CN110365151A - A kind of circulating cooling permanent magnet synchronous motor - Google Patents
A kind of circulating cooling permanent magnet synchronous motor Download PDFInfo
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- CN110365151A CN110365151A CN201910661376.XA CN201910661376A CN110365151A CN 110365151 A CN110365151 A CN 110365151A CN 201910661376 A CN201910661376 A CN 201910661376A CN 110365151 A CN110365151 A CN 110365151A
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- rotor
- motor
- synchronous motor
- cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 33
- 238000004080 punching Methods 0.000 claims abstract description 48
- 210000003781 tooth socket Anatomy 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 230000007774 longterm Effects 0.000 abstract description 8
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract description 5
- 230000010349 pulsation Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PXAWCNYZAWMWIC-UHFFFAOYSA-N [Fe].[Nd] Chemical compound [Fe].[Nd] PXAWCNYZAWMWIC-UHFFFAOYSA-N 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Abstract
Circulating cooling permanent magnet synchronous motor disclosed by the invention is related to motor field, by the way that cooling duct is arranged on shell, the stability of new-energy automobile long-term work at high temperature is effectively ensured, it is ensured that the stability of Nd-Fe-B permanent magnet in rotor block, the motor is high-efficient by long-term on-board running, the cooling characteristic of motor is good, and it is the best effectively power motor of new-energy automobile that reliability, which is stablized, and the motor is light-weight, power is big, high-efficient, and cooling characteristic is good.And since the permanent magnet of the motor rotor punching on piece is combined in the form of U-shaped or V-type display in permanent magnet trough in rotor punching, the equal approximate sine wave of torque on the rotor be combined by the rotor punching, permanent magnet is circumferentially embedded in rotor block in a manner of near sinusoidal, to which torque pulsation is small, it is high that control system controls precision, be conducive to the weak magnetic speed-up of permanent magnet synchronous motor, preferably improve the performance of permanent magnet, improve the output power and working efficiency of motor.
Description
Technical field
The present invention relates to technical field of motors, and in particular to a kind of circulating cooling permanent magnet synchronous motor.
Background technique
With the development and progress of science and technology, automobile is brought to our life while facilitate, also exacerbate environment and
Energy crisis brings serious pollution to air environment, and the alternate power energy for seeking new energy as automobile is the mankind
Social research topic important at present.
New-energy automobile uses power source of the electric energy as automobile at this stage, specially forever using high-efficient energy-saving environment friendly
Mag-net synchronous motor, but it is larger due to generating thermal energy when motor work, to reduce the working efficiency of motor, therefore, have height
The automobile permanent magnet synchronous motor for imitating cooling performance is ideal Automobile drive mode.
Countries in the world today has had reached most active period to the research of rare earth permanent-magnet synchronization motor, and design permanent magnetism is same
The analytical calculation for walking motor is considerably complicated, selects the research direction for being suitble to efficient vehicle coolant liquid permanent magnet synchronous motor to be us.
It studies for a long period of time into crossing, in existing technical field, selects suitable stator trench structure and rotor permanent magnet Structural assignments
Mode is the key that solve permanent magnet synchronous motor.
Therefore, in view of problem above, it is necessary to propose a kind of novel permanent magnet synchronous motor, it is cooling meeting high efficiency and heat radiation
While improve motor output power and working efficiency.
Summary of the invention
In view of this, the invention discloses a kind of circulating cooling permanent magnet synchronous motor, it is cold by being arranged on electric machine casing
But channel solves the heat dissipation problem of motor, designs further through the structure to stator body and rotor block, guarantees the stability of motor,
Improve the output power and working efficiency of motor.
A kind of circulating cooling permanent magnet synchronous motor that purpose according to the present invention proposes, including shell, it is set in turn in shell
Intracorporal stator body and rotor block, offer cooling duct on the shell, shell end be respectively formed cooling liquid inlet with it is cold
But liquid exports, and the cooling duct is U-shaped or S type is distributed in the circumferential direction of shell.
Preferably, choked flow piece is distributed in the cooling duct, cooled liquid stream shunts after choked flow piece.
Preferably, the cooling duct is a plurality of, and a plurality of cooling duct successively arranges by the circumferential direction of shell and surrounds one group of ring
Shape cooling duct group.
Preferably, multilayer is arranged along the spaced radial of shell in the cooling duct group, forms multilayer cooling duct.
