受太阳辐射强度、日照小时数及连续阴雨天数等自然气候条件的限制，需配备较大容量的蓄电池（环境温

度影响蓄电池寿命和充放电能力，有少量的维护工作），占地面积较大。Subject to the limitation of natural climate conditions such as solar radiation intensity, sunshine hours and continuous rainy days, the battery with larger capacity should be equipped (ambient temperature affects battery life and charging and discharging capacity, and there is a small amount of maintenance work), occupying a larger area.