CN103809120A - Testing system and method for electric part of power system for weak hybrid electric vehicle - Google Patents
Testing system and method for electric part of power system for weak hybrid electric vehicle Download PDFInfo
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Abstract
The invention discloses a testing system and a method for electric part of power system for weak hybrid electric vehicle, and the system comprises a BSG motor module provided with a BSG motor and a BSG motor controller; a dynamometer module provided with a dynamometer, a measuring and control instrument and a torque and speed sensor, and a transducer or an inverter; a power module provided with a power storage battery, a battery management system, a program control power supply and a program control power supply controller; an auxiliary electric system load simulation module provided with a DC/DC convertor and an auxiliary electric system load; an upper computer module. The method adopts the half object simulation principle, the dynamometer simulates the engine for doing test to the BSG motor module and does the service life test for the electric part of weak hybrid power system at different working conditions that the BSG motor starts the engine, the engine drives the BSG motor for generating, regenerative braking, idle parking while the battery drives the load, the system and method can reduce the test cost, shorten the test period for vehicle performance and raise the developing speed for product.
Description
Technical field
The invention belongs to Weak hybrid power automobile experimental test technical field, be specifically related to a kind of test macro and method of Weak mixed power automobile power system electric component.
Background technology
The maximum difference of Weak hybrid power automobile and traditional fuel-engined vehicle is in the time that vehicle meets halt condition; engine oil-break is shut down; and in the time that accelerator pedal is stepped on again; BSG motor or intelligent start-stop motor just can automatic actuation engines; thereby reduce oil consumption and the discharge in vehicle idling stage; improve the starting performance of engine, reach the object of energy-conserving and environment-protective.Therefore,, compared with the research and development of orthodox car, the research and development of Weak hybrid power automobile and test mainly concentrate on the aspects such as electric motor and controller, electrokinetic cell, braking energy recovery, kinematic train and car load coupling.
Compared with orthodox car, on Weak hybrid power automobile, the requirement of power system critical component is very high, for example motor, battery and belt will be by the durability tests of 500,000 times and 240,000 kilometers, if adopt traditional testing method completely, can cause product development cycle and cost very high, therefore in car load and parts Development and Production process, be badly in need of a kind of simulated test facility and improve tempo of development, reduce cost of development.
The Chinese invention patent that publication number is CN101261190 at present discloses a kind of hybrid power automobile controller life-span test system and method for testing, in this test macro, BSG controller is placed in the environment of high humility and high low-temperature circulating and accepts life test, and the supply voltage of BSG controller also will carry out circular wave in a very wide scope.Like this, by relatively test of short time of BSG controller, can estimate the potential mission life of BSG controller.But this patent is only tested the controller life-span in design verification and production Qualify Phase, cannot carry out control system performance test, cannot be embodied as Control System Design provides design considerations and carries out design verification, to reach the object that reduces design risk.
In addition, publication number is that the Chinese invention patent of CN102023635A discloses a kind of micro hybrid vehicle controller performance method of testing and system, the signal that it gathers the electric signal of BSG controller and programmable power supply and be applied to the resistive torque of BSG motor by hydraulic means with computer control, tests BSG motor characteristic.This invention is convenient in the R&D process of micro hybrid vehicle, the technical scheme of research and development be tested, and being embodied as Control System Design provides design considerations and carry out design verification, to reach the object that reduces design risk.But this hydraulic loading mechanism control system complexity, HYDRAULIC CONTROL SYSTEM precision is limited, resistive torque reaction is insensitive, therefore this invention is applicable to adopting two cover systems to simulate respectively BSG electric system generating operation mode and electronic operating mode, but for a set of BSG electric system, realize circulation between electronic starting and feedback generating and change more difficult.
Summary of the invention
Fundamental purpose of the present invention is that the shortcoming that overcomes prior art is with not enough, a kind of test macro of Weak mixed power automobile power system electric component is provided, not fuel consumption of this system, not emission, has advantages of that cost is low, energy-conserving and environment-protective, according to the principle of work of mild hybrid power system and critical component and feature, by simulated engine working condition, carry out the performance test of BSG electric system and test, can shorten the test period of vehicle performance, improve the speed of product development.