Preferably, the cooling duct area accounts for 70% of housing area or more.
Preferably, the stator body inner ring is distributed with tooth socket, and the tooth socket is embedded in electromagnetic wire, the tooth socket be 24 or
48.
Preferably, the rotor block includes multiple rotor punchings, and multiple rotor punchings are sequentially stacked to form the rotor block,
Shaft hole is provided in the middle part of rotor block, formed on the rotor punching to place permanent magnet, be distributed on same circumference, with
The concentric multiple permanent magnet troughs of shaft hole, combination forms U-shaped or V-structure between adjacent permanent magnet slot, and permanent magnet is by the friendship of the pole the N pole S
The mode replaced is embedded in permanent magnet trough, and the permanent magnet trough is rectangular permanent magnet slot.
Preferably, the rectangular permanent magnet slot is arranged in groups, and every group of rectangle permanent magnet trough group closes to form U-shaped or V-type
Structure, the edge of the rotor punching also form be distributed on same circumference, with shaft hole is concentric and rectangular permanent magnet
The corresponding shoe permanent magnet trough of slot group number, the shoe permanent magnet trough are located at U-shaped or V-type opening.
Preferably, the rotor punching is formed between shoe permanent magnet trough and rectangular permanent magnet slot with rectangle forever
The corresponding rotor block of magnet slot group number forms magnetic bridge every bore.
Preferably, the side of the rotor punching forms rotor corresponding with rectangular permanent magnet slot group number and position
Body groove, stacked multipiece rotor punching circumferentially misplace placement, so that rotor block groove is spliced to form V-type skewed slot along axial direction.
Compared with prior art, the advantages of circulating cooling permanent magnet synchronous motor disclosed by the invention, is:
(1) by the way that cooling duct is arranged on shell in the present invention, new-energy automobile long-term work at high temperature is effectively ensured
Stability, it is ensured that the stability of Nd-Fe-B permanent magnet in rotor block, the motor is high-efficient by long-term on-board running, the drop of motor
Temperature characteristics are good, and it is the best effectively power motor of new-energy automobile, and the motor is light-weight, power is big, efficiency that reliability, which is stablized,
Height, cooling characteristic are good.
(2) rectangular permanent magnet slot and shoe permanent magnet trough are formed on the rotor punching of the motor, adjacent two rectangle is forever
Combination forms U-shaped or V-structure between magnet slot, and permanent magnet is embedded in permanent magnet trough by the extremely alternate mode of the pole N S.Due to permanent magnetism
Body is combined in the form of U-shaped or V-type display in permanent magnet trough in rotor punching, on the rotor be combined by the rotor punching
The equal approximate sine wave of torque, permanent magnet is circumferentially embedded in rotor block in a manner of near sinusoidal, thus torque arteries and veins
To move small, it is high that control system controls precision, and be conducive to the weak magnetic speed-up of permanent magnet synchronous motor, preferably improve the performance of permanent magnet,
Improve the output power and working efficiency of motor.
(3) permanent magnet is embedded in rotor punching permanent magnet trough in a manner of U-shaped or V-type, parallel magnetic field and radial magnetic field
Being overlapped mutually promotes the magnetic field strength of the other side significantly, can effectively reduce the volume of motor in this way, promotes the function of motor
Rate density.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description does simple introduction, it is clear that, the accompanying drawings in the following description is only this hair
Bright some embodiments, it will be clear to the skilled person that without creative efforts, may be used also
Other accompanying drawings can also be obtained according to these attached drawings.
Fig. 1 is the structure chart of rotor punching disclosed by the invention.
Fig. 2 is the structure chart of rotor block disclosed by the invention.
Fig. 3 is the structure chart of stator body disclosed by the invention.
Fig. 4 is electric machine structure figure disclosed by the invention.
Parts title representated by number or letter in figure are as follows:
1- rotor block permanent magnet anchor point；2- rotor block welds groove；3- rotor block groove；4- rotor block pad；5- rotor
Body shaft tip keyway；The oblique magnetic pole anchor point of 6- rotor block；7- heat release hole；8- rotor block mouse cage hole；9- rotor block is every bore；10-
Rectangular permanent magnet slot；11- rotor punching registration holes；12- shoe permanent magnet trough；13- rotor block tip key registration holes；14- rotor
Punching；15-V type skewed slot；16- shaft hole；
10, rotor block 20, stator body, 30, shell
21, tooth socket 22, stator body solder joint 23, stator body weld groove 24, tooth socket bottom 25, stator body locating slot 31, cooling duct
32, import 33, outlet.
