雖然(ran)早在 1999年(nian)《 GB17761-1999電(dian)動自(zi)行(xing)(xing)車(che)通(tong)用技術條件》對電(dian)動自(zi)行(xing)(xing)車(che)有(you)過(guo)名確的(de)(de)定(ding)義，也有(you)著詳盡的(de)(de)規范，然(ran)而實際(ji)的(de)(de)現狀是(shi)絕大多數電(dian)動自(zi)行(xing)(xing)車(che)突(tu)破了這(zhe)(zhe)(zhe)個(ge)(ge)限制(zhi)(zhi)，經過(guo) 10年(nian)演變成(cheng)了與這(zhe)(zhe)(zhe)個(ge)(ge)國家標準幾(ji)乎沒有(you)什么關系的(de)(de)另(ling)(ling)外一種(zhong)產品(pin)。在這(zhe)(zhe)(zhe)里，單從技術的(de)(de)角度，笨重的(de)(de)鉛(qian)酸電(dian)池，電(dian)動自(zi)行(xing)(xing)車(che)和電(dian)動摩托車(che)概(gai)念(nian)的(de)(de)混淆是(shi)這(zhe)(zhe)(zhe)個(ge)(ge)演變的(de)(de)最主要的(de)(de)罪(zui)魁(kui)禍首。然(ran)而在這(zhe)(zhe)(zhe)個(ge)(ge)演變的(de)(de)另(ling)(ling)外一個(ge)(ge)結果是(shi)，由(you)于鉛(qian)酸電(dian)池較短的(de)(de)壽命，由(you)于電(dian)動自(zi)行(xing)(xing)車(che)的(de)(de)粗(cu)制(zhi)(zhi)濫造(zao)，電(dian)動自(zi)行(xing)(xing)車(che)成(cheng)為一個(ge)(ge)沒有(you)任(ren)何安全，劣質短命產品(pin)代名詞。

    就在(zai)這個(ge)時(shi)候(hou)，用于電(dian)動(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)的(de)鋰電(dian)池日漸成(cheng)熟了，似(si)乎遲(chi)到了 10年。這個(ge)時(shi)候(hou)，普通(tong)的(de)消費者已(yi)經(jing)很難分清(qing)合格電(dian)動(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)和(he)電(dian)動(dong)(dong)(dong)摩托(tuo)車(che)(che)(che)(che)(che)(che)(含(han)電(dian)動(dong)(dong)(dong)摩托(tuo)車(che)(che)(che)(che)(che)(che)和(he)輕便電(dian)動(dong)(dong)(dong)摩托(tuo)車(che)(che)(che)(che)(che)(che))的(de)區別了；這個(ge)時(shi)候(hou)，超(chao)標的(de)電(dian)動(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)已(yi)經(jing)在(zai)中國市場飽和(he)了；這個(ge)時(shi)候(hou)，超(chao)標的(de)電(dian)動(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)消費者和(he)超(chao)標電(dian)動(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)生產企業已(yi)經(jing)敢于和(he)制定(ding)電(dian)動(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)標準(zhun)的(de)國家標準(zhun)化委員會(hui)叫板了。

    然而，然而鋰(li)電(dian)池(chi)必(bi)然和電(dian)動自(zi)(zi)行(xing)車有一個完(wan)美的(de)結合，這是由于(yu)鋰(li)電(dian)池(chi)獨有的(de)輕便和超(chao)長壽命的(de)本質(zhi)屬性決定的(de)，鋰(li)電(dian)池(chi)必(bi)然為電(dian)動自(zi)(zi)行(xing)車插上騰飛的(de)翅膀。

