CN103345163A - Battery management system performance test platform and testing method based on semi-physical simulation - Google Patents
Battery management system performance test platform and testing method based on semi-physical simulation Download PDFInfo
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Abstract
The invention relates to a battery management system performance test platform and a testing method based on semi-physical simulation and belongs to the field of systems. According to the battery management system performance test platform and the testing method based on semi-physical simulation, the problems existing in the aspects of effectiveness, practicality, accuracy, generality and comprehensiveness of an existing battery management system testing device and method are solved. A BMS to be tested and a simulation control and emulating unit of the test platform are connected with a CAN bus. A signal output end of an insulation resistance testing device, a signal output end of an insulation voltage resistant testing device, a signal output end of a 24-channel single-body voltage simulator, a signal output end of a high-voltage source, a signal output end of a current source and current reversing module, a signal output end of a high-accuracy temperature environment box, a signal output end of an insulation resistance simulator and a signal output end of a direct current power source are respectively connected with corresponding signal input ends of the BMS to be tested. The BMS to be tested is arranged in a high-low-temperature operational testing box. The testing method comprises the steps of safety testing and the comprehensive testing of state parameter measuring accuracy, SOC estimating accuracy, a battery fault diagnostic function, a heat management function and environment adapting performance and is used for testing the battery management system.
Description
Technical field
The present invention relates to battery management system performance test platform and method of testing, belong to the system testing field.
Background technology
Because problems such as resource consumption and environmental pollution, orthodox car many drawbacks in use display, electric automobile causes characteristics such as energy source is extensive, environmental pollution is little as new-energy automobile a kind of and obtains people's extensive concern, energy storing device on the electric automobile---power battery pack, it is the critical component of electric automobile, overcharges, crosses the serviceable life that all can make electric battery when situation such as putting when power battery pack runs into and shorten and may safety problem occur and injure vehicle and occupant's safety.Be the protection power battery pack, and prevent that security incident from taking place that people realize monitoring and management to the electric battery state by install battery management system additional to power battery pack.Have a lot of producers to research and develop the battery management system product at present, but the varied spread in performance of these product functions is uneven.
In order to guarantee battery management system product reliability service on electric automobile, after the product design moulding, according to relevant regulations it is done strict pattern check, before product export, do the check of dispatching from the factory and be very important.For the quality that guarantees the battery management system product reaches a standard, the electric automobile industry standard QC/T897-2011 that 2012 car Ministrys of Industry and Information in July work out formally implements, and this standard pin has proposed detailed test method and technical requirement to the battery management system product.Yet also do not have the battery management system testing apparatus corresponding with this standard at present, at present domestic battery management system testing apparatus can not realize the full test to the dissimilar battery management systems of different manufacturers based on the individual event testing tool.
Vehicle College, Tongji Univ. has designed BMS hardware based on xPC in the ring test system, and this system uses MATLAB simulink to generate vehicle real time execution code, by the CAN bus instruction is transferred on the xPC target machine and carries out.The xPC target machine comes the electric parameter of the thermoelectric information correspondence of simulated battery bag by the control signal generator, and passes to BMS, and BMS gathers these information and compares with the standard volume in the xPC target machine, draws the BMS measuring error.But this invention test macro does not have real simulation to go out the thermoelectric information of electric battery, but provides with the form of electric parameter, with this can't test b MS product (comprising sensor interior) the quality of overall performance.
BJ University of Aeronautics ﹠ Astronautics has applied for " battery managing system testing platform " patent of invention in 2010 cars June, and the test platform described in this patent is made up of master control computer and Duo Tai instrument, by the CAN bus testing tool is coupled together.This test platform is assessed the combination property of BMS by every duty of simulated battery group.But there is the great situation of traffic load in the traffic rate of CAN bus limited (usually maximum communication rate be 1Mbps), and can't realizes the synchronous output of instrument when the multiplexing CAN bus of multiple instruments; Lack the high-accuracy data acquisition module in the test platform, cause the precision of platform self to guarantee like this; Test platform does not have general BMS to upload the analytic method of data; Content measurement is few.Therefore this test platform practicality, precision, versatility, comprehensive aspect existing problems.
American National instrument company (National Instruments Corp. is called for short NI) has issued a kind of brand-new opening, modular instrument bus specification---PXI.PXI is that PCI is in the expansion (PCI eXtensions for Instrumentation) of instrument field, it with the pci bus technical development of CompactPCI normalized definition become to be suitable for testing, measurement and the machinery of data acquisition applications, electric and software specifications, thereby formed new virtual instrument architecture.The purpose of working out the PXI standard is ideally to combine for the ratio of performance to price advantage of Desktop PC is expanded towards necessity of instrument field with pci bus, forms a kind of virtual instrument test platform of main flow.
This novel modularized instrument system of PXI has increased the proven technique specification and requirement in the pci bus Kernel Technology and has formed.It is by increasing the requirement that the local bus that is used for the synchronous triggering bus of many plates and reference clock, is used for carrying out the star trigger bus of accurate timing and be used for high speed communication between adjacent block satisfies test and measures the user.The PXI standard in the CompactPCI mechanical specification, increased environmental testing and initiatively cooling require with the interoperability that guarantees multi-vendor product and the property easy of integration of system.PXI is with Microsoft
TMWindows NT
TMAnd Microsoft
TMWindows95
TMBe defined as its standard software framework, and require all instrument modules all must have the WIN32 device driver of writing by the VISA standard, make PXI become a kind of system-level standard, the assurance system is easy to integrated and use, thereby further reduces final user's development cost.
Summary of the invention
The present invention seeks to validity, practicality, precision, versatility, comprehensive aspect existing problems in order to solve existing battery management system testing apparatus and method, a kind of battery management system performance test platform and method of testing based on hardware-in-the-loop simulation is provided.
