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1. Product requirements:
Really simulate the operation of the power battery system, including power on and off of the power battery system, data collection , battery management, and battery data calibration, to meet the teaching needs of power battery principles and testing.
2. Technical parameter requirements
1. The tr*ning platform uses a 51V/20AH lithium iron phosphate power battery pack and is equipped with a universal battery management system to visually display the power battery connection method and charging and discharging process.
2. The battery pack of the tr*ning bench is composed of 16 3.2V/20AH single dynamic batteries, which are divided into two groups every 8 cells. Each group of batteries is equipped with a signal collector. The battery data collected by the signal collector passes The CAN bus is sent to the BMS manager for analysis and processing. The BMS manager reports the battery parameters and BMS management status to the host computer for display through the 485 interface.
3. The tr*ning platform is equipped with essential components for m*nstream electric vehicle battery management systems such as emergency switches, high-voltage interlock switches, m*n relays, precharge relays, precharge resistors, charging relays and Hall current sensors, which can truly demonstrate battery management. the whole process.
4. The tr*ning platform is equipped with a national standard 220V AC charging interface and a vehicle-mounted charging module. The vehicle charging system can be divided into fast charging and slow charging to achieve fast charging.
5. The tr*ning platform is equipped with a 12V low-voltage battery and a low-voltage charging module, which can demonstrate the charging process of high-voltage electricity to a 12V low-voltage battery.
6. The power battery system is equipped with a DC-DC conversion module, which can convert the high voltage of the power battery pack into 12V voltage to supply power to low-voltage batteries and other low-voltage electrical equipment.
7. When the battery manager detects an abnormal temperature, the over-temperature and under-temperature indicators light up to remind you.
8. Insulation detection function. The power battery high-voltage system is equipped with an insulation detection board, which can monitor the insulation condition of the power battery in a timely manner to prevent accidents due to leakage.
9. The load system supporting the intelligent platform can be adjusted from one to four levels to flexibly control the discharge efficiency of the battery pack. It can achieve a 20-minute discharge with 50% SOC rem*ning.
10. The high voltage inside the battery box is connected by copper bars. The copper bars have large overload capacity, strong connection reliability, and are neat and beautiful. At the same time, the copper bars must be equipped with insulating sleeves to prevent them from being touched, and wires cannot be used as substitutes.
11. There are two discharge modes on the operating console. One is internal discharge, discharging through the load of the equipment, and the other is external discharge, that is, connecting to the intelligent platform of pure electric vehicle drive system assembly, adjustment and detection technology for discharge.
12. The stand is equipped with universal casters with locking mechanisms ; the stand is made of steel, with flat panels. The ≥43-inch display screen is supported by a vertical pole and can rotate 360° left and right, and the tilt angle can be adjusted forward and backward.
13. The detection panel uses all-copper high-voltage, high-current, high-temperature resistance, and high-insulation 32A banana terminals. The detection panel uses a 10mm organic glass plate, which has sufficient strength and hardness to facilitate students to conduct testing.
14. The detection panel prints high-definition circuits to facilitate students to understand the composition and control principles of the power battery system.
15. In order to facilitate understanding of the internal structure of the power battery, a liftable panel control is used. When viewing and rep*ring the internal structure, it can be directly r*sed for easy operation.
16. Mechanical assembly and fitter assembly virtual simulation software: This software is developed based on unity3d, with optional 6-level image quality. It is equipped with the design and virtual disassembly and assembly of reducers and shafting structures, the design and simulation of common mechanical mechanisms, and a mechanism resource library. For a typical mechanical mechanism (virtual disassembly and assembly of a gasoline engine), the software is a whole software and cannot be individual resources.
A. Reducer design and virtual disassembly interface can choose worm gear bevel gear reducer, two-stage expanded cylindrical gear reducer, bevel cylindrical gear reducer, coaxial cylindrical gear reducer, bevel gear reducer, and one-stage cylindrical gear reducer. Gear reducer.
