CN108548968A - The performance testing device and test method of battery management system - Google Patents
The performance testing device and test method of battery management system Download PDFInfo
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- CN108548968A CN108548968A CN201810184537.6A CN201810184537A CN108548968A CN 108548968 A CN108548968 A CN 108548968A CN 201810184537 A CN201810184537 A CN 201810184537A CN 108548968 A CN108548968 A CN 108548968A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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Abstract
The present invention provides a kind of performance testing devices of battery management system, include PC host computers, multichannel battery simulator, high voltage constant voltage source and monitoring platform；Data interaction, monitoring platform and battery management unit BMU data interactions are realized between monitoring platform and PC host computers；Multichannel battery simulator is communicated to connect by LAN and PC host computers, the monomer battery voltage signal output end of multichannel battery simulator is connect with the monomer battery voltage signal input part of battery detection unit CSC, and the current signal output end of multichannel battery simulator is connect with the current signal input of battery management unit BMU；High voltage constant voltage source is communicated to connect with PC host computers, and the battery total voltage signal output end of high voltage constant voltage source is connect with the total voltage signal input part of battery management unit BMU.The present invention also provides performance test methods.The performance that the present invention can be directed to the battery management system of different string numbers is tested in all directions, is reduced test accessory, is reduced testing cost.
Description
Technical field
The present invention relates to battery management system technical fields, and in particular to the performance testing device of battery management system and survey
Method for testing.
Background technology
Battery management system（Referred to as " BMS "）It is the critical component of new-energy automobile, it can be to the storage of new-energy automobile
The state of energy system-power battery is monitored in real time and is managed, and safety accident is prevented.In order to ensure battery management system
System is effectively run in new-energy automobile, it is necessary to be tested to it before battery management system manufacture, be promoted battery management
The stability and reliability of system operation.Currently, although national Ministry of Industry and Information has put into effect related check mark for battery management system
Standard, which proposes specific technology requirement and the method for inspection with regard to battery management system, still, due to domestic cell tube
Reason system product model is numerous, and product function is varied, and properties of product are irregular, therefore there is no formed and above-mentioned inspection
The corresponding unified detection device of battery management system of standard.
Currently, existing detection device of battery management system includes main control computer, main control computer passes through CAN communication and battery
Group, relay, total voltage acquisition Hall sensor, the various subtest equipment of total current acquisition current divider and load etc. connect
It connects, to which by the actual working environment for establishing battery management system, simulated battery manages the actual working state of system, reaches
Detect the purpose of the working performance of battery management system.Performance detection is carried out to battery management system by the above method, is existed
Following disadvantage：In terms of testing connection, for the battery management system of different string numbers, it has not been convenient to connect with various subtest equipment
It connects, while test program is complicated, testing time cost and test equipment cost are higher；In terms of measuring accuracy, it cannot be compatible with more
The test of kind battery voltage acquisition precision and a variety of charging and discharging currents acquisition precisions；Meanwhile it can not be in all directions to cell tube
The performance of reason system is tested.
Invention content
The present invention provides the performance testing device of battery management system and test methods, can be directed to the electricity of different string numbers
The performance of pond management system is tested in all directions, is reduced test accessory, is reduced testing cost；And test equipment
Connection is then more simple, can be directed to the battery management system of different string numbers, can easily change connection.
Technical scheme is as follows：
The present invention provides a kind of performance testing device of battery management system, battery management system includes cell tube to be measured
The reason unit B MU and battery detection unit CSC to be measured being connect by CAN communication with battery management unit BMU, performance test dress
Set includes PC host computers, multichannel battery simulator, high voltage constant voltage source and monitoring platform；
Between monitoring platform and PC host computers by RS485-LAN communication interface converters realize data interaction, monitoring platform with
Data interaction is realized by CAN communication or RS485 communications between battery management unit BMU；
Multichannel battery simulator is communicated to connect by LAN and PC host computers, the monomer battery voltage of multichannel battery simulator
Signal output end is connect with the monomer battery voltage signal input part of battery detection unit CSC, the electricity of multichannel battery simulator
Stream signal output end is connect with the current signal input of battery management unit BMU；Wherein, multichannel battery simulator exports
Voltage stabilization, readback precision are high and support program-controlled.
High voltage constant voltage source is communicated to connect by RS485-LAN communication interfaces converter and PC host computers, high voltage constant voltage source
Battery total voltage signal output end is connect with the total voltage signal input part of battery management unit BMU.
Function detection input/output module, insulation resistance simulator and temperature simulator are provided on monitoring platform, temperature
The temperature signal output end of degree simulator is connect with the temperature signal input of battery management unit BMU, insulation resistance simulator
Resistance signal output end connect with the battery total voltage signal input part of battery management unit BMU.
Function detection input/output module（Referred to as " I/O modules "）CC signals（I.e. AC charging connects confirmation signal）
Output end is connect with the CC signal input parts of battery management unit BMU, the CP signals of Function detection input/output module（Exchange
Charge control confirmation signal）Output end is connect with the CP signal input parts of battery management unit BMU, Function detection input and output mould
The master of block bears relay control signal test side and is connect with the negative relay control signal output end of the master of battery management unit BMU,
The charge relay control at charge relay control the signal detection end and battery management unit BMU of Function detection input/output module
Signal output end connection processed；
The CC2 signals of Function detection input/output module（I.e. DC charging connects confirmation signal）Output end and battery management unit
The CC2 signal input parts of BMU connect, DC charging relay control signal test side and the electricity of Function detection input/output module
The DC charging relay control signal output end of pond administrative unit BMU connects；
The ON signals of Function detection input/output module（That is vehicle ignition signal）The ON of output end and battery management unit BMU believes
The connection of number input terminal, the positive relay control signal test side of master and the battery management unit BMU of Function detection input/output module
Master's positive relay control signal output end connection, the pre-charge-relay of Function detection input/output module controls signal detection
End is connect with the pre-charge-relay control signal output of battery management unit BMU.
