CN103345163B - Based on battery management system Testing Platform and the method for testing of hardware-in-the-loop simulation - Google Patents
Based on battery management system Testing Platform and the method for testing of hardware-in-the-loop simulation Download PDFInfo
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Abstract
Based on battery management system Testing Platform and the method for testing of hardware-in-the-loop simulation, belong to system regions, the present invention is in order to solve validity, practicality, precision, versatility, the comprehensive aspect existing problems of existing battery management system testing apparatus and method.The mesuring battary management system BMS of test platform and Simulation Control and analogue unit are connected in CAN; 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 are connected to the corresponding signal input part of mesuring battary management system BMS respectively with the signal output part of direct supply; Mesuring battary management system BMS is arranged in high/low temperature testing results case.Described method of testing comprises: the integrated test facility of security test, state parameter measuring accuracy, SOC estimation precision, battery failures diagnostic function, heat management Function and environment conformability.For test battery management system.
Description
Technical field
The present invention relates to battery management system Testing Platform and method of testing, belong to system testing field.
Background technology
Due to the problem such as resource consumption and environmental pollution, orthodox car many drawbacks in use display, electric automobile causes the features such as energy source is extensive, environmental pollution is little as new-energy automobile a kind of and obtains the extensive concern of people, energy storing device on electric automobile---power battery pack, it is the critical component of electric automobile, overcharges, crosses and all can make shorten the serviceable life of electric battery when the situation such as to put and may occur safety problem and injure the safety of vehicle and occupant when power battery pack runs into.For protection power battery pack, and prevent security incident from occurring, people are by installing battery management system additional to realize the monitor and managment to battery state to power battery pack.Have a lot of producer to have developed battery management system product at present, but the varied spread in performance of these product functions is uneven.
In order to ensure battery management system product reliability service on electric automobile, after product design is shaping, according to relevant regulations, strict type inspection being done to it, before product export, doing factory inspection be very important.In order to ensure that the quality of battery management system product reaches a standard, the electric automobile industry standard QC/T897-2011 that in July, 2012, Ministry of Industry and Information worked out formally implements, and this standard pin proposes detailed test method and technical requirement to battery management system product.But battery management system testing apparatus also not corresponding with this standard at present, battery management system testing apparatus domestic at present, based on individual event testing tool, can not realize the full test to the dissimilar battery management system of different manufacturers.
Vehicle College, Tongji Univ. devises the BMS hardware-in―the-loop test system based on xPC, and this system uses MATLABsimulink to generate vehicle real time execution code, is performed by command by CAN to xPC target machine.XPC target machine carrys out electric parameter corresponding to simulated battery bag thermoelectricity information by control signal generator, and passes to BMS, BMS gather these information and with the standard volume comparison in xPC target machine, draw BMS measuring error.But this invention test macro does not have real simulation to go out the thermoelectricity information of electric battery, but provides with the form of electric parameter, cannot the quality of overall performance of test b MS product (comprising sensor) with this.
BJ University of Aeronautics & Astronautics has applied for " battery managing system testing platform " patent of invention in June, 2010, and the test platform described in this patent is made up of main control computer and multiple stage instrument, is coupled together by testing tool by CAN.This test platform assesses the combination property of BMS by the work in every state of simulated battery group.But, there is the great situation of traffic load when the multiplexing CAN of multiple instruments, and the synchronism output of instrument cannot be realized in the traffic rate of CAN limited (usual maximum communication rate is 1Mbps); Lack high-accuracy data acquisition module in test platform, cause the precision of platform self to ensure like this; Test platform does not have the analytic method of general BMS uploading data; Content measurement is few.Therefore this test platform practicality, precision, versatility, comprehensive in existing problems.
National Instruments's (NationalInstrumentsCorp. is called for short NI) has issued a kind of opening, modular instrument bus specification---PXI completely newly.PXI is the expansion (PCIeXtensionsforInstrumentation) of PCI at instrument field, the pci bus technical development that CompactPCI specification defines by it becomes to be suitable for test, measure and the machinery of data acquisition applications, electric and software specifications, thus defines new virtual instrument architecture.The object of working out PXI specification ideally combines to the ratio of performance to price advantage of Desktop PC and pci bus be expanded towards necessity of instrument field, forms a kind of virtual instrument test platform of main flow.
