CN105730227A - Electric piston driven electric vehicle suitable for downhill braking - Google Patents
Electric piston driven electric vehicle suitable for downhill braking Download PDFInfo
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- CN105730227A CN105730227A CN201210305116.7A CN201210305116A CN105730227A CN 105730227 A CN105730227 A CN 105730227A CN 201210305116 A CN201210305116 A CN 201210305116A CN 105730227 A CN105730227 A CN 105730227A
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Abstract
The invention relates to an electric piston driven electric vehicle suitable for downhill braking. The electric vehicle comprises an electric piston motor, a flywheel connected with a crankshaft of the electric piston motor, a clutch arranged on the flywheel, a gearbox connected with the output shaft of the clutch, and a vehicle transmission system connected with the output shaft of the gearbox in a transmission manner. The ring gear on the outer edge of the flywheel is meshed with a driving gear of a starting system. The motor comprises a plurality of cylinder bodies, pistons made of permanent magnets in the cylinder bodies, and connecting rods used to connect the pistons with the crankshafts in a transmission manner. The crankshaft is arranged below each cylinder body. The upper end of the cylinder body is provided with an electromagnet which is on the same axis with the cylinder body. The coil of the electromagnet is connected with a coil driving circuit. The coil driving circuit is connected with a CPU unit. The electromagnet is arranged on a turnover mechanism. The upper dead center and the lower dead center of adjacent cylinder bodies are respectively provided with an upper travel switch and a lower travel switch connected with the CPU unit. The bottom of the cylinder body is provided with a Hall sensor connected with the CPU unit.
Description
The application is divisional application, and the application number of original application is 201110027288.8, and the applying date is: on January 25th, 2011, invention and created name: be suitable to the electrical piston driving type electric vehicle of down hill braking.
Technical field
The present invention relates to the technical field of the electric motor car that electric power piston motor drives, specifically a kind of electrical piston driving type electric vehicle being suitable to down hill braking.
Background technology
Chinese patent literature CN101860168A discloses a kind of electric motor, its conventional engines supplies, fuel feeding, aerofluxus, ignition system remove, substitute with electromagnet assembly, internal piston embeds permanent magnet, then passing through the sense of current controlling electromagnet coil to control piston upper and lower displacement in cylinder, piston externally exports power through connecting rod-crankshaft mechanism.This electric motor is applicable to the vehicles such as automobile, motorcycle.
The patent documentation of similar technique scheme, also has CN1996724A, CN1255767A, CN200990555Y etc..
Above-mentioned electric power piston-type motor of the prior art is disadvantageous in that: change the magnetic polarity of electric magnet by frequently switching the sense of current flowing through electromagnet coil, thus controlling the direction of electric magnet and the active force of piston, and then control the shift reciprocately of piston；But in actual implementation process, owing to the sense of current of electromagnet coil can not instantaneous change, cause the stability of output or the moment of torsion that cannot guarantee motor.Therefore, adopting switching to flow through the sense of current of electromagnet coil to change the magnetic polarity of electric magnet, thus controlling the technical scheme of the direction of displacement of piston, not there is practicality.
For solving above-mentioned technical problem, Chinese patent literature CN101697445A discloses a kind of motor, and it adopts magnet exciting coil alternating conductive setting up and down a pair, so that piston reciprocating displacement.But in actual implementation process, owing to the electric current of magnet exciting coil can not instantaneous change, and up and down magnet exciting coil exist in mutual crosstalk and magnetic and etc. reason, the program also cannot guarantee the output of motor or the stability of moment of torsion.
How to improve the output of electric power piston-type motor or the stability of moment of torsion, be that this area to solve the technical problem that.
Additionally, existing petrol and diesel oil motor vehicles frequently with motor direct-drive wheel, is repacked into the electric motor car adopting motor direct-drive by existing electric motor car, relatively costly, operation is loaded down with trivial details and not easily realizes.How the gasoline and diesel engine in existing petrol and diesel oil motor vehicles is directly changed into electrodynamic type, and utilizes the flywheel in original motor vehicles, clutch, change speed gear box etc. directly to drive the drive system of motor vehicles, be that this area to solve the technical problem that.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of simple in construction, is suitable to the electrical piston driving type electric vehicle of down hill braking.
