CN102673389B - Electric power piston driving type electric vehicle and working method thereof - Google Patents
Electric power piston driving type electric vehicle and working method thereof Download PDFInfo
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention relates to an electric power piston driving type electric vehicle which utilizes an electric power piston motor to replace gasoline and diesel engines in the previous motor vehicle and is suitable for electric power braking, and a working method thereof. The electric vehicle comprises an electric power piston motor, a clutch, a speed changing box, a vehicle transmission system and a starting system. When the electric power piston driving type electric vehicle works, a coil current direction of an electromagnet in the electric power piston motor keeps unchanged all the time; when a piston is about to reach upper and lower stopping points, the electromagnet is controlled to rapidly rotate along a height central line by 180 degrees so as to rapidly switch magnetic polarities of upper and lower ends of the electromagnet; therefore, the electromagnet repeatedly generates an acting force on the piston to drive a crank shaft and a fly wheel outwards outputs a positive or negative torque; and the electric power piston driving type electric vehicle avoids the delaying in the prior art that coil current cannot realize instantaneous reversing and ensures the driving stability of the electric vehicle.
Description
The application is that application number is: 201110027296.2, the applying date be January 25 in 2011 day, be called the dividing an application of electrical piston driving type electric vehicle > > that < < is suitable for electric braking.
Technical field
The present invention relates to the technical field of the battery-driven car of electric power piston motor driving, specifically a kind of electrical piston driving type electric vehicle and method of work thereof.
Background technology
Chinese patent literature CN101860168A discloses a kind of electric motor, its conventional engines air feed, fuel feeding, exhaust, ignition system remove, with electromagnet assembly, substitute, internal piston embeds permanent magnet, then by controlling the direction of current of magnet coil, carry out control plunger upper and lower displacement in cylinder, piston is through the external outputting power of connecting bar and crankshaft mechanism.This electric motor is applicable to the vehicle such as automobile, motor bike.
The patent documentation of similar technique scheme, also has CN1996724A, CN1255767A, CN200990555Y etc.
The weak point of above-mentioned electric power piston-type motor of the prior art is: by the flow through direction of current of magnet coil of frequent switching, change the magnetic polarity of electromagnet, thereby control the direction of the application force of electromagnet and piston, and then the shift reciprocately of control plunger; But in actual implementation process, because the direction of current of magnet coil can not instantaneously change, cause guaranteeing the horsepower output of electrical motor or the stability of moment of torsion.Therefore, the direction of current that adopt to switch the magnet coil of flowing through changes the magnetic polarity of electromagnet, thereby the technical scheme of the sense of displacement of control plunger does not have practicality.
For solving the problems of the technologies described above, Chinese patent literature CN101697445A discloses a kind of electrical motor, and it adopts alternately conduction of a pair of excitation coil setting up and down, so that piston reciprocating displacement.But in actual implementation process, because the electric current of excitation coil can not instantaneously change, and upper and lower excitation coil exist crosstalk mutually and magnetic in and etc. reason, this scheme also cannot be guaranteed the horsepower output of electrical motor or the stability of moment of torsion.
How improving the horsepower output of electric power piston-type motor or the stability of moment of torsion, is the technical matters that this area will solve.
In addition, existing battery-driven car often adopts motor direct-drive wheel, existing petrol and diesel oil self-propelled vehicle is repacked into the battery-driven car that adopts motor direct-drive, and cost is higher, operation is loaded down with trivial details and difficult realization.How directly changing the gasoline and diesel engine in existing petrol and diesel oil self-propelled vehicle into electrodynamic type, and utilize the directly driving system of driving machine motor-car such as flywheel in original self-propelled vehicle, power-transfer clutch, change speed gear box, is the technical matters that this area will solve.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple in structure, utilize electric power piston motor to change gasoline and diesel engine in original self-propelled vehicle to drive electrical piston driving type electric vehicle and the method for work thereof of driving system.
