消(xiao)費電子產(chan)品以(yi)及許多其(qi)他行業(ye)都越(yue)來越(yue)講究(jiu)產(chan)品的(de)移動性(xing)，醫(yi)療(liao)器械(xie)(xie)制造商也(ye)不(bu)例外(wai)，這樣的(de)趨勢(shi)提高(gao)了現場救助設(she)備(bei)、監(jian)控設(she)備(bei)和固定(ding)醫(yi)療(liao)設(she)備(bei)的(de)性(xing)能(neng)，進(jin)而推動了醫(yi)療(liao)保健行業(ye)的(de)發展(zhan)。不(bu)過除了便攜(xie)性(xing)以(yi)外(wai)，醫(yi)療(liao)器械(xie)(xie)制造商當然(ran)還希望(wang)能(neng)夠制造出可靠性(xing)高(gao)的(de)器械(xie)(xie)，因為人(ren)們的(de)生命往往命懸一線。手機壞(huai)了固然(ran)是(shi)惱人(ren)的(de)事，但如(ru)果便攜(xie)式心臟(zang)監(jian)控儀或者輸液泵由于電池耗盡而停止運作(zuo)，終(zhong)端用戶――及病人(ren)――面臨的(de)問題則嚴重得多。 一種能(neng)量密度更(geng)高(gao)的(de)技術可以(yi)釋放比其(qi)它同類產(chan)品更(geng)多的(de)能(neng)量，且(qie)體(ti)積(ji)更(geng)小。

    幾年前，醫療專業人員還無法將救助生命的設備帶到現場；因為那時便攜式儀器的技術尚未成熟。但如今，大量的監控儀器、超聲設備和輸液泵可在遠離醫院的場所使用――甚至戰場。便攜式設備的移動越來越方便。正是由于諸如鋰離子電池等技術的應用，重(zhong)達50磅的笨重(zhong)除顫器(qi)才可以被更輕便(bian)、更緊湊的用戶友好型裝置取(qu)代，也不會造成醫(yi)護(hu)人員肌(ji)肉的拉(la)傷(shang)。

    病人(ren)的移(yi)動性也變得越(yue)來越(yue)重要。如今的病人(ren)可(ke)能會從放(fang)射科轉移(yi)到(dao)重癥監(jian)護(hu)病房，從救護(hu)車(che)轉移(yi)到(dao)急救室，或用救護(hu)車(che)從一家醫(yi)院轉移(yi)到(dao)另一家醫(yi)院。同樣地，便攜式家用儀器和移(yi)動式監(jian)控設(she)備的普及，使病人(ren)可(ke)以待在喜歡的地方，而并不一定要留在醫(yi)療機構中。便攜式醫(yi)療器械必須(xu)真(zhen)正實現完(wan)全意義上的便攜，為病人(ren)提供最(zui)佳服務。

    對更(geng)(geng)小型、更(geng)(geng)輕便(bian)的(de)醫(yi)療器械的(de)需求也因此顯著增加，這大(da)大(da)激(ji)發了(le)(le)人們對更(geng)(geng)高(gao)能量密度、更(geng)(geng)小巧的(de)電池(chi)組的(de)興趣。筆記本電腦和手機使(shi)用(yong)的(de)鋰離(li)子電池(chi)技術已經有了(le)(le)許多突破，醫(yi)療設(she)備設(she)計工程(cheng)師可以(yi)對此加以(yi)創新利用(yong)。

    與(yu)其它(ta)傳統技術相比，鋰離子(zi)電(dian)池在(zai)便攜式醫(yi)療設備(bei)的應用中(zhong)具(ju)有(you)很(hen)多優勢。這(zhe)包括能量密度(du)更高、重量更輕(qing)、循環壽(shou)命更長、電(dian)池容量保(bao)持(chi)特性更好，以及(ji)適用溫度(du)范圍(wei)更廣。

