Kev Taw Qhia:
Txij li thaum nkag mus rau hauv kev lag luam,roj teeb lithiumtau siv dav rau lawv cov txiaj ntsig xws li lub neej ntev, muaj peev xwm tshwj xeeb loj, thiab tsis muaj qhov cuam tshuam nco. Thaum siv rau qhov kub qis, cov roj teeb lithium-ion muaj teeb meem xws li muaj peev xwm qis, attenuation hnyav, kev ua haujlwm tsis zoo, pom tseeb lithium nag lossis daus, thiab tsis sib npaug lithium ntxig thiab rho tawm. Txawm li cas los xij, thaum daim ntawv thov txuas ntxiv nthuav dav, cov kev txwv uas coj los ntawm kev ua haujlwm tsis zoo ntawm qhov kub qis ntawm cov roj teeb lithium-ion tau dhau los ua qhov pom tseeb ntau dua. Cia peb tshawb nrhiav cov laj thawj thiab piav qhia yuav ua li cas kho cov roj teeb lithium kom raug thaum lub caij ntuj no?
Kev sib tham txog cov yam tseem ceeb uas cuam tshuam rau kev ua haujlwm kub qis ntawm cov roj teeb lithium
1. Kev cuam tshuam ntawm cov electrolyte
Cov electrolyte muaj qhov cuam tshuam loj tshaj plaws rau kev ua haujlwm kub qis ntawmroj teeb lithiumCov khoom sib xyaw thiab cov khoom siv physicochemical ntawm cov electrolyte muaj feem cuam tshuam tseem ceeb rau kev ua haujlwm kub qis ntawm lub roj teeb. Qhov teeb meem uas lub voj voog roj teeb ntsib ntawm qhov kub qis yog tias qhov viscosity ntawm electrolyte yuav nce ntxiv, qhov ceev ntawm ion conduction yuav qeeb, ua rau muaj kev tsis sib xws hauv qhov ceev ntawm electron migration ntawm lub voj voog sab nraud, yog li lub roj teeb yuav raug polarized hnyav thiab lub peev xwm them thiab tso tawm yuav poob qis. Tshwj xeeb tshaj yog thaum them ntawm qhov kub qis, lithium ions tuaj yeem yooj yim tsim lithium dendrites ntawm qhov chaw ntawm lub electrode tsis zoo, ua rau lub roj teeb tsis ua haujlwm.
2. Kev cuam tshuam ntawm cov khoom siv electrode tsis zoo
- Lub roj teeb polarization yog qhov loj heev thaum lub sijhawm them thiab tso tawm ntawm qhov kub qis, thiab muaj ntau cov hlau lithium tso rau ntawm qhov chaw ntawm lub electrode tsis zoo. Cov khoom tshuaj tiv thaiv ntawm cov hlau lithium thiab electrolyte feem ntau tsis yog conductive;
- Los ntawm qhov pom ntawm thermodynamic, cov electrolyte muaj ntau pawg polar xws li CO thiab CN, uas tuaj yeem cuam tshuam nrog cov khoom siv electrode tsis zoo, thiab zaj duab xis SEI tsim tau yooj yim dua rau qhov kub qis;
- Nws nyuaj rau cov pa roj carbon negative electrodes kom muab lithium tso rau hauv qhov kub qis, thiab muaj qhov tsis sib xws hauv kev them thiab tso tawm.
Yuav ua li cas kho cov roj teeb lithium kom raug thaum lub caij ntuj no?
1. Tsis txhob siv cov roj teeb lithium hauv qhov chaw kub qis
Kub muaj feem cuam tshuam loj heev rau cov roj teeb lithium. Qhov kub qis dua, qhov ua haujlwm ntawm cov roj teeb lithium qis dua, uas ua rau kev them thiab tso tawm haujlwm txo qis. Feem ntau hais lus, qhov kub ua haujlwm ntawmroj teeb lithiumyog nruab nrab ntawm -20 degrees thiab 60 degrees.
Thaum qhov kub qis dua 0 ℃, ceev faj tsis txhob them sab nraum zoov. Koj tsis tuaj yeem them nws txawm tias koj them nws. Peb tuaj yeem coj lub roj teeb hauv tsev mus them (nco ntsoov, nco ntsoov nyob deb ntawm cov khoom siv hluav taws xob !!!). Thaum qhov kub qis dua -20 ℃, lub roj teeb yuav nkag mus rau hauv lub xeev pw tsaug zog thiab tsis tuaj yeem siv tau li qub. Yog li cov neeg siv nyob rau sab qaum teb txias heev.
Yog tias tsis muaj qhov xwm txheej them hluav taws xob sab hauv tsev, siv tag nrho cov cua sov seem thaum lub roj teeb raug tso tawm, thiab them nws hauv lub hnub tam sim ntawd tom qab nres tsheb kom nce qhov them thiab zam kom tsis txhob muaj lithium nag.
2. Tsim kom muaj tus cwj pwm them thaum koj siv nws
Thaum lub caij ntuj no, thaum lub roj teeb tsis muaj zog txaus, peb yuav tsum tau them nws raws sijhawm thiab tsim kom muaj tus cwj pwm zoo ntawm kev them thaum koj siv nws. Nco ntsoov, tsis txhob kwv yees lub zog roj teeb thaum lub caij ntuj no raws li lub neej roj teeb ib txwm muaj.
