Academician ntawm Ouyang Minggao: Peb Nta thiab Plaub Txoj Cai Tswjhwm ntawm Roj Teeb Kub Tso Tawm

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Pembekal Stesen Janakuasa Mudah Alih

Academician ntawm Suav Academy ntawm Sciences, xibfwb Ouyang Minggao, Tsinghua University, kuv lub teb chaws. Kev nyab xeeb roj teeb muaj qhov tseem ceeb heev ntawm daim ntawv thov kev thauj mus los thiab kev mus ncig niaj hnub, tshwj xeeb tshaj yog nyob rau hauv kev ruaj ntseg hluav taws xob, kuj tseem yog lub ntiaj teb tsom. US Department of Energy (DOE) thiab German Science Institute (BMBF) thiab cov kws tshawb fawb thoob ntiaj teb muaj npe nrov tau pib lub rooj sib tham thoob ntiaj teb roj teeb kev nyab xeeb (IBSW), thiab txuas ntxiv rau xyoo 2015 hauv Munich University hauv lub teb chaws Yelemees, 2017 hauv Sandia National Experiment hauv Tebchaws Meskas.

Chav, tau ua tiav thawj zaug thiab thib ob thoob ntiaj teb kev sib tham txog roj teeb kev nyab xeeb (IBSW). Thaum Lub Kaum Hli 7, 2019, 3rd International Battery Safety Seminar tau muaj nyob rau hauv Beijing. Lub Rooj Sib Tham Thoob Ntiaj Teb tau tuav los ntawm Tsinghua University Battery Safety Laboratory, lub ntsiab lus ntawm lub rooj sib tham yog "kev nyab xeeb siab dua-siab-tswj roj teeb rau cov tsheb hluav taws xob".

Hauv lub rooj sib tham, kws tshaj lij ntawm Suav Academy ntawm Kev Tshawb Fawb, xibfwb Ouyang Minggao, Tsinghua University, tau tshaj tawm cov lus tseem ceeb, qhia txog "Kev Tshawb Fawb Txog Kev Nyab Xeeb ntawm Tsinghua University Tsav Lithium Roj Teeb". Cov ntsiab lus tau teeb tsa, raws li hauv qab no: poj niam, txiv neej, txhua tus zoo! Kuv yog los ntawm Tsinghua University. Ua ntej ntawm tag nrho cov, peb qhia peb Tsinghua University lub zog tshiab zog system tshawb fawb pawg.

Txij li xyoo 2001, peb txij li xyoo 2001 yog qhov tseem ceeb tshwj xeeb kev tshawb fawb thiab kev txhim kho pab pawg ntawm lub teb chaws tshiab lub zog tsheb, thiab nws kuj yog pawg thawj coj hauv Suav teb thiab Tebchaws Meskas. Peb pab neeg yog ib qho tseem ceeb rau ntau yam kev tshawb fawb, suav nrog cov roj teeb lithium fais fab, roj teeb fais fab thiab hluav taws xob hybrid. Hais txog lub hwj chim lithium roj teeb, peb tseem ceeb ua kom muaj kev nyab xeeb; peb yog ib qho tseem ceeb los ua cov kav ntev hauv cov roj teeb fais fab; Nyob rau hauv cov nqe lus ntawm hybrid, peb yog ib qho tseem ceeb los ua emission tswj ntawm internal combustion engine.

Yog li qhov no yog peb lub ntsiab lus tseem ceeb. Hnub no kuv tau muab koj ib qho kev qhia tseem ceeb rau peb cov kev tshawb fawb txog kev nyab xeeb. Tsinghua University Battery Safety Lab muaj nyob rau xyoo 2009.

Lub hom phiaj yog ua kom muaj kev nyab xeeb ntawm roj teeb. Tshwj xeeb, lub roj teeb thermal tawm ntawm kev tswj. Ntawm no kuv qhia peb txog kev tshawb fawb kev nce qib hauv thermal out-of control.

Txhua leej txhua tus nkag siab tias kev ruaj ntseg yog qhov teeb meem ntawm kev tsom mus rau lub tsheb hluav taws xob, thiab muaj ntau yam laj thawj ua rau muaj kev nyab xeeb. Thaum lub thermal tawm ntawm kev tswj yog induced nyob rau hauv ib lub roj teeb, tag nrho cov roj teeb system yuav kis tau, thiab thaum kawg qhov kev huam yuaj yog tsim. Qhov no yog qee qhov ntawm peb cov neeg koom tes hauv kev nyab xeeb roj teeb, suav nrog cov tuam txhab tseem ceeb thoob ntiaj teb thiab cov tuam txhab roj teeb tseem ceeb, nrog rau cov tuam txhab tsheb tseem ceeb thiab cov tuam txhab roj teeb tseem ceeb hauv Suav teb, thiab peb kuj tso cai cov cuab yeej cuab tam patents, cov tuam txhab hauv tsev thiab txawv teb chaws, thiab lwm yam.

