CN109194037A - A kind of oil-cooled motor can isolate motor stator, rotor place space - Google Patents
A kind of oil-cooled motor can isolate motor stator, rotor place space Download PDFInfo
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- CN109194037A CN109194037A CN201811273915.4A CN201811273915A CN109194037A CN 109194037 A CN109194037 A CN 109194037A CN 201811273915 A CN201811273915 A CN 201811273915A CN 109194037 A CN109194037 A CN 109194037A
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- stator
- oil
- distance sleeve
- rotor
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
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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 invention discloses a kind of oil-cooled motors that can isolate motor stator, rotor place space, distance sleeve component 5 is arranged in air gap 6 between motor stator 1 and rotor 3, distance sleeve 501 is the cylinder-like structure that one side is equipped with rib 504, distance sleeve rib 504 is inserted into the stator rabbet 104 between motor adjacent stators tooth 102, distance sleeve 501 does not set between the side of rib 504 and rotor 3 that there are air gaps 6,501 both ends of distance sleeve connect distance sleeve end support 502, and both ends are only butted on electric motor end cap 402 respectively for distance sleeve end support 502.The present invention can be effectively isolated motor stator and rotor, allow in stator slot 103 space to be passed directly into cooling oil and directly oil is cold is realized to winding 2 and stator tooth 102, to realize that motor stator 1 and the direct oil of winding 2 are cold, power density, torque density and the reliability of motor are improved.
Description
Technical field
The present invention relates to power electronics and technical field of motors more particularly to one kind can isolate motor stator, rotor institute
Oil-cooled motor in space.
Background technique
Traditional fluid-cooled electrical machine is fixed by being installed on such as common inner rotor motor by the way of cooling down indirectly
The coolant jacket of sub- periphery wall cools down motor, coolant jacket be only capable of directly contact motor stator yoke, machine winding and
The cooling effect at other positions of stator is poor, limits the promotion of power of motor density, torque density and reliability.As can adopting
With the mode that direct oil is cold, the cooling oil of insulation is passed through motor inner space, can be greatly promoted with directly cooled machine winding
The performance of motor.However cooling oil cannot contact high-speed rotating rotor, otherwise can bring great churning loss, reduce motor
Efficiency, reliability service is influenced, for this reason, it may be necessary to a kind of oil-cooled motor that can isolate motor stator, space where rotor.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes that one kind can
Motor stator is isolated, the oil-cooled motor in space where rotor, in which: the oil-cooled motor include stator 1, winding 2, rotor 3,
Electric machine casing 4 and distance sleeve component 5 etc.；The stator has the structures such as stator yoke 101 and stator tooth 102,101 edge of stator tooth
It is circumferentially distributed in stator yoke 102, forms stator slot 103 between stator tooth 101, there is stator slot between two adjacent stators teeth 101
Mouth 104；The electric machine casing 4 includes stator case 401, rotor case or rotor of output shaft axle 403, end cap 402, the stator case
Body 401 is connect with the stator yoke 102；
The distance sleeve component 5 includes distance sleeve 501 and distance sleeve end support 502；
It is characterized in that, the distance sleeve 501 is located between the stator 1 and the rotor 3 of the oil-cooled motor
Air gap 6 in, the both ends of the distance sleeve 501 connect the distance sleeve end support 502, distance sleeve end branch
It supports 502 both ends and is only butted on the end cap 402 respectively.
Preferably, the oil-cooled motor is inner rotor motor or external rotor electric machine
Preferably, be distributed along the circumference on one side along the distance sleeve towards the stator 1 of the distance sleeve 501
501 axially extending distance sleeve ribs 504, each 504 two sides shape of distance sleeve rib and 104 shape of stator rabbet
Shape cooperation, each distance sleeve rib 504 are inserted into the stator slot 103；The distance sleeve 501 far from described fixed
There are one section of air gaps 6 between regular circle, with the rotor 3 for the one side of son 1.
Preferably, 501 material of distance sleeve be glass fibre or fibre reinforced synthetic resin matrix composite,
Its resin matrix is thermosetting resin.
Preferably, it is metal material that the distance sleeve end, which supports 502 materials,.
