CN102806844B - Electric vehicle suitable for downhill braking - Google Patents
Electric vehicle suitable for downhill braking Download PDFInfo
- Publication number
- CN102806844B CN102806844B CN201210306807.9A CN201210306807A CN102806844B CN 102806844 B CN102806844 B CN 102806844B CN 201210306807 A CN201210306807 A CN 201210306807A CN 102806844 B CN102806844 B CN 102806844B
- Authority
- CN
- China
- Prior art keywords
- piston
- electromagnet
- cylinder body
- cpu element
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims description 26
- 230000008859 change Effects 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 2
- 230000007306 turnover Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention relates to an electric vehicle suitable for downhill braking. The electric vehicle comprises an electric piston motor, a flywheel connected to a crankshaft of the electric piston motor, a clutch arranged on the flywheel, a speed changing box connected with an output shaft of the clutch and a vehicle transmission system in transmission connection with the speed changing box, wherein gear rings at the periphery of the flywheel are meshed with a driving gear of a starting system; the motor comprises a plurality of cylinders, pistons which are arranged in the cylinders and made of permanent magnets and connection rods by which the pistons are in transmission connection with the crankshaft; the crankshaft is arranged below the cylinders; the upper ends of the cylinders are provided with electromagnets which have the same axis as the cylinders, and coils of the electromagnets are connected with a coil driving circuit; the coil driving circuit is connected with a central processing unit (CPU); the electromagnets are arranged on a turnover mechanism; an upper travel switch and a lower travel switch which are connected with the CPU are respectively arranged at positions near an upper dead center and a lower dead center of the cylinders, and a Hall sensor connected with the CPU is arranged at the bottoms of the cylinders.
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: the electrical piston driving type electric vehicle that is suitable for downhill 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 battery-driven car that is suitable for downhill braking.
Background technology
Chinese patent literature CN101860168A discloses a kind of electric motor, its conventional engines air feed, fuel feeding, exhaust, ignition system remove, alternative with electromagnet assembly, internal piston embeds permanent magnet, then carry out control plunger upper and lower displacement in cylinder by the direction of current of controlling magnet coil, 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: change the magnetic polarity of electromagnet by the flow through direction of current of magnet coil of frequent switching, 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, adopt the magnetic polarity of switching the direction of current of magnet coil of flowing through and change electromagnet, thereby the technical scheme of the sense of displacement of control plunger do 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 is to provide a kind of simple in structure, battery-driven car of being suitable for downhill braking.
In order to solve the problems of the technologies described above, the invention provides a kind of electrical piston driving type electric vehicle that is suitable for downhill braking, it comprises: 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 engages with a driven wheel that starts system; Described electric power piston motor comprises: multiple cylinder bodies, be located at the piston of being made up of 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; Described coil driver is connected with a CPU element; Described electromagnet is located on the switching mechanism by CPU element control; 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; CPU element is also connected with vehicle Slope Transducer, speed governing sensor for detection of speed governing pedal or handgrip position.
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, in the time that 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 the height line of centers Rotate 180 ° around this electromagnet by the electromagnet above this cylinder body of described switching mechanism control, 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; In the time that 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, the electromagnet of CPU element by this cylinder body of described switching mechanism control top 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; Meanwhile, CPU element detects the position of speed governing pedal or handgrip by speed governing sensor, and then controls the size of current of each coil, thereby realizes speed of a motor vehicle control; Recording speed governing pedal or handgrip when released, coil driver stops to each coil power supply described in CPU element control.
When CPU element by described vehicle Slope Transducer record when vehicle in front on down ramp and the gradient be greater than abrupt slope value, record speed governing pedal or handgrip when released simultaneously, CPU element actuating motor retrosequence, that is: CPU element detects the sense of displacement of each piston by described Hall element, 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, in the time that described bent axle does not shut down, if CPU element records this piston by the bottom dead point that arrives this cylinder body by described lower stroke switch, the electromagnet of CPU element by this cylinder body of described switching mechanism control top is around the height line of centers Rotate 180 ° of this electromagnet, 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 this piston by the top dead point that arrives this cylinder body by described upper stroke switch, the electromagnet of CPU element by this cylinder body of described switching mechanism control top 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 the rotating speed of described flywheel during lower than a low speed value, stops to each coil power supply, or until CPU element records when speed governing pedal is operated or handgrip is rotated, CPU element is controlled described flywheel output positive-torque again.
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; In the time that 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 produce positive acting power to piston, 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 in the time 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) when 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 the electric current of respective direction is provided and keeps direction of current constant to each coil by coil driver according to the sense of displacement of each piston, then according to the position of each piston, switch fast the magnetic polarity of electromagnet upper and lower side around the mode of 180 ° of its height line of centers fast rotational by electromagnet, thereby make electromagnet repeatedly produce dumping force to each piston, and then brake bent axle and make described flywheel externally export negative torque and implement braking.When electrical motor of the present invention is descending on abrupt slope, automatically implement braking, guaranteed driving safety.(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 same lineal layout up and down of electromagnet, the electromagnetic signal that therefore 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.When concrete enforcement, also can adopt electromagnetic compensation and/or the shielding shielding measure except 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.
