WO2022160028A1 - Estator de máquina elétrica de fluxo axial - Google Patents
Estator de máquina elétrica de fluxo axial Download PDFInfo
- Publication number
- WO2022160028A1 WO2022160028A1 PCT/BR2022/050031 BR2022050031W WO2022160028A1 WO 2022160028 A1 WO2022160028 A1 WO 2022160028A1 BR 2022050031 W BR2022050031 W BR 2022050031W WO 2022160028 A1 WO2022160028 A1 WO 2022160028A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wound
- machine
- disc
- housing
- core
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 239000000306 component Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004412 Bulk moulding compound Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
-
- 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
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
-
- 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
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- 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
- H02K5/20—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
- H02K5/20—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
Definitions
- the present invention relates to an axial-flow electrical machine and, more specifically, to an axial-flow motor or generator.
- Axial flux electrical machines are widely known in the art, and basically comprise at least one stator and at least one disk-shaped rotor with permanent magnets in which the flux travels in the axial direction of the rotating axis of the machine. They can comprise both electric motors and electric generators.
- EP 2869433 A1 shows such a state-of-the-art machine, in which a support disc receives a series of coils mounted radially and equidistantly.
- the present invention relates to an axial flux electrical machine comprising a housing and an active core comprising at least one rotor and at least one wound stator, wherein the wound stator comprises a plurality of wound cores arranged in a disk of support.
- the support disk comprises a flat plate having an inner edge and an outer edge, the flat plate having a center hole and a plurality of wound core positioning holes, each of the wound core positioning holes being configured to receiving each of the plurality of wound cores.
- the support disc further comprises a plurality of peripheral indentations that extend spaced apart at an outer periphery of the disc, each of the peripheral indentations having an open outer end disposed at the outer edge of the disc, and an outer edge rounded closed interior.
- At least one peripheral cutout among the plurality of peripheral cutouts has an engagement portion formed at the open end configured to cooperate with a corresponding engagement portion formed at the inner surface of the housing.
- the support disc may further comprise a plurality of anchor holes for positioning and tying machine connection cables along the periphery of the disc.
- the housing is formed of a body part, a front cover and a back cover, wherein the locking portion is configured to cooperate with a corresponding locking portion formed on the inner surface of the housing part. carcass body.
- the support disc is positioned centrally with respect to the front and rear covers.
- the mortise portion is formed as two recesses, wherein each recess is formed on one side of the open end; and the corresponding engagement portion comprises a rectangular protrusion whose side edges fit into the recesses.
- the machine can further comprise at least one inlet orifice and at least one outlet orifice for coolant fluid, wherein the support disc can be positioned in correspondence with the at least one inlet and at least one outlet for coolant fluid of the carcass.
- each wound core of the plurality of wound cores is a split wound core formed by joining two wound core parts, wherein one of the two core parts comprises a male connection and the other of core comprises a female connection, and wherein each core part comprises at least one spacer element.
- Each of the core parts may further have, at at least one radial end, a recess which bears on a corresponding end edge of the positioning hole.
- Figure 1 - is a perspective view of an axial flow electric machine according to an embodiment of the present invention.
- Figure 2 - is a perspective sectional view of the housing of an axial flow electrical machine according to an embodiment of the present invention
- Figure 3 - is a perspective view of a stator component of an axial flow electrical machine according to an embodiment of the present invention.
- Figure 4 - is a perspective view of the assembly of a stator component of an axial flow electrical machine according to an embodiment of the present invention, the resin being removed;
- Figure 5 - is a top perspective view of an axial flow electric machine according to an embodiment of the present invention, the central part of the housing and the resin being removed;
- Figure 6 - is a front view of a support disk of an axial flow electric machine according to an embodiment of the present invention.
- Figure 7 - is an enlarged view of a portion of the support disc of an axial flow electric machine according to an embodiment of the present invention
- Figure 8 - is a sectional view of stator components of an axial-flow electrical machine according to an embodiment of the present invention, further showing a central part of the machine housing
- Figures 9a and 9b - are perspective views of two pairs of wound core components of an axial flow electrical machine in accordance with an embodiment of the present invention.
- Figure 1 shows an axial flux motor according to an embodiment of the present invention.
- the motor 1 comprises a frame 2 with a central through hole 3 and coolant fluid inlet and outlet holes 4.
- the through hole 3 is intended to receive an axle, however, it must It will be understood that, in other embodiments of the invention, the shaft could be integral to the motor.
- the housing 2 is formed by a body part 5, a front cover 6 and a rear cover 7.
- the housing could be formed differently, for example as a split housing, with the body part split, with each half integral with a respective closure cap.
- Figure 3 shows a perspective view of the wound stator of the motor according to an embodiment of the present invention.
- the figure shows a plurality of wound cores 9 surrounded by a resin 10.
- the resin is an epoxy resin of high thermal conductivity.
- the present invention would achieve equivalent effect with a suitable thermosetting material.
- the plurality of coiled cores 9 is mounted on a support disk 11, best illustrated in figures 4 to 8.