Another object of the present invention is to provide a kind of method of testing of the test macro based on above-mentioned Weak mixed power automobile power system electric component.The method adopts the principle of hardware-in-the-loop simulation, can realize mild hybrid power system electric component battery in the time that BSG electric motor starting engine, driven by engine BSG electric power generation, regenerative braking, idling are stopped is supplied separately to the life experiment under the various operating modes such as the attached electrical system loads of electric drive.
Object of the present invention realizes by following technical scheme: a kind of test macro of Weak mixed power automobile power system electric component, comprise BSG motor module, dynamometer machine module, electrical source of power module and upper computer module, wherein BSG motor module, dynamometer machine module, electrical source of power module are carried out communication by data line and upper computer module respectively; Described BSG motor module comprises BSG motor and BSG electric machine controller; Described dynamometer machine module comprises dynamometer machine and measurement and control instrument, the belt wheel of BSG motor one end is connected with the belt wheel of dynamometer machine output shaft by driving belt, measurement and control instrument is for the mode of operation of dynamometer machine is controlled, and dynamometer machine carries out experimental test for simulated engine to BSG motor module; Described electrical source of power module comprises power accumulator, battery management system, is used to test macro to power; Described upper computer module, for receiving the running parameter that each module transmits, is processed parameter, then exports steering order by data line to each module.The present invention utilizes dynamometer machine simulated engine to carry out experimental test to BSG motor module, does not need BSG motor to be arranged in actual engine, thereby avoids in experimental test process, producing a large amount of fuel consumes and toxic emission, realizes the object of energy-conserving and environment-protective.
Preferably, described test macro also comprises attached electrical system loads analog module, this module comprises DC/DC transducer and attached electrical system loads, attached electrical system loads is connected with electrical source of power module by DC/DC transducer, while being used for simulating idling parking by the attached electrical system loads working condition of electrical source of power module for power supply.
Preferably, described BSG motor module, dynamometer machine module, electrical source of power module, attached electrical system loads analog module all carry out communication by CAN bus and upper computer module.Thereby make co-ordination between each module, greatly reduce the quantity of rat tail, avoid signal to disturb the impact on test result, make experimental test result more accurate.Certainly, in actual applications, each module also can be passed through as required the existing connected mode such as RS232, RS485, LIN line or rigid line and connect host computer.
Preferably, described electrical source of power module also comprises programmable power supply and programmable power supply controller, and power accumulator is connected with programmable power supply by the mode of common DC bus; Described programmable power supply controller is controlled for output voltage, electric current to programmable power supply, the power accumulator of simulation different size.In test process, program control electrical source of power and power accumulator all can be used as the power supply of test macro.This function is only being tested for BSG motor, and tested each BSG motor operating voltage specification is very useful when different, because do not need the expense of flower great number to buy power accumulator and the battery management system of dimension.
Preferably, described dynamometer machine is electric dynamometer, is connected on electrical network by frequency converter or inverter.At dynamometer machine, during by BSG electric motor starting, when dynamometer machine is operated in generating state, the electricity of generation is feedback grid after frequency converter or inverter conversion.In the time that dynamometer machine drives BSG electric power generation, dynamometer machine is operated in motoring condition, and dynamometer machine is powered by AC network.
Further, described dynamometer machine module also comprises a torque and speed sensors, the rotating speed inputing or outputing for Real-Time Monitoring dynamometer machine and torque.
A kind of method of testing based on above-mentioned test macro, dynamometer machine simulated engine carries out experimental test to BSG motor module, electrical source of power module is that test macro is powered, upper computer module by data line by the rotating speed of target of default dynamometer machine, target torque, target load sends to measurement and control instrument, measurement and control instrument is controlled the mode of operation of dynamometer machine, the belt wheel of dynamometer machine output shaft drives the belt wheel of BSG motor one end to rotate by driving belt, thereby realize BSG electric motor starting engine, dynamometer machine simulated engine drives BSG electric power generation, the test of regenerative braking operating mode.
