Txheej txheem cej luam ntawm txoj kev loj hlob ntawm Lithium roj teeb electrolyte,
lithium roj teeb,

▍ Daim ntawv pov thawj CB yog dab tsi?

IECEE CB yog thawj txoj hauv kev thoob ntiaj teb rau kev sib koom ua ke ntawm cov khoom siv hluav taws xob kev nyab xeeb kev xeem ntawv ceeb toom. NCB (National Certification Body) ncav cuag ntau qhov kev pom zoo, uas ua rau cov tuam txhab tau txais daim ntawv pov thawj hauv tebchaws los ntawm lwm lub teb chaws cov tswv cuab raws li CB cov tswv yim raws li kev hloov pauv ib qho ntawm NCB daim ntawv pov thawj.

CB daim ntawv pov thawj yog ib daim ntawv pov thawj CB raws li daim ntawv tso cai NCB, uas yog qhia rau lwm tus NCB tias cov khoom kuaj kuaj ua raws li cov qauv yuav tsum tau ua.

Raws li hom ntawv tshaj tawm, CB daim ntawv tshaj tawm teev cov kev xav tau los ntawm IEC tus qauv khoom los ntawm cov khoom. CB daim ntawv tshaj tawm tsis yog tsuas yog muab cov txiaj ntsig ntawm txhua qhov kev ntsuas uas xav tau, ntsuas, tshawb xyuas, tshuaj xyuas thiab kev ntsuas nrog qhov tseeb thiab tsis meej, tab sis kuj suav nrog cov duab, daim duab kos duab, duab thiab cov lus piav qhia ntawm cov khoom. Raws li txoj cai ntawm CB scheme, CB daim ntawv tshaj tawm yuav tsis siv mus txog thaum nws nthuav tawm nrog CB daim ntawv pov thawj ua ke.

▍ Vim li cas peb thiaj xav tau CB Certification?

1. Ncaj nraimlylees paubzej or pom zooedlos ntawmtus tswv cuablub teb chaws

Nrog CB daim ntawv pov thawj thiab CB xeem daim ntawv tshaj tawm, koj cov khoom tuaj yeem raug xa tawm mus rau qee lub tebchaws ncaj qha.

1. Hloov mus rau lwm lub tebchaws daim ntawv pov thawj

Daim ntawv pov thawj CB tuaj yeem hloov pauv ncaj qha mus rau daim ntawv pov thawj ntawm nws cov tswvcuab hauv tebchaws, los ntawm kev muab CB daim ntawv pov thawj, daim ntawv pov thawj kev xeem thiab cov ntawv xeem sib txawv (thaum muaj feem xyuam) yam tsis tau rov ua dua qhov kev xeem, uas tuaj yeem txo lub sijhawm ua haujlwm ntawm kev lees paub.

1. Xyuas kom muaj kev nyab xeeb ntawm cov khoom

CB daim ntawv pov thawj kuaj xyuas cov khoom siv tsim nyog thiab pom tau tias muaj kev nyab xeeb thaum siv tsis raug. Cov khoom muaj ntawv pov thawj ua pov thawj qhov txaus siab ntawm qhov yuav tsum tau muaj kev nyab xeeb.

▍ Vim li cas MCM?

● Kev Tsim Nyog:MCM yog thawj daim ntawv tso cai CBTL ntawm IEC 62133 tus qauv tsim nyog los ntawm TUV RH hauv Suav teb av loj.

● Daim ntawv pov thawj thiab kev xeem muaj peev xwm:MCM yog thawj thaj chaw ntawm kev sim thiab ntawv pov thawj thib peb rau IEC62133 tus qauv, thiab tau ua tiav ntau tshaj 7000 roj teeb IEC62133 kev sim thiab CB cov ntaub ntawv rau cov neeg siv khoom thoob ntiaj teb.

● Kev pab txhawb nqa:MCM muaj ntau dua 15 tus kws tshaj lij kws tshaj lij tshwj xeeb hauv kev sim raws li IEC 62133 tus qauv. MCM muab cov neeg siv khoom nrog cov lus qhia dav dav, raug, kaw-voj hom kev txhawb nqa thiab cov kev pabcuam cov ntaub ntawv ua ntej.

