The reliability of the USA Standard AC EV Charger in severe weather conditions is an important issue of great concern.
From a temperature perspective, the electronic components inside the charger face severe challenges at extremely high temperatures. Prolonged high temperatures may cause the performance of semiconductor devices to degrade and the overheating protection mechanism to frequently activate, thus affecting the continuity and stability of charging. In addition, high temperature will accelerate the aging of the cable insulation layer, reduce its insulation performance, and increase the risk of short circuit. At the same time, the heat dissipation system inside the charger may not be able to effectively cope with high temperatures, causing the internal temperature to be too high, triggering the fault protection and interrupting charging.
In extreme low-temperature environments, the charger's performance is also unsatisfactory. Low temperature will significantly reduce the activity of the battery, significantly slowing down the charging speed. The charger may fail to reach the preset charging state for an extended period of time, display an error, or stop working. Moreover, low temperature will make some mechanical parts and plastic materials brittle, affecting the structural stability and service life of the charger. For example, the plug's insertion and extraction mechanism may become stiff and easily damaged.
In terms of humidity, under high humidity and high temperature weather conditions, the circuit board inside the charger is extremely susceptible to corrosion. Metal parts are prone to rust, causing short circuits or poor contacts in the circuit. Water vapor may also break through the waterproof seal of the charger, invade the interior, and damage sensitive electronic components. Dirt will also form at the interface due to the mixture of water vapor and dust, affecting the reliability and conductivity of the connection. In a long-term humid and cold environment, the growth of mold will cause continuous damage to the circuit and insulation layer inside the charger, reducing its reliability.
Under the influence of mechanical impacts such as wind and rain, violent storms may cause direct physical damage to the charger. If the installation is not secure, the charger may be blown by strong winds or even fall, causing serious damage. The high-speed impact of rainwater and mixed foreign matter will wear the shell of the charger and destroy its protective capabilities. Once rainwater penetrates into vents, heat dissipation vents, etc., the internal circuit will be damaged instantly, causing the charger to not work properly.
As for the issue of lightning strikes, although there are usually lightning protection facilities in the charging pile installation area, the occurrence of induced lightning and other situations cannot be completely ruled out. The high voltage generated by a lightning strike may instantly damage the electronic components inside the charger, and the powerful electromagnetic pulse may also interfere with the charger's control system, causing program confusion and malfunction.
Generally speaking, the USA Standard AC EV Charger will take a series of measures to improve its reliability under severe weather conditions when designing and manufacturing it, such as improving the protection level of the casing and sealing the internal circuits. However, in practical applications, due to the complexity and diversity of various severe weather conditions, as well as the aging and inadequate maintenance of some chargers, there is still a certain degree of uncertainty and uncertainty in their reliability in use in severe weather. risk.
