Xa izixhobo zidinga ixesha elide, ukusebenza okuphezuluIpakethi yebhetri yeLifePo4, kufuneka balungelelanise iseli nganye. 
Kutheni le nto ipakethe yebhetri ye-LifePo4 ifuna ukulinganisa ibhetri? Iibhetri ze-LifePo4 ziphantsi kweempawu ezininzi ezifana nokugqithiswa kwamandla, umbane ongaphantsi kwamandla, i-overcharge kunye ne-dicharge current, i-thermal runaway kunye nokungalingani kwamandla ebhetri. Enye yezona zinto zibalulekileyo kukungalingani kweeseli, ezitshintsha amandla ombane weseli nganye kwipakethi ngokuhamba kwexesha, ngaloo ndlela inciphisa ngokukhawuleza umthamo webhetri. Xa ipakethe yebhetri ye-LifePo4 yenzelwe ukusebenzisa iiseli ezininzi kuthotho, kubalulekile ukuyila iimpawu zombane ukuze uhlale ulungelelanisa i-voltages yeeseli. Oku akukona nje ukusebenza kwebhetri yepakethe, kodwa kunye nokwandisa umjikelo wobomi. Isidingo semfundiso kukuba ukulinganisa ibhetri kwenzeka ngaphambi nasemva kokuba ibhetri yakhiwe kwaye kufuneka yenziwe kumjikelo wobomi bebhetri ukuze kugcinwe ukusebenza kwebhetri ngokufanelekileyo! Ukusetyenziswa kokulinganisa ibhetri kusivumela ukuba siyile iibhetri ezinomthamo ophezulu wezicelo kuba ukulinganisa kuvumela ibhetri ukuba ifikelele kwimo ephezulu yentlawulo (SOC). Unokuba nomfanekiso-ngqondweni wokudibanisa iiyunithi ezininzi zeeSeli ze-LifePo4 kuthotho ngokungathi utsala isileyi ngezinja ezininzi zesileyi. Isileyi sinokutsalwa kuphela ngobuchule obukhulu ukuba zonke izinja ezileyiweyo zibaleka ngesantya esifanayo. Ngezinja ezine ngesileyi, ukuba inja enye yesileyi ibaleka kancinane, ke ezinye ezintathu izinja zesileyi kufuneka nazo zinciphise isantya sazo, ngaloo ndlela zinciphisa ukusebenza kakuhle, kwaye ukuba inja enye yesileyi ibaleka ngokukhawuleza, iya kuphelela ekutsaleni umthwalo wezinye izinja ezintathu zesileyi. ukuzenzakalisa. Ngoko ke, xa iiseli ezininzi ze-LifePo4 zixhunyiwe kuchungechunge, amaxabiso ombane azo zonke iiseli kufuneka alingane ukuze afumane ibhetri ye-LifePo4 esebenzayo ngakumbi. 