Specific embodiment
A specific embodiment of the invention is described briefly with reference to the accompanying drawing.Obviously, described embodiment is only
It is a part of the embodiments of the present invention, rather than whole embodiments, based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, belongs to the scope of protection of the invention.
Fig. 1-Fig. 4 shows preferred embodiments of the present invention, has carried out detailed anatomy to it from different angles respectively.
The invention discloses a kind of circulating cooling permanent magnet synchronous motors to be solved by the way that cooling duct is arranged on electric machine casing
The certainly heat dissipation problem of motor designs further through the structure to stator body and rotor block, guarantees the stability of motor, improve motor
Output power and working efficiency.
Please also refer to Fig. 1 to Fig. 4, circulating cooling permanent magnet synchronous motor disclosed by the invention, including shell 30, successively set
It is placed in stator body 20 in shell 30 and rotor block 10, offers cooling duct 31 on shell 30,30 end of shell is respectively formed
Cooling liquid inlet 32 and cooling liquid outlet 33, cooling duct 31 is U-shaped or S type is distributed in the circumferential direction of shell 30.Pass through cooling
The stability of new-energy automobile long-term work at high temperature is effectively ensured, it is ensured that Nd-Fe-B permanent magnetic in rotor block in the setting in channel
The stability of body, the motor is high-efficient by long-term on-board running, and the cooling characteristic of motor is good, and it is new energy that reliability, which is stablized,
The best effectively power motor of automobile, and the motor is light-weight, power is big, and high-efficient, cooling characteristic is good.
The present invention is efficient vehicle coolant liquid circulation permanent magnet synchronous motor, it has, and revolving speed is high, 4000 turns or less big torques,
Starting current is low, and energy conservation is suitble to high-low pressure operation interval, and light-weight, specific power density is big, and torque density is high, improves energy-saving ring
The advantages that protecting grade.
Further, choked flow piece (not shown) is distributed in cooling duct 31, cooled liquid stream shunts after choked flow piece, can
It is further to increase heat dissipation area, improve radiating efficiency.
Wherein, the cooling duct can be a plurality of, and a plurality of cooling duct successively arranges by the circumferential direction of shell and surrounds one group of ring
Shape cooling duct group or a plurality of cooling are come round by head and the tail is linked to be a cooling duct, specifically with no restrictions.
In other embodiments, cooling duct group may also include the spaced radial setting multilayer along shell, and it is cold to form multilayer
But the purpose that multilayer radiates step by step is realized, depending on specific heat-removal modalities are as needed, herein with no restrictions in channel.
Preferably, cooling duct discharge area accounts for 70% of housing area or more, can be 80% or 90% etc., guarantee shell
It can the area appropriate that increase cooling duct in the case where structural strength.
Further, it is provided with fan blade (not shown) on motor output shaft of the present invention, in rotor operation, fan blade is by motor
Hot-fluid around peritrochanteric and stator coil pushes stator to, is conducted to the heat-conducting liquid in electric machine casing by stator and takes electricity out of
Machine, can preferably improve the heat dissipation effect of motor inner core body in this way, the working environment that permanent magnet synchronous motor can be kept stable, from
And reach reduction electric current, increase the hot square of motor, motor is kept to be in the purpose to work under high-efficiency environmental for a long time.
Fig. 3 is referred to, tooth socket 21 is distributed in 20 inner ring of stator body, and tooth socket 21 is embedded in electromagnetic wire, and tooth socket is 24 or 48
It is a.Specifically, shell 30 socket-connects with stator body 20.Further, auxiliary flute can be also opened up on the crown of stator (not show
Out), to reduce cogging torque, the thickness of cogging torque can be reduced by opening auxiliary flute, be equivalent to and increased gear grooved torque fundamental wave
Periodicity, the new cogging torque that auxiliary flute is formed plays setoff to the torque of original tooth socket and uses, so that total tooth socket be made to turn
Square amplitude reduces.Crown, which opens auxiliary flute, also increases effective air gap, advantageously reduces cogging torque, and by research, crown is opened
Air gap, the reduction of magnetic conductance are little after groove, so the influence to counter electromotive force is little, the groove width of auxiliary flute takes original tooth socket
Slot opening is best.