Preferably, the oil-cooled motor type of cooling cold using directly oil, the stator 1 are directly soaked with the winding 2
Bubble in cooling oil, import and export equipped with cooling oil by the end cap 402 of described certain one end of stator case 401 or the oil-cooled motor,
Cooling oil after the cooling oil-cooled motor of the cooling-oil inlet by cooling-oil outlet by being flowed out, on the one hand, cooling oil is logical
The cooling-oil inlet is crossed into sky defined by the distance sleeve component 5, the stator case 401 and the end cap 402
Between, cooling oil is passed through 103 space of stator slot, full of the cooling stator in space between the stator tooth 101 and the winding 2
Tooth 101 and winding 2；On the other hand, shaft orientation flowing channel is set close to 102 side of stator yoke in stator case 401, cooling oil passes through institute
It states the ring shaped oil passage set in stator case 401 or end cap 402 and enters the cooling stator yoke 102 of the shaft orientation flowing channel.Oil of the invention
Cool electric machine can be effectively isolated motor stator and rotor, realize that the direct oil of motor stator and winding is cold, the power for improving motor is close
Degree, torque density and reliability.
Detailed description of the invention
Fig. 1 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor distance sleeve with
The assembly relation cross-sectional view of motor stator, rotor；
Fig. 2 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor distance sleeve with
The assembly relation cross section Local map of motor stator, rotor；
Fig. 3 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor distance sleeve group
Part and motor stator, rotor, electric machine casing assembly relation vertical section Local map；
Fig. 4 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor stator be isolated
The assembly relation schematic diagram of sleeve；
Fig. 5 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor stator and rotor isolation
Sleeve assembly；
Fig. 6 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor stator and rotor isolation
One embodiment of sleeve assembly；
Fig. 7 be it is of the invention it is a kind of can isolate motor stator, rotor where the oil-cooled motor in space cut using different
The distance sleeve assembly relation cross section Local map of face shape；
Fig. 8 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor using seperated plus
The distance sleeve assembly relation cross section Local map of work mode；
Fig. 9 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor using seperated plus
The distance sleeve assembly relation cross section Local map of work mode；
Figure 10 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor external rotor electric machine
The stator and rotor distance sleeve and motor stator, rotor assembly relation cross-sectional view of embodiment；
Figure 11 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor external rotor electric machine
The stator and rotor distance sleeve and motor stator, rotor assembly relation cross section Local map of embodiment；
Figure 12 be it is of the invention it is a kind of can isolate motor stator, rotor where space oil-cooled motor external rotor electric machine
The distance sleeve component of embodiment.
Appended drawing reference in figure are as follows:
Stator 1, stator yoke 101, stator tooth 102, stator slot 103, stator rabbet 104；Winding 2；Rotor 3；Electric machine casing
4, stator case 401, end cap 402, rotor case/rotor of output shaft axle 403, shaft orientation flowing channel 404, annular runner 405, cooling oil into
Outlet 406；Distance sleeve component 5, distance sleeve 501, distance sleeve end support 502, distance sleeve thin-wall circular canister portion 503,
Distance sleeve rib 504, glue-line 505.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The word of embodiment and directionality below with reference to attached drawing description
It is exemplary, it is intended to be used to explain the present invention, and be not considered as limiting the invention.Based on the implementation in the present invention
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The scope of protection of the invention.The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present invention, it is to be understood that, term " inside ", " outside ", "center", " longitudinal direction ", " transverse direction ",
" length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom",
The orientation or positional relationship of the instructions such as " axial direction ", " radial direction ", " circumferential direction " is to be based on the orientation or positional relationship shown in the drawings, and is only
For the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, defining " first ", "
Two " feature can explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise
Illustrate, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
It describes according to an embodiment of the present invention to can isolate motor stator, space where rotor below with reference to Fig. 1-Fig. 9
Oil-cooled motor.