    由(you)于化學性(xing)質獨(du)特，鋰離子(zi)技(ji)術對設計(ji)方面(mian)的(de)限制與(yu)先前(qian)的(de)電(dian)(dian)池(chi)技(ji)術如鎳氫化合物(NiMH)、鎳鎘(NiCd)和(he)密封鉛酸(SLA)不同。同時，醫療設備在某些方面(mian)比(bi)消費(fei)電(dian)(dian)子(zi)產品(pin)有(you)更嚴(yan)格(ge)的(de)操作要求；由(you)于可靠(kao)性(xing)非常(chang)重要，因此需要有(you)功能(neng)強大的(de)電(dian)(dian)池(chi)組(zu)，帶(dai)有(you)精確(que)電(dian)(dian)量監測且可靠(kao)的(de)電(dian)(dian)池(chi)。

    本文結合醫療器械的要求及鋰離(li)子(zi)(zi)技術(shu)的特性，概述了(le)便攜式電源系統設計的注意(yi)事(shi)項。并比較了(le)鋰離(li)子(zi)(zi)電池(chi)和其它化學電池(chi)的特性和容(rong)量。

    能量密(mi)度(du)和電壓(ya)

    鋰離子電池技術的主要優勢在于其能量密度的顯著提高。相同體積和重量時，鋰離子電池可儲存和(he)釋放的能(neng)量比其它充電電池更高(gao)。能(neng)量密度(du)以體積和(he)質(zhi)量兩種方式測量。鋰離子技術現可以提供近500Wh/L的體積能(neng)量密度(du)和(he)200Wh/kg的質(zhi)量能(neng)量密度(du)(見圖1)。

    圖1.鋰離子的(de)能量密度遠(yuan)高于鎳化合物。

    與其(qi)它技術相(xiang)比，鋰(li)離子可以釋(shi)放更(geng)多(duo)的(de)能(neng)量，而且體(ti)(ti)積更(geng)小，質量更(geng)輕。鋰(li)離子電池(chi)的(de)工作電壓比其(qi)它充(chong)電電池(chi)更(geng)高，通常約為(wei)3.7V，而NiCd或NiMH電池(chi)為(wei)1.2V。這意味著需(xu)要使用(yong)多(duo)節其(qi)它電池(chi)時，僅需(xu)一節鋰(li)離子電池(chi)即可滿足(zu)使用(yong)要求。便(bian)攜式儀器設計(ji)中(zhong)使用(yong)的(de)電池(chi)能(neng)量密(mi)度越(yue)高，其(qi)產品的(de)體(ti)(ti)積越(yue)小，便(bian)攜性(xing)也(ye)越(yue)好。

    電池組體積的縮小表示工程師可以利用(yong)多余空間，在同(tong)一產品中增(zeng)添更多新功(gong)能(見圖2)。

    圖2.鋰離子電池有(you)圓柱形和(he)棱柱形兩(liang)種形狀，可制成不(bu)同(tong)尺寸(cun)和(he)容量的電池。

    自放電

    充電(dian)(dian)電(dian)(dian)池的(de)容(rong)量會不(bu)斷(duan)損(sun)失。該現象即(ji)稱為自(zi)放電(dian)(dian)。但若儲存得(de)當，其損(sun)失的(de)大部分容(rong)量仍可恢復。