In order to solve above-mentioned technical problem, the invention provides a kind of electrical piston driving type electric vehicle being suitable to down hill braking, comprising: the vehicle drive system that the output shaft of the flywheel on electric power piston motor, the bent axle that is connected in electric power piston motor, the clutch being located on flywheel, the change speed gear box being connected with the output shaft of clutch and change speed gear box is in transmission connection；The gear ring of flywheel outer rim and one starts the driving gear engagement of system；Described electric power piston motor includes: multiple cylinder bodies, be located at the piston being made up of permanent magnet in cylinder body and the connecting rod for being connected by each piston with described transmission of crankshaft；The lower section of each cylinder body is located at by bent axle；The upper end of described cylinder body is provided with and the electric magnet of cylinder body coaxial inner conductor, and magnet spool and a coil driver are connected；Described coil driver and a CPU element are connected；Described electric magnet is located on the switching mechanism controlled by CPU element；The upper and lower stop place of contiguous cylinder body is respectively equipped with the upper and lower travel switch being connected with CPU element, and the bottom of cylinder body is provided with the Hall element being connected with described CPU element；CPU element is also associated with vehicle Slope Transducer, for detecting the speed governing sensor of speed governing pedal or handlebar position.
When electric motor car starts, adopting flywheel described in described startup system drive and make described crank rotation, described CPU element detects the direction of displacement of each piston by the Hall element of each cylinder base；If the piston recorded in cylinder body displacement downward, then described CPU element provides the electric current of respective direction by described coil driver to the magnet spool above this cylinder body, so that the magnetic polarity bottom this electric magnet is identical with the magnetic polarity of top land, piston accelerates to move down because of the lower repulsion from electric magnet in this cylinder body；If the piston recorded in cylinder body displacement forward, then described CPU element provides the electric current of respective direction by described coil driver to the magnet spool above this cylinder body, so that the magnetic polarity bottom this electric magnet is contrary with the magnetic polarity of top land, piston moves in acceleration in this cylinder body because of the upper suction from electric magnet；Until each magnet spool obtain electric after, disconnect described startup system and keep the sense of current in each coil constant；Simultaneously, when described CPU element records, by described lower stroke switch, the lower dead center that the piston in a cylinder body is about to this cylinder body of arrival, CPU element controls the electric magnet above this cylinder body by described switching mechanism and rotates 180 ° around the height center line of this electric magnet, and piston now has arrived lower dead center, owing to the magnetic polarity bottom electric magnet now is contrary with the magnetic polarity of top land, piston begins in this cylinder body shift up because of the upper suction from electric magnet；When described CPU element records, by described upper stroke switch, the top dead centre that the piston in a cylinder body is about to this cylinder body of arrival, CPU element controls the electric magnet above this cylinder body by described switching mechanism and reversely rotates 180 ° around the height center line of this electric magnet, and piston now has arrived top dead centre, owing to the magnetic polarity bottom electric magnet now is identical with the magnetic polarity of top land, piston starts to bottom offset because of the lower repulsion from electric magnet；So repeatedly, so that each piston drives described crankshaft operation through corresponding connecting rod and drives described flywheel output positive-torque, flywheel drives vehicle drive system by clutch, change speed gear box, thus driving electric motor car；Meanwhile, CPU element is by speed governing sensor detection speed governing pedal or the position of hands handle, and then controls the size of current of each coil, thus realizing speed control；Recording speed governing pedal or hands time released, CPU element controls described coil driver and stops to each coil power supply.
