鋰電池電動自行車的設計由來
雖然(ran)早(zao)在 1999年《 GB17761-1999電(dian)動(dong)(dong)(dong)自(zi)行車(che)(che)(che)通用技(ji)術條件(jian)》對(dui)電(dian)動(dong)(dong)(dong)自(zi)行車(che)(che)(che)有(you)過(guo)名確的(de)(de)(de)定義,也有(you)著詳盡的(de)(de)(de)規范,然(ran)而實際的(de)(de)(de)現狀是(shi)絕大多(duo)數電(dian)動(dong)(dong)(dong)自(zi)行車(che)(che)(che)突破了(le)這(zhe)個(ge)限制(zhi),經過(guo) 10年演變(bian)成(cheng)了(le)與這(zhe)個(ge)國家(jia)標準幾(ji)乎沒有(you)什么關系的(de)(de)(de)另(ling)外一(yi)種產品。在這(zhe)里,單從(cong)技(ji)術的(de)(de)(de)角(jiao)度,笨重(zhong)的(de)(de)(de)鉛酸電(dian)池,電(dian)動(dong)(dong)(dong)自(zi)行車(che)(che)(che)和(he)電(dian)動(dong)(dong)(dong)摩托車(che)(che)(che)概(gai)念的(de)(de)(de)混淆是(shi)這(zhe)個(ge)演變(bian)的(de)(de)(de)最主要的(de)(de)(de)罪魁禍首(shou)。然(ran)而在這(zhe)個(ge)演變(bian)的(de)(de)(de)另(ling)外一(yi)個(ge)結果是(shi),由于鉛酸電(dian)池較短的(de)(de)(de)壽命,由于電(dian)動(dong)(dong)(dong)自(zi)行車(che)(che)(che)的(de)(de)(de)粗制(zhi)濫造,電(dian)動(dong)(dong)(dong)自(zi)行車(che)(che)(che)成(cheng)為一(yi)個(ge)沒有(you)任何安全,劣質(zhi)短命產品代名詞(ci)。
就在(zai)這個時候(hou),用于電(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)車(che)(che)(che)的鋰電(dian)(dian)池日漸成熟了(le)(le)(le),似乎遲(chi)到了(le)(le)(le) 10年(nian)。這個時候(hou),普通的消(xiao)費(fei)者(zhe)已經(jing)(jing)很(hen)難分清合格電(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)車(che)(che)(che)和(he)電(dian)(dian)動(dong)(dong)摩托車(che)(che)(che)(含(han)電(dian)(dian)動(dong)(dong)摩托車(che)(che)(che)和(he)輕(qing)便電(dian)(dian)動(dong)(dong)摩托車(che)(che)(che))的區(qu)別了(le)(le)(le);這個時候(hou),超(chao)(chao)標(biao)(biao)的電(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)車(che)(che)(che)已經(jing)(jing)在(zai)中(zhong)國(guo)市場(chang)飽和(he)了(le)(le)(le);這個時候(hou),超(chao)(chao)標(biao)(biao)的電(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)車(che)(che)(che)消(xiao)費(fei)者(zhe)和(he)超(chao)(chao)標(biao)(biao)電(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)車(che)(che)(che)生產企業已經(jing)(jing)敢于和(he)制定電(dian)(dian)動(dong)(dong)自(zi)(zi)行(xing)車(che)(che)(che)標(biao)(biao)準的國(guo)家標(biao)(biao)準化(hua)委員會叫板(ban)了(le)(le)(le)。
然(ran)而,然(ran)而鋰電池(chi)必(bi)然(ran)和(he)電動(dong)自行(xing)車有一(yi)個完(wan)美的(de)結合,這是由(you)于鋰電池(chi)獨有的(de)輕便和(he)超長壽命的(de)本質屬(shu)性決(jue)定的(de),鋰電池(chi)必(bi)然(ran)為電動(dong)自行(xing)車插上騰飛的(de)翅膀。
在電動(dong)自(zi)行車行業(ye)已經迎來第二次生命的(de)今(jin)天,為了能讓(rang)電動(dong)自(zi)行車行業(ye)有一個健康(kang)的(de)的(de)發展(zhan),我們有責(ze)任來思考(kao)和回答一些最基礎問題。當然這些問題都(dou)將圍繞著(zhu)電動(dong)自(zi)行車的(de)設計這個載體(ti)展(zhan)開。
