CN109936226A - Stator and motor with cooling system - Google Patents
Stator and motor with cooling system Download PDFInfo
- Publication number
- CN109936226A CN109936226A CN201811523649.6A CN201811523649A CN109936226A CN 109936226 A CN109936226 A CN 109936226A CN 201811523649 A CN201811523649 A CN 201811523649A CN 109936226 A CN109936226 A CN 109936226A
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- China
- Prior art keywords
- stator
- cooling duct
- wall portion
- cooling
- motor
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- 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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to a kind of stators (1) for being used for motor (2), it is with stator core (3), the stator core extends around the stator longitudinal axis (4) of stator (1) and along stator longitudinal axis (4), wherein, stator core (3) has multiple stator tooths (5), the stator tooth is distributed ground arrangement in the peripheral direction of stator (1) and extends towards stator longitudinal axis (4) and along stator longitudinal axis (4), wherein, it is configured with stator slot (6) respectively between adjacent stator tooth (5).The cooling duct wall portion (7) of stator (1) is so disposed between at least one stator slot (6) and stator tooth (5) adjacent at least one stator slot (6), so that construction is parallel to the cooling duct (8) of stator longitudinal axis (4) extension between cooling duct wall portion (7) and stator tooth (5).In addition, the present invention relates to a kind of motor (2), with such stator (1).
Description
Technical field
The present invention relates to a kind of coolable stators for motor.In addition, having should the present invention relates to a kind of motor
The stator of type.
Background technique
Motor usually has rotor, and the rotor is by stator surrounding.Stator has stator base (Statorgrundk rper)
Or with stator tooth (Statorzahn) and stator slot (Statornut) stator core (Statorblech, otherwise referred to as
Stator core), wherein stator slot is arranged between stator tooth.Stator winding is disposed with around stator tooth and in stator slot
(Statorwicklung), the stator winding in most cases coil to be formed by the twisted wire to insulate (Litze)
(Spule) form is realized.These coils are respectively provided with the Ohmic resistance of determining quality and determination, pass through twisted wire
Material, length and cross section determine.By material define twisted wire density and specific Ohmic resistance.Coil
One coiler part be arranged in stator slot and therefore formed stator winding activating part (aktiven Teil, otherwise referred to as
Driver unit).Another coiler part forms the winding head (Wickelkopf) of motor and is in most cases arranged in motor
At axial end side.The coiler part is also referred to as winding head part (Wickelkopfanteil).The power density of motor depends on
In coil construction, particularly depend on the diameter of twisted wire and the quantity of stator winding.
Motor emerged in operation with the power loss of the form of heat loss (Verlustw rme)
(Verlustleistung).The power density of electric drive particularly depends on the operating temperature of motor and power electric device.Electricity
The overheat (such as due to heat loss) of machine leads to the reduction of power density and furthermore may cause the lasting damage at motor.Example
Such as, may be damaged by the insulating layer of the twisted wire of excessively high temperature stator winding and therefore cause adjacent twisted wire it
Between short circuit.
In order to avoid excessively heating and overheating, many motors have the cooling device for heat extraction (Entw rmung).
Perhaps cooling system is that known its is for example especially configured to cooling stator or rotor to many different cooling devices.?
Cooling in the situation of cooling device for cooling down the stator of motor, substantially in the heat extraction of the activating part for stator winding
It is distinguished between the cooling device of the heat extraction of device and the winding head for motor.
The cooling device of the heat extraction of the known activating part for stator winding often has with the cold of cooling structure
But (K ü hlmantel) is covered, which surrounds stator.Therefore, coolant jacket is arranged in the region of the stator back iron of stator.It should
Cooling such as Yi Shui, oil, water-ethylene glycol-mixture or the like are realized.It is indirect cooling herein, because coolant jacket does not have
There is the direct contact of relative stator winding.The cooling of winding head is not realized in most cases.Therefore, such cooling device is outstanding
It is suitable for the cooling motor with relatively small winding head part, i.e. biggish structure length.In such cooling dress
Disadvantageously heat loss passes through stator slot from the heat discharge (W rmeabtransport) in stator winding in the situation set
Electric insulation part is realized by stator core and by the separation seam between stator core and coolant jacket towards cooling fluid.Therefore,
Heat loss must overcome multiple thermal boundarys and hinder or resistance.This causes the attached of the effective power (Leistungsf higkeit) of motor
Add limitation.
The cooling device of the heat extraction of winding head for motor be often configured to directly with fluid, especially oil sprinkling winding
Head.Direct cooling of the stator winding at winding head is realized in this way, wherein does not realize the cooling of stator, especially stator core.
