EP4331081A1 - Stator pour machine à flux axial et procédé de fabrication d'un tel stator - Google Patents
Stator pour machine à flux axial et procédé de fabrication d'un tel statorInfo
- Publication number
- EP4331081A1 EP4331081A1 EP22726094.0A EP22726094A EP4331081A1 EP 4331081 A1 EP4331081 A1 EP 4331081A1 EP 22726094 A EP22726094 A EP 22726094A EP 4331081 A1 EP4331081 A1 EP 4331081A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- tooth
- teeth
- support part
- casing
- 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.)
- Pending
Links
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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
- H02K15/022—Magnetic cores 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
- H02K1/12—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
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles
Definitions
- the present invention generally relates to electrical machines with axial flux.
- the invention also relates to a stator obtained by such a manufacturing process as well as an engine and a motor vehicle comprising such a stator.
- a conventional stator of an axial flux electric machine comprises a body with a generally annular base and teeth distributed circumferentially on one of the end faces of the base.
- a stator also includes coils of conductive wire arranged around the teeth. Under the effect of electric currents, the coils generate magnetic fields allowing the stator to set the rotor in motion.
- the body of the stator is made by winding a metal sheet around a longitudinal axis.
- This metal sheet winding makes it possible to limit the eddy currents flowing through the stator when the latter is in operation and, consequently, to reduce the energy losses by heating.
- the teeth have a generally parallelepipedal shape which facilitates the winding of the conductive wire around each tooth.
- This configuration facilitates the industrial manufacture of the stator, since the space between the teeth is large enough to wind the conductor wire without difficulty.
- the use of such a form of teeth involves a degradation of the electrical properties of the electrical machine.
- the teeth widen at their free ends, which improves the circulation of the magnetic fields.
- the conductive wire forming the coil must be introduced between the teeth, in a very narrow slot. This step is not easy to implement in a industrial process.
- the third known method aims to improve this second method. For this, after winding the metal sheet forming the stator body and the teeth, the teeth are cut from the stator body. The coils are then formed, individually, around each of the teeth. The teeth are finally replaced on the stator body. As a variant, the teeth are each produced separately by stacking magnetic laminations cut, wound and then assembled on a stator body.
- the present invention proposes to improve the manufacturing method of the stator in order to form a robust stator in which the teeth are arranged so as to optimize the magnetic and electrical properties of the stator.
- the invention provides a method for manufacturing a stator for an axial flux electric machine, said stator comprising a stator body, a plurality of teeth and at least one coil formed of an electrically conductor, each tooth being formed of a first upper part and a second lower part, the method comprising the steps of:
- a support part is formed in order to position, precisely, the teeth in orientation and in spatial position.
- the assembly formed by the support part, the teeth and the coils of electrically conductive wire is then fixed on the stator body then allowing a precise alignment of the teeth. This arrangement then allows optimization of the magnetic and electrical properties of the stator.
- each tooth in a corresponding opening of the support part, each opening being shaped to receive each tooth in said precise posture;
- each tooth is fixed by gluing to the support part
- the support part and said casing are made of polymer material
- the invention also relates to a stator obtained by the manufacturing process described above.
- the invention also relates to a stator casing comprising a stator as defined above and a base receiving the stator, said base comprising a bottom wall and side walls so as to form a cooling chamber.
- a polymer material is for example molded around the stator in the cooling chamber.
- the invention also relates to a motor comprising a rotor and a stator as defined previously, as well as a motor vehicle comprising such a motor.
- a motor comprising a rotor and a stator as defined previously, as well as a motor vehicle comprising such a motor.
- the different characteristics, variants and embodiments of the invention can be associated with each other according to various combinations insofar as they are not incompatible or exclusive of each other.
