Kodi Kulinganiza Kwa Ma Cell Kumakulitsa Moyo Wa Battery Pack wa LifePo4?

Pamene zipangizo zimafuna nthawi yayitali, yogwira ntchito kwambiriLifePo4 batire paketi, amafunika kulinganiza selo lililonse. Chifukwa chiyani paketi ya batri ya LifePo4 ikufunika kusanja kwa batri? Mabatire a LifePo4 amakhala ndi zinthu zambiri monga kuchulukirachulukira, kutsika mphamvu, kuchulukirachulukira ndi kutulutsa pakali pano, kuthawa kwamafuta komanso kusalinganiza kwamagetsi a batri. Chimodzi mwazinthu zofunika kwambiri ndi kusalinganika kwa ma cell, komwe kumasintha mphamvu ya cell iliyonse mu paketi pakapita nthawi, potero kuchepetsa mphamvu ya batri. Battery ya LifePo4 ikapangidwa kuti igwiritse ntchito ma cell angapo motsatizana, ndikofunikira kupanga mawonekedwe amagetsi kuti azitha kusanja ma voltages a cell. Izi sizongogwira ntchito ya batire paketi, komanso kukhathamiritsa moyo wanu. Kufunika kwa chiphunzitso ndikuti kulinganiza kwa batri kumachitika batire isanamangidwe komanso itatha ndipo kuyenera kuchitika nthawi yonse ya moyo wa batri kuti batire igwire bwino ntchito! Kugwiritsiridwa ntchito kwa batire kumatithandiza kupanga mabatire omwe ali ndi mphamvu zambiri zogwiritsira ntchito chifukwa kusanja kumapangitsa kuti batire ikhale yokwera kwambiri (SOC). Mutha kulingalira kulumikiza mayunitsi ambiri a LifePo4 Cell motsatizana ngati mukukoka sled ndi agalu ambiri owongolera. Siloyo imatha kukokedwa bwino kwambiri ngati agalu onse akuthamanga pa liwiro lomwelo. Ndi agalu anayi otere, ngati galu wina wolerera athamanga pang’onopang’ono, ndiye kuti agalu ena atatuwo amayeneranso kuchepetsa liwiro lawo, motero amachepetsa luso lawo, ndipo ngati galu mmodzi wa silere athamanga kwambiri, amatha kukoka katundu wa agalu ena atatuwo. kudzipweteka. Choncho, ma cell angapo a LifePo4 akalumikizidwa motsatizana, ma voliyumu a maselo onse ayenera kukhala ofanana kuti apeze batire ya LifePo4 yothandiza kwambiri. Batire yodziwika bwino ya LifePo4 idavotera pafupifupi 3.2V, koma mkatimachitidwe osungira mphamvu kunyumba, magetsi onyamula, mafakitale, telecom, galimoto yamagetsi ndi ma microgrid applications, timafunikira kwambiri kuposa mphamvu yamagetsi. M'zaka zaposachedwa, mabatire a LifePo4 omwe amatha kuchangidwanso akhala akugwira ntchito yofunika kwambiri pamagetsi amagetsi ndi machitidwe osungira mphamvu chifukwa cha kulemera kwawo, mphamvu zambiri, moyo wautali, mphamvu zambiri, kuthamanga mofulumira, kutsika kwamadzimadzimadzi komanso kusungira zachilengedwe. Kulinganiza kwa ma cell kumatsimikizira kuti magetsi ndi mphamvu ya selo iliyonse ya LifePo4 ali pa mlingo womwewo, mwinamwake, mtundu ndi nthawi ya moyo wa batire ya LiFePo4 idzachepetsedwa kwambiri, ndipo ntchito ya batri idzawonongeka! Chifukwa chake, LifePo4 cell balance ndi imodzi mwazinthu zofunika kwambiri pakuzindikira mtundu wa batri. Panthawi yogwira ntchito, phokoso lamagetsi limakhalapo pang'ono, koma tikhoza kulisunga pamlingo wovomerezeka pogwiritsa ntchito ma cell balancing. Pakulinganiza, ma cell omwe ali ndi mphamvu zambiri amatha kuzungulira / kutulutsa. Popanda kulinganiza kwa ma cell, selo lomwe limagwira ntchito pang'onopang'ono limakhala lofooka. Kulinganiza ma cell ndi imodzi mwazinthu zofunika kwambiri za BMS, komanso kuyang'anira kutentha, kulipira ndi ntchito zina zomwe zimathandiza kukulitsa moyo wapaketi. Zifukwa zina zosinthira