EP3320603A1 - Rotary electric machine with optimized cooling - Google Patents
Rotary electric machine with optimized coolingInfo
- Publication number
- EP3320603A1 EP3320603A1 EP16745797.7A EP16745797A EP3320603A1 EP 3320603 A1 EP3320603 A1 EP 3320603A1 EP 16745797 A EP16745797 A EP 16745797A EP 3320603 A1 EP3320603 A1 EP 3320603A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- openings
- electrical machine
- housing
- rotating electrical
- 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
- 238000001816 cooling Methods 0.000 title description 9
- 239000000110 cooling liquid Substances 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims description 15
- 239000002826 coolant Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 12
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
-
- 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
- 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
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- 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
-
- 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
- H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators
Definitions
- the present invention relates to a rotating electrical machine with optimized cooling.
- the invention finds a particularly advantageous, but not exclusive, application with high power reversible electrical machines that can operate in alternator mode and in motor mode.
- the rotating electrical machines comprise a stator and a rotor secured to a shaft.
- the rotor may be integral with a driving shaft and / or driven and may belong to a rotating electrical machine in the form of an alternator, an electric motor, or a reversible machine that can operate in both modes.
- the stator is mounted in a housing configured to rotate the shaft for example by means of bearings.
- the rotor comprises a body formed by a stack of sheets of sheets held in package form by means of a suitable fastening system, such as rivets axially passing through the rotor body from one side to the other.
- the rotor comprises poles formed for example by permanent magnets housed in cavities formed in the magnetic mass of the rotor, as described for example in document EP0803962.
- the poles are formed by coils wound around rotor arms.
- the stator comprises a body consisting of a stack of thin sheets forming a ring, whose inner face is provided with notches open inwardly to receive phase windings. These windings pass through the notches of the stator body and form buns protruding from both sides of the stator body.
- the phase windings are obtained for example from a continuous wire covered with enamel or from conductive elements in the form of pins connected together by welding. These windings are polyphase windings connected in star or delta whose outputs are connected to a voltage rectifier bridge.
- a reversible electric machine of high power can be integrated in various elements of the power train.
- the machine can thus be coupled to a gearbox, a clutch, or a differential of the vehicle.
- the electric machine is then able to operate in an alternator mode to provide, in particular, power to the battery and to the on-board vehicle network, and in a motor mode, not only to start the engine, but also to participate pulling the vehicle alone or in combination with the engine. Given its significant power between 18kW and 50kW, the electric machine tends to heat up during operation.
- the invention aims to optimize the cooling of this type of machine.
- the invention proposes a rotating electrical machine comprising:
- said housing comprises a plurality of openings each opening at one of their ends outside said rotary electrical machine and at another of their ends on the side of said channels.
- the invention thus makes it possible to improve the cooling of the rotating electrical machine by authorizing the production of a coolant distribution chamber, for example oil, outside the machine supplying the internal channels via the openings to ensure a homogeneous distribution of the liquid inside the machine.
- a coolant distribution chamber for example oil
- said plurality of openings is angularly distributed along one periphery of said housing.
- said housing comprises a recess, in particular peripheral, forming at least a portion of a coolant distribution chamber when said rotating electrical machine is inserted into a host element.
- a surface of the section of the different openings varies according to an angular position of said openings, so that said cooling liquid circulates in each channel with substantially the same pressure.
- said openings on an angular portion of at least 100 degrees, in particular 180 degrees, said openings have an increasing section.
- said housing comprises, in particular on its outer wall, a groove for receiving a seal.
- the groove is arranged to receive an O-ring.
- said casing comprises an axial guiding element of said rotating electrical machine when it is inserted into an envelope of a host element intended to be mechanically coupled with said rotating electrical machine, and a centering element of said rotating electrical machine. with respect to said envelope of said host element.
- said rotating electrical machine comprises a shaft having:
- a power of the machine may be between 10kW and 50kW.
- an outer diameter of the rotor is between 8 and 14 cm, in particular between 10 and 12 cm, and is preferably 1 1 cm.
- an outer diameter of the stator is between 10 and 20 cm, in particular between 13 and 18 cm, and is preferably 15 cm.
- the cooling circuit is arranged to allow the flow of a cooling liquid in an axial bore made in the shaft.
