太陽能手機(jī)鋰離子電池充電器的研究

摘要：本文討論了目前的手機(jī)鋰電池充電器不適合于使用太陽能電池供電的原因，設(shè)計了一個應(yīng)用BUCK變換器拓?fù)涞奶�陽能鋰電池充電器，其充電控制方法充分考慮了光照強(qiáng)度、環(huán)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(jī)來實現(xiàn)。 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