Battery management system performance test platform based on hardware-in-the-loop simulation of the present invention, it comprises Simulation Control and analogue unit, voltage detection module, current detection module, Insulation Resistance Tester, dielectric voltage withstand tester, 24 passage monomer voltage simulators, high-tension electricity potential source, current source and electric current inverting module, high-precision temperature environmental cabinet, insulation resistance simulator, direct supply and high cold operation test box;
Described mesuring battary management system BMS is by CAN bus and Simulation Control and analogue unit realization data interaction;
The high tension voltage signal output part of described high-tension electricity potential source connects the high tension voltage signal input part of voltage detection module;
The branch pressure voltage signal output part of described voltage detection module connects Simulation Control and analogue unit branch pressure voltage signal input part;
24 channel voltage signal output parts of described 24 passage monomer voltage simulators connect 24 channel voltage signal input parts of Simulation Control and analogue unit;
The current signal output end of described current source and electric current inverting module connects the current signal input end of current detection module;
The voltage signal output end of described current detection module connects the voltage signal input end of Simulation Control and analogue unit;
The control of described Simulation Control and analogue unit and megger test signal I/O connect the megger test control signal input/output terminal of Insulation Resistance Tester;
The control of described Simulation Control and analogue unit and dielectric voltage withstand test signal I/O connect the dielectric voltage withstand test control signal input/output terminal of dielectric voltage withstand tester;
The control of described Simulation Control and analogue unit and answer signal I/O connect control and the answer signal input/output terminal of high-precision temperature environmental cabinet;
The high-precision temperature signal output part of described high-precision temperature environmental cabinet connects the high-precision temperature signal input part of Simulation Control and analogue unit;
The control of described Simulation Control and analogue unit and dc power signal I/O connect control and the direct supply control signal input/output terminal of direct supply;
The control of described Simulation Control and analogue unit and signal I/O connect control and the signal input output end of high low temperature running test case;
The signal output part of described Insulation Resistance Tester, dielectric voltage withstand tester, 24 passage monomer voltage simulators, high-tension electricity potential source, current source and electric current inverting module, high-precision temperature environmental cabinet, insulation resistance simulator and direct supply is connected with the corresponding signal input part of mesuring battary management system BMS respectively;
Described mesuring battary management system BMS is arranged in the high cold operation test box.
Described Simulation Control and analogue unit comprise PXI controller, PXI-CAN communication card unit, PXI multichannel voltage collecting unit, PXI communication unit and PXI temperature collecting cell;
Described PXI controller, PXI-CAN communication card unit, PXI multichannel voltage collecting unit, PXI communication unit and PXI temperature collecting cell all are connected on the PXI bus;
The voltage acquisition control signal output terminal of described PXI multichannel voltage collecting unit is the voltage acquisition control signal output terminal of Simulation Control and analogue unit;
The current acquisition control signal output terminal of described PXI multichannel voltage collecting unit is the current acquisition control signal output terminal of Simulation Control and analogue unit;
The temperature acquisition control signal output terminal of described PXI temperature collecting cell is the temperature acquisition control signal output terminal of Simulation Control and analogue unit.
Based on the method for testing of the battery management system performance test platform of hardware-in-the-loop simulation, described method of testing comprises: battery management system BMS to be measured is carried out the security test of megger test and the test of dielectric voltage withstand performance;
The process of described megger test is: the PXI controller arranges the megger test condition: comprise test duration T, test voltage U, insulation resistance low alarm limit value R and startup and read the control signal of insulating resistance value, and be sent to the PXI communication unit by the PXI bus, by the PXI communication unit this control signal is sent on the Insulation Resistance Tester again, start Insulation Resistance Tester, make Insulation Resistance Tester output test voltage U give mesuring battary management system BMS, read insulating resistance value that Insulation Resistance Tester records and warning message simultaneously to the PXI communication unit, the PXI communication unit is uploaded to the PXI controller by the PXI bus, and battery management system BMS to be measured is carried out megger test;
If the PXI controller receives warning message in the test process, the PXI controller then records warning message and insulating resistance value, judges that the insulation resistance of mesuring battary management system BMS is unusual;
If the PXI controller does not receive warning message in the test process, then the time to be tested arrives T, the PXI controller sends the Insulation Resistance Tester stop signal, and the insulating resistance value that records is back to the PXI controller by PXI communication card unit, and the insulation resistance of judging mesuring battary management system BMS is normal, relevant information, test condition and the test result of the mesuring battary management system BMS of record test, this test is finished;
The process of described dielectric voltage withstand performance test is: the PXI controller dielectric voltage withstand performance test condition is set: comprise test duration T, test voltage U, the control signal of leakage current upper limit I and startup dielectric voltage withstand tester is sent to the PXI communication unit by the PXI bus, by the PXI communication unit this control signal is sent on the dielectric voltage withstand tester again, start the dielectric voltage withstand tester, make dielectric voltage withstand tester output test voltage U give mesuring battary management system BMS, read the warning message of the leakage current value of mesuring battary management system BMS and test simultaneously to the PXI communication unit, and then be uploaded to the PXI controller by the PXI bus, battery management system BMS to be measured is carried out the test of dielectric voltage withstand performance;
If the PXI controller receives warning message in the test process, the PXI controller then records warning message and leakage current value, and judges that the dielectric voltage withstand performance of mesuring battary management system BMS is unusual;
If the PXI controller does not receive warning message in the test process, then the time to be tested arrives test duration T, the PXI controller sends dielectric voltage withstand tester stop signal, and the leakage current value that records is back to the PXI controller by PXI communication card unit, and the dielectric voltage withstand performance of judging mesuring battary management system BMS is normal, mesuring battary management system BMS information, test condition and the test result of record test, this test is finished.
