3. Kev ruaj ntseg tshuab
Txawm hais tias cov roj teeb lithium ion muaj ntau yam kev phom sij, nyob rau hauv cov kev mob tshwj xeeb ntawm kev siv thiab nrog qee yam kev ntsuas, lawv tuaj yeem tswj tau qhov tshwm sim ntawm cov kev tshwm sim sab nraud thiab kev ua phem rau hauv cov roj teeb hlwb kom ntseeg tau tias lawv siv tau zoo.Cov hauv qab no yog cov lus qhia luv luv rau ntau yam kev nyab xeeb uas siv rau cov roj teeb lithium ion.
(1) Xaiv cov khoom siv raw nrog kev nyab xeeb dua
Cov ntaub ntawv zoo thiab tsis zoo polar active cov ntaub ntawv, cov ntaub ntawv diaphragm thiab electrolytes uas muaj kev nyab xeeb dua yuav tsum raug xaiv.
a) Xaiv cov khoom zoo
Kev nyab xeeb ntawm cov ntaub ntawv cathode feem ntau yog nyob ntawm peb yam hauv qab no:
1. Thermodynamic stability ntawm cov ntaub ntawv;
2. Tshuaj stability ntawm cov ntaub ntawv;
3. Lub cev muaj zog ntawm cov khoom siv.
b) Kev xaiv cov khoom siv diaphragm
Lub luag haujlwm tseem ceeb ntawm lub diaphragm yog cais cov electrodes zoo thiab tsis zoo ntawm lub roj teeb, tiv thaiv luv luv los ntawm kev sib cuag ntawm qhov zoo thiab tsis zoo electrodes, thiab ua kom cov electrolyte ions hla dhau, uas yog, nws muaj hluav taws xob rwb thaiv tsev thiab ion. conductivity.Cov ntsiab lus hauv qab no yuav tsum raug sau tseg thaum xaiv lub diaphragm rau cov roj teeb lithium ion:
1. Nws muaj hluav taws xob rwb thaiv tsev kom ntseeg tau tias cov neeg kho tshuab kev sib cais ntawm qhov zoo thiab tsis zoo electrodes;
2. Nws muaj qee qhov aperture thiab porosity kom ntseeg tau tias tsis muaj kev tiv thaiv thiab siab ionic conductivity;
3. Cov khoom siv diaphragm yuav tsum muaj tshuaj lom neeg txaus thiab yuav tsum tiv taus electrolyte corrosion;
4. Lub diaphragm yuav tsum muaj lub luag haujlwm ntawm kev tiv thaiv tsis siv neeg kaw;
5. Lub thermal shrinkage thiab deformation ntawm diaphragm yuav tsum tsawg li tsawg tau;
6. Lub diaphragm yuav tsum muaj cov tuab tuab;
7. Lub diaphragm yuav tsum muaj lub cev muaj zog thiab txaus puncture resistance.
c) Xaiv cov electrolyte
Electrolyte yog ib feem tseem ceeb ntawm lithium ion roj teeb, uas plays lub luag hauj lwm ntawm kev xa thiab ua tam sim no ntawm lub zoo thiab tsis zoo electrodes ntawm lub roj teeb.Cov electrolyte siv nyob rau hauv lithium ion roj teeb yog ib qho tshuaj electrolyte tsim los ntawm dissolving tsim nyog lithium ntsev nyob rau hauv cov organic aprotic mixed solvents.Feem ntau nws yuav tsum ua raws li cov cai hauv qab no:
1. Muaj tshuaj lom neeg ruaj khov, tsis muaj tshuaj lom neeg nrog cov khoom siv hluav taws xob, cov kua dej thiab cov diaphragm;
2. Zoo electrochemical stability, nrog lub qhov rais dav electrochemical;
3. High lithium ion conductivity thiab tsis tshua muaj hluav taws xob conductivity;
4. Ntau yam ntawm cov kua dej kub;
5. Nws muaj kev nyab xeeb, tsis muaj tshuaj lom thiab ib puag ncig tus phooj ywg.
(2) Txhim khu kev ruaj ntseg tag nrho ntawm lub cell
Lub roj teeb ntawm tes yog qhov txuas uas sib txuas nrog ntau yam khoom siv ntawm lub roj teeb, thiab kev sib xyaw ntawm cov ncej zoo, cov ncej tsis zoo, diaphragm, lug thiab ntim zaj duab xis.Kev tsim cov qauv ntawm tes tsis tsuas yog cuam tshuam rau kev ua haujlwm ntawm ntau yam ntaub ntawv, tab sis kuj tseem muaj kev cuam tshuam tseem ceeb rau tag nrho cov khoom siv hluav taws xob thiab kev nyab xeeb ntawm lub roj teeb.Kev xaiv cov khoom siv thiab kev tsim cov qauv tseem ceeb tsuas yog ib hom kev sib raug zoo ntawm lub zos thiab tag nrho.Hauv kev tsim cov tub ntxhais, cov qauv tsim nyog yuav tsum tau tsim raws li cov khoom siv yam ntxwv.
