EP3701620A1 - Dispositif de refroidissement d'un stator d'une machine électrique d'un véhicule automobile, stator et véhicule automobile - Google Patents

Dispositif de refroidissement d'un stator d'une machine électrique d'un véhicule automobile, stator et véhicule automobile

Info

Publication number
EP3701620A1
EP3701620A1 EP18769315.5A EP18769315A EP3701620A1 EP 3701620 A1 EP3701620 A1 EP 3701620A1 EP 18769315 A EP18769315 A EP 18769315A EP 3701620 A1 EP3701620 A1 EP 3701620A1
Authority
EP
European Patent Office
Prior art keywords
stator
cooling device
winding groove
laminated core
coolant
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Withdrawn
Application number
EP18769315.5A
Other languages
German (de)
English (en)
Inventor
Jens Richter
Andreas Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3701620A1 publication Critical patent/EP3701620A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • 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
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • 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
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts

Definitions

  • Cooling device for a stator of an electrical machine of a motor vehicle, stator and motor vehicle
  • the invention relates to a cooling device for cooling a stator for an electrical machine of a motor vehicle.
  • the invention also relates to a stator for an electrical machine of a motor vehicle and a motor vehicle.
  • the interest is directed to electric machines for motor vehicles, in particular electric drive machines for electric or hybrid vehicles.
  • These electric machines usually have a stator and a rotatably mounted rotor with respect to the stator.
  • the stator has a laminated core, at the axial ends windings form a respective winding head.
  • a power loss occurs in the form of heat, through which the electric machine heats up. This heating of the electric machine can adversely affect the performance of the electric machine. Overheating of the electric machine can even lead to failure of the electric machine.
  • Cooling device to be equipped, which is very expensive to manufacture and also very expensive. If the cooling device is located on an inner side of the housing, so there is also the disadvantage that the housing is very bulky and space consuming. It is also known to provide a cooling medium for cooling the housing on an outer side of the housing. Cooling through the housing must be
  • Heat transfer resistance between laminated core and housing which reduces the possible cooling effect, overcome and requires a good mechanical connection between the laminated core and the housing, for example by a
  • Thedestoffleitritt and the at least one Wicklungsnutkühlkanai are formed with a hollow cylindrical laminated core of the stator, which has in a circumferential direction a plurality of axially extending and formed for receiving windings winding grooves, plugged together.
  • Thedestoffleitmaschine is designed for arranging on an end face of the laminated core and for conducting coolant along the end face and has an inlet for supplying the coolant and a drain for discharging the coolant.
  • Coolant unit axially extending Wicklungsnutkühlkanai is designed for placement in at least one winding groove and for guiding the coolant in the at least one winding groove and is fluidly coupled to the inlet and the outlet.
  • the invention also relates to a stator for an electric machine
  • Cooling device wherein the cooling device is plugged together with the laminated core.
  • the at least one Wicklungsnutkühlkanai is arranged together with windings of the stator in at least one winding groove of the laminated core and theméffenleitmaschine is arranged on the front side of the laminated core.
  • the electric machine is in particular a drive machine for a motor vehicle in the form of an electric or hybrid vehicle.
  • the electric machine has the stator, which comprises the hollow-cylindrical laminated core and electrical windings.
  • a rotor can be rotatably mounted, wherein a rotation axis of the Rotor corresponds to a longitudinal axis of the hollow cylindrical Blechpaktes.
  • the rotor is enclosed or surrounded by the stator with the formation of an air gap.
  • the laminated core has at one of the air gap facing the inside of the winding grooves for receiving the windings.
  • the winding grooves are arranged in the circumferential direction equidistantly from each other and jet-shaped and extend in the axial direction from a first end face of the laminated core to a first end face opposite the second end face of the laminated core.
  • the windings arranged in the winding slots can protrude beyond the laminated core on the end faces and form there a respective annular or annular winding head.
  • the windings of the stator can, for example, as
  • the cooling device To cool the stator, the cooling device with the laminated core
  • the cooling device is for
  • the cooling device is in particular prefabricated or preassembled to form the structural unit. This means that the
  • the cooling device can thus be plugged as a whole in the laminated core and also be solved without damage again from the laminated core.
  • the cooling device and the laminated core in particular, can be plugged together accurately and thus form a plug-in system or modular system.
  • the cooling device can be formed in one piece or in one piece. It can also be provided that the cooling device is designed in several parts, wherein the
  • Wicklungsnutkühlkanal be joined together and connected, wherein joints or contact points are sealed, for example by gluing, pressing, sealing bodies or the like.