The advantage of this test invention is:
Platform comprises the condition hardware of emulation electric battery hardware and BMS working environment etc., and the method for testing of platform is based on the hardware-in-the-loop simulation of electric battery, can guarantee the validity of BMS test and comprehensive;
The Simulation Control of platform and communication unit have adopted the structure of PXI bus and many integrated circuit boards, because the traffic rate of PXI bus can reach 132*8Mbps, can guarantee synchronism that data are obtained and the synchronism of instrument output;
Platform is furnished with the high-accuracy data acquisition module, comprises the collection of 24 passage monomer voltages, total voltage, charging and discharging currents, 12 road temperature values, has guaranteed the precision of platform self;
Method of testing comprises that BMS uploads the analytic method of data, has improved the versatility of test platform.
Description of drawings
Fig. 1 is the structural representation of the battery management system performance test platform based on hardware-in-the-loop simulation of the present invention.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, it comprises Simulation Control and analogue unit 1, voltage detection module 4, current detection module 5, Insulation Resistance Tester 8, dielectric voltage withstand tester 9,24 passage monomer voltage simulators 10, high-tension electricity potential source 11, current source and electric current inverting module 12, high-precision temperature environmental cabinet 13, insulation resistance simulator 14, direct supply 15 and high cold operation test box 16;
Described mesuring battary management system BMS2 realizes data interaction by CAN bus 3 and Simulation Control and analogue unit 1;
The high tension voltage signal output part of described high-tension electricity potential source 11 connects the high tension voltage signal input part of voltage detection module 4;
The branch pressure voltage signal output part of described voltage detection module 4 connects Simulation Control and analogue unit 1 branch pressure voltage signal input part;
Described voltage detection module 4 is carried out dividing potential drop for the high voltage of the high-tension electricity potential source 11 that will receive;
24 channel voltage signal output parts of described 24 passage monomer voltage simulators 10 connect 24 channel voltage signal input parts of Simulation Control and analogue unit 1;
The current signal output end of described current source and electric current inverting module 12 connects the current signal input end of current detection module 5;
The voltage signal output end of described current detection module 5 connects the voltage signal input end of Simulation Control and analogue unit 1;
Described current detection module 5 converts voltage signal to and is sent to Simulation Control and analogue unit 1 for the current source that will receive and the current signal of electric current inverting module 12;
The control of described Simulation Control and analogue unit 1 and megger test signal I/O connect the megger test control signal input/output terminal of Insulation Resistance Tester 8;
The control of described Simulation Control and analogue unit 1 and dielectric voltage withstand test signal I/O connect the dielectric voltage withstand test control signal input/output terminal of dielectric voltage withstand tester 9;
The control of described Simulation Control and analogue unit 1 and answer signal I/O connect control and the answer signal input/output terminal of high-precision temperature environmental cabinet 13;
The high-precision temperature signal output part of described high-precision temperature environmental cabinet 13 connects the high-precision temperature signal input part of Simulation Control and analogue unit 1;
The control of described Simulation Control and analogue unit 1 and dc power signal I/O connect control and the direct supply control signal input/output terminal of direct supply 14;
The signal output part of described Insulation Resistance Tester 8, dielectric voltage withstand tester 9,24 passage monomer voltage simulators 10, high-tension electricity potential source 11, current source and electric current inverting module 12, high-precision temperature environmental cabinet 13, insulation resistance simulator 14 and direct supply 15 is connected with the corresponding signal input part of mesuring battary management system BMS2 respectively;
Described mesuring battary management system BMS2 is arranged in the high cold operation test box 16, and described high cold operation test box 16 is for the manufacture of all temps environment.
Embodiment two: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further embodiment one, the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, described Simulation Control and analogue unit 1 comprise PXI controller 1-1, PXI-CAN communication card unit 1-2, PXI multichannel voltage collecting unit 1-3, PXI communication unit 1-4 and PXI temperature collecting cell 1-5;
Described PXI controller 1-1, PXI-CAN communication card unit 1-2, PXI multichannel voltage collecting unit 1-3, PXI communication unit 1-4 and PXI temperature collecting cell 1-5 all are connected on the PXI bus;
Described PXI communication unit 1-4 comprises the multiple communication interface of USB, GPIB, RS232, RS485, RS422, Ethernet, digital I/O, with the communication requirement of the different communication interface of the Insulation Resistance Tester 8 in the adaptive testing platform～high low temperature running test case 16.
The voltage acquisition control signal output terminal of described PXI multichannel voltage collecting unit 1-3 is the voltage acquisition control signal output terminal of Simulation Control and analogue unit 1;
The current acquisition control signal output terminal of described PXI multichannel voltage collecting unit 1-3 is the current acquisition control signal output terminal of Simulation Control and analogue unit 1.