It is on gug and the gradient is more than abrupt slope value when CPU element records Current vehicle by described vehicle Slope Transducer, record speed governing pedal or hands time released simultaneously, CPU element actuating motor retrosequence, that is: CPU element detects the direction of displacement of each piston by described Hall element, if recording piston displacement downward, then CPU element provides the electric current of respective direction by described coil driver to corresponding coil, so that the magnetic polarity bottom corresponding electric magnet is contrary with the magnetic polarity of top land, speed is moved down with what reduce piston, thus braking described bent axle；If recording piston displacement forward, then CPU element provides the electric current of respective direction by described coil driver to corresponding coil, so that the magnetic polarity bottom corresponding electric magnet is identical with the magnetic polarity of top land, to reduce the upper shifting speed of piston, thus braking described bent axle；When described bent axle does not shut down, if CPU element records this piston by described lower stroke switch is about to arrive the lower dead center of this cylinder body, then CPU element controls the height center line rotation 180 ° around this electric magnet of the electric magnet above this cylinder body by described switching mechanism, if piston now has arrived lower dead center and has started to shift up, owing to the magnetic polarity bottom electric magnet now is identical with the magnetic polarity of top land, piston bears while starting to shift up and brakes described bent axle from the lower repulsion of electric magnet；If CPU element records this piston by described upper stroke switch is about to arrive the top dead centre of this cylinder body, then CPU element controls the height center line reverse rotation 180 ° around this electric magnet of the electric magnet above this cylinder body by described switching mechanism, if piston now has arrived top dead centre and has started to bottom offset, owing to the magnetic polarity bottom electric magnet now is contrary with the magnetic polarity of top land, piston brakes described bent axle because of the upper suction from electric magnet；So repeatedly, so that described flywheel externally exports negative torque, until when the rotating speed of described flywheel is lower than a low speed value, stopping to each coil power supply；Or, until CPU element record speed governing pedal be operated or hands be rotated time, CPU element again control described flywheel output positive-torque.
The technique scheme of the present invention has the advantage that the electric power piston-type motor of (1) present invention is in the course of the work compared to existing technology, and the magnet spool sense of current remains constant；When piston is about to arrive upper and lower stop, control electric magnet and quickly rotate 180 ° around its height center line, quickly to switch the magnetic polarity of electric magnet upper and lower side, so that piston is produced positive acting power by electric magnet repeatedly, and then drive bent axle and make flywheel externally export positive-torque.The such scheme that the present invention adopts, it is to avoid the time delay brought because coil current cannot realize instantaneous reverse of prior art, and then make the output of the motor of the present invention or moment of torsion have good stability, practicality is better.(2) motor of the present invention is when starting, startup system is adopted to make described flywheel turns, CPU element detects the direction of displacement of each piston by the Hall element in each cylinder body, the electric current of respective direction is provided to each coil by coil driver with the direction of displacement according to each piston, with realize each piston by corresponding connecting rod drive bent axle continuously run, it is then turned off startup system, it is achieved thereby that the reliable startup of the motor of the present invention.(3) when in flywheel operation process, when needing flywheel externally to export negative torque, first stop to each coil power supply, then CPU element detects the direction of displacement of each piston by the Hall element in each cylinder body, and provide the electric current of respective direction by coil driver to each coil according to the direction of displacement of each piston and keep the sense of current constant, then the position according to each piston, quickly rotate the mode of 180 ° by electric magnet around its height center line and quickly switch the magnetic polarity of electric magnet upper and lower side, so that each piston is produced damping force by electric magnet repeatedly, and then brake bent axle and make described flywheel externally export negative torque and implement braking.The present invention motor when abrupt slope is descending automatically implement braking, it is ensured that driving safety.(4) Hall element in the present invention is located at the bottom center of cylinder body, and relative with the bottom surface of described piston central authorities.Due to two magnetic poles same lineal layout up and down of two magnetic poles and the electric magnet of piston, the electromagnetic signal that therefore Hall element obtains is substantially from piston base, and namely Hall element is not substantially affected by the interference of electric magnet, it is ensured that the reliability of piston position detection.When being embodied as, electromagnetic compensation and/or shielding also can be adopted 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 center line both sides of cylinder body in corresponding cylinder body, to guarantee that each piston action has good uniformity and stability with the active force on bent axle.(6) electric motor car of the present invention is primarily referred to as electric automobile, it is also possible to be battery-operated motor cycle, electro-tricycle, electric agricultural mechanical car etc..
Accompanying drawing explanation
(0013)In order to make present disclosure be more likely to be clearly understood, below according to specific embodiment and in conjunction with accompanying drawing, 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 is a kind of structural representation for controlling the electric magnet switching mechanism around its height center line rotation 180 ° and cylinder body that the electric power piston-type motor in embodiment adopts；
Fig. 3 is the circuit block diagram of the control circuit of described electric power piston-type motor；
Fig. 4 is the power train structural map of the electrical piston driving type electric vehicle in embodiment;
Fig. 5 is the structural representation of the described switching mechanism of another kind that adopts of electric power piston-type motor in embodiment and cylinder body.
