CN114633615A - Intelligent hub motor with highly integrated brake and drive - Google Patents

Intelligent hub motor with highly integrated brake and drive Download PDF

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Publication number
CN114633615A
CN114633615A CN202210348176.0A CN202210348176A CN114633615A CN 114633615 A CN114633615 A CN 114633615A CN 202210348176 A CN202210348176 A CN 202210348176A CN 114633615 A CN114633615 A CN 114633615A
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CN
China
Prior art keywords
brake
motor
push rod
parking
braking
Prior art date
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Pending
Application number
CN202210348176.0A
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Chinese (zh)
Inventor
王国业
韩越强
路成宇
徐东鑫
张锐
刘恩宏
韩向辉
盖虎
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China Agricultural University
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China Agricultural University
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Publication date
Application filed by China Agricultural University filed Critical China Agricultural University
Priority to CN202210348176.0A priority Critical patent/CN114633615A/en
Publication of CN114633615A publication Critical patent/CN114633615A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/067—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/345—Parking lock mechanisms or brakes in the transmission using friction brakes, e.g. a band brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
    • F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/106—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28—Cams; Levers with cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/70—Rods

Abstract

The invention discloses an intelligent hub motor with highly integrated brake driving, which comprises a hub motor and a brake; the hub motor comprises a motor rotor (15), a motor stator (16), a bearing (19), a wheel (14), an axle (9) and a wheel spoke plate (20); the brake comprises a brake drum (1), a return spring (2), a brake push rod (3), a brake shoe (4), a brake push rod limiting pin (5), a controller (6), a brake push rod sliding pin (7), an eccentric cam (8), a brake shoe limiting pin (10), a parking brake motor (11), a parking push rod limiting pin (12), a parking push rod (13), a suspension mounting pin (17) and a brake bottom plate (18). The invention can integrate and optimize the advanced hub motor technology and the reliable traditional brake device, realize the integration of brake and drive system line control, achieve the excellent performances of high efficiency, energy saving, intelligence, safety, small volume, light weight and the like, and improve the electric and intelligent level of the automobile.

