CN108808896B - Segmented armature motor stator and manufacturing process thereof - Google Patents
Segmented armature motor stator and manufacturing process thereof Download PDFInfo
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- CN108808896B CN108808896B CN201810736947.7A CN201810736947A CN108808896B CN 108808896 B CN108808896 B CN 108808896B CN 201810736947 A CN201810736947 A CN 201810736947A CN 108808896 B CN108808896 B CN 108808896B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 118
- 238000007789 sealing Methods 0.000 claims abstract description 84
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000017525 heat dissipation Effects 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 54
- 239000002184 metal Substances 0.000 claims description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 3
- 230000005855 radiation Effects 0.000 abstract description 4
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 21
- 230000004907 flux Effects 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 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
- 239000008384 inner phase Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- 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
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides a segmented armature motor stator and a manufacturing process thereof, and belongs to the technical field of motors. The motor solves the problems that the magnetic circuit of the existing motor stator is longer and the overall performance is poor; the structure is complex, the insulativity is poor, and the heat dissipation performance is poor; complicated manufacturing process, low cost performance and the like. The invention comprises a shell, a heat radiation system, a terminal structure, a sealing piece and a plurality of armature units which are arranged in the shell and distributed in a ring shape, wherein a placement space of the armature units is formed between the shell and the sealing piece, the heat radiation system comprises an air inlet mechanism and a cooling channel, the air inlet mechanism can convey cold air to the cooling channel, the cooling channel surrounds each armature unit, a heat conduction mechanism is arranged between the cooling channel and the armature units, and an air outlet communicated with the cooling channel is also arranged on the shell. The invention adopts the resin encapsulation process, has high integral strength of the stator, is favorable for improving insulativity, degradation performance and heat dissipation performance, and has simple and firm structure and good heat dissipation performance.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a segmented armature motor stator and a manufacturing process thereof.
Background
With the shortage of energy sources of gasoline and oil and the growing importance of people on environmental problems, the green and environment-friendly electric automobile becomes an important way for people to go out in the future. The electric automobile driving system is developed in the directions of high torque density, high efficiency and wide speed regulation ratio, and the most basic power performance requirements of the electric automobile are met no matter the electric automobile driving system is a traditional motor or a novel motor, and various novel motors mainly take the improvement of torque density and efficiency as the points of force. Rare earth permanent magnet motors, alternating current synchronous motors and switched reluctance motors are the main development directions. The rare earth permanent magnet motor has highest efficiency in all motors, because permanent magnets are adopted for excitation, and no power is consumed; the magnetic flux density is high, and high torque is obtained, so that the motor is small in size and light in weight.
The axial flux motor has the characteristics of short axial dimension, compact structure, high torque density, high efficiency and the like, and is suitable for the occasion of an electric drive system. The motor air gap is planar, and the air gap magnetic field is distributed along the axial direction. The first motor in the world of faraday's invention was an axial motor, limited by material and skill level, and axial flux motors have not been developed further for a significant period of time thereafter. With the progress of scientific technology, the problems of low power density, low iron core utilization rate, difficult cooling and the like of the traditional cylindrical motor can be solved in the axial flux motor due to the emergence of novel materials and structures and the improvement of the technological level. Axial flux machines are of the single stator single rotor, double stator single rotor, single stator double rotor, and multiple disk type. The stator of the existing axial flux motor is formed by stamping and winding silicon steel sheets, the magnetic circuit is longer, the utilization rate of magnetic conductive materials is not high, and the overall performance is not good; the structure is complex, the insulativity is poor, and the heat dissipation performance is poor; the manufacturing process is complex and the cost performance is low.
Disclosure of Invention
The invention aims at solving the defects of the existing motor stator and provides a segmented armature motor stator and a manufacturing process thereof, wherein the segmented armature motor stator has the advantages of simple and compact structure, high torque density, high efficiency, good insulativity and good heat dissipation performance, and the manufacturing process adopts a resin encapsulation process, so that the process is simple and the overall strength of the stator is high.