Qhov no yog peb lub roj teeb kev nyab xeeb kuaj. Nag hmo, ntau tus neeg tuaj koom tau tuaj xyuas peb lub chaw kuaj mob. Zoo siab txais tos txhua tus tuaj saib thiab sib pauv.

Muaj ntau txoj hauv kev hauv peb lub chaw soj nstuam kev nyab xeeb roj teeb, uas yog qhov txawv ntawm thermal tawm-ntawm kev sim nrog ARC kom sov-tawm ntawm kev tswj. Peb yog lub ntiaj teb chav tsev ntawm ARC kev sim ntawm cov roj teeb lithium uas muaj peev xwm loj. Tom qab ib tug loj tus naj npawb ntawm cov kev tshawb fawb soj ntsuam, peb summed li peb yam ntxwv ntawm lub roj teeb thermal tawm-ntawm kev tswj, tus kheej-kub pib kub T1, thermal tawm-los ntawm kev tswj T2, thermal out-of-tswj qhov siab tshaj plaws kub T3, peb kuj tau ua ntau hom fais fab lithium roj teeb kuaj, Raws li txoj cai no.

T2 yog qhov tseem ceeb tshaj plaws, dab tsi tshwm sim T1 yog qhov tseeb dua, feem ntau SEI zaj duab xis pib, T3 nyob ntawm tag nrho cov tshuaj tiv thaiv enthalpy, T2 tsis meej heev, tab sis nws kuj yog qhov tseem ceeb tshaj plaws, vim li cas thiaj li muaj qhov qeeb qeeb ntawm cov cua sov yuav dheev ua rau lub taub hau ntse, thiab tus nqi nqa tuaj yeem ncav cuag 1000 degrees ib ob lossis ntau dua, uas yog qhov tseem ceeb ntawm cov cua sov. Yog li ntawd, los ntawm kev tshawb nrhiav T2, muaj peb yam tseem ceeb. Thawj qhov yog kom meej meej, nws yog sab hauv luv luv.

Nws yog thaum kawg muaj feem xyuam rau lub diaphragm, uas yog luv luv-circuited. Kuj tseem muaj cov khoom siv tsis raug cai tshiab tso tawm cov pa oxygen, cov lithium lithium, suav nrog cov kev txwv tsis zoo ntawm cov pa oxygen, qhov tsis zoo lithium, lub diaphragm vau, peb qhov laj thawj yog qhov kawg ntawm kev tsim T2. Hauv qab no kuv tau qhia peb lub tswv yim uas tau hais ua ntej rau lub tshuab thiab kev nce qib ntawm kev tswj cov thermal tawm ntawm kev tswj, suav nrog thawj zaug, sab hauv luv Circuit Court thiab luv Circuit Court ntawm peb tswj, yog BMS.

Qhov thib ob, lub thermal tawm ntawm kev tswj thiab thermal tsim ntawm lub roj teeb tshwm sim los ntawm qhov zoo txwv. Thib peb, qhov ntsuas kub tau tshwm sim los ntawm cov tshuaj tiv thaiv muaj zog ntawm lithium lithium thiab electrolyte thiab peb tswj kev them nyiaj. Yog tias peb lub thev naus laus zis, peb lub thev naus laus zis tuaj yeem daws qhov teeb meem thermal out-of control.

Peb muaj qhov ua kom yuam kev kawg, uas yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws, peb yuav tsum nkag siab txog cov txheej txheem thermal, peb yuav tsum nkag siab txog txoj cai ntawm kev sib kis ntawm kev sib kis, peb yuav tsum ua tib zoo tshem tawm cov thermal kis. Cia kuv qhia koj txog plaub yam no: Ua ntej, luv luv Circuit Court thiab BMS. Nws yog qhov tseeb dua tias cov laj thawj xws li kev sib tsoo, kev sib tsoo, thiab thaum kawg lub kua muag ntawm lub diaphragm, los yog vim li cas rau hluav taws xob, them tshaj tus nqi, ceg siv lead ua lithium, dendritic puncture, los yog overheating, ntawm chav kawm, yuav thaum kawg overheating, overheating yuav ua rau lub cev qhuav dej ntawm lub diaphragm, tag nrho cov yog vim li cas muaj feem xyuam rau cov txheej txheem ntawm lub luv luv Circuit Court, tab sis nws yuav tsis sib txawv. kawg mus rau lub diaphragm tsoo thiab diaphragm melting.