- the invention also relates to an assembly characterized in that it comprises an envelope of a host element and a rotating electrical machine as defined above inserted in said envelope.
- said distribution chamber is delimited by a portion of an inner wall of said casing and a portion of an outer wall of said casing.
- the assembly comprises a jointjoint, including toric, to ensure a closure of said distribution chamber. This forces the oil into the machine through the circumferential openings in the housing.
- the seal is disposed in the groove.
- said casing comprises a flat surface bearing against a corresponding flat surface of said envelope of a host element to ensure sealing of said distribution chamber.
- the chamber is thus delimited by the portion of the inner wall of the casing, by the portion of the outer wall of the casing, by the seal and by the flat contact area between the casing and the casing.
- said openings each have an axis extending along an axis of rotation of the rotating electrical machine.
- an oil injection direction is inclined with respect to an axis of said openings.
- said coolant located in said distribution chamber is under pressure and circulates at a flow rate of between 3 and 11 liters / minute.
- Figure 1 is a longitudinal sectional view of a rotary electric machine according to the present invention.
- Fig. 2 is a longitudinal sectional view of a rotating electrical machine according to the present invention without the active parts installed within a host element;
- Figures 3a and 3b show perspective views of the rotating electrical machine according to the present invention at different angles
- Figure 4 is a front view of the rotating electrical machine according to the present invention.
- Figure 5 is a partial sectional view of the rotating electrical machine according to the present invention
- Fig. 6 is a perspective view showing the rear bearing of the rotating electrical machine according to the present invention
- FIG. 7a and 7b are respectively longitudinal and perspective torque views illustrating the flow direction of the coolant within the rotating electrical machine according to the present invention. Identical, similar or similar elements retain the same reference from one figure to another. In the remainder of the description, it is considered that a "front" element is situated on the side of the coupling member of the machine, such as a pinion or a pulley, with the host element and an element "back” is located on the opposite side.
- FIG. 1 shows a rotating electrical machine 10 comprising a polyphase stator 11 surrounding an X-axis rotor 12 mounted on a shaft 13. The stator 11 is carried by a housing 16 configured to rotate the shaft 13.
- stator 1 1 surrounds the rotor 12 with presence of an air gap between the inner periphery of the stator 1 1 and the outer periphery of the rotor 12.
- This electrical machine 10 is intended to be installed inside an envelope 21 of a visible element 20 visible in Figure 2 belonging to a motor vehicle traction chain.
- the host element 20 to be mechanically coupled with the electric machine 10 may for example take the form of a clutch, a gearbox, or a differential.
- the shaft 13 carries at one of its ends a coupling member 24, such as a pinion, intended to mesh with a corresponding gear (not shown) of the host element 20 to ensure a transmission. couple between the two elements.
- the pinion 24 may be an attached pinion mounted on the shaft 13 or a pinion of another type.
- the coupling member 24 may consist of a pulley intended to cooperate with a belt.
- the machine 10 is able to operate in an alternator mode to provide, in particular, power to the battery and to the on-board vehicle network, and in a motor mode to participate in pulling the vehicle alone or in combination with the heat engine.
- the rotor 12 comprises a body 25 formed by a stack of sheets of sheets. These sheets of sheet metal are held in the form of a bundle of sheets by means of a fastening system 26 adapted, such as rivets axially passing through the rotor 12 from one side to the other. Permanent magnets 27 are implanted in openings of the body. The magnets 27 may be rare earth or ferrite depending on the applications and the desired power of the machine 10. Alternatively, the poles of the rotor 12 may be formed by coils. Furthermore, the stator January 1 comprises a body 30 in the form of a pack of sheets with notches, for example of the semi-closed type, equipped with notch insulator for mounting the winding 31 of the stator January 1.
- the winding 31 comprises a set of phase windings passing through the notches of the body of the stator January 1 and forming front bunks 32 and rear 33 projecting on either side of the body 30 of the stator January 1.
- the phase windings are obtained here from conductive elements in the form of pins connected together for example by welding. These windings are for example three-phase windings connected in one or more stars or in one or more triangles.
- the outputs of the phase windings are connected to a switching bridge and / or rectifier and / or to an inverter comprising diodes or MOSFET type transistors, especially when it is a reversible machine.
- the housing 16 has front 36 and rear 37 bearings assembled together.
- the bearings 36 and 37 are of hollow form and each carry in their center, a ball bearing 38, 39 for the rotational mounting of the shaft 13.