The present invention also provides a kind of performance test of battery management system, which includes battery management system
The detection method of monomer battery voltage acquisition precision, the detection method of battery total voltage acquisition precision, current acquisition precision
The detection method of detection method, the detection method of temperature acquisition precision and insulation resistance；
（1）The detection method of the monomer battery voltage acquisition precision of battery management system, including：
PC host computers receive the monomer battery voltage parameters simulation value V for testing battery pack input by user1With parameter error section
{ V, V ' }, and send monomer battery voltage output order to multichannel battery simulator；Multichannel battery simulator receives instruction
Afterwards, with monomer battery voltage parameters simulation value V1As voltage output value, to battery detection unit CSC output voltage signals；
Battery detection unit CSC collection voltages simultaneously obtain voltage value V2Afterwards, by voltage value V2Pass sequentially through battery management unit
BMU, monitoring platform are sent to PC host computers；
PC host computers are by monomer battery voltage parameters simulation value V1With the voltage value V received2It is compared, calculating difference Δ V
=︱ V1- V2︱ is determined as that detection is qualified, is otherwise judged to detecting unqualified if Δ V ＜ V ' and Δ V ＞ V；
（2）The detection method of the battery total voltage acquisition precision of battery management system, including：
PC host computers, which receive, tests battery total voltage parameters simulation value V input by user3With total voltage Acquisition Error value, and
Battery total voltage output order is sent to high voltage constant voltage source；After high voltage constant voltage source receives instruction, with battery total voltage parameters simulation
Value V3As total voltage output valve, to battery management unit BMU output voltage signals；
Battery management unit BMU is acquired and is obtained total voltage value V4Afterwards, by total voltage value V4It is sent on PC by monitoring platform
Position machine；
PC host computers are by battery total voltage parameters simulation value V3With total voltage value V4It is compared, calculates errorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified；
（3）The detection method of the temperature acquisition precision of battery management system, including：
PC host computers receive the temperature parameter simulation value T for testing battery pack input by user1With temperature parameter error burst T,
T ' }, according to temperature parameter simulation value T1Obtain out corresponding resistance value R1, and by resistance value R1It is defeated as temperature simulator
The resistance value gone out, it is R then to control temperature simulator and adjust self-resistance value1；
Battery detection unit CSC is acquired and is calculated the resistance value R for obtaining temperature simulator1', according to resistance value R1' obtain correspondence
Temperature value T2, by temperature value T2As temperature collection value and by battery management unit BMU, that monitoring platform is uploaded to PC is upper
Machine；
PC host computers are by temperature parameter simulation value T1With the temperature collection value T received2It is compared, calculating difference Δ T=︱
T1- T2︱ is determined as that detection is qualified, is otherwise judged to detecting unqualified if Δ T ＜ T ' and Δ T ＞ T；
（4）The detection method of the current acquisition precision of battery management system, including：
PC host computers receive the current acquisition Error Absolute Value for testing battery pack input by userWith current Hall sensor
Amplification factor n, and send monomer battery voltage output order to multichannel battery simulator total current analog channel；Multichannel electricity
After pond simulator receives instruction, to the total current collection terminal output voltage signal of battery management unit BMU, and by voltage output value
V5It is sent to PC host computers；PC host computers obtain voltage output value V5Afterwards, it is defeated by the simulation of multichannel battery simulator to calculate acquisition
The current value gone out, wherein V5For the voltage output value of multichannel battery simulator, R is fixed value resistance, and n is electricity
Flow the amplification factor of Hall sensor；
Battery management unit BMU is acquired and is obtained voltage value V6Afterwards, it calculates and obtains output current value I2And by output current value I2It passes
It send to PC host computers；
PC host computers are by the current value of multichannel battery simulator simulation outputWith the collected current value I of BMU2Compared
It is right, calculate errorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified；
（5）The detection method of the insulation resistance acquisition precision of battery management system, including：
PC host computers, which receive, tests insulation resistance Acquisition Error value input by userAfterwards, control insulation resistance simulator output
Resistance, resistance value are resistance value；
The resistance value of battery management unit BMU acquisition insulation resistance simulatorsAfterwards, by resistance valueIt is transmitted by monitoring platform
To PC host computers；
PC host computers are by the output resistance of insulation resistance simulatorWith the resistance value of acquisitionIt is compared, calculates errorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified；
Further, detection method further includes the AC charging function test method of battery management system, the survey of DC charging function
Method for testing and vehicle launch control flow test method；
（1）AC charging function test method includes：
PC PC controls monitoring platform is respectively by CC signal output ends and CP signal output ends, to battery management unit BMU
Export CC signals and CP signals, battery management unit BMU, which is received and opened, main bears relay and charge relay, PC host computers are looked into
Ask whether monitoring platform detects that the master of BMU outputs bears relay and charge relay open signal, if so, detection is qualified,
If it is not, then detecting unqualified；
（2）DC charging function test method includes：
PC PC controls monitoring platform exports CC2 signals, battery by CC2 signal output ports, to battery management unit BMU
Administrative unit BMU receives and opens main negative relay and DC charging relay, and whether PC host computers inquiry monitoring platform detects
The master exported to BMU bears relay and DC charging relay open signal, if so, detection is qualified, if it is not, then detection does not conform to
Lattice；
（3）Vehicle launch control flow test method includes：
PC PC controls monitoring platform exports ON signals, battery respectively by ON signal output ends to battery management unit BMU
Administrative unit BMU receives and opens pre-charge-relay and main positive relay, and whether PC host computers inquiry monitoring platform detects
The pre-charge-relay of BMU outputs and main positive relay open signal, if so, detection is qualified, if it is not, then detecting unqualified.