Therefore, these cooling devices are especially suitable for cooling long with relatively high winding head part, i.e. relatively short structure
The motor of degree.
A kind of cooling system for motor as known to 10 2,011 053 299 A1 of file DE, fixed in the motor
It is configured with cooling duct in sub- core, which is tangential to fixed radially along stator tooth and between adjacent stator slot
Sub- longitudinal axis extends.These cooling ducts have as a drawback that, that is, thus lose the relatively large region of stator winding.This
Outside, flow channel and flow pass are provided in stator back iron, thus the power density of motor reduces.
10 2,011 056 007 A1 of file DE discloses a kind of cooling system for motor, in the cooling system
The coldplate (K ü hlblech) with the cooling duct radially extended is disposed between adjacent stator core.Such construction
It is extremely complex and can only manufactures with expending.
10 2,012 217 711 A1 of file DE indicates a kind of motor with cooling system, has triangle wherein
The cooling duct construction of shape cross section is in the perfusion materia (Vergussmasse) around stator winding.Therefore, cooling duct cloth
It sets between two stator tooth sections.Effective cooling of remaining stator region is not ensured using such cooling system.
A kind of electric machine as known to 10 2,014 017 745 A1 of file DE, cooling device is arranged in the electric machine
The stator slot is closed in stator slot and in unilateral side.The motor has as a drawback that, that is, the quantity and/or stator of stator winding are carried on the back
Thus the size of iron is reduced significantly.
Summary of the invention
Therefore, the task of the present invention is the elimination in a kind of stator for motor and a kind of situation of motor or at least
Partially remove disadvantages described above.Following task especially of the invention, that is, create a kind of stator for motor and one
Kind motor, in the form of simple and cost-effective and mode is close in previously given structure space and previously given power
Ensure the improved cooling of stator in the situation of degree.
Task above is realized by Patent right requirement.Therefore, which has independent claims 1 by a kind of
Feature stator and solved by a kind of motor of feature with claim 8 arranged side by side.It is of the invention other
Feature and details are obtained by dependent claims, specification and drawing.Here, be described in conjunction with stator according to the present invention
Obviously vice versa for and difference applicable also in conjunction with motor according to the present invention for feature and details, thus about for each invention
The disclosure of aspect can be referred to mutually always.
According to the first aspect of the invention, which is solved by a kind of stator for motor.The stator has stator
Core, the stator core extend around the stator longitudinal axis of stator and along stator longitudinal axis.Stator core has multiple stator tooths, institute
Stator tooth is stated to arrange with being distributed in the peripheral direction of stator and extend towards stator longitudinal axis and along stator longitudinal axis.?
It is configured with stator slot respectively between adjacent stator tooth.According to the present invention, at least one stator slot and adjacent at least one
The cooling duct wall portion of stator is so disposed between the stator tooth of stator slot so that cooling duct wall portion and stator tooth it
Between construction be parallel to stator longitudinal axis extension cooling duct.
Stator core is preferably manufactured by electrical sheet (Elektroblech, otherwise referred to as electrical with steel plate) and preferably
With the alloy being made of iron and silicon.Preferably, electrical sheet is manufactured by cold rolling (Kaltwalzen).Stator core is preferably
By largely it is especially coaxially arranged it is being connected to each other, especially be bonded and the stator chip that is electrically insulated from each other
(Statorblechscheibe) it is composed.Preferably, stator chip is bonded to each other by means of packet paint (Backlack).Alternatively
Ground, stator core can equally be manufactured by means of a kind of increasing material manufacturing method, wherein the part electrical isolation of stator longitudinal axis section is excellent
Choosing, in order to avoid the vortex (Wirbelstrom) across stator.
Stator longitudinal axis is preferably consistent in the situation of the rotor of loading with rotor longitudinal axis.Stator core is vertical around stator
Axis extends and has the free space in the center in the region of stator longitudinal axis for accommodating rotor.Therefore, stator core
Cross section (other than stator slot, cooling duct and analog) preferably in circular ring shape or substantially be in annular configuration.
In addition, stator core extends along stator longitudinal axis, so that stator core (other than stator slot, cooling duct and analog) is preferred
Ground is in hollow cylindrical configuration in hollow cylinder or substantially.