The aim of the invention can be achieved by the following technical scheme:
The stator of the segmented armature motor is characterized by comprising a shell, a heat dissipation system, a terminal structure, a sealing piece and a plurality of armature units which are arranged in the shell and distributed annularly, wherein a placement space of the armature units is formed between the shell and the sealing piece, the heat dissipation system is arranged on the shell and can dissipate heat of the armature units, the heat dissipation system comprises an air inlet mechanism and a cooling channel, the air inlet mechanism can convey cold air to the cooling channel, the cooling channel surrounds each armature unit, a heat conduction mechanism is arranged between the cooling channel and the armature units, and an air outlet communicated with the cooling channel is also arranged on the shell.
The terminal structure is arranged on the shell and used for connecting the inner phase line and the outer phase line of the shell. The shell is annular. The cooling channel is arranged on the shell and is in an annular groove shape, and the cooling channel is coaxially arranged with the ring formed by each armature unit. The heat transfer between the armature unit and the cooling channel can be realized through the heat conduction mechanism, and the heat of the armature unit can be brought out to the outside through cold air of the cooling channel.
Preferably, the armature unit comprises an iron core, a framework and coils, wherein the iron core is inserted into a through cavity of the framework, and the coils are wound on the framework corresponding to the iron core to form windings. The framework is provided with a long hole communicated with the through cavity of the framework.
Preferably, the iron core is made of SMC material.
Preferably, the iron core comprises two identical stator teeth, and one ends of the two stator teeth are respectively inserted from the ends of the corresponding frameworks to form mirror image distribution.
Preferably, the sealing element comprises a sealing ring, a first sealing plate and a second sealing plate, wherein the first sealing plate and the second sealing plate are arranged at two ends of the shell and are annular, and the sealing ring is arranged between the first sealing plate and the second sealing plate and is respectively in butt joint with inner rings of the first sealing plate and the second sealing plate.
The invention provides a multiple of 3 armature units, and the armature units are arranged at equal intervals along the circumferential direction of the sealing ring. The armature units are circumferentially arranged at regular intervals along the axis of the seal ring on the outer periphery of the seal ring.
The integral outer ring and the integral inner ring formed by arranging the armature units in this way are all round.
The first sealing plate and the second sealing plate are arranged in parallel, and the sealing ring is perpendicular to the first sealing plate and the second sealing plate.
Preferably, the heat conducting mechanism comprises a plurality of heat conducting rib plates arranged on the shell at the cooling channel, the plurality of heat conducting rib plates are circumferentially arranged at equal intervals along the cooling channel, an embedding space of the armature unit is formed between two adjacent heat conducting rib plates, and windings of the armature unit positioned in the embedding space are in contact with the heat conducting rib plates. Each heat conducting rib plate is integrally arranged with the shell.
The heat conducting rib plate is arranged between the sealing rings and the cooling channels. The heat conducting rib not only plays a role in heat dissipation but also plays a role in supporting the armature unit. The cooling channel and the shell are sealed by a cooling channel sealing plate. The cooling channel is a closed cooling channel through the cooling channel sealing plate, so that after the air inlet mechanism conveys cold air to the cooling channel, the cooling effect of the cold air in the cooling channel is better.
Preferably, the air inlet mechanism comprises a plurality of cooling fans arranged on the shell, and air outlets of the cooling fans are opposite to the cooling channels.
Preferably, a cooling fan is arranged on the shell, the air port of the cooling fan is opposite to the cooling channel, and an air guide structure is arranged at the air port of the cooling fan and the air outlet of the cooling channel, so that cold air blown out by the cooling fan can flow in semi-rings separated by the two air guide structures and flow to the outside.
The arrangement of the two air guide structures enables cold air blown out by the cooling fan to be divided into two paths to circulate in the cooling channel, so that the flow path of the cold air is reduced, and the winding cooling of the armature unit is better realized under the condition that the energy consumption of the cold air blown by the cooling fan is the same.
Preferably, a plurality of turbulence structures are correspondingly arranged on two sides of the cooling channel.
