雖然(ran)(ran)早在(zai) 1999年《 GB17761-1999電(dian)(dian)動(dong)自行(xing)(xing)車(che)(che)通用技術條件》對電(dian)(dian)動(dong)自行(xing)(xing)車(che)(che)有(you)過名(ming)確(que)的(de)(de)(de)(de)定(ding)義，也有(you)著詳盡(jin)的(de)(de)(de)(de)規范，然(ran)(ran)而實際的(de)(de)(de)(de)現狀(zhuang)是(shi)絕大多數電(dian)(dian)動(dong)自行(xing)(xing)車(che)(che)突破(po)了這(zhe)個限制，經過 10年演變成了與這(zhe)個國家標準(zhun)幾乎(hu)沒(mei)有(you)什么關(guan)系(xi)的(de)(de)(de)(de)另外一種產品。在(zai)這(zhe)里(li)，單從技術的(de)(de)(de)(de)角度，笨重的(de)(de)(de)(de)鉛酸(suan)電(dian)(dian)池(chi)，電(dian)(dian)動(dong)自行(xing)(xing)車(che)(che)和電(dian)(dian)動(dong)摩托車(che)(che)概(gai)念的(de)(de)(de)(de)混淆是(shi)這(zhe)個演變的(de)(de)(de)(de)最主要的(de)(de)(de)(de)罪魁禍首。然(ran)(ran)而在(zai)這(zhe)個演變的(de)(de)(de)(de)另外一個結果是(shi)，由于(yu)(yu)鉛酸(suan)電(dian)(dian)池(chi)較(jiao)短的(de)(de)(de)(de)壽命，由于(yu)(yu)電(dian)(dian)動(dong)自行(xing)(xing)車(che)(che)的(de)(de)(de)(de)粗(cu)制濫造，電(dian)(dian)動(dong)自行(xing)(xing)車(che)(che)成為一個沒(mei)有(you)任何(he)安全，劣質短命產品代名(ming)詞(ci)。

    就在這(zhe)個(ge)時(shi)候(hou)(hou)，用于電(dian)動(dong)(dong)(dong)自行(xing)車的(de)鋰電(dian)池日(ri)漸(jian)成熟了，似乎遲到了 10年。這(zhe)個(ge)時(shi)候(hou)(hou)，普通(tong)的(de)消費者已(yi)經(jing)(jing)(jing)很難分清合(he)格電(dian)動(dong)(dong)(dong)自行(xing)車和(he)電(dian)動(dong)(dong)(dong)摩托(tuo)(tuo)車(含電(dian)動(dong)(dong)(dong)摩托(tuo)(tuo)車和(he)輕便電(dian)動(dong)(dong)(dong)摩托(tuo)(tuo)車)的(de)區別了；這(zhe)個(ge)時(shi)候(hou)(hou)，超(chao)(chao)標的(de)電(dian)動(dong)(dong)(dong)自行(xing)車已(yi)經(jing)(jing)(jing)在中國市(shi)場飽和(he)了；這(zhe)個(ge)時(shi)候(hou)(hou)，超(chao)(chao)標的(de)電(dian)動(dong)(dong)(dong)自行(xing)車消費者和(he)超(chao)(chao)標電(dian)動(dong)(dong)(dong)自行(xing)車生產企業已(yi)經(jing)(jing)(jing)敢(gan)于和(he)制(zhi)定(ding)電(dian)動(dong)(dong)(dong)自行(xing)車標準的(de)國家標準化委員(yuan)會叫板(ban)了。

    然(ran)而(er)，然(ran)而(er)鋰電池必然(ran)和電動自行車有一(yi)個完美的(de)結合，這是由于鋰電池獨有的(de)輕便和超長壽命的(de)本質屬性決定的(de)，鋰電池必然(ran)為電動自行車插上騰飛的(de)翅膀。

    在電(dian)(dian)動(dong)自行(xing)車行(xing)業已經(jing)迎來(lai)第二次生命的(de)(de)今天，為了能讓電(dian)(dian)動(dong)自行(xing)車行(xing)業有一個(ge)健(jian)康的(de)(de)的(de)(de)發展(zhan)，我們有責任來(lai)思考和回答一些最基礎問題(ti)。當然這(zhe)些問題(ti)都將圍繞著電(dian)(dian)動(dong)自行(xing)車的(de)(de)設計這(zhe)個(ge)載體展(zhan)開。 