Concrete, the working condition measurement of described BSG electric motor starting engine, method of testing is:
(1-1) upper computer module sets in advance dynamometer machine simulated engine and is operated in resistive torque curve and the proceed-to-send rotating speed under state of starting operating, and is transferred to the measurement and control instrument of dynamometer machine module;
(1-2) BSG motor works on power, and drags dynamometer machine running, and measurement and control instrument is the resistive torque under state of starting operating according to resistive torque curve adjustment dynamometer machine simulated engine, simulated automotive starting process;
Once (1-3) resistive torque of current dynamometer machine conforms to resistive torque curve, further judge whether current dynamometer machine rotating speed is greater than proceed-to-send rotating speed, if so, explanation is started successfully, finishes test, otherwise, starting failure is described, finish test.
Concrete, described dynamometer machine simulated engine drives BSG electric power generation working condition measurement, and method of testing is:
(2-1) upper computer module sets in advance dynamometer machine simulated engine and is operated in driving torque under generating operation mode and the limit value of speed curves, BSG motor output voltage and electric current, and driving torque and speed curves is transferred to the measurement and control instrument of dynamometer machine module;
(2-2) measurement and control instrument drives dynamometer machine according to the driving torque of setting and speed curves running, and then via belt drives BSG electric power generation;
(2-3) BSG motor by the BSG motor discharge loop in power battery module by electric energy input power battery module, the discharge current of power supply and voltage in upper computer detection power battery module, and with the limit value comparison of default BSG motor output voltage and electric current, if exceed limit value, cut off BSG motor discharge loop, finish test, otherwise, repeating step (2-2).
Concrete, described regenerative braking working condition measurement, test mode is:
(3-1) limit value of inertia torque, BSG motor output voltage and electric current when upper computer module sets in advance dynamometer machine simulated engine and is operated in inertia torque curve, dynamometer machine simulated engine under damped condition and starts driving rotating speed before braking and braking, and by inertia torque curve transmission the measurement and control instrument to dynamometer machine module;
(3-2) measurement and control instrument drives dynamometer machine to turn round some minutes according to the driving stabilization of speed starting before braking of setting;
(3-3) measurement and control instrument drives dynamometer machine according to the running of inertia torque curve, simultaneously via belt drives BSG electric power generation;
(3-4) BSG motor by the BSG motor discharge loop in power battery module by electric energy input power battery module, the discharge current of power supply and voltage in upper computer detection power battery module, and with the limit value comparison of default BSG motor output voltage and electric current, if exceed limit value, cut off BSG motor discharge loop, finish test, otherwise, repeating step (3-3).
Concrete, when described method of testing also comprises idling parking, electrical source of power module is carried out the test of power supply separately to attached electrical system loads analog module, and method of testing is:
(4-1) working method of electrical source of power module is set, selects to adopt programmable power supply to work independently or power accumulator works independently;
If (4-2) adopt power accumulator to supply separately electrical testing: power accumulator is powered to attached electrical system loads, the attached electrical system loads work of upper computer module control, DC/DC transducer feeds back attached electrical system loads working current and voltage data to upper computer module, and upper computer module also gathers the current SOC value of power accumulator simultaneously; Once the SOC of power accumulator (State of Charge, state-of-charge) be reduced to preset value, close attached electrical system loads, stop test, attached electrical system loads working current and voltage curve in the time that record test is lasting and test process;
If (4-3) adopt programmable power supply to supply separately electrical testing: set the every circulating analog energy content of battery of programmable power supply attenuation coefficient, cycle index and loop termination condition, programmable power supply simulation power accumulator is powered to attached electrical system loads, the attached electrical system loads work of upper computer module control, DC/DC transducer feeds back attached electrical system loads working current and voltage data to upper computer module, and upper computer module also gathers the current SOC value of power accumulator that programmable power supply is simulated simultaneously; Once programmable power supply cycle index, loop termination condition meet the condition of setting, and the SOC of the electrokinetic cell that programmable power supply is simulated is reduced to preset value, close attached electrical system loads, stop test, attached electrical system loads working current and voltage curve in the time that record test is lasting and test process.
