EP2885857A2 - Groupe et carter avec chemise de refroidissement - Google Patents

Groupe et carter avec chemise de refroidissement

Info

Publication number
EP2885857A2
EP2885857A2 EP13745832.9A EP13745832A EP2885857A2 EP 2885857 A2 EP2885857 A2 EP 2885857A2 EP 13745832 A EP13745832 A EP 13745832A EP 2885857 A2 EP2885857 A2 EP 2885857A2
Authority
EP
European Patent Office
Prior art keywords
housing
coolant
cooling jacket
shell
lid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP13745832.9A
Other languages
German (de)
English (en)
Inventor
Henning Wöhl-Bruhn
Gustavo Alonso
Mirko PUNDT
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP2885857A2 publication Critical patent/EP2885857A2/fr
Ceased 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

Definitions

  • the invention relates to an assembly that can be designed as an electric motor, and a housing with a cooling jacket for the unit.
  • the unit In a unit with jacket cooling, such as in an electric motor, the unit is enclosed in a two-part housing.
  • the space formed between the housing parts, the so-called cooling jacket, serves to receive and guide a coolant.
  • Cooling fins from each other separated cooling channels meandering and / or serpentine flows through.
  • a similar device is shown in US Pat. No. 7,800,259 B2.
  • the document WO 2006/106086 A1 shows an electric machine with a cylindrical
  • Cooling jacket which flows in the axial direction meandering. Further devices of this type are shown in US Pat. Nos. 6,727,611, B2, EP 1 953 897 A2 and US Pat. No. 7,675,209 B2.
  • the publication WO 2010/049204 A2 shows a cooling jacket with helically wound over the cylindrical circumference and the axial extension of the cooling jacket
  • Coolant channels and an annular manifold or distributor The connections to a coolant line are oriented tangentially to the cooling jacket.
  • the document US 7 591 147 B2 also shows helical cooling channels, but in this device collector and distributor and the connections are axially oriented.
  • Document DE 10 2005 058 031 A1 discloses a single coolant channel, which is arranged helically around a central longitudinal axis between the engine casing and outer casing and in which the inlet and the outlet are oriented radially to the central longitudinal axis.
  • a disadvantage of these cooling jackets is that the surfaces, in particular the cooling channels, require mechanical post-processing. This post-processing can be very expensive. In cast parts, the casting skin is damaged by a post-processing. The resulting smooth surface can affect the tightness and makes it difficult to develop a turbulent flow. A mechanically reworked smooth surface has inferior heat transfer properties as compared to a rougher cast skin. In addition, complex geometries can only be cast using sand cores. When using sand cores, however, the manufacturing process is more expensive. In particular, a comprehensive calculation of the core shooting simulation, the shaking of the sand, the residual sand problem, the production of molds for the production of sand cores and the positioning of the sand core in the mold are some examples.
  • the invention has the object to perform a housing with a cooling jacket of the type mentioned in such a way that at low
  • a housing in which the shell inner surface and / or the shell outer surface has a plurality of coaxially circumferential depressions and / or webs. Due to the formation of coaxial circumferential valleys and / or webs, it is possible to make the inner part, at least the cylindrical pipe section, rotationally symmetrical and at the same time to distribute the coolant uniformly over the circumference.
  • the valleys and footbridges have the Function to direct the coolant, they further enlarge the surface, over the one
  • the depressions and / or webs are preferably arranged on the shell inner surface.
  • the production according to the invention of a rotationally symmetrical body with a simple geometry makes it possible to resort to cost-effective casting methods and to dispense with reworking as far as possible. This reduces the production cost.
  • the preparation in a conventional casting process is compared to the prior art with high efficiency of heat transfer possible because in the inventive design, the casting skin can remain unprocessed, which favors the formation of a turbulent flow and whereby the active surface through the wave contour of the sinks and / or webs is enlarged.
  • no sand cores are needed - the cost of calculations, tools and rework, such as shaking is significantly reduced.
  • each individual depression and / or each individual bridge spans a plane which is oriented parallel to the other planes of the further depressions and / or webs.
  • these planes are oriented perpendicular to the central longitudinal axis of the pipe section.
  • the inner part For receiving and fastening, for example, a stator of an internal rotor electric machine with the housing, the inner part comprises a bearing plate.
  • the end shield has in one
  • the bearing plate in particular in one piece, with the
