Electric vehicle battery packs run at 400–800 V and hundreds of amps. Laminated busbars keep those connections compact, low-inductance and reliable.
Where Busbars Are Used in an EV Pack
- Module interconnections — multi-terminal laminates joining cell groups in parallel and series
- BMS sense taps — paired stud terminals giving consistent measurement points for cell monitoring
- Pack-level joints — high-current links to the contactor box and power distribution unit
- Cell-level links and fused sections — thin laminates with integrated fuse elements
Why Laminated, Not Cable
Cable harnesses inside an EV pack occupy volume, add loop inductance and rely on hand routing. A laminated busbar replaces dozens of branches with one insulated part whose terminals arrive pre-mounted — faster pack assembly, no wiring errors, and a tighter current loop that reduces voltage drop under load steps.
- Compact — multi-layer construction packs parallel paths into one thin assembly
- Low inductance — conductor spacing and layer orientation keep loops tight
- Insulated and sealed — full edge sealing for high-voltage creepage requirements
- Repeatable — tooled terminals, identical every time, no assembly variation
Engineering Notes
- Dielectric selection follows your platform voltage class — tell us 400 V or 800 V at quotation
- Conductor cross-section is sized against continuous and peak current, not nameplate current alone
- Terminal geometry is matched to your module studs, contactors and mating buswork
- Thermal cycling and vibration profiles are reviewed during DFM before tooling