CN111884433A - Integrated hub motor suitable for electric power-assisted bicycle - Google Patents
Integrated hub motor suitable for electric power-assisted bicycle Download PDFInfo
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- CN111884433A CN111884433A CN202010818506.9A CN202010818506A CN111884433A CN 111884433 A CN111884433 A CN 111884433A CN 202010818506 A CN202010818506 A CN 202010818506A CN 111884433 A CN111884433 A CN 111884433A
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- printed circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/24—Devices for sensing torque, or actuated thereby
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/12—Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
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- 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
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides an integrated hub motor suitable for an electric power-assisted bicycle, which comprises a flywheel component, a torque sensor component and a motor component, wherein the torque sensor component comprises a rotor printed circuit board component and a stator printed circuit board component, and the rotor printed circuit board component and the stator printed circuit board component can interact; the motor assembly comprises a motor stator, a motor rotor and a motor middle shaft, wherein the motor stator is embedded in the motor middle shaft, and the motor rotor is rotatably arranged on the motor middle shaft; the rotor printed circuit board assembly is arranged on the flywheel assembly, the stator printed circuit board assembly is arranged on the motor stator and/or the motor middle shaft, the flywheel assembly is arranged on the motor middle shaft, and the flywheel assembly is respectively connected with the motor stator and the motor rotor. The invention has simple and reasonable structure, integrates the torque sensor and the hub motor together, can carry out power-assisted compensation according to the torque actually required by a user, and has good practicability.
Description
Technical Field
The invention relates to a hub motor, in particular to an integrated hub motor suitable for an electric power-assisted bicycle, and particularly relates to an integrated hub motor for a rear wheel of an electric power-assisted bicycle.
Background
The electric power-assisted bicycle is a novel two-wheel vehicle, a battery is used as an auxiliary power source, a motor is installed as power assistance, and the electric power-assisted bicycle is a novel vehicle capable of realizing manpower riding and motor power assistance integration. Compared with the commonly used electric power-assisted bicycle, the electric power-assisted bicycle is not provided with a control valve (namely an accelerating handle), and the bicycle is accelerated by acquiring the speed and the torque signal of a pedal and matching with the power assistance of a motor, so that the torque sensor is one of the most critical components on the electric power-assisted bicycle.
At present, a commonly used torque sensor of an electric power-assisted bicycle mostly adopts a Hall effect sensor, but the Hall effect sensor has low linear precision, factors such as easy demagnetization at high temperature can cause the precision error of the Hall sensor to be increased, the torque cannot be really reduced, and the power-assisted mileage is reduced. The traditional installation method of the motor torque sensor needs a large installation space in the motor, and has the characteristics of multiple parts, complex structure and the like.
Patent document with publication number CN205417979U discloses a novel power assisting sensor, including support, hall sensor and sprocket, the ring is installed all around on the sprocket side and is gone up the magnet steel, the sprocket passes through the sprocket shaft and installs on the support, with be equipped with on the sprocket shaft that the magnet steel corresponds hall sensor, the other end of support passes through the connecting pipe to be connected with the mounting panel, be equipped with the torsional spring in the connecting pipe. This patent document's technical scheme installs the sprocket on can free wobbling swinging arms, because be connected through a connecting pipe of taking the torsional spring between swinging arms and the mounting panel, therefore this swinging arms area resets and rises the effect of tight chain, can with the mounting panel direct mount on ordinary bicycle's rear axle, just can be accurate gather the speed of a motor vehicle of vehicle, however, the stability that adopts hall sensor measurement accuracy receives external environment's interference easily, in addition, there is not integrated motor, still need additionally to set up the motor if need realize the helping hand, make the structure relatively complicated, the integration level is not high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an integrated hub motor suitable for an electric power-assisted bicycle.
The invention provides an integrated hub motor suitable for an electric power-assisted bicycle, which comprises a flywheel assembly, a torque sensor assembly and a motor assembly, wherein the torque sensor assembly comprises a rotor printed circuit board assembly and a stator printed circuit board assembly, and the rotor printed circuit board assembly and the stator printed circuit board assembly can interact;
the motor assembly comprises a motor stator, a motor rotor and a motor middle shaft, wherein the motor stator is embedded in the motor middle shaft, and the motor rotor is rotatably arranged on the motor middle shaft;
the rotor printed circuit board assembly is arranged on the flywheel assembly, the stator printed circuit board assembly is arranged on the motor stator and/or the motor middle shaft, the flywheel assembly is arranged on the motor middle shaft, and the flywheel assembly is respectively connected with the motor stator and the motor rotor.
