If an electric vehicle is charged at a shared electric vehicle charging station for the first time, since the battery of the electric vehicle has never been used before leaving the factory and has not gone through charging and discharging, to ensure the normal operation of the battery, generally speaking, charging for several hours is enough, just charge the battery to full capacity, and the charging time can be longer when charging the electric vehicle afterwards. Charging during the day makes it easier to control the charging time. After the battery has been used for a long time, it is recommended to perform a deep discharge on the battery once a month, then charge the electric vehicle battery after the deep discharge, and the charging time can be slightly longer than the usual charging time. This is of great benefit to the power capacity of the electric vehicle battery.