    所有電(dian)(dian)(dian)池(chi)(chi)均應在(zai)室溫（25°C或更低(di)）下儲(chu)(chu)存(cun)，以(yi)保持最(zui)大的電(dian)(dian)(dian)池(chi)(chi)容(rong)量(liang)。終端用戶(hu)須(xu)將SLA電(dian)(dian)(dian)池(chi)(chi)放(fang)(fang)(fang)在(zai)低(di)溫下儲(chu)(chu)存(cun)，并(bing)盡可(ke)能每次充(chong)電(dian)(dian)(dian)量(liang)接近其(qi)容(rong)量(liang)的100%，以(yi)保持最(zui)佳性能。密封鉛電(dian)(dian)(dian)池(chi)(chi)在(zai)25°C下放(fang)(fang)(fang)置6個(ge)月(yue)后(hou)(hou)(hou)自(zi)放(fang)(fang)(fang)電(dian)(dian)(dian)容(rong)量(liang)約為(wei)20%；但40°C放(fang)(fang)(fang)置6個(ge)月(yue)后(hou)(hou)(hou)該值則增加到約30%。NiMH電(dian)(dian)(dian)池(chi)(chi)也應遵循類似的建議，避免(mian)長(chang)期(qi)儲(chu)(chu)存(cun)使(shi)反應物失活。NiCd和NiMH電(dian)(dian)(dian)池(chi)(chi)在(zai)25°C下放(fang)(fang)(fang)置1個(ge)月(yue)，其(qi)自(zi)放(fang)(fang)(fang)電(dian)(dian)(dian)率約為(wei)20%，隨后(hou)(hou)(hou)自(zi)放(fang)(fang)(fang)電(dian)(dian)(dian)率的增速(su)顯著(zhu)減慢(man)。相反，當(dang)鋰(li)離(li)子電(dian)(dian)(dian)池(chi)(chi)儲(chu)(chu)存(cun)時(shi)的充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)量(liang)為(wei)30-50%時(shi)，可(ke)獲得最(zui)佳循環壽命。鋰(li)離(li)子電(dian)(dian)(dian)池(chi)(chi)25°C儲(chu)(chu)存(cun)6個(ge)月(yue)后(hou)(hou)(hou)的自(zi)放(fang)(fang)(fang)電(dian)(dian)(dian)容(rong)量(liang)僅為(wei)10%。

    倍率特性

    選擇材料時，應考慮到其(qi)終端裝置(zhi)的涌(yong)流和最大放電率。電池或電池組以高倍率放電會造成電壓下(xia)降。如果設計時沒有考慮到這方面，終端裝置(zhi)可能會由于電壓不(bu)足而關閉。

    高倍率的(de)(de)NiCd電(dian)(dian)池的(de)(de)連(lian)(lian)續(xu)放(fang)電(dian)(dian)率可(ke)(ke)達2C（電(dian)(dian)池額定容(rong)量的(de)(de)兩倍）甚至更(geng)(geng)高，具體取(qu)決于電(dian)(dian)池原料(liao)及內部阻(zu)抗。許多SLA電(dian)(dian)池的(de)(de)連(lian)(lian)續(xu)放(fang)電(dian)(dian)率可(ke)(ke)達3C甚至更(geng)(geng)高。大(da)(da)部分的(de)(de)鋰離子電(dian)(dian)池的(de)(de)連(lian)(lian)續(xu)放(fang)電(dian)(dian)率僅為1C，但采用(yong)該技術的(de)(de)新電(dian)(dian)池，其連(lian)(lian)續(xu)放(fang)電(dian)(dian)率極高，達到80A，可(ke)(ke)持續(xu)30秒，在與NiCd和SLA電(dian)(dian)池的(de)(de)競(jing)爭(zheng)中具有很(hen)大(da)(da)的(de)(de)優勢(shi)。

    循環(huan)壽命

    電(dian)池(chi)的(de)(de)循環(huan)壽命是電(dian)池(chi)容(rong)量(liang)下(xia)降到(dao)其(qi)原始(shi)容(rong)量(liang)的(de)(de)某(mou)一規定(ding)百分比之(zhi)前，電(dian)池(chi)所經歷(li)的(de)(de)充放電(dian)循環(huan)次(ci)數(shu)。鉛酸電(dian)池(chi)的(de)(de)循環(huan)壽命約(yue)為250至500次(ci)，具體取決于制造商的(de)(de)產品質量(liang)和(he)放電(dian)深(shen)度(du)（放電(dian)容(rong)量(liang)最多至額定(ding)容(rong)量(liang)的(de)(de)60%）。NiCd、NiMH和(he)鋰離子電(dian)池(chi)通常可耐(nai)受500-700次(ci)充放電(dian)循環(huan)，其(qi)容(rong)量(liang)僅下(xia)降為額定(ding)容(rong)量(liang)的(de)(de)80%。不管使用何(he)種化(hua)學物質，電(dian)池(chi)放電(dian)深(shen)度(du)越深(shen)，用戶可使用的(de)(de)循環(huan)次(ci)數(shu)就(jiu)越少。

