Lithium roj teeb Winding tshuab: Cov ntsiab lus, cov txheej txheem tseem ceeb thiab cov lus qhia zoo

Hauv kev tsim cov txheej txheem ntawm cov roj teeb lithium-ion, feem ntau muaj ntau txoj hauv kev los faib cov txheej txheem. Cov txheej txheem tuaj yeem muab faib ua peb yam tseem ceeb: kev tsim hluav taws xob, txheej txheem sib dhos thiab kev sim ntawm tes (raws li qhia hauv daim duab hauv qab no), thiab tseem muaj cov tuam txhab uas faib nws ua ntej-winding thiab post-winding cov txheej txheem, thiab qhov demarcation point yog. txoj kev winding. Vim nws txoj kev sib koom ua ke muaj zog, tuaj yeem ua rau lub roj teeb zoo li pib molding, yog li cov txheej txheem winding hauv lithium-ion roj teeb tsim ua lub luag haujlwm tseem ceeb, yog qhov tseem ceeb, cov txheej txheem winding tsim los ntawm cov tub ntxhais dov feem ntau hu ua liab qab. roj teeb cell (Jelly-Roll, hu ua JR).

Lithium-ion Battery Manufacturing txheej txheem
Hauv kev tsim cov roj teeb lithium-ion, cov txheej txheem tseem ceeb winding yog qhia raws li hauv qab no. Kev ua haujlwm tshwj xeeb yog dov cov ncej zoo, cov ncej tsis zoo thiab cov yeeb yaj kiab sib cais ua ke los ntawm lub tshuab winding lub koob tshuab, thiab cov ncej zoo thiab qhov tsis zoo uas nyob ib sab yog cais los ntawm cov yeeb yaj kiab sib cais txhawm rau tiv thaiv luv luv. Tom qab qhov winding tiav lawm, cov tub ntxhais yog tsau nrog cov ntaub nplaum kaw kom tiv thaiv cov tub ntxhais los ntawm kev sib cais, thiab ntws mus rau cov txheej txheem tom ntej. Hauv cov txheej txheem no, tus yuam sij yog kom tsis txhob muaj kev sib cuag ntawm lub cev ntawm qhov zoo thiab qhov tsis zoo electrodes, thiab daim ntawv tsis zoo electrode tuaj yeem npog tag nrho cov ntawv electrode zoo hauv ob qho tib si kab rov tav thiab ntsug.

Schematic daim duab ntawm cov txheej txheem winding
Nyob rau hauv cov txheej txheem winding ntawm cov tub ntxhais, feem ntau ob yob pins clamp ob txheej ntawm diaphragm rau ua ntej winding, thiab ces pub lub zoo los yog tsis zoo ncej piece nyob rau hauv lem, thiab ncej ncej yog clamped ntawm ob txheej ntawm diaphragm rau winding. Nyob rau hauv lub longitudinal kev taw qhia ntawm cov tub ntxhais, lub diaphragm tshaj qhov tsis zoo diaphragm, thiab qhov tsis zoo diaphragm tshaj qhov zoo diaphragm, thiaj li tsis txhob sib cuag luv luv Circuit Court ntawm qhov zoo thiab tsis zoo diaphragms.

Schematic daim duab ntawm winding koob clamping diaphragm

Lub cev kos duab ntawm lub tshuab tsis siv neeg winding

Winding tshuab yog cov cuab yeej tseem ceeb kom paub txog cov txheej txheem winding. Raws li daim duab saum toj no, nws cov khoom tseem ceeb thiab kev ua haujlwm yog raws li hauv qab no:

1. Ncej piece mov system: xa cov ncej zoo thiab tsis zoo raws li cov lus qhia kev tsheb nqaj hlau mus rau ob txheej ntawm diaphragm ntawm AA sab thiab BB sab raws li kom ntseeg tau tias cov khoom ruaj khov ntawm cov ncej.
2. Diaphragm unwinding system: Nws suav nrog sab sauv thiab sab diaphragms kom paub txog qhov tsis siv neeg thiab txuas ntxiv ntawm cov diaphragms rau lub koob winding.
3. Kev tswj qhov nruj: txhawm rau tswj qhov nro tas li ntawm lub diaphragm thaum lub caij winding.
4. Winding thiab gluing system: rau gluing thiab kho cov cores tom qab winding.
5. Unloading conveyor system: Tsis siv neeg dismantle cov cores los ntawm cov koob thiab muab tso rau hauv lub tshuab tsis siv neeg conveyor siv.
6. Ko taw hloov: Thaum tsis muaj qhov txawv txav, txav ntawm ko taw hloov los tswj kev ua haujlwm ib txwm ntawm winding.
7. Tib neeg-khoos phis tawj kev sib cuam tshuam: nrog rau kev teeb tsa, kev qhia debugging, tswb ceeb toom thiab lwm yam haujlwm.