Nyob rau hauv 1800, tus Italian physicist A. Volta tau tsim lub voltaic pawg, uas tau qhib qhov pib ntawm lub tswv yim roj teeb thiab piav rau thawj lub sij hawm qhov tseem ceeb ntawm electrolyte nyob rau hauv electrochemical zog cia li. Cov electrolyte tuaj yeem pom tau tias yog ib qho hluav taws xob insulating thiab ion-conducting txheej nyob rau hauv daim ntawv ntawm cov kua los yog khoom, ntxig rau ntawm qhov tsis zoo thiab zoo electrodes. Tam sim no, cov khoom siv hluav taws xob zoo tshaj plaws yog tsim los ntawm kev ua kom cov roj lithium ntsev (xws li LiPF6) hauv cov kuab tshuaj organic carbonate uas tsis muaj dej (xws li EC thiab DMC). Raws li cov qauv ntawm tes thiab tsim qauv, cov electrolyte feem ntau suav rau 8% mus rau 15% ntawm qhov hnyav ntawm tes. Dab tsi ntxiv, nws qhov flammability thiab pom kev ua haujlwm kub ntawm -10 ° C txog 60 ° C zoo heev cuam tshuam kev txhim kho ntxiv ntawm roj teeb lub zog ceev thiab kev nyab xeeb. Yog li ntawd, cov txheej txheem tshiab electrolyte raug suav tias yog qhov tseem ceeb rau kev txhim kho cov roj teeb tshiab tiam tom ntej. Cov kws tshawb fawb kuj tseem ua haujlwm los tsim cov tshuab electrolyte sib txawv. Piv txwv li, kev siv cov kuab tshuaj fluorinated uas muaj peev xwm ua tau zoo lithium hlau cycling, organic lossis inorganic khoom electrolytes uas muaj txiaj ntsig zoo rau kev lag luam tsheb thiab "cov roj teeb hauv lub xeev" (SSB). Lub ntsiab yog vim li cas yog hais tias cov khoom electrolyte hloov cov thawj cov kua electrolyte thiab diaphragm, kev nyab xeeb, ib lub zog ceev thiab lub neej ntawm lub roj teeb yuav ua tau zoo dua. Tom ntej no, peb tsuas yog sau cov ntsiab lus ntawm kev tshawb fawb ntawm cov khoom electrolytes nrog cov khoom sib txawv.
Inorganic khoom electrolytes tau siv nyob rau hauv kev lag luam electrochemical zog cia khoom, xws li ib co high-temperature rechargeable roj teeb Na-S, Na-NiCl2 roj teeb thiab thawj Li-I2 roj teeb. Rov qab rau xyoo 2019, Hitachi Zosen (Nyiv) tau nthuav tawm tag nrho cov khoom siv-lub xeev lub hnab roj teeb ntawm 140 mAh los siv rau hauv qhov chaw thiab sim ntawm International Chaw Nres Tsheb (ISS). Lub roj teeb no yog tsim los ntawm sulfide electrolyte thiab lwm yam roj teeb uas tsis tau qhia tawm, tuaj yeem ua haujlwm ntawm -40 ° C thiab 100 ° C. Hauv 2021 lub tuam txhab tab tom qhia lub peev xwm ntau dua cov roj teeb ntawm 1,000 mAh. Hitachi Zosen pom qhov kev xav tau ntawm cov roj teeb khoom siv rau qhov chaw hnyav xws li qhov chaw thiab cov cuab yeej siv ua haujlwm hauv ib puag ncig ib puag ncig. Lub tuam txhab npaj yuav muab ob npaug rau lub roj teeb muaj peev xwm los ntawm 2025. Tab sis txog tam sim no, tsis muaj cov khoom lag luam tawm hauv lub xeev cov roj teeb uas tuaj yeem siv rau hauv tsheb fais fab.