Stator tooth via its common stator back iron that stator tooth is connected to each other towards stator longitudinal axis preferably by prolonging
It stretches and is terminated at the free space in the center for accommodating rotor.Stator tooth is preferably regular in the peripheral direction of stator
Ground is especially evenly distributed.In the end for facing stator longitudinal axis, stator tooth preferably has stator tooth head, the stator tooth
Head has bigger width compared to remaining region of stator tooth.Remaining region of stator tooth preferably has constant or at least
The width of constant.
The stator slot with slot inner wall part is configured between adjacent stator tooth.Stator slot has preferably passed through segmentation effect
Manufacturing method (as being for example punched, being cut by laser or similar) manufacture.Preferably, the cloth on the slot inner wall part for sealing
It is equipped with and (is especially sprayed with) adhesive phase or paint layer.This is especially in the stator core being composed of the stator chip not being bonded to each other
Situation in be advantageous.
Stator winding is preferably arranged in stator slot, wherein stator winding preferably has twisted route
(Litzenleitung).Twisted route has a large amount of single wire rods, the single wire rod be closely bundled together by common
Insulation sleeve is surrounded and is therefore insulated radially outward.Single wire rod preferably each other twisting (verdrillen).In stator slot
Stator winding preferably form the activating part of stator winding.Remaining stator winding being arranged at the end side of stator is preferred
Ground forms winding head.
Cooling duct wall portion preferably has the material with the particularly advantageous or high capacity of heat transmission, in order to improve
Or not excessively heat exchange of the obstruction between cooling fluid (such as such as water, oil or the like) and stator winding.Preferably, cold
But channel wall portion one-piece and may move into stator core and construct.Therefore, the easy of cooling duct wall portion is assembled
Property is ensured that.In addition, cooling duct wall portion is preferably electrically insulated on the side in face of stator winding, in particular by means of insulating paper
(Isolationspapier) or the like adhered layer or paint layer.The insulation division is preferably equally with relatively high thermally conductive
Ability, in order to improve or do not hinder excessively the heat exchange between cooling fluid and stator winding.Therefore, relatively thin bonding
Oxidant layer or paint layer are preferred as the insulation division of cooling duct wall portion.
Cooling duct wall portion preferably surrounds stator slot by multiple sides, to construct on multiple sides of stator slot cooling logical
Road.Via cooling duct wall portion, cooling duct preferably relative stator slot is sealed, to avoid cooling fluid into stator slot
Intrusion.It is preferred as follows for this reason, that is, cooling duct is sealed relative to stator core, such as example in stator core
Slot in be guided and/or mutually be bonded with stator core or similar.Cooling duct is divided into multiple coolings according to the present invention
Channel, the cooling duct extend with being preferably parallel to one another along stator longitudinal axis.
At stator winding stator slot preferably so be arranged on, so that stator winding is supported at the wall portion of cooling duct.
Preferably, stator slot is separated by means of annular or two sseparated cooling duct wall portions and the stator tooth of direct neighbor, thus
Stator slot is surrounded in cooling duct two sides.Preferably, the end in face of stator back iron of stator slot equally passes through cooling duct
Wall portion limitation, to be configured with cooling duct between stator back iron and stator slot.It is preferred as follows, that is, cooling duct wall
Portion towards stator geosynclinal convex or at least constructs slightly convexly, avoids to be arranged in the situation in stator slot in stator winding
Bending of the cooling duct wall portion towards adjacent stator tooth.Can ensure that in this way as follows, that is, cooling duct arrangement stator around
It is not closed in the situation of group or is excessively narrowed.
Stator according to the present invention has the following advantages that relative to conventional stator, that is, with simple device and at
This suitable form and mode provide the cooling of stator, exist at the appearance position of the heat loss of stator, i.e. particularly near ground
It works at stator winding.Only small amounts of hot-fluid obstacle (W is disposed between wire rod and the cooling medium of cooling duct twisted
rmeflussbarrier).In this manner, stator can be by particularly efficiently heat extraction and the dimension of therefore previously given operating temperature
Holding can equally be ensured that in the situation of special high load.Furthermore it can cancel additional coolant jacket, so that stator slot can be increased
And stator back iron can be guided further by stator longitudinal axis outward in radial directions.The power density of stator can be mentioned as a result,
It is high.By means of stator according to the present invention, therefore the function of motor can be significantly improved in the situation of previously given structure space
Rate density and efficiency.
