CN104833530A - Variable idling start test bed for electric car transmission system - Google Patents
Variable idling start test bed for electric car transmission system Download PDFInfo
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- CN104833530A CN104833530A CN201510268981.2A CN201510268981A CN104833530A CN 104833530 A CN104833530 A CN 104833530A CN 201510268981 A CN201510268981 A CN 201510268981A CN 104833530 A CN104833530 A CN 104833530A
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Abstract
The invention discloses a variable idling start test bed for an electric car transmission system, and the test bed comprises a control power supply, a DC motor, a shaft coupler, a rotation speed and torque sensor, a clutch, a spline shaft, a brake disc, mechanical braking devices, a DC generator, and a resistor box. The control power supply is connected to the DC motor, and the rotation speed and torque sensor is connected with the DC motor through the shaft coupler. An output shaft of the rotation speed and torque sensor is connected with a driving disc of the clutch, and a driven disc of the clutch is connected to a side of the spline shaft, wherein the other side of the spline shaft is in series connection with the brake disc. The mechanical braking devices are disposed at two sides of the brake disc. The DC generator is connected with the shaft coupler, and is connected to a test bed transmission system. The resistor box is connected to an armature loop of the DC generator in a series manner through a wire. The clutch is disposed in a transmission shaft system in fixed connection with a conventional electric car test bed, thereby forming a flexible connection mode of a transmission system. Moreover, the idle speed can be adjusted, the loading is flexible, the operation and control are simple, and an impact-type load is easy to simulate on the test bed, and the test bed is suitable for actual driving and road conditions.
Description
Technical field
The invention belongs to driving system for electric vehicles test field, more specifically, relate to a kind of driving system for electric vehicles variable idling starting test-bed.
Background technology
Existing electric motor car drive pattern is divided into centralized driving and wheel hub to drive two kinds of modes, wherein structural reductions usually, controls the new direction that hub-type driving is flexibly the development of current power car.Current electrical vehicular power assembly is mainly debugged on car load, there is installation period long, and process of the test is complicated, the problems such as trouble hunting workload is large; Be subject to the road conditions condition impacts such as load, road, weather during car load debugging simultaneously, vehicle travels unstable, there is potential safety hazard.Driving system for electric vehicles test-bed is the important tool of its dynamic property of research, and traditional centralized power assembly comprises the gear train such as wheel box, differential mechanism, transmission chain length, complex structure, and efficiency is low; And hub-type power assembly saves original gear train, take drive motor and vehicle body loaded rigid to be fastenedly connected mode, not there is idling start-stop function.
Described in patent of invention CN101235781A is the threst stand control system with idling startup/stopping function; it utilizes motor to substitute the idling start-stop of conventional electric generators realization to engine in hybrid vehicle; but after having started; engine idle is single fixing, cannot the load road conditions of Adaptive change.And in existing driving system for electric vehicles test-bed, carry out load loading with electric dynamometer, be difficult to impingement load in simulating vehicle starting or driving process; When being fastenedly connected mode, cannot implement the technical scheme of " starting under no load+variable idling starting+power-off brake ", existing test-bed can not meet debugging and testing requirements simultaneously.
Summary of the invention
For the defect of prior art, the object of the present invention is to provide a kind of driving system for electric vehicles variable idling starting test-bed, be intended to solve in current test-bed and there is single fixing idling, dynamic load loads difficulty, is difficult to carry out the problem that electric motor starting and vehicle body load start to walk to be separated.
The invention provides a kind of driving system for electric vehicles variable idling starting test-bed, comprise and control power supply, direct current motor, shaft coupling, torque and speed sensors, clutch coupling, splined shaft, disk brake, mechanical brake device, Dyn. and resistance box; Described control power supply is connected to described direct current motor; The input shaft of described torque and speed sensors is connected with the output shaft of described direct current motor by described first shaft coupling, and the output shaft of described torque and speed sensors is connected with described clutch driving plate; Described clutch driven plate is connected to described splined shaft side; Described splined shaft opposite side is connected in series described disk brake; Described mechanical brake device is arranged on described disk brake both sides; Described Dyn. connects described second shaft coupling access test-bed kinematic train; Described resistance box seals in described dynamo armature loop by wire.
