CN102774280B - Power piston drive electric vehicle and its downhill braking method - Google Patents
Power piston drive electric vehicle and its downhill braking method Download PDFInfo
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Abstract
The invention relates to a downhill braking method of a power piston drive electric vehicle. The electric vehicle comprises a power piston motor, a flywheel connected with the crank shaft in the power piston motor, a clutch arranged on the flywheel, a gear box connected with an output shaft of the clutch, and a vehicle drive system in transmission connection with an output shaft of the gear box, wherein the gear ring at the outer edge of the flywheel is meshed with the drive gear of a starting system; the motor comprises a plurality of cylinders, pistons made of permanent magnets and arranged in the cylinders, and connecting rods used for enabling all the pistons to be in transmission connection with the crank shaft; the crank shaft is arranged below each cylinder; the upper end of the cylinder is provided with an electromagnet having the same axial lead with the cylinder; the coil of the electromagnet is connected with a coil drive circuit; the coil drive circuit is connected with a CPU(central processing unit); the electromagnet is arranged on a turning mechanism; the upper and lower dead centers of adjacent cylinders are respectively provided with an upper position switch and a lower position switch which are connected with the CPU; and a Hall sensor which is connected with the CPU is arranged at the bottom of the cylinder.
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 being suitable for downhill braking.
Technical field
The present invention relates to the technical field of the battery-driven car that electric power piston motor drives, a kind of specifically downhill braking method of electrical piston driving type electric vehicle.
Background technology
Chinese patent literature CN101860168A discloses a kind of electric motor, its conventional engines air feed, fuel feeding, exhaust, ignition system remove, substitute with electromagnet assembly, internal piston embeds permanent magnet, then the direction of current by controlling magnet coil carrys out control plunger upper and lower displacement in cylinder, and piston is through the external outputting power of connecting rod-crankshaft mechanism.This electric motor is applicable to the vehicle such as automobile, motor bike.
The patent documentation of similar technique scheme, also has CN1996724A, CN1255767A, CN200990555Y etc.
The weak point of above-mentioned electric power piston-type motor of the prior art is: by frequently switching the magnetic polarity that the direction of current flowing through magnet coil changes electromagnet, thus 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 direction of current switching and flow through magnet coil to change the magnetic polarity of electromagnet, thus the technical scheme of the sense of displacement of control plunger, not there is practicality.
For solving the problems of the technologies described above, Chinese patent literature CN101697445A discloses a kind of electrical motor, and it adopts a pair excitation coil alternating conductive setting up and down, to make piston reciprocating displacement.But in actual implementation process, because the electric current of excitation coil can not instantaneously change, and up and down excitation coil to exist in mutual crosstalk and magnetic and etc. reason, the program also cannot guarantee 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, is repacked into by existing petrol and diesel oil self-propelled vehicle and adopts the battery-driven car of motor direct-drive, and cost is higher, operation is loaded down with trivial details and not easily realize.How directly changing the gasoline and diesel engine in existing petrol and diesel oil self-propelled vehicle into electrodynamic type, and utilize the driving system of the Direct driver self-propelled vehicle such as flywheel, power-transfer clutch, change speed gear box in original self-propelled vehicle, 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 the electrical piston driving type electric vehicle that a kind of structure is simple, be suitable for downhill braking.
In order to solve the problems of the technologies described above, the invention provides a kind of downhill braking method of electrical piston driving type electric vehicle, this electrical piston driving type electric vehicle comprises: electric power piston motor, be connected in electric power piston motor bent axle on flywheel, the power-transfer clutch be located on flywheel, the change speed gear box be 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 the driven wheel of a start up system; Described electric power piston motor comprises: multiple cylinder body, be located at the piston be made up of permanent magnet in cylinder body and the connecting rod for being connected with described transmission of crankshaft by each piston; The below of each cylinder body is located at by bent axle; 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 that controlled by CPU element; The upper and lower stop place of contiguous cylinder body is respectively equipped with the upper and lower travel switch be connected with CPU element, and the bottom of cylinder body is provided with the Hall element be connected with described CPU element; CPU element is also connected with vehicle Slope Transducer, for detecting the speed governing sensor of speed governing pedal or handlebar position.
