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    當外電路接上負載后，在電動觀光車電(dian)(dian)(dian)池正(zheng)(zheng)\負(fu)極板(ban)之間的(de)(de)電(dian)(dian)(dian)位差的(de)(de)作用下(xia)，負(fu)極板(ban)的(de)(de)電(dian)(dian)(dian)子便(bian)經負(fu)載進入(ru)正(zheng)(zheng)極板(ban)形成(cheng)(cheng)電(dian)(dian)(dian)流(liu)。同時在電(dian)(dian)(dian)動觀光車電(dian)(dian)(dian)池內部(bu)產生化學反應,在負(fu)極板(ban)上(shang)每個鉛(qian)原(yuan)子放出兩個電(dian)(dian)(dian)子，變成(cheng)(cheng)鉛(qian)正(zheng)(zheng)離子，同時在負(fu)極上(shang)多余電(dian)(dian)(dian)子，這些電(dian)(dian)(dian)子在電(dian)(dian)(dian)動勢的(de)(de)作用下(xia)，將不斷地經外電(dian)(dian)(dian)路(lu)流(liu)入(ru)正(zheng)(zheng)極而形成(cheng)(cheng)電(dian)(dian)(dian)流(liu)。在電(dian)(dian)(dian)解液(ye)內部(bu),因硫酸分子的(de)(de)電(dian)(dian)(dian)離，便(bian)有氫正(zheng)(zheng)離子和酸根離子存在，便(bian)生成(cheng)(cheng)硫酸鉛(qian)分子附著在負(fu)極上(shang)。

在正(zheng)極(ji)板上，由于(yu)電(dian)子(zi)自外電(dian)路進入，便于(yu)四價的鉛正(zheng)離(li)子(zi)化合(he)變(bian)成(cheng)二(er)價鉛的正(zheng)離(li)子(zi)，并立即(ji)和正(zheng)極(ji)板附近的酸(suan)(suan)根負(fu)離(li)子(zi)結合(he)在一起，生(sheng)成(cheng)硫酸(suan)(suan)鉛分子(zi)附著(zhu)在正(zheng)極(ji)板上。與此同時，電(dian)解(jie)液中(zhong)移向正(zheng)極(ji)板的氫離(li)子(zi)和氧離(li)子(zi)結合(he)，生(sheng)成(cheng)水。