Wherein, power supply, direct current motor, torque and speed sensors, clutch driving plate formation kinematic train active part is controlled; Torque and speed sensors input shaft and output shaft are connected to DC motor output shaft and clutch driving plate respectively; Clutch driven plate is connected to splined shaft side; Splined shaft opposite side serial connection disk brake; Mechanical brake device is arranged on disk brake both sides; Dyn. is by the second shaft coupling access test-bed kinematic train; Resistance box seals in dynamo armature loop.Wherein, clutch driven plate, disk brake, mechanical brake device, Dyn., resistance box form kinematic train secondary part;
Wherein, during work, controlled clutch topworks, maintenance clutch coupling is in ' from ' state, cut off the power transmission of direct current motor and secondary part; Handle mechanical brake device and make shoe brake friction disk brake, and the change of adjusting resistance case seals in resistance value in dynamo armature loop, the load resistance of simulating vehicle under different road conditions; According to the breakaway force of load cell feedback, regulable control power supply, makes direct current motor starting under no load, and reaches corresponding idling; Releasing clutch topworks, state that clutch coupling is in ' conjunction ', direct current motor power transmission, to secondary part, completes an electric motor car idling starting-up process; During Brake stop, controlled clutch topworks makes clutch separation, and direct current motor and load are without coupling of shaft system, and inertia is shut down; Manipulation mechanical brake device, shoe brake friction disk brake, vehicle body load is stopped, and completes a docking process.
Further, snap-in force between adjustment mechanical brake device shoe brake and disk brake, regulating resistance case change simultaneously seals in resistance value in dynamo armature loop, quiet when simulating vehicle is started to walk under the change condition such as road conditions, load, load, and dynamic resistance loads.
Further, when clutch coupling is in the starting of ' conjunction ' state, under realizing the mode that is fastenedly connected, motor belt motor carries direct starting mode; When clutch coupling is in the starting of ' from ' state, variable idling starting mode under flexible connection mode can be realized.
Further, according to clutch type and the difference making flowing mode, clutch assembly and topworks thereof, optionally select the multiple ways of realization such as mechanical clutch, automatically controlled tooth clutch, centrifugal clutch, magnetic-powder-type electromagnetic clutch.
The present invention compared with prior art has the following advantages:
(1) compared to existing electric vehicle test-bed using engine or alternating current generator as whole power train power source, choose the power source of direct current motor as test-bed, it is superior that it has speed adjusting performance, controls simple, not by advantages such as the minimum stabilized (steady-state) speed restrictions of engine.
(2) rigidity is taked to be fastenedly connected mode compared in existing electric vehicle test-bed between motor and vehicle body load, test-bed drive motor involved in the present invention can after starting under no load, according to change condition such as road conditions, load, loads, the rotating speed of choose reasonable clutch coupling incision load, implement the high power quality of a kind of guarantee, the electric motor car starting strategy of the variable idling of high comfort; Meanwhile, during braking brake, vehicle body braking can be realized and be separated with motor parking.
(3) carry out vehicle body load simulation compared to existing electric vehicle test-bed electric dynamometer, test-bed involved in the present invention is by disk brake, and mechanical brake device and Dyn. form fictitious load.Its feature is, disk brake and mechanical brake device can simulate impingement load flexibly, and seals in resistance by adjustment dynamo armature loop, realizes the quiet, dynamic of load resistance in electric motor car start-stop process and loads, and realisticly drives and road conditions feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of driving system for electric vehicles variable idling starting test-bed;
The schematic diagram of (a) mechanical clutch in Fig. 2, the schematic diagram of (b) mechanical clutch topworks, the schematic diagram of (c) mechanical clutch actuator bracket;
Fig. 3 is the schematic diagram of mechanical brake device structure;
Fig. 4 is the position view of automatically controlled tooth clutch at driving system for electric vehicles variable idling starting test-bed.