Referring to Figure 1 with Fig. 2, rotor block 10 includes multiple rotor punchings 14, and multiple rotor punchings 14 are sequentially stacked to be formed
Rotor block 10 is provided with shaft hole 16 in the middle part of rotor block 10, formed on rotor punching 14 to place permanent magnet, be distributed in it is same
Multiple permanent magnet troughs on one circumference, concentric with shaft hole, combination forms U-shaped or V-structure, permanent magnet between adjacent permanent magnet slot
It is embedded in permanent magnet trough by the extremely alternate mode of the pole N S, wherein the permanent magnet trough is rectangular permanent magnet slot 10.Rectangle permanent magnetism
Body slot 10 is arranged in groups, and every group of combination of rectangle permanent magnet trough 10 forms U-shaped or V-structure, and the edge of rotor punching 14 is also
Form be distributed on same circumference, with shaft hole is concentric, corresponding with rectangular permanent magnet slot group number shoe permanent magnet trough
12, shoe permanent magnet trough 12 is located at U-shaped or V-structure opening.Wherein, 42 degree of shoe neodymium iron are put into shoe permanent magnet trough
Boron permanent magnet pole is put into rectangle Nd-Fe-B permanent magnet magnetic pole in rectangular permanent magnet slot, and is embedded in for segmented, thus structure
At p-m rotor body.Wherein the central angle of shoe permanent magnet trough is removed is outside one's consideration using 42, also can be used 40 degree or 45 degree etc., specific root
Depending on needs.The permanent magnet that motor rotor is embedded in is segmented, is come by the power, revolving speed, torque of automobile permanent magnet motor
The height of rotor is set, in invariable power high-speed cruising, motor permanent magnet leakage field is big, and weak magnetic speed-up ability is strong, when low speed is run
Motor flux leakage is small, and output torque is big, so that torque pulsation is small, control system controls precision height, effectively improves permanent-magnet synchronous
The service life of motor is the optimal driving motor of new-energy automobile.
Wherein, stator body uses D2000 type, D350 type, and D270 model silicon steel sheet group is rolled up respectively at stator punching, loop
It is around between multiple tooth sockets, stator punching combines to form stator body with loop.Equally, rotor block uses D2000 type or D350
For the silicon steel sheet of type or D270 model as rotor punching, built-in permanent magnet on rotor punching, rotor block two sides are provided with end face,
Non-magnetic material end face is covered on end face, non-magnetic material constitutes mouse cage through special process, and the above structure is combined from composition rotor
Assembly.
Further, permanent magnet trough is arranged in groups, the rectangular permanent magnet slot 10 that permanent magnet trough is six groups or eight groups, setting
It is formed in one end at rotor punching edge 2-3mm, and in each rectangular permanent magnet slot 10 close to shaft hole 16
Rotor block permanent magnet anchor point 1, the positioning for permanent magnet.And in rectangular permanent magnet 10 V-shaped structural arrangement of slot, it is adjacent
Two rectangular permanent magnet slots 10 towards shaft hole 16 be open angle be 35 ° -42 °, preferably 36 °, 40 °.Towards rotor punching
Rim openings angulation is 155 ° -172 °, preferably 160 °, 170 °.Permanent magnet is embedded in rectangle by the extremely alternate mode of the pole N S
In permanent magnet trough 10.
Further, the edge of rotor punching also form be distributed on same circumference, with shaft hole it is concentric, with it is rectangular
The corresponding shoe permanent magnet trough 12 of 10 groups of numbers of shape permanent magnet trough.The shoe permanent magnet trough 12 is set to two V-type rectangle permanent magnetism
Body slot 10 towards at rotor punching rim openings, meanwhile, between shoe permanent magnet trough 12 and rectangular permanent magnet slot 10 also at
Type has rotor block corresponding with 10 groups of numbers of rectangular permanent magnet slot every bore 9, forms magnetic bridge, it is each every bore 9 be five sides
Shape hole, specific constructive form is with no restrictions.
Further, the side of rotor punching forms the corresponding multiple groups of 10 groups of numbers of rectangular permanent magnet slot and position and turns
Daughter groove 3, every group rotor body groove 3 include two monomer grooves, and corresponding to molding again between two monomer grooves, there are two bands to turn
The rotor block of daughter pad 4 welds groove 2.
