Ukukhetha ibhetri efanelekileyo yeeStuds zeNdlela zeSolar: iNi-MH vs. iLithium

Xa kufikwa kwii-solar road stud, ibhetri yeyona nto iphambili kwinkqubo. Igcina amandla abanjwe yi-photovoltaic panel emini kwaye inika amandla ii-LED ebusuku, imisela ngokuthe ngqo ukuba i-stud inokukhanyisa ixesha elingakanani indlela, ukuba isebenza ngokuthembekileyo kangakanani kwiimeko ezahlukeneyo zemozulu, kwaye kufuneka itshintshwe kangaphi. Namhlanje, kukho iikhemikhali ezimbini zebhetri ezilawula imarike: iNickel-Metal Hydride (Ni-MH) kunye neLithium (ngesiqhelo iLi-ion okanye iLiFePO₄). Ukuqonda umahluko wazo kubalulekile ekukhetheni i-solar road stud efanelekileyo kwiprojekthi yakho ethile, nokuba yindlela enkulu, indawo yokuwela abahambi ngeenyawo, okanye indlela yeenqwelo moya.

Iibhetri zeNi-MH bezisoloko zisetyenziswa kakhulu kwii-solar road stud kangangeminyaka emininzi. Zixatyiswa ngenxa yokuqina kwazo nokhuseleko lwazo. Enye yezona zinto zinamandla kwi-Ni-MH chemistry kukukwazi kwayo ukunyamezela amaqondo obushushu agqithisileyo, ingakumbi imozulu ebandayo. Ngelixa iibhetri ze-lithium zisokola ukutshaja ngaphantsi kwe-frozen, iiseli zeNi-MH zinokusebenza kwaye zitshaje ngokuthembekileyo kumaqondo obushushu aphantsi njenge--20°C ngaphandle kweesekethe zokhuseleko ezikhethekileyo. Oku kwenza iNi-MH ibe lukhetho oluthembekileyo kwiindawo ezifumana ubusika obunzima. Ukongeza, iibhetri zeNi-MH zizinzile kwaye azibeki mngcipheko wokubaleka okanye umlilo, nokuba i-road stud iqhekeke sisithuthi esinzima. Zikwafikeleleka ngakumbi kwangaphambili, nto leyo enokuba yinto ethatha isigqibo kwiiprojekthi ezinkulu zeziseko zophuhliso zikawonke-wonke ezineebhajethi ezingqongqo. Nangona kunjalo, iibhetri zeNi-MH zinemida. Zinobunzima obuphantsi bamandla, oko kuthetha ukuba zinzima kwaye zinkulu kakhulu kumthamo ofanayo wokugcina. Oku kuthintela indlela i-solar road stud enokuba ncinci kwaye incinci ngayo. Okubaluleke ngakumbi, iibhetri zeNi-MH zinengxaki yokuzikhupha phezulu: zinokulahlekelwa lishumi elinesihlanu ukuya kumashumi amabini ekhulwini lentlawulo yazo egciniweyo ngenyanga xa zingasebenzi. Emva kweentsuku ezininzi ezilandelelanayo ezinamafu, i-stud esebenza nge-Ni-MH isenokungakhanyi ubusuku bonke. Ubomi bayo bomjikelo buhlala bumalunga namakhulu amahlanu ukuya kwamakhulu asibhozo, nto leyo eyaneleyo kodwa ayibonakali.