Further, described programmable power supply is interior with discharge resistance and discharge control switch, upper computer module is obtained the switching of discharge control switch in the switching, programmable power supply of the duty of programmable power supply, the voltage and current that programmable power supply is set, programmable power supply by programmable power supply controller, host computer obtains the duty of power accumulator by battery management system, what power accumulator was set discharges and recharges end condition, voltage limit, electric current limit and temperature limit, opens and closes the discharge circuit of battery; In the time adopting programmable power supply as the power supply of BSG motor, BSG machine operation is in the time of power generation mode, and closed discharge control switch, discharges electric energy by discharge resistance; In the time adopting programmable power supply and power accumulator jointly as power supply, disconnect discharge control switch, BSG machine operation is in the time of power generation mode, and the electric weight that sends is reclaimed by power accumulator.Thereby not only can effectively reclaim the energy of BSG motor, can also meet the test need for electricity of the BSG motor and controller of different operating voltage specification, realize the object whether check BSG motor module mates with electrical source of power module.
Preferably, the mode of operation of described dynamometer machine comprises positive rotary-die type or reversing mode, permanent torque mode or permanent rotating speed pattern, starts and stop.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
1, the present invention adopts the principle of hardware-in-the-loop simulation, realize mild hybrid power system electric component at BSG electric motor starting engine, driven by engine BSG electric power generation, regenerative braking, when idling is stopped, battery supplies separately the life experiment under the various operating modes such as the attached electrical system loads of electric drive, the present invention can directly carry out comprehensive experimental test to the electric component performance under the various operating modes of Weak hybrid power automobile, also can test Weak mixed power automobile power system critical component routine tests simultaneously, reduce test expensive together with engine, shorten the test period of vehicle performance, improve the speed of product development.
2, in apparatus of the present invention, utilize dynamometer machine simulated engine to carry out experimental test to BSG motor module, do not need BSG motor to be arranged in actual engine, thereby avoid in experimental test process, producing a large amount of fuel consumes and toxic emission, improved experimental enviroment.And prior art is assembled to BSG motor on engine and carries out experimental test, cause fuel consume and exhaust emission problem.
3, the present invention not only can carry out experimental test to BSG motor and controller, can also check the match condition of BSG motor module and electrical source of power module, even can also carry out independent experimental test to electrical source of power module, whether check electrical source of power module meets the requirement of the performance parameters such as power, life-span, charging performance and the discharge performance of BSG motor module to electrical source of power.Prior art is only tested BSG motor and controller, and power battery module in close relations is not with it carried out to matching test, type selecting, design and the test of the Selection and Design of BSG motor and test and power battery module are carried out respectively, and while easily causing later stage car load to be tested, two unmatched risks of module are higher.
4, in the present invention, upper computer module is connected with dynamometer machine module, BSG motor module, electrical source of power module by CAN bus, make co-ordination between each module, greatly reduced the quantity of rat tail simultaneously, and then avoid signal to disturb the impact on test result, experimental test result is more accurate.Prior art or directly adopt wire to connect, or adopt multiple bus system to connect, system wire harness quantity is many, serious interference.
5, in the present invention, adopt programmable power supply and controller thereof, power accumulator and management system thereof as electrical source of power module, wherein programmable power supply can meet the experiment test demand of the BSG motor of different operating voltage specification, programmable power supply adopts the mode of common DC bus to be connected with power accumulator, by disconnecting the discharge switch of programmable power supply, the energy discharging while utilizing Battery recycling BSG electric power generation, reclaim thereby realize energy, reach energy-conservation effect.Prior art or only have programmable power supply, thus can not effectively reclaim the energy of BSG motor, can not carry out the matching test of power accumulator and BSG motor; Or only dynamic accumulator, thereby can not meet the test need for electricity of the BSG motor and controller of different operating voltage specification.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention;
Fig. 2 is the working condition measurement process flow diagram of BSG electric motor starting engine;
Fig. 3 is that dynamometer machine simulated engine drives BSG electric power generation working condition measurement process flow diagram;
Fig. 4 is regenerative braking working condition measurement process flow diagram;
Fig. 5 is that electrical source of power module is carried out the test flow chart of power supply separately to attached electrical system loads analog module.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
As shown in Figure 1, a kind of test macro of Weak mixed power automobile power system electric component comprises (1) BSG motor module, comprises BSG motor and BSG electric machine controller; (2) dynamometer machine module, comprises electric dynamometer, frequency converter/inverter, measurement and control instrument and torque and speed sensors.(3) electrical source of power module, comprises power accumulator, battery management system, programmable power supply and programmable power supply controller.(4) attached electrical system loads analog module, comprises DC/DC transducer and electric air-conditioning compressor (attached electrical system loads) etc.(5) upper computer module, for carrying out data acquisition, data processing, control output and showing output.