The downhill braking method of above-mentioned electrical piston driving type electric vehicle, comprise: when battery-driven car starts, adopt described start up system to drive described flywheel and make described crank rotation, 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, then described CPU element provides the electric current of respective direction by the magnet spool of described coil driver above this cylinder body, to make the magnetic polarity bottom this electromagnet 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, then described CPU element provides the electric current of respective direction by the magnet spool of described coil driver above this cylinder body, to make the magnetic polarity bottom this electromagnet contrary with the magnetic polarity of piston head, piston moves on accelerating in this cylinder body because of the upper suction from electromagnet; Until each magnet spool obtain electric after, disconnect described start up system and keep the direction of current in each coil constant; Simultaneously, when described CPU element is about to by the piston that described lower stroke switch records in a cylinder body bottom dead point arriving this cylinder body, CPU element controls the electromagnet above this cylinder body around the height center line of this electromagnet by described switching mechanism and rotates 180 °, and piston now arrives bottom dead point, because the magnetic polarity bottom electromagnet is now contrary with the magnetic polarity of piston head, piston starts in this cylinder body to top offset because of the upper suction from electromagnet; When described CPU element is about to by the piston that described upper stroke switch records in a cylinder body top dead point arriving this cylinder body, CPU element controls the height center line contrarotation 180 ° of the electromagnet above this cylinder body around this electromagnet by described switching mechanism, and piston now arrives top dead point, because the magnetic polarity bottom electromagnet is now identical with the magnetic polarity of piston head, piston starts to bottom offset because of the lower repulsion from electromagnet; So repeatedly, thus make each piston drive described crankshaft operation through corresponding connecting rod and drive described flywheel to export positive-torque, flywheel drives vehicle drive system by power-transfer clutch, change speed gear box, thus drives battery-driven car; Meanwhile, CPU element detects the position of speed governing pedal or hand handle by speed governing sensor, and then controls the size of current of each coil, thus realizes speed of a motor vehicle control; Recording speed governing pedal or hand time released, CPU element controls described coil driver and stops to each coil power supply.To be on down ramp and the gradient is greater than abrupt slope value when CPU element records Current vehicle by described vehicle Slope Transducer, record speed governing pedal or hand time 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, then CPU element provides the electric current of respective direction to the coil of correspondence by described coil driver, to make the magnetic polarity bottom corresponding electromagnet contrary with the magnetic polarity of piston head, speed is moved down with what reduce piston, thus brake described bent axle, if record piston displacement forward, then CPU element provides the electric current of respective direction to the coil of correspondence by described coil driver, to make the magnetic polarity bottom corresponding electromagnet identical with the magnetic polarity of piston head, with reduce piston on move speed, thus brake described bent axle, when described bent axle does not shut down, if CPU element records by described lower stroke switch the bottom dead point that this piston is about to arrive this cylinder body, then CPU element controls the electromagnet above this cylinder body around the height center line of this electromagnet by described switching mechanism and rotates 180 °, if piston now has arrived bottom dead point and has started to top offset, because the magnetic polarity bottom electromagnet is now identical with the magnetic polarity of piston head, piston brakes described bent axle starting to bear the lower repulsion from electromagnet while top offset, if CPU element records by described upper stroke switch the top dead point that this piston is about to arrive this cylinder body, then CPU element controls the height center line contrarotation 180 ° of the electromagnet above this cylinder body around this electromagnet by described switching mechanism, if piston now has arrived top dead point and has started to bottom offset, because the magnetic polarity bottom electromagnet is now contrary with the magnetic polarity of piston head, piston brakes described bent axle because of the upper suction from electromagnet, so repeatedly, to make described flywheel externally export negative torque, until when the rotating speed of described flywheel is lower than a low speed value, stop to each coil power supply, or, until CPU element record speed governing pedal be operated or hand by rotation time, CPU element again control described flywheel export positive-torque.
a kind of applicationthe electrical piston driving type electric vehicle of above-mentioned downhill braking method, wherein, each piston is symmetrically distributed in the height center line both sides of cylinder body in corresponding cylinder body; Described Hall element is located at the bottom center of cylinder body, and relative with the bottom surface central authorities of described piston.