- the bearing is a magnetic bearing.
- the front bearing 36 comprises a nose 42 projecting from a transverse wall 43.
- a cylindrical wall 44 extends from the outer periphery of the transverse wall 43.
- the rear bearing 37 has a transverse wall 47 having a through hole at its center to allow the passage of the shaft 13 and provided with an annular bearing surface 48 for supporting the outer ring of the rear bearing 39.
- the rear bearing 37 also has a cylindrical wall 49 extending from an outer periphery of the transverse wall 43.
- the rear bearing 37 is fixed to the front bearing 36 by means of fasteners 51, such as screws or rivets, passing through openings made in an annular flange 50 coming from the wall 49 to cooperate with bores formed in the thickness of the cylindrical wall 44 of the front bearing 36 (see Figure 2).
- the nose 42 is intended to cooperate with a hollow sleeve 56 of corresponding shape coming from a wall 57, in particular an internal transverse wall, of the envelope 21.
- the nose 42 forms an axial guiding element of the machine 10 with respect to the host element 20, when it is inserted inside the sleeve 56.
- the axial positioning of the machine 10 inside the envelope 21 is controlled by the external surface of the transverse wall 43 of the front bearing 36 constituting an axial abutment intended to abut against the corresponding transverse wall 57 of the casing 21.
- the abutment surface is contained in a plane P1 perpendicular to the axis X of the machine 10.
- the nose 42 forms a centering element of the machine 10 with respect to the casing 21 of the host element 20.
- the nose 42 has at the outer periphery an adjusted surface 60 with respect to the sleeve 56, for example by an adjustment between 1/100 and 3/100 of a millimeter, for example of the H7g6 type.
- a section of the nose 42 perpendicular to the axis of the housing 16 (corresponding to the X axis) intersecting the adjusted surface 60 has an upper surface strictly at a surface of another section of the nose 42.
- the nose 42 has a cylindrical wall delimiting a space allowing the passage of the shaft 13.
- the nose 42 also carries the outer ring of the front bearing 38 cooperating with a corresponding bearing surface formed in the inner periphery of the nose 42.
- the surface of the largest section of the nose 42 is strictly lower than any surface of a section of the machine 10 contained in a plane perpendicular to the axis X of the machine 10 cutting the stator January 1.
- the largest outside diameter of the nose 42 located at the adjusted surface 60 is smaller than the outside diameter of any other part of the front bearing 36 or the rear bearing 37.
- the guiding and centering functions of the machine 10 are dissociated and carried out by two distinct elements.
- a second portion 62 of the front bearing 36 also centers the machine 10 with respect to the envelope 21.
- this second portion 62 is constituted by a portion of the cylindrical wall 44 of the front bearing 36 located at the connection between the two bearings 36, 37.
- This portion 62 has a surface adjusted relative to a cylindrical face corresponding internal envelope 21, for example by an adjustment between 1/100 and 3/100 of a millimeter, for example of H7g6 type.
- a centering portion of the cylindrical wall 49 of the rear bearing 37 ensures the centering of the machine 10 with respect to the casing 21.
- This portion comprises a surface adjusted with respect to a corresponding inner cylindrical face of the envelope 21, for example by an adjustment of between 1/100 and 3/100 millimeters, for example of the H7g6 type.
- the shaft 13 has in its central part splines for its force fitting inside the central bore of the rotor body 25.
- a setting portion 65 allows rotation of the shaft 13 during the insertion of the machine 10 into the envelope 21. This facilitates the coupling of the machine 10 with the host element 20 by allowing the insertion of the teeth of the pinion 24 carried by the shaft 13 between the teeth spaces of the corresponding pinion of the host element 20.
- adjustment 65 comprises at least two flats intended to cooperate with a tool of corresponding shape. This tool can be manipulated manually by an operator or, if necessary, automatically by a robot assembly line.
- the electric machine 10 is cooled by means of a cooling circuit 68 arranged to allow in particular the flow of a cooling liquid, in this case oil between the housing 16 and the stator body 30, in the direction of the axis X.
- a cooling liquid in this case oil
- the cooling circuit 68 comprises a pump 69 for injecting cooling liquid into a distribution chamber 70.