Detailed description of the invention
See Fig. 1-3, the electrical piston driving type electric vehicle being suitable to down hill braking of the present embodiment, comprising: the vehicle drive system that the output shaft of the flywheel on brakes, electric power piston motor 20, the bent axle that is connected in electric power piston motor 20, the clutch 21 being located on flywheel, the change speed gear box 22 being connected with the output shaft of clutch 21 and change speed gear box 22 is in transmission connection；The gear ring of flywheel outer rim and one starts the driving gear engagement of system.This startup system adopts the of the prior art and existing matching used startup system of petrol engine.
Described vehicle drive system includes: through the output shaft of universal joint 23 with change speed gear box 22 be in transmission connection drive axle 24, through another universal joint with drive the differential mechanism 27 that axle 24 is in transmission connection and the wheel being connected with differential mechanism 27 by semiaxis 26 transmission.Wherein, driving axle 24 and differential mechanism 27 that main reducing gear 25 can be set.
Described electric power piston motor 20 includes: multiple high resistance non-magnet materials (such as aluminium alloy, the copper alloy etc.) cylinder body 1 made, the piston 5 being made up of permanent magnet being located in cylinder body 1, be located at the bent axle 2 below each cylinder body 1 and for by each piston 5 with as described in the connecting rod 3 that is in transmission connection of bent axle 2；The upper end of described cylinder body 1 is provided with and the electric magnet 7 of cylinder body 1 coaxial inner conductor, and the coil 8 of electric magnet 7 is connected with a coil driver；The height center line of electric magnet 7 is provided with rotating shaft 9, and this rotating shaft 9 is located at above cylinder body 1 by pair of bearing 4；One end one change speed gear box 11 of rotating shaft 9 is connected with motor 12 transmission；Described coil driver is connected with a CPU element with motor 12；The upper and lower stop place of contiguous cylinder body 1 is respectively equipped with the upper and lower travel 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 of described piston 5 central authorities.Hall element 15 is located in the metal tube of a non-magnet material, this metal tube and described piston 5 coaxial inner conductor.To make electromagnetic signal that Hall element 15 obtains substantially from the bottom of piston further.CPU element is also associated with vehicle Slope Transducer, for detecting the speed governing sensor of speed governing pedal or handlebar position.
(0017)Described brakes includes: brake pedal, brake pedal the transmission brake controlled and the brake pedal sensor for detecting brake pedal position being connected with described CPU element；Described upper and lower travel switch 13 and 14 adopts contact or infrared-type travel switch.The piston 5 of cylindricality is provided with wear-resisting ring.
Each piston 5 is in different travel position in described cylinder body 1, and each piston 5 is symmetrically distributed in the height center line both sides of cylinder body 1 in corresponding cylinder body 1, to guarantee that connecting rod 3 is suitable to continuous driving crank 2, and makes the torque levels that bent axle 2 exports.
When electric motor car starts, adopting flywheel described in described startup system drive, so that described bent axle 2 rotates, described CPU element detects the direction of displacement of each piston 5 by the Hall element 15 bottom each cylinder body 1；Now, if piston 5 displacement downward recorded in a cylinder body 1, then described CPU element provides the electric current of respective direction by described coil driver to the coil 8 of the electric magnet 7 above this cylinder body 1, so that the magnetic polarity bottom this electric magnet 7 is identical with the magnetic polarity at piston 5 top, piston 5 accelerates to move down in this cylinder body 1 because of the lower repulsion from electric magnet 7；Or, if piston 5 displacement forward now recorded in a cylinder body 1, then described CPU element provides the electric current of respective direction by described coil driver to the coil 8 of the electric magnet 7 above this cylinder body 1, so that the magnetic polarity bottom this electric magnet 7 is contrary with the magnetic polarity at piston 5 top, piston 5 moves in acceleration in this cylinder body 1 because of the upper suction from electric magnet 7；Until each electric magnet 7 coil 8 electric after, disconnect described startup system and keep the sense of current in each coil 8 constant；Simultaneously, when described CPU element is about to, by the piston 5 that described lower stroke switch 14 records in a cylinder body 1, the lower dead center arriving this cylinder body 1, CPU element exports a pulse signal to described motor 12, to drive this motor 12 to rotate a fixing angle by the direction set, so that motor 12 controls described rotating shaft 9 through described change speed gear box 11 rotates 180 °, and piston 5 now arrives lower dead center just or, owing to the magnetic polarity bottom electric magnet 7 now is contrary with the magnetic polarity at piston 5 top, piston 5 begins in this cylinder body 1 shift up because of the upper suction from electric magnet 7；When described CPU element records, by described upper stroke switch 13, the top dead centre that this piston 5 is about to this cylinder body 1 of arrival, CPU element exports another pulse signal to described motor 12, to drive this motor 12 opposite direction to rotate a fixing angle, so that motor 12 controls described rotating shaft 9 through described change speed gear box 11 reversely rotates 180 °, and piston 5 now arrives top dead centre just or, and piston 5 starts to bottom offset because of lower repulsion；So repeatedly, so that each piston 5 drives described bent axle 2 to operate to drive described flywheel output positive-torque through corresponding connecting rod 3, flywheel drives vehicle drive system by clutch 21, change speed gear box 22, thus driving electric motor car.