In order to solve the problems of the technologies described above, the invention provides a kind of electrical piston driving type electric vehicle, it comprises: brake system, electric power piston motor, be connected in flywheel on the bent axle in electric power piston motor, be located at the power-transfer clutch on flywheel, the change speed gear box being connected with the output shaft of power-transfer clutch, the vehicle drive system that is in transmission connection with the output shaft of change speed gear box; The gear ring of flywheel outer rim and one starts the driven wheel engagement of system; Described electric power piston motor comprises: a plurality of cylinder bodies, be located at the piston of being made by permanent magnet in cylinder body and connecting rod for each piston is connected with described transmission of crankshaft; Bent axle is located at the below of each cylinder body; The upper end of described cylinder body is provided with the electromagnet with cylinder body coaxial inner conductor, and magnet spool is connected with a coil driver, and this coil driver is connected with a CPU element; Electromagnet is located on the switching mechanism of being controlled by CPU element; The upper and lower stop place of contiguous cylinder body is respectively equipped with the upper and lower stroke switch being connected with CPU element, and the bottom of cylinder body is provided with the Hall element being connected with described CPU element; Described brake system comprises: brake pedal, the drg of being controlled by brake pedal transmission and the brake pedal sensor for detection of brake pedal position being connected with described CPU element.Each piston is symmetrically distributed in the height line of centers both sides of cylinder body in corresponding cylinder body, to guarantee that connecting rod is suitable for continuous driving crank, and makes the moment of torsion of bent axle output stable; Described Hall element is located at the bottom center of cylinder body, and relative with the bottom surface central authorities of described piston.
above-mentionedthe method of work of battery-driven car: when battery-driven car starts, adopt described in described startup system drive flywheel and described bent axle is rotated, described CPU element detects the sense of displacement of each piston by the Hall element of each cylinder base; If record the piston displacement downward in a cylinder body, described CPU element provides the electric current of respective direction to the magnet spool of this cylinder body top by described coil driver, so that the magnetic polarity of this electromagnet bottom is identical with the magnetic polarity of piston head, piston accelerates to move down because of the lower repulsion from electromagnet in this cylinder body; If record the piston displacement forward in a cylinder body, described CPU element provides the electric current of respective direction to the magnet spool of this cylinder body top by described coil driver, so that the magnetic polarity of this electromagnet bottom is contrary with the magnetic polarity of piston head, piston accelerates to move because of the upper suction from electromagnet in this cylinder body; Until each magnet spool obtain electric after, disconnect described startup system and keep the direction of current in each coil constant; Simultaneously, when described CPU element is recorded piston in a cylinder body and is about to arrive the bottom dead point of this cylinder body by described lower stroke switch, CPU element is controlled the electromagnet of this cylinder body top around the height line of centers Rotate 180 ° of this electromagnet by described switching mechanism, and piston has now arrived bottom dead point, because the magnetic polarity of electromagnet bottom is now contrary with the magnetic polarity of piston head, piston starts in this cylinder body to top offset because of the upper suction from electromagnet; When described CPU element is recorded piston in a cylinder body and is about to arrive the top dead point of this cylinder body by described upper stroke switch, CPU element is controlled this cylinder body top electromagnet by described switching mechanism is around 180 ° of the height line of centers contrarotations of this electromagnet, and piston has now arrived top dead point, because the magnetic polarity of electromagnet bottom is now identical with the magnetic polarity of piston head, piston starts to bottom offset because of the lower repulsion from electromagnet; So repeatedly, thereby make each piston drive described crankshaft operation and drive described flywheel output positive-torque through corresponding connecting rod, flywheel drives vehicle drive system by power-transfer clutch, change speed gear box, thereby drives battery-driven car.