- the support disk assists in positioning the magnetic core, maintaining the plurality of cores correctly positioned during motor operation, and transmits touch to the motor housing.
- the support disk 11 is a central support disk.
- the disk 11 preferably comprises a circular plate with a central hole 12 and a plurality of positioning holes 13 of the magnetic core and coil assembly.
- the disc 11 further comprises a plurality of peripheral indentations 14, which extend spaced apart on the outer periphery of the disc.
- peripheral cutouts 14 have an open outer end 15, at the edge of the disk 11, and a rounded closed inner end 16.
- At least one peripheral cutout 14 among the plurality of peripheral cutouts 14 further has an engaging portion 17 formed at the open end 15.
- This locking portion 17 is configured to cooperate with a corresponding locking portion 18 formed on the inner surface of the body part 5 of the housing 2, as illustrated in Figure 8.
- the corresponding locking portion 18 could be formed in the corresponding region of the inner surface of that housing of another shape.
- the mortise portion 17 is formed as two corner recesses on each side of the open end 15.
- the corresponding mortise portion 18 is a rectangular protrusion whose side edges fit into the corner recesses.
- each corner recess 18 is a right-angled cutout to fit the edge of the rectangular protrusion.
- the mortise portions 17 and 18 could be configured in other shapes, the embodiment in which the recesses are formed in the disc 11 is preferred as it reduces the amount of material used in the manufacture. from the disk. In addition, shaping the recesses on disk 11 is easier to perform than on housing 2, which would require complex machining.
- the disk 11 of the present invention further comprises anchoring holes 20 for positioning and tying the machine cables 8 along the periphery of the disk (see figure 8).
- anchoring holes 20 for positioning and tying the machine cables 8 along the periphery of the disk (see figure 8).
- a string of high temperature resistant material is passed through the anchoring holes 20 and the cabling is tied in the central region between the holes 20.
- other fastening elements such as cable ties.
- holes 20 when not used for tying cables, allow the passage of resin 10 during the manufacture of the engine, resulting in a more efficient encapsulation process.
- the disc 11 is made of a non-electrically conductive material of low density, such as resin fiber, capable of withstanding high temperatures, such as, for example, more than 200°C without losing the structural properties and dielectric strength. It should be understood, however, that the disc 11 could be made of other suitable materials such as carbon fiber, BMC or polyamide.
- the support disc 11 in addition to ensuring the rigidity of the system, also assists in the engine cooling system according to the present invention.
- the support disc 11 is positioned in correspondence with the refrigerant inlet and outlet 4a and 4b, in such a way that the refrigerant fluid entering through the fluid inlet 4a is divided to both sides of disc 11 , front and rear sides of the engine. In this sense, in the illustrated embodiment of the present invention, the disc 11 is positioned centrally in relation to the covers 6 and 7.
- a cooling fluid is pumped to the engine, entering through inlet 4a, the fluid flows through channels of cooling present in the resin 10.
- the heated fluid will leave the engine through outlet 4b, where it will need to pass through a heat exchanger to dissipate the heat that was extracted from the engine to the environment.
- Closing plates can be used for axial closure of the wound core and containment of the cooling fluid.
- the rotor (not illustrated and of construction and operation known to those skilled in the art) is mounted axially spaced from a plate corresponding to the closing plates. Thus, each rotor is mounted at a distance from a respective closing plate.
- the plurality of wound cores are mounted on the disk 11 to form a wound core divided by the disk.
- each of the plurality of formed wound cores comprises two core parts 21, 22.
- One core part 21 comprises a male connection 23 and the other of core parts 22 comprises a female connection 24.
- the fixing of the two core parts 21, 22 is done through the male and female connections and by adhesive bonding, ensuring an improved connection.
- Each of the core parts 21, 22 has, at at least one radial end, a recess 27 that guarantees the correct positioning of the core part on the disc 11.
- the recess 27 forms a socket that rests on the edge from the corresponding end of the positioning hole 13.
- the recesses 27 are formed on the outer radial end of the core parts.
- the recesses 27 are formed at the inner radial end of the core parts.
- recesses 27 are formed at both the inner radial end and the outer radial end.
