CN208539670U - Winding water cooling microlight-type axial-flux electric machine - Google Patents

Abstract

The utility model discloses a kind of winding water cooling microlight-type axial-flux electric machine comprising discoid stator and rotor, the stator are located at middle position, and the rotor is two, is respectively provided at the two sides of the stator；Wherein, cooling water pipe is surrounded between stator core inner edge and adjacent stator core, the cooling water pipe include with the quantity such as stator core, be located between stator core in Π shape first part and be located at second, third part that the first part adjacent with two sides of stator core inner edge be connected to, it is cooling water pipe that the both ends of the adjacent Π shape first part of the cooling water pipe pass through the connection of second, third part compartment of terrain respectively.The utility model solves the problems, such as that stator is cooling, and the radial space for simultaneously effective reducing motor occupies size.

Description

Winding water cooling microlight-type axial-flux electric machine

Technical field

The utility model relates to a kind of axial-flux electric machines, belong to technical field of motors.

Background technique

Permanent magnet high-speed motor, which can be applied, directly drives the occasions such as electricity generation system in such as aerator, compressor, gas turbine, uses To replace the common combination for adding gear-box using low speed asynchronous machine before.There is power density height, it is small in size, it is light-weight, It is high-efficient, the characteristics of high reliablity.Exclusive advantage is all embodied in performance in all respects.

The cooling of axial-flux electric machine generally has using air-cooled and water cooling, and end cap water is usually used in its water-cooling system Cold and casing water cooling, such as permanent magnetism water cooling disc type electric machine disclosed in 201210142931.6, including water tank end cap, stator, casing, Rotor, bearing, main shaft, fastening bolt.First the heater stator of magneto is fastened on water tank end cap, main shaft and permanent magnetism turn Son is fixedly connected, and the both ends of main shaft are separately mounted on water tank end cap and drive end bearing bracket by bearing, is equipped with and is dissipated on water tank end cap The water tank of backing and water inlet pipe, outlet pipe and water tank end cap leads to, and water tank and the circulating cooling water source of water tank end cap interlink；From And realize cooling.

The application for a patent for invention of 201810024665 .4 of Patent No. discloses a kind of disc type electric machine, the disc type electric machine Including the internal casing and stator module with installation cavity.Mainly the first cooling duct is arranged in cover internal in it, simultaneously Be equipped with the second cooling duct inside main casing, the second cooling duct by be set to the intracorporal axial interface channel of the main casing with The first cooling duct connection.To realize end cap and shell while cooling.However, either end cap is cooling or shell is cold But, all directly stator winding cannot directly cool down well, therefore its cooling effect is not achieved most preferably.

The application for a patent for invention text of Publication No. CN107591944 A discloses a kind of disc type electric machine radiator structure and disk Formula motor, the disc type electric machine radiator structure include end cap, stator module, the first heat-conducting glue layer and cooling structure, are mainly Inwardly protruded cooling duct is set in two end cap inner surfaces, and sets heat-conducting glue between stator module and the inner wall of end cap Filling, conducting the heat of the stator module to the cooling duct on end cap inner wall.Although which raises dissipating for stator Thermal effect, but since the setting for increasing cooling duct and heat-conducting glue filling on end cap can all increase axial length, Axial space occupies greatly, can not directly cool down to stator.

Moreover, in order to improve power of motor density and torque density, it is important to how to improve the cooling effect of stator winding.

CN203537176U utility model patent discloses a kind of compact high performance disc type electric machine water-cooling system, including electricity Machine stator, the motor stator include the stator core of circular ring shape, the stator core surface is radially even be distributed with it is several Groove, is the stator core teeth portion of protrusion between two neighboring groove, each stator core teeth portion be mounted on stator around Coil is organized, S type cooling water pipe, the S type cooling water pipe and the stator winding line are provided in the groove of the stator core Circle fitting.Disc type electric machine water-cooling system disclosed in the utility model patent is directly cooled down to stator winding, cooling effect Fruit obviously has relative to aforementioned patent good cooling results, still, due to its cooling water pipe around stator core it is S-type surround, water pipe In can generate circulation, and then increase loss.In addition, since cooling water pipe is S-shaped circular in stator core, i.e., it is inside and outside in iron core There is cooling water pipe, undoubtedly will increase motor radial space size.