- Figure 1 shows a schematic front perspective view of a stator according to the invention
- Figure 2 shows a schematic rear perspective view of the stator of Figure 1;
- FIG. 3 represents, in the form of a flowchart, a first example of a method for manufacturing a stator in accordance with the invention
- FIG. 4 schematically represents a sectional view of the product obtained during step E2 of a first example of the stator manufacturing process
- FIG. 5 schematically represents a sectional view of the product obtained during step E4 of the first example of the stator manufacturing process
- FIG. 6 schematically represents a sectional view of the product obtained during step E8 of the first example of the stator manufacturing process
- FIG. 7 schematically represents a cross-sectional view of the product obtained during step E10 of the first example of the stator manufacturing process
- FIG. 8 represents, in the form of a flowchart, a second example of a process for manufacturing a stator in accordance with the invention
- FIG. 9 schematically represents a cross-sectional view of the product obtained during step E22 of a second example of the stator manufacturing process
- FIG. 10 schematically represents a cross-sectional view of the product obtained during step E24 of the second example of the method for manufacturing the stator
- FIG. 11 schematically represents a cross-sectional view of the product obtained during the step E26 of the second example of the stator manufacturing method
- FIG. 12 schematically represents a sectional view of the product obtained during step E28 of the second example of the stator manufacturing method
- FIG. 13 schematically represents a motor vehicle equipped with an engine comprising a stator according to the invention
- Figure 14 shows a schematic perspective view of a first example of cooperation between a tooth and the upper face of a stator body
- Figure 15 shows a schematic perspective view of a second example of cooperation between a tooth and the upper face of the stator body
- FIG. 16 schematically represents a cross-sectional view of a stator casing comprising a stator according to the invention.
- stator 1 for an axial flux electric machine.
- the stator 1 comprises a body 2 of the stator 1, a plurality of teeth 5, a support part 7 of the plurality of teeth 2 and at least one coil 9 formed from an electrically conductive wire (not visible in the figures 1 and 2).
- the body 2 of stator 1 has the shape of a flattened ring, of height less than its diameter.
- the body 2 of stator 1 has a flat upper face 22, a flat lower face 24, an outer peripheral face 25 and an inner peripheral face, both cylindrical of revolution.
- the body 2 of the stator 1 is made of magnetic material. It is, for example, made by stacking steel sheets with a thickness less than or equal to half a millimeter. These sheet metal plates are here curved and spirally wound around an axis L orthogonal to the plane of the upper 22 and lower 24 faces. They extend over the entire height of the body 2 of the stator 1. Thus, the losses in the stator due to eddy currents are limited.
- the stator 1 also comprises the plurality of teeth 5.
- This plurality of teeth 5 is evenly distributed on the upper face 22 of the body 2 of the stator 1 all around the axis L (FIGS. 1 and 2).
- each tooth 5 generally has the shape of a right prism, of trapezoidal section (in a plane parallel to the upper face 22 of the body 2 of the stator 1).
- the faces side opposite the neighboring teeth 5 are here parallel to each other.
- Each tooth 5 here has a first part 52, or distal part 52 in the following, and a second part 54, or proximal part 54 in the following description ( Figure 4).
- the proximal part 54 of each tooth 5 is attached to the upper face 22 of the body 2 of stator 1.
- each end of the proximal part 54 of each tooth 5 is fixed by gluing on the upper face 22 of the body 2 of stator 1.
- the cooperation between the proximal part 54 of each tooth 5 and the upper face 22 of the body 2 of stator 1 can also be achieved by interlocking each tooth 5 on the upper face 22 of the body 2 of stator 1. More specifically, the end of the proximal part 54 of each tooth 5 has a shape complementary to a part of the upper face 22 of the body 2 of stator 1.
- the end of the proximal part 54 of each tooth 5 has a projecting part 540 intended to cooperate, for example by interlocking, with a groove 542, formed on the face upper 22 of the body 2 of the stator 1, and having a shape complementary to the projecting part 540.
- This groove can have a V-shaped dihedral section (FIG. 15) or a U-shaped section whose bottom has a V-shape (figure 14).
- This shape has the advantage of improving the passage of the magnetic flux between the base of the tooth and the part of the yoke located between two teeth, in particular when the tooth is made of sheet metal with axially magnetically oriented grains and when the yoke is made in sheet metal with magnetically oriented angular grains as for example in the document W02020/078667.
- the cooperation between the proximal part 54 of each tooth 5 and the upper face 22 of the body 2 of the stator 1 can be achieved by a combination of gluing and interlocking of each tooth 5 on the upper face 22 of the body 2 of the stator 1 previously described.
