WO2021213583A1 - Contact électrique d'un stator de machine électrique - Google Patents

Contact électrique d'un stator de machine électrique Download PDF

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Publication number
WO2021213583A1
WO2021213583A1 PCT/DE2021/100301 DE2021100301W WO2021213583A1 WO 2021213583 A1 WO2021213583 A1 WO 2021213583A1 DE 2021100301 W DE2021100301 W DE 2021100301W WO 2021213583 A1 WO2021213583 A1 WO 2021213583A1
Authority
WO
WIPO (PCT)
Prior art keywords
busbar
ring
stator
ring conductor
electrical
Prior art date
Application number
PCT/DE2021/100301
Other languages
German (de)
English (en)
Inventor
Andreas Ruppert
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2021213583A1 publication Critical patent/WO2021213583A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the invention relates to electrical contacting of a stator of an electrical machine.
  • the stator of the electrical machine has three ring conductors which are arranged at one end of the stator. Three busbars are provided, one of the busbars being connected in an electrically conductive manner to one of the ring conductors via ends of the ring conductors.
  • the German patent application DE 10 2014201 637 A1 relates to a method for producing a stator which has several stator poles and at least one busbar for electrically connecting the ends of the windings of different stator poles.
  • the busbar is constructed in several parts and has several holding parts, on each of which at least one winding wire can be fixed. After the winding process, the busbar is put together in that the holding parts are connected in an electrically conductive manner by means of the connecting part.
  • the European patent EP 3 300218 B1 relates to a contact ring for arrangement on a stator of an electronically commutated electric motor.
  • the contact ring is formed from at least two pairs of identical, partially ring-shaped, metallic elements. Each of the pairs is connected to a terminal lug for connection to a voltage source.
  • the connection lugs require a lot of axial installation space.
  • Permanent magnet synchronous machines are used in many industrial applications and increasingly also in the automotive industry.
  • Such a PSM machine consists of a stator to be energized and a permanently excited rotor.
  • the stator consists at least of stator windings (wire windings), a stator carrier, a connection ring and a terminal for power electronics.
  • stator teeth As a rule, three consecutive teeth form one Pole pair.
  • the individual pole pairs for example three teeth, must be coupled to one another or electrically connected.
  • the implementation and accessibility of this star point is often limited by the installation space.
  • a common way is to connect the two ends of a ring conductor to a busbar. This requires a high level of positioning accuracy, more precise individual part tolerances and several welding and connection points.
  • the object of the invention is therefore to create electrical contacting of a stator of an electrical machine through an embodiment of the interconnection ring, so that the contacting and assembly of the busbar and the associated ring conductor can be considerably simplified, so that the processes are streamlined, process times are shortened and Costs can be saved.
  • This object is achieved by making electrical contact with a stator of an electrical machine, which comprises the features of claim 1.
  • the electrical contacting according to the invention of the stator of the electrical machine is achieved in that the ends of each ring conductor overlap in the circumferential direction and are firmly connected to one another.
  • a flat piece of the corresponding busbar is connected to the overlapping ends of the corresponding ring conductor.
  • the contacting according to the invention has the advantage that electrical losses are significantly reduced since the number of connection points (weld points) is reduced.
  • the contact area of the connection between the ring conductor and the flat piece of the corresponding busbar is significantly increased.
  • the connection of each ring conductor is carried out at its ends by means of a weld seam.
  • the connection of the Flat piece of the corresponding busbar can be executed with the overlapping ends of the corresponding ring conductor by means of a weld seam.
  • Each ring conductor has an S-shaped section at each end. As a result of the impact, the two ends can be arranged so as to overlap in the axial direction.
  • Each busbar has an offset so that a threaded bushing of each busbar is arranged at a distance in the axial direction from the ring conductor.
  • the busbars designed according to the invention can be made much simpler.
  • the contact area to the ring conductors is flat and therefore forgives large tolerance deviations.
  • the manufacturing costs can also be reduced by the flat contacting area, since less manufacturing effort, such as, for. B. Bending operations in the training of the
  • the installation space in the area of the contact (between busbar and ring conductor) can be reduced considerably.
  • This optimization also benefits an insulation process, since the area is now more easily accessible and can therefore be more easily integrated into an insulation process.