    在電動(dong)自行(xing)(xing)車(che)(che)行(xing)(xing)業(ye)已經迎來第(di)二次(ci)生命的今天，為了(le)能讓電動(dong)自行(xing)(xing)車(che)(che)行(xing)(xing)業(ye)有(you)一(yi)個(ge)健康(kang)的的發展，我們有(you)責(ze)任(ren)來思考和回答一(yi)些(xie)最(zui)基礎(chu)問(wen)題。當(dang)然這些(xie)問(wen)題都將圍(wei)繞著電動(dong)自行(xing)(xing)車(che)(che)的設計這個(ge)載體展開。 

    談到電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)車(che)(che)(che)的(de)(de)設(she)(she)計(ji)(ji)，我們首先要(yao)搞清(qing)一(yi)(yi)些(xie)基(ji)本(ben)的(de)(de)問(wen)題。什(shen)(shen)么(me)(me)是(shi)電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)？電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)的(de)(de)工業基(ji)礎(chu)是(shi)什(shen)(shen)么(me)(me)？什(shen)(shen)么(me)(me)是(shi)電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)的(de)(de)靈魂？電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)有三(san)種騎行(xing)(xing)狀態，即純人(ren)力(li)騎行(xing)(xing)，純電(dian)(dian)(dian)動(dong)(dong)騎行(xing)(xing)，電(dian)(dian)(dian)動(dong)(dong)力(li)和人(ren)力(li)騎行(xing)(xing)混合(he)(he)。三(san)者的(de)(de)關系是(shi)什(shen)(shen)么(me)(me)，電(dian)(dian)(dian)動(dong)(dong)力(li)和人(ren)力(li)騎行(xing)(xing)混合(he)(he)是(shi)一(yi)(yi)種什(shen)(shen)么(me)(me)樣(yang)的(de)(de)混合(he)(he)？什(shen)(shen)么(me)(me)是(shi)設(she)(she)計(ji)(ji)電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)的(de)(de)第(di)一(yi)(yi)要(yao)素(su)？電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)的(de)(de)設(she)(she)計(ji)(ji)要(yao)求有：安全，時(shi)尚美觀，舒適便(bian)捷，便(bian)于規模化生產，長期穩定性，維修便(bian)利等，在(zai)這些(xie)因素(su)中誰(shui)(shui)(shui)是(shi)最重要(yao)的(de)(de)，誰(shui)(shui)(shui)是(shi)次要(yao)的(de)(de)，誰(shui)(shui)(shui)是(shi)應當兼顧考慮的(de)(de)；它們之間(jian)又是(shi)一(yi)(yi)種什(shen)(shen)么(me)(me)樣(yang)的(de)(de)關系？電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)和電(dian)(dian)(dian)動(dong)(dong)摩托及自(zi)(zi)行(xing)(xing)車(che)(che)(che)的(de)(de)本(ben)質區別是(shi)什(shen)(shen)么(me)(me)？電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)車(che)(che)(che)的(de)(de)理想模型是(shi)什(shen)(shen)么(me)(me)樣(yang)的(de)(de)？

第一，什(shen)么事電動自行車？

     國標委員會《 GB17761-1999電(dian)動(dong)自(zi)行(xing)車通用技(ji)術條件》的(de)定義是：電(dian)動(dong)自(zi)行(xing)車是以蓄電(dian)池作(zuo)為輔(fu)助(zhu)能源(yuan)，具有兩個車輪，能夠實(shi)現(xian)人力(li)(li)騎行(xing)，電(dian)動(dong)或電(dian)動(dong)助(zhu)力(li)(li)騎行(xing)的(de)特種自(zi)行(xing)車。

從這個定義可已看出以下幾點： 
1、電動自行車是特種自行車，屬于自行車的一種； 
2、蓄電池為輔助能源； 
3、能夠實現人力騎行； 
4、能夠實現電動力或助(zhu)力騎(qi)行。