This novel modularized instrument system of PXI adds proven technique specification and requirement and is formed in pci bus Kernel Technology.It is used for the synchronous Trigger Bus of many plates and reference clock, for carrying out the star trigger bus of accurate timing and meeting the requirement of test and measurement user for the local bus of high speed communication between adjacent block by increasing.PXI specification adds environmental testing and active cooling requirement with the property easy of integration of the interoperability and system that ensure multi-vendor product in CompactPCI mechanical specification.PXI is by Microsoft
tMwindowsNT
tMand Microsoft
tMwindows95
tMbe defined as its standard software framework, and require that all instrument modules all must with the WIN32 device driver of writing by VISA specification, make PXI become a kind of system-level specification, what ensure system is easy to integrated with use, thus reduces the development cost of final user further.
Summary of the invention
The present invention seeks to the validity in order to solve existing battery management system testing apparatus and method, practicality, precision, versatility, comprehensive aspect existing problems, providing a kind of battery management system Testing Platform based on hardware-in-the-loop simulation and method of testing.
Battery management system Testing 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/low temperature testing results case;
Mesuring battary management system BMS realizes data interaction by CAN and Simulation Control and analogue unit;
The HV voltage signal output terminal of described high-tension electricity potential source connects the HV voltage signal input end 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 inputs 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 DC power control signal input output end 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;
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 are connected to the corresponding signal input part of mesuring battary management system BMS respectively with the signal output part of direct supply;
Described mesuring battary management system BMS is arranged in high/low temperature testing results case.
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 are all connected in 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 Testing Platform of hardware-in-the-loop simulation, described method of testing comprises: security test battery management system BMS to be measured being carried out to megger test and the test of dielectric voltage withstand performance;
The process of described megger test is: PXI controller arranges megger test condition: comprise test duration T, test voltage U, the control signal of insulation resistance low alarm limit value R and startup and reading insulating resistance value, and be sent to PXI communication unit by PXI bus, by PXI communication unit, this control signal is sent on Insulation Resistance Tester again, start Insulation Resistance Tester, Insulation Resistance Tester is made to export test voltage U to mesuring battary management system BMS, read the insulating resistance value that records of Insulation Resistance Tester and warning message to PXI communication unit simultaneously, PXI communication unit is uploaded to PXI controller by PXI bus, megger test is carried out to battery management system BMS to be measured,
If PXI controller receives warning message in test process, PXI controller then records warning message and insulating resistance value, judges that the insulation resistance of mesuring battary management system BMS is abnormal;
If PXI controller does not receive warning message in test process, then the time to be tested arrives T, PXI controller sends Insulation Resistance Tester stop signal, and the insulating resistance value recorded is back to PXI controller by PXI communication unit, and judge that the insulation resistance of mesuring battary management system BMS is normal, record the relevant information of the mesuring battary management system BMS of test, test condition and test result, this test completes;
The process of described dielectric voltage withstand performance test is: 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 PXI communication unit by PXI bus, by PXI communication unit, this control signal is sent on dielectric voltage withstand tester again, start dielectric voltage withstand tester, dielectric voltage withstand tester is made to export test voltage U to mesuring battary management system BMS, the warning message of the leakage current value and test that simultaneously read mesuring battary management system BMS is to PXI communication unit, and then be uploaded to PXI controller by PXI bus, the test of dielectric voltage withstand performance is carried out to battery management system BMS to be measured,
If PXI controller receives warning message in test process, 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 abnormal;
If PXI controller does not receive warning message in test process, then the time to be tested arrives test duration T, PXI controller sends dielectric voltage withstand tester stop signal, and the leakage current value recorded is back to PXI controller by PXI communication unit, and judge that the dielectric voltage withstand performance of mesuring battary management system BMS is normal, mesuring battary management system BMS information, test condition and test result that record is tested, this test completes.