One kind according to the present invention is advantageously improved scheme (Weiterentwicklung), can make in the situation of stator
Following setting, that is, at least one is disposed between cooling duct wall portion and stator tooth for cooling duct wall portion relative to fixed
The supporting device of the support of sub- tooth.The supporting device is preferably configured to for cooling duct to be divided into multiple cooling ducts.It is excellent
Selection of land, cooling duct are configured to flow independently of one another with cooling fluid.Preferably, cooling duct wall portion is by means of multiple
Support device is supported against stator tooth.Supporting device is preferably so distributed, that is, when stator winding is arranged in cooling duct wall portion
When place, it is ensured that pressure distribution as uniform as possible.Preferably, supporting device is fastened at the wall portion of cooling duct or at least partly
Ground is integrally constructed with the cooling duct wall portion.Supporting device has the following advantages that, that is, is arranged in stator slot in stator winding
Situation in the bending of cooling duct wall portion towards stator tooth be avoided by or be at least substantially avoided by.
It is as follows preferred according to the present invention, that is, supporting device has electrical insulator or is configured to electrical insulator.Electrical isolation
Body is preferably at least arranged in supporting device in the contact area of adjacent stator tooth.As electrical insulator, such as bond
Agent, paint, resin, ceramics or the like are preferred.By means of electrical insulator, the electrical strength of stator can be further improved.
It is further preferred that cooling duct wall portion has substantially with the cross section in u shape or at least in the transversal of u shape
Face.Two supporting legs of cooling duct wall portion are preferably parallel to one another ground, substantially upwardly extend in the side of stator longitudinal axis.It is cooling logical
The end adjacent to stator longitudinal axis of road wall portion is preferably accommodated in the slot at adjacent stator tooth head and Fluid Sealing
Ground and preferred electrical isolation ground is sealed.In this manner, cooling duct wall portion can be fixed on easily and with simple device
Between two stator tooths.It is therefore preferred to only unlimited for the end side of stator and cooled fluid is close in other aspects for cooling duct
Feud sealing.Such cooling duct wall portion has the following advantages that, that is, it can be easy to manufacture and can be assembled in stator core
Place, particularly by the immigration into stator core.In addition, can provide cooling duct by means of the stator core so constructed, the cooling
Channel surrounds stator slot by three sides and therefore surrounds stator winding.It is had the following advantages that in the cross section of u shape, that is, can be obtained with this
Obtain the particularly efficient heat extraction and readily assembly of stator winding.
It in a kind of particularly preferred design scheme of the invention, can be set as follows in the situation of stator, that is, cooling
Channel wall portion has protuberance at least one portion section.Protuberance structure preferably on the direction of the stator tooth of indirect neighbor
Make, thus in the partial sector cooling duct wall portion in face of stator slot side lowland and cooling duct wall portion face stator
The side of tooth constructs convexly.The protuberance preferably so constructs, so that at least one twisted wire rod may be arranged in protuberance.It is preferred that
Ground, multiple twisted wire rods may be arranged in protuberance.It is also preferable that cooling duct wall portion has multiple such protuberances, it is described
Protuberance especially equably or is regularly distributed in the wall portion of cooling duct.It furthermore is preferred as follows, that is, cooling duct wall
Adjacent stator tooth is touched in the region of protuberance and is therefore configured to supporting device in portion.This has the following advantages that, that is, additional
Supporting device can be cancelled.Preferably, cooling duct wall portion is electrically insulated at the touching position with stator tooth.The protuberance has
Following advantage, that is, can get with this between cooling duct wall portion and stator winding and in cooling duct wall portion and cooling stream
The increase of contact surface between body.The heat transmitting between twisted wire rod and cooling fluid can be improved in this way and therefore may be used
Improve the cooling capacity of stator.
It is preferred as follows, that is, cooling duct wall portion is at least one portion section with the cross section of indention
Or wavy cross section.Preferably, cooling duct wall portion contacts adjacent stator tooth at wave crest or spike.Herein such as
Under be preferred, that is, cooling duct wall portion is electrically insulated at contact position.Such cross section has the following advantages that, that is, cold
But therefore channel wall portion has the biggish surface for the heat exchange between twisted wire rod and cooling fluid.In addition, in this way
Cooling duct wall portion with higher prevent curved rigidity.In addition, additional supporting device can be cancelled.
Preferably, cooling duct wall portion is integrally constructed with stator core.Cooling duct wall portion preferably passes through electrical sheet
Removal (such as pass through punching, laser cutting or similar) of the material in the region of cooling duct constructs.Alternatively, it has
The stator core of cooling duct wall portion can be manufactured by means of increasing material manufacturing method.Therefore, with integrated cooling duct and collection
At the stator core of cooling duct wall portion can with simple device and cost-effective manufacture.Cooling duct wall portion for
The additional seal of stator core is unwanted due to whole construction.