  • the end shield also has at least one connector receptacle, but plug receptacles can also be realized via a separate cover, not shown, of the end shield, which axially closes the end shield.
  • the end shield is not designed to be rotationally symmetric in the rule.
  • depressions and / or webs form channels for the coolant together with the jacket inner surface and the jacket outer surface.
  • Shell inner surface connected webs sealingly on the outer shell surface
  • the shell inner surface and the outer shell surface webs which lie sealingly against the outer surface of the shell for the formation of flow-separated channels.
  • the surfaces directly adjacent to the coolant remain unprocessed.
  • the identical inner part for example, consisting of pipe section and end shield, with adapted angular position of the connector receptacle in the respective
  • the depressions and / or webs preferably enclose the shell inner surface annularly.
  • the outer part of the housing has at least one cavity facing recess.
  • This recess serves as a collecting space for the coolant flowing through the cooling jacket.
  • the outer part has a plurality of such recesses.
  • the collector region of the cooling jacket is integrated in the outer part of the housing and thus does not affect the shape of the cooling structure, in particular the shape of the inner part, which the possible applications in terms of
  • Modular system improved. It is possible to produce the identical outer part in large numbers for different Verbausituationen. Almost any number of different installation situations can be realized with the housing according to the invention.
  • the modular concept achieved in this way enables a rotation of the stator and housing or inner part and outer part of the housing. An interruption of the cavity to redirect the coolant, by the arrangement of a separating blade in the
  • the separating blade is in particular integrally connected to the housing.
  • the outer part has an opening in the region of the recess.
  • the connection with lines of the coolant has the
  • Housing exterior one or more line connections are formed according to an embodiment in one piece with the outer part.
  • a further embodiment is conceivable in which only inlets and outflows of the coolant via collector, for example without a separating blade, are made possible.
  • a development of the invention is characterized in that a receptacle for a cover of the opening is provided at the edge of the recess.
  • the lid serves the flow-tight closure of the opening.
  • the arranged on the housing outer surface cover may also be carriers of facilities.
  • a lid may include an inlet port and / or a drain port for the coolant.
  • the separating blade can be arranged on the cover, so that it is possible to use one or more of any of the openings for the supply and discharge of the coolant, according to the invention independently of the
  • the separating blade is arranged on a side of the lid assigned to the intermediate space.
  • the lid can also be cast in one piece with at least one inlet connection and / or at least one
  • the drain and inlet of coolant may be through a single or multiple
  • Breakthroughs take place. It is possible that an opening for the inlet and another opening is used for the process or multiple openings are used in each case for the inlet and at the same time for the flow of the coolant.
  • the orientation of the aperture is preferably radial to the central longitudinal axis of the pipe section
  • the opening and / or at least the receptacle for the lid and the lid have an elongated, in particular rectangular shape with two long sides and two
  • Narrow sides To avoid voltage peaks, the corners are rounded or the narrow sides curved, for example, designed as a semicircle. It has proved favorable that both long sides are oriented parallel to the central longitudinal axis of the pipe section.
  • a development of the invention relates to a cover in which a device is a module to be cooled.
  • This module such as a power electronics, is arranged on a side of the housing outside of the lid associated side and connected to the lid.
  • coolant it is possible for coolant to flow through the assembly for its cooling or heating, which coolant flows through the cooling jacket of the housing before and / or after and / or in parallel.
  • the cover with a module to be tempered coolant is removed through an opening, guided through the component and returned through the same opening back into the cavity.
  • fresh coolant via an inlet through a
  • the invention also includes the converse case that the coolant flows through inlet, assembly, cavity and then through the drain.
  • the lid can also accommodate a module that is not flowed through with a coolant, but in which the cooling takes place via the heat conduction through the lid.
  • this consists of a core of a solid, rigid material, such as the material of the outer part or the lid.
  • This core is preferably made in one piece with the outer part or the lid.
  • a soft, elastic material is attached in the form of at least one lip.
