CN102620942A - Matching evaluation test bed of pure electric automobile power driving system - Google Patents
Matching evaluation test bed of pure electric automobile power driving system Download PDFInfo
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- CN102620942A CN102620942A CN2012101197380A CN201210119738A CN102620942A CN 102620942 A CN102620942 A CN 102620942A CN 2012101197380 A CN2012101197380 A CN 2012101197380A CN 201210119738 A CN201210119738 A CN 201210119738A CN 102620942 A CN102620942 A CN 102620942A
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Abstract
The invention relates to a matching evaluation test bed of a pure electric automobile power driving system. The matching evaluation test bed comprises a CAN (Controller Area Network) bus, a USB-To-CAN (Universal Serial Bus-To-Controller Area Network) card 1, a vehicle control unit, an information unit 1, an information unit 2, a motor controller, an information unit 3, a battery management system, a charger controller, an information unit 4, a data collecting system, a USB-to-CAN card 2, an industrial personal computer 1, an industrial personal computer 2 and the like. The specific road working condition cycle is simulated by using an alternating current electric dynamometer in the matching evaluation test bed of the pure electric automobile power driving system so that the pure electric automobile power assembly system matching scheme is optimized and selected; and the optimal power driving system matching scheme is determined by using a method for optimizing transmission system parameters and the like. The power driving system scheme in the actual vehicle application can be also tested so as to evaluate the adaptabilities of the electric automobile power assembly system and the road working condition.
Description
Technical field
The present invention relates to a kind of automobile power testing table, be specifically related to a kind of pure electric automobile power-driven system coupling evaluation test platform.
Background technology
The optimization of electric powered motor drive system parameters coupling and controller control strategy needs a real experimental enviroment, and the characteristic of power-driven system critical component need be tested on testing table under some gordian technique, particularly maximum conditions.Present existing electric automobile testing table mainly carries out motor performance test or battery performance test, owing to adopt electric eddy current dynamometer, makes that testing table can't the simcity road condition, and motor performance can only be tested the driving operating mode; The mechanical flywheel simulating vehicle inertia that adopt during energy feedback test, the vehicle that can simulate is very limited more.It is thus clear that the testing table of building at present can only carry out performance test to power assembly system individual event parts, can't accomplish functions such as power assembly optimum Scheme, system performance prediction and the checking of critical component matching scheme.
Summary of the invention
The present invention is in order to overcome the deficiency of above technology; A kind of electric powered motor drive system coupling evaluation test platform is provided; This electric powered motor drive system coupling evaluation test stylobate can carry out type selecting to the power-driven system critical component of electric automobile, the critical component characteristic is carried out test analysis, also can be carried out matching optimization to electric powered motor drive system scheme in equipment such as the continuously adjustable battery discharging appearance of electric current, electric A.C. dynamometers.
The present invention overcomes the technical scheme that its technical matters adopts:
This pure electric automobile power-driven system coupling evaluation test platform comprises CAN bus, the USB-To-CAN card 1 that is connected with the CAN bus, entire car controller, message unit 1, message unit 2, electric machine controller, message unit 3, battery management system, charging set controller, message unit 4, data acquisition system (DAS) and USB-To-CAN card 2; Industrial computer 1 links to each other with USB-To-CAN card 1; The car status information acquisition module is connected with entire car controller, and Dynamometer Control System is connected with message unit 1, and the rotational speed and torque measuring instrument is connected with message unit 2; Drive motor is connected in electric machine controller and data acquisition system (DAS); Electric A.C. dynamometer is connected in drive motor through torque and speed sensors, and electric A.C. dynamometer is connected in Dynamometer Control System, and torque and speed sensors is connected in the rotational speed and torque measuring instrument; Experiment power supply is connected in message unit 3; Electric battery is connected in battery management system, and charging set is connected in charging set controller and electric battery, and electric battery and experiment power supply are connected in switching device shifter; Switching device shifter is connected in electric machine controller and data acquisition system (DAS); The battery discharging appearance is connected in message unit 4, and display device is connected in industrial computer 2, and industrial computer 2 is connected in USB-To-CAN card 2.
Above-mentioned message unit 1 changes the CAN module for RS485.
Above-mentioned message unit 2 changes the CAN module for RS232.
Above-mentioned message unit 3 changes the CAN module for RS232.
