CN208241551U - motor and automobile - Google Patents

Abstract

The utility model relates to a kind of motor and automobile, the motor includes shell, rotor, the first stator module and the second stator module；The rotor is arranged in the hollow part of the shell, and first stator module and second stator module are respectively arranged on the two relative side of the shell；The rotor includes the rotor core equipped with shaft hole and magnetic slot, and the magnetic slot is arranged along the circumferencial direction uniform intervals of the rotor core, and the quantity of the magnetic slot is even number；The shape of the magnetic slot is irregular fan annular, and two arcs and the shaft hole of the irregular fan annular are concentric, and the intersection point of the extended line of two straight flanges of the irregular fan annular is not overlapped with the axle center of the shaft hole.The motor of the utility model arrangement mode parallel using bimorph transducer and single rotor, constitutes double air gaps structure, improves heat dissipation performance, and significantly weaken cogging torque, reduces velocity perturbation, vibration and noise when low speed operation, keeps motor operation more steady.

Description

Motor and automobile

Technical field

The utility model relates to technical field of motors, and in particular, to a kind of motor and automobile.

Background technique

With the rise of new energy, electric car high speed development under the vigorously supporting of national and local governments, and drive Motor is always the crucial priority and difficulty of electric car, and the requirement to torque, efficiency, size, weight etc. is all very harsh.Existing city The most path length ratio D/L of the wheel motor of mainstream is small on field, and internal rotor has larger space not make full use of, poor radiation, and Cogging torque is excessive, to cause motor operation unstable.

Utility model content

Based on this, it is necessary to which small for the path length ratio D/L of conventional motors, internal rotor has larger space without sufficiently benefit With, poor radiation, and cogging torque is excessive, to cause the unstable problem of motor operation, provides a kind of motor and automobile.

A kind of motor, including shell, rotor, the first stator module and the second stator module；The shell is hollow cylinder Shape, the rotor are arranged in the hollow part of the shell, and first stator module and second stator module are set respectively In the two relative side of the shell, and the rotor, the first stator module and the second stator module are coaxially disposed；It is described Rotor includes the rotor core equipped with shaft hole and magnetic slot, the shaft in the shaft hole, and is set to the magnet steel Permanent magnet in slot；The shaft hole is set to the center of the rotor core, circumference of the magnetic slot along the rotor core The setting of direction uniform intervals, the quantity of the magnetic slot are even number；The shape of the magnetic slot is irregular fan annular, institute Two arcs and the shaft hole for stating irregular fan annular are concentric, the extended line of two straight flanges of the irregular fan annular Intersection point be located on the rotor core, and the intersection point is not overlapped with the axle center of the shaft hole.

The motor of the technical program arrangement mode parallel using bimorph transducer and single rotor, constitutes double air gaps structure, improves Heat dissipation performance, and it is compact-sized, path length ratio D/L is big, reduce axially mounted size of the motor inside drive axle, make vehicle cloth It sets more flexible.In addition, due to the intersection point and the shaft hole of the extended line of two straight flanges of rotor core of the technical program Axle center is not overlapped, that is, constitutes eccentric structure, deviates magnetic slot along the circumferential direction at an angle, this design can significantly be cut Weak cogging torque reduces velocity perturbation, vibration and noise when low speed operation, keeps motor operation more steady.

Further, the air gap between first stator module and the rotor, with second stator module and institute The air gap stated between rotor is identical.

Further, first stator module includes the first cover set gradually, first end cover and the first stator, institute It states the first stator to connect by bearing with the shaft, is equipped with the first water towards first cover side in the first end cover Cold component；And/or second stator module includes the second cover set gradually, second end cover and the second stator, described Two stators are connect by bearing with the shaft, are equipped with the second water cooling group towards second cover side in the second end cover Part.

Further, heat-conducting layer is equipped with towards first stator side in the first end cover；And/or the second end It covers and is equipped with heat-conducting layer towards second stator side.

