Ubwino Waumisiri Wa Zida Za Aluminiyamu Zopangira Zopangira Ma Battery Cell Packaging
Motsogozedwa ndi kufalikira kwachangu kwa makampani opanga mphamvu zatsopano, kufunikira kwa mabatire a lithiamu kukukulirakulira. Kupaka ma cell a batri kumachita gawo lalikulu pakuzindikira moyo wa batri, kachulukidwe mphamvu, ndi chitetezo ntchito. Chifukwa cha mawonekedwe ake apadera, mankhwala, ndi makhalidwe ngakhale ndondomeko, zojambulazo za aluminiyamu zakhala chinthu chachikulu choyikapo. Zotengera miyezo, deta, ndi milandu yofunsira, nkhaniyi ikufotokoza mwadongosolo katundu ndi ndondomeko ubwino wa zojambulazo aluminiyamu, kupereka phindu lofotokozera kwa ogwira ntchito m'makampani ndi makasitomala.
Ine. Zoyambira Zamakampani ndi Zofunikira Pakuyika Ma cell a Battery
1.1 Ntchito Zazikulu za Ma cell Packaging and Industry Development Trends
Ntchito zazikuluzikulu zama cell a batire zikuphatikiza:
- Chitetezo chakuthupi: kutsutsa zotsatira, kubowola, ndi mapindikidwe kuteteza zigawo zamkati
- Cholepheretsa chilengedwe: kuteteza chinyezi ndi mpweya wolowera kuti asawonongeke
- Kusindikiza ndi kutchinjiriza: kulekanitsa mabwalo amagetsi ndikuletsa mabwalo amfupi kapena kutayikira kwa electrolyte
Kukula kwa batri la lithiamu kukufikira pakuchulukira mphamvu kwamphamvu, chitetezo chokwanira, moyo wautali wozungulira, ndi mawonekedwe opepuka. Zamagetsi ogula zimatsindika mawonekedwe owonda kwambiri komanso osakhazikika, mabatire amphamvu amaika patsogolo chitetezo cha redundancy, ndi mabatire osungira mphamvu amayang'ana pa kukhazikika kwa nthawi yayitali komanso kutsika mtengo. Zida zachikhalidwe zimavutikira kukwaniritsa zofunikira izi.
Aluminium zojambulazo ndi mafilimu a aluminiyamu-pulasitiki, chifukwa cha kupepuka kwawo, mkulu chotchinga ntchito, ndi processing kusinthasintha, zakhala zida zokondedwa zopangira thumba ndi mabatire, ndi kuwonjezeka mosalekeza msika kulowa.
1.2 Zofunikira Pamagwiridwe Azinthu Pazoyika Zamafoni
Zofunikira zazikulu zogwirira ntchito pazonyamula zikuphatikizapo:
- High chotchinga ntchito:
- Kuchuluka kwa madzi omasulira (Mtengo WVTR) ≤ 0.01 g/m²·tsiku
- Mtengo wotsatsa kwa oxygen (OTR) ≤ 0.005 cm³/m²·tsiku
- Makina: mkulu wamakokedwe mphamvu, mlengalenga, ndi nkhonya kukana
- Ntchito yokhazikika yosindikiza kutentha: mphamvu yosindikizira kutentha ≥ 35 N/15 mm
- Electrolyte corrosion resistance
- Zopepuka komanso zotsika mtengo
- Kutsatira malamulo a chilengedwe monga RoHS
1.3 Kuyerekeza kwa Mainstream Cell Packaging Materials
Zida zamakono zopangira ma cell zimaphatikizapo nyumba zachitsulo, mafilimu a aluminiyamu-pulasitiki, ndi mafilimu apulasitiki. Kuyerekeza kukuwonetsedwa mu Table 1.