Description

Intelligent hub motor with highly integrated brake and drive
Technical Field
The invention relates to the technical field of innovative structural design and intelligent control, in particular to an intelligent hub motor with highly integrated brake and drive.
Background
In recent years, automobile electromotion and intellectualization become a hot spot of automobile technology research and application, but the maturity of new technology and large-scale application have many challenges, and the electromotion and intellectualization development still needs to be combined with the traditional automobile technology to achieve system optimization through integration and fusion. Advanced wheel hub motor technology and reliable traditional brake device are integrated and optimized, and the electric and intelligent level of the automobile is improved.
Disclosure of Invention
The invention aims to provide an intelligent hub motor with highly integrated brake driving, which realizes the integration of brake and drive system line control and achieves the excellent performances of high efficiency, energy conservation, intelligence, safety, small volume, light weight and the like.
A brake-drive highly integrated intelligent hub motor comprises a hub motor and a brake;
the hub motor comprises a motor rotor, a motor stator, a bearing, a wheel, an axle and a wheel spoke plate;
the brake comprises a brake drum, a return spring, a brake push rod, a brake shoe, a brake push rod limit pin, a controller, a brake push rod sliding pin, an eccentric cam, a brake shoe limit pin, a parking brake motor, a parking push rod limit pin, a parking push rod, a suspension mounting pin and a brake bottom plate;
the brake driving highly integrated intelligent hub motor is characterized in that a wheel, a wheel spoke plate and a motor rotor are fixedly connected and supported by a bearing; the motor stator is fixedly connected with the eccentric cam, and is sleeved on the axle together in an empty mode and can rotate freely; when the vehicle runs, a driver sends an accelerator instruction through an accelerator pedal, the accelerator instruction controls the hub motor to be electrified and rotated through the controller, and the motor rotor drives the wheel to rotate to drive the wheel to run;
the brake is a drum brake, a brake drum is fixedly connected with a motor rotor, a brake shoe is limited on a brake bottom plate by a brake shoe limiting pin with a large gap through a spring, and the brake bottom plate moves in a plane with a certain degree of freedom;
when the braking deceleration is smaller, a driver sends a braking instruction through a brake pedal, the braking instruction controls the hub motor to generate power and brake through the controller, the power is generated to charge a battery, and the braking energy is recovered;
when the brake deceleration is larger, the motor rotor drives the motor stator and the eccentric cam to deflect in one direction under the action of the generated electromagnetic force, the brake push rod is pushed to move outwards in the radial direction by the brake push rod sliding pin, the brake push rod limiting pin limits the brake push rod to move only in the radial direction, when the brake push rod moves outwards in the radial direction, the roller on the brake push rod is matched with the inclined surface of the brake shoe to push the left brake shoe and the right brake shoe to move towards two sides, so that the gap between the brake shoe and the brake drum is reduced, when the gap is eliminated, friction brake is generated between the brake shoe and the brake drum, so that the composite brake of motor brake kinetic energy feedback brake and friction brake is realized, the upper limit value of the brake deceleration can be set when the friction brake participates in by adjusting the rigidity of the return spring, when the brake deceleration is smaller, the electromagnetic force of the motor rotor to the motor stator is smaller, and when the acting force of the eccentric cam pushing the brake push rod to make the left brake shoe and the right brake shoe move towards two sides is not enough to overcome the elastic force of the return spring, the friction brake does not work, and only the brake energy is fed back for braking;
when the brake is released, the motor returns to a driving state, the motor rotor drives the motor stator and the eccentric cam to rotate reversely, the eccentric cam drives the brake push rod sliding pin to push the brake push rod to move radially inwards, the left brake shoe and the right brake shoe move towards the middle, so that a gap is generated between the brake shoes and the brake drum, the friction brake is eliminated, and the motor is in a driving running state;
when the parking brake is controlled to reversely rotate, the parking push rod drives the left brake shoe and the right brake shoe to move towards the middle, so that a gap is formed between the brake shoes and the brake drum, and the parking brake is eliminated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a front view of the overall structure of a brake-drive highly integrated intelligent hub motor of the present invention.
Fig. 2 is a side view of the whole structure of a brake driving highly integrated intelligent hub motor of the invention.