Yog li peb siv cov cua kub calorimeter thiab DSC, ib qho yog los piav qhia nws cov txheej txheem los ntawm cov khoom siv exotherm, ib qho yog kom sov tawm ntawm tag nrho ib lub roj teeb los ntawm kev hloov hluav taws xob ntawm tag nrho ib lub roj teeb, thiab muab cov thermal tawm ntawm kev tswj kev sim pob taws cov khoom siv thermal yog tshuaj ntsuam xyuas, uas yog cov txheej txheem ntawm thermal tawm ntawm kev tswj tom qab peb niaj hnub. Peb tuaj yeem pom tias cov diaphragm melting tuaj yeem ua rau hauv lub voj voog luv luv, pib qhov kub thiab txias, thiab cov diaphragm sib tsoo yuav tsim T2, ncaj qha ua rau thermal tawm ntawm kev tswj, qhov no yog qhov laj thawj ntau dua. Peb kuj siv ntau lwm txoj kev pabcuam, suav nrog ntau yam kev tshuaj xyuas cov ntaub ntawv, thiab cov txheej txheem ntawm thermal hnyav thiab huab hwm coj spectrometry los tshuaj xyuas ntau yam khoom.

Qhov no yog peb txoj kev tsom xam yooj yim, koj tuaj yeem txheeb xyuas ntau yam roj teeb, ntau yam txheej txheem. Qhov no yog thawj zaug, thiab nws kuj yog ib hom kev thermal out-of-control txoj kev, txawm li cas los xij, peb tuaj yeem ua haujlwm ntau los ntawm lub kaum sab xis tsim, tsis dhau nyias, tab sis lub zog txaus, tab sis qhov nruab nrab muaj qhov teeb meem rau luv luv Circuit Court, yog li peb yuav tsum tiv thaiv kev luv luv Circuit Court, peb yuav tsum kawm luv luv Circuit Court, luv luv-circuited thwmsim yog cov complex, tsis muaj mature vent qauv, yog li ntawd peb yuav tsum tsis txhob muaj teeb meem nrog luv luv Circuit Court, peb yuav tsum tau kawm cov luv luv Circuit Court, luv luv-circuit thwmsim yog complex, tsis muaj mature vent norms, yog li ntawd peb yuav tsum tsis txhob hnov ​​qab txog lub luv luv Circuit Court. cua sov mus rau ib qho kub, cia lub cim xeeb alloy ntse ntse, ua kom sov tawm ntawm kev tswj. Los ntawm cov ntaub ntawv thiab peb tus kheej kev tshawb fawb, muaj plaub yam tseem ceeb hauv luv luv circuits.

Qee qhov luv luv tuaj yeem ua rau thermal tawm ntawm kev tswj tam sim ntawd, tab sis qee qhov luv-circuit yog maj mam hloov zuj zus, thiab qee qhov luv luv yuav tsis muaj kev phom sij, tab sis qee qhov luv luv yuav ua rau muaj kev phom sij heev, thiab qee qhov luv luv Circuit Court ib txwm qeeb, thiab muaj qee qhov luv luv Circuit Court los ntawm qeeb mus rau kev hloov pauv, muaj ntau hom. Txog qhov kawg no, peb kuj tau ua qee qhov kev sim simulation, Kuv tsis tau piav qhia ntawm no. Nyob rau hauv luv luv, peb thaum kawg pom tau hais tias cov evolution ntawm luv luv circuits nyob rau hauv lub evolution hom yog lub voltage poob, thawj txheej txheem yog ib qho tseem ceeb rau poob lub voltage.