     這個解釋(shi)很好的(de)(de)回(hui)答了電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)是(shi)以蓄電(dian)(dian)(dian)池(chi)為輔助(zhu)能源，電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)是(shi)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)的(de)(de)一種(zhong)(zhong)，屬(shu)于(yu)特(te)(te)種(zhong)(zhong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)。但是(shi)沒(mei)(mei)有說明(ming)人力騎行(xing)(xing)(xing)(xing)，電(dian)(dian)(dian)動(dong)(dong)或助(zhu)力騎行(xing)(xing)(xing)(xing)三者的(de)(de)辯(bian)證關系，沒(mei)(mei)有很好的(de)(de)回(hui)答電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)與自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)和輕便電(dian)(dian)(dian)動(dong)(dong)摩(mo)托的(de)(de)區(qu)別的(de)(de)本質屬(shu)性(xing)是(shi)什么。我覺得這樣解釋(shi)更能說明(ming)電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)的(de)(de)本質屬(shu)性(xing)即：電(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)是(shi)一種(zhong)(zhong)在(zai)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)的(de)(de)基礎(chu)上融入電(dian)(dian)(dian)動(dong)(dong)功(gong)能，并且能夠實現人力和電(dian)(dian)(dian)動(dong)(dong)力有機協同工(gong)作的(de)(de)一種(zhong)(zhong)輕便特(te)(te)種(zhong)(zhong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)(che)(che)。

第二，電動自行車的工業基礎是什么？
    既然電(dian)(dian)動(dong)(dong)自(zi)行車是自(zi)行車的(de)一種，是一種特(te)殊的(de)自(zi)行車，那么電(dian)(dian)動(dong)(dong)自(zi)行車的(de)工業(ye)基礎就(jiu)是自(zi)行車。電(dian)(dian)動(dong)(dong)自(zi)行車其他部件(jian)的(de)和(he)系統的(de)設計都應該圍繞這個(ge)工業(ye)基礎展開。偏(pian)離了這個(ge)基礎，就(jiu)會(hui)搞(gao)出一些四不象的(de)怪(guai)胎(tai)。像摩托一樣超標(biao)電(dian)(dian)動(dong)(dong)車就(jiu)是一個(ge)典型(xing)的(de)例子。

第三，什么是電動自行車的靈魂？
     電(dian)動(dong)自(zi)行(xing)車有三種騎(qi)(qi)行(xing)狀態(tai)，即純人力騎(qi)(qi)行(xing)，純電(dian)動(dong)騎(qi)(qi)行(xing)，電(dian)動(dong)助(zhu)力。

     三者的(de)(de)關系是(shi)什么，電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)力和人(ren)力騎(qi)(qi)行(xing)混(hun)合(he)是(shi)一種(zhong)什么樣的(de)(de)混(hun)合(he)？純(chun)人(ren)力踩踏騎(qi)(qi)行(xing)是(shi)基(ji)礎，電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)不可(ke)避免的(de)(de)會出(chu)現路上電(dian)(dian)(dian)(dian)量用盡的(de)(de)時候，如果沒有人(ren)力騎(qi)(qi)行(xing)功(gong)能(neng)拋(pao)錨在路上是(shi)一件非常(chang)討厭的(de)(de)事情，同(tong)時沒有騎(qi)(qi)行(xing)功(gong)能(neng)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)兩輪車(che)(che)(che)(che)也(ye)不能(neng)成為電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)。但(dan)是(shi)現在的(de)(de)問題是(shi)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)自(zi)(zi)(zi)從有了電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)功(gong)能(neng)之后，騎(qi)(qi)行(xing)功(gong)能(neng)被忽視，不少電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)純(chun)人(ren)力騎(qi)(qi)行(xing)費(fei)(fei)力。實(shi)際上，如果電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)的(de)(de)腳踏功(gong)能(neng)越費(fei)(fei)力，則說明電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)的(de)(de)阻力越大，電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)的(de)(de)阻力越大，則同(tong)樣的(de)(de)電(dian)(dian)(dian)(dian)池容量電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)(zi)行(xing)車(che)(che)(che)(che)的(de)(de)續行(xing)距離越近。