1. The brake comprises a brake drum, 2, a return spring, 3, a brake push rod, 4, a brake shoe, 5, a brake push rod limiting pin, 6, a controller, 7, a brake push rod sliding pin, 8, an eccentric cam, 9, an axle, 10, a brake shoe limiting pin, 11, a parking brake motor, 12, a parking push rod limiting pin, 13, a parking push rod, 14, a wheel, 15, a motor rotor, 16, a motor stator, 17, a suspension mounting pin, 18, a brake bottom plate, 19, a bearing, 20 and a wheel spoke plate.
Detailed Description
The invention is further described with reference to the following examples and accompanying drawings.
A brake-drive highly integrated intelligent hub motor comprises a hub motor and a brake;
the hub motor comprises a motor rotor 15, a motor stator 16, a bearing 19, a wheel 14, an axle 9 and a wheel spoke 20;
the brake comprises a brake drum 1, a return spring 2, a brake push rod 3, a brake shoe 4, a brake push rod limit pin 5, a controller 6, a brake push rod sliding pin 7, an eccentric cam 8, a brake shoe limit pin 10, a parking brake motor 11, a parking push rod limit pin 12, a parking push rod 13, a suspension mounting pin 17 and a brake bottom plate 18.
When the brake deceleration is smaller, the brake drives the highly integrated intelligent hub motor, a driver sends a brake instruction through a brake pedal, firstly, the brake instruction controls the hub motor to generate power for braking through the controller 6, the power is generated for charging a battery, the brake energy is recovered, the motor rotor 15 prevents the wheel 14 from rotating, the wheel 14 is braked, the brake energy feedback braking is realized, energy is saved, at the moment, the eccentric cam 8 rotates along with the motor stator 16 in one direction, the brake push rod 3 is pushed through the brake push rod sliding pin 7 to generate a trend of moving outwards in the radial direction, when the brake push rod 3 moves outwards in the radial direction, the left brake shoe and the right brake shoe are pushed through the matching of the roller on the brake push rod and the inclined plane of the left brake shoe and the right brake shoe 4 to generate a trend of moving towards two sides, when the brake force is smaller, the thrust generated towards the two sides by the left brake shoe and the right brake shoe 4 is also smaller, and the tension of the left brake shoe and the right brake shoe 4 by the return spring 2 cannot be overcome, therefore, the left and right brake shoes 4 cannot move to both sides, the gap between the brake shoes 4 and the brake drum 1 cannot be eliminated, and friction braking is not generated;
when the brake deceleration is large, the brake driving highly integrated intelligent hub motor, the eccentric cam 8 rotates along with the motor stator 16 in one direction, the brake push rod 3 is pushed to move radially outwards through the brake push rod sliding pin 7, the brake push rod limiting pin 5 limits the brake push rod 3 to move only radially, when the brake push rod 3 moves radially outwards, the rollers on the brake push rod and the inclined plane of the brake shoe 4 are matched to push the left brake shoe and the right brake shoe to move towards two sides, so that the gap between the brake shoe 4 and the brake drum 1 is reduced, when the gap is eliminated, friction brake is generated between the brake shoe 4 and the brake drum 1, the composite brake of motor brake kinetic energy feedback brake and friction brake is realized, and the upper limit value of the brake deceleration when the friction brake participates can be set through adjusting the rigidity of the return spring 2;
when the brake is released, the motor returns to an idle driving state, the motor rotor 15 drives the motor stator 16 and the eccentric cam 8 to rotate reversely, the eccentric cam 8 drives the brake push rod sliding pin 7 to push the brake push rod 3 to move radially inwards, so that the left brake shoe 4 and the right brake shoe 4 move towards the middle, a gap is generated between the brake shoes 4 and the brake drum 1, the friction brake is eliminated, and the motor is in a driving running state;
when parking braking is carried out, the parking braking motor 11 drives the parking push rod 13 to move radially outwards, the parking push rod limiting pin 12 limits the driving of the parking push rod 13 to only move radially, the rollers on the parking braking motor and the inclined surfaces of the brake shoes 4 are matched to push the left brake shoe 4 and the right brake shoe 4 to move towards two sides, gaps between the brake shoes 4 and the brake drum 1 are eliminated, friction braking is further compressed to generate friction braking, parking braking is achieved, one-way self-locking transmission is adopted between the parking braking motor 11 and the parking push rod 13, in the parking state, the parking braking motor 11 is not powered on, long-time parking braking is achieved through self-locking, when the parking braking motor 11 is controlled to rotate reversely, the left brake shoe 4 and the right brake shoe 4 are driven to move towards the middle through the parking push rod 13, gaps are accordingly generated between the brake shoes 4 and the brake drum 1, and parking braking is eliminated;
the controller 6 has motor driving and braking functions, generates driving force when supplying power to the motor, drives the vehicle to run, and generates braking force when controlling the motor to output electric energy and charge the battery, thereby realizing braking energy feedback braking;
the suspension mounting pin 17 is fixedly connected with the brake bottom plate 18 and the axle 9 and used for mounting the suspension, and the position of the suspension mounting pin can be determined according to the design size of the suspension.