Brief description of the drawings
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.
Detailed description of the invention
See Fig. 1-3, the electrical piston driving type electric vehicle that is suitable for downhill 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 engages with a driven wheel that starts 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: cylinder body 1 that multiple high resistance non-magnet materials (as: aluminum alloy, copper alloy etc.) are made, be located at the piston of being made up of permanent magnet 5 in cylinder body 1, be located at the bent axle 2 of each cylinder body 1 below and the connecting rod 3 for each piston 5 and described bent axle 2 are in transmission connection; 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 height line of centers of electromagnet 7 is provided with 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.CPU element is also connected with vehicle Slope Transducer, speed governing sensor for detection of speed governing pedal or handgrip position.
(0017)described brake system comprises: brake pedal, by the drg of brake pedal transmission control 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.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 line of centers both sides of cylinder body 1 in corresponding cylinder body 1, and to guarantee that connecting rod 3 is suitable for continuous driving crank 2, and the moment of torsion that bent axle 2 is exported is stable.
When battery-driven car starts, 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 piston 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, in the time that described CPU element is recorded piston in a cylinder body 15 and is about to arrive the bottom dead point of this cylinder body 1 by described lower stroke switch 14, CPU element is exported an impulse singla to described stepping motor 12, 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 5 now 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, in the time that 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 5 now 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.
When the described speed governing pedal of non-releasing orientation or the invariant position of handgrip, 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 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 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.In the time that the position of described speed governing pedal or handgrip changes, the described CPU element also described piston 5 in same cylinder body 1 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 or handgrip, and then make the speed of a motor vehicle be linear change, to pass through driver comfort.
Speed governing pedal (it adopts the Das Gaspedal of automobile of the prior art) or the handgrip (it adopts the speed regulating handle of Electrical Bicycle of the prior art) of this battery-driven car are provided with the speed governing sensor being connected with described CPU element, CPU element detects the position of speed governing pedal or handgrip by speed governing sensor, and then control the size of current of each coil 8, thereby realize speed of a motor vehicle control.Speed governing 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 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; In the time of 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 or handgrip, 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 or handgrip 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.
For example, when CPU element is recorded and is greater than abrupt slope value (being greater than 10 °) in down ramp upgrade when vehicle in front by described vehicle Slope Transducer, record speed governing pedal or handgrip when released simultaneously, no matter whether brake pedal is operated, CPU element actuating motor retrosequence, that is:
CPU element detects the sense of displacement of each piston 5 by described Hall element 15, 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.
In the time that described bent axle 2 does not shut down, if CPU element records this piston 5 by the bottom dead point that arrives this cylinder body 1 by described lower stroke switch 14, CPU element is exported an impulse singla to described stepping motor 12, 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 starting to brake described bent axle 2 to bearing in top offset from the lower repulsion of electromagnet 7, if CPU element records this piston 5 by the top dead point that arrives 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 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 while being brought down below a low speed value (as 15Km/h), stops powering to each coil 8, or until CPU element is while recording by speed governing sensor that speed governing pedal is depressed again or handgrip is rotated, now CPU element is again controlled described flywheel and is normally exported 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.
In the time 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, and speed governing pedal or handgrip be when released, and CPU element starts idling and slides program.Be size of current in the each coil 8 of CPU element control, 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 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.
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; When work, CPU element is exported an impulse singla to described stepping motor 12, 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 without also giving exhaustive to all embodiments.And these belong to apparent variation that spirit of the present invention extended out or variation still among protection scope of the present invention.
Claims (1)
1. be suitable for a battery-driven car for downhill braking, it is characterized in that comprising: 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 engages with a driven wheel that starts system;
Described electric power piston motor (20) comprising: multiple cylinder bodies (1), be located at the piston of being made up of permanent magnet (5) in cylinder body (1) and the connecting rod (3) for each piston (5) and described bent axle (2) are in transmission connection; 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; Described electromagnet (7) is located on the switching mechanism by CPU element control;
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; CPU element is also connected with vehicle Slope Transducer, speed governing sensor for detection of speed governing pedal or handgrip position;