The oil-cooled motor according to an embodiment of the present invention that can isolate motor stator, rotor place space, such as Fig. 1-Fig. 3 institute
Show, oil-cooled motor includes stator 1, winding 2, rotor 3, electric machine casing 4 and distance sleeve component 5 etc.；Stator has stator yoke
The structures such as 101 and stator tooth 102, stator tooth 102 is evenly distributed to be formed between the interior direction of stator yoke 101, stator tooth 102
Stator slot 103, winding 2 are wrapped on stator tooth 102 and connect in the axial end portion of stator 1, and winding as the case may be can be with
Concrete shape for Distributed Winding or concentratred winding, stator slot 103 can be according to the needs of design of electrical motor index and application
It modifies, the end face of stator tooth 102 is that arc-shaped, its center of circle is located at electrical axis, and there are week in the end two sides of stator tooth 102
To the protrusion of stretching, stator rabbet 104 is formed between the end bosses of two adjacent stators teeth；Electric machine casing 4 includes stator case
401, rotor case 403 or rotor of output shaft axle 403, end cap 402, stator case 401 are cylinder-like structure, are coated at stator yoke
101, both ends connection end cap 402.
Distance sleeve component 5 includes distance sleeve 501 and distance sleeve end support 502.It is cold that distance sleeve 501 is located at oil
In air gap 6 between the stator 1 and rotor 3 of motor, the both ends connection distance sleeve end support 502 of distance sleeve 501, isolation
Sleeve ends support 502 both ends to be only butted on both ends end cap 402 simultaneously.
Specifically, the main structure of distance sleeve 501 is distance sleeve thin-wall circular canister portion 503, and periphery wall is circumferentially equal
It is furnished with the distance sleeve rib 504 axially extending along distance sleeve, each 504 two sides shape of distance sleeve rib and stator rabbet 104
Shape cooperation, i.e., corresponding with the end bosses shape of stator tooth 102, each distance sleeve rib 504 is inserted into stator slot 103, every
Fig. 2 and Fig. 4 is referred to from the matching relationship of sleeve rib 504 and stator slot 103.The internal perisporium shape of distance sleeve 501 is regular
There are one section of air gaps 6 between circle, with the rotor 3.503 outer diameter of thin-wall circular canister portion of distance sleeve 501 and 102 end of stator tooth
The arc diameter in face is identical, and the internal diameter of thin-wall circular canister portion 503 is slightly larger than the gabarit diameter of rotor 3.The shape of distance sleeve 501 is joined
Examine Fig. 5.It is understood that 501 adjacent rib 504 of distance sleeve and its between thin-wall circular canister portion 503 outer contour shape and phase
Adjacent stator rabbet 104 and its between 102 end-face circular shape of stator tooth match, realize the complete package of 1 inner end of stator,
The circumferentially positioned of distance sleeve 501 and fixed is realized, enhances the support stiffness of distance sleeve 501, and distance sleeve 501
Still there are certain thickness even air gaps 6 between 3 outer surface of inner surface and rotor, do not affect the normal rotation fortune of rotor 3
It is dynamic.Since the setting of distance sleeve rib 504 enhances the rigidity of distance sleeve 501, the thickness of thin-wall circular canister portion 503 is available
Control, less than the thickness of the original air gap of motor, does not need to modify original electric machine structure, tune in order to which distance sleeve component 5 is added
Sub 1 internal diameter or 3 outer diameter of rotor are adjusted, that is, haves no need to change the air gap 6 of original motor.In addition, in most of motor, stator
Blend stop is natively equipped at notch 104 prevents winding 2 from deviating from along the radial of stator 1 from stator rabbet 104, distance sleeve rib 504
Can play the role of blend stop simultaneously prevents winding 2 from deviating from.
Distance sleeve end support 502 includes the cylindrical portion that two thickness are thicker than distance sleeve 501, one of cylindrical portion
Internal diameter it is identical as the internal diameter of distance sleeve 501, thin-walled portion is outer between the outer diameter and distance sleeve rib 504 of another cylindrical portion
Diameter is identical, and the end face of the separate stator of two cylindrical portions is only butted on electric motor end cap 402.It is understood that such structure
It can be complete by the cylindrical space and rotor 3 that are formed between motor stator casing 401, end cap 402, distance sleeve component 5
It separates.
Preferably, it can be further fixed between distance sleeve 501 and stator 1 with gluing.
