CN105759147B - A kind of integrated testing device of cell management system of electric automobile - Google Patents
A kind of integrated testing device of cell management system of electric automobile Download PDFInfo
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- CN105759147B CN105759147B CN201610207759.6A CN201610207759A CN105759147B CN 105759147 B CN105759147 B CN 105759147B CN 201610207759 A CN201610207759 A CN 201610207759A CN 105759147 B CN105759147 B CN 105759147B
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of integrated testing devices of cell management system of electric automobile, including central processing unit, battery pack, charge relay and adjustable charger；The control terminal of charge relay is connected to the first output end of the main control module in battery management system, the input terminal of adjustable charger is connected to the first output end of charge relay, the input terminal of battery pack is connected to the output end of adjustable charger, and the first output end of battery pack is respectively connected to the input terminal of the first acquisition module in battery management system and the input terminal of the second acquisition module；The second output terminal of battery pack is respectively connected to the input terminal and central processing unit of the high-pressure modular in battery management system；Main control module is also connect with central processing unit.The present invention is controlled due to using central processing unit, can be done directly slave, high-pressure modular address configuration, battery pack information configuration, the problems such as reducing the workload of technical support personnel, while avoiding live human operational error.
Description
Technical field
The invention belongs to electric vehicle engineering fields, more particularly, to the one of a kind of cell management system of electric automobile
Body test device.
Background technique
Electric car is because meet the guiding of national policy, and energy conservation and environmental protection, industry development was very swift and violent in recent years.Make at present
The electric car for using battery as power needs a set of battery management system to be managed it.
Cell management system of electric automobile BMS (Battery Management System) is mainly used for battery
Charging process and discharge process are managed, and improve service lifetime of accumulator, and provide the circuit system of relevant information for user
General name, generally by monitoring, protecting the part such as circuit, electrical, communication interface, heat management device to form.
This battery management system is made of several separate modules, including main control module, acquisition module and high-pressure modular.Wherein
Acquisition module is responsible for acquiring battery voltage, temperature, and high-pressure modular is responsible for acquiring charging and discharging currents, insulation resistance and calculating
SOC(State of Charge).Main control module is mainly information processing and system control.
For BMS because component is more, application scenarios are flexible and changeable, frequently encounter device Configuration error in work progress at the scene,
The problems such as product failure.Therefore it is badly in need of a set of integrated test system for batch production, guarantees production efficiency and quality.
Traditional production test method is based on individual module and is tested, and main purpose is the key that on detection individual module
Whether component is normal, and can individual module work normally, and test function is simple, and scene is single.However, the normal work of BMS
Need main control module, acquisition module and high-pressure modular networking cooperation.In BMS system, acquisition module and high-pressure modular are required
Main control module carries out address and battery pack configuration, and acquisition module and high-pressure modular will acquire data and report host analysis, host point
Action command, the concrete functions such as control charge and discharge, equilibrium, security protection are issued after analysis data.Traditional testing process is only tested
Individual module can not simulate live main control module, acquisition module, the cooperation scene between high-pressure modular, therefore relevant
Function is unable to test, and test is not comprehensive, leaves uncertain factor to in-site installation.
Meanwhile traditional test platform simulates true battery pack using divider resistance, therefore is unable to test charging current
And calculate the important indicators such as SOC.In addition, acquisition amplifier input impedance is not infinity, there is input biased electrical in amplifier input terminal
Stream is equivalent on one biggish resistance to divider resistance of parallel connection, causes certain systematic error, and to acquisition module
Acquisition precision impacts.Traditional test platform does not also protect battery voltage gathering line, is easy because artificial
Short circuit accident occurs for carelessness.
Fig. 1 shows traditional battery voltage analog device, including the electricity being sequentially connected in series between power supply VCC and ground
Hinder R147, resistance R148, resistance R150, resistance R151 and resistance R152；The wherein series connection of resistance R151 and resistance R152
End is for connecting battery BAT1；The series connection end of resistance R150 and resistance R151 is for connecting battery BAT2；Resistance R150 and
The series connection end of resistance R148 is for connecting battery BAT3；The series connection end of resistance R148 and resistance R147 is for connecting electricity
Pond BAT4.