Thaum lub caij ntuj no, kev ua ub no ntawmroj teeb lithiumtxo qis, uas tuaj yeem ua rau muaj kev tso tawm ntau dhau thiab them ntau dhau, uas yuav cuam tshuam rau lub roj teeb lub neej lossis ua rau muaj kev sib tsoo hluav taws xob. Yog li ntawd, thaum lub caij ntuj no, koj yuav tsum tau them sai sai rau kev them nqi hauv txoj kev tso tawm tsawg thiab them tsawg. Tshwj xeeb, tsis txhob nres lub tsheb ntev thaum them kom tsis txhob them ntau dhau.
3. Tsis txhob nyob deb thaum them. Nco ntsoov tsis txhob them ntev.
Tsis txhob them lub tsheb ntev ntev kom yooj yim. Tsuas yog rho nws tawm thaum nws them tag. Qhov chaw them thaum lub caij ntuj no yuav tsum tsis txhob qis dua 0 ℃. Thaum them, tsis txhob tawm deb dhau kom tiv thaiv kev kub ntxhov thiab daws lawv raws sijhawm.
4. Siv lub charger tshwj xeeb rau cov roj teeb lithium thaum them.
Lub khw muaj ntau lub charger tsis zoo. Kev siv cov charger tsis zoo yuav ua rau lub roj teeb puas tsuaj thiab ua rau hluav taws kub. Tsis txhob yuav cov khoom pheej yig thiab tsis muaj kev ruaj ntseg rau qhov pheej yig, tsis txhob hais txog kev siv cov roj teeb lead-acid; yog tias koj lub charger siv tsis tau li qub, tsum tsis txhob siv nws tam sim ntawd, thiab tsis txhob poob daim duab loj rau qhov me me.
5. Ua tib zoo saib lub roj teeb lub neej thiab hloov nws raws sijhawm
Cov roj teeb lithiummuaj lub neej ntev. Cov lus qhia tshwj xeeb thiab cov qauv sib txawv muaj lub neej ntev sib txawv. Tsis tas li ntawd, vim yog siv tsis raug txhua hnub, lub roj teeb lub neej ntev li ob peb lub hlis mus txog peb xyoos. Yog tias lub tsheb poob hluav taws xob lossis lub roj teeb lub neej luv luv, thov hu rau cov neeg ua haujlwm txij nkawm roj teeb lithium raws sijhawm kom daws nws.
6. Tso qee lub zog rau lub caij ntuj no
Yuav kom siv tau lub tsheb li qub thaum lub caij nplooj ntoo hlav xyoo tom ntej, yog tias lub roj teeb tsis siv ntev, nco ntsoov them nws mus txog 50% -80%, tshem nws tawm ntawm lub tsheb mus khaws cia, thiab them nws tsis tu ncua, kwv yees li ib hlis ib zaug. Lus Cim: Lub roj teeb yuav tsum khaws cia rau hauv qhov chaw qhuav.
7. Muab lub roj teeb tso rau hauv kom raug
Tsis txhob muab lub roj teeb tso rau hauv dej lossis ua kom ntub; tsis txhob muab lub roj teeb sib tshooj ntau tshaj 7 txheej, lossis tig lub roj teeb rov qab.
Xaus lus
Thaum kub txog -20 ℃, lub peev xwm tso tawm ntawm cov roj teeb lithium-ion tsuas yog li 31.5% ntawm qhov ntawd thaum sov li chav tsev. Qhov kub ua haujlwm ntawm cov roj teeb lithium-ion ib txwm muaj yog nruab nrab ntawm -20 thiab +55 ℃. Txawm li cas los xij, hauv kev lag luam aerospace, kev lag luam tub rog, tsheb fais fab, thiab lwm yam, cov roj teeb yuav tsum ua haujlwm ib txwm ntawm -40 ℃. Yog li ntawd, kev txhim kho cov khoom kub qis ntawm cov roj teeb lithium-ion yog qhov tseem ceeb heev. Tau kawg, qhov kub thiab txiasroj teeb lithiumkev lag luam niaj hnub txhim kho, thiab cov kws tshawb fawb txuas ntxiv kawm txog cov roj teeb lithium uas siv tau rau qhov kub qis los daws teeb meem rau cov neeg siv khoom.
Heltec Energy yog koj tus khub koom tes hauv kev tsim cov roj teeb. Nrog peb txoj kev tsom mus rau kev tshawb fawb thiab kev txhim kho, ua ke nrog peb cov khoom siv roj teeb ntau yam, peb muab cov kev daws teeb meem ib zaug xwb kom tau raws li qhov xav tau ntawm kev lag luam. Peb txoj kev cog lus rau kev ua tau zoo tshaj plaws, cov kev daws teeb meem tshwj xeeb, thiab kev koom tes zoo nrog cov neeg siv khoom ua rau peb yog qhov kev xaiv zoo tshaj plaws rau cov chaw tsim khoom thiab cov neeg muag khoom thoob ntiaj teb.
Yog tias koj muaj lus nug lossis xav paub ntxiv, thov tsis txhob yig tiv tauj pebncav tes rau peb.
Kev Thov Kom Tau Txais Nqe Lus:
Jacqueline:jacqueline@heltec-energy.com/ +86 185 8375 6538
Qab zib:sucre@heltec-bms.com/ +86 136 8844 2313
Nancy:nancy@heltec-energy.com/ +86 184 8223 7713
Lub sijhawm tshaj tawm: Lub Kaum Hli-09-2024