無線充電是什么

無線充電器是指不用傳統的(de)(de)充(chong)(chong)電(dian)(dian)電(dian)(dian)源線(xian)(xian)連(lian)接到需(xu)要充(chong)(chong)電(dian)(dian)的(de)(de)終(zhong)端(duan)設(she)備(bei)上的(de)(de)充(chong)(chong)電(dian)(dian)器，采用了(le)最新的(de)(de)無線(xian)(xian)充(chong)(chong)電(dian)(dian)技術，無線(xian)(xian)充(chong)(chong)電(dian)(dian)技術在 2007 年獲得(de)了(le) 20 項專利，多種(zhong)設(she)備(bei)可以(yi)使(shi)用一臺充(chong)(chong)電(dian)(dian)基(ji)站，手(shou)機、MP3 播放器、電(dian)(dian)動工具和其他的(de)(de)電(dian)(dian)源適配器的(de)(de)有線(xian)(xian)充(chong)(chong)電(dian)(dian)情況將不會存在了(le)。通過使(shi)用線(xian)(xian)圈之間產生(sheng)的(de)(de)磁場，神奇的(de)(de)傳輸(shu)電(dian)(dian)能，電(dian)(dian)感(gan)耦(ou)合技術將會成為連(lian)接充(chong)(chong)電(dian)(dian)基(ji)站和設(she)備(bei)的(de)(de)橋(qiao)梁。

該圖片由注冊用戶"知識君"提供，版權聲明反饋

當前的(de)(de)(de)大(da)部(bu)分充(chong)(chong)電(dian)(dian)(dian)器，例如(ru)iPad 和iPhone ，都通(tong)(tong)過金屬(shu)電(dian)(dian)(dian)線直接(jie)接(jie)觸(chu)的(de)(de)(de)方式，給(gei)設備(bei)內(nei)置(zhi)電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)。無線充(chong)(chong)電(dian)(dian)(dian)技術(shu)的(de)(de)(de)優勢在于(yu)便捷性和通(tong)(tong)用性。缺點(dian)就是效率低和只能(neng)提(ti)供(gong)電(dian)(dian)(dian)能(neng)。而Apple 的(de)(de)(de)Dock 連接(jie)器不僅僅提(ti)供(gong)電(dian)(dian)(dian)能(neng)，同(tong)時(shi)還能(neng)把音(yin)頻和視頻文件通(tong)(tong)過USB 接(jie)口(kou)同(tong)步(bu)到設備(bei)上。不過，無線充(chong)(chong)電(dian)(dian)(dian)技術(shu)還是會(hui)(hui)給(gei) WiFi 和電(dian)(dian)(dian)池技術(shu)帶(dai)來進步(bu)的(de)(de)(de)。對于(yu)不需(xu)要數據傳輸的(de)(de)(de)設備(bei)來說，這(zhe)一新技術(shu)將會(hui)(hui)大(da)大(da)減少用戶所(suo)需(xu)各種(zhong)充(chong)(chong)電(dian)(dian)(dian)器的(de)(de)(de)數量。另外，通(tong)(tong)過采(cai)用無線充(chong)(chong)電(dian)(dian)(dian)技術(shu)，公共移動設備(bei)充(chong)(chong)電(dian)(dian)(dian)站將會(hui)(hui)有(you)可能(neng)成為現實。

手機無線充電原理是什么

1、電磁感應式充電

這種方案是在(zai)目前為(wei)止應用最多的方案，是利用供電方（充電座）和(he)受(shou)電方（手機）雙方產生的感(gan)應磁通量(liang)來(lai)進行電力傳輸，這種的電路(lu)結構在(zai)比(bi)較其他兩種來(lai)首相對簡(jian)單，成本(ben)低(di)。但是高效率(lv)也(ye)帶(dai)來(lai)了(le)不便，就是傳輸的距(ju)離較短，受(shou)擺放位(wei)置影響。

2、磁共振傳輸

這是(shi)(shi)目前正在研(yan)究的(de)一種(zhong)(zhong)無(wu)(wu)線充電方案，但(dan)是(shi)(shi)至(zhi)今無(wu)(wu)法(fa)實現商用，這種(zhong)(zhong)是(shi)(shi)在其兩端(duan)的(de)諧(xie)振器(qi)產生(sheng)磁場(chang)共振，來(lai)進行電力傳輸，簡單來(lai)說就是(shi)(shi)在一個頻率(lv)上震動，他們就能彼此交換能量，這個的(de)優點是(shi)(shi)傳輸距離遠，但(dan)是(shi)(shi)效率(lv)低，這也是(shi)(shi)為什(shen)么無(wu)(wu)法(fa)推廣(guang)的(de)的(de)原因之(zhi)一。