During the invariant position of the described speed governing pedal of non-releasing orientation or hands handle, described CPU element detects the position of described piston 5 by Hall element 15, to draw the spacing of the described piston 5 in same cylinder body 1 and electric magnet 7, and adjust the size of current in described coil 8 by described coil driver in real time according to this spacing size, so that described piston 5 is in upper and lower displacement process, the size keeping the active force between piston 5 and electric magnet 7 is stablized, so that the stability of the power of this motor output or moment of torsion is better.When the position change of described speed governing pedal or hands handle, described piston 5 and the spacing of electric magnet 7 in described CPU element also same cylinder body 1 adjust the size of current in each coil 8 in real time, so that the change of active force between piston 5 and electric magnet 7 is linearly, and it is corresponding with the change in location of described speed governing pedal or hands handle, and then make speed linearly change, to pass through driver comfort.
The speed governing pedal (it adopts the gas pedal of automobile of the prior art) of this electric motor car or hands are provided with, (it adopts the speed regulating handle of electric bicycle of the prior art), the speed governing sensor being connected with described CPU element, CPU element is by the position of speed governing sensor detection speed governing pedal or hands handle, and then control the size of current of each coil 8, thus realizing speed control.Speed governing sensor can be selected for pressure transducer, the degree of depth entered into according to speed governing pedal and export corresponding pressure value signal.
Described CPU element is also associated with the vehicle Slope Transducer (can adopt vehicle slope sensor disclosed in Chinese patent literature CN2703248) for detecting vehicle chassis angle；When moving ahead of this electric motor car, upwards climbing if recording Current vehicle by described vehicle Slope Transducer, and recording speed governing pedal or the invariant position of hands handle, then CPU element automatically heightens the electric current of each coil 8 accordingly according to gradient size, so that speed is stable.If recording Current vehicle by described vehicle Slope Transducer come down downwards and record speed governing pedal or the invariant position of hands handle, then CPU element automatically turns down the electric current of each coil 8 accordingly according to gradient size, so that speed is stable.
(0023)It is in gug upgrade more than abrupt slope value (being greater than 10 °) when CPU element records Current vehicle by described vehicle Slope Transducer, record speed governing pedal or hands time released simultaneously, no matter whether brake pedal is operated, CPU element actuating motor retrosequence, it may be assumed that
CPU element detects the direction of displacement of each piston 5 by described Hall element 15, if recording piston 5 displacement downward, then CPU element provides the electric current of respective direction by described coil driver to corresponding coil 8, so that the magnetic polarity bottom corresponding electric magnet 7 is contrary with the magnetic polarity at piston 5 top, speed is moved down with what reduce piston 5, thus braking described bent axle 2, it may be assumed that make described flywheel externally export negative torque；If recording piston 5 displacement forward, then CPU element provides the electric current of respective direction by described coil driver to corresponding coil 8, so that the magnetic polarity bottom corresponding electric magnet 7 is identical with the magnetic polarity at piston 5 top, to reduce the upper shifting speed of piston 5, thus braking described bent axle 2.
