Indlela yokufezekisa imveliso ephathekayo ye-lithium ibhetri

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - ተንቀሳቃሽ የኃይል ጣቢያ አቅራቢ

Inkcazo: Eli nqaku lisebenzisa imizekelo ukuchaza indlela yokufikelela iibhetri zemveliso ephathekayo. Amagama angundoqo: imveliso ephathekayo; umlawuli womgca; i-buck-boost converter; ibhetri kwiimveliso ezininzi eziphathwayo ezifana phones eziphathwayo, phones smart, abadlali eendaba yedijithali, okanye iikhamera yedijithali umkhondo Development. Oku kudla ngokuphunyezwa ngokusetyenziswa kweminye imisebenzi kunye neesekethe ze-analog eziyinkimbinkimbi, kodwa umphumo kukusetyenziswa kwamandla aphezulu kwisekethe yesicelo.

Ngomthamo omtsha webhetri unokuhlangabezana neemfuno ezikhulayo zokusetyenziswa kwamandla, kodwa oku kufanele ukuba kumthamo omkhulu webhetri okanye ukuphuculwa kweteknoloji yebhetri. Ngokuqhelekileyo, abantu abayi kukhetha ukwandisa ubungakanani bebhetri kuba i-casing yangaphandle ilinganiselwe. Kuba ukuqhubela phambili kobuchwepheshe bebhetri kunye nophuhliso lobuchwephesha obutsha akuhlangabezani neemfuno zamandla aphezulu akwinqanaba lobungakanani obufanayo, iisekethe zolawulo lwamandla ezihambele phambili kakhulu kufuneka zibe phambili ngakumbi.

Kwangaxeshanye, imfuno yezisombululo ezincinci yenza lo mngeni ubenzima. Ngaphambili, ukuze ufumane iimfuno, sebenzisa nje abalawuli abaliqela. Aba balawuli baqhagamshelwe ngokuthe ngqo kwibhetri ukubonisa umzila kaloliwe wombane wenkqubo efunekayo.

Iiyunithi ezininzi zolawulo lwamandla ezisetyenziswa kwiimveliso eziphathwayo zisebenzise kuphela izilawuli ezithile zomgca ukulawula ukusetyenziswa kwamandla. Ithekhnoloji yebhetri eqhelekileyo esetyenzisiweyo ziibhetri ezi-3 ze-NICD okanye ze-NIMH. Ngelo xesha, ezi zixhobo zeekhemikhali ziye zaphantse zonke ngebhetri enye ye-lithium ion kuba ezi bhetri ze-lithium-ion zinomsebenzi ophezulu.

Ngezicelo ezininzi ezinyukayo kwimfuno yangoku, ezinye izilawuli zemigca ziye zathatyathelwa indawo ziziguquli ezibiza kakhulu kodwa ezisebenza kakuhle. Ezinye zeereyile zamandla ezinjenge processor kernel kunye ne-I / O zihlala zinje. Ekubeni i-linear regulator kunye ne-buck converter inokulungelelanisa kuphela i-voltage ephumayo xa i-voltage yegalelo layo liphezulu, ukuba i-voltage yebhetri ithotywe kwi-voltage ephumayo ehleliweyo, emva koko inkqubo icinyiwe.

Ubuncinci bokuhla koxinzelelo lwe-linear regulator okanye i-press drop drop margin kwi-inductance kunye nokutshintsha kufuneka kufakwe kwi-voltage ephumayo. Ke ngoko, kukho umzila kaloliwe oqhelekileyo we-3.3V osuka kwibhetri ye-lithium-ion, kwaye umbane oqhelekileyo webhetri wenkqubo yi-3.

4V. Umbane oseleyo owenzeka xa ukhutshelwe kwi-3.0V awuyi kusetyenziswa kule meko.

Ukulinganisa kubonisa ukuba amandla asele kwibhetri ye-lithium ion yangoku malunga ne-10%. Oko kukuthi, nasiphi na isisombululo solawulo lwamandla esinokusebenzisa lo mbane ushiyekileyo kufuneka sikwazi ukukhupha i-10% ukusebenza kakuhle emva kokusebenza okuphezulu kokuguqulwa kwe-buck converter. Ngamanye amazwi, nasiphi na esinye isisombululo esisebenzisa i-97% yeavareji yobuchule bokuguqula ibhaki kufuneka sisetyenziswe ubuncinane esinye esingaphezulu kwama-87% eavareji yobuchule bokwandisa ixesha lokutshaja ibhetri.

Lo ngumceli mngeni omkhulu kwizisombululo ezininzi zokuguqula i-buck-boost. Ukuphumelela ngokubanzi kwe-SEPIC okanye izisombululo ezibuyisela umva kwisisombululo esisebenzayo soqoqosho 85% uluhlu oluphezulu. Ukuze kufumaneke oku kusebenza kakuhle, kuqwalaselwe indlela yokusebenzisa iindidi eziphuculweyo eziphuculweyo, ezifana nokulungiswa kwe-synchronous, kwaye ubungakanani besi sisombululo bukhulu kunomguquleli we-buck.