Further, the first water cooling component includes the first Cyclotron water channel set on the first end cover side wall, with And the first water inlet outside first end cover and the first water outlet are connected to and extended to the first Cyclotron water channel both ends respectively Mouthful；And/or the second water cooling component includes the second Cyclotron water channel set on the second end cover side wall, and respectively with institute It states the connection of the second Cyclotron water channel both ends and extends to the second water inlet outside second end cover and the second water outlet.

Further, the first Cyclotron water channel is in bayonet-like recess shape, and the groove of the first Cyclotron water channel is opened Mouth side is towards first cover side；And/or the second Cyclotron water channel is in bayonet-like recess shape, second convolution The slot opening side of shape water channel is towards second cover side.

Further, sealing ring is equipped between the first end cover and first cover；And/or the second end cover with Sealing ring is equipped between second cover.

Further, the rotor further includes the first tabletting and second for being respectively arranged on the rotor core two relative side Be equipped with through slot in tabletting, first tabletting and second tabletting, the position of the through slot and quantity respectively with the magnetic The position of steel tank and quantity Matching, the shape of the through slot is consistent with the shape of the magnetic slot, and the size of the through slot is small In the size of the magnetic slot.

Further, the rotor core, the first tabletting and the second tabletting are non-magnetic structure.

The technical program also provides a kind of automobile, and the automobile includes the motor as described in above-mentioned any embodiment.This skill The motor of art scheme is set to wheel side, and is connect by transmission device with wheel.

Detailed description of the invention

Fig. 1 is the perspective view of the explosion of the motor of embodiment described in the utility model；

Fig. 2 is the assembling schematic diagram of the motor of embodiment described in the utility model；

Fig. 3 is the structural schematic diagram of the rotor core of the motor of embodiment described in the utility model；

Fig. 4 is the sectional view of the rotor of the motor of embodiment described in the utility model；

Fig. 5 is the structural schematic diagram of the first end cover of the motor of embodiment described in the utility model；

Fig. 6 is the structural schematic diagram of the second end cover of the motor of embodiment described in the utility model.

10, shell；20, rotor；21, rotor core；211, shaft hole；212, magnetic slot；213, keyway；214, first is logical Wind structure；215, the second aeration structure；216, pin hole；22, shaft；221, parallel key；231, the first pressing plate；232, the second pressure Plate；24, jam nut；251, the first tabletting；252, the second tabletting；26, pin；30, the first stator module；31, the first cover； 32, first end cover；321, seal groove；33, the first stator；34, the first water cooling component；341, the first Cyclotron water channel；342, One water inlet；343, the first water outlet；344, the first water inlet pipe；345, the first outlet pipe；40, the second stator module；41, second Cover；42, second end cover；43, the second stator；44, the second water cooling component；441, the second Cyclotron water channel；442, the second water inlet Mouthful；443, the second water outlet；444, the second water inlet pipe；445, the second outlet pipe；50, bearing；60, rotary transformer；70, transformation Device shell.

Specific embodiment

It is below in conjunction with attached drawing and specifically real for the purpose of this utility model, technical solution and advantage is more clearly understood Mode is applied, the utility model is described in further detail.It should be understood that the specific embodiments described herein Only to explain the utility model, the protection scope of the utility model is not limited.