  • the current circuit can also be optimized according to the invention.
  • FIG. 1 shows a perspective top view of a stator end on which
  • Busbars connect the ring conductors.
  • FIG. 2 shows an enlarged perspective view of the assignment of one of the busbars to the respective ring conductor according to the prior art.
  • Figure 3 shows a perspective view of the electrically conductive connection of the busbars with the respective ring conductor according to the prior art.
  • FIG. 4 shows a perspective view of a ring conductor according to the invention.
  • FIG. 5 shows a perspective view of the assignment and connection according to the invention of one of the busbars with the respective ring conductor.
  • FIG. 6 shows a side view of a busbar which is connected to the ring conductor according to the invention.
  • FIG. 7 shows a side view of a busbar which is connected to the ring conductor according to the prior art. Identical elements are used for elements of the invention which are the same or have the same effect
  • Figure 1 shows a perspective top view of a stator end 10, on which a first, second and third busbar 1, 2 and 3, according to the prior art, are electrically conductively connected to the corresponding first, second and third ring conductors 11, 12 and 13 .
  • the first, second and third ring conductors 11, 12 and 13 have two ends 15 protruding in the axial direction A, which are connected to the corresponding first, second and third busbars 1, 2 and 3 for electrical contacting.
  • the first, second and third ring conductors 11, 12 and 13 lead to the individual stator windings (not shown).
  • a decentralized star connection 14 is also assigned to the ring conductors 11, 12 and 13.
  • FIG. 2 shows an enlarged perspective view of the assignment of one of the busbars 1, 2 or 3 to the respective ring conductor 11, 12 or 13 according to the prior art.
  • FIG. 2 only the third ring conductor 13 is shown, which is connected to the third busbar 3.
  • Each of the busbars 1, 2 and 3 has a threaded bushing 6 in the area of a first end 4, with which electrical conductors (not shown) can be connected.
  • each of the busbars 1, 2 and 3 has surface elements 8 which also protrude in the axial direction A from the busbar 1, 2 or 3.
  • the busbars 1, 2 or 3 are connected to the two ends 15 of the ring conductors 11, 12 or 13, which also extend in the axial direction A, via the surface elements 8.
  • Figure 3 shows a perspective view of the electrically conductive connection of the third busbar 3 with the respective third ring conductor 13 according to the prior art.
  • the state of the art there are different ways of realizing the interconnection of the ring conductors 11, 12 and 13.
  • a common way, as shown here, is that the two ends 15 of a ring conductor 11, 12 or 13 (here the third ring conductor 13) are connected to the corresponding busbar 1, 2 or 3 (here the third busbar 3).
  • the two ends 15 of the third ring conductor 13 are connected to the surface elements 8 of the third busbar 3 via weld seams 16. This requires a high level of positioning accuracy, precise individual part tolerance and several welding or connection points.
  • FIG. 4 shows the configuration of a ring conductor 11, 12 or 13 as used in the present invention.
  • the two ends 15 are designed in such a way that they overlap in the circumferential direction U.
  • FIG. 5 shows a perspective view of the assignment and connection according to the invention of one of the busbars 1, 2 or 3 with the respective ring conductor 11, 12 or 13.
  • the two ends 15 of each ring conductor 11, 12 or 13 are connected to one another via a weld 16.
  • each of the ring conductors 11, 12 or 13 has an S-shaped section 20 (see FIG. 4) at each of the two ends 15.
  • both ends 15 can be placed one on top of the other and can be connected, for example, by a weld 16.
  • a weld 16 it goes without saying for a person skilled in the art that the possibility of a connection by means of a weld 16 is only one of several possibilities.
  • gluing with a conductive adhesive would also be conceivable, for example.
  • the second end 5 of the busbars 1, 2 or 3 is designed as a flat piece 9.
  • the flat piece 9 of the busbars 1, 2 or 3 can also be connected to the two connected ends 15 of the ring conductor 11, 12 or 13 by means of a weld 16.
  • Each of the busbars 1, 2 or 3 has an offset 7.
  • the threaded bush 6 at the first end 4 of the busbar 1, 2 or 3 is spaced apart from the ring conductors 11, 12 or 13 by a distance B in the axial direction A.
  • FIG. 6 shows a side view of a busbar 1, 2 or 3 which is connected to the ring conductor 11, 12 or 13 according to the invention.
  • FIG. 7 shows a side view of a busbar 1, 2 or 3 which is connected to the ring conductor 11, 12 or 13 according to the prior art. From the comparison of Figure 6 and FIG. 7 shows that the installation space in the area of the contact between the busbar 1, 2 or 3 with the ring conductor 11, 12 or 13 can be reduced considerably.
  • the flat piece 9 of the embodiment of the busbar 1, 2 or 3 according to the invention does not extend in the axial direction A (see FIG. 6), which saves installation space in the axial direction A.
  • the surface elements 8 extend in the axial direction A and consequently take up installation space in the axial direction A (see FIG. 7).