Worm bevel gear reducer: After entering the software, the assembly content is automatically played. Each step in the video has a text description
. Secondary expandable cylindrical gear reducer: After entering the software, the content is played in the form of a video. The video content should include: Part name ( Scan the QR code to see the names of parts), disassembly and assembly demonstration (including disassembly and assembly), virtual disassembly (including overall, low-speed shaft, medium-speed shaft, high-speed shaft, box cover, box seat)
conical cylindrical gear reducer, Coaxial cylindrical gear reducer, bevel gear reducer, first-level cylindrical gear reducer: click to enter and automatically jump to the edrawings interface. The models are all three-dimensional models . By clicking on the parts, the names of the parts are displayed, and the 360° view is av*lable Rotate, enlarge, reduce, translate, and at the same time, the entire reducer can be disassembled and assembled through the moving parts function. At the same time, you can select the home button to return to the original state of the reducer. The bevel gear reducer and the first-stage cylindrical gear reducer have added the function of inserting a cross section, and the cross section can be freely dragged to observe the internal structure of the reducer.
B. Shaft structure design and virtual disassembly and assembly interface optional parts recognition, disassembly and assembly demonstration, and actual operation.
1. Parts recognition: three-dimensional model and part name including helical gear, non-hole end cover, coupling, coupling key, shaft, gear key, hole end cover, shaft sleeve, deep groove ball bearing, any All parts can be rotated 360°
2. Disassembly and assembly demonstration: There are 2 built-in cases. When you move the mouse to the position of a cert*n part (except the base and bearing seat), the part will automatically enlarge and the name of the part will be displayed. It is equipped with disassembly and Assembly button, the function is to automatically complete the disassembly and assembly of the shaft system structure by the software. All three-dimensional scenes can be rotated, enlarged, reduced and translated 360° in all directions.
3. Practical operation: The three-dimensional parts are neatly placed on the table. Students manually select the corresponding parts and move them to the shaft system structure. The parts can be installed only when they are placed in the correct order and in the correct position. There is a restart button to facilitate students to restart. Conduct virtual experiments. When you move the mouse to a cert*n part position (except the base and bearing seat), the part will automatically enlarge and the part name will be displayed.
C. Common mechanical mechanism design and simulation, optional hinge four-bar mechanism design and analysis, I\II type crank rocker mechanism design and analysis, offset crank slider mechanism design and analysis, crank swing guide rod mechanism design and analysis, hinge Four-bar mechanism with integrated trajectory, eccentric linear-acting roller pushrod cam , and centering linear-acting flat-bottomed pushrodcam .
1. Each mechanism should be able to input corresponding parameters, and the software can automatically calculate the parameters, and can perform motion simulation and automatically draw curves.
D. The mechanism resource library includes 11 types of planar link mechanisms, 5 types of cam mechanisms, 6 types of gear mechanisms, 8 types of transmission mechanisms, 11 types of tightening mechanisms, 6 types of gear tr*n mechanisms, and 8 types of other mechanisms (mechanical equipment simulation)
E , virtual disassembly and assembly of gasoline engines, optional crankcase assembly and disassembly demonstration, crankcase virtual assembly, valve tr*n assembly and disassembly demonstration, valve tr*n virtual assembly
1. Crankcase assembly and disassembly demonstration and valve tr*n assembly and disassembly demonstration both have disassembly button, assembly button, restart, and decomposition observation button. When the mouse is moved to a cert*n part position, the part will automatically enlarge and the part name will be displayed. The software automatically completes the disassembly and assembly of the shaft system structure. When using the decomposition observation button, the 3D model of the crankcase or gas distribution system automatically displays an exploded view, which can be rotated, enlarged, reduced, and translated 360°.
2. The 3D parts of the crankcase virtual assembly and the gas distribution system virtual assembly are neatly arranged When placed on the desktop, students manually select the corresponding parts and move them to the mechanism. The parts can be installed only when they are placed in the correct order and in the correct position. There is a restart button to facilitate students to re-perform the virtual experiment. When you move the mouse to cert*n part locations, the part names are automatically displayed.
3. Requirements for auxiliary accessories
1. 3 single batteries
Rated capacity: 20ah
Nominal voltage: 3.2V
Size: 70*27*134mm
Weight: 500g (±10g)
Maximum continuous charging current: 20A 1.