Los ntawm cov kev soj ntsuam saum toj no ntawm cov txheej txheem winding, nws tuaj yeem pom tau tias lub winding ntawm cov tub ntxhais hluav taws xob muaj ob qhov kev sib txuas uas tsis tuaj yeem: thawb lub koob thiab rub lub koob.
Push lub koob txheej txheem: ob lub yob ntawm koob txuas ntxiv nyob rau hauv qhov kev txiav txim ntawm lub thawb lub tog raj kheej, los ntawm ob sab ntawm lub diaphragm, ob lub yob ntawm cov koob tsim los ntawm kev sib xyaw ntawm rab koob lub tog raj kheej tso rau hauv lub tes tsho, cov yob ntawm rab koob. nyob ze rau clamp lub diaphragm, tib lub sij hawm, ob lub yob ntawm koob sib koom ua ke los ua ib qho kev sib luag zoo, raws li cov tub ntxhais ntawm cov tub ntxhais winding.

Schematic daim duab ntawm koob thawb txheej txheem

Koob siv cov txheej txheem: tom qab cov tub ntxhais winding tiav lawm, ob rab koob yog retracted nyob rau hauv qhov kev txiav txim ntawm rab koob lub tog raj kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej kheej, thiab ob rab koob yog coiled nyob rau hauv opposite lus qhia, thiab qhov luaj li cas ntawm lub dawb kawg ntawm rab koob yog txo los tsim ib tug tej yam sib txawv ntawm lub koob thiab cov tub ntxhais lub puab nto, thiab nrog rau rab koob retracted txheeb ze rau lub tes tsho tuav, cov koob thiab cov tub ntxhais tuaj yeem sib cais zoo.

Schematic daim duab ntawm lub koob extraction txheej txheem

"Kub" nyob rau hauv tus txheej txheem ntawm kev thawb thiab rub tawm lub koob saum toj no yog hais txog lub koob, uas, raws li lub hauv paus ntsiab lus ntawm lub tshuab winding, muaj kev cuam tshuam loj rau lub winding ceev thiab qhov zoo ntawm cov tub ntxhais. Tam sim no, feem ntau ntawm cov tshuab winding siv puag ncig, oval thiab tiaj tus pob zeb diamond-puab koob. Rau puag ncig thiab oval koob, vim nws muaj qee qhov arc, yuav ua rau deformation ntawm ncej pob ntseg ntawm cov tub ntxhais, nyob rau hauv cov txheej txheem tom ntej ntawm cov tub ntxhais nias, tab sis kuj yooj yim ua rau sab hauv wrinkling thiab deformation ntawm cov tub ntxhais. Raws li lub tiaj tus pob zeb diamond-zoo li tus koob, vim qhov loj qhov sib txawv ntawm qhov ntev thiab luv axes, qhov nro ntawm cov ncej thiab diaphragm sib txawv heev, yuav tsum tau tsav lub cev muaj zog rau cua ntawm qhov sib txawv ceev, uas ua rau cov txheej txheem nyuaj rau kev tswj, thiab winding ceev feem ntau yog tsawg.

Schematic daim duab ntawm cov koob winding

Siv qhov nyuaj tshaj plaws thiab feem ntau tiaj tus pob zeb diamond-shaped koob ua piv txwv, nyob rau hauv tus txheej txheem ntawm nws winding thiab kev sib hloov, qhov zoo thiab tsis zoo ncej daim thiab diaphragm yog ib txwm qhwv nyob ib ncig ntawm lub kaum sab xis ntawm B, C, D, E, F thiab G raws li qhov kev txhawb nqa.

Schematic daim duab ntawm tiaj pob zeb diamond-shaped winding koob rotation

Yog li ntawd, cov txheej txheem winding tuaj yeem muab faib ua segmental winding nrog OB, OC, OD, OE, OF, OG raws li lub vojvoog, thiab tsuas yog yuav tsum tau txheeb xyuas qhov kev hloov ntawm txoj kab ceev hauv xya lub kaum sab xis ntawm θ0, θ1, θ2, θ3, θ4, θ5, θ6, thiab θ7, nyob rau hauv thiaj li yuav ua kom tiav quantitatively piav txog lub cyclic rotation txheej txheem ntawm lub winding koob.