Preferably, the terminal structure include terminal seat, a plurality of metal terminal and fastening bolt, the terminal seat set firmly on the casing, a plurality of metal terminal intervals set up on the terminal seat, the bottom (the one end that is close to the armature unit) of each metal terminal passes terminal seat and casing and is located the inner chamber of casing, the bottom of metal terminal is provided with the blind hole, the top (the one end opposite with the bottom) is provided with the screw hole, fastening bolt can with the screw hole threaded connection of corresponding metal terminal. The metal terminals are provided with three (three-phase motor).
Each internal phase line of the stator is electrically connected with the bottom end of the corresponding metal terminal (inserted into a blind hole at the bottom end of the metal terminal), each fastening bolt is initially separated from the corresponding metal terminal, the connecting end (with a copper nose) of each external phase line is arranged on the top end face of the metal terminal, and after a limiting ring is added, the fastening bolts are inserted and screwed up, so that the electrical connection of the external phase line and the internal phase line is realized.
Preferably, the shell is provided with a slot communicated with the inner cavity of the shell, the terminal seat is provided with an inserting block at a corresponding position, and the terminal seat and the shell are fixedly connected through the first fixing piece after the inserting block of the terminal seat is inserted into the slot. The first fixing piece comprises a plurality of screws.
Preferably, the corresponding position of the terminal seat is provided with a plurality of through holes matched with the shape of the metal terminal at intervals, each through hole penetrates through the upper end face (the face close to the limiting ring) of the terminal seat and the lower end face of the insertion block, and the metal terminal is positioned in the corresponding through hole.
Preferably, the upper end face of the terminal seat is further provided with a plurality of insulating partition boards, the insulating partition boards are vertically arranged on the upper end face of the terminal seat at intervals, a mounting station of the metal terminal and the external phase line is formed between two adjacent insulating partition boards, and the top end of each metal terminal is located at the corresponding mounting station.
Preferably, the terminal structure further comprises a terminal cover, the terminal cover is arranged on the terminal seat, and the terminal cover is fixedly connected with the shell through the second fixing piece. The second fixing piece comprises a plurality of fixing screws, the lower end face of the terminal cover is located on the shell, and the terminal cover is fixedly connected with the shell through the plurality of fixing screws.
Preferably, the terminal base and the terminal cover are both made of insulating materials.
The manufacturing process of the stator of the segmented armature motor is characterized by comprising the following steps:
a. The shell is formed by machining an aluminum alloy, a cooling channel and a plurality of heat conducting rib plates are arranged on the shell, the plurality of heat conducting rib plates are circumferentially arranged at equal intervals along the axis of the cooling channel, a cooling channel sealing plate is arranged between the cooling channel and the shell, and a sealing cavity is formed between one side of the cooling channel sealing plate far away from the cooling channel and the shell;
b. winding the coil on the framework and then placing the coil between the corresponding heat conducting rib plates;
c. The terminal structure is installed, the terminal seat is placed on the shell and fixedly connected with the shell, each metal terminal is placed in a corresponding through hole of the terminal seat, an internal phase line and an external phase line are connected, the internal phase line is welded at the bottom end of the metal terminal, the metal terminal is provided with a threaded hole, and the external phase line is fixed at the top end of the metal terminal through a corresponding fastening bolt;
d. Two symmetrical stator teeth are inserted from two ends of the framework, and then a first sealing plate, a second sealing plate and a sealing ring are installed; the stator teeth are provided with 12 pairs, and each pair of stator teeth is inserted from two ends of the corresponding framework.
E. And an injection hole is formed in the plate surface of the second sealing plate and is communicated with the sealing cavity, resin is injected into the sealing cavity through the injection hole, and all the components form a whole after the resin is solidified.
All the components comprise a shell, each armature unit, a first sealing plate, a second sealing plate, a sealing ring and the like, so that each armature unit is in an isolated state from the outside, and the armature units can be prevented from aging, damage and the like.
