CN114142632B - Large-torque low-temperature-rise brushless motor - Google Patents
Large-torque low-temperature-rise brushless motor Download PDFInfo
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- CN114142632B CN114142632B CN202111485470.8A CN202111485470A CN114142632B CN 114142632 B CN114142632 B CN 114142632B CN 202111485470 A CN202111485470 A CN 202111485470A CN 114142632 B CN114142632 B CN 114142632B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- 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
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The high-torque low-temperature-rise brushless motor comprises a stator, wherein a surface-mounted rotor is arranged on the inner wall of the stator, the stator comprises a stator core, a stator winding is arranged on the inner wall of the stator core, the rotor comprises a rotor core, eccentric magnetic steel matched with the stator is arranged on the outer wall of the rotor core, and a cover plate is clamped on the outer wall of the stator; by adopting finite element simulation analysis and reasonable design, the motor has the advantages of large torque, strong overload capacity, low temperature rise, high production efficiency, low cost and the like, and through test verification of the motor, the highest temperature of the motor in the rated working state is not more than 50 ℃ (the temperature rises by 30 ℃), and the maximum torque reaches more than 4 times of the rated torque.
Description
Technical Field
The invention belongs to the technical field of brushless motors, and particularly relates to a high-torque low-temperature-rise brushless motor.
Background
Brushless motors are increasingly used in modern life, and are widely used in aerospace systems, national defense and military equipment, scientific instruments, industrial automation equipment, transportation, medical instruments, computer information peripheral equipment, office automation equipment and household consumer products. Numerous applications and development, production, control, and application personnel are engaged in developing brushless dc motors in China, and many universities and technological research institutes are developing research around the hot spot of brushless motors and control.
At present, a frameless brushless torque motor applied to a cooperative robot requires a small motor volume due to weight limitation, the torque is large, the maximum torque of a common brushless torque motor is only 2-3 times of the rated torque, and the temperature rise reaches 80 ℃ in the rated working state, so that the joint overload capacity of the robot is insufficient, and the heating is serious. Therefore, a brushless torque motor with large torque and low temperature rise needs to be developed to meet the market demands of robots with large torque and low temperature rise.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a high-torque low-temperature-rise brushless motor, which comprises the following specific technical scheme:
the utility model provides a big moment of torsion low temperature rise brushless motor, includes the stator, the inner wall of stator is provided with the table and pastes formula rotor, the stator includes stator core, stator core inner wall is provided with stator winding, the rotor includes rotor core, rotor core outer wall is provided with the eccentric magnet steel with stator matched with, the outer wall block of stator has the apron.
Further, the outside cover of apron has the heat conduction ring, the heat conduction ring with connect through annular equidistance distributed's strengthening rib between the apron, the heat conduction ring outer wall is provided with detachable heat-conducting plate.
Further, a plurality of mounting holes are transversely formed in the longitudinal surface of the heat conducting plate, and the mounting holes are close to the end portions of the longitudinal surface of the heat conducting plate.
Further, the heat conducting plate is connected with the heat conducting ring through a connecting part, the heat conducting ring is connected with the heat conducting plate through a rotating connecting part, and the transverse surface of the heat conducting plate is attached to the heat conducting ring.
Further, connecting piece includes recess one, L template, rotates piece, opening and spring one, open the bottom of heat-conducting plate has recess one, the inside symmetry of recess one is provided with L template, L template with be connected with spring one between the recess inner wall, promote L template and rotate the piece contact, L template bottom is located recess one outside, open the inner wall of heat-conducting ring has the opening, the opening with strengthening rib dislocation set, L template bottom runs through the opening and can to heat-conducting ring inside removal.
Further, the rotating piece comprises a screw, a rotating block and an elliptic block, the screw is connected to the top thread of the first groove, the top end of the screw is located on the outer side of the first groove and fixedly connected with the rotating block, the bottom end of the screw is fixedly connected with the elliptic block, the elliptic block is located between two L-shaped plates and is in contact with the L-shaped plates, and the rotating block is spaced from the transverse surface of the L-shaped plates.
Further, connecting piece still includes fixed block, bracing piece and elastic component, heat conduction board bottom just is located recess a both sides fixedly connected with fixed block, fixedly provided with bracing piece between the fixed block, the bracing piece is located recess below, the bracing piece runs through L template and spacing L template.