According to the second aspect of the invention, which is solved by a kind of motor with rotor and the stator for surrounding rotor
Certainly, wherein stator structure is at stator according to the present invention.Rotor is constructed advantageously according to the convention rotor of conventional motor.It is excellent
Selection of land, rotor equally have the cooling duct for directly cooling down rotor.
The cooling duct of stator can be for example loaded via the common cooling fluid supply of motor with cooling fluid.This
Outside, motor preferably has cooling fluid discharge, can be from the cooling duct of motor via cooling fluid discharge cooling fluid
It is discharged.Alternatively, the motor for cooling duct has individual cooling fluid supply line and cooling fluid discharge pipe
Road, so that each cooling channels can be loaded with cooling fluid independently of one another.By means of in the region of cooling duct
Temperature sensor and suitably control electronic device, therefore can realize the targeted heat extraction of stator.
The institute being described for stator according to the first aspect of the invention is obtained in the situation of described motor
There is advantage.Therefore, motor according to the present invention has the following advantages that relative to known motor, that is, with simple device and
In the form of cost-effective and mode provides the cooling of stator, particularly near ground at the appearance position of the heat loss of stator,
Work at stator winding.A small amount of hot-fluid obstacle is only disposed between wire rod and the cooling medium of cooling duct twisted.
In this manner, stator can by particularly efficiently heat extraction and therefore the maintenance of the previously given operating temperature of motor equally special
It can be ensured that in the situation of high load.In addition, the additional coolant jacket for surrounding stator can be cancelled in the situation of motor, depending on
Pilot trench can be increased and stator back iron can be guided further by stator longitudinal axis outward in radial directions.Thus motor can be improved
Power density.Motor according to the present invention is in the situation of previously given structure space relative to alternative cooling system
The conventional motor of system has the power density significantly improved and the efficiency significantly improved.
It is preferred as follows, that is, be disposed with insulating paper on the side of stator slot in cooling duct wall portion.The insulating paper
Cooling duct wall portion is provided for the electrical isolation of stator winding and improves electricity in an advantageous manner and with simple device
The electrical strength of machine.
Preferably, motor at least one first end side have first end cover (Abschlussdeckel, sometimes referred to as
For sealing cover), wherein first end cover so covers stator, so that cooling duct is sealed towards the first end side.It is further excellent
Selection of land, motor have second end cover at the second end side, which so covers stator, so that cooling duct is towards the
Two end sides are sealed.First end cover preferably has the inflow part (Zulauf) for supplying cooling fluid, wherein the inflow part
It is connected with cooling duct fluid flow communication and opposite ambient enviroment is sealed.Second end cover preferably has cold for being discharged
But the outflow portion (Ablauf) of fluid, wherein the outflow portion and cooling duct fluid flow communication are connected and relative to surrounding
Environment is sealed.Alternatively, first end cover has inflow part and outflow portion.It is preferred as follows in this case, that is, second end
Cooling duct is connected and ambient enviroment is sealed by lid with being in fluid communication with each other.End cap so constructs, so that fluid stream passes through
Motor can pass through fluid channel by inflow part and be directed to towards outflow portion, wherein evolution of the cooling fluid in motor is preferably
It is avoided by.Preferably, end cap configuration is electrically insulated at electrical insulator or at least relative to stator core and/or stator winding.
Detailed description of the invention
Stator according to the present invention and motor according to the present invention are then act through drawing and more specifically explain.Wherein distinguish
Schematically:
Fig. 1 shows the part of motor according to prior art with the view of perspectivity,
Fig. 2 illustrates in plan view the part of the preferred first embodiment of stator according to the present invention,
Fig. 3 illustrates in plan view the part of the amplification from Fig. 2,
Fig. 4 shows the part of the first end side of the stator from Fig. 2 with sealing device with the view of perspectivity,
Fig. 6 illustrates in plan view the part of the preferred second embodiment of stator according to the present invention,
Fig. 7 illustrates in plan view the part of the preferred third embodiment of stator according to the present invention,
Fig. 8 shows a kind of preferred embodiment of motor according to the present invention with side view.
Element with identical function and working principle is respectively equipped with identical reference symbol in Fig. 1 to 8.
List of numerals
1 stator
2 motors
3 stator cores
4 stator longitudinal axis
5 stator tooths
6 stator slots
7 cooling duct wall portions
8 cooling ducts
9 supporting devices
10 protuberances
11 rotors
12 insulating papers
13 first end sides
14 first end covers
15 stator back irons
16 coolant jackets
17 stator winding
18 winding heads
19 stator tooth heads
20 holding tanks
21 sealing elements
22 second end sides
23 second end covers
24 coolant flow incoming interfaces
25 coolant flow outgoing interfaces.
