EP2633606A2 - Elektrische maschine mit geschlossenem, autarkem kühlmediumkreislauf - Google Patents

Elektrische maschine mit geschlossenem, autarkem kühlmediumkreislauf

Info

Publication number
EP2633606A2
EP2633606A2 EP11796688.7A EP11796688A EP2633606A2 EP 2633606 A2 EP2633606 A2 EP 2633606A2 EP 11796688 A EP11796688 A EP 11796688A EP 2633606 A2 EP2633606 A2 EP 2633606A2
Authority
EP
European Patent Office
Prior art keywords
rotor shaft
cooling medium
liquid cooling
heat exchanger
base body
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.)
Withdrawn
Application number
EP11796688.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Konrad Brandl
Vladimir Danov
Klaus Dennerlein
Bernd Gromoll
Jürgen Hofmann
Patryk PIOTROWSKI
Andreas SCHRÖTER
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2633606A2 publication Critical patent/EP2633606A2/de
Withdrawn legal-status Critical Current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
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • the present invention relates to an electrical machine
  • the electric machine has a main body and a rotor shaft
  • the base body comprises at least one stator, - wherein ⁇ are arranged in the base body cooling channels for a liquid cooling medium to,
  • the rotor shaft is mounted in the base body such that the rotor shaft is rotatable about a rotation axis.
  • Such electrical machines are well known. For example, reference is made to DE 91 12 631 Ul.
  • liquid cooling media - in particular water - a much more efficient cooling of electrical machines is possible than with gaseous cooling media - in particular air. In many cases, electric machines are therefore equipped with water cooling.
  • the object of the present invention is for For an electric machine of the type mentioned in the ⁇ make that an efficient cooling of the electric machine is effected in a simple manner.
  • the object is achieved by an electric machine with the features of claim 1.
  • Advantageous Ausgestaltun ⁇ conditions of the electric machine are the subject of dependent claims 2 to 6.
  • That the electrical machine has a heat exchanger in addition to the main body and the rotor shaft,
  • the rotor shaft is designed as a hollow shaft through which the liquid cooling medium flows
  • the heat exchanger serves to deliver heat contained in the liquid cooling medium to the surroundings of the electrical machine
  • the liquid cooling medium preferably flows through the conveying element from the heat exchanger to the rotor shaft, from there to the cooling channels and from there back to the heat exchanger.
  • the conveying element between the rotor shaft and the cooling channels in the closed circuit for the looped in liquid cooling medium.
  • the conveying element is designed as the rotor shaft radially outward ⁇ giving, the liquid cooling medium radially outwardly för ⁇ desndes paddle wheel,
  • the rotor shaft has at least one radial recess in a region surrounded by the conveyor housing
  • connection from the heat exchanger to the rotor shaft prefferably designed such that the liquid cooling medium is fed axially to the rotor shaft.
  • This embodiment is aerodynamically optimal.
  • connection from the heat exchanger to the rotor shaft is designed such that the liquid ⁇ ge cooling medium of the rotor shaft is supplied radially.
  • This embodiment may be required in practice if the rotating part of a transducer device for a position-dependent, speed-dependent or acceleration-dependent signal is arranged on the rotor shaft.
  • FIG. 2 shows schematically a part of the electric machine of FIG. 1 and FIG
  • FIG. 3 shows an alternative design of the one shown in FIG.
  • an electric machine has a base body
  • the main body 1 comprises at least one stand 2.
  • the main body 1 in addition to the stand
  • the electric machine may be formed as a housing-less electric machine.
  • the main body 1 - se it in the stand 2 be it in the possibly existing housing