Compared with the prior art, the invention has the following beneficial effects: the armature unit comprises an iron core, a framework and a coil, wherein the iron core is made of SMC materials, so that the effective cost of the motor can be greatly reduced, and the high torque density of the motor is improved; the heat dissipation system is arranged, the cooling channel is close to the winding with the largest heat productivity to the greatest extent, the heat resistance between the heat source and the cold air is low, and the heat dissipation efficiency is high; a heat conducting rib plate is arranged between the windings, so that heat at two sides of the windings can be rapidly guided to the cooling channel; the cooling channel is in a closed form, and the windings are cooled by two paths, so that the maximum utilization of cooling air is realized; the cooling channel is designed with a turbulent structure, so that a large amount of turbulence can be manufactured, and the heat dissipation efficiency is improved; the cooling channel is directly machined by the shell, no additional pipeline is needed, and the cost is low; the cooling fans can adopt a plurality of serial connection modes, so that the required cooling capacity can be conveniently adjusted; the winding adopts an independent coil, so that the winding process is simplified; the resin encapsulation process is adopted, so that the overall strength of the stator is high, and the insulation property, the degradation performance and the heat dissipation performance are improved; the terminal structure has good insulating property, high protection level, high mechanical strength, few parts and simple structure and is convenient to maintain.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a side view of the present invention;
FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 4;
FIG. 6 is a schematic view of a portion of the structure of the present invention;
FIG. 7 is a schematic view of a portion of the structure of the present invention;
FIG. 8 is a schematic view of a metal terminal structure;
FIG. 9 is a schematic view of another directional structure of a metal terminal;
FIG. 10 is a schematic view of a portion of the structure of the present invention;
Fig. 11 is a schematic structural view of a terminal block;
Fig. 12 is a schematic view of a structure of the terminal block in another direction.
In the figure, 1, a shell; 2. an iron core; 3. a skeleton; 4. a seal ring; 5. a first sealing plate; 6. a second sealing plate; 7. a cooling channel; 8. a bottom plate; 9. a ring plate; 10. a cooling channel sealing plate; 11. a heat conducting rib plate; 12. a heat radiation fan; 13. a turbulence block; 14. a terminal base; 15. a metal terminal; 16. a fastening bolt; 17. a blind hole; 18. a threaded hole; 19. copper nose; 20. a limiting ring; 21. a slot; 22. inserting blocks; 23. a through hole; 24. an insulating separator; 25. a terminal cover; 26. a coil; 27. sealing the chamber; 28. and an injection hole.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 12, the stator of the segmented armature motor provided by the invention comprises a shell 1, a heat dissipation system, a terminal structure, a sealing element and a plurality of annularly distributed armature units which are arranged in the shell 1. A seating space of the armature unit is formed between the housing 1 and the sealing member. The housing 1 is annular.
The armature unit comprises an iron core 2, a framework 3 and a coil 26, wherein the iron core 2 is inserted into a through cavity of the framework 3, and the coil 26 is wound on the framework 3 corresponding to the iron core 2 to form a winding. The core 2 is made of SMC material. The iron core 2 comprises two identical stator teeth, and one ends of the two stator teeth are respectively inserted from the ends of the corresponding frameworks 3 to form mirror image distribution. The framework 3 is provided with a long hole communicated with the through cavity of the framework 3.
The seal member includes a seal ring 4, a first seal plate 5 and a second seal plate 6 which are provided at both ends of the housing 1 and are annular.
The seal ring 4 is provided between the first seal plate 5 and the second seal plate 6 and is abutted against inner rings of the first seal plate 5 and the second seal plate 6, respectively. In the present invention, a multiple of 3 armature units are provided, in this embodiment, 12 armature units are provided, and each armature unit is disposed at equal intervals along the circumferential direction of the seal ring 4 and is located between the first seal plate 5, the second seal plate 6 and the seal ring 4. The integral outer ring and the integral inner ring formed by arranging the armature units in this way are all round. The first sealing plate 5 and the second sealing plate 6 are arranged in parallel, and the sealing ring 4 is arranged perpendicular to the first sealing plate 5 and the second sealing plate 6.
The heat radiation system is provided on the housing 1, which can radiate heat of the armature unit. The heat dissipation system comprises an air inlet mechanism and a cooling channel 7, wherein the air inlet mechanism can convey cold air to the cooling channel 7, the cooling channel 7 surrounds each armature unit, a heat conduction mechanism is arranged between the cooling channel 7 and each armature unit, and an air outlet communicated with the cooling channel 7 is further arranged on the shell 1.