Embodiment three: present embodiment is described below in conjunction with Fig. 1, the method of testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, described method of testing comprises: battery management system BMS2 to be measured is carried out the security test of megger test and the test of dielectric voltage withstand performance;
The process of described megger test is: PXI controller 1-1 arranges the megger test condition: comprise test duration T, test voltage U, insulation resistance low alarm limit value R and startup and read the control signal of insulating resistance value, and be sent to PXI communication unit 1-4 by the PXI bus, by PXI communication unit 1-4 this control signal is sent on the Insulation Resistance Tester 8 again, start Insulation Resistance Tester 8, make Insulation Resistance Tester 8 output test voltage U give mesuring battary management system BMS2, read insulating resistance value that Insulation Resistance Tester 8 records and warning message simultaneously to PXI communication unit 1-4, PXI communication unit 1-4 is uploaded to PXI controller 1-1 by the PXI bus, and battery management system BMS2 to be measured is carried out megger test;
If PXI controller 1-1 receives warning message in the test process, PXI controller 1-1 then records warning message and insulating resistance value, judges that the insulation resistance of mesuring battary management system BMS2 is unusual;
If PXI controller 1-1 does not receive warning message in the test process, then the time to be tested arrives T, PXI controller 1-1 sends Insulation Resistance Tester 8 stop signals, and the insulating resistance value that records is back to PXI controller 1-1 by PXI communication card unit 1-4, and the insulation resistance of judging mesuring battary management system BMS2 is normal, relevant information, test condition and the test result of the mesuring battary management system BMS2 of record test, this test is finished;
The process of described dielectric voltage withstand performance test is: PXI controller 1-1 arranges dielectric voltage withstand performance test condition: comprise test duration T, test voltage U, the control signal of leakage current upper limit I and startup dielectric voltage withstand tester 9 is sent to PXI communication unit 1-4 by the PXI bus, by PXI communication unit 1-4 this control signal is sent on the dielectric voltage withstand tester 9 again, start dielectric voltage withstand tester 9, make dielectric voltage withstand tester 9 output test voltage U give mesuring battary management system BMS2, read the warning message of the leakage current value of mesuring battary management system BMS2 and test simultaneously to PXI communication unit 1-4, and then be uploaded to PXI controller 1-1 by the PXI bus, battery management system BMS2 to be measured is carried out the test of dielectric voltage withstand performance;
If PXI controller 1-1 receives warning message in the test process, PXI controller 1-1 then records warning message and leakage current value, and judges that the dielectric voltage withstand performance of mesuring battary management system BMS2 is unusual;
If PXI controller 1-1 does not receive warning message in the test process, then the time to be tested arrives test duration T, PXI controller 1-1 sends dielectric voltage withstand tester stop signal, and the leakage current value that records is back to PXI controller 1-1 by PXI communication card unit 1-4, and the dielectric voltage withstand performance of judging mesuring battary management system BMS2 is normal, mesuring battary management system BMS2 information, test condition and the test result of record test, this test is finished.
Embodiment four: present embodiment is described below in conjunction with Fig. 1, present embodiment further specifies the embodiment triple-cropping, the method of testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, this method of testing also comprise the state parameter measuring accuracy test to battery management system BMS2 to be measured: this method of testing is:
At first, by the PXI controller 1-1 in Simulation Control and the analogue unit 1 according to the simulated conditions that sets in advance: the counting of electric battery quantity of state, the bound of quantity of state, total test duration T and the information of single test point test duration, or the mode that reads battery charging and discharging model curve file generates monomer voltage, total voltage, electric current, the temperature of electric battery, the emulated data of insulation resistance, and with its battery model as the test of state parameter measuring accuracy;
PXI controller 1-1 is sent to steering order on the PXI communication unit 1-4 by the PXI bus then, control the various status informations that 24 passage monomer voltage simulators 10, high-tension electricity potential source 11, current source and electric current inverting module 12, high-precision temperature environmental cabinet 13 and insulation resistance simulator 14 come the emulation electric battery by the communication interface of PXI communication unit 1-4 again, and above-mentioned various status informations are offered mesuring battary management system BMS2, mesuring battary management system BMS2 measures these status informations, and its measured value is uploaded on the PXI controller 1-1 in real time;
PXI controller 1-1 gathers 24 passage monomer voltage values of 24 passage monomer voltage simulators 10 and the total voltage value of high-tension electricity potential source 11 by the voltage detection module 4 that is connected with PXI multichannel voltage collecting unit 1-3;
The charging and discharging currents value that PXI controller 1-1 gathers current source and inverting module 12 by the current detection module 5 that is connected with PXI multichannel voltage collecting unit 1-3;
PXI controller 1-1 is by gathering the temperature value of a plurality of positions in the high-precision temperature environmental cabinet 13 with PXI temperature collecting cell 1-5;
With 24 passage monomer voltage values, total voltage value, charging and discharging currents value and temperature value as standard volume;
Then, PXI controller 1-1 compares received measured value and the standard volume of being uploaded by mesuring battary management system BMS2, ask for error and the record of mesuring battary management system BMS2 measured value in real time, after measurement is finished, the PXI controller 1-1 of Simulation Control and analogue unit 1 deletes the head and the tail data in single test point test interval, the measured value of uploading with the mesuring battary management system BMS2 that rejects in the test data and the asynchronous gross error value that causes of standard volume, ask for the maximal value of the Error Absolute Value of residue measured value, minimum value and mean value are with the good and bad condition of these three values as evaluation mesuring battary management system BMS2 state parameter measuring accuracy performance; Average absolute errors is more big, thinks that the measuring error of mesuring battary management system BMS2 is more big, and performance is more poor; The maximal value of Error Absolute Value and minimum value deviation average are more far away, think that the uncertainty of measurement of mesuring battary management system BMS2 is more big, and performance is more poor.
The temperature measurement accuracy test is comparatively special, reason is that the temperature-rise period of high-precision temperature environmental cabinet 13 needs the time, and each is variant for the response speed of different temperatures sensor, therefore in the process to the temperature measurement accuracy test, after PXI controller 1-1 has set the temperature value of a temperature test point, PXI controller 1-1 will compare the actual temperature value of high-precision temperature environmental cabinet 13 and the setting value of incubator, if both equate then to think that temperature field in the environmental cabinet 13 is with stable, carry out the temperature measuring data of BMS and record and the comparison of standard volume, the temperature measurement accuracy of final analysis BMS to be measured this moment.