Schematic daim duab ntawm ntau lub kaum sab xis ntawm rab koob rotation

Raws li kev sib raug zoo trigonometric, cov kev sib raug zoo tuaj yeem muab tau.

Los ntawm cov kab zauv saum toj no, nws yog ib qho yooj yim kom pom tias thaum lub koob winding raug mob ntawm qhov tsis tu ncua angular tshaj tawm, cov kab nrawm nrawm ntawm winding thiab lub kaum sab xis tsim ntawm qhov chaw txhawb nqa ntawm rab koob thiab qhov zoo thiab qhov tsis zoo ntawm cov ncej thiab cov diaphragm yog. nyob rau hauv segmented muaj nuj nqi kev sib raug zoo. Cov duab kev sib raug zoo ntawm ob yog simulated los ntawm Matlab raws li hauv qab no:

Kev hloov ntawm winding ceev ntawm cov ces kaum sib txawv

Nws yog intuitively pom tseeb tias qhov piv ntawm qhov siab tshaj plaws linear tshaj tawm mus rau qhov tsawg tshaj plaws linear tshaj tawm nyob rau hauv cov txheej txheem winding ntawm lub tiaj tus pob zeb diamond-puab koob nyob rau hauv daim duab yuav ua tau ntau tshaj 10 zaug. Xws li kev hloov pauv loj hauv kab nrawm yuav ua rau muaj kev hloov pauv loj hauv qhov nro ntawm qhov zoo thiab qhov tsis zoo ntawm cov electrodes thiab cov diaphragm, uas yog lub ntsiab ua rau muaj kev hloov pauv hauv winding nro. Kev hloov pauv ntau dhau tuaj yeem ua rau diaphragm stretching thaum lub sij hawm winding txheej txheem, diaphragm shrinkage tom qab winding, thiab me me qhov sib nrug ntawm cov ces kaum sab hauv cov tub ntxhais tom qab core pressing. Nyob rau hauv cov txheej txheem them nyiaj, qhov nthuav dav ntawm cov ncej ncej ua rau muaj kev ntxhov siab nyob rau hauv cov kev taw qhia ntawm qhov dav ntawm cov tub ntxhais tsis muaj zog, ua rau lub sijhawm khoov, ua rau muaj kev cuam tshuam ntawm tus ncej, thiab cov roj teeb lithium npaj tau thaum kawg tshwm sim "S "deformation.

CT duab thiab daim duab disassembly ntawm "S" deformed core

Tam sim no, txhawm rau daws qhov teeb meem ntawm cov tub ntxhais tsis zoo (feem ntau deformation) tshwm sim los ntawm cov duab ntawm rab koob winding, ob txoj hauv kev feem ntau yog siv: qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ceev winding.

1. Qhov sib txawv nro winding: Siv lub cylindrical roj teeb ua piv txwv, nyob rau hauv tas li angular tshaj tawm, lub linear tshaj tawm nce nrog tus naj npawb ntawm winding khaubncaws sab nraud povtseg, uas ua rau kom muaj kev sib zog. Qhov sib txawv nro winding, uas yog, los ntawm kev tswj qhov nro, kom qhov nro thov rau cov ncej lossis diaphragm nrog kev nce ntawm cov txheej txheem winding thiab cov kab txo qis, yog li ntawd nyob rau hauv cov ntaub ntawv ntawm qhov kev sib hloov ceev, tab sis tseem muaj peev xwm. ua kom tag nrho cov txheej txheem winding ntawm qhov nro kom deb li deb tau kom tswj tau qhov tsis tu ncua. Ntau qhov sib txawv ntawm qhov sib txawv ntawm qhov kev sib tw winding tau ua rau cov lus xaus hauv qab no:
ib. Qhov me me ntawm winding nro, qhov zoo dua qhov kev txhim kho ntawm cov tub ntxhais deformation.
b. Thaum lub sij hawm tas li ceev winding, raws li cov tub ntxhais txoj kab uas hla nce, qhov nro txo ​​linearly nrog ib tug tsawg dua kev pheej hmoo ntawm deformation dua nrog tas li nro winding.
2. Variable speed winding: Siv lub xov tooj ntawm tes ua piv txwv, lub tiaj tus pob zeb diamond-shaped winding koob feem ntau yog siv. Thaum lub koob yog qhov txhab ntawm qhov nrawm nrawm, cov kab nrawm nrawm nrawm nrawm, ua rau muaj qhov sib txawv loj hauv txheej sib nrug ntawm cov ces kaum ntawm cov tub ntxhais. Nyob rau lub sijhawm no, qhov xav tau ntawm kev hloov pauv hloov pauv rov qab txiav tawm ntawm txoj cai ntawm kev hloov pauv hloov ceev, uas yog, winding ntawm kev sib hloov ceev nrog lub kaum sab xis hloov thiab hloov, txhawm rau kom paub txog cov txheej txheem winding ntawm linear ceev fluctuations me me. raws li qhov ua tau, txhawm rau xyuas kom meej tias qhov nro hloov pauv hauv qhov ntau ntawm tus nqi me me amplitude.