The advantage of this test invention is:
Platform comprises the condition hardware etc. of artificial battery group hardware and BMS working environment, and the method for testing of platform, based on the hardware-in-the-loop simulation of electric battery, can ensure the validity that BMS tests and comprehensive;
The Simulation Control of platform and communication unit have employed the structure of PXI bus and many boards, because the traffic rate of PXI bus can reach 132*8Mbps, can ensure the synchronism of data acquisition and the synchronism of instrument output;
Platform is furnished with high-accuracy data acquisition module, comprises the collection of 24 passage monomer voltages, total voltage, charging and discharging currents, 12 road temperature values, ensure that the precision of platform self;
Method of testing comprises the analytic method of BMS uploading data, improves the versatility of test platform.
Accompanying drawing explanation
Fig. 1 is the structural representation of the battery management system Testing 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, based on the battery management system Testing Platform of hardware-in-the-loop simulation described in 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 simulator 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/low temperature testing results case 16;
Described mesuring battary management system BMS2 realizes data interaction by CAN 3 and Simulation Control and analogue unit 1;
The HV voltage signal output terminal of described high-tension electricity potential source 11 connects the HV voltage signal input end 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 carries 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 inputs of Simulation Control and analogue unit 1;
Described current detection module 5 is for converting the current signal of the current source received and electric current inverting module 12 to voltage signal and being sent to 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 DC power control signal input output end of direct supply 14;
Described Insulation Resistance Tester 8, dielectric voltage withstand tester 9,24 passage monomer voltage simulator 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 are connected to the corresponding signal input part of mesuring battary management system BMS2 respectively with the signal output part of direct supply 15;
Described mesuring battary management system BMS2 is arranged in high/low temperature testing results case 16, and described high/low temperature testing results case 16 is for the manufacture of various temperature environment.
Embodiment two: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further embodiment one, the battery management system Testing Platform based on hardware-in-the-loop simulation described in 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 is all connected in 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 ~ high/low temperature running test case 16 in adaptive testing platform.
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 battery management system Testing Platform based on hardware-in-the-loop simulation described in present embodiment, described method of testing comprises: security test battery management system BMS2 to be measured being carried out to megger test and the test of dielectric voltage withstand performance;
The process of described megger test is: PXI controller 1-1 arranges megger test condition: comprise test duration T, test voltage U, the control signal of insulation resistance low alarm limit value R and startup and reading insulating resistance value, and be sent to PXI communication unit 1-4 by PXI bus, by PXI communication unit 1-4, this control signal is sent on Insulation Resistance Tester 8 again, start Insulation Resistance Tester 8, Insulation Resistance Tester 8 is made to export test voltage U to mesuring battary management system BMS2, read the insulating resistance value that records of Insulation Resistance Tester 8 and warning message to PXI communication unit 1-4 simultaneously, PXI communication unit 1-4 is uploaded to PXI controller 1-1 by PXI bus, megger test is carried out to battery management system BMS2 to be measured,
If PXI controller 1-1 receives warning message in 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 abnormal;
If PXI controller 1-1 does not receive warning message in 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 recorded is back to PXI controller 1-1 by PXI communication card unit 1-4, and judge that the insulation resistance of mesuring battary management system BMS2 is normal, record the relevant information of the mesuring battary management system BMS2 of test, test condition and test result, this test completes;
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 PXI bus, by PXI communication unit 1-4, this control signal is sent on dielectric voltage withstand tester 9 again, start dielectric voltage withstand tester 9, dielectric voltage withstand tester 9 is made to export test voltage U to mesuring battary management system BMS2, the warning message of the leakage current value and test that simultaneously read mesuring battary management system BMS2 is to PXI communication unit 1-4, and then be uploaded to PXI controller 1-1 by PXI bus, the test of dielectric voltage withstand performance is carried out to battery management system BMS2 to be measured,
If PXI controller 1-1 receives warning message in 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 abnormal;
If PXI controller 1-1 does not receive warning message in 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 recorded is back to PXI controller 1-1 by PXI communication card unit 1-4, and judge that the dielectric voltage withstand performance of mesuring battary management system BMS2 is normal, mesuring battary management system BMS2 information, test condition and test result that record is tested, this test completes.
