Chii chinonzi LiFePO4 Masero?

Masero eLiFePO4 anogona kuchajwazve lithium-ion bhatiri masero anoshandisa lithium iron phosphate se cathode material uye graphic carbon seanode. Masero aya anoshanda pamwero we 3.2V pasero rega rega uye anosiyaniswa kubva kune mamwe ma lithium-ion chemistries nekudzikama kwawo kwepamusoro-soro, hupenyu hwakawedzerwa, uye kuchengetedzwa kwakawedzerwa.

Iyo yakakosha chimiro cheLiFePO4 sero ine zvikamu zvitatu zvekutanga zvinoshanda mukoniti. Iyo cathode inoshandisa lithium iron phosphate (LiFePO4), chinhu chinopa kusarudzika kugadzikana kwemaitiro panguva yekuchaja uye yekuburitsa mitsetse. Anode inosanganisira graphic carbon ine metallic backing, inogonesa kufamba kwakanaka kwelithium-ion. Pakati pema electrode aya panogara lithium salt electrolyte solution inogonesa ion transfer, inoparadzaniswa ne membrane inodzivirira kubata kwakananga uku ichibvumira ion kuyerera.

Chinoita kuti kemisitiri iyi inyanyokosha kusimba kwephosphate-oxygen bond. Iyi P-O bond mu(PO4)3− ion inoratidza kusimba zvakanyanya kudarika mabhondi anowanikwa mumagadzirirwo echinyakare simbi okisijeni. Munguva yekushushikana kwekupisa kana kushungurudzwa kwemuviri, ichi chisungo chakasimba chinodzivirira kuburitswa kweokisijeni kunowanzo kukonzeresa kutiza kwekupisa mune mamwe lithium chemistries. Izvo zvinhu pachazvo zviripo zvakasikwa semineral triphylite, kunyangwe kugadzirwa kwekutengesa kuchitsamira pamaitiro ekugadzira ekuenderana.

Nzira yekuvandudza yeLiFePO4 tekinoroji yakatarisana nedambudziko rakakura pakutanga: kushata kwemagetsi conductivity. Vatsvakurudzi veMIT neHydro-Québec vakakunda chipingamupinyi ichi kuburikidza nemagadzirirwo maviri akakosha. Yekutanga yaisanganisira kudzikisa saizi yechikamu kusvika ku nanoscale dimensions, zvichiwedzera zvakanyanya nzvimbo inowanikwa yelithium-ion interaction. Yechipiri nzira yakavhara zvimedu izvi nezvinhu zvinofambisa senge kabhoni nanotubes, zvichigadzira nzira dzemagetsi mukati mechinhu chose. Mabhindauko aya, akaitwa pakati pa2002 na2015, akashandura LiFePO4 kubva mukuda kuziva murabhoritari kuita tekinoroji inokwanisa kutengeserana.

LiFePO4 masero anoburitsa chaiwo tekinoroji paramita inotsanangura envelopu yavo inoshanda. The nominal voltage of 3.2V per cell inobvumira maseru mana akabatana munhevedzano kuti abudise 12.8V, achinyatsoenderana ne12V lead{{5}asidhi yakajairwa. Kuchaja voltage kunowanzosvika 3.65V, ukuwo discharge cutoff inogara pa2.5V kudzivirira kusagadziriswa kwezvinhu. Kushanda pazasi pechikumbaridzo ichi kunokonzera deintercalation yeLiFePO4 muFePO4, ichikuvadza zvachose chimiro chesero.

Kuwanda kwemagetsi kunomiririra kutaurwa kwakakosha uko LiFePO4 inotengeserana-nezvimwe zvikomborero. Masero aripo anowana 90-160 Wh/kg, paine chiziviso cheCATL cha2024 chemasero 205 Wh/kg zvichiratidza kufambira mberi. Izvi zvinofananidzwa ne250-300 Wh/kg yemabhatiri eNMC uye 260 Wh/kg yemasero eNCA anoshandiswa mukushanda kwepamusoro-soro. Iyo volumetric simba density inosvika pa220 Wh/L. Nepo nhamba idzi dzichitevera mamwe machemistri e lithium, gaka racho rakadzikira zvakanyanya kubva pakushomeka kwe14% kwakaonekwa muna 2008.

Hupenyu hwemabhasikoro hunomira sechimwe chinhu chinoshamisira. Mumamiriro ezvinhu akanaka, LiFePO4 masero anotsigira 3,000 kusvika 10,000 full charge-madhizaini ekuburitsa simba risati radonha kusvika pa80% yepakutanga. Vamwe vagadziri vava kuda macycle 15,000 kune inotevera{11}}chizvarwa chepamusoro-yakasiyana-siyana. Izvi zvinodarika mazana mashanu-1,000 mabhatiri eNMC uye 300-500 mabhatiri ekare elead-asidhi. Zvishandiso zvepasi rese zvinotsigira nhamba dzemurabhoritari idzi, dzine maseru anochengetedzwa zvakanaka achiunza 10+ makore ebasa.