Another problem existing for axial-flux electric machine is that stator core is usually used silicon steel sheet and is made, main It is to be easy fever, so that its loss height, low efficiency.Meanwhile the rotor magnet of axial-flux electric machine is generally using common main The arrangement of magnetic pole, which magnetic pole is uniformly distributed, therefore effectively flux density and invalid flux density is uniformly distributed, and rotor yoke thickness is thicker, from And it is larger that axial space is occupied.

Therefore, one kind can reduce stator core fever, and can directly cool down to stator core, and be avoided that water Pipe generate circulation and reduce motor is axial, radially take up space and the axial magnetic flux that electric efficiency reduces loss can be improved Motor becomes the target that those skilled in the art pursue.Meanwhile how to improve the poly- magnetic effect of magnetic pole, so that effective air gap flux density increases Add, invalid magnetic field tails off, so that rotor yoke thickness be made to reduce, reduces motor and axially takes up space size, become this field skill The target that art personnel pursue.

Summary of the invention

It is high that utility model aims to solve existing axial-flux electric machine stator temperatures, stator S-shaped cooling water pipe To stator winding into it is cooling when lead to the problem of circulation and its radial space occupy it is big.

The another object of the utility model is to solve its stator itself in the prior art and generates heat big, loss greatly, low efficiency The problem of, and then reach directly reduction iron core calorific value itself, improve efficiency.

A further object of the utility model is to solve the arrangement of its rotor magnetic steel in the prior art, for axial magnetic flux For motor, rotor rim thickness is big, excessive so as to cause axial-flux electric machine thickness, increases axial the problem of taking up space.

To achieve the above object, the utility model provides: a kind of winding water cooling microlight-type axial-flux electric machine comprising set Stator in middle position, the stator include core end plate, be located at the stator core being circumferentially evenly arranged on core end plate and Winding of the coiling outside it, and constitute the magnet of multiple magnetic poles and be configured in the rotor rim of plate-like and turn on stator opposing end surface Son；The stator is located at middle position, and the rotor is two, is respectively provided at the two sides of the stator；It is characterized in that, institute State stator core inner edge and stator slot (between adjacent stator core) be surrounded with cooling water pipe, the cooling water pipe include with The quantity such as stator core, be located between stator core in Π shape first part and be located at stator core inner edge with two sides phase Second, third part of adjacent first part's connection, the both ends of the adjacent Π shape first part of the cooling water pipe lead to respectively Crossing the connection of second, third part compartment of terrain is cooling water pipe.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, the cooling water Pipe is made of 1-4 root, and each includes a water inlet and a water outlet.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, the cooling water The first part of pipe is in Π shape tabular, second and third part is in arc plate.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, the stator core It is formed using non-crystalline material coiling.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, the stator core It further include that intermediate mandrel and both ends end plate, the flaky non-crystalline material made of soft magnetic materials is wound around the centre On mandrel.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, the intermediate mandrel Section it is trapezoidal, and it is with the radial dimension of 1/10-1/5 of entire iron core.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, the magnetic of the rotor Pole is made of the magnet that magnetizes of the main magnet of axial magnetized and circumferential magnetization.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, circumferential magnetization fills The polarity of magnetic magnet are as follows: the pole the N main magnet side close to stator side is the pole N, and the pole the S main magnet side close to stator side is the pole S. Wherein, main magnet and the magnet that magnetizes are made of rare-earth permanent magnet.

Winding water cooling microlight-type axial-flux electric machine described in the utility model, it is preferred that, the rotor turns The back side of sub- magnetic yoke is provided with several flabellums of radial arrangement.For further decreasing the temperature of motor, cooling effect is improved.

Due to the adoption of the above technical scheme, between adjacent iron cores and iron core inner edge is equipped with cooling water to the utility model Pipe, by cleverly designing, cooling water pipe only between adjacent stator and stator inner edge setting, without being wound around stator Outside, therefore, it is not only due to that the cooling of stator directly may be implemented close to stator, while the radial space that can reduce stator accounts for According to amount, therefore the radial dimension of motor can be reduced.Simultaneously as the cooling water pipe between adjacent stator tooth is set in Π shape It sets, i.e., is made of the Π pipe inwardly to flow back again outward, therefore overcome in the cooling water pipe of adjacent between cog in reverse reflux The problem of circulation can be generated around stator core S-type circular cooling water pipe in the prior art, and then increase loss.