Maximum continuous discharge current for 0C charging : 60A
Discharge termination voltage: 2. 5V protection lower limit is not less than 2.0V
Operating temperature: charging -10^ 45 Discharging -20~60
2. 1 DC contactor
Coil operating voltage: 12V
Maximum voltage Voltage (Max.): 16V
Maximum pull-in voltage: 9V
Minimum release voltage: 1.2V
Coil current Coil Current: 267mA
Coil power consumption Coi1 Power (20C): 3.5w
Coil resistance: 45Ω
M*n contact working access 12-1200V
M*n contact overcurrent: 90A 30S
500V Insulation resistance: ≥100MΩ
pull-in time (including contact bounce): ≤20ms
3. 1 Hall sensor
Power supply voltage: ±12V
Accuracy: ±1%
Insulation voltage: between primary and secondary circuits: 5KV effective value/ 50Hz/1 minute
Offset voltage: When primary current IN=0, maximum value: +25mV or 0.02mA
Temperature drift (-25.C..+75*C): Maximum value: ≤+0.08%/°C
frequency Range: 0- 50KHz
Operating temperature: -25C... + 70°C
Power: 0.5W
Overload capacity: 5 times nominal input
4. Configuration requirements:
1. Intelligent power battery PACK tr*ning test bench;
2.7kw charging gun ;
3. 1 set of fault setting system
4. Can set faults > 10
5. Working temperature -40℃ - +50℃
5. Support tr*ning:
1. Power battery pack cell performance test
2. Power battery series and parallel performance test
3. Cognition of the composition of the new energy vehicle
power battery system 4. Cognition of the distributed battery management and control principles of the new energy vehicle
5. Control logical relationships of each operating state of the new energy vehicle power battery, and mastering power battery power-on, power-off, and charging control
6 . New energy power battery balance management and control tr*ning
7. Power battery pack overcharge and over-discharge control test
8. AC charging system cognition
9. Power battery contactor performance test test
10. New energy vehicle high-voltage interlock integrity performance test Test
11. Practical tr*ning on setting the m*n performance parameters of power battery alarm
12. Practical tr*ning on high-voltage safe operation and inspection of power battery
13. Practical tr*ning on fault diagnosis and analysis of battery management system (BMS)
14. Practical tr*ning on fault diagnosis and analysis of power battery data collector Tr*ning
15. Vehicle slow charging fault diagnosis and analysis Practical tr*ning
16. DC-DC conversion system cognition
17. DC-DC fault diagnosis and analysis
18. Inspection and replacement of low-voltage batteries
6. Power battery smart teaching test and assessment system:
1. System requirements
(1) The intelligent simulation system dynamically monitors the power battery pack and conducts intelligent tr*ning on the power battery management system through the human-computer interaction interface. Desk graphical control. The graphics include power battery pack voltage, current, temperature, internal resistance, SOH, SOC, high-voltage interlock status, etc.
(2) The intelligent simulation system is installed on a 43-inch high-definition multimedia terminal for dynamic display. The intelligent teaching system realizes information interaction with the intelligent tr*ning platform of the power battery management system through communication protocols.
(3) When the system starts, it enters the self-test state, detects the BMS m*n control board, two BMS slave control boards, CAN communication, 485 communication, etc., and judges the test results. If the results are abnormal, they can be re-tested. The test results The system can be started normally. When powering on, the BMS m*n control board is powered on first. After a delay of 1 second, the two BMS slave control board control circuits are powered on. Then the acquisition circuit of the BMS slave control board is powered on and starts to collect voltage, temperature, discharge (or charge). ) current. In the discharge state, when the battery status is normal, the precharge relay is turned on first, the m*n relay is turned on after 2 seconds, and the precharge relay is turned off with a delay of 1 second. In the charging state, first open the m*n relay, and then close the charging relay after 1 second. When powering off, first disconnect the precharge relay and then the m*n relay in the discharge state. Then close the acquisition circuit of the BMS slave control board to stop battery parameter collection, then disconnect the control circuit of the BMS slave control board, and then disconnect the power supply of the m*n control board after 2 seconds.
(4) The system has four m*n functions: theory, practical tr*ning, examination, and calibration.
The theoretical module includes four chapters: power battery pack, power battery management system, power battery on-board charging system and DC-DC conversion system, which can meet the needs of theoretical teaching and can play teaching resources.
①The power battery pack m*nly expl*ns lithium iron phosphate batteries, ternary lithium batteries, lead-acid batteries, nickel metal hydride batteries, fuel cells, m*ntenance switches, fuses, and high-voltage interlock components. Through courseware, animations, micro-lectures and other forms, students can learn about the structure and working principle of several common batteries and the performance comparison of several common batteries, as well as the m*ntenance switch function, fuse structure and function, interlocking principle, etc. And the high-voltage interlock mode can be adjusted and switched through the teaching system, showing the two interlock principles and detection methods of the current m*nstream interlock methods, PWM detection and constant voltage detection.