Kushivirira kwetembiricha kunowedzera kushanduka kwekushanda. Masero eLiFePO4 anoshanda mukati mekubuda kwe - 20 dhigirii kusvika 60 dhigirii (-4 dhigirii F kusvika 140 dhigirii F), nekuchaja kunokurudzirwa pakati pe0 dhigirii ne45 dhigirii (32 dhigirii F kusvika 113 dhigirii F). Yepamberi yakaderera-tembiricha akasiyana kubva kune vanogadzira vakaita seGrepow inochengetedza 85% kugona pa -20 dhigirii uye 55% kugona pa -40 dhigirii, ichigonesa kuiswa munzvimbo dzinotonhora zvakanyanya kusanganisira zvechiuto uye zveArctic research application.

Thermal stability inosiyanisa LiFePO4 kubva kune mamwe lithium-ion chemistries nenzira dzinoyerwa. Izvo zvinyorwa zvinochengetedza kutendeseka kwechimiro patembiricha iri pakati pe350 dhigirii uye 500 dhigirii, kunze kwekuparara kweLiCoO2 uye manganese spinel cathodes. Kana yaiswa pamiyedzo yekupinza zvipikiri, kuwandisa, kana mapfupi maseketi, LiFePO4 masero anoramba kupisa uko mamwe machemistries anogona kusangana nekupisa kwekupisa.

Iyi chengetedzo mbiri inobva kune chemistry yemukati maitiro. Munguva yekubhadhara, hapana lithium metal plating inoitika pane anode kunyangwe pasi pemamiriro ekushungurudza. Iyo inochajiswa zvizere ine yasara shoma lithium muchimiro checathode-hapana chinoramba chiri musero reLFP rine chaji, zvichienzaniswa ne50% musero reLiCoO2. Uku kusavapo kweiyo reactive lithium kunobvisa yekutanga kupisa sosi. Pamusoro pezvo, P{7}}O mabhondi akasimba anodzivirira kuburitswa kweokisijeni panguva yezviitiko zvinopisa, achibvisa oxidizer inodiwa pakupisa.

Kugadzikana kwechinyorwa panguva yekufamba kwe lithium kunowedzera imwe nhanho yekuchengetedza. Sezvo lithium ions ichipinda nekubuda panguva yebhasikoro, LiFePO4 inopinda mashoma volumetric shanduko. Iyo lithiated uye delithiated crystal zvimiro zvinoramba zvakafanana, zvichidzivirira kushushikana kwemagetsi kunogona kukuvadza masero mune mamwe makemikari. Maseru eLiCoO2 anosangana ne-kuwedzeredzwa kwemutsara panguva yedelithiation, zvichigadzira kushaya simba kwemuchina kunoungana pamatenderedzwa.

LiFePO4 masero anouya mumhando nhatu dzekutanga dzemuviri, imwe neimwe yakagadziridzwa kune akasiyana maapplication. Macylindrical cells-akagadzirwa muhukuru hwakaita se18650, 21700, 26650, ne32650-anomiririra chimiro chekare uye chevakuru. Iyo cylindrical chimiro inogovera kudzvanywa kwemukati zvakaenzana pamusoro pepamusoro, kunatsiridza kupisa kwekupisa uye simba remagetsi. Kugadzira otomatiki kwasvika pamwero wepamusoro, izvo zvaita kuti maseru aya adhure{13}}kunyatsoshanda pamaapplication anoda huwandu hukuru hwemayunitsi madiki. Kusarudzwa kwaTesla kwe21700 cylindrical masero eModel 3 motokari inosimbisa iyi fomati yekushandiswa kwemotokari yepamusoro.

Maseru ePrismatic anorongedza stack ye electrode mune yakasimba rectangular imba, kazhinji aruminiyamu kana simbi. Iyi fomu chinhu inowedzera kushandiswa kwenzvimbo mumabhatiri mapakeji, serectangular maumbirwo tessellate pasina gap. Maseru ePrismatic anowanzo kubva pa30Ah kusvika pa300Ah huwandu payuniti, achidzikisa huwandu hwesero maseru uye kuoma kweBMS mukumisikidzwa kwakakura. Iyo yakaoma kesi inopa yakanakisa dziviriro uye kupisa kupisa. Vagadziri vakuru vanosanganisira CATL, EVE, neGOTION vanogadzira prismatic LiFePO4 maseru emotokari dzemagetsi uye magidhi ekuchengetedza maapplication, uko fomati yacho ndiyo inonyanya kukosha-kuisirwa zvikero.

