CN116885890A - Efficient durable brushless motor and working method thereof - Google Patents
Efficient durable brushless motor and working method thereof Download PDFInfo
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- CN116885890A CN116885890A CN202311151179.6A CN202311151179A CN116885890A CN 116885890 A CN116885890 A CN 116885890A CN 202311151179 A CN202311151179 A CN 202311151179A CN 116885890 A CN116885890 A CN 116885890A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000017525 heat dissipation Effects 0.000 claims abstract description 57
- 238000004804 winding Methods 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 17
- 230000005855 radiation Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 241000883990 Flabellum Species 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
-
- 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
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The application belongs to the technical field of brushless motors, and particularly relates to a high-efficiency durable brushless motor and a working method thereof, wherein the high-efficiency durable brushless motor comprises the following components: the balance component is suitable for blocking the air inlet side of the heat dissipation component; the balancing component is suitable for adjusting the relative position between the balancing component and the rotor component so as to gradually open the air inlet side of the heat dissipation component, the heat dissipation component forms air flow to dissipate heat of the rotor component until the balancing component moves to the corresponding position to enable the rotor component to be in a dynamic balance state, and the balancing component blows air to the stator component; according to the application, through arranging the balance assembly, the overload of the current of the motor during starting can be avoided, on one hand, the service life of the motor is prolonged, on the other hand, the heat productivity of the motor can be reduced, the problem that the torque is overlarge during starting of the traditional brushless motor can be solved, the dynamic balance requirement of the rotor assembly is met, the abrasion of the brushless motor is delayed, the output precision of the brushless motor is improved, the air cooling of the stator assembly and the rotor assembly is realized, and the heat dissipation efficiency is improved.
Description
Technical Field
The application belongs to the technical field of brushless motors, and particularly relates to a high-efficiency durable brushless motor and a working method thereof.
Background
Traditional brushless motor passes through the casing with heat transfer to outside, but this kind of heat dissipation mode radiating efficiency is low, and even there is the design that sets up the flabellum in brushless motor, and when starting, the rotor shaft drives the flabellum and rotates, if the flabellum produces the air current then need overcome air resistance, and then leads to the required moment of torsion of brushless motor when starting to be the stack of rotor shaft and flabellum for brushless motor current overload when starting can shorten brushless motor's life, burns out brushless motor even, also can lead to brushless motor's calorific capacity to increase simultaneously.
Meanwhile, although dynamic balance stability can be considered in the design of the brushless motor, the dynamic balance stability cannot be completely consistent with the design requirement in the actual production process of the brushless motor, so that abrasion of the brushless motor can be accelerated, and the output precision of the brushless motor can be influenced.
Therefore, there is a need to develop a new efficient durable brushless motor and a working method thereof to solve the above problems.
Disclosure of Invention
The application aims to provide a high-efficiency durable brushless motor and a working method thereof.
In order to solve the above technical problems, the present application provides a high-efficiency durable brushless motor, comprising: a stator assembly, a rotor assembly, a heat dissipating assembly, and a balancing assembly; the rotor assembly movably penetrates through the stator assembly, the heat dissipation assembly and the balance assembly are sleeved on the rotor assembly, and the balance assembly is positioned on the air inlet side of the heat dissipation assembly; when the motor is in a stop state, the balance component blocks the air inlet side of the heat dissipation component; after the motor starts, the stator assembly drives the rotor assembly to rotate, the balance assembly adjusts the relative position between the stator assembly and the rotor assembly under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly, and the heat dissipation assembly rotates under the drive of the rotor assembly, so that the air inlet side is used for forming air flow to dissipate heat of the rotor assembly until the balance assembly moves to the corresponding position so that the rotor assembly is in a dynamic balance state, and the balance assembly blows air to the stator assembly under the drive of the rotor assembly.
Further, the stator assembly includes: a stator backbone and stator windings; the stator winding is mounted on a stator frame, and the rotor assembly penetrates through the stator frame.
