WO2019154575A1 - Module d'entraînement, en particulier pour un véhicule hybride ou électrique avec un dispositif de refroidissement fluidique - Google Patents

Module d'entraînement, en particulier pour un véhicule hybride ou électrique avec un dispositif de refroidissement fluidique Download PDF

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Publication number
WO2019154575A1
WO2019154575A1 PCT/EP2019/050428 EP2019050428W WO2019154575A1 WO 2019154575 A1 WO2019154575 A1 WO 2019154575A1 EP 2019050428 W EP2019050428 W EP 2019050428W WO 2019154575 A1 WO2019154575 A1 WO 2019154575A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
stator
drive module
heat sink
electronics
Prior art date
Application number
PCT/EP2019/050428
Other languages
German (de)
English (en)
Inventor
Alexander Markow
Gerald Viernekes
Original Assignee
Zf Friedrichshafen 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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2019154575A1 publication Critical patent/WO2019154575A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • 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
    • 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
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the invention relates to a drive module, in particular for a hybrid or electric vehicle according to the preamble of patent claim 1.
  • Such a drive module has already become known from DE 10 2014 220 835 A1 and comprises an electric machine embodied as an internal rotor with a stator which is arranged on a stator carrier and is in heat exchange contact with the stator and arranged with one within the stator and rotatably mounted rotor. Furthermore, an electronic assembly, in particular a power electronics for controlling the electrical machine is provided in this drive module in a central space within the rotor, which is in heat exchange contact with a substantially cylindrical electronics heat sink. To dissipate heat loss from the drive module, a fluid cooling arrangement is provided for cooling the stator and the electronic assembly, wherein fluid passages in fluid communication with one another are formed on the stator carrier and on the electronics heat sink.
  • stator and the electronics heat sink are made in one piece and have a complex geometry that makes high demands in terms of manufacturing technology.
  • the invention is based on the cited prior art, the task to represent a manufacturing technology simplified and cost-effective drive module.
  • these can first be made on the basis of simple semi-finished products such as hollow cylinders, solid cylinders, blanks or flat sheets.
  • the fluid channels provided in the elements can preferably be introduced in the region of the surface by machining and / or by forming processes, so that casting-technical methods can largely be dispensed with.
  • the fluid channels created in the base material of the stator carrier and electronics cooling body can then be sealed in a fluid-tight manner by means of comparatively simply shaped cover elements, such as tubes or disks.
  • the electronics heat sink may at the same time also represent a mounting base or a carrier for the electronics module. Arranged and to be cooled electronic components can extend from a circuit board in the axial direction into a receiving space of the electric machine and / or in the opposite direction
  • the fluid cooling arrangement comprises in a conventional manner a fluid inlet and a fluid outlet, which on the one hand can be designed either on the stator carrier or on the electronic cooling element or on the stator carrier and on the electronic cooling element.
  • the fluid inlet on the stator carrier and the fluid outlet on the electronic cooling element can be formed, for example.
  • the described drive module is provided in particular for driving a hybrid or electric vehicle.
  • the drive module of the electronics heat sink may be formed as a bearing plate for supporting the rotor and to have a bearing seat for arranging a bearing, in particular a rolling bearing in a central recess.
  • the bearing plate may be formed substantially disc-shaped, wherein fluid channels of the electronics heat sink manufacturing technology advantageously carried out within a lateral surface of the bearing plate as axially open grooves and sealed fluid-tight with a cover element.
  • a fluid channel extending in the circumferential direction can be formed there, in particular with an annular, loop-shaped, helical or, for example, meandering shape.
  • the stator can have a hollow cylindrical shape and a shell-shaped cooling jacket, for which at an inner or outer peripheral surface area for forming at least one fluid channel a circumferentially extending radial recess is formed, which can be closed fluid-tight by a shell element.
  • the peripheral surface may be an inner or outer peripheral surface, wherein it is formed as an inner peripheral surface in an inner rotor motor as an outer peripheral surface and in an outer rotor motor.
  • connection channel is provided between them, at least partially or completely guided within the main body.
  • a fluid-conducting element which allows a directional fluid passage between the aforementioned elements, can further be provided to a mutual connection region of the stator carrier and the electronics cooling body.
  • connection channel formed completely within the base body externally routed fluid channel sections can be dispensed with.
  • the connection of the stator carrier and the electronics heat sink can be designed as a detachable connection, in particular as a screw connection.
  • the mutually adjacent and connected fluid channel sections in the connection region extend in the axial or radial direction.
  • a fluid inlet and a fluid outlet are easy to install provided on the outer peripheral surface of the stator.
  • provision may be made for arranging the electronic cooling body with an outer circumferential surface within an inner peripheral surface of the stator carrier and at least one fluid channel section extending essentially radially through the stator carrier into the electronics cooling body.
  • the Fluidlei- telement may be formed as an insert which is inserted into mutually aligned recesses of the stator and the electronics heat sink and one of the recesses closes on one side and fluidly connected in the connecting region fluid channel sections of stator and electronics heat sink fluidly.
  • the fluid channels in the stator carrier and in the electronics heat sink are in each case designed as annular channels connected in series in terms of flow, the connection regions for the fluid inlet and the fluid outlet being arranged on the stator carrier.
  • FIG. 1 is a schematic representation of a drive module with an electric machine, an electronic module and a fluid cooling arrangement