Technique scheme of the present invention has the following advantages compared to existing technology: in the course of the work, magnet spool direction of current remains constant to (1) electric power piston-type motor of the present invention; When piston is about to arrive upper and lower stop, control electromagnet around its height center line fast rotational 180 °, to switch the magnetic polarity of electromagnet upper and lower side fast, thus electromagnet is made repeatedly to produce positive acting power to piston, and then driving crank make flywheel externally export positive-torque.The such scheme that the present invention adopts, avoid the time delay brought because coil current cannot realize instantaneous reverse of prior art, and then make the horsepower output of electrical motor of the present invention or moment of torsion have good stability, practicality is better.(2) electrical motor of the present invention is when starting, start up system is adopted to make described flywheel turns, CPU element detects the sense of displacement of each piston by the Hall element in each cylinder body, to be provided the electric current of respective direction to each coil by coil driver according to the sense of displacement of each piston, operated continuously by corresponding connecting rod driving crank to realize each piston, then disconnect start up system, thus achieve the reliable startup of electrical 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 sense 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 sense of displacement of each piston and keep direction of current constant, then according to the position of each piston, switched the magnetic polarity of electromagnet upper and lower side fast around the mode of its height center line fast rotational 180 ° by electromagnet, thus 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.Electrical motor of the present invention implements braking automatically when abrupt slope is descending, ensure 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 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 of therefore Hall element acquisition is substantially from piston base, and namely Hall element is not substantially by the interference of electromagnet, ensure that the reliability that piston position detects.During concrete enforcement, 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 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, also can be battery-operated motor cycle, electro-tricycle, electric agricultural mechanical car etc.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, 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 that a kind of that the electric power piston-type motor in embodiment adopts rotates the switching mechanism of 180 ° and the structural representation of cylinder body for controlling electromagnet around its height center line;
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 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 for downhill braking of the present embodiment, it comprises: brake system, electric power piston motor 20, be connected in electric power piston motor 20 bent axle on flywheel, the power-transfer clutch 21 be located on flywheel, the change speed gear box 22 be 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 the driven wheel of a start up system.This start up system adopts the of the prior art and matching used start up system of existing engine petrol.
Described vehicle drive system comprises: the axle drive shaft 24 be in transmission connection through universal-joint 23 and the output shaft of change speed gear box 22, the diff 27 be in transmission connection through another universal-joint and axle drive shaft 24 and the wheel be connected by semiaxis 26 transmission with diff 27.Wherein, main reduction gear 25 can be set at axle drive shaft 24 and diff 27.
Described electric power piston motor 20 comprises: multiple high resistance non-magnet material (as: aluminum alloy, copper alloy etc.) make cylinder body 1, the piston 5 be made up of permanent magnet be located in cylinder body 1, be located at bent axle 2 below each cylinder body 1 and the connecting rod 3 for being in transmission connection with described bent axle 2 by each piston 5; 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 center line of electromagnet 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 stepping motor 12 transmission; 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 travel switch 13 and 14 be connected with CPU element; The bottom center of described cylinder body 1 is provided with a Hall element 15 be 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 conductor.The electromagnetic signal obtained to make Hall element 15 is further substantially from the bottom of piston.CPU element is also connected with vehicle Slope Transducer, for detecting the speed governing sensor of speed governing pedal or handlebar position.
Described brake system comprises: brake pedal, the drg controlled by brake pedal transmission and the brake pedal sensor for detecting brake pedal position be 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 for continuous driving crank 2, and makes the torque levels that bent axle 2 exports.
When battery-driven car starts, adopt described start up system to drive described flywheel, to make described bent axle 2 rotate, described CPU element detects the sense of displacement of each piston 5 by the Hall element 15 bottom each cylinder body 1, now, if record piston 5 displacement downward in a cylinder body 1, then described CPU element provides the electric current of respective direction by the coil 8 of the electromagnet 7 of described coil driver above this cylinder body 1, to make the magnetic polarity bottom this electromagnet 7 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 electromagnet 7, or, if now record piston 5 displacement forward in a cylinder body 1, then described CPU element provides the electric current of respective direction by the coil 8 of the electromagnet 7 of described coil driver above this cylinder body 1, to make the magnetic polarity bottom this electromagnet 7 contrary with the magnetic polarity at piston 5 top, piston 5 moves on accelerating in this cylinder body 1 because of the upper suction from electromagnet 7, until each electromagnet 7 coil 8 electric after, disconnect described start up system and keep the direction 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 bottom dead point arriving this cylinder body 1, CPU element exports an impulse singla to described stepping motor 12, a fixing angle is rotated by the direction of setting to drive this stepping motor 12, thus make stepping motor 12 control described rotating shaft 9 through described change speed gear box 11 to rotate 180 °, and piston 5 now arrives bottom dead point just or, because the magnetic polarity bottom electromagnet 7 is now contrary with the magnetic polarity at piston 5 top, piston 5 starts in this cylinder body 1 to top offset because of the upper suction from electromagnet 7, when described CPU element by described upper stroke switch 13 record this piston 5 be about to the top dead point arriving this cylinder body 1 time, CPU element exports another impulse singla to described stepping motor 12, with the angle driving this stepping motor 12 counter-rotation fixing, thus make stepping motor 12 control described rotating shaft 9 contrarotation 180 ° 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, thus make each piston 5 drive described bent axle 2 to operate to drive described flywheel to export positive-torque through corresponding connecting rod 3, flywheel drives vehicle drive system by power-transfer clutch 21, change speed gear box 22, thus drives battery-driven car.