    充電差(cha)異

    鋰離子電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)方(fang)式(shi)(shi)不同于(yu)其它電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)。SLA電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)最好(hao)采用恒(heng)壓(ya)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，速率通常為額定容量(liang)的(de)(de)(de)1/10(C/10)，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)時間為14-16小時，或(huo)涓流(liu)(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)或(huo)浮充(chong)(chong)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)速率為C/20至C/30。NiCd電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)終(zhong)止(zhi)推薦(jian)采用-△V的(de)(de)(de)方(fang)式(shi)(shi)，此時充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)到達(da)峰值。NiMH電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)由于(yu)其發(fa)熱的(de)(de)(de)特點，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)過程中要求采用溫度(du)檢測，ΔT/Δt為其首選(xuan)方(fang)式(shi)(shi)。特制的(de)(de)(de)快(kuai)充(chong)(chong)式(shi)(shi)NiCd和NiMH電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)可(ke)在(zai)C/2-C/3的(de)(de)(de)速率下充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)4-6小時。極低阻尼鎳電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)作為快(kuai)充(chong)(chong)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)一種，可(ke)在(zai)1C速率下充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)1小時。最后，鋰離子電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)建議采用恒(heng)流(liu)(liu)/恒(heng)壓(ya)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(CC/CV)。

    通常，鋰離子(zi)電(dian)(dian)(dian)(dian)池供電(dian)(dian)(dian)(dian)的器械以1C的速(su)率(lv)充(chong)電(dian)(dian)(dian)(dian)60-75分鐘至4.1V后，即可從原(yuan)來的低能狀態達到電(dian)(dian)(dian)(dian)量80-90%的狀態。其它電(dian)(dian)(dian)(dian)池，除可采用(yong)高電(dian)(dian)(dian)(dian)流(liu)充(chong)電(dian)(dian)(dian)(dian)的特(te)制電(dian)(dian)(dian)(dian)池外，同(tong)樣充(chong)電(dian)(dian)(dian)(dian)至80-90%時可能需要更多的時間。

   鋰離(li)子(zi)電(dian)(dian)(dian)池還(huan)需(xu)慢(man)充(chong)(chong)(chong)4-5小時至4.2V，獲(huo)得剩余的10-20%的電(dian)(dian)(dian)量(liang)。這種充(chong)(chong)(chong)電(dian)(dian)(dian)方式有兩個(ge)好處。用戶可以在(zai)極短的時間(jian)內獲(huo)得接近滿(man)充(chong)(chong)(chong)的電(dian)(dian)(dian)量(liang)，且充(chong)(chong)(chong)電(dian)(dian)(dian)完成(cheng)后的實(shi)際電(dian)(dian)(dian)壓(ya)絕不會超過4.2V。

    須注意的(de)是：如(ru)果僅(jin)將(jiang)鋰(li)離(li)(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)充至4.1V而非4.2V，可(ke)延長(chang)其(qi)循環壽命；但(dan)其(qi)每次可(ke)用(yong)的(de)電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)將(jiang)會下降。在(zai)某些(xie)醫(yi)療器械中(zhong)電(dian)(dian)(dian)(dian)(dian)池(chi)是一種(zhong)后備(bei)裝置，它(ta)始終(zhong)保(bao)(bao)持充電(dian)(dian)(dian)(dian)(dian)的(de)狀態(tai)，以(yi)(yi)保(bao)(bao)證隨(sui)(sui)時可(ke)用(yong)。鋰(li)離(li)(li)(li)子(zi)(zi)的(de)化(hua)學性(xing)質決定(ding)其(qi)不(bu)適(shi)合采用(yong)涓流(liu)充電(dian)(dian)(dian)(dian)(dian)；鋰(li)離(li)(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)不(bu)能采用(yong)恒定(ding)浮(fu)充充電(dian)(dian)(dian)(dian)(dian)。但(dan)有(you)幾種(zhong)方(fang)法可(ke)以(yi)(yi)在(zai)不(bu)損害電(dian)(dian)(dian)(dian)(dian)池(chi)或影響(xiang)醫(yi)療器械的(de)基礎上，有(you)效(xiao)降低鋰(li)離(li)(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)過度充電(dian)(dian)(dian)(dian)(dian)的(de)可(ke)能性(xing)。方(fang)法之一是在(zai)觸發(fa)電(dian)(dian)(dian)(dian)(dian)池(chi)再次充電(dian)(dian)(dian)(dian)(dian)前確保(bao)(bao)電(dian)(dian)(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)至少(shao)為20%，隨(sui)(sui)后進行標(biao)準(zhun)充電(dian)(dian)(dian)(dian)(dian)。鋰(li)離(li)(li)(li)子(zi)(zi)技(ji)術與(yu)SLA相比顯著提高了能量(liang)(liang)密度，在(zai)大多數情況(kuang)下足以(yi)(yi)防止鋰(li)離(li)(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)完全充滿(man)。

