無線充電是什么
無線充電器是指不用傳統的(de)(de)(de)充(chong)電(dian)(dian)電(dian)(dian)源(yuan)線(xian)連接(jie)到需要充(chong)電(dian)(dian)的(de)(de)(de)終端設備上的(de)(de)(de)充(chong)電(dian)(dian)器(qi),采用了最新的(de)(de)(de)無(wu)線(xian)充(chong)電(dian)(dian)技(ji)術,無(wu)線(xian)充(chong)電(dian)(dian)技(ji)術在(zai) 2007 年獲得了 20 項專利(li),多種(zhong)設備可以使用一臺充(chong)電(dian)(dian)基(ji)站(zhan),手機、MP3 播放器(qi)、電(dian)(dian)動工具(ju)和其他的(de)(de)(de)電(dian)(dian)源(yuan)適(shi)配器(qi)的(de)(de)(de)有線(xian)充(chong)電(dian)(dian)情況(kuang)將(jiang)不會存在(zai)了。通過使用線(xian)圈之間產(chan)生的(de)(de)(de)磁場,神奇(qi)的(de)(de)(de)傳輸電(dian)(dian)能,電(dian)(dian)感耦合技(ji)術將(jiang)會成為連接(jie)充(chong)電(dian)(dian)基(ji)站(zhan)和設備的(de)(de)(de)橋梁。
當前的(de)(de)(de)大部分(fen)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi),例如iPad 和(he)(he)iPhone ,都通(tong)過(guo)金屬電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)直(zhi)接接觸的(de)(de)(de)方式,給設備(bei)內置電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)。無線(xian)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)技術(shu)(shu)的(de)(de)(de)優(you)勢在于便捷性和(he)(he)通(tong)用(yong)性。缺點就是效率低(di)和(he)(he)只能(neng)(neng)(neng)提(ti)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng)。而Apple 的(de)(de)(de)Dock 連接器(qi)不僅僅提(ti)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)(neng),同(tong)時還能(neng)(neng)(neng)把(ba)音頻(pin)和(he)(he)視頻(pin)文件(jian)通(tong)過(guo)USB 接口同(tong)步到設備(bei)上(shang)。不過(guo),無線(xian)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)技術(shu)(shu)還是會(hui)給 WiFi 和(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)技術(shu)(shu)帶來(lai)進步的(de)(de)(de)。對(dui)于不需(xu)要數據傳輸的(de)(de)(de)設備(bei)來(lai)說(shuo),這(zhe)一新技術(shu)(shu)將(jiang)會(hui)大大減少(shao)用(yong)戶所需(xu)各種充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)的(de)(de)(de)數量。另(ling)外,通(tong)過(guo)采(cai)用(yong)無線(xian)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)技術(shu)(shu),公(gong)共(gong)移動設備(bei)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)站(zhan)將(jiang)會(hui)有(you)可能(neng)(neng)(neng)成為(wei)現(xian)實。
手機無線充電原理是什么
1、電磁感應式充電
這種(zhong)方(fang)(fang)案是(shi)在(zai)目前為止應用(yong)最多的(de)(de)方(fang)(fang)案,是(shi)利用(yong)供(gong)電(dian)方(fang)(fang)(充電(dian)座(zuo))和(he)受(shou)電(dian)方(fang)(fang)(手(shou)機)雙方(fang)(fang)產生的(de)(de)感應磁通量來(lai)進行(xing)電(dian)力(li)傳輸,這種(zhong)的(de)(de)電(dian)路結構在(zai)比較其他兩種(zhong)來(lai)首相對簡(jian)單,成本低。但是(shi)高效率也帶(dai)來(lai)了不(bu)便,就(jiu)是(shi)傳輸的(de)(de)距離較短,受(shou)擺放(fang)位置影(ying)響。
2、磁共振傳輸