Above-mentioned message unit 4 changes the CAN module for RS232.
Above-mentioned switching device shifter is a direct current interlocking duplex contactor.
Above-mentioned experiment power supply is a WWL-XQ31 motor in electric automobile controller experiment power supply.
The invention has the beneficial effects as follows: this pure electric automobile power-driven system coupling evaluation test platform converts each apparatus remote communication information in the testing table to the CAN bus communication, has made up the testing table based on the CAN bus.CAN communication network structure has efficient, general characteristics.Can carry out type selecting to the power-driven system critical component of electric automobile, the critical component characteristic is carried out test analysis, also can be carried out matching optimization to electric powered motor drive system scheme, effectively reduce the risk and cost of electric automobile development.
Electric A.C. dynamometer simulation town road condition; Electric machine controller, experiment power supply provide energy; In conjunction with the electric vehicle design object; Design the drive motor type selecting of electric automobile, and torque characteristics, efficiency characteristic, overload characteristics and the energy feedback characteristic of selecting motor are tested, finally confirm to obtain the drive motor model of related electric automobile.
Utilize in the testing table the continuously adjustable battery discharging appearance test of electric current to obtain electric current discharging efficiency characteristic, electrokinetic cell terminal voltage characteristic and open-circuit voltage characteristic when different current discharge; Utilize the testing table electric A.C. dynamometer to be operated in the rotating speed pattern power is provided, carry out electrokinetic cell energy feedback characteristic test,, can be directed against target design vehicle power battery parameter choose reasonable in conjunction with the drive motor parameter of town road condition and selection.
Utilize electric A.C. dynamometer simulation specified link operating mode circulation in this pure electric automobile power-driven system coupling evaluation test platform; Can be optimized selection to the pure electric vehicle power assembly system matching scheme; Through methods such as optimization kinematic train parameters, confirm optimum power-driven system matching scheme.Also can test, to estimate the adaptability of power assembly system and road condition the power-driven system scheme that actual vehicle is used.
Utilize this pure electric automobile power-driven system coupling evaluation test platform to simulate true road conditions; With the drive motor system as execution unit; Carry out the actual test of vehicle traction and braking energy feedback, the high efficiency energy operating strategy of the entire car controller that the exploitation real vehicle is used.
Description of drawings
Fig. 1 is the system block diagram of pure electric automobile power-driven system coupling evaluation test platform of the present invention;
Among the figure, the 1.CAN bus.
Embodiment
1 couple of the present invention further specifies below in conjunction with accompanying drawing.
This pure electric automobile power-driven system coupling evaluation test platform comprises CAN bus 1, the USB-To-CAN card 1 that is connected with CAN bus 1, entire car controller, message unit 1, message unit 2, electric machine controller, message unit 3, battery management system, charging set controller, message unit 4, data acquisition system (DAS) and USB-To-CAN card 2; Industrial computer 1 links to each other with USB-To-CAN card 1; The car status information acquisition module is connected with entire car controller, and Dynamometer Control System is connected with message unit 1, and the rotational speed and torque measuring instrument is connected with message unit 2; Drive motor is connected in electric machine controller and data acquisition system (DAS); Electric A.C. dynamometer is connected in drive motor through torque and speed sensors, and electric A.C. dynamometer is connected in Dynamometer Control System, and torque and speed sensors is connected in the rotational speed and torque measuring instrument; Experiment power supply is connected in message unit 3; Electric battery is connected in battery management system, and charging set is connected in charging set controller and electric battery, and electric battery and experiment power supply are connected in switching device shifter; Switching device shifter is connected in electric machine controller and data acquisition system (DAS); The battery discharging appearance is connected in message unit 4, and display device is connected in industrial computer 2, and industrial computer 2 is connected in USB-To-CAN card 2.