Main control module has multiple groups control switch that can control external high-voltage relay, and traditional test platform is not right
Corresponding switch motion is detected, if stick together will be uncontrolled for relay contact.
Summary of the invention
In view of the drawbacks of the prior art, the purpose of the present invention is to provide a kind of one of cell management system of electric automobile
Change test device, it is intended to solve existing test platform not to battery voltage gathering line carry out protection cause be easy because of people
The problem of short circuit accident occurs for carelessness.
The present invention provides a kind of integrated testing device of cell management system of electric automobile, including central processing unit,
Battery pack, charge relay and adjustable charger；The control terminal of the charge relay is connected to the battery management system
In main control module the first output end, it is first defeated to be connected to the charge relay input terminal of the adjustable charger
Outlet, the input terminal of the battery pack are connected to the output end of the adjustable charger, the first output end of the battery pack
It is respectively connected to the input terminal of the first acquisition module in the battery management system and the input terminal of the second acquisition module；It is described
The second output terminal of battery pack be respectively connected to the high-pressure modular in the battery management system input terminal and the centre
Manage device；First output end of the high-pressure modular is connected to the first input end of the main control module, and the of the high-pressure modular
Two output ends are connected to the central processing unit, the output of the output end of first acquisition module and second acquisition module
End is connected to the second input terminal of the main control module；The main control module is also connect with the central processing unit.
Further, the integrated testing device and the main control module, described in the battery management system
Acquisition module is connected with the high-pressure modular by wire and cable connector.
Further, when work, tested slave is reported to the host module for data are acquired by CAN bus, together
When be also reported to the central processing unit to checking precision；The high-pressure modular passes through CAN bus for stagnation pressure, charging and discharging currents
It is reported to the host module with insulation resistance data, while being also reported to the central processing unit；For with the centre
The reason collected data of device compare.
Further, the charge relay is double-contact relay, and the double-contact relay is simultaneously by described
The control and detection of central processor and the main control module.
Further, the charge relay includes optocoupler D38, metal-oxide-semiconductor Q101, zener diode D39, two pole of pressure stabilizing
Pipe D41, diode D105, diode D40, resistance R132, resistance R133, resistance R 134, resistance R 135, resistance R136, electricity
Hinder R 113, resistance R 114, resistance R 120, capacitor C56 and capacitor C65；One end of the resistance R133 as EXT_P and
RELAY1_P, the other end of resistance R133 are connected to the first end of optocoupler D38, and the other end of resistance R133, which also passes through, to be sequentially connected in series
The resistance R135 and resistance R120 of connection are connected to the drain electrode of metal-oxide-semiconductor Q101, the series connection end of resistance R135 and resistance R120
It is connected to the second end of optocoupler D38, as RELAY_FL1, one end of resistance R134 is connect by capacitor C65 for one end of resistance R134
Ground, the other end of resistance R134 are connected to the third end of optocoupler D38, and the other end of resistance R134 also passes through resistance R136 and is grounded,
The 4th end of optocoupler D38 passes through resistance R132 connection power vd D；As RELAY1, resistance R113's is another for one end of resistance R113
One end is connected to the grid of metal-oxide-semiconductor Q101, and one end of resistance R114 is connected to the grid of metal-oxide-semiconductor Q101, and resistance R114's is another
End ground connection, the gate-source ground connection of metal-oxide-semiconductor Q101；The cathode of diode D40 is connected to the drain electrode of metal-oxide-semiconductor Q101, diode D40
Anode as RELAY1_N；The anode of zener diode D39 is connected to RELAY1_P, the cathode connection of zener diode D39
To the cathode of zener diode D41, the anode of zener diode D41 is connected to the drain electrode of metal-oxide-semiconductor Q101, zener diode D41
Anode also pass through capacitor C56 and be grounded；The cathode of diode D105 is connected to the drain electrode of metal-oxide-semiconductor Q101, the sun of diode D105
Pole ground connection.