Embodiment five: present embodiment is described below in conjunction with Fig. 1, present embodiment further specifies the embodiment triple-cropping, the method of testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, this method of testing also comprise the test of SOC estimation precision;
Described SOC estimation precision method of testing is: at first test special-purpose operating mode according to real vehicle accumulator cell charging and discharging operating mode or SOC, use the battery charging and discharging machine that battery cell/module sample is discharged and recharged, the magnitude of voltage of the battery cell in Simulation Control and the analogue unit 1 real time record charge and discharge process, current value, battery temperature value and SOC value and synchronized relation each other, after treating that charge and discharge process finishes, the relation of monomer voltage channel data by the multiple of needed monomer voltage port number N expanded, obtain the monomer voltage value of N passage, wherein N is positive integer; As emulation electric battery model, obtain the SOC standard value with this;
Then, PXI controller 1-1 is by controlling 24 passage monomer voltage simulators 10 with the communication interface of PXI communication unit 1-4, current source and electric current inverting module 12, high-precision temperature environmental cabinet 13 is the monomer voltage value of N passage of output synchronously, current value and temperature value measure for mesuring battary management system BMS2, after measurement is finished the resulting SOC estimated value of mesuring battary management system BMS2 is uploaded on the PXI controller 1-1 of Simulation Control and analogue unit 1, PXI controller 1-1 should value and the SOC standard value compare, ask for the SOC estimation error of mesuring battary management system BMS2 in real time, when Real-time Error greater than 10% the time, get two adjacent equal time intervals of Real-time Error, three SOC error point E before and after obtaining
SOC1, E
SOC2, E
SOC3, (E
SOC2-E
SOC1) be S1, (E
SOC3-E
SOC1)/2 are S2, the absolute value of S2/S1 is K, the K value was less than 1 o'clock, think that the SOC estimation error is constantly reducing, and the K value is more little, the tracking velocity of SOC estimation is more fast, the quality of estimating mesuring battary management system BMS2SOC estimated performance with size and SOC estimation error two aspects thereof of K value after to be tested the finishing; The K value is little, and the SOC estimation error is little, and then the SOC estimated performance of Ce Shi BMS is excellent.
Embodiment six: present embodiment is described below in conjunction with Fig. 1, present embodiment further specifies the embodiment triple-cropping, the method of testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, this method of testing also comprise the fault diagnosis test;
The method of this fault diagnosis test is: at first by generate according to the fault alarm condition of BMS that the monomer voltage of electric battery too high and low with excessivelying, total voltage is too high among the PXI controller 1-1 in Simulation Control and the analogue unit 1 and low excessively, electric current is excessive and emulated data too small, that temperature is too high and the mistake is low and insulation resistance is weak, as the battery failures model;
The communication interface of PXI-CAN communication card unit 1-2 by Simulation Control and analogue unit 1 is controlled 24 passage monomer voltage simulators 10 then, high-tension electricity potential source 11, current source and electric current inverting module 12, high-precision temperature environmental cabinet 13 and insulation resistance simulator 14 emulation battery voltages are too high and low excessively, total voltage is too high and low excessively, electric current is excessive and too small, temperature is too high and low excessively, status information when insulation resistance is weak, and these status informations are offered mesuring battary management system BMS2, mesuring battary management system BMS2 measures these status informations and the PXI bus communication integrated circuit board unit 1-2 that passes through that fault diagnosis result is real-time is uploaded to PXI controller 1-1, the fault alarm information that PXI controller 1-1 record mesuring battary management system BMS2 uploads and record emulation electric battery output fault value after upload warning message with BMS mistiming, this mistiming is called the response time of corresponding failure diagnosis.If the failure message of uploading is correct and the response time weak point thinks that then BMS state parameter measuring accuracy performance is excellent.
Embodiment seven: present embodiment is described below in conjunction with Fig. 1, present embodiment further specifies the embodiment triple-cropping, the method of testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, this method of testing also comprises the environmental adaptation property testing; Described environmental suitability method of testing is controlled the temperature value of high cold operation test box 16 output settings and the BMS operating voltage of direct supply 15 for the PXI controller 1-1 by Simulation Control and analogue unit 1 by the communication interface of PXI communication unit 1-4, PXI controller 1-1 is with the working environment of this emulation mesuring battary management system BMS2, after configuring mesuring battary management system BMS2 working environment, state parameter measuring accuracy, SOC estimation function, the fault diagnosis functions of test mesuring battary management system BMS2.
Embodiment seven: present embodiment is described below in conjunction with Fig. 1, present embodiment further specifies the embodiment triple-cropping, the method of testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of present embodiment, this method of testing comprises that also BMS uploads the parsing test of data, and this method of testing is:
The PXI controller 1-1 of Simulation Control and analogue unit 1 goes out the data corresponding physical value that BMS uploads according to ID, start bit, data bits, reduction coefficient A, the side-play amount B information analysis of message content in the BMS communication protocol; Be specially and upload the ID of magnitude of physical quantity Y in the message and start bit and data bits according to BMS and upload from BMS and take out corresponding data X, then Y=A*X+B the message.
Specific embodiment:
Simulation Control in the test platform hardware unit and analogue unit 1 are to adopt the PXI system of NI company to realize.PXI communication unit (1-4) comprises PXI-8433 (485 communication card), PXI-8432 (232 communication card), PXI-8115 (PXI controller, comprise network interface, GPIB communication interface), the communication interface of PXI communication unit (1-4) realizes and safety test hardware (8,9) emulation electric battery hardware (10,11,12,13,14), the connection between environmental baseline hardware (15, the 16) communication interface.
Monomer voltage simulator (10) in the emulation electric battery hardware adopts the BAT-NEHP25J of Foochow nebula company, and this instrument adopts the RS232 communication interface, is connected with the PXI-8432 communication card of PXI system.But the monomer voltage value of 25 passages of this instrument emulation output electric battery.