Masero ehomwe anovharira stack ye electrode mualuminium inochinjika-plastic laminate. Iyi dhizaini inobvisa iyo yakaomeswa simbi imba, ichidzikisa huremu neanosvika makumi matatu muzana kana ichienzaniswa nemasero eprismatic akaenzana. Iyo inochinjika fomati inobvumira maumbirwo akajairwa akaiswa munzvimbo dzisina kujairika, kunyanya kukosha mumagetsi evatengi uye midziyo inotakurika. Zvisinei, kunze kwekunze kwakapfava kunopa zvishoma kudzivirira kwemagetsi uye kunoita kuti masero awedzere kuputika panguva yekukwegura. Masero emuhomwe anoda tsigiro yekunze mumabhatiri pack maassemblies.

Musika webhatiri weLiFePO4 wakaona kukura kunoshamisa, nemusika wepasi rose waikosha madhora bhiriyoni gumi nenomwe muna 2024 uye unofungidzirwa kusvika pamadhora mazana manomwe nemakumi masere nemazana masere nemakumi masere neshanu pamadhora 72.8-84.2 bhiriyoni panosvika 2034-2035, inomiririra kuwedzera kwepagore kukura kwe15.7-17.3%. Kuwedzera uku kunoratidza kuwedzera kugamuchirwa mumotokari dzemagetsi, masisitimu ekuchengetedza simba, uye akasiyana maindasitiri ekushandisa.

Vagadziri vekuChina parizvino vanobata pedyo-nokutonga kwesimba rekugadzira LFP. Pakazosvika 2021, makambani ekuChina-akagadzira 90% yehupfu hwepasi rose hweLFP. Makambani akaita seShenzhen Dynanonic akawedzera huwandu hweLFP hwepagore kubva pamatani mazana mashanu kusvika pamatani mazana maviri nemakumi matanhatu neshanu mukati memakore gumi. CATL, BYD, GOTION, uye vamwe vagadziri vebhatiri vekuChina vakagadzira nzvimbo dzemusika, neTesla neBYD chete inoverengera makumi matanhatu nesere muzana emabhatiri eLFP akaiswa muEVs kubva munaGunyana 2022.

Mitengo yemaserura yadzikira zvakanyanya, zvichivandudza kukwikwidzana kwehupfumi. Mitengo yemasero eLFP yakadzikira yakadzikira kubva pa$137/kWh paavhareji muna 2020 kuenda paavhareji yemadhora zana muna 2023. Pakazosvika 2024, masero eVDA-akakura eLFP akasvika pasi pemadhora makumi manomwe/kWh kuChina, vamwe vanogadzira motokari vachiti mitengo yekutenga yakadzikira se$56/kWh. Pakati-2024 mapaketi ebhatiri akaunganidzwa anotengeswa kuvatengi vekuUS mari inoita $115/kWh. Kufungidzira kweindasitiri kunoratidza kuti inogona kuwedzera kudzikira kusvika kumadhora makumi mana nemana/kWh sezviyero zvekugadzira uye zvirambidzo zvepatent-izvo zvakatanga kupera muna 2022-yakavhurika kugadzirwa kune vakawanda vagadziri.

Iyo mutengo chimiro inofarira LFP mumutengo wakakwana wehuwandu hwekuverenga. Dhipatimendi re2020 rekuongorora magetsi rakaona kuti pa-kWh mitengo yeLFP-masisitimu ekuchengetera magetsi akaderera ne6% pane masisitimu eNMC, ukuwo achiratidzira 67% yehupenyu hurefu hwekushanda nekuda kwekusimba kwakanyanya. Uku kusanganiswa kwemitengo yakaderera yekumberi uye yakawedzera hupenyu hwesevhisi inowedzera matipi ekutenga sarudzo yakanangana neLFP chemistry kune yakamira application.

Kutorwa kwemotokari yemagetsi kunotyaira chikamu chikuru cheLiFePO4 cell kudiwa. Tesla akachinja ese akajairwa-emhando yeModel 3 neModel Y mota dzakagadzirwa mushure meGumiguru 2021 kuenda kumabhatiri eLFP, ichitaura nezvemitengo yakanakira uye zvekutengesa cheni. BYD inovaka yayo yese EV mutsara paLFP chemistry. Iyo yakaderera simba density kana ichienzaniswa nemabhatiri eNMC inoda kuti mabhatiri akakura zvishoma kune yakaenzana, asi chirango chehuremu chinoratidza chinogamuchirika mumotokari umo kuchengetedzeka, mutengo, uye hupenyu hurefu zvinotungamira pamusoro pemagineti maitiro ekuwana. Ongororo yemusika inoratidza kuti LFP yakapfuura zviri pamutemo mabhatiri eternary muna 2021 iine makumi mashanu neshanu muzana eiyo yakaiswa EV huwandu, paine fungidziro dzinoratidza kuti chikamu cheLFP chichapfuura 60% ne2025.

