Electric leakage self-inspection system and working method thereof

Abstract

The invention relates to an electric leakage self-inspection system and a working method thereof. The electric leakage self-inspection system comprises a control unit, an electric leakage self-inspection enable device connected with a power supply line of a charging pile, and an electric leakage signal detection module electrically connected with the control unit, wherein the control unit sends astartup detection control signal to turn on the electric leakage self-inspection enable device; the power supply line of the electric leakage self-inspection enable device is conducted to obtain a power supply current of the charging pile; and the electric leakage signal detection module is suitable for detection of whether an electric leakage signal is generated in the power supply line or not, namely, when electric leakage is generated in the power supply line of the charging pile, the control unit outputs an execution instruction. The electric leakage self-inspection is carried out when thecharging pile is started, and when it is detected that an electric leakage hidden danger exists in the power supply line of the charging pile, the hidden danger is eliminated in time so as to avoid asafety accident.

Description

technical field [0001] The invention relates to the field of charging pile protection, in particular to a leakage self-inspection system and a working method thereof. Background technique [0002] At present, the AC charging piles of electric vehicles generally do not have the automatic leakage detection function when starting up, or use traditional leakage protectors; however, due to the large number of control circuits in the charging piles, the power-on start-up time of the processor module in the general control circuit is about 50ms. But the leakage occurs immediately after power on. [0003] Therefore, when the control circuit starts, the leakage phenomenon may have already occurred, and the response time of the traditional leakage protector is much longer than 50ms, and the trigger condition is relatively high. It is not suitable to use traditional leakage protectors. [0004] Therefore, in order to detect the leakage in time before the control circuit board is star...

AI Technical Summary

Problems solved by technology

[0002] At present, the AC charging piles of electric vehicles generally do not have the automatic leakage detection function when starting up, or use traditional leakage protectors; however, due to the large number of control circuits in the charging piles, the power-on start-up time of the processor module in the general control circuit is about 50ms. But the leakage occurs immediately after power on

[0003] Therefore, when the control circuit starts, the leakage phenomenon may have already occurred, and the response time of the traditional leakage protector is much longer than 50ms, and the trigger condition is relatively high. It is not suitable to use traditional leakage protectors

Images