    談到電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)車(che)(che)的(de)(de)(de)設計，我們首先(xian)要(yao)搞清一(yi)(yi)些(xie)基本的(de)(de)(de)問題。什(shen)(shen)么(me)(me)(me)是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)？電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)的(de)(de)(de)工(gong)業基礎(chu)是(shi)(shi)(shi)什(shen)(shen)么(me)(me)(me)？什(shen)(shen)么(me)(me)(me)是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)的(de)(de)(de)靈魂？電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)有三(san)種騎行(xing)(xing)(xing)狀態，即純人(ren)力(li)騎行(xing)(xing)(xing)，純電(dian)(dian)(dian)(dian)動(dong)騎行(xing)(xing)(xing)，電(dian)(dian)(dian)(dian)動(dong)力(li)和人(ren)力(li)騎行(xing)(xing)(xing)混合。三(san)者的(de)(de)(de)關系是(shi)(shi)(shi)什(shen)(shen)么(me)(me)(me)，電(dian)(dian)(dian)(dian)動(dong)力(li)和人(ren)力(li)騎行(xing)(xing)(xing)混合是(shi)(shi)(shi)一(yi)(yi)種什(shen)(shen)么(me)(me)(me)樣的(de)(de)(de)混合？什(shen)(shen)么(me)(me)(me)是(shi)(shi)(shi)設計電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)的(de)(de)(de)第一(yi)(yi)要(yao)素？電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)的(de)(de)(de)設計要(yao)求(qiu)有：安全，時尚美觀，舒適(shi)便捷，便于(yu)規(gui)模(mo)化(hua)生產，長期穩定性，維修便利等，在這些(xie)因(yin)素中誰(shui)是(shi)(shi)(shi)最重(zhong)要(yao)的(de)(de)(de)，誰(shui)是(shi)(shi)(shi)次要(yao)的(de)(de)(de)，誰(shui)是(shi)(shi)(shi)應當(dang)兼顧考慮的(de)(de)(de)；它們之間又是(shi)(shi)(shi)一(yi)(yi)種什(shen)(shen)么(me)(me)(me)樣的(de)(de)(de)關系？電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)和電(dian)(dian)(dian)(dian)動(dong)摩(mo)托及(ji)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)的(de)(de)(de)本質區別(bie)是(shi)(shi)(shi)什(shen)(shen)么(me)(me)(me)？電(dian)(dian)(dian)(dian)動(dong)自(zi)(zi)行(xing)(xing)(xing)車(che)(che)的(de)(de)(de)理(li)想模(mo)型是(shi)(shi)(shi)什(shen)(shen)么(me)(me)(me)樣的(de)(de)(de)？

第(di)一，什么事電動自行車？

     國標(biao)委員(yuan)會(hui)《 GB17761-1999電動(dong)自(zi)(zi)行(xing)車(che)(che)通用技術條(tiao)件》的(de)定(ding)義是：電動(dong)自(zi)(zi)行(xing)車(che)(che)是以蓄電池作為輔助能源(yuan)，具有(you)兩個車(che)(che)輪，能夠實現人力(li)(li)騎行(xing)，電動(dong)或電動(dong)助力(li)(li)騎行(xing)的(de)特(te)種(zhong)自(zi)(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(shi)現電動力(li)或(huo)助(zhu)力(li)騎行。