When recording brake pedal by brake pedal sensor, CPU element is operated, while being brake system enforcement braking, CPU element actuating motor retrosequence, that is: CPU element is first controlled described coil driver and is stopped to each coil power supply, then by described CPU element, by described Hall element, detected the sense of displacement of each piston, if record piston displacement downward, CPU element provides the electric current of respective direction to corresponding coil by described coil driver, so that the magnetic polarity of corresponding electromagnet bottom is contrary with the magnetic polarity of piston head, to reduce the speed that moves down of piston, thereby brake described bent axle, if record piston displacement forward, CPU element provides the electric current of respective direction to corresponding coil by described coil driver, so that the magnetic polarity of corresponding electromagnet bottom is identical with the magnetic polarity of piston head, with reduce piston on move speed, thereby brake described bent axle, when described bent axle does not shut down, if CPU element records by described lower stroke switch the bottom dead point that this piston is about to arrive this cylinder body, CPU element is controlled the electromagnet of this cylinder body top around the height line of centers Rotate 180 ° of this electromagnet by described switching mechanism, if piston now has arrived bottom dead point and has started to top offset, because the magnetic polarity of electromagnet bottom is now identical with the magnetic polarity of piston head, piston is braked described bent axle in beginning to bearing in top offset from the lower repulsion of electromagnet, if CPU element records by described upper stroke switch the top dead point that this piston is about to arrive this cylinder body, the electromagnet that CPU element is controlled this cylinder body top by described switching mechanism is around 180 ° of the height line of centers contrarotations of this electromagnet, if piston now has arrived top dead point and has started to bottom offset, because the magnetic polarity of electromagnet bottom is now contrary with the magnetic polarity of piston head, piston is braked described bent axle because of the upper suction from electromagnet, so repeatedly, so that described flywheel is externally exported negative torque, until described bent axle while being about to shut down, stops to each coil power supply, or, until that CPU element records brake pedal by brake pedal sensor is released, when brake system stops implementing braking, stop to each coil power supply.
Technique scheme of the present invention has the following advantages compared to existing technology: in the course of the work, magnet spool direction of current remains constant to (1) electric power piston-type motor of the present invention; When piston is about to arrive upper and lower stop, control electromagnet around 180 ° of its height line of centers fast rotational, to switch fast the magnetic polarity of electromagnet upper and lower side, thereby make electromagnet repeatedly to piston, produce positive acting power, and then driving crank make flywheel externally export positive-torque.The such scheme that the present invention adopts, that has avoided prior art cannot realize the time delay that instantaneous reverse brings because of coil current, and then makes the horsepower output of electrical motor of the present invention or moment of torsion have good stability, and practicality is better.(2) electrical motor of the present invention is when starting, adopt startup system that described flywheel is rotated, CPU element detects the sense of displacement of each piston by the Hall element in each cylinder body, so that the electric current of respective direction to be provided to each coil by coil driver according to the sense of displacement of each piston, to realize each piston by corresponding connecting rod driving crank continuous operation, then disconnect startup system, thereby realized the reliable startup of electrical motor of the present invention.(3) in flywheel operation process, while needing flywheel externally to export negative torque, first stop to each coil power supply, then CPU element detects the sense of displacement of each piston by the Hall element in each cylinder body, and to each coil, the electric current of respective direction is provided and keeps direction of current constant by coil driver according to the sense of displacement of each piston, then according to the position of each piston, by electromagnet, around the mode of 180 ° of its height line of centers fast rotational, switch fast the magnetic polarity of electromagnet upper and lower side, thereby make electromagnet repeatedly to each piston, produce dumping force, and then brake bent axle and make described flywheel externally export negative torque.(4) Hall element in the present invention is located at the bottom center of cylinder body, and relative with the bottom surface central authorities of described piston.Due to two magnetic poles of piston and two magnetic poles of electromagnet same lineal layout up and down, so the electromagnetic signal that Hall element obtains is substantially from piston base, and Hall element is not subject to the interference of electromagnet substantially, has guaranteed the reliability that piston position detects.During concrete enforcement, also can adopt electromagnetic compensation and/or shielding except the shielding measure of the electromagnetic signal of vertical direction, improve the reliability of Hall element output signal.(5), in the present invention, each piston is symmetrically distributed in the height line of centers both sides of cylinder body in corresponding cylinder body, to guarantee that the application force on each piston action and bent axle has good homogeneity and stability.(6) battery-driven car of the present invention mainly refers to electronlmobil, can be also battery-operated motor cycle, electro-tricycle, electric agricultural mechanical car etc.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the electric power piston-type motor in embodiment;
Fig. 2 be electric power piston-type motor in embodiment adopt a kind of for controlling electromagnet around the switching mechanism of its height line of centers Rotate 180 ° and the structural representation of cylinder body;
Fig. 3 is the circuit block diagram of the control circuit of described electric power piston-type motor;
Fig. 4 is the transmission system constructional drawing of the electrical piston driving type electric vehicle in embodiment;
Fig. 5 is the described switching mechanism of another kind of the electric power piston-type motor employing in embodiment and the structural representation of cylinder body.