    安全電(dian)路

    每種電(dian)池(chi)(chi)技(ji)術均(jun)有(you)(you)其一整套安(an)全(quan)考慮。NiCd電(dian)池(chi)(chi)組(zu)帶(dai)有(you)(you)某種電(dian)流(liu)分斷(duan)設(she)備(bei)以防止(zhi)(zhi)發生(sheng)嚴重故障，這是(shi)優秀的(de)(de)(de)電(dian)池(chi)(chi)設(she)計必不可少的(de)(de)(de)。NiMH具有(you)(you)發熱的(de)(de)(de)化學性(xing)質(zhi)，因此電(dian)池(chi)(chi)中(zhong)需配有(you)(you)熱量感應設(she)備(bei)，與(yu)充電(dian)器相(xiang)聯系，防止(zhi)(zhi)過度充電(dian)，電(dian)池(chi)(chi)組(zu)本身還帶(dai)有(you)(you)電(dian)流(liu)分斷(duan)設(she)備(bei)。在(zai)鋰離(li)子電(dian)池(chi)(chi)組(zu)中(zhong)，一旦發生(sheng)過電(dian)壓，即有(you)(you)鋰金屬產生(sheng)。這說明電(dian)池(chi)(chi)中(zhong)應使(shi)用安(an)全(quan)電(dian)路，使(shi)充放電(dian)過程中(zhong)電(dian)池(chi)(chi)電(dian)壓保持在(zai)特(te)定的(de)(de)(de)范(fan)圍內(見圖(tu)3)。

    圖3.鋰離子電(dian)池組設計中需(xu)要采用電(dian)子安(an)全(quan)裝置(zhi)。電(dian)池組內(nei)還包(bao)含(han)電(dian)量(liang)監測裝置(zhi)和(he)充(chong)電(dian)電(dian)路(lu)。

    雖然SLA電(dian)池(chi)一般(ban)不需要外部安(an)全(quan)元件，但許多醫療設備制造(zao)商仍堅持將(jiang)不可復位保險(xian)(xian)絲(si)置(zhi)于(yu)電(dian)池(chi)內部或周圍。由(you)于(yu)大(da)部分SLA電(dian)池(chi)都帶有突出的(de)正(zheng)負極(ji)板(ban)，如果沒有保險(xian)(xian)絲(si)，當(dang)其(qi)(qi)置(zhi)于(yu)金屬板(ban)上(shang)時，就很容易發生短路(lu)，而金屬板(ban)大(da)量存(cun)在于(yu)醫療保健設備中。這些電(dian)池(chi)還可能出現其(qi)(qi)它短路(lu)的(de)危險(xian)(xian)。如果發生短路(lu)，裝置(zhi)即有爆炸的(de)可能。鋰離子電(dian)池(chi)組(zu)短路(lu)的(de)危險(xian)(xian)較小，安(an)全(quan)電(dian)路(lu)主要用于(yu)保護電(dian)池(chi)。