| Mtundu Wathupi | Core Composition | Zolepheretsa Magwiridwe | Mechanical Magwiridwe | Opepuka Level | Kukonza kusinthasintha | Electrolyte Resistance | Ika mtengo | Ntchito Zofananira |
|---|---|---|---|---|---|---|---|---|
| Aluminium alloy nyumba | Aluminiyamu alloy | Zabwino kwambiri | Zabwino kwambiri (zotsatira, kukanikiza) | Wapakati (kukula 2.7 g/cm³) | Osauka | Wapakati (amafuna zokutira) | Wapakati-Wapamwamba | Prismatic, ma cylindrical cell |
| Nyumba zazitsulo zosapanga dzimbiri | Chitsulo chosapanga dzimbiri | Zabwino kwambiri | Zabwino kwambiri (mphamvu yapamwamba) | Osauka (kukula 7.9 g/cm³) | Osauka | Zabwino kwambiri | Wapamwamba | Mphamvu zapamwamba komanso mabatire apadera |
| Filimu ya aluminium-pulasitiki | Aluminium zojambulazo + nayiloni + CPP | Zabwino kwambiri (pafupi ndi zitsulo) | Zabwino (kukana puncture, mlengalenga) | Zabwino kwambiri (50% zopepuka kuposa zitsulo) | Zabwino kwambiri | Zabwino kwambiri | Wapakati (kuchepa ndi kumasulira) | Mabatire a thumba ndi blade |
| Filimu yapulasitiki | Chiweto, CPP | Osauka | Wapakati | Zabwino kwambiri | Zabwino kwambiri | Wapakati | Pansi | Maselo otsika otsika |
Mawu omaliza:
Filimu ya aluminium-pulasitiki, ndi zojambulazo za aluminiyamu monga chotchinga chapakati, imapereka kukhathamiritsa koyenera kwa zizindikiro zazikulu zogwirira ntchito, kupangitsa kuti ikhale yoyenera kwambiri pamatumba ndi mabatire. Kuchita kwa zojambulazo za aluminiyamu kumatsimikizira mtundu wa ma phukusi ndipo kuyenera kukhala kofunikira pakusankha zinthu.
II. Makhalidwe Akuluakulu a Aluminium Foil Pakuyika Kwa Battery Cell
Chojambula cha aluminiyamu chomwe chimagwiritsidwa ntchito popanga ma cell chimaphatikizapo zojambulazo za aluminiyamu zoyera kwambiri (1050, 1060 mndandanda) ndi aluminium alloy zojambulazo (3003 mndandanda). Kudzera mwapadera akugudubuzika ndi pamwamba mankhwala njira, zinthuzi zimapereka chithandizo chofunikira pakupanga ma cell.
2.1 Zofunika Kwambiri za Aluminium Foil
2.1.1 Katundu wathupi
- Wopepuka: kukula 2.7 g/cm³ (gawo limodzi mwa magawo atatu a zitsulo zosapanga dzimbiri), kukulitsa kachulukidwe ka mphamvu
- Kukweza Kwambiri: kutalika 8-20%, kugudubuzika ku ≤ 5 μm, yoyenera kujambula
- Zabwino matenthedwe madutsidwe: 237 W /(M · K), kuonjezera kukhazikika kwa kutentha
2.1.2 Chemical Properties
- Mwachilengedwe amapanga wosanjikiza wandiweyani wa 2-5 nm Al₂O₃ oxide pa kutentha, kupereka intrinsic oxidation ndi kukana dzimbiri
- Zirconium yopanda chromium kapena titaniyamu passivation imapangitsanso kukhazikika kwa okusayidi komanso kukana kwa electrolyte.