The cooling channel 7 is formed in the housing 1 in the shape of an annular groove, which is arranged coaxially with the ring formed by the armature units. The casing 1 is annular, in order to form the cooling channel 7, add the bottom plate 8 and coaxial annular plate 9 of the casing 1 in the casing 1 again, the width (the height is the case when placing the stator horizontally) of annular plate 9 is smaller than the casing 1, the cooling channel 7 is enclosed by bottom plate 8, casing 1 and annular plate 9, the invention also includes the cooling channel seal plate 10, the cooling channel seal plate 10 is set up on casing 1 and annular plate 9 and opposite and parallel to bottom plate 8. The bottom plate 8, the housing 1 and the annular plate 9 are integrally provided.
The heat transfer between the armature unit and the cooling channel 7 can be realized through the heat conduction mechanism, and the heat of the armature unit can be brought out to the outside through cold air of the cooling channel 7. The heat conduction mechanism comprises a plurality of heat conduction rib plates 11 arranged on the inner wall (close to one side of the armature unit) of the annular plate 9 of the cooling channel 7, the plurality of heat conduction rib plates 11 are circumferentially arranged at equal intervals along the inner wall of the annular plate 9, an embedding space of the armature unit is formed between two adjacent heat conduction rib plates 11, and windings of the armature unit positioned in the embedding space are in contact with the heat conduction rib plates 11 at two sides. The heat-conducting ribs 11 are also integrally provided with the annular plate 9. The heat conducting rib 11 not only plays a role in heat dissipation but also in supporting the armature unit.
The air inlet mechanism comprises a plurality of cooling fans 12 arranged on the shell 1, and the air inlet of each cooling fan 12 is opposite to the cooling channel 7. The shell 1 of the invention is provided with a cooling fan 12, the air inlet (air inlet) of the cooling fan 12 is opposite to the cooling channel 7, and the cooling channel 7 is provided with an air guide structure at the air inlet of the cooling fan 12 and the air outlet of the cooling channel 7.
The wind guiding structure enables cold wind blown out by the cooling fan 12 to flow in the semi-rings separated by the two wind guiding structures and flow to the outside. The cross section of the air guide structure is in a shape of a Chinese character 'V', and is formed by connecting two arc-shaped faces. The top end (butt joint end) of the air guiding structure extends to the air outlet of the cooling fan 12 and the air outlet of the cooling channel 7 respectively.
The arrangement of the two air guide structures enables cold air blown out by the cooling fan 12 to be divided into two paths to circulate in the cooling channel 7, so that the flow path of the cold air is reduced, and the winding cooling of the armature unit is better realized under the condition that the energy consumption of the cold air blown by the cooling fan 12 is the same. The two sides of the cooling channel 7 are correspondingly provided with a plurality of turbulent structures. The turbulence structure comprises a number of turbulence blocks 13 arranged on the inner wall of the housing 1 or the ring plate 9 within the cooling channel 7. The turbulence blocks 13 are equally spaced on the inner wall of the housing 1 or the annular plate 9. The turbulence blocks 13 on the inner walls of the shell 1 and the annular plate 9 are staggered.
The side of the cooling channel sealing plate 10 remote from the cooling channel 7 forms a sealing chamber 27 with the housing 1. An injection hole 28 is provided in the plate surface of the second sealing plate 6, the injection hole 28 communicates with the sealing chamber 27, and resin is injected into the sealing chamber 27 through the injection hole 28, and after the resin is cured, all the components are integrated.
The terminal structure is arranged on the shell 1 and used for connecting the phase lines inside and outside the shell 1, and comprises a terminal seat 14, a plurality of metal terminals 15 and fastening bolts 16, wherein the terminal seat 14 is fixedly arranged on the shell 1, and the outer surface of the part of the shell 1 where the terminal structure is arranged is horizontally arranged.
