雖然早在(zai) 1999年《 GB17761-1999電(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)行車(che)通用技(ji)術條(tiao)件》對電(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)行車(che)有(you)過(guo)名確的(de)定義，也(ye)有(you)著詳盡的(de)規(gui)范，然而(er)實際的(de)現狀是(shi)絕大(da)多數電(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)行車(che)突(tu)破了這(zhe)個(ge)限制，經過(guo) 10年演(yan)變成了與這(zhe)個(ge)國家標準幾(ji)乎(hu)沒有(you)什么關系(xi)的(de)另外(wai)一(yi)種產(chan)品。在(zai)這(zhe)里，單從技(ji)術的(de)角度，笨重的(de)鉛酸電(dian)(dian)池，電(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)行車(che)和(he)電(dian)(dian)動(dong)(dong)(dong)摩(mo)托車(che)概(gai)念的(de)混淆(xiao)是(shi)這(zhe)個(ge)演(yan)變的(de)最主要的(de)罪(zui)魁禍首。然而(er)在(zai)這(zhe)個(ge)演(yan)變的(de)另外(wai)一(yi)個(ge)結果是(shi)，由于鉛酸電(dian)(dian)池較短的(de)壽命，由于電(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)行車(che)的(de)粗制濫(lan)造，電(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)行車(che)成為一(yi)個(ge)沒有(you)任何安全，劣質短命產(chan)品代名詞(ci)。

    就在(zai)這(zhe)個(ge)(ge)(ge)(ge)時(shi)(shi)候(hou)，用于電(dian)(dian)(dian)動(dong)自行(xing)車的鋰電(dian)(dian)(dian)池日漸成熟(shu)了(le)(le)，似乎(hu)遲到了(le)(le) 10年。這(zhe)個(ge)(ge)(ge)(ge)時(shi)(shi)候(hou)，普(pu)通的消費者已(yi)(yi)經很難分清合格電(dian)(dian)(dian)動(dong)自行(xing)車和電(dian)(dian)(dian)動(dong)摩(mo)(mo)托車(含電(dian)(dian)(dian)動(dong)摩(mo)(mo)托車和輕便電(dian)(dian)(dian)動(dong)摩(mo)(mo)托車)的區(qu)別(bie)了(le)(le)；這(zhe)個(ge)(ge)(ge)(ge)時(shi)(shi)候(hou)，超(chao)(chao)標(biao)的電(dian)(dian)(dian)動(dong)自行(xing)車已(yi)(yi)經在(zai)中國市場飽(bao)和了(le)(le)；這(zhe)個(ge)(ge)(ge)(ge)時(shi)(shi)候(hou)，超(chao)(chao)標(biao)的電(dian)(dian)(dian)動(dong)自行(xing)車消費者和超(chao)(chao)標(biao)電(dian)(dian)(dian)動(dong)自行(xing)車生產企業(ye)已(yi)(yi)經敢于和制定電(dian)(dian)(dian)動(dong)自行(xing)車標(biao)準的國家標(biao)準化委(wei)員(yuan)會叫板了(le)(le)。

    然而，然而鋰電池必然和(he)電動自行(xing)車(che)有一個(ge)完美的(de)(de)結合(he)，這是(shi)由于鋰電池獨有的(de)(de)輕便和(he)超長(chang)壽(shou)命的(de)(de)本質屬性(xing)決定的(de)(de)，鋰電池必然為電動自行(xing)車(che)插上騰飛的(de)(de)翅膀。

    在電(dian)動自(zi)行(xing)(xing)車行(xing)(xing)業已經迎(ying)來第二次生命的(de)今(jin)天(tian)，為(wei)了(le)能讓(rang)電(dian)動自(zi)行(xing)(xing)車行(xing)(xing)業有一個健康的(de)的(de)發展(zhan)，我們有責任來思考和回答(da)一些最基礎問題(ti)。當然這些問題(ti)都將圍繞著電(dian)動自(zi)行(xing)(xing)車的(de)設計這個載體展(zhan)開。 