During the invariant position of the described speed governing pedal of non-releasing orientation or hand handle, 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, to make described piston 5 in upper and lower displacement process, keep the size of the application force between piston 5 and electromagnet 7 to stablize, the power exported to make this electrical motor or the stability of moment of torsion better.When the position of described speed governing pedal or hand handle changes, the described piston 5 of described CPU element also in same cylinder body 1 adjusts the size of current in each coil 8 in real time with the spacing of electromagnet 7, to make the change of the application force between piston 5 and electromagnet 7 linearly, and it is corresponding with the change in location of described speed governing pedal or hand handle, and then the speed of a motor vehicle is linearly changed, to pass through driver comfort.
The speed governing pedal (it adopts the Das Gaspedal of automobile of the prior art) of this battery-driven car or hand are provided with (it adopts the speed regulating handle of Electrical Bicycle of the prior art) the speed governing sensor be connected with described CPU element, CPU element detects the position of speed governing pedal or hand handle by speed governing sensor, and then control the size of current of each coil 8, thus realize speed of a motor vehicle control.Speed governing sensor can select pressure sensor, is exported corresponding pressure value signal according to speed governing pedal by the degree of depth of entering into.
Described CPU element is also connected with the vehicle Slope Transducer (can adopt vehicle slope sensor disclosed in Chinese patent literature CN2703248) for detecting vehicle chassis angle degree; When the moving ahead of this battery-driven car, upwards climbing if record Current vehicle by described vehicle Slope Transducer, and recording the invariant position of speed governing pedal or hand handle, then CPU element is according to the gradient size corresponding electric current heightening each coil 8 automatically, stablizes to make the speed of a motor vehicle.If record Current vehicle on downward landslide by described vehicle Slope Transducer to record the invariant position of speed governing pedal or hand handle, then CPU element is according to the gradient size corresponding electric current turning down each coil 8 automatically, stablizes to make the speed of a motor vehicle.
Be in down ramp upgrade be greater than abrupt slope value (being such as greater than 10 °) when CPU element records Current vehicle by described vehicle Slope Transducer, record speed governing pedal or hand time 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, then CPU element provides the electric current of respective direction to the coil 8 of correspondence by described coil driver, to make the magnetic polarity bottom corresponding electromagnet 7 contrary with the magnetic polarity at piston 5 top, speed is moved down with what reduce piston 5, thus brake described bent axle 2, that is: make described flywheel externally export negative torque; If record piston 5 displacement forward, then CPU element provides the electric current of respective direction to the coil 8 of correspondence by described coil driver, to make the magnetic polarity bottom corresponding electromagnet 7 identical with the magnetic polarity at piston 5 top, with reduce piston 5 on move speed, thus brake described bent axle 2.
When described bent axle 2 does not shut down, if CPU element records by described lower stroke switch 14 bottom dead point that this piston 5 is about to arrive this cylinder body 1, then CPU element exports an impulse singla to described stepping motor 12, a fixing angle is rotated by the direction of setting to drive this stepping motor 12, thus make stepping motor 12 control described rotating shaft 9 through described change speed gear box 11 to rotate 180 °, if piston now 5 just or arrives bottom dead point and starts to top offset, then because the magnetic polarity bottom electromagnet 7 is now identical with the magnetic polarity at piston 5 top, piston 5 brakes described bent axle 2 starting to bear the lower repulsion from electromagnet 7 while top offset, if CPU element records by described upper stroke switch 13 top dead point that this piston 5 is about to arrive this cylinder body 1, then CPU element exports another impulse singla to described stepping motor 12, a fixing angle is rotated backward to drive this stepping motor 12, thus make stepping motor 12 control described rotating shaft 9 contrarotation 180 ° through described change speed gear box 11, if piston now 5 just or arrives top dead point and starts to bottom offset, then because the magnetic polarity bottom electromagnet 7 is now contrary with the magnetic polarity at piston 5 top, piston 5 brakes described bent axle 2 because of the upper suction from electromagnet 7, so repeatedly, to make described flywheel externally export negative torque, until when the speed of a motor vehicle is brought down below one low speed value (as 15Km/h), stop powering to each coil 8, or, until CPU element by speed governing sensor record speed governing pedal again depressed or hand by rotation time, 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 brake 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 dutycycle of the pulse current in coil 8 and the temperature of described coil 8 are linear or non-linear negative correlation, to prevent coil 8 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 hand are time released, then CPU element startup idling slides program.Namely CPU element controls size of current in each coil 8, is stable at 20Km/h to make the speed of a motor vehicle.