Specifically, 501 material of distance sleeve is insulation, heatproof is met the requirements and non-diamagnetic material, can use glass
Glass fiber or its resin matrix of fibre reinforced synthetic resin matrix composite are thermosetting resin, are resistant to higher temperature,
The composite material can select glass fiber-reinforced polyester, in the more demanding embodiment of some heatproofs, can select carbon
The materials such as fibre strengthening polyimides, resin matrix maximum operation (service) temperature is up to 280-315 DEG C.The support of distance sleeve end
502 materials are metal material.Certainly, the material of distance sleeve 501 is not limited to above-mentioned material, can also use plastics, nylon
It insulate with other satisfactions such as the composite materials of chopped strand, the non-diamagnetic material of heat resistance.Distance sleeve 501 and separation sleeve
Connection between cylinder end support 502 is the common connection type of splicing or other composite materials and metal material, according to specific
The case where embodiment, selects.
It is understood that the cross sectional shape of distance sleeve 501 is not limited to above structure, in some embodiments, every
Shape from 504 two sides of sleeve rib can stator rabbet 104 according to the actual situation change, in further embodiments, isolation
Sleeve 501 can require to be formed as the uniform thin-wall construction of section thickness, i.e. distance sleeve rib 504 according to material or processing technology
It can be hollow structure, as shown in Figure 7.
The distance sleeve 501 of above-described embodiment is by the way of being integrally machined, certainly, the processing method of distance sleeve 501
Be not limited to it is above-mentioned be integrally machined mode, in actual use can be according to the actual situation by the way of parts processing.
As shown in figure 8, distance sleeve rib 504 and thin-wall circular canister portion 503 are using after parts processing in some embodiments that can choose
The mode of splicing manufactures.As shown in figure 9, distance sleeve rib 504 can also be directly with fixed in some embodiments that can choose
The original blend stop of pilot trench mouth 104 replaces, and is connected to 503 periphery wall of thin-wall circular canister portion by thicker glue-line 505, in this reality
It applies in example, the root of original distance sleeve rib 504 is replaced by glue-line 505.It is seperated in distance sleeve 501 as illustrated in figs. 8-9
In the embodiment of processing, winding 2 is first axially inserted into distance sleeve rib 504 or stator rabbet around on the stator 1 later
104 blend stop is axially inserted into thin-wall circular canister portion 503 later, completes thin-wall circular canister portion 503 and distance sleeve rib 504 or blend stop
Splicing, glue-line 505 solidify after, can integrally soak insulated paint to further enhance insulation performance.
Using the motor of above-mentioned stator and rotor partition method, using the type of cooling that direct oil is cold, stator 1 and winding 2 are direct
It is immersed in cooling oil, the end cap 402 of certain one end of stator case 401 or motor is equipped with cooling oil inlet and outlet 406, and cooling oil is logical
It is flowed out after the cooling motor of supercooling oil inlet 406 by cooling-oil outlet 406.On the one hand, cooling oil passes through cooling-oil inlet 406
Into cylindrical space defined by distance sleeve component 5, stator case 401 and end cap 402, cooling oil is passed through stator slot 103
Space, and the other end is flowed to from one end, full of the cooling stator tooth 102 in space and winding 2 between stator tooth 102 and winding 2；
On the other hand, shaft orientation flowing channel 404 is set in 401 internal perisporium of stator case, 401 end cooling oil of stator case inlet and outlet 406 are attached
Ring shaped oil passage 405 is set near position or end cap 402, and cooling oil enters the axial stream of stator case 401 by ring shaped oil passage 405
Road 404 cools down stator yoke 101.
Above description is directed to the embodiment using inner rotor motor, and certainly, oil-cooled motor of the invention is not limited to interior turn
Sub-motor can equally use stator and rotor partition method of the invention in some embodiments using external rotor electric machine, if
Corresponding distance sleeve component and electric machine structure are counted, describes an outer rotor oil according to the present invention below with reference to Figure 10-Figure 12
The stator and rotor partition method of cool electric machine embodiment.