Magetsi ekuchengetedza masisitimu anomiririra yechipiri yakakura application domain. Kuiswa kwekugara kubva kumakambani akaita seEnphase, SonnenBatterie, uye Tesla (Powerwall 3, yakaburitswa 2023) shandisa LFP chemistry yesimba rekuchengetedza imba uye kubatanidzwa kwezuva. Maseru 'akanyanya kushivirira pakuchajisa anogonesa kubatana kwakananga kumapanera ezuva pasina akaomesesa ma charger controller, kurerutsa masisitimu ekuvaka. Zvishandiso-zvikero zvigadziriso zvinobatsira kubva kuLFP yenguva refu yehupenyu-yakakosha kune grid kudzikamisa maapplication anogona kutenderera kakawanda zuva nezuva. Tesla yakashandura kushandiswa kwayo-kuyera Megapack mabhatiri kuita LFP chemistry muna 2021.

Zvifambiso zvemotokari dzemugungwa nedzekutandara dzinoita maringe neruremu rweLFP nekugadzirisa{{0}kushanda pasina. A36 volt lithium ion bhatirikugadziridzwa, kazhinji kuvakwa kubva kumaseru gumi nemaviri eLiFePO4 munhevedzano (12 × 3.2V=38.4V nominal), yave chiyero chemagetsi eku trolling mota nengoro dzegorofu. Masisitimu aya anorema chimwechete-chetatu chemabhatiri eeacid akaenzana{{6}easidhi apo achipa 4,{8}} hupenyu hwekutenderera uye 100% kudzika{{10}kwe{11}}kukwanisa kuburitsa. Iyo 36V kumisikidzwa inopa simba rakakwana rekufambisa mugungwa uye ngoro dzegorofu uchichengetedza kuenderana kwemagetsi nearipo emagetsi ekudzora.

Midziyo yeindasitiri inosanganisira forklifts, AGVs (otomatiki inotungamirwa mota), uye michina yekuchenesa yekutengesa inowedzera kutsanangura mabhatiri eLFP. Iko kukurumidza-kuchaja (chaji yakazara mumaawa 1.5 pachiyero che1C) inoderedza nguva yekushandisa. Kuyerera kwakanyanya-kuenderera mberi 1C kusvika 3C zvichienderana negiredhi yesero, nekurova kwemhepo kunosvika 10C-inopa magetsi anodiwa kuti akurumidze nekukwira. Kusakwana kwebhatiri kune imwe nzvimbo-ye{12}}kuchaja kunobvisa "memory effect" iyo yakasvibisa mabhatiri ekare.

LiFePO4 cells

LiFePO4 maseru anotengeswa mumhando yemagiredhi anokanganisa zvakanyanya kuita uye hupenyu hurefu. Masero eGiredhi A anomiririra kugadzirwa kwepamusoro-tier nehukuru hunoenderana nekutsanangurwa mukati me2%, mukati mekudzivirira pasi pe0.3 mΩ, uye hupenyu hwekutenderera hunodarika 3,000-6,000 cycle pa100% kudzika kwekubuda. Aya maseru anoyedzwa kwakasimba kunosanganisira kuoneswa kwesimba, kuyerwa kwemukati mekudzivirira, uye voltage inowirirana cheki. Kufanana kweBatch kunobvumira kuenzanisa kwepakeji uye zvakanyanya kufanofungidzira kuita kudzikisira.

Masero eGiredhi B anoratidza kutsauka kudiki kubva padanho repamusoro. Kugona kunogona kudonha ne3-5% pasi pechiyero, kuramba kwemukati kunokwira zvishoma, uye tarisiro yehupenyu inodonha kusvika ku2,000-3,000 cycles. Aya maseru anoratidza akakwana kune mashoma anodiwa maapplication uko kuita kwakazara uye hupenyu hurefu husina kukosha. Mari inochengetwa ye20-30% kana ichienzaniswa neGiredhi A inoita kuti vataridzike kune mapurojekiti ane hanya nebhajeti.

Masero eGiredhi C anomiririra zvigadzirwa zvatadza kusvika-zviyero zvepamusoro. Musiyano wehunyanzvi unogona kudarika 5%, kuramba kwemukati kunogona kukwidziridzwa zvakanyanya, uye kutenderera kwehupenyu kufanotaura kunodonha pasi pe2,000 cycles. Kusapindirana kwebatch kunokonzeresa zvipingamupinyi mumapaketi akawanda{{6}sero. Ichiri kushanda, maseru aya anokwana chete maapplication ane mashoma ekuita zvinodiwa uye uko kutsiva kwekutanga kunogamuchirwa.

Paunenge uchitsvaga maseru, vatengesi vane mbiri vanopa fekitori bvunzo mishumo inonyora kugona, yemukati kuramba, voltage, uye kutenderera kwekuyedza mhinduro. Zvitupa kubva kuISO, CE, UL, uye UN38.3 zvinoratidza kutevedzera kuchengetedzwa kwenyika nekuita zviyero. Iwo akachipa maseru anowanzo shaya zvinyorwa uye chitupa, akatakura njodzi yakakura yekutadza nguva isati yakwana kana nyaya dzekuchengetedza.