  • the lip is located on the inner surface of the jacket.
  • the lip leading edge has a structure.
  • the structured design of the lip leading edge serves to improve the tightness of the seat of the lip shell inner surface or to achieve a desired leak rate.
  • the structure is designed inversely to the shell inner surface.
  • a plurality of lips are arranged to minimize a leak rate.
  • the lips are through at the core Attached fasteners, such as adhesive, vulcanization, molding or a positive connection.
  • the separating blade in particular the lip, is adapted to the structure of the coolant channel and the side surfaces of the opening with an exact fit or slightly oversized for optimum sealing on the structure.
  • the design of the separating blade allows the waiver of a separate sealant between Zulaufraum and drainage chamber and the multiple assembly and disassembly of the functional device without having to replace a sealant.
  • On the design of the lip is alternatively a leak rate of coolant directly between the inlet and outlet of the cavity adjustable.
  • the invention comprises a lid, which on the outer part, the opening
  • two connections for coolant hoses are arranged on the cover, on the one hand, and a separating blade orthogonal to the cover, on the other hand.
  • a perpendicular to the cover oriented separating blade allows both a uniform volume separation in the opening and a variable design of the drain and Zulaufippo.
  • the lid is so easy to assemble.
  • the separating blade engages in the shape of corresponding to the cooling channel structure shaped lips in the cooling channel structure and thus separates the inlet of the coolant from the expiry of the
  • Coolant The integrated in the cover pipe connections allow a direct supply of coolant lines, without further components are required.
  • Fig. 1 is a schematic representation of an inner part of a housing for a
  • Figure 2 is a sectional schematic representation of the inner part with a stator and a rotor of the electric motor.
  • Fig. 3 is a schematic representation of an outer part of the housing for an electric motor
  • Fig. 4 is a sectional schematic representation of the housing with inner part
  • Fig. 5 is a sectional schematic representation of the housing with a first
  • Fig. 6 is a sectional schematic representation of the housing with a second
  • FIG. 8 shows a perspective, schematic illustration of a first embodiment of a cover with a separating blade, inlet and outlet;
  • FIG. 9 shows a further perspective, schematic illustration of that shown in FIG.
  • FIG. 10 is a view of the inside of the lid of the lid shown in FIG. 8; FIG.
  • Fig. 1 1 is a view of the lid outside of the lid shown in Figure 8;
  • Fig. 12 is a sectional schematic illustration of the lid shown in Fig. 8;
  • Fig. 13 is a perspective, schematic representation of a second embodiment of a lid with an assembly
  • Fig. 14 is a view of the inside of the lid shown in Fig. 13;
  • FIG. 15 is an exploded view of the lid shown in FIG.
  • FIGS. 1 to 4 show a housing 1 for an electric motor, which consists of an inner part 2 shown in FIGS. 1 and 2 and an outer part 3 shown in FIG.
  • FIG. 4 shows the housing 1 with inner part 2 and outer part 3.
  • the housing 1 has a cooling jacket in which a coolant circulates and thus absorbs heat from the electric motor and dissipates it. According to the invention, such a housing can also be used for other heat sources to be cooled or a cooler.
  • the housing 1 according to the invention will be described on the basis of a use for an electric motor.
  • the electric motor comprises a stator 4 and a rotor 5.
  • the rotor 5 is connected to an axle 6, which is rotatably held by a bearing 7 in the housing 1.
  • the housing 1 consists of an inner part 2 and an outer part 3, which guide the cooling medium.
  • Figures 1, 2 and 4 show the inner part 2, which has a bearing plate 8 and a
  • Pipe section 9 with a pipe inner surface 10 and a shell inner surface 1 1 includes.
  • the bearing plate 8 is assigned at least one bearing 7 and at least one connector receptacle 12.
  • the embodiment variant of the inner part 2 shown in FIG. 1 has an inner shell surface 1 1, which has a plurality of coaxially circumferential depressions 37 and webs 38.
  • the depressions 37 and / or webs 38 surround the shell inner surface 1 1 annular and form with the shell inner surface 1 1 and the shell outer surface shown among other things in Figures 3, 4 and 7 15 channels for the coolant.
  • the inner shell surface 1 1 is smooth, designed in particular without webs or depressions and forms with the outer shell surface 15 a single wide channel for the coolant.
  • the outer part 3 shown in Figures 3, 4 and 7 has a cylindrical cavity 13, which serves to receive the tube section 9.
  • the outer part 3 has a
  • the outer part 3 further has on the outer shell surface 15 a recess 16. In the region of the recess 16, the outer part 3 has an opening 17. At the edge of the opening 17, a receptacle 18 for the cover 23 shown in FIGS. 8 to 12 or a cover 31 shown in FIGS. 13 to 15 in a second embodiment is provided on the housing outer surface 14.