An outer rotor oil-cooled motor according to the present invention, partition method, distance sleeve assembly material and internal rotor electricity
The embodiment of machine is identical, and specific structure is adjusted according to the characteristics of external rotor electric machine.The oil-cooled motor include stator 1, around
Group 2, rotor 3, electric machine casing 4 and distance sleeve component 5 etc.；Stator 1 has the structures such as stator yoke 101 and stator tooth 102, stator
Tooth 102 is evenly distributed formation stator slot 103, winding 2 between the lateral direction of stator yoke 101, stator tooth 102 and is wrapped in stator
It is connected on tooth 102 and in the axial end portion of stator 1, winding 2 can be Distributed Winding or concentratred winding, stator as the case may be
The concrete shape of slot 103 can modify according to the needs of design of electrical motor index and application, and the end face of stator tooth 102 is
Arc-shaped, its center of circle is located at electrical axis, and there are the protrusion circumferentially stretched out, two adjacent stators in the end two sides of stator tooth 102
Stator rabbet 104 is formed between the end bosses of tooth；Electric machine casing 1 includes rotor case 403 and end cap 402, stator case 401
Incomplete structure, 101 both ends connection end cap 402 of stator；Distance sleeve component includes distance sleeve 501 and the support of distance sleeve end
502。
Distance sleeve 501 is located in the air gap 6 between the stator 1 and rotor 3 of oil-cooled motor, the both ends of distance sleeve 501
Distance sleeve end support 502 is connected, distance sleeve end support 502 is only butted on both ends end cap 402 respectively.
Specifically, the main structure of distance sleeve 501 be thin-wall circular canister portion 503, internal perisporium be distributed along the circumference with along every
The distance sleeve rib 504 axially extending from sleeve 501, each 504 two sides shape of distance sleeve rib and 104 shape of stator rabbet
Shape cooperation, i.e., corresponding with the end bosses shape of stator tooth 102, each distance sleeve rib 504 is inserted into stator slot 103.Isolation
There are one section of air gaps 6 between regular circle, with the rotor 3 for the periphery wall shape of sleeve 501.Thin-wall circular canister portion 503
Internal diameter is identical as the arc diameter of 102 end face of stator tooth, and the outer diameter of thin-wall circular canister portion 503 is slightly less than the gabarit diameter of rotor 3.Every
Reference shape Fig. 9 from sleeve 501.It is understood that 501 adjacent rib 504 of distance sleeve and its between thin-wall circular canister portion 503
Outer contour shape and adjacent stators notch 104 and its between 102 end-face circular shape of stator tooth match, realize stator 1
The complete package of outer end also achieves the circumferentially positioned of distance sleeve 501 and fixes, and the support for enhancing distance sleeve 501 is rigid
Degree, and still there are certain thickness even air gaps between 3 inner surface of the outer surface of distance sleeve 501 and rotor, do not affect
The normal rotational movement of rotor.Since the setting of distance sleeve rib 504 enhances the rigidity of distance sleeve 501, thin-wall circular canister portion
The available control of 503 thickness does not need to repair in order to which distance sleeve component 5 is added less than the thickness of the original air gap of motor
Change original electric machine structure, adjustment 1 internal diameter of stator or 3 outer diameter of rotor, that is, haves no need to change the air gap 6 of original motor.In addition, big
In most motors, blend stop is natively equipped at stator rabbet 104 prevents winding 2 along the radial de- from stator rabbet 104 of stator 1
Out, distance sleeve rib 103 can play the role of blend stop simultaneously prevents winding 2 from deviating from.
Distance sleeve end support 502 includes the cylindrical portion that two thickness are thicker than distance sleeve 501, one of cylindrical portion
Internal diameter it is identical as the internal diameter of distance sleeve, the outer diameter and the outer diameter phase of distance sleeve intercostal thin-walled portion of another cylindrical portion
Together, the end face of the separate stator of two cylindrical portions is only butted on electric motor end cap 402.It is understood that such structure can be with
The cylindrical space and rotor 3 that are formed between motor stator casing 401, end cap 402, distance sleeve component 5 is completely separated.
Preferably, it can be further fixed between distance sleeve 501 and stator 1 with gluing.
In the embodiment of external rotor electric machine, 501 material of distance sleeve is identical as the embodiment of inner rotor motor, is similarly
Insulation, heatproof is met the requirements and non-diamagnetic material；The cross sectional shape of distance sleeve 501 equally can be according to stator rabbet
104 shape is adjusted according to the requirement of material or processing technology；Distance sleeve 501 can be integrated processing method manufacture,
Or the mode being glued after split type processing manufactures, the scheme of parts processing and the embodiment of inner rotor motor are identical.
