談到快速(su)充(chong)電(dian)許多人可能會先(xian)想到近兩年出現的(de)(de)(de)(de)手(shou)機快充(chong)技術，通過高電(dian)壓(ya)壓(ya)或者大(da)(da)電(dian)流，大(da)(da)幅提高手(shou)機的(de)(de)(de)(de)充(chong)電(dian)速(su)度，縮短充(chong)電(dian)時(shi)間。不過今天電(dian)源適配器廠(chang)家不談手(shou)機快充(chong)，而是想簡單的(de)(de)(de)(de)談一下蓄電(dian)池的(de)(de)(de)(de)快充(chong)原(yuan)理(li)。

雖然這兩年(nian)鋰(li)電(dian)(dian)(dian)開始逐漸(jian)普及，但是目前(qian)大部(bu)分電(dian)(dian)(dian)動車使用的還(huan)是鉛(qian)酸(suan)蓄(xu)電(dian)(dian)(dian)池(chi)(chi)。鉛(qian)酸(suan)蓄(xu)電(dian)(dian)(dian)池(chi)(chi)快速充(chong)電(dian)(dian)(dian)技術是在常規充(chong)電(dian)(dian)(dian)技術的基礎上發展起來的，不論(lun)采(cai)用何種充(chong)電(dian)(dian)(dian)制度進(jin)行充(chong)電(dian)(dian)(dian)，鉛(qian)酸(suan)蓄(xu)電(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)的成流(liu)過程(cheng)都要遵(zun)守雙(shuang)極(ji)硫酸(suan)鹽化理論(lun)，即其化學反應方程(cheng)式為：

按常規充(chong)(chong)電(dian)(dian)法，充(chong)(chong)電(dian)(dian)電(dian)(dian)流安培數，不(bu)應(ying)超過蓄電(dian)(dian)池待充(chong)(chong)電(dian)(dian)的安時(shi)(shi)數。這樣，才可保證在整(zheng)個充(chong)(chong)電(dian)(dian)過程中，產生氣體和溫(wen)升的狀況符合要(yao)求。因此(ci)，常規的蓄電(dian)(dian)池其充(chong)(chong)電(dian)(dian)方(fang)法都采用小(xiao)電(dian)(dian)流的恒壓(ya)或(huo)恒流充(chong)(chong)電(dian)(dian)，充(chong)(chong)電(dian)(dian)時(shi)(shi)間(jian)長達10至20多個小(xiao)時(shi)(shi)，給實(shi)際使用帶來許多的不(bu)便。為了縮短(duan)電(dian)(dian)池的充(chong)(chong)電(dian)(dian)時(shi)(shi)間(jian)，國內(nei)外(wai)一直(zhi)都在不(bu)斷地研究和開發快速充(chong)(chong)電(dian)(dian)方(fang)法和技術。

蓄(xu)電(dian)(dian)池充電(dian)(dian)接受能力隨(sui)放電(dian)(dian)深度而(er)變化(hua)。如(ru)果以相同大小的(de)電(dian)(dian)流放電(dian)(dian)，則(ze)，放出電(dian)(dian)量(liang)越多(duo)，充電(dian)(dian)接受率α越高，充電(dian)(dian)接受電(dian)(dian)流越大。即(ji)有如(ru)下關系：

I0——開始充電(dian)時的最(zui)大初始電(dian)流(liu)值。

C——放(fang)電容量。

K——常數(shu)，可(ke)由(you)實驗求出(chu)。

（2）對于任何(he)給定的(de)放電深度，充電接受(shou)率(lv)：

又因(yin)I0=αC，所以

Id——放電(dian)電(dian)流。

常數K和(he)k可由實驗得出。

上式表(biao)明，蓄電(dian)(dian)(dian)(dian)(dian)池的(de)充(chong)電(dian)(dian)(dian)(dian)(dian)接受(shou)率取決于它的(de)放電(dian)(dian)(dian)(dian)(dian)歷史(shi)，以小電(dian)(dian)(dian)(dian)(dian)流(liu)長時(shi)(shi)間放電(dian)(dian)(dian)(dian)(dian)的(de)蓄電(dian)(dian)(dian)(dian)(dian)池，充(chong)電(dian)(dian)(dian)(dian)(dian)接受(shou)率低(di)，相反，以大電(dian)(dian)(dian)(dian)(dian)流(liu)短時(shi)(shi)間放電(dian)(dian)(dian)(dian)(dian)的(de)蓄電(dian)(dian)(dian)(dian)(dian)池，充(chong)電(dian)(dian)(dian)(dian)(dian)接受(shou)率高(gao)。我們(men)對充(chong)電(dian)(dian)(dian)(dian)(dian)過程中(zhong)的(de)充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)進行實時(shi)(shi)控制，即用大電(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)，并在充(chong)電(dian)(dian)(dian)(dian)(dian)過程中(zhong)，短暫地停止充(chong)電(dian)(dian)(dian)(dian)(dian)，在停充(chong)期間加入放電(dian)(dian)(dian)(dian)(dian)脈沖(chong)，打破蓄電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)指數曲線自然接受(shou)特性的(de)限(xian)制。

飛天鷹電源適配器廠(chang)家生產各類(lei)小家(jia)電(dian)(dian)充電(dian)(dian)器(qi)、礦機電(dian)(dian)源(yuan)、平衡車充電(dian)(dian)器(qi)、USB充電(dian)(dian)器(qi)、QC3.0與Type-c PD快充充電(dian)(dian)器(qi)。規格多種(zhong)，認(ren)證(zheng)電(dian)(dian)源(yuan)，歡迎前(qian)來咨(zi)詢。