Sau: Dany Huang, Ph.D.
CEO & R&D Leader, TOB New Energy
Txuas nrog Dr. Huang ntawm LinkedIn
Executive Summary & Key Takeaways
Rau loj -muaj peev xwm prismatic thiab lub hnab ntim ntau tshaj 50Ah, Z-folding stacking yog cov txheej txheem tsim khoom zoo tshaj. Nws muab cov kev ua haujlwm qis qis dua thiab siv qhov chaw siv ntau dua piv rau cov txheej txheem winding ib txwm muaj.
- Kev siv qhov chaw:Stacking sau txog li 98% ntawm lub cell casing, tshem tawm tag nrho cov "tuag ces kaum" voids inherent nyob rau hauv lub qhov txhab jelly rolls.
- Internal Resistance:Stacked cells muaj ntau-tab kev sib txuas ua ke, slashing impedance txog li 15% thiab txo qis hluav taws xob thaum lub sij hawm them ceev.
- Mechanical Stress:Stacking tshem tawm cov teeb meem loj ntawm lub vojvoog khoov uas ua rau mob qog nqaij hlav hlwb, tiv thaiv electrode micro- tawg.
- Ntau lawm ceev:Winding tseem yog huab tais rau cov khoom tso tawm ntshiab (zoo tagnrho rau cylindrical lossis me prismatic hlwb), tab sis niaj hnub nruam stacking tshuab tau ceev ceev qhov sib txawv.
Lub Hook
Koj nyuam qhuav scaled koj prismatic cell tsim rau 100Ah siv lub siab -ceev winder. Koj muab tus qauv tso rau ntawm qhov ntsuas. Internal resistance yog los ntawm lub ru tsev. Cov ces kaum ntawm lub casing yog pom bulging tom qab tsib caug voj voog. Vim li cas? Vim tias koj ncab koj cov electrodes mus rau qhov tawg. Cov thawj tswj hwm ntau lawm nyiam qhov ceev ntawm winding. Tab sis physics tsis quav ntsej txog koj cov units ib feeb. Thaum koj ntsuas lub peev xwm, koj cov txheej txheem tsim khoom yuav tsum hloov kho. Tsis txhob kwv yees. Ntawm no yog qhov tseeb engineering.
Lub Physics ntawm Khoov: Lub Winding Bottleneck
Winding yog ceev. Nws yog nruam. Nws yog tus yeej tsis muaj kev sib tw rau 18650, 21700, thiab 4680 cylindrical hlwb. Tab sis kev siv nws mus rau loj - hom prismatic lossis lub hnab ntim cov hlwb qhia txog qhov tsis zoo ntawm cov tshuab.
Nyob rau hauv lub qhov txhab jelly yob, lub puab lem muaj ib tug dramatically tighter dabtsi yog khoov vojvoog tshaj lub sab lem.
Qhov Failure Scenario:Yog hais tias koj cua ib tug tuab, 250 µm NMC cathode nyob ib ncig ntawm ib tug nqaim 2 hli center pin, txheej txheej txheej stretches. Sab hauv txheej compresses thiab buckles. Cov khoom siv ua haujlwm tawg, nthuav tawm cov khoom siv txhuas tam sim no. Thaum lub sij hawm siab C- tus nqi caij tsheb kauj vab, lithium daim hlau ncaj qha rau hauv cov kab nrib pleb no. Koj lub xovtooj yuav raug kev puas tsuaj rau sab hauv luv ua ntej nws txawm ntaus 100 lub voj voog. Nws yog ticking lub sij hawm foob pob ntawm koj lub Hoobkas hauv pem teb.
Qhov Zoo Tshaj Plaws: Zero Kev Nyuaj Siab, Lub Zog Ntshiab
Z-folding stacking machines hloov cov geometry nkaus. Koj txiav cov electrodes rau hauv cov ntawv tsis sib xws thiab sib txuas nrog cov khoom sib txuas txuas ntxiv.
Cov electrodes nyob twj ywm zoo kawg nkaus. Zero bending kev nyuaj siab. Zero ces kaum cracking. Tsis tas li ntawd, vim hais tias txhua txhua cathode thiab anode txheej muaj nws tus kheej tab welded nyob rau hauv parallel, lub electron mus txawv tebchaws yog incredibly luv. Qhov no txhais tau hais tias kev txo qis hauv kev tiv thaiv sab hauv (IR). Yog tias koj tab tom tsim siab - tus nqi EV hlwb lossis loj heev Zog Cia Systems (ESS), stacking tsis yog -xav tau.
Engineering Insight:Tawm tsam nrog ntug kev sib dhos thaum lub sij hawm siab - ceev stacking? Lub misaligned anode yuav tsis npog lub cathode, ua rau tam sim lithium plating ntawm cov npoo. Koj xav tau laser - coj CCD pom kev kho. Hu rau TOB Tshiab Zog kom tau txais qhov tseeb kho qhov muag sib dhos specifications rau pebautomated Z-folding stacking tshuab tsumtshuab.
A vs B: Stacking vs. Winding Decision Matrix
Rau kev yuav cov thawj coj thiab cov kws tsim qauv npaj cov khoom lag luam ntau rau cov kab ntau lawm, qhov no yog koj lub hauv paus matrix.
| Metric | Txoj kev winding | Z-Folding Stacking txheej txheem |
| Volumetric Efficiency | ~ 85% (Qhov chaw khib nyiab) | ~ 98% (qhov siv qhov chaw siab tshaj) |
| Internal Resistance | Siab dua (Long ib tab kab) | Lower (Ntau-tab parallel) |
| Mechanical Stress | Siab (C-Kab tawg txaus ntshai) | Zero (Pov electrodes) |
| Kev Tsim Nyog Ceev | Ultra- nrawm (txog 3m / s web ceev) | Slower (Txawm hais tias kev txhim kho sai) |
| Khoom siv | Tsawg pib peev | Cov kev xav tau siab dua |
Cov cuab yeej sib txuam rau koj Chemistry
Koj tsis tuaj yeem yuam cov txheej txheem mus rau qhov tsis ncaj ncees lawm ntawm tes.
Yog tias koj yog lub chaw tsim khoom tsim me me 5Ah hnab rau cov neeg siv khoom siv hluav taws xob lossis drones, winding yog tus nqi siab heev - zoo. Pebindustrial roj teeb winding tshuab chaw tsim tshuaj pausCov kab tshwj xeeb muaj kev tswj xyuas nruj uas txo cov kev ntxhov siab ntawm kev khoov ntawm cov electrodes thinner.
Txawm li cas los xij, yog tias koj tab tom hloov mus rau cov khoom siv - lub xeev cov roj teeb lossis ultra- silicon anodes tuab, stacking yog koj txoj hauv kev nkaus xwb. Cov khoom electrolytes yog nruj. Lawv tsis tuaj yeem raug mob yam tsis muaj kev puas tsuaj.
Npaj Scale Up?
Kev xaiv ntawm winding thiab stacking dictates koj tag nrho lub Hoobkas layout, qhuav chav sizing, thiab downstream laser vuam yuav tsum. Tsis txhob ua qhov kev txiav txim siab no hauv lub tshuab nqus tsev. Raws li ib tug qub tub rog Suav turnkey muab kev pab, TOB Tshiab Zog khoom tiavlithium-ion roj teeb turnkey manufacturing kab daws teeb meem. Peb txheeb xyuas koj cov cell chemistry, lub hom phiaj muaj peev xwm, thiab pob nyiaj siv los tsim cov kab ntau lawm uas koj xav tau. Xa koj cov ntawv xov tooj ntawm tes rau peb hnub no rau cov khoom lag luam wholesale ncaj qha.
FAQ (Tib neeg kuj nug)
Q1. Cov txheej txheem twg yog qhov zoo dua rau lub peev xwm loj EV?
stacking. kiag li. Rau cov hlwb ntau tshaj 50Ah, Z- txheej txheem folding stacking muab superior thermal dissipation, txo qis sab hauv tsis kam, thiab tiv thaiv cov neeg kho tshuab electrode cracking txuam nrog nruj mob jelly rolls.
Q2. Puas yog cov txheej txheem stacking qeeb dua winding?
Yog, keeb kwm. Lub tshuab winding txheem tuaj yeem ua tiav ib lub xovtooj hauv vib nas this. Txawm li cas los xij, qhov sib txawv yog kaw. Niaj hnub nimno siab -ceev rotary stacking tshuab los ntawm cov tuam txhab sab saum toj tam sim no tuaj yeem tshaj 0.5 vib nas this ib daim ntawv electrode, ua rau lawv siv tau rau ntau lawm.
Q3. Kuv puas tuaj yeem siv lub tshuab winding rau lub hnab ntim khoom?
Yog lawm. Rau qis- lub hnab ntim lub peev xwm (feem ntau qis dua 10Ah) siv hauv cov khoom siv hluav taws xob, tiaj tus-mandrel winding yog tus qauv kev lag luam. Nws yog ceev thiab ua tau zoo. Cov teeb meem kev ntxhov siab tsuas yog ua qhov tseem ceeb thaum nce mus txog cov electrodes tuab thiab cov hneev taw loj dua.