The plurality of metal terminals 15 are arranged on the terminal seat 14 at intervals, the bottom end (the end close to the armature unit) of each metal terminal 15 passes through the terminal seat 14 and the shell 1 and is positioned in the inner cavity of the shell 1, the bottom end of each metal terminal 15 is provided with a blind hole 17, the top end (the end opposite to the bottom end) is provided with a threaded hole 18, and the fastening bolt 16 can be in threaded connection with the threaded hole 18 of the corresponding metal terminal 15. The metal terminals 15 are provided with three (three-phase motor).
Each internal phase line of the stator is electrically connected with the bottom end of the corresponding metal terminal 15 (inserted into a blind hole 17 at the bottom end of the metal terminal 15), initially each fastening bolt 16 is separated from the corresponding metal terminal 15, after the connecting end (with a copper nose 19) of each external phase line is arranged on the top end face of the metal terminal 15, a limiting ring 20 is added, and then the fastening bolts 16 are inserted into threaded holes 18 of the metal terminal 15 and screwed, so that the electrical connection of the external phase line and the internal phase line is realized.
The shell 1 is provided with a slot 21 communicated with the inner cavity of the shell 1, the terminal seat 14 is provided with an inserting block 22 at a corresponding position, and after the inserting block 22 of the terminal seat 14 is inserted into the slot 21, the terminal seat 14 and the shell 1 are fixedly connected through a first fixing piece. The first fixing piece comprises a plurality of screws.
A plurality of through holes 23 matched with the shape of the metal terminals 15 are arranged at the corresponding positions of the terminal seat 14 at intervals, and three through holes 23 are also arranged. Each through hole 23 penetrates the upper end surface (surface close to the stopper ring 20) of the terminal block 14 and the lower end surface of the insert block 22, and the metal terminal 15 is located in the corresponding through hole 23.
The upper end face of the terminal seat 14 is also provided with a plurality of insulating partition boards 24, the insulating partition boards 24 are vertically arranged on the upper end face of the terminal seat 14 at intervals, a mounting station of the metal terminal 15 and an external phase line is formed between two adjacent insulating partition boards 24, and the top end of each metal terminal 15 is positioned at the corresponding mounting station.
The terminal structure further comprises a terminal cover 25, the terminal cover 25 is arranged on the terminal seat 14 in a covering manner, and the terminal cover 25 is fixedly connected with the shell 1 through a second fixing piece. The second fixing piece comprises a plurality of fixing screws, the lower end face of the terminal cover 25 is located on the shell 1, and the terminal cover 25 is fixedly connected with the shell 1 through the plurality of fixing screws. The terminal block 14 and the terminal cover 25 are each made of an insulating material.
The invention also provides a manufacturing process of the stator of the segmented armature motor, which comprises the following steps:
a. The shell 1 is formed by an aluminum alloy machine, a cooling channel 7 and a plurality of heat conducting rib plates 11 are arranged on the shell 1, the plurality of heat conducting rib plates 11 are circumferentially arranged at equal intervals along the axis of the cooling channel 7, a cooling channel sealing plate 10 is arranged between the cooling channel 7 and the shell 1, and a sealing cavity 27 is formed between one side, far away from the cooling channel 7, of the cooling channel sealing plate 10 and the shell 1;
b. winding the coil 26 on the framework 3 and then placing the coil between the corresponding heat conducting rib plates 11;
c. Mounting a terminal structure, namely placing a terminal seat 14 on a shell 1 and fixedly connecting the terminal seat with the shell 1, placing each metal terminal 15 in a corresponding through hole of the terminal seat 14, connecting an internal phase line and an external phase line, welding the internal phase line at the bottom end of the metal terminal 15, and fixing the external phase line on the top end of the metal terminal 15 through a corresponding fastening bolt 16, wherein the metal terminal 15 is provided with a threaded hole 18;
d. two symmetrical stator teeth are inserted from two ends of the framework 3, and then a first sealing plate 5, a second sealing plate 6 and a sealing ring 4 are installed;
e. an injection hole 28 is provided in the plate surface of the second sealing plate 6, the injection hole 28 communicates with the sealing chamber 27, and resin is injected into the sealing chamber 27 through the injection hole 28, and after the resin is cured, all the components are integrated.