Further, rotor punching forms and rectangular permanent magnet between rectangular permanent magnet slot 10 and shaft hole 16
The corresponding heat release hole 7 of 10 groups of numbers of slot, the heat release hole 7 are to be set to two rectangular permanent magnet slots 10 towards 16 direction of shaft hole
Opening round hole, pore size is unlimited, can adjust accordingly according to required.Between heat release hole 7 and shaft hole 16
It is disposed with the oblique magnetic pole anchor point 6 of multiple rotor blocks, the oblique magnetic pole anchor point 6 of the rotor block is four circles being distributed on same circumference
Shape hole, pore size is unlimited, can adjust accordingly according to required.It is arranged between rectangular permanent magnet slot 10 and heat release hole 7
Have and 10 groups of number corresponding rotor block mouse cage holes 8 of rectangular permanent magnet slot.Wherein, 8-16 are additionally provided on rotor punching to turn
Daughter mouse cage hole constitutes motor mouse cage.
Further, the edge of shaft hole 16 is correspondingly arranged on rotor punching registration holes 11, rotor block tip key registration holes
13 and rotor block shaft tip keyway 5.
To sum up, due to the permanent magnet of the motor rotor punching sheet in the present invention in rotor punching in permanent magnet trough with U-shaped or V
The form of the display of type combines, and cooperates the design of shoe permanent magnet trough and rotor block groove, so that rotor punching is combined into
Rotor on the equal approximate sine wave of torque, permanent magnet is circumferentially embedded in rotor block in a manner of near sinusoidal, from
And torque pulsation is small, control system controls precision height, is conducive to the weak magnetic speed-up of permanent magnet synchronous motor, preferably improves permanent magnet
Performance.
Further, rotor block includes the above-mentioned rotor punching 14 of stacked multistage, and rotor body side surface is provided with to be turned by multistage
Rotor block groove in sub- punching shifts to install and the V-type skewed slot 15 that is formed.Specifically, the height of rotor block is by magneto
Power, revolving speed, torque determine that every section 10-20 millimeters be best.Since permanent magnet presses multistage dislocation combination in rotor block, and
Can height as required and customize, so that permanent magnet synchronous motor electromagnetic eddy be made to be preferably minimized, thickness is with design of electrical motor institute
Need with a thickness of standard, length is determined that, to reduce torque pulsation, motor permanent magnet is not allowed by the size of rotor outer diameter
Easy loss of excitation, low speed output torque is big, the resistance to a height of standard of temperature.
In conclusion circulating cooling permanent magnet synchronous motor disclosed by the invention has by the way that cooling duct is arranged on shell
Effect guarantees the stability of new-energy automobile long-term work at high temperature, it is ensured that the stability of Nd-Fe-B permanent magnet in rotor block, it should
Motor is high-efficient by long-term on-board running, and the cooling characteristic of motor is good, and reliability is stablized, and is the best efficient of new-energy automobile
Power motor, and the motor is light-weight, power is big, and high-efficient, cooling characteristic is good.And due to the permanent magnetism of the motor rotor punching on piece
Body is combined in the form of U-shaped or V-type display in permanent magnet trough in rotor punching, on the rotor be combined by the rotor punching
The equal approximate sine wave of torque, permanent magnet is circumferentially embedded in rotor block in a manner of near sinusoidal, thus torque arteries and veins
To move small, it is high that control system controls precision, and be conducive to the weak magnetic speed-up of permanent magnet synchronous motor, preferably improve the performance of permanent magnet,
Improve the output power and working efficiency of motor.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized and use the present invention.
Various modifications to these embodiments mode will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit and scope of the present invention.Therefore, originally
Invention is not intended to be limited to the embodiments shown herein, and is to fit to the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (10)
1. a kind of circulating cooling permanent magnet synchronous motor, including shell, it is set in turn in the intracorporal stator body of shell and rotor block, it is special
Sign is, cooling duct is offered on the shell, shell end is respectively formed cooling liquid inlet and cooling liquid outlet, described cold
But channel is U-shaped or S type is distributed in the circumferential direction of shell.
2. circulating cooling permanent magnet synchronous motor according to claim 1, which is characterized in that be distributed in the cooling duct
Choked flow piece, cooled liquid stream shunt after choked flow piece.