The specific embodiment
See Fig. 1-3, the electrical piston driving type electric vehicle that is suitable for electric braking of the present embodiment, it comprises: brake system, electric power piston motor 20, be connected in flywheel on the bent axle in electric power piston motor 20, be located at the power-transfer clutch 21 on flywheel, the change speed gear box 22 being connected with the output shaft of power-transfer clutch 21, the vehicle drive system that is in transmission connection with the output shaft of change speed gear box 22; The gear ring of flywheel outer rim and one starts the driven wheel engagement of system.This startup system adopts the of the prior art and matching used startup system of existing engine petrol.
Described vehicle drive system comprises: the axle drive shaft 24 being in transmission connection with the output shaft of change speed gear box 22 through universal-joint 23, the diff 27 being in transmission connection with axle drive shaft 24 through another universal-joint and the wheel being connected by semiaxis 26 transmissions with diff 27.Wherein, at axle drive shaft 24 and diff 27, main reduction gear 25 can be set.
Described electric power piston motor 20 comprises: the cylinder body 1 that a plurality of high resistance non-magnet materials (as: aluminum alloy, copper alloy etc.) are made, be located at the piston of being made by permanent magnet 5 in cylinder body 1, be located at bent axle 2 and the connecting rod 3 for each piston 5 and described bent axle 2 are in transmission connection of each cylinder body 1 below; The upper end of described cylinder body 1 is provided with the electromagnet 7 with cylinder body 1 coaxial inner conductor, and the coil 8 of electromagnet 7 is connected with a coil driver; The central authorities of electromagnet 7 are fixed in a horizontal rotating shaft 9, and this rotating shaft 9 is located at cylinder body 1 top by pair of bearing 4; One end one change speed gear box 11 of rotating shaft 9 is connected with stepping motor 12 transmissions; Described coil driver is connected with a CPU element with stepping motor 12; The upper and lower stop place of contiguous cylinder body 1 is respectively equipped with the upper and lower stroke switch 13 and 14 being connected with CPU element; The bottom center of described cylinder body 1 is provided with a Hall element 15 being connected with described CPU element.Described Hall element 15 is relative with the bottom surface central authorities of described piston 5.Hall element 15 is located in the metal tube of a non-magnet material, this metal tube and described piston 5 coaxial inner conductors.Further to make electromagnetic signal that Hall element 15 obtains substantially from the bottom of piston.
Described brake system comprises: brake pedal and the brake pedal sensor for detection of brake pedal position being connected with described CPU element; Described upper and lower stroke switch 13 and 14 adopts contact or infrared-type travel switch.Piston 5 is provided with wear-resisting ring.
Each piston 5 is symmetrically distributed in the height line of centers both sides of cylinder body 1 in corresponding cylinder body 1.To guarantee that connecting rod 3 is suitable for continuous driving crank 2, and make the moment of torsion of bent axle 2 outputs stable.
During work, adopt flywheel described in described startup system drive, so that described bent axle 2 rotates, described CPU element detects the sense of displacement of each pistons 5 by the Hall element 15 of each cylinder body 1 bottom, now, if record piston 5 displacement downward in a cylinder body 1, described CPU element provides the electric current of respective direction to the coil 8 of the electromagnet 7 of this cylinder body 1 top by described coil driver, so that the magnetic polarity of these electromagnet 7 bottoms is identical with the magnetic polarity at piston 5 tops, piston 5 moves down in the interior acceleration of this cylinder body 1 because of the lower repulsion from electromagnet 7, or, if now record piston 5 displacement forward in a cylinder body 1, described CPU element provides the electric current of respective direction to the coil 8 of the electromagnet 7 of this cylinder body 1 top by described coil driver, so that the magnetic polarity of these electromagnet 7 bottoms is contrary with the magnetic polarity at piston 5 tops, piston 5 moves because of the upper suction from electromagnet 7 in the interior acceleration of this cylinder body 1, until the coil 8 of each electromagnet 7 electric after, disconnect described startup system and keep the direction of current in each coil 8 constant, simultaneously, when described CPU element is recorded piston 5 in a cylinder body 1 and is about to arrive the bottom dead point of this cylinder body 1 by described lower stroke switch 14, CPU element is to an impulse singla of described stepping motor 12 outputs, to drive this stepping motor 12 to rotate a fixing angle by the direction of setting, thereby make stepping motor 12 control described rotating shaft 9 Rotate 180s ° through described change speed gear box 11, and piston now 5 arrives bottom dead point just or, because the magnetic polarity of electromagnet 7 bottoms is now contrary with the magnetic polarity at piston 5 tops, piston 5 starts at this cylinder body 1 interior to top offset because of the upper suction from electromagnet 7, when described CPU element is recorded this piston 5 and is about to arrive the top dead point of this cylinder body 1 by described upper stroke switch 13, CPU element is to described stepping motor 12 another impulse singlas of output, to drive fixing angle of this stepping motor 12 counter-rotation, thereby make stepping motor 12 control 180 ° of described rotating shaft 9 contrarotations through described change speed gear box 11, and piston now 5 arrives top dead point just or, and piston 5 starts to bottom offset because of lower repulsion, so repeatedly, thereby make each piston 5 drive described bent axle 2 to turn round to drive described flywheel output positive-torque through corresponding connecting rod 3, flywheel drives vehicle drive system by power-transfer clutch 21, change speed gear box 22, thereby drives battery-driven car.