When described bent axle 2 does not shut down, if CPU element records this piston 5 by described lower stroke switch 14 is about to arrive the lower dead center of this cylinder body 1, then CPU element exports a pulse signal to described motor 12, to drive this motor 12 to rotate a fixing angle by the direction set, so that motor 12 controls described rotating shaft 9 through described change speed gear box 11 rotates 180 °, if piston now 5 just or arrives lower dead center and starts to shift up, then owing to the magnetic polarity bottom electric magnet 7 now is identical with the magnetic polarity at piston 5 top, piston 5 bears while starting to shift up and brakes described bent axle 2 from the lower repulsion of electric magnet 7；If CPU element records this piston 5 by described upper stroke switch 13 is about to arrive the top dead centre of this cylinder body 1, then CPU element exports another pulse signal to described motor 12, to drive this motor 12 to rotate backward a fixing angle, so that motor 12 controls described rotating shaft 9 through described change speed gear box 11 reversely rotates 180 °, if piston now 5 just or arrives top dead centre and starts to bottom offset, then owing to the magnetic polarity bottom electric magnet 7 now is contrary with the magnetic polarity at piston 5 top, piston 5 brakes described bent axle 2 because of the upper suction from electric magnet 7；So repeatedly, so that described flywheel externally exports negative torque, until when speed is brought down below low speed value (such as a 15Km/h), stopping powering to each coil 8；Or, again depressed or hands is when being rotated until CPU element records speed governing pedal by speed governing sensor, now CPU element again controls described flywheel and normally exports positive-torque.
The rate of displacement that described CPU element detects each piston 5 by Hall element 15 judges whether described bent axle 2 shuts down.
When externally exporting braking torque by described bent axle 2, described coil driver is pulse current to the electric current that described coil 8 provides.Described coil 8 side is 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 linearly or nonlinearly negative correlation, to prevent coil 8 overheated.
In electric motor car driving process, if CPU element records speed lower than 30Km/h by vehicle speed sensor, and speed governing pedal or hands are time released, then CPU element startup idling slides program.Namely CPU element controls size of current in each coil 8, so that speed is stable at 20Km/h.
The brakes of this electric motor car adopts the brakes of the vehicles equipped with gasoline engine of prior art.
When speed is higher, as more than 40Km/h, CPU element records brake pedal by brake pedal sensor and is operated, namely when brakes implements braking, CPU element is actuating motor retrosequence also, until when described bent axle 2 is about to shut down, stopping powering to each coil 8；Or, until CPU element to record brake pedal by brake pedal sensor released, when namely brakes stops implementing braking, stop powering to each coil 8.
Fig. 5 is the structural representation of another kind of described switching mechanism, electric magnet 7 is located on a little gear 16, and the central shaft of this little gear 16 is located on the central point of electric magnet 7, this little gear 16 is meshed with a gear wheel 17, and this gear wheel 17 is connected with the transmission of described change speed gear box 11；During work, CPU element exports a pulse signal to described motor 12, to drive this motor 12 to rotate a fixing angle by the direction set, so that motor 12 controls described little gear 16 180 ° clockwise or counterclockwise through described change speed gear box 11, gear wheel 17.
Obviously, above-described embodiment is only for clearly demonstrating example of the present invention, 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 without also cannot all of embodiment be given exhaustive.And the apparent change that these spirit belonging to the present invention are extended out or variation are still among protection scope of the present invention.