Further, the voltage of the battery pack accesses slave module and the central processing unit simultaneously.
Further, the adjustable charger is used to charge to the battery pack, when charging to the battery pack
Charging current can be adjusted according to the actual situation.
Host, slave and high-pressure modular are attached by the present invention according to practical application scene before test, using true
Real battery pack is tested, and test platform central processing unit real time monitoring slave, the reported data of high-pressure modular and master are used
The transmitting order to lower levels of machine.Meanwhile test platform possesses the acquisition sensor of a whole set of standard, and by tested slave, high-pressure modular
Collection result and the result of test platform acquisition sensor compare, and guarantee the acquisition precision of equipment under test.Test platform
Central processing unit can also according to acquisition data prediction host movement, and detect host whether it is anticipated that regular event, from
And the normal work of the whole system guaranteed.Charge-discharge test is carried out using actual battery group, safety is good, and measuring accuracy is high,
Test item covering is comprehensive.Using can readback state relay, avoid because relay failure caused by overcharge, caused by over-discharge
Battery damage.It is charged using adjustable current charger to battery pack, charging current can be controlled according to the actual situation.Together
When, since present invention employs central processing units to control, slave, high-pressure modular address configuration, battery can be done directly
Group information configuration, the problems such as reducing the workload of technical support personnel, while avoiding live human operational error.
Detailed description of the invention
Fig. 1 is the circuit principle structure figure for the battery voltage analog device that the prior art provides；
Fig. 2 is the principle frame of the integrated testing device of cell management system of electric automobile provided in an embodiment of the present invention
Figure；
Fig. 3 is the circuit topology of the integrated testing device of cell management system of electric automobile provided in an embodiment of the present invention
Figure；
Fig. 4 is the charger in the integrated testing device of cell management system of electric automobile provided in an embodiment of the present invention
The circuit diagram of charging circuit；
Fig. 5 is the physical circuit figure of traditional charge relay circuit；
Fig. 6 be cell management system of electric automobile provided in an embodiment of the present invention integrated testing device in charge relay
The circuit diagram of device.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 2 is the frame diagram of the integrated testing device of cell management system of electric automobile provided in an embodiment of the present invention,
For ease of description, only parts related to embodiments of the present invention are shown, and details are as follows:
The integrated testing device of cell management system of electric automobile includes central processing unit 100, battery pack 101, charging
Relay 102 and adjustable charger 103；The control terminal of charge relay 102 is connected to the master control mould in battery management system
The input terminal of first output end of block 200, adjustable charger 103 is connected to the first output end of charge relay 102, battery
The input terminal of group 101 is connected to the output end of adjustable charger 103, and the first output end of battery pack 101 is respectively connected to electricity
The input terminal of the first acquisition module 202 in the management system of pond and the input terminal of the second acquisition module 203；The of battery pack 101
Two output ends are respectively connected to the input terminal and central processing unit of the high-pressure modular 201 in battery management system；High-pressure modular 201
The first output end be connected to the first input end of main control module 200, the second output terminal of high-pressure modular 201 is connected to centre
The output end of reason device 100, the output end of the first acquisition module 202 and the second acquisition module 203 is connected to main control module 200
Second input terminal；Main control module 200 is also connect with central processing unit 100.
Before test, main control module to be tested, acquisition module, high-pressure modular are connected to one by wire and cable connector
Change test device, and starts test.All test modules and integrated testing device CAN message follow " Q_SZQY 30001_
2014 battery management systems (BMS) internal controller local area network (CAN) communications protocol ".
Test critical workflow includes: to be joined by 4 MAX17830 chip collection voltages temperature in integrated testing device
It counts, while grabbing the message of main control module, high-pressure modular, acquisition module in CAN bus, and extract data, pass through MCU software
Judge whether each collection value, each transmitting order to lower levels are correct.Charger is opened, charging current is adjusted, on integrated testing device suddenly
You will acquire electric current by sensor, while crawl parses the data of main control module, high-pressure modular, acquisition module in CAN bus, lead to
It crosses MCU software and judges whether each collection value, each transmitting order to lower levels are correct.