2.1.3 Mechanical Properties
Kugwira ntchito kwamakina kumatha kuyendetsedwa ndendende kudzera munjira za alloying ndi rolling.
| Gulu la Aloyi | Main Alloying Elements | Kulimba kwamakokedwe (MPa) | Elongation (%) | Ubwino waukulu | Ntchito Zofananira |
|---|---|---|---|---|---|
| 1050 | Al ≥ 99.5% | 70-130 | 5-20 | Zabwino kwambiri ductility, kukana dzimbiri | Maselo ogula okhazikika |
| 1060 | Al ≥ 99.6% | 70-180 | 8-20 | Chiyero chachikulu, kwambiri processability | Ogula apamwamba komanso ma cell a thumba |
| 3003 | Mn 1.0–1.5% | 110-230 | 12-20 | Mphamvu yayikulu, wokhazikika kupanga | Mabatire osungira mphamvu ndi mphamvu |
2.2 Zofunikira Zapadera Zopangira Packaging Aluminium Foil
2.2.1 Ultra-Thin Rolling
Kuchuluka kwake kumayambira 20-40 μm, pomwe zogulitsa zapamwamba zimafika ≤ 5 μm. Kupatuka kwa makulidwe kumayendetsedwa mkati mwa ± 4% (apamwamba ≤ ± 2%).
Chitsanzo: Chalco pa 0.005 mm aluminium zojambulazo za filimu ya aluminiyamu-pulasitiki imathandizira mabatire olimba omwe ali ndi mphamvu zambiri > 500 Wh/kg.
2.2.2 Pamtunda
Kuphatikizapo kuyeretsa pamwamba, chromium-free passivation, ndi zokutira nano (Al₂o₃, SiO₂), kukulitsa kukana kwa dzimbiri ndi kugwirizanitsa zomatira ndikuwonjezera magwiridwe antchito ndi 10 ×.
2.2.3 Chiwongolero chowongolera
Malinga ndi GB / T 3198-2020, premium aluminium zojambulazo zimafuna kachulukidwe ka pinhole ≤ 400 PCS /m, pomwe zogulitsa zapamwamba ≤ 100 PCS /m, zimatheka kudzera mumayendedwe olondola komanso owunikira pa intaneti.
III. Ubwino Waukadaulo wa Aluminium Foil mu Njira Zopangira Ma cell Packaging
3.1 Aluminium-Pulasitiki Film Lamination
Aluminiyamu zojambulazo zimawonetsa kuyanjana mwamphamvu pouma, kutentha, ndi njira youma-matenthedwe lamination, kupeza mphamvu ya peel ≥ 15 N/15 mm pamapulogalamu apamwamba kwambiri.
3.2 Kupanga Zojambula Zakuya
Ndi kutalika kwa 8-20%, zojambulajambula za aluminiyamu zimathandizira kujambula kwakuya kwa 5-10 mm popanda kusweka. Malo ake osalala (Ra ≤ 0.2 μm) amachepetsa kukangana ndikuwongolera kupanga bwino.
3.3 Kusindikiza Kutentha
High matenthedwe conductivity amatsimikizira yunifolomu CPP kusungunuka. Mphamvu yosindikizira kutentha ≥ 35 N/15 mm (mpaka 50 N/15 mm), ndi magwiridwe antchito okhazikika pa 155 ± 5°C.
3.4 Kudula ndi M'mphepete Processing
Kuuma pang'ono kumathandizira kudula kopanda burr ndikupatuka kwa mawonekedwe ≤ ± 0.1 mm, oyenera mizere yodzichitira yokha yomwe ikugwira ntchito pa 10-15 m / min.
Iv. Ubwino Wamagwiridwe Antchito ndi Kutsimikizika kwa Ntchito
4.1 High Barrier Performance
Chita 20 μm zojambulazo za aluminiyamu zimakwaniritsa WVTR ≤ 0.01 g/m²·tsiku ndi OTR ≤ 0.005 cm³/m²·tsiku.
Chikwama: 30 μm filimu yojambulidwa ndi aluminiyamu yosungidwa ≥ 90% mphamvu pambuyo 1000 h pa 85°C/85% RH.
4.2 Mechanical Safety Margin
Mphamvu yamphamvu mpaka 230 MPa, kukana puncture ≥ 300 N, ndi kuchita bwino kwambiri pakutsika, kukanikiza, ndi mayeso olowera singano.
4.3 Ubwino Wopepuka
Poyerekeza ndi nyumba zachitsulo, Kupaka kwa aluminiyamu-pulasitiki kumachepetsa kulemera kwa 50-70%, kuonjezera kachulukidwe ka mphamvu mpaka 10%.