High-voltage power supply (11) in the emulation electric battery hardware adopts the BHK1000-40MG of Kepco company, and this instrument adopts the GPIB communication interface, with the PXIe-8115 controller board card connection of PXI system.But the total voltage value of this instrument emulation output electric battery 0-1000V.
Current source (12) in the emulation electric battery hardware adopts the 6680A of Agilent company, and this instrument adopts the GPIB communication interface, with the PXIe-8115 controller board card connection of PXI system.Electric current reversing arrangement (12) adopts 4 H bridge commutating circuits that solid-state relay is built.But both combine emulation electric battery 0 ~ ± charging and discharging currents of 600A.
High-precision temperature environmental cabinet (13) in the emulation electric battery hardware adopts the MC811T of Espec company, and this instrument adopts the RS422 communication interface, is connected with the PXI-8433 communication card of PXI system.But the temperature of this instrument emulation electric battery-80 ℃～180 ℃.
Insulation resistance simulator (14) in the emulation electric battery hardware adopts the LI24-1A85 dry-reed relay of Meder company to form the insulation resistance analog network as high-voltage switch gear element and a plurality of power resistor, adopt the RS485 communication interface, be connected with the PXI-8433 communication card of PXI system.But the power brick positive and negative busbar of this simulator emulation electric battery 5K ~ 4M is to the insulation resistance on vehicle body ground.
The BMS direct supply (15) of environmental baseline hardware adopts the XG60-14 of AMETEK company, and this instrument adopts the RS232 communication interface, is connected with the PXI-8432 communication card of PXI system.This instrument can provide the DC source of 0 ~ 60V, 0 ~ 14A to give BMS to be measured.
The high low temperature running test case (16) of environmental baseline hardware adopts Chongqing four to reach the CTP410FA of company, and this instrument adopts Ethernet interface, with the PXIe-8115 controller board card connection of PXI system.This instrument can provide-50 ℃ ~ 150 ℃ BMS operating ambient temperature.
CAN communication card in the PXI-CAN communication card unit (1-2) adopts the PXI-8512/2 of NI company, and maximum baud rate is 1Mbits/s.
PXI multichannel voltage collecting unit (1-3) adopts 4 PXIe-4300 integrated circuit boards of NI company, the PXIe-4300 integrated circuit board is the full isolation voltage analog input cards of 8 passages, range is 0～± 1V/ ± 2V/ ± 5V/ ± 10V is adjustable, the monomer voltage value of 24 passages, high tension voltage value are gathered by 4 PXIe-4300 integrated circuit boards synchronously through magnitude of voltage, the magnitude of voltage of current value after current detection circuit I-V conversion of the voltage division processing of voltage detection module, can obtain high-precision emulation battery voltage, current information after converting.
PXI temperature collecting cell (1-5) adopts PXIe-4357 temperature acquisition integrated circuit board and 12 tunnel high precision PT100 temperature sensors to form.The realization of all method of testings is finished by software and the hardware cooperation of BMS test platform.Can realize the semi-automation of test process.
Claims (8)
1. based on the battery management system performance test platform of hardware-in-the-loop simulation, it is characterized in that it comprises Simulation Control and analogue unit (1), voltage detection module (4), current detection module (5), Insulation Resistance Tester (8), dielectric voltage withstand tester (9), 24 passage monomer voltage simulators (10), high-tension electricity potential source (11), current source and electric current inverting module (12), high-precision temperature environmental cabinet (13), insulation resistance simulator (14), direct supply (15) and high cold operation test box (16);
Described mesuring battary management system BMS (2) realizes data interaction by CAN bus (3) and Simulation Control and analogue unit (1);
The high tension voltage signal output part of described high-tension electricity potential source (11) connects the high tension voltage signal input part of voltage detection module (4);
The branch pressure voltage signal output part of described voltage detection module (4) connects Simulation Control and analogue unit (1) branch pressure voltage signal input part;
24 channel voltage signal output parts of described 24 passage monomer voltage simulators (10) connect 24 channel voltage signal input parts of Simulation Control and analogue unit (1);
The current signal output end of described current source and electric current inverting module (12) connects the current signal input end of current detection module (5);
The voltage signal output end of described current detection module (5) connects the voltage signal input end of Simulation Control and analogue unit (1);
The control of described Simulation Control and analogue unit (1) and megger test signal I/O connect the megger test control signal input/output terminal of Insulation Resistance Tester (8);
The control of described Simulation Control and analogue unit (1) and dielectric voltage withstand test signal I/O connect the dielectric voltage withstand test control signal input/output terminal of dielectric voltage withstand tester (9);
The control of described Simulation Control and analogue unit (1) and answer signal I/O connect control and the answer signal input/output terminal of high-precision temperature environmental cabinet (13);
The high-precision temperature signal output part of described high-precision temperature environmental cabinet (13) connects the high-precision temperature signal input part of Simulation Control and analogue unit (1);
The control of described Simulation Control and analogue unit (1) and dc power signal I/O connect control and the direct supply control signal input/output terminal of direct supply (14);
The control of described Simulation Control and analogue unit (1) and signal I/O connect control and the signal input output end of high low temperature running test case (16);
The signal output part of described Insulation Resistance Tester (8), dielectric voltage withstand tester (9), 24 passage monomer voltage simulators (10), high-tension electricity potential source (11), current source and electric current inverting module (12), high-precision temperature environmental cabinet (13), insulation resistance simulator (14) and direct supply (15) is connected with the corresponding signal input part of mesuring battary management system BMS (2) respectively;
Described mesuring battary management system BMS (2) is arranged in the high cold operation test box (16).