batri: LifePo4 batire pcak chosakwanira mphamvu ntchito Kutenga mphamvu yamagetsi yochulukirapo kuposa momwe batire imapangidwira kapena kuchepetsa batire kungayambitse kulephera kwa batire nthawi yake. Battery ya LifePo4 ikatuluka, ma cell ofooka amatuluka mwachangu kuposa ma cell athanzi, ndipo amafika mphamvu yamagetsi yocheperako kuposa ma cell ena. Selo likafika voteji yochepa, paketi yonse ya batri imachotsedwanso pamtolo. Izi zimabweretsa mphamvu yosagwiritsidwa ntchito ya batri pack. Kuwonongeka kwa maselo Selo la LifePo4 likachulukitsidwa ngakhale pang'ono kuposa momwe akuganizira kuti ndi lofunika komanso momwe moyo wa cell umakhalira. Mwachitsanzo, kuwonjezeka pang'ono kwa magetsi opangira magetsi kuchokera ku 3.2V kufika ku 3.25V kudzaphwanya batri mofulumira ndi 30%. Chifukwa chake ngati kusanja kwa ma cell sikuli kolondola komanso kuchulukira pang'ono kumachepetsa nthawi ya moyo wa batri. Kulipiritsa Kosakwanira kwa Paketi Yam'manja Mabatire a LifePo4 amalipidwa pafupipafupi pakati pa mitengo ya 0.5 ndi 1.0. Mphamvu ya batire ya LifePo4 imakwera pomwe kuchangitsa kumafika pachimake ngati kulipiritsidwa kwathunthu pambuyo pake kugwa. Ganizirani za ma cell atatu omwe ali ndi 85 Ah, 86 Ah, ndi 87 Ah motsatana ndi 100 peresenti SoC, ndipo maselo onse amamasulidwa ndipo SoC yawo imachepa. Mutha kudziwa mwachangu kuti cell 1 imatha kukhala yoyamba kutha mphamvu chifukwa imakhala ndi mphamvu zochepa kwambiri. Mphamvu zikayikidwa pamapaketi a cell komanso zomwe zilipo zikuyenda kudzera m'maselo, kachiwiri, cell 1 imakhazikika nthawi yonse yolipiritsa ndipo imatha kuganiziridwa kuti ili ndi charger yokwanira popeza ma cell ena awiriwa ali ndi ndalama zambiri. Izi zikutanthauza kuti maselo a 1 ali ndi kuchepa kwa Coulometric Effectiveness (CE) chifukwa cha kutentha kwa selo komwe kumabweretsa kusagwirizana kwa maselo. Thermal Runaway Chinthu choyipa kwambiri chomwe chingachitike ndi kuthawa kwa kutentha. Monga tikumvetsetsamaselo a lithiamuamakhudzidwa kwambiri ndi kuchulutsa komanso kutulutsa. Mu paketi ya 4 maselo ngati selo limodzi ndi 3.5 V pamene ena osiyanasiyana ndi 3.2 V mlandu ndithu kulipira maselo onse pamodzi chifukwa iwo ali mu mndandanda komanso adzalipira 3.5 V selo lalikulu kuposa analangiza voteji chifukwa zosiyanasiyana mabatire ena akufunikabe kulipiritsa.Izi zimabweretsa kuthawa kwa kutentha pamene mtengo wa kutentha kwa mkati umaposa mlingo umene kutentha kumatha kumasulidwa.Izi zimapangitsa kuti batire ya LifePo4 ikhale yosalamulirika. Kodi ndizinthu ziti zomwe zimayambitsa Cell kusakhazikika mu mapaketi a batri? Tsopano tikumvetsetsa chifukwa chake kusunga ma cell onse mu batire paketi ndikofunikira. Komabe kuti tithane ndi vutoli moyenera tiyenera kudziwa chifukwa chake ma cell amapeza mopanda malire. Monga tanena kale pamene batire paketi imapangidwa poyika ma cell mumndandanda zimawonetsetsa kuti ma cell onse amakhalabe mulingo womwewo. Chifukwa chake paketi yatsopano ya batri nthawi zonse imakhala ndi ma cell okhazikika. Komabe pamene paketiyo ikugwiritsidwa ntchito, maselo amachoka bwino chifukwa chotsatira zinthu. Kusiyanasiyana kwa SOC Kuyeza SOC ya selo ndikovuta; chifukwa chake ndizovuta kwambiri kuyeza SOC yama cell enieni mu batire. Njira yabwino yolumikizira ma cell ikuyenera kufanana ndi ma cell a SOC omwewo m'malo mwa ma voltage omwewo (OCV). Koma popeza sizingatheke