Preferably, the flywheel assembly comprises a first bearing, a flywheel cover, a second bearing, a flywheel clamping mounting seat and a third bearing;
the flywheel is arranged on the motor center shaft through a first bearing, the flywheel mounting seat is nested on the flywheel and is arranged on the motor center shaft through a third bearing, and the flywheel cover is connected with the flywheel mounting seat through a second bearing;
the flywheel cover is connected with the motor rotor to form an accommodating space, and the torque sensor assembly and the motor stator are positioned in the accommodating space;
the flywheel can be connected with a chain or a pedal of an external electric power-assisted bicycle.
Preferably, the flywheel cover is provided with a clamping groove in the circumferential direction, and the convex block is clamped in the clamping groove and connected with the clamping groove through the spring.
Preferably, a gap exists between the bump and the card slot.
Preferably, the rotor printed circuit board assembly comprises an inner rotor printed circuit board, an outer rotor printed circuit board;
the inner rotor printed circuit board is installed on the end face of the inner side of the flying clamp installation seat, and the outer rotor printed circuit board is installed on the end face of the flying wheel cover.
Preferably, the plane of the end face of the flywheel cover is higher than the plane of the end face of the lug of the card flying installation seat.
Preferably, the inner rotor printed circuit board and the outer rotor printed circuit board are concentric rings, and a plurality of groups of metal components are arranged on the annular end faces of the inner rotor printed circuit board and the outer rotor printed circuit board and comprise a plurality of metal blades;
the metal blades in the metal components are uniformly distributed at intervals and are radially distributed relative to the circle center of the inner rotor printed circuit board;
on the outer rotor printed circuit board, the plurality of groups of metal components are uniformly distributed relative to the circle center of the outer rotor printed circuit board, and a plurality of metal blades in one group of metal components are uniformly distributed at intervals and are radially distributed relative to the circle center of the outer rotor printed circuit board.
Preferably, the angle of radiation of a group of metal components on the outer rotor printed circuit board is equal to the angle of radiation of a group of metal components on the inner rotor printed circuit board.
Preferably, the stator printed circuit board assembly comprises an external connection receiving coil assembly, an internal connection receiving coil assembly, an exciting coil, a signal processing module and a circuit board body;
the circuit board body is annular, and external receiving coil subassembly, internal receiving coil subassembly, exciting coil and signal processing module all set up on the circuit board body, and external receiving coil subassembly, internal receiving coil subassembly and exciting coil all connect signal processing module, and internal receiving coil subassembly is located external receiving coil subassembly inboard, and exciting coil is including internal receiving coil subassembly, external receiving coil subassembly are enclosed to perpendicular mapping range on the circuit board body.
Preferably, the shape and size of the vertical mapping plane of the outer receiving coil assembly are the same as the outer rotor printed circuit board of the rotor printed circuit board assembly and can be vertically mapped onto the outer rotor printed circuit board of the rotor printed circuit board assembly;
the shape and size of the vertical mapping plane of the inner receiving coil assembly are the same as those of the inner rotor printed circuit board of the rotor printed circuit board assembly, and the vertical mapping plane can be vertically mapped onto the inner rotor printed circuit board of the rotor printed circuit board assembly.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has simple and reasonable structure, integrates the torque sensor and the hub motor together, can carry out power-assisted compensation according to the torque actually required by a user, and has good practicability.
2. The torque sensor assembly is arranged in the hub motor and cannot be exposed to the external environment, so that the service life of the torque sensor assembly is prolonged.
3. The invention arranges a spring between the flywheel cover and the card flying mounting seat, installs the outer rotor printed circuit board on the flywheel cover, installs the inner rotor printed circuit board on the flywheel cover, when the flywheel rotates to drive the flywheel mounting seat to rotate, the spring makes the rotating torque generated between the flywheel cover and the card flying mounting seat, and the rotating torque is transmitted to the stator printed circuit board assembly through the outer rotor printed circuit board and the inner rotor printed circuit board, thereby accurately measuring the rotating torque, and compensating the torque through the motor.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic diagram of an explosive structure of the present invention.
Fig. 2 is a schematic perspective view of an angle according to the present invention.
Fig. 3 is a schematic perspective view of another embodiment of the present invention.
Fig. 4 is a schematic cross-sectional structure of the present invention.
Fig. 5 is a schematic view of a connection structure of the flywheel mounting base, the flywheel cover and the flywheel according to the present invention.
