As the necessary equipment for charging new energy electric vehicles, the charging pile is equivalent to a gas station for traditional fuel bicycles. Like a gas machine, each charging pile is equipped with a charging plug for users to choose and use. Level to charge your own electric car. So how does the process of charging an electric car work? First, the charging pile tests whether the charging line has voltage and determines the battery status, and then the control center sends an instruction to charge the battery through the CAN bus to start the charging output. If no voltage is detected on the charging bribe, the charging pile will issue a fault alarm and stop working, and the charging pile must be restarted before it can continue to be used.

As a charging pile for electric vehicles, its safety is very important, so it is very important to test the load of the charging pile. At present, some charging pile manufacturers use the actual or environmental test method, that is, use a charging pile as a supporting method. The battery is charged and then tested, but this practical test method also has the following disadvantages:

1. In actual charging, it is impossible to test the real-time judgment of the working conditions of the charging pile during the whole process;

2. This method cannot accurately test the output of the charging pile;

3. The acquisition of test results is also inaccurate and inconvenient;

4. The efficiency of the actual test is low and the rapid repeatability test cannot be performed;

The charging pile test load system can quickly, accurately and conveniently test the charging pile. The specific charging pile test load process is as follows:

1. Connect the charging pile test load to the charging pile, the electronic load and the charging start trigger in parallel, and set the charging trigger to set the voltage limit value to the charging voltage value of the charging pile. After the load is stabilized, the load is equivalent to a stable voltage source, and it can also absorb any current within the rated range. Afterwards, a start signal is sent through the CAN bus of the control system to start the charging pile.

2. If the startup is successful, the load power of the electronic load will increase, and the output voltage, current and power of the charging pile can be directly observed on the control panel. If the charging start fails, the load power of the electronic load remains unchanged, and the data displayed on the control panel is also zero. In the process of testing the charging pile by the recharging pile test load, different charging modes can be used to comprehensively test the performance of the charging pile. Real-time display and recording through the charging pile test load.