LiFePO4 maseru anoda chaiwo ekuchaja maprotocol kuti awedzere hupenyu hurefu uchichengetedza kuchengeteka. Nzira yemazuva ese -constant voltage (CC-CV) inotanga nekuchaja pa 0.5C (hafu yesero amp-chiyero cheawa) kusvika yasvika 3.65V pasero. Iyo charger inozochengeta iyi voltage apo iripo zvishoma nezvishoma ichikwira kusvika pa 0.05C, ichiratidza kuzara. Yese yekuchaja nguva inomhanya ingangoita maawa matatu pa 0.5C rate. Maprotocol ekuchaja nekukurumidza anogona kupedza basa mumaawa 1.5 uchishandisa 1C current, kunyange izvi zvichiwedzera zvishoma-kudzikira kwenguva refu.

Kutarisisa tembiricha panguva yekuchaja kunoratidza kukosha. Masero mazhinji anotsanangura 0-45 dhigirii yekuchaja renji, nekuchaja pazasi 0 dhigirii ichikonzera kukuvara kwe lithium plating. Yepamberi bhatiri manejimendi masisitimu anosanganisira tembiricha sensors inomisa kuchaja kunze kwenzvimbo dzakachengeteka kana, mukudziya kwebhatiri masisitimu, anodziya maseru asati abvumira kuchaja ikozvino. Discharge tembiricha yakawedzera yakawedzera, kazhinji -20 dhigirii kusvika 60 dhigirii, kunyangwe huwandu huchidzikira kwekanguva pakupisa kwakanyanya.

Battery Management Systems (BMS) inoshanda akakosha ekudzivirira mabasa muLiFePO4 application. BMS inoongorora magetsi esero rega rega, ichidzivirira kuwandisa kwe3.65V uye pamusoro-kubuda pasi pe2.5V-zvese zvinokuvadza maseru zvachose. Kudzikamisa kwazvino kunodzivirira kudarika sero yakayerwa kuburitsa simba, ukuwo tembiricha cutoffs inodzivirira kubva kuzviitiko zvinopisa. Mumaseru-akawanda, BMS inoita kuenzanisa masero, kuona kuti maseru ese anosvika pakuchaja kwakafanana zvisinei nekusiyana kwehuwandu hudiki.

State of charge indication inopa akasiyana matambudziko neLFP chemistry. Kusiyana nedzimwe mhando dzelithium-ioni dzinoratidza kudonha kwevoltage zvakaenzana nekubuda, LiFePO4 inochengetedza zvinonwisa mvura muchikamu che20-90% cheSOC. Voltage{{7}yakavakirwa paSOC estimation inoratidza kusavimbika mudunhu rino. Mashandisirwo epamusoro eBMS anoshandisa coulomb counting-tracking amp-maawa mukati nekubuda-akabatanidzwa neperiodic calibration cycles kuchengetedza kuverenga kweSOC chaiko.

LiFePO4 cells

Lithium nickel manganese cobalt oxide (NMC) mabhatiri anopa yakakwira simba density, kazhinji 150-200 Wh/kg, ichigonesa mabhatiri akareruka kuti aenzane. Iyi mukana inonyanya kukosha mune aerospace uye mashandiro emagetsi mota uko kilogiramu yega yega inokanganisa huwandu uye kukurumidza. Nekudaro, mabhatiri eNMC anodhura zvakanyanya, anotenderera nguva shoma (1,000-2,000 madhijitari akajairwa), uye anotakura yakakwira yekupisa yekupisa njodzi. Iyo chemistry inoda nickel uye cobalt, zvese zviri pasi pezvirambidzo zvekupa uye ehutsika yekutsvaga zvinonetsa.

Lithium nickel cobalt aluminium oxide (NCA) mabhatiri anosundira simba density yakakwira zvakadaro, inosvika 250-300 Wh/kg mumaseru ekutanga. Tesla kare akashandisa masero ePanasonic NCA kumitsetse yayo yemotokari. Iyo chemistry inopa yakanakisa simba density yekukurumidza kukurumidza asi inogovera zvipimo zveNMC maererano nehupenyu hwekutenderera uye kugadzikana kwekupisa. Mari yekugadzira inodarika LFP zvakanyanya.