Wherein, BSG motor module, dynamometer machine module, electrical source of power module are carried out communication by CAN bus and upper computer module respectively.The belt wheel of BSG motor one end is connected with the belt wheel of dynamometer machine output shaft by driving belt, measurement and control instrument is for controlling the mode of operation of dynamometer machine, and mode of operation described here comprises positive rotary-die type or reversing mode, permanent torque mode or permanent rotating speed pattern, starts and stop.Dynamometer machine carries out experimental test for simulated engine to BSG motor module.Dynamometer machine is electric dynamometer, is connected on electrical network by frequency converter, powered by AC network, or the electricity feedback grid after inverter converts producing when dynamometer machine is operated in to generating state.Dynamometer machine module also comprises a torque and speed sensors, the rotating speed inputing or outputing for Real-Time Monitoring dynamometer machine and moment of torsion.
Described electrical source of power module is used to test macro to power.Power accumulator is connected with programmable power supply by the mode of common DC bus; Described programmable power supply controller is controlled for output voltage, electric current to programmable power supply, the power accumulator of simulation different size.In test process, program control electrical source of power and power accumulator all can be used as the power supply of test macro.Described programmable power supply is interior with discharge resistance and discharge control switch, upper computer module is obtained the switching of discharge resistance in the switching, programmable power supply of the duty of programmable power supply, the voltage and current that programmable power supply is set, programmable power supply by programmable power supply controller, host computer obtains the duty of power accumulator by battery management system, what power accumulator was set discharges and recharges end condition, voltage limit, electric current limit and temperature limit, opens and closes the discharge circuit of battery; In the time adopting programmable power supply as the power supply of BSG motor, closed discharge control switch, BSG machine operation, in the time of power generation mode, discharges electric energy by discharge resistance; In the time adopting programmable power supply and power accumulator jointly as power supply, disconnect discharge control switch, BSG machine operation is in the time of power generation mode, and the electric weight that sends is reclaimed by power accumulator.Thereby not only can effectively reclaim the energy of BSG motor, can also meet the test need for electricity of the BSG motor and controller of different operating voltage specification, realize the object whether check BSG motor module mates with electrical source of power module.
Method of testing based on above-mentioned test macro in the present embodiment is as follows: dynamometer machine simulated engine carries out experimental test to BSG motor module, electrical source of power module is that test macro is powered, upper computer module by data line by the rotating speed of target of default dynamometer machine, target torque, target load sends to measurement and control instrument, measurement and control instrument is controlled the mode of operation of dynamometer machine, the belt wheel of dynamometer machine output shaft drives the belt wheel of BSG motor one end to rotate by driving belt, thereby realize BSG electric motor starting engine, dynamometer machine simulated engine drives BSG electric power generation, regenerative braking, the test that when idling is stopped, battery supplies separately electric drive air-conditioning equipment operating mode.
As shown in Figure 2, the working condition measurement of described BSG electric motor starting engine, method of testing is:
At host computer, initiation parameter is set; the Protection parameters that programmable power supply operating voltage, dynamometer machine simulated engine are operated in resistive torque curve under state of starting operating and proceed-to-send rotating speed, battery management system is set, and initialization parameters is transferred to the measurement and control instrument of dynamometer machine module, programmable power supply controller and the battery management system of power battery module by CAN bus mode.Described measurement and control instrument regulates the resistive torque of electric dynamometer simulated engine under state of starting operating by frequency converter.Described dynamometer machine connects a torque and speed sensors and a belt pulley by mechanical connecting device, and belt pulley is connected with the belt pulley of BSG motor by belt.Described torque and speed sensors detects the rotating speed of dynamometer machine simulated engine and is applied to the resistive torque of BSG motor pulley, and rotating speed and dtc signal is passed to data acquisition and the data processing unit of upper computer module.BSG motor works on power, and drags dynamometer machine running, simulated automotive starting process.Host computer is according to test target and data processed result, send the measurement and control instrument of steering order to dynamometer machine module, measurement and control instrument regulates output speed and the torque of electric dynamometer by frequency converter, and then change is applied to the load of BSG motor, in test, dynamometer machine drags lower rotating speed at BSG motor and rises to gradually setting value, and state of starting operating finishes.