Using the type of cooling that the external rotor electric machine of above-mentioned stator and rotor partition method is cold using directly oil, stator 1 and winding
2 are immersed directly in cooling oil, and end cap 402 is equipped with cooling oil inlet and outlet 406, and cooling oil passes through the cooling-oil inlet 406
It is flowed out after cooling motor by cooling-oil outlet 406.On the one hand, cooling oil enters distance sleeve group by cooling-oil inlet 406
Cylindrical space defined by part 501, stator case 401 and end cap 402, cooling oil are passed through 103 space of stator slot, and from one
End flows to the other end, full of the cooling stator tooth 102 in space and winding 2 between stator tooth 102 and winding 2；On the other hand, fixed
Shaft orientation flowing channel 404 is arranged in son 1, and ring shaped oil passage 405 is arranged at end cap, and cooling oil enters the axial direction of stator 1 by ring shaped oil passage 405
Runner 404 cools down stator yoke 101.
The stator and rotor isolation of the specific embodiment of an internal rotor oil-cooled motor of the invention is described below with reference to Fig. 1-Fig. 6
The specific structure of specific method and corresponding distance sleeve component and motor.
The oil-cooled motor according to an embodiment of the present invention that can isolate motor stator, rotor place space, as shown in fig. 6,
Its oil-cooled motor includes stator 1, winding 2, rotor 3, electric machine casing 4 and distance sleeve component 5 etc.；Stator 1 has stator yoke 101
With the structures such as stator tooth 102, stator tooth 102 be evenly distributed formed between the interior direction of stator yoke 101, stator tooth 102 it is fixed
Pilot trench 103, winding 2 are wrapped on stator tooth 102 and connect in the axial end portion of stator 1, and winding 2 can be as the case may be
Distributed Winding or concentratred winding, the end face of stator tooth 102 is radius d1, the center of circle is located at the arc-shaped of electrical axis, stator 102
There are the protrusion circumferentially stretched out in end two sides, and form stator rabbet 104, notch between the end bosses of two adjacent stators teeth 102
104 width are a；Electric machine casing 4 includes stator case 401, rotor case 403 and end cap 402, and stator case 401 is cylindrical shape
Structure is coated at stator yoke 101, both ends connection end cap 402.
Distance sleeve component 5 includes distance sleeve 501 and distance sleeve end support 502.It is cold that distance sleeve 501 is located at oil
In air gap between the stator 1 and rotor 3 of motor, the both ends connection distance sleeve end support 502 of distance sleeve 501, isolation
Sleeve ends support 502 both ends to be only butted on both ends end cap 402 respectively.
Specifically, the main structure of distance sleeve 501 be thin-wall circular canister portion 503, periphery wall be distributed along the circumference with along every
The distance sleeve rib 504 axially extending from sleeve 501, each 504 two sides shape of distance sleeve rib and 104 shape of stator rabbet
Shape cooperation, the main part width of distance sleeve rib 504 is a, of same size with notch 104,504 end of distance sleeve rib extend out with
Just the fixation of its position is realized, 504 end widest part width of distance sleeve rib is b, and each distance sleeve rib 504 is inserted into stator
Slot.The internal perisporium shape of distance sleeve 501 be regular circle, diameter d2, be greater than rotor diameter d3, make itself and rotor 3 it
Between there are one section of air gaps.The outer diameter of thin-wall circular canister portion between the adjacent rib 504 of distance sleeve 501 is d1, with 102 end of stator tooth
The arc diameter in face is identical, and the outer diameter at rib 504 that has of distance sleeve 501 is d4.In the present embodiment, 102 end face of stator tooth is straight
Diameter d1=322mm, 501 internal diameter d2=321.4mm of distance sleeve, 3 outside diameter d 3=320mm of rotor, distance sleeve 501 have rib 504
Locate outside diameter d 4=326mm, 104 width a=4.02mm of stator rabbet, 504 end widest part width b=4.78mm of rib.
Distance sleeve end support 502 includes the cylindrical portion that two thickness are thicker than distance sleeve, one of cylindrical portion
Internal diameter is identical as the internal diameter d2 of distance sleeve 501, and thin-walled portion is outer between the outer diameter and distance sleeve rib 504 of another cylindrical portion
Diameter d1 is identical, and the end face of the separate stator of two cylindrical portions is only butted on electric motor end cap 402.