Pure electric automobile power-driven system coupling evaluation test platform utilizes CAN bus 1 to carry out the transmission of status information and steering order; With reference to SAE J1939 standard; Charging set is with battery management system communication protocol and combine testing table controller actual conditions, and the definition of testing table node source address is as shown in table 1.Made up pure electric automobile power-driven system coupling evaluation test platform Communication Control network based on CAN bus 1; Comprise industrial computer 1, industrial computer 2 in the network; Industrial computer 1 directly hangs on the bus through Kvaser USB-to-CAN card 1, and industrial computer 2 directly hangs on the bus through Kvaser USB-to-CAN card 2.Industrial computer 1 equipment such as control electric machine controller, Dynamometer Control System and battery discharging appearance are worked according to the setting pattern.Industrial computer 2 is accomplished data acquisition in the testing table all devices operational process, and dynamically shows on display device with the mode of data or curve.Convert the communication information of motor in electric automobile controller experiment power supply, battery discharging appearance, speed/torque sensor and dynamometer system in the testing table 1 communication of to CAN bus through message unit, effectively expanded the versatility of each equipment of testing table.
| The node title | The address |
| Industrial computer 1 (driving display) | 40(0X28) |
| Entire car controller | 36(0x24) |
| Electric machine controller | 130(0x82) |
| Battery management system | 244(0xF4) |
| The charging set control system | 229(0xE5) |
| Dynamometer Control System | 131(0x83) |
| Experiment power supply | 132(0x84) |
| Industrial computer 2 | 133(0x85) |
| The battery discharging appearance | 134(0x86) |
| Data acquisition system (DAS) | 135(0x87) |
Table 1 testing table CAN network node address allocation table
Above-mentioned message unit 1 is that RS485 changes the CAN module, and above-mentioned message unit 2, message unit 3, message unit 4 is RS232 changes the CAN module.
Above-mentioned switching device shifter is a direct current interlocking duplex contactor
With reference to GB GB18333.1-2001 and automobile industry standard QC/T 743-2006, this pure electric automobile power-driven system coupling evaluation test platform mainly comprises batteries of electric automobile group and battery management system test:
(1) flash-over characteristic and the parameter of consistency that flow down in different electric of test battery group;
(2) according to the requirement of pure electric automobile vehicle performance, the operating characteristic of electric battery and part maximum conditions under the test real road operating mode (like energy feedback and big electric current output of short time) are battery performance down;
(3) test battery management system temperature, voltage and current monitoring, functions such as SOC calculating and alarm and protection.
When carrying out above-mentioned (1) and (3) test; The battery discharging appearance is tested electric battery and battery management system as the power battery pack load; Industrial computer 1 sends message 0xCF11528 through CAN bus 1; Set the parameters such as discharge regime, per discharge time in stage and discharge current of battery discharging appearance, and begin and quit work through CAN bus 1 issue an order control battery discharging appearance.Message unit 4 is resolved the CAN message information, changes the RS232 information that the CAN module is converted into the identification of battery discharging appearance through RS232, and control battery discharging appearance is according to set condition work.After battery power discharge finishes, send message 0x1806E5F4 to the charging set controller through industrial computer 1, the charging set controller is set charging set and is allowed parameters such as charging voltage and charging current, and electric battery is charged.In the battery set charge/discharge process; Through parameters such as battery management system test unit cell voltage, temperature and assembled battery total voltage, total current and electric battery SOC; Battery management system packs the data to effective message; Be sent to industrial computer 2 and show the electric battery course of work in real time, in view of the above the battery management system function is verified.When carrying out above-mentioned (2) test; Make the power supply of electric battery through direct current interlocking duplex contactor as drive motor and electric machine controller; Industrial computer 1 is through message unit 1 control dynamometer system work; Message unit 1 receives the CAN message that industrial computer 1 sends, and changes into 485 bus messages of Dynamometer Control System identification, and is sent to Dynamometer Control System based on the Modbus agreement; Road resistance and descending and vehicle inertia provides when slowing down power when electric automobile quickens, goes up a slope and at the uniform velocity goes under the control electric A.C. dynamometer simulation real road operating mode, system combined operation is tested electric battery and battery management system; Data acquisition system (DAS) is gathered electric battery, battery discharging appearance and electric A.C. dynamometer and Dynamometer Control System correlation parameter in real time; And data are sent to industrial computer 2 through CAN bus 1; Industrial computer 2 shows each parameter and the relation curve between the time in real time through display device; And can test data be derived; Data to gathering are carried out Treatment Analysis; The electric battery terminal voltage
and the open-circuit voltage
that obtain according to test; Calculate the electric battery efficiency characteristic through
, can design the selection of electric powered motor drive system medium power electric battery in view of the above.