3、無線電波式充電

這種(zhong)方(fang)案(an)在(zai)(zai)現在(zai)(zai)來說(shuo)是較為成熟的一種(zhong)方(fang)案(an)，由(you)微波發射裝(zhuang)(zhuang)(zhuang)置和接收(shou)(shou)裝(zhuang)(zhuang)(zhuang)置組成，他可以感應到由(you)墻壁(bi)彈回的無(wu)線電(dian)波能(neng)(neng)量，能(neng)(neng)夠調(diao)整(zheng)電(dian)壓，。這種(zhong)方(fang)案(an)較為方(fang)便(bian)，只需在(zai)(zai)墻身(shen)插頭安裝(zhuang)(zhuang)(zhuang)一個發射器，接收(shou)(shou)方(fang)安裝(zhuang)(zhuang)(zhuang)一個接收(shou)(shou)器即可。

4、電場耦合式充電

電(dian)場耦合(he)式是(shi)通過耦合(he)兩(liang)組非對稱偶極子而產生的感(gan)應電(dian)場來傳(chuan)輸電(dian)力。這種充電(dian)方式適(shi)合(he)短(duan)距離(li)充電(dian)，但是(shi)他的功率還(huan)小而且(qie)需要大機器的設備。

無線充電特點

1、從理(li)論(lun)來說(shuo)，無(wu)(wu)(wu)線(xian)(xian)充電(dian)(dian)技(ji)術(shu)(shu)(shu)對(dui)人(ren)(ren)體(ti)安全無(wu)(wu)(wu)害處，無(wu)(wu)(wu)線(xian)(xian)充電(dian)(dian)使用(yong)的共(gong)(gong)(gong)振原理(li)是(shi)磁場(chang)共(gong)(gong)(gong)振，只在以(yi)同(tong)一頻率共(gong)(gong)(gong)振的線(xian)(xian)圈(quan)之間傳輸，而(er)其(qi)(qi)他(ta)裝(zhuang)置無(wu)(wu)(wu)法接受波段，另(ling)外，無(wu)(wu)(wu)線(xian)(xian)充電(dian)(dian)技(ji)術(shu)(shu)(shu)使用(yong)的磁場(chang)本(ben)身就是(shi)對(dui)人(ren)(ren)體(ti)無(wu)(wu)(wu)害的。但無(wu)(wu)(wu)線(xian)(xian)充電(dian)(dian)技(ji)術(shu)(shu)(shu)畢竟是(shi)新(xin)型(xing)的充電(dian)(dian)技(ji)術(shu)(shu)(shu)，以(yi)邁源科(ke)技(ji)的無(wu)(wu)(wu)線(xian)(xian)充電(dian)(dian)器來說(shuo)，很(hen)多人(ren)(ren)都會擔憂無(wu)(wu)(wu)線(xian)(xian)充電(dian)(dian)技(ji)術(shu)(shu)(shu)會像當(dang)初Wi-Fi和手機天線(xian)(xian)桿(gan)剛出(chu)現(xian)一樣，其(qi)(qi)實(shi)技(ji)術(shu)(shu)(shu)本(ben)身是(shi)無(wu)(wu)(wu)害的。

2、無線充(chong)電(dian)技術利用磁共振(zhen)在充(chong)電(dian)器(qi)與設備之間的電(dian)場和磁場中(zhong)傳(chuan)輸電(dian)能，線圈(quan)和電(dian)容器(qi)則(ze)在充(chong)電(dian)器(qi)與設備之間形成(cheng)共振(zhen)。

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(chong)電(dian)區以及(ji)針對(dui)電(dian)腦芯片(pian)的電(dian)量傳輸(shu)。采用(yong)這項(xiang)技術研制的充(chong)電(dian)系統所需要的充(chong)電(dian)時間只有當前(qian)的一百五(wu)十(shi)分之一。

4、轉(zhuan)化(hua)率(lv)一直(zhi)是(shi)很多人擔心(xin)的問題，麻省理工學院通過研究表(biao)明(ming)，無線(xian)(xian)充(chong)電(dian)(dian)技術的損耗比(bi)起有線(xian)(xian)充(chong)電(dian)(dian)技術來說更低。無線(xian)(xian)充(chong)電(dian)(dian)轉(zhuan)化(hua)率(lv)比(bi)起有線(xian)(xian)要高(gao)幾個百分點(dian)。高(gao)轉(zhuan)化(hua)，也是(shi)無線(xian)(xian)充(chong)電(dian)(dian)器(qi)得以(yi)在全球進行(xing)應(ying)用的關鍵(jian)因素(su)。但無線(xian)(xian)充(chong)電(dian)(dian)技術也受到距離的限制，未來發(fa)展，必然需要解(jie)決遠距離傳送對于波段和磁場范圍的精準定(ding)位(wei)問題。

5、核心(xin)芯片是無線充(chong)電技術在(zai)產品應用的(de)難(nan)點之一(yi)。精準(zhun)輻射范圍控制(zhi)，磁(ci)場(chang)頻率大小，其(qi)它(ta)控制(zhi)等都是由芯片實現。