The self-developed national standard DC charging pile training bench, through a transparent plane display, presents the actual charging pile control system on the training panel, which corresponds to the circuit schematic diagram, and highlight the connection control relationship between the core components of the DC charging pile. It can carry out cognitive teaching of plug-in electric vehicle charging system structure, and teaching of common fault detection and diagnosis of charging system. The test bench system integrates the charging pile characteristic test function, which can measure the output voltage, current, power of the charger, and the electric energy of the charger. The charging pile is equipped with matching vehicle-end protocol communication, which can output any voltage of 10-100V. The vehicle-end protocol module is equipped with a 7-inch touch screen, which directly displays the current charging data. And it can configure and set voltage parameters, current parameters, maximum allowable voltage, load control, charging mode selection, charging time and SOC value settings, BMS parameters, charger parameters, etc. The teaching panel adopts an integrated design, which is simple and elegant. The overall structure adopts a combination of iron and sheet metal, which is durable, safe and reliable. The base of the teaching board is equipped with a 30cm wide desktop, which is convenient for placing materials, light testing instruments, etc. Equipped with self-locking casters for flexible movement. It can train the students' ability to develop and test, function test and after-sales maintenance of DC charging piles, which is suitable for the teaching needs of DC charging piles in secondary and senior vocational skill schools, undergraduate colleges and training institutions.
ii. Features
1. The training bench is based on the national standard DC charging pile, and planarize the DC charging interface, DC charging harness, high-voltage battery pack, control main board, electric energy meter, contactor and other system circuits. The key signals can be measured, and the key components and circuits can be set with faults, so that the students can truly understand the control process of the DC charging system, that is, how to wake up the system, how to control the relay, and how to monitor the charging process.
2. The working status of the training bench can be judged by the color of the indicator light: Normal idle: green, On failure: red, When the gun is ready: blue breathing light, When communicating with an on-board charger: color, When normal charging: light blue flowing water light.
3. The training bench is equipped with the circuit schematic panel of the charging pile terminal and the vehicle control terminal. The students can intuitively compare the circuit diagram and the real object to understand and analyze the working process and control strategy. At the same time, the system can perform fault settings.
4. The bench is equipped with an emergency stop switch, which can stop the operation of the equipment with one key in an emergency.
5. Arrange light-emitting diode strips in the protective layer of the high-voltage wiring harness. When there is current in the wiring harness, the LED strips can be used to display the direction of the DC charging current.
6. The system is equipped with a touch all-in-one device of windows system not less than 23.6 inches. And it has built-in human-computer interaction software of national standard charging system, which can display charging voltage, current, consumption amount of electricity and fault code of charging pile in real time.
7. Charging information interface: Detailed display of charging system charging status, charging current, gun head temperature, charging voltage, CC1 voltage, insulation detection, vehicle BMS information, charging time, charging power, consumption amount, fault code and other information.
8. Start charging interface: you can choose the modes of automatic charging, charging by power, charging by time, charging by amount, etc. At the same time, it has the function of vehicle 3D dynamic rotation.
9. End charging interface: use card swipe to end charging.
10. Fault query interface: the green and red status of the charging pile icon reflects the fault status of the charging pile, and the fault name is directly displayed in the fault state.
11. The human-computer interaction interface of the charging system has the functions of fault setting and data query. It can set the fault of CC1 circuit, electric meter communication circuit, indicator light communication circuit, card reader grounding circuit, pulse electronic lock elf circuit, charging gun s + circuit and other circuits in the charging system.
12. The main board of the charging system has CAN bus interface, meter communication interface, credit card billing communication interface, PC communication interface, insulation detection circuit interface, emergency stop detection interface, CC1 isolation measurement interface, gun seat temperature detection interface, gun lock control and detection interface, DC contactor control circuit interface, etc.
13. The training bench is equipped with a charging load device. The high-power aluminum shell resistance is used to simulate the load of the power battery pack for charging, and the normal charging process can be realized without connecting the charging pile to the vehicle. The simulated load aluminum shell resistance is not less than 2 pieces and the heat dissipation fan is used for heat dissipation, and the discharge current is 2a and 4A respectively.
14. Equipped with a vehicle-end signal communication module and a data display screen, which can display the charging stage status, demand voltage, demand current, maximum charging voltage, maximum charging current, and charging mode of the charging pile in real time, current power SOC value, output voltage, output current, output power, accumulated power, BMS parameter setting, charger parameter display and other functions.
15. Equipped with Android + Windows dual-mode fault setting system. The system is based on Android (Android) system and wireless network (WIFI), and the intelligent fault setting and assessment system is designed to be compatible with any Android (Android) system smartphon. The APP software running on the mobile phone or PC uses the WIFI networking function of the mobile phone or PC to conduct wireless communication with the training bench or teaching board equipped with the remote fault setting control system module. There are no less than 10 fault points.
16. Supporting built-in new energy vehicle charging system teaching resource package software V1.0, the functions are as follows:
16.1. The explanation is based on the national standard DC charging pile. Through 3D animation model and circuit principle, explain the DC charging principle of electric vehicle in multiple directions, and show all parts clearly. When learning through an independent system, separate modules are called out for learning, which is clear and intuitive.
16.2. The main contents of the teaching resource package include: port definition, charging circuit diagram, charging sequence, vehicle connection, charging confirmation, charging process, stop charging and after-school exercises and other knowledge content detailed analysis.
16.3. Each knowledge system includes knowledge principles, structure display, and circuit demonstration. The circuit demonstration is displayed through interactive animation, and the circuit trend is dynamically demonstrated. A complete circuit diagram is decomposed into multiple circuit diagrams, and the working circuit is learned in sections to improve Students are interested, strong in operability, detailed in content and smooth in presentation.
16.4. Each module starts with questions and learns with questions. For each component, understand its structure and learn its principles, and finally consolidate the knowledge through after-class exercises. After-class exercises have the function of correct judgment and analysis, and teaching. And the resource package and the company's equipment learning can enhance the understanding of knowledge through practical operation.
17. The training bench is equipped with 4 3-inch silent self-locking casters, so the equipment can move lightly and flexibly.
iii. Basic Parameter
1. Equipment dimensions (mm): not less than 1600*700*1760 (length*width*height)
Table height (mm): not less than 660
Dimensions of the teaching panel frame (mm): not less than 1600*1000*160 (length*width*thickness)
2. Input power supply: AC220V±10% 50Hz
3. Working power supply: DC12V/100V
iv. Basic Configuration
1 leakage protector, 2 AC contactors, 1 set of charging load simulator, 1 set of AC/DC power control system, 1 set of national standard DC charging gun, 1 national standard car-end charging stand, 1 emergency stop switch, 1 credit card module, 2 switching power supplies, 2 aluminum shell load resistance, 1 shunt, 2 electric energy meters, 1 DC charging pile main control module, 1 7-inch touch screen, 1 set of 23.6-inch touch all-in-one device, 1 set of charging pile teaching resource software, 1 set of LED light strip, USB distributor, 1 set of indicator light control module, 1 set of fault setting motherboard, 1 set of teaching panel diagram and new process underframe