With reference to GB GB/T 18488-2006 used for electric vehicle motor and controller, motor in electric automobile and controller test specification thereof and motor in electric automobile and controller technology standard thereof, testing table drive motor and controller test mainly comprise:
(1) drive motor family curve test comprise test of drive motor torque characteristics and efficiency test and the test of efficient district, and probe temperature is to the influence of drive motor efficient.
(2) can carry out drive motor short-time overload attribute testing, high workload speed test and overspeed test.
(3) with the electric A.C. dynamometer associating, descending, deceleration and damped condition during dynamometer machine analog electrical electrical automobile road driving carry out the Way of Regenerating Energy Feedback test.
When carrying out above-mentioned (1) and (2) test, can by experiment power supply electric energy be provided, make the drive motor running, carry out the drive motor attribute testing through direct current interlocking duplex contactor.In the test process; Industrial computer 1 sends message 0xCF11728; Set the experiment power supply WV, parameters such as working current are through message unit 3 control experiment power supply work; Data acquisition system (DAS) is gathered the information such as motor temperature 1, motor temperature 2, drive motor busbar voltage and bus current of drive motor, rotating speed and moment information that the rotational speed and torque measuring instrument is gathered drive motor in real time through the torque and speed sensors that is connected on the drive motor in real time.To change the CAN module be the CAN bus message with the RS232 information translation to the information that data acquisition system (DAS) is gathered and be sent to industrial computer 2 through CAN bus 1 through RS232 through CAN bus 1 and rotational speed and torque measuring instrument information; Industrial computer 2 carries out the real-time demonstration of drive motor parameters of operation process through display device; And according to the drive motor busbar voltage that collects
, bus current
, drive motor rotating speed
and torque
information; Calculate the drive motor system effectiveness through
, confirm driving electromotor selection in the design vehicle power-driven system according to the electric system efficiency characteristic.Rotational speed and torque measuring instrument output information is the RS232 bus message, and message unit 2 receives rotational speed and torque measuring instrument information, and RS232 information is changed into the CAN bus message, sends message to industrial computer 2.When carrying out above-mentioned (3) test; For authentic testing drive motor and electrokinetic cell characteristic; Industrial computer 1 is set electric A.C. dynamometer and is operated under the rotating speed pattern, the vehicle inertia energy when adopting electric A.C. dynamometer simulating vehicle descending, deceleration and braking, and drive motor is operated in power generation mode at this moment; Electric battery is charged testing vehicle power-driven system energy feedback characteristic.
The pure electric automobile power-driven system should be done as a whole consideration; Can not electric battery, drive motor, entire car controller, battery management system and electric machine controller be kept apart and do certain a part of test separately; Take all factors into consideration electric battery and battery management system, drive motor and electric machine controller, entire car controller and the vehicle load form of expression and the relative importance to the power assembly system performance impact, the matching optimization and the electric automobile whole design that can be power assembly of electric automobile provide important evidence.
Remote data collecting diversity method based on GPRS; Realize the remote collection of electric automobile road driving data through the vehicle carried data collecting terminal; For confirming that the electric automobile during traveling operating mode provides basic data source, the data of gathering are carried out statistical study, finally synthetic target road operating mode.
According to pure electric automobile design object and target road operating mode; Calculate the resistance to rolling, air resistance, grade resistance and the acceleration resistance that receive when electric automobile goes on target road; And act on the actual loading on the drive motor axle when going through the electric A.C. dynamometer simulated automotive, reproduce the electric automobile road running mode; Drive motor provides electric energy by electric battery; And according to setting the operation of operating mode rotating speed; Pure electric automobile power-driven system coupling evaluation test platform data acquisition system (DAS) is gathered each Test Point Datas of major equipment such as electric battery, drive motor and electric A.C. dynamometer in real time; Calculate pure electric automobile power-driven system whole efficiency and energy resource consumption rate simultaneously; Reach the purpose of estimating the power assembly system performance, and can make judgement the adaptability of existing power assembly of electric automobile and real road operating mode.
Adopt electric A.C. dynamometer analog electrical electrical automobile road condition, when simulating vehicle quickens and at the uniform velocity goes, set the dynamometer resistance torque value as vehicle load and change in time; Slow down at simulating vehicle, when descending and brake, set the dynamometer machine tachometer value and change in time, power is provided, realize the real time modelling of pure electric automobile real road driving cycle through Dynamometer Control System.Entire car controller is through gas pedal, brake pedal, vehicle gear and the key switch information of the real-time collection vehicle of car status information acquisition module; Entire car controller obtains torque demand according to the driver driving demand, sends message 0x18FF0524 controlling and driving machine operation; The drive motor system is as the execution unit of electric automobile; Receive the order of entire car controller, can under real environment, develop integrated vehicle control tactics, practice thrift cost; Shorten the cycle of new model exploitation, and for the optimization research of integrated vehicle control tactics provide one fast, test platform efficiently.