Further, the rotor assembly includes: a rotor skeleton, rotor windings and a rotor shaft; the rotor framework is positioned in the stator assembly, and the rotor winding is arranged on the rotor framework; the rotor shaft is connected with the rotor framework through the heat dissipation assembly, and the balance assembly is movably connected with the rotor framework and the rotor shaft.
Further, an air duct is arranged between the rotor framework and the rotor shaft.
Further, the heat dissipation assembly includes: a plurality of fan blades; each fan blade is respectively connected with the rotor framework and the rotor shaft.
Further, each fan blade is annularly distributed between the rotor skeleton and the rotor shaft.
Further, the fan blade adopts an axial flow fan blade.
Further, the balancing assembly includes: a plurality of balancing units; the balance unit is movably connected with the rotor shaft, and is movably and limitedly connected with the rotor framework; the rotor shaft and the rotor framework drive the balance units to rotate, the balance units are far away from the rotor shaft under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly until the balance units move to corresponding positions so that the rotor shaft is in a dynamic balance state, and the balance units blow towards the stator assembly.
Further, each balance unit is arranged in a ring.
Further, the balancing unit includes: a balance plate; the balance plate is movably connected with the rotor shaft, and is movably and limitedly connected with the rotor framework; the rotor shaft and the rotor framework drive the balance plate to rotate, the balance plate moves relative to the rotor shaft and the rotor framework under the action of centrifugal force, and when the balance plate is far away from the rotor shaft, the balance plate opens the air inlet side of the heat radiation assembly until the balance plate moves to the corresponding position to enable the rotor shaft to be in a dynamic balance state.
Further, the balance plate is in a fan-shaped arrangement.
Further, a plurality of connecting grooves are formed in the rotor shaft, a plurality of sliding grooves are formed in the rotor framework, protruding portions are arranged at the bottoms of the balance plates, the protruding portions are movably and limitedly clamped with the corresponding sliding grooves and the corresponding connecting grooves, and two sides of the protruding portions are connected with the rotor framework through corresponding elastic pieces respectively.
Further, the cross sections of the sliding groove and the protruding part are T-shaped.
Further, a plurality of through holes are formed in the balance plate, and blades are respectively arranged in the through holes; when the balance plate moves relative to the rotor shaft and the rotor skeleton until each through hole is aligned with the stator assembly, the balance plate rotates under the drive of the rotor shaft and the rotor skeleton so as to form air flow between the through holes and the blades and blow air towards the stator assembly.
In another aspect, the present application provides a method of operating a high efficiency, durable brushless motor as described above, comprising: when the motor is in a stop state, the balance component blocks the air inlet side of the heat dissipation component; after the motor is started, the stator assembly drives the rotor assembly to rotate, the balance assembly adjusts the relative position between the stator assembly and the rotor assembly under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly, the heat dissipation assembly rotates under the drive of the rotor assembly, so that air flow is formed on the air inlet side to dissipate heat of the rotor assembly until the balance assembly moves to the corresponding position so that the rotor assembly is in a dynamic balance state, and the balance assembly blows air to the stator assembly under the drive of the rotor assembly.
The application has the beneficial effects that the balance component is arranged on the air inlet side of the heat dissipation component, the air flow is not generated by the heat dissipation component when the motor is started because the air inlet side is blocked, namely, the air resistance is not needed to be overcome, the current overload of the motor when the motor is started can be avoided, on one hand, the service life of the motor can be prolonged, on the other hand, the heating value of the motor can be reduced, and the balance component gradually opens the air inlet side along with the continuous acceleration of the rotor component, at the moment, the torque of the rotor component when the rotor component rotates is smaller than the torque of the rotor component when the rotor component rotates, the torque of the air flow generated by the heat dissipation component can be reduced, the problem that the torque of the traditional brushless motor is overlarge when the brushless motor is started can be solved, meanwhile, the relative position between the balance component and the rotor component is continuously adjusted under the action of centrifugal force, the abrasion of the brushless motor is delayed, the output precision is improved, the balance component rotates along with the rotor component to form the air flow towards the stator component, the stator component and the rotor component, and the air cooling efficiency is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a high efficiency, durable brushless motor of the present application;
FIG. 2 is a block diagram of a stator assembly of the present application;
FIG. 3 is a block diagram of the balance assembly of the present application assembled to a rotor assembly;
FIG. 4 is a block diagram of a rotor assembly of the present application;
FIG. 5 is a block diagram of a balancing assembly of the present application;
fig. 6 is a structural view of the balancing unit of the present application;
FIG. 7 is a state diagram of the motor of the present application in a shutdown state;
fig. 8 is a state diagram of the motor of the present application after start-up.