During the invariant position of the described speed governing pedal of non-releasing orientation, described CPU element detects the position of described piston 5 by Hall element 15, to draw the spacing of described piston in same cylinder body 15 and electromagnet 7, and by described coil driver, adjust the size of current in described coil 8 in real time according to this spacing size, so that described piston 5 moves past in journey at upper and lower, keep the size of the application force between piston 5 and electromagnet 7 stable, so that the power of this electrical motor output or the stability of moment of torsion are better.When the position of described speed governing pedal changes, the described CPU element also described piston in same cylinder body 15 is adjusted the size of current in each coil 8 in real time with the spacing of electromagnet 7, so that the variation of the application force between piston 5 and electromagnet 7 is linear, and corresponding with the change in location of described speed governing pedal, and then make the speed of a motor vehicle be linear change, to pass through driver comfort.
The speed governing pedal of this battery-driven car (it adopts Das Gaspedal of the prior art) is provided with the speed governing pedal sensor being connected with described CPU element, CPU element detects the position of speed governing pedal by speed governing pedal sensor, and then control the size of current of each coil 8, thereby realize the speed of a motor vehicle, control.Speed governing pedal sensor can be selected pressure sensor, and the degree of depth of being entered into according to speed governing pedal is exported corresponding force value signal.Described speed governing pedal can adopt speed regulating handle (it adopts the speed regulating handle of Electrical Bicycle of the prior art) to replace, to be applied to battery-operated motor cycle or electro-tricycle etc.
Described CPU element is also connected with the vehicle Slope Transducer (can adopt the disclosed vehicle slope sensor of Chinese patent literature CN2703248) for detection of vehicle chassis angle; When the moving ahead of this battery-driven car, if record when vehicle in front is in upwards climbing by described vehicle Slope Transducer, and record the invariant position of speed governing pedal, CPU element is according to the gradient size corresponding electric current of heightening each coil 8 automatically, so that the speed of a motor vehicle is stable.If recorded and come down downwards and record the invariant position of speed governing pedal when vehicle in front by described vehicle Slope Transducer, CPU element is according to the gradient size corresponding electric current of turning down each coil 8 automatically, so that the speed of a motor vehicle is stable.
When recording downward grades when larger, be for example greater than 10 °, and it is released to record speed governing pedal, no matter whether brake pedal is operated, CPU element actuating motor retrosequence.
When CPU element actuating motor retrosequence, because described bent axle 2 is in operative condition, CPU element is first controlled described coil driver and is stopped to 8 power supplies of each coil; Then by described CPU element, by described Hall element 15, detected the sense of displacement of each piston 5, if record piston 5 displacement downward, CPU element provides the electric current of respective direction to corresponding coil 8 by described coil driver, so that the magnetic polarity of corresponding electromagnet 7 bottoms is contrary with the magnetic polarity at piston 5 tops, to reduce the speed that moves down of piston 5, thereby brake described bent axle 2, that is: make described flywheel externally export negative torque; If record piston 5 displacement forward, CPU element provides the electric current of respective direction to corresponding coil 8 by described coil driver, so that the magnetic polarity of corresponding electromagnet 7 bottoms is identical with the magnetic polarity at piston 5 tops, with reduce piston 5 on move speed, thereby brake described bent axle 2.