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

La présente invention concerne un contact électrique d'un stator de machine électrique. Trois conducteurs annulaires (11, 12, 13) sont disposés sur une extrémité de stator (10). L'une des barres omnibus (1, 2, 3) dans chaque cas est connectée de manière électroconductrice à l'un des conducteurs annulaires (11, 12, 13) par les extrémités (15) des conducteurs annulaires (11, 12, 13). Les extrémités (15) de chaque conducteur annulaire (11, 12, 13) se chevauchent dans la direction circonférentielle (U) et sont fixées l'une à l'autre. Une pièce plate (9) de la barre omnibus correspondante (1, 2, 3) est reliée aux extrémités se chevauchant (15).
PCT/DE2021/100301 2020-04-20 2021-03-26 Contact électrique d'un stator de machine électrique WO2021213583A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020110651.3A DE102020110651B4 (de) 2020-04-20 2020-04-20 Elektrische Kontaktierung eines Stators einer elektrischen Maschine
DE102020110651.3 2020-04-20

Publications (1)

Publication Number Publication Date
WO2021213583A1 true WO2021213583A1 (fr) 2021-10-28

Family

ID=75529711

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2021/100301 WO2021213583A1 (fr) 2020-04-20 2021-03-26 Contact électrique d'un stator de machine électrique

Country Status (2)

Country Link
DE (1) DE102020110651B4 (fr)
WO (1) WO2021213583A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116000430A (zh) * 2023-01-30 2023-04-25 优普锐创智(重庆)智能装备有限公司 一种扁线电机定子端部焊接装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022208482A1 (de) 2022-08-16 2024-02-22 Zf Friedrichshafen Ag Schaltring für eine elektrische Maschine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003199280A (ja) * 2001-12-28 2003-07-11 Toshiba Corp 回転電機の固定子
JP2006166680A (ja) * 2004-12-10 2006-06-22 Nissan Motor Co Ltd 回転電機のステータ構造
EP1739809A1 (fr) * 2005-06-29 2007-01-03 Sumitomo Wiring Systems, Ltd. Une barre omnibus pour un moteur sans balais, un moteur sans balais comprenant ladite barre omnibus et procédé d' assemblage
JP2008022626A (ja) * 2006-07-12 2008-01-31 Mitsubishi Electric Corp 回転機
DE102012214088A1 (de) * 2011-08-09 2013-02-14 Nidec Corp. Motor
US20130328425A1 (en) * 2012-06-07 2013-12-12 Hitachi Cable Fine-Tech, Ltd. Electric power collection and distribution ring, electric motor and method of manufacturing electric motor
CN104539111A (zh) * 2014-12-26 2015-04-22 山西汾西重工有限责任公司 导电环的连接方法
DE102014201637A1 (de) 2014-01-30 2015-07-30 Ovalo Gmbh Stromschiene für einen Stator, Stator, Elektromotor und Verfahren zum Herstellen eines Stators
EP3300218B1 (fr) 2016-09-22 2019-07-03 CPT Group GmbH Contact tournant, stator et moteur électrique
CN210167877U (zh) * 2019-08-07 2020-03-20 南京好龙电子有限公司 一种焊接式电机绕组端部连接结构

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5703604B2 (ja) 2010-03-03 2015-04-22 日本電産株式会社 バスバーユニット及びモータ
DE102014115379A1 (de) 2014-10-22 2016-04-28 Ebm-Papst St. Georgen Gmbh & Co. Kg Statorvorrichtung für einen Elektromotor und Verwendung einer solchen

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003199280A (ja) * 2001-12-28 2003-07-11 Toshiba Corp 回転電機の固定子
JP2006166680A (ja) * 2004-12-10 2006-06-22 Nissan Motor Co Ltd 回転電機のステータ構造
EP1739809A1 (fr) * 2005-06-29 2007-01-03 Sumitomo Wiring Systems, Ltd. Une barre omnibus pour un moteur sans balais, un moteur sans balais comprenant ladite barre omnibus et procédé d' assemblage
JP2008022626A (ja) * 2006-07-12 2008-01-31 Mitsubishi Electric Corp 回転機
DE102012214088A1 (de) * 2011-08-09 2013-02-14 Nidec Corp. Motor
US20130328425A1 (en) * 2012-06-07 2013-12-12 Hitachi Cable Fine-Tech, Ltd. Electric power collection and distribution ring, electric motor and method of manufacturing electric motor
DE102014201637A1 (de) 2014-01-30 2015-07-30 Ovalo Gmbh Stromschiene für einen Stator, Stator, Elektromotor und Verfahren zum Herstellen eines Stators
CN104539111A (zh) * 2014-12-26 2015-04-22 山西汾西重工有限责任公司 导电环的连接方法
EP3300218B1 (fr) 2016-09-22 2019-07-03 CPT Group GmbH Contact tournant, stator et moteur électrique
CN210167877U (zh) * 2019-08-07 2020-03-20 南京好龙电子有限公司 一种焊接式电机绕组端部连接结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116000430A (zh) * 2023-01-30 2023-04-25 优普锐创智(重庆)智能装备有限公司 一种扁线电机定子端部焊接装置
CN116000430B (zh) * 2023-01-30 2024-06-04 优普锐创智(重庆)智能装备有限公司 一种扁线电机定子端部焊接装置

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Publication number Publication date
DE102020110651B4 (de) 2021-11-04
DE102020110651A1 (de) 2021-10-21

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