Further, test method further include the monomer battery voltage fault diagnosis of battery management system test method,
The test side that the test method of battery total voltage fault diagnosis, the test method of battery temperature fault diagnosis, over current fault diagnose
The test method of method and insulation resistance weakness fault diagnosis；
（1）The test method of monomer battery voltage fault diagnosis, including：
PC PC control multichannel battery simulators export monomer battery voltage, and voltage value is default more than battery management system
Single battery overvoltage alarm threshold or be less than the preset single battery undervoltage alarm threshold value of battery management system；Battery detecting list
Member detects and monomer battery voltage detected value is sent to battery management unit, and battery management unit is detected according to monomer voltage
Value, send monomer battery voltage fault alarm signal or non-alarm signal to PC host computers；If PC host computers receive monomer electricity
The fault alarm signal of cell voltage is then determined as that the monomer battery voltage fault diagnosis detection of battery management system is qualified, if PC
Host computer receives the non-alarm signal of monomer battery voltage, then is determined as the monomer battery voltage fault diagnosis inspection of battery management system
It surveys unqualified；
（2）The test method of battery total voltage fault diagnosis, including：
PC PC control high voltage constant voltage sources export total voltage, and total voltage value is more than the preset total voltage mistake of battery management system
It presses alarm threshold or is less than the preset battery total voltage undervoltage alarm threshold value of battery management system；Battery management unit is detected and is incited somebody to action
According to the battery total voltage detected value that detection obtains, the fault alarm signal of battery total voltage or non-announcement are sent by monitoring platform
Signal is warned to PC host computers；If PC host computers receive the fault alarm signal of battery total voltage, it is determined as battery management system
The detection of battery total voltage fault diagnosis it is qualified, if PC host computers receive the non-alarm signal of battery total voltage, be determined as battery
The battery total voltage fault diagnosis detection of management system is unqualified；
（3）The test method of battery temperature fault diagnosis, including：
PC PC control temperature simulator simulation output temperature, temperature value are more than the preset temperature height of battery management system and accuse
Alert threshold value is less than the low alarm threshold of the preset temperature of battery management system；Battery detection unit detects and sends out temperature detection value
It send to battery management unit, battery management unit sends temperature alarm signal or non-alarm signal to PC according to temperature detection value
Host computer；If what PC host computers received is temperature alarm signal, it is determined as the temperature fault diagnosis detection of battery management system
Qualification is determined as that the temperature fault diagnosis detection of battery management system does not conform to if PC host computers receive the non-alarm signal of temperature
Lattice；
（4）The test method of over current fault diagnosis, including：
PC PC control multichannel battery simulators utilize testing current channel therein output voltage, and output voltage values are, pass through the current value of multichannel battery simulator, wherein V6For the voltage output of multichannel battery simulator
Value, R are fixed value resistance, and n is the amplification factor of current Hall sensor, current valueMore than the preset mistake of battery management system
Flow alarm threshold；Battery management unit detects and according to current detection value, sends the fault alarm signal of overcurrent or non-announcement
Signal is warned to PC host computers；If PC host computers receive the fault alarm signal of overcurrent, it is determined as battery management system
Over current fault diagnosis detection is qualified, if PC host computers receive the non-alarm signal of electric current, is determined as the overcurrent of battery management system
Fault diagnosis detection is unqualified；
（5）The test method of insulation resistance weakness fault diagnosis, including：
PC PC control insulation resistance simulator simulation output resistance, resistance valueIt is preset less than battery management system
Insulation resistance weakness alarm threshold；After battery management unit carries out electrical resistance collection to insulation resistance simulator, according to the electricity of acquisition
Resistance value, send insulation resistance weakness alarm signal or non-alarm signal to PC host computers；If what PC host computers received is exhausted
The alarm signal of edge resistance weakness is then determined as that the insulation resistance weakness fault diagnosis detection of battery management system is qualified, if PC
Host computer receives the non-alarm signal of insulation resistance, then is determined as the insulation resistance weakness fault diagnosis detection of battery management system
It is unqualified.
The principle of the present invention and advantageous effect：
The present invention with PC host computers and battery management unit BMU by CAN communication or RS485 by communicating monitoring platform respectively
It realizes data interaction, and is communicated to connect by LAN and PC host computers by multichannel battery simulator, the simulation of multichannel battery
The monomer battery voltage signal output end of device is connect with the monomer battery voltage signal input part of battery detection unit CSC, electric current
Simulation output end is connect with the current signal input of battery management unit BMU, and passes through RS485- by high voltage constant voltage source
LAN communication interface convertor is communicated to connect with PC host computers, the battery total voltage signal output end and cell tube of high voltage constant voltage source
The total voltage signal input part connection of unit B MU is managed, and the temperature detection signal output end and battery for passing through temperature simulator
The temperature detection signal input terminal of administrative unit BMU connects, the insulation resistance detection signal output end of insulation resistance simulator with
The battery total voltage signal detection input terminal of battery management unit BMU connects, and can not only realize the list to battery management system
Body battery voltage acquisition precision, battery total voltage acquisition precision, current acquisition precision, temperature acquisition precision and insulation resistance acquisition
Precision is tested, but also can be realized to the single battery over-voltage fault of battery management system diagnoses, single battery is under-voltage
Fault diagnosis, the diagnosis of battery total voltage under-voltage fault, the diagnosis of excess temperature fault diagnosis, over current fault, insulation resistance weakness failure are examined
It is disconnected to be tested, simultaneously, it is no longer necessary to which relay, battery pack and charging/discharging apparatus reduce test accessory, reduce survey
Try cost；And test equipment connection is then more simple, can be directed to the battery management system of different string numbers, can easily change
Become connection.
In the present invention, battery simulator includes multichannel battery simulator, high voltage constant voltage source, temperature simulator, insulated electro
Simulator is hindered, battery status parameter includes monomer battery voltage, battery total voltage, electric current, temperature and insulation resistance；The present invention is logical
It crosses and communicates to connect battery simulator with PC host computers, battery management system respectively, the battery simulators mould such as PC PC controls
Quasi- output battery status parameter value, establishes battery simulation model.