  • the electric machine - cooling channels 4 are arranged for a liq siges cooling medium.
  • the flow of the cooling medium in the cooling channels 4 is interpreted in Figure 1 by corresponding arrows, which are designated in Figure 1 by the reference numeral A.
  • the liquid cooling medium is usually water.
  • the cooling channels 4 can be arranged as needed. In ⁇ example, they can be formed as axially extending cooling channels ⁇ .
  • the term "axial" is related to an axis of rotation 5 of the electric machine, which means a direction parallel to the axis of rotation 5.
  • the cooling channels 4 may be in the case of an axial course ⁇ times continuous cooling channels 4, so that the feeding of the liquid cooling medium takes place at one axial end and the ⁇ feed of the cooling medium at the other axial end. In general, however, the entry and exit of the liquid cooling medium take place at the same axial end of the electric machine.
  • the cooling channels can run tangentially.
  • tangential is also related to the axis of rotation 5. It means a direction at a constant distance from the axis of rotation 5 about the axis of rotation 5 around.
  • the electric machine also has a rotor shaft 6.
  • the rotor shaft 6 is mounted in bearings 7 of the electric machine.
  • the rotor shaft 6 is therefore rotatable about the rotation ⁇ axis 5.
  • the rotor shaft 6 is formed as shown in FIG 1 as a hollow shaft. It is also permeated by the liquid cooling medium. This is indicated in FIG 1 by arrows, which are provided with the reference numbers Be ⁇ B.
  • the design of the rotor shaft 6 as a hollow shaft can be done as needed. In principle, it is possible to feed the liquid cooling medium at one axial end of the rotor shaft 6 into the rotor shaft 6 and feed it at the other axial end. As a rule, however, such a configuration is subject to considerable other disadvantages. As a rule, 6, therefore, the rotor shaft an inner tube 8, so that, as shown in FIG 1, the liquid cooling medium flows to ⁇ next in the inner tube 8 axially, then at the end of the inner tube 8 of the inner tube 8 emerges, and then in Gap between the rotor shaft 6 and the inner tube 8 flows back in the opposite direction.
  • the transition of the cooling medium from the inner tube 8 to the rotor shaft 6 may be designed as needed.
  • the inner tube 8, as shown in FIG 1, be open at its front end.
  • the inner tube 8 may have radial bores or other radial recesses.
  • the term “radial” in this case - as well as the loading terms “axial” and “tangential” be ⁇ attracted to the axis of rotation 5 of the term “radial” refers to a direction orthogo ⁇ nal to the rotation axis 5, on the axis of rotation. 5 to or away from her.
  • a hollow shaft formed rotor shafts 6 with inner inner tube 8 are known as such. Detailed explanations of the design of the rotor shaft 6 are therefore not required.
  • the rotor shaft 6 Due to the flow through the rotor shaft 6 with the liquid cooling medium, the rotor shaft 6 is cooled. Due to the cooling ⁇ ment of the rotor shaft 6 indirectly on the rotor shaft 6 rotatably arranged rotor 9 of the electric machine is cooled.
  • the electrical machine also has a heat exchanger 10.
  • the heat exchanger 10 serves to heat contained in the liquid coolant to the environment - usually the ambient air ⁇ - to be supplied.
  • the heat exchanger 10 may be formed as needed. Often the heat exchanger 10 is designed as a lamella cooler. Lamella coolers are well known as such in water-cooled automotive engines. If necessary, the lamella cooler can optionally be arranged horizontally or vertically. He may also be assigned, if necessary, a fan to optimize the cooling capacity of the heat exchanger 10.
  • the electrical machine comprises a fan which is arranged rotatably on the rotor shaft 6, it is further possible ⁇ out, outside put on the heat exchanger 10 directly to the base body 1, or otherwise be integrated into the base body.