In the figure:
1. a stator assembly; 11. a stator skeleton; 12. a stator winding;
2. a rotor assembly; 21. a rotor skeleton; 211. a sliding groove; 22. a rotor shaft; 221. a connecting groove; 23. an air duct;
3. a heat dissipation assembly; 31. a fan blade;
4. a balancing assembly; 41. a balancing unit; 411. a balance plate; 4111. a boss; 4112. an elastic member; 4113. a through hole; 4114. and (3) a blade.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiment 1, in the present embodiment, as shown in fig. 1 to 8, the present embodiment provides a high-efficiency durable brushless motor, comprising: a stator assembly 1, a rotor assembly 2, a heat dissipation assembly 3 and a balancing assembly 4; the rotor assembly 2 movably penetrates through the stator assembly 1, the heat dissipation assembly 3 and the balance assembly 4 are sleeved on the rotor assembly 2, and the balance assembly 4 is positioned on the air inlet side of the heat dissipation assembly 3; when the motor is in a stop state, the balance component 4 blocks the air inlet side of the heat dissipation component 3; after the motor starts, the stator assembly 1 drives the rotor assembly 2 to rotate, the balance assembly 4 adjusts the relative position with the rotor assembly 2 under the action of centrifugal force, so that the air inlet side of the heat dissipation assembly 3 is gradually opened, the heat dissipation assembly 3 rotates under the driving of the rotor assembly 2, so that air flow is formed by the air inlet side to dissipate heat of the rotor assembly 2, until the balance assembly 4 moves to a corresponding position to enable the rotor assembly 2 to be in a dynamic balance state, and the balance assembly 4 blows air to the stator assembly 1 under the driving of the rotor assembly 2.
In this embodiment, this embodiment is through setting up balanced subassembly 4 in the air inlet side of radiator unit 3, because the air inlet side is blocked, radiator unit 3 does not produce the air current when the motor starts, need not to overcome air resistance promptly, can avoid the motor electric current overload when starting, on the one hand delay the life of motor, on the other hand can reduce motor calorific capacity, and as rotor unit 2 constantly accelerates, balanced subassembly 4 gradually opens the air inlet side, because rotor unit 2 moment of torsion when rotating is less than moment of torsion when starting this moment, radiator unit 3 has been rotated along with rotor unit 2, can make radiator unit 3 produce the moment of torsion of air current reduce, can overcome traditional brushless motor moment of torsion too big problem when starting, balanced subassembly 4 constantly adjusts the relative position with rotor unit 2 under centrifugal force simultaneously, satisfy rotor unit 2 dynamic balance demand, delay brushless motor's wearing and tearing and the output precision that improves, and balanced subassembly 4 rotates along with rotor unit 2 and forms the air current towards stator unit 1, rotor unit 2 forced air cooling, the realization is to stator unit 1, rotor unit 2, the radiating efficiency improves.
In this embodiment, the stator assembly 1 includes: a stator frame 11 and a stator winding 12; the stator winding 12 is mounted on the stator frame 11, and the rotor assembly 2 passes through the stator frame 11.
In this embodiment, the stator skeleton 11 plays the effect of installation, and simultaneously the stator winding 12 plays the effect of driving rotor subassembly 2 pivoted, and after the motor starts, stator winding 12 also can produce calorific capacity, and stator winding 12 passes through the casing with the heat transfer outside in traditional brushless motor, but this kind of radiating mode radiating efficiency is low, and in this embodiment, through radiating component 3, balanced subassembly 4 bloies, can take away the heat in stator winding 12, improves radiating efficiency, guarantees the stable work of motor.