Lead{{0}mabhatiri easidhi anoramba akazara mumaapplication achiisa pamberi mutengo wekutanga kupfuura zvese. Ne$100-150/kWh pabhatiri rakazara, lead{{6}asidhi inokunda mitengo yepamberi yeLFP. Nekudaro, kuenzanisa kunowira pasi pamutengo wakazara wemuridzi. Lead{{10}asidhi inongopa mazana matatu-500 macycles pa50% kudzika kwekubuda, inoda kugadziriswa nguva dzose, uye inoyera 3-4 zvakapetwa kupfuura zvakaenzana-inokwana LFP. Makore mashanu ekutsiviwa kwelead-acid maringe ne10+ makore eLFP anodzoreredza mukana wemutengo mune chero makore akawanda ekuongorora.

Solid-mabhatiri ehurumende anomiririra imwe nzira ichiri kubuda makore kubva mukugadzirwa kwekutengesa pamwero. Aya mabhatiri anovimbisa yakakwira simba density uye yakagadziridzwa chengetedzo nekutsiva mvura electrolyte ine yakasimba ceramic kana polymer zvinhu. Zvakadaro, matambudziko ekugadzira zvinhu, kudhura kwakanyanya, uye kusavimbika kwenguva refu-kunoramba kwakasimba{4}}tekinoroji muchikamu chebudiriro kubva muna 2024.

Yakakodzera LiFePO4 sisitimu dhizaini inoda kutarisisa kune voltage kumisikidzwa uye simba rekuda. Series yekubatanidza inowanza voltage (maseru mana 3.2V anoburitsa 12.8V), nepo parallel kubatanidza kuwedzera huwandu (maviri 100Ah maseru akafanana anopa 200Ah). Nekudaro, kusanganisa maseru kubva kune vakasiyana vagadziri, misi yekutenga, kana kunyange mabheti ekugadzira kunogadzira kusaenzana kunowedzera kuderera. Maitiro epamusoro anotsanangura maseru akafanana akatengwa panguva imwe chete kune chero bhatiri pack.

Kuiswa kwemuviri kunofanirwa kugarisa kutungamira kwekupisa uye kubvumira kuwedzera kudiki panguva yekushanda. Nepo LiFePO4 inosangana nekuzvimba kushoma kana ichienzaniswa nemamwe machemistries, maseru achiri kuwedzera zvishoma nekuchinja kwekushisa uye kuchembera. Rigid clamping inodzivirira kuwedzera uku kunogadzira kushushikana kwemakanika kunotungamira kukundikana nguva isati yakwana. Mounting masisitimu anofanirwa kupa yakachengeteka kubata uku ichibvumira madiki dimensional shanduko.

Thermal manejimendi inotambanukira kubva pakuita kutonhora kunoshanda zvinoenderana nezvinodiwa zvekushandisa. Kuisa stationary kunowanzo kutsamira pane zvakasikwa convection uye ambient tembiricha kutonga. -Mashandisirwo azvino akaita semotokari dzemagetsi anoda kutonhodzwa, kazhinji mweya kana masisitimu emvura anochengetedza maseru mukati me 20-30 madhigirii anokwana ekushanda. Sezvineiwo, kutonhora-kwemamiriro ekunze kungangoda zvinhu zvekudziya kuti zviunze maseru munzvimbo yakachengeteka yekuchaja tembiricha usati wabvuma kuchaja ikozvino.

Lead iripo-asidhi yekuchaja zvivakwa zvinoda kugadziriswa kuti ienderane neLiFePO4. Traditional lead-asidhi charger dzakagadzirirwa 14.4V final voltage ichangochaja bhanga re12V LFP, ichimira 50-60% yestate of charge. Chinangwa-yakavakirwa LiFePO4 majaja anonangwa 14.4-14.6V (4 maseru × 3.6V) kuti inyatsochaja. Kushaikwa kweinoyangarara kuchaja inorerutsa masisitimu eLFP-kana yangochajwa, mabhatiri anogona kugara nekusingaperi asina trickle ikozvino, sezvo mareti ekuzviburitsa ari pasi pe3% pamwedzi.

LiFePO4 chemistry inodzivirira iyo yetsika uye yezvakatipoteredza nyaya dzine chekuita necobalt uye nickel migodhi. Kutorwa kweCobalt muDemocratic Republic of Congo kunosanganisira-kutyorwa kwekodzero dzevanhu uye kushandiswa kwevana. Nickel migodhi inokonzeresa kukanganisa kwezvakatipoteredza kuburikidza nekusvibiswa kwemasairi uye kuparadzwa kwenzvimbo. Mabhatiri eLFP anobvisa izvi zvinonetsa zvachose, achishandisa yakawanda uye yakagovaniswa simbi uye phosphate feedstocks.

Iyo yekugadzira kabhoni tsoka yeLiFePO4 maseru inomhanya yakaderera pane NMC uye NCA dzimwe nzira. Kureruka kugadzirisa kwezvinhu zvakabikwa uye kuderera kwesimba zvinodikanwa panguva yekugadzirwa kunoderedza yakamisikidzwa kabhoni. Ongororo yehupenyu inoenzanisa makemikari ebhatiri yakawana mabhatiri eLFP anogadzira angangoita 15% yakaderera CO2 yakaenzana panguva yekugadzira pane mabhatiri eNMC akaenzana.