  • FIG. 2 shows a detail of the drive module of FIG. 1 with a fluid inlet of the fluid cooling arrangement formed on a stator carrier, FIG.
  • FIG. 3 is a radial sectional view of the drive module of FIG. 1 in the region of a bearing plate of the electric machine, FIG.
  • FIG. 4 shows a detail of the drive module of FIG. 1 with the fluid cooling arrangement formed in a connection area of the end shield with a stator carrier
  • FIG. 5 shows a detail of the drive module of FIG. 1 with a fluid outlet of the fluid cooling arrangement formed on the stator carrier.
  • the drive module 10 comprises an electric machine 12 designed as an internal rotor, an electronic assembly 28 for controlling the electric machine 12, and a common fluid cooling arrangement 32 for discharging the heat loss incurred during operation of the drive module 10.
  • the electric machine 12 comprises in a conventional manner a stator 16 which is arranged on a stator support 16a and is in contact with the latter in heat exchange and further to the stator 16 rotatably mounted rotor 14.
  • the rotor 14 is by means of a rotor support 14a with a ro- Torwelle 14b connected, which is supported by bearings 22, 24 in two axially spaced end shields 18, 20.
  • the electronic module 28 is designed as a power electronics with an inverter and includes corresponding electronic components such as power semiconductor switches, capacitors, resistors and the like, which are not shown here in detail and arranged on a common board, which is fixed to an electronic heat sink 30 is and is in heat exchange contact with this.
  • the bearing plate 18 is at the same time designed as a heat sink 30 and opposite to the stator carrier as a separate component and is further screwed to the latter by bolts (not illustrated in the drawing).
  • the already mentioned fluid cooling arrangement 32 comprises a fluid inlet 34 formed on the outer periphery of the stator support 16a, a fluid outlet 36 likewise provided there, and a plurality of fluid channels 38a-i formed on the stator support 16a and on the electronics heat sink 30 and in fluid communication therewith Entity form a fluid channel assembly 38.
  • the fluid channels 38a-i are fluidly connected in series.
  • a cooling fluid can enter via an insertion tube 34a forming the fluid inlet 34 into a fluid channel 38a introduced into the stator carrier 16a, in order then to continue to pass in the insertion tube 34a into a fluid channel 38 of the end shield 18.
  • Both fluid channels 38a, 38b are designed as mutually aligned radial bores into which the insertion tube 34a is inserted in a fluid-tight manner by means of O-ring seals 40, 42.
  • the bearing plate 18 is substantially disk-shaped, in particular circular disk-shaped, and is inserted in the hollow-cylindrical stator carrier 16a by means of a diameter step provided on the outer circumferential region.
  • the bearing plate 18 and the stator can be preferred, but not necessarily made of the same material, for example, an aluminum or a steel alloy.
  • the electronic heat sink 30 or the bearing plate 18 is thus arranged with an outer peripheral surface 18a within an inner peripheral surface 16b of the stator support 16a and thereby centered and further axially positioned by means of a lateral surface 18b which bears against a stop surface 16c on the stator support 16a.
  • the stepped in diameter and radially inwardly extending fluid channel 38b opens into an initial region of a running within a lateral surface of the bearing plate 18 as an axially open groove fluid channel 38c.
  • the fluid channel 38c extends as shown in FIG. 3, initially with a radially outer portion in the electronics heat sink 30 annularly in the circumferential direction almost 360 to a reversing position 44 and from there to form a 180 ° loop with a radially inner portion back to to an end region which is circumferentially adjacent to the initial region.
  • the fluid channel 38c is closed in a fluid-tight manner overall with a cover element 46 which is C-shaped in cross-section.
  • the fluid can continue to enter from the end region of the fluid channel 38c into a fluid channel 38d, which in turn is embodied as a radial bore in the bearing plate 18 and into a fluid channel 38e, which is likewise in the stator carrier 16a as a radial bore and into a ring-shaped fluid channel 38 via a radially rising fluid channel 38.
  • Migen fluid channel 38 g of a stator formed on the stator 16 cooling jacket 52 are passed.
  • the fluid channel 38e thus functions as a connecting channel between the bearing plate 18 or the electronic cooling body 30 and the stator support 16a, wherein in the mutual connection region of the stator support 16a and the electronics cooling body 30 or the end shield 18 a fluid guide element 48 is provided, which is a directed Fluid passage between the aforementioned elements allows.
  • the fluid guide element 48 is formed as a separate part and in particular as an insert part, which radially outward into mutually aligned radial recesses 16 d; 18 c of the stator support 16 a and the electronics heat sink 30 is inserted and fixed axially by means of a stop in the form of a diameter step 18 d and by means of a securing ring 50.
  • the fluid-conducting element 48 has a cup-shaped cylindrical shape and connects the fluid channel sections 38d-f arranged in the connection region in terms of flow, the fluid guide element 48 has a closed bottom 48a radially on the outside, which closes the recess 16d.
  • a plurality of radial outlet openings 48e are provided at the height of the stator carrier 48, which open together at the outer periphery into an annular groove 48f formed there.
  • the fluid can collect in this annular groove 48f and be transferred from this into the fluid channel 38f.
  • sealing elements 48b, c, d are provided between the insert element and the bearing flange 18 or the stator support 16a.
  • the formed on the stator support 16a fluid channel 38g is realized within a cup-shaped cooling jacket 52, for which on an outer peripheral surface region of the stator support 16a, a groove-shaped radial recess 16e is formed, which extends approximately over the entire axial width of the stator 16 and approximately completely in the circumferential direction.
  • the recess 16e is formed by a substantially cylindrical shell element 54 and axially on both sides inserted sealing elements fluid-tightly sealed, of which in Figs. 2, 4 and 5, only one sealing element 56 is shown.
  • the fluid can leave the cooling jacket 52 or the fluid channel 38g again via an obliquely radially inwardly extending fluid channel 38h, in order to enter into a fluid channel 38i designed as a radial blind hole, which partially runs in the draft tube 36a forming the fluid outlet 36 ,
  • Reference numeral drive module 34 fluid inlet
  • End shield 48 Fluidleitelementa outer peripheral surface 48a bottom