Wherein, 1 be torque and speed sensors for controlling power supply, 2 for direct current motor, 3 is the first shaft coupling, 4,5 be clutch coupling, 6 be splined shaft, 7 be disk brake, 8 be Dyn. for mechanical brake device, 9 is the second shaft coupling, 10,11 be resistance box, 12 be clutch actuating mechanism, 13 be load cell, 14 be wire, 15 be Flywheel disc, 16 be clutch disk, 17 be platen, 18 be release bearing, 19 be disengaging yoke, 20 be bearing sleeve, 21 for mechanical clutch actuator bracket.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
One provided by the invention is applicable to driving system for electric vehicles variable idling starting test-bed, under the conditions such as fictitious load, speed, road condition change, respectively rigidity to be fastenedly connected and clutch coupling flexibly connects the measuring and analysis of electric motor car starting performance index under two kinds of patterns, and then the solution providing a kind of optimum idling starting of electric motor car that is target with high comfort, high-quality to control.
Fig. 1 shows the variable idling starting of driving system for electric vehicles described in the present invention test-bed structural schematic block diagram, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
Driving system for electric vehicles variable idling starting test-bed comprises: control power supply 1, direct current motor 2, first shaft coupling 3, torque and speed sensors 4, clutch coupling 5, splined shaft 6, disk brake 7, mechanical brake device 8, second shaft coupling 9, Dyn. 10, resistance box 11, wire 14; Wherein control power supply 1 to power to direct current motor 2, torque and speed sensors 4 input shaft is connected with direct current motor 2 output shaft by the first shaft coupling 3, and torque and speed sensors 4 output shaft is connected with clutch coupling 5 driving disc spacing pressing; Splined shaft 6 side is connected with clutch coupling 5 clutch plate, splined shaft 6 opposite side serial connection disk brake 7; Mechanical brake device 8 is arranged on disk brake 7 both sides; Dyn. 10 accesses test-bed kinematic train by connection second shaft coupling 9; Resistance box 11 is connected to Dyn. 10 armature circuit by wire 14.
Drive part involved in the present invention is by controlling power supply 1 and direct current motor 2 forms; Wherein control power supply 1 and can be direct supply or battery pack connection in series-parallel composition; Governor control characteristics is good, and the superior direct current motor 2 of control performance is as whole power train power source.
Power transmission part involved in the present invention is made up of clutch coupling 5 and topworks 12 thereof, realizes transmission and the interruption of kinematic train active part and secondary part power; According to clutch type and the difference making flowing mode, there are multiple way of realization in clutch assembly and topworks thereof, as adopted mechanical clutch, electric-controlled type clutch coupling etc.
Load loading section involved in the present invention is by disk brake 7, and mechanical brake device 8 and Dyn. 10 form, and during the changes such as simulation road conditions, load, load, quiet in vehicle start or operational process, dynamic resistance loads; Control bracing wire or brake pedal make the shoe brake and its friction that are placed in disk brake 7 both sides, produce braking moment, its large I is by stay-supported or foot-operated operating-controlling mechanism dynamic regulation, and adjustment Dyn. 10 armature seals in resistance box 11 resistance realizes stable state and load.
Detecting portion involved in the present invention is made up of torque and speed sensors 4, Dyn. 10 and load cell 13, realizes direct current motor 2 rotating speed, load speed, the measurement of load torque.
In order to the driving system for electric vehicles variable idling starting test-bed that the further description embodiment of the present invention provides, existing details are as follows with instantiation by reference to the accompanying drawings:
Control power supply 1 and connect direct current motor 2 by wire 14, torque and speed sensors 4 is arranged between direct current motor 2 and clutch coupling 5 driving disc spacing pressing by the first shaft coupling 3; Clutch coupling 5 clutch plate is connected with splined shaft 6 side; Interruption and the transmission of whole kinematic train active part and secondary part power is realized by clutch coupling 5; Disk brake 7 is arranged on splined shaft 6 opposite side, with mechanical brake device 8, Dyn. 10 forms load, and the resistance box 11 be serially connected in Dyn. 10 armature circuit realizes the adjustment of load under different rotating speeds, to realize the static loading of load resistance in starting-up process.
In the present invention, clutch actuating mechanism 12 and load cell 13 all belong to the part in driving system for electric vehicles.Clutch actuating mechanism 12 is devices that a kind of solenoidoperated cluthes 5 engage or are separated, and is mainly used for the Engage and disengage promoting clutch coupling 5 driving disc spacing pressing and clutch coupling 5 clutch plate.Load cell 13 is mainly used for detecting breakaway force, as the road surface in actual conditions, grade resistance etc.