② In addition, a virtual game link is added to the power battery pack module. Students use testing equipment to test the cells, select appropriate power batteries, assemble the power batteries according to the provided requirements, and conduct virtual tr*ning on the characteristics of series and parallel power batteries.
③Power battery management system m*nly expl*ns the composition, working mode and functions of the battery management system.
④ In the power-on, power-off, and charging modes of the power battery working mode, the flow of current in the circuit is controlled, such as precharge contactor, m*n negative contactor, m*n positive contactor, etc. Through the integrated combination of theory and reality, the BMS control logic in the power battery working mode is clearly displayed. At the same time, in conjunction with practical tr*ning courses, courses and practical tr*ning are connected in a task-led manner, and practical tr*ning is taught in an integrated manner. Ability to test components through interactive interface tr*ning to determine whether components are working properly, including m*n positive contactors, precharge contactors, charging contactors, etc.
⑤ In the battery manager function, data collection (temperature, voltage, internal resistance), overcharge, overtemperature, low temperature, equalization, fault diagnosis, etc., by adjusting the BMS data parameters, the console can quickly respond to the corresponding phenomena to achieve the ideal The purpose of integrating virtual and actual teaching.
⑥Power battery on-board charging system
The on-board charging system m*nly expl*ns the AC charging port, charging current principle, on-board charging process, and displays the charging process in the energy teaching system.
⑦DC-DC conversion system The
DC-DC conversion system expl*ns the process and control principles of power battery conversion from high-voltage DC to low-voltage DC.
⑧The supporting course resource package includes animations such as lithium iron phosphate batteries, ternary lithium batteries, nickel metal hydride batteries, lead-acid batteries, fuel cells, DC converters, battery manager structures, battery manager functions, etc.
2. Calibration module
power battery PACK f*lure Troubleshooting and Detection In the intelligent teaching system, the BMS system parameters can be calibrated. The calibration parameters are divided into level one and level two. After the data is edited and calibrated, when the trigger threshold is reached, a corresponding fault reminder will appear on the interactive interface; the parameters that can be calibrated are
single The voltage is too high.
The cell voltage is too low.
The charging current is too large.
The discharge current is too large. The
cell voltage difference is too large. The
total
battery voltage is too high. The total battery voltage is too low.
The battery temperature is too high.
The battery temperature difference is too large.
The insulation is too low
. 3. The tr*ning module
adopts intelligent In combination with the intelligent system and the operating console, the m*n tr*ning items that can be realized on the intelligent power battery management PACK tr*ning and testing platform include:
preparation before operation,
recognition and operation of tr*ning equipment,
power battery charge and discharge characteristics experiment,
single battery Resistance characteristic experiment
Power battery balancing characteristic experiment
Power battery over-temperature experiment
Power battery low temperature experiment
Power battery over-discharge experiment
Power battery overcharge experiment
4. Assessment module
⑴ During the assessment process, the diagnostic instrument in the system can be used to read relevant fault codes and data streams ,The data stream includes the lowest single cell voltage, the highest single cell voltage, the lowest single cell temperature, the highest single cell temperature, the lowest battery voltage number, the highest battery number, the lowest battery temperature number, the highest battery number, and the resistance, the current total voltage of the battery pack, the current total current of the battery pack, SOC, insulation resistance value, high voltage interlock status, contactor closed status, battery pack capacity, number of cells, insulation resistance value, interlock status, each contactor status, It can read charging current, output current, SOC, charging gun CC/CP status, etc. It can also read and clear fault codes of the power battery system, which is a real simulation of fault diagnosis and troubleshooting methods and analysis steps.
⑵Common fault points
01 High voltage interlock fault
02 Precharge contactor sintering fault
03 M*n positive contactor not working fault
04 AC unable to charge CC fault
05 AC unable to charge CP fault
06 Single battery abnormality fault
07 Power battery balancing abnormality fault
08 Power battery overcharge fault
欢迎咨询YLXNYDC-13 Intelligent power battery detection training platform相关问题,我们是源头工厂，有标准工业厂房生产基地，欢迎前来考察，如有YLXNYDC-13 Intelligent power battery detection training platform其他问题，可联系19957812178
Really simulate the operation of the power battery system, including power on and off of the power battery system, data collection , battery management, and battery data calibration, to meet the teaching needs of power battery principles and testing.