- the distribution chamber 70 of generally annular shape is delimited by a portion of an inner face 72 of the housing 21 and part of the wall 44 of the front bearing 36.
- the front bearing 36 comprises, in the cylindrical wall 44, a peripheral recess 71.
- This recess 71 is defined by a reduction in diameter of the cylindrical wall 44.
- the chamber 70 is delimited by the external face of this recess 71 as well as by an internal face vis-à-vis an inner wall of the casing 21.
- the chamber 70 extends beyond the recess 71 in an annular space delimited by the outer periphery of the cylindrical portion of the front bearing 36 and the inner face 72 of the casing 21.
- the chamber 70 is hermetically sealed at its rear end by a seal 75 positioned inside a groove 78 formed in the outer periphery of the front bearing 36. On the front end side, the outer surface of the wall transverse wall 43 bears against a corresponding flat surface of the transverse wall 57 of the casing 21 to seal the chamber 70.
- the chamber 70 is in communication with a plurality of channels 76 (see FIG. extending axially between the stator January 1 and the housing 16 for the passage of the coolant. These channels 76 are distributed angularly in a regular manner on the circumference of the stator January 1.
- these channels 76 are formed by grooves driven in an outer periphery of the stator body 1 1 and radially closed by the inner face of the casing 16.
- the configuration is reversed and the grooves are made in the inner face of housing 16.
- the casing 16 has a plurality of openings 77 each opening at one end to the outside of the machine 10 in the distribution chamber 70 and at another their ends on the side of the channels 76.
- the plurality of openings 77 is angularly distributed along a periphery of the casing 16.
- a surface of the section of the different apertures 77 varies according to an angular position of the apertures 77, so that the coolant flows in each channel 76 with substantially the same pressure.
- the further one moves away from the oil injection zone 80 inside the chamber 70 the more the surface of the sections of the different openings 77 increases.
- the openings 77 have an increasing cross section when one moves away from the oil injection zone.
- the openings 77 each have an axis X1 (see FIG. 7b) extending parallel to the axis X of the machine 10 corresponding to the flow direction of the cooling liquid inside the channels 76.
- oil injection direction along the arrow F1 is inclined relative to the axis X1 of the openings 77, for example at an angle of at least 40 degrees and here being about 90 degrees.
- the liquid in the distribution chamber 70 is under pressure and preferably circulates at a flow rate of between 3 and 11 liters / minute.
- the oil injected along the arrow F1 is distributed homogeneously inside the openings 77 on the circumference of the chamber 77 along the arrow F2 to flow axially at the inside of the channels 76 following the arrows F3 on the circumference of the stator January 1 in order to effectively cool the machine 10.
- the oil also circulates in an axial bore 83 made in the shaft 13 of the rotor 12 and in ducts 84 issuing from said bore 83 opening towards the two axial end faces of the rotor 12
- the shaft 13 also comprises at least one oil outlet 85 opening in front of a reservoir 88 formed in the casing 16.
- This tank 88 is adapted to receive the coolant also acting as a lubricant to ensure the lubrication of the front bearing 38.
- the tank 88 is positioned in the lower part of the machine 10 so that the lubricant can be stored in the tank 88 by gravity.
- the reservoir 88 is configured to promote the flow of excess lubricant towards the bearing 38 when the reservoir 88 is full.
- the tank 88 is delimited by a bottom 89, a first flange 91 formed an annular flange radially oriented which is derived from an inner periphery of the nose 42, and a second flange 92 formed by the outer ring of the Bearing 38.
- a portion of the bearing 38 is thus in fluid contact with the lubricant of the reservoir 88, that is to say that at least a portion of the bearing 38 is in direct contact with the oil of the reservoir 88.
- flange 91 is configured to allow the flow of the lubricant from the reservoir 88 to the bearing 38, especially by gravity, when the machine 10 is mounted in the host element 20.
- the height H1 of the first edge relative to the bottom 89 is greater than the height H2 of the second flange 92 relative to the bottom 89.
- the bottom 89 is slightly raised relative to the bearing surface of the inner ring of the 38 and extends along its width in a direction of the X axis of the machine 10.
- the bearing 38 is free of flange.
- the bearing 38 is preferably degreased so that it can be easily traversed by the oil without interference with the fat that it contains by default and which has been removed as a precaution.