Test-bed as above, its course of work is as follows: during variable idling starting, first controlled clutch topworks 12 makes kinematic train active part be separated with secondary part; Control bracing wire or snap-in force between brake pedal dynamics reconditioner tool clamping device 8 shoe brake and disk brake 7, regulating resistance case 11 change simultaneously seals in resistance value in Dyn. 10 armature circuit, simulation different starting load resistance; By the breakaway force that load cell 13 feeds back, regulable control power supply 1 output voltage, load idling cut by dynamic conditioning clutch coupling 5; Releasing clutch topworks 12, completes clutch coupling 5 joint action; And according to torque and speed sensors 4 export tach signal and Dyn. 10 armature terminal voltage signal, record direct current motor 2 and load at starting-up process medium speed.
Fig. 2 (a), (b) and (c) sets forth mechanical clutch, mechanical clutch and topworks thereof and actuator bracket specific implementation structure: clutch disk 16, platen 17, release bearing 18 form clutch assembly, wherein platen 17 is riveted on Flywheel disc 15 by screw, and clutch disk 16 is between platen 17 and Flywheel disc 15; Disengaging yoke 19 is arranged in mechanical clutch actuator bracket 21; Bearing sleeve 20 is fixed in mechanical clutch actuator bracket 21; Release bearing 18 is socketed on bearing sleeve 20; Disengaging yoke 19 is connected with release bearing 18 by latch, and disengaging yoke 19 is arranged in mechanical clutch actuator bracket 21.
Fig. 3 gives the specific implementation structure of mechanical brake device: disk brake 7 is arranged on the second shaft coupling 9 of being connected with splined shaft 6 side by screw, mechanical brake device 8 (bracing wire or foot-operated maneuverability pattern) is serially connected in disk brake 7 both sides, control bracing wire or brake pedal and make to be placed in the shoe brake of both sides and disk brake 7 rubs, produce braking moment, its size is regulated and controled by the dynamics of bracing wire or brake pedal.
Described driving system for electric vehicles variable idling starting test-bed can be taken into account the test that rigidity in existing stand is fastenedly connected the direct starting under mode and the starting of the idling under flexible connection mode simultaneously.For mechanical clutch, composition graphs 1, Fig. 2 sets forth the test-bed implementation step with idling start-stop function:
(1) manipulation disengaging yoke 19 promotes release bearing 18 and compresses platen 17, maintenance clutch coupling 5 is in ' from ' state, cut off the power transmission of direct current motor 2 and secondary part; According to the breakaway force that load cell 13 feeds back, regulable control power supply 1 output voltage, makes direct current motor 2 starting under no load, reaches corresponding idling.
(2) handling mechanical brake device 8 makes shoe brake compress disk brake 7, and adjusting resistance case 11 change seals in resistance value in Dyn. 10 armature circuit, the load resistance of simulating vehicle under different road conditions.
(3) releasing clutch topworks 12, platen 17 returns back to initial position, and clutch coupling 5 is in ' conjunction ' state, and direct current motor 2 power transmission, to secondary part, completes an electric motor car idling starting-up process.
(4) during braking brake, manipulation disengaging yoke 19 promotes release bearing 18 and compresses platen 17, and clutch coupling 5 is separated, and direct current motor 2 and secondary part are without coupling of shaft system, and inertia is shut down; Manipulation mechanical brake device 8, shoe brake friction disk brake 7, vehicle body load is stopped, and completes a docking process.