Embodiment four: present embodiment is described below in conjunction with Fig. 1, present embodiment further illustrates embodiment triple-cropping, the method of testing of the battery management system Testing Platform based on hardware-in-the-loop simulation described in present embodiment, this method of testing also comprises tests the state parameter measuring accuracy of battery management system BMS2 to be measured: this method of testing is:
First, by the PXI controller 1-1 in Simulation Control and analogue unit 1 according to the simulated conditions pre-set: the bound of the counting of battery state amount, quantity of state, total testing time T and the information of single test point test duration, or the mode reading battery charging and discharging model curve file generates the emulated data of the monomer voltage of electric battery, total voltage, electric current, temperature, insulation resistance, and it can be used as the battery model that state parameter measuring accuracy is tested;
Then steering order is sent on PXI communication unit 1-4 by PXI bus by PXI controller 1-1, 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 carry out artificial battery group are controlled again by the communication interface of PXI communication unit 1-4, and above-mentioned various status informations are supplied to mesuring battary management system BMS2, mesuring battary management system BMS2 measures these status informations, and is uploaded in real time by its measured value on PXI controller 1-1;
PXI controller 1-1 gathers 24 passage cell voltage value 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 be connected with PXI multichannel voltage collecting unit 1-3;
PXI controller 1-1 gathers the charging and discharging currents value of current source and inverting module 12 by the current detection module 5 be connected with PXI multichannel voltage collecting unit 1-3;
PXI controller 1-1 is by gathering the temperature value of multiple position in high-precision temperature environmental cabinet 13 with PXI temperature collecting cell 1-5;
Using 24 passage cell voltage value, total voltage value, charging and discharging currents value and temperature value as standard volume;
Then, the received measured value uploaded by mesuring battary management system BMS2 and standard volume are compared by PXI controller 1-1, ask for the error of mesuring battary management system BMS2 measured value in real time and record, after measurement completes, 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 asynchronous gross error value caused of the measured value uploaded with the mesuring battary management system BMS2 in rejection test data and standard volume, ask for the maximal value of the Error Absolute Value of residue measured value, minimum value and mean value, using these three values as the good and bad condition evaluating mesuring battary management system BMS2 state parameter measuring accuracy performance, the mean value of Error Absolute Value is larger, and think that the measuring error of mesuring battary management system BMS2 is larger, performance is poorer, maximal value and the minimum value deviation average of Error Absolute Value are far away, and think that the uncertainty of measurement of mesuring battary management system BMS2 is larger, performance is poorer.
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 the response speed of different temperatures sensor is each variant, therefore in the process that temperature measurement accuracy is tested, after PXI controller 1-1 has set the temperature value of a temperature test point, the actual temperature value of PXI controller 1-1 by comparison high-precision temperature environmental cabinet 13 and the setting value of incubator, if both are equal, think that temperature field in environmental cabinet 13 is with stable, now carry out the temperature measuring data of BMS and the record of standard volume and comparison, the temperature measurement accuracy of final analysis BMS to be measured.
Embodiment five: present embodiment is described below in conjunction with Fig. 1, present embodiment further illustrates embodiment triple-cropping, the method of testing of the battery management system Testing Platform based on hardware-in-the-loop simulation described in present embodiment, this method of testing also comprises SOC estimation precision test;
Described SOC estimation precision method of testing is: first test special operating mode according to real vehicle accumulator cell charging and discharging operating mode or SOC, battery charging and discharging machine is used to carry out discharge and recharge to battery cell/module sample, the magnitude of voltage of the battery cell in Simulation Control and analogue unit 1 real time record charge and discharge process, current value, battery temperature value and SOC value and synchronized relation each other, after charge and discharge process terminates, the relation of monomer voltage channel data by the multiple of required monomer voltage port number N is expanded, obtain the cell voltage value of N number of passage, wherein N is positive integer, in this, as artificial battery group model, obtain SOC standard value,
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, the cell voltage value of the N number of passage of high-precision temperature environmental cabinet 13 synchronism output, current value and temperature value are measured to mesuring battary management system BMS2, after having measured, the SOC estimated value that mesuring battary management system BMS2 obtains is uploaded on the PXI controller 1-1 of Simulation Control and analogue unit 1, this value and SOC standard value are compared by PXI controller 1-1, ask for the SOC estimation error of mesuring battary management system BMS2 in real time, when Real-time Error is greater than 10%, get two adjacent equal time intervals of Real-time Error, obtain three, front and back SOC error point E
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, when K value is less than 1, think that SOC estimation error is in continuous reduction, and K value is less, the tracking velocity of SOC estimation is faster, to be tested complete after with the size of K value and SOC estimation error two aspect thereof to evaluate the quality of mesuring battary management system BMS2SOC estimated performance, K value is little, and SOC estimation error is little, then the SOC estimated performance of the BMS tested is excellent.