Further, the elastic component includes recess two, through-hole, lug, stopper, spacing and spring two, open at the bottom surface tip of L template has recess two, open at the top of recess two has communicating through-hole, the radial length of through-hole is less than the inside interval of recess two, the inside of through-hole is provided with the lug, lug top cambered surface sets up, the bottom outside fixedly connected with spacing of recess two, spacing lug tip, the outer wall fixedly connected with stopper of lug, the stopper can get into in the recess two, just the stopper with be connected with spring two between the spacing.
Furthermore, connecting holes are formed in the surfaces of the heat conducting rings at two sides of the opening, and the connecting holes are matched with the protruding blocks.
Further, the connecting component comprises a connecting bolt, and the heat conducting plate is fixedly connected with the heat conducting ring through the connecting bolt.
The beneficial effects of the invention are as follows:
1. by adopting finite element simulation analysis and reasonable design, the motor has the advantages of large torque, strong overload capacity, low temperature rise, high production efficiency, low cost and the like, and through test verification of the motor, the highest temperature of the motor in the rated working state is not more than 50 ℃ (the temperature rises by 30 ℃), and the maximum torque is more than 4 times of the rated torque;
2. the heat conducting ring is matched with the heat conducting plate, so that the heat radiating efficiency of the motor can be improved, the heat conducting plate and the heat conducting ring are detachably connected, the heat conducting plate can be installed in the use space or in the use space, the heat conducting plate can be detached when the heat conducting plate is not required to be used or used unconditionally, and the annular distribution of the heat conducting plate enables the heat conducting plates to have a distance, so that heat radiation is also facilitated.
Drawings
FIG. 1 shows a schematic diagram of a high torque low temperature rise brushless motor of the present invention;
FIG. 2 shows a schematic structural diagram of a heat conducting plate and a heat conducting ring of the invention;
FIG. 3 shows a schematic structural view of the mounting hole of the present invention;
FIG. 4 shows a schematic structural view of the connecting ring of the present invention;
FIG. 5 shows a schematic structural view of the rotating member of the present invention;
FIG. 6 shows an enlarged view at A in FIG. 3;
fig. 7 shows a schematic structural view of the connecting bolt of the present invention;
FIG. 8 shows a schematic structural view of a connecting bolt and a heat conducting plate of the present invention;
the figure shows: 1. a stator; 11. a stator core; 12. a stator winding; 2. a rotor; 21. a rotor core; 22. eccentric magnetic steel; 3. a cover plate; 4. a heat conducting ring; 5. reinforcing ribs; 6. a heat conductive plate; 7. a mounting hole; 8. a connecting member; 81. a groove I; 82. an L-shaped plate; 83. a rotating member; 831. a screw; 832. a rotating block; 833. an elliptic block; 84. an opening; 85. a first spring; 86. a fixed block; 87. a support rod; 88. an elastic member; 881. a second groove; 882. a through hole; 883. a bump; 884. a limiting block; 885. a limiting frame; 886. a second spring; 887. a connection hole; 80. and (5) connecting bolts.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a high-torque low-temperature-rise brushless motor comprises a stator 1, wherein a surface-mounted rotor is arranged on the inner wall of the stator 1, the stator 1 comprises a stator core 11, a stator winding 12 is arranged on the inner wall of the stator core 11, the rotor 2 comprises a rotor core 21, eccentric magnetic steel 22 matched with the stator 1 is arranged on the outer wall of the rotor core 21, and a cover plate 3 is clamped on the outer wall of the stator 1.
The proper electromagnetic method can be determined through finite element simulation analysis, the reasonable slot pole matching is adopted to improve the torque, the vibration noise is reduced, the silicon steel sheet of the stator core 11 is adopted to reduce the loss and the temperature rise of the silicon steel sheet with thinner thickness, the surface-mounted rotor is adopted to improve the torque, the eccentric magnetic steel 22 is adopted to reduce the torque fluctuation, the stator winding 12 is adopted to reduce the manufacturing cost of the stator 1, the copper wire is selected to reduce the temperature rise through reasonable wire diameter and turns, and the ratio of the wire diameter cross section area (mm 2) to the power (kW) of the copper wire is 1.7-2.
