無線充電器基礎知識
無線充電器是指利用電(dian)(dian)磁(ci)波(bo)感應(ying)原(yuan)理進行充(chong)電(dian)(dian)的(de)設備,原(yuan)理類(lei)似(si)于變壓器。在發送和接收(shou)端各有一個線(xian)圈,發送端線(xian)圈連接有線(xian)電(dian)(dian)源(yuan)產生(sheng)(sheng)電(dian)(dian)磁(ci)信號,接收(shou)端線(xian)圈感應(ying)發送端的(de)電(dian)(dian)磁(ci)信號從而產生(sheng)(sheng)電(dian)(dian)流給電(dian)(dian)池(chi)充(chong)電(dian)(dian).
無線充電器
工作原理
物(wu)理學(xue)家早就知道(dao),在(zai)兩個(ge)(ge)共(gong)振頻率相同(tong)(tong)(tong)的物(wu)體之間能有效地傳輸能量(liang),而(er)不同(tong)(tong)(tong)頻率物(wu)體之間的相互(hu)作用較弱。歌唱(chang)家演唱(chang)能將裝有不同(tong)(tong)(tong)水量(liang)瓶子中的一(yi)個(ge)(ge)震碎(sui),而(er)不影響其他(ta)瓶子就是這個(ge)(ge)道(dao)理。這也好比我們蕩秋(qiu)千時,只(zhi)需坐在(zai)上面讓(rang)下垂的雙腿同(tong)(tong)(tong)步(bu)擺動就能給秋(qiu)千帶來動力一(yi)樣。
無線(xian)充(chong)電(dian)(dian)(dian)(dian)技(ji)(ji)術(shu)(shu)正是利用(yong)了(le)這(zhe)個原(yuan)理。同(tong)樣,無線(xian)充(chong)電(dian)(dian)(dian)(dian)技(ji)(ji)術(shu)(shu)也應(ying)用(yong)了(le)電(dian)(dian)(dian)(dian)磁(ci)波感應(ying)原(yuan)理,及相關的交流(liu)感應(ying)技(ji)(ji)術(shu)(shu),在發送(song)和(he)接(jie)收端用(yong)相應(ying)的線(xian)圈來(lai)發送(song)和(he)接(jie)收產(chan)生感應(ying)的交流(liu)信號(hao)來(lai)進行(xing)充(chong)電(dian)(dian)(dian)(dian)的的一(yi)項技(ji)(ji)術(shu)(shu), 用(yong)戶只需要將(jiang)充(chong)電(dian)(dian)(dian)(dian)設備(bei)放在一(yi)個“平板”上(shang)即可進行(xing)充(chong)電(dian)(dian)(dian)(dian),這(zhe)樣的充(chong)電(dian)(dian)(dian)(dian)方式過去(qu)曾經出(chu)現在手表和(he)剃(ti)須刀上(shang),但是當時無法(fa)針對大(da)容量鋰離子電(dian)(dian)(dian)(dian)池(chi)進行(xing)有效充(chong)電(dian)(dian)(dian)(dian)。無線(xian)充(chong)電(dian)(dian)(dian)(dian)器技(ji)(ji)術(shu)(shu)原(yuan)理構圖如圖所示(shi)
無線充電器
最初由英國一家公司發明了一種新型無線充電器,它看上(shang)去就(jiu)像一塊(kuai)塑料鼠標墊,這個“鼠標墊”里裝有(you)(you)密集(ji)的小型線(xian)圈(quan)陣列,可產生磁場,將(jiang)(jiang)能(neng)量傳輸給裝有(you)(you)專用(yong)接收線(xian)圈(quan)的電(dian)子(zi)設(she)備(bei)(bei),進行充電(dian)。接收線(xian)圈(quan)由(you)磁性合金繞以電(dian)線(xian)制成,大小和形(xing)狀都與(yu)口香糖相(xiang)似,可以很方(fang)便地(di)貼在(zai)電(dian)子(zi)設(she)備(bei)(bei)上(shang)。將(jiang)(jiang)手機等放在(zai)墊上(shang)就(jiu)能(neng)充電(dian),并(bing)能(neng)同時給多個設(she)備(bei)(bei)充電(dian)。
充(chong)電(dian)(dian)技(ji)術(shu)此前已(yi)經出現,但(dan)這項新(xin)發明(ming)更為方便實用(yong)。手機等設(she)(she)備(bei)只(zhi)要貼上(shang)(shang)接(jie)收線(xian)圈,放(fang)置在“鼠標墊(dian)”上(shang)(shang)的(de)(de)任一位置都可(ke)充(chong)電(dian)(dian),不像以(yi)前的(de)(de)一些技(ji)術(shu)那樣需(xu)要精確定位。幾個設(she)(she)備(bei)同時放(fang)在墊(dian)子(zi)上(shang)(shang),可(ke)以(yi)同時進行充(chong)電(dian)(dian)。充(chong)電(dian)(dian)器產生的(de)(de)磁(ci)場很弱(ruo),能夠(gou)給設(she)(she)備(bei)充(chong)電(dian)(dian)但(dan)不會影響附近的(de)(de)信用(yong)卡(ka)、錄像帶(dai)等利用(yong)磁(ci)性(xing)記(ji)錄數(shu)據的(de)(de)物品。無線(xian)
無線充電器
輻射
麻(ma)省理(li)工學院的(de)研究(jiu)人員表(biao)示,身體對(dui)(dui)電場(chang)的(de)反(fan)應(ying)(ying)很強,但身體對(dui)(dui)磁場(chang)的(de)反(fan)應(ying)(ying)則(ze)幾乎沒有,因(yin)此這一(yi)系統不會(hui)影響人體健康(kang)。不過,這還只是一(yi)種(zhong)推測,有研究(jiu)人員對(dui)(dui)此觀(guan)點表(biao)示擔心,在真正應(ying)(ying)用(yong)于生(sheng)活(huo)前,還需(xu)要進一(yi)步進行試驗(yan)。
做為電(dian)(dian)(dian)子類充(chong)電(dian)(dian)(dian)產品(pin),充(chong)電(dian)(dian)(dian)器本身(shen)避免不了(le)輻射,所(suo)(suo)以無線充(chong)電(dian)(dian)(dian)器有(you)輻射是必然的。但是目前無線充(chong)電(dian)(dian)(dian)器的功率很小,充(chong)電(dian)(dian)(dian)時間較長(chang),所(suo)(suo)產生(sheng)的輻射也小,應該不會對人產生(sheng)較大的傷害。
本文摘自(zi)于中國充(chong)電器網