Embodiment six: present embodiment is described below in conjunction with Fig. 1, present embodiment further illustrates embodiment triple-cropping, the method of testing of the battery management system Testing Platform based on hardware-in-the-loop simulation described in present embodiment, this method of testing also comprises fault diagnosis test;
The method of this fault diagnosis test is: first by the emulated data that monomer voltage is too high and too low, total voltage is too high and too low, electric current is excessive and too small, temperature is too high and too low and insulation resistance is weak generating electric battery in the PXI controller 1-1 in Simulation Control and analogue unit 1 according to the fault alarm condition of BMS, as battery failures model;
Then 24 passage monomer voltage simulators 10 are controlled by the communication interface of the PXI-CAN communication card unit 1-2 of Simulation Control and analogue unit 1, 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 artificial battery group overtension and too low, total voltage is too high and too low, electric current is excessive and too small, temperature is too high and too low, status information when insulation resistance is weak, and these status informations are supplied to mesuring battary management system BMS2, mesuring battary management system BMS2 measures these status informations and real-time for fault diagnosis result is uploaded to PXI controller 1-1 by PXI bus communication board unit 1-2, PXI controller 1-1 records fault alarm information that mesuring battary management system BMS2 uploads and records after artificial battery group exports fault value and uploads mistiming of warning message with BMS, this mistiming is called that corresponding failure diagnoses the response time of item.If the failure message uploaded is correct and the response time is short, think that BMS state parameter measuring accuracy performance is excellent.
Embodiment seven: present embodiment is described below in conjunction with Fig. 1, present embodiment further illustrates embodiment triple-cropping, based on the method for testing of the battery management system Testing Platform of hardware-in-the-loop simulation described in present embodiment, this method of testing also comprises environmental suitability test; Described environmental suitability method of testing is control high/low temperature testing results case 16 by the PXI controller 1-1 of Simulation Control and analogue unit 1 by the communication interface of PXI communication unit 1-4 to export the temperature value of setting and the BMS operating voltage of direct supply 15, PXI controller 1-1 emulates the working environment of mesuring battary management system BMS2 with this, after setting 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 illustrates embodiment triple-cropping, based on the method for testing of the battery management system Testing Platform of hardware-in-the-loop simulation described in present embodiment, this method of testing also comprises the parsing test of BMS uploading data, and this method of testing is:
The PXI controller 1-1 of Simulation Control and analogue unit 1 goes out magnitude of physical quantity corresponding to data that BMS uploads according to the ID of message content in BMS communication protocol, start bit, data bits, reduction coefficient A, side-play amount B information analysis; Be specially and from BMS uploading message, take out corresponding data X, then Y=A*X+B according to the ID of magnitude of physical quantity Y in BMS uploading message and start bit and data bits.
Specific embodiment:
Simulation Control in test platform hardware unit and analogue unit 1 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) artificial battery group hardware (10,11,12,13,14) connection, between environmental baseline hardware (15,16) communication interface.
Monomer voltage simulator (10) in artificial battery group hardware adopts the BAT-NEHP25J of Foochow nebula company, and this instrument adopts RS232 communication interface, is connected with the PXI-8432 communication card of PXI system.This instrument can the cell voltage value of simulation data electric battery 25 passages.
High-voltage power supply (11) in artificial battery group hardware adopts the BHK1000-40MG of Kepco company, and this instrument adopts GPIB communication interface, links connect with the PXIe-8115 controller board of PXI system.This instrument can the total voltage value of simulation data electric battery 0-1000V.
Current source (12) in artificial battery group hardware adopts the 6680A of Agilent company, and this instrument adopts GPIB communication interface, links connect with the PXIe-8115 controller board of PXI system.The H bridge commutating circuit that electric current reversing arrangement (12) adopts 4 solid-state relays to build.Both combine can the charging and discharging currents of artificial battery group 0 ~ ± 600A.