When described bent axle 2 does not shut down yet, if CPU element records by described lower stroke switch 14 bottom dead point that this piston 5 is about to arrive this cylinder body 1, CPU element is to an impulse singla of described stepping motor 12 outputs, to drive this stepping motor 12 to rotate a fixing angle by the direction of setting, thereby make stepping motor 12 control described rotating shaft 9 Rotate 180s ° through described change speed gear box 11, if piston now 5 just or arrives bottom dead point and starts to top offset, because the magnetic polarity of electromagnet 7 bottoms is now identical with the magnetic polarity at piston 5 tops, piston 5 is braked described bent axle 2 starting to bear in top offset from the lower repulsion of electromagnet 7, if CPU element records by described upper stroke switch 13 top dead point that this piston 5 is about to arrive this cylinder body 1, CPU element is to described stepping motor 12 another impulse singlas of output, to drive this stepping motor 12 to rotate backward a fixing angle, thereby make stepping motor 12 control 180 ° of described rotating shaft 9 contrarotations through described change speed gear box 11, if piston now 5 just or arrives top dead point and starts to bottom offset, because the magnetic polarity of electromagnet 7 bottoms is now contrary with the magnetic polarity at piston 5 tops, piston 5 is because braking described bent axle 2 from the upper suction of electromagnet 7, so repeatedly, so that described flywheel is externally exported negative torque, until the speed of a motor vehicle is down in safety speed, as 30Km/h, or, until recording speed governing pedal by speed governing pedal sensor, CPU element again depressed, now CPU element is again controlled described flywheel and is normally exported positive-torque.
The rate of displacement that described CPU element detects each pistons 5 by Hall element 15 during lower than preset value (this preset value can obtain by experiment), judges that described bent axle 2 is about to shut down.The electric current of considering coil 8 can not transient change, and therefore, when described bent axle 2 is about to shut down, the power supply of early cut-off coil 8, is beneficial to energy-conservation and guarantees that described bent axle 2 can shut down in time.
When externally exporting brake torque by described bent axle 2, the electric current that described coil driver provides to described coil 8 is pulse current.Described coil 8 one sides are provided with air cooling equipment or described coil 8 is located in oil cooling device; The temperature of the dutycycle of the pulse current in coil 8 and described coil 8 is linear or non-linear negative correlation, in case principal vertical line circle 8 is overheated.
In battery-driven car driving process, if CPU element records the speed of a motor vehicle lower than 30Km/h by car speed sensor, CPU element startup idling slides program.Be that CPU element is controlled size of current in each coil 8, so that the speed of a motor vehicle is stable at 20Km/h.
The brake system of this battery-driven car adopts the brake system of the gasoline fueled motor vehicle of prior art.
When the speed of a motor vehicle is higher, as be greater than 40Km/h, CPU element records brake pedal by brake pedal sensor and is operated, while being brake system enforcement braking, CPU element is actuating motor retrosequence also, until described bent axle 2 while being about to shut down, stops to 8 power supplies of each coil; Or, until that CPU element records brake pedal by brake pedal sensor is released, when brake system stops implementing braking, stop to 8 power supplies of each coil; CPU element is controlled described flywheel output positive-torque again; If when now recording speed governing pedal and being operated, CPU element is controlled described flywheel output positive-torque again.
Fig. 5 is the structural representation of another kind of described switching mechanism, electromagnet 7 is located on a miniature gears 16, and the center shaft of this miniature gears 16 is located on the center-point of electromagnet 7, this miniature gears 16 is meshed with a big gear wheel 17, and this big gear wheel 17 is connected with described change speed gear box 11 transmissions; During work, CPU element is to an impulse singla of described stepping motor 12 outputs, to drive this stepping motor 12 to rotate a fixing angle by the direction of setting, thereby make stepping motor 12 control 180 ° of described miniature gears 16 cws or left-hand revolutions through described change speed gear box 11, big gear wheel 17.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And these belong to apparent variation that spirit of the present invention extended out or change still among protection scope of the present invention.