Ibhetri ye-LifePo4 yegama ilinganiswe malunga ne-3.2V kuphela, kodwa ngaphakathiIinkqubo zokugcina amandla ekhaya, izixhobo zombane eziphathwayo, i-industrial, i-telecom, isithuthi sombane kunye nezicelo ze-microgrid, sifuna phezulu kakhulu kunombane oqhelekileyo. Kwiminyaka yakutshanje, iibhetri ze-LifePo4 ezihlawulelwayo zidlale indima ebalulekileyo kwiibhetri zamandla kunye neenkqubo zokugcina amandla ngenxa yobunzima bokukhanya, ubuninzi bamandla, ubomi obude, umthamo ophezulu, ukutshaja ngokukhawuleza, amanqanaba aphantsi okuzikhupha kunye nobuhlobo bendalo. Ukulinganisa iiseli kuqinisekisa ukuba i-voltage kunye nomthamo weseli nganye ye-LifePo4 ikwinqanaba elifanayo, ngaphandle koko, uluhlu kunye nobomi bebhetri ye-LiFePo4 iya kuncitshiswa kakhulu, kwaye ukusebenza kwebhetri kuya kuthotywa! Ke ngoko, ibhalansi yeseli ye-LifePo4 yenye yezona zinto zibalulekileyo ekumiseleni umgangatho webhetri. Ngexesha lokusebenza, i-gap encinci iya kwenzeka, kodwa sinokuyigcina kuluhlu olwamkelekileyo ngokusebenzisa ukulinganisa kweeseli. Ngexesha lokulinganisa, iiseli zamandla aphezulu zihlawulela umjikelo opheleleyo / wokukhupha. Ngaphandle kokulinganisa iseli, iseli enomthamo ocothayo yindawo ebuthathaka. Ukulinganisa iiseli ngomnye wemisebenzi engundoqo ye-BMS, kunye nokubeka iliso lobushushu, ukutshaja kunye neminye imisebenzi enceda ukwandisa ubomi bepakethi. Ezinye izizathu zokulinganisa ibhetri: LifePo4 ibhetri pcak ukusetyenziswa kwamandla okungaphelelanga Ukufunxa umsinga ongaphezulu kunokuba ibhetri yenzelwe okanye ukushokoxeka kwebhetri kunokubangela ukusilela kwangaphambi kwexesha. Xa ipakethe yebhetri ye-LifePo4 ikhupha, iiseli ezibuthathaka ziya kukhupha ngokukhawuleza kuneeseli ezisempilweni, kwaye ziya kufikelela kumbane omncinci ngokukhawuleza kunezinye iiseli. Xa iseli ifikelela kwi-voltage encinci, yonke ipakethe yebhetri iyanqanyulwa kumthwalo. Oku kubangela umthamo ongasetyenziswanga wamandla ebhetri. Ukuthotywa kweeseli Xa iseli ye-LifePo4 itshajiswe ngaphezulu nangaphezulu kwexabiso layo elicetyisiweyo kunye nenkqubo yobomi beseli iye iyancipha. Njengomzekelo ukunyuka okuncinci kwi-voltage yokutshaja ukusuka kwi-3.2V ukuya kwi-3.25V kuya kuphula ibhetri ngokukhawuleza nge-30%. Ke ukuba ulungelelwaniso lweseli aluchanekanga kananjalo ukutshaja okuncinci kuya kunciphisa ixesha lokuphila kwebhetri. UkuTshaja okungaphelelanga kwePakhi yeSeli Iibhetri ze-LifePo4 zihlawuliswa ngokuqhubekayo ngoku phakathi kwe-0.5 kunye ne-1.0 yemilinganiselo. Umbane webhetri ye-LifePo4 uyenyuka njengoko ukutshaja kuhambela phezulu xa kuhlawulwe ngokupheleleyo emva kokuwa. Cinga ngeeseli ezintathu ezine-85 Ah, 86 Ah, kunye ne-87 Ah ngokulandelanayo kunye ne-100 yeepesenti ze-SoC, kwaye zonke iiseli zisemva kokuba zikhutshiwe kwaye i-SoC yazo iyancipha. Ungafumanisa ngokukhawuleza ukuba iseli 1 iphelela ekubeni yeyokuqala ukuphelelwa ngamandla ngenxa yokuba inamandla asezantsi. Xa amandla efakwe kwiipakethi zeeseli kunye nalaaa sele ekhona ahamba ngeeseli, kwakhona, iseli 1 ijinga ngasemva ngexesha lokutshaja kwaye inokuthathelwa ingqalelo ukuba ihlawuliswe ngokupheleleyo njengoko