High-precision temperature environmental cabinet (13) in artificial battery group hardware adopts the MC811T of Espec company, and this instrument adopts RS422 communication interface, is connected with the PXI-8433 communication card of PXI system.This instrument can the temperature of artificial battery group-80 DEG C ~ 180 DEG C.
Insulation resistance simulator (14) in artificial battery group hardware adopts the LI24-1A85 dry-reed relay of Meder company as high-voltage switch gear element and multiple power resistor composition insulation resistance analog network, adopt RS485 communication interface, be connected with the PXI-8433 communication card of PXI system.This simulator can artificial battery group 5K ~ 4M power brick positive and negative busbar to vehicle body ground insulation resistance.
The BMS direct supply (15) of environmental baseline hardware adopts the XG60-14 of AMETEK company, and this instrument adopts 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 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, links connect with the PXIe-8115 controller board of PXI system.This instrument can provide the BMS operating ambient temperature of-50 DEG C ~ 150 DEG C.
CAN communication board in 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 pieces of PXIe-4300 boards of NI company, PXIe-4300 board is the full isolation voltage analog input card of 8 passage, range is 0 ~ ± 1V/ ± 2V/ ± 5V/ ± 10V is adjustable, the cell voltage value of 24 passages, high tension voltage value by 4 pieces of PXIe-4300 board synchronous acquisitions, can obtain high-precision artificial battery group voltage, current information through the magnitude of voltage of the voltage division processing of voltage detection module, the magnitude of voltage of current value after current detection circuit I-V changes after converting.
PXI temperature collecting cell (1-5) adopts PXIe-4357 temperature acquisition board and 12 tunnel high precision PT100 temperature sensor compositions.The realization of all method of testings has been coordinated by the software of BMS test platform and hardware.The semi-automation of test process can be realized.
Claims (8)
1. based on the battery management system Testing 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/low temperature testing results case (16),
Mesuring battary management system BMS (2) realizes data interaction by CAN (3) and Simulation Control and analogue unit (1);
The HV voltage signal output terminal of described high-tension electricity potential source (11) connects the HV voltage signal input end 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 inputs 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 DC power control signal input output end of direct supply (15);
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 testing results case (16);
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) are connected with the corresponding signal input part of mesuring battary management system BMS (2) respectively with the signal output part of direct supply (15);
Described mesuring battary management system BMS (2) is arranged in high/low temperature testing results case (16).
2. according to claim 1 based on the battery management system Testing Platform of hardware-in-the-loop simulation, 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) are all connected in 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 based on the battery management system Testing Platform of hardware-in-the-loop simulation described in 2, it is characterized in that, described method of testing comprises: security test battery management system BMS (2) to be measured being carried out to megger test and the test of dielectric voltage withstand performance;
The process of described megger test is: PXI controller (1-1) arranges megger test condition: comprise test duration T, test voltage U, the control signal of insulation resistance low alarm limit value R and startup and reading insulating resistance value, and be sent to PXI communication unit (1-4) by PXI bus, by PXI communication unit (1-4), this control signal is sent on Insulation Resistance Tester (8) again, start Insulation Resistance Tester (8), Insulation Resistance Tester (8) is made to export test voltage U to mesuring battary management system BMS (2), read insulating resistance value and warning message that Insulation Resistance Tester (8) records to PXI communication unit (1-4) simultaneously, PXI communication unit (1-4) is uploaded to PXI controller (1-1) by PXI bus, megger test is carried out to battery management system BMS (2) to be measured,
If PXI controller (1-1) receives warning message in 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 abnormal;
If PXI controller (1-1) does not receive warning message in 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 recorded is back to PXI controller (1-1) by PXI communication unit (1-4), and judge that the insulation resistance of mesuring battary management system BMS (2) is normal, record the information of the mesuring battary management system BMS (2) of test, test condition and test result, this test completes;
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), PXI communication unit (1-4) is sent to by PXI bus, by PXI communication unit (1-4), this control signal is sent on dielectric voltage withstand tester (9) again, start dielectric voltage withstand tester (9), dielectric voltage withstand tester (9) is made to export test voltage U to mesuring battary management system BMS (2), the warning message of the leakage current value and test that simultaneously read mesuring battary management system BMS (2) is to PXI communication unit (1-4), and then be uploaded to PXI controller (1-1) by PXI bus, the test of dielectric voltage withstand performance is carried out to battery management system BMS (2) to be measured,
If PXI controller (1-1) receives warning message in 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 abnormal;
If PXI controller (1-1) does not receive warning message in 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 recorded is back to PXI controller (1-1) by PXI communication unit (1-4), and judge that the dielectric voltage withstand performance of mesuring battary management system BMS (2) is normal, mesuring battary management system BMS (2) information, test condition and test result that record is tested, this test completes.