談到(dao)電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)車(che)的(de)(de)設計,我(wo)們首先要(yao)(yao)搞清一(yi)些基(ji)本(ben)的(de)(de)問(wen)題。什(shen)么(me)是(shi)電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)?電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)的(de)(de)工業基(ji)礎是(shi)什(shen)么(me)?什(shen)么(me)是(shi)電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)的(de)(de)靈魂?電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)有三(san)種騎(qi)行(xing)(xing)狀態(tai),即純人力(li)(li)騎(qi)行(xing)(xing),純電(dian)(dian)(dian)動(dong)(dong)(dong)騎(qi)行(xing)(xing),電(dian)(dian)(dian)動(dong)(dong)(dong)力(li)(li)和(he)(he)人力(li)(li)騎(qi)行(xing)(xing)混合(he)(he)。三(san)者的(de)(de)關(guan)系是(shi)什(shen)么(me),電(dian)(dian)(dian)動(dong)(dong)(dong)力(li)(li)和(he)(he)人力(li)(li)騎(qi)行(xing)(xing)混合(he)(he)是(shi)一(yi)種什(shen)么(me)樣的(de)(de)混合(he)(he)?什(shen)么(me)是(shi)設計電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)的(de)(de)第一(yi)要(yao)(yao)素(su)?電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)的(de)(de)設計要(yao)(yao)求有:安全,時尚美觀(guan),舒(shu)適便(bian)捷,便(bian)于規(gui)模化(hua)生產,長(chang)期穩定(ding)性,維修便(bian)利等,在這些因素(su)中誰是(shi)最重要(yao)(yao)的(de)(de),誰是(shi)次要(yao)(yao)的(de)(de),誰是(shi)應當(dang)兼(jian)顧考慮的(de)(de);它們之間(jian)又(you)是(shi)一(yi)種什(shen)么(me)樣的(de)(de)關(guan)系?電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)和(he)(he)電(dian)(dian)(dian)動(dong)(dong)(dong)摩托及自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)的(de)(de)本(ben)質(zhi)區別(bie)是(shi)什(shen)么(me)?電(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)(xing)車(che)的(de)(de)理想(xiang)模型是(shi)什(shen)么(me)樣的(de)(de)?
第一(yi),什么事電(dian)動自(zi)行(xing)車?
國標委員會《 GB17761-1999電動自行(xing)(xing)(xing)車(che)通用技術條(tiao)件》的定(ding)義(yi)是:電動自行(xing)(xing)(xing)車(che)是以蓄電池作為輔助能源,具(ju)有兩個(ge)車(che)輪,能夠實現人力騎(qi)行(xing)(xing)(xing),電動或(huo)電動助力騎(qi)行(xing)(xing)(xing)的特種自行(xing)(xing)(xing)車(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(neng)夠實現電動力或助(zhu)力騎行。
這個解釋很好(hao)的(de)(de)回(hui)答(da)了電(dian)(dian)動自(zi)行(xing)(xing)車(che)是(shi)以蓄電(dian)(dian)池為輔助(zhu)能源,電(dian)(dian)動自(zi)行(xing)(xing)車(che)是(shi)自(zi)行(xing)(xing)車(che)的(de)(de)一種(zhong),屬(shu)于特種(zhong)自(zi)行(xing)(xing)車(che)。但是(shi)沒(mei)有說明(ming)人力騎行(xing)(xing),電(dian)(dian)動或助(zhu)力騎行(xing)(xing)三(san)者的(de)(de)辯證關系,沒(mei)有很好(hao)的(de)(de)回(hui)答(da)電(dian)(dian)動自(zi)行(xing)(xing)車(che)與自(zi)行(xing)(xing)車(che)和輕便電(dian)(dian)動摩托的(de)(de)區別的(de)(de)本質屬(shu)性是(shi)什么。我覺(jue)得這樣解釋更能說明(ming)電(dian)(dian)動自(zi)行(xing)(xing)車(che)的(de)(de)本質屬(shu)性即:電(dian)(dian)動自(zi)行(xing)(xing)是(shi)一種(zhong)在自(zi)行(xing)(xing)車(che)的(de)(de)基礎上(shang)融入(ru)電(dian)(dian)動功能,并且能夠實現人力和電(dian)(dian)動力有機協同工作(zuo)的(de)(de)一種(zhong)輕便特種(zhong)自(zi)行(xing)(xing)車(che)。
第二,電動自行車的工業基礎是什么?
既然電(dian)動(dong)自(zi)(zi)行(xing)(xing)車(che)是自(zi)(zi)行(xing)(xing)車(che)的一(yi)種(zhong),是一(yi)種(zhong)特殊的自(zi)(zi)行(xing)(xing)車(che),那么電(dian)動(dong)自(zi)(zi)行(xing)(xing)車(che)的工業基(ji)(ji)礎(chu)(chu)就是自(zi)(zi)行(xing)(xing)車(che)。電(dian)動(dong)自(zi)(zi)行(xing)(xing)車(che)其他部件的和系統的設計都應該圍繞這(zhe)個工業基(ji)(ji)礎(chu)(chu)展(zhan)開。偏(pian)離(li)了這(zhe)個基(ji)(ji)礎(chu)(chu),就會搞出一(yi)些四不象(xiang)的怪胎。像摩托一(yi)樣超標電(dian)動(dong)車(che)就是一(yi)個典型的例子。
第三,什么是電動自行車的靈魂?
電動自行車有三種(zhong)騎行狀態,即純人(ren)力騎行,純電動騎行,電動助力。
三者的(de)關系是(shi)(shi)什(shen)么,電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)力(li)(li)(li)(li)和人(ren)力(li)(li)(li)(li)騎(qi)行(xing)混合(he)是(shi)(shi)一(yi)種什(shen)么樣的(de)混合(he)?純人(ren)力(li)(li)(li)(li)踩踏騎(qi)行(xing)是(shi)(shi)基礎,電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車不(bu)(bu)可避免(mian)的(de)會出現(xian)路上電(dian)(dian)(dian)(dian)量用盡的(de)時(shi)(shi)候,如(ru)果沒有人(ren)力(li)(li)(li)(li)騎(qi)行(xing)功(gong)(gong)能拋(pao)錨(mao)在路上是(shi)(shi)一(yi)件非常討(tao)厭的(de)事情,同時(shi)(shi)沒有騎(qi)行(xing)功(gong)(gong)能電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)兩輪(lun)車也不(bu)(bu)能成為電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車。但是(shi)(shi)現(xian)在的(de)問題是(shi)(shi)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車自(zi)從有了電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)功(gong)(gong)能之(zhi)后,騎(qi)行(xing)功(gong)(gong)能被忽視,不(bu)(bu)少電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車純人(ren)力(li)(li)(li)(li)騎(qi)行(xing)費力(li)(li)(li)(li)。實(shi)際上,如(ru)果電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車的(de)腳踏功(gong)(gong)能越費力(li)(li)(li)(li),則說明(ming)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車的(de)阻力(li)(li)(li)(li)越大(da),電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車的(de)阻力(li)(li)(li)(li)越大(da),則同樣的(de)電(dian)(dian)(dian)(dian)池容量電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)自(zi)行(xing)車的(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(zheng)車(che)結構(gou),降(jiang)(jiang)低空(kong)氣的動(dong)態阻力; 4降(jiang)(jiang)低整(zheng)車(che)重(zhong)量。
只(zhi)有(you)(you)降低了(le)電動(dong)自(zi)行(xing)車的(de)阻(zu)力,電動(dong)自(zi)行(xing)車才有(you)(you)可能有(you)(you)良好的(de)騎(qi)行(xing)能力,才能為電動(dong)自(zi)行(xing)車的(de)純電動(dong)及電動(dong)助力騎(qi)行(xing)打(da)下良好的(de)基礎。
純電動(dong)騎行(xing)(xing),毫無(wu)疑(yi)問純電動(dong)騎行(xing)(xing)是(shi)不用(yong)消耗騎行(xing)(xing)者的(de)(de)體力的(de)(de),當然在三中騎行(xing)(xing)狀態中也是(shi)最省力的(de)(de),同時也是(shi)最耗電的(de)(de)一(yi)種騎行(xing)(xing)方(fang)式。但是(shi)長期純電動(dong)騎行(xing)(xing)會導致類似“摩托(tuo)車綜(zong)合癥(zheng)”影響健(jian)康。