Nyob rau hauv luv luv, cov duab ntawm lub winding koob yuav cuam tshuam lub flatness ntawm tus ncej pob ntseg (core tawm los thiab hluav taws xob kev ua tau zoo), winding ceev (productivity), core internal stress uniformity (zoo li teeb meem deformation) thiab hais txog. Rau cov roj teeb cylindrical, cov koob puag ncig feem ntau yog siv; rau cov roj teeb square, elliptical lossis ca rhombic koob feem ntau yog siv (qee zaum, cov koob puag ncig kuj tuaj yeem siv los ua cua thiab ua kom cov tub ntxhais ua kom lub hauv paus square). Tsis tas li ntawd, ntau qhov kev sim cov ntaub ntawv qhia tau hais tias qhov zoo ntawm cov cores muaj qhov cuam tshuam tseem ceeb rau kev ua haujlwm ntawm electrochemical thiab kev nyab xeeb ntawm cov roj teeb zaum kawg.

Raws li qhov no, peb tau txheeb xyuas qee qhov kev txhawj xeeb tseem ceeb thiab kev ceev faj hauv cov txheej txheem winding ntawm lithium roj teeb, nyob rau hauv kev cia siab ntawm kev zam kom tsis txhob ua haujlwm tsis raug hauv cov txheej txheem winding kom ntau li ntau tau, txhawm rau tsim cov roj teeb lithium uas ua tau raws li qhov yuav tsum tau ua.

Txhawm rau kom pom cov tub ntxhais qhov tsis xws luag, cov tub ntxhais tuaj yeem muab tso rau hauv AB kua nplaum epoxy resin rau kev kho, thiab tom qab ntawd tus ntoo khaub lig tuaj yeem txiav thiab polished nrog cov ntawv xuab zeb. Nws yog qhov zoo tshaj plaws los soj ntsuam cov qauv npaj nyob rau hauv lub tshuab kuaj kab mob los yog scanning electron microscope, thiaj li yuav tau txais cov ntaub ntawv hauv qhov tsis zoo ntawm cov tub ntxhais.

Internal defect daim ntawv qhia ntawm lub hauv paus
(a) Daim duab qhia tau hais tias muaj peev xwm tseem ceeb uas tsis muaj qhov pom tseeb hauv qhov tsis xws luag.
(b) Nyob rau hauv daim duab, daim duab ncej yog pom tseeb twisted thiab deformed, uas tej zaum yuav muaj feem xyuam rau lub winding nro, lub nro loj heev ua rau lub ncej daim wrinkles, thiab zoo li no tsis xws luag yuav ua rau lub roj teeb interface deteriorate thiab lithium. nag lossis daus, uas yuav deteriorate cov kev ua tau zoo ntawm lub roj teeb.
(c) Muaj cov khoom txawv teb chaws ntawm cov electrode thiab cov diaphragm hauv daim duab. Qhov kev tsis zoo no tuaj yeem ua rau muaj kev tso tawm tus kheej hnyav thiab txawm tias ua rau muaj teeb meem kev nyab xeeb, tab sis feem ntau nws tuaj yeem kuaj pom hauv Hi-pot test.
(d) Cov electrode hauv daim duab muaj cov qauv tsis zoo thiab qhov zoo, uas yuav ua rau muaj peev xwm tsawg lossis lithium nag lossis daus.
(e) Cov electrode nyob rau hauv daim duab muaj hmoov av sib xyaw rau hauv, uas yuav ua rau kom tus kheej tawm ntawm lub roj teeb.

Tsis tas li ntawd, qhov tsis xws luag hauv cov tub ntxhais tseem tuaj yeem ua tus yam ntxwv los ntawm kev sim tsis muaj kev puas tsuaj, xws li kev siv X-ray thiab CT kuaj. Cov hauv qab no yog ib qho kev qhia luv luv rau qee cov txheej txheem tseem ceeb uas tsis raug:

1. Kev tiv thaiv tsis zoo ntawm cov ncej ncej: lub hauv paus tsis zoo ntawm cov ncej tsis tau npog tag nrho nrog cov ncej zoo, uas tuaj yeem ua rau lub roj teeb deformation thiab lithium nag lossis daus, uas ua rau muaj kev phom sij rau kev nyab xeeb.