ezinye iiseli ezimbini ezahlukeneyo zihlawuliswa ngokupheleleyo. Oku kuthetha ukuba iiseli ze-1 zinokuncitshiswa kweCoulometric Effectiveness (CE) ngenxa yokuzifudumeza kweseli okubangela ukungalingani kweeseli. I-Thermal Runaway Eyona ndawo imbi kakhulu enokuthi yenzeke kukubaleka kwe-thermal. Njengoko siqondaiiseli lithiumzinochuku kakhulu ekutshajisweni nasekukhupheni ngaphezulu. Kwipakethi yeeseli ezi-4 ukuba iseli enye yi-3.5 V ngelixa ezinye ezahlukeneyo ziyi-3.2 V intlawulo ngokuqinisekileyo iya kuhlawula zonke iiseli kunye ngenxa yokuba zikuthotho kwaye iya kuhlawulisa i-3.5 V yeseli ibe mkhulu kunombane ocetyisiweyo ngenxa yokuba ezahlukeneyo ezinye iibhetri zisafuna ukutshaja.Oku kukhokelela ekubalekeni kwe-thermal xa ixabiso lemveliso yobushushu bangaphakathi lidlula izinga apho ukufudumala kunokukhutshwa khona.Oku kubangela ukuba ipakethi yebhetri ye-LifePo4 ingalawuleki. Zeziphi izinto ezibangela ukuba iSeli ingalungelelanisi kwiipakethi zebhetri? Ngoku siyaqonda ukuba kutheni ukugcina zonke iiseli zilungelelene kwipakethi yebhetri kubalulekile. Nangona kunjalo ukulungisa ingxaki ngokufanelekileyo kufuneka sazi ukuba kutheni iiseli zifumana ngokungalungelelananga okokuqala. Njengoko bekutshiwo ngaphambili xa ipakethi yebhetri yenziwe ngokubeka iiseli kuthotho iyaqinisekiswa ukuba zonke iiseli zihlala zikumanqanaba ombane afanayo. Ke ibhetri entsha iya kuhlala ineeseli ezilungeleleneyo. Nangona kunjalo njengoko ipakethe isetyenziswa iiseli ziyaphuma kwi-balance ngenxa yokuthobela izinto. Ukwahluka kwe-SOC Ukulinganisa i-SOC yeseli kunzima; kungoko kuntsonkothile kakhulu ukulinganisa iSOC yeeseli ezithile ebhetrini. Eyona ndlela ifanelekileyo yokungqinelanisa iiseli kufuneka ihambelane neeseli zeSOC enye endaweni yomthamo wombane ofanayo (OCV) degrees. Kodwa kuba phantse akunakwenzeka ukuba iiseli zihambelane kuphela namagama ombane xa kusenziwa ipakethi, ukwahluka kwi-SOC kunokubangela uhlengahlengiso kwi-OCV ngexesha elifanelekileyo. Ukwahluka kokumelana kwangaphakathi Kunzima kakhulu ukufumana iiseli ezifanayo zaNgaphakathi (IR) kwaye njengeminyaka yebhetri, i-IR yeseli nayo iyatshintshwa kwaye ke ngoko kwipakethi yebhetri ayizizo zonke iiseli eziya kuba ne-IR efanayo. Njengoko siqonda i-IR yongeza kwi-insusceptibility yangaphakathi yeseli emisela ustrimisho lwangoku ngeseli. Ngenxa yokuba i-IR iyahluka okwangoku ngeseli kwaye i-voltage yayo nayo iyahluka. Inqanaba lobushushu Ukuhlawula kunye nokukhulula amandla eseli nako kuxhomekeke kubushushu obuyingqongileyo. Kwi-pack yebhetri ebalulekileyo njengee-EVs okanye i-solar arrays, iiseli zisasazwa phezu kwendawo yenkunkuma kwaye kunokubakho ukwahlukana kweqondo lokushisa phakathi kwepakethi ngokwayo eyenza iseli enye ukuba ihlawule okanye ikhuphe ngokukhawuleza kuneeseli eziseleyo ezibangela ukungalingani. Ukusuka kwezi zinto zingasentla, kucacile ukuba asinakukwazi ukuthintela iiseli ukuba zingalingani kuyo yonke inkqubo. Ke, ekuphela konyango kukusebenzisa inkqubo yangaphandle efuna ukuba iiseli zilungelelane kwakhona emva kokuba zingalungelelananga. Le nkqubo ibizwa ngokuba yiBattery Balancing System. 