In embodiments of the present invention, automatically controlled tooth clutch can be adopted to substitute mechanical clutch, flexible connecting transmission system active part and secondary part.When composition graphs 4 illustrates and adopts automatically controlled tooth clutch, the connected mode of each parts of stand, be specially: control power supply 1 and connect direct current motor 2 by wire 14, torque and speed sensors 4 is arranged between direct current motor 2 and tooth clutch 5 driving disc spacing pressing by the first shaft coupling 3; Tooth clutch 5 clutch plate is connected with splined shaft 6 side; Manipulation clutch actuating mechanism 12 completes tooth clutch 5 driving disc spacing pressing and is separated and joint action with tooth clutch 5 clutch plate, realizes interruption and the transmission of whole kinematic train active part and secondary part power; Disk brake 7 is arranged on splined shaft 6 opposite side, and with mechanical brake device 8, Dyn. 10 forms load; The resistance box 11 be serially connected in Dyn. 10 armature circuit realizes the adjustment of load under different rotating speeds, to realize the static loading of load resistance in starting-up process.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a driving system for electric vehicles variable idling starting test-bed, it is characterized in that, comprise and control power supply (1), direct current motor (2), the first shaft coupling (3), torque and speed sensors (4), clutch coupling (5), splined shaft (6), disk brake (7), mechanical brake device (8), the second shaft coupling (9), Dyn. (10) and resistance box (11);
Described control power supply (1) is connected to described direct current motor (2); The input shaft of described torque and speed sensors (4) is connected with the output shaft of described direct current motor (2) by described first shaft coupling (3), and the output shaft of described torque and speed sensors (4) is connected with described clutch coupling (5) driving disc spacing pressing; Described clutch coupling (5) clutch plate is connected to described splined shaft (6) side; Described splined shaft (6) opposite side is connected in series described disk brake (7); Described mechanical brake device (8) is arranged on described disk brake (7) both sides; Described Dyn. (10) connects described second shaft coupling (9) access test-bed kinematic train; Described resistance box (11) seals in described Dyn. (10) armature circuit by wire (14).
2. driving system for electric vehicles as claimed in claim 1 variable idling starting test-bed, it is characterized in that, described control power supply (1), direct current motor (2), torque and speed sensors (4), clutch coupling (5) driving disc spacing pressing forms kinematic train active part; Described clutch coupling (5) clutch plate, disk brake (7), mechanical brake device (8), Dyn. (10), resistance box (11) form kinematic train secondary part.
3. driving system for electric vehicles as claimed in claim 1 variable idling starting test-bed, it is characterized in that, during work, controlled clutch topworks (12), maintenance clutch coupling (5) is in ' from ' state, cut off the transmission of direct current motor (2) and secondary part power;
Handle mechanical brake device (8) and make shoe brake friction disk brake (7), and adjusting resistance case (11) change seals in resistance value in Dyn. (10) armature circuit, the load resistance of simulating vehicle under different road conditions;
According to the breakaway force that load cell (13) feeds back, regulable control power supply (1) output voltage, makes direct current motor (2) starting under no load, and reaches corresponding idling;
Releasing clutch topworks (12), clutch coupling (5) is in ' conjunction ' state, and direct current motor (2) power transmission, to secondary part, completes an electric motor car idling starting-up process;
During Brake stop, controlled clutch topworks (12) makes clutch coupling (5) be separated, and direct current motor (2) and secondary part are without coupling of shaft system, and inertia is shut down; Manipulation mechanical brake device (8) makes shoe brake friction disk brake (7), and vehicle body load is stopped, and completes a docking process.
4. driving system for electric vehicles as claimed in claim 1 variable idling starting test-bed, it is characterized in that, snap-in force between adjustment mechanical brake device (8) shoe brake and disk brake (7), quiet during electric motor car starting under the road conditions conditions such as regulating resistance case (11) change simultaneously seals in resistance value in Dyn. (10) armature circuit, simulation different loads, dynamic resistance loads.
5. driving system for electric vehicles as claimed in claim 1 variable idling starting test-bed, is characterized in that, when clutch coupling (5) is in the starting of ' conjunction ' state, under realizing the mode that is fastenedly connected, motor belt motor carries direct starting mode; When clutch coupling (5) is in the starting of ' from ' state, variable idling starting mode under flexible connection mode can be realized.
6. the variable idling starting of the driving system for electric vehicles as described in any one of claim 1-5 test-bed, it is characterized in that, clutch coupling (5) is specially mechanical clutch or electric-controlled type clutch coupling.
7. the variable idling starting of the driving system for electric vehicles as described in any one of claim 1-6 test-bed, it is characterized in that, described control power supply (1) is connected to described direct current motor (2) by wire (14).
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| CN201510268981.2A CN104833530B (en) | 2015-05-22 | 2015-05-22 | A kind of variable idling starting test-bed of driving system for electric vehicles |
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