     在 2003年，一輛 36V12AH的鉛酸電池 24寸輻條輪電動自行車一次充電可以跑到 55公里，可惜現在這種產品已經買不到了，而市場上現在流行款式，一輛 48V12AH的鉛酸電池 16寸一體輪電動自行車的續行距離為 58公里。不知道這是否是一種電動自行車產品技術的進步？電動自行車的阻力是有前軸、后軸、中軸以及輪胎和地面的阻力等等構成的，降低電動自行車的阻力應當：
1減少前軸，中軸，后軸的阻力；
2選用阻力較小的輪胎， 增大車輪的直徑；
3改善整車(che)結構，降低(di)空(kong)氣的動態阻力(li)； 4降低(di)整車(che)重量(liang)。

    只有(you)降低了(le)電(dian)動(dong)(dong)自(zi)行車的(de)(de)(de)阻(zu)力(li)(li)，電(dian)動(dong)(dong)自(zi)行車才(cai)(cai)有(you)可能有(you)良好(hao)的(de)(de)(de)騎行能力(li)(li)，才(cai)(cai)能為(wei)電(dian)動(dong)(dong)自(zi)行車的(de)(de)(de)純(chun)電(dian)動(dong)(dong)及電(dian)動(dong)(dong)助(zhu)力(li)(li)騎行打下良好(hao)的(de)(de)(de)基礎。

    純電(dian)(dian)動騎(qi)行(xing)，毫無(wu)疑問純電(dian)(dian)動騎(qi)行(xing)是不用消(xiao)耗騎(qi)行(xing)者的(de)(de)體力的(de)(de)，當然(ran)在三中(zhong)騎(qi)行(xing)狀態中(zhong)也(ye)是最(zui)(zui)省力的(de)(de)，同時也(ye)是最(zui)(zui)耗電(dian)(dian)的(de)(de)一種(zhong)騎(qi)行(xing)方式。但是長期純電(dian)(dian)動騎(qi)行(xing)會(hui)導致類似“摩托車(che)綜合癥”影(ying)響健康。

    助(zhu)力騎(qi)(qi)行，目(mu)前的電(dian)動自行車助(zhu)力方式有(you)真假兩(liang)種(zhong)，使用(yong)力矩傳感(gan)(gan)器智能(neng)助(zhu)力騎(qi)(qi)行，使用(yong)速度(du)傳感(gan)(gan)器助(zhu)力騎(qi)(qi)行。下面就力矩傳感(gan)(gan)器和速度(du)傳感(gan)(gan)做一下對比。

力矩助力傳感器
速度助力傳感器

優點：
1.能夠實現人機對話，便于對整車的控制； 
2.能夠精準實現人力和電動力力的協同工作； 
3.騎行輕松，有益健康，變騎行為樂趣； 
4.有利于挖掘人力節約電力，增加續行里程； 
5.安(an)全，杜絕推行輪盤和飛(fei)輪聯(lian)動導致的飛(fei)車。

優點： 
成本較低。
缺點：  
1.成本較高； 
2.技術成熟度較低。

缺(que)點：1.完全不能(neng)實現人力和(he)電動(dong)力的(de)協同工作；2.騎行時掌控(kong)困難(nan)，有危(wei)險(xian)性； 3.推行時輪盤和(he)飛輪聯動(dong)會導致飛車(che)危(wei)險(xian)。

    
   鑒于速度傳(chuan)感(gan)器(qi)的(de)騎行時和(he)推行時的(de)嚴重安全(quan)隱患，完全(quan)不(bu)能(neng)實現人力和(he)電(dian)動力的(de)協(xie)同工作(zuo)，根本就不(bu)是(shi)什么助力傳(chuan)感(gan)器(qi)。力矩助力傳(chuan)感(gan)器(qi)則在安全(quan)等(deng) 5個(ge)方面有著(zhu)明顯的(de)優勢則是(shi)真正的(de)助力傳(chuan)感(gan)器(qi)。