  • thedeticatician and the at least one Wicklungsnutkühlkanal are formed as injection molded parts.
  • Coolant unit and the at least one Wicklungsnutkühlkanal can be made for example by means of an injection molding of a suitable plastic.
  • Theméffenleitor is particularly designed so that they are in
  • Thedeffenleitmaschine has the inlet, via which the cooling device, the coolant or cooling medium, such as water, can be supplied.
  • the coolant unit has the outlet, via which the coolant can be removed again from the cooling device.
  • the inlet and the outlet are arranged in the assembled state on the same end face or the same axial end of the laminated core. The coolant is thus in particular in a through the radial direction and the
  • Thedeffenleithow which is located in the region of the winding head of the stator, can also be cast together with the winding head or embedded in a potting compound, so that in addition by theisserstoffleithow the winding head can be cooled.
  • the at least one Wickiungsnutkühlkanal extending from the coolant unit in the axial direction and is arranged in the assembled state of the cooling device with the laminated core together with windings of the stator within at least one winding groove.
  • the cooling device may have a number corresponding to the number of winding grooves
  • Windlungsnutkühlkanälen have.
  • the at least one Wickiungsnutksselkanal may extend over an entire height of the laminated core from the first end, on which, for example, the coolant unit is arranged to a first end face opposite the second end face of the laminated core.
  • the at least one Wickiungsnutkühlkanal extends only partially in the at least one winding groove or on the at least one
  • Wicklungsnut protrudes at the second end face.
  • the at least one Wickiungsnutkühlkanal is adapted to lead the coolant from the inlet of theméffenleitmaschine axially along a first flow direction from the first end side to the second end side of the laminated core and along a first flow direction opposite to the second flow direction to the drain back.
  • the Wickiungsnutkühlkanal passes the coolant along those windings, which are arranged together with the Wickiungsnutkühlkanal in the respective winding groove.
  • the at least one Wickiungsnutkühlkanal is formed completely enveloped along the axial direction.
  • Wickiungsnutkühlkanal may for example be formed as a, in particular rectangular, tube.
  • the coolant touches the at least winding groove and the
  • the cooling device is designed as a sealed, structural unit, it can be particularly easily mounted by mating with the laminated core to the stator. By passing cooling medium in the winding grooves of the stator.
  • the stator can be cooled in a reliable and efficient manner.
  • the heat does not have to be dissipated to a cooled housing consuming.
  • the stator can thus be formed, for example, housing-free.
  • thedeffenleitmaschine has an annular cover member for arranging on the end face of the laminated core, wherein the inlet has at least one inlet nozzle and an annular inlet channel and the outlet has at least one outlet nozzle and an annular drain channel, and wherein the
  • the annular cover element has, for example, a radially inner inner wall and an outer radial direction
  • the cover element may also have an annular bottom, which in the assembled state of the cooling device faces the laminated core of the end face of the laminated core, and an annular cover which is axially opposite the base.
  • the inlet channel and the outlet channel are in particular arranged concentrically to each other and by the example
  • the inlet channel may be formed by the inner wall, the partition wall, the bottom and the cover.
  • the drainage channel may be formed by the partition wall, the outer wall, the bottom and the cover.
  • the inlet channel and the outlet channel are fluidically coupled to the at least one Wicklungsnutkühlkanal.
  • the inlet channel is adapted to the coolant in the at least one
  • the drainage channel is designed to remove the coolant from the at least one Wicklungsnutkühlkanal.
  • the at least one inlet nozzle, via which the coolant is introduced into the inlet channel, and the trim at least one outlet, via which the coolant from the drainage channel can be removed, are in particular in the cover of
  • the inlet nozzle is fluidically coupled to the inlet channel, the outlet nozzle is fluidly coupled to the drainage channel.
  • openings may be arranged adjacent to which
  • Wicklungsnutkühlkanäle are arranged and via which the coolant can be passed into or out of the corresponding Wicklungsnutkühlkanal.
  • Wicklungsnutkühlkanäle can be arranged completely circumferentially in the circumferential direction of the annular cover element, so that the Wicklungsnutkühlkanäle form a cylindrical cage structure.
  • the at least one Wicklungsnutkühlkanal having an axially extending and fluidically coupled to the inlet Hinlaufkanal Scheme for guiding the coolant in a winding groove and an axially extending and fluidically coupled to the drain return channel region for conducting the coolant from a Wicklungsnut , wherein the Hinlaufkanal Scheme and the
  • Return channel area are fluidically coupled via a deflecting element.