A kind of motor as shown in Figure 1 to Figure 3, including shell 10, rotor 20, the first stator module 30 and the second stator pack Part 40；The shell 10 is hollow cylinder shape, and the rotor 20 is arranged in the hollow part of the shell 10, first stator Component 30 and second stator module 40 are respectively arranged on the two relative side of the shell 10, the rotor 20, the first stator Component 30 and the second stator module 40 are coaxially disposed, and rotor 20 and the first stator module 30 and the second stator module 40 it Between there is air gap；The rotor 20 includes the rotor core 21 equipped with shaft hole 211 and magnetic slot 212, is set to the shaft Shaft 22 in hole 211, and the permanent magnet in the magnetic slot 212；The shaft hole 211 is set to the rotor core 21 center, the magnetic slot 212 is arranged along the circumferencial direction uniform intervals of the rotor core 21, in order to form uniform magnetic , the quantity of the magnetic slot 212 is even number, is formed to pole structure；Present embodiment is provided with eight magnetic slots 212, shape Cheng Si is to pole structure, can also be able to be two pairs according to different use occasions using number of pole-pairs not pair in other embodiments Pole, three pairs extremely etc..The shape of the magnetic slot 212 is irregular fan annular, two arcs of the irregular fan annular and With one heart, the intersection point A of the extended line of two straight flanges of the irregular fan annular is located at the rotor core to the shaft hole 211 On 21, and the intersection point A is not overlapped with the axle center B of the shaft hole 211.Further, two straight flanges in present embodiment The angle α range that extended line is in is 30 ° -50 °.The motor of the present embodiment arrangement side parallel using bimorph transducer and single rotor Formula constitutes double air gaps structure, improves heat dissipation performance, and it is compact-sized, path length ratio D/L is big, reduce motor inside drive axle Axially mounted size, keep arrangement more flexible.In addition, rotor core 21 two straight flanges due to present embodiment prolong The intersection point A of long line is not overlapped with the axle center B of the shaft hole 211, that is, constitutes eccentric structure, makes the circumferentially side of magnetic slot 212 To deviating at an angle, this design can significantly weaken cogging torque, reduce velocity perturbation when low speed is run, vibrate and make an uproar Sound keeps motor operation more steady.Also, the rotor core 21 of present embodiment uses non-magnetic High molecular weight polyethylene material Material is made, and the material weight is light, intensity is big, can effectively reduce the total weight of motor, further reduces motor overall volume, mentions High power of motor density, makes motor play bigger torque and power, and motor performance is significantly improved.

The side wall that the shaft hole 211 is used to form on the rotor core 21 is equipped with keyway 213, meanwhile, described turn Corresponding position is equipped with the parallel key 221 cooperated with the keyway 213 on axis 22, i.e., the described rotor core 21 is with the shaft 22 Key connection.

As shown in figure 4, further including turning for positioning in order to further ensure the bonding strength of rotor core 21 and shaft 22 The first pressing plate 231 and the second pressing plate 232 of sub- iron core 21 and shaft 22.The shaft 22 is equipped with for positioning the second pressing plate The positioning step of 232 positions, second pressing plate 232 are tightly attached to 21 side of rotor core, and the rotor by positioning step The shaft hole 211 of iron core 21 is surrounded by pin hole 216, and second pressing plate 232 is equipped with to be cooperated with the pin hole 216 Through-hole, so that the rotor core 21 is fastenedly connected with second pressing plate 232 by pin 26；First pressing plate 231 is tight It is affixed on 21 other side of rotor core, i.e., described first pressing plate 231 is respectively arranged on the rotor iron with second pressing plate 232 21 two relative side of core；First pressing plate 231 is close to by jam nut 24 with the rotor core 21.Specifically, described The internal diameter of jam nut 24 is matched with the outer diameter of 22 corresponding site of shaft, and the two being threaded by mating surface, from And jam nut 24 is made to push down the first pressing plate 231, lock rotor core 21.First pressing plate 231 and the second pressing plate 232 are common Cooperation, further improves the bonding strength of rotor core 21 Yu shaft 22.In addition, the first pressing plate 231 of present embodiment, Two pressing plates 232 and jam nut 24 are all made of aluminum alloy materials and are made, and reduce 20 overall weight of rotor.

As shown in figure 3, being also provided with the circumferencial direction uniform intervals along the rotor core 21 on the rotor core 21 The first aeration structure 214 being arranged, first aeration structure 214 are set between the two neighboring magnetic slot 212, and described The quantity of first aeration structure 214 is identical as the quantity of the magnetic slot 214.In addition, along described turn on the rotor core 21 The circumferencial direction of axis hole 21 offers the second aeration structure 215 of circle uniform intervals setting；Second aeration structure 215 Between the magnetic slot 212 and the shaft hole 211.First aeration structure 214 and the second ventilation described in present embodiment Structure 215 is ventilation hole, and first aeration structure 214 includes two fan annular vents, the fan annular vent Take full advantage of remaining space on rotor core 21.Two groups of aeration structures make full use of the space of 21 ontology of rotor core, make The weight of rotor core 21 reduces, and reduces the rotary inertia of rotor 20, ensure that the intensity of rotor 20, while also improving motor Heat dissipation performance.