Specific embodiment
The part of motor 2 according to prior art is schematically shown with the view of perspectivity in Fig. 1.Motor 2 has
There is rotor 11, which is surrounded by stator 1.Stator 1 has the stator core 3 with a large amount of stator slots 6 and stator back iron 15.?
Stator winding 17 is disposed in stator slot 6, the stator winding forms winding head 18 outside stator slot 6.Separate in stator 1 turns
The outer surface that son 11 is directed toward is disposed with the coolant jacket 16 with multiple cooling ducts 8.Stator winding 17 is especially in stator slot 6
It is efficient it is cooling using such motor 2 be infeasible.
Fig. 2 schematically illustrates in plan view the part of the preferred first embodiment of stator 1 according to the present invention.
The part of the amplification from Fig. 2 is shown in Fig. 3.Stator 1 has to be determined with multiple stator tooths 5 and connecting stator tooth 5
The stator core 3 of sub- back iron 15.Stator slot 6 is respectively disposed between adjacent stator tooth 5.Between stator slot 6 and stator core 3
It is disposed with cooling duct wall portion 7, which is supported via multiple supporting devices 9 against stator core 3.Cooling duct
Wall portion 7 is maintained in the holding tank 20 of two adjacent stator tooth heads 19 of the stator tooth 5 of stator core 3 and against stator core 3
It is sealed.Multiple cooling ducts 8 are configured between cooling duct wall portion 7 and stator core 3, the cooling duct passes through eyelid retractor
Part 9 is separated from each other.Alternatively, cooling duct 8 equally can fluid flow communication be associated with one another connects or formed common cooling duct
8.Cooling duct 8 is configured to cooling fluid, passing through for such as such as water, oil or the like guides.It is fixed to be disposed in stator slot 6
Sub- winding 17, the stator winding are supported against cooling duct wall portion 7.The cloth between cooling duct wall portion 7 and stator winding 17
It is equipped with the optional insulating paper 12 for electrical isolation.
View in Fig. 4 with perspectivity schematically shows the part of the first end side 13 of the stator 1 from Fig. 2.
The sealing element 21 of annular is disposed in the region of stator back iron 15.In addition, sealing element 21 is arranged in the end of cooling duct wall portion 7
At side.Sealing element 21 is configured to the sealing relative to first end cover 14 (referring to Fig. 5) not shown here, cold in order to avoid
But fluid is from the unintentionally evolution in stator 1.
Fig. 5 shows the stator 1 from Fig. 4 with end cap 14,23 schematically with the view of perspectivity.In stator core
First end cover 14 is disposed at 3 the first end side 13 and is sealed via sealing element 21.Therefore, coolant flow incoming interface 24 with
8 fluid flow communication of cooling duct being occluded in the view is connected and opposite ambient enviroment is sealed.23 cloth of second end cover
It sets on the second end side 22 of stator core 3 and is sealed via sealing element 21.Therefore, coolant flow outgoing interface 25 in the view
In 8 fluid flow communication of cooling duct that is occluded be connected and opposite ambient enviroment is sealed.Therefore, coolant flow incoming interface
24 and coolant flow outgoing interface 25 be connected to each other via 8 fluid flow communication of cooling duct.Coolant flow incoming interface 24 and cooling
Agent outflow interface 25 is preferably configured to be connected at the unshowned coolant pump with coolant cooling device.
Fig. 6 schematically illustrates in plan view the part of the preferred second embodiment of stator 1 according to the present invention.
The stator 1 of second embodiment is different from approximately through the overall construction of stator core 3, cooling duct wall portion 7 and supporting device 9
One embodiment.Such stator core 3 can be particularly easy to and cost-effective manufacture and the installation step that makes stator 1
Reduction is possibly realized, because eliminating the additional assembly of cooling duct wall portion 7.
The preferred third embodiment of stator 1 according to the present invention is schematically depicted with top view in Fig. 7
Part.The stator 1 of third embodiment is substantially structurally different from first embodiment in cooling duct wall portion 7.It is cooling logical
Road wall portion 7 has the wave-like with multiple protuberances 10, wherein protuberance 10 is configured to supporting device 9 and cooling duct wall portion 7
It is supported against stator core 3.A part of stator winding 17 is arranged in protuberance 10, and another part of stator winding 17 is arranged in
In remaining region of stator slot 6.Cooling duct 8 is configured between two protuberances 10 and stator core 3.