- each tooth 5 has, at least on one side, a projecting rib 55.
- two projecting ribs 55 are formed on either side of each tooth 5, in the extension of the end of the distal part 52 of each tooth 5.
- the projecting rib 55 of a tooth 5 is facing the projecting rib 55 of the adjacent tooth 5.
- the teeth 5 are positioned in a support part 7.
- This support part 7 also has here a flattened ring shape (FIGS. 1 and 2).
- the support part 7 is shaped to support each tooth 5 in a precise posture, at least when these teeth 5 are assembled on the body 2 of the stator 1.
- the term "precise posture” means a positioning of each tooth 5 relative to the other teeth in a predefined spatial position, stable, and according to a predetermined orientation.
- the use of this support part 7 therefore allows a precise arrangement of the teeth 5, relative to each other, on the body 2 of the stator 1. This makes it possible to guarantee the magnetic properties of the assembly of the stator 1 by limiting the losses due to misalignment and improper positioning of the teeth 5 relative to each other.
- the support part 7 is preferably made of an electrically insulating material. It is for example molded in polymer material.
- each tooth 5 is provided to be surrounded by an envelope 30 formed of electrically insulating material.
- this casing is molded in a polymer material.
- the support part 7 and the casing 30 are formed in one piece by molding.
- the support part 7 and the casing 30 are formed in two separate parts.
- each casing 30 is intended to surround the proximal part 54 of the tooth 5 concerned.
- the stator 1 finally comprises coils 9 formed of electrically conductive son. As shown in Figures 7, 11 and 12, an electrically conductive wire is wound around each casing 30 formed around the teeth 5 so as to form the coils 9.
- the electrically conductive wire is for example a copper wire.
- the coils are in practice electrically connected to an electrical connection unit 90 (FIG. 16).
- the stator 1 according to the invention is intended to be used in an engine 110 (also comprising a rotor) of a motor vehicle 100 (FIG. 13).
- FIG. 16 represents an example of a stator casing 200 into which the stator 1 is inserted.
- the stator casing 200 comprises a base 202 receiving the stator 1.
- This base 202 here has a bottom wall 204 and two side walls 205, 206 extending from bottom wall 204.
- the underside of the body 2 of the stator is fixed to the bottom wall 204 of the stator casing 200, for example by gluing.
- the support part 7 is positioned in the base 202 so as to form an internal chamber 80 closed.
- the walls of the internal chamber 80 are formed by the bottom wall 204 of the base 202, by the side walls 205, 206 of the base 202 and the support part 7 of the stator 1. (not visible in the figures) positioned between the support part 7 and the side walls 205, 206 of the base 202 make it possible to ensure the tightness of the internal chamber 80.
- the internal chamber 80 can advantageously form a cooling chamber.
- the base 202 includes inlet 220 and outlet 225 openings allowing the circulation of a cooling liquid.
- This cooling liquid is for example a dielectric cooling liquid such as oil.
- the cooling liquid can then circulate between the coils 9 surrounding the teeth 5 and thus allow the cooling of the stator 1 without including complex systems of channels in the body of each tooth.
- the stator casing 200 also comprises a bottom element 230 positioned opposite the bottom wall 204 of the base 202, outside the base 202. This bottom element 230 then makes it possible to form a closed outer chamber 85. Seals (not visible in the figures) positioned between the bottom element 230 and the bottom wall 204 of the base 202 make it possible to guarantee the tightness of the outer chamber 85.
- the outer chamber 85 can form another cooling chamber of the stator casing 200.
- supply and discharge openings (not shown) of a cooling liquid are provided between the bottom element 230 and the bottom wall 204 of the base 202.
- the cooling liquid here is water or oil.
- the internal chamber 80 can be filled with a polymer material to allow cooling.
- the polymer material is for example molded around the stator (1) in the internal chamber 80 formed in the stator casing 200.
- FIG. 3 represents, in the form of a flowchart, a first example of the method for manufacturing the stator 1.
- the method begins at step E2. During this step, the teeth 5 are positioned in preformed notches 75 of a mold 70 for manufacturing the support part 7 (FIG. 4).
