EP3117502A2 - Machine electrique tournante - Google Patents
Machine electrique tournanteInfo
- Publication number
- EP3117502A2 EP3117502A2 EP15714248.0A EP15714248A EP3117502A2 EP 3117502 A2 EP3117502 A2 EP 3117502A2 EP 15714248 A EP15714248 A EP 15714248A EP 3117502 A2 EP3117502 A2 EP 3117502A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- core
- machine according
- axis
- electric machine
- 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- Withdrawn
Links
- 238000004804 winding Methods 0.000 claims abstract description 64
- 239000007858 starting material Substances 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/52—Motors acting also as generators, e.g. starting motors used as generators for ignition or lighting
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- the present invention relates in particular to a rotating electrical machine, reversible or not, including a starter motor vehicle.
- the starters comprise an inductance rotor and an inductor stator mounted coaxially.
- the rotor is integral with a motor shaft rotating inside a cylinder head.
- the stator has a plurality of magnetic poles disposed on an inner circumferential surface of the yoke and constituted by poles around which inductor wires are wound, the assembly constituting a wound inductor.
- a wound inductor can be of complex construction and require expensive raw materials such as copper. Copper is used in wound inductors for good electrical conductivity. The use of other less expensive materials to replace the copper would be possible provided that the decrease in electrical performance can be compensated for.
- the invention aims to reduce the costs of electrical machines without degrading the performance of these machines.
- the subject of the invention is in particular a rotating electrical machine, in particular for a starter of a motor vehicle, this machine having an axis of rotation and comprising a stator comprising:
- an inductive winding in particular a concentric winding, comprising at least one wire comprising aluminum
- the wire comprising aluminum replaces the copper wire commonly used.
- the use of wire with aluminum instead of copper wire has the effect of reducing material costs. Decreasing the electrical resistance and decreasing the length of the wire make it possible to obtain starting powers similar to those obtained by using copper.
- the use of a polar mass whose polar core has a modified geometry has the effect of reducing the section of this polar core. This reduces the length of wire wrapped around the pole core to decrease electrical resistance. In other words, the invention achieves a satisfactory compromise.
- the winding is a concentric winding.
- Each coil core may be surrounded by a plurality of concentric turns.
- the machine is arranged to operate with a supply voltage of 12V and:
- the winding is arranged in 2 parallel ways and each winding core is surrounded by 4 turns of the winding, or
- the winding is arranged in 4 parallel channels and each winding core is surrounded by 8 turns of the winding.
- the machine is arranged to operate with a supply voltage of 24V and:
- the winding is arranged in 2 parallel ways and each winding core is surrounded by 8 turns of the winding, or the winding is arranged in 4 parallel channels and each winding core is surrounded by 16 turns of the winding.
- the machine is arranged to operate with a supply voltage of 48V and:
- the winding is arranged in 2 parallel ways and each winding core is surrounded by 16 turns of the winding, or
- the winding is arranged in 4 parallel channels and each winding core is surrounded by 32 turns of the winding.
- Each turn of the inductor winding can be formed from a single wire in hand or several son in hand.
- the turn is formed by winding a single wire around the winding core, this wire then preferably having, along the turn, a cross section with at least one flat.
- the turn is formed by winding several wires simultaneously around the winding core.
- the invention makes it possible, surprisingly, to reduce the number of turns per polar mass while simultaneously satisfying the requirements of torque and electrical resistance.
- removing for example a turn ensures a correct level of torque that is a function of the section of iron and ampere-turns, because in the same space available, remove a turn of 5 can significantly increase the section of wire, to the point of being able to pass from copper to aluminum with the same useful power, because of the same resistance.
- the machine comprises an armature, the length of the armature measured along the axis of rotation being greater than or equal to the length of the polar mass measured along the axis of rotation. This maximizes the surface of the armature from an electromagnetic point of view without increasing the electrical resistance of the device.
- the length of the polar mass is greater than or equal to 90% of the length of the armature, in particular 95%, preferably 97%.
- the length of the armature is between 30 and 40 mm, and is notably substantially equal to 35 mm.
- the length of the polar mass is between 30 and 40 mm and is in particular substantially equal to 34 mm.
- the periphery of the polar core has, when observed along the axis of observation, an elongate shape along the axis of rotation.
- the periphery of the polar core has a shape comprising two straight line segments, preferably parallel, interconnected by two curve portions. This has the effect of establishing a compromise between section, core and wire length of the inductor winding. Where appropriate, at least one of the portions of the curve corresponds to an arc of a circle.
- the periphery of the polar core has an elliptical shape when observed along the observation axis perpendicular to the axis of rotation.
- This geometry is an alternative to the perimeter of the polar core having two straight line segments, preferably parallel, interconnected by two portions of the curve.
- the perimeter of the polar core has a circular shape when observed along the observation axis perpendicular to the axis of rotation.
- the polar mass comprises a development connecting to the core and disposed radially inward with respect to the core.
- the expansion has a substantially rectangular shape when observed along the observation axis perpendicular to the axis of rotation.
