Nyob rau hauv nthwv dej ntawm lub zog tshiab puag ncig, cov roj teeb lithium-ion, tau ua rau cov tsheb thauj khoom hluav taws xob, tau ua kom muaj zog khaws cia, thiab cov neeg siv hluav taws xob. Txawm li cas los xij, kev ua tau zoo thiab lub neej ntawm lub roj teeb lithium roj teeb nyob ntawm cov kev tswj hwm ntawm cov xov tooj ntawm tes no tab sis kuj tseem nyob rau ntawm kev tswj hwm ntawm cov xov tooj hluav taws xob hauv txhua lub roj teeb. Cov khoom siv hluav taws xob zoo li microscopic sib txawv muaj qhov kev txiav txim siab txiav txim siab rau kev nyab xeeb rau kev nyab xeeb, siv zog siv hluav taws xob. Cov kab lus no qhia qhov tseem ceeb ntawm lub roj teeb hluav taws xob tsis tseem ceeb ntawm peb qhov ntev: cov txheej txheem me me, thiab cov kev daws teeb meem.
I. Voltage inconialistency: lub "uas ntsiag to tua" ntawm cov roj teeb tshuab
(1) catalyst rau kev nyab xeeb rau kev nyab xeeb
Cov roj teeb lithium yog qhov rhiab heev rau overcharging thiab dhau-rho tawm. Thaum tus neeg hlwb nyob rau hauv lub roj teeb ntim kev nthuav dav dav, txawm tias lub kaw lus tag nrho tseem nyob hauv qab kev tiv thaiv, cov hlwb no twb tau nyob rau hauv lub xeev overcharged. Lithium dendrite kev loj hlob nyob rau hauv cov cell no tuaj yeem thofig cig, ua rau muaj kev sib tw luv luv thiab ua rau cov thermal khiav tawm ntawm cov tshuaj tiv thaiv. Lub 2016 Samsung Galaxy Note7 Roj Teeb Qhov Teeb Meem Hauv Cathode coj mus rau cov zos volbumancy, thaum kawg ua rau tawg. Qhov no "barrle nyhuv" txhais tau tias lub zog tsis muaj zog dictates cov npoo kev nyab xeeb ntawm tag nrho cov roj teeb.
(2) txwv kev siv hluav taws xob
Thaum lub sij hawm tso tawm, cov tshuab tswj roj teeb (BMS) txiav tus txheej txheem ua ntej los tiv thaiv cov qis tshaj plaws ntawm tes los ntawm kev tawm mus. Kev sim cov ntaub ntawv qhia tau tias thaum lub voltage txheem sib txawv ntawm cov roj teeb ntim mus txog 50 MV, muaj peev xwm siv tau tsawg los ntawm 8-12%. Cov ntaub ntawv kev tshawb fawb los ntawm lub tsheb hluav taws xob cov khoom lag luam pom tseeb tias rau txhua 10 MV nce ntxiv hauv cov hluav taws xob tsis txaus, kev tsav tsheb yog txo los ntawm kwv yees li 1.5 kilometers. Xws li cov khib nyiab zoo li no yuav ntau dua li cov lus tshaj tawm hauv megawatt-teev lub zog khaws cia cov nroj tsuag, cuam tshuam ncaj qha cuam tshuam rov qab los ntawm kev nqis peev.
(3) nrawm nrawm ntawm kev voj voog ua haujlwm
Txoj kev voltage tsis txaus ntseeg yuam qee cov hlwb los ua haujlwm sab nraum lawv cov xeev zoo. Kev tshawb fawb qhia tau tias cov hlwb raug txhawb nqa 10% overcharging kev kawm 40% txo hauv kev voj voog voj voog. Qhov tsis txaus no tseem ua rau "Matthew cov txiaj ntsig": High-voltage cell hnub nyoog sai dua vim yog kev sib tw ua tsis tiav ntawm tag nrho cov roj teeb pob.
Ii. Cov hauv paus ua rau ntawm cov hluav taws xob tsis sib haum
(1) xam cov kev hloov pauv hauv kev tsim khoom
Cov kev hloov pauv hauv cov electrode txheej sib piv thiab cov khoom sib piv yeem tsim cov khoom muaj peev xwm pib qhov sib txawv ntawm {{0%}. 5% ntawm cov hlwb. Cov ntaub ntawv los ntawm cov chaw tsim hluav taws xob ua tau pom tias thawj zaug voltage nyob rau hauv ib qho batch ntau lawm tuaj yeem ncav cuag ib qho kev sib txawv ntawm 5% kev sib txawv (som) kev sib txawv. Qhov kev tsis sib xws me me no tau tshaj tawm nthuav dav dhau ntau pua ntawm kev them nqi-kev tawm mus ncig.
