電(dian)(dian)(dian)(dian)動叉車的蓄(xu)電(dian)(dian)(dian)(dian)池(chi)放(fang)電(dian)(dian)(dian)(dian)至端電(dian)(dian)(dian)(dian)壓后(hou)，繼續放(fang)電(dian)(dian)(dian)(dian)稱(cheng)為(wei)過(guo)放(fang)電(dian)(dian)(dian)(dian)。過(guo)放(fang)電(dian)(dian)(dian)(dian)會嚴重(zhong)損壞電(dian)(dian)(dian)(dian)動叉車電(dian)(dian)(dian)(dian)池(chi)，對杭州(zhou)叉車電(dian)(dian)(dian)(dian)池(chi)的電(dian)(dian)(dian)(dian)氣性能和循環壽命極為(wei)不利(li)。

電(dian)動(dong)叉(cha)車的蓄電(dian)池放(fang)電(dian)到(dao)終止電(dian)壓時(shi)，內(nei)阻大(da)，電(dian)解液濃度(du)很稀，特別是(shi)電(dian)極板孔(kong)和表(biao)面幾乎(hu)呈(cheng)中性。過放(fang)電(dian)時(shi)，內(nei)阻趨(qu)于發(fa)熱(re)，體(ti)積膨脹(zhang)，放(fang)電(dian)電(dian)流大(da)時(shi)明顯發(fa)熱(re)(甚(shen)至產生熱(re)變形)。此時(shi)硫酸鉛濃度(du)特別大(da)，存活晶體(ti)短路的可能(neng)性增(zeng)加。而且此時(shi)硫酸鉛會結晶成較(jiao)大(da)的顆粒，即不可逆(ni)的硫酸鹽(yan)化會進一步增(zeng)加內(nei)阻，電(dian)荷回(hui)收能(neng)力差。

電(dian)(dian)(dian)(dian)動叉(cha)車(che)的(de)(de)蓄電(dian)(dian)(dian)(dian)池應防止過(guo)度放(fang)電(dian)(dian)(dian)(dian)，“欠(qian)壓(ya)保護”是一(yi)種非常有(you)效的(de)(de)措施。此外，由(you)于(yu)電(dian)(dian)(dian)(dian)動汽車(che)的(de)(de)“欠(qian)壓(ya)保護”是由(you)控(kong)(kong)制(zhi)器控(kong)(kong)制(zhi)的(de)(de)，所以(yi)控(kong)(kong)制(zhi)器之外的(de)(de)其他(ta)耗電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)器，如電(dian)(dian)(dian)(dian)壓(ya)表、指示燈等，都是由(you)電(dian)(dian)(dian)(dian)池直接(jie)供電(dian)(dian)(dian)(dian)的(de)(de)，其供電(dian)(dian)(dian)(dian)一(yi)般不(bu)受控(kong)(kong)制(zhi)器控(kong)(kong)制(zhi)。電(dian)(dian)(dian)(dian)動叉(cha)車(che)的(de)(de)鎖(開(kai)關(guan))一(yi)旦(dan)合上(shang)，就開(kai)始用電(dian)(dian)(dian)(dian)。雖然電(dian)(dian)(dian)(dian)流小，但如果(guo)長時(shi)間(1-2周)放(fang)電(dian)(dian)(dian)(dian)，就會出現過(guo)放(fang)電(dian)(dian)(dian)(dian)。所以(yi)鎖不(bu)要(yao)長時(shi)間開(kai)鎖，不(bu)用的(de)(de)時(shi)候(hou)要(yao)馬上(shang)關(guan)掉。

采(cai)用(yong)交流驅(qu)動(dong)系統的(de)電動(dong)叉車整體性能顯著(zhu)提高，故障率(lv)和(he)部(bu)件(jian)更換率(lv)顯著(zhu)降(jiang)低(di)，可靠(kao)性大(da)大(da)增強(qiang)。電動(dong)叉車單位(wei)時(shi)間(jian)生(sheng)產率(lv)更高，運營(ying)維護成本更低(di)，會給(gei)用(yong)戶帶(dai)來顯著(zhu)的(de)效(xiao)益。

因此，交(jiao)流驅動(dong)系統(tong)一經推出，不僅(jin)受到叉車廠家(jia)的(de)信賴，也(ye)越來越受到用(yong)戶的(de)青(qing)睞(lai)，成(cheng)為近年(nian)來電(dian)動(dong)叉車技術發展的(de)趨勢和方(fang)向。其優(you)勢主要體現在以下幾個方(fang)面：運(yun)維成(cheng)本(ben)低，電(dian)動(dong)叉車交(jiao)流電(dian)機終身免維護。