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, in the time that 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 the height line of centers Rotate 180 ° around this electromagnet (7) by the electromagnet (7) above described this cylinder body of switching mechanism control (1), and piston (5) has now arrived bottom dead point, because the magnetic polarity of electromagnet (7) bottom is now contrary with the magnetic polarity at piston (5) top, piston (5) is because starting in this cylinder body (1) to top offset from the upper suction of electromagnet (7), in the time that 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), the electromagnet (7) of CPU element by described this cylinder body of switching mechanism control (1) top is around 180 ° of the height line of centers contrarotations of this electromagnet (7), and piston (5) has now 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) is because starting to bottom offset from the lower repulsion of 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,
Meanwhile, CPU element detects the position of speed governing pedal or handgrip by speed governing sensor, and then controls the size of current of each coil (8), thereby realizes speed of a motor vehicle control; Recording speed governing pedal or handgrip when released, coil driver stops powering to each coil (8) described in CPU element control;
When CPU element by described vehicle Slope Transducer record when vehicle in front on down ramp and the gradient be greater than abrupt slope value, record speed governing pedal or handgrip when released simultaneously, CPU element actuating motor retrosequence, that is:
CPU element detects the sense of displacement of each piston (5) by described Hall element (15), 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);
In the time that described bent axle (2) does not shut down, if CPU element records this piston (5) by the bottom dead point that arrives this cylinder body (1) by described lower stroke switch (14), the electromagnet (7) of CPU element by described this cylinder body of switching mechanism control (1) top is around the height line of centers Rotate 180 ° of this electromagnet (7), if piston now (5) has arrived bottom dead point and has started to top offset, because the magnetic polarity of electromagnet (7) bottom is now identical with the magnetic polarity at piston (5) top, piston (5) is starting to brake described bent axle (2) to bearing in top offset from the lower repulsion of electromagnet (7), if CPU element records this piston (5) by the top dead point that arrives this cylinder body (1) by described upper stroke switch (13), the electromagnet (7) of CPU element by described this cylinder body of switching mechanism control (1) top 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 of electromagnet (7) bottom 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 the rotating speed of described flywheel during lower than a low speed value, stops powering to each coil (8), or until CPU element records when speed governing pedal is operated or handgrip is rotated, CPU element is controlled described flywheel output positive-torque again,
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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210306807.9A CN102806844B (en) | 2011-01-25 | 2011-01-25 | Electric vehicle suitable for downhill braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210306807.9A CN102806844B (en) | 2011-01-25 | 2011-01-25 | Electric vehicle suitable for downhill braking |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100272888A Division CN102114772B (en) | 2011-01-25 | 2011-01-25 | Electric piston-driven electric vehicle suitable for downhill braking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102806844A CN102806844A (en) | 2012-12-05 |
| CN102806844B true CN102806844B (en) | 2014-12-10 |
Family
ID=47230771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210306807.9A Expired - Fee Related CN102806844B (en) | 2011-01-25 | 2011-01-25 | Electric vehicle suitable for downhill braking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102806844B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406642A (en) * | 2015-12-24 | 2016-03-16 | 江苏理工学院 | Electromagnetic piston type gear transmission electromotor |
| 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 |
| CN113051994B (en) * | 2020-11-18 | 2021-12-17 | 庄景江 | Real-time lifting system of grip ability based on environmental monitoring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101860168A (en) * | 2010-05-13 | 2010-10-13 | 贾立进 | Electric engine |
-
2011
- 2011-01-25 CN CN201210306807.9A patent/CN102806844B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101860168A (en) * | 2010-05-13 | 2010-10-13 | 贾立进 | Electric engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102806844A (en) | 2012-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020121815A1 (en) | Magnetically powered reciprocating engine | |
| CN102806844B (en) | Electric vehicle suitable for downhill braking | |
| CN102673389B (en) | Electric power piston driving type electric vehicle and working method thereof | |
| CN102114772B (en) | Electric piston-driven electric vehicle suitable for downhill braking | |
| CN102774280B (en) | Power piston drive electric vehicle and its downhill braking method | |
| CN102611273B (en) | Electric piston type motor suitable for outputting positive and negative torque | |
| CN102806843B (en) | Electric vehicle | |
| CN105730227B (en) | Electrical piston driving type electric vehicle suitable for down hill braking | |
| CN102120422B (en) | Electric piston driven type electromobile suitable for electric braking | |
| CN102673408B (en) | Power piston drive-type electrocar suitable for electric brake and working method of electrocar | |
| CN102120419B (en) | Electric piston driven type electromobile | |
| CN201989617U (en) | Control system of electrical piston driving type electric vehicle | |
| EP3640080B1 (en) | Vehicle | |
| CN102075059B (en) | Electric power piston type motor | |
| CN100529480C (en) | Internal-combustion engines vehicle power intelligence control system and control method thereof | |
| CN201907408U (en) | Electric power piston driving type electric motor car | |
| CN109779749A (en) | A kind of minimum cylinder volume variable control system of engine | |
| CN102594080B (en) | Electric piston type motor | |
| CN102594081B (en) | Power piston type motor with better continuity and stability in power/torque output | |
| CN201937434U (en) | Electric piston type electric motor | |
| CN102075060B (en) | Electric piston motor suitable for outputting positive torque and negative torque | |
| CN201937437U (en) | Gear control mechanism for overturn of electromagnets of electric piston type motor | |
| CN201956955U (en) | Control system of power piston type motor | |
| CN201937435U (en) | Electromagnet turnover control mechanism of electric power piston-type motor | |
| CN110065387A (en) | A kind of electric piston drive type electric vehicle and its working method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 213015 Changzhou Province in the Clock Tower District, Jiangsu, Wu Road, No. 1801 Applicant after: Jiangsu University of Technology Address before: 213000 Changzhou Province in the Clock Tower District, Jiangsu, Wu Road, No. 1801 Applicant before: Jiangsu Teachers University of Technology |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: JIANGSU TECHNOLOGY NORMAL COLLEGE TO: JIANGSU UNIVERSITY OF TECHNOLOGY |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20200125 |