kuti maselo amangofanana ndi mawu amagetsi popanga paketi, kusiyanasiyana kwa SOC kungapangitse kusinthidwa kwa OCV pakapita nthawi. Kusiyanasiyana kwa mkati Ndizovuta kwambiri kupeza ma cell a Internal resistance (IR) ndipo monga zaka za batri, IR ya cell imasinthidwanso komanso chifukwa chake mu paketi ya batri si ma cell onse adzakhala ndi IR yofanana. Monga tikumvetsetsa kuti IR imawonjezera kusakhudzidwa kwamkati kwa cell komwe kumatsimikizira kukhamukira komweko kudzera mu selo. Chifukwa IR imasiyanasiyana pakalipano kudzera mu selo komanso mphamvu zake zimakhala zosiyana. Kutentha mlingo Kuthekera kwa kulipira ndi kutulutsa kwa selo kumadaliranso kutentha kozungulira. Mu paketi yayikulu ya batri monga ma EV kapena ma solar arrays, ma cell amagawidwa pamalo otayika ndipo pakhoza kukhala kusiyana kwa kutentha pakati pa paketiyo yomwe imapanga selo imodzi kuti ilipire kapena kutulutsa mwachangu kuposa ma cell otsala omwe amayambitsa kusalingana. Kuchokera pazifukwa zomwe zili pamwambazi, zikuwonekeratu kuti sitingalepheretse maselo kuti asagwirizane ndi ndondomekoyi. Chifukwa chake, njira yokhayo ndiyo kugwiritsa ntchito kachitidwe kakunja komwe kamafuna kuti ma cell ayambenso kuchita bwino akapeza mopanda malire. Dongosololi limatchedwa Battery Balancing System. Momwe mungakwaniritsire Battery Pack Pack ya LiFePo4? Battery Management System (BMS) Nthawi zambiri LiFePo4 batire paketi sangathe kukwaniritsa batire kulinganiza palokha, izo chingapezeke mwakasamalidwe ka batri(BMS). Wopanga batire adzaphatikiza ntchito yofananira ya batri ndi ntchito zina zoteteza monga kuyitanitsa kutetezedwa kwamagetsi, chizindikiro cha SOC, alamu yopitilira kutentha / chitetezo, ndi zina zambiri pa bolodi la BMS. Li-ion battery charger yokhala ndi ntchito yofananira Imadziwikanso kuti "chaja cha batri yokwanira", chojambuliracho chimaphatikiza magwiridwe antchito kuti athandizire mabatire osiyanasiyana okhala ndi zingwe zosiyanasiyana (monga 1 ~ 6S). Ngakhale batire yanu ilibe bolodi ya BMS, mutha kulipiritsa batire yanu ya Li-ion ndi charger ya batire iyi kuti mukwaniritse bwino. Balance Board Mukamagwiritsa ntchito batire yoyendera bwino, muyeneranso kulumikiza chojambulira ndi batri yanu ku bancing board posankha socket inayake kuchokera pa balancing board. Chitetezo Circuit Module (PCM) Bolodi la PCM ndi bolodi lamagetsi lomwe limalumikizidwa ndi paketi ya batri ya LiFePo4 ndipo ntchito yake yayikulu ndikuteteza batire ndi wogwiritsa ntchito kuti asagwire ntchito. Kuonetsetsa ntchito otetezeka, ndi batire LiFePo4 ayenera kugwira ntchito pansi okhwima voteji magawo. Kutengera ndi wopanga batire ndi chemistry, voteji iyi imasiyanasiyana pakati pa 3.2 V pa cell ya mabatire otulutsidwa ndi 3.65 V pa cell ya mabatire omwe amatha kuchajitsidwanso. bolodi la PCM limayang'anira magawo amagetsiwa ndikuchotsa batire pa katundu kapena charger ngati adutsa. Pankhani ya batri imodzi ya LiFePo4 kapena mabatire angapo a LiFePo4 olumikizidwa mofanana, izi zimatheka mosavuta chifukwa PCM board imayang'anira ma voltages. Komabe, mabatire ambiri akalumikizidwa motsatizana, bolodi la PCM liyenera kuyang'anira mphamvu ya batri iliyonse. Mitundu ya Battery Balancing Ma aligorivimu osiyanasiyana osinthira batire apangidwira LiFePo4 batire paketi. Imagawidwa m'njira zoyeserera komanso zogwira ntchito za batri kutengera mphamvu ya batri ndi