- each notch 75 has dimensions slightly greater than those of the proximal part 54 of the tooth 5 concerned, thus forming a small clearance between the side faces of each tooth 5 and the side walls of the notch 75 concerned.
- step E4 the support part 7 and the envelope 30 are formed. They are, in this first example, formed in one piece by molding. In practice, the polymer material is poured into the manufacturing mold 70 .
- the polymer material is introduced between the side faces of the teeth 5 and the side walls of the notches 75, then forming the envelope 30 around the proximal part 54 of each tooth 5.
- the polymeric material does not entirely cover the proximal part 54 of each tooth 5.
- the insulating envelope 30 has openings 32. These openings 32 come for example from the positioning means which hold the teeth 5 in position during the manufacturing process (for example during the introduction of the polymer material).
- the polymer material extending between each of the distal parts 52 of each tooth 5 forms the support part 7.
- the support part 7 is then in the form of a plate connecting between them the projecting ribs 55 of the teeth 5.
- step E4 the support part 7 is obtained in which the teeth 5 are each positioned in a precise posture and the envelope 30, formed of electrically insulating material and surrounding each proximal part 54 of each tooth 5.
- step E6 the assembly formed by the support part 7, the teeth 5 and the casing 30 is extracted from the manufacturing mold 70.
- step E8 (FIG. 6), during which the electrically conductive wire is wound around each casing 30 formed at step E4 so as to obtain the coils 9.
- the electrically conductive wire is wound, for example in a single piece, around the casing 30.
- step E10 during which the assembly formed by the support part 7, the teeth 5, casing 30 and coils 9 are fixed to body 2 of stator 1. More particularly, each free end of the proximal parts 54 of each tooth 5 is attached to upper face 22 of body 2 of stator 1.
- the fixing is here carried out by gluing.
- the fixing can be achieved by fitting the proximal part 54 of each tooth 5 onto the upper face 22 of the body 2 of the stator 1 or by any other suitable method.
- step E 10 the stator 1 is assembled and formed (FIG. 7).
- FIG. 8 represents, in the form of a flowchart, a second example of the method for manufacturing the stator 1.
- the method begins at step E20 for obtaining the support part 7.
- the support plate 7 is made independently of the teeth 5. It is by example formed, by molding in polymer material, from another manufacturing mold (not represented). This other manufacturing mold notably allows the formation of openings 17 (FIG. 9) each intended to receive a tooth 5.
- the support part 7 obtained therefore comprises as many openings 17 as there are teeth 5.
- These openings 17 are shaped to allow the positioning of each of the teeth 5 in a precise posture as defined above.
- the opening 17 has a shape complementary to the distal part 52 of the tooth 5 then allowing this distal part 52 to be supported.
- each tooth 5 is placed in the corresponding opening 17 of the support part 7 (FIG. 9). More specifically, the edges of each opening 17 are intended to cooperate with the distal part 52 of each tooth 5, and in particular with the projecting ribs 55 of each tooth 5.
- each tooth 5 (via its distal part 52) is fixed by gluing to the edges of the corresponding opening 17 of the support part 7.
- this fixing can be achieved by interlocking or any other means of appropriate cooperation.
- the manufacturing method comprises step E24 during which the casing 30 is formed from an electrically insulating material.
- the casing 30 is here formed separately from the support part 7.
- the casing 30 is for example formed by means of a specific manufacturing mold (not shown) by molding in polymeric material.
- the envelope 30 is also shaped here to surround the proximal part 54 of each tooth 5.
- the casing 30 may (or may not) have openings 32 in its side parts. [0088] Once the casing 30 has been formed, the electrically conductive wire is wound around it in order to form the coil 9 (FIG. 10).
- steps E22 and E24 on the one hand is formed the part of the support 7 in which the teeth 5 are positioned in a precise posture and, on the other hand, the envelope 30 is formed. (made of electrically insulating material) wound with electrically conductive wire.
- Step E26 then allows the positioning of the casing 30 provided with the electrically conductive wire on the proximal part 54 of each tooth 5 (FIG. 11).
- the assembly of the casing 30 provided with the electrically conductive wire on the proximal part 54 of each tooth 5 is for example made by snap-fastening or by gluing.
