Busbars mu bbaatule za lithium kye ki?

Ebitundu ebinene eby’ekikomo oba aluminiyamu ebiwanvu byokka ebikung’aanya amasannyalaze okuva mu nkumi n’enkumi z’obutoffaali ne bugasindika okugenda ku bitundu ebinene ebibiri. Awatali bo pack tesobola kukola. Nga bakoze bubi pack esukkiridde okubuguma, efiirwa range, oba okukwata omuliro.

Engeri gye zikozesebwamu mu butuufu .

Obutoffaali busooka kukwatagana mu modulo nga bukozesa waya za nickel oba-waya za aluminiyamu eziyungiddwa. Modules olwo zifuna series-eyungiddwa okuyita mu busbars entuufu. Obuwoomi obukulu busatu bufuga leero:

Busbar eya laminated .

Layers eziwerako eza 0.8–1.5 mm copper foil nga zirina PET oba PI firimu ennyimpi wakati, nga eyokya-enyigirizibwa n’ekendeera-ezibiddwa. Kumpi buli 800 V platform ebakozesa kubanga inductance egwa wansi wa 20 NH. Porsche Taycan, Hyundai Ioniq 5/6, Kia EV6, emmotoka ezisinga ez’Abachina 800 V, zonna zikoleddwa mu lamina.

Busbar ekyukakyuka .

Omutwalo gwa 0.1–0.3 mm bare copper foils nga ziweereddwa ku nkomerero zokka, wakati esigala nga ekyukakyuka. Tesla yazikozesa ku paaka za model 3/y ezasooka, oluvannyuma n’ekyusibwa n’efuuka laminated. Still common nga pack erina okukyusakyusa ne chassis.

Ebbaala enkakali .

Simple 10×50 mm oba 10×100 mm milled copper bars z’okyalaba mu ByD blade packs, amaanyi agasinga obungi-Storage containers, n’ebintu bingi ebya LFP eby’ettunzi-ebipapula by’emmotoka. Cheap and easy to machine, naye zikutuka okwetoloola ebituli bya bolt oluvannyuma lw’okuzingulula enkumi ntono ez’ebbugumu.

Real-Ensi ya current density gye nkozesa .

Ekikomo mu bbaatule (okunyogoza okw’obutonde, semi-okuzibiddwa):2.0–2.2 A/mm2 Ebigenda mu maaso .is perfectly obukuumi.
5 mm × 30 mm bbaala=150 mm2 → 300–330 A obutasalako, 600–700 A okumala 1–30 s okubutuka kwa bulijjo.
Abantu abajuliza 1.6 A/MM2 bakoppa emmeeza za switchgear; Munda mu paaka empewo efuluma mu butuufu esinga.

Enkola z'okuyunga ze ndaba buli lunaku .

• Laser Welding: Kabaka. Ekikomo-ku-ekikomo oba ekikomo {-ku-aluminum (nga kikyusa nickel shim) kiwa < 0.03 mΩ buli kiyungo.
• Bolted: Amaanyi-Abasamize bagala nnyo M10/M12 TIN-bulooti eziteekeddwako + Belleville Washers, 20–25 nm. Empeereza ennyangu.
• Friction stir oba magnetic pulse welding: Catl n’ebirala ebitonotono, si bya bulijjo.
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Ennamba okuva mu packs nze ku lwange nkutuse .

• 2021–2023 Model 3/y (Panasonic 2170): 4-layer × 1 mm × 38 mm Laminated ≈ 500 a continuous .
• 2024 Model Y (LG 4680): 5-layer × 1.2 mm × 42 mm
• Xiaomi su7 800 V Ekipapula: 6-layer × 1 mm × 48 mm
• BYD seal / qin nga ogasseeko dm-I: 10 mm × 80 mm ebbaala ekaluba, ~350 a .
• Megapack 2 xl: 12 mm × 120 mm tin-Ebbaala ezikaluba ezisiigiddwa, 1000 a continuous buli mutendera .
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Ebbugumu likoma buli muntu ekitiibwa .

90℃continuous ku kikomo kungulu, 110–120℃short-Term ekkirizibwa, waggulu wa 130℃firimu ya insulation etandika okweraliikirira. Packs ezisinga zinyiga NTCs butereevu ku busbar era BMS egiraba nga hawk.

Emitendera tulina okutuukiriza mu butuufu .

ISO 6469-3 – Obukuumi bw’amasannyalaze .

ISO 12405 – Ekigezo ky’okupakinga (pack test) spec .

IEC 62660-3 – Omulimu gw’obutoffaali n’okupakinga/Obukuumi .

QC/T 1075 – Chinese EV Pack Spec (bwe kiba nga kitundibwa mu China)

UL 1973 oba UL 2580 okusinziira ku katale .

Ekyo kirungi nnyo. Any more detail and I'd just be repeating datasheets za data.