    談到電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)車(che)(che)(che)的(de)(de)(de)(de)(de)(de)設(she)計，我(wo)們(men)首(shou)先要(yao)(yao)搞清(qing)一些基本的(de)(de)(de)(de)(de)(de)問題(ti)。什(shen)么(me)(me)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)？電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)(de)(de)(de)工業基礎是(shi)(shi)什(shen)么(me)(me)？什(shen)么(me)(me)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)(de)(de)(de)靈(ling)魂？電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)有三種(zhong)騎(qi)行(xing)(xing)(xing)(xing)狀(zhuang)態，即純人力騎(qi)行(xing)(xing)(xing)(xing)，純電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)騎(qi)行(xing)(xing)(xing)(xing)，電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)力和(he)人力騎(qi)行(xing)(xing)(xing)(xing)混合(he)。三者的(de)(de)(de)(de)(de)(de)關(guan)系(xi)是(shi)(shi)什(shen)么(me)(me)，電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)力和(he)人力騎(qi)行(xing)(xing)(xing)(xing)混合(he)是(shi)(shi)一種(zhong)什(shen)么(me)(me)樣的(de)(de)(de)(de)(de)(de)混合(he)？什(shen)么(me)(me)是(shi)(shi)設(she)計電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)(de)(de)(de)第(di)一要(yao)(yao)素？電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)(de)(de)(de)設(she)計要(yao)(yao)求有：安全，時尚美觀，舒(shu)適便捷，便于規模(mo)化生產，長期(qi)穩(wen)定性，維修便利(li)等(deng)，在這(zhe)些因(yin)素中誰是(shi)(shi)最重要(yao)(yao)的(de)(de)(de)(de)(de)(de)，誰是(shi)(shi)次要(yao)(yao)的(de)(de)(de)(de)(de)(de)，誰是(shi)(shi)應當(dang)兼(jian)顧考(kao)慮的(de)(de)(de)(de)(de)(de)；它們(men)之間(jian)又是(shi)(shi)一種(zhong)什(shen)么(me)(me)樣的(de)(de)(de)(de)(de)(de)關(guan)系(xi)？電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)和(he)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)摩托及自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)(de)(de)(de)本質區別是(shi)(shi)什(shen)么(me)(me)？電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)(de)(de)(de)理想模(mo)型是(shi)(shi)什(shen)么(me)(me)樣的(de)(de)(de)(de)(de)(de)？

第一，什么事電動自(zi)行車？

     國標委員會(hui)《 GB17761-1999電(dian)動自(zi)行(xing)車(che)(che)通用技術條件》的(de)定義是(shi)：電(dian)動自(zi)行(xing)車(che)(che)是(shi)以蓄電(dian)池作為輔助能(neng)源，具有兩個車(che)(che)輪，能(neng)夠實現人力騎(qi)行(xing)，電(dian)動或電(dian)動助力騎(qi)行(xing)的(de)特種(zhong)自(zi)行(xing)車(che)(che)。

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(xian)電動力或助力騎行。

     這(zhe)個(ge)解(jie)釋很(hen)好(hao)的(de)(de)回答(da)(da)了電(dian)(dian)動(dong)(dong)自行(xing)(xing)車(che)(che)(che)是以蓄(xu)電(dian)(dian)池(chi)為輔助能(neng)(neng)源(yuan)，電(dian)(dian)動(dong)(dong)自行(xing)(xing)車(che)(che)(che)是自行(xing)(xing)車(che)(che)(che)的(de)(de)一(yi)種，屬(shu)(shu)于特種自行(xing)(xing)車(che)(che)(che)。但(dan)是沒有(you)說(shuo)明人力(li)(li)騎行(xing)(xing)，電(dian)(dian)動(dong)(dong)或助力(li)(li)騎行(xing)(xing)三者的(de)(de)辯(bian)證關系，沒有(you)很(hen)好(hao)的(de)(de)回答(da)(da)電(dian)(dian)動(dong)(dong)自行(xing)(xing)車(che)(che)(che)與自行(xing)(xing)車(che)(che)(che)和(he)輕(qing)便(bian)電(dian)(dian)動(dong)(dong)摩托(tuo)的(de)(de)區別的(de)(de)本(ben)質屬(shu)(shu)性是什么。我覺得這(zhe)樣解(jie)釋更能(neng)(neng)說(shuo)明電(dian)(dian)動(dong)(dong)自行(xing)(xing)車(che)(che)(che)的(de)(de)本(ben)質屬(shu)(shu)性即：電(dian)(dian)動(dong)(dong)自行(xing)(xing)是一(yi)種在自行(xing)(xing)車(che)(che)(che)的(de)(de)基(ji)礎上融入電(dian)(dian)動(dong)(dong)功能(neng)(neng)，并且(qie)能(neng)(neng)夠實現(xian)人力(li)(li)和(he)電(dian)(dian)動(dong)(dong)力(li)(li)有(you)機協同工作的(de)(de)一(yi)種輕(qing)便(bian)特種自行(xing)(xing)車(che)(che)(che)。

