【正文】
lectricity, can use the sun to cell phone charging, bring convenience to people39。人們慢慢的發(fā)現(xiàn),太陽能是很好的資源,不但綠色環(huán)保,而且能夠減少不少資源的浪費(fèi),在這太陽光隨時(shí)隨地都能找到,不至于我們想要或者需求的時(shí)候無法及時(shí)找到,這就解決了人們?cè)趹敉鉀]法充電和充電不及時(shí)的問題。人們會(huì)經(jīng)常的出差或者是外出旅游,在外邊我們有時(shí)會(huì)攜帶自備的所謂的一些移動(dòng)電源,但是這些電源也有沒電,而且攜帶極度不方便,有的甚至?xí)晌覀兺獬龅呢?fù)擔(dān)。到處可見人們,無論是在街上還是在上班的空閑時(shí)間都會(huì)拿出自己的手機(jī),然而給手機(jī)充電成為了人們棘手的問題。 伴隨著手機(jī)電池的不斷進(jìn)步,手機(jī)充電器也在不斷的被人們改善,不斷地發(fā)現(xiàn)一些充電器不能滿足人們?nèi)粘5纳?,從一開始的一個(gè)手機(jī)只能采用一個(gè)數(shù)據(jù)線,到后來的多個(gè)手機(jī)可以采用一個(gè)數(shù)據(jù)線,再到現(xiàn)在的移動(dòng)電源,手機(jī)充電器也在不斷進(jìn)步。s society, the mobile phone became synonymous with the familiar, basically everyone has a mobile phone, mobile phone is not only a munication tool, but also an entertainment tool, and even bee the pronoun of the fashion. All the time we will use a mobile phone, I think most people have experienced the phone without electricity, take the phone stem worried, some people go out, mobile phone battery is delay some important things, so a good phone charger is very important. We may take phone charger everywhere looking for dc power supply, it is not just delayed us some time, to make matters worse, would bring us convenient things I bring us unnecessary trouble. But some people carry a mobile power supply, mobile power supply will have no electricity, then the burden of mobile power as we go out. In order to solve this problem, to introduce the solar mobile charger, do not need to use dc power charging, directly in the sun after panels convert directly to mobile phone charging, this give us save a lot of time to find mobile power for charging the mobile phone, is that we go out or on a business trip to bring great convenience.Solar presumably everyone not unfamiliar, it had no consumption, environmental protection, renewable became the hottest new energy, its rise speed unmatched. Now have to use solar energy in many ways, both in the aerospace, or the life that occupy the home, can see the use of solar energy. If the application of solar energy to the charger, it will bring great convenience to people, do not need to be looking for power supply, also need not take phone stem worried, everywhere we only need to stand in the sun for a while, the charger will charge your mobile phone for us, don39。我們可能會(huì)拿著手機(jī)充電器到處去尋找直流電源,這不僅僅耽誤了我們一些時(shí)間,更糟糕的是,本來給我們帶來便利的東西卻給我們帶來了不必要的麻煩。目前在多方面都有使用太陽能,無論是在航天航空,還是居家生活,都能見到太陽能的使用。 現(xiàn)在隨著數(shù)碼產(chǎn)品的普遍化,手機(jī)已經(jīng)不再是奢侈品,幾乎人手都會(huì)有一個(gè)手機(jī),手機(jī)更像是時(shí)尚的代表,從一開始的僅有幾個(gè)人擁有,作為一種通信工具,到現(xiàn)在作為交友工具,甚至成為了人們的娛樂工具。人們不斷的研究,從過去的直接充電,到后來的用數(shù)據(jù)線連接后充電,再到現(xiàn)在的用些萬能充充電,科技在發(fā)展,手機(jī)充電器也在不斷的改進(jìn)。 本課題的研究?jī)?nèi)容及主要技術(shù)參數(shù)本課題研究是的是在單片機(jī)的控制下完成太陽能手機(jī)充電器的智能充電,該手機(jī)充電器實(shí)現(xiàn)了能量的自給自足,在直流電和太陽能之間隨意切換。達(dá)到解決人們?cè)谕鉄o法充電的問題。之所以把其作為我們的調(diào)研的對(duì)象,是因?yàn)槿A為手機(jī)在人群眾使用比較普遍,其適中的價(jià)格及優(yōu)越的外觀博得人們的心動(dòng),其主要原因是我國自主研發(fā),手機(jī)充電器也有一些不同之處。DR1是壓敏電阻,防止雷擊等浪涌電壓可能對(duì)開關(guān)電源造成的損壞。輔助繞組的脈沖電壓一路經(jīng)二極管D整流給FAN104供電;另一路經(jīng)電阻與分壓(濾波雜波)加到內(nèi)部電壓誤差放大器反相端(見下文),與同相端的精密基準(zhǔn)電壓比較,輸出放大的電壓誤差信號(hào)COMV,控制2腳輸出PWM的占空比。但因輸出電壓與、及初次匝比有關(guān),因此一旦確定了初次匝比,若要設(shè)計(jì)輸出電壓為5V,則、的比值就定了,實(shí)際選擇、的阻值時(shí),未必符合標(biāo)準(zhǔn)系列。 如圖25所示空載與負(fù)載(給充電寶充電)時(shí),F(xiàn)AN104的2腳與開關(guān)管漏極的電壓波形。 圖26輸出短路FAN301的2腳會(huì)間歇輸出占空比很小的PWM 以上簡(jiǎn)單的介紹了以華為的代表的普通的手機(jī)充電器工作原理,要想把其改造成一個(gè)太陽能手機(jī)充電器還需要找到好的太陽能電池板,要全方面的考慮一些綜合問題。然而在科技發(fā)達(dá)的今天,太陽能的可發(fā)已經(jīng)相當(dāng)成熟,太陽能電池板到處可見,大到天上的衛(wèi)星,小到家里的一些計(jì)算器,從科研、航天到居家生活,無處不在,太陽能已經(jīng)是我們生活中的一部分。太陽能發(fā)電方式有兩種方式,一種是光—熱—電轉(zhuǎn)換方式,另一種是光—電直接轉(zhuǎn)換方式。單晶硅發(fā)電效率高價(jià)格高,多晶硅發(fā)電效率稍低但價(jià)格相比便宜好多。但是考慮到方便簡(jiǎn)單易攜帶,又必須做的相當(dāng)精