Specifically, 501 material of distance sleeve is carbon fiber-reinforced polyester.It is metal that distance sleeve end, which supports 502 materials,
Material.Connection between distance sleeve 501 and distance sleeve end support 502 is to be glued.
The motor type of cooling cold using directly oil, stator 1 and winding 2 are immersed directly in cooling oil, stator case 401
Certain one end is equipped with cooling oil inlet and outlet 406, and cooling oil is by passing through cooling-oil outlet 406 after the cooling motor of cooling-oil inlet 406
Outflow.On the one hand, cooling oil enters distance sleeve component 5, stator case 401 and end cap 402 by cooling-oil inlet 406 and is limited
Fixed cylindrical space, cooling oil is passed through 103 space of stator slot, and flows to the other end from one end, full of stator tooth 102 with around
The cooling stator tooth 102 in space and winding 2 between group 2；On the other hand, shaft orientation flowing channel is set in 401 internal perisporium of stator case
404,401 end cooling oil of stator case imports and exports 406 positions and ring shaped oil passage is nearby arranged, and cooling oil passes through ring shaped oil passage 405
Into the cooling stator yoke 101 of shaft orientation flowing channel 404 of stator case 401.
The present invention provides a kind of oil-cooled motor that can isolate motor stator, rotor place space, the stator and rotor
Partition method can be effectively isolated motor stator and rotor, realize that the direct oil of motor stator and winding is cold, the power for improving motor is close
Degree, torque density and reliability.
It is of the invention can isolate motor stator, rotor where the oil-cooled motor in space have the following advantages that and feature:
(1) it is realized by distance sleeve component 5 by 5 motor stator casing 401, end cap 402, distance sleeve component shapes
At cylindrical space and rotor 3 it is completely separated, allow in stator slot 103 space be passed directly into cooling oil to around
Group 2 and stator tooth 102 realize that directly oil is cold, to realize that motor stator 1 and the direct oil of winding 2 are cold, improves the power of motor
Density, torque density and reliability；
(2) distance sleeve 501 is the tubular structure that one side is equipped with distance sleeve rib 504,501 adjacent rib 504 of distance sleeve
Between and its outer contour shape of part and adjacent stators notch 104 and its between 102 end-face circular shape of stator tooth match,
The complete package for realizing 1 inner end of stator also achieves the circumferentially positioned of distance sleeve 501 and fixes, enhances distance sleeve
501 support stiffness, and there are uniform air gaps 6 between 3 outer surface of the inner surface of distance sleeve 501 and rotor, will not interfere
To the normal rotational movement of rotor 3；
(3) increase of distance sleeve component 5 will not impact motor original structure with design, due to distance sleeve rib
504 setting enhances the rigidity of distance sleeve 501, and it is original to be less than motor for the available control of the thickness of thin-wall circular canister portion 503
The thickness of air gap does not need to modify original electric machine structure, adjustment 1 internal diameter of stator or rotor 3 in order to which distance sleeve component 5 is added
Outer diameter haves no need to change the air gap 6 of original motor.For being natively equipped with the motor of blend stop at stator rabbet 104, it is isolated
Sleeve rib 504 can play the role of blend stop simultaneously prevents winding 2 from deviating from, and distance sleeve rib 504 and thin-wall circular canister portion 503 may be used also
With using the manufacture being glued after parts processing, distance sleeve rib 504 can use the original blend stop of motor.
(4) 501 material of distance sleeve be glass fibre or carbon fiber-reinforced thermosetting synthetic resin matrix composite, absolutely
Edge and be non-diamagnetism, be resistant to higher temperature, realize the normal work for not influencing motor while effective oil removal, distance sleeve
It is metal material that end, which supports 502 materials, ensure that being reliably fixed for oil removal sleeve assembly 5.
(5) oil-cooled motor that can isolate motor stator, rotor place space of the invention, to inner rotor motor and outer turn
Sub-motor has similar thinking, has stronger versatility and portability.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, the essence for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Mind and range.