第二，電動自行車的工業基礎是什么？
    既然電(dian)動(dong)(dong)(dong)自行車(che)(che)是(shi)自行車(che)(che)的(de)(de)一(yi)(yi)種(zhong)，是(shi)一(yi)(yi)種(zhong)特殊的(de)(de)自行車(che)(che)，那么電(dian)動(dong)(dong)(dong)自行車(che)(che)的(de)(de)工業基(ji)礎就(jiu)(jiu)是(shi)自行車(che)(che)。電(dian)動(dong)(dong)(dong)自行車(che)(che)其他部件的(de)(de)和(he)系統的(de)(de)設計(ji)都應該圍繞(rao)這個(ge)工業基(ji)礎展(zhan)開。偏離了這個(ge)基(ji)礎，就(jiu)(jiu)會搞出(chu)一(yi)(yi)些四(si)不象的(de)(de)怪胎。像摩托(tuo)一(yi)(yi)樣(yang)超標電(dian)動(dong)(dong)(dong)車(che)(che)就(jiu)(jiu)是(shi)一(yi)(yi)個(ge)典型(xing)的(de)(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(san)種騎行(xing)狀態(tai)，即純人力(li)騎行(xing)，純電(dian)動(dong)騎行(xing)，電(dian)動(dong)助力(li)。

     三(san)者的(de)(de)(de)關系是(shi)什么，電(dian)(dian)(dian)動(dong)力和人(ren)(ren)力騎(qi)(qi)行(xing)(xing)(xing)(xing)(xing)混合是(shi)一種什么樣的(de)(de)(de)混合？純人(ren)(ren)力踩踏騎(qi)(qi)行(xing)(xing)(xing)(xing)(xing)是(shi)基礎，電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)不(bu)可避免(mian)的(de)(de)(de)會出現路上(shang)電(dian)(dian)(dian)量用盡的(de)(de)(de)時候，如果沒有人(ren)(ren)力騎(qi)(qi)行(xing)(xing)(xing)(xing)(xing)功(gong)能(neng)(neng)拋錨在(zai)路上(shang)是(shi)一件非常討厭的(de)(de)(de)事情，同(tong)時沒有騎(qi)(qi)行(xing)(xing)(xing)(xing)(xing)功(gong)能(neng)(neng)電(dian)(dian)(dian)動(dong)兩輪車(che)(che)(che)也(ye)不(bu)能(neng)(neng)成為電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)。但(dan)是(shi)現在(zai)的(de)(de)(de)問題(ti)是(shi)電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)自(zi)(zi)從(cong)有了(le)電(dian)(dian)(dian)動(dong)功(gong)能(neng)(neng)之后，騎(qi)(qi)行(xing)(xing)(xing)(xing)(xing)功(gong)能(neng)(neng)被忽視，不(bu)少電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)純人(ren)(ren)力騎(qi)(qi)行(xing)(xing)(xing)(xing)(xing)費(fei)力。實(shi)際上(shang)，如果電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)腳踏功(gong)能(neng)(neng)越(yue)費(fei)力，則(ze)說明電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)阻力越(yue)大，電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)阻力越(yue)大，則(ze)同(tong)樣的(de)(de)(de)電(dian)(dian)(dian)池(chi)容(rong)量電(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)(xing)(xing)車(che)(che)(che)的(de)(de)(de)續行(xing)(xing)(xing)(xing)(xing)距離越(yue)近(jin)。

     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(gai)善整車(che)結構，降低空氣的動態(tai)阻力(li)； 4降低整車(che)重量(liang)。

    只有(you)降低了電動(dong)自(zi)行(xing)(xing)車(che)的(de)阻力，電動(dong)自(zi)行(xing)(xing)車(che)才(cai)有(you)可能有(you)良好的(de)騎行(xing)(xing)能力，才(cai)能為電動(dong)自(zi)行(xing)(xing)車(che)的(de)純(chun)電動(dong)及(ji)電動(dong)助力騎行(xing)(xing)打下良好的(de)基礎。