Nws yuav yog qhov kub thiab txias hauv qhov thib ob, thiab thaum kawg ua kom sov tawm ntawm kev tswj. Yog li hais txog qhov qeeb no, peb yuav tsum nyob rau hauv nws cov txheej txheem thawj zaug, uas yog, qhov voltage poob theem yog txhawm rau txheeb xyuas qhov teeb meem, khaws nws, tiv thaiv nws los ntawm kev ua kom tsis zoo ntxiv, qhov no yog peb qhov kev tshawb nrhiav luv luv hauv Circuit Court Algorithm, qhov no yog algorithm rau series roj teeb pob, suav nrog thawj zaug yog txheeb xyuas los ntawm qhov sib xws ntawm qhov hluav taws xob, thiab lub roj teeb hluav taws xob yuav poob, qhia tias lub roj teeb hauv lub cev muaj zog. Tab sis yog tias koj tsis tuaj yeem paub meej, cia peb ntxiv qhov kub thiab txias.

Yog tias koj tau hloov pauv tom qab kev hloov pauv, peb ntxiv cov roj hluav taws xob hluav taws xob, yog li muaj txoj hauv kev kom qeeb thiab hloov pauv. Piv txwv li, kev txheeb xyuas qhov sib xws ntawm lub koob roj teeb pob voltage, kuv tsis qhia txog qhov tshwj xeeb algorithm. Koj tuaj yeem pom tseeb tias lub roj teeb uas poob ntawm qhov hluav taws xob tuaj yeem pom tseeb.

Tau kawg, peb yuav tsum tau ua ntau txoj hauv kev engineering, thiab muaj ib qho yooj yim algorithm uas tsis txaus. Nws kuj tseem tsim nyog los koom nrog cov kev paub dhau los ntawm ntau txoj haujlwm los txiav txim, qhov no yog cov ntaub ntawv, yog li peb xaiv los koom tes nrog lub tuam txhab. Nyob rau hauv luv luv, peb muaj peev xwm warw zoo los ntawm qhov chaw no, xws li ib tug micro-short circuit, vim hais tias ntawm lub ceev ceev, vim hais tias lub roj teeb yuav muaj ib tug deformation thaum lub sij hawm them nqi thiab tawm, nws yuav muaj ib tug strain, uas yuav ua rau tam sim ntawd deterioration ntawm micro-short Circuit Court, zoo li tib neeg cov hlab ntsha ntawm cov quav hniav nyob rau hauv, mam li nco dheev lub thrombosis yog ib tug xovxwm, yog hais tias nws yog ib yam nkaus thiab qeeb voltage, uas yuav ua rau kom kub thiab txias. saib nws.

Yuav ua li cas? Peb yuav tsum siv lub ntsuas roj no, uas tuaj yeem ua yam tsawg kawg 3 feeb ua ntej ua cov lus ceeb toom thermal tawm. Nyob rau hauv luv luv, peb tsim ib tug tshiab tiam roj teeb tswj system raws li cov algorithms. Qhov thib ob yog qhov thib ob mechanism peb nyuam qhuav hais, puas yog luv luv xwb? Puas muaj qhov kub poob yam tsis muaj qhov luv luv Circuit Court? Qhov tseeb, tsis muaj qhov luv luv Circuit Court kom muaj thermal tawm ntawm kev tswj.

Raws li cov diaphragm tas li nce, cov ntsiab lus nickel ntawm cov khoom zoo electrode peb cov khoom yog tas li nce, nws tso tawm qhov kub thiab txias tsis tu ncua, uas yog, thermal stability ntawm cov khoom zoo electrode yog zuj zus, tab sis peb diaphragm yuav zoo dua thiab zoo dua, yog li tsis muaj zog qhov txuas yuav maj mam dhau los ua cov khoom zoo. Qhov no yog qhov kev sim peb tau ua, tsis muaj luv luv Circuit Court, muaj cua sov tawm ntawm kev tswj, peb tshem tawm cov electrolyte, muaj cua sov tawm ntawm kev tswj, thiab koj tuaj yeem pom nws los ntawm nruab nrab, muaj qhov tsis muaj cua sov, qhov no yog qhov zoo thiab qhov tsis zoo hauv ib daim, ua tiav cov hmoov zoo thiab tsis zoo yog muab tso rau hauv ib daim, muaj qhov tso tawm siab kawg, qhov no yog vim li cas nws thiaj li tshwm sim. Tshwj xeeb, qhov kub siab tshaj plaws nyob qhov twg? Cov khoom siv electrode theem hloov pauv, tsis muaj oxygen.

