現在大多數的電動剃須刀使用的電池是鎳氫電池，而鋰電(dian)池作為(wei)當前電(dian)池的(de)熱門“寵(chong)兒”，為(wei)什么不用呢？相信很多朋(peng)友對這個問題(ti)應該(gai)都(dou)想知道(dao)答案吧。下(xia)面我們就來簡說一(yi)下(xia)原因吧。

1、成本問題

剃須刀中用的(de)(de)鎳氫電(dian)(dian)(dian)池(chi)(chi)(chi)是(shi)(shi)經過(guo)十多(duo)年生(sheng)產，已經很(hen)成熟的(de)(de)鎳氫電(dian)(dian)(dian)池(chi)(chi)(chi)，經過(guo)長時(shi)間的(de)(de)生(sheng)產，現在已經可以做到(dao)比較(jiao)低的(de)(de)成本了(le)。鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)雖然便宜，但是(shi)(shi)還是(shi)(shi)比鎳氫電(dian)(dian)(dian)池(chi)(chi)(chi)貴(gui)。剃須刀上(shang)(shang)重要(yao)的(de)(de)部件有電(dian)(dian)(dian)機(ji)和(he)(he)刀頭，其(qi)中電(dian)(dian)(dian)機(ji)對于電(dian)(dian)(dian)流比較(jiao)敏感，鋰(li)電(dian)(dian)(dian)和(he)(he)鎳氫，鎳鎘(ge)各自的(de)(de)電(dian)(dian)(dian)壓，放電(dian)(dian)(dian)特性都(dou)是(shi)(shi)不一樣的(de)(de)。你(ni)生(sheng)產的(de)(de)時(shi)候，舊款的(de)(de)電(dian)(dian)(dian)機(ji)或(huo)者是(shi)(shi)有了(le)成熟的(de)(de)生(sheng)產線，或(huo)者是(shi)(shi)有充(chong)足(zu)的(de)(de)供應(ying)商，比較(jiao)便宜。如(ru)果換新(xin)電(dian)(dian)(dian)池(chi)(chi)(chi)，就要(yao)換新(xin)電(dian)(dian)(dian)機(ji)，然而這(zhe)個新(xin)電(dian)(dian)(dian)機(ji)不管是(shi)(shi)你(ni)自己設計生(sheng)產還是(shi)(shi)去買，都(dou)應(ying)該是(shi)(shi)比原來的(de)(de)電(dian)(dian)(dian)機(ji)貴(gui)不少的(de)(de)，所以成本就跟著上(shang)(shang)升很(hen)多(duo)。

現在(zai)電(dian)(dian)動(dong)(dong)剃須刀市(shi)場(chang)競(jing)爭是非常激(ji)烈的(de)，商家為了控制成本，獲得(de)更(geng)大的(de)競(jing)爭優(you)勢，在(zai)選擇(ze)電(dian)(dian)池(chi)的(de)時候，自然是在(zai)能滿足(zu)動(dong)(dong)力(li)的(de)情(qing)況下(xia)，優(you)先選擇(ze)價格(ge)成本低的(de)電(dian)(dian)池(chi)了。而(er)鋰電(dian)(dian)池(chi)和鎳(nie)氫(qing)電(dian)(dian)池(chi)如果都是在(zai)同等尺寸和規模數量批發生產的(de)話，鎳(nie)氫(qing)電(dian)(dian)池(chi)成本要(yao)比鋰電(dian)(dian)池(chi)更(geng)低。

而且電(dian)動(dong)牙刷在續(xu)航(hang)、電(dian)流(liu)大小方(fang)面要求并不是(shi)很高(gao)，鎳氫電(dian)池完全能夠滿足。

2.其他問題

手機等電(dian)(dian)(dian)(dian)(dian)(dian)子設備需(xu)(xu)要(yao)做(zuo)的(de)(de)(de)輕薄，電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)能反復充電(dian)(dian)(dian)(dian)(dian)(dian)，快速充電(dian)(dian)(dian)(dian)(dian)(dian)，長(chang)(chang)時(shi)(shi)間穩定電(dian)(dian)(dian)(dian)(dian)(dian)壓，低自放電(dian)(dian)(dian)(dian)(dian)(dian)，這(zhe)(zhe)些都是電(dian)(dian)(dian)(dian)(dian)(dian)子器件需(xu)(xu)要(yao)的(de)(de)(de)放電(dian)(dian)(dian)(dian)(dian)(dian)特性(xing)。這(zhe)(zhe)些特性(xing)鎳氫電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)有(you)一些做(zuo)不(bu)到，有(you)一些做(zuo)到比(bi)較(jiao)(jiao)貴，所以(yi)這(zhe)(zhe)些電(dian)(dian)(dian)(dian)(dian)(dian)子產品上不(bu)適合(he)用鎳氫電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)，適合(he)使用鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)。剃(ti)(ti)須(xu)(xu)刀(dao)需(xu)(xu)要(yao)的(de)(de)(de)是短時(shi)(shi)間比(bi)較(jiao)(jiao)有(you)動力的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流，這(zhe)(zhe)個(ge)鎳鎘(ge)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)做(zuo)得(de)很(hen)好，不(bu)過(guo)鎘(ge)有(you)毒(du)，就(jiu)(jiu)不(bu)用了(le)。鎳氫電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)也能做(zuo)到。就(jiu)(jiu)不(bu)需(xu)(xu)要(yao)更貴的(de)(de)(de)鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)了(le)。而且(qie)在(zai)剃(ti)(ti)須(xu)(xu)刀(dao)這(zhe)(zhe)種產品中，電(dian)(dian)(dian)(dian)(dian)(dian)流比(bi)較(jiao)(jiao)大，容(rong)易熱，鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容(rong)易燃燒(shao)啊，爆炸啊，就(jiu)(jiu)是有(you)潛在(zai)危險，充電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)候也要(yao)防止過(guo)沖，放電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)候防止過(guo)放，所以(yi)用鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)還(huan)要(yao)為了(le)這(zhe)(zhe)些情況專門設計保護措施。鎳氫電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)就(jiu)(jiu)沒有(you)這(zhe)(zhe)些顧慮。還(huan)有(you)胡(hu)子10個(ge)小(xiao)時(shi)(shi)并不(bu)會長(chang)(chang)很(hen)長(chang)(chang)，慢慢沖電(dian)(dian)(dian)(dian)(dian)(dian)并不(bu)會讓(rang)消費者對產品不(bu)滿(man)意(yi)，1小(xiao)時(shi)(shi)急速充電(dian)(dian)(dian)(dian)(dian)(dian)并不(bu)是剃(ti)(ti)須(xu)(xu)刀(dao)很(hen)有(you)吸引力的(de)(de)(de)買點。

3、從安全角度上來說

鎳氫電池由于生產制造工藝性對鋰電池來(lai)說(shuo)更加成熟，而且能量(liang)密(mi)度低些（能量(liang)密(mi)度越高(gao)，化(hua)學物質越不穩(wen)定，越容易發生事(shi)故(gu)），化(hua)學物質相對穩(wen)定，所(suo)以安全性方面(mian)要比鋰電池(chi)更高(gao)些，畢竟電動牙刷使用時是(shi)很貼近面(mian)部的(de)，對產品安全要求就會比較高(gao)。