太陽能手機鋰離子電池充電器的研究

摘要：本文討論了目前的手機鋰電池充電器不適合于使用太陽能電池供電的原因，設計了一個應用BUCK變換器拓撲的太陽能鋰電池充電器，其充電控制方法充分考慮了光照強度、環境溫度等外界因素的影響。為提高充電速度，采用最大功率點跟蹤策略（MPPT），MPPT與充電過程控制由單片機來實現。 敘詞：太陽能；最大功率點跟蹤；鋰離子電池；充電控制方法；BUCK變換器 Abstract：This paper discusses the reasons that why the existing li-ion battery chargers for cell phones are inapplicable with solar power. So this paper presents a solar charger for Li-ion battery that uses a buck converter topology and a charge control algorithm which considered environmental factors such as illumination and temperature. The Maximum Power Point Tracking (MPPT) technique is used in the charger to increase the charge speed. A micro-controller regulates the charging process and implements the MPPT. Keyword：Solar power; Maximum Power Point Tracking ; Li-ion battery ; Charge control algorithm; BUCK converter