- step E28 (similar to step E10 described previously).
- the assembly formed by the support part 7, the teeth 5, the casing 30 and the coils 9 is fixed to the body 2 of the stator 1.
- step E28 the stator 1 is assembled and formed (part of which is shown in FIG. 12).
- the envelope As a variant, it would have been possible for the envelope to be simply formed from a sheet of insulating paper.
- Finalization steps such as for example the varnishing of the assembly formed by the various elements of the stator, can be provided following the manufacturing process of the stator 1.
- the stator casing 200 can also be formed by fixing the stator 1 obtained in the bottom wall 204 of the base 202. This fixing is for example made by gluing.
- the steps of each of the two examples of the method can be carried out directly in parallel with the positioning in the base 202 of the stator casing 200.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2104433A FR3122537B1 (fr) | 2021-04-28 | 2021-04-28 | Stator pour machine à flux axial et procédé de fabrication d’un tel stator |
| PCT/EP2022/061356 WO2022229324A1 (fr) | 2021-04-28 | 2022-04-28 | Stator pour machine a flux axial et procede de fabrication d'un tel stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4331081A1 true EP4331081A1 (fr) | 2024-03-06 |
Family
ID=76375256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22726094.0A Pending EP4331081A1 (fr) | 2021-04-28 | 2022-04-28 | Stator pour machine à flux axial et procédé de fabrication d'un tel stator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240195272A1 (fr) |
| EP (1) | EP4331081A1 (fr) |
| CN (1) | CN117280567A (fr) |
| FR (1) | FR3122537B1 (fr) |
| WO (1) | WO2022229324A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11936256B2 (en) | 2020-04-24 | 2024-03-19 | Jacobi Motors, Llc | Flux-mnemonic permanent magnet synchronous machine and magnetizing a flux-mnemonic permanent magnet synchronous machine |
| US12558980B2 (en) | 2023-11-09 | 2026-02-24 | Jacobi Motors, Llc | Integrated variable flux memory motor charger |
| US12614998B2 (en) | 2024-03-04 | 2026-04-28 | Jacobi Motors, Llc | System for multi-variable flux memory motor configuration |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2358523A (en) * | 1999-12-21 | 2001-07-25 | Richard Fletcher | Electronically commutated electrical machine |
| EP2022983A3 (fr) * | 2006-03-27 | 2017-09-06 | Daikin Industries, Ltd. | Noyau d'armature, moteur l'utilisant, et son procédé de fabrication |
| US9287739B2 (en) * | 2009-07-30 | 2016-03-15 | Bison Gear & Engineering Corp. | Axial flux stator and method of manufacture thereof |
| JP2011250542A (ja) * | 2010-05-25 | 2011-12-08 | Daikin Ind Ltd | アキシャルギャップ型モータの固定子、及びその固定子に用いられるインシュレータの製造方法 |
| KR20140084494A (ko) * | 2012-12-26 | 2014-07-07 | 현대모비스 주식회사 | 축방향 자속 모터의 냉각구조 |
| WO2020072734A1 (fr) * | 2018-10-04 | 2020-04-09 | Montana Technologies, Llc | Rotor et stator pour machine à flux axial à grande vitesse |
| FR3087304B1 (fr) | 2018-10-16 | 2021-12-17 | Renault Sas | Dent statorique pour machine electrique, culasse et stator associes |
-
2021
- 2021-04-28 FR FR2104433A patent/FR3122537B1/fr active Active
-
2022
- 2022-04-28 EP EP22726094.0A patent/EP4331081A1/fr active Pending
- 2022-04-28 WO PCT/EP2022/061356 patent/WO2022229324A1/fr not_active Ceased
- 2022-04-28 CN CN202280031219.0A patent/CN117280567A/zh active Pending
- 2022-04-28 US US18/556,966 patent/US20240195272A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022229324A1 (fr) | 2022-11-03 |
| CN117280567A (zh) | 2023-12-22 |
| FR3122537A1 (fr) | 2022-11-04 |
| US20240195272A1 (en) | 2024-06-13 |
| FR3122537B1 (fr) | 2026-04-03 |
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Legal Events
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| STAA | Information on the status of an ep patent application or granted ep patent |
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