In this embodiment, the rotor assembly 2 includes: a rotor armature 21, rotor windings and a rotor shaft 22; the rotor skeleton 21 is positioned in the stator assembly 1, and the rotor winding is arranged on the rotor skeleton 21; the rotor shaft 22 is connected with the rotor framework 21 through the heat dissipation assembly 3, and the balance assembly 4 is movably connected with the rotor framework 21 and the rotor shaft 22.
In this embodiment, the rotor skeleton 21 plays a role in installation, and meanwhile, the rotor winding and the stator winding 12 cooperate to play a role in driving, after the motor is started, the rotor winding also generates heat, and the heat in the rotor winding can be taken away by blowing through the heat dissipation assembly 3 and the balance assembly 4, so that the heat dissipation efficiency is improved, and the stable operation of the motor is ensured.
In this embodiment, an air duct 23 is provided between the rotor frame 21 and the rotor shaft 22.
In this embodiment, the air duct 23 is a gap between the rotor frame 21 and the rotor shaft 22, the heat dissipation assembly 3 is located in the air duct 23, and the balance assembly 4 is located on the air intake side of the heat dissipation assembly 3, i.e. the balance assembly 4 can block the air duct 23 or open the air duct 23.
In this embodiment, the heat dissipation assembly 3 includes: a plurality of fan blades 31; each fan blade 31 is connected to the rotor frame 21 and the rotor shaft 22 respectively.
In this embodiment, after the rotor frame 21 and the rotor shaft 22 rotate, the blades 31 are driven to rotate, if the air duct 23 is blocked by the balancing component 4, no air flow is formed in the air duct 23, so that the rotor shaft 22 and the blades 31 do not need to overcome air resistance at the moment of starting the motor, and after the rotation speed of the rotor frame 21 and the rotor shaft 22 is reached, even if the balancing component 4 opens the air duct 23, air is introduced into the air duct 23 to form air flow, and the torque superposed by the rotor shaft 22 and the blades 31 is not very large.
In this embodiment, each fan blade 31 is annularly disposed between the rotor frame 21 and the rotor shaft 22, so as to ensure that a stable axial air flow is generated in the air duct 23.
In this embodiment, the axial flow fan 31 is used as the fan 31, so that the heat dissipation effect can be improved.
In this embodiment, the balancing assembly 4 includes: a plurality of balancing units 41; the balance unit 41 is movably connected with the rotor shaft 22, and the balance unit 41 is movably and limitedly connected with the rotor skeleton 21; the rotor shaft 22 and the rotor frame 21 drive the balancing units 41 to rotate, and the balancing units 41 are far away from the rotor shaft 22 under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly 3 until the balancing units 41 move to the corresponding positions to enable the rotor shaft 22 to be in a dynamic balance state, and the balancing units 41 blow air towards the stator assembly 1.
In this embodiment, each balance unit 41 is not stressed when the motor is in a shutdown state, each balance unit 41 is abutted against the rotor shaft 22 to block the air inlet side of the heat dissipation assembly 3, when the motor is started, each balance unit 41 moves relative to the rotor shaft 22 and the rotor skeleton 21 under the action of centrifugal force, and because the rotor shaft 22 and the rotor skeleton 21 cannot completely conform to design requirements in the actual production process, and because each balance unit 41 is matched with the actual rotor shaft 22 and the rotor skeleton 21, each balance unit 41 moves by different distances relative to the rotor shaft 22 and the rotor skeleton 21 under the action of centrifugal force, each balance unit 41 is a different force arm relative to the rotor shaft 22, dynamic balance compensation is realized through each balance unit 41, so that the rotor shaft 22 can stably rotate, abrasion of the rotor shaft 22 is delayed, and output precision of the rotor shaft 22 is improved, and meanwhile, when the motor is in a stable rotation state, each balance unit 41 is positioned at one side of the stator assembly 1, each balance unit 41 rotates under the driving of the rotor shaft 22 and the rotor skeleton 21, so that each balance unit 41 can move relative to the rotor shaft 22 and the rotor skeleton 21, the dynamic balance unit 41 can take away heat dissipation assembly 12 in the stator assembly, and the heat dissipation assembly 12 can take away.