Saib ntawm lub ncov ntawm holland, thaum qhov zoo thiab qhov tsis zoo sib xyaw ua ke, qhov tsis zoo electrode yog oxidized. Yog tias tsis muaj qhov ncov, nws raug kaw, ua pov thawj tias cov cua sov tsim los ntawm qhov zoo heterogenesis thiab cov tshuaj tiv thaiv tsis zoo electrode. Yog li cas qhov no mechanism? Nws yog cov khoom sib pauv ntawm qhov zoo thiab tsis zoo electrode, uas yog qhov kawg ntawm cov pa oxygen mus rau qhov tsis zoo electrode los tsim cov tshuaj tiv thaiv zoo heev, uas ua rau lub thermal tawm ntawm kev tswj.

Hais txog qhov thermal out-of-control ntawm sab hauv luv luv Circuit Court, peb tuaj yeem tsim qauv raws li tag nrho cov kev mob tshwm sim tsuas yog tag nrho cov kev mob tshwm sim. Los ntawm ntau tus nqi scanning ntawm DSC, cov tshuaj tiv thaiv tsis tu ncua ntawm tag nrho cov kev cuam tshuam sab nraud tuaj yeem suav nrog hauv cov qauv no, ntawm chav kawm, los ntawm qee txoj kev, thaum kawg Ua ke nrog kev txuag hluav taws xob, kev txuag tau zoo tuaj yeem suav cov txheej txheem ua tiav ntawm thermal out-of-control, thiab tuaj yeem ua tau zoo nrog kev sim. Nyob rau hauv txoj kev no, peb tuaj yeem tsim los ntawm cov kev paub dhau los los tsim cov qauv tsim qauv, ntawm chav kawm, muaj ntau cov ntaub ntawv, tsis muaj cov ntaub ntawv tsis yog, qhov no yog cov tshuaj tiv thaiv ntawm cov tshuaj tiv thaiv ntawm ntau yam ntaub ntawv thiab kev sib raug zoo ntawm cov cua sov.

Raws li cov ntaub ntawv, peb yuav tsum tau ua kom zoo dua cov ntaub ntawv, qhov kev txhim kho tseem ceeb kuv xav tias ob, ib qho yog kev txhim kho cov khoom zoo, ib qho yog electrolyte. Ua ntej tshaj plaws, peb tuaj yeem nce qhov kub ntawm cov pa oxygen los ntawm polysantial mus rau ib qho siv lead ua, thiab nws tuaj yeem pom tau tias cov yam ntxwv ntawm thermal out-of-control tau hloov. Piv txwv li, peb siv high concentration electrolytes, nws kuj yog ib txoj kev.

Tau kawg, txhua tus tuaj yeem tshawb nrhiav cov khoom electrolytes ntau dua. Cov khoom electrolytes yog qhov nyuaj heev. Peb ntseeg hais tias lub concentrate nws tus kheej muaj ib tug zoo feature.

Piv txwv li, nws qhov hnyav thermal poob qis, thiab lub zog exothermic tau poob. Los ntawm nruab nrab no peb tuaj yeem pom nws, thiab qhov zoo tsis cuam tshuam nrog cov electrolyte, vim tias peb cov electrolysis tshiab yog DMC, DMC yog 100 degrees Nws tau raug evaporated. Qhov no yog qhov peb ntseeg tias cov kauj ruam tom ntej ntawm electrolyte yog ntau dua li cov khoom siv hluav taws xob, ntau dua yog los ntawm cov khoom siv ntxiv ntawm cov electrolyte, siab concentration electrolyte, thiab cov electrolytes tshiab tuaj yeem ua tau.

Ntu III, hais txog lithium lithium thiab kev them nyiaj tswj. Txhua tus nkag siab tias kuv yuav qhia lub roj teeb lithium-ion. Tom qab lub roj teeb yuav txo qis, qhov kev nyab xeeb ntawm lub neej yuav ua li cas? Peb tau pom tias qhov tseem ceeb tshaj plaws nyob rau hauv nruab nrab ntawm tag nrho lub neej kev ruaj ntseg yog los tshuaj xyuas lithium, yog tias tsis muaj xwm txheej ntawm lithium-tso roj teeb kev nyab xeeb tsis tuaj yeem ua rau tsis zoo, tsuas yog vim li cas rau kev puas tsuaj yog los tshuaj xyuas lithium.

Peb tuaj yeem pom cov ntaub ntawv pov thawj, xws li kub ceev ceev, tsis tshua muaj nqi ceev ceev, qhov kub ntawm T2 maj mam txo, thiab qhov kub poob tau tshwm sim ua ntej, qhov no yog roj teeb muaj peev xwm attenuation, los ntawm 100% mus rau 80%. Obviously sib xws, lithically los ntawm qhov kub thiab txias them los ntawm lub roj teeb tshiab mus rau lub qub roj teeb. Lwm qhov yog them ceev ceev.