During battery status parameter accuracy test, battery status parameter detected value is uploaded on PC by battery management system
Position machine, PC host computers calculate the battery status parameter Acquisition Error of battery management system, and are acquired according to battery status parameter
Required precision（That is precision acquisition error amount）, judge whether the battery status parameter acquisition precision of battery management system is qualified；By
In ranging from 0 ~ 6V of multichannel battery simulator adjustable output voltage and ranging from 0 ~ 1A of adjustable output current, and
And the output of PC PC controls is can be transferred through, therefore performance testing device of the present invention can be in compatible battery management system
The test of multiple battery voltage acquisition precision and the test of a variety of charging and discharging currents acquisition precisions.
In fault diagnosis test process, the battery status parameter output valve of battery simulator, the battery is arranged in PC host computers
State parameter output valve is in battery status parameter alarm section, and PC host computers come from battery management system according to whether receiving
The alarm signal of system, to judge that the fault diagnosis of battery management system tests whether qualification；Due to multichannel battery simulator
Voltage output is stable, readback precision is high and can be by PC PC controls, therefore host computer can input battery status parameter
To complete monomer voltage acquisition precision, current acquisition precision, temperature detection and insulation resistance detection, overvoltage, overcurrent insulation resistance
The fault detects such as weakness and switching signal detection, test whole-course automation, drastically reduce the time of test process.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the performance testing device of battery management system described in the embodiment of the present invention；
Fig. 2 is the flow of the detection method of the monomer battery voltage acquisition precision of battery management system described in the embodiment of the present invention
Figure；
Fig. 3 is the flow chart of the detection method of the battery total voltage acquisition precision of battery management system described in the embodiment of the present invention；
Fig. 4 is the flow chart of the detection method of the temperature acquisition precision of battery management system described in the embodiment of the present invention；
Fig. 5 is the flow chart of the detection method of the current acquisition precision of battery management system described in the embodiment of the present invention；
Fig. 6 is the flow chart of the detection method of the insulation resistance acquisition precision of battery management system described in the embodiment of the present invention；
Fig. 7 is the flow chart of the AC charging function test method of battery management system described in the embodiment of the present invention；
Fig. 8 is the flow chart of DC charging function test method described in the embodiment of the present invention；
Fig. 9 is the flow chart of vehicle launch control flow test method described in the embodiment of the present invention；
Figure 10 is the flow of the test method of the monomer battery voltage fault diagnosis of battery management system described in the embodiment of the present invention
Figure；
Figure 11 is the flow chart of the test method of the battery total voltage fault diagnosis of battery management system described in the embodiment of the present invention；
Figure 12 is the flow chart of the test method of the battery temperature fault diagnosis of battery management system described in the embodiment of the present invention；
Figure 13 is the flow chart of the test method of the over current fault diagnosis of battery management system described in the embodiment of the present invention；
Figure 14 is the test method of the insulation resistance weakness fault diagnosis of battery management system described in the embodiment of the present invention.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Referring to Fig.1, as shown in Fig. 1, a kind of performance testing device of battery management system, wherein battery management system
Include battery management unit BMU and battery detection unit CSC to be measured, battery management unit BMU passes through CAN communication and battery
Detection unit CSC connections；And performance testing device include then PC host computers, multichannel battery simulator, high voltage constant voltage source with
And monitoring platform.
Data interaction, observing and controlling are realized by RS485-LAN communication interface converters between the monitoring platform and PC host computers
It is communicated by CAN communication or RS485 between platform and battery management unit BMU and realizes data interaction；Multichannel battery simulator
It is communicated to connect by LAN and PC host computers, the single battery of monomer battery voltage signal output end and battery detection unit CSC
Voltage signal inputs connect, and current signal output end is connect with the current signal input of battery management unit BMU；High pressure
Constant pressure source is communicated to connect by RS485-LAN communication interfaces converter and PC host computers, battery total voltage signal output end with
The total voltage signal input part of battery management unit BMU connects.
Function detection input/output module, insulation resistance simulator and temperature simulator are provided on monitoring platform, temperature
The temperature signal output end of degree simulator is connect with the temperature signal input of battery management unit BMU, insulation resistance simulator
Resistance signal output end connect with the battery total voltage signal input part of battery management unit BMU.
In Function detection input/output module, CC signal output ends and the CC signals of battery management unit BMU input
End connection, CP signal output ends are connect with the CP signal input parts of battery management unit BMU, are led and are born relay control signal
Test side is born relay control signal output end with the master of battery management unit BMU and is connect, and charge relay controls signal inspection
End is surveyed to connect with the charge relay control signal output of battery management unit BMU；Its CC2 signal output end and battery management
The CC2 signal input parts of unit B MU connect, and DC charging relay control signal test side is with battery management unit BMU's
DC charging relay control signal output end connects；The ON signals of its ON signal output end and battery management unit BMU input
End connection, leads the positive relay control signal output end of master of positive relay control signal test side and battery management unit BMU
Connection, pre-charge-relay control pre-charge-relay control signal output of the signal detection end with battery management unit BMU
End connection.
The embodiment of the present invention between PC host computers, battery management unit BMU by realizing data respectively by monitoring platform
Interaction, by multichannel battery simulator respectively with PC host computers, battery management unit BMU, battery detection unit CSC communication links
It connects, high voltage constant voltage source is communicated to connect with PC host computers, battery management unit BMU respectively, to substitute and reduce using battery
The ancillary equipments such as group, relay, total voltage acquisition Hall sensor and total current acquisition current divider, solve for different string numbers
Battery management system connection is inconvenient and existing test process is complicated, testing time cost and test equipment cost are higher
The problem of.