2. Technical parameter requirements
1. The tr*ning platform uses a 51V/20AH lithium iron phosphate power battery pack and is equipped with a universal battery management system to visually display the power battery connection method and charging and discharging process.
2. The battery pack of the tr*ning bench is composed of 16 3.2V/20AH single dynamic batteries, which are divided into two groups every 8 cells. Each group of batteries is equipped with a signal collector. The battery data collected by the signal collector passes The CAN bus is sent to the BMS manager for analysis and processing. The BMS manager reports the battery parameters and BMS management status to the host computer for display through the 485 interface.
3. The tr*ning platform is equipped with essential components for m*nstream electric vehicle battery management systems such as emergency switches, high-voltage interlock switches, m*n relays, precharge relays, precharge resistors, charging relays and Hall current sensors, which can truly demonstrate battery management. the whole process.
4. The tr*ning platform is equipped with a national standard 220V AC charging interface and a vehicle-mounted charging module. The vehicle charging system can be divided into fast charging and slow charging to achieve fast charging.
5. The tr*ning platform is equipped with a 12V low-voltage battery and a low-voltage charging module, which can demonstrate the charging process of high-voltage electricity to a 12V low-voltage battery.
6. The power battery system is equipped with a DC-DC conversion module, which can convert the high voltage of the power battery pack into 12V voltage to supply power to low-voltage batteries and other low-voltage electrical equipment.
7. When the battery manager detects an abnormal temperature, the over-temperature and under-temperature indicators light up to remind you.
8. Insulation detection function. The power battery high-voltage system is equipped with an insulation detection board, which can monitor the insulation condition of the power battery in a timely manner to prevent accidents due to leakage.
9. The load system supporting the intelligent platform can be adjusted from one to four levels to flexibly control the discharge efficiency of the battery pack. It can achieve a 20-minute discharge with 50% SOC rem*ning.
10. The high voltage inside the battery box is connected by copper bars. The copper bars have large overload capacity, strong connection reliability, and are neat and beautiful. At the same time, the copper bars must be equipped with insulating sleeves to prevent them from being touched, and wires cannot be used as substitutes.
11. There are two discharge modes on the operating console. One is internal discharge, discharging through the load of the equipment, and the other is external discharge, that is, connecting to the intelligent platform of pure electric vehicle drive system assembly, adjustment and detection technology for discharge.
12. The stand is equipped with universal casters with locking mechanisms ; the stand is made of steel, with flat panels. The ≥43-inch display screen is supported by a vertical pole and can rotate 360° left and right, and the tilt angle can be adjusted forward and backward.
13. The detection panel uses all-copper high-voltage, high-current, high-temperature resistance, and high-insulation 32A banana terminals. The detection panel uses a 10mm organic glass plate, which has sufficient strength and hardness to facilitate students to conduct testing.
14. The detection panel prints high-definition circuits to facilitate students to understand the composition and control principles of the power battery system.
15. In order to facilitate understanding of the internal structure of the power battery, a liftable panel control is used. When viewing and rep*ring the internal structure, it can be directly r*sed for easy operation.
16. Mechanical assembly and fitter assembly virtual simulation software: This software is developed based on unity3d, with optional 6-level image quality. It is equipped with the design and virtual disassembly and assembly of reducers and shafting structures, the design and simulation of common mechanical mechanisms, and a mechanism resource library. For a typical mechanical mechanism (virtual disassembly and assembly of a gasoline engine), the software is a whole software and cannot be individual resources.
A. Reducer design and virtual disassembly interface can choose worm gear bevel gear reducer, two-stage expanded cylindrical gear reducer, bevel cylindrical gear reducer, coaxial cylindrical gear reducer, bevel gear reducer, and one-stage cylindrical gear reducer. Gear reducer.