Tested slave is reported to host module for data are acquired by CAN bus, while being also reported to test platform center
Processor is to checking precision；Tested high-pressure modular will be in the data such as stagnation pressure, charging and discharging currents, insulation resistance by CAN bus
Offer host module, at the same be also reported to test platform central processing unit to the collected number of test platform central processing unit
According to comparing.
On charge circuit, test platform is furnished with double-contact relay, and charger, actual battery group is adjusted；Double-contact
Tested person platform central processor and main control module control and detection, battery voltage access slave module simultaneously to relay simultaneously
With test platform central processing unit；Test platform central processing unit can control adjustable charger control battery pack charging current
Size.
Fig. 3 shows the circuit of the integrated testing device of cell management system of electric automobile provided in an embodiment of the present invention
Topological diagram.The function of test platform central processing unit includes human-computer interaction, battery voltage acquisition, discharge current measurement, relay
Control, relay status detection, charging current measurement, insulation measurement, sound-light alarm and CAN communication.Wherein, man-machine friendship
Mutual interface can choose touch screen or by RS232 connection portable machine, and simple by touch screen interaction, being not necessarily to other equipment can
It is more intuitive by portable machine interaction to obtain test mode, it can show current value, the history value for inquiring each physical quantity；Electricity
Cell voltage is acquired using the high-precision AD of test platform central processing unit, the electricity that collected voltage value and tested slave are reported
Pressure value compares, to identify whether slave works normally and the measuring accuracy of slave；Discharge current passes through acquisition electric discharge
The voltage value of a Hall element on circuit detects, and test platform central processing unit acquires this Hall element using an AD
Voltage obtain current value；Relay is disconnected by the GPIO of test platform central processing unit and tested host control and closed form
State, to control battery charging；Relay status detection passes through a double-contact relay realization, test platform central processing unit
Real-time detection relay status, to judge whether tested host according to normal need issues charging instruction；Charging current measurement
Equally completed by a Hall element on charge circuit；Insulation resistance is just drawn with total bear from always, passes through a set of insulation
Resistance measuring circuit gives the measurement of the central processing unit of host module and test platform respectively；When there is test item obstructed out-of-date, pass through
Buzzer and light emitting diode etc. alarm and indicate unacceptable project.
The physical quantity that main control module and test platform central processing unit compare after detecting simultaneously includes: charging current, electric discharge
Electric current, relay status, cell voltage, temperature, insulation resistance and stagnation pressure etc..
Battery pack has used software and hardware duplicate protection measure.On hardware on battery pack lead inline fuse, if
Occur can protect battery pack in the case that human operational error is shorted；Real-time detection battery voltage on software, when discovery electricity
Core voltage is 0 or less than 0 when to issue sound-light alarm.
In embodiments of the present invention, it is tested using true battery pack, including uses adjustable charger test electricity
The charging current of pond group carries out charging current detection compared with, and the detection of discharge current is compared with；Have on integrated testing device
Hall element can acquire charging and discharging currents, and module to be measured can also report charging and discharging currents, then be compared.
As shown in figure 4, exporting after rectification module rectifies in charging circuit using alternating current, current adjustment section is exported.When
When without charging, battery is to power load modules.When carrying out charging measurement, setting charging current is 2A, battery management first
System by acquisition charge circuit on Hall sensor obtain charging current, and by the measured value of measured value and test platform into
Row compare, if the two unanimously if by charging current promoted to 4A, equally carry out above-mentioned comparison, then be arranged charging current be
6A, 8A etc., if comparison result always if test and pass through, test crash if inconsistent, and issue alarm.
In embodiments of the present invention, charge relay is the key that relay in system, Fig. 5 show traditional charging after
The circuit of electric appliance 102, traditional test platform is not to the protection of charge relay, when host module detects that battery has filled
It is full, after transmitting order to lower levels disconnects charge relay, do not disconnected really in case of failures such as contact adhesions, and host module is not
It does detection and thinks that relay is already off, will charge always and cause the heavy losses such as over-charging of battery, damage, fire.It is based on
Test platform of the invention has carried out state-signal collection to relay control circuit contact position, forms closed loop, this is this hair
One of bright advantage.