As shown in Figure 3, described dynamometer machine simulated engine drives BSG electric power generation working condition measurement, and method of testing is:
At host computer, initiation parameter is set; the Protection parameters that programmable power supply operating voltage, dynamometer machine simulated engine are operated in driving torque under generating operation mode and speed curves, battery management system is set, and initiation parameter is transferred to the measurement and control instrument of dynamometer machine module, programmable power supply controller and the battery management system of power battery module by CAN bus mode.Described measurement and control instrument control transducer drive electric dynamometer simulated engine is according to the torque and rotational speed running of setting, simultaneously via belt drives BSG electric power generation.In described power battery module, be provided with BSG motor discharge loop, in the time of BSG electric power generation, connect this loop, this loop is connected respectively with power accumulator with programmable power supply.Programmable power supply inside is with discharge resistance and discharge control switch, and the electric energy of BSG motor output is by after BSG motor discharge loop, then discharges through the discharge resistance of programmable power supply, by programmable power supply controller to host computer feedback discharge electric current and voltage.Also can cut off programmable power supply, absorb the electric energy of BSG motor output by power accumulator, electric current from battery management system to the charging of host computer feedback battery and voltage by.No matter adopt any mode among both, the voltage and current size of BSG motor output is all subject to the monitoring of host computer, when exceeding while setting limit value, will cut off BSG motor discharge loop, finishes generating operation mode and tests.
As shown in Figure 4, described regenerative braking working condition measurement, test mode is:
At host computer, initiation parameter is set; inertia torque, the Protection parameters of battery management system, dynamometer machine simulated engine when programmable power supply operating voltage, dynamometer machine simulated engine are set start driving rotating speed before braking and braking are operated in the inertia torque curve under damped condition, and initiation parameter is transferred to the measurement and control instrument of dynamometer machine module, programmable power supply controller and the battery management system of power battery module by CAN bus mode.Inertia torque when described measurement and control instrument control transducer drive electric dynamometer simulated engine is simulated automobile brake according to the stabilization of speed running of setting after 1～5 minute reduces rotating speed gradually, simultaneously via belt drives BSG electric power generation.Described programmable power supply inside is with discharge resistance and discharge control switch, the electric energy of BSG motor output can be discharged by the discharge resistance of controlling programmable power supply, by programmable power supply controller to host computer feedback discharge electric current and voltage.Also can cut off programmable power supply, absorb the electric energy of BSG motor output by power accumulator, electric current from battery management system to the charging of host computer feedback battery and voltage by.No matter adopt any mode among both, the voltage and current size of BSG motor output is all subject to the monitoring of host computer, when exceeding while setting limit value, will cut off BSG motor discharge loop, end regenerative braking working condition measurement.
As shown in Figure 5, when described idling is stopped, electrical source of power module is carried out the test of power supply separately to attached electrical system loads analog module, and method of testing is:
Arrange at host computer initiation parameter, programmable power supply running parameter, electrokinetic cell work and Protection parameters are set.The working method of electrical source of power module is set, and selection adopts programmable power supply to work independently or power accumulator works independently.
Power accumulator supplies separately electrical testing: power accumulator is connected with DC/DC transducer through battery management system, DC/DC transducer is connected with electric air-conditioning compressor, upper computer module control electric air-conditioning compressor operating, DC/DC transducer feedback electric air-conditioning compressor operating electric current and voltage data are to upper computer module,, host computer also gathers the current SOC value of power accumulator simultaneously.In the time that the SOC of battery is reduced to setting value, close electric air-conditioning compressor, stop test, record electric air-conditioning compressor operating electric current and voltage curve in time of test duration and process of the test.