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 being greater than 40Km/h, CPU element records brake pedal by brake pedal sensor and is operated, namely when brake system implements braking, CPU element is actuating motor retrosequence also, until when described bent axle 2 is about to shut down, stops powering to each coil 8; Or, until CPU element to record brake pedal by brake pedal sensor released, when namely 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 the transmission of described change speed gear box 11; During work, CPU element exports an impulse singla to described stepping motor 12, to drive this stepping motor 12 to rotate a fixing angle by the direction of setting, thus stepping motor 12 is made to control described miniature gears 16 cw or left-hand revolution 180 ° through described change speed gear box 11, big gear wheel 17.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (2)
1. a downhill braking method for electrical piston driving type electric vehicle, is characterized in that this electrical piston driving type electric vehicle comprises: electric power piston motor (20), be connected in electric power piston motor (20) bent axle on flywheel, the power-transfer clutch (21) be located on flywheel, the change speed gear box (22) be 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 the driven wheel of a start up system;
Described electric power piston motor (20) comprising: multiple cylinder body (1), be located at the piston (5) be made up of permanent magnet in cylinder body (1) and the connecting rod (3) for each piston (5) and described bent axle (2) being in transmission connection; The below of each cylinder body (1) is located at by bent axle (2);
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 that 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) be connected with CPU element, and the bottom of cylinder body (1) is provided with the Hall element (15) be connected with described CPU element; CPU element is also connected with vehicle Slope Transducer, for detecting the speed governing sensor of speed governing pedal or handlebar position;
The downhill braking method of described electrical piston driving type electric vehicle, comprising:
When battery-driven car starts, adopt described start up system to drive described 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) of each cylinder body (1) bottom;
If record piston (5) displacement downward in a cylinder body (1), then described CPU element provides the electric current of respective direction by the coil (8) of the electromagnet (7) of described coil driver above this cylinder body (1), to make the magnetic polarity of this electromagnet (7) bottom 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 electromagnet (7);
If record piston (5) displacement forward in a cylinder body (1), then described CPU element provides the electric current of respective direction by the coil (8) of the electromagnet (7) of described coil driver above this cylinder body (1), to make the magnetic polarity of this electromagnet (7) bottom contrary with the magnetic polarity at piston (5) top, piston (5) moves on accelerating in this cylinder body (1) because of the upper suction from electromagnet (7);
Until each electromagnet (7) coil (8) electric after, disconnect described start up system and keep the direction 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) bottom dead point arriving this cylinder body (1), the electromagnet (7) that CPU element controls this cylinder body (1) top by described switching mechanism rotates 180 ° around the height center line of this electromagnet (7), and piston (5) now arrives bottom dead point, because the magnetic polarity of electromagnet (7) bottom is now contrary with the magnetic polarity at piston (5) top, piston (5) starts in this cylinder body (1) to top offset because of the upper suction from electromagnet (7), when described CPU element is about to by the piston (5) that described upper stroke switch (13) records in a cylinder body (1) top dead point arriving this cylinder body (1), CPU element controls the height center line contrarotation 180 ° of electromagnet (7) around this electromagnet (7) of this cylinder body (1) top by described switching mechanism, and piston (5) now arrives top dead point, because the magnetic polarity of electromagnet (7) bottom is now identical with the magnetic polarity at piston (5) top, piston (5) starts to bottom offset because of the lower repulsion from electromagnet (7), so repeatedly, thus make each piston (5) drive described bent axle (2) to operate through corresponding connecting rod (3) and drive described flywheel to export positive-torque, flywheel drives vehicle drive system by power-transfer clutch (21), change speed gear box (22), thus drives battery-driven car,