2. according to the described battery management system performance test platform based on hardware-in-the-loop simulation of claim 1, it is characterized in that described Simulation Control and analogue unit (1) comprise PXI controller (1-1), PXI-CAN communication card unit (1-2), PXI multichannel voltage collecting unit (1-3), PXI communication unit (1-4) and PXI temperature collecting cell (1-5);
Described PXI controller (1-1), PXI-CAN communication card unit (1-2), PXI multichannel voltage collecting unit (1-3), PXI communication unit (1-4) and PXI temperature collecting cell (1-5) all are connected on the PXI bus;
The voltage acquisition control signal output terminal of described PXI multichannel voltage collecting unit (1-3) is the voltage acquisition control signal output terminal of Simulation Control and analogue unit (1);
The current acquisition control signal output terminal of described PXI multichannel voltage collecting unit (1-3) is the current acquisition control signal output terminal of Simulation Control and analogue unit (1);
The temperature acquisition control signal output terminal of described PXI temperature collecting cell (1-5) is the temperature acquisition control signal output terminal of Simulation Control and analogue unit (1).
3. application rights requires the method for testing of 2 described battery management system performance test platforms based on hardware-in-the-loop simulation, it is characterized in that described method of testing comprises: battery management system BMS to be measured (2) is carried out the security test of megger test and the test of dielectric voltage withstand performance;
The process of described megger test is: PXI controller (1-1) arranges the megger test condition: comprise test duration T, test voltage U, insulation resistance low alarm limit value R and startup and read the control signal of insulating resistance value, and be sent to PXI communication unit (1-4) by the PXI bus, by PXI communication unit (1-4) this control signal is sent on the Insulation Resistance Tester (8) again, start Insulation Resistance Tester (8), make Insulation Resistance Tester (8) output test voltage U give mesuring battary management system BMS (2), read insulating resistance value that Insulation Resistance Tester (8) records and warning message simultaneously to PXI communication unit (1-4), PXI communication unit (1-4) is uploaded to PXI controller (1-1) by the PXI bus, and battery management system BMS to be measured (2) is carried out megger test;
If PXI controller (1-1) receives warning message in the test process, PXI controller (1-1) then records warning message and insulating resistance value, judges that the insulation resistance of mesuring battary management system BMS (2) is unusual;
If PXI controller (1-1) does not receive warning message in the test process, then the time to be tested arrives T, PXI controller (1-1) sends Insulation Resistance Tester (8) stop signal, and the insulating resistance value that records is back to PXI controller (1-1) by PXI communication card unit (1-4), and the insulation resistance of judging mesuring battary management system BMS (2) is normal, relevant information, test condition and the test result of the mesuring battary management system BMS (2) of record test, this test is finished;
The process of described dielectric voltage withstand performance test is: PXI controller (1-1) dielectric voltage withstand performance test condition is set: comprise test duration T, test voltage U, the control signal of leakage current upper limit I and startup dielectric voltage withstand tester (9) is sent to PXI communication unit (1-4) by the PXI bus, by PXI communication unit (1-4) this control signal is sent on the dielectric voltage withstand tester (9) again, start dielectric voltage withstand tester (9), make dielectric voltage withstand tester (9) output test voltage U give mesuring battary management system BMS (2), read the warning message of the leakage current value of mesuring battary management system BMS (2) and test simultaneously to PXI communication unit (1-4), and then be uploaded to PXI controller (1-1) by the PXI bus, battery management system BMS to be measured (2) is carried out the test of dielectric voltage withstand performance;
If PXI controller (1-1) receives warning message in the test process, PXI controller (1-1) then records warning message and leakage current value, and judges that the dielectric voltage withstand performance of mesuring battary management system BMS (2) is unusual;
If PXI controller (1-1) does not receive warning message in the test process, then the time to be tested arrives test duration T, PXI controller (1-1) sends dielectric voltage withstand tester stop signal, and the leakage current value that records is back to PXI controller (1-1) by PXI communication card unit (1-4), and the dielectric voltage withstand performance of judging mesuring battary management system BMS (2) is normal, mesuring battary management system BMS (2) information, test condition and the test result of record test, this test is finished.
4. according to the method for testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of claim 3, it is characterized in that this method of testing also comprises the state parameter measuring accuracy test to battery management system BMS to be measured (2): this method of testing is:
At first, by the PXI controller (1-1) in Simulation Control and the analogue unit (1) according to the simulated conditions that sets in advance: the counting of electric battery quantity of state, the bound of quantity of state, total test duration T and the information of single test point test duration, or the mode that reads battery charging and discharging model curve file generates monomer voltage, total voltage, electric current, the temperature of electric battery, the emulated data of insulation resistance, and with its battery model as the test of state parameter measuring accuracy;
PXI controller (1-1) is sent to steering order on the PXI communication unit (1-4) by the PXI bus then, control 24 passage monomer voltage simulators (10) by the communication interface of PXI communication unit (1-4) again, high-tension electricity potential source (11), current source and electric current inverting module (12), high-precision temperature environmental cabinet (13) and insulation resistance simulator (14) come the various status informations of emulation electric battery, and above-mentioned various status informations are offered mesuring battary management system BMS (2), mesuring battary management system BMS (2) measures these status informations, and its measured value is uploaded on the PXI controller (1-1) in real time;
PXI controller (1-1) is gathered 24 passage monomer voltage values of 24 passage monomer voltage simulators (10) and the total voltage value of high-tension electricity potential source (11) by the voltage detection module (4) that is connected with PXI multichannel voltage collecting unit (1-3);
PXI controller (1-1) is gathered the charging and discharging currents value of current source and inverting module (12) by the current detection module (5) that is connected with PXI multichannel voltage collecting unit (1-3);
PXI controller (1-1) is by gathering the temperature value of a plurality of positions in the high-precision temperature environmental cabinet (13) with PXI temperature collecting cell (1-5);
With 24 passage monomer voltage values, total voltage value, charging and discharging currents value and temperature value as standard volume;
Then, PXI controller (1-1) is compared received measured value and the standard volume of being uploaded by mesuring battary management system BMS (2), ask for error and the record of mesuring battary management system BMS (2) measured value in real time, after measurement is finished, head and the tail data in the single test point test interval of PXI controller (1-1) deletion of Simulation Control and analogue unit (1), the measured value of uploading with the mesuring battary management system BMS (2) that rejects in the test data and the asynchronous gross error value that causes of standard volume, ask for the maximal value of the Error Absolute Value of residue measured value, minimum value and mean value are with the good and bad condition of these three values as evaluation mesuring battary management system BMS (2) state parameter measuring accuracy performance; Average absolute errors is more big, thinks that the measuring error of mesuring battary management system BMS (2) is more big, and performance is more poor; The maximal value of Error Absolute Value and minimum value deviation average are more far away, think that the uncertainty of measurement of mesuring battary management system BMS (2) is more big, and performance is more poor.