Magumo{{0}e-ekudzokorodza upenyu kunopa mikana nematambudziko. Kushaikwa kwecobalt uye nickel kunoderedza kurudziro yehupfumi yekudzokorodza, sezvo zvinhu zvakadzoreswa zvine mutengo wakaderera wemusika. Nekudaro, lithium nesimbi zvese zvakakodzera kudzoreredza nekuda kwezvikonzero zvezvakatipoteredza. Maitirwo ari kusimukira ekudzokorodza anogona kudzoreredza 95%+ yezvishandiso kubva kuLiFePO4 maseru kuburikidza nehydrometallurgiska kana yakananga nzira dzekudzokorora. Chechipiri-maapplication ehupenyu anopa imwe nzira, maseru akaregwa kubva kuEVs pa70-80% kugona kuwana kushandiswa kutsva munzvimbo yakamira apo kuwanda kwesimba kusinganyanyi kukosha.

Hupenyu hwakawedzerwa hwekushanda hwemabhatiri eLFP hunogara hunovandudza metrics ekusimudzira. Bhatiri rinogara makore gumi pa 6,000 ma cycles maringe ne 3 years pa 1,000 cycles zvinoreva mashoma magadzirirwo ekugadzirwa, kuderedza kushandiswa kwezvinhu, uye kushomeka kwemarara kugadzirwa pakilowatt-awa yekuwedzera simba. Iyi mukana wekugara kwenguva refu inogona kumiririra LiFePO4 inonyanya kukosha yezvakatipoteredza mupiro.

LiFePO4 cells

CATL's 2024 chiziviso che 205 Wh/kg LiFePO4 maseru inoratidza yakakosha simba density chiitiko, kuvhara gap neanokwikwidza chemistries pasina kupira kutenderera hupenyu kana kuchengeteka. Iyo kambani yakawana izvi kuburikidza ne electrode optimization uye yakanatswa particle engineering, kuchengetedza mutengo wekugadzira pamatanho aripo. Kana akasimbiswa mukugadzirwa kwekutengesa, maseru aya anoita kuti LFP ishande kune maapplication aimboda yakakwira density dzimwe nzira.

Zvigadziriso zvekukurumidza{{0}kuchaja zvinogadzirisa chimwe chezvipimo zvasara zveLFP. CATL's Shenxing bhatiri, yakavhurwa muna 2023 nekugadzirwa kwakawanda kwakarongwa kupera kwa2024, inopa mazana mana emakiromita (248 mamaira) kubva pakuchaja kwemaminetsi gumi. Kuita izvi kunoda kufambira mberi mukugadzirwa kwe electrode, kuumbwa kwe electrolyte, uye kutonga kwekupisa. Kumhanya kwakadai kwekuchaja kunosvika nguva yekuwedzera mafuta emotokari dzakajairwa, ichibvisa chipingamupinyi chakakosha kukutora EV.

Yakaderera-kunatsiridza kwekuita kwe tembiricha inowedzera hamvuropu yeLFP. Maumbirwo akasarudzika kubva kuvagadziri vakaita seGrepow anochengetedza 85% kugona pa-20 madhigirii uye anoramba achishanda pa-45 dhigirii . Aya maseru anotonhora-akagadziridzwa anogonesa LiFePO4 kutumirwa mumamiriro ekunze asina kufanira, kuvhura misika munzvimbo dzekuchamhembe uye yakakwirira-yakakwirira maapplication. Iyo tekinoroji inonyanya kubatsira midziyo yemauto, aerospace masisitimu, uye tsvakiridzo yesainzi munzvimbo dzepolar.

Sero-ku-kurongedza nesero-ku{3}}zvitsva zvechasi kubvisa chiyero chemodule yechinyakare, kubatanidza maseru muzvikamu zvemaumbirwo. BYD's Blade Battery dhizaini inoronga prismatic maseru sezvinhu zvimiro, inovandudza volumetric kunyatsoita ne50% uku ichirerutsa kusangana. Tesla's structural bhatiri paki mumotokari dze4680-cell inowana kubatanidzwa kwakafanana. Uku kufambira mberi kwekuvaka kunodzosera chikamu cheLFP simba density dhizaini kuburikidza nekushandiswa kurinani kwenzvimbo.