FIG. 6 is a schematic diagram of a dog resulting from the connection of the flywheel mount and flywheel cover of the present invention.
Fig. 7 is a schematic structural diagram of the card flying mounting base of the present invention.
FIG. 8 is a schematic view of the connection structure of the rotor PCB assembly, the cartridge and the flywheel cover according to the present invention.
Fig. 9 is a schematic view of a connection structure of the stator printed circuit board assembly and the motor stator according to the present invention.
Fig. 10 is a schematic structural view of a rotor printed circuit board assembly according to the present invention.
Fig. 11 is a schematic structural view of a stator printed circuit board assembly according to the present invention.
The figures show that:
first bearing 1 excitation coil 703
Second bearing 4 motor stator 9
Fourth bearing 10 of card flying mount 5
Rotor printed circuit board assembly 6 motor rotor 11
End face 13 of flywheel cover of outer rotor printed circuit board 6b
Outer receive coil assembly 701 spring 15
Inner receive coil assembly 702
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
According to the integrated hub motor applicable to the electric power-assisted bicycle, as shown in fig. 1-4, the integrated hub motor comprises a flywheel component, a torque sensor component and a motor component, wherein the torque sensor component comprises a rotor printed circuit board component 6 and a stator printed circuit board component 7, and the rotor printed circuit board component 6 and the stator printed circuit board component 7 can interact; the motor assembly comprises a motor stator 9, a motor rotor 11 and a motor middle shaft 12, wherein the motor stator 9 is nested on the motor middle shaft 12, and the motor rotor 11 is rotatably arranged on the motor middle shaft 12; the rotor printed circuit board assembly 6 is installed on the flywheel assembly, the stator printed circuit board assembly 7 is installed on the motor stator 9 and/or the motor middle shaft 12, the flywheel assembly is installed on the motor middle shaft 12, and the flywheel assembly is connected with the motor stator 9 and the motor rotor 11 respectively. The motor rotor 11 is connected to the motor middle shaft 12 through a fourth bearing 10. Preferably, the flywheel 2 is a nine-speed flywheel. Preferably, the stator printed circuit board assembly 7 is in interference fit inside the motor stator 9 through a tool, and can also be mounted on a shaft sleeve on the motor center shaft 12 through a screw.
As shown in fig. 1, the flywheel assembly comprises a first bearing 1, a flywheel 2, a flywheel cover 3, a second bearing 4, a clamping flying mounting base 5 and a third bearing 8; the flywheel 2 is installed on a motor center shaft 12 through a first bearing 1, the flywheel mounting seat 5 is nested on the flywheel 2 and installed on the motor center shaft 12 through a third bearing 8, and the flywheel cover 3 is connected with the flywheel mounting seat 5 through a second bearing 4; the flywheel cover 3 is connected with the motor rotor 11 to form an accommodating space, and the torque sensor assembly and the motor stator 9 are positioned in the accommodating space; the flywheel 2 can be connected with a chain or a pedal of an external electric power-assisted bicycle.
As shown in fig. 5-7, the flyer mounting seat 5 is circumferentially provided with a projection, a spring 15 is arranged inside the projection, the flywheel cover 3 is circumferentially provided with a slot, and the projection is clamped in the slot and connected to the slot through the spring 15. There is a gap between the bump and the slot, i.e. gap d in fig. 6. As shown in fig. 5, 6 and 8, the rotor printed circuit board assembly 6 includes an inner rotor printed circuit board 6a, an outer rotor printed circuit board 6 b; the inner rotor printed circuit board 6a is installed on the inner side end face 14b of the card flying installation seat, and the outer rotor printed circuit board 6b is installed on the end face 13 of the flying wheel cover. The plane of the end face 13 of the flywheel cover is higher than the plane of the projection end face 14a of the card flying mounting seat, and in one embodiment, the plane of the end face 13 of the flywheel cover is 1mm higher than the plane of the projection end face 14a of the card flying mounting seat, so that the inner rotor printed circuit board 6a and the outer rotor printed circuit board 6b can rotate independently without interference.