An embodiment of the present invention provides a kind of test method of the performance testing device of battery management system, the test methods
Include the detection method of the monomer battery voltage acquisition precision of battery management system, battery total voltage acquisition precision detection side
Method, the detection method of current acquisition precision, the detection method of temperature acquisition precision, the detection method of insulation resistance, battery management
AC charging function test method, DC charging function test method, vehicle launch control flow test method, the battery of system
The test method of monomer battery voltage fault diagnosis, the test method of battery total voltage fault diagnosis, the battery temperature of management system
Spend the test method of fault diagnosis, the test method of the test method and insulation resistance weakness fault diagnosis of over current fault diagnosis.
As shown in Fig. 2, the detection method of the monomer battery voltage acquisition precision of battery management system, including：
S101：PC host computers receive the monomer battery voltage parameters simulation value V for testing battery pack input by user1And parameter error
Section { V, V ' }, and send monomer battery voltage output order to multichannel battery simulator；
S102：After multichannel battery simulator receives instruction, with monomer battery voltage parameters simulation value V1As voltage output value,
To battery detection unit CSC output voltage signals；
S103：Battery detection unit CSC collection voltages simultaneously obtain voltage value V2Afterwards, by voltage value V2Pass sequentially through battery management list
First BMU, monitoring platform are sent to PC host computers；
S104：PC host computers are by monomer battery voltage parameters simulation value V1With the voltage value V received2It is compared, it is poor to calculate
It is worth Δ V=︱ V1- V2︱ is determined as that detection is qualified, is otherwise judged to detecting unqualified if Δ V ＜ V ' and Δ V ＞ V.
As shown in Fig. 3, the detection method of the battery total voltage acquisition precision of battery management system, including：
S201：PC host computers, which receive, tests battery total voltage parameters simulation value V input by user3With total voltage Acquisition Error value, and send battery total voltage output order to high voltage constant voltage source；
S202：After high voltage constant voltage source receives instruction, with battery total voltage parameters simulation value V3As total voltage output valve, to battery
Administrative unit BMU output voltage signals；
S203：Battery management unit BMU is acquired and is obtained total voltage value V4Afterwards, by total voltage value V4It is sent to by monitoring platform
PC host computers；
S204：PC host computers are by battery total voltage parameters simulation value V3With total voltage value V4It is compared, calculates errorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified；
As shown in Fig. 4, the detection method of the temperature acquisition precision of battery management system, including：
S301：PC host computers receive the temperature parameter simulation value T for testing battery pack input by user1With temperature parameter error burst
{ T, T ' }, according to temperature parameter simulation value T1Obtain out corresponding resistance value R1, by resistance value R1It is defeated as temperature simulator
The resistance value gone out, it is R then to control temperature simulator and adjust self-resistance value1；
S302：Battery detection unit CSC is acquired and is calculated the resistance value R for obtaining temperature simulator1', according to resistance value R1' obtain
Corresponding temperature value T2, by temperature value T2It is uploaded to PC as temperature collection value and by battery management unit BMU, monitoring platform
Host computer；
S303：PC host computers are by temperature parameter simulation value T1With the temperature collection value T received2It is compared, calculating difference Δ T
=︱ T1- T2︱ is determined as that detection is qualified, is otherwise judged to detecting unqualified if Δ T ＜ T ' and Δ T ＞ T.
As shown in Fig. 5, the detection method of the current acquisition precision of battery management system, including：
S401：PC host computers receive the current acquisition Error Absolute Value for testing battery pack input by userIt is passed with current Hall
The amplification factor n of sensor, and send monomer battery voltage output order to multichannel battery simulator total current analog channel；
S402：After multichannel battery simulator receives instruction, believe to the total current collection terminal output voltage of battery management unit BMU
Number, and by voltage output value V5It is sent to PC host computers；
S403：PC host computers obtain voltage output value V5Afterwards, the electricity obtained through multichannel battery simulator simulation output is calculated
Flow valuve, wherein V5For the voltage output value of multichannel battery simulator, R is fixed value resistance, and n is current Hall
The amplification factor of sensor；
S404：Battery management unit BMU is acquired and is obtained voltage value V6Afterwards, it calculates and obtains output current value I2And by output current
Value I2It is sent to PC host computers；
S405：PC host computers are by the current value of multichannel battery simulator simulation outputWith the collected current value I of BMU2Into
Row compares, and calculates errorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified.
As shown in Fig. 6, the detection method of the insulation resistance acquisition precision of battery management system, including：
S501：PC host computers, which receive, tests insulation resistance Acquisition Error value input by userAfterwards, control insulation resistance simulation
Device output resistance, resistance value are resistance value；
S502：The resistance value of battery management unit BMU acquisition insulation resistance simulatorsAfterwards, by resistance valueIt is flat by observing and controlling
Platform is sent to PC host computers；
S503：PC host computers are by the output resistance of insulation resistance simulatorWith the resistance value of acquisitionIt is compared, calculates
ErrorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified.
As shown in Fig. 7, the AC charging function test method of battery management system, including：
S601：PC PC controls monitoring platform is respectively by CC signal output ends and CP signal output ends, to battery management list
First BMU output CC signals and CP signals；
S602：Battery management unit BMU is received and is opened main negative relay and charge relay；
S603：Whether PC host computers inquiry monitoring platform detects that the master of BMU outputs bears relay and charge relay opens letter
Number, if so, detection is qualified, if it is not, then detecting unqualified；
As shown in Fig. 8, DC charging function test method includes：
S701：PC PC controls monitoring platform is by CC2 signal output ports, to battery management unit BMU output CC2 letters
Number；
S702：Battery management unit BMU is received and is opened main negative relay and DC charging relay；
S703：Whether PC host computers inquiry monitoring platform detects that the master of BMU outputs bears relay and DC charging relay is opened
Signal is opened, if so, detection is qualified, if it is not, then detecting unqualified；
As shown in Fig. 9, vehicle launch control flow test method includes：
S801：PC PC controls monitoring platform is respectively by ON signal output ends, to battery management unit BMU output ON letters
Number；
S802：Battery management unit BMU receives and opens pre-charge-relay and main positive relay；
S803：Whether PC host computers inquiry monitoring platform detects that the pre-charge-relay of BMU outputs and main positive relay are opened
Signal, if so, detection is qualified, if it is not, then detecting unqualified.
