1. Kev pheej hmoo ntawm lithium ion roj teeb
Lithium ion roj teeb yog ib qho khoom siv hluav taws xob uas muaj peev xwm txaus ntshai vim nws cov yam ntxwv ntawm cov tshuaj lom neeg thiab cov kab ke.
(1) Cov tshuaj lom neeg ua haujlwm siab
Lithium yog cov ntsiab lus tseem ceeb ntawm pawg I hauv lub sijhawm thib ob ntawm lub sijhawm teem sijhawm, nrog rau cov khoom siv tshuaj lom neeg heev.
(2) High zog ceev
Cov roj teeb lithium ion muaj lub zog tshwj xeeb heev (≥ 140 Wh / kg), uas yog ob peb zaug ntawm nickel cadmium, nickel hydrogen thiab lwm cov roj teeb theem nrab.Yog tias cov tshuaj tiv thaiv thermal runaway tshwm sim, qhov kub siab yuav raug tso tawm, uas yuav yooj yim ua rau tus cwj pwm tsis zoo.
(3) Txais cov organic electrolyte system
Cov kuab tshuaj organic ntawm cov organic electrolyte system yog hydrocarbon, uas tsis muaj decomposition voltage, yooj yim oxidation thiab flammable hnyav;Nyob rau hauv cov ntaub ntawv ntawm to, lub roj teeb yuav ntes hluav taws, txawm hlawv thiab tawg.
(4) Muaj feem ntau ntawm cov kev mob tshwm sim
Hauv kev siv cov txheej txheem ntawm lithium ion roj teeb, cov tshuaj muaj txiaj ntsig zoo ntawm kev sib hloov pauv ntawm cov hluav taws xob hluav taws xob thiab cov tshuaj siv hluav taws xob siv qhov chaw hauv nws sab hauv.Txawm li cas los xij, nyob rau hauv qee qhov xwm txheej, xws li overcharging, tshaj tawm lossis dhau kev ua haujlwm tam sim no, nws yooj yim ua rau muaj tshuaj lom neeg sab hauv lub roj teeb;Thaum cov tshuaj tiv thaiv sab nraud hnyav dua, nws yuav ua rau muaj kev cuam tshuam loj rau kev ua haujlwm thiab kev pabcuam lub neej ntawm lub roj teeb, thiab tuaj yeem tsim cov roj ntau, uas yuav ua rau tawg thiab hluav taws kub tom qab lub siab hauv lub roj teeb nce sai, ua rau muaj teeb meem kev nyab xeeb.
(5) Cov qauv ntawm cov khoom siv electrode tsis ruaj khov
Cov tshuaj tiv thaiv overcharge ntawm lithium ion roj teeb yuav hloov cov qauv ntawm cov khoom siv cathode thiab ua rau cov khoom muaj zog oxidation, yog li cov kuab tshuaj hauv cov electrolyte yuav muaj zog oxidation;Thiab cov nyhuv no yog irreversible.Yog hais tias lub tshav kub tshwm sim los ntawm cov tshuaj tiv thaiv accumulates, yuav muaj kev pheej hmoo ua rau thermal runaway.
2. Kev tshuaj xyuas cov teeb meem kev nyab xeeb ntawm cov khoom siv roj teeb lithium ion
Tom qab 30 xyoo ntawm kev tsim kho kev lag luam, cov khoom siv roj teeb lithium-ion tau ua tiav zoo hauv kev siv thev naus laus zis kev nyab xeeb, tswj tau qhov tshwm sim ntawm kev cuam tshuam sab hauv lub roj teeb, thiab ua kom muaj kev nyab xeeb ntawm lub roj teeb.Txawm li cas los xij, raws li Lithium ion roj teeb tau siv ntau dua thiab ntau qhov xwm txheej yog siab dua thiab cov khoom lag luam rov qab vim muaj kev phom sij rau kev nyab xeeb rau xyoo tsis ntev los no.Peb xaus tias cov laj thawj tseem ceeb rau teeb meem kev nyab xeeb ntawm cov khoom siv roj teeb lithium-ion yog raws li hauv qab no:
(1) Cov khoom siv tseem ceeb teeb meem
Cov ntaub ntawv siv rau cov tub ntxhais hluav taws xob muaj xws li cov khoom siv zoo, cov khoom siv tsis zoo, cov diaphragms, electrolytes thiab shells, thiab lwm yam. Kev xaiv ntawm cov khoom siv thiab kev sib txuam ntawm cov txheej txheem muaj pes tsawg leeg txiav txim siab qhov kev nyab xeeb ntawm cov tub ntxhais hluav taws xob.Thaum xaiv cov khoom siv zoo thiab tsis zoo thiab cov khoom siv diaphragm, cov chaw tsim khoom tsis tau ua qee qhov kev ntsuam xyuas ntawm cov yam ntxwv thiab kev sib txuam ntawm cov khoom siv raw, uas ua rau muaj kev tsis txaus ntseeg hauv kev nyab xeeb ntawm tes.
