Precision Metal Components for EV, Battery & Energy Systems
Electric vehicle drivetrain and clean energy systems require stamped metal components with dimensional consistency that directly affects system-level performance. Tolerance variation that might be acceptable in general industrial applications compounds through motor stacks and electrochemical assemblies in ways that reduce efficiency, accelerate degradation, or shorten service life. Brunk applies the same precision stamping capability and process discipline developed for medical device and semiconductor manufacturing to EV and clean energy component production.
Rotor Stacks to Battery Interconnects, Stamped to EV Tolerance
We stamp the components that carry an EV drivetrain and clean energy system from cell to motion. Rotor and stator laminations, including amorphous metal core material, a rare, ultra-thin alloy that cuts core loss and heat generation versus conventional electrical steel, letting small electric motors run cooler, spin faster, and shed weight without giving up torque. Flow-field geometry for bipolar plate fuel cell stacks, stamped to the channel tolerances that keep gas distribution even and stack efficiency where it should be. Battery interconnects and busbars held to the conductivity and fit tolerances that don't drift across a pack of thousands of cells. And precision terminals stamped so every crimp and contact point performs the same on cell one and cell ten thousand.
EV Rotor & Stator
Electric motor performance is substantially determined by the dimensional quality of its lamination stack. Rotor and stator laminations must be stamped to consistent thickness, precise slot geometry, and flat stacking surfaces, because variation at the individual lamination level accumulates through the assembled stack. Brunk produces precision-stamped rotor and stator laminations to the tolerances that motor stack assembly requires.
Bipolar Plate Fuel Cell
Bipolar plates sit at the core of the hydrogen fuel cell stack, separating individual cells. The combination of fine feature geometry, thin gauge material, and electrochemical service requirements make bipolar plate stamping among the more technically demanding work in clean energy manufacturing. Brunk produces precision-stamped bipolar plates for hydrogen fuel cell applications.
Battery Interconnects
Precision-stamped cell contact plates, bus bars, and interconnect strips for cylindrical, prismatic, and pouch cell pack configurations. Material and geometry optimized for the application.
Precision Terminals
Precision-stamped pin and socket terminals for automotive wiring harnesses. Tight barrel tolerances for a crimp that stays reliable, plating options for whatever environment the harness lives in. Built to standard connector housing specs. If your harness calls for it, we stