本論文提出一具電池修復功能之同步整流充電器,其中採用數位訊號處理器實現所研擬之充電與修復法則。由於鉛酸電池在使用一段時間之後,極板上會產生硫化物進而影響鉛酸電池的蓄電量,而在各界的研究中,已證實負電流充電對鉛酸電池具有蓄電量修復功能。所以本論文研製一具有弦波與負脈衝波形充電器,可將極板硫化物打散,以提升鉛酸電池蓄電量。 本論文採用德州儀器出產之DSP 28035為控制平台,藉以實現全數位化控制之直流/直流電路架構。本論文所提之充電法則為充電階段採用弦波波形,而放電修復階段則採用負脈衝波形,並在兩階段之間各設置一段休息時間,藉由正弦波以及負脈衝打散鉛酸電池極板上所累積的硫化物,以達到修復鉛酸電池的效果。 本論文實際實做一同步整流降壓型轉換器,充當充電器之功率級電路,並將所提充電策略以軟體實現於DSP中,分別以五顆電池進行測試,可得知以所提之弦波與負脈衝充電法可提升電池蓄電量。
This study proposes a novel charging strategy to solve the plate deposition and repair the lead-acid battery capacity, the differences before and after battery repair is also compared in this thesis. Some sulfides will deposit on the plates of lead-acid batteries for a used period. The sulfides will attenuate the capacity of lead-acid battery. This thesis presents a charger with sine wave charging method to solve plate deposition, and upgrade the lead-acid battery capacity. This thesis uses TI DSP28035 as the PWM controller to implement the proposed charging method and recover the lead-acid battery capacity while charging. A buck converter with synchronous rectification is used to realize the proposed charging method in which the negative pulse waveform is also introduced to solve other plate depositions of lead-acid battery. This thesis provides tests of five lead-acid batteries to verify the proposed charging method and the experimental results connect the feasibility and functions.