Programmable power supply is separately for electrical testing: programmable power supply simulation power accumulator is powered to electric air-conditioning compressor, programmable power supply is connected with DC/DC transducer through battery management system, DC/DC transducer is connected with electric air-conditioning compressor, by upper computer module control electric air-conditioning compressor operating, DC/DC transducer feedback electric air-conditioning compressor operating electric current and voltage data are to upper computer module, in the time that the SOC of battery is reduced to setting value, close compressor of air conditioner, stop test, record electric air-conditioning compressor operating electric current and voltage curve in time of test duration and process of the test.Power supply is different separately from adopting power accumulator, while adopting the power supply of programmable power supply simulation electrokinetic cell to carry out attached electrical system loads analog module driving force test, can set every cycle battery energy attenuation coefficient, cycle index and loop termination condition, and then accumulator is carried out to simulation test for the mission life of the attached electrical system loads such as electric drive electric air-conditioning compressor separately, while having avoided adopting actual accumulator to test because of need to battery carry out repeatedly to discharge and recharge the test period that may cause long, the problems such as power accumulator damage, shorten test period, save testing cost.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
1. the test macro of a Weak mixed power automobile power system electric component, it is characterized in that, comprise BSG motor module, dynamometer machine module, electrical source of power module and upper computer module, wherein BSG motor module, dynamometer machine module, electrical source of power module are carried out communication by data line and upper computer module respectively; Described BSG motor module comprises BSG motor and BSG electric machine controller; Described dynamometer machine module comprises dynamometer machine and measurement and control instrument, the belt wheel of BSG motor one end is connected with the belt wheel of dynamometer machine output shaft by driving belt, measurement and control instrument is for the mode of operation of dynamometer machine is controlled, and dynamometer machine carries out experimental test for simulated engine to BSG motor module; Described electrical source of power module comprises power accumulator, battery management system, is used to test macro to power; Described upper computer module, for receiving the running parameter that each module transmits, is processed parameter, then exports steering order by data line to each module.
2. the test macro of Weak mixed power automobile power system electric component according to claim 1, it is characterized in that, described test macro also comprises attached electrical system loads analog module, this module comprises DC/DC transducer and attached electrical system loads, and attached electrical system loads is connected with electrical source of power module by DC/DC transducer.
3. the test macro of Weak mixed power automobile power system electric component according to claim 1, it is characterized in that, described electrical source of power module also comprises programmable power supply and programmable power supply controller, and power accumulator is connected with programmable power supply by the mode of common DC bus; Described programmable power supply controller is controlled for output voltage, electric current to programmable power supply, the power accumulator of simulation different size.
4. the test macro of Weak mixed power automobile power system electric component according to claim 2, it is characterized in that, described BSG motor module, dynamometer machine module, electrical source of power module, attached electrical system loads analog module all carry out communication by CAN bus and upper computer module;
Described dynamometer machine is electric dynamometer, is connected on electrical network by frequency converter or inverter;
Described dynamometer machine module also comprises a torque and speed sensors, the rotating speed inputing or outputing for Real-Time Monitoring dynamometer machine and torque.
5. the method for testing of the test macro of the Weak mixed power automobile power system electric component based on described in claim 1-4 any one, it is characterized in that, dynamometer machine simulated engine carries out experimental test to BSG motor module, electrical source of power module is that test macro is powered, upper computer module by data line by the rotating speed of target of default dynamometer machine, target torque, target load sends to measurement and control instrument, measurement and control instrument is controlled the mode of operation of dynamometer machine, the belt wheel of dynamometer machine output shaft drives the belt wheel of BSG motor one end to rotate by driving belt, thereby realize BSG electric motor starting engine, dynamometer machine simulated engine drives BSG electric power generation, the test of regenerative braking operating mode.
6. method of testing according to claim 5, is characterized in that, the working condition measurement of described BSG electric motor starting engine, and method of testing is:
(1-1) upper computer module sets in advance dynamometer machine simulated engine and is operated in resistive torque curve and the proceed-to-send rotating speed under state of starting operating, and is transferred to the measurement and control instrument of dynamometer machine module;
(1-2) BSG motor works on power, and drags dynamometer machine running, and measurement and control instrument is the resistive torque under state of starting operating according to resistive torque curve adjustment dynamometer machine simulated engine, simulated automotive starting process;
Once (1-3) resistive torque of current dynamometer machine conforms to resistive torque curve, further judge whether current dynamometer machine rotating speed is greater than proceed-to-send rotating speed, if so, explanation is started successfully, finishes test, otherwise, starting failure is described, finish test.