  • the heat exchanger 10, the rotor shaft 6 and the cooling channels 4 are fluidly connected in pairs.
  • the heat exchanger 10 is thus connected to the rotor shaft 6 on the one hand and the cooling channels 4 on the other.
  • the Ro ⁇ torwelle 6 is connected to the heat exchanger 10 on the one hand and the cooling channels 4 on the other.
  • the cooling channels 4 are connected to the heat exchanger 10 on the one hand and with the rotor shaft 6 on the other hand in an analogous manner.
  • a conveying member 11 is present, which is incorporated ⁇ looped into the ge ⁇ closed cooling circuit for the liquid cooling medium.
  • the conveying element 11 is shown in FIGS. 1 to 3 arranged rotatably on the rotor shaft 6, so that it rotates when Ro ⁇ animals of the rotor shaft 6 also.
  • the liquid cooling medium is forcibly circulated during the rotation of the rotor shaft 6 around the axis of rotation 5 in the closed circuit for the liquid cooling medium.
  • the conveying direction of the liquid cooling medium is preferably such that the liquid cooling medium flows back from the heat exchanger 10 to the rotor shaft 6, from the rotor shaft 6 to the cooling channels 4 and from the cooling channels 4 back to the heat exchanger 10 due to the Zwangsum ⁇ trough the conveyor element 11.
  • the liquid cooling medium flows through the rotor shaft 6 before flowing to the cooling channels 4.
  • the liquid cooling medium naturally flows through the cooling channels 4 before it flows back to the heat exchanger 10.
  • the conveying element 11 can in principle be looped at any point into the closed circuit for the liquid cooling medium.
  • the conveying element 11 is looped ent ⁇ speaking the representation of Figures 1 to 3 between the rotor shaft 6 and the cooling channels 4 in the closed circuit for the liquid cooling medium.
  • the conveying element 11 may be formed as a paddle wheel ⁇ according to FIG 1 to 3 in mechanical design point of view, which surrounds the rotor shaft 6 radially outside and delivers the liquid cooling medium from radially inwardly to radially outwardly.
  • the conveyor element 11 is surrounded in this embodiment by a conveyor housing 12 which is rotatably mounted on the base body 1.
  • the rotor shaft 6 has at least one radial recess 13 in a region which is surrounded by the conveyor housing 12. Furthermore, in this case, a connection from the rotor shaft 6 to the cooling channels 4, through which the liquid cooling medium flows from the rotor shaft 6 to the cooling channels 4, is formed as a connecting line 14, which extends radially outward from the conveyor housing 12.
  • connection from the heat exchanger 10 to the rotor shaft 6 - more precisely, as a rule, to the inner tube 8 - can be configured as required. to be.
  • the liquid cooling medium is fed axially to the rotor shaft 6 in accordance with the illustration of FIG.
  • the encoder device 15 can be designed as a resolver or as an incremental encoder or similar transducer device.
  • an axial supply of the liquid cooling medium to the rotor shaft 6 is not possible.
  • the feeding of the liquid cooling medium of the representation of FIG.3 does not occur to the rotor shaft 6 entspre ⁇ accordingly axially, but radially.
  • the present invention has many advantages. Insbeson ⁇ more complete, resulting in good thermal cooling of the electrical machine in a simple manner without the need for an external coolant telan gleich.
  • the construction is also simple, reliable and virtually maintenance-free.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
EP11796688.7A 2010-12-23 2011-12-13 Elektrische maschine mit geschlossenem, autarkem kühlmediumkreislauf Withdrawn EP2633606A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010064010A DE102010064010A1 (de) 2010-12-23 2010-12-23 Elektrische Maschine mit geschlossenem, autarkem Kühlmediumkreislauf
PCT/EP2011/072518 WO2012084585A2 (de) 2010-12-23 2011-12-13 Elektrische maschine mit geschlossenem, autarkem kühlmediumkreislauf