As shown in fig. 2, the heat conducting ring 4 is sleeved outside the cover plate 3, the heat conducting ring 4 is connected with the cover plate 3 through annular equally distributed reinforcing ribs 5, and a detachable heat conducting plate 6 is arranged on the outer wall of the heat conducting ring 4.
The diameter of heat conduction ring 4 is greater than the diameter of apron 3, therefore heat conduction ring 4 can be located the surface of apron 3, strengthening rib 5 also can adopt the heat conduction material, the apron 3 is connected to strengthening rib 5 and heat conduction ring 4, can make keep the interval between heat conduction ring 4 and the apron 3, thereby make have the space between heat conduction ring 4 and the apron 3, the convenience dispels the heat, the longitudinal section of heat conduction plate 6 is similar to L type, can be according to the detachable connection between heat conduction plate 6 and the heat conduction ring 4, whether install heat conduction plate 6 of real space decision.
As shown in fig. 3, the longitudinal surface of the heat conducting plate 6 is transversely provided with a plurality of mounting holes 7, and the mounting holes 7 are close to the end of the longitudinal surface of the heat conducting plate 6.
The quantity of mounting hole 7 is two at least, is located the vertical surface tip of heat-conducting plate 6, and the setting of mounting hole 7 not only reduces the weight of heat-conducting plate 6, also is convenient for the air to pass when having the circulation of air simultaneously to dispel the heat, and mounting hole 7 also can make the bolt pass simultaneously, when needs are installed motor itself, can pass mounting hole 7 through the bolt, also can install the base on heat-conducting plate 6 to make the motor can place, satisfy the multiple demand of installation.
As shown in fig. 2, the heat conducting plate 6 and the heat conducting ring 4 are connected through a connecting component 8, the heat conducting ring 4 and the heat conducting plate 6 are connected through the rotating connecting component 8, and the transverse surface of the heat conducting plate 6 is attached to the heat conducting ring 4.
The detachable connection of heat conduction board 6 and heat conduction ring 4 is realized to adapting unit 8, when needs heat conduction board 6, can install heat conduction board 6 in the surface of heat conduction ring 4, when not needing, can not install, reduce the space occupation, consequently can install heat conduction board 6 according to actual demand, when heat conduction board 6 installs in the surface of heat conduction ring 4, the laminating of the horizontal surface bottom of heat conduction board 6 is in heat conduction ring 4, therefore the heat on heat conduction ring 4 surface can be conducted to on the heat conduction board 6, further improve the radiating effect.
As shown in fig. 3 and fig. 4, the connecting component 8 includes a groove one 81, an L-shaped plate 82, a rotating member 83, an opening 84 and a first spring 85, the bottom of the heat conducting plate 6 is provided with the groove one 81, the inner portion of the groove one 81 is symmetrically provided with the L-shaped plate 82, the L-shaped plate 82 and the inner wall of the groove one 81 are connected with the first spring 85, the L-shaped plate 82 is pushed to be contacted with the rotating member 83, the bottom end of the L-shaped plate 82 is located outside the groove one 81, the inner wall of the heat conducting ring 4 is provided with the opening 84, the opening 84 and the reinforcing ribs 5 are arranged in a staggered manner, and the bottom end of the L-shaped plate 82 penetrates through the opening 84 and can move towards the inner portion of the heat conducting ring 4.
The first groove 81 is positioned at the bottom of the transverse surface of the heat conducting plate 6, the first groove 81 is smaller than the first L-shaped plate 82 in height, therefore, the top end of the first L-shaped plate 82 is in contact with the top of the first groove 81, the bottom end of the first L-shaped plate 82 is positioned at the outer side of the first groove 81, the rotating piece 83 is in threaded connection with the heat conducting plate 6, a screw hole in threaded connection with the rotating piece 83 is formed in the middle of the first groove 81, the distance between the two L-shaped plates 82 can be changed through rotation of the rotating piece 83, after the L-shaped plate 82 passes through the opening 84, the distance between the L-shaped plates 82 is increased, the end portions of the L-shaped plates 82 can be made to move transversely and linearly inside the heat conducting plate 6, and when the distance between the two ends of the L-shaped plate 82 is larger than the opening 84, the heat conducting plate 6 is not easy to separate from the opening 84, and connection between the heat conducting plate 6 and the heat conducting ring 4 is achieved.