Claims (7)

1. The brake-drive highly-integrated intelligent hub motor is characterized by comprising a hub motor and a brake;
the hub motor comprises a motor rotor (15), a motor stator (16), a bearing (19), a wheel (14), an axle (9) and a wheel spoke plate (20);
the brake comprises a brake drum (1), a return spring (2), a brake push rod (3), a brake shoe (4), a brake push rod limiting pin (5), a controller (6), a brake push rod sliding pin (7), an eccentric cam (8), a brake shoe limiting pin (10), a parking brake motor (11), a parking push rod limiting pin (12), a parking push rod (13), a suspension mounting pin (17) and a brake bottom plate (18).
2. A brake drive highly integrated intelligent in-wheel motor as claimed in claim 1, wherein: the wheel (14), the wheel spoke plate (20) and the motor rotor (15) are fixedly connected and supported by a bearing (19); the motor stator (16) is fixedly connected with the eccentric cam (8), and is sleeved on the axle (9) together in an empty mode and can rotate freely; when the vehicle runs, a driver sends out an accelerator instruction through an accelerator pedal, the accelerator instruction controls the hub motor to be electrified and rotated through the controller (6), and the motor rotor (15) drives the wheel (14) to rotate so as to drive the wheel (14) to run.
3. A brake drive highly integrated intelligent in-wheel motor as claimed in claim 1, wherein: the brake is a drum brake, a brake drum (1) is fixedly connected with a motor rotor (15), a brake shoe (4) is limited on a brake bottom plate (18) through a brake shoe limiting pin (10) with a large gap through a spring, and the brake bottom plate (18) moves in a plane with a certain degree of freedom.
4. A brake drive highly integrated intelligent in-wheel motor as claimed in claim 1, wherein: when the braking deceleration is small, a driver sends a braking instruction through a brake pedal, the braking instruction controls the hub motor to generate power and brake through the controller (6), the power is generated to charge the battery, and the braking energy is recovered.
5. A brake drive highly integrated intelligent in-wheel motor as claimed in claim 1, wherein: when the braking deceleration is larger, due to the action of the generated electromagnetic force, the motor rotor (15) drives the motor stator (16) and the eccentric cam (8) to deflect in one direction, the brake push rod (3) is pushed to move outwards in the radial direction by the brake push rod sliding pin (7), the brake push rod limiting pin (5) limits the brake push rod (3) to move only in the radial direction, when the brake push rod (3) moves outwards in the radial direction, the left brake shoe and the right brake shoe are pushed to move towards two sides by the matching of the roller on the brake push rod and the inclined surface of the brake shoe (4), the gap between the brake shoe (4) and the brake drum (1) is reduced, when the gap is eliminated, the friction brake is generated between the brake shoe (4) and the brake drum (1), the composite brake of the motor braking energy feedback brake and the friction brake is realized, and the upper limit value of the deceleration when the friction brake participates in can be set by adjusting the rigidity of the return spring (2), when the braking deceleration is smaller, the electromagnetic force of the motor rotor (15) to the motor stator (16) is also smaller, and when the acting force of pushing the brake push rod (3) through the eccentric cam (8) to enable the left brake shoe and the right brake shoe (4) to move towards two sides is not enough to overcome the elastic force of the return spring (2), the friction brake does not work, and only the brake energy is fed back for braking.
6. A brake drive highly integrated intelligent in-wheel motor as claimed in claim 1, wherein: when the brake is released, the motor returns to a driving state, the motor rotor (15) drives the motor stator (16) and the eccentric cam (8) to rotate reversely, the eccentric cam (8) drives the brake push rod sliding pin (7) to push the brake push rod (3) to move inwards in the radial direction, and the left brake shoe (4) and the right brake shoe (4) move towards the middle, so that a gap is generated between the brake shoes (4) and the brake drum (1), the friction brake is eliminated, and the motor is in a driving running state.
7. A brake drive highly integrated intelligent in-wheel motor as claimed in claim 1, wherein: when parking braking is carried out, a parking braking motor (11) drives a parking push rod (13) to move outwards in the radial direction, a parking push rod limiting pin (12) limits the parking push rod (13) to move only in the radial direction, a roller on the parking push rod limiting pin is matched with an inclined plane of a brake shoe (4) to push left and right brake shoes (4) to move towards two sides, a gap between the brake shoe (4) and a brake drum (1) is eliminated, friction braking is further generated by pressing, parking braking is realized, self-locking transmission is carried out between the parking braking motor (11) and the parking push rod (13), the parking braking motor (11) is not electrified in a parking state, long-time parking braking is realized by self-locking, when the parking braking motor (11) is controlled to rotate reversely, the left and right brake shoes (4) are driven to move towards the middle through the parking push rod (13), so that a gap is generated between the brake shoes (4) and the brake drum (1), the parking brake is removed.
CN202210348176.0A 2022-03-30 2022-03-30 Intelligent hub motor with highly integrated brake and drive Pending CN114633615A (en)

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Application Number Priority Date Filing Date Title
CN202210348176.0A CN114633615A (en) 2022-03-30 2022-03-30 Intelligent hub motor with highly integrated brake and drive

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Application Number Priority Date Filing Date Title
CN202210348176.0A CN114633615A (en) 2022-03-30 2022-03-30 Intelligent hub motor with highly integrated brake and drive

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JPH09273572A (en) * 1996-04-05 1997-10-21 Nisshinbo Ind Inc Drum braking device
CN201329859Y (en) * 2008-11-25 2009-10-21 辽宁曙光汽车集团股份有限公司 Hydraulic drum type brake with upper-lower double push rod halt vehicle mechanism
JP2011183985A (en) * 2010-03-10 2011-09-22 Toyota Auto Body Co Ltd Brake device of in-wheel motor
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