As shown in Fig. 10, the test method of the monomer battery voltage fault diagnosis of battery management system, including：
S901：PC PC control multichannel battery simulators export monomer battery voltage, and voltage value is more than battery management system
Preset single battery overvoltage alarm threshold of uniting is less than the preset single battery undervoltage alarm threshold value of battery management system；
S902：Battery detection unit CSC is detected and monomer battery voltage detected value is sent to battery management unit BMU；
S903：Battery management unit BMU sends the fault alarm signal or non-of monomer battery voltage according to monomer voltage detected value
Alarm signal is to PC host computers；
S904：If PC host computers receive the fault alarm signal of monomer battery voltage, it is determined as the monomer of battery management system
The detection of cell voltage fault diagnosis is qualified, if PC host computers receive the non-alarm signal of monomer battery voltage, is determined as cell tube
The monomer battery voltage fault diagnosis detection of reason system is unqualified.
As shown in Fig. 11, the test method of the battery total voltage fault diagnosis of battery management system, including：
S1001：PC PC control high voltage constant voltage sources export total voltage, and it is preset total that total voltage value is more than battery management system
Electric voltage over press alarm threshold is less than the preset battery total voltage undervoltage alarm threshold value of battery management system；
S1002：The battery total voltage detected value that battery management unit is detected and will be obtained according to detection, is sent by monitoring platform
The fault alarm signal of battery total voltage or non-alarm signal are to PC host computers；
S1003：If PC host computers receive the fault alarm signal of battery total voltage, it is determined as that the battery of battery management system is total
Voltage failure diagnosis detection is qualified, if PC host computers receive the non-alarm signal of battery total voltage, is determined as battery management system
Battery total voltage fault diagnosis detection it is unqualified.
As shown in Fig. 12, the test method of the battery temperature fault diagnosis of battery management system, including：
S1101：PC PC control temperature simulator simulation output temperature, temperature value are more than the preset temperature of battery management system
It spends high alarm threshold or is less than the low alarm threshold of the preset temperature of battery management system；
S1102：Battery detection unit detects and temperature detection value is sent to battery management unit；
S1103：Battery management unit sends temperature alarm signal or non-alarm signal to PC host computers according to temperature detection value；
S1104：If what PC host computers received is temperature alarm signal, it is determined as the temperature fault diagnosis inspection of battery management system
It is qualified to survey, if PC host computers receive the non-alarm signal of temperature, is determined as the temperature fault diagnosis detection of battery management system not
It is qualified.
As shown in Fig. 13, the test method of the over current fault diagnosis of battery management system, including：
S1201：PC PC control multichannel battery simulators utilize testing current channel therein output voltage, output electricity
Pressure value is, pass through the current value of multichannel battery simulator simulation output, wherein V6For multichannel battery mould
The voltage output value of quasi- device, R are fixed value resistance, and n is the amplification factor of current Hall sensor, current valueMore than cell tube
Manage the overcurrent alarm threshold of systemic presupposition；
S1202：Battery management unit detects and according to current detection value, sends the fault alarm signal of overcurrent or non-alarm
Signal is to PC host computers；
S1203：If PC host computers receive the fault alarm signal of overcurrent, it is determined as the over current fault of battery management system
Diagnosis detection is qualified, if PC host computers receive the non-alarm signal of electric current, is determined as the over current fault diagnosis of battery management system
It detects unqualified.
As shown in Fig. 14, the test method of the insulation resistance weakness fault diagnosis of battery management system, including：
S1301：PC PC control insulation resistance simulator simulation output resistance, resistance valueLess than battery management system
Preset insulation resistance weakness alarm threshold；
S1302：After battery management unit carries out electrical resistance collection to insulation resistance simulator, according to the resistance value of acquisition, send
The alarm signal or non-alarm signal of insulation resistance weakness are to PC host computers；
S1303：If what PC host computers received is the alarm signal of insulation resistance weakness, it is determined as the insulation of battery management system
The detection of resistance weakness fault diagnosis is qualified, if PC host computers receive the non-alarm signal of insulation resistance, is determined as battery management
The insulation resistance weakness fault diagnosis detection of system is unqualified.
The embodiment of the present invention can acquire essence to the monomer battery voltage acquisition precision of battery management system, battery total voltage
Degree, the control of current acquisition precision, temperature acquisition precision, insulation resistance, AC charging function, DC charging function, vehicle launch
Flow, monomer battery voltage fault diagnosis, battery total voltage fault diagnosis, battery temperature fault diagnosis, over current fault diagnosis and
Insulation resistance weakness fault diagnosis carries out comprehensive performance test, when testing whole-course automation and significantly reducing test
Between, it solves the problems, such as that the test of multiple battery voltage acquisition precision and a variety of charging and discharging currents acquisition precisions cannot be compatible with.
Claims (6)
1. the performance testing device of battery management system, the battery management system includes battery management unit BMU to be measured
With the battery detection unit CSC to be measured being connect by CAN communication with battery management unit BMU, it is characterised in that：
The performance testing device includes PC host computers, multichannel battery simulator, high voltage constant voltage source and monitoring platform；
Data interaction, the survey are realized by RS485-LAN communication interface converters between the monitoring platform and PC host computers
It is communicated by CAN communication or RS485 between control platform and battery management unit BMU and realizes data interaction；
The multichannel battery simulator is communicated to connect by LAN and PC host computers, the monomer of the multichannel battery simulator
Battery voltage signal output end is connect with the monomer battery voltage signal input part of battery detection unit CSC, the multichannel electricity
The current signal output end of pond simulator is connect with the current signal input of battery management unit BMU；
The high voltage constant voltage source is communicated to connect by RS485-LAN communication interfaces converter and PC host computers, the high pressure constant pressure
The battery total voltage signal output end in source is connect with the total voltage signal input part of battery management unit BMU.