  • Wicklungsnutkühlkanal thus has the two channel regions, which extend in particular parallel to each other and in the axial direction.
  • the Hinvierkanal Scheme passes the coolant from the inlet of theméffenleitmaschine axially in the first flow direction through the winding groove in which the Hinvierkanal Scheme in
  • the return channel region directs the coolant in the second flow direction axially through the winding groove, in which the return channel region in
  • the deflection element is fluidly coupled to the channel regions.
  • the deflecting element may for example be U-shaped and be arranged adjacent to axial ends of the channel regions.
  • the Hinvierkanal Scheme and the return channel region of the at least one Wicklungsnutkühlkanals are arranged together in a winding groove of the laminated core, so that the Wicklungsnutkühlkanal is adapted to direct the cooling medium in the same Wicklungsnut from the inlet back to the drain.
  • the cooling device in this case has a number corresponding to the number of Wicklungsnuten number of Wicklungsnutkühlkanälen, ie in each case one with the number of winding grooves corresponding number of return channel areas and
  • Wicklungsnutkühlkanal provided.
  • one of the channel regions for example the trace channel region, is arranged in the radial direction on the inside, that is to say in an area of the winding groove facing the air gap.
  • the other channel region for example, the return kanai Scheme, can in a rear wall of the
  • Hinvierkanal Council and the return channel area are formed adjacent to each other.
  • Wicklungsnutkühlkanal be integrally formed and have the Hinlaufkanal Scheme, the return kanai Scheme and the deflection. This can be the
  • Wicklungsnutkühlkanal be formed for example as a rectangular tube, in which, starting from the coolant unit, a partition wall in the axial direction, but not over the entire length of the Wicklungsnutkühlkanals extends. A gap formed thereby between the Hinauerkanal Scheme and the
  • the Wicklungsnutksselkanal may be arranged for example in the radially inner, the air gap facing region of the winding groove.
  • the winding groove of the laminated core may be filled with windings.
  • Wicklungsnutkühlkanal be disposed adjacent to the rear wall of the winding groove.
  • the windings may be arranged.
  • the Wicklungsnutksselkanal in a region between the rear wall of the Wicklungsnut facing region and the air gap be arranged facing area. In the radial direction in front of and behind the
  • Wicklungsnutkühlkanal then the windings can be arranged. The windings are thus separated or separated from each other by the Wicklungsnutkühlkanal.
  • the Hinvierkanai Scheme and the return channel region are formed radially spaced to form an intermediate region to each other, wherein in the intermediate region windings of the stator can be arranged in the winding groove.
  • the Hinvierkanai Scheme be arranged in the air gap facing region of the winding groove. Adjacent to the
  • Hinckerkanai Symposium can be arranged windings and adjacent to the
  • the return channel region may be arranged in the region of the winding groove facing the rear wall of the winding groove.
  • the windings in the radial direction are surrounded on both sides by the channel regions, so that the stator can be cooled particularly reliably by conducting the coolant on both sides along the windings.
  • Return channel region formed projecting in the circumferential direction and can be arranged overlapping with an adjacent to the at least one winding groove stator tooth.
  • Hinvierkanai Scheme and the return channel area extend in
  • Wicklungsnutkühlkanal may for example be integrally formed as a U-shaped bent tube.
  • the deflection element which is formed, for example, by the bent region of the winding groove cooling channel, is arranged in particular on the second end face of the laminated core and overlaps with the stator tooth located on the second end face.
  • a stator tooth is formed by a region of the laminated core between two adjacent winding in the circumferential direction.
  • Windungsnutkühlkanals be bent or folded over in the direction of the stator tooth.
  • This embodiment is based on the finding that the winding heads protrude beyond the second end face from the winding grooves.
  • the deflecting element is advantageously arranged in a particularly space-saving manner between the winding heads. This also gives the advantage that the winding heads, to which can form particularly hot spots, so-called "hotspots" can be reliably cooled.
  • Return channel areas be arranged in the winding grooves, wherein a
  • Hinvierkanal Coloural Council a first winding groove and a return channel region of a second winding groove adjacent thereto form a Wicklungsnutkühlkanal.
  • the cooling device thus has, in particular, half as many winding groove cooling channels as winding grooves.