- the expansion has a greater extent than that of the core when observed along the observation axis perpendicular to the axis of rotation.
- the length of the expansion measured along the axis of rotation is substantially equal to the length of the core.
- the expansion has a larger circumferential dimension than that of the core.
- the machine may, if desired, have a number of pairs of polar masses equal to at least 2 or more.
- the polar core is fixed on a stator yoke by screwing. This allows simple assembly and disassembly of the polar core.
- the polar mass comprises a recess passing through in the radial direction, this recess serving to screw the polar mass on a cylinder head.
- This allows the passage of a fastening element such as a clamping screw.
- the polar core is fixed on the stator yoke by crimping.
- the thickness of the polar core measured in the radial direction is between 5 and 8 mm, in particular between 6 and 7 mm, preferably being 6.5 mm.
- the machine may, if desired, include winding wire having on at least a portion of its length, a cross section with at least one flat. This makes it easier to fill the winding wire around the polar core.
- the inductor winding comprises at least one turn of wire of circular section wound around a core of a polar mass of the stator.
- the wire comprises a copper-coated aluminum core. This improves the corrosion resistance of aluminum.
- the machine forms a motor vehicle starter, the starter being simple to know without capacity to operate alternator or, alternatively, capable of operating alternator.
- FIG. 1 represents, schematically and partially, a section of the electric machine according to the invention
- FIG. 2 represents a polar mass of the machine of FIG. 1, mass observed along an observation axis perpendicular to the axis of rotation,
- FIG. 3 represents a polar mass according to another embodiment of the invention observed along the observation axis perpendicular to the axis of rotation, and
- FIG. 4 illustrates, schematically and partially, a section showing a portion of an electric machine according to another embodiment of the invention.
- FIG. 1 diagrammatically shows a starter 1 for a motor vehicle combustion engine.
- This DC starter 1 comprises a stator 2a, or inductor, comprising a yoke 2 on which polar masses 3 are fixed, and a winding 4 formed of conducting wires 4a wound on these polar masses 3.
- This starter 1 also comprises a rotor 5, also called armature, rotatable about an axis of rotation X, inside the stator 2a.
- the rotor 5 comprises notches 51 which comprise wound lead wires not shown in FIG. 1.
- the length Lr of the rotor 5 measured along the axis of rotation X is greater than the length Ls of the polar mass measured along the X axis so as to make the most of the surface of the rotor. electromagnetically induces without increasing the electrical resistance of the apparatus.
- the length of the polar mass measured along the X axis is greater than 90% of the length of the armature.
- the length Lr of the rotor 5 is 35mm and the length Ls is 34mm.
- the polar mass 3 comprises a core 31 and a blooming 32.
- the core 31 has a periphery 31 1 having an elongated shape along the axis of rotation X.
- the periphery 31 1 of the core 31 has a shape having two parallel segments 312, interconnected by two curve portions 313 and at least one curve portions substantially corresponding to an arc.
- the periphery 31 1 of the core 31 has a generally elliptical shape when observed along the observation axis perpendicular to the axis of rotation X, with two parallel straight segments 315.
- the periphery 31 1 of the polar core 31 has a circular shape when observed along the observation axis perpendicular to the axis of rotation X.
- the expansion 32 is connected to the core 31 and is arranged radially inward with respect to the core 31.
- the expansion 32 has a substantially rectangular shape when observed along the observation axis perpendicular to the axis of rotation X and has a greater extent than that of the core 31 when observed along the observation axis perpendicular to the axis of rotation X.
- the expansion 32 also has a larger circumferential dimension than that of the core 31.
- the machine comprises a number of pairs of polar masses 3 equal to 2.
- the core 31 is fixed on the yoke 2 of the stator by screwing. This allows simple mounting and dismounting of the core 31.
- the polar mass 3 comprises a recess 33 passing in the radial direction, this recess serving to screw the polar mass on a cylinder head. This recess allows the passage of a fixing screw for screwing on the yoke 2 of the stator.
- the core 31 is fixed on the yoke 2 of the stator by crimping.
- the thickness of the core 31 measured in the radial direction is 6.5mm.
- the machine 1 comprises an inductor winding 4 whose wire has on at least a part of its length, a cross section with at least one flat part 41.