    純電(dian)(dian)動騎行(xing)，毫無(wu)疑問純電(dian)(dian)動騎行(xing)是不用消耗騎行(xing)者的(de)(de)體力的(de)(de)，當然(ran)在(zai)三中騎行(xing)狀(zhuang)態中也是最省力的(de)(de)，同時也是最耗電(dian)(dian)的(de)(de)一種(zhong)騎行(xing)方(fang)式。但(dan)是長(chang)期(qi)純電(dian)(dian)動騎行(xing)會導(dao)致類似(si)“摩托車綜合癥(zheng)”影(ying)響健康。

    助(zhu)力(li)騎行(xing)(xing)(xing)(xing)，目(mu)前的(de)電動自行(xing)(xing)(xing)(xing)車助(zhu)力(li)方式(shi)有真假兩種，使(shi)用力(li)矩(ju)傳感器智能助(zhu)力(li)騎行(xing)(xing)(xing)(xing)，使(shi)用速度傳感器助(zhu)力(li)騎行(xing)(xing)(xing)(xing)。下面就力(li)矩(ju)傳感器和(he)速度傳感做一下對比。

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(jue)推行(xing)輪盤和(he)飛(fei)輪聯動導致(zhi)的飛(fei)車。

優點： 
成本較低。
缺點：  
1.成本較高； 
2.技術成熟度(du)較(jiao)低。

缺點：1.完全不能實現人力和電動力的協同工作；2.騎(qi)行時掌(zhang)控(kong)困難，有危險性； 3.推行時輪(lun)盤和飛輪(lun)聯動會導致飛車危險。

    
   鑒于速度(du)傳感器(qi)的(de)(de)騎(qi)行(xing)時(shi)和推(tui)行(xing)時(shi)的(de)(de)嚴重(zhong)安(an)(an)全隱患(huan)，完(wan)全不(bu)能實現人(ren)力(li)和電動(dong)力(li)的(de)(de)協(xie)同工作，根本就不(bu)是(shi)什么助力(li)傳感器(qi)。力(li)矩助力(li)傳感器(qi)則(ze)在安(an)(an)全等(deng) 5個方面有著明(ming)顯的(de)(de)優勢則(ze)是(shi)真(zhen)正的(de)(de)助力(li)傳感器(qi)。

      從電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)的(de)(de)三種(zhong)騎行(xing)(xing)(xing)狀態不難看出，助力(li)騎行(xing)(xing)(xing)兼顧了(le)純人(ren)(ren)(ren)力(li)踩踏(ta)騎行(xing)(xing)(xing)和(he)純電(dian)(dian)動(dong)(dong)(dong)騎行(xing)(xing)(xing)的(de)(de)優點。能(neng)(neng)(neng)夠實現(xian)人(ren)(ren)(ren)力(li)和(he)電(dian)(dian)動(dong)(dong)(dong)力(li)力(li)的(de)(de)協同工(gong)(gong)作；.騎行(xing)(xing)(xing)輕(qing)松，有益健康，變騎行(xing)(xing)(xing)為樂趣(qu)；有利于(yu)挖掘人(ren)(ren)(ren)力(li)節約電(dian)(dian)力(li)，增(zeng)加續(xu)行(xing)(xing)(xing)里(li)程。就(jiu)自(zi)行(xing)(xing)(xing)車(che)(che)(che)來說純人(ren)(ren)(ren)力(li)踩踏(ta)騎行(xing)(xing)(xing)功(gong)能(neng)(neng)(neng)是(shi)其本質(zhi)屬(shu)性；就(jiu)輕(qing)便電(dian)(dian)動(dong)(dong)(dong)摩托(tuo)車(che)(che)(che)來說，純電(dian)(dian)動(dong)(dong)(dong)功(gong)能(neng)(neng)(neng)是(shi)其本質(zhi)屬(shu)性；那(nei)么(me)什么(me)才是(shi)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)的(de)(de)本質(zhi)屬(shu)性呢，能(neng)(neng)(neng)夠實現(xian)人(ren)(ren)(ren)力(li)和(he)電(dian)(dian)動(dong)(dong)(dong)力(li)協同工(gong)(gong)作的(de)(de)助力(li)騎行(xing)(xing)(xing)功(gong)能(neng)(neng)(neng)就(jiu)是(shi)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)的(de)(de)本質(zhi)屬(shu)性。助力(li)騎行(xing)(xing)(xing)是(shi)自(zi)行(xing)(xing)(xing)車(che)(che)(che)向(xiang)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)這一更高(gao)層(ceng)次產(chan)品(pin)演(yan)化的(de)(de)區別(bie)和(he)標志，是(shi)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)的(de)(de)靈魂(hun)。那(nei)種(zhong)在電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)上(shang)把人(ren)(ren)(ren)力(li)腳踏(ta)功(gong)能(neng)(neng)(neng)和(he)純電(dian)(dian)動(dong)(dong)(dong)功(gong)能(neng)(neng)(neng)相互孤立(li)的(de)(de)設(she)計方案只能(neng)(neng)(neng)制造出沒有靈魂(hun)的(de)(de)電(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)軀殼(ke)。