2. the performance testing device of battery management system as described in claim 1, it is characterised in that：It is set on the monitoring platform
It is equipped with Function detection input/output module, insulation resistance simulator and temperature simulator, the temperature letter of the temperature simulator
Number output end is connect with the temperature signal input of battery management unit BMU, the resistance signal output end of insulation resistance simulator
It is connect with the battery total voltage signal input part of battery management unit BMU.
3. the performance testing device of battery management system as claimed in claim 2, it is characterised in that：
The CC signal output ends of the Function detection input/output module connect with the CC signal input parts of battery management unit BMU
It connecing, the CP signal output ends of the Function detection input/output module are connect with the CP signal input parts of battery management unit BMU,
The master of the Function detection input/output module bears relay control signal test side and the master of battery management unit BMU bears relay
Device control signal output connects, the charge relay control signal detection end of the Function detection input/output module and battery
The charge relay control signal output of administrative unit BMU connects；
The CC2 signal output ends of the Function detection input/output module connect with the CC2 signal input parts of battery management unit BMU
It connects, the DC charging relay control signal test side of the Function detection input/output module is with battery management unit BMU's
DC charging relay control signal output end connects；
The ON signal output ends of the Function detection input/output module connect with the ON signal input parts of battery management unit BMU
It connects, the positive relay control signal test side of master of the Function detection input/output module and the master of battery management unit BMU are just
Relay control signal output end connects, the pre-charge-relay control signal detection end of the Function detection input/output module
It is connect with the pre-charge-relay control signal output of battery management unit BMU.
4. application claim 1 is to the test method of the performance testing device of the battery management system described in claim 3, special
Sign is：
The test method includes detection method, the battery total voltage of the monomer battery voltage acquisition precision of battery management system
The detection method and insulation resistance of the detection method of acquisition precision, the detection method of current acquisition precision, temperature acquisition precision
Detection method；
（1）The detection method of the monomer battery voltage acquisition precision of battery management system, including：
PC host computers receive the monomer battery voltage parameters simulation value V for testing battery pack input by user1With parameter error section
{ V, V ' }, and send monomer battery voltage output order to multichannel battery simulator；Multichannel battery simulator receives instruction
Afterwards, with monomer battery voltage parameters simulation value V1As voltage output value, to battery detection unit CSC output voltage signals；
Battery detection unit CSC collection voltages simultaneously obtain voltage value V2Afterwards, by voltage value V2Pass sequentially through battery management unit BMU,
Monitoring platform is sent to PC host computers；
PC host computers are by monomer battery voltage parameters simulation value V1With the voltage value V received2It is compared, calculating difference Δ V=
︱ V1- V2︱ is determined as that detection is qualified, is otherwise judged to detecting unqualified if Δ V ＜ V ' and Δ V ＞ V；
（2）The detection method of the battery total voltage acquisition precision of battery management system, including：
PC host computers, which receive, tests battery total voltage parameters simulation value V input by user3With total voltage Acquisition Error value, and to
High voltage constant voltage source sends battery total voltage output order；After high voltage constant voltage source receives instruction, with battery total voltage parameters simulation value
V3As total voltage output valve, to battery management unit BMU output voltage signals；
Battery management unit BMU is acquired and is obtained total voltage value V4Afterwards, by total voltage value V4It is upper it to be sent to PC by monitoring platform
Machine；
PC host computers are by battery total voltage parameters simulation value V3With total voltage value V4It is compared, calculates error,
If, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified；
（3）The detection method of the temperature acquisition precision of battery management system, including：
PC host computers receive the temperature parameter simulation value T for testing battery pack input by user1With temperature parameter error burst T,
T ' }, according to temperature parameter simulation value T1Obtain out corresponding resistance value R1, and by resistance value R1It is defeated as temperature simulator
The resistance value gone out, it is R then to control temperature simulator and adjust self-resistance value1；
Battery detection unit CSC is acquired and is calculated the resistance value R for obtaining temperature simulator1', according to resistance value R1' acquisition is corresponding
Temperature value T2, by temperature value T2It is uploaded to PC host computers as temperature collection value and by battery management unit BMU, monitoring platform；
PC host computers are by temperature parameter simulation value T1With the temperature collection value T received2It is compared, calculating difference Δ T=︱
T1- T2︱ is determined as that detection is qualified, is otherwise judged to detecting unqualified if Δ T ＜ T ' and Δ T ＞ T；
（4）The detection method of the current acquisition precision of battery management system, including：
PC host computers receive the current acquisition Error Absolute Value for testing battery pack input by userWith current Hall sensor
Amplification factor n, and send monomer battery voltage output order to multichannel battery simulator total current analog channel；Multichannel electricity
After pond simulator receives instruction, to the total current collection terminal output voltage signal of battery management unit BMU, and by voltage output value
V5It is sent to PC host computers；PC host computers obtain voltage output value V5Afterwards, it is defeated by the simulation of multichannel battery simulator to calculate acquisition
The current value gone out, wherein V5For the voltage output value of multichannel battery simulator, R is fixed value resistance, and n is electricity
Flow the amplification factor of Hall sensor；
Battery management unit BMU is acquired and is obtained voltage value V6Afterwards, it calculates and obtains output current value I2And by output current value I2It passes
It send to PC host computers；
PC host computers are by the current value of multichannel battery simulator simulation outputWith the collected current value I of BMU2It is compared,
Calculate errorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified；
（5）The detection method of the insulation resistance acquisition precision of battery management system, including：
PC host computers, which receive, tests insulation resistance Acquisition Error value input by userAfterwards, control insulation resistance simulator output
Resistance, resistance value are resistance value；
The resistance value of battery management unit BMU acquisition insulation resistance simulatorsAfterwards, by resistance valueIt is transmitted by monitoring platform
To PC host computers；
PC host computers are by the output resistance of insulation resistance simulatorWith the resistance value of acquisitionIt is compared, calculates errorIf, then it is determined as that detection is qualified, is otherwise judged to detecting unqualified.