      從電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)的(de)(de)(de)(de)三種(zhong)騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)狀態不難看出，助(zhu)力(li)騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)兼顧了純(chun)(chun)(chun)人(ren)(ren)力(li)踩(cai)踏(ta)騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)和(he)純(chun)(chun)(chun)電(dian)(dian)動(dong)(dong)(dong)騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)優點(dian)。能(neng)夠(gou)實現人(ren)(ren)力(li)和(he)電(dian)(dian)動(dong)(dong)(dong)力(li)力(li)的(de)(de)(de)(de)協同(tong)工作；.騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)輕松，有(you)(you)益(yi)健(jian)康，變騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)為樂趣；有(you)(you)利于挖掘(jue)人(ren)(ren)力(li)節約電(dian)(dian)力(li)，增加續行(xing)(xing)(xing)(xing)(xing)(xing)(xing)里程。就自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)來說(shuo)純(chun)(chun)(chun)人(ren)(ren)力(li)踩(cai)踏(ta)騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)功(gong)(gong)能(neng)是(shi)其(qi)本(ben)質(zhi)屬性(xing)；就輕便(bian)電(dian)(dian)動(dong)(dong)(dong)摩托車(che)(che)來說(shuo)，純(chun)(chun)(chun)電(dian)(dian)動(dong)(dong)(dong)功(gong)(gong)能(neng)是(shi)其(qi)本(ben)質(zhi)屬性(xing)；那么什么才是(shi)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)的(de)(de)(de)(de)本(ben)質(zhi)屬性(xing)呢，能(neng)夠(gou)實現人(ren)(ren)力(li)和(he)電(dian)(dian)動(dong)(dong)(dong)力(li)協同(tong)工作的(de)(de)(de)(de)助(zhu)力(li)騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)功(gong)(gong)能(neng)就是(shi)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)的(de)(de)(de)(de)本(ben)質(zhi)屬性(xing)。助(zhu)力(li)騎行(xing)(xing)(xing)(xing)(xing)(xing)(xing)是(shi)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)向(xiang)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)這一更高層次產品演化的(de)(de)(de)(de)區別和(he)標志(zhi)，是(shi)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)的(de)(de)(de)(de)靈(ling)魂(hun)。那種(zhong)在電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)上把人(ren)(ren)力(li)腳踏(ta)功(gong)(gong)能(neng)和(he)純(chun)(chun)(chun)電(dian)(dian)動(dong)(dong)(dong)功(gong)(gong)能(neng)相互孤(gu)立(li)的(de)(de)(de)(de)設計方案只(zhi)能(neng)制造出沒有(you)(you)靈(ling)魂(hun)的(de)(de)(de)(de)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)(xing)(xing)(xing)車(che)(che)軀殼(ke)。

    什么(me)是(shi)設(she)計電(dian)動(dong)自(zi)行(xing)車的(de)(de)第一要素(su)？電(dian)動(dong)自(zi)行(xing)車的(de)(de)設(she)計要求有(you)：安全，便于規模化生產(chan)，時尚美(mei)觀，舒適便捷，穩定(ding)性(xing)，維修便利等，在這些因素(su)中誰(shui)是(shi)最重要的(de)(de)，誰(shui)是(shi)次要的(de)(de)，誰(shui)是(shi)應(ying)當兼顧考(kao)慮的(de)(de)；它們之間又是(shi)一種什么(me)樣的(de)(de)關系？

