本文設計了一種多(duo)功(gong)能、高效、低功(gong)耗、安全的隨身移動電(dian)源，以(yi)滿足(zu)戶外需求，將有很(hen)大的實用價值。

　　本文論述的電路系統設計由五部分組成：鋰芯容量指示電路、電芯保護電路、電充電管理路、DC-DC升壓電路和功能擴展電路。
多功能隨身電源的系統設計

　　鋰芯容量指示電路由XC61CC系列的電壓監控芯片組成。電芯保護電路由過充保護、過放保護、過溫保護三部分組成，HAT2027、R5402、自恢復保險絲構建了三重保護，使鋰芯安全性大大增強。充電管理電路采用了CN3066，將充電過程分為涓流充電、恒流充電、恒壓充電和維護充電四個部分，使移動隨身電源能夠最大程度地儲備能量。DC-DC升壓電路采用了MAX1771集成芯片，可將鋰芯容量在安全范圍內最大限度釋放，達到對多種數碼設備供電的目的。功能擴展涵蓋了戶外活動所涉及的常見需求，具有應急夜間高亮照、戶外防盜安全警報、野營驅蚊等功能。多功能隨身電源的電路實現
 

DC-DC升壓電路

　　本系(xi)統中，DC-DC升壓電(dian)(dian)(dian)(dian)(dian)路主要由(you)MAX1771構成，該(gai)(gai)控(kong)(kong)制(zhi)(zhi)器采用獨特的(de)(de)控(kong)(kong)制(zhi)(zhi)方(fang)(fang)案(an)，結合PFM（脈沖(chong)頻率調(diao)制(zhi)(zhi)）及PWM（脈沖(chong)寬度調(diao)制(zhi)(zhi)）的(de)(de)優越(yue)性，提供一個高(gao)效(xiao)、較(jiao)寬電(dian)(dian)(dian)(dian)(dian)壓調(diao)節范圍(wei)的(de)(de)電(dian)(dian)(dian)(dian)(dian)源。前(qian)者具有(you)(you)較(jiao)小(xiao)(xiao)的(de)(de)靜態電(dian)(dian)(dian)(dian)(dian)流(liu)，負載小(xiao)(xiao)的(de)(de)情況下效(xiao)率較(jiao)高(gao)，但紋(wen)波較(jiao)大。后者在負載大的(de)(de)情況下具有(you)(you)較(jiao)高(gao)的(de)(de)效(xiao)率，噪聲小(xiao)(xiao)。該(gai)(gai)控(kong)(kong)制(zhi)(zhi)器采用的(de)(de)是(shi)一種(zhong)改進型的(de)(de)限(xian)(xian)流(liu)PFM控(kong)(kong)制(zhi)(zhi)方(fang)(fang)式，控(kong)(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)路限(xian)(xian)制(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)感充電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)，使(shi)其不超過某一峰(feng)值電(dian)(dian)(dian)(dian)(dian)流(liu)。既(ji)保持了傳統PFM的(de)(de)低靜態電(dian)(dian)(dian)(dian)(dian)流(liu)，同時在較(jiao)大負載的(de)(de)情況下，也具有(you)(you)很(hen)高(gao)的(de)(de)效(xiao)率。而且(qie)由(you)于(yu)限(xian)(xian)制(zhi)(zhi)了峰(feng)值電(dian)(dian)(dian)(dian)(dian)流(liu)，采用很(hen)小(xiao)(xiao)體積(ji)的(de)(de)外圍(wei)元件(jian)就可獲得滿意的(de)(de)輸出紋(wen)波，這(zhe)樣便于(yu)降低電(dian)(dian)(dian)(dian)(dian)路成本及尺寸。