Tsis tas li ntawd, qee cov khoom siv tiv thaiv ntxiv tuaj yeem txiav txim siab rau cov qauv roj teeb lithium.Cov txheej txheem tiv thaiv kev tiv thaiv muaj xws li hauv qab no:
a) Qhov hloov pauv tau txais yuav.Thaum qhov kub hauv lub roj teeb nce, nws cov nqi kuj yuav nce raws li.Thaum qhov kub thiab txias siab dhau lawm, lub hwj huam mov yuav raug tso tseg;
b) Teeb lub valve kev nyab xeeb (uas yog, lub qhov cua nyob rau saum lub roj teeb).Thaum lub siab sab hauv ntawm lub roj teeb nce mus rau ib qho nqi, qhov kev nyab xeeb valve yuav qhib tau txais kev ruaj ntseg ntawm lub roj teeb.
Nov yog qee qhov piv txwv ntawm kev tsim kev nyab xeeb ntawm cov qauv hluav taws xob:
1. Qhov zoo thiab qhov tsis zoo ntawm tus ncej muaj peev xwm sib piv thiab tsim qhov loj me hlais
Xaiv qhov muaj peev xwm tsim nyog ntawm qhov zoo thiab tsis zoo electrodes raws li cov yam ntxwv ntawm cov khoom zoo thiab tsis zoo electrode.Qhov sib piv ntawm qhov zoo thiab qhov tsis zoo electrode muaj peev xwm ntawm cov xov tooj ntawm tes yog qhov tseem ceeb txuas nrog rau kev nyab xeeb ntawm lithium ion roj teeb.Yog tias qhov zoo electrode muaj peev xwm loj dhau, cov hlau lithium yuav tso rau ntawm qhov chaw ntawm qhov tsis zoo electrode, thaum lub peev xwm tsis zoo electrode loj dhau, lub peev xwm ntawm lub roj teeb yuav poob zoo heev.Feem ntau, N / P = 1.05-1.15, thiab kev xaiv tsim nyog yuav tsum tau ua raws li lub peev xwm ntawm lub roj teeb thiab kev nyab xeeb.Cov khoom loj thiab me me yuav tsum tau tsim kom qhov chaw ntawm qhov tsis zoo muab tshuaj txhuam (cov khoom muaj txiaj ntsig) nyob rau hauv (ntau tshaj) txoj hauj lwm ntawm qhov zoo muab tshuaj txhuam.Feem ntau, qhov dav yuav tsum yog 1 ~ 5 hli loj dua thiab qhov ntev yuav tsum yog 5 ~ 10 hli loj dua.
2. Kev tso cai rau diaphragm dav
Lub hauv paus ntsiab lus ntawm diaphragm dav tsim yog los tiv thaiv kev luv luv Circuit Court los ntawm kev sib cuag ncaj qha ntawm qhov zoo thiab tsis zoo electrodes.Raws li lub thermal shrinkage ntawm lub diaphragm ua rau deformation ntawm lub diaphragm nyob rau hauv qhov ntev thiab dav kev taw qhia thaum lub sij hawm roj teeb them thiab tawm thiab nyob rau hauv thermal shock thiab lwm yam ib puag ncig, lub polarization ntawm lub folded cheeb tsam ntawm lub diaphragm nce vim qhov nce ntawm qhov kev ncua deb ntawm qhov zoo. thiab tsis zoo electrodes;Qhov ua tau ntawm micro luv luv Circuit Court nyob rau hauv cheeb tsam stretching ntawm lub diaphragm yog nce vim lub thinning ntawm lub diaphragm;Shrinkage ntawm ntug ntawm lub diaphragm tuaj yeem ua rau muaj kev sib cuag ncaj qha ntawm qhov zoo thiab qhov tsis zoo ntawm cov electrodes thiab sab hauv luv luv Circuit Court, uas yuav ua rau muaj kev phom sij vim thermal runaway ntawm lub roj teeb.Yog li ntawd, thaum tsim lub roj teeb, nws cov yam ntxwv shrinkage yuav tsum raug coj mus rau hauv tus account hauv kev siv thaj chaw thiab qhov dav ntawm lub diaphragm.Cov yeeb yaj kiab cais yuav tsum loj dua li cov anode thiab cathode.Ntxiv nrog rau cov txheej txheem yuam kev, cov yeeb yaj kiab cais yuav tsum muaj tsawg kawg yog 0.1mm ntev dua li sab nraud ntawm cov khoom electrode.