As shown in fig. 10, the inner rotor printed circuit board 6a and the outer rotor printed circuit board 6b are concentric rings, and a plurality of sets of metal components are disposed on the circular end faces of the inner rotor printed circuit board 6a and the outer rotor printed circuit board 6b, and each metal component includes a plurality of metal blades 601; on the inner rotor printed circuit board 6a, the multiple groups of metal components are uniformly distributed relative to the circle center of the inner rotor printed circuit board 6a, and the multiple metal blades 601 in one group of metal components are uniformly distributed at intervals and are radially distributed relative to the circle center of the inner rotor printed circuit board 6 a; on the outer rotor printed circuit board 6b, the plurality of groups of metal components are uniformly distributed relative to the center of the outer rotor printed circuit board 6b, and a plurality of metal blades 601 in one group of metal components are uniformly distributed at intervals and radially distributed relative to the center of the outer rotor printed circuit board 6 b. The radiation angle of a group of metal components on the outer rotor printed circuit board 6b is equal to the radiation angle of a group of metal components on the inner rotor printed circuit board 6 a. Preferably, the metal components are arranged repeatedly on the inner rotor printed circuit board 6a and the outer rotor printed circuit board 6 b.
As shown in fig. 11, the stator pcb assembly 7 includes an outer receiving coil assembly 701, an inner receiving coil assembly 702, an exciting coil 703, a signal processing module 704, and a circuit board body; the circuit board body is annular, the external connection receiving coil assembly 701, the internal connection receiving coil assembly 702, the exciting coil 703 and the signal processing module 704 are all arranged on the circuit board body, the external connection receiving coil assembly 701, the internal connection receiving coil assembly 702 and the exciting coil 703 are all connected with the signal processing module 704, the internal connection receiving coil assembly 702 is located on the inner side of the external connection receiving coil assembly 701, and the exciting coil 703 vertically maps the range on the circuit board body to surround the internal connection receiving coil assembly 702 and the external connection receiving coil assembly 701. The shape and size of a vertical mapping plane of the external winding coil component 701 are the same as those of the outer rotor printed circuit board 6b of the rotor printed circuit board component 6, and the external winding coil component can be vertically mapped onto the outer rotor printed circuit board 6b of the rotor printed circuit board component 6; the shape and size of the vertical mapping plane of the internal connection receiving coil assembly 702 are the same as those of the inner rotor printed circuit board 6a of the rotor printed circuit board assembly 6 and can be vertically mapped onto the inner rotor printed circuit board 6a of the rotor printed circuit board assembly 6. Preferably, the exciting coil 703 is at least one group, the exciting coil 703 is formed by connecting one or more circles of metal wires in series along the circumferential direction, and the exciting coil 703 wraps the inner winding coil component 702 and the outer winding coil component 701 in a plane where the stator printed circuit board component 7 is vertically mapped; the signal processing module 704 can be connected to an external motor controller. Preferably, the external receiving coil assembly 701 includes a plurality of external receiving coils, the plurality of external receiving coils are respectively wound with a plurality of sine-like closed metal wires (as shown in fig. 11) in sequence along the circumferential direction, and the current directions of two adjacent closed metal wires are opposite; the outer reception coil assembly 701 is overlapped with a plane on which the outer rotor printed circuit board 6b is vertically mapped. Similarly, the internal receiving coil assembly 702 includes a plurality of internal receiving coils, the plurality of internal receiving coils are respectively wound with a plurality of sine-like closed metal wires in sequence along the circumferential direction (as shown in fig. 11), and the current directions of two adjacent closed metal wires are opposite; the inner receiving coil assembly 702 overlaps the plane in which the inner rotor printed circuit board 6a is vertically mapped.
After the stator pcb assembly 7 is energized, the exciting coil 703 forms an alternating electromagnetic field in its peripheral region by generating a high-frequency alternating voltage and current; according to faraday's law of electromagnetic induction, the magnetic flux of the closed coil changes to generate induced electromotive force on the closed coil, and when the alternating electromagnetic field generated by the exciting coil 703 passes through the external receiving coil assembly 701 and the internal receiving coil assembly 702, the induced electromotive force is generated on the plurality of quasi-sinusoidal closed metal wires on the external receiving coil assembly 701 and the internal receiving coil assembly 702. When the inner rotor printed circuit board 6a and the outer rotor printed circuit board 6b rotate, the metal blades 601 on the inner rotor printed circuit board 6a change the alternating electromagnetic field intensity of the exciting coil 703 in the area of the inner receiving coil assembly 702, so that the induced electromotive force on the inner receiving coil assembly 702 changes; the metal blades 601 on the outer rotor printed circuit board 6b change the alternating electromagnetic field intensity of the excitation coil 703 in the region of the outer receiving coil assembly 701, so that the induced electromotive force on the external receiving coil assembly 701 changes. The induced electromotive force on the outer receiving coil assembly 701 and the induced electromotive force on the inner receiving coil assembly 702 are input into a signal processing module, a torque signal is obtained through calculation, and the torque signal is transmitted to a motor controller, so that whether the motor performs power assistance is controlled.