　　如圖2所(suo)示(shi)，將4腳接(jie)地，可(ke)使其工作在閉環狀(zhuang)態。芯片由(you)引腳2上的電(dian)(dian)(dian)壓(ya)供電(dian)(dian)(dian)，同(tong)時也(ye)是輸(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)。輸(shu)(shu)入電(dian)(dian)(dian)壓(ya)可(ke)以進(jin)行從2V到(dao)輸(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)的變(bian)(bian)化。外(wai)接(jie)MOS管柵極1腳上的電(dian)(dian)(dian)壓(ya)，從輸(shu)(shu)出(chu)電(dian)(dian)(dian)平(ping)到(dao)零(ling)電(dian)(dian)(dian)平(ping)跳變(bian)(bian)，這(zhe)樣可(ke)以提供更(geng)人的柵極驅動，從而減小外(wai)接(jie)MOS管的開啟電(dian)(dian)(dian)阻。

　　MAX1771外(wai)接MOS管平時是關閉的，此時電(dian)(dian)感儲能。關閉期間，MAX1771會檢測(ce)外(wai)部輸入電(dian)(dian)壓(ya)，一旦降低(di)到了一定限(xian)度，MAX1771就會開(kai)啟外(wai)部MOS管，電(dian)(dian)感釋放能量(liang)，重新提(ti)供驅動電(dian)(dian)壓(ya)。開(kai)關頻率隨(sui)負(fu)載電(dian)(dian)流(liu)和輸入電(dian)(dian)壓(ya)而定。5V電(dian)(dian)壓(ya)通過兩個反(fan)饋(kui)電(dian)(dian)阻分壓(ya)得(de)到。

　　此外，續流二極管(guan)選用肖特(te)基二極管(guan)SS34，該器件正向導通電壓小(xiao)，響應時間短。

鋰芯容量指示電路

　　本系統電(dian)路設計采用了一種比較(jiao)簡單(dan)且(qie)實用的(de)(de)(de)方法，即(ji)通過(guo)測(ce)試鋰芯電(dian)池(chi)放(fang)電(dian)的(de)(de)(de)時間電(dian)壓(ya)(ya)特性曲線，選取整(zheng)個放(fang)電(dian)過(guo)程的(de)(de)(de)四個位點電(dian)壓(ya)(ya)，用電(dian)壓(ya)(ya)來估(gu)算電(dian)池(chi)的(de)(de)(de)容量。

　　如圖3所(suo)示(shi)(shi)(shi)，當(dang)按(an)下電壓(ya)容量(liang)指示(shi)(shi)(shi)的(de)功能按(an)鍵，鋰芯(xin)的(de)電池電壓(ya)會加到XC61系列芯(xin)片(pian)的(de)VIN與VSS引腳上。當(dang)電壓(ya)高丁4.1V，四(si)(si)個(ge)芯(xin)片(pian)同(tong)時(shi)工作，電池與限流電阻(zu)、LED發(fa)(fa)光(guang)(guang)管(guan)形成(cheng)四(si)(si)個(ge)回路。此時(shi)四(si)(si)個(ge)發(fa)(fa)光(guang)(guang)管(guan)同(tong)時(shi)發(fa)(fa)亮(liang)(liang)，表示(shi)(shi)(shi)電池容量(liang)飽和。當(dang)電池電壓(ya)在(zai)4.1V～3.8V之間(jian)，只有(you)三(san)個(ge)芯(xin)片(pian)工作，4102不工作，此時(shi)形成(cheng)三(san)個(ge)回路，三(san)個(ge)發(fa)(fa)光(guang)(guang)管(guan)發(fa)(fa)亮(liang)(liang)，表示(shi)(shi)(shi)電池容量(liang)有(you)所(suo)下降。同(tong)理可(ke)知(zhi)其它(ta)的(de)兩種(zhong)情況。

鋰芯保護電路

　　如圖1所示(shi)，電芯保護電路主要由R5402和(he)HAT2027共同組成(cheng)。除此之外，自恢復保險絲(si)起(qi)到(dao)了最后(hou)一(yi)層保護的(de)作用。

　　R5402是一種高精度(du)、基于CMOS的鋰芯(xin)電(dian)池電(dian)壓(ya)保(bao)護芯(xin)片(pian)。HAT2027是具(ju)有電(dian)流流通方向可(ke)調的雙MOS產(chan)品。