(2) Kev cuam tshuam zoo dua ib puag ncig
Cov qhab nia kub thiab txias exacerbate tsis sib xws: qhov kub nyob sab hauv uas muaj peev xwm ncav cuag los ntawm 0. 8% rau 1 degree kub nce. Kev sim ua lub ntiaj teb tiag tiag ntawm lub zog cia hluav taws xob qhia uas ntim tsis muaj kua txias hloov tripage hauv peb lub hlis. Neeg kho tshuab tshee thiab poob siab hloov hluav taws xob kis hluav taws xob, kev cuam tshuam lithium-ion khiav teb chaws txoj kev thiab ua kom nrawm voltage divergence.
(3) Cov qauv tsim qauv nyob hauv cov tswv yim them nyiaj
Tsoos tas li-tam sim no-constant-voltage (CC-CV) them tsis muaj kev tswj cov txheej txheem dynamic. Kev sim qhia pom tias cov kev sib tw hluav taws xob nruab nrab ntawm cov khoom siv muaj zog thiab cov hlwb tsis muaj zog Hauv kev them nyiaj ceev-them, qhov tsis txaus no yuav ntau dua: {{{}} feeb ceev dua kev sib zog tshaj li qeeb them.
III. Cov Ntau Yam Ntsuas Ntsuas Cov Technologies: Tsim Ib Qhov Kev Ruaj Ntseg
(1) Synergy ntawm passive thiab kev sib npaug
Passive ntsuas txo lub zog hauv high-voltage hlwb los ntawm resistors, muab tus nqi qis tab sis tsis zoo (feem ntau<30%). Active balancing uses capacitors or inductors to transfer energy, achieving up to 92% efficiency in bidirectional DC-DC solutions adopted by some electric vehicles. Hybrid architectures combine both approaches: active balancing during fast charging and passive balancing in daily use, optimizing efficiency and cost-effectiveness.
(2) Kev Txawj Ntse Algorithm Optimization
Qauv kev kwv yees (MPC) Algorithms xam cov kev them nqi theem hauv lub sijhawm, tswj cov kab hluav taws xob hauv qab 15 MV. Kev yoog fuzzy tswj dynamically kho qhov ntsuas, txuas ntxiv lub neej los ntawm 18% nyob rau hauv lub zog cia cov khoom kuaj. Tshuab Kev Npaj Kev Ntsuam Xyuas Kev Ua Lag Luam-Kev Tso Tawm Cov Ntaub Ntawv Loj kom twv xyuas cov kev cuam tshuam ntawm tes ntawm tes, ua rau kev tiv thaiv kev tiv thaiv kev cuam tshuam.
(3) THERCAL-hluav taws xob Coupling Upsurations
Phase-hloov cov ntaub ntawv (PCM) homogenize kub, txo cov qauv hluav taws xob sib txawv ntawm 40%. Lub photovoltaic cia project siv ib lub thermoelectric coupling system tswj Volapage hauv qab 30 MV thoob plaws {}} degree rau 50 degree ib cheeb tsam. Kua Hlau Txias Nrog Cov Pulsed Them Cov tswv yim txo voltage tsis txaus ntawm 65% thaum lub sij hawm ceev ceev.
IV. Kev lag luam xyaum thiab yav tom ntej saib xyuas
Nyob rau hauv lub chaw siv hluav taws xob sector, tesla's "cell-qib parallel kev twb kev txuas + module-qib nquag ntsuas" zoo% ua tiav 99.8% voltage muaj kev sib xws. CATL's "Cloud-Dev" Kev Sib Koom Tes BMS Ua Rau Millisecond-qib voltage cov cai ntawm ntug computing. Nyob rau hauv lub zog cia, Sungrow's "cluster-qib hluav taws xob router" tswj cov hluav taws xob tsis zoo lossis sib npaug nrog 25 MV hauv cov khoom muaj peev xwm ntawm 12%.
Saib tom ntej, digital ntxaib-based Virtual Sensual yuav pab nanoscale voltage xyuas. Kev siv roj teeb-State Technology yuav hloov kho qhov ntsuas hluav taws xob, thaum lub caij nyoog taug kev yuav hloov voltage muaj kev tswj hwm los ntawm reactive kom muaj kev sib cav.
Tag
Lithium roj teeb veletage sib xws tswj yog, ntawm nws cov tub ntxhais, ib qho tshuaj lom los ntawm lub zog. Nruab nrab ntawm cov nanoscale lub ntiaj teb ntawm cov ntaub ntawv thiab megawatt-teev system, txawm feeb voltage hloov pauv tuaj yeem ua rau npauj npaim teebmeem. Raws li lub zog hluav taws xob hloov kho kom sai, tsim cov kev tswj hwm kev tiv thaiv, thiab kev tswj hwm kev sib tw ua rau lub zog kev ruaj ntseg thiab kev lag luam kev sib tw. Thaum txhua tus cell resonates hauv kev sib haum xeeb synchronization raws li kev tswj hwm, yuav yog kauj ruam mus rau hauv ib lub sijhawm ntawm kev ua tau zoo, muaj kev nyab xeeb, thiab muaj zog.