(2) Cov txheej txheem tsim khoom teeb meem
Cov ntaub ntawv raw ntawm tes tsis raug kuaj nruj, thiab qhov chaw tsim khoom tsis zoo, ua rau impurities hauv kev tsim khoom, uas tsis yog tsuas yog tsim kev puas tsuaj rau lub peev xwm ntawm lub roj teeb, tab sis kuj muaj kev cuam tshuam zoo rau kev nyab xeeb ntawm lub roj teeb;Tsis tas li ntawd, yog tias cov dej sib xyaw hauv cov electrolyte ntau dhau, cov kev cuam tshuam sab nraud tuaj yeem tshwm sim thiab ua kom lub zog sab hauv ntawm lub roj teeb, uas yuav cuam tshuam rau kev nyab xeeb;Vim qhov kev txwv ntawm cov txheej txheem ntau lawm, thaum lub sij hawm tsim cov khoom siv hluav taws xob, cov khoom lag luam tsis tuaj yeem ua tau zoo sib xws, xws li qhov tsis zoo ntawm cov electrode matrix, poob tawm ntawm cov khoom siv hluav taws xob, kev sib xyaw ntawm lwm yam impurities hauv cov khoom siv ua haujlwm, qhov tsis muaj kev ruaj ntseg vuam ntawm lub electrode lug, qhov tsis ruaj tsis khov vuam kub, cov burrs ntawm ntug ntawm cov electrode daim, thiab tsis siv cov insulating daim kab xev nyob rau hauv cov ntsiab lus tseem ceeb, uas tej zaum yuav adversely cuam tshuam rau kev ruaj ntseg ntawm hluav taws xob tub ntxhais. .
(3) Cov qauv tsim tsis xws luag ntawm cov tub ntxhais hluav taws xob txo qhov kev nyab xeeb kev ua haujlwm
Hais txog kev tsim qauv, ntau lub ntsiab lus tseem ceeb uas muaj kev cuam tshuam rau kev nyab xeeb tsis tau txais kev saib xyuas los ntawm cov chaw tsim khoom.Piv txwv li, tsis muaj insulating daim kab xev ntawm qhov tseem ceeb, tsis muaj cov npoo los yog cov npoo tsis txaus tshuav nyob rau hauv lub diaphragm tsim, qhov tsim ntawm lub peev xwm piv ntawm qhov zoo thiab tsis zoo electrodes yog tsis tsim nyog, tus tsim ntawm cheeb tsam piv ntawm zoo thiab tsis zoo active ingredient. Cov khoom siv tsis tsim nyog, thiab qhov tsim ntawm lub log ntev yog qhov tsis tsim nyog, uas tuaj yeem ua rau muaj kev phom sij rau kev nyab xeeb ntawm lub roj teeb.Tsis tas li ntawd, nyob rau hauv cov txheej txheem ntawm cov khoom siv ntawm tes, qee cov tuam txhab ntawm tes sim txuag thiab ntim cov ntaub ntawv raw kom txuag tau cov nqi thiab txhim kho kev ua haujlwm, xws li txo qhov chaw ntawm lub diaphragm, txo cov ntawv ci tooj liab, aluminium ntawv ci, thiab tsis siv cov siab nyem valve los yog insulating daim kab xev, uas yuav txo tau kev ruaj ntseg ntawm lub roj teeb.
(4) Lub zog ceev heev
Tam sim no, kev ua lag luam tab tom nrhiav cov khoom siv roj teeb uas muaj peev xwm ntau dua.Txhawm rau ua kom muaj kev sib tw ntawm cov khoom lag luam, cov tuam ntxhab txuas ntxiv txhim kho lub ntim tshwj xeeb lub zog ntawm lithium ion roj teeb, uas ua rau muaj kev pheej hmoo ntawm cov roj teeb zoo heev.
Post lub sij hawm: Nov-06-2022