Claims (3)
1. a method of work for electrical piston driving type electric vehicle, is characterized in that described battery-driven car comprises: brake system, electric power piston motor (20), be connected in flywheel on the bent axle in electric power piston motor (20), be located at the power-transfer clutch (21) on flywheel, the change speed gear box (22) being connected with the output shaft of power-transfer clutch (21), the vehicle drive system that is in transmission connection with the output shaft of change speed gear box (22);
The gear ring of described flywheel outer rim and one starts the driven wheel engagement of system;
Described electric power piston motor (20) comprising: a plurality of cylinder bodies (1), be located at the piston of being made by permanent magnet (5) and the connecting rod (3) for each piston (5) and described bent axle (2) are in transmission connection in cylinder body (1); Bent axle (2) is located at the below of each cylinder body (1);
The upper end of described cylinder body (1) is provided with the electromagnet (7) with cylinder body (1) coaxial inner conductor, and the coil (8) of electromagnet (7) is connected with a coil driver, and this coil driver is connected with a CPU element; Electromagnet (7) is located on the switching mechanism of being controlled by CPU element;
The upper and lower stop place of contiguous cylinder body (1) is respectively equipped with the upper and lower stroke switch (13,14) being connected with CPU element, and the bottom of cylinder body (1) is provided with the Hall element (15) being connected with described CPU element; Described brake system comprises: brake pedal, the drg of being controlled by brake pedal transmission and the brake pedal sensor for detection of brake pedal position being connected with described CPU element;
Each piston (5) is symmetrically distributed in the height line of centers both sides of cylinder body (1) in corresponding cylinder body (1), to guarantee that connecting rod (3) is suitable for continuous driving crank (2), and makes the moment of torsion of bent axle (2) output stable;
Described Hall element (15) is located at the bottom center of cylinder body (1), and relative with the bottom surface central authorities of described piston (5);
The method of work of above-mentioned battery-driven car comprises: when battery-driven car starts, adopt described in described startup system drive flywheel and described bent axle (2) is rotated, described CPU element detects the sense of displacement of each piston (5) by the Hall element (15) bottom each cylinder body (1);
If record piston (5) displacement downward in a cylinder body (1), described CPU element provides the electric current of respective direction to the coil (8) of the electromagnet (7) of this cylinder body (1) top by described coil driver, so that the magnetic polarity of this electromagnet (7) bottom is identical with the magnetic polarity at piston (5) top, piston (5) accelerates to move down because of the lower repulsion from electromagnet (7) in this cylinder body (1);
If record piston (5) displacement forward in a cylinder body (1), described CPU element provides the electric current of respective direction to the coil (8) of the electromagnet (7) of this cylinder body (1) top by described coil driver, so that the magnetic polarity of this electromagnet (7) bottom is contrary with the magnetic polarity at piston (5) top, piston (5) accelerates to move because of the upper suction from electromagnet (7) in this cylinder body (1);
Until the coil (8) of each electromagnet (7) electric after, disconnect described startup system and keep the direction of current in each coil (8) constant;
Simultaneously, when described CPU element is recorded piston (5) in a cylinder body (1) and is about to arrive the bottom dead point of this cylinder body (1) by described lower stroke switch (14), CPU element is controlled the electromagnet (7) of this cylinder body (1) top around the height line of centers Rotate 180 ° of this electromagnet (7) by described switching mechanism, and piston now (5) has arrived bottom dead point, because the magnetic polarity bottom electromagnet (7) is now contrary with the magnetic polarity at piston (5) top, piston (5) starts in this cylinder body (1) to top offset because of the upper suction from electromagnet (7), when described CPU element is recorded piston (5) in a cylinder body (1) and is about to arrive the top dead point of this cylinder body (1) by described upper stroke switch (13), CPU element is controlled this cylinder body (1) top electromagnet (7) by described switching mechanism is around 180 ° of the height line of centers contrarotations of this electromagnet (7), and piston now (5) has arrived top dead point, because the magnetic polarity of electromagnet (7) bottom is now identical with the magnetic polarity at piston (5) top, piston (5) starts to bottom offset because of the lower repulsion from electromagnet (7), so repeatedly, thereby make each piston (5) drive described bent axle (2) to turn round and drive described flywheel output positive-torque through corresponding connecting rod (3), flywheel drives vehicle drive system by power-transfer clutch (21), change speed gear box (22), thereby drives battery-driven car,
