Vim li cas cov nominal voltage ntawm lithium-ion roj teeb hlwb 3.7V?

Thaum peb disassemble roj teeb los ntawm cov smartphones, hluav taws xob txhab nyiaj, lossis cov tsheb hluav taws xob, peb ib txwm ntsib cov khoom lag luam zoo tshaj plaws "3.7v" nominal voltage cim. Tus xov tooj no zoo li yog "cov lej keeb kwm" ntawm cov roj teeb lithium-ion hauv ib xyoo pua-ntev selplay ntawm cov ntaub ntawv txuj ci, thiab kev coj ua. Kab lus no yuav unravel ntawm 3.7v voltage los ntawm rau qhov ntev hauv cov lus yooj yim.

I. Atomic World "Zog Ntaiv": Qhov Twg Qhov Volfage los ntawm?

Qhov hluav taws xob ntawm cov roj av hluav taws xob ntawm cov roj av los ntawm cov khoom siv liab liab tshwm sim ntawm kev ua haujlwm cathode thiab anode cov khoom siv thaum them thiab rho tawm. Siv cov roj lithium ntau tshaj lithium cobalt oxide (Licoo₂) Cathode thiab Graphite Anode raws li ib qho piv txwv:

• Thaum them se: lithium ions (lith) "khiav tawm ntawm daim ntawv tso cai ua kom muaj kev sib cuam tshuam nrog cov txheej txheem hluav taws xob. Tus txheej txheem no yog akin mus nqa ib qho khoom hnyav rau qhov siab, xav tau lub zog siv hluav taws xob (hloov hluav taws xob ua hluav taws xob).
• Thaum lub sijhawm rho tawm: Lithium ionsthium ions "swb rov qab" los ntawm cov khaubncaws sab nraud povtseg rau cov latoo₂ crystal lattice. Zoo li ib qho khoom hnyav uas poob los ntawm qhov siab thiab tso hluav taws xob (siv hluav taws xob siv hluav taws xob).

Lub zog hluav taws xob no ntawm "nqa" thiab "poob" manifests lub cev raws li voltage. Quantum tshuaj lom neeg cov tshuaj suav ua tau hais tias Lithium ion Extraction muaj peev xwm txog 4.1V (kev sib txuas lus lithium ion yog ze rau 0. 1V. Tom qab txiav tawm lub zog poob zog thaum lub sij hawm them thiab rho tawm (polarization cuam tshuam), qhov siv tau siv hluav taws xob (polarization tseeb), {}}. 2V ntau yam.

Ii. "Golden piv" ntawm cov khoom sib xyaw ua ke: Vim li cas xaiv 3.7v?

Cov kws tshawb fawb tau sim nrog ntau pua cov khoom siv sib xyaw ua ke, tab sis tus 3.7v system sawv tawm vim tias nws ntaus sib npaug hauv qhov sib npaug, kev nyab xeeb, thiab tus nqi:

Cov Licoo₂ + Graphite sib xyaw ua ke yog zoo li ib tug "hexagonal yog kim, nws ruaj khov lithffented zoo li limnaus ua rau" commusion "li nca. Lub 3.7v voltage platform maximizes zog tawm thaum tsis txhob poob ntau dhau ntawm polarization poob.

III. "Kab vam khom" Xaiv keeb kwm: Teeb los ntawm cov khoom siv hluav taws xob

Qhov txheej txheem ntawm 3.7v voltage yog qhov tseem ceeb rov qab puab ntawm lub hwj huam muab cov khoom siv los ntawm cov neeg siv khoom siv hluav taws xob. Thawj-tiam iPhone nyob rau xyoo 2007 tau txais yuav lub roj teeb lithium cobalves nrog ib tug qauv hluav taws xob ntawm 3.7v, uas tau los ua tus qauv rau cov qauv tsim smartphone. Qhov kev hloov kho no coj peb qhov txiaj ntsig loj:

1, Yooj Yim Tsiv Kev Tswj: Lub USB interface 5V tus qauv tuaj yeem raug txo rau 4.2V them cov hluav taws xob txiav tawm los ntawm kev txhawb nqa yooj yim, tshem tawm cov kev xav tau rau cov kev xav tau.

2, kev tiv thaiv kev tiv thaiv Circuit: 3. {{} V tawm volgage muab cov roj teeb hluav taws xob (BMS), tiv thaiv kev tawm tsam thiab tooj liab kev loj hlob.

3, ntau-cell series optimization: ob 3.7v hlwb hauv series tuaj yeem ncav cuag 7.4v, haum rau hights uas tsis muaj peev xwm ntxiv cov peev xwm ntxiv.

Cov qauv tsim no Inertia tseem niaj hnub no. Txawm nyob rau hauv lub tsheb fais teb teb, roj teeb ntim tau ntawm ntau pua ntawm 3.7v hlwb los ntawm cov txheej txheem keeb kwm tseem nqa mus rau pem hauv ntej cov keeb kwm keeb kwm. TESLA QAUV SOJ POJ POJ THAWV Ntim muaj 7, {{{}}}} cells (txhua 3.7v), nrog tag nrho Voltage ncav tau 400v.