Worm bevel gear reducer: After entering the software, the assembly content is automatically played. Each step in the video has a text description
. Secondary expandable cylindrical gear reducer: After entering the software, the content is played in the form of a video. The video content should include: Part name ( Scan the QR code to see the names of parts), disassembly and assembly demonstration (including disassembly and assembly), virtual disassembly (including overall, low-speed shaft, medium-speed shaft, high-speed shaft, box cover, box seat)
conical cylindrical gear reducer, Coaxial cylindrical gear reducer, bevel gear reducer, first-level cylindrical gear reducer: click to enter and automatically jump to the edrawings interface. The models are all three-dimensional models . By clicking on the parts, the names of the parts are displayed, and the 360° view is av*lable Rotate, enlarge, reduce, translate, and at the same time, the entire reducer can be disassembled and assembled through the moving parts function. At the same time, you can select the home button to return to the original state of the reducer. The bevel gear reducer and the first-stage cylindrical gear reducer have added the function of inserting a cross section, and the cross section can be freely dragged to observe the internal structure of the reducer.
B. Shaft structure design and virtual disassembly and assembly interface optional parts recognition, disassembly and assembly demonstration, and actual operation.
1. Parts recognition: three-dimensional model and part name including helical gear, non-hole end cover, coupling, coupling key, shaft, gear key, hole end cover, shaft sleeve, deep groove ball bearing, any All parts can be rotated 360°
2. Disassembly and assembly demonstration: There are 2 built-in cases. When you move the mouse to the position of a cert*n part (except the base and bearing seat), the part will automatically enlarge and the name of the part will be displayed. It is equipped with disassembly and Assembly button, the function is to automatically complete the disassembly and assembly of the shaft system structure by the software. All three-dimensional scenes can be rotated, enlarged, reduced and translated 360° in all directions.
3. Practical operation: The three-dimensional parts are neatly placed on the table. Students manually select the corresponding parts and move them to the shaft system structure. The parts can be installed only when they are placed in the correct order and in the correct position. There is a restart button to facilitate students to restart. Conduct virtual experiments. When you move the mouse to a cert*n part position (except the base and bearing seat), the part will automatically enlarge and the part name will be displayed.
C. Common mechanical mechanism design and simulation, optional hinge four-bar mechanism design and analysis, I\II type crank rocker mechanism design and analysis, offset crank slider mechanism design and analysis, crank swing guide rod mechanism design and analysis, hinge Four-bar mechanism with integrated trajectory, eccentric linear-acting roller pushrod cam , and centering linear-acting flat-bottomed pushrodcam .
1. Each mechanism should be able to input corresponding parameters, and the software can automatically calculate the parameters, and can perform motion simulation and automatically draw curves.
D. The mechanism resource library includes 11 types of planar link mechanisms, 5 types of cam mechanisms, 6 types of gear mechanisms, 8 types of transmission mechanisms, 11 types of tightening mechanisms, 6 types of gear tr*n mechanisms, and 8 types of other mechanisms (mechanical equipment simulation)
E , virtual disassembly and assembly of gasoline engines, optional crankcase assembly and disassembly demonstration, crankcase virtual assembly, valve tr*n assembly and disassembly demonstration, valve tr*n virtual assembly
1. Crankcase assembly and disassembly demonstration and valve tr*n assembly and disassembly demonstration both have disassembly button, assembly button, restart, and decomposition observation button. When the mouse is moved to a cert*n part position, the part will automatically enlarge and the part name will be displayed. The software automatically completes the disassembly and assembly of the shaft system structure. When using the decomposition observation button, the 3D model of the crankcase or gas distribution system automatically displays an exploded view, which can be rotated, enlarged, reduced, and translated 360°.
2. The 3D parts of the crankcase virtual assembly and the gas distribution system virtual assembly are neatly arranged When placed on the desktop, students manually select the corresponding parts and move them to the mechanism. The parts can be installed only when they are placed in the correct order and in the correct position. There is a restart button to facilitate students to re-perform the virtual experiment. When you move the mouse to cert*n part locations, the part names are automatically displayed.
3. Requirements for auxiliary accessories
1. 3 single batteries
Rated capacity: 20ah
Nominal voltage: 3.2V
Size: 70*27*134mm
Weight: 500g (±10g)
Maximum continuous charging current: 20A 1.