Cooling water pipe may further be made into more by the utility model, and used in parallel, thus increased water flow amount, increase is cold But effect.

The utility model further uses non-crystalline material that iron core is made, it is possible thereby to iron core fever is reduced, especially by Lesser soft magnetic materials is made into mandrel, so as to which the non-crystalline material coiling of sheet is formed the iron being made of substantially non-crystalline material Core.

The utility model is further, by rotor magnet using the main magnet of axial magnetized and the magnet structure that magnetizes of circumferential magnetization At it is possible thereby to effectively increase the magnet accumulating cap of magnetic pole, so that effective air gap flux density increases, magnetic field sine improves, simultaneously Invalid magnetic field becomes smaller, and required rotor rim is thinning, and then reduces the axial space of the utility model axial-flux electric machine Occupy.

Thus, it can be seen that the utility model has the advantages that

1, heat dissipation effect is outstanding, no leakage hidden trouble；

2, cooling device is compact-sized, light and handy and be not take up the motor useful space；

3, rotor is due to increasing the magnet that magnetizes, so that rotor loss reduces；

4, big low speed torque, light-weight, power density is high.

Detailed description of the invention

Fig. 1 is the cross-sectional view of winding water cooling microlight-type axial-flux electric machine described in the utility model；

Fig. 2 is the A-A cross-sectional view of Fig. 1；

Fig. 3 is the side view of Fig. 1；

Fig. 4 is the stereo decomposing of winding water cooling microlight-type axial-flux electric machine described in the utility model removed after shell Figure；

Fig. 5 A is the schematic perspective view of iron core；

Fig. 5 B is the longitudinal section view of iron core；

Fig. 5 C is the sectional elevation of iron core；

Fig. 6 is the stator cooling device structural schematic diagram of the utility model；

Fig. 7 A is the stator cooling water pipe structural schematic diagram of the utility model；

Fig. 7 B is the section B-B cross-sectional view of Fig. 7 A；

Fig. 8 is the utility model rotor magnetic pole layout drawing；

Fig. 9 is the utility model rotor main magnet, magnetize magnet circumferential direction local expansion figure.

Wherein: stator 1；Rotor 2；Casing 3；End cap 4；End cap 5；Iron core 11；Stator winding 12；

Insulating layer 13；Cooling water pipe 6；First part 61；Second part 62；Part III 63；Entrance 611；

Outlet 612；Water inlet 64；Water outlet 65；Iron core mandrel 111；Intermediate mandrel 1111；End plate 1112；

Iron core main part 112；Rotor rim 21；Main pole 22；Magnetize magnet 23；Magnetize magnet 231 clockwise；

Magnetize magnet 232 counterclockwise；Flabellum 24.

Specific embodiment

Embodiment 1 is winding water cooling microlight-type axial-flux electric machine described in the utility model, is disc type referring to Fig. 1-4 Motor, including the stator 1 for being located at centre and the rotor 2 for being symmetrically arranged at stator both ends, the casing 3 being located at outside rotor 2 and stator 1 And it is located at the end cap 4,5 at both ends；Stator 1 includes that iron core 11, the iron core being circumferentially evenly arranged are externally provided with stator winding 12, Stator winding is externally provided with insulating layer 13；It further includes a cooling device, which is to be surrounded on the stator iron with winding Cooling water pipe 6 between 11 inner edge of core and stator core 11, referring to Fig. 7 A, 7B, cooling water pipe 6 includes and the numbers such as stator core The first part 61 that measure, is located between stator core and the first part connection adjacent with two sides for being located at stator core inner edge The both ends of second, third part 62,63, the adjacent Π shape first part 61 of cooling water pipe 6 pass through second, third part respectively 62, the connection of 63 compartment of terrain is cooling water pipe.