In this embodiment, the balancing units 41 are annularly arranged, so as to ensure that the dynamic balance requirement of the rotor shaft 22 can be met.
In the present embodiment, the balancing unit 41 includes: a balance plate 411; the balance plate 411 is movably connected with the rotor shaft 22, and the balance plate 411 is movably and limitedly connected with the rotor skeleton 21; the rotor shaft 22 and the rotor skeleton 21 drive the balance plate 411 to rotate, the balance plate 411 moves relative to the rotor shaft 22 and the rotor skeleton 21 under the action of centrifugal force, and when the balance plate 411 is far away from the rotor shaft 22, the balance plate 411 opens the air inlet side of the heat dissipation assembly 3 until the balance plate 411 moves to the corresponding position to enable the rotor shaft 22 to be in a dynamic balance state.
In this embodiment, the balance plate 411 can move relative to the rotor shaft 22 and the rotor frame 21, so as to block or open the air inlet side of the heat dissipation assembly 3, and meanwhile, the position moved by the balance plate 411 is adjusted to adjust the arm of force between the balance plate 411 and the rotor shaft 22, thereby adjusting the balance weight of the rotor shaft 22, satisfying the dynamic balance requirement of the rotor shaft 22, and meanwhile, the balance plate 411 blows air towards the stator assembly 1 along with the rotation of the rotor shaft 22 and the rotor frame 21, so as to take away the heat in the stator assembly 1.
In this embodiment, the balancing plate 411 is disposed in a fan shape, so that the balancing plate 411 can move relative to the rotor shaft 22 and the rotor frame 21.
In the present embodiment, the rotor shaft 22 is provided with a plurality of connection grooves 221, the rotor frame 21 is provided with a plurality of sliding grooves 211, the bottom of the balancing plate 411 is provided with a protrusion 4111, the protrusion 4111 is movably and limitedly clamped with the corresponding sliding groove 211 and the corresponding connection groove 221, and two sides of the protrusion 4111 are respectively connected with the rotor frame 21 through corresponding elastic members 4112.
In the present embodiment, the protruding portion 4111 can be inserted into the connecting slot 221 to position the rotor shaft 22 and the balance plate 411, and meanwhile, the protruding portion 4111 can move along the sliding slot 211, and the balance plate 411 is under the action of centrifugal force, and the protruding portion 4111 cooperates with the sliding slot 211 to realize the movable limit of the balance plate 411, and meanwhile, when the centrifugal force applied to the balance plate 411 is greater than the elastic force of the elastic member 4112, the protruding portion 4111 presses the elastic member 4112, the balance plate 411 is far away from the rotor shaft 22, and when the centrifugal force applied to the balance plate 411 is less than the elastic force of the elastic member 4112, the elastic member 4112 pushes the balance plate 411 to approach the rotor shaft 22.
In this embodiment, as an alternative implementation manner of the sliding groove 211 and the protruding portion 4111, the cross sections of the sliding groove 211 and the protruding portion 4111 are T-shaped, so as to implement the movable limitation between the balance plate 411 and the rotor frame 21.
In this embodiment, the balancing plate 411 is provided with a plurality of through holes 4113, and each through hole 4113 is provided with a blade 4114; when the balance plate 411 moves relative to the rotor shaft 22 and the rotor frame 21 until each through hole 4113 aligns with the stator assembly 1, the balance plate 411 rotates under the driving of the rotor shaft 22 and the rotor frame 21 to form an air flow between the through holes 4113 and the blades 4114 and blow air toward the stator assembly 1.