Fig. 8 schematically shows a kind of preferred embodiment of motor 2 according to the present invention with side view.Motor 2
With rotor 11, which is surrounded by stator 1 according to the present invention.Stator 1 and rotor 11 are coaxially arranged in stator longitudinal axis 4.
Coolant flow incoming interface 24 is disposed at the first end side 13 of motor 2.In the second end of the motor 2 in contrast to the first end side 13
Coolant flow outgoing interface 25 is disposed at side 22.
Claims (10)
1. one kind is used for the stator (1) of motor (2), which has stator core (3), and the stator core is around the stator (1)
Stator longitudinal axis (4) and along the stator longitudinal axis (4) extend, wherein the stator core (3) have multiple stator tooths
(5), the stator tooth ground arrangement is distributed in the peripheral direction of the stator (1) and towards the stator longitudinal axis (4) and
Extend along the stator longitudinal axis (4), wherein it is configured with stator slot (6) respectively between adjacent stator tooth (5),
It is characterized in that,
It is so arranged between at least one stator slot (6) and stator tooth (5) adjacent at least one stator slot (6)
There is the cooling duct wall portion (7) of the stator (1), so that the structure between the cooling duct wall portion (7) and the stator tooth (5)
It makes and is parallel to the cooling duct (8) that the stator longitudinal axis (4) extends.
2. stator (1) according to claim 1, which is characterized in that in the cooling duct wall portion (7) and the stator tooth
(5) at least one eyelid retractor for support of the cooling duct wall portion (7) relative to the stator tooth (5) is disposed between
Part (9).
3. stator (1) according to claim 2, which is characterized in that the supporting device (9) has electrical insulator or construction
At electrical insulator.
4. stator (1) according to any one of the preceding claims, which is characterized in that cooling duct wall portion (7) tool
Have in the cross section of u shape or at least with the cross section for being substantially in u shape.
5. stator (1) according to any one of the preceding claims, which is characterized in that the cooling duct wall portion (7) exists
There is protuberance (10) at least one portion section.
6. stator (1) according to claim 5, which is characterized in that the cooling duct wall portion (7) it is described at least one
With the cross section or wavy cross section of indention in partial sector.
7. stator (1) according to any one of the preceding claims, which is characterized in that the cooling duct wall portion with it is described
Stator core integrally constructs.
8. one kind has rotor (11) and surrounds the motor (2) of the stator (1) of the rotor (11), which is characterized in that described fixed
Sub (1) is according to claim 1 to any one of 7 constructions.
9. motor (2) according to claim 8, which is characterized in that in the cooling duct wall portion (7) in face of described fixed
Insulating paper (12) are disposed on the side of pilot trench (6).
10. motor (2) according to claim 8 or claim 9, which is characterized in that the motor (2) is at least one the first end side
(13) there are first end cover (14) at, wherein the first end cover (14) so covers the stator (1), so that the cooling
Channel (8) is sealed towards first end side (13).
Applications Claiming Priority (2)
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| DE102017222635.8 | 2017-12-13 | ||
| DE102017222635.8A DE102017222635A1 (en) | 2017-12-13 | 2017-12-13 | Stator and electric machine with cooling system |
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| CN109936226A true CN109936226A (en) | 2019-06-25 |
| CN109936226B CN109936226B (en) | 2022-08-09 |
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| DE (1) | DE102017222635A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220320929A1 (en) * | 2021-04-06 | 2022-10-06 | Hamilton Sundstrand Corporation | Aircraft electric motor |
| US11851196B2 (en) | 2021-04-06 | 2023-12-26 | Hamilton Sundstrand Corporation | Aircraft electric motor |
| WO2024128162A1 (en) * | 2022-12-13 | 2024-06-20 | 日本ガスケット株式会社 | Method for manufacturing motor core, motor core, and motor comprising motor core |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017220123A1 (en) * | 2017-11-13 | 2019-05-16 | Audi Ag | Groove wall insulation for a stator of an electric motor |
| DE102020130987A1 (en) | 2020-01-24 | 2021-07-29 | Schaeffler Technologies AG & Co. KG | Method for producing a component of an electric motor, an electric motor component and an electric motor |