5. the test method of the performance testing device of battery management system as claimed in claim 4, it is characterised in that：The inspection
Survey method further includes the AC charging function test method, DC charging function test method and vehicle launch of battery management system
Control flow test method；
（1）AC charging function test method includes：
PC PC controls monitoring platform is respectively by CC signal output ends and CP signal output ends, to battery management unit BMU
Export CC signals and CP signals, battery management unit BMU, which is received and opened, main bears relay and charge relay, PC host computers are looked into
Ask whether monitoring platform detects that the master of BMU outputs bears relay and charge relay open signal, if so, detection is qualified,
If it is not, then detecting unqualified；
（2）DC charging function test method includes：
PC PC controls monitoring platform exports CC2 signals, battery by CC2 signal output ports, to battery management unit BMU
Administrative unit BMU receives and opens main negative relay and DC charging relay, and whether PC host computers inquiry monitoring platform detects
The master exported to BMU bears relay and DC charging relay open signal, if so, detection is qualified, if it is not, then detection does not conform to
Lattice；
（3）Vehicle launch control flow test method includes：
PC PC controls monitoring platform exports ON signals, battery respectively by ON signal output ends to battery management unit BMU
Administrative unit BMU receives and opens pre-charge-relay and main positive relay, and whether PC host computers inquiry monitoring platform detects
The pre-charge-relay of BMU outputs and main positive relay open signal, if so, detection is qualified, if it is not, then detecting unqualified.
6. the test method of the performance testing device of battery management system as claimed in claim 4, it is characterised in that：The survey
Method for testing further includes the test method of the monomer battery voltage fault diagnosis of battery management system, battery total voltage fault diagnosis
Test method, the test method of battery temperature fault diagnosis, the test method and insulation resistance weakness failure of over current fault diagnosis
The test method of diagnosis；
（1）The test method of monomer battery voltage fault diagnosis, including：
PC PC control multichannel battery simulators export monomer battery voltage, and voltage value is default more than battery management system
Single battery overvoltage alarm threshold or be less than the preset single battery undervoltage alarm threshold value of battery management system；Battery detecting list
Member detects and monomer battery voltage detected value is sent to battery management unit, and battery management unit is detected according to monomer voltage
Value, send monomer battery voltage fault alarm signal or non-alarm signal to PC host computers；If PC host computers receive monomer electricity
The fault alarm signal of cell voltage is then determined as that the monomer battery voltage fault diagnosis detection of battery management system is qualified, if PC
Host computer receives the non-alarm signal of monomer battery voltage, then is determined as the monomer battery voltage fault diagnosis inspection of battery management system
It surveys unqualified；
（2）The test method of battery total voltage fault diagnosis, including：
PC PC control high voltage constant voltage sources export total voltage, and total voltage value is more than the preset total voltage mistake of battery management system
It presses alarm threshold or is less than the preset battery total voltage undervoltage alarm threshold value of battery management system；Battery management unit is detected and is incited somebody to action
According to the battery total voltage detected value that detection obtains, the fault alarm signal of battery total voltage or non-announcement are sent by monitoring platform
Signal is warned to PC host computers；If PC host computers receive the fault alarm signal of battery total voltage, it is determined as battery management system
The detection of battery total voltage fault diagnosis it is qualified, if PC host computers receive the non-alarm signal of battery total voltage, be determined as battery
The battery total voltage fault diagnosis detection of management system is unqualified；
（3）The test method of battery temperature fault diagnosis, including：
PC PC control temperature simulator simulation output temperature, temperature value are more than the preset temperature height of battery management system and accuse
Alert threshold value is less than the low alarm threshold of the preset temperature of battery management system；Battery detection unit detects and sends out temperature detection value
It send to battery management unit, battery management unit sends temperature alarm signal or non-alarm signal to PC according to temperature detection value
Host computer；If what PC host computers received is temperature alarm signal, it is determined as the temperature fault diagnosis detection of battery management system
Qualification is determined as that the temperature fault diagnosis detection of battery management system does not conform to if PC host computers receive the non-alarm signal of temperature
Lattice；
（4）The test method of over current fault diagnosis, including：
PC PC control multichannel battery simulators utilize testing current channel therein output voltage, and output voltage values are, pass through the current value of multichannel battery simulator, wherein V6For the voltage output of multichannel battery simulator
Value, R are fixed value resistance, and n is the amplification factor of current Hall sensor, current valueMore than the preset mistake of battery management system
Flow alarm threshold；Battery management unit detects and according to current detection value, sends the fault alarm signal of overcurrent or non-announcement
Signal is warned to PC host computers；If PC host computers receive the fault alarm signal of overcurrent, it is determined as battery management system
Over current fault diagnosis detection is qualified, if PC host computers receive the non-alarm signal of electric current, is determined as the overcurrent of battery management system
Fault diagnosis detection is unqualified；
（5）The test method of insulation resistance weakness fault diagnosis, including：
PC PC control insulation resistance simulator simulation output resistance, resistance valueIt is preset less than battery management system exhausted
Edge resistance weakness alarm threshold；After battery management unit carries out electrical resistance collection to insulation resistance simulator, according to the resistance of acquisition
Value, send insulation resistance weakness alarm signal or non-alarm signal to PC host computers；If what PC host computers received is insulation
The alarm signal of resistance weakness is then determined as that the insulation resistance weakness fault diagnosis detection of battery management system is qualified, if on PC
Position machine receives the non-alarm signal of insulation resistance, then is determined as the insulation resistance weakness fault diagnosis detection of battery management system not
It is qualified.
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