WO2018001608A1 - Machine électrique - Google Patents

Machine électrique Download PDF

Info

Publication number
WO2018001608A1
WO2018001608A1 PCT/EP2017/060754 EP2017060754W WO2018001608A1 WO 2018001608 A1 WO2018001608 A1 WO 2018001608A1 EP 2017060754 W EP2017060754 W EP 2017060754W WO 2018001608 A1 WO2018001608 A1 WO 2018001608A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
shoulder
fluid
fluid channel
machine according
Prior art date
Application number
PCT/EP2017/060754
Other languages
German (de)
English (en)
Inventor
Thomas Winter
Zhengyu Liu
Markus Heidrich
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2018001608A1 publication Critical patent/WO2018001608A1/fr

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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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

Definitions

  • the invention is based on an electrical machine according to the preamble of the main claim.
  • An electric machine from JP 2015-122899A is already known, with a housing which comprises a stator with an electrical winding and has at least one frontal opening in which a bearing plate is arranged, which is a receptacle for a shaft bearing for supporting a rotor shaft and has a for the centering of the bearing plate relative to the housing provided and projecting into the housing shoulder.
  • the electrical winding of the stator forms at the end faces of the stator in each case a winding head which can be sprayed via openings of a fluid channel with a fluid.
  • the fluid channel is arranged as a separate line on the inner circumference of the housing and includes nozzles to spray the fluid of the fluid channel into the housing, in particular on the winding heads of the electrical winding.
  • the electrical machine according to the invention with the characterizing features of the main claim has the advantage that the manufacturing cost of the electric machine can be reduced by the fluid channel between the shoulder of the bearing plate and the housing is formed.
  • the measures listed in the dependent claims are advantageous
  • a groove is provided on the shoulder, which forms the fluid channel together with the inner circumference of the housing.
  • a groove may be provided on the inner circumference of the housing, which together with the Shoulder forms the fluid channel.
  • the fluid channel can be particularly easily integrated in the shoulder of the bearing plate, wherein the radially outwardly open groove through the wall of the inner circumference of the housing of the electric machine to the closed channel.
  • a press fit or clearance fit may be provided between the shoulder and the inner circumference of the housing such that the fluid channel is substantially dense.
  • a clearance fit between the shoulder and the inner periphery of the housing can be made such that there is a leakage gap through which fluid can escape from the fluid channel and thereby set a predetermined pressure in the fluid channel.
  • the shoulder of the bearing plate at least partially surrounds or surrounds the winding head of the electric machine, since the fluid in this way is particularly easy sprayable or sprayable on the winding head.
  • outlet openings of the fluid channel are arranged such that the fluid emerging from the outlet openings strikes the winding head. In this way, an effective and cost-effective cooling of the winding head is achieved.
  • the winding head has passage openings which are arranged such that the fluid exiting the outlet openings of the fluid channel during operation of the electric machine passes via the passage openings of the winding head onto the rotating rotor shaft or a rotor arranged on the rotor shaft.
  • the fluid is again thrown from the rotor shaft or the rotor from radially inside the winding head to the outside radially against the winding head, whereby an additional cooling effect is achieved.
  • the groove extends on the shoulder in the circumferential direction over a partial circumference or over the entire circumference of the shoulder.
  • Housing remote from the shoulder are arranged in the circumferential direction one behind the other, in particular at the same distance from each other. In this way, a homogeneous temperature distribution throughout the winding head is achieved. It is also advantageous if the fluid channel is connected via a connection channel with a fluid connection provided on the end plate.
  • the fluid connection can be arranged according to a first embodiment on the front side or according to a second embodiment at the periphery of the bearing plate.
  • Fig.l shows in section a simplified illustrated electric machine and Fig.2 an inventive bearing plate according to Fig.l.
  • Fig.l shows in section a simplified illustrated electrical machine.
  • the electric machine 1 has a housing 2, which comprises a stator 3 with an electrical winding 4 and has at least one end-side housing opening 5, on each of which a decker-shaped bearing plate 6 is arranged, which closes the respective housing opening 5 tightly.