IV. "Kev Siv Zej Zog" ntawm cov hluav taws xob hluav taws xob: kev pom los ntawm kev xaiv cov kab sib dhos

Kev ntsuas tiag tiag ntawm cov roj teeb lithium-ion-otion qhia tau tias 3.7v tsis yog tus nqi tsis tu ncua tab sis muaj nuj nqi ntawm lub xeev tus nqi (soc). Noj ib tus nyiam NCM523 \/ Graphite System ua piv txwv:

• Thaum lub sijhawm them: Qhov hluav taws xob nrawm nrawm los ntawm 3. {V rau 3.7% Software), tom qab ntawd nkag mus rau ib qho hluav taws xob txuas ntxiv ntawm 4.2V.
• Thaum kev tso tawm: Qhov hluav taws xob maj mam txo qis los ntawm 4.2V rau 3.7v (txog 70% SOC), ua raws los ntawm kev ntxhab voltage poob nkhaus.

Raws li cov khoom siv nyiaj ntxiv ntawm kev them nyiaj-our, 3.7v sib raug rau qhov tseem ceeb ntawm Lithium ion diffusion tus nqi. Txij ntawm no, cov chaw nquag hauv cov khoom siv hluav taws xob tsis muaj peev xwm ua kom muaj ntau dhau lithium-depleted, kev khiav hauj lwm nyob rau hauv ib lub xeev zoo. Zoo li "PACE" thaum khiav tawm, dhau nrawm nrawm dhau, thiab 3.7v yog qhov tseeb ntawm "chaw qab zib" rau kev siv hluav taws xob hloov kho tau zoo.

V. "Kev Txiav Txim Siab Tiag" ntawm kev coj ua: kev ua si ntawm tus nqi thiab cov txheej txheem

Kev tsim ntawm 3.7v voltage tseem muaj txiaj ntsig zoo los ntawm kev tsim khoom lag luam thiab cov nqi:

Separator thiab electrolyte yoog kom muaj kev sib cais rau cov kev sib cais ua kom zoo nkauj thiab cov hluav taws xob ntau dua vim yog cov hluav taws xob tsis txaus.

Electrode txheej txheej txheem: Qhov me me faib cov roj ntsha lithium cobalt tau ua tiav nyob rau lub sijhawm, ua ib qho kev ua kom zoo nrog 3.7v system. Yuam kev nce qib hluav taws xob yuav xav tau cov kab ntau lawm.

Khoom Siv Txuas Loj Hlob: Tom qab ob xyoo xyoo ntawm kev txhim kho, cov khoom siv tau txais txiaj ntsig zoo, ua tiav cov khoom tiav tiav los ntawm cov khoom siv roj teeb tawm los ntawm cov roj teeb rov ua dua tshiab. Txhua qhov kev hloov pauv hauv cov hluav taws xob hluav taws xob yuav ua rau cov khoom lag luam tseem ceeb.

VI. Yav Tom Ntej: Qhov "Qub thiab Kev Ncaj Ncees thiab 3.7v

Txawm hais tias dominating lub lag luam rau ntau dua ob xyoo lawm, thev naus laus zis yog muab nce rau cov paradage tshiab:

High-voltage cov khoom siv: los ntawm nce cov ntsiab lus ntawm no (piv txwv li cov ntaub ntawv txiav tawm ntawm cov lus qhia saum toj no. {{8} v.

Silicon-carbon composite anodes: sib xyaw ua ke rau hauv graphite tuaj yeem txo qhov kev tawm dag zog mus rau hauv qab no {2}}.

SCORT-TSAV MEDMORYTE thev naus laus zis: Ua Haujlwm Sulfide lossis Oxide cov kev txwv ntawm electrolytes, ua kom muaj 5v-chav-voltage Systems.

Cov kev hloov thev naus laus zis yuav rov qab siv roj teeb lithium-ion, tab sis raws li lub neej yav dhau los thiab yav tom ntej, 3.7v yuav txuas ntxiv mus ua lub luag haujlwm tseem ceeb hauv qhov tseem ceeb hauv lub sijhawm yav tom ntej. Zoo li lub sijhawm hloov pauv ntawm cov tsheb sib txuas sab hauv cov tsheb cav rau hluav taws xob, lub tshuab hluav taws xob yuav pab ua "lub cav hloov pauv" ntawm lub zog tshiab hloov tshiab.

Xaus: Lub tswv yim thev naus laus zis tom qab 3.7v

Los ntawm lub tshuab raj ntawm lub tshuab raj ntawm quantum ntsuas rau macroscopic ntawm hluav taws xob tsheb encapsulates tib neeg nkag siab txog kev hloov pauv hluav taws xob. Nws tsis yog tsuas yog kev sib tshuam ntawm cov ntaub ntawv kev tshawb fawb, electrochemical kev tshawb fawb, thiab kev ua lag luam engineering tab sis kuj yog quintessential kev hloov kho kev hloov kho kev hloov zuj zus ntawm kev ua haujlwm thev naus laus zis. Thaum peb txaus siab rau qhov yooj yim ntawm lub neej wireless nrog cov khoom siv txawb nrog kev siv dag zog ntawm cov neeg ua haujlwm tsis suav thiab muaj txiaj ntsig zoo hauv cov hluav taws xob. Raws li qhov tshiab lub zog hloov kho cov kev hloov kho, tab sis cov ntsuas hluav taws xob nws tau tsim dua tshiab yuav txuas ntxiv coj cov kev coj ua yav tom ntej ntawm lub zog cia thev naus laus zis.