在简单的(de)(de)太(tai)阳(yang)电(dian)(dian)(dian)池(chi)，蓄(xu)电(dian)(dian)(dian)池(chi)系(xi)统中(zhong)，控制器(qi)的(de)(de)作用(yong)(yong)是保护蓄(xu)电(dian)(dian)(dian)池(chi)，避(bi)免过(guo)充，过(guo)放。若光伏电(dian)(dian)(dian)站并网供(gong)电(dian)(dian)(dian)，控制器(qi)则需(xu)要有(you)自(zi)动监测、控制、调节(jie)、转换(huan)等多种功能(neng)。如(ru)果负(fu)载用(yong)(yong)的(de)(de)是交流电(dian)(dian)(dian)，则在负(fu)载和蓄(xu)电(dian)(dian)(dian)池(chi)间还应配备逆变器(qi)，逆变器(qi)的(de)(de)作用(yong)(yong)就是将方阵和蓄(xu)电(dian)(dian)(dian)池(chi)提(ti)供(gong)的(de)(de)低压直流电(dian)(dian)(dian)逆变成220伏交流电(dian)(dian)(dian)，供(gong)给负(fu)载使用(yong)(yong)。