     這(zhe)個(ge)解(jie)釋很好的(de)回(hui)答了電(dian)(dian)(dian)(dian)動自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)是以蓄電(dian)(dian)(dian)(dian)池(chi)為輔助能(neng)(neng)源(yuan)，電(dian)(dian)(dian)(dian)動自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)是自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)的(de)一種(zhong)，屬(shu)(shu)(shu)于(yu)特種(zhong)自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)。但(dan)是沒有(you)說(shuo)明人力騎行(xing)(xing)(xing)，電(dian)(dian)(dian)(dian)動或助力騎行(xing)(xing)(xing)三者的(de)辯證關(guan)系，沒有(you)很好的(de)回(hui)答電(dian)(dian)(dian)(dian)動自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)與(yu)自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)和(he)輕便(bian)電(dian)(dian)(dian)(dian)動摩托的(de)區別的(de)本質屬(shu)(shu)(shu)性是什么(me)。我(wo)覺(jue)得這(zhe)樣解(jie)釋更能(neng)(neng)說(shuo)明電(dian)(dian)(dian)(dian)動自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)的(de)本質屬(shu)(shu)(shu)性即：電(dian)(dian)(dian)(dian)動自(zi)行(xing)(xing)(xing)是一種(zhong)在(zai)自(zi)行(xing)(xing)(xing)車(che)(che)(che)(che)的(de)基礎上(shang)融入電(dian)(dian)(dian)(dian)動功能(neng)(neng)，并(bing)且能(neng)(neng)夠實現人力和(he)電(dian)(dian)(dian)(dian)動力有(you)機協同工作的(de)一種(zhong)輕便(bian)特種(zhong)自(zi)行(xing)(xing)(xing)車(che)(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(xing)車(che)是自行(xing)車(che)的(de)一(yi)(yi)種，是一(yi)(yi)種特殊的(de)自行(xing)車(che)，那么電(dian)動(dong)(dong)(dong)自行(xing)車(che)的(de)工業基(ji)礎就(jiu)是自行(xing)車(che)。電(dian)動(dong)(dong)(dong)自行(xing)車(che)其他部件的(de)和系統(tong)的(de)設計都應該圍繞這個(ge)(ge)工業基(ji)礎展開。偏(pian)離了這個(ge)(ge)基(ji)礎，就(jiu)會搞出一(yi)(yi)些(xie)四(si)不(bu)象的(de)怪胎。像摩托(tuo)一(yi)(yi)樣超標(biao)電(dian)動(dong)(dong)(dong)車(che)就(jiu)是一(yi)(yi)個(ge)(ge)典型的(de)例(li)子。

第三，什么是電動自行車的靈魂？
     電動(dong)自行(xing)車有(you)三種騎行(xing)狀態(tai)，即純人(ren)力騎行(xing)，純電動(dong)騎行(xing)，電動(dong)助力。

     三(san)者的(de)(de)(de)關(guan)系(xi)是(shi)(shi)什么(me)，電(dian)(dian)(dian)(dian)動(dong)(dong)力和人(ren)力騎(qi)(qi)行(xing)(xing)(xing)混合是(shi)(shi)一種什么(me)樣的(de)(de)(de)混合？純(chun)人(ren)力踩踏騎(qi)(qi)行(xing)(xing)(xing)是(shi)(shi)基礎(chu)，電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車不可避免(mian)的(de)(de)(de)會出現(xian)路上(shang)電(dian)(dian)(dian)(dian)量用盡(jin)的(de)(de)(de)時(shi)候，如果(guo)沒有人(ren)力騎(qi)(qi)行(xing)(xing)(xing)功(gong)(gong)(gong)能(neng)(neng)拋錨在路上(shang)是(shi)(shi)一件非常討厭的(de)(de)(de)事情(qing)，同時(shi)沒有騎(qi)(qi)行(xing)(xing)(xing)功(gong)(gong)(gong)能(neng)(neng)電(dian)(dian)(dian)(dian)動(dong)(dong)兩輪(lun)車也(ye)不能(neng)(neng)成為(wei)電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車。但(dan)是(shi)(shi)現(xian)在的(de)(de)(de)問(wen)題是(shi)(shi)電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車自(zi)(zi)(zi)(zi)(zi)從有了(le)電(dian)(dian)(dian)(dian)動(dong)(dong)功(gong)(gong)(gong)能(neng)(neng)之后，騎(qi)(qi)行(xing)(xing)(xing)功(gong)(gong)(gong)能(neng)(neng)被忽視(shi)，不少電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車純(chun)人(ren)力騎(qi)(qi)行(xing)(xing)(xing)費力。實際上(shang)，如果(guo)電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車的(de)(de)(de)腳踏功(gong)(gong)(gong)能(neng)(neng)越費力，則說明電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車的(de)(de)(de)阻力越大，電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車的(de)(de)(de)阻力越大，則同樣的(de)(de)(de)電(dian)(dian)(dian)(dian)池容(rong)量電(dian)(dian)(dian)(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)(zi)行(xing)(xing)(xing)車的(de)(de)(de)續行(xing)(xing)(xing)距離(li)越近(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改善整(zheng)車(che)結構，降(jiang)(jiang)低(di)空氣的(de)動態阻力(li)； 4降(jiang)(jiang)低(di)整(zheng)車(che)重量。

    只有(you)降低(di)了電(dian)動(dong)自行車(che)的(de)阻力，電(dian)動(dong)自行車(che)才有(you)可(ke)能有(you)良(liang)好的(de)騎(qi)行能力，才能為電(dian)動(dong)自行車(che)的(de)純電(dian)動(dong)及電(dian)動(dong)助力騎(qi)行打下良(liang)好的(de)基礎(chu)。