Claims (1)
1. the electrical piston driving type electric vehicle being suitable to down hill braking, it is characterised in that including: the vehicle drive system that the output shaft of flywheel on electric power piston motor (20), the bent axle being connected in electric power piston motor (20), the change speed gear box (22) that the clutch (21) being located on flywheel is connected with the output shaft of clutch (21) and change speed gear box (22) is in transmission connection；The gear ring of described flywheel outer rim and one starts the driving gear engagement of system；
Described electric power piston motor (20) including: multiple cylinder bodies (1), the piston (5) being made up of permanent magnet being located in cylinder body (1) and the connecting rod (3) for each piston (5) and described bent axle (2) being in transmission connection；The lower section of each cylinder body (1) is located at by bent axle (2)；
The upper end of described cylinder body (1) is provided with the electric magnet (7) with cylinder body (1) coaxial inner conductor, and the coil (8) of electric magnet (7) is connected with a coil driver, and this coil driver and a CPU element are connected；Described electric magnet (7) is located on the switching mechanism controlled by CPU element；
The upper and lower stop place of contiguous cylinder body (1) is respectively equipped with the upper and lower travel 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；CPU element is also associated with vehicle Slope Transducer, for detecting the speed governing sensor of speed governing pedal or handlebar position；
When electric motor car starts, adopting flywheel described in described startup system drive and make described bent axle (2) rotate, described CPU element detects the direction of displacement of each piston (5) by the Hall element (15) of each cylinder body (1) bottom；
If piston (5) displacement downward recorded in a cylinder body (1), then described CPU element provides the electric current of respective direction by described coil driver to the coil (8) of the electric magnet (7) of this cylinder body (1) top, so that the magnetic polarity of this electric magnet (7) bottom is identical with the magnetic polarity at piston (5) top, piston (5) accelerates to move down in this cylinder body (1) because of the lower repulsion from electric magnet (7)；
If piston (5) displacement forward recorded in a cylinder body (1), then described CPU element provides the electric current of respective direction by described coil driver to the coil (8) of the electric magnet (7) of this cylinder body (1) top, so that the magnetic polarity of this electric magnet (7) bottom is contrary with the magnetic polarity at piston (5) top, piston (5) accelerates upper shifting because of the upper suction from electric magnet (7) in this cylinder body (1)；
Until each electric magnet (7) coil (8) electric after, disconnect described startup system and keep the sense of current in each coil (8) constant；
Simultaneously, when described CPU element records, by described lower stroke switch (14), the lower dead center that the piston (5) in a cylinder body (1) is about to this cylinder body of arrival (1), CPU element controls the electric magnet (7) of this cylinder body (1) top by described switching mechanism and rotates 180 ° around the height center line of this electric magnet (7), and piston (5) now has arrived lower dead center, owing to the magnetic polarity of electric magnet (7) bottom now is contrary with the magnetic polarity at piston (5) top, piston (5) begins in this cylinder body (1) shift up because of the upper suction from electric magnet (7)；When described CPU element records, by described upper stroke switch (13), the top dead centre that the piston (5) in a cylinder body (1) is about to this cylinder body of arrival (1), CPU element controls the electric magnet (7) of this cylinder body (1) top by described switching mechanism and reversely rotates 180 ° around the height center line of this electric magnet (7), and piston (5) now has arrived top dead centre, owing to the magnetic polarity of electric magnet (7) bottom now is identical with the magnetic polarity at piston (5) top, piston (5) starts to bottom offset because of the lower repulsion from electric magnet (7)；So repeatedly, so that each piston (5) drives described bent axle (2) to operate through corresponding connecting rod (3) and drives described flywheel output positive-torque, flywheel drives vehicle drive system by clutch (21), change speed gear box (22), thus driving electric motor car；
Meanwhile, CPU element is by speed governing sensor detection speed governing pedal or the position of hands handle, and then controls the size of current of each coil (8), thus realizing speed control；Recording speed governing pedal or hands time released, CPU element controls described coil driver and stops powering to each coil (8)；
It is on gug and the gradient is more than abrupt slope value when CPU element records Current vehicle by described vehicle Slope Transducer, records speed governing pedal or hands time released, CPU element actuating motor retrosequence simultaneously, it may be assumed that
