Txij li thaum pib ntawm lub xyoo pua 21st, nrog kev nce ntawm cov neeg siv khoom siv hluav taws xob xws li smartphones, ntsiav tshuaj, cov khoom siv siv tau thiab drones, qhov kev thov raulithium roj teebtau pom qhov tawg tsis tau pom dua. Kev thov thoob ntiaj teb rau cov roj teeb lithium tau loj hlob ntawm tus nqi ntawm 40% mus rau 50% txhua xyoo, thiab lub ntiaj teb tau tsim txog 1.2 billion lub zog tshiab lub tsheb chargers thiab ntau dua 1 lab lub zog roj teeb rau lub tsheb hluav taws xob, 80% ntawm cov uas tuaj ntawm Suav lag luam. Raws li Gartner cov ntaub ntawv: Los ntawm 2025, lub ntiaj teb no lithium roj teeb muaj peev xwm yuav ncav cuag 5.7 billion Ah, nrog rau kev loj hlob txhua xyoo ntawm 21.5%. Nrog rau kev nce qib ntawm kev siv thev naus laus zis thiab kev tswj hwm tus nqi, Li-ion roj teeb tau dhau los ua tus nqi sib tw rau cov khoom siv lead-acid roj teeb nyob rau hauv lub zog tshiab lub tsheb fais fab roj teeb.
1.Technology Trends
Lithium roj teeb thev naus laus zis txuas ntxiv txhim kho, los ntawm yav dhau los ternary cov ntaub ntawv mus rau lub zog siab dua lithium hlau phosphate cov ntaub ntawv, tam sim no hloov mus rau lithium hlau phosphate thiab cov ntaub ntawv ternary, thiab cov txheej txheem cylindrical yog qhov tseem ceeb. Hauv kev lag luam ntawm cov neeg siv khoom siv hluav taws xob, cylindrical lithium hlau phosphate roj teeb tau maj mam hloov cov tsoos cylindrical thiab square lithium hlau phosphate roj teeb; los ntawm cov ntawv thov roj teeb hluav taws xob, txij li thaum pib ntawm kev siv mus rau hnub tim, qhov kev faib ua feem ntawm kev siv roj teeb hluav taws xob tau nce xyoo los ntawm xyoo sib txawv. Tam sim no thoob ntiaj teb mainstream lub teb chaws fais fab roj teeb daim ntawv thov piv ntawm txog 63%, yuav tsum mus txog 72% nyob rau hauv 2025. Nyob rau hauv lub neej yav tom ntej, nrog technology kev vam meej thiab tus nqi tswj, lithium roj teeb cov khoom qauv yuav tsum muaj kev ruaj ntseg thiab nthuav dav kev lag luam. qhov chaw.
2. Kev ua lag luam toj roob hauv pes
Li-ion roj teeb yog hom roj teeb uas nquag siv tshaj plaws thiab muaj ntau yam kev siv hauv kev lag luam ntawm lub zog tshiab, thiab kev lag luam xav tau rau Li-ion roj teeb loj. Ah, nce 44.2% xyoo-rau-xyoo. Ntawm lawv, Ningde Times ntau lawm suav txog 41.7%; BYD thib ob, nrog 18.9% ntawm kev tsim khoom. Nrog rau kev nthuav dav ntxiv ntawm kev lag luam muaj peev xwm, kev sib tw qauv ntawm lithium roj teeb kev lag luam tau nce zuj zus, Ningde Times, BYD thiab lwm cov lag luam txuas ntxiv nthuav lawv cov kev lag luam los ntawm kev tsim txiaj ntawm lawv tus kheej qhov zoo, thaum Ningde Times tau mus txog kev koom tes nrog kev lag luam. Samsung SDI thiab tau dhau los ua ib qho ntawm cov khoom siv hluav taws xob tseem ceeb ntawm Samsung SDI; BYD txuas ntxiv nce nws cov peev hauv kev lag luam ntawm cov roj teeb hluav taws xob los ntawm kev tsim txiaj ntawm nws cov kev ua tau zoo, thiab tam sim no nyob rau hauv BYD lub peev xwm tsim tawm hauv thaj chaw ntawm cov roj teeb hluav taws xob tau maj mam txhim kho thiab nkag mus rau theem ntawm kev tsim khoom loj; BYD muaj kev paub ntau ntxiv hauv qhov tob thiab ua tiav ntawm cov khoom siv raw lithium cov ntaub ntawv, nws cov nickel ternary lithium siab, cov khoom siv graphite muaj peev xwm ua tau raws li cov kev cai ntawm cov tuam txhab roj teeb lithium feem ntau.