　　充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)從低到高(gao)(gao)上(shang)升，當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)大于4.25V時，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態被鎖存(cun)，引腳(jiao)COUT就會從高(gao)(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)平跳為低電(dian)(dian)(dian)(dian)(dian)(dian)(dian)平，HAT2027內置二極管發揮單向導(dao)通作用。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流方(fang)向只(zhi)能(neng)從1腳(jiao)到3腳(jiao)，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源無法繼續給(gei)鋰芯充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。如果充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源繼續加載在(zai)鋰芯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)兩端(duan)，即使鋰芯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)在(zai)4.25V以(yi)下(xia)，R5402具(ju)有的過(guo)充(chong)鎖存(cun)狀(zhuang)態也(ye)不(bu)會被釋放。這樣(yang)就保證了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)在(zai)連續充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)飽(bao)和之后，能(neng)鎖存(cun)在(zai)過(guo)充(chong)狀(zhuang)態，隔離充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源對高(gao)(gao)能(neng)量電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)持續充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。只(zhi)有當(dang)過(guo)充(chong)時，斷開充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源，過(guo)充(chong)鎖存(cun)狀(zhuang)態才會被釋放，COUT重新變為高(gao)(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)平，HAT2027的1、3引腳(jiao)此時雙向導(dao)通，鋰芯才能(neng)正常(chang)工作。

　　放(fang)電(dian)(dian)時(shi)，電(dian)(dian)池(chi)電(dian)(dian)壓(ya)(ya)(ya)下降(jiang)，當小于2.3V時(shi)，放(fang)電(dian)(dian)狀(zhuang)態(tai)(tai)(tai)(tai)被(bei)鎖(suo)存(cun)，引腳DOUT的輸出(chu)從(cong)高(gao)(gao)電(dian)(dian)平(ping)(ping)跳為低電(dian)(dian)平(ping)(ping)，HAT2027內(nei)置二(er)極管發揮單向(xiang)導通(tong)作(zuo)用。電(dian)(dian)流方向(xiang)只(zhi)能(neng)從(cong)3腳到1腳，鋰(li)芯電(dian)(dian)池(chi)組無法繼(ji)續給負(fu)載放(fang)電(dian)(dian)。如果沒有(you)接(jie)上充電(dian)(dian)電(dian)(dian)源(yuan)，即使(shi)鋰(li)芯電(dian)(dian)壓(ya)(ya)(ya)高(gao)(gao)于過(guo)(guo)放(fang)電(dian)(dian)壓(ya)(ya)(ya)的最大值，放(fang)電(dian)(dian)鎖(suo)存(cun)狀(zhuang)態(tai)(tai)(tai)(tai)也不會被(bei)釋放(fang)，這(zhe)就保證了電(dian)(dian)池(chi)組在(zai)(zai)經(jing)過(guo)(guo)長時(shi)間(jian)放(fang)電(dian)(dian)，電(dian)(dian)壓(ya)(ya)(ya)下降(jiang)到2.3V之后，能(neng)鎖(suo)存(cun)在(zai)(zai)過(guo)(guo)放(fang)狀(zhuang)態(tai)(tai)(tai)(tai)，隔(ge)離低能(neng)量電(dian)(dian)池(chi)組持(chi)續放(fang)電(dian)(dian)。只(zhi)有(you)當過(guo)(guo)放(fang)時(shi)，接(jie)上充電(dian)(dian)電(dian)(dian)源(yuan)，鋰(li)芯電(dian)(dian)壓(ya)(ya)(ya)開(kai)始高(gao)(gao)于過(guo)(guo)放(fang)電(dian)(dian)壓(ya)(ya)(ya)時(shi)，過(guo)(guo)放(fang)鎖(suo)存(cun)狀(zhuang)態(tai)(tai)(tai)(tai)才會被(bei)釋放(fang)，同時(shi)引腳DOUT的電(dian)(dian)壓(ya)(ya)(ya)重新(xin)變為高(gao)(gao)電(dian)(dian)平(ping)(ping)，HAT2027的1、3引腳雙(shuang)向(xiang)導通(tong)，鋰(li)芯既(ji)能(neng)工作(zuo)在(zai)(zai)放(fang)電(dian)(dian)狀(zhuang)態(tai)(tai)(tai)(tai)，又能(neng)工作(zuo)在(zai)(zai)充電(dian)(dian)狀(zhuang)態(tai)(tai)(tai)(tai)。