All the components including the housing 1, each armature unit, the first sealing plate 5, the second sealing plate 6, the sealing ring 4, and the like are in a state of being isolated from the outside, so that the aging, the damage, and the like of the armature unit can be prevented.
It should be understood that in the claims and the description of the present invention, all "including … …" should be interpreted as an open meaning, i.e. as meaning equivalent to "at least … …", and not as a closed meaning, i.e. as meaning not including … … "only.
Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The stator of the segmented armature motor is characterized by comprising a shell (1), a heat dissipation system, a terminal structure, a sealing piece and a plurality of armature units which are arranged in the shell (1) and distributed in a ring shape, wherein a placement space of the armature units is formed between the shell (1) and the sealing piece, the heat dissipation system is arranged on the shell (1) and can dissipate heat of the armature units, the heat dissipation system comprises an air inlet mechanism and a cooling channel (7), the air inlet mechanism can convey cold air to the cooling channel (7), the cooling channel (7) surrounds each armature unit, and a heat conduction mechanism is arranged between the cooling channel (7) and the armature units; the cooling channel (7) is arranged on the shell (1) and is in an annular groove shape, and the cooling channel and the ring formed by each armature unit are coaxially arranged; A bottom plate (8) and a ring plate (9) coaxial with the shell (1) are additionally arranged in the shell (1); the cooling channel (7) is surrounded by a bottom plate (8), a shell (1) and a ring plate (9); a cooling passage sealing plate (10) is arranged on the shell (1) and the annular plate (9); an air outlet communicated with the cooling channel (7) is also arranged on the shell (1); the armature unit comprises an iron core (2), a framework (3) and coils (26), wherein the iron core (2) is inserted into a through cavity of the framework (3), the coils (26) are wound on the framework (3) corresponding to the iron core (2) to form windings, the iron core (2) is made of SMC materials, the iron core (2) comprises two identical stator teeth, and one ends of the two stator teeth are respectively inserted from the end heads of the corresponding frameworks (3) to form mirror image distribution; the sealing element comprises a sealing ring (4), a first sealing plate (5) and a second sealing plate (6) which are arranged at two ends of the shell (1) and are annular, and the sealing ring (4) is arranged between the first sealing plate (5) and the second sealing plate (6) and is respectively in butt joint with inner rings of the first sealing plate (5) and the second sealing plate (6); the heat conduction mechanism comprises a plurality of heat conduction rib plates (11) arranged on the shell (1) at the cooling channel (7), the plurality of heat conduction rib plates (11) are circumferentially arranged at equal intervals along the cooling channel (7), an embedding space of an armature unit is formed between two adjacent heat conduction rib plates (11), and windings of the armature unit positioned in the embedding space are in contact with the heat conduction rib plates (11); The air inlet mechanism comprises a plurality of cooling fans (12) arranged on the shell (1), the air inlets of the cooling fans (12) are opposite to the cooling channel (7), the air inlets of the cooling channel (7) positioned on the cooling fans (12) and the air outlets of the cooling channel (7) are both provided with an air guide structure, so that cold air blown by the cooling fans (12) can flow in semi-rings separated by the two air guide structures and flow to the outside, and a plurality of turbulent flow structures are correspondingly arranged at two sides of the cooling channel (7); the terminal structure comprises a terminal seat (14), a plurality of metal terminals (15) and fastening bolts (16), wherein the terminal seat (14) is fixedly arranged on the shell (1), the metal terminals (15) are arranged on the terminal seat (14) at intervals, the bottom ends of the metal terminals (15) penetrate through the terminal seat (14) and the shell (1) and are positioned in the inner cavity of the shell (1), blind holes (17) are formed in the bottom ends of the metal terminals (15), threaded holes (18) are formed in the top ends of the metal terminals, and the fastening bolts (16) can be in threaded connection with the threaded holes (18) corresponding to the metal terminals (15); The bottom plate (8), the shell (1), the annular plate (9) and the heat conducting rib plates (11) are integrally arranged.