  • Figures 5, 6 and 7 show three different embodiments of the outer part 3.
  • the inner part 2 is arranged concentrically in the outer part 3, wherein between the outer shell surface 1 1 and the outer shell surface 15, a gap 19 is formed is.
  • the intermediate space 19 serves to receive a coolant and is also called cooling jacket.
  • the outer part 3 and the inner part 2 are connected immovably relative to each other.
  • the outer part 3 has two recesses 16, each with an opening 17 of the outer part 3.
  • the recesses 16 on the outer shell surface 15 have a larger tangential cross-section than the openings 17 on the housing outer surface 14th.
  • Openings 17 terminate at the housing outer surface 14 in an inlet connection 20 and a drain connection 21 for the coolant.
  • the inlet connection 20 and the outlet connection 21 are cast in one piece with the outer part 3.
  • the inner part 2 facing recess 16 serves as a collecting space for the coolant flowing in the cooling jacket.
  • Flow direction 22 of the coolant is indicated by arrows.
  • the coolant flows through the cooling jacket in this embodiment in two separate streams by half the circumference.
  • the outer part 3 has three recesses 16, each with an opening 17 of the outer part 3.
  • a receptacle 18 for one shown in Figures 7 to 14 Cover 23 is provided. Which of the openings 17 serves, for example, as an inlet and / or outlet, decides the equipment of the attached to the respective receptacle 18 lid 23rd
  • Figure 7 shows a third embodiment of the outer part 3.
  • the outer part 3 has a recess 16 with a receptacle 18 for the lid 23.
  • the lid 23 shown here has assigned to one of the housing outer surface 14
  • Lid outer side 26 an inlet port 20 and a drain port 21. Inside the inlet port 20 and drain port 21, the lid 23 has a passage 31 shown in Figures 10 and 1 1. On one of the outer shell surface 15 assigned
  • the cover 23 has a separating blade 24.
  • the separating blade 24 is disposed between the inlet port 20 and the drain port 21, so that the coolant flows through the cooling jacket in this embodiment in a current around the full extent. If the inner part 2 is arranged in the cavity 13 of the outer part 3, the separating blade 24 is fluid-tight against the inner shell surface 11.
  • Figures 8 to 12 show a first embodiment of a lid 23.
  • the lid 23 has, as described in Figure 7, an inlet port 20, a drain port 21 and a separating blade 24.
  • Figures 8 and 9 show a perspective view of the lid
  • Figure 10 is a view of the lid inside 25
  • Figure 1 1 is a view of the lid outside 26.
  • the separating blade 24 consists of a core 27 of a solid, rigid material. In the embodiment shown, the core 27 is made in one piece with the lid 23. At the core 27 two lips 28 are arranged. The lips 28 are made of a softer,
  • the lips 28 are dimensioned with an oversize, so that they rest against the inner surface of the casing 1 1 flow-tight.
  • the lip leading edges 29 are structured with a profile which is designed inversely to the geometry of the shell inner surface 1 1.
  • the lips 28 are attached to the core 27 by vulcanization or molding.
  • the lid 23 further has fastening means 30, which are designed to match the receptacles 18 shown in FIGS. 3, 6 and 7. This makes it possible to arrange the cover 23 on any receptacle 18.
  • FIGS. 10 and 11 show the passageways 31 provided in the interior of inlet connection 20 and outlet connection 21.
  • a cover 23 of this first embodiment can be used to supply and discharge coolant to the cooling jacket.
  • FIG. 12 shows the cover 23 arranged on the housing 1, wherein a structuring of the lip leading edge 29 is shown inversely to the inner surface of the jacket 11.
  • FIGS. 13, 14 and 15 show a second embodiment of a lid 32.
  • On the lid outer side 26 is an assembly 33, in particular a power electronics for the electric motor attached.
  • the elements of the assembly 33 are arranged on a carrier plate 35.
  • the cover 32 has fastening means 30 for connection to the receptacles 18 shown in FIGS. 3, 6 and 7 and connecting means 34 for fastening the assembly 33 or the support plate 35 to the cover 32
  • the support plate 35 has on a lid 32 side facing an annular
  • Protrusion 36 sealingly abuts against the lid outer surface 26, so that an outwardly closed space is bounded by the protrusion 36, the carrier plate 35 and the lid outer surface 26.
  • the lid 32 has two passages 31. The passages 31 open on the lid outer side 26 in the room.
  • a separating blade 24, as described in FIGS. 7 to 12, is arranged between the passages 31. By the separating blade 24 coolant is passed from the cooling jacket through a passage 31 into the room. There can be a heat transfer between the
  • Coolant and the support plate 35 and thus the assembly 33 occur before the coolant through the other passage 31 and led by the separating blade 24 back into the
  • Pipe section 34 Connecting means Pipe inner surface 35 Carrier plate Mantle inner surface 36 Projection