　　當(dang)鋰芯(xin)短路(lu)時(shi)，D。，跳到(dao)低電(dian)(dian)平。此時(shi)，鋰芯(xin)受HAT2027控制無法放電(dian)(dian)，起(qi)到(dao)鋰芯(xin)保(bao)護作用(yong)。與此同時(shi)，自恢(hui)復保(bao)險(xian)絲由于短路(lu)的大電(dian)(dian)流(liu)，會(hui)受熱膨脹，電(dian)(dian)路(lu)切斷(duan)，起(qi)到(dao)最(zui)后(hou)一層(ceng)保(bao)護的作用(yong)。當(dang)短路(lu)故障排除，白恢(hui)復保(bao)險(xian)絲恢(hui)復，R5402檢電(dian)(dian)器釋放，D。，，重新恢(hui)復高電(dian)(dian)平。

　　該電路還增設了“休眠”的功能。當電路工作在過放狀態，補充電流將會保持非常低的值，從而停止內部電路的工作，使低能量的鋰芯不會被R5402和系統后級回路繼續消耗能量。該電路還具有瞬時監控功能。在鋰芯負極取一個電壓接到R5402的V引腳，內置檢電器的延時可以減少大概1／57秒。因此，可以監測電池容量瞬時狀態。
 

充電管理電路

　　充電管理電路由CN3066和繼電器構成，如圖4所示。當隨身電源監測到有充電器對其(qi)充電(dian)(dian)時，繼電(dian)(dian)器令CN3066開始工作，CN3066將整個充電(dian)(dian)管理過程分為四個部分，即預充電(dian)(dian)、恒流充電(dian)(dian)、恒壓充電(dian)(dian)以及維護充電(dian)(dian)。

　　當(dang)CN3066開始工作(zuo)時，CN3066會(hui)檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)是(shi)否較低，如果是(shi)，則采用(yong)涓(juan)(juan)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，即(ji)一(yi)(yi)個(ge)比較小的(de)(de)(de)恒定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)進行充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，直(zhi)至電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)上升到(dao)一(yi)(yi)個(ge)安(an)全值。之后，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)保持(chi)較大(da)(da)值不變，通常(chang)是(shi)涓(juan)(juan)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)10倍或(huo)更(geng)大(da)(da)。1000mAh的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)采用(yong)700mA電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這(zhe)可以避免大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對(dui)鋰(li)芯(xin)的(de)(de)(de)損壞。在(zai)恒流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和涓(juan)(juan)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)下(xia)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)管理(li)芯(xin)片連續監(jian)控(kong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，當(dang)單節鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)達到(dao)4.2V，恒流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)結束，轉入恒壓(ya)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)。在(zai)該狀(zhuang)態(tai)下(xia)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)恒定(ding)在(zai)4.2V。當(dang)鋰(li)芯(xin)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)下(xia)降為原來(lai)的(de)(de)(de)1／10之后，恒壓(ya)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)結束。在(zai)維(wei)護充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)(chong)足電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)后，若移動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源仍(reng)插(cha)在(zai)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器上，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)會(hui)由(you)于自放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而損失電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量。CN3066以非常(chang)小的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)對(dui)鋰(li)芯(xin)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)或(huo)監(jian)測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位，以備對(dui)鋰(li)芯(xin)再充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這(zhe)種狀(zhuang)態(tai)稱(cheng)為維(wei)護充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)。