Uyifumana njani ibhalansi yebhetri yeLiFePo4? Inkqubo yoLawulo lwebhetri (BMS) Ngokubanzi iLiFePo4 ibhetri ipakethe ayinakufezekisa ukulingana kwebhetri ngokwayo, inokufezekiswa ngayoinkqubo yokulawula ibhetri(BMS). Umenzi webhetri uya kudibanisa umsebenzi wokulinganisa ibhetri kunye neminye imisebenzi yokukhusela efana nentlawulo yokukhusela i-voltage, isalathisi se-SOC, i-alamu yokushisa ngaphezulu / ukukhusela, njl. kule bhodi ye-BMS. Itshaja yebhetri yeLi-ion enomsebenzi wokulinganisa Ikwabizwa ngokuba yi “balance battery tshaja”, itshaja idibanisa umsebenzi webhalansi ukuxhasa iibhetri ezahlukeneyo ezinobalo lweentambo ezahlukeneyo (umz. 1~6S). Nokuba ibhetri yakho ayinayo ibhodi ye-BMS, ungayitshaja ibhetri ye-Li-ion ngale tshaja yebhetri ukuphumeza ulungelelwaniso. Ibhodi yokulinganisa Xa usebenzisa itshaja yebhetri elungeleleneyo, kufuneka kwakhona uqhagamshele itshaja kunye nebhetri yakho kwibhodi yokulinganisa ngokukhetha isokethi ethile kwibhodi yokulinganisa. Imodyuli yeSekethe yoKhuseleko (PCM) Ibhodi ye-PCM yibhodi ye-elektroniki edibaniswe ne-LiFePo4 ibhetri yepakethe kwaye umsebenzi wayo oyintloko kukukhusela ibhetri kunye nomsebenzisi ekusebenzeni kakubi. Ukuqinisekisa ukusetyenziswa ngokukhuselekileyo, ibhetri yeLiFePo4 kufuneka isebenze phantsi kweeparamitha zombane ezingqongqo kakhulu. Ngokuxhomekeke kumenzi webhetri kunye nekhemistri, le parameter ye-voltage iyahluka phakathi kwe-3.2 V kwiseli nganye yeebhetri ezikhutshweyo kunye ne-3.65 V ngeseli nganye kwiibhetri ezinokutsha. ibhodi ye-PCM ibeka esweni ezi parameters zombane kwaye ikhuphe ibhetri kumthwalo okanye itshaja ukuba zigqithile. Kwimeko yebhetri ye-LiFePo4 enye okanye iibhetri ezininzi ze-LiFePo4 ezixhunywe ngokufanayo, oku kufezwa ngokulula kuba ibhodi ye-PCM ibeka iliso kwii-voltages zomntu ngamnye. Nangona kunjalo, xa iibhetri ezininzi zixhunyiwe kuthotho, ibhodi yePCM kufuneka ibeke iliso kumbane webhetri nganye. Iindidi zeBattery Balancing Iindlela ezahlukeneyo zokulinganisa ibhetri ziphuhliselwe iLiFePo4 ibhetri ipakethi. Yahlulahlulwe yaziindlela zokulinganisa ibhetri esebenzayo kunye nesebenzayo esekwe kumbane webhetri kunye neSOC. 
Ulungelelwaniso lweBattery yePassive Ubuchule bokulinganisa ibhetri bokwahlula intlawulo engaphezulu kwibhetri yeLiFePo4 esebenza ngokupheleleyo ngezinto ezixhathisayo kwaye inika zonke iiseli intlawulo efanayo kweyona bhetri iphantsi yeLiFePo4. Obu buchule buthembeke ngakumbi kwaye busebenzisa amacandelo ambalwa, ngaloo ndlela kunciphisa iindleko zenkqubo iyonke. Nangona kunjalo, itekhnoloji inciphisa ukusebenza kakuhle kwenkqubo njengoko amandla achithwa ngendlela yobushushu obudala ukulahleka kwamandla. Ngoko ke, le teknoloji ifanelekile kwizicelo zamandla aphantsi. 