SOC. Kusamutsa Battery Yosasunthika Njira yolumikizira batire yokhazikika imalekanitsa kuchuluka kwa batire ya LiFePo4 yamphamvu kwambiri kudzera m'zinthu zolimbana ndi batire ndipo imapatsa maselo onse mtengo wofanana ndi batire yotsika kwambiri ya LiFePo4. Njirayi ndi yodalirika kwambiri ndipo imagwiritsa ntchito zigawo zochepa, motero kuchepetsa mtengo wa dongosolo lonse. Komabe, teknoloji imachepetsa mphamvu ya dongosololi monga mphamvu imatayidwa mwa mawonekedwe a kutentha komwe kumapangitsa kuti mphamvu ziwonongeke. Choncho, luso limeneli ndi oyenera ntchito otsika mphamvu. Kugwiritsa ntchito batire Kuwongolera kwacharge yogwira ndi njira yothetsera mavuto okhudzana ndi mabatire a LiFePo4. The yogwira selo kugwirizanitsa njira kutulutsa mlandu kuchokera apamwamba mphamvu LiFePo4 batire ndi kusamutsa kwa m'munsi mphamvu LiFePo4 batire. Poyerekeza ndi ukadaulo wowongolera ma cell, njira iyi imapulumutsa mphamvu mu gawo la batri la LiFePo4, motero imakulitsa magwiridwe antchito, ndipo imafunikira nthawi yocheperako kuti ikhale pakati pa ma cell a batire a LiFePo4, kulola mafunde apamwamba. Ngakhale pamene LiFePo4 batire paketi ndi pa mpumulo, ngakhale mwangwiro chikufanana LiFePo4 mabatire kutaya malipiro pa mitengo yosiyana chifukwa mlingo wa kudziletsa zimasiyanasiyana malinga ndi kutentha gradient: ndi 10 ° C kuwonjezeka batire kutentha kale kuwirikiza kawiri mlingo wa kudziletsa. . Komabe, kulinganiza kwacharge yogwira kumatha kubwezeretsa ma cell kuti agwirizane, ngakhale atapumula. Komabe, njirayi ili ndi zovuta zozungulira, zomwe zimawonjezera mtengo wadongosolo lonse. Chifukwa chake, kusanja kwa ma cell kumakhala koyenera kugwiritsa ntchito mphamvu zambiri. Pali mitundu ingapo yotsatirika yotsatirika yotsatizana ndi magawo osungira mphamvu, monga ma capacitor, ma inductors/transformers, ndi ma converter amagetsi. Cacikulu, yogwira batire kasamalidwe dongosolo amachepetsa mtengo wonse wa LiFePo4 batire paketi chifukwa sikutanthauza oversizing wa maselo kubweza kubalalikana ndi ukalamba wosiyana pakati pa mabatire LiFePo4. Kuwongolera batire mwachangu kumakhala kofunika kwambiri ma cell akale akasinthidwa ndi ma cell atsopano ndipo pamakhala kusintha kwakukulu mkati mwa batire ya LiFePo4. Popeza machitidwe ogwira ntchito a batri amachititsa kuti akhazikitse ma cell okhala ndi kusiyana kwakukulu kwa parameter mu mapaketi a batri a LiFePo4, zokolola zimawonjezeka pamene chitsimikiziro ndi ndalama zosamalira zimachepa. Chifukwa chake, machitidwe owongolera ma batire amapindulitsa magwiridwe antchito, kudalirika ndi chitetezo cha paketi ya batri, pomwe amathandizira kuchepetsa ndalama. Fotokozerani mwachidule Kuti muchepetse kutsika kwa ma cell voltage drift, kusalingana kuyenera kuwongolera moyenera. Cholinga cha njira iliyonse yolumikizirana ndikulola kuti batire ya LiFePo4 igwire ntchito moyenera komanso kuti iwonjezere mphamvu yomwe ilipo. Kulinganiza kwa batri sikofunikira kokha pakuwongolera magwiridwe antchito komansomoyo kuzungulira kwa mabatire, imawonjezeranso chitetezo ku paketi ya LiFePo4battery. Imodzi mwamatekinoloje omwe akubwera popititsa patsogolo chitetezo cha batri ndikukulitsa moyo wa batri. Pamene teknoloji yatsopano yoyendera batire imatsata kuchuluka kwa kusanja komwe kumafunikira pama cell a LiFePo4, imakulitsa moyo wa batire ya LiFePo4 ndikuwonjezera chitetezo chonse cha batri.