Claims (6)
1. a kind of oil-cooled motor that can isolate motor stator, rotor place space, in which:
The oil-cooled motor includes stator, winding, rotor, electric machine casing and distance sleeve component etc.；The stator has stator
Yoke and stator tooth, stator tooth are evenly distributed in stator yoke, and stator between cog forms stator slot, and two adjacent stators between cog have
Stator rabbet；The oil cold motor casing includes stator case, rotor case or rotor of output shaft axle, end cap, the stator case
It is connect with the stator yoke；
The distance sleeve component includes distance sleeve and the support of distance sleeve end；
It is characterized in that, the distance sleeve is located in the air gap between the stator and the rotor of the oil-cooled motor,
The both ends of the distance sleeve connect the distance sleeve end support, and distance sleeve end support both ends are only butted on respectively
The end cap.
2. the oil-cooled motor according to claim 1 that can isolate motor stator, rotor place space, which is characterized in that
The oil-cooled motor is inner rotor motor or external rotor electric machine.
3. the oil-cooled motor according to claim 1 to 2 that can isolate motor stator, rotor place space, feature exist
In the distance sleeve is distributed along the circumference with the separation sleeve axially extending along the distance sleeve towards the stator on one side
Cylinder rib, each distance sleeve rib two sides shape and the stator rabbet shape cooperate, each distance sleeve rib
The insertion stator slot；The one side far from the stator of the distance sleeve is between regular circle, with the rotor
There are one section of air gaps.
4. the oil-cooled motor according to any one of claim 1-3 that can isolate motor stator, rotor place space,
It is characterized in that, the distance sleeve material is glass fibre or fibre reinforced synthetic resin matrix composite, resin base
Body is thermosetting resin.
5. the oil-cooled motor in space where can isolate motor stator, rotor described in any one of -4 according to claim 1,
It is characterized in that, distance sleeve end backing material is metal material.
6. the oil-cooled motor according to any one of claims 1-5 that can isolate motor stator, rotor place space,
It is characterized in that, the oil-cooled motor type of cooling cold using directly oil, the stator and the winding are immersed directly in cooling
In oil, the end cap of described stator case one end or the oil-cooled motor is imported and exported equipped with cooling oil, and cooling oil passes through described
Pass through cooling-oil outlet outflow after the cooling oil-cooled motor of cooling-oil inlet, on the one hand, cooling oil by the cooling oil into
Mouth is passed through the stator into space defined by the distance sleeve component, the stator case and the end cap, cooling oil
Slot space, full of the cooling stator tooth in space and winding between the stator tooth and the winding；On the other hand, in stator case
Shaft orientation flowing channel is set close to stator yoke side, cooling oil passes through described in the ring shaped oil passage entrance set in the stator case or end cap
Shaft orientation flowing channel cools down stator yoke.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811273915.4A CN109194037B (en) | 2018-10-30 | 2018-10-30 | Oil-cooled motor for isolating space where motor stator and rotor are located |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811273915.4A CN109194037B (en) | 2018-10-30 | 2018-10-30 | Oil-cooled motor for isolating space where motor stator and rotor are located |
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| CN109194037A true CN109194037A (en) | 2019-01-11 |
| CN109194037B CN109194037B (en) | 2021-06-01 |
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| CN109617319A (en) * | 2019-02-01 | 2019-04-12 | 清华大学 | Oily air-cooled structure in a kind of flat wire motor slot |
| CN111271292A (en) * | 2020-02-17 | 2020-06-12 | 上海交通大学 | Two-phase resistance-reducing shielding motor main pump |
| CN111969767A (en) * | 2020-07-13 | 2020-11-20 | 华中科技大学 | Motor cooling system and motor |
| CN113328538A (en) * | 2021-05-14 | 2021-08-31 | 珠海格力电器股份有限公司 | Stator module and magnetic suspension motor |
| CN114244022A (en) * | 2021-12-13 | 2022-03-25 | 陕西航空电气有限责任公司 | Motor with stator winding isolated from conductive cooling liquid |
| CN114337112A (en) * | 2021-11-29 | 2022-04-12 | 中车永济电机有限公司 | Independent sealed cooling structure in evaporation cooling stator both ends |
| WO2022242496A1 (en) * | 2021-05-21 | 2022-11-24 | 华为数字能源技术有限公司 | Stator, electric motor and electric vehicle |
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| CN114244022A (en) * | 2021-12-13 | 2022-03-25 | 陕西航空电气有限责任公司 | Motor with stator winding isolated from conductive cooling liquid |
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| CN109194037B (en) | 2021-06-01 |
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