    在電池(chi)中加(jia)入安全(quan)(quan)電路增加(jia)了器械(xie)的(de)成本，耗費了更(geng)(geng)多的(de)空(kong)間。設計者必須認(ren)識到(dao)(dao)這些都是電池(chi)的(de)選擇過程中會考(kao)慮到(dao)(dao)的(de)權衡因(yin)素(su)。總的(de)來說，盡管有安全(quan)(quan)電路的(de)存在，鋰離子電池(chi)仍可以縮小電池(chi)組體積，減(jian)輕其重量(liang)(liang)，并(bing)能(neng)釋放更(geng)(geng)多的(de)能(neng)量(liang)(liang)。

    電(dian)量監測

    來越(yue)多的(de)(de)醫療(liao)器(qi)械制(zhi)造商(shang)開(kai)始采用鋰離(li)子技術，電(dian)池管理特(te)性在行業中也(ye)越(yue)來越(yue)常見。電(dian)量監(jian)測設備可以為終(zhong)端用戶(hu)提供(gong)一些信(xin)息，如電(dian)池預計使用時間等。管理特(te)性的(de)(de)引入，很大程(cheng)度上明確了電(dian)池電(dian)量評估及(ji)充電(dian)方案的(de)(de)執行。

    就電(dian)(dian)池(chi)管理而言，使用鋰離子電(dian)(dian)池(chi)的(de)(de)設計(ji)者有(you)多(duo)種選(xuan)擇方(fang)(fang)案。例如，一(yi)些(xie)鋰離子電(dian)(dian)池(chi)電(dian)(dian)量(liang)監測(ce)設備(bei)中含有(you)信(xin)息(xi)特(te)征，可以報告已(yi)經過的(de)(de)充放電(dian)(dian)循環次數。此類信(xin)息(xi)在一(yi)些(xie)重(zhong)要的(de)(de)醫療設備(bei)中具有(you)重(zhong)要作用。電(dian)(dian)量(liang)監測(ce)基本(ben)方(fang)(fang)法(fa)有(you)兩種：基于電(dian)(dian)壓和庫侖計(ji)數。將兩種技術相(xiang)結合的(de)(de)解決方(fang)(fang)案，其準(zhun)確性高(gao)達99%。

    耐高(gao)溫(wen)性

    鋰離子電池(chi)(chi)在40°-45°C的高溫(wen)條(tiao)件下，性能優于其它電池(chi)(chi)。SLA和NiMH電池(chi)(chi)在高熱量(liang)環(huan)境下無法正常(chang)工作。這成為(wei)其在急(ji)救工具中(zhong)使(shi)用(yong)的一個限制因(yin)素，因(yin)為(wei)此時，使(shi)用(yong)者無法將他們的便(bian)攜式(shi)器械保(bao)存在低(di)溫(wen)環(huan)境下。

    在為(wei)便攜式(shi)器(qi)械選擇最佳(jia)電源方案時，必須對其總成(cheng)本和整體性能進(jin)行評估(gu)。

    鋰(li)離子(zi)技術的高電(dian)(dian)壓特(te)性可以(yi)減少電(dian)(dian)池(chi)使用量，由此降(jiang)低了電(dian)(dian)池(chi)組的成本(ben)，使之與(yu)使用鎳技術的電(dian)(dian)池(chi)大致相當。此外(wai)，鋰(li)離子(zi)電(dian)(dian)池(chi)供(gong)應商不斷使用新材料，以(yi)降(jiang)低電(dian)(dian)池(chi)成本(ben)。

    鋰離子電池體積小、重(zhong)量輕(qing)、能量高、循(xun)環壽(shou)命長、耐(nai)久性(xing)好、電壓(ya)高及耐(nai)熱性(xing)好的特點使其具有潛在的優勢。醫(yi)療電子產(chan)品(pin)制造(zao)商可以利(li)用這些特性(xing)，拓(tuo)寬產(chan)品(pin)市場，并最終給消費者、醫(yi)療專業人員和病人帶(dai)來(lai)治療等方面的好處。