In the initial state, the distance between the two L-shaped plates 82 is small, the distance between the L-shaped plates 82 is smaller than the width of the opening 84, so that the L-shaped plates 82 can pass through the opening 84, and the first spring 85 pushes the L-shaped plates 82 to move toward the middle, so that the L-shaped plates 82 can always contact with the rotating member 83.
As shown in fig. 5, the rotating member 83 includes a screw 831, a rotating block 832 and an elliptical block 833, the top thread of the first groove 81 is connected with the screw 831, the top end of the screw 831 is located outside the first groove 81 and is fixedly connected with the rotating block 832, the bottom end of the screw 831 is fixedly connected with the elliptical block 833, the elliptical block 833 is located between two L-shaped plates 82 and is in contact with the L-shaped plates 82, and the rotating block 832 is spaced from the lateral surface of the L-shaped plates 82.
Screw 831 and the screw threaded connection at recess one 81 top, screw 831 top and rotatory piece 832 fixed connection can drive screw 831 rotary motion through rotatory piece 832, rotatory piece 832 is located the outside of recess one 81 and is located its top, oval piece 833 is located the inside of recess one 81, under the initial condition, L template 82 and the contact of oval piece 833 interval side wall weak point, when L template 82 and the contact of oval piece 833 interval big side wall, oval piece 833 can increase the interval of two L templates 82, and when L template 82 interval increases, oval piece 833 rotates down and removes, rotatory piece 832 and L template 82 interval shrink this moment.
As shown in fig. 3, the connecting component 8 further includes a fixing block 86, a supporting rod 87 and an elastic member 88, the bottom end of the heat conducting plate 6 is located at two sides of the first groove 81, the fixing blocks 86 are fixedly connected with each other, the supporting rod 87 is fixedly arranged between the fixing blocks 86, the supporting rod 87 is located below the first groove 81, and the supporting rod 87 penetrates through the L-shaped plate 82 and limits the L-shaped plate 82.
The bottom of L-shaped plate 82 and the height of fixed block 86 are unanimous with heat conduction plate 6 bottom interval, therefore fixed block 86 is fixed in heat conduction plate 6 bottom, and fixed block 86 bottom and L-shaped plate 82 contact, elastic component 88 is located L-shaped plate 82, and lean on fixed block 86 department, therefore elastic component 88 receives fixed block 86's the stop and is located L-shaped plate 82 always under the initial condition, bracing piece 87 is fixed between two fixed blocks 86, L-shaped plate 82 surface is opened has the hole that can make bracing piece 87 pass, not only can support L-shaped plate 82, also spacing to L-shaped plate 82 simultaneously, make L-shaped plate 82 keep the linear movement of horizontal direction, and the height of fixed block 86 is unanimous with the thickness of heat conduction ring 4, therefore when L-shaped plate 82 removes, elastic component 88 can remove heat conduction ring 4 inner wall and with it from fixed block 86.
As shown in fig. 6, the elastic member 88 includes a second recess 881, a through hole 882, a protruding block 883, a limiting block 884, a limiting frame 885 and a second spring 886, the bottom end of the L-shaped plate 82 is provided with the second recess 881, the top of the second recess 881 is provided with a communicating through hole 882, the radial length of the through hole 882 is smaller than the internal space of the second recess 881, the inside of the through hole 882 is provided with a protruding block 883, the top cambered surface of the protruding block 883 is provided, the bottom outside of the second recess 881 is fixedly connected with a limiting frame 885, the end of the limiting block 883 is fixedly connected with a limiting block 884, the limiting block 884 can enter the second recess 881, and a second spring 886 is connected between the limiting block 884 and the limiting frame 885.
The second groove 881 is located the bottom end of the L-shaped plate 82, the through hole 882 is communicated with the second groove 881, the cross section of the limiting frame 885 is similar to the U-shaped, one end of the lug 883 is located the through hole 882, the other end of the lug penetrates through the second groove 881 and is located the limiting frame 885, the limiting block 884 is fixed on the outer surface of the lug 883, the second spring 886 can push the limiting block 884, so that the end of the lug 883 moves towards the outer side of the through hole 882, but the lug 883 is located the through hole 882 in an initial state, and the cambered surface of the end of the lug 883 located in the through hole 882 is convenient to contact with the heat conducting plate 6, so that friction between the lug 883 and the heat conducting plate 6 is reduced.