    純(chun)電動騎(qi)行(xing)(xing)(xing)，毫無疑(yi)問純(chun)電動騎(qi)行(xing)(xing)(xing)是不用消(xiao)耗騎(qi)行(xing)(xing)(xing)者的(de)體力的(de)，當(dang)然(ran)在三中(zhong)騎(qi)行(xing)(xing)(xing)狀(zhuang)態中(zhong)也(ye)是最(zui)(zui)省力的(de)，同(tong)時也(ye)是最(zui)(zui)耗電的(de)一種(zhong)騎(qi)行(xing)(xing)(xing)方式。但(dan)是長期純(chun)電動騎(qi)行(xing)(xing)(xing)會導(dao)致類似“摩托(tuo)車(che)綜合癥”影(ying)響健康。

    助(zhu)力騎行，目前的電動自行車助(zhu)力方式有(you)真假兩種，使用力矩傳感器智能助(zhu)力騎行，使用速度傳感器助(zhu)力騎行。下面就力矩傳感器和速度傳感做一下對比(bi)。

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.安全，杜絕推(tui)行輪盤(pan)和飛(fei)輪聯動導致的飛(fei)車。

優點： 
成本較低。
缺點：  
1.成本較高； 
2.技術成(cheng)熟度較低。

缺點：1.完全(quan)不能實現人力(li)和電(dian)動力(li)的協同工作；2.騎(qi)行(xing)時(shi)掌控(kong)困難，有危(wei)險性； 3.推行(xing)時(shi)輪盤和飛輪聯動會導致飛車危(wei)險。

    
   鑒于速度傳(chuan)感器(qi)的(de)騎(qi)行時和推行時的(de)嚴(yan)重安全(quan)(quan)隱患(huan)，完全(quan)(quan)不(bu)(bu)能實現人力和電(dian)動力的(de)協(xie)同工作，根本就不(bu)(bu)是什么助力傳(chuan)感器(qi)。力矩助力傳(chuan)感器(qi)則(ze)在安全(quan)(quan)等 5個方面(mian)有著明顯的(de)優勢則(ze)是真正的(de)助力傳(chuan)感器(qi)。

      從電動(dong)(dong)(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)車(che)的(de)(de)三種(zhong)騎(qi)行(xing)(xing)(xing)(xing)狀態不難看(kan)出，助(zhu)(zhu)力(li)騎(qi)行(xing)(xing)(xing)(xing)兼顧了純(chun)人(ren)力(li)踩踏騎(qi)行(xing)(xing)(xing)(xing)和(he)純(chun)電動(dong)(dong)(dong)(dong)(dong)騎(qi)行(xing)(xing)(xing)(xing)的(de)(de)優點。能夠(gou)實現人(ren)力(li)和(he)電動(dong)(dong)(dong)(dong)(dong)力(li)力(li)的(de)(de)協同工(gong)作；.騎(qi)行(xing)(xing)(xing)(xing)輕松，有(you)益健(jian)康(kang)，變騎(qi)行(xing)(xing)(xing)(xing)為樂趣；有(you)利于(yu)挖掘(jue)人(ren)力(li)節約電力(li)，增加續行(xing)(xing)(xing)(xing)里程。就(jiu)自(zi)行(xing)(xing)(xing)(xing)車(che)來說純(chun)人(ren)力(li)踩踏騎(qi)行(xing)(xing)(xing)(xing)功(gong)(gong)能是(shi)其(qi)本質屬性(xing)(xing)；就(jiu)輕便(bian)電動(dong)(dong)(dong)(dong)(dong)摩托車(che)來說，純(chun)電動(dong)(dong)(dong)(dong)(dong)功(gong)(gong)能是(shi)其(qi)本質屬性(xing)(xing)；那(nei)么什(shen)么才是(shi)電動(dong)(dong)(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)車(che)的(de)(de)本質屬性(xing)(xing)呢，能夠(gou)實現人(ren)力(li)和(he)電動(dong)(dong)(dong)(dong)(dong)力(li)協同工(gong)作的(de)(de)助(zhu)(zhu)力(li)騎(qi)行(xing)(xing)(xing)(xing)功(gong)(gong)能就(jiu)是(shi)電動(dong)(dong)(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)車(che)的(de)(de)本質屬性(xing)(xing)。助(zhu)(zhu)力(li)騎(qi)行(xing)(xing)(xing)(xing)是(shi)自(zi)行(xing)(xing)(xing)(xing)車(che)向電動(dong)(dong)(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)車(che)這一更高層次產品演化的(de)(de)區別和(he)標志，是(shi)電動(dong)(dong)(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)車(che)的(de)(de)靈(ling)魂。那(nei)種(zhong)在電動(dong)(dong)(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)車(che)上(shang)把人(ren)力(li)腳(jiao)踏功(gong)(gong)能和(he)純(chun)電動(dong)(dong)(dong)(dong)(dong)功(gong)(gong)能相互(hu)孤(gu)立的(de)(de)設計(ji)方(fang)案只能制造出沒有(you)靈(ling)魂的(de)(de)電動(dong)(dong)(dong)(dong)(dong)自(zi)行(xing)(xing)(xing)(xing)車(che)軀殼。