| DE102020109211A1 (en) | 2020-04-02 | 2021-10-07 | Schaeffler Technologies AG & Co. KG | Power-generating component of a rotary electric machine and a rotary electric machine |
| DE102020113047A1 (en) | 2020-05-14 | 2021-11-18 | Schaeffler Technologies AG & Co. KG | Electric motor component and method for manufacturing an electric motor component of an axial flux motor |
| EP3955424A1 (en) * | 2020-08-10 | 2022-02-16 | Siemens Aktiengesellschaft | Dynamo-electric machine with liquid cooling |
| DE102021113225A1 (en) | 2021-05-21 | 2022-11-24 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Stator device for an electrical machine |
| DE102021113227A1 (en) | 2021-05-21 | 2022-11-24 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Stator for an electrical machine, electrical machine, motor vehicle, method for producing a stator |
| FR3128332A1 (en) * | 2021-10-15 | 2023-04-21 | Novares France | Wound rotor for electric motor equipped with a cooling circuit |
| DE102021211923A1 (en) | 2021-10-22 | 2023-04-27 | Zf Friedrichshafen Ag | Stator for an electric machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB724506A (en) * | 1952-08-30 | 1955-02-23 | Gen Electric | Improvements in and relating to dynamo-electric machines |
| US4994700A (en) * | 1990-02-15 | 1991-02-19 | Sundstrand Corporation | Dynamoelectric machine oil-cooled stator winding |
| KR20140134794A (en) * | 2013-05-14 | 2014-11-25 | 두산중공업 주식회사 | Stator and superconducting rotating machine having the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1251624T3 (en) * | 2001-04-20 | 2009-04-20 | Converteam Ltd | Cooling of air gap winding in electric machines |
| JP3791428B2 (en) * | 2002-02-22 | 2006-06-28 | 日産自動車株式会社 | Stator structure of rotating electrical machine |
| DE102009009819A1 (en) * | 2009-02-20 | 2010-08-26 | Sensor-Technik Wiedemann Gmbh | Laminated stator core for electrical machine, has cooling ducts formed in helical-shape and running in core around central axis by shifting arrangement of cooling holes that are formed in outer boundary region of stator plates |
| DE102011056007A1 (en) | 2010-12-08 | 2012-06-14 | Antriebstechnik Katt Hessen Gmbh | Cooling system for a rotating electrical machine of highest power density |
| US9729020B2 (en) * | 2011-03-22 | 2017-08-08 | Hamilton Sundstrand Corporation | Motor stator having channels used for cooling and method of providing the channels |
| DE102011053299A1 (en) | 2011-09-06 | 2013-03-07 | Antriebstechnik Katt Hessen Gmbh | Cooling system for a highly used high-speed rotating synchronous electric machine |
| DE102012217711A1 (en) | 2012-09-28 | 2014-04-03 | Magna Powertrain Ag & Co. Kg | Electric machine with cooling |
| DE102014213159A1 (en) * | 2014-07-07 | 2016-01-07 | Deere & Company | Arrangement for stator cooling of an electric motor |
| DE102014017745A1 (en) | 2014-12-01 | 2016-06-02 | Compact Dynamics Gmbh | Slot closure of an electric machine and electric machine |
| DE102016222331A1 (en) * | 2016-11-14 | 2018-05-17 | Bayerische Motoren Werke Aktiengesellschaft | Stator for an electrical machine, in particular a motor vehicle, as well as an electric machine, in particular for a motor vehicle |
-
2017
- 2017-12-13 DE DE102017222635.8A patent/DE102017222635A1/en active Pending
-
2018
- 2018-12-13 CN CN201811523649.6A patent/CN109936226B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB724506A (en) * | 1952-08-30 | 1955-02-23 | Gen Electric | Improvements in and relating to dynamo-electric machines |
| US4994700A (en) * | 1990-02-15 | 1991-02-19 | Sundstrand Corporation | Dynamoelectric machine oil-cooled stator winding |
| KR20140134794A (en) * | 2013-05-14 | 2014-11-25 | 두산중공업 주식회사 | Stator and superconducting rotating machine having the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220320929A1 (en) * | 2021-04-06 | 2022-10-06 | Hamilton Sundstrand Corporation | Aircraft electric motor |
| US11811268B2 (en) * | 2021-04-06 | 2023-11-07 | Hamilton Sundstrand Corporation | Aircraft electric motor |
| US11851196B2 (en) | 2021-04-06 | 2023-12-26 | Hamilton Sundstrand Corporation | Aircraft electric motor |
| WO2024128162A1 (en) * | 2022-12-13 | 2024-06-20 | 日本ガスケット株式会社 | Method for manufacturing motor core, motor core, and motor comprising motor core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109936226B (en) | 2022-08-09 |
| DE102017222635A1 (en) | 2019-06-13 |
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