助(zhu)力(li)(li)騎行(xing),目前(qian)的電動自行(xing)車助(zhu)力(li)(li)方式(shi)有真假兩種,使用力(li)(li)矩傳(chuan)感(gan)器(qi)智能助(zhu)力(li)(li)騎行(xing),使用速(su)度傳(chuan)感(gan)器(qi)助(zhu)力(li)(li)騎行(xing)。下面就力(li)(li)矩傳(chuan)感(gan)器(qi)和速(su)度傳(chuan)感(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.安全,杜(du)絕推行輪盤(pan)和飛輪聯(lian)動導致的(de)飛車。
優點:
成本較低。
缺點:
1.成本較高;
2.技(ji)術成熟度較低。
缺點:1.完全(quan)不(bu)能(neng)實現(xian)人力和電動力的協同(tong)工作;2.騎行時掌控困難,有危(wei)險性; 3.推行時輪盤和飛輪聯動會導致飛車危(wei)險。
鑒于速度(du)傳(chuan)感(gan)器(qi)(qi)的騎行時和(he)推行時的嚴(yan)重安全(quan)(quan)隱患,完全(quan)(quan)不能實現人力(li)(li)和(he)電動力(li)(li)的協同工作,根(gen)本就不是(shi)什么助(zhu)力(li)(li)傳(chuan)感(gan)器(qi)(qi)。力(li)(li)矩助(zhu)力(li)(li)傳(chuan)感(gan)器(qi)(qi)則在安全(quan)(quan)等 5個方面有著明顯的優勢則是(shi)真正的助(zhu)力(li)(li)傳(chuan)感(gan)器(qi)(qi)。
從電(dian)(dian)動(dong)(dong)自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)的(de)三種(zhong)騎(qi)行(xing)(xing)(xing)狀態不難看出,助(zhu)力(li)(li)(li)(li)騎(qi)行(xing)(xing)(xing)兼顧了純人(ren)力(li)(li)(li)(li)踩踏(ta)騎(qi)行(xing)(xing)(xing)和(he)(he)純電(dian)(dian)動(dong)(dong)騎(qi)行(xing)(xing)(xing)的(de)優點。能(neng)(neng)(neng)夠實現(xian)人(ren)力(li)(li)(li)(li)和(he)(he)電(dian)(dian)動(dong)(dong)力(li)(li)(li)(li)力(li)(li)(li)(li)的(de)協同工作(zuo);.騎(qi)行(xing)(xing)(xing)輕松(song),有(you)益健康,變騎(qi)行(xing)(xing)(xing)為(wei)樂趣;有(you)利于挖掘(jue)人(ren)力(li)(li)(li)(li)節約電(dian)(dian)力(li)(li)(li)(li),增加續行(xing)(xing)(xing)里程。就自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)來說純人(ren)力(li)(li)(li)(li)踩踏(ta)騎(qi)行(xing)(xing)(xing)功能(neng)(neng)(neng)是其(qi)本(ben)質屬性(xing)(xing);就輕便電(dian)(dian)動(dong)(dong)摩托車(che)(che)(che)(che)(che)(che)(che)來說,純電(dian)(dian)動(dong)(dong)功能(neng)(neng)(neng)是其(qi)本(ben)質屬性(xing)(xing);那么什么才是電(dian)(dian)動(dong)(dong)自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)的(de)本(ben)質屬性(xing)(xing)呢,能(neng)(neng)(neng)夠實現(xian)人(ren)力(li)(li)(li)(li)和(he)(he)電(dian)(dian)動(dong)(dong)力(li)(li)(li)(li)協同工作(zuo)的(de)助(zhu)力(li)(li)(li)(li)騎(qi)行(xing)(xing)(xing)功能(neng)(neng)(neng)就是電(dian)(dian)動(dong)(dong)自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)的(de)本(ben)質屬性(xing)(xing)。助(zhu)力(li)(li)(li)(li)騎(qi)行(xing)(xing)(xing)是自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)向電(dian)(dian)動(dong)(dong)自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)這一更(geng)高層次產品(pin)演化的(de)區別和(he)(he)標(biao)志,是電(dian)(dian)動(dong)(dong)自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)的(de)靈魂(hun)。