    電動(dong)(dong)自(zi)行(xing)車(che)(che)作(zuo)為一(yi)(yi)種交(jiao)通工(gong)具來(lai)說，保護消費者在使用(yong)(yong)過程中的(de)(de)(de)人(ren)身和財產安(an)全(quan)無疑是(shi)最重(zhong)要的(de)(de)(de)。然而目(mu)前(qian)的(de)(de)(de)市場上(shang)的(de)(de)(de)超(chao)過 70%電動(dong)(dong)自(zi)行(xing)車(che)(che)由于使用(yong)(yong)了(le)速(su)度(du)傳感(gan)器和自(zi)動(dong)(dong)定速(su)功(gong)能（美(mei)其(qi)名曰(yue)自(zi)動(dong)(dong)巡航）有(you)嚴重(zhong)安(an)全(quan)隱患的(de)(de)(de)飛車(che)(che)，這實在電動(dong)(dong)自(zi)行(xing)車(che)(che)行(xing)業的(de)(de)(de)最大悲哀！在電動(dong)(dong)自(zi)行(xing)車(che)(che)設計要素(su)的(de)(de)(de)排(pai)列關系應當是(shi)：安(an)全(quan)第(di)一(yi)(yi)；穩定性其(qi)次；舒適便(bian)捷(jie)再次；便(bian)于規模化生產和維修便(bian)利是(shi)一(yi)(yi)對(dui)對(dui)稱的(de)(de)(de)問題；在以上(shang)的(de)(de)(de)基(ji)礎上(shang)才有(you)資格談(tan)時尚美(mei)觀。

電動自行車的理想模型是什么樣的？
項目
參照指標
安全性
不飛車
穩定性
較長時間保持出廠時的狀態
續行里程
純電動>45KM, 純助力>90KM
電池及整車使用壽命
大于 3年
舒適便捷性
長距離駕駛不疲勞，操作便捷
速度及加速度
符合國標，加速平穩
便于規模化生產程度
部件一致化程度高，便于流水線生產
維修便利性
整車便于拆卸維修；部件一直化程度高，通用性強便于更換
時尚美觀性
以自行車的審美觀評判
剎車距離
距離較短，減速均勻
重量的分布均勻程度
重量分布均勻
電量顯示的偏差程度
能夠即使反映電池實際容量
線束布局合理及隱蔽性
簡練，能夠隱蔽盡量隱蔽
騎行阻力系數
 以自行車為參照標準
整車重量
鋁合金(jin)<25KG，碳鋼<26KG 

電動自行車和電動摩托及自行車的本質區別是什么？
    就(jiu)自(zi)行(xing)(xing)車(che)來說純人(ren)力(li)踩踏(ta)(ta)騎行(xing)(xing)功(gong)(gong)(gong)能(neng)是(shi)其本(ben)質(zhi)屬(shu)性(xing)(xing)；就(jiu)輕(qing)便(bian)電動(dong)(dong)摩托車(che)來說，純電動(dong)(dong)功(gong)(gong)(gong)能(neng)是(shi)其本(ben)質(zhi)屬(shu)性(xing)(xing)；那么(me)什么(me)才(cai)(cai)是(shi)電動(dong)(dong)自(zi)行(xing)(xing)車(che)的(de)本(ben)質(zhi)屬(shu)性(xing)(xing)呢，融(rong)合純人(ren)力(li)踩踏(ta)(ta)功(gong)(gong)(gong)能(neng)和純電動(dong)(dong)功(gong)(gong)(gong)能(neng)的(de)助力(li)功(gong)(gong)(gong)能(neng)是(shi)電動(dong)(dong)自(zi)行(xing)(xing)車(che)的(de)本(ben)質(zhi)屬(shu)性(xing)(xing)，是(shi)電動(dong)(dong)自(zi)行(xing)(xing)車(che)區別(bie)于(yu)自(zi)行(xing)(xing)車(che)和輕(qing)便(bian)摩托車(che)的(de)唯一(yi)標志。搞(gao)清了這個問題(ti)，才(cai)(cai)不致于(yu)生產出(chu)與自(zi)行(xing)(xing)車(che)沒(mei)有什么(me)關系，讓交(jiao)警分不出(chu)來是(shi)電動(dong)(dong)自(zi)行(xing)(xing)車(che)還(huan)是(shi)摩托車(che)的(de)畸形(xing)產品來。