As shown in figure 4, making permanent magnet when rotor 20 rotates to reinforce the cooperation intensity of permanent magnet Yu magnetic slot 212 It is not easy to drop out, the rotor 20 of present embodiment further includes the first tabletting 251 and the second tabletting for pushing down the permanent magnet 252, first tabletting 251 and the second tabletting 252 are respectively arranged on the two relative side of rotor core 21, press by described first Piece 251 and the second tabletting 252 position the permanent magnet, drop out it from the magnetic slot 212.Specifically, described first The thickness of tabletting 251 and second tabletting 252 is 0.5mm, and is equipped in the first tabletting 251 and the second tabletting 252 logical Slot, the position of the through slot and quantity respectively with the position of the magnetic slot 212 and quantity Matching, and the shape of the through slot It is consistent with the shape of the magnetic slot 212, and the size of the through slot is less than the size of the magnetic slot 212, i.e., the described through slot For size after 212 scaled down of magnetic slot, specifically, the ruler of the size of the through slot of present embodiment in magnetic slot 212 Scaled down 1/6 on the basis of very little；Since the size of the through slot is less than the size of the magnetic slot 212, thus through slot The edge of protrusion is contacted with permanent magnet, and is welded the marginal portion of permanent magnet and through slot protrusion by the way of laser welding It connects, to block permanent magnet, falls it from magnetic slot 212.In order to reduce motor volume, the permanent magnet is the high trade mark Sintering NdFeB material, permanent magnet is placed in magnetic slot 212, is built-in, the first tabletting 251 and the second tabletting 252 21 two relative side of rotor core is pushed down, permanent magnet, processing technology are fixed by laser welding or other effective welding manners Simply, facilitate batch production.Surface-mount type structure is mostly used greatly compared to traditional permanent magnet machine rotor, and the permanent magnet of this structure is viscous It is attached to rotor forehead, when motor runs at high speed, when especially electronic automobile-used permanent magnetism wheel motor runs at high speed, due to high speed The presence of centrifugal force, surface-mount type structure, which is unable to satisfy, to run at high speed, and limits the maximum speed of motor, reduces the property of motor Can, and the built-in structure of present embodiment is placed in permanent magnet inside rotor core 21, and the first tabletting of fixed permanent magnet 251 and second tabletting 252 only have 0.5mm thick, further save the axial space of motor, reduce motor volume, facilitate electricity Shaft orientation layout in motor-car.

Further, the first tabletting 251 and the second tabletting 252 of present embodiment are all made of non-magnetic stainless steel material It is made, can also be other non-magnetic alloy materials in other embodiments.The rotor core 21, first of present embodiment is pressed Piece 251 and the second tabletting 252 are all made of un-conducted magnetic material, are because permanent magnet and permeability magnetic material can additionally produce an annular magnetic Road increases the loss of permanent magnet, reduces the efficiency of motor, if material magnetic conduction when in addition producing, is not easy to rotor 20 Assembly and processing, increase production difficulty.

Air gap between first stator module 30 and the rotor 20 described in present embodiment, with second stator module Air gap between 40 and the rotor 20 is identical, facilitates the assembly of early period and the control in later period, makes magnetic field more evenly.This embodiment party The air gap of formula controls in 1.5mm-2mmm.Specifically, the air gap is the first stator module 30 and/or the second stator module 40 With the vertical range between rotor core 21.

Referring to figs 5 and 6 such as Fig. 1, first stator module 30 includes the first cover 31, first set gradually End cap 32 and the first stator 33, first stator 33 is connect by bearing 50 with the shaft 22, in the first end cover 32 The first water cooling component 34 is equipped with towards 31 side of the first cover；And/or second stator module 40 includes setting gradually The second cover 41, second end cover 42 and the second stator 43, second stator 43 connect by bearing 50 with the shaft 22, The second water cooling component 44 is equipped with towards 41 side of the second cover in the second end cover 42.First stator module 30 And/or the second air gap between stator module 40 and rotor 20 be between the first stator 33 and rotor core 21 it is vertical away from From and/or vertical range of the air gap between the second stator 43 and rotor core 21.