I-4 Tshintshela iBucking - Ukuguqulwa kweBoot Kuhlala kukho utshintsho ezimbini ngaxeshanye, kwisisombululo esiphuculwe kakhulu, ukusebenzisa le buck iguqulwe iya kuba nokusebenza okufanayo (85%). Ke ngoko, kulo mbono, sebenzisa i-buck-boost converter ayisebenzi, kwaye kungenxa yesi sizathu ukuba abantu abakaze bacinge ukusebenzisa lo mguquli webhanti. Nangona kunjalo, zikho ezinye iingxaki.

Umzekelo, iiselfowuni zisebenzisa ii-pulses zangoku eziphezulu ngexesha lokuhanjiswa kwedatha ukuqhuba iRF-PA yazo. Le misinga ye-pulse inokufumaneka ngokuthe ngqo kwibhetri, enokubangela ukuhla koxinzelelo olongezelelweyo kwi-impedance yebhetri kunye nesixhumi sebhetri. Ngenxa yombane ophantsi wonikezelo, oku kunokubangela ukuba i-voltage monitor ivale inkqubo xa kukho i-pulse yangoku.

Usetyenziso lwe-LED olusekwe kwii-LED kwifowuni yakho, okanye uqalise i-hard drive yakho kwisixhobo sakho somdlali wemidiya, uya kuba nefuthe elifanayo kwibhetri. Ngenxa yokwaluphala okanye ubushushu obuphantsi iziphumo kunyuso olutsha lwe-impedance yebhetri yenza ezi ngxaki zibe mbi ngakumbi. Kule meko, isiguquli se-buck-boost sinokusetyenziselwa ukujongana nokuhla kwamandla ombane kwisistim engundoqo kaloliwe.

Oku kwenza inkqubo isebenze ngakumbi kwaye ithembekile, kwaye ukukhutshwa kombane osezantsi webhetri nako kuvunyelwe. Ukongeza, ibhetri nayo iphuculwe. Ngokuqhelekileyo, umthamo omtsha webhetri uya kuhamba kunye nokusetyenziswa koluhlu olubanzi lweevoltages eziphumayo.

Ngokomzekelo, ngeteknoloji yebhetri ye-lithium ion yexesha elizayo, ibhetri inokuhlawuliswa ukuya kuthi ga kwi-4.5 V, kwaye inokukhutshwa iphantsi njenge-2.3V.

Thatha i-voltage ephakathi 3.4V, enokwenza umthamo webhetri ukwimeko engasetyenziswanga. Kukho kwakhona iteknoloji yebhetri ekwinqanaba lophuhliso, iya kusebenza kakuhle ngaphantsi kwe-3.

4V (umzekelo, Li-s). Kule meko, ngokuqinisekileyo iya kuhla - ikhulise ukuguqulwa. Enye indlela elula yokusombulula le ngxaki kukuvelisa umzila kaloliwe wombane ophezulu wenkqubo (umzekelo.

g., 5V) enokusetyenziselwa ukuvelisa zonke iileyili zamandla ombane wenkqubo, aphezulu kunombane wokucuka webhetri. Lo msebenzi unokwenziwa ngokusebenzisa isiguquli esikhulu esisebenzayo esinamandla kunye nesiguquli se-cascading.

Uguqulo lwamandla lulonke lusebenza kakuhle lunokufikelela ngokulula ngaphezu kwe-90%. Ngelishwa, abaguquli bokunyusa ngakumbi bafuna indawo engaphezulu, kwaye bahlala bengenayo indawo enjalo kwizixhobo eziphathwayo eziphathwayo. Enye inketho kukusebenzisa i-buck-boost converter ukuvelisa umzila we-voltage yenkqubo ngokuthe ngqo kwibhetri.

Njengoko kukhankanyiwe ngasentla, ukusebenza kakuhle kokuguqulwa kwamandla yinto ephambili ekuyileni isisombululo sokulawula amandla okukhuphisana. Enye into ebalulekileyo bubungakanani besisombululo. Ukuthathela ingqalelo oku, isisombululo sokutshintsha inyathelo-ezantsi-sokunyusa esekwe kwi-Sepic okanye i-reverse topology ayifanelekanga kuba inezinto ezinkulu ezingenzi nto, kwaye ihlala iphantsi ekusebenzeni.

Isisombululo esisodwa se-inductive usebenzisa ii-4 switches sinamandla amakhulu okuhlangabezana nezi mfuno. Nangona kunjalo, ngendlela elula yomqhubi, kukho iinguqu ezimbini ngamaxesha onke asebenzayo ngexesha elifanayo, kodwa sebenzisa esi sisombululo kungekhona nje ukusebenza kakuhle kwedini, kodwa kwakhona kuphuculwe iimfuno ze-inductance kunye nobukhulu bokutshintsha, kuba kukho ukuhamba ngokusebenzisa La macandelo aphezulu e-RMS yangoku. Kuphela icala lezi zitshintshi liqhutywa kuphela, oku kuthetha ukuba uhlala eqhuba isixhobo kunye ne-step-down okanye i-boost converter ukufezekisa ukusebenza kakuhle kakhulu, kunye ne-RSM yangoku ephantsi izisa ubungakanani besisombululo esincinci.

Kule meko, i-buck kunye nokuguqulwa kokunyusa kuneyona ndawo iphezulu yokusebenza kakuhle kwiitoplogi ezimbini. Oku kubonisiwe kumzekelo wobudlelwane bokusebenza kunye nokonyuswa (TPS61020) kunye nebhaki (TPS62046) ijiko lokufaka amandla ombane elibonisa oku. .