  • the cooling medium is conducted from the inlet of theméstoffleitmaschine here in the Hinvierkanal Scheme the first Wicklungsnut and on the
  • Conducted coolant unit From the arrangement of only one channel region in a winding groove, there is the advantage that the individual channel regions can be formed with a larger diameter, resulting in a larger
  • the cooling device comprises a deflecting device with the at least one deflecting element, wherein the deflecting device is designed for arranging on one of the front side of the laminated core with theisserffenleitmaschine opposite end face of the laminated core and with the at least one
  • the deflection device can be designed, for example, as an annular cover element which can be arranged on the second end face of the laminated core. For example, first the structural unit with thehariffenleitmaschine and the at least one Wicklungsnutkühlkanal be inserted from a first direction in the laminated core, so that the channel areas are inserted into the respective winding grooves and theméstoffleitmaschine is arranged on the first end side of the laminated core. Then, the deflection of one of the first direction opposite second
  • the deflection device has in particular one to the number
  • a stator according to the invention which comprises the cooling device according to the invention, it is preferably provided that a region of the winding groove, in which the at least one Wicklungsnutkühlkanal is arranged, compared to a
  • winding grooves may be widened so as to be parallel in the region in which the winding groove cooling channel is arranged
  • the Wicklungsnutflanken form a transition between a Wicklungsnut and the laminated core in the direction of rotation.
  • a winding groove is thus formed in particular by two opposite Wicklungsnutflanken and the rear wall.
  • the region of the winding grooves can also be widened in such a way that the stator tooth adjoining the region of the winding grooves has a parallel edge.
  • the winding groove for receiving the at least one Wicklungsnutkühlkanals in the radial direction relative to a winding groove of a conventional, known in the prior art stator is formed extended. Depending on the arrangement of the at least one
  • Windings are shifted within the winding grooves.
  • a motor vehicle according to the invention comprises an electric machine with a stator according to the invention.
  • the motor vehicle is designed in particular as an electric vehicle or a hybrid vehicle, which comprises the electric machine for driving the motor vehicle.
  • Embodiments and their advantages apply correspondingly to the stator according to the invention and to the motor vehicle according to the invention.
  • Fig. 1 is a schematic exploded view of an embodiment of the invention stator with an embodiment of the cooling device according to the invention
  • FIG. 1 the stator according to FIG. 1 in the assembled state
  • 3a to 3d show a plan view of the stator with a first embodiment of the
  • Fig. 4 is a schematic exploded view of another
  • Embodiment of the invention stator with a further embodiment of the cooling device according to the invention.
  • FIG. 6a to 6c show a plan view of the stator with a first embodiment of FIG.
  • Fig. 1 and Fig. 2 show components of a stator 1 for an electric machine of a motor vehicle, not shown here.
  • the electric machine can be, for example, an electric drive motor for a motor vehicle designed as an electric vehicle or hybrid vehicle.
  • the stator 1 has a hollow-cylindrical laminated core 2 which revolves around a longitudinal axis L of the stator 1 along a circumferential direction U.
  • the longitudinal axis L also corresponds to an axis of rotation about which rotates a mounted inside the stator 1, not shown here rotor.
  • the laminated core 2 has an inner side 4, which is formed adjacent to an air gap 3 between the rotor and the stator 2.
  • the laminated core 2 on one of the inside 4 in the radial direction R opposite outside 5 on.
  • a plurality of Wicklungsnuten 6 is formed in the inner side 4 of the laminated core 2, which are arranged radially in the circumferential direction U.
  • the winding grooves 6 extend axially along the longitudinal axis L from a first end face 7 of the laminated core 2 to one of the first end face 7 axially opposite the second end face 8 of
  • stator 1 has a cooling device 9, of which in FIGS. 1 and 2 a first embodiment is shown.
  • the cooling device 9 has a
  • the cooling device 9 as a whole along an insertion direction E (see exploded view of the stator 1 of FIG. 1) at least partially inserted or inserted into the laminated core 2.
  • Sheet metal package 2 can therefore be put together.
  • the cooling device 9 and the laminated core 2 are shown in the assembled state. in the
  • a Wicklungsnutkühlkanal 1 1 is arranged in a winding groove 6 respectively.
  • a number of Wicklungsnutkühlkanälen 1 1 thus corresponds to a number of Wicklungsnuten 6.
  • Thedeatorimaschine 10 is arranged in the assembled state of the cooling device 9 and the laminated core 2 at the first end face 7 of the laminated core 2 and overlaps at least partially with the first end face. 7
  • Thedeffenleithow 10 here has an inlet 12 with at least one inlet nozzle 13 for supplying coolant and a drain 14 with at least one outlet nozzle 15 for discharging coolant.