Ulungelelwaniso lwebhetri olusebenzayo Ukulinganisa intlawulo esebenzayo sisisombululo kwimingeni ehambelana neebhetri zeLiFePo4. Indlela esebenzayo yokulinganisa iseli ikhupha intlawulo kwibhetri yeLiFePo4 yamandla aphezulu kwaye iyigqithisele kwibhetri yeLiFePo4 yamandla asezantsi. Xa kuthelekiswa nobuchwepheshe be-cell balancing technology, obu buchule bugcina amandla kwimodyuli yebhetri ye-LiFePo4, ngaloo ndlela kwandisa ukusebenza kakuhle kwenkqubo, kwaye ifuna ixesha elincinci lokulinganisela phakathi kweeseli ze-LiFePo4 zebhetri, ezivumela ukutshaja okuphezulu. Naxa ipakethe yebhetri yeLiFePo4 iphumle, nokuba iibhetri zeLiFePo4 ezihambelana ngokugqibeleleyo ziphulukana nentlawulo ngamaxabiso ahlukeneyo kuba isantya sokuzikhupha siyahluka ngokuxhomekeke kwiqondo lobushushu: ukonyuka nge-10 ° C kwiqondo lobushushu bebhetri sele kuliphinda kabini isantya sokuzikhupha. . Nangona kunjalo, ukulinganisa intlawulo esebenzayo kunokubuyisela iiseli kwi-equilibrium, nokuba ziphumle. Nangona kunjalo, obu buchule bunomjikelezo onzima, onyusa iindleko zenkqubo iyonke. Ngoko ke, ukulinganisa kweeseli ezisebenzayo kulungele ukusetyenziswa kwamandla aphezulu. Kukho ii-topology ezahlukeneyo zesekethe yokulinganisa esebenzayo ezihlelwe ngokwamacandelo okugcina amandla, njenge-capacitors, i-inductors/transformers, kunye nabaguquli be-elektroniki. Ngokubanzi, inkqubo yokulawula ibhetri esebenzayo inciphisa ixabiso elipheleleyo leebhetri zeLiFePo4 ngenxa yokuba ayifuni ukugqithiswa kweeseli ukuhlawulela ukusabalalisa kunye nokuguga okungalinganiyo phakathi kweebhetri zeLiFePo4. Ulawulo olusebenzayo lwebhetri luba lubaluleko xa iiseli ezindala zitshintshwa ngeeseli ezintsha kwaye kukho umahluko omkhulu phakathi kwebhetri yepakethe yeLiFePo4. Ekubeni iinkqubo zokulawula ibhetri esebenzayo zenza ukuba kube lula ukufaka iiseli ezineenguqu ezinkulu zeparameter kwiipakethi zebhetri ze-LiFePo4, imveliso yokuvelisa inyuka ngelixa iwaranti kunye neendleko zokugcinwa ziyancipha. Ngoko ke, iinkqubo zokulawula ibhetri esebenzayo zixhamla ukusebenza, ukuthembeka kunye nokukhuseleka kwebhetri yepakethe, ngelixa kunceda ukunciphisa iindleko. Shwankathela Ukuze kuncitshiswe iziphumo zokukhukuliseka kombane weeseli, ukungalingani kufuneka kumodareyithwe ngokufanelekileyo. Injongo yaso nasiphi na isisombululo sokulinganisa kukuvumela ipakethe yebhetri ye-LiFePo4 ukuba isebenze kwinqanaba elijoliswe kuyo yokusebenza kunye nokwandisa amandla ayo akhoyo. Ukulinganisa ibhetri akubalulekanga kuphela ekuphuculeni ukusebenza kunyeumjikelo wobomi beebhetri, yongeza kwakhona into yokhuseleko kwipakethi ye-LiFePo4battery. Enye yeetekhnoloji ezivelayo zokuphucula ukhuseleko lwebhetri kunye nokwandisa ubomi bebhetri. Njengoko itekhnoloji entsha yokulinganisa ibhetri ilandelela umyinge wolungelelwaniso olufunekayo kwiiseli zeLiFePo4, yandisa ubomi bebhetri yepakethe yeLiFePo4 kwaye iphucula ukhuseleko lwebhetri lulonke.
Ixesha lokuposa: May-08-2024