When recording brake pedal by brake pedal sensor, CPU element is operated, when brake system is implemented braking, and CPU element actuating motor retrosequence, that is:
CPU element is first controlled described coil driver and is stopped powering to each coil (8), then by described CPU element, by described Hall element (15), detected the sense of displacement of each piston (5), if record a piston (5) displacement downward, CPU element provides the electric current of respective direction to corresponding coil (8) by described coil driver, so that the magnetic polarity of corresponding electromagnet (7) bottom is contrary with the magnetic polarity at piston (5) top, to reduce the speed that moves down of piston (5), thereby brake described bent axle (2); If record a piston (5) displacement forward, CPU element provides the electric current of respective direction to corresponding coil (8) by described coil driver, so that the magnetic polarity of corresponding electromagnet (7) bottom is identical with the magnetic polarity at piston (5) top, to move speed on reduction piston (5), thereby brake described bent axle (2);
When described bent axle (2) does not shut down, if CPU element records by described lower stroke switch (14) bottom dead point that this piston (5) is about to arrive this cylinder body (1), CPU element is controlled the electromagnet (7) of this cylinder body (1) top around the height line of centers Rotate 180 ° of this electromagnet (7) by described switching mechanism, if piston now (5) has arrived bottom dead point and has started to top offset, because the magnetic polarity bottom electromagnet (7) is now identical with the magnetic polarity at piston (5) top, piston (5) is braked described bent axle (2) starting to bear in top offset from the lower repulsion of electromagnet (7), if CPU element records by described upper stroke switch (13) top dead point that this piston (5) is about to arrive this cylinder body (1), the electromagnet (7) that CPU element is controlled this cylinder body (1) top by described switching mechanism is around 180 ° of the height line of centers contrarotations of this electromagnet (7), if piston now (5) has arrived top dead point and has started to bottom offset, because the magnetic polarity bottom electromagnet (7) is now contrary with the magnetic polarity at piston (5) top, piston (5) is because braking described bent axle (2) from the upper suction of electromagnet (7), so repeatedly, so that described flywheel is externally exported negative torque, until described bent axle (2) while being about to shut down, stops powering to each coil (8), or, until that CPU element records brake pedal by brake pedal sensor is released, when brake system stops implementing braking, stop powering to each coil (8).
2. the method for work of battery-driven car according to claim 1, it is characterized in that: described CPU element detects the position of described piston (5) by Hall element (15), to draw the spacing of described piston (5) in same cylinder body (1) and electromagnet (7), and by described coil driver, adjust the size of current in described coil (8) in real time according to this spacing size, so that described piston (5) moves past in journey at upper and lower, keep the size of the application force between piston (5) and electromagnet (7) stable.
3. the method for work of battery-driven car according to claim 1, is characterized in that: the rate of displacement that described CPU element detects each piston (5) by Hall element (15) during lower than preset value, judges that described bent axle (2) is about to shut down.
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| EP1753115A1 (en) * | 2005-08-10 | 2007-02-14 | Chuan Sheng Chen | Power engine |
| CN1996724A (en) * | 2006-11-17 | 2007-07-11 | 李震 | Piston motor |
| CN101697445A (en) * | 2009-10-26 | 2010-04-21 | 盛润泉 | magnetic piston motor |
| CN101860168A (en) * | 2010-05-13 | 2010-10-13 | 贾立进 | Electric engine |
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| KR100820204B1 (en) * | 2006-08-31 | 2008-04-07 | 현대자동차주식회사 | Variable damping apparatus of clutch disk using MR fluid |
| US7793634B2 (en) * | 2008-09-25 | 2010-09-14 | Shimon Elmaleh | Electro-magnetic internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1753115A1 (en) * | 2005-08-10 | 2007-02-14 | Chuan Sheng Chen | Power engine |
| CN1996724A (en) * | 2006-11-17 | 2007-07-11 | 李震 | Piston motor |
| CN101697445A (en) * | 2009-10-26 | 2010-04-21 | 盛润泉 | magnetic piston motor |
| CN101860168A (en) * | 2010-05-13 | 2010-10-13 | 贾立进 | Electric engine |
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