4. according to claim 3 based on the method for testing of the battery management system Testing Platform of hardware-in-the-loop simulation, it is characterized in that, this method of testing also comprises tests the state parameter measuring accuracy of battery management system BMS (2) to be measured: this method of testing is:
First, by the PXI controller (1-1) in Simulation Control and analogue unit (1) according to the simulated conditions that pre-sets: the bound of the counting of battery state amount, quantity of state, total testing time T and the information of single test point test duration, or the mode reading battery charging and discharging model curve file generates the emulated data of the monomer voltage of electric battery, total voltage, electric current, temperature, insulation resistance, and it can be used as the battery model that state parameter measuring accuracy is tested;
Then steering order is sent on PXI communication unit (1-4) by PXI bus by PXI controller (1-1), 24 passage monomer voltage simulators (10) are controlled again by the communication interface of PXI communication unit (1-4), 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) carry out the various status informations of artificial battery group, and above-mentioned various status informations are supplied to mesuring battary management system BMS (2), mesuring battary management system BMS (2) measures these status informations, and its measured value is uploaded in real time on PXI controller (1-1),
PXI controller (1-1) gathers the total voltage value of high-tension electricity potential source (11) by the voltage detection module (4) be connected with PXI multichannel voltage collecting unit (1-3), and gathers 24 passage cell voltage value of 24 passage monomer voltage simulators (10) by PXI multichannel voltage collecting unit (1-3);
PXI controller (1-1) gathers the charging and discharging currents value of current source and inverting module (12) by the current detection module (5) be connected with PXI multichannel voltage collecting unit (1-3);
PXI controller (1-1) gathers the temperature value of multiple position in high-precision temperature environmental cabinet (13) by PXI temperature collecting cell (1-5);
Using 24 passage cell voltage value, total voltage value, charging and discharging currents value and temperature value as standard volume;
Then, the received measured value uploaded by mesuring battary management system BMS (2) and standard volume are compared by PXI controller (1-1), ask for the error of mesuring battary management system BMS (2) measured value in real time and record, after measurement completes, the head and the tail data in single test point test interval deleted by the PXI controller (1-1) of Simulation Control and analogue unit (1), the asynchronous gross error value caused of the measured value uploaded with the mesuring battary management system BMS (2) in rejection test data and standard volume, ask for the maximal value of the Error Absolute Value of residue measured value, minimum value and mean value, using these three values as the good and bad condition evaluating mesuring battary management system BMS (2) state parameter measuring accuracy performance, the mean value of Error Absolute Value is larger, and think that the measuring error of mesuring battary management system BMS (2) is larger, performance is poorer, maximal value and the minimum value deviation average of Error Absolute Value are far away, and think that the uncertainty of measurement of mesuring battary management system BMS (2) is larger, performance is poorer.