Specifically, first part 61 is in Π shape tubulose in terms of the section of Fig. 7 B comprising two openings, an entrance 611, one outlet 612, plate-like, in this way convenient for saving circumferential space, preferably gap is got between water inlet pipe and outlet pipe It is small better, it can also are as follows: separate to form two openings by a partition among the cavity of a plate.Referring to Fig. 7 A comprising One total water inlet 64 and a total water outlet 65, cooling water pass into Part III 63 into first from water inlet 64 The entrance 611 of part 61 is connected to the first part of adjacent stators between cog from the outlet of first part 612 by second part 62 61 entrance 611, then be connected to the entrance 611 of adjacent first part 61 by Part III 63, i.e. first part 61 enter Mouth 611, outlet 612 are that interval exchanges, and the entrance 611 of first first part 61 exports 612 on the outside in inboard, second Then on the outside, outlet 612 is in inboard, and successively compartment of terrain passes through second part 62, Part III for the entrance 611 of a first part 61 63 are connected to, so until water outlet 65 flows out.Second, third part 61,63 is the inside for being located at stator core 11, in sky Heart arc plate, thus, it is possible to which only motor can be saved without being arranged on the outside in the inside of iron core 11 setting cooling water pipe 6 Radial space.In the present embodiment, cooling water pipe 6 is one comprising a total water inlet 64 and a total water outlet 65, or more root canals, such as 2-4 root canal are used in parallel.Such benefit is that water flow is multiplied, and cooling effect is more It is good.

The cooling water pipe of the utility model is made preferably with aluminium, and stator-winding copper is externally provided with insulating layer, makes inside it Substantially it is flowed through without electric current, to realize that motor strength is cooling and does not have leakage hidden trouble, and the radial dimension of motor can be reduced.

Referring to Fig. 5 A, 5B, 5C, in order to reduce the fever of motor stator, the stator core 11 of the utility model uses amorphous Material is made, and the non-crystalline material of the iron core 11 is flaky material, and 111 coiling of iron core mandrel of center is located at by it At iron core mandrel 111 has intermediate mandrel 1111 made of soft magnetic materials and positioned at mandrel two in inverted trapezoidal including a section The end plate 1112 at end is made in intermediate mandrel 111 of soft magnetic materials, preferably in the consistent inverted trapezoidal of core configuration, thus may be used To be wound with the iron core main part 112 that the non-crystalline material of sheet is constituted on it, thus the iron core that Formation cross-section is trapezoidal.It should Core loss can be greatly reduced in iron core made of specially designed non-crystalline material, to reduce iron core fever, reduce loss, mention High electric efficiency.

Show rotor magnetic steel end face arrangement schematic diagram referring to Fig. 8, Fig. 9, Fig. 8, Fig. 9 is that magnet steel is circumferentially unfolded Figure；Winding water cooling microlight-type axial-flux electric machine described in the utility model, the disc-shaped rotor including being located at 1 two sides of stator 2, rotor 2 include rotor rim 21 and and be located at rotor rim 21 and the adjoining one side of stator with stator winding corresponding position In main pole 22 circumferentially, and in the magnet 23 that magnetizes of circumferential magnetization, which includes: to magnetize clockwise Magnet 231 and the magnet 232 that magnetizes counterclockwise；In the direction of the clock: in the pole the N main magnet and the pole S main magnet close to stator side Between be the magnet 232 that magnetizes counterclockwise, be the magnet 231 that magnetizes clockwise between the pole S main magnet and the pole N main magnet；Magnetize magnetic 23 polarity of iron are as follows: the pole the N main magnet side close to stator side is the pole N, and the pole the S main magnet side close to stator side is the pole S.Its In, main magnet 22 and the magnet that magnetizes are rare-earth permanent magnet.It is viewed in circumferential, the magnet pole widths phase of the pole N main magnet and the pole S main magnet Together, magnetize the magnet 232 and magnet 231 that magnetizes is of same size clockwise counterclockwise.According to magnetic pole thickness, air gap, the difference of pole span, The optimal proportion of 22 magnetic pole of main magnet and 23 width of magnet that magnetizes is different.23 proportion of magnet that magnetizes increases, although directly producing Raw air gap direction magnetic field reduces, but the magnet accumulating cap of the magnetic pole to be magnetized by two sides circumferencial direction, can make up air gap magnetic The reduction of field.Two kinds of effect comprehensive functions determine the proportion of final various magnetic poles.Referring to Fig. 9 as can be seen that in the magnetic that magnetizes Under the action of iron, increase close to the pole N of the main magnet 22 of stator side and effective flux density of the pole S, so that magnetic field sine improves；Separately Motor thickness is thinned so as to reduce the thickness of rotor rim in the invalid field weakening of the main magnet 22 of side, smaller Ingeniously.