Meanwhile, CPU element detects the position of speed governing pedal or hand handle by speed governing sensor, and then controls the size of current of each coil (8), thus realizes speed of a motor vehicle control; Recording speed governing pedal or hand time released, CPU element controls described coil driver and stops powering to each coil (8);
To be on down ramp and the gradient is greater than abrupt slope value when CPU element records Current vehicle by described vehicle Slope Transducer, to record speed governing pedal or hand time released, CPU element actuating motor retrosequence, that is: simultaneously
CPU element detects the sense of displacement of each piston (5) by described Hall element (15), if record a piston (5) displacement downward, then CPU element provides the electric current of respective direction to the coil (8) of correspondence by described coil driver, to make the magnetic polarity of corresponding electromagnet (7) bottom contrary with the magnetic polarity at piston (5) top, move down speed with what reduce piston (5), thus brake described bent axle (2); If record a piston (5) displacement forward, then CPU element provides the electric current of respective direction to the coil (8) of correspondence by described coil driver, to make the magnetic polarity of corresponding electromagnet (7) bottom identical with the magnetic polarity at piston (5) top, with reduce piston (5) on move speed, thus brake described bent axle (2);
When described bent axle (2) does not shut down, if CPU element records by described lower stroke switch (14) bottom dead point that this piston (5) is about to arrive this cylinder body (1), the electromagnet (7) that then CPU element controls this cylinder body (1) top by described switching mechanism rotates 180 ° around the height center line 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) brakes described bent axle (2) starting to bear the lower repulsion from electromagnet (7) while top offset, if CPU element records by described upper stroke switch (13) top dead point that this piston (5) is about to arrive this cylinder body (1), then CPU element controls the height center line contrarotation 180 ° of electromagnet (7) around this electromagnet (7) of this cylinder body (1) top by described switching mechanism, 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) brakes described bent axle (2) because of the upper suction from electromagnet (7), so repeatedly, to make described flywheel externally export negative torque, until when the rotating speed of described flywheel is lower than a low speed value, stop powering to each coil (8), or, until CPU element record speed governing pedal be operated or hand by rotation time, CPU element again control described flywheel export positive-torque.
2. application rights requires an electrical piston driving type electric vehicle for the downhill braking method described in 1, it is characterized in that: 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 for continuous driving crank (2), and make the torque levels that bent axle (2) exports;
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).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210306780.3A CN102774280B (en) | 2011-01-25 | 2011-01-25 | Power piston drive electric vehicle and its downhill braking method |
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| CN201210306780.3A CN102774280B (en) | 2011-01-25 | 2011-01-25 | Power piston drive electric vehicle and its downhill braking method |
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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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| CN108579102A (en) * | 2018-06-01 | 2018-09-28 | 三峡大学 | A kind of automatic control obstacle detouring trolley of gravitional force driving |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19624247A1 (en) * | 1996-06-18 | 1998-01-02 | Rainer Born | Hybrid electric road vehicle drive system |
| JP2002027735A (en) * | 2000-07-07 | 2002-01-25 | Nobuhiro Murata | Moving insulator magnetic force or electrostatic force controlled device power |
| EP1753115A1 (en) * | 2005-08-10 | 2007-02-14 | Chuan Sheng Chen | Power engine |
| CN101697445A (en) * | 2009-10-26 | 2010-04-21 | 盛润泉 | magnetic piston motor |
| CN101860168A (en) * | 2010-05-13 | 2010-10-13 | 贾立进 | Electric engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7793634B2 (en) * | 2008-09-25 | 2010-09-14 | Shimon Elmaleh | Electro-magnetic internal combustion engine |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19624247A1 (en) * | 1996-06-18 | 1998-01-02 | Rainer Born | Hybrid electric road vehicle drive system |
| JP2002027735A (en) * | 2000-07-07 | 2002-01-25 | Nobuhiro Murata | Moving insulator magnetic force or electrostatic force controlled device power |
| EP1753115A1 (en) * | 2005-08-10 | 2007-02-14 | Chuan Sheng Chen | Power engine |
| CN101697445A (en) * | 2009-10-26 | 2010-04-21 | 盛润泉 | magnetic piston motor |
| CN101860168A (en) * | 2010-05-13 | 2010-10-13 | 贾立进 | Electric engine |
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