Masero eLiFePO4 anowanzo endesa 3,000-6,000 akazara macycles asati asvika 80% ekuchengetedza simba, zvichiturikira kusvika kumakore 10+ mumapurogiramu mazhinji. Urefu hwehupenyu chaihwo hunoenderana zvakanyanya nemashandisirwo-kuchovha bhasikoro (20-80% SOC renji) kunogona kurebesa hupenyu kusvika kugumi,{10}} macycles, ukuwo zvinoyerera zvakadzika kusvika kucutoff voltage ichimhanyisa kukwegura. Kutonga kwetembiricha kunokanganisa hupenyu hurefu, nemaseru anoshanda mu20-30℃ambient anogara zvakanyanya kupfuura ayo akafumurwa kune tembiricha yakanyanyisa. Kudzivirirwa kwakakodzera kweBMS kubva kune-over-voltage, under-voltage, uye yakawandisa ikozvino inoratidza yakakosha pakuwana yakayerwa kutenderera hupenyu.

Kusanganisa maseru kubva kune vakasiyana vagadziri, mabhechi ekugadzira, kana mazuva ekutenga kunogadzira kuvimbika uye njodzi dzekuchengetedza. Masero ane misiyano isina kujeka mukugona, kuramba kwemukati, uye maitiro emagetsi kunyangwe akayerwa zvakafanana. Misiyano iyi inokonzeresa kuchaja uko mamwe maseru anosvika pakuchaji kusati kwaita mamwe, zvichiita kuti awedzere-voltage pane mamwe maseru uye aripasi-kuchaja pane mamwe. Nekufamba kwenguva, kusaenzana uku kunowedzera kuderedzwa kwemasero asina kusimba, izvo zvinogona kukonzera kutadza kwehurongwa. Kuita kwakanakisa kunoda kushandisa maseru akafananidzwa akatengwa panguva imwe chete kune chero bhatiri paki, kuve nechokwadi chekuita kwakafanana uye hupenyu hwepamusoro.

Battery Management Systems inodzivirira LiFePO4 masero kubva mumamiriro ezvinhu anokonzera kukanganisa zvachose kana njodzi dzekuchengetedza. Iyo BMS inodzivirira kuchaja pamusoro pe3.65V pasero, izvo zvinokonzeresa lithium plating uye kukurumidza kuchembera. Iyo inovhara kubuda pazasi 2.5V, kudzivirira kusinga gadzirise kuparara kwezvinhu. Kudzikamisa kwazvino kunochengeta mareti ekubuda mukati mesero yakatarwa, kudzivirira kushushikana kwekushisa. Mune-masero pack, BMS inoita kuenzana kuenzana nemagetsi emagetsi zvisinei nemusiyano mudiki. Kutarisisa tembiricha kunodzivirira kuchaja pazasi 0 dhigirii uye kuvhara sisitimu kana maseru akapisa. Pasina BMS dziviriro, LiFePO4 mabhatiri anotambura akaderedzwa lifespan uye anogona kutadza modes.

LiFePO4 inokunda muzvikumbiro zvinotungamira kuchengetedzeka, hupenyu hurefu, uye mutengo wakakwana wevaridzi pamusoro pehuwandu hwesimba. Masisitimu ekuchengetedza magetsi, zvese zvekugara uye zvekushandisa-chikero, zvinobatsira kubva kuhupenyu hweLFP hwakareba uye kugadzikana kwemafuta. Marine application inokoshesa chimiro chekuchengetedza uye kushivirira kune dzakaoma nharaunda. Ngoro dzegorofu, forklifts, uye zvishandiso zvemaindasitiri zvinotora mari pakuchaja nekukurumidza uye kuburitsa kwakadzika kugona. Mota dzemagetsi muchikamu chehupfumi dzinowedzera kutora LFP kune mutengo wakanaka, kubvuma zvine huremu zvirango. MaEV anoshanda epamusoro{{7}, maapplications emuchadenga, uye magetsi anotakurika apo uremu hune huremu huchiri kudiwa nepamusoro-simba-density NMC kana NCA chemistries zvisinei nehupenyu hwadzo hupfupi uye mutengo wakakwira.

Kunzwisisa LiFePO4 maseru kunosanganisira kuziva kukosha kwekemistry kutengeserana-kubvisa-kusiya huwandu hwesimba repamusoro kuitira kuchengeteka kwepamusoro, kurarama kwenguva refu, uye hupfumi hunoyevedza. Iyo tekinoroji inoenderera mberi ichifambira mberi kuburikidza nekutsvagisa mune electrode optimization, electrolyte maumbirwo, uye nzira dzekugadzira. Kuchinja kwemusika kuri kuramba kuchifarira LFP sezvo kupera kwepatent kunogonesa kugadzirwa kwakakura, zvikero zvekugadzira kuti zvienderane nezvinodiwa neEV, uye -mutengo-we{7}}wezviverengero zvevaridzi zvinoratidza kukosha-kwenguva refu. Zvekushandisa uko bhatiri rinoshanda kwemakore gumi pane kutsiviwa makore mashoma ega ega, LiFePO4 maseru anoburitsa mabhenefiti anotsanangura kukurumidza kwavo kugovaniswa kwemusika muzvikamu zvekuchengetedza simba, zvekufambisa, uye maindasitiri.