　　在(zai)本電(dian)(dian)(dian)(dian)路中(zhong)，CN3066會實(shi)時(shi)(shi)監測鋰芯的電(dian)(dian)(dian)(dian)壓(ya)(ya)、溫度、充(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)和充(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)間。一旦電(dian)(dian)(dian)(dian)池(chi)的溫度達(da)(da)到60℃，或鋰離子電(dian)(dian)(dian)(dian)池(chi)的電(dian)(dian)(dian)(dian)壓(ya)(ya)達(da)(da)到4.2V，恒壓(ya)(ya)充(chong)電(dian)(dian)(dian)(dian)狀態自動終止。此外，還應設置最(zui)長恒壓(ya)(ya)充(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)間。在(zai)溫度和電(dian)(dian)(dian)(dian)壓(ya)(ya)檢測失(shi)敗的情況下，可以保證鋰電(dian)(dian)(dian)(dian)池(chi)安(an)全(quan)充(chong)電(dian)(dian)(dian)(dian)。

　　當拔掉充電器，CN3066關閉，隨身(shen)電源(yuan)處于(yu)預放電狀態。多(duo)功能擴展(zhan)電路

高亮照明功能

　　戶外活動時，特別(bie)是夜間活動，需(xu)要(yao)一(yi)個高(gao)(gao)亮(liang)(liang)的光源。如圖(tu)5所(suo)示，夜行(xing)高(gao)(gao)亮(liang)(liang)照明(ming)系統(tong)，在USB輸出(chu)口可得到5V電壓，加上高(gao)(gao)亮(liang)(liang)發(fa)光二(er)極管(guan)和一(yi)個小的限流電阻共同組成(cheng)。高(gao)(gao)亮(liang)(liang)管(guan)足夠5米內(nei)的照明(ming)光程(cheng)。

戶外報警功能

　　戶(hu)外(wai)出(chu)行，個人財(cai)物的(de)防(fang)盜(dao)至關(guan)重要。安全可靠的(de)報(bao)警系統有助于保(bao)障個人財(cai)物的(de)安全，特(te)別(bie)是戶(hu)外(wai)野營(ying)，靈敏的(de)防(fang)盜(dao)措施在夜間將(jiang)發(fa)揮其巨(ju)大功效。

　　如圖5所示，當按下預報警功能鍵時，USB輸出電壓加載在報警系統上，此時移動隨身電源處于“預報警”狀態。當水銀開關B1位置偏移正常的斷開位置，將觸發繼電器工作，使KD9561音樂片工作，發出報警響聲，提醒注意安全。
 

 野外驅蚊功能

　　如圖6所示，由(you)左邊555合(he)成的(de)(de)振蕩頻率(lv)約為(wei)22KHz，再(zai)由(you)右邊555單(dan)穩態電路產生一個50Hz，占(zhan)空(kong)比為(wei)50％的(de)(de)方波(bo)輸入左邊555的(de)(de)5腳，合(he)成一種噪聲，用于(yu)驅(qu)趕蚊(wen)于(yu)。

　　電路測試

DC-DC電路測試

　　由圖(tu)7可見，移動電源連(lian)續放電的總能量(liang)在2200mAh以(yi)上，輸出(chu)穩定。

擴展功能模塊的測試

　　夜行高亮燈管的有效光程為6米。報警系統能夠正常工作。驅蚊系統發出21KHz的噪聲，對蚊子具有明顯的驅趕作用。
總體測試

　　實(shi)驗結果證明，多功能(neng)隨身電源能(neng)對(dui)市面上(shang)大多數手機連續(xu)充(chong)電5次以上(shang)，對(dui)MP3、MP4充(chong)電12次以上(shang)，表明隨身電源在戶外(wai)活(huo)動中有(you)充(chong)足的(de)能(neng)量儲(chu)備(bei)。

　　本系統方案設(she)計將多功能(neng)、低功耗(hao)、安全性、高容量、重(zhong)量輕等(deng)諸多特點(dian)整合在一起(qi)，使(shi)整個產品的設(she)計符(fu)合實際使(shi)用要(yao)求(qiu)，具有廣闊的市(shi)場前景。

　　該方案科學縝密地排除了(le)鋰芯在使用過程(cheng)中(zhong)出(chu)現的(de)各種安全隱(yin)患(huan)，與此同時，還巧妙(miao)地設計了(le)幾個人性化的(de)功能(neng)模塊，滿(man)足了(le)戶外活(huo)動(dong)的(de)常(chang)見需求。