As shown in fig. 4, connecting holes 887 are formed on the surfaces of the heat conducting ring 4 at two sides of the opening 84, and the connecting holes 887 are matched with the protruding blocks 883.
The diameter of connecting hole 887 matches with the diameter of lug 883, when L template 82 moves to heat conduction ring 4 inside, when elastic component 88 breaks away from fixed block 86, elastic component 88 moves to heat conduction ring 4 inner wall, and receive the separation of heat conduction ring 4 inner wall, lug 883 is located through-hole 882 always, when L template 82 tip moved to connecting hole 887 department, the tip of lug 883 can pass connecting hole 887 to it is spacing to L template 82, and L template 82 can't the linear movement this moment, reaches to strengthen the connection steadiness between heat conduction plate 6 and the heat conduction ring 4.
As shown in fig. 7 and 8, the connection member 8 includes a connection bolt 80, and the heat conductive plate 6 and the heat conductive ring 4 are fixedly connected by the connection bolt 80.
The heat conducting plate 6 is provided with screw holes matched with the connecting bolts 80, the bolts can penetrate through the openings 84, and the connecting bolts 80 can fixedly connect the heat conducting plate 6 with the heat conducting ring 4, so that detachable connection is realized.
Working principle: the heat conducting ring 4 is added on the outer wall of the cover plate 3, heat radiating efficiency is improved, when the heat conducting plate 6 needs to be installed, multiple modes are provided, one connecting component 8 is directly connected through the connecting bolt 80, the structure is simple, but installation operation is more troublesome, and the possibility of loosening can be achieved when the connecting component 8 is used for a long time, the limiting block 884 is enabled to rotate the rotating block 832, the elliptical block 833 moves downwards, the L-shaped plate 82 is in contact with the side wall with large distance between the elliptical blocks 833, the first spring 85 is in a compressed state, the bottom end of the L-shaped plate 82 moves outwards and moves to the connecting hole 887, the protruding block 883 can move outwards and can penetrate through the connecting hole 887, the limiting block 884 is limited, the protruding block 883 can not continue to move towards the connecting hole 887 when the limiting block 884 enters the groove II 881, the connection of the heat conducting plate 6 and the heat conducting ring 4 is completed through double-layer limitation of the L-shaped plate 82 and the protruding block 883.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. A big moment of torsion low temperature rise brushless motor, its characterized in that: the stator comprises a stator (1), wherein a surface-mounted rotor (2) is arranged on the inner wall of the stator (1), the stator (1) comprises a stator core (11), a stator winding (12) is arranged on the inner wall of the stator core (11), the rotor (2) comprises a rotor core (21), eccentric magnetic steel (22) matched with the stator (1) is arranged on the outer wall of the rotor core (21), and a cover plate (3) is clamped on the outer wall of the stator (1);
the outer part of the cover plate (3) is sleeved with a heat conducting ring (4), the heat conducting ring (4) is connected with the cover plate (3) through annular equally distributed reinforcing ribs (5), and a detachable heat conducting plate (6) is arranged on the outer wall of the heat conducting ring (4);
a plurality of mounting holes (7) are transversely formed in the longitudinal surface of the heat conducting plate (6), and the mounting holes (7) are close to the end parts of the longitudinal surface of the heat conducting plate (6);
the heat conducting plate (6) is connected with the heat conducting ring (4) through a connecting component (8), the heat conducting ring (4) is connected with the heat conducting plate (6) through the rotating connecting component (8), and the transverse surface of the heat conducting plate (6) is attached to the heat conducting ring (4);
the connecting component (8) comprises a first groove (81), an L-shaped plate (82), a rotating piece (83), an opening (84) and a first spring (85), the first groove (81) is formed in the bottom of the heat conducting plate (6), the first groove (81) is internally symmetrically provided with the first L-shaped plate (82), the first spring (85) is connected between the first L-shaped plate (82) and the inner wall of the first groove (81), the first L-shaped plate (82) is pushed to be contacted with the rotating piece (83), the bottom end of the L-shaped plate (82) is positioned on the outer side of the first groove (81), the inner wall of the heat conducting ring (4) is provided with the opening (84), the opening (84) and the reinforcing rib (5) are arranged in a staggered mode, and the bottom end of the L-shaped plate (82) penetrates through the opening (84) and can move towards the inner part of the heat conducting ring (4).