Maximum continuous discharge current for 0C charging : 60A
Discharge termination voltage: 2. 5V protection lower limit is not less than 2.0V
Operating temperature: charging -10^ 45 Discharging -20~60
2. 1 DC contactor
Coil operating voltage: 12V
Maximum voltage Voltage (Max.): 16V
Maximum pull-in voltage: 9V
Minimum release voltage: 1.2V
Coil current Coil Current: 267mA
Coil power consumption Coi1 Power (20C): 3.5w
Coil resistance: 45Ω
M*n contact working access 12-1200V
M*n contact overcurrent: 90A 30S
500V Insulation resistance: ≥100MΩ
pull-in time (including contact bounce): ≤20ms
3. 1 Hall sensor
Power supply voltage: ±12V
Accuracy: ±1%
Insulation voltage: between primary and secondary circuits: 5KV effective value/ 50Hz/1 minute
Offset voltage: When primary current IN=0, maximum value: +25mV or 0.02mA
Temperature drift (-25.C..+75*C): Maximum value: ≤+0.08%/°C
frequency Range: 0- 50KHz
Operating temperature: -25C... + 70°C
Power: 0.5W
Overload capacity: 5 times nominal input
4. Configuration requirements:
1. Intelligent power battery PACK tr*ning test bench;
2.7kw charging gun ;
3. 1 set of fault setting system
4. Can set faults > 10
5. Working temperature -40℃ - +50℃
5. Support tr*ning:
1. Power battery pack cell performance test
2. Power battery series and parallel performance test
3. Cognition of the composition of the new energy vehicle
power battery system 4. Cognition of the distributed battery management and control principles of the new energy vehicle
5. Control logical relationships of each operating state of the new energy vehicle power battery, and mastering power battery power-on, power-off, and charging control
6 . New energy power battery balance management and control tr*ning
7. Power battery pack overcharge and over-discharge control test
8. AC charging system cognition
9. Power battery contactor performance test test
10. New energy vehicle high-voltage interlock integrity performance test Test
11. Practical tr*ning on setting the m*n performance parameters of power battery alarm
12. Practical tr*ning on high-voltage safe operation and inspection of power battery
13. Practical tr*ning on fault diagnosis and analysis of battery management system (BMS)
14. Practical tr*ning on fault diagnosis and analysis of power battery data collector Tr*ning
15. Vehicle slow charging fault diagnosis and analysis Practical tr*ning
16. DC-DC conversion system cognition
17. DC-DC fault diagnosis and analysis
18. Inspection and replacement of low-voltage batteries
6. Power battery smart teaching test and assessment system:
1. System requirements
(1) The intelligent simulation system dynamically monitors the power battery pack and conducts intelligent tr*ning on the power battery management system through the human-computer interaction interface. Desk graphical control. The graphics include power battery pack voltage, current, temperature, internal resistance, SOH, SOC, high-voltage interlock status, etc.
(2) The intelligent simulation system is installed on a 43-inch high-definition multimedia terminal for dynamic display. The intelligent teaching system realizes information interaction with the intelligent tr*ning platform of the power battery management system through communication protocols.
(3) When the system starts, it enters the self-test state, detects the BMS m*n control board, two BMS slave control boards, CAN communication, 485 communication, etc., and judges the test results. If the results are abnormal, they can be re-tested. The test results The system can be started normally. When powering on, the BMS m*n control board is powered on first. After a delay of 1 second, the two BMS slave control board control circuits are powered on. Then the acquisition circuit of the BMS slave control board is powered on and starts to collect voltage, temperature, discharge (or charge). ) current. In the discharge state, when the battery status is normal, the precharge relay is turned on first, the m*n relay is turned on after 2 seconds, and the precharge relay is turned off with a delay of 1 second. In the charging state, first open the m*n relay, and then close the charging relay after 1 second. When powering off, first disconnect the precharge relay and then the m*n relay in the discharge state. Then close the acquisition circuit of the BMS slave control board to stop battery parameter collection, then disconnect the control circuit of the BMS slave control board, and then disconnect the power supply of the m*n control board after 2 seconds.
(4) The system has four m*n functions: theory, practical tr*ning, examination, and calibration.
The theoretical module includes four chapters: power battery pack, power battery management system, power battery on-board charging system and DC-DC conversion system, which can meet the needs of theoretical teaching and can play teaching resources.