Referring to fig. 4, it in order to further increase the cooling effect of motor, is provided at the back side of rotor rim 21 radial The flabellum 24 of arrangement, height are determined according to the size in space.

The winding water cooling microlight-type axial-flux electric machine of the utility model, because field structure does not have stator yoke, and only There is rotor yoke, so being thinned for rotor yoke may be implemented using magnetic pole and the main magnet combination of magnetizing, it can be effectively low Reduce the volume of integrated motor.

It is possible thereby to see, the magnetic pole of the utility model rotor can increase poly- magnetic effect using main magnet and the magnet that magnetizes, Become strong in stator side magnetic field, the effective air gap flux density for being increases, and the sine in magnetic field improves.Meanwhile the one of rotor rim The magnetic field of side tails off, and thus needs rotor yoke thinning, and then the axial space that can reduce motor occupies, and reduces the ruler of motor It is very little.

Above embodiments are only demonstration explanation to be carried out to the utility model, rather than limit the protection scope of the application, this Field technical staff can carry out conventional modifications or substitutions on the basis of the above embodiments, such as: change cooling water pipe Quantity is changed main magnet and is magnetized magnet but the application still should belong in these modifications or substitutions using more water pipe parallel connection Protection scope.

Claims (10)

1. a kind of winding water cooling microlight-type axial-flux electric machine comprising be located at the stator in middle position, which includes iron core End plate is located at the winding of the stator core being circumferentially evenly arranged on core end plate and coiling outside it, and constitutes multiple magnetic poles The rotor rim and the rotor on stator opposing end surface that magnet is configured in plate-like；The rotor is two, it is described to be respectively provided at The two sides of stator；It is characterized in that, being surrounded with cooling water pipe, the cooling between the stator core inner edge and stator slot Water pipe include with the quantity such as stator core, be located between stator core in Π shape first part and be located at stator core inner edge Adjacent with two sides first part's connection second, third part, the adjacent Π shape first part of the cooling water pipe It is cooling water pipe that both ends pass through the connection of second, third part compartment of terrain respectively.

2. the winding water cooling microlight-type axial-flux electric machine according to claim 1, which is characterized in that the cooling water Pipe is made of 1-4 root, and each includes a water inlet and a water outlet.

3. the winding water cooling microlight-type axial-flux electric machine according to claim 1, which is characterized in that the cooling water The first part of pipe is in Π shape tabular, second and third part is in arc plate.

4. winding water cooling microlight-type axial-flux electric machine described in -3 any items according to claim 1, which is characterized in that institute Stator core is stated to form using non-crystalline material coiling.

5. winding water cooling microlight-type axial-flux electric machine according to claim 4, which is characterized in that the stator core is also The intermediate core is wound around including intermediate mandrel and both ends end plate, the flaky non-crystalline material made of soft magnetic materials On axis.

6. winding water cooling microlight-type axial-flux electric machine according to claim 5, which is characterized in that the intermediate mandrel Section is trapezoidal, and its 1/10-1/5 with entire iron core radial direction area.

7. winding water cooling microlight-type axial-flux electric machine described in -3 any items according to claim 1, which is characterized in that institute The magnetic pole for stating rotor is made of the magnet that magnetizes of the main magnet of axial magnetized and circumferential magnetization.

8. winding water cooling microlight-type axial-flux electric machine according to claim 7, which is characterized in that circumferential magnetization magnetizes The polarity of magnet are as follows: the pole the N main magnet side close to stator side is the pole N, and the pole the S main magnet side close to stator side is the pole S.

9. winding water cooling microlight-type axial-flux electric machine according to claim 8, which is characterized in that the main magnet width It is identical；The magnet width that magnetizes is identical.

10. winding water cooling microlight-type axial-flux electric machine described in -3 any items according to claim 1, which is characterized in that The back side of the rotor rim of the rotor is provided with several flabellums of radial arrangement.