- the cooling circuit 68 operates in closed loop, so that the oil is taken by the pump 69 in an external reservoir 95 to the machine 10 and is recovered after circulation in the machine 10 in the reservoir 95.
- the rear bearing 37 has openings 96 distributed around its circumference and clearly visible in FIG. 6. As can be seen in FIGS. 3a, 3b and 4, the bearing front 36 also has an opening 97 to allow an oil outlet to the reservoir 95.
- the casing 16 comprises an indexing member 100 arranged to allow the angular indexing of the machine 10 by relative to the envelope 21 when it is inserted into the envelope 21.
- the indexing member 100 shown in FIGS. 3b, 4, and 5 is constituted by a stud made on the transverse wall 43 of the front bearing 36. This stud 100 is arranged to fit in a correspondingly shaped bore of the host element 20.
- the pad 100 may be of type reported with respect to the casing 16 or alternatively, of material with the casing 16.
- the pad 100 is further configured to allow the locking in rotation of the machine 10.
- the pad 100 has for this purpose a section adapted to contribute to withstanding at least a portion of the forces developed by the electrical machine 10 in operation.
- the coolant also acting as a lubricant may take the form of an emulsion of oil and water.
- a power of the machine 10 may be between 10kW and 50kW.
- An outer diameter of the rotor 12 is between 8 and 14 cm, in particular between 10 and 12 cm, and is preferably 1 1 cm.
- An outside diameter of the stator January 1 is between 10 and 20 cm, especially between 13 and 18 cm, and is preferably 15 cm.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1556544A FR3038795B1 (en) | 2015-07-10 | 2015-07-10 | ROTATING ELECTRIC MACHINE WITH OPTIMIZED COOLING |
PCT/FR2016/051726 WO2017009548A1 (en) | 2015-07-10 | 2016-07-07 | Rotary electric machine with optimized cooling |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3320603A1 true EP3320603A1 (en) | 2018-05-16 |
Family
ID=55072768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16745797.7A Pending EP3320603A1 (en) | 2015-07-10 | 2016-07-07 | Rotary electric machine with optimized cooling |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3320603A1 (en) |
JP (1) | JP6900361B2 (en) |
CN (1) | CN107949978B (en) |
FR (1) | FR3038795B1 (en) |
WO (1) | WO2017009548A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS534112U (en) * | 1976-06-30 | 1978-01-14 | ||
JPH0993865A (en) * | 1995-09-29 | 1997-04-04 | Hitachi Ltd | Induction motor |
DE102004048461A1 (en) * | 2004-10-05 | 2006-04-27 | Siemens Ag | Housing for an electrical machine |
JP5458343B2 (en) * | 2007-11-14 | 2014-04-02 | Smc株式会社 | Servomotor |
US8450888B2 (en) * | 2009-04-20 | 2013-05-28 | General Electric Company | Integrated brushless starter/generator system |
US8169110B2 (en) * | 2009-10-09 | 2012-05-01 | GM Global Technology Operations LLC | Oil cooled motor/generator for an automotive powertrain |
DE102013114187A1 (en) * | 2012-12-21 | 2014-06-26 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Electric motor for use in electrically variable transmission used in hybrid drive train of hybrid electric vehicle, has barrier transmitting fluid and shielding rotor from fluid so that quantity of fluid between rotor and stator is limited |
JP5642821B2 (en) * | 2013-02-26 | 2014-12-17 | ファナック株式会社 | Cooling jacket having grooves for allowing refrigerant to pass through, stator provided with cooling jacket, and rotating electrical machine provided with cooling jacket |
-
2015
- 2015-07-10 FR FR1556544A patent/FR3038795B1/en active Active
-
2016
- 2016-07-07 WO PCT/FR2016/051726 patent/WO2017009548A1/en active Application Filing
- 2016-07-07 JP JP2018500668A patent/JP6900361B2/en active Active
- 2016-07-07 EP EP16745797.7A patent/EP3320603A1/en active Pending
- 2016-07-07 CN CN201680051736.9A patent/CN107949978B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN107949978A (en) | 2018-04-20 |
FR3038795B1 (en) | 2018-06-29 |
JP6900361B2 (en) | 2021-07-07 |
CN107949978B (en) | 2021-07-27 |
WO2017009548A1 (en) | 2017-01-19 |
JP2018520629A (en) | 2018-07-26 |
FR3038795A1 (en) | 2017-01-13 |
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