7. method of testing according to claim 5, is characterized in that, described dynamometer machine simulated engine drives BSG electric power generation working condition measurement, and method of testing is:
(2-1) upper computer module sets in advance dynamometer machine simulated engine and is operated in driving torque under generating operation mode and the limit value of speed curves, BSG motor output voltage and electric current, and driving torque and speed curves is transferred to the measurement and control instrument of dynamometer machine module;
(2-2) measurement and control instrument drives dynamometer machine according to the driving torque of setting and speed curves running, and then via belt drives BSG electric power generation;
(2-3) BSG motor by the BSG motor discharge loop in power battery module by electric energy input power battery module, the discharge current of power supply and voltage in upper computer detection power battery module, and with the limit value comparison of default BSG motor output voltage and electric current, if exceed limit value, cut off BSG motor discharge loop, finish test, otherwise, repeating step (2-2).
8. method of testing according to claim 5, is characterized in that, described regenerative braking working condition measurement, and test mode is:
(3-1) limit value of inertia torque, BSG motor output voltage and electric current when upper computer module sets in advance dynamometer machine simulated engine and is operated in inertia torque curve, dynamometer machine simulated engine under damped condition and starts driving rotating speed before braking and braking, and by inertia torque curve transmission the measurement and control instrument to dynamometer machine module;
(3-2) measurement and control instrument drives dynamometer machine to turn round some minutes according to the driving stabilization of speed starting before braking of setting;
(3-3) measurement and control instrument drives dynamometer machine according to the running of inertia torque curve, simultaneously via belt drives BSG electric power generation;
(3-4) BSG motor by the BSG motor discharge loop in power battery module by electric energy input power battery module, the discharge current of power supply and voltage in upper computer detection power battery module, and with the limit value comparison of default BSG motor output voltage and electric current, if exceed limit value, cut off BSG motor discharge loop, finish test, otherwise, repeating step (3-3).
9. method of testing according to claim 1, is characterized in that, when described method of testing also comprises idling parking, electrical source of power module is carried out the test of power supply separately to attached electrical system loads analog module, and method of testing is:
(4-1) working method of electrical source of power module is set, selects to adopt programmable power supply to work independently or power accumulator works independently;
If (4-2) adopt power accumulator to supply separately electrical testing: power accumulator is powered to attached electrical system loads, the attached electrical system loads work of upper computer module control, DC/DC transducer feeds back attached electrical system loads working current and voltage data to upper computer module, and upper computer module also gathers the current SOC value of power accumulator simultaneously; Once the SOC of power accumulator is reduced to preset value, close attached electrical system loads, stop test, attached electrical system loads working current and voltage curve in the time that record test is lasting and test process;
If (4-3) adopt programmable power supply to supply separately electrical testing: set the every circulating analog energy content of battery of programmable power supply attenuation coefficient, cycle index and loop termination condition, programmable power supply simulation power accumulator is powered to attached electrical system loads, the attached electrical system loads work of upper computer module control, DC/DC transducer feeds back attached electrical system loads working current and voltage data to upper computer module, and upper computer module also gathers the current SOC value of power accumulator that programmable power supply is simulated simultaneously; Once programmable power supply cycle index, loop termination condition meet the condition of setting, and the SOC of the electrokinetic cell that programmable power supply is simulated is reduced to preset value, close attached electrical system loads, stop test, attached electrical system loads working current and voltage curve in the time that record test is lasting and test process.
10. method of testing according to claim 9, it is characterized in that, described programmable power supply is interior with discharge resistance and discharge control switch, upper computer module is obtained the switching of discharge control switch in the switching, programmable power supply of the duty of programmable power supply, the voltage and current that programmable power supply is set, programmable power supply by programmable power supply controller, host computer obtains the duty of power accumulator by battery management system, what power accumulator was set discharges and recharges end condition, voltage limit, electric current limit and temperature limit, opens and closes the discharge circuit of battery; In the time adopting programmable power supply as the power supply of BSG motor, BSG machine operation is in the time of power generation mode, and closed discharge control switch, discharges electric energy by discharge resistance; In the time adopting programmable power supply and power accumulator jointly as power supply, disconnect discharge control switch, BSG machine operation is in the time of power generation mode, and the electric weight that sends is reclaimed by power accumulator;
The mode of operation of described dynamometer machine comprises positive rotary-die type or reversing mode, permanent torque mode or permanent rotating speed pattern, starts and stop.
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