2. Deformation ntawm tus ncej: lub ncej ncej yog deformed los ntawm extrusion, uas yuav ua rau sab hauv luv luv Circuit Court thiab coj teeb meem kev nyab xeeb loj.

Nws yog tsim nyog hais tias nyob rau hauv 2017, lub sensational samsung note7 xov tooj ntawm tes tawg rooj plaub, qhov kev tshawb fawb tshwm sim yog vim tsis zoo electrode nyob rau hauv lub roj teeb yog nyem los ua ib tug luv luv Circuit Court, yog li ua rau lub roj teeb tawg, kev huam yuaj tshwm sim los ntawm Samsung electronics. poob ntau tshaj 6 billion dollars.

3. Hlau txawv teb chaws teeb meem: hlau txawv teb chaws teeb meem yog cov kev ua tau zoo ntawm lithium-ion roj teeb killer, tej zaum yuav los ntawm muab tshuaj txhuam, khoom siv los yog ib puag ncig. Cov khoom loj ntawm cov hlau txawv teb chaws tuaj yeem ua rau lub cev luv luv, thiab thaum cov hlau txawv teb chaws sib xyaw rau hauv qhov zoo electrode, nws yuav raug oxidized thiab tom qab ntawd tso rau ntawm qhov tsis zoo electrode, tho lub diaphragm, thiab thaum kawg ua rau sab hauv. luv Circuit Court nyob rau hauv lub roj teeb, uas ua rau muaj kev nyab xeeb txaus ntshai. Cov hlau txawv teb chaws yog Fe, Cu, Zn, Sn thiab lwm yam.

Lithium roj teeb winding tshuab yog siv rau winding lithium roj teeb hlwb, uas yog ib yam khoom siv los sib sau ua ke zoo electrode daim ntawv, daim ntawv tsis zoo electrode thiab diaphragm rau hauv ib lub pob tseem ceeb (JR: JellyRoll) los ntawm kev sib hloov tas mus li. Cov khoom siv hluav taws xob tsim hluav taws xob hauv tsev tau pib xyoo 2006, los ntawm semi-automatic round, semi-automatic square winding, automated zaj duab xis ntau lawm, thiab tom qab ntawd tsim ua ke automation, zaj duab xis winding tshuab, laser tuag-txiav winding tshuab, anode nruam winding tshuab, diaphragm nruam winding tshuab, thiab lwm yam.

Ntawm no, peb tshwj xeeb tshaj yog xav kom Yixinfeng laser tuag-txiav winding thiab thawb lub tshuab tiaj tus. Lub tshuab no ua ke nrog cov thev naus laus zis thev naus laus zis laser tuag-txiav, cov txheej txheem winding ua haujlwm zoo thiab cov haujlwm nrawm nrawm, uas tuaj yeem txhim kho cov khoom lag luam zoo thiab zoo ntawm lithium roj teeb. Nws muaj cov txiaj ntsig tseem ceeb hauv qab no:


1. High-precision tuag-txiav: xyuas kom meej qhov loj ntawm tus ncej thiab diaphragm, txo cov khoom pov tseg thiab txhim kho cov roj teeb sib xws.
2. Stable winding: Optimized winding mechanism thiab tswj system ua kom nruj thiab ruaj khov qauv, txo cov kev tiv thaiv sab hauv thiab txhim kho roj teeb kev ua tau zoo.
3. High-efficiency leveling: Unique leveling tsim ua rau saum npoo ntawm cov cores tiaj tus, txo cov kev ntxhov siab tsis sib xws, thiab ua rau lub roj teeb ntev.
4. Kev tswj kev txawj ntse: Nruab nrog kev sib txuas ntawm tib neeg-khoos phis tawj sib txuas, nws paub qhov tseeb qhov teeb tsa thiab kev saib xyuas lub sijhawm tiag tiag, kev ua haujlwm yooj yim thiab kev saib xyuas yooj yim.
5. Ntau yam kev sib raug zoo: nws kuj tuaj yeem ua 18, 21, 32, 46, 50, 60 tag nrho cov qauv ntawm cov roj teeb, kom tau raws li koj cov kev xav tau ntau yam.

Lithium - Ion roj teeb khoom
Xaiv Yixinfeng laser tuag-txiav, winding thiab thawb lub tshuab coj kom zoo dua thiab ua haujlwm zoo rau koj lithium roj teeb ntau lawm!