Publications (1)

Publication Number Publication Date
EP2633606A2 true EP2633606A2 (de) 2013-09-04

Family

ID=45349194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11796688.7A Withdrawn EP2633606A2 (de) 2010-12-23 2011-12-13 Elektrische maschine mit geschlossenem, autarkem kühlmediumkreislauf

Country Status (7)

Country Link
US (1) US9431878B2 (pt)
EP (1) EP2633606A2 (pt)
CN (1) CN103283129B (pt)
BR (1) BR112013018324B1 (pt)
DE (1) DE102010064010A1 (pt)
RU (1) RU2577773C2 (pt)
WO (1) WO2012084585A2 (pt)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012217361A1 (de) 2012-09-26 2014-04-17 Siemens Aktiengesellschaft Elektrische Maschine mit Wärmetauscher
GB2501952B (en) * 2012-10-09 2014-03-26 Integral Powertrain Ltd A motor and a method of cooling a motor
EP2728718A1 (de) 2012-10-30 2014-05-07 Siemens Aktiengesellschaft Käfigläufer mit deformierbarer Lagerung der Läuferstäbe
EP2728719A1 (de) 2012-10-30 2014-05-07 Siemens Aktiengesellschaft Käfigläufer und Stab mit einem Einschnitt
EP2852030A1 (de) * 2013-09-20 2015-03-25 Siemens Aktiengesellschaft Kühlvorrichtung für eine elektrische Maschine und elektrische Maschine umfassend eine Kühlvorrichtung
EP2854262A1 (de) 2013-09-25 2015-04-01 Siemens Aktiengesellschaft Kühlvorrichtung für eine elektrische Maschine
DE102013226804B4 (de) * 2013-12-20 2015-07-09 Siemens Aktiengesellschaft Antriebsanordnung mit integrierter Schmierung
RU2644418C1 (ru) * 2014-02-17 2018-02-12 Сименс Акциенгезелльшафт Электрическая машина с рамой
EP2933902B1 (de) 2014-04-17 2016-06-01 Siemens Aktiengesellschaft Entwärmung einer elektrischen Maschine
CN104092333B (zh) * 2014-07-18 2017-01-25 宁夏西北骏马电机制造股份有限公司 防爆电机用冷却轴结构
US9762106B2 (en) * 2014-12-04 2017-09-12 Atieva, Inc. Motor cooling system
US20160164378A1 (en) * 2014-12-04 2016-06-09 Atieva, Inc. Motor Cooling System
DE102015201610A1 (de) * 2015-01-30 2016-08-04 Siemens Aktiengesellschaft Kühlvorrichtung zur Kühlung eines hochpoligen Rotors
EP3293495A1 (de) 2016-09-13 2018-03-14 Siemens Aktiengesellschaft Maschine mit gekühlter hohlwelle und konzentrischem drehgeber
GB201706438D0 (en) * 2017-04-24 2017-06-07 Rolls Royce Plc Electrical machine apparatus
DE102017218865A1 (de) 2017-10-23 2019-04-25 Audi Ag Elektrische Maschine und Kraftfahrzeug
US10923972B2 (en) * 2017-12-01 2021-02-16 American Axle & Manufacturing, Inc. Electric motor having stator with laminations configured to form distinct cooling channels
DE102017223491A1 (de) * 2017-12-21 2019-06-27 Audi Ag Elektromaschinenanordnung
JP2019115154A (ja) * 2017-12-22 2019-07-11 本田技研工業株式会社 回転電機
CN108954010B (zh) * 2018-09-17 2020-03-17 中国核动力研究设计院 一种水冷式异种气体稳压的超临界二氧化碳稳压装置
CN109149806A (zh) * 2018-10-17 2019-01-04 珠海格力电器股份有限公司 电机、压缩机及空调
CN109546792A (zh) * 2018-12-04 2019-03-29 深圳先进技术研究院 一种电机
CN109980822B (zh) * 2018-12-25 2024-05-24 南京航空航天大学 一种快速冷却的外转子永磁同步电机
EP3709484A1 (de) * 2019-03-14 2020-09-16 Siemens Aktiengesellschaft Gekapselte elektrische maschine mit äusserem flüssigkeitskühlkreislauf
EP3730946B1 (en) * 2019-04-23 2023-04-26 Ningbo Geely Automobile Research & Development Co. Ltd. Shaft arrangement for a vehicle
DE102019117637A1 (de) * 2019-07-01 2021-01-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Anordnung zum Kühlen einer Elektromaschine bei einem Kraftfahrzeug sowie Verfahren zum Betreiben der Anordnung
EP3920384B1 (en) * 2020-01-15 2023-06-21 Huawei Digital Power Technologies Co., Ltd. Motor rotor and vehicle
CN112165217A (zh) * 2020-08-05 2021-01-01 珠海市智川科技有限公司 一种智能温控伺服电机及其工作原理
CN112865432B (zh) * 2020-08-19 2022-05-06 上海迈昆控制系统有限公司 一种永磁无铁芯低扭矩微阻电机
DE102021205801A1 (de) 2021-06-09 2022-03-31 Zf Friedrichshafen Ag Elektrische Maschine mit einem Stator und einem Rotor
DE102022134151A1 (de) 2022-12-20 2024-06-20 Valeo Eautomotive Germany Gmbh Elektrische Maschine, insbesondere zum Antreiben eines Fahrzeugs