  • the inlet nozzle 13 and the outlet nozzle 15 are arranged here in an annular cover 16 of an annular cover element 17 of theisserffenleitmaschine 10. Through the cover 16, an annular inner wall 18, an annular outer wall 19 and a bottom 20 of the cover member 17, an interior of the cover member 17 is enclosed, which one with the
  • annular drain channel may include.
  • the inlet channel and the outlet channel are in particular separated by a partition wall and concentric with each other, ie in the radial direction R adjacent to each other,
  • the Wicklungsnutkühlkanäle 1 1 are fluidly coupled to the inlet channel and the flow channel.
  • 20 openings may be provided in the bottom, via which coolant from the inlet channel in the respective Wicklungsnutkühlkanal 1 1 or from the respective Wicklungsnutkühlkanal 1 1 can be passed into the drain channel.
  • the Wickiungsnutkühlkanäie 1 1 can thus for cooling the stator 1, the coolant through the winding grooves 6 and along the windings arranged in the winding 6 lead.
  • FIGS. 3 a to 3d Various embodiments of the cooling device 9 according to FIGS. 1 and 2 are shown in FIGS. 3 a to 3d.
  • a cross-section through the laminated core 2 is shown on the left-hand side in FIGS. 3 a to 3d, and an enlarged illustration of a section of the cross-section with three adjacent winding grooves 6 is shown on the right-hand side.
  • Fig. 3a to 3d in a Wicklungsnut 6 each Wicklungsnutkühlkanal 1 1 is arranged, which has a Hinlaufkanal Scheme 21 and a return channel region 22.
  • the Hinvierkanal Scheme 21 is fluidly coupled to the inlet 12 and the
  • Return channel region 22 is fluidically coupled to the drain 14.
  • the deflecting element may be located, for example, on the second end face 8 of the laminated core 2. The coolant is thus passed from theRieschleitmaschine 10 through the Hinlaufkanal Scheme 21 in a winding groove 6 and the return channel region 22 in the same Wicklungsnut 6 to the
  • the Hinvierkanal Scheme 21 and the return channel region 22 are arranged here in the radial direction R one behind the other. According to the embodiments of the cooling device 9 according to FIGS. 3a, 3b, 3c, the trace channel region 21 and the return channel region 22 are formed adjacent to one another. For this purpose, the Wicklungsnutkühlkanal 1 1
  • Channel areas 21, 22 forming subspaces is shared. According to FIG. 3d, the trace channel region 21 and the return channel region 22 are spaced from one another in the radial direction R.
  • the winding groove cooling channels 1 1 are each arranged in a first region 24 of the winding grooves 6 adjoining the air gap 3. In a here adjacent to the first region 24 second region 25, which at the back to a
  • Wickiungsnutkühlkanäie 1 1 arranged in the second region 25, wherein the windings are arranged in the first, adjacent to the air gap 3 region 24 of the winding grooves 6. The windings are thus in the radial direction R before the
  • Wicklungsnutkühikanäle 1 1 arranged centrally in the winding grooves 6 in a lying between the first region 24 and the second region 25 third region 27. In the first and the second region 24, 25, the windings are then arranged. The windings are thus arranged in the radial direction R in front of and behind the Wicklungsnutkühlkanälen 1 1 and are separated by the Wicklungsnutkühikanäle 1 1.
  • Fig. 3d is one of the channel areas, here the Hinauerkanal Scheme 21, in the first region 24 of the winding groove 6, and the other channel region, here the return channel region 22, in the second region 25 of the winding groove 6 is arranged. Between the Hinlaufkanal Scheme
  • the deflecting element can be bent over at the second end face 8 of the laminated core 2 and, for example, via one to the respective one
  • FIGS. 4 and 5 show the laminated core 2 and a second embodiment of a cooling device 9 of the stator 1.
  • the Hinvierkanal Scheme 21 a Wicklungsnutkühlkanals 1 1 is arranged in a Wicklungsnut 6 and the return channel region 22 thereof
  • Wicklungsnutkühlkanals 1 1 arranged in an adjacent winding groove 6.
  • a Wicklungsnutkühlkanal 1 1 is thus divided into two adjacent Wicklungsnuten 6.
  • a deflection device 29 which comprises the deflection elements 30.