3.Insulation kev kho mob
Internal luv Circuit Court yog ib qho tseem ceeb nyob rau hauv lub peev xwm kev nyab xeeb ntawm lithium-ion roj teeb.Muaj ntau qhov chaw txaus ntshai uas ua rau muaj kev cuam tshuam luv luv hauv kev tsim qauv ntawm tes.Yog li ntawd, kev ntsuas tsim nyog lossis kev rwb thaiv tsev yuav tsum tau teeb tsa ntawm cov haujlwm tseem ceeb no txhawm rau tiv thaiv kev luv luv hauv lub roj teeb nyob rau hauv cov xwm txheej txawv txav, xws li kev tswj xyuas qhov sib txawv ntawm qhov zoo thiab qhov tsis zoo electrode pob ntseg;Insulating daim kab xev yuav tsum tau muab tso rau ntawm qhov chaw tsis muab tshuaj txhuam nyob rau hauv nruab nrab ntawm ib qho kawg, thiab tag nrho cov khoom raug yuav tsum tau npog;Insulating daim kab xev yuav tsum tau muab tso rau ntawm qhov zoo aluminium ntawv ci thiab cov khoom tsis zoo;Vuam ib feem ntawm lub lug yuav tsum tau them tag nrho nrog insulating daim kab xev;Insulating daim kab xev yog siv rau sab saum toj ntawm lub tshuab hluav taws xob.
4.Setting kev ruaj ntseg valve (lub siab nyem nyem)
Cov roj teeb lithium ion yog qhov txaus ntshai, feem ntau vim tias qhov kub thiab txias sab hauv yog siab dhau lossis siab dhau los ua rau tawg thiab hluav taws kub;Lub tshuab ua kom lub siab tsim nyog tuaj yeem tso tawm lub siab thiab kub hauv lub roj teeb sai sai thaum muaj kev phom sij, thiab txo qhov kev pheej hmoo tawg.Lub twj tso kua mis tsim nyog yuav tsum tsis yog tsuas yog ua tau raws li lub siab ntawm lub roj teeb thaum lub sijhawm ua haujlwm ib txwm, tab sis kuj tseem qhib kom tso tawm lub siab thaum lub siab sab hauv mus txog qhov txaus ntshai.Qhov chaw teeb tsa ntawm cov cuab yeej siv lub siab yuav tsum tau tsim los txiav txim siab qhov deformation yam ntxwv ntawm lub plhaub roj teeb vim qhov nce ntawm lub siab sab hauv;Tus tsim ntawm kev ruaj ntseg valve tuaj yeem pom tau los ntawm flakes, npoo, seams thiab nicks.
(3) Txhim kho qib txheej txheem
Kev siv zog yuav tsum tau ua kom tus qauv tsim thiab tsim cov txheej txheem tsim khoom ntawm tes.Nyob rau hauv cov kauj ruam ntawm kev sib tov, txheej, ci, compaction, slitting thiab winding, tsim standardization (xws li diaphragm dav, electrolyte txhaj ntim, thiab lwm yam), txhim kho txheej txheem txhais tau tias (xws li tsis tshua muaj siab txhaj tshuaj, centrifugal packing txoj kev, thiab lwm yam.) , ua haujlwm zoo hauv kev tswj cov txheej txheem, xyuas kom cov txheej txheem zoo, thiab nqaim qhov sib txawv ntawm cov khoom;Teem caij ua haujlwm tshwj xeeb hauv cov kauj ruam tseem ceeb uas cuam tshuam rau kev nyab xeeb (xws li deburring ntawm electrode piece, hmoov cheb, sib txawv vuam txoj kev rau cov khoom sib txawv, thiab lwm yam), ua raws li cov qauv kev soj ntsuam zoo, tshem tawm cov khoom puas, thiab tshem tawm cov khoom puas (xws li deformation ntawm electrode daim, diaphragm puncture, active khoom ntog tawm, electrolyte to, thiab lwm yam);Khaws qhov chaw tsim khoom kom huv si thiab huv si, siv 5S kev tswj hwm thiab 6-sigma kev tswj kom zoo, tiv thaiv impurities thiab noo noo los ntawm kev sib xyaw hauv kev tsim khoom, thiab txo qhov cuam tshuam ntawm kev sib tsoo hauv kev tsim khoom ntawm kev nyab xeeb.
Post lub sij hawm: Nov-16-2022