In embodiments of the present invention, charge and discharge circuit is controlled using band auxiliary contact relay, is assisted after the actuating of relay
Contact can also act accordingly, test platform by the switch state of software detection relay, can accurate judgement its whether
It breaks down.
Test platform provided in an embodiment of the present invention returns inspection design, high reliablity using relay.Specific structure such as Fig. 6 institute
Show, the charge relay 102 in the integrated testing device of cell management system of electric automobile provided in an embodiment of the present invention wraps
Include optocoupler D38, metal-oxide-semiconductor Q101, zener diode D39, zener diode D41, diode D105, diode D40, resistance
R132, resistance R133, resistance R 134, resistance R 135, resistance R136, resistance R 113, resistance R 114, resistance R 120, capacitor
C56 and capacitor C65；One end of resistance R133 is connected to optocoupler D38 as EXT_P and RELAY1_P, the other end of resistance R133
First end, the other end of resistance R133 also passes through the resistance R135 being sequentially connected in series and resistance R120 is connected to metal-oxide-semiconductor
The series connection end of the drain electrode of Q101, resistance R135 and resistance R120 are connected to the second end of optocoupler D38, one end of resistance R134
As RELAY_FL1, one end of resistance R134 is grounded by capacitor C65, and the other end of resistance R134 is connected to the of optocoupler D38
Three ends, the other end of resistance R134 also pass through resistance R136 and are grounded, and the 4th end of optocoupler D38 passes through resistance R132 connection power supply
VDD；One end of resistance R113 is as RELAY1, and the other end of resistance R113 is connected to the grid of metal-oxide-semiconductor Q101, resistance R114's
One end is connected to the grid of metal-oxide-semiconductor Q101, the other end ground connection of resistance R114, the gate-source ground connection of metal-oxide-semiconductor Q101；Diode
The cathode of D40 is connected to the drain electrode of metal-oxide-semiconductor Q101, and the anode of diode D40 is as RELAY1_N；The sun of zener diode D39
Pole is connected to RELAY1_P, and the cathode of zener diode D39 is connected to the cathode of zener diode D41, zener diode D41's
Anode is connected to the drain electrode of metal-oxide-semiconductor Q101, and the anode of zener diode D41 also passes through capacitor C56 and is grounded；The yin of diode D105
Pole is connected to the drain electrode of metal-oxide-semiconductor Q101, the plus earth of diode D105.
Wherein, D38 is optocoupler, plays buffer action；D39 and D41 play voltage-stabilizing protection；RELAY1_N is relay
Pin is detected, RELAY1 is relay control pin.When relay closure, electric current flows into relay by RELAY1_P, from
RELAY1_N flows out relay, returns to big ground by D40 and Q101.Therefore RELAY1_N is low level；When RELAY1 is controlled
After relay disconnects, RELAY1_N is high level, and MCU is by the height of detection RELAY1_N it may determine that relay shape
State.