- the winding is arranged in 2 parallel tracks and each winding core 31 is surrounded by 4 turns of the winding.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1452046A FR3018642B1 (fr) | 2014-03-12 | 2014-03-12 | Machine electrique tournante |
| PCT/FR2015/050460 WO2015136176A2 (fr) | 2014-03-12 | 2015-02-26 | Machine electrique tournante |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3117502A2 true EP3117502A2 (fr) | 2017-01-18 |
Family
ID=51483509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15714248.0A Withdrawn EP3117502A2 (fr) | 2014-03-12 | 2015-02-26 | Machine electrique tournante |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170018983A1 (fr) |
| EP (1) | EP3117502A2 (fr) |
| CN (1) | CN106063082A (fr) |
| FR (1) | FR3018642B1 (fr) |
| WO (1) | WO2015136176A2 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017208036A1 (de) * | 2017-05-12 | 2018-11-15 | Robert Bosch Gmbh | Stator |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877142A (en) | 1970-12-27 | 1975-04-15 | Nippon Denso Co | Method of making a rotary electric machine especially suitable for use as a starter for automotive vehicle engines |
| JPH04167799A (ja) * | 1990-10-30 | 1992-06-15 | Matsushita Electric Ind Co Ltd | スピーカ用ボイスコイル |
| JP2004153977A (ja) * | 2002-11-01 | 2004-05-27 | Hitachi Ltd | モータ |
| JP3652348B2 (ja) * | 2002-11-26 | 2005-05-25 | 株式会社モステック | コイル、線材、線材の製造方法、線材の製造装置 |
| WO2005107039A1 (fr) * | 2004-04-30 | 2005-11-10 | Sumitomo Electric Industries, Ltd. | Noyau a poudre de fer et son procede de fabrication |
| DE102004039180A1 (de) * | 2004-08-12 | 2006-02-23 | Robert Bosch Gmbh | Hauptelement für eine elektrische Maschine |
| JP4887656B2 (ja) * | 2004-10-29 | 2012-02-29 | トヨタ自動車株式会社 | 回転電機およびそれを搭載した自動車 |
| FR2890798A1 (fr) * | 2005-09-13 | 2007-03-16 | Valeo Equip Electr Moteur | Stator de machine electrique tournante polyphasee du type alternateur ou alterno-demarreur |
| JP2007135360A (ja) * | 2005-11-11 | 2007-05-31 | Sumitomo Electric Ind Ltd | モータコア部品及びモータ部品 |
| US7589440B2 (en) * | 2005-11-25 | 2009-09-15 | Nidec Servo Corporation | Stepping motor |
| CN201004569Y (zh) * | 2006-09-12 | 2008-01-09 | 刘本成 | 一种复合电磁材料起动机 |
| DE102007058911A1 (de) * | 2007-11-30 | 2009-06-04 | Robert Bosch Gmbh | Elektrische Maschine |
| US7977841B2 (en) * | 2007-12-17 | 2011-07-12 | Tai-Her Yang | Electric machinery with a conduction winding excited magnetic poles wraps PM magnetic pole |
| DE102008033604B4 (de) * | 2008-07-17 | 2011-04-07 | Sew-Eurodrive Gmbh & Co. Kg | Elektromotor |
| US8847522B2 (en) * | 2008-11-14 | 2014-09-30 | Denso Corporation | Reluctance motor with improved stator structure |
| FR2941106B1 (fr) * | 2009-01-15 | 2017-01-20 | Valeo Equip Electr Moteur | Machine electrique tournante a poles saillants |
| FR2941105B1 (fr) * | 2009-01-15 | 2016-01-01 | Valeo Equip Electr Moteur | Machine electrique tournante,en particulier pour un demarreur de vehicule automobile |
| CN201717757U (zh) * | 2010-06-12 | 2011-01-19 | 广东美芝制冷设备有限公司 | 高效异步电动机 |
| CN202004555U (zh) * | 2011-03-02 | 2011-10-05 | 宁波贞观电器有限公司 | 一种新型电机绕组 |
| JP5562307B2 (ja) * | 2011-08-30 | 2014-07-30 | 日立オートモティブシステムズ株式会社 | かご形回転子および回転電機 |
| KR20150064033A (ko) * | 2012-09-25 | 2015-06-10 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | 하이브리드 차량용 트랜스미션 조립체의 사전조립 모듈 및 트랜스미션 조립체 장착 방법 |
| US9470442B2 (en) * | 2013-06-25 | 2016-10-18 | Mcogen, Inc. | Power generation system and method |
| US20160365782A1 (en) * | 2013-08-09 | 2016-12-15 | Johnson Electric S.A. | Motor and method for using and making the same |
-
2014
- 2014-03-12 FR FR1452046A patent/FR3018642B1/fr not_active Expired - Fee Related
-
2015
- 2015-02-26 US US15/124,819 patent/US20170018983A1/en not_active Abandoned
- 2015-02-26 EP EP15714248.0A patent/EP3117502A2/fr not_active Withdrawn
- 2015-02-26 CN CN201580010071.2A patent/CN106063082A/zh active Pending
- 2015-02-26 WO PCT/FR2015/050460 patent/WO2015136176A2/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2015136176A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015136176A2 (fr) | 2015-09-17 |
| CN106063082A (zh) | 2016-10-26 |
| FR3018642B1 (fr) | 2017-08-25 |
| US20170018983A1 (en) | 2017-01-19 |
| WO2015136176A3 (fr) | 2016-06-02 |
| FR3018642A1 (fr) | 2015-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20160919 |
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| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LABBE, NICOLAS Inventor name: ANDREUX, RAPHAEL |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ANDREUX, RAPHAEL Inventor name: LABBE, NICOLAS |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20190613 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20191024 |