Compared with a Hall sensor, the torque sensor assembly disclosed by the invention does not use a magnet, is immune to external magnetic field interference and is not influenced by high-temperature demagnetization, and the reliability of a sensor signal is ensured; because the torque sensor assembly is not interfered by an external magnetic field, the torque sensor assembly can be arranged inside a motor stator, so that the overall size of the motor is reduced, and meanwhile, the overall parts of the motor are few, the cost is low, and the manufacturing process is simple.
The working principle of the invention is as follows: in one embodiment, an integrated hub motor suitable for an electric power-assisted bicycle is installed on the electric power-assisted bicycle, and is powered on, during the riding process of the electric power-assisted bicycle, in a short time when a user steps on a pedal, a bicycle chain drives a flywheel 2 to rotate together, a flying clamp installation seat 5 embedded on the flywheel 2 rotates together with the flywheel, a flywheel cover 3 installed on one side of a motor rotor 11 is fixed, so that a spring 15 installed between the flying clamp installation seat 5 and the flywheel cover 3 is extruded to deform, an inner rotor printed circuit board 6a installed on an inner side end surface 14b of the flying clamp installation seat rotates along with the flying clamp installation seat 5, so that induced electromotive force on a corresponding inner connection winding coil assembly 702 on a stator printed circuit board assembly 7 is changed, and an outer rotor printed circuit board 6b installed on an end surface 13 of the flywheel cover is fixed at the moment, make the induced electromotive force on the external take-up coil subassembly 701 that corresponds on the stator printed circuit board subassembly 7 not change, difference voltage signal appears between two induced electromotive force, the size of this difference voltage signal is equal to the size of moment, signal processing module 704 inputs voltage signal into motor controller, power supply to the motor after the motor controller received signal, make motor rotor 11 begin to rotate, electronic rotor 11 drives flywheel lid 3 and rotates together simultaneously, flywheel lid 3 rotates the back, make the deformation of spring 15 recover, the difference value voltage of two induced electromotive force returns to zero this moment, the motor stops the power supply. When the user steps on the pedal for the next time, the actions are repeated, so that the power is assisted for the bicycle user, and meanwhile, the power of the power supply is saved.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The integrated hub motor suitable for the electric power-assisted bicycle is characterized by comprising a flywheel assembly, a torque sensor assembly and a motor assembly, wherein the torque sensor assembly comprises a rotor printed circuit board assembly (6) and a stator printed circuit board assembly (7), and the rotor printed circuit board assembly (6) and the stator printed circuit board assembly (7) can interact;
the motor assembly comprises a motor stator (9), a motor rotor (11) and a motor middle shaft (12), the motor stator (9) is nested on the motor middle shaft (12), and the motor rotor (11) is rotatably installed on the motor middle shaft (12);
the flywheel motor is characterized in that the rotor printed circuit board assembly (6) is installed on the flywheel assembly, the stator printed circuit board assembly (7) is installed on the motor stator (9) and/or the motor middle shaft (12), the flywheel assembly is installed on the motor middle shaft (12), and the flywheel assembly is connected with the motor stator (9) and the motor rotor (11) respectively.
2. The integrated hub motor for an electric power-assisted bicycle according to claim 1, wherein the flywheel assembly comprises a first bearing (1), a flywheel (2), a flywheel cover (3), a second bearing (4), a snap-in mounting seat (5) and a third bearing (8);
the flywheel (2) is installed on a motor center shaft (12) through a first bearing (1), the clamping fly installation seat (5) is nested on the flywheel (2) and installed on the motor center shaft (12) through a third bearing (8), and the flywheel cover (3) is connected with the clamping fly installation seat (5) through a second bearing (4);
the flywheel cover (3) is connected with the motor rotor (11) to form an accommodating space, and the torque sensor assembly and the motor stator (9) are positioned in the accommodating space;
the flywheel (2) can be connected with a chain or a pedal of an external electric power-assisted bicycle.
3. The integrated hub motor for the electric power-assisted bicycle according to claim 2, wherein the flyer mounting seat (5) is circumferentially provided with a projection, a spring (15) is arranged inside the projection, and the flywheel cover (3) is circumferentially provided with a clamping groove, and the projection is clamped in the clamping groove and connected with the clamping groove through the spring (15).