- each core part 21, 22 may comprise at least one spacer element 25, 26, which is responsible for providing an optimal spacing so that an optimal thickness of adhesive layer joining the parts is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/263,652 US20240063670A1 (en) | 2021-02-01 | 2022-01-31 | Axial flux electric machine |
EP22744949.3A EP4287473A1 (en) | 2021-02-01 | 2022-01-31 | Stator for axial-flux electric machine |
CN202280012680.1A CN116918227A (zh) | 2021-02-01 | 2022-01-31 | 轴向磁通电机的定子 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202163144223P | 2021-02-01 | 2021-02-01 | |
US63/144,223 | 2021-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022160028A1 true WO2022160028A1 (pt) | 2022-08-04 |
Family
ID=82652674
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2022/050030 WO2022160027A1 (pt) | 2021-02-01 | 2022-01-31 | Máquina elétrica de fluxo axial e método para montagem de um estator de uma máquina elétrica de fluxo axial |
PCT/BR2022/050031 WO2022160028A1 (pt) | 2021-02-01 | 2022-01-31 | Estator de máquina elétrica de fluxo axial |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2022/050030 WO2022160027A1 (pt) | 2021-02-01 | 2022-01-31 | Máquina elétrica de fluxo axial e método para montagem de um estator de uma máquina elétrica de fluxo axial |
Country Status (4)
Country | Link |
---|---|
US (2) | US20240063670A1 (pt) |
EP (2) | EP4287473A1 (pt) |
CN (2) | CN116830424A (pt) |
WO (2) | WO2022160027A1 (pt) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070210675A1 (en) * | 2006-03-13 | 2007-09-13 | Isca Innovations, Llc | Brushless electric motor |
US7345398B2 (en) * | 2005-06-20 | 2008-03-18 | Kurz-Kasch, Inc. | Electric motor stator |
EP2869433A1 (en) | 2013-10-30 | 2015-05-06 | SC BMEnergy SRL | Axial flux permanent magnet electrical machine with magnetic flux concentration |
US9071117B2 (en) * | 2009-02-13 | 2015-06-30 | Isis Innovation Ltd. | Electric machine—flux |
DE102019125871A1 (de) * | 2019-09-25 | 2021-03-25 | Schaeffler Technologies AG & Co. KG | Axialflussmaschine |
GB2585357B (en) * | 2019-05-10 | 2022-03-09 | Yasa Ltd | Stator for axial flux machine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201013881D0 (en) | 2010-08-19 | 2010-10-06 | Oxford Yasa Motors Ltd | Electric machine - construction |
KR101999860B1 (ko) | 2013-03-28 | 2019-07-12 | 현대모비스 주식회사 | 하우징어셈블리 및 축방향자속모터 |
GB2525157B (en) * | 2014-02-18 | 2016-08-24 | Yasa Motors Ltd | Machine cooling systems |
IT201800003388A1 (it) | 2018-03-08 | 2019-09-08 | Texa Dynamics S R L | “Componente di raffreddamento per motore elettrico” |
CN109904948A (zh) * | 2018-07-17 | 2019-06-18 | 苏州保邦电气有限公司 | 绕组水冷超轻型轴向磁通电机 |
EP3764526A1 (en) * | 2019-07-10 | 2021-01-13 | Magnax Bv | Cooling mechanism of a stator for an axial flux machine |
CN112953120B (zh) * | 2021-01-25 | 2023-01-03 | 中国第一汽车股份有限公司 | 一种电机冷却系统、冷却方法和电机 |
CN113964966B (zh) * | 2021-10-28 | 2023-03-10 | 中国第一汽车股份有限公司 | 一种定子组件及其制造方法、轴向磁通电机 |
-
2022
- 2022-01-31 WO PCT/BR2022/050030 patent/WO2022160027A1/pt active Application Filing
- 2022-01-31 CN CN202280012678.4A patent/CN116830424A/zh active Pending
- 2022-01-31 EP EP22744949.3A patent/EP4287473A1/en active Pending
- 2022-01-31 EP EP22744948.5A patent/EP4287462A1/en active Pending
- 2022-01-31 CN CN202280012680.1A patent/CN116918227A/zh active Pending
- 2022-01-31 US US18/263,652 patent/US20240063670A1/en active Pending
- 2022-01-31 US US18/263,643 patent/US20240097522A1/en active Pending
- 2022-01-31 WO PCT/BR2022/050031 patent/WO2022160028A1/pt active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7345398B2 (en) * | 2005-06-20 | 2008-03-18 | Kurz-Kasch, Inc. | Electric motor stator |
US20070210675A1 (en) * | 2006-03-13 | 2007-09-13 | Isca Innovations, Llc | Brushless electric motor |
US9071117B2 (en) * | 2009-02-13 | 2015-06-30 | Isis Innovation Ltd. | Electric machine—flux |
EP2869433A1 (en) | 2013-10-30 | 2015-05-06 | SC BMEnergy SRL | Axial flux permanent magnet electrical machine with magnetic flux concentration |
GB2585357B (en) * | 2019-05-10 | 2022-03-09 | Yasa Ltd | Stator for axial flux machine |
DE102019125871A1 (de) * | 2019-09-25 | 2021-03-25 | Schaeffler Technologies AG & Co. KG | Axialflussmaschine |
WO2021058052A1 (de) | 2019-09-25 | 2021-04-01 | Schaeffler Technologies AG & Co. KG | Axialflussmaschine |
Also Published As
Publication number | Publication date |
---|---|
US20240097522A1 (en) | 2024-03-21 |
EP4287462A1 (en) | 2023-12-06 |
CN116830424A (zh) | 2023-09-29 |
EP4287473A1 (en) | 2023-12-06 |
CN116918227A (zh) | 2023-10-20 |
US20240063670A1 (en) | 2024-02-22 |
WO2022160027A1 (pt) | 2022-08-04 |
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