    什么(me)是(shi)(shi)設計電動自行(xing)車的(de)第(di)一(yi)要素？電動自行(xing)車的(de)設計要求有：安全，便(bian)(bian)于(yu)規模化生產，時尚美觀，舒(shu)適便(bian)(bian)捷，穩定性，維(wei)修便(bian)(bian)利等，在這些(xie)因素中誰是(shi)(shi)最(zui)重要的(de)，誰是(shi)(shi)次要的(de)，誰是(shi)(shi)應當兼(jian)顧(gu)考(kao)慮的(de)；它們(men)之間又(you)是(shi)(shi)一(yi)種什么(me)樣的(de)關系？

    電動(dong)自行(xing)車(che)作(zuo)為一種交(jiao)通工(gong)具來(lai)說，保護消費者在(zai)(zai)使(shi)用過程中的(de)(de)(de)(de)人身和財產安全無疑是最重(zhong)要的(de)(de)(de)(de)。然(ran)而目前(qian)的(de)(de)(de)(de)市場上的(de)(de)(de)(de)超過 70%電動(dong)自行(xing)車(che)由(you)于(yu)使(shi)用了速度傳感器(qi)和自動(dong)定速功(gong)能（美其(qi)名曰自動(dong)巡航）有嚴重(zhong)安全隱患的(de)(de)(de)(de)飛車(che)，這實在(zai)(zai)電動(dong)自行(xing)車(che)行(xing)業(ye)的(de)(de)(de)(de)最大悲哀！在(zai)(zai)電動(dong)自行(xing)車(che)設計要素的(de)(de)(de)(de)排列關系應當是：安全第一；穩定性其(qi)次；舒適便捷再(zai)次；便于(yu)規模化生產和維(wei)修(xiu)便利是一對(dui)對(dui)稱的(de)(de)(de)(de)問題；在(zai)(zai)以(yi)上的(de)(de)(de)(de)基礎(chu)上才有資格談(tan)時尚美觀。

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<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？
    就自(zi)行(xing)(xing)車來說純(chun)人力踩踏騎行(xing)(xing)功(gong)(gong)能(neng)是(shi)其(qi)本質(zhi)屬性；就輕便電(dian)(dian)動(dong)摩托(tuo)車來說，純(chun)電(dian)(dian)動(dong)功(gong)(gong)能(neng)是(shi)其(qi)本質(zhi)屬性；那么什(shen)么才(cai)是(shi)電(dian)(dian)動(dong)自(zi)行(xing)(xing)車的(de)(de)本質(zhi)屬性呢，融合純(chun)人力踩踏功(gong)(gong)能(neng)和(he)純(chun)電(dian)(dian)動(dong)功(gong)(gong)能(neng)的(de)(de)助力功(gong)(gong)能(neng)是(shi)電(dian)(dian)動(dong)自(zi)行(xing)(xing)車的(de)(de)本質(zhi)屬性，是(shi)電(dian)(dian)動(dong)自(zi)行(xing)(xing)車區別于自(zi)行(xing)(xing)車和(he)輕便摩托(tuo)車的(de)(de)唯一標(biao)志(zhi)。搞清了(le)這(zhe)個問題(ti)，才(cai)不致于生產出(chu)與自(zi)行(xing)(xing)車沒有什(shen)么關系，讓交警分不出(chu)來是(shi)電(dian)(dian)動(dong)自(zi)行(xing)(xing)車還是(shi)摩托(tuo)車的(de)(de)畸形產品來。