The rotating piece (83) comprises a screw rod (831), a rotating block (832) and an elliptic block (833), the screw rod (831) is connected to the top of the first groove (81) in a threaded manner, the top end of the screw rod (831) is positioned at the outer side of the first groove (81) and is fixedly connected with the rotating block (832), the bottom end of the screw rod (831) is fixedly connected with the elliptic block (833), the elliptic block (833) is positioned between two L-shaped plates (82) and is in contact with the L-shaped plates (82), and the rotating block (832) and the transverse surface of the L-shaped plates (82) have a distance;
the connecting component (8) further comprises fixing blocks (86), supporting rods (87) and elastic pieces (88), the bottom ends of the heat conducting plates (6) are fixedly connected with the fixing blocks (86) on two sides of the first groove (81), the supporting rods (87) are fixedly arranged between the fixing blocks (86), the supporting rods (87) are located below the first groove (81), and the supporting rods (87) penetrate through the L-shaped plates (82) and limit the L-shaped plates (82);
the elastic piece (88) comprises a groove II (881), a through hole (882), a lug (883), a limiting block (884), a limiting frame (885) and a spring II (886), wherein the groove II (881) is arranged at the bottom end part of the L-shaped plate (82), the communicating through hole (882) is arranged at the top of the groove II (881), the radial length of the through hole (882) is smaller than the internal distance of the groove II (881), the lug (883) is arranged in the through hole (882), the cambered surface at the top end of the lug (883) is arranged, the limiting frame (885) is fixedly connected with the outer side of the bottom of the groove II (881), the limiting block (884) is fixedly connected with the limiting block (884), and the limiting block (884) can enter the groove II (881), and the spring II (886) is connected between the limiting block (884).
2. A high torque, low temperature rise brushless motor as claimed in claim 1, wherein: connecting holes (887) are formed in the surfaces of the heat conducting rings (4) at two sides of the opening (84), and the connecting holes (887) are matched with the protruding blocks (883).
3. A high torque, low temperature rise brushless motor as claimed in claim 1, wherein: the connecting part (8) comprises a connecting bolt (80), and the heat conducting plate (6) and the heat conducting ring (4) are fixedly connected through the connecting bolt (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111485470.8A CN114142632B (en) | 2021-12-07 | 2021-12-07 | Large-torque low-temperature-rise brushless motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111485470.8A CN114142632B (en) | 2021-12-07 | 2021-12-07 | Large-torque low-temperature-rise brushless motor |
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| Publication Number | Publication Date |
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| CN114142632A CN114142632A (en) | 2022-03-04 |
| CN114142632B true CN114142632B (en) | 2023-09-22 |
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| CN201601588U (en) * | 2009-12-23 | 2010-10-06 | 昆山永恒盛工业技术有限公司 | Permanent-magnet synchronous motor with low rotating speed and large torque |
| CN109768637A (en) * | 2018-12-15 | 2019-05-17 | 宁德时代电机科技有限公司 | The low-temperature-rise permanent magnet drive motor of external rectangular heat dissipation water pipe and casing note heat-conducting glue |
| CN111490617A (en) * | 2020-05-31 | 2020-08-04 | 嘉兴学院 | Outer rotor structure of permanent magnet direct-drive wind driven generator |
| CN212969229U (en) * | 2020-09-11 | 2021-04-13 | 无锡新豆科技有限公司 | Stator winding structure of permanent magnet synchronous motor |
| CN112117858A (en) * | 2020-09-25 | 2020-12-22 | 卧龙电气(上海)中央研究院有限公司 | Motor with cooling structure |
| CN214255905U (en) * | 2021-03-03 | 2021-09-21 | 江苏琥珀汽车科技有限公司 | Natural air cooling heat dissipation type permanent magnet synchronous motor |
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| CN114142632A (en) | 2022-03-04 |
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