  • the deflection 29 points for each
  • the deflection device 29 is designed here as an annular cover, which in one of the insertion direction e
  • FIGS. 6a to 6c show various embodiments of the cooling device 9 according to FIGS. 4 and 5.
  • Fig. 6a are arranged alternately in the winding grooves 6 Hin channel sections 21 and return channel regions 22 each disposed in the adjacent to the air gap 3 first region 24 of the winding grooves 6.
  • the windings of the stator 1 can be arranged. The windings are thus arranged in the radial direction R behind the trace channel regions 21 and return channel regions 22.
  • the trace channel regions 21 and return channel regions 22 are arranged in the second region 25, wherein the windings are arranged in the first region 24 adjoining the air gap 3.
  • the windings are thus arranged in the radial direction R before the Hinlaufkanal Schemeen 21 and return channel areas 22.
  • the trace channel regions 21 and return channel regions 22 are arranged centrally in the winding grooves 6 in the third region 27 lying between the first region 24 and the second region 25. In the first and the second region 24, 25, the windings are then arranged. The windings are thus in the radial direction R before and behind the Hin channel sections 21 and return channel areas 22nd
  • Wicklungsnutkühlkanäle 1 1 are arranged opposite the regions of the winding groove 6, in which the windings are arranged widened. These can be the
  • Regions with the Wicklungsnutkühlkanälen 1 for example, be widened so that result in parallel groove edges. Also, the areas with the Wicklungsnutkühlkanälen 1
  • Wicklungsnutkühlkanälen 1 for example, be widened so that result in parallel Stator leopardflanken.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un dispositif de refroidissement (9) destiné à refroidir un stator (1) d'une machine électrique d'un véhicule automobile et comportant une unité de conduite d'agent de refroidissement (10) et au moins un conduit de refroidissement de gorges d'enroulement (11). L'unité de conduite d'agent de refroidissement (10) et l'au moins un conduit de refroidissement de gorges d'enroulement (11) sont conçus comme une unité de construction et sont conçus pour pouvoir être assemblés avec un noyau feuilleté cylindrique creux (2) du stator (1) qui comporte dans un sens de rotation (U) une pluralité de gorges d'enroulement (6) s'étendant axialement et destinée à recevoir des enroulements du stator (1). L'unité de conduite d'agent refroidissement (6) est conçue pour être disposée sur une face d'extrémité (7) du noyau stratifié (2) et pour conduire l'agent de refroidissement le long de la face d'extrémité (7) et elle comporte une entrée (12) destinée à l'amenée d'agent de refroidissement et une sortie (14) destinée à l'évacuation de l'agent de refroidissement et l'au moins une unité de refroidissement de gorges d'enroulement (11), qui s'étend depuis l'unité d'agent de refroidissement (11), est conçue pour être disposée dans au moins une gorge d'enroulement (6) et pour conduire l'agent de refroidissement dans l'au moins une gorge d'enroulement (6) et est accouplé à l'entrée (12) et à la sortie (13) de manière fluidique. L'invention concerne également un stator (1), destiné à une machine électrique, et un véhicule automobile.
EP18769315.5A 2017-10-24 2018-09-06 Dispositif de refroidissement d'un stator d'une machine électrique d'un véhicule automobile, stator et véhicule automobile Withdrawn EP3701620A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017218933.9A DE102017218933A1 (de) 2017-10-24 2017-10-24 Kühlvorrichtung für einen Stator einer elektrischen Maschine eines Kraftfahrzeugs, Stator sowie Kraftfahrzeug
PCT/EP2018/073964 WO2019081112A1 (fr) 2017-10-24 2018-09-06 Dispositif de refroidissement d'un stator d'une machine électrique d'un véhicule automobile, stator et véhicule automobile

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EP3701620A1 true EP3701620A1 (fr) 2020-09-02

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EP18769315.5A Withdrawn EP3701620A1 (fr) 2017-10-24 2018-09-06 Dispositif de refroidissement d'un stator d'une machine électrique d'un véhicule automobile, stator et véhicule automobile

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US (1) US11646621B2 (fr)
EP (1) EP3701620A1 (fr)
CN (2) CN111052552A (fr)
DE (1) DE102017218933A1 (fr)
WO (1) WO2019081112A1 (fr)

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WO2019081112A1 (fr) 2019-05-02
US11646621B2 (en) 2023-05-09
US20200227965A1 (en) 2020-07-16
CN115995903A (zh) 2023-04-21
CN111052552A (zh) 2020-04-21
DE102017218933A1 (de) 2019-04-25

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