CPU element detects the direction of displacement of each piston (5) by described Hall element (15), if recording a piston (5) displacement downward, then CPU element provides the electric current of respective direction by described coil driver to corresponding coil (8), so that the magnetic polarity of corresponding electric magnet (7) bottom is contrary with the magnetic polarity at piston (5) top, speed is moved down, thus braking described bent axle (2) with what reduce piston (5)；If recording a piston (5) displacement forward, then CPU element provides the electric current of respective direction by described coil driver to corresponding coil (8), so that the magnetic polarity of corresponding electric magnet (7) bottom is identical with the magnetic polarity at piston (5) top, to reduce the upper shifting speed of piston (5), thus braking described bent axle (2)；
When described bent axle (2) does not shut down, if CPU element records this piston (5) by described lower stroke switch (14) is about to arrive the lower dead center of this cylinder body (1), then CPU element controls the electric magnet (7) the height center line rotation 180 ° around this electric magnet (7) of this cylinder body (1) top by described switching mechanism, if piston now (5) has arrived lower dead center and has started to shift up, owing to the magnetic polarity of electric magnet (7) bottom now is identical with the magnetic polarity at piston (5) top, piston (5) bears while starting to shift up brakes described bent axle (2) from the lower repulsion of electric magnet (7)；If CPU element records this piston (5) by described upper stroke switch (13) is about to arrive the top dead centre of this cylinder body (1), then CPU element controls the electric magnet (7) the height center line reverse rotation 180 ° around this electric magnet (7) of this cylinder body (1) top by described switching mechanism, if piston now (5) has arrived top dead centre and has started to bottom offset, owing to the magnetic polarity of electric magnet (7) bottom now is contrary with the magnetic polarity at piston (5) top, piston (5) brakes described bent axle (2) because of the upper suction from electric magnet (7)；So repeatedly, so that described flywheel externally exports negative torque, until when the rotating speed of described flywheel is lower than a low speed value, stopping powering to each coil (8)；Or, until CPU element record speed governing pedal be operated or hands be rotated time, CPU element again control described flywheel output positive-torque；
Described Hall element (15) is located at the bottom center of cylinder body (1), and relative with the bottom surface of described piston (5) central authorities；
Described Hall element (15) is located in the metal tube of a non-magnet material, this metal tube and described piston (5) coaxial inner conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305116.7A CN105730227B (en) | 2011-01-25 | 2011-01-25 | Electrical piston driving type electric vehicle suitable for down hill braking |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305116.7A CN105730227B (en) | 2011-01-25 | 2011-01-25 | Electrical piston driving type electric vehicle suitable for down hill braking |
| CN2011100272888A CN102114772B (en) | 2011-01-25 | 2011-01-25 | Electric piston-driven electric vehicle suitable for downhill braking |
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| CN2011100272888A Division CN102114772B (en) | 2011-01-25 | 2011-01-25 | Electric piston-driven electric vehicle suitable for downhill braking |
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| CN105730227A true CN105730227A (en) | 2016-07-06 |
| CN105730227B CN105730227B (en) | 2017-12-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110065387A (en) * | 2019-04-26 | 2019-07-30 | 湖北启源科技有限公司 | A kind of electric piston drive type electric vehicle and its working method |
| CN110191827A (en) * | 2017-01-23 | 2019-08-30 | 沃尔沃卡车集团 | For controlling the method and system of vehicle during descending starts |
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| US6541875B1 (en) * | 2000-05-17 | 2003-04-01 | Caterpillar Inc | Free piston engine with electrical power output |
| CN2817200Y (en) * | 2005-08-10 | 2006-09-13 | 陈传生 | Electric engine |
| CN1996724A (en) * | 2006-11-17 | 2007-07-11 | 李震 | Piston motor |
| CN200990555Y (en) * | 2006-08-29 | 2007-12-12 | 孙蘅荪 | Piston type motor |
| CN101860168A (en) * | 2010-05-13 | 2010-10-13 | 贾立进 | Electric engine |
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| CN1255767A (en) * | 1999-12-13 | 2000-06-07 | 江德明 | Piston-type reciprocating motor |
| US6541875B1 (en) * | 2000-05-17 | 2003-04-01 | Caterpillar Inc | Free piston engine with electrical power output |
| CN2817200Y (en) * | 2005-08-10 | 2006-09-13 | 陈传生 | Electric engine |
| CN200990555Y (en) * | 2006-08-29 | 2007-12-12 | 孙蘅荪 | Piston type motor |
| CN1996724A (en) * | 2006-11-17 | 2007-07-11 | 李震 | Piston motor |
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| CN110191827A (en) * | 2017-01-23 | 2019-08-30 | 沃尔沃卡车集团 | For controlling the method and system of vehicle during descending starts |
| US11001261B2 (en) | 2017-01-23 | 2021-05-11 | Volvo Truck Corporation | Method and a system for controlling a vehicle during a downhill start |
| CN110191827B (en) * | 2017-01-23 | 2021-08-27 | 沃尔沃卡车集团 | Method and system for controlling a vehicle during a downhill start |
| CN110065387A (en) * | 2019-04-26 | 2019-07-30 | 湖北启源科技有限公司 | A kind of electric piston drive type electric vehicle and its working method |
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| CN105730227B (en) | 2017-12-19 |
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