那種(zhong)在電(dian)(dian)動(dong)(dong)自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)上(shang)把人(ren)力(li)(li)(li)(li)腳踏(ta)功能(neng)(neng)(neng)和(he)(he)純電(dian)(dian)動(dong)(dong)功能(neng)(neng)(neng)相互(hu)孤立的(de)設(she)計方(fang)案只能(neng)(neng)(neng)制造出沒有(you)靈魂(hun)的(de)電(dian)(dian)動(dong)(dong)自行(xing)(xing)(xing)車(che)(che)(che)(che)(che)(che)(che)軀殼。
什么(me)是(shi)設計電動自行車的(de)第一(yi)要(yao)素?電動自行車的(de)設計要(yao)求有:安全,便于規模化生產,時(shi)尚美觀(guan),舒適便捷,穩定性,維修便利等,在這些因素中(zhong)誰是(shi)最重(zhong)要(yao)的(de),誰是(shi)次要(yao)的(de),誰是(shi)應當兼顧考慮(lv)的(de);它(ta)們之間又是(shi)一(yi)種什么(me)樣的(de)關系?
電(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)車(che)作為一種交通(tong)工具來(lai)說,保護消(xiao)費(fei)者在(zai)使(shi)用(yong)過程中(zhong)的(de)人(ren)身和(he)財產安(an)全(quan)無(wu)疑是(shi)最重(zhong)要的(de)。然而目前的(de)市(shi)場上的(de)超(chao)過 70%電(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)車(che)由于(yu)使(shi)用(yong)了速(su)度傳感器(qi)和(he)自(zi)(zi)(zi)(zi)動(dong)(dong)定(ding)速(su)功(gong)能(美其名曰自(zi)(zi)(zi)(zi)動(dong)(dong)巡航(hang))有(you)嚴重(zhong)安(an)全(quan)隱(yin)患的(de)飛車(che),這實在(zai)電(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)車(che)行(xing)業的(de)最大悲哀!在(zai)電(dian)動(dong)(dong)自(zi)(zi)(zi)(zi)行(xing)車(che)設計要素的(de)排(pai)列關系(xi)應當是(shi):安(an)全(quan)第一;穩定(ding)性(xing)其次;舒(shu)適便捷再次;便于(yu)規模化生產和(he)維(wei)修便利是(shi)一對(dui)對(dui)稱(cheng)的(de)問(wen)題;在(zai)以上的(de)基礎上才(cai)有(you)資格談時尚美觀。
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(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(xing)(xing)(xing)車(che)來說純(chun)人(ren)力(li)踩(cai)踏騎(qi)行(xing)(xing)(xing)功能(neng)是其本(ben)質屬(shu)(shu)性;就輕便(bian)電(dian)(dian)動(dong)(dong)摩托(tuo)車(che)來說,純(chun)電(dian)(dian)動(dong)(dong)功能(neng)是其本(ben)質屬(shu)(shu)性;那么(me)(me)什(shen)(shen)么(me)(me)才是電(dian)(dian)動(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)的本(ben)質屬(shu)(shu)性呢,融合純(chun)人(ren)力(li)踩(cai)踏功能(neng)和純(chun)電(dian)(dian)動(dong)(dong)功能(neng)的助力(li)功能(neng)是電(dian)(dian)動(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)的本(ben)質屬(shu)(shu)性,是電(dian)(dian)動(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)區別(bie)于自(zi)行(xing)(xing)(xing)車(che)和輕便(bian)摩托(tuo)車(che)的唯一標志。搞清了這(zhe)個(ge)問題,才不(bu)致于生(sheng)產出與自(zi)行(xing)(xing)(xing)車(che)沒有什(shen)(shen)么(me)(me)關系,讓交警分不(bu)出來是電(dian)(dian)動(dong)(dong)自(zi)行(xing)(xing)(xing)車(che)還是摩托(tuo)車(che)的畸形產品(pin)來。