Iibhetri zeLithium, ingakumbi uhlobo lweLithium Iron Phosphate (LiFePO₄), ziye zaba ngumgangatho wanamhlanje wee-solar road stud eziphambili. Inzuzo yazo ephambili ikuxinano lwamandla. Ibhetri yeLithium inokugcina inani elifanayo lamandla kwiphakheji ekhaphukhaphu engama-40 ukuya kuma-50 ekhulwini kwaye incinci kakhulu kuneNi-MH elinganayo. Oku kuvumela abavelisi ukuba bavelise ii-studs zendlela eziphantsi, eziguquguqukayo ezinokuthi zingakhutshwa lula zii-snowplow okanye iimoto ezininzi. Iibhetri zeLithium zikwagqwesa ekusebenzeni kwazo, zilahlekelwa ziipesenti ezimbini ukuya kwezintathu kuphela zetshaja yazo ngenyanga. Ngenxa yoko, i-solar road stud exhotyiswe ngamandla e-lithium inokuhlala isebenza emva kweveki epheleleyo yesibhakabhaka esigqunywe yimvula, ibonelela ngokukhanya okuqhubekayo xa ifuneka kakhulu. Ngaphezu koko, iibhetri zeLithium zibonelela ngobomi obude kakhulu bomjikelo, zihlala zifikelela kwimijikelo yokukhupha itshaja engama-1500 ukuya kuma-2500. Oku kuthetha ukuba zinokuhlala ixesha elide kathathu ukuya kwesine kuneebhetri zeNi-MH ngaphambi kokuba zifune ukutshintshwa, nto leyo enciphisa iindleko zokugcinwa kwexesha elide. Enye inzuzo kukuphuma kombane okuzinzileyo: iiseli ze-lithium zinika umbane ophantse ungaguquki de ziphele phantse ngokupheleleyo, ngoko ke ii-LED zikhanya ngokukhanya okupheleleyo ubusuku bonke endaweni yokuba zifiphale kancinci kancinci.

Nangona kunjalo, iibhetri ze-lithium azinazo iingxaki. Ubuthathaka bazo obukhulu bububuthathaka kumaqondo obushushu aphantsi ngexesha lokutshaja. Ngaphantsi kwe-0°C, ukutshaja ibhetri ye-lithium eqhelekileyo kunokubangela umonakalo ongunaphakade. Ngelixa iiseli ze-LiFePO₄ ziphucula ukusebenza kwamaqondo obushushu aphantsi, zisafuna iinkqubo zolawulo lwebhetri ezakhelwe ngaphakathi eziyekisa ukutshaja kwiimeko zokuqandisa okanye zisebenzise amandla amancinci agciniweyo ukufudumeza iiseli kuqala. Oku kongeza ubunzima kunye neendleko. Ukongeza, iibhetri ze-lithium zinexabiso eliphezulu ngaphambili, ngokuqhelekileyo zingaphezulu kwamashumi amathathu ukuya kwamashumi amahlanu ekhulwini kune-Ni-MH. Iiseli ze-lithium ezikumgangatho ophantsi nazo zinokubangela umngcipheko wokhuseleko ukuba isekethe yokukhusela iyasilela, nangona abavelisi abaziwayo benciphisa oku ngoyilo oluqinileyo.

Ngoko ke yeyiphi ibhetri omele uyikhethe kwiistuds zakho zendlela zelanga? Impendulo ixhomekeke ngokupheleleyo kwimozulu yakho yasekuhlaleni, iimfuno zokusebenza, kunye nohlahlo-lwabiwo mali. Kwimimandla enebusika obuhlala ixesha elide obungaphantsi kwe-zero, i-Ni-MH ihlala ilukhetho olukhuselekileyo nolungabizi kakhulu kuba inokutshaja ngaphandle kokhuseleko olukhethekileyo. Kwimozulu ephakathi ukuya kweshushu, okanye kwizicelo apho iprofayili encinci kunye nokuzimela okude zizinto eziphambili, i-lithium - ngakumbi i-LiFePO₄ - lukhetho oluphezulu. Ukuzikhupha kwayo okuphantsi, ubomi bomjikelo omde, kunye nokukhanya okuzinzileyo kubonelela ngexabiso elingcono kulo lonke ixesha lomkhiqizo. Ekugqibeleni, zombini iintlobo zebhetri zibonakalise ukuthembeka kwazo kwizigidi zeestuds zendlela zelanga kwihlabathi liphela. Ngokuqonda iimpawu zazo ezizodwa, ungenza isigqibo esinolwazi esigcina iindlela zakho zikhuselekile, ixesha elide.