4. The integrated hub motor for an electric power-assisted bicycle according to claim 3, wherein a gap exists between the projection and the slot.
5. The integrated hub motor for an electric power-assisted bicycle according to claim 2, wherein the rotor printed circuit board assembly (6) comprises an inner rotor printed circuit board (6a), an outer rotor printed circuit board (6 b);
the inner rotor printed circuit board (6a) is installed on the inner side end face (14b) of the flyer clamping installation seat, and the outer rotor printed circuit board (6b) is installed on the end face (13) of the flyer cover.
6. The integrated hub motor for an electric power-assisted bicycle according to claim 5, wherein the plane of the end face (13) of the flywheel cover is higher than the plane of the end face (14a) of the boss of the flywheel mounting seat.
7. The integrated hub motor suitable for the electric power-assisted bicycle according to claim 5, wherein the inner rotor printed circuit board (6a) and the outer rotor printed circuit board (6b) are concentric rings, and a plurality of groups of metal components are arranged on the circular end faces of the inner rotor printed circuit board (6a) and the outer rotor printed circuit board (6b) and comprise a plurality of metal blades (601);
on the inner rotor printed circuit board (6a), the multiple groups of metal components are uniformly distributed relative to the circle center of the inner rotor printed circuit board (6a), and multiple metal blades (601) in one group of metal components are uniformly distributed at intervals and are radially distributed relative to the circle center of the inner rotor printed circuit board (6 a);
on the outer rotor printed circuit board (6b), the multiple groups of metal components are uniformly distributed relative to the circle center of the outer rotor printed circuit board (6b), and the multiple metal blades (601) in one group of metal components are uniformly distributed at intervals and are radially distributed relative to the circle center of the outer rotor printed circuit board (6 b).
8. The integrated hub motor for an electric power-assisted bicycle according to claim 7, wherein an angle of radiation of a group of metal components on the outer rotor printed circuit board (6b) is equal to an angle of radiation of a group of metal components on the inner rotor printed circuit board (6 a).
9. The integrated hub motor for an electric power-assisted bicycle according to claim 1, wherein the stator printed circuit board assembly (7) comprises an external receiving coil assembly (701), an internal receiving coil assembly (702), an exciting coil (703), a signal processing module (704) and a circuit board body;
the circuit board body is annular, and external receiving coil subassembly (701), internal receiving coil subassembly (702), exciting coil (703) and signal processing module (704) all set up on the circuit board body, and external receiving coil subassembly (701), internal receiving coil subassembly (702) and exciting coil (703) all connect signal processing module (704), and internal receiving coil subassembly (702) are located external receiving coil subassembly (701) inboard, and exciting coil (703) are including internal receiving coil subassembly (702), external receiving coil subassembly (701) are enclosed in the perpendicular mapping scope of circuit board body.
10. The integrated hub motor for an electric power-assisted bicycle according to claim 9, wherein the outer receiving coil assembly (701) has a shape and size of a vertical mapping plane identical to the outer rotor printed circuit board (6b) of the rotor printed circuit board assembly (6) and can be vertically mapped onto the outer rotor printed circuit board (6b) of the rotor printed circuit board assembly (6);
the shape and the size of a vertical mapping plane of the internal connection receiving coil assembly (702) are the same as those of an inner rotor printed circuit board (6a) of the rotor printed circuit board assembly (6) and can be vertically mapped onto the inner rotor printed circuit board (6a) of the rotor printed circuit board assembly (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010818506.9A CN111884433A (en) | 2020-08-14 | 2020-08-14 | Integrated hub motor suitable for electric power-assisted bicycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010818506.9A CN111884433A (en) | 2020-08-14 | 2020-08-14 | Integrated hub motor suitable for electric power-assisted bicycle |
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| Publication Number | Publication Date |
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| CN111884433A true CN111884433A (en) | 2020-11-03 |
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|---|---|---|---|
| CN202010818506.9A Pending CN111884433A (en) | 2020-08-14 | 2020-08-14 | Integrated hub motor suitable for electric power-assisted bicycle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115987029A (en) * | 2023-03-22 | 2023-04-18 | 常州市佳博机械制造有限公司 | Hub torque and rotating speed induction integrated motor |
-
2020
- 2020-08-14 CN CN202010818506.9A patent/CN111884433A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115987029A (en) * | 2023-03-22 | 2023-04-18 | 常州市佳博机械制造有限公司 | Hub torque and rotating speed induction integrated motor |
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