5. according to claim 3 based on the method for testing of the battery management system Testing Platform of hardware-in-the-loop simulation, it is characterized in that, this method of testing also comprises SOC estimation precision test;
Described SOC estimation precision method of testing is: first test special operating mode according to real vehicle accumulator cell charging and discharging operating mode or SOC, battery charging and discharging machine is used to carry out discharge and recharge to battery cell/module sample, the magnitude of voltage of the battery cell in Simulation Control and analogue unit (1) real time record charge and discharge process, current value, battery temperature value and SOC value and synchronized relation each other, after charge and discharge process terminates, the relation of monomer voltage channel data by the multiple of required monomer voltage port number N is expanded, obtain the cell voltage value of N number of passage, wherein N is positive integer, in this, as artificial battery group model, obtain SOC standard value,
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), the cell voltage value of the N number of passage of high-precision temperature environmental cabinet (13) synchronism output, current value and temperature value are measured to mesuring battary management system BMS (2), after measurement completes, the SOC estimated value that mesuring battary management system BMS (2) obtains is uploaded on the PXI controller (1-1) of Simulation Control and analogue unit (1), this value and SOC standard value are compared by PXI controller (1-1), ask for the SOC estimation error of mesuring battary management system BMS (2) in real time, when Real-time Error is greater than 10%, get two adjacent equal time intervals of Real-time Error, obtain three, front and back SOC error point E
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, when K value is less than 1, think that SOC estimation error is in continuous reduction, and K value is less, the tracking velocity of SOC estimation is faster, to be tested complete after with the size of K value and SOC estimation error two aspect thereof to evaluate the quality of mesuring battary management system BMS (2) SOC estimated performance, K value is little, and SOC estimation error is little, then the SOC estimated performance of the BMS tested is excellent.
6. according to claim 3 based on the method for testing of the battery management system Testing Platform of hardware-in-the-loop simulation, it is characterized in that, this method of testing also comprises fault diagnosis test;
The method of this fault diagnosis test is: first by the emulated data that monomer voltage is too high and too low, total voltage is too high and too low, electric current is excessive and too small, temperature is too high and too low and insulation resistance is weak generating electric battery in the PXI controller (1-1) in Simulation Control and analogue unit (1) according to the fault alarm condition of BMS, as battery failures model;
Then 24 passage monomer voltage simulators (10) are controlled by the communication interface of the PXI-CAN communication card unit (1-2) of Simulation Control and analogue unit (1), 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) artificial battery group overtension and too low, total voltage is too high and too low, electric current is excessive and too small, temperature is too high and too low, status information when insulation resistance is weak, and these status informations are supplied to mesuring battary management system BMS (2), mesuring battary management system BMS (2) measures these status informations and real-time for fault diagnosis result is uploaded to PXI controller (1-1) by PXI-CAN communication card unit (1-2), PXI controller (1-1) records fault alarm information that mesuring battary management system BMS (2) uploads and records after artificial battery group exports fault value uploads mistiming of warning message with BMS, this mistiming is called that corresponding failure diagnoses the response time of item, if the failure message uploaded is correct and the response time is short, think that BMS state parameter measuring accuracy performance is excellent.
7. according to claim 3 based on the method for testing of the battery management system Testing Platform of hardware-in-the-loop simulation, it is characterized in that, this method of testing also comprises environmental suitability test, described environmental suitability method of testing is control by the communication interface of PXI communication unit (1-4) the BMS operating voltage that high/low temperature testing results case (16) exports temperature value and the direct supply (15) set by the PXI controller (1-1) of Simulation Control and analogue unit (1), PXI controller (1-1) emulates the working environment of mesuring battary management system BMS (2) with this, after setting mesuring battary management system BMS (2) working environment, the state parameter measuring accuracy of test mesuring battary management system BMS (2), SOC estimation function, fault diagnosis functions.
8. according to claim 3 based on the method for testing of the battery management system Testing Platform of hardware-in-the-loop simulation, it is characterized in that, this method of testing also comprises the parsing test of BMS uploading data, and this method of testing is:
The PXI controller (1-1) of Simulation Control and analogue unit (1) goes out magnitude of physical quantity corresponding to data that BMS uploads according to the ID of message content in BMS communication protocol, start bit, data bits, reduction coefficient A, side-play amount B information analysis; Be specially and from BMS uploading message, take out corresponding data X, then Y=A*X+B according to the ID of magnitude of physical quantity Y in BMS uploading message and start bit and data bits.
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| CN106597259A (en) * | 2016-12-28 | 2017-04-26 | 上海航天电源技术有限责任公司 | Energy storage cell system main control board test system |
| WO2019079836A1 (en) * | 2017-10-25 | 2019-05-02 | Kristl, Seibt & Co. Gesellschaft M.B.H. | Apparatus |
| DE102021126937A1 (en) | 2021-10-18 | 2023-04-20 | Virtual Vehicle Research Gmbh | Test device for a battery management system |
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