Landscapes

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

Abstract

La présente invention concerne un module d'entraînement (10) comprenant un moteur électrique (12) ayant un stator (16), qui est disposé au niveau d'un support de stator (16a) et est en contact d'échange thermique avec ce dernier et un rotor (14) logé rotatif par rapport au stator (16), et comprenant en outre un sous-ensemble électronique (28) qui est en contact d'échange thermique avec un dissipateur thermique pour l'électronique (30). Selon l'invention est prévu un dispositif de refroidissement fluidique (32) doté de canaux fluidiques (38a-i) pour le refroidissement du stator (16) et du sous-ensemble électronique (28). Le module d'entraînement (10) présente une structure de construction simple avec laquelle le dissipateur thermique pour l'électronique (30) est formé en tant que sous-ensemble séparé du support de stator (16a) et relié au support de stator (16a).
PCT/EP2019/050428 2018-02-08 2019-01-09 Module d'entraînement, en particulier pour un véhicule hybride ou électrique avec un dispositif de refroidissement fluidique WO2019154575A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018201983.5 2018-02-08
DE102018201983.5A DE102018201983A1 (de) 2018-02-08 2018-02-08 Antriebsmodul, insbesondere für ein Hybrid- oder Elektrofahrzeug mit einer Fluidkühlanordnung