  • a sealing means 7, in particular an O-ring, is provided between the bearing plate 6 and the housing 2.
  • the housing 2 is designed as a hollow cylinder with two housing openings 5 and two ceiling-shaped end shields 6.
  • the housing 2 could also be executed cup-shaped with a housing opening 5 and the housing opening 5 occlusive ceiling-shaped bearing plate 6.
  • the ceiling-shaped bearing plate 6 has a receptacle 9 for a shaft bearing 10 for supporting a rotor shaft 11 and provided for centering the bearing plate 6 and projecting into the housing 2 shoulder 12.
  • the shoulder 12 is formed for example as an annular circumferential shoulder. Alternatively, however, several shoulders 12 could be provided, which are spaced apart in the circumferential direction with respect to the housing 2.
  • balancing wheel 13.1 At the end faces of the rotor 13 in each case one in the axial direction projecting balancing wheel 13.1 is arranged in a permanent-magnet synchronous machine. In the case of an asynchronous machine, a short-circuit ring 13.1 projecting in the axial direction is provided on the front sides of the rotor 13 in each case.
  • the electrical winding 4 forms at the end faces of the stator 3 in each case a winding head 15 which can be sprayed via outlet openings 16 of a fluid channel 17 with a fluid, in particular oil, in order to achieve cooling of the winding head 15.
  • the housing 2 may have an oil drain opening 8 for discharging the
  • the outlet openings 16 are designed for example nozzle-shaped.
  • the fluid channel 17 is connected via a connecting channel 18 to a fluid port 20 provided on the end shield 6, which is provided, for example, by a fluid port 20, not shown
  • Fluid pump is supplied with fluid.
  • the fluid connection 20 may be arranged on the circumference or on the front side of the bearing plate 6.
  • the fluid channel 17 is formed on the shoulder 12 or on one of the shoulders 12 of the bearing plate 6.
  • the embodiment surrounds or surrounds the shoulder 12 of the respective bearing plate 6, the respective winding head 15 of the electric machine 1 at least partially, so that the outlet openings 16 of the fluid channel 17 from the
  • Outlet 16 can exiting fluid radially inwardly with respect to a rotor axis 14 of the rotor shaft 11 to the winding head 15.
  • the shoulder 12 of the bearing plate 6 is therefore arranged in the radial direction with respect to the rotor axis 14 outside of the winding head 15 and can extend into the region of the winding head 15 seen in the axial direction.
  • the outlet openings 16 of the fluid channel 17 may be aligned in the radial direction with respect to the rotor axis 14 or obliquely to the radial direction.
  • a groove 21 is provided which forms the fluid channel 17 together with the inner circumference of the housing 2.
  • the groove 21 extends on the shoulder 12 in the circumferential direction over part of the circumference or over the entire circumference of the shoulder 12
  • Dimensions of the groove 21, in particular the length of the groove 21 measured in the circumferential direction, as well as the number and the diameter of the outlet openings 16 can be designed so that optimum cooling of the winding head results for the respective application.
  • the outlet openings 16 of the fluid channel 17 are arranged on the side facing away from the housing 2 of the shoulder 12 in the circumferential direction one behind the other and open into the groove 21 ( Figure 2).
  • a press fit or a clearance fit may be provided between the shoulder 12 and the inner circumference of the housing 2 such that the fluid channel is substantially dense.
  • a clearance fit may be made such that there is a leakage gap 22 through which fluid can escape from the fluid channel and thereby set a predetermined pressure in the fluid channel 17.
  • the leakage gap 22 is to be designed such that the fluid of the fluid channel 17 exits substantially via the outlet openings 16 and not via the leakage gap 22.
  • the winding head 15 may have passage openings 23 which are arranged such that the fluid emerging from the outlet openings 16 of the fluid channel 17 passes via the passage openings 23 of the winding head 15 onto the rotor shaft 11 or the rotor 13. As a result, when the rotor shaft 11 rotates, the fluid is once again thrown onto the winding head 15 by the rotor shaft 11 or by the rotor 13 from radially inside the winding head 15, resulting in an additional cooling effect.
  • the passage openings 23 are arranged in the winding head 15 such that the fluid flowing through the passage openings 23 strikes the balancing disks 13.1 or the short-circuit ring 13.1 of the rotor 13 and thrown radially outward therefrom.
  • FIG. 2 shows an inventive end shield according to Fig.l.
  • the opposite of the electrical machine according to Fig.l constant or equivalent parts are indicated by the same reference numerals.