Advantages of the present invention: (1) this platform is before test by host, slave and high-pressure modular according to practical application scene
It is attached, is tested using true battery pack, monitor slave, high-pressure modular in real time using test platform central processing unit
Reported data and host transmitting order to lower levels.Meanwhile test platform possesses the acquisition sensor of a whole set of standard, and will it is tested from
The result of machine, the collection result of high-pressure modular and test platform acquisition sensor compares, and guarantees the acquisition essence of equipment under test
Degree.The central processing unit of test platform can also be according to the movement of acquisition data prediction host, and whether detects host according to pre-
Phase regular event, thus the normal work of the whole system guaranteed.Charge-discharge test, safety are carried out using actual battery group
Good, measuring accuracy is high, and test item covering is comprehensive.Using can readback state relay, avoid because relay failure caused by
It overcharges, battery damage caused by over-discharge.It is charged, can be controlled according to the actual situation to battery pack using adjustable current charger
Charging current processed.(2) the integrated testing device of cell management system of electric automobile provided in an embodiment of the present invention is because use
Central processing unit control, therefore can be done directly slave, high-pressure modular address configuration, battery pack information configuration reduces
The workload of technical support personnel, while the problems such as avoid live human operational error.Use test platform and tested module
The testing scheme that is compared after measuring simultaneously, the acquisition including voltage is with compared with, the acquiring compared with of electric current, insulation resistance
It acquires compared with, the acquisition of temperature is compared with.Whether the action command of test platform monitoring host computer is correct, including uses test flat
Platform monitors CAN bus communication, automatically parses bus data and instruction, the movement of synchronously simulating main control module, and judge master control mould
Whether the various functions of block are correct.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of integrated testing device of cell management system of electric automobile, which is characterized in that including central processing unit, battery
Group, charge relay and adjustable charger；
The control terminal of the charge relay is connected to the first output end of the main control module in the battery management system, described
The input terminal of adjustable charger is connected to the first output end of the charge relay, and the input terminal of the battery pack is connected to
First output end of the output end of the adjustable charger, the battery pack is respectively connected in the battery management system
The input terminal of the input terminal of first acquisition module and the second acquisition module；The second output terminal of the battery pack is respectively connected to institute
State the input terminal and the central processing unit of the high-pressure modular in battery management system；First output end of the high-pressure modular connects
It is connected to the first input end of the main control module, the second output terminal of the high-pressure modular is connected to the central processing unit, institute
It is second defeated to be connected to the main control module for the output end of the output end and second acquisition module of stating the first acquisition module
Enter end；The main control module is also connect with the central processing unit.
2. integrated testing device as described in claim 1, which is characterized in that the integrated testing device and the battery
The main control module, first acquisition module, the second acquisition module and the high-pressure modular in management system pass through cable
Connector connection.
3. integrated testing device as claimed in claim 2, which is characterized in that when work, the acquisition module is total by CAN
Line is reported to the main control module for data are acquired, while being also reported to the central processing unit to checking precision；The height
Stagnation pressure, charging and discharging currents and insulation resistance data are reported to the main control module by CAN bus by die block, while also being reported
To the central processing unit；For being compared with the collected data of the central processing unit.
4. integrated testing device as described in any one of claims 1-3, which is characterized in that the charge relay is double touchings
Point relay, the double-contact relay is simultaneously by the control and detection of the central processing unit and the main control module.
5. integrated testing device as described in any one of claims 1-3, which is characterized in that the adjustable charger is used for
It charges to the battery pack, charging current when charging to the battery pack can be adjusted according to the actual situation.
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| CN106443283A (en) * | 2016-11-21 | 2017-02-22 | 国网山东省电力公司电力科学研究院 | Testing platform and testing method for power management system of inspection robot of transformer substation |
| 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 |
| CN106886003B (en) * | 2017-01-19 | 2020-04-28 | 惠州市亿能电子有限公司 | Automatic testing system and method for battery monitoring module of electric vehicle |
| CN107037372A (en) * | 2017-04-27 | 2017-08-11 | 广东机电职业技术学院 | For battery pack and the trouble-shooter and diagnostic method of battery management system |
| CN107167677B (en) * | 2017-04-27 | 2020-08-14 | 广东机电职业技术学院 | Simulation test device and test method for battery management system |
| CN109004299A (en) * | 2018-08-08 | 2018-12-14 | 长沙拓扑陆川新材料科技有限公司 | A kind of method of battery system and its automatic distribution address |
| CN110126669B (en) * | 2019-04-28 | 2021-03-30 | 力高(山东)新能源技术有限公司 | New energy automobile management control system |
| CN111257767B (en) * | 2020-02-21 | 2022-07-12 | 深圳普瑞赛思检测技术有限公司 | Battery integration detection system and method |
| CN112440803B (en) * | 2020-11-10 | 2022-04-26 | 青岛鼎信通讯股份有限公司 | Redundancy monitoring method for series modules of medium-high voltage electric vehicle charging station |
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