In the present embodiment, when the motor is in a stop state, each through hole 4113 is attached to the rotor frame 21, and even if the balance plate 411 rotates with the rotor frame 21 and the rotor shaft 22, each through hole 4113 will not intake air to form an air flow, which will not cause an increase in motor torque.
Embodiment 2, on the basis of embodiment 1, this embodiment provides a working method employing the high-efficiency durable brushless motor as provided in embodiment 1, comprising: when the motor is in a stop state, the balance component 4 blocks the air inlet side of the heat radiation component 3; after the motor is started, the stator assembly 1 drives the rotor assembly 2 to rotate, the balance assembly 4 adjusts the relative position with the rotor assembly 2 under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly 3, and the heat dissipation assembly 3 rotates under the drive of the rotor assembly 2 so that air inlet side air inlet forms air flow to dissipate heat of the rotor assembly 2 until the balance assembly 4 moves to the corresponding position to enable the rotor assembly 2 to be in a dynamic balance state, and the balance assembly 4 blows air to the stator assembly 1 under the drive of the rotor assembly 2.
In summary, the balance component is arranged on the air inlet side of the heat dissipation component, the air inlet side is blocked, the heat dissipation component does not generate air flow when the motor is started, namely air resistance is not needed to be overcome, the overload of current when the motor is started can be avoided, on one hand, the service life of the motor is prolonged, on the other hand, the heating value of the motor can be reduced, the balance component gradually opens the air inlet side along with the continuous acceleration of the rotor component, at the moment, the torque of the rotor component when rotating is smaller than the torque of the rotor component when starting, the heat dissipation component rotates along with the rotor component, the torque of the air flow generated by the heat dissipation component is reduced, the problem that the torque of a traditional brushless motor is overlarge when starting can be solved, meanwhile, the balance component continuously adjusts the relative position with the rotor component under the action of centrifugal force, the dynamic balance requirement of the rotor component is met, the abrasion of the brushless motor is delayed, the output precision of the brushless motor is improved, the balance component rotates along with the rotor component to form air flow towards the stator component, the stator component and the rotor component is cooled, and the heat dissipation efficiency is improved.
The components (components not illustrating the specific structure) selected in the present application are common standard components or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through routine experimental methods.
In the description of embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
With the above-described preferred embodiments according to the present application as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the description, but must be determined according to the scope of claims.
Claims (15)
1. A high efficiency, durable brushless motor, comprising:
a stator assembly, a rotor assembly, a heat dissipating assembly, and a balancing assembly; wherein the method comprises the steps of
The rotor assembly movably penetrates through the stator assembly, the heat dissipation assembly and the balance assembly are sleeved on the rotor assembly, and the balance assembly is positioned on the air inlet side of the heat dissipation assembly;
when the motor is in a stop state, the balance component blocks the air inlet side of the heat dissipation component;
after the motor starts, the stator assembly drives the rotor assembly to rotate, the balance assembly adjusts the relative position between the stator assembly and the rotor assembly under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly, and the heat dissipation assembly rotates under the drive of the rotor assembly, so that the air inlet side is used for forming air flow to dissipate heat of the rotor assembly until the balance assembly moves to the corresponding position so that the rotor assembly is in a dynamic balance state, and the balance assembly blows air to the stator assembly under the drive of the rotor assembly.
2. A high efficiency, durable brushless motor as claimed in claim 1, wherein,
the stator assembly includes: a stator backbone and stator windings;
the stator winding is mounted on a stator frame, and the rotor assembly penetrates through the stator frame.
3. A high efficiency, durable brushless motor as claimed in claim 1, wherein,
the rotor assembly includes: a rotor skeleton, rotor windings and a rotor shaft;
the rotor framework is positioned in the stator assembly, and the rotor winding is arranged on the rotor framework;
the rotor shaft is connected with the rotor framework through the heat dissipation assembly, and the balance assembly is movably connected with the rotor framework and the rotor shaft.
4. A high efficiency, durable brushless motor as claimed in claim 3, wherein,
an air duct is arranged between the rotor framework and the rotor shaft.