Tom qab tus nqi nrawm, nws tuaj yeem pom tias qhov ntsuas kub poob hauv T2 poob rau 100 degrees. Txij thaum pib ntawm lub roj teeb tshiab 200 mus rau ntau tshaj 100 degrees, qhov kub poob tshwm sim ua ntej, sai dua. Qhov no yog vim li cas? Nws tseem yog lithium lithium, peb tuaj yeem pom tias muaj ntau lithiums, thiab lithium muaj tsawg heev.

Kev soj ntsuam ntawm lithium muaj qhov loj ntawm exotherm, yog li nws tseem yog lithium, nag lossis daus lithium yuav ncaj qha cuam tshuam nrog cov electrolyte, ua rau kub nce ntau, tuaj yeem ua rau kub poob. Yog li ntawd, peb yuav tsum kawm lithium, ib yam li luv luv hauv peb txoj kev kawm, yuav kawm lithium li cas? Ua ntej peb tuaj yeem pom cov txheej txheem ntawm lithium lithium. Qhov no yog them, them dhau lawm, nws tuaj yeem pom tias lithium pib pib, muaj qhov loj ntawm lub nraub qaum, qhov no yog cov txheej txheem ntawm lithium.

Qhov kev sim tam sim no tuaj yeem pom los ntawm Kab Liab, qhov no yog lub tshuab ua haujlwm lithium, thim rov qab lithium. Kuj tseem muaj ib feem ntawm kev tuag, thim rov qab lithium, tuaj yeem rov ua dua, thiab cov hluav taws xob tsis zoo yog qhov muaj peev xwm dhau, thiab cov theem dhau hluav taws xob nce mus rau 0, uas tuaj yeem thim rov qab rau lithium. Tau kawg, cov lithium tuag tsis tuaj yeem rov qab tau.

Qhov no muab kev ceeb toom rau peb. Peb puas tuaj yeem dhau cov txheej txheem ntawm thim rov qab lithium txhawm rau txheeb xyuas cov nyiaj lithium, piv txwv li, nws rov qab mus rau cov txheej txheem no, cov txheej txheem no sib raug rau lub platform ntawm qhov hluav taws xob, peb tau simulated, thiab pom lub platform no. Thaum peb tsawg heev, tsis muaj qhov tshwm sim, nws yog ib qho voltage rau polarize, tsis muaj lub platform no.

Yog li lub platform no yog lub teeb liab zoo, qhov kawg ntawm lub platform peb tuaj yeem txiav txim siab los ntawm kev sib txawv, qhov no yog qhov kawg ntawm lub platform, sawv cev rau lithium kom muaj nuj nqis, thiab muaj kev sib raug zoo nrog tag nrho cov nyiaj lithium, tuaj yeem kwv yees cov qauv. Peb kuj pom tawm los ntawm kev sim uas qhov no yog kev them nyiaj, sawv ntsug. Peb kuj pom tias lithium tuaj yeem pom los ntawm nruab nrab, qhov no yog qhov tshwm sim ntawm kev sim.

Yog li hauv txoj kev no peb tuaj yeem pom nws tom qab them nws, tab sis qhov no yog qhov tshwm sim tom qab them nqi, peb puas tuaj yeem tsis cia nws lithium hauv cov txheej txheem them nyiaj? Muaj peev xwm daws nrog lithium kom ntau li ntau tau, tau kawg, qhov no xav kom peb pab peb tus qauv. Qhov no yog tus qauv yooj yim P2D peb tau ua, koj tuaj yeem pom qhov muaj peev xwm ntawm qhov tsis zoo electrode, tsuas yog hais tias qhov tsis zoo electrode muaj peev xwm thiab lithium lithium, tsuav yog peb tswj cov peev txheej dhau ntawm qhov tsis zoo electrode, peb tuaj yeem lav cov lithium. Los ntawm cov qauv no, koj tuaj yeem muab qhov nkhaus ntawm lithium them, peb cia qhov tsis zoo electrode muaj peev xwm tsis tsawg tshaj li xoom, koj tuaj yeem tau txais qhov zoo tshaj plaws them nkhaus rau lithium lithium.