4.4 Electrolyte Corrosion Resistance
Zolemba za aluminiyamu zopanda chromium zimasungidwa > 90% peel mphamvu pambuyo 7 masiku pa 60 ° C kumizidwa kwa electrolyte.
4.5 Mtengo Mwachangu
Zolemba za aluminiyamu zapakhomo zimawononga ~3–5 RMB/m², otsika kwambiri kuposa mafilimu opangidwa ndi aluminiyamu-pulasitiki, ndi recyclability ≥ 95%.
V. Kuwongolera Ubwino ndi Miyezo Yamakampani
5.1 Core Quality Control Indicators
| Chizindikiro | Chofunikira | Standard | Njira Yoyesera |
|---|---|---|---|
| Kupatuka Kwakukula | ≤ ±4% (apamwamba ≤ ± 2%) | Gb / t 3198-2020 | Laser makulidwe gauge |
| Pinhole density | ≤ 400 PCS /m (apamwamba ≤ 100 PCS /m) | Gb / t 3198-2020 | Kujambula kwamdima wakuda |
| Ubwino wapamwamba | Ra ≤ 0.2 μm | Gb / t 3615-2022 | Muyeso wouma |
| Makina | Kuthamanga ≥ 70 MPa, elongation ≥ 8% | Gb / t 228.1-2021 | Kuyesa kwamphamvu |
| Zotchinga Zotchinga | Mtengo WVTR 0.01 g/m²·tsiku | Gb / t 1037-2021 | Kuyesa kwa permeability |
VI. Milandu Yofunsira ndi Kutsimikizika Kwa Msika
6.1 Magetsi amagetsi
- Huawei Mate 60 Pro: 1060 zitsulo za aluminiyumu, kuchuluka kwa batri 2.8 mm, kachulukidwe mphamvu 280 Wh/kg
- Apple MacBook: 3003 aluminium alloy zojambulazo, kachulukidwe mphamvu ≥ 300 Wh/kg
6.2 Mabatire amphamvu
- BYD Blade Battery: 3003 aluminium alloy zojambulazo, kachulukidwe mphamvu 180 Wh/kg, chitetezo chokwanira
- CATL Qilin Battery: 8 μm chojambula cha aluminiyamu chophatikizika, kachulukidwe mphamvu 250 Wh/kg
6.3 Mabatire Osungira Mphamvu
- Njira zosungiramo nyumba: 1060 zitsulo za aluminiyumu, moyo wozungulira ≥ 6000 kuzungulira, 15-zaka moyo
VII. Q&A (Nthawi zambiri mafunso)
- Zofunikira za foil zimasiyana bwanji ndi mtundu wa cell?
Ma cell a mthumba amakonda zojambulazo zoyera kwambiri; masamba tsamba amafuna apamwamba mphamvu aloyi zojambulazo. - Kodi makulidwe a foil amakhudza bwanji magwiridwe antchito?
Zolembazo zowuma zimathandizira zotchinga koma zimachepetsa kuchuluka kwa mphamvu; Mayankho a kompositi amalinganiza zonse ziwiri. - Kusiyana kwa zojambula zapakhomo ndi zochokera kunja?
Mipata yayikulu imakhala yolondola kwambiri, kukhazikika kwa pinhole, ndi kusasinthasintha pamwamba. - Kuwopsa kwa electrolyte kwa nthawi yayitali?
Kuchepetsedwa ndi chromium-free passivation ndi nano-coatings. - Momwe mungatsimikizire kuti mzere wopanga ukugwirizana?
Tsimikizirani lamination, kutentha kusindikiza, ndi kuchepetsa ntchito pogwiritsa ntchito mayesero oyendetsa ndege. - Zofunikira zatsopano kuchokera ku mabatire olimba?
Woonda kwambiri (≤ 5 μm), chotchinga chapamwamba, amphamvu mawonekedwe ngakhale, ndi kusinthika kwa vacuum process.