Publications (1)

Publication Number Publication Date
WO2019154575A1 true WO2019154575A1 (fr) 2019-08-15

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PCT/EP2019/050428 WO2019154575A1 (fr) 2018-02-08 2019-01-09 Module d'entraînement, en particulier pour un véhicule hybride ou électrique avec un dispositif de refroidissement fluidique

Country Status (2)

Country Link
DE (1) DE102018201983A1 (fr)
WO (1) WO2019154575A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4152573A1 (fr) * 2021-09-15 2023-03-22 Robert Bosch GmbH Logement d'un module e-essieu

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019133363A1 (de) * 2019-12-06 2021-06-10 Witzenmann Gmbh Kühlsystem, elektrische Antriebseinheit, Elektrofahrzeug und Verfahren zum Kühlen einer elektrischen Antriebseinheit
DE102020116661A1 (de) * 2020-06-24 2022-02-17 Witzenmann Gmbh Lageranordnung in einem Elektromotor, Elektromotor mit einer solchen Lageranordnung und Verwendung eines Elektromotors

Citations (5)

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Publication number Priority date Publication date Assignee Title
WO2004040738A1 (fr) * 2002-10-28 2004-05-13 Valeo Equipments Electriques Moteur DISPOSITIF DE REFROIDISSEMENT DE L'ELECTRONIQUE DE PUISSANCE INTéGREE A L'ARRIERE D'UN ALTERNATEUR OU D'UN ALTERNO-DEMARREUR
WO2014194060A1 (fr) * 2013-05-30 2014-12-04 Remy Technologies. Llc Machine électrique ayant un boîtier refroidi par liquide
DE102014220835A1 (de) 2014-10-15 2016-04-21 Zf Friedrichshafen Ag Antriebsvorrichtung für einen Kraftfahrzeugantriebsstrang
DE102015205141A1 (de) * 2015-03-23 2016-09-29 Zf Friedrichshafen Ag Fluidgekühlte Antriebseinheit für ein Kraftfahrzeug
US20170018991A1 (en) * 2014-03-31 2017-01-19 Continental Automotive Gmbh Electric Machine

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JP2000083351A (ja) * 1998-09-03 2000-03-21 Hitachi Ltd 車両用交流発電機及び車両用冷却装置
DE112012003901B4 (de) * 2011-09-20 2022-05-05 Mitsubishi Electric Corp. Mechanisch und elektrisch integriertes Modul

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004040738A1 (fr) * 2002-10-28 2004-05-13 Valeo Equipments Electriques Moteur DISPOSITIF DE REFROIDISSEMENT DE L'ELECTRONIQUE DE PUISSANCE INTéGREE A L'ARRIERE D'UN ALTERNATEUR OU D'UN ALTERNO-DEMARREUR
WO2014194060A1 (fr) * 2013-05-30 2014-12-04 Remy Technologies. Llc Machine électrique ayant un boîtier refroidi par liquide
US20170018991A1 (en) * 2014-03-31 2017-01-19 Continental Automotive Gmbh Electric Machine
DE102014220835A1 (de) 2014-10-15 2016-04-21 Zf Friedrichshafen Ag Antriebsvorrichtung für einen Kraftfahrzeugantriebsstrang
DE102015205141A1 (de) * 2015-03-23 2016-09-29 Zf Friedrichshafen Ag Fluidgekühlte Antriebseinheit für ein Kraftfahrzeug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4152573A1 (fr) * 2021-09-15 2023-03-22 Robert Bosch GmbH Logement d'un module e-essieu

Also Published As

Publication number Publication date
DE102018201983A1 (de) 2019-08-08

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