Lithium Battery ni hta Busbar ngu ai gaw hpa rai ta?

Nov 26, 2025

Shiga hpe tawn da u

Wan hku law ai cell ni kaw na current hpe shinggyin la nna, terminal kaba lahkawng de shapraw dat ai magri (sh) aluminum n-gun ja ai daw ni sha re. Shanhte n lawm yang pack gaw n mai galaw ai. Shanhte hpe shut ai hku galaw ai shaloi, pack gaw grai katsi mat ai, range sum mat ai (sh) wan hkru mat ai.

Cell ni hpe shawng nnan nickel strips (sh) wire-hkap da ai aluminum wire ni hpe lang nna module ni de parallel galaw ai. Module ni gaw series- hpe tengman ai busbar ni hku nna matut mahkai lu na re. Dai ni aten hta madung flavor masum gaw uphkang nga ai:

Laminated bus bar

0.8–1.5 mm magri mang n-gang law law hpe lapran kaw PET (sh) PI film n-gun n rawng ai hpe bang nna, n-gun ja ai-htu nna shrink-htinggrum da ai. 800 V platform shagu ngu na daram hta shanhte hpe lang ai gaw inductance 20 nH a lawu de hkrat mat ai majaw re. Porsche Taycan, Hyundai Ioniq 5/6, Kia EV6, Miwa 800 V mawdaw law malawng, yawng hpe laminated galaw da ai.

Galai shai mai ai busbar

0.1–0.3 mm n-gun n rawng ai magri mang n-gang ni hpe jahtum daw ni hta sha weld galaw da nna, lapran daw gaw n-gun rawng ai hku nga nga ai. Tesla gaw shawng na Model 3/Y pack ni hta lang nna, hpang de laminated de galai mat wa ai. Dai majaw, pack hpe chassis hte shinggrup ra ai shara hta naw law ai.

N-gun ja ai bar

10×50 mm (sh) 10×100 mm asan sha htu da ai magri n-gang ni hpe BYD Blade packs, n-gun atsam-htinggrum ai hka htung law malawng, LFP hpaga yumga-mawdaw pack law law hta naw mu lu ai. Manu n hkrat ai sha, jak hte galaw na matu loi ai, raitim, shanhte gaw thermal cycle hkying hkum loi mi na ai hpang, bolt hka htung grup yin hta n-gun yawm mat ai.

busbars

Battery pack kata na magri (shingra tara hku katsi ai, semi-hkap da ai):2.0-2.2 A/mm2 matut manoihkum tsup ai hku shim lum nga ai.
5 mm × 30 mm bar=150 mm2 → 300–330 A matut manoi, 600–700 A 10–30 s tup gap ai gaw arawn alai rai nga ai.
1.6 A/mm2 hpe quote galaw ai masha ni gaw, switchgear table ni hpe copy galaw nga ai; pack langai a kata kaw nbung lwi ai lam gaw teng sha grau kaja ai.

Laser hte htu ai: hkawhkam. Magri-de-magri (sh) magri-de-aluminum (nickel galai shai ai shim hte) gaw joint langai hta < 0.03 mΩ jaw ai.
10/M12 tin hpe ra sharawng ai + Belleville washers, 20–25 Nm. Loi ai hku daw jau ai.
Friction stir (sh) magnetic pulse welding: CATL hte kaga nkau mi, n-gun n rawng shi ai.

busbars

2021-2023 Model 3/Y (Panasonic 2170): 4-hpang × 1 mm × 38 mm n-gup magap ≈ 500 A matut manoi
2024 hkrang Y (LG 4680): 5-hpang × 1.2 mm × 42 mm
Xiaomi SU 7 800 V htinggaw: 6-hpang × 1 mm × 48 mm
BYD dazik / Qin jat DM -i: 10 mm × 80 mm ngang kang ai n-gang, ~350 A
Megapack 2 XL: 12 mm × 120 mm n-gang hte shinggrup da ai ngang kang ai n-gang ni, daw langai hta 1000 A matut manoi

busbars

90℃matut manoi magri mang ntsa kaw, 110–120℃aten kadun-hkap la mai ai, 130℃jan yang insulation film gaw myit tsang hpang wa ai. Pack law malawng gaw NTC ni hpe busbar ntsa kaw direct bang nna BMS gaw hawk zawn yu nga ai.

ISO 6469-3 – wan n-gun shimlam

ISO 12405 – pack chyam dinglik ai lam

IEC 62660-3 – cell hte pack bungli galaw ai lam/shim lum lam

1075 – Miwa EV pack spec (Miwa mung kaw dut ai rai yang)

UL 1973 (sh) UL 2580 hpe gat lawk hta hkan nna mari la mai ai.

Dai gaw grai law hkra rai nga ai. Hpa mi rai rai, ngai gaw datasheets ni hpe bai kahtap tsun na sha re.