The AC/DC charging intelligent training platform must be equipped with national standard AC and DC charging modules, capable of AC or DC charging the training platform or system.

Functional Requirements
1. The training platform must be equipped with a national standard 7kW AC charging module, including: a charging card reader module, a billing module, and a control module, arranged horizontally, visually demonstrating the internal structure of the AC charging equipment.

2. The AC charging module is equipped with a national standard AC charging port, allowing charging of the training platform's built-in discharge load via a simulated on-board charger, visually demonstrating the AC charging process. It can also charge the system or interconnected training platforms.

3. The training platform is equipped with a national standard 7kW DC charging module, capable of DC charging the system.

4. The training platform can perform common fault setting and troubleshooting for both AC and DC charging circuits, such as: poor communication between AC and DC meters, overheating of AC and DC charging guns, and overvoltage input to the AC charger.

5. To ensure convenience and intuitiveness in actual teaching, the training platform must include both DC charging and AC charging sections. The DC charging section should have the following basic modules: DC charging card reader, DC charging inverter module, simulated on-board charger module, switching power supply module, RS-485 communication module, and a 7-inch display screen. The modules should be logically arranged and clearly displayed, with each module clearly labeled.

The AC charging section should have the following basic modules: AC charging card reader, main control module, over-temperature detection module, 7-inch display screen, indicator lights, power switch, emergency stop switch, DC charging gun, and fan. The modules should also be logically arranged and clearly displayed, with each module clearly labeled.

Teaching Objectives
1. To be able to determine the power of a charging pile based on its nameplate or charging nozzle.
2. To be able to master the internal structure of an AC charging pile and the connection status of its components.
3. To be able to master the internal structure of a DC charging pile and the connection status of its components.
4. To be able to master the working principles of each component inside an AC charging pile and the functions of each module.
5. To master the working and control principles of an AC charging pile.
6. To master the working and control principles of a DC charging pile.
7. To be able to analyze common faults based on changes in various data streams of the charging pile.
8. Fault diagnosis and analysis of AC charger input overvoltage and undervoltage.
9. Fault diagnosis and analysis of AC charger output overvoltage and undervoltage.
10. Fault diagnosis and analysis of AC meter communication failure.
11. Fault diagnosis and analysis of DC meter communication failure.
12. Fault diagnosis and analysis of AC/DC contactor communication failure.
13. Fault diagnosis and analysis of AC/DC emergency control communication failure.
14. Fault diagnosis of AC/DC charging overheating.