5. A high efficiency, durable brushless motor as claimed in claim 3, wherein,
the heat dissipation assembly includes: a plurality of fan blades;
each fan blade is respectively connected with the rotor framework and the rotor shaft.
6. A high efficiency, durable brushless motor as claimed in claim 5, wherein,
each fan blade ring is distributed between the rotor framework and the rotor shaft.
7. A high efficiency, durable brushless motor as claimed in claim 5, wherein,
the fan blade adopts an axial flow fan blade.
8. A high efficiency, durable brushless motor as claimed in claim 3, wherein,
the balance assembly includes: a plurality of balancing units;
the balance unit is movably connected with the rotor shaft, and is movably and limitedly connected with the rotor framework;
the rotor shaft and the rotor framework drive the balance units to rotate, the balance units are far away from the rotor shaft under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly until the balance units move to corresponding positions so that the rotor shaft is in a dynamic balance state, and the balance units blow towards the stator assembly.
9. A high efficiency, durable brushless motor as claimed in claim 8, wherein,
and each balance unit is annularly arranged.
10. A high efficiency, durable brushless motor as claimed in claim 8, wherein,
the balancing unit includes: a balance plate;
the balance plate is movably connected with the rotor shaft, and is movably and limitedly connected with the rotor framework;
the rotor shaft and the rotor framework drive the balance plate to rotate, the balance plate moves relative to the rotor shaft and the rotor framework under the action of centrifugal force, and when the balance plate is far away from the rotor shaft, the balance plate opens the air inlet side of the heat radiation assembly until the balance plate moves to the corresponding position to enable the rotor shaft to be in a dynamic balance state.
11. A high efficiency, durable brushless motor as claimed in claim 10, wherein,
the balance plate is in a fan-shaped arrangement.
12. A high efficiency, durable brushless motor as claimed in claim 10, wherein,
the rotor comprises a rotor shaft, a rotor framework, a plurality of connecting grooves, a plurality of sliding grooves, a balancing plate and a balancing plate, wherein the rotor shaft is provided with the plurality of connecting grooves, the rotor framework is provided with the plurality of sliding grooves, the bottom of the balancing plate is provided with a protruding portion, the protruding portion is movably limited and clamped with the corresponding sliding groove and the corresponding connecting groove, and two sides of the protruding portion are respectively connected with the rotor framework through corresponding elastic pieces.
13. A high efficiency, durable brushless motor as claimed in claim 12, wherein,
the cross sections of the sliding groove and the protruding part are T-shaped.
14. A high efficiency, durable brushless motor as claimed in claim 10, wherein,
the balance plate is provided with a plurality of through holes, and each through hole is provided with a blade respectively;
when the balance plate moves relative to the rotor shaft and the rotor skeleton until each through hole is aligned with the stator assembly, the balance plate rotates under the drive of the rotor shaft and the rotor skeleton so as to form air flow between the through holes and the blades and blow air towards the stator assembly.
15. A method of operation employing a high efficiency, durable brushless motor as claimed in any one of claims 1-14, comprising:
when the motor is in a stop state, the balance component blocks the air inlet side of the heat dissipation component;
after the motor is started, the stator assembly drives the rotor assembly to rotate, the balance assembly adjusts the relative position between the stator assembly and the rotor assembly under the action of centrifugal force so as to gradually open the air inlet side of the heat dissipation assembly, the heat dissipation assembly rotates under the drive of the rotor assembly, so that air flow is formed on the air inlet side to dissipate heat of the rotor assembly until the balance assembly moves to the corresponding position so that the rotor assembly is in a dynamic balance state, and the balance assembly blows air to the stator assembly under the drive of the rotor assembly.
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| CN202311151179.6A CN116885890B (en) | 2023-09-07 | 2023-09-07 | Efficient durable brushless motor and working method thereof |
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| CN202311151179.6A CN116885890B (en) | 2023-09-07 | 2023-09-07 | Efficient durable brushless motor and working method thereof |
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| CN116885890B CN116885890B (en) | 2023-11-21 |
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| CN116885890B (en) | 2023-11-21 |
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