screenmasse.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012205754A DE102012205754A1 (de) | 2012-04-10 | 2012-04-10 | Gehäuse für eine rotierende elektrische Maschine |
PCT/EP2013/057392 WO2013153064A2 (de) | 2012-04-10 | 2013-04-09 | Gehäuse für eine rotierende elektrische maschine und rotierende elektrische maschine mit einem gehäuse |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2837084A2 true EP2837084A2 (de) | 2015-02-18 |
Family
ID=48143267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13717743.2A Ceased EP2837084A2 (de) | 2012-04-10 | 2013-04-09 | Gehäuse mit innen- und aussenteil und eine elektrische maschine mit einem solchen gehäuse |
Country Status (5)
Country | Link |
---|---|
US (1) | US9768658B2 (de) |
EP (1) | EP2837084A2 (de) |
CN (1) | CN104247226A (de) |
DE (1) | DE102012205754A1 (de) |
WO (1) | WO2013153064A2 (de) |
Families Citing this family (53)
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DE102012205754A1 (de) | 2012-04-10 | 2013-10-10 | Continental Automotive Gmbh | Gehäuse für eine rotierende elektrische Maschine |
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DE102020212588A1 (de) * | 2020-10-06 | 2022-04-07 | Zf Friedrichshafen Ag | Getriebe für ein Kraftfahrzeug, sowie elektrischer Achsantrieb |
DE102021126459A1 (de) | 2021-10-13 | 2023-04-13 | Bayerische Motoren Werke Aktiengesellschaft | Gehäuse für einen elektrischen Antrieb eines Kraftfahrzeugs, Kraftfahrzeug sowie Verfahren |
DE102021129462A1 (de) | 2021-11-11 | 2023-05-11 | Torqeedo Gmbh | Unterwasserantriebseinheit |
TWI799190B (zh) * | 2022-03-15 | 2023-04-11 | 大井泵浦工業股份有限公司 | 馬達模組及具有馬達模組的水冷式泵浦 |
WO2024202079A1 (ja) * | 2023-03-31 | 2024-10-03 | ニデック株式会社 | 回転電機、および駆動装置 |
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DE19939013A1 (de) * | 1999-01-13 | 2000-07-27 | Mitsubishi Electric Corp | Bürstenloser Fahrzeug-Wechselstromgenerator |
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DE10141693A1 (de) | 2001-08-25 | 2003-03-06 | Bosch Gmbh Robert | Elektrische Maschine, insbesondere Generator für Kraftfahrzeuge |
FR2872643A1 (fr) | 2004-06-30 | 2006-01-06 | Valeo Equip Electr Moteur | Chemise de refroidissement pour une machine rotative et machine rotative comportant une telle chemise de refroidissement |
DE102005047445A1 (de) * | 2005-09-30 | 2007-04-05 | Robert Bosch Gmbh | Elektromotor mit geteiltem magnetischem Rückschlusselement |
DE102009031467B4 (de) | 2009-07-01 | 2023-03-09 | Sew-Eurodrive Gmbh & Co Kg | Elektromotor mit Gehäuse und Kühlanordnung und Verfahren zum Kühlen |
DE102010008584A1 (de) | 2010-02-19 | 2011-08-25 | Magna Powertrain Ag & Co Kg | Elektrische Antriebseinheit |
JP5274613B2 (ja) * | 2011-04-21 | 2013-08-28 | 三菱電機株式会社 | 外被冷却形回転電機およびそれに用いられるケーシング |
DE102012205754A1 (de) | 2012-04-10 | 2013-10-10 | Continental Automotive Gmbh | Gehäuse für eine rotierende elektrische Maschine |
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2012
- 2012-04-10 DE DE102012205754A patent/DE102012205754A1/de not_active Ceased
-
2013
- 2013-04-09 US US14/391,135 patent/US9768658B2/en active Active
- 2013-04-09 WO PCT/EP2013/057392 patent/WO2013153064A2/de active Application Filing
- 2013-04-09 EP EP13717743.2A patent/EP2837084A2/de not_active Ceased
- 2013-04-09 CN CN201380019426.5A patent/CN104247226A/zh active Pending
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DE19939013A1 (de) * | 1999-01-13 | 2000-07-27 | Mitsubishi Electric Corp | Bürstenloser Fahrzeug-Wechselstromgenerator |
Also Published As
Publication number | Publication date |
---|---|
US9768658B2 (en) | 2017-09-19 |
DE102012205754A1 (de) | 2013-10-10 |
US20150069862A1 (en) | 2015-03-12 |
WO2013153064A3 (de) | 2014-09-12 |
WO2013153064A2 (de) | 2013-10-17 |
CN104247226A (zh) | 2014-12-24 |
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