Above-mentioned experiment power supply can be used WWL-XQ31 motor in electric automobile controller experiment power supply; This motor in electric automobile controller experiment power supply is a motor in electric automobile test specialized designs, but analog electrical electrical automobile electric battery is carried out drive motor performance, electric machine controller test and braking energy recovery test; When simulating vehicle deceleration and braking energy feedback; Drive motor will be in on-position, cause that power source bus voltage sharply raises, and power supply is designed with discharging function; Can voltage be stabilized in setting value, guarantee the safety of electric machine controller and this motor in electric automobile controller experiment power supply; Motor in electric automobile controller experiment power supply has remote control function, can be to parameter settings such as output voltages, and parameters such as the voltage during to operation, electric current are monitored in real time.
Claims (7)
1. a pure electric automobile power-driven system matees the evaluation test platform; It is characterized in that: comprise CAN bus (1), the USB-To-CAN card 1, entire car controller, message unit 1, message unit 2, electric machine controller, message unit 3, battery management system, charging set controller, message unit 4, data acquisition system (DAS) and the USB-To-CAN card 2 that are connected with CAN bus (1), industrial computer 1 links to each other with USB-To-CAN card 1, and the car status information acquisition module is connected with entire car controller; Dynamometer Control System is connected with message unit 1; The rotational speed and torque measuring instrument is connected with message unit 2, and drive motor is connected in electric machine controller and data acquisition system (DAS), and electric A.C. dynamometer is connected in drive motor through torque and speed sensors; Electric A.C. dynamometer is connected in Dynamometer Control System; Torque and speed sensors is connected in the rotational speed and torque measuring instrument, and experiment power supply is connected in message unit 3, and electric battery is connected in battery management system; Charging set is connected in charging set controller and electric battery; Electric battery and experiment power supply are connected in switching device shifter, and switching device shifter is connected in electric machine controller and data acquisition system (DAS), and the battery discharging appearance is connected in message unit 4; Display device is connected in industrial computer 2, and industrial computer 2 is connected in USB-To-CAN card 2.
2. pure electric automobile power-driven system coupling evaluation test platform according to claim 1, it is characterized in that: above-mentioned message unit 1 changes the CAN module for RS485.
3. pure electric automobile power-driven system coupling evaluation test platform according to claim 1, it is characterized in that: above-mentioned message unit 2 changes the CAN module for RS232.
4. pure electric automobile power-driven system coupling evaluation test platform according to claim 1, it is characterized in that: above-mentioned message unit 3 changes the CAN module for RS232.
5. pure electric automobile power-driven system coupling evaluation test platform according to claim 1, it is characterized in that: above-mentioned message unit 4 changes the CAN module for RS232.
6. pure electric automobile power-driven system coupling evaluation test platform according to claim 1, it is characterized in that: above-mentioned switching device shifter is a direct current interlocking duplex contactor.
7. pure electric automobile power-driven system coupling evaluation test platform according to claim 1, it is characterized in that: above-mentioned experiment power supply is a WWL-XQ31 motor in electric automobile controller experiment power supply.
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| CN106526351B (en) * | 2016-09-29 | 2019-03-29 | 肇庆学院 | Hybrid power special-purpose vehicle regenerates auxiliary power testing stand and its test method |
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| CN108445403A (en) * | 2018-03-05 | 2018-08-24 | 东莞中山大学研究院 | Battery and battery management system test method and system |
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| CN115962962A (en) * | 2023-03-17 | 2023-04-14 | 中汽研新能源汽车检验中心(天津)有限公司 | Method for testing and evaluating working condition efficiency of electric drive assembly of equivalent whole vehicle |
| CN115962962B (en) * | 2023-03-17 | 2024-01-26 | 中汽研新能源汽车检验中心(天津)有限公司 | Method for testing and evaluating working condition efficiency of electric drive assembly of equivalent whole vehicle |
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