5. according to the method for testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of claim 3, it is characterized in that this method of testing also comprises the test of SOC estimation precision;
Described SOC estimation precision method of testing is: at first test special-purpose operating mode according to real vehicle accumulator cell charging and discharging operating mode or SOC, use the battery charging and discharging machine that battery cell/module sample is discharged and recharged, the magnitude of voltage of the battery cell in Simulation Control and analogue unit (1) the real time record charge and discharge process, current value, battery temperature value and SOC value and synchronized relation each other, after treating that charge and discharge process finishes, the relation of monomer voltage channel data by the multiple of needed monomer voltage port number N expanded, obtain the monomer voltage value of N passage, wherein N is positive integer; As emulation electric battery model, obtain the SOC standard value with this;
Then, PXI controller (1-1) is by controlling 24 passage monomer voltage simulators (10) with the communication interface of PXI communication unit (1-4), current source and electric current inverting module (12), high-precision temperature environmental cabinet (13) is exported the monomer voltage value of N passage synchronously, current value and temperature value measure for mesuring battary management system BMS (2), after measurement is finished the resulting SOC estimated value of mesuring battary management system BMS (2) is uploaded on the PXI controller (1-1) of Simulation Control and analogue unit (1), PXI controller (1-1) should value and the SOC standard value compare, ask for the SOC estimation error of mesuring battary management system BMS (2) in real time, when Real-time Error greater than 10% the time, get two adjacent equal time intervals of Real-time Error, three SOC error point E before and after obtaining
SOC1, E
SOC2, E
SOC3, (E
SOC2-E
SOC1) be S1, (E
SOC3-E
SOC1)/2 are S2, the absolute value of S2/S1 is K, the K value was less than 1 o'clock, think that the SOC estimation error is constantly reducing, and the K value is more little, the tracking velocity of SOC estimation is more fast, the quality of estimating mesuring battary management system BMS (2) SOC estimated performance with size and SOC estimation error two aspects thereof of K value after to be tested the finishing; The K value is little, and the SOC estimation error is little, and then the SOC estimated performance of Ce Shi BMS is excellent.
6. according to the method for testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of claim 3, it is characterized in that this method of testing also comprises the fault diagnosis test;
The method of this fault diagnosis test is: at first by generate according to the fault alarm condition of BMS that the monomer voltage of electric battery too high and low with excessivelying, total voltage is too high in the PXI controller (1-1) in Simulation Control and the analogue unit (1) and low excessively, electric current is excessive and emulated data too small, that temperature is too high and the mistake is low and insulation resistance is weak, as the battery failures model;
The communication interface of the PXI-CAN communication card unit (1-2) by Simulation Control and analogue unit (1) is controlled 24 passage monomer voltage simulators (10) then, high-tension electricity potential source (11), current source and electric current inverting module (12), high-precision temperature environmental cabinet (13) and insulation resistance simulator (14) emulation battery voltage are too high and low excessively, total voltage is too high and low excessively, electric current is excessive and too small, temperature is too high and low excessively, status information when insulation resistance is weak, and these status informations are offered mesuring battary management system BMS (2), mesuring battary management system BMS (2) measures these status informations and the PXI bus communication integrated circuit board unit (1-2) that passes through that fault diagnosis result is real-time is uploaded to PXI controller (1-1), the fault alarm information that PXI controller (1-1) record mesuring battary management system BMS (2) uploads and record emulation electric battery output fault value after upload warning message with BMS mistiming, this mistiming is called the response time of corresponding failure diagnosis.If the failure message of uploading is correct and the response time weak point thinks that then BMS state parameter measuring accuracy performance is excellent.
7. according to the method for testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of claim 3, it is characterized in that this method of testing also comprises the environmental adaptation property testing; Described environmental suitability method of testing is for controlling the temperature value of high cold operation test box (16) output setting and the BMS operating voltage of direct supply (15) by the PXI controller (1-1) of Simulation Control and analogue unit (1) by the communication interface of PXI communication unit (1-4), PXI controller (1-1) is with the working environment of this emulation mesuring battary management system BMS (2), after configuring mesuring battary management system BMS (2) working environment, state parameter measuring accuracy, SOC estimation function, the fault diagnosis functions of test mesuring battary management system BMS (2).
8. according to the method for testing of the described battery management system performance test platform based on hardware-in-the-loop simulation of claim 3, it is characterized in that this method of testing comprises that also BMS uploads the parsing test of data, this method of testing is:
The PXI controller (1-1) of Simulation Control and analogue unit (1) goes out the data corresponding physical value that BMS uploads according to ID, start bit, data bits, reduction coefficient A, the side-play amount B information analysis of message content in the BMS communication protocol; Be specially and upload the ID of magnitude of physical quantity Y in the message and start bit and data bits according to BMS and upload from BMS and take out corresponding data X, then Y=A*X+B the message.
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