First end cover 32 due to being equipped with the first water cooling component 34 is closely connect with the first stator 33, thus the first stator 33 Generated heat will be conducted to first end cover 32 in the process of running, the heat that will be conducted by the first water cooling component 34 It takes away, improves the heat dissipation performance of motor.Similarly, the second water cooling component 44 can take away the heat of the second stator 43.

In order to facilitate heat transfer, it is close to the first stator 33 towards 33 side of the first stator in the first end cover 32 The binding face of side is equipped with heat-conducting layer；And/or heat-conducting layer is equipped with towards 43 side of the second stator in the second end cover 42. Heat-conducting layer described in present embodiment is heat-conducting resin, in other embodiments can be thermally conductive for heat conductive silica gel or heat-conducting silicone grease etc. Material.

Specifically, the first water cooling component 34 includes the first Cyclotron water channel set on 32 side wall of first end cover 341, and be connected to respectively with 341 both ends of the first Cyclotron water channel and extend to the first water inlet outside first end cover 342 and first water outlet 343, and the direction at first water inlet 342 and the first outlet mouth of a river 343 is directed to first end cover 32 Axle center, be conducive to coolant liquid pass in and out；The first Cyclotron water channel 341 makes full use of the space of first end cover 32, increases water The length in road, to improve water-cooling effect.Similarly, the second water cooling component 44 includes being set to 42 side of second end cover Second Cyclotron water channel 441 of wall, and be connected to respectively with 441 both ends of the second Cyclotron water channel and extend to second end cover The second water inlet 442 and the second water outlet 443 outside 42, and the side of second water inlet 442 and the second outlet mouth of a river 443 To the axle center for being directed to first end cover 32.The first Cyclotron water channel 341 wriggles around 32 center of first end cover to be arranged, described Second Cyclotron water channel 441 wriggles around 42 center of second end cover to be arranged.

Present embodiment flows in and out in order to facilitate water of radiation, in first water inlet 342 and the first water outlet The first water inlet pipe 344 and the first outlet pipe 345 is also respectively connected in 343 end；First water inlet pipe 344 and the first water outlet Water pump in pipe 345 and automobile links, to form a circulating water-cooling heat radiating system.Similarly, in second water inlet The second water inlet pipe 444 and the second outlet pipe 445 is also respectively connected in the end of mouth 442 and the second water outlet 443；Described second into Water pipe 444 and the second outlet pipe 445 link with the water pump in automobile.

Further, the first Cyclotron water channel 341 described in present embodiment is in bayonet-like recess shape, first Cyclotron The slot opening side of water channel 341 is towards 31 side of the first cover；Slot opening side seal is lived by the first cover 31, from And achievees the effect that coolant liquid and circulated along water channel.Specifically, it is set between the first end cover 32 and first cover 31 There is sealing ring, the outer ring that the first end cover 32 is equipped with 34 place side of the first water cooling component is equipped with for accommodating the sealing ring Seal groove 321, so that first cover 31 is cooperated by sealing ring and special seal gum, and be fixed by screws in first On end cap 32, makes to seal in first end cover 32 in the first Cyclotron of bayonet-like recess water channel 341, form sealing water channel.Similarly, institute The second Cyclotron water channel is stated in 441 bayonet-like recess shapes, the slot opening side of the second Cyclotron water channel 441 is towards described Second cover, 41 side, and the second end cover 42 is identical with the cooperation junction structure of the second cover 41.

The cooling system that above-mentioned two groups of water cooling components are formed, structure and radiating mode are completely the same, can be effectively to motor It radiates, while structure is simple, good cooling results.Working principle: by taking the first water cooling component 34 as an example, cooling water pump passes through the One water inlet pipe 345 provides coolant liquid, coolant liquid shape between first end cover 32 and the first cover 31 to 342 coolant liquid of the first water inlet At closed first swirl type water channel 341 in flow, to first end cover 32 connect the first stator 33 and bearing 50 carry out it is scattered Heat drop temperature enters water pump finally by the first water outlet 343 and the outflow of the first outlet pipe 345, realizes cooling circulation.The The working principle of two water cooling components 44 is similarly.