這(zhe)是目前(qian)正在研究的(de)一(yi)(yi)種(zhong)無(wu)線充電(dian)方案,但是至今無(wu)法實現商用,這(zhe)種(zhong)是在其兩端的(de)諧振(zhen)(zhen)器(qi)產生磁(ci)場(chang)共(gong)振(zhen)(zhen),來進行(xing)電(dian)力傳(chuan)輸,簡單來說就(jiu)(jiu)是在一(yi)(yi)個頻率(lv)上震動(dong),他們(men)就(jiu)(jiu)能(neng)彼此交換能(neng)量,這(zhe)個的(de)優點是傳(chuan)輸距離(li)遠,但是效率(lv)低,這(zhe)也是為(wei)什么無(wu)法推廣的(de)的(de)原(yuan)因之一(yi)(yi)。
3、無線電波式充電
這(zhe)種方(fang)(fang)案在(zai)現(xian)在(zai)來(lai)說是較為成熟(shu)的一種方(fang)(fang)案,由(you)微波(bo)發射(she)裝(zhuang)置和接(jie)收(shou)裝(zhuang)置組成,他可以感應到由(you)墻壁彈回的無線電(dian)(dian)波(bo)能量,能夠調整電(dian)(dian)壓,。這(zhe)種方(fang)(fang)案較為方(fang)(fang)便,只需在(zai)墻身插頭安裝(zhuang)一個發射(she)器,接(jie)收(shou)方(fang)(fang)安裝(zhuang)一個接(jie)收(shou)器即可。
4、電場耦合式充電
電(dian)場(chang)耦(ou)合(he)(he)式是通過耦(ou)合(he)(he)兩(liang)組非對稱偶(ou)極子而(er)產生(sheng)的(de)感(gan)應(ying)電(dian)場(chang)來(lai)傳輸電(dian)力(li)。這(zhe)種充電(dian)方式適合(he)(he)短距離充電(dian),但是他(ta)的(de)功(gong)率還小而(er)且需要大機器的(de)設備。
無線充電特點
1、從理(li)論來(lai)說,無(wu)(wu)線充(chong)電(dian)(dian)技(ji)術(shu)(shu)對(dui)人體(ti)安全無(wu)(wu)害(hai)(hai)(hai)處(chu),無(wu)(wu)線充(chong)電(dian)(dian)使用(yong)的共振(zhen)原理(li)是(shi)磁(ci)場共振(zhen),只在以同一頻率共振(zhen)的線圈(quan)之間(jian)傳輸,而(er)其他裝置無(wu)(wu)法接(jie)受波段,另外,無(wu)(wu)線充(chong)電(dian)(dian)技(ji)術(shu)(shu)使用(yong)的磁(ci)場本身(shen)(shen)就是(shi)對(dui)人體(ti)無(wu)(wu)害(hai)(hai)(hai)的。但無(wu)(wu)線充(chong)電(dian)(dian)技(ji)術(shu)(shu)畢竟是(shi)新型的充(chong)電(dian)(dian)技(ji)術(shu)(shu),以邁(mai)源科技(ji)的無(wu)(wu)線充(chong)電(dian)(dian)器來(lai)說,很多人都會擔憂(you)無(wu)(wu)線充(chong)電(dian)(dian)技(ji)術(shu)(shu)會像當(dang)初(chu)Wi-Fi和手機天線桿剛出現一樣,其實技(ji)術(shu)(shu)本身(shen)(shen)是(shi)無(wu)(wu)害(hai)(hai)(hai)的。
2、無線(xian)充電(dian)技術利用磁(ci)(ci)共振在充電(dian)器(qi)與設備(bei)之(zhi)(zhi)間的電(dian)場(chang)和磁(ci)(ci)場(chang)中傳輸電(dian)能,線(xian)圈和電(dian)容器(qi)則(ze)在充電(dian)器(qi)與設備(bei)之(zhi)(zhi)間形成共振。
3、這一系統可以在未來得到廣泛應用,例如針對電動汽車的充電區以及針對電腦芯片的電量傳輸。采用這項技術研制的充電系(xi)統所需要(yao)的充電時(shi)間只有(you)當前的一(yi)百(bai)五十分(fen)之(zhi)一(yi)。
4、轉化率一直是很(hen)多人擔(dan)心的(de)問(wen)題,麻省(sheng)理工(gong)學院通過研究表(biao)明,無(wu)(wu)線(xian)(xian)(xian)充電技(ji)術(shu)的(de)損耗比(bi)起有線(xian)(xian)(xian)充電技(ji)術(shu)來說更低。無(wu)(wu)線(xian)(xian)(xian)充電轉化率比(bi)起有線(xian)(xian)(xian)要高幾個百分點。高轉化,也是無(wu)(wu)線(xian)(xian)(xian)充電器得(de)以(yi)在(zai)全球進行(xing)應用的(de)關鍵因素。但無(wu)(wu)線(xian)(xian)(xian)充電技(ji)術(shu)也受到距離的(de)限(xian)制,未(wei)來發展,必然需要解決遠距離傳送對于波(bo)段和磁場范圍的(de)精準定位問(wen)題。
5、核(he)心(xin)芯片是無線充電技(ji)術在產品(pin)應用(yong)的難(nan)點之一(yi)。精準輻射范圍控制,磁場頻率大小,其它控制等都是由芯片實現。