    什(shen)么(me)是(shi)(shi)設計電動自行(xing)車的第(di)一要(yao)素？電動自行(xing)車的設計要(yao)求有：安全(quan)，便于規(gui)模化生產，時尚美觀，舒(shu)適便捷，穩定(ding)性，維修便利等，在這些因素中誰(shui)(shui)是(shi)(shi)最重要(yao)的，誰(shui)(shui)是(shi)(shi)次(ci)要(yao)的，誰(shui)(shui)是(shi)(shi)應當兼顧考(kao)慮的；它(ta)們之間又是(shi)(shi)一種什(shen)么(me)樣的關系？

    電動(dong)自(zi)行(xing)車(che)作為一(yi)(yi)種(zhong)交通(tong)工具來說，保護消費者在(zai)使用過程中的(de)(de)(de)(de)人身和(he)財產(chan)安全無疑是最(zui)(zui)重(zhong)要的(de)(de)(de)(de)。然而目前的(de)(de)(de)(de)市場上(shang)(shang)的(de)(de)(de)(de)超(chao)過 70%電動(dong)自(zi)行(xing)車(che)由于使用了速度傳感器和(he)自(zi)動(dong)定速功能（美其名曰(yue)自(zi)動(dong)巡航）有嚴(yan)重(zhong)安全隱患的(de)(de)(de)(de)飛車(che)，這(zhe)實在(zai)電動(dong)自(zi)行(xing)車(che)行(xing)業的(de)(de)(de)(de)最(zui)(zui)大悲哀！在(zai)電動(dong)自(zi)行(xing)車(che)設計(ji)要素的(de)(de)(de)(de)排列關系應當是：安全第一(yi)(yi)；穩定性其次(ci)；舒適(shi)便捷再次(ci)；便于規模化生產(chan)和(he)維修便利(li)是一(yi)(yi)對對稱的(de)(de)(de)(de)問題；在(zai)以上(shang)(shang)的(de)(de)(de)(de)基礎上(shang)(shang)才有資格談時(shi)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(he)金<25KG，碳鋼(gang)<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)行車(che)(che)(che)(che)來說純(chun)(chun)人力(li)(li)踩(cai)踏騎行功(gong)能(neng)是(shi)其本質(zhi)(zhi)(zhi)屬(shu)(shu)(shu)性(xing)；就輕便(bian)電動(dong)摩托(tuo)車(che)(che)(che)(che)來說，純(chun)(chun)電動(dong)功(gong)能(neng)是(shi)其本質(zhi)(zhi)(zhi)屬(shu)(shu)(shu)性(xing)；那(nei)么(me)什么(me)才是(shi)電動(dong)自(zi)行車(che)(che)(che)(che)的(de)本質(zhi)(zhi)(zhi)屬(shu)(shu)(shu)性(xing)呢，融合純(chun)(chun)人力(li)(li)踩(cai)踏功(gong)能(neng)和純(chun)(chun)電動(dong)功(gong)能(neng)的(de)助力(li)(li)功(gong)能(neng)是(shi)電動(dong)自(zi)行車(che)(che)(che)(che)的(de)本質(zhi)(zhi)(zhi)屬(shu)(shu)(shu)性(xing)，是(shi)電動(dong)自(zi)行車(che)(che)(che)(che)區別于自(zi)行車(che)(che)(che)(che)和輕便(bian)摩托(tuo)車(che)(che)(che)(che)的(de)唯(wei)一標志。搞清了這個(ge)問題，才不致(zhi)于生產出(chu)與自(zi)行車(che)(che)(che)(che)沒有什么(me)關(guan)系，讓交警(jing)分不出(chu)來是(shi)電動(dong)自(zi)行車(che)(che)(che)(che)還是(shi)摩托(tuo)車(che)(che)(che)(che)的(de)畸形產品來。