2. The stator of the segmented armature motor according to claim 1, wherein a plurality of through holes (23) which are matched with the shape of the metal terminals (15) are arranged at corresponding positions of the terminal base (14) at intervals, each through hole (23) penetrates through the upper end face of the terminal base (14) and the lower end face of the insert block (22), and the metal terminals (15) are positioned in the corresponding through holes (23).
3. The stator of the segmented armature motor according to claim 1, wherein the upper end face of the terminal block (14) is further provided with a plurality of insulating spacers (24), the plurality of insulating spacers (24) are vertically arranged on the upper end face of the terminal block (14) at intervals, mounting stations for the metal terminals (15) and the external phase lines are formed between two adjacent insulating spacers (24), and the top ends of the metal terminals (15) are located at the corresponding mounting stations.
4. A process for manufacturing a segmented armature motor stator, for manufacturing a segmented armature motor stator according to any one of claims 1-3, characterized in that it comprises the steps of:
a. The shell (1) is formed by machining an aluminum alloy, a cooling channel (7) and a plurality of heat conducting rib plates (11) are arranged on the shell (1), the plurality of heat conducting rib plates (11) are circumferentially arranged at equal intervals along the axis of the cooling channel (7), and a sealing chamber (27) is formed between one side, far away from the cooling channel (7), of a cooling channel sealing plate (10) and the shell (1);
b. Winding a coil (26) on the framework (3) and then placing the coil between the corresponding heat conducting rib plates (11);
c. the terminal structure is installed, a terminal seat (14) is placed on a shell (1) and is fixedly connected with the shell (1), each metal terminal (15) is installed on the terminal seat (14) and is connected with an internal phase line and an external phase line, the internal phase line is welded at the bottom end of the metal terminal (15), the metal terminal (15) is provided with a threaded hole (18), and the external phase line is fixed on the top end of the metal terminal (15) through a corresponding fastening bolt (16);
d. Two symmetrical stator teeth are inserted from two ends of the framework (3), and then a first sealing plate (5), a second sealing plate (6) and a sealing ring (4) are installed;
e. An injection hole (28) is formed in the plate surface of the second sealing plate (6), the injection hole (28) is communicated with the sealing chamber (27), resin is injected into the sealing chamber (27) through the injection hole (28), and all the components form a whole after the resin is solidified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810736947.7A CN108808896B (en) | 2018-07-06 | 2018-07-06 | Segmented armature motor stator and manufacturing process thereof |
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| CN201810736947.7A CN108808896B (en) | 2018-07-06 | 2018-07-06 | Segmented armature motor stator and manufacturing process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109167464B (en) * | 2018-11-16 | 2021-04-06 | 浙江盘毂动力科技有限公司 | Stator module and axial magnetic field motor |
| DE102019205751A1 (en) * | 2019-04-23 | 2020-10-29 | Zf Friedrichshafen Ag | Electrical machine with a plastic body |
| CN112491197B (en) * | 2020-11-20 | 2022-04-08 | 安徽大学 | Oil-cooled axial flux motor with built-in axial flow fan |
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| US20070200437A1 (en) * | 2006-02-27 | 2007-08-30 | El-Antably Ahmed M | Stator assembly and manufacturing method |
| EP2899857B1 (en) * | 2012-09-21 | 2017-06-28 | Nissan Motor Co., Ltd | Cooling structure for electric motor |
| JP6394451B2 (en) * | 2015-03-20 | 2018-09-26 | スズキ株式会社 | Axial gap type rotating electrical machine |
| CN105553126A (en) * | 2016-01-13 | 2016-05-04 | 西安交通大学 | Stator cooling structure of built-in disc type motor |
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| CN206686014U (en) * | 2017-03-31 | 2017-11-28 | 比亚迪股份有限公司 | A kind of connecting terminal of motor and motor |
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| CN104242549A (en) * | 2013-06-17 | 2014-12-24 | 霍尼韦尔国际公司 | Air cooling of a motor using radially mounted fan |
| CN108233557A (en) * | 2016-12-15 | 2018-06-29 | 姚常勤 | A kind of motor stator module and the Stator and electrical machine with the module |
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| CN208508627U (en) * | 2018-07-06 | 2019-02-15 | 金华市壹维科技有限公司 | Segmented armature motor stator |
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