實現無(wu)線(xian)充(chong)電(dian)(dian)(dian)(dian)的技術原理有四(si)種類型(xing)，電(dian)(dian)(dian)(dian)磁感應式(shi)無(wu)線(xian)充(chong)電(dian)(dian)(dian)(dian)、電(dian)(dian)(dian)(dian)磁諧(xie)振(zhen)式(shi)無(wu)線(xian)充(chong)電(dian)(dian)(dian)(dian)、電(dian)(dian)(dian)(dian)磁輻射式(shi)無(wu)線(xian)充(chong)電(dian)(dian)(dian)(dian)、電(dian)(dian)(dian)(dian)場耦合式(shi)無(wu)線(xian)充(chong)電(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)磁感應式(shi)是目前最常用的無(wu)線(xian)電(dian)(dian)(dian)(dian)能(neng)傳輸方式(shi)。

電磁感應式

電磁感應式無線充電原理是通過線圈耦合進行能量傳遞，在發送端與接收端分別設置一個線圈，發送端連接高頻交變電流，從而產生電磁信號，接收端通過線圈將接收到的電磁信號轉變成電流，電流經過整流、穩壓等電路處理后給設備提供電能。電磁感應原理進行充電的設備，類似于變壓器，在發送和接收兩端各有一個線圈，發送端線圈連接有線電源產生電磁信號，接收端線圈感應發送端的電磁信號從而產生電流給用電設備。電流流過線圈會產生磁場。其他未通電的線圈靠近磁場就會產生電流。無線充電就應用了這種物理現象進行充電。電磁感應式無線充電主要應用于手機等小型設備的充電中，具備轉化效率高，充電設備小的優點。（櫻花草視頻:電磁感應式手機無線充電方案）

電磁感應式無線充電

電磁諧振式

電(dian)磁(ci)諧振(zhen)式無(wu)線(xian)(xian)充(chong)(chong)電(dian)利用的(de)是波共(gong)(gong)振(zhen)的(de)原理。排列(lie)在(zai)一個(ge)磁(ci)場中的(de)有(you)相同振(zhen)動頻率的(de)線(xian)(xian)圈(quan)，由于其振(zhen)動頻率特(te)性相同也可以實現(xian)能(neng)量(liang)從一個(ge)線(xian)(xian)圈(quan)向另一個(ge)線(xian)(xian)圈(quan)的(de)電(dian)能(neng)傳輸。電(dian)磁(ci)諧振(zhen)無(wu)線(xian)(xian)充(chong)(chong)電(dian)裝置主要(yao)有(you)能(neng)量(liang)發(fa)送盒接收裝置組(zu)成，講(jiang)發(fa)送盒接收裝置調成相同的(de)特(te)定頻率，二者形成共(gong)(gong)振(zhen)，從而實現(xian)能(neng)量(liang)傳遞(di)，電(dian)磁(ci)諧振(zhen)式無(wu)線(xian)(xian)充(chong)(chong)電(dian)可以實現(xian)大(da)功率充(chong)(chong)電(dian)需求(qiu)，能(neng)進行相對較遠的(de)無(wu)線(xian)(xian)充(chong)(chong)電(dian)。

電磁共振式無線充電原理

電磁輻射式

電(dian)(dian)磁(ci)輻(fu)射式(shi)無線充電(dian)(dian)技術原理是利用電(dian)(dian)磁(ci)波(bo)(bo)(bo)(bo)傳遞能(neng)量的(de)特(te)點，將電(dian)(dian)磁(ci)波(bo)(bo)(bo)(bo)接(jie)(jie)收并轉(zhuan)化為電(dian)(dian)能(neng)給設備充電(dian)(dian)的(de)方(fang)式(shi)，由微(wei)(wei)波(bo)(bo)(bo)(bo)發(fa)射裝置(zhi)(zhi)和微(wei)(wei)波(bo)(bo)(bo)(bo)接(jie)(jie)收裝置(zhi)(zhi)組成，微(wei)(wei)波(bo)(bo)(bo)(bo)發(fa)射裝置(zhi)(zhi)中有一個微(wei)(wei)波(bo)(bo)(bo)(bo)發(fa)射源，微(wei)(wei)波(bo)(bo)(bo)(bo)源內裝有磁(ci)控管，發(fa)射天(tian)線將電(dian)(dian)能(neng)以電(dian)(dian)磁(ci)波(bo)(bo)(bo)(bo)的(de)形(xing)式(shi)傳遞到接(jie)(jie)收天(tian)線，通過接(jie)(jie)收設備進行(xing)收集和轉(zhuan)化為設備充電(dian)(dian)。電(dian)(dian)磁(ci)輻(fu)射式(shi)充電(dian)(dian)可(ke)以實(shi)現更(geng)遠距離的(de)無線充電(dian)(dian)，充電(dian)(dian)設備也可(ke)以不(bu)受特(te)定(ding)位置(zhi)(zhi)限制。

電磁輻射式無線充電原理圖

電場耦合式

電(dian)(dian)場(chang)耦(ou)合(he)式無線充(chong)電(dian)(dian)技術原(yuan)理是通(tong)過產生的感(gan)應電(dian)(dian)場(chang)實現電(dian)(dian)能(neng)從發(fa)(fa)送端向接收端轉移，垂(chui)直(zhi)方向兩(liang)組非(fei)對稱偶極子通(tong)過耦(ou)合(he)作(zuo)用(yong)能(neng)夠產生感(gan)應電(dian)(dian)場(chang)，感(gan)應電(dian)(dian)場(chang)能(neng)夠將電(dian)(dian)能(neng)從發(fa)(fa)送端轉移到接收端，充(chong)電(dian)(dian)效率高，損耗(hao)小(xiao)，發(fa)(fa)熱量低，不受(shou)特定位置限制(zhi)。

電場耦合式無線充電原理

幾種無線充電方式的比較