A maintenance-free charging pile power supply lightning protector

Abstract

The invention relates to a maintenance-free charging pile power lightning arrester comprising a module shell and a housing pedestal. Electrode clamp heads are arranged at the left side and the right side of the module shell; and electrode clamp grooves are formed in the left side and the right side of the inner side of the housing pedestal and can be plugged with the electrode clamp heads tightly. A voltage-sensitive assembly, a graphite module and a circuit module are installed at the module shell. An inlet port, a remote communication port, a grounding port and a mounting clamp head are arranged at the housing pedestal; and the voltage-sensitive assembly is connected in parallel with the circuit module and is connected in series with the graphite module. According to the lightning arrester, on the basis of combination of the voltage-sensitive assembly and the graphite module, electric leakage of the lightning protection element can be prevented, the follow current during the discharging process of the lightning protection element can be avoided, and the lightning protection discharging effect can be improved. Therefore, leakage current and follow current can be avoided for the lightning arrester; and objectives of service life prolonging and maintenance-free effect realization can be achieved.

Description

technical field [0001] The invention relates to the field of lightning protection for charging pile power supplies, in particular to a maintenance-free lightning protector for charging pile power supplies. Background technique [0002] Charging pile is a power supply device specially used for charging electric vehicles. It is an emerging service industry. The input end of the charging pile is directly connected to the AC power grid. After power conversion, the output end is a DC power supply for charging electric vehicles; For gas stations serving automobiles, the charging piles are generally built outdoors in a covered space, so the power supply equipment is easily disturbed by induced lightning, so the AC power inlet of the charging pile is required to be equipped with a power surge protector, and It is required that the lightning arrester has the characteristics of reliable performance, low failure rate, not easy to fail and easy maintenance. However, the lightning prote...

AI Technical Summary

Problems solved by technology

However, the charging pile power supply surge protector that conventionally uses switch-type components has no leakage current and is not easy to age, but its response time is slow, and the voltage protection level of the graphite type is relatively high, and the gas type has defects such as freewheeling; and The surge protector for charging pile power supply using pressure sensitive components has a small leakage current and has the defect of aging after long-term use

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