Peb tuaj yeem siv peb-electrode los ntsuas qhov nkhaus no, uas yog peb qhov kev them nyiaj algorithm. Peb tau koom tes nrog lub tuam txhab, uas tuaj yeem pom tseeb tias kev siv cov txheej txheem no tuaj yeem paub txog lithium, tab sis qhov no yog cov txheej txheem calibration, thaum lub sij hawm ncua lub roj teeb lub attenuation kev ua tau zoo hloov tau, peb yuav ua li cas, peb yuav tsum tau tawm tswv yim, yog li peb tau muab tswv yim rau kev tswj algorithm rau lithium lithium, uas yog, muaj ib qho kev soj ntsuam tsis zoo ntawm cov hluav taws xob soj ntsuam. Overotic, qhov no yog tus soj ntsuam, qhov tseeb yog tus qauv lej. Qhov no zoo ib yam li peb SOC, peb muaj kev soj ntsuam algorithm, peb muaj cov lus tawm tswv yim ntawm qhov hluav taws xob, yog li peb tuaj yeem ua tiav kev tswj hwm lub sijhawm ntawm lithium charging, thiab peb kuj koom tes nrog lub tuam txhab.

Hauv cov txheej txheem no, peb tseem muaj qee qhov kev khuv xim, koj puas tuaj yeem siv lub sensor ncaj qha rau lub zog tsis zoo? Yog li ntawd, kev tshawb fawb ntxiv yog los tsim lub peev xwm tshaj qhov ntsuas no. Txhua leej txhua tus nkag siab txog peb cov electrodes ib txwm hais ua ntej. Nws lub neej yog txwv, tsis muaj txoj hauv kev los siv nws los ua lub sensor, thiab peb tsis ntev los no tau koom tes nrog cov tshuaj lom neeg.

Pab pawg chemical Zhang Qiang, vim tias lawv yog ib pab pawg uas muaj feem cuam tshuam nrog kev paub dhau los, kev ua tiav hauv cheeb tsam no, peb lub neej kev sim tuaj yeem ua tau ntau dua 5 lub hlis, ntau tshaj 5 lub hlis yuav tsum tau siv, vim tias peb qhov tiag tiag thaum daim ntawv thov tsuas yog nyob rau hauv tus nqi ceev, nws tsis tas siv, thiab nws txaus rau 5 lub hlis. Tom ntej no, peb txoj haujlwm yog ua raws li kev tawm tswv yim them nyiaj tswj ntawm qhov tsis zoo overtest zog sensor. Qhov thib plaub, thermal out-of control, yog tias peb tsis ua haujlwm nyob rau hauv pem hauv ntej, nws yog kev sib kis ntawm thermal out-of control thiab peb txoj kev tiv thaiv.

Txhua leej txhua tus nkag siab tias qhov kev tsim txom cov neeg kho tshuab ncaj qha pierces lossis extruded lub roj teeb tam sim ntawd tsim kev tawg, uas yog cov txheej txheem ntawm kev sib kis, qhov no yog kev sib kis ntawm peb qhov kev sib kis. Thawj qhov yog qhov ntsuas kub ntawm qhov chaw. Qhov no yog cov txheej txheem sib kis ntawm peb cov roj teeb thaum uas tig mus.

Lub mechanism ntawm kis tus txheej txheem yog saum toj no. Yog vim li cas nws yog ib feem ntawm seem, vim hais tias thaum thawj lub roj teeb yog thermostable, nws yuav luv luv, tag nrho cov hluav taws xob lawv yuav tuaj ntawm no, yog li ntawd lawv ua rau lub voltage poob, tab sis ib zaug nws yuav tawg, nws rov qab mus, qhov no yog cov yam ntxwv ntawm parallel thaum tshav kub kub poob. Qhov no yog pawg roj teeb series, thiab cov roj teeb series yog cov txheej txheem hloov hluav taws xob nkaus xwb.

Qhov no yog lwm qhov teeb meem, qhov pib ntawm qhov kev txiav txim, thaum kawg kis tau, ntawm chav kawm, vim hais tias muaj ib tug combustion nyob rau hauv nruab nrab, tsis tsuas yog tshav kub hloov lwm lub tsev, qhov no tam sim ntawd ua rau explosive xwm txheej, combustion xwm txheej, thiab lwm yam. Qhov no yog cov txheej txheem ntawm tag nrho cov txheej txheem, tag nrho cov txheej txheem PACK propagation, nws cov kev sib txuas lus tsis tu ncua, los ntawm D2 thawj zaug mus rau U2, D1 yog yuav luag ib txhij, ces lwm yam, qhov no yeej tsis yog lawm, vim hais tias muaj rwb thaiv tsev, qhov no prompts Peb tsim tseem ceeb heev rau cov roj teeb pob. Raws li, peb lub hom phiaj yog qhov tseeb raws li tus qauv simulation tsim, vim tias cov txheej txheem no nyuaj heev, yog tias tsuas yog cov kev paub dhau los nyuaj heev, qhov no yog qhov peb ua.