First stator 33 of this implementation normal form and the stator core of the second stator 43 roll up bed using dedicated punching in processing, Jet-bedding and the winding one-pass molding for making stator core, had not only improved the utilization rate of silicon steel sheet, but also reduce the loss of motor.Stator Punching uses high magnetic permeability, the low-loss high grade silicon steel piece of 0.3-0.5mm.

The motor of present embodiment further includes set on described in the rotary transformer 60 of 31 side of the first cover and protection The transformer case 70 of rotary transformer 60.The rotary transformer 60 uses reluctance type, is used to accurate detection, acquisition rotor 20 Position signal.

Present embodiment also provides a kind of automobile, and the automobile includes the motor as described in above-mentioned any embodiment.This reality The motor for applying mode is set to wheel side, and is connect by transmission device with wheel.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. a kind of motor, which is characterized in that including shell, rotor, the first stator module and the second stator module；The shell is Hollow cylinder shape, the rotor are arranged in the hollow part of the shell, first stator module and second stator pack Part is respectively arranged on the two relative side of the shell, and the rotor, the first stator module and the second stator module are coaxial Setting；The rotor includes the rotor core equipped with shaft hole and magnetic slot, the shaft in the shaft hole, and is set to Permanent magnet in the magnetic slot；The shaft hole is set to the center of the rotor core, and the magnetic slot is along the rotor iron The circumferencial direction uniform intervals of core are arranged, and the quantity of the magnetic slot is even number；The shape of the magnetic slot is irregular Fan annular, two arcs and the shaft hole of the irregular fan annular are concentric, and two of the irregular fan annular are straight The intersection point of the extended line on side is located on the rotor core, and the intersection point is not overlapped with the axle center of the shaft hole.

2. motor according to claim 1, which is characterized in that the gas between first stator module and the rotor Gap, and second stator module are identical as the air gap between the rotor.

3. motor according to claim 1, which is characterized in that first stator module includes the first face set gradually Lid, first end cover and the first stator, first stator is connect by bearing with the shaft, towards institute in the first end cover The first cover side is stated equipped with the first water cooling component；And/or second stator module includes the second cover set gradually, Two end caps and the second stator, second stator are connect by bearing with the shaft, towards described the in the second end cover Two cover sides are equipped with the second water cooling component.

4. motor according to claim 3, which is characterized in that set in the first end cover towards first stator side There is heat-conducting layer；And/or heat-conducting layer is equipped with towards second stator side in the second end cover.

5. motor according to claim 3, which is characterized in that the first water cooling component includes being set to the first end cover First Cyclotron water channel of side wall, and be connected to and extend to outside first end cover with the first Cyclotron water channel both ends respectively The first water inlet and the first water outlet；And/or the second water cooling component includes set on the second of the second end cover side wall Cyclotron water channel, and be connected to respectively with the second Cyclotron water channel both ends and extend to the second water inlet outside second end cover Mouth and the second water outlet.

6. motor according to claim 5, which is characterized in that the first Cyclotron water channel is in bayonet-like recess shape, institute The slot opening side for stating the first Cyclotron water channel is towards first cover side；And/or the second Cyclotron water channel is in Bayonet-like recess shape, the slot opening side of the second Cyclotron water channel are towards second cover side.

7. motor according to claim 6, which is characterized in that be equipped between the first end cover and first cover close Seal；And/or sealing ring is equipped between the second end cover and second cover.

8. motor according to claim 1-7, which is characterized in that the rotor further includes being respectively arranged on described turn It is equipped with through slot in the first tabletting and the second tabletting of sub- iron core two relative side, first tabletting and second tabletting, The position of the through slot and quantity respectively with the position of the magnetic slot and quantity Matching, the shape of the through slot and the magnet steel The shape of slot is consistent, and the size of the through slot is less than the size of the magnetic slot.

9. motor according to claim 8, which is characterized in that the rotor core, the first tabletting and the second tabletting are Non-magnetic structure.

10. a kind of automobile, which is characterized in that including such as described in any item motors of claim 1-9.