①The power battery pack m*nly expl*ns lithium iron phosphate batteries, ternary lithium batteries, lead-acid batteries, nickel metal hydride batteries, fuel cells, m*ntenance switches, fuses, and high-voltage interlock components. Through courseware, animations, micro-lectures and other forms, students can learn about the structure and working principle of several common batteries and the performance comparison of several common batteries, as well as the m*ntenance switch function, fuse structure and function, interlocking principle, etc. And the high-voltage interlock mode can be adjusted and switched through the teaching system, showing the two interlock principles and detection methods of the current m*nstream interlock methods, PWM detection and constant voltage detection.
② In addition, a virtual game link is added to the power battery pack module. Students use testing equipment to test the cells, select appropriate power batteries, assemble the power batteries according to the provided requirements, and conduct virtual tr*ning on the characteristics of series and parallel power batteries.
③Power battery management system m*nly expl*ns the composition, working mode and functions of the battery management system.
④ In the power-on, power-off, and charging modes of the power battery working mode, the flow of current in the circuit is controlled, such as precharge contactor, m*n negative contactor, m*n positive contactor, etc. Through the integrated combination of theory and reality, the BMS control logic in the power battery working mode is clearly displayed. At the same time, in conjunction with practical tr*ning courses, courses and practical tr*ning are connected in a task-led manner, and practical tr*ning is taught in an integrated manner. Ability to test components through interactive interface tr*ning to determine whether components are working properly, including m*n positive contactors, precharge contactors, charging contactors, etc.
⑤ In the battery manager function, data collection (temperature, voltage, internal resistance), overcharge, overtemperature, low temperature, equalization, fault diagnosis, etc., by adjusting the BMS data parameters, the console can quickly respond to the corresponding phenomena to achieve the ideal The purpose of integrating virtual and actual teaching.
⑥Power battery on-board charging system
The on-board charging system m*nly expl*ns the AC charging port, charging current principle, on-board charging process, and displays the charging process in the energy teaching system.
⑦DC-DC conversion system The
DC-DC conversion system expl*ns the process and control principles of power battery conversion from high-voltage DC to low-voltage DC.
⑧The supporting course resource package includes animations such as lithium iron phosphate batteries, ternary lithium batteries, nickel metal hydride batteries, lead-acid batteries, fuel cells, DC converters, battery manager structures, battery manager functions, etc.
2. Calibration module
power battery PACK f*lure Troubleshooting and Detection In the intelligent teaching system, the BMS system parameters can be calibrated. The calibration parameters are divided into level one and level two. After the data is edited and calibrated, when the trigger threshold is reached, a corresponding fault reminder will appear on the interactive interface; the parameters that can be calibrated are
single The voltage is too high.
The cell voltage is too low.
The charging current is too large.
The discharge current is too large. The
cell voltage difference is too large. The
total
battery voltage is too high. The total battery voltage is too low.
The battery temperature is too high.
The battery temperature difference is too large.
The insulation is too low
. 3. The tr*ning module
adopts intelligent In combination with the intelligent system and the operating console, the m*n tr*ning items that can be realized on the intelligent power battery management PACK tr*ning and testing platform include:
preparation before operation,
recognition and operation of tr*ning equipment,
power battery charge and discharge characteristics experiment,
single battery Resistance characteristic experiment
Power battery balancing characteristic experiment
Power battery over-temperature experiment
Power battery low temperature experiment
Power battery over-discharge experiment
Power battery overcharge experiment
4. Assessment module
⑴ During the assessment process, the diagnostic instrument in the system can be used to read relevant fault codes and data streams ,The data stream includes the lowest single cell voltage, the highest single cell voltage, the lowest single cell temperature, the highest single cell temperature, the lowest battery voltage number, the highest battery number, the lowest battery temperature number, the highest battery number, and the resistance, the current total voltage of the battery pack, the current total current of the battery pack, SOC, insulation resistance value, high voltage interlock status, contactor closed status, battery pack capacity, number of cells, insulation resistance value, interlock status, each contactor status, It can read charging current, output current, SOC, charging gun CC/CP status, etc. It can also read and clear fault codes of the power battery system, which is a real simulation of fault diagnosis and troubleshooting methods and analysis steps.
⑵Common fault points
01 High voltage interlock fault
02 Precharge contactor sintering fault
03 M*n positive contactor not working fault
04 AC unable to charge CC fault
05 AC unable to charge CP fault
06 Single battery abnormality fault
07 Power battery balancing abnormality fault
08 Power battery overcharge fault
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