Landscapes

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

Abstract

On connaît déjà des machines électriques, pourvues d'un carter qui comporte un stator avec un enroulement électrique et comprend au moins une ouverture frontale dans laquelle est disposé un flasque qui comprend un logement pour un palier d'arbre pour supporter un arbre de rotor, et un épaulement destiné au centrage du flasque par rapport au carter et faisant saillie dans le carter. L'enroulement électrique du stator forme sur chaque face frontale du stator une tête d'enroulement qui peut être aspergée par un fluide par l'intermédiaire d'ouvertures d'un canal de fluide. Le canal de fluide est disposé sous forme d'une conduite séparée sur le pourtour interne du carter et comprend des buses pour asperger le fluide du canal de fluide dans le carter, en particulier sur les têtes d'enroulement de l'enroulement électrique. Avec la machine électrique selon l'invention, les coûts de fabrication de la machine électrique sont réduits. Selon l'invention, le canal de fluide (17) est formé entre l'épaulement (12) du flasque (6) et le carter (2).
PCT/EP2017/060754 2016-06-28 2017-05-05 Machine électrique WO2018001608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016211593.6 2016-06-28
DE102016211593.6A DE102016211593A1 (de) 2016-06-28 2016-06-28 Elektrische Maschine

Publications (1)

Publication Number Publication Date
WO2018001608A1 true WO2018001608A1 (fr) 2018-01-04

Family

ID=58669809

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/060754 WO2018001608A1 (fr) 2016-06-28 2017-05-05 Machine électrique

Country Status (2)

Country Link
DE (1) DE102016211593A1 (fr)
WO (1) WO2018001608A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108092451A (zh) * 2018-01-10 2018-05-29 上海硅泰电子有限公司 盘式电机的散热结构
WO2022135696A1 (fr) 2020-12-22 2022-06-30 Gkn Automotive Limited Moteur électrique doté d'un système de refroidissement et procédé de commande d'un système de refroidissement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008001621A1 (de) * 2008-05-07 2009-11-12 Robert Bosch Gmbh Elektrische Maschine mit einer integrierten Gehäusekühlung
US20100320851A1 (en) * 2009-06-17 2010-12-23 Deere & Company Internal oil cooling via housing end brackets for an electric machine
JP2015122899A (ja) 2013-12-24 2015-07-02 シンフォニアテクノロジー株式会社 回転電機
DE102014219724A1 (de) * 2014-09-29 2016-03-31 Robert Bosch Gmbh Elektrische Maschine mit Kühlung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008001621A1 (de) * 2008-05-07 2009-11-12 Robert Bosch Gmbh Elektrische Maschine mit einer integrierten Gehäusekühlung
US20100320851A1 (en) * 2009-06-17 2010-12-23 Deere & Company Internal oil cooling via housing end brackets for an electric machine
JP2015122899A (ja) 2013-12-24 2015-07-02 シンフォニアテクノロジー株式会社 回転電機
DE102014219724A1 (de) * 2014-09-29 2016-03-31 Robert Bosch Gmbh Elektrische Maschine mit Kühlung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108092451A (zh) * 2018-01-10 2018-05-29 上海硅泰电子有限公司 盘式电机的散热结构
WO2022135696A1 (fr) 2020-12-22 2022-06-30 Gkn Automotive Limited Moteur électrique doté d'un système de refroidissement et procédé de commande d'un système de refroidissement
DE112020007883T5 (de) 2020-12-22 2023-10-12 Gkn Automotive Limited Elektromotor mit Kühlanordnung und Verfahren zur Steuerung einer Kühlanordnung

Also Published As

Publication number Publication date
DE102016211593A1 (de) 2017-12-28

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