Landscapes

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

Abstract

L'invention concerne un carter (1) pourvu d'une chemise de refroidissement, destiné à un groupe, en particulier à un moteur électrique, comprenant une partie intérieure avec une section tubulaire et une partie extérieure (3) destinée à recevoir la section tubulaire, la section tubulaire étant symétrique en rotation. L'invention concerne en outre un moteur électrique comportant un tel carter (1), un couvercle (23) étant fixé sur une ouverture (17) du carter (1) de manière étanche à l'écoulement entre la chemise de refroidissement et l'environnement. Au moins un dispositif, tel qu'un raccord d'alimentation (20) et/ou un raccord d'évacuation (21) et/ou une lame de séparation (24) et/ou un ensemble à refroidir, est disposé sur le couvercle (23).
EP13745832.9A 2012-08-16 2013-08-05 Groupe et carter avec chemise de refroidissement Ceased EP2885857A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012016208.1A DE102012016208A1 (de) 2012-08-16 2012-08-16 Aggregat und Gehäuse mit einem Kühlmantel
PCT/EP2013/066407 WO2014026874A2 (fr) 2012-08-16 2013-08-05 Groupe et carter avec chemise de refroidissement

Publications (1)

Publication Number Publication Date
EP2885857A2 true EP2885857A2 (fr) 2015-06-24

Family

ID=48948409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13745832.9A Ceased EP2885857A2 (fr) 2012-08-16 2013-08-05 Groupe et carter avec chemise de refroidissement

Country Status (4)

Country Link
EP (1) EP2885857A2 (fr)
CN (1) CN104662781B (fr)
DE (1) DE102012016208A1 (fr)
WO (1) WO2014026874A2 (fr)

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DE102015213479B4 (de) 2014-12-22 2021-02-04 Volkswagen Aktiengesellschaft Verfahren zum Herstellen einer Kühleinheit für eine elektrische Maschine und Kühleinheit für eine elektrische Maschine gemäß dem Verfahren
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DE102016215187A1 (de) 2016-08-16 2018-02-22 Volkswagen Aktiengesellschaft Gehäuseanordnung für eine elektrische Maschine mit geklemmtem Stator
DE102016218154A1 (de) * 2016-09-21 2018-03-22 Zf Friedrichshafen Ag Elektrische Antriebseinheit mit Kühlhülse
DE102016222051A1 (de) 2016-11-10 2018-05-17 Volkswagen Aktiengesellschaft Gehäuseanordnung für eine elektrische Maschine mit Kühlmantel
DE102016223968A1 (de) 2016-12-01 2018-06-07 Volkswagen Aktiengesellschaft Zusammengebaute Gehäuseanordnung für eine elektrische Maschine und Herstellverfahren
CN107819377A (zh) * 2017-12-01 2018-03-20 丹阳荣嘉精密机械有限公司 一种集成式电机壳体
CN108448800B (zh) * 2018-05-09 2023-09-26 重庆零创屹立科技有限公司 一种多功能植保无人机自动冷却电机底座
EP3624312B1 (fr) * 2018-09-12 2021-08-11 Siemens Mobility GmbH Procédé de fabrication d'une enveloppe de refroidissement de fluide
EP3928417A1 (fr) * 2019-02-20 2021-12-29 Albert Handtmann Metallgusswerk GmbH & Co. KG Carter de machine électrique segmenté en plusieurs parties
DE102020202749A1 (de) 2020-03-04 2021-09-09 Robert Bosch Gesellschaft mit beschränkter Haftung Systemgehäuse für ein Antriebssystem
DE102020211432A1 (de) * 2020-09-11 2022-03-17 Robert Bosch Gesellschaft mit beschränkter Haftung Elektrische Antriebseinheit und ein Fahrzeug mit einer entsprechenden elektrischen Antriebseinheit
DE102022203082A1 (de) 2022-03-29 2023-10-05 Mahle International Gmbh Komponententräger, Ventil für einen solchen, Wärmeübertragervorrichtung für einen Elektroantrieb sowie Elektroantrieb
DE102022129216A1 (de) 2022-11-04 2024-05-08 Audi Aktiengesellschaft Elektromaschine mit zugeordnetem Pulswechselrichter

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Also Published As

Publication number Publication date
CN104662781B (zh) 2020-03-20
DE102012016208A1 (de) 2014-02-20
WO2014026874A3 (fr) 2015-01-08
WO2014026874A2 (fr) 2014-02-20
CN104662781A (zh) 2015-05-27

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