3. circulating cooling permanent magnet synchronous motor according to claim 1, which is characterized in that the cooling duct be it is a plurality of,
It successively arranges by the circumferential direction of shell and surrounds one group of annular cooling channel group in a plurality of cooling duct.
4. circulating cooling permanent magnet synchronous motor according to claim 3, which is characterized in that the cooling duct group is along shell
Spaced radial be arranged multilayer, formed multilayer cooling duct.
5. circulating cooling permanent magnet synchronous motor according to claim 1, which is characterized in that the cooling duct area accounts for shell
70% or more of bulk area.
6. circulating cooling permanent magnet synchronous motor according to claim 1, which is characterized in that the stator body inner ring is distributed with
Tooth socket, the tooth socket are embedded in electromagnetic wire, and the tooth socket is 24 or 48.
7. circulating cooling permanent magnet synchronous motor according to claim 1, which is characterized in that the rotor block includes multiple turns
Sub- punching, multiple rotor punchings are sequentially stacked to form the rotor block, are provided with shaft hole, the rotor punching in the middle part of rotor block
On form to place permanent magnet, be distributed on same circumference, the multiple permanent magnet troughs concentric with shaft hole, adjacent permanent magnet
Combination forms U-shaped or V-structure between slot, and permanent magnet is embedded in permanent magnet trough by the extremely alternate mode of the pole N S, the permanent magnet trough
For rectangular permanent magnet slot.
8. circulating cooling permanent magnet synchronous motor according to claim 7, which is characterized in that the rectangular permanent magnet slot at
Group setting, every group of rectangle permanent magnet trough group close to form U-shaped or V-structure, and the edge of the rotor punching also forms
Be distributed on same circumference, with shaft hole is concentric, corresponding with rectangular permanent magnet slot group number shoe permanent magnet trough, the shoe
Permanent magnet trough is located at U-shaped or V-type opening.
9. circulating cooling permanent magnet synchronous motor according to claim 8, which is characterized in that the rotor punching shoe forever
Rotor block corresponding with rectangular permanent magnet slot group number is formed between magnet slot and rectangular permanent magnet slot every bore, is formed
Magnetic bridge.
10. circulating cooling permanent magnet synchronous motor according to claim 7, which is characterized in that the side of the rotor punching
Rotor block groove corresponding with rectangular permanent magnet slot group number and position is formed, stacked multipiece rotor punching is circumferentially wrong
Position is placed, so that rotor block groove is spliced to form V-type skewed slot along axial direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910661376.XA CN110365151A (en) | 2019-07-22 | 2019-07-22 | A kind of circulating cooling permanent magnet synchronous motor |
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| CN201910661376.XA CN110365151A (en) | 2019-07-22 | 2019-07-22 | A kind of circulating cooling permanent magnet synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112886739A (en) * | 2021-01-22 | 2021-06-01 | 珠海格力电器股份有限公司 | Rotor core, motor rotor, motor |
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| CN107210653A (en) * | 2015-01-30 | 2017-09-26 | 普里派尔技术有限公司 | Motor stator with liquid-cooling type tooth |
| CN105680628A (en) * | 2015-06-23 | 2016-06-15 | 扬州科光技术发展有限公司 | Self-circulation liquid cooling permanent magnetic motor of high power rate |
| CN206302316U (en) * | 2017-01-05 | 2017-07-04 | 安徽东道新能源科技有限公司 | A kind of liquid cooling permagnetic synchronous motor |
| CN109149811A (en) * | 2017-06-27 | 2019-01-04 | 上海电驱动股份有限公司 | A kind of rotor punching of permanent magnet synchronous motor |
| CN108110927A (en) * | 2017-12-29 | 2018-06-01 | 上海崇林汽车电子有限公司 | A kind of electric vehicle permanent magnet motor rotor punching |
| CN209046388U (en) * | 2018-08-09 | 2019-06-28 | 合肥中庆投资有限公司 | A kind of vehicle high speed permanent-magnetic synchronous motor rotor and punching |
| CN210225134U (en) * | 2019-07-22 | 2020-03-31 | 宁波华表机械制造有限公司 | Circulative cooling PMSM |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112886739A (en) * | 2021-01-22 | 2021-06-01 | 珠海格力电器股份有限公司 | Rotor core, motor rotor, motor |
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