Txhua tus neeg yuav tsum paub, yuav ua li cas coj qhov tsis sib xws ntawm simulation, koj tuaj yeem kho qhov tsis muaj, tab sis tus lej ntawm qhov tsis muaj qab hau, yog li peb ua cov kev tshawb fawb ntxaws ntxaws, yuav ua li cas coj tsis yog txheej txheem txawj ntse, II tsis qhia meej ntawm no, ntau txoj hauv kev. Nrog rau qhov qauv calibration qauv, peb tuaj yeem tsim, qhov no yog qhov tsim ntawm cov rwb thaiv tsev kub. Lub roj teeb tsuas yog tsis txaus, thiab muaj cov qauv tsim txias.

Kuj tseem muaj qee qhov hluav taws xob rwb thaiv tsev, cua sov dissipation yuav tsum yog txhua yam ua tau, qhov no yog firewall technology tsim los ntawm peb cov tub ntxhais kawm, rwb thaiv tsev, tshav kub dissipation, thaiv los ntawm rwb thaiv tsev, tshav kub dissipation, thiab cua sov lub zog, ob qho tib si kev koom tes. Qhov no yog ntau qhov kev sim, qhov no yog qhov kev sim ntawm tag nrho cov roj teeb pob hauv cov tsiaj qus, ib txwm siv roj teeb pob, lub roj teeb pob nrog firewall. Lub roj teeb pob nrog firewalls nyuam qhuav pib qhov no, cov pa luam yeeb loj heev, maj mam, tsis muaj qhov kub hnyiab, tsis muaj qhov kub kub, cov khoom siv roj teeb ib txwm siv thaum kawg ua kom kub sib kis thiab combustion.

Peb tuaj yeem dhau qhov no, paub nws tiag. Qhov no yog hais txog kev ua haujlwm no, peb kuj koom nrog cov kev cai thoob ntiaj teb. Tam sim no peb tau ua ntxiv rau cov txheej txheem no yog eruption, ntau nyuaj, tam sim no peb tsis tau ntxiv rau qhov simulation, tus qauv eruption yog ntawm chav kawm, tab sis nws tsis yog.

Nws tuaj yeem pom los ntawm qhov kev sim uas muaj cov khoom siv hauv lub xeev, kua, gaseous tri-state, qhov nruab nrab gaseous no yog qee cov roj combustible, uas yog roj, lub xeev muaj zog yog qee yam khoom, feem ntau tsim cov nplaim taws. Yuav ua li cas? Ib qho yog los sau cov khoom me me, ib yam li lub tsheb tsoos, txhawm rau ntes cov teeb meem hauv cov lim. Lwm qhov yog diluted, cia cov roj combustible tshaj nws qhov hluav taws kub, qhov no yog qhov peb tab tom ua tam sim no.

Thaum kawg, kuv yuav ua cov ntsiab lus. Muaj peb txheej txheem ntawm thermal tawm ntawm kev tswj, uas lawv tau tshwm sim. Nyob rau hauv induction, muaj ntau yam laj thawj nyob rau hauv induction, kuv tau hais ntau heev, ntawm chav kawm, muaj ib feem ntawm peb lub cav sib tsoo, kuv tsis tau hais tias, tam sim no peb nyob rau hauv pem hauv ntej ntawm tej yam no, tej yam no tseem tseem tsis tau muaj kev tswj, peb xav tias tom qab ntawd.

Thib ob, thermal tawm ntawm kev tswj. Peb tau hais txog peb qhov kub thiab txias, ntawm peb qhov laj thawj tau qhia ntawm no. Muaj hluav taws kub thiab hluav taws kub hauv lub roj teeb.

Nws yog ib qho tseem ceeb yuav tau txiav txim siab los ntawm lub xeev ntawm cov electrolyte, lub boiling point ntawm lub electrolyte. Thaum kawg, nws kis tau, thiab peb tuaj yeem sib kis tau, muaj kev sib kis sai sai, xws li hluav taws kub, uas yog tawg mus rau qhov hluav taws kub hloov tau, thiab thaum kawg ua rau kub hnyiab heev, txhua yam teeb meem peb tau qhia ntawm no yog los daws. .