3.Lithium roj teeb cov ntaub ntawv ntsuam xyuas
Los ntawm cov tshuaj muaj pes tsawg leeg, muaj cov ntaub ntawv cathode feem ntau (xws li cov ntaub ntawv lithium cobaltate thiab lithium manganate cov ntaub ntawv), cov khoom tsis zoo electrode (xws li lithium manganate thiab lithium hlau phosphate), electrolyte (suav nrog sulfate tov thiab nitrate tov), thiab diaphragm (xws li LiFeSO4 thiab LiFeNiO2). Los ntawm cov khoom ua tau zoo, tuaj yeem muab faib ua cov khoom zoo thiab tsis zoo electrode. Lithium-ion roj teeb feem ntau siv cathode los txhim kho kev them nqi, thaum siv lithium ua cov khoom siv cathode; tsis zoo electrode siv nickel-cobalt-manganese alloy; Cov khoom siv cathode feem ntau suav nrog NCA, NCA + Li2CO3 thiab Ni4PO4, thiab lwm yam; Tsis zoo electrode raws li ion roj teeb nyob rau hauv cov khoom cathode thiab diaphragm yog qhov tseem ceeb tshaj plaws, nws qhov zoo cuam tshuam ncaj qha rau kev ua haujlwm ntawm lithium-ion roj teeb. Txhawm rau kom tau txais cov nqi siab thiab tso tawm lub zog tshwj xeeb thiab lub neej ntev, lithium yuav tsum muaj ob qho kev ua haujlwm siab thiab lub neej ntev. Lithium electrodes tau muab faib ua cov roj teeb hauv lub xeev, cov roj teeb ua kua thiab cov roj teeb polymer raws li cov khoom siv, ntawm cov roj ntsha polymer yog cov thev naus laus zis zoo nrog cov nqi zoo thiab tuaj yeem siv hauv xov tooj ntawm tes thiab lwm yam khoom siv hluav taws xob; solid-state fais fab tuag vim muaj zog ceev ceev thiab tsis tshua muaj nqi ntawm kev siv, haum rau lub zog cia thiab lwm yam teb; thiab lub zog polymer vim lub zog qis dua thiab tus nqi qis dua tab sis siv tsawg zaus, haum rau lithium roj teeb pob. Polymer roj hlwb tuaj yeem siv rau hauv xov tooj ntawm tes, laptops thiab cov koob yees duab digital; solid-state roj teeb technology yog tam sim no nyob rau hauv kev sim theem.
4.Cov txheej txheem tsim khoom thiab kev txheeb xyuas tus nqi
Cov khoom siv hluav taws xob siv hluav taws xob lithium roj teeb yog tsim los ntawm cov hluav taws xob hluav taws xob siab, uas yog tsim los ntawm cov khoom zoo thiab tsis zoo electrode thiab cov ntaub ntawv diaphragm. Qhov kev ua tau zoo thiab tus nqi ntawm cov khoom siv cathode sib txawv heev, qhov zoo dua qhov kev ua tau zoo ntawm cov ntaub ntawv cathode, tus nqi qis dua, thaum cov khoom siv diaphragm tsis zoo, tus nqi ntau dua. Raws li Tuam Tshoj Kev Lag Luam Xov Xwm Network cov ntaub ntawv qhia tias cov neeg siv khoom siv hluav taws xob lithium roj teeb zoo thiab tsis zoo electrode cov ntaub ntawv suav txog 50% txog 60% ntawm tag nrho cov nqi. Cov khoom siv zoo yog tsim los ntawm cov khoom tsis zoo tab sis nws cov nqi them rau ntau dua 90%, thiab nrog rau cov khoom lag luam tsis zoo tus nqi nce, cov khoom lag luam maj mam nce.
5. Cov khoom siv txhawb nqa cov khoom siv
Feem ntau, cov khoom siv roj teeb lithium suav nrog kev txhaj tshuaj molding tshuab, laminating tshuab, thiab cov xov kub kub, thiab lwm yam. Txhaj tshuaj molding tshuab: siv los tsim cov roj teeb loj lithium, feem ntau yog siv los ua kom muaj kev ua haujlwm siab heev rau cov txheej txheem sib dhos, thaum muaj kev sib khi zoo. Raws li qhov kev thov ntau lawm, nws tuaj yeem nruab nrog cov pwm sib xws, txhawm rau kom paub meej cov khoom ntim khoom (core, cov khoom tsis zoo, diaphragm, thiab lwm yam) thiab lub hnab ntawv. Stacking tshuab: Cov cuab yeej no tsuas yog siv los muab cov txheej txheem stacking rau lub hwj chim lithium roj teeb, uas feem ntau muaj ob qhov tseem ceeb: kev kub ceev stacking thiab kev qhia ceev ceev.
Post lub sij hawm: Oct-11-2022