DYXNYC-23 electric vehicle high-voltage safety system experimental device

Release time：2024-05-28 17:30viewed：times

1. Functional features
1. This equipment completely displays the high-voltage safety protection system of electric vehicles (including the power supply system, motor system, display system and BMS physical components of electric vehicles as basic components, which can reflect the electrical principles and power-on and off logic of the high-voltage system ; high-voltage system Safety protection measures and safety detection, power distribution system: install a total positive relay, a total negative relay, a precharge relay and a precharge resistor), which can dynamically simulate the operating status and working process of the vehicle's high-voltage safety protection system. 2. The panel is made of 4mm thick high-grade aluminum-plastic panels that are corrosion-resistant, impact-resistant, pollution-resistant, fire-proof, and moisture-proof. The surface is sprayed with primer using a special process; the panel is printed with color circuit diagrams and working principle diagrams that will never fade (including: ①Complete electric vehicle high-voltage system ②Complete motor control system ③Complete lithium iron phosphate battery pack management system and display system); students can intuitively compare the structural schematics and actual objects of the high-voltage safety protection system of electric vehicles to understand and analyze electric vehicles The working principle of the vehicle's high-voltage safety protection system. 3. The panel is equipped with an ignition switch, a real lithium iron phosphate battery pack for electric vehicles, a safety m*ntenance plug module for electric vehicles, a high-voltage circuit simulation system, a safety relay component, a leakage protection module and a simulated control switch. 4. The panel part adopts 1.5mm cold plate stamping structure, with beautiful appearance; the bottom part adopts steel structure welding, the surface is spray-coated, with self-locking caster device, and the base of the teaching board is equipped with a tabletop of about 30cm for easy placement. Materials, light testing instruments, etc. 5. The work uses the electric vehicle battery pack power supply. The 12V DC power supply for other systems is provided by the DC/DC module. The national standard 220V charging port and charging gun for electric vehicles are installed to truly realize the charging operation of electric vehicles. 6. Real electric vehicle high-voltage safety protection system components, safety relays (including total positive relay, total negative relay, precharge relay) can be controlled and worked normally through the high-voltage safety system control unit of electric vehicles; the high-voltage safety system control unit adopts CAN -BUS communication control; 7. Real electric vehicle Hall-type current sensor , the system actually detects the current data flow and transmits it through the BMS control unit CAN bus to the 7-inch color screen monitor for real display. 8. The 7-inch color screen display of the BMS control unit uses CAN-BUS communication to control wake-up and other signals. 9. The 7-inch color screen display of the BMS control unit uses CAN-BUS communication to display the real signals of the voltage, current, temperature and other status of each single lithium iron phosphate battery. 10. The high-voltage safety system control unit uses CAN-BUS communication to display safety alarm, "READY" and other signal information. 11. The motor system of a real electric vehicle can operate the electric vehicle motor under various working conditions normally; after the high-voltage safety system alarms, the safety relay is controlled through CAN-BUS communication and the motor is shut down. 11. The high-voltage safety system of a real electric vehicle. After the national standard charging gun is inserted into the charging port of the equipment; the high-voltage safety system controls the safety relay operation through CAN-BUS communication, and the 7-inch color screen display synchronously displays the charging conditions through CAN-BUS communication. 12. Real electric vehicle high-voltage safety pre-charging device. The pre-charging relay can be controlled and operated normally through the high-voltage safety system control unit of the electric vehicle. The high-voltage safety system control unit adopts CAN-BUS communication control. 13. The real electric vehicle discharge device (motor system, etc.) can operate the electric vehicle motor under various working conditions normally; the current, voltage and other working conditions of the discharge device (motor system, etc.) are controlled and detected through CAN-BUS communication and the BMS control unit CAN The bus transmits the real synchronous display on the 7-inch color screen monitor. 14. 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, zoom in, zoom out, pan, and move parts to disassemble and assemble the entire reducer. 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 location (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 push rod cam , and centering linear-acting flat-bottomed push rod cam .
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.
2. Technical specifications
1. External power supply: AC 220V±10% 50Hz
2. Working voltage: DC 12V, etc.
High voltage source: 72V
lithium iron phosphate battery pack: 72V
3. Working temperature: -40℃～+50℃
4. Overall dimensions : 1240×600×1700mm (length×width×height)
3. Experimental projects
1. Electric vehicle high-voltage protection principle experiment
2. High-voltage circuit leakage protection simulation principle
3. High-voltage battery disassembly and m*ntenance experiment
4. High-voltage circuit m*ntenance operation simulation experiment, etc.
4. Configuration list (each unit)

serial number	name	Specifications and models	unit	quantity
1	Control panel and test bench	1. Equipped with various detection terminals and color schematic diagrams 2. Cold plate stamping forming mobile stand: 12406001700mm (length × width × height) 3. With 4 movable casters:	set	1
2	Operating platform for electric vehicle motors, batteries and other components	1. 40403mm square tube welding bench: 1240600700mm (length × width × height) 2. With 4 movable casters: 3. Motor, battery and other components	set	1
3	Electric vehicle lithium iron phosphate battery	Lithium iron phosphate battery, with iron shell assembly and wiring; 72V with CAN-BUS communication and battery manager	set	1
4	electric car motor	1kW motor with Hall sensor Rated voltage: 72V Cooling method: *r cooling	set	1
5	Electric vehicle brushless DC motor controller	Rated voltage: 72V	set	1
6	BMS-7 inch color screen monitor	With CAN-BUS communication	set	1
7	electronic accelerator pedal	Supporting	Only	1
8	Ignition Switch	Supporting	Only	1
9	brake switch	Supporting	Only	1
10	gear switch	Supporting	Only	1
11	car charger	72V5A matching	tower	1
12	DC-DC converter	(72/12V)	set	1
13	Electric vehicle charging gun and socket	National standard for electric vehicles, CEBEA	set	1
14	battery management system	With CAN-BUS communication; lithium iron phosphate battery terminal control ECU; lithium iron phosphate battery central control ECU; lithium iron phosphate battery display control ECU vehicle ECU;	set	1
15	Electric vehicle high voltage safety system	High-voltage control loop system (high-current total positive relay/m*n negative relay/pre-voltage relay, etc.); high-voltage detection loop system (insulation/current detection sensor); electric vehicle high-voltage safety control ECU (with CAN-BUS communication);	set	1
16	Hall type current sensor	National standard products	set	1
17	Fault simulation and troubleshooting device	Supporting	set	1
18	Equipment Teacher's Manual	Supporting	set	1
19	Equipment certificate, warranty card	Supporting	set	1

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