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU106727A1 (ru) * 1955-06-29 1956-11-30 Р.И. Ласточкин Закрыта электрическа машина
US3009072A (en) * 1958-01-28 1961-11-14 Scott L & Electromotors Ltd Fluid cooled motors
US3060335A (en) * 1961-02-07 1962-10-23 Garrett Corp Fluid cooled dynamoelectric machine
SU1244750A1 (ru) * 1983-07-11 1986-07-15 Северо-Западный Заочный Политехнический Институт Электрическа машина переменного тока с жидкостным охлаждением
SU1365255A1 (ru) * 1986-03-14 1988-01-07 Специальное проектно-конструкторское и технологическое бюро по погружному электрооборудованию для бурения скважин и добычи нефти Всесоюзного научно-производственного объединения "Потенциал" Погружной жидкостнозаполненный электродвигатель
SU1601699A1 (ru) * 1987-11-13 1990-10-23 Московский энергетический институт Электрическа машина с непосредственным вод ным охлаждением
DE9112631U1 (de) 1991-10-10 1993-02-04 Siemens AG, 8000 München Flüssigkeitsgekühlte elektrische Maschine
DE19635196A1 (de) * 1996-08-30 1998-03-12 Audi Ag Kühlanordnung für einen Elektromotor
EP0989658A1 (fr) * 1998-09-28 2000-03-29 The Swatch Group Management Services AG Machine électrique asynchrone refroidie par liquide
GB2357377A (en) * 1999-12-13 2001-06-20 Delphi Tech Inc Cooling a combined pump and electric generator
DE10244428A1 (de) 2002-09-24 2004-06-17 Siemens Ag Elektrische Maschine mit einer Kühleinrichtung
DE10309161A1 (de) 2003-02-28 2004-09-16 Siemens Ag Elektrische Maschine mit geblechtem Läufer
DE102009029716A1 (de) 2008-06-18 2009-12-24 Ixetic Bad Homburg Gmbh Elektromotor
DE102008036124A1 (de) 2008-08-01 2010-02-11 Siemens Aktiengesellschaft Elektrische Maschine in hoher Schutzart mit verbesserter Läuferkühlung
CN201298784Y (zh) * 2008-11-14 2009-08-26 无锡开普动力有限公司 水冷发电机
CN201504150U (zh) * 2009-09-11 2010-06-09 陈思扬 油浸式水冷电机

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2012084585A2 *

Also Published As

Publication number Publication date
RU2013134240A (ru) 2015-01-27
CN103283129A (zh) 2013-09-04
WO2012084585A3 (de) 2013-01-31
BR112013018324A2 (pt) 2018-09-18
DE102010064010A1 (de) 2012-06-28
US9431878B2 (en) 2016-08-30
CN103283129B (zh) 2016-02-17
US20130270939A1 (en) 2013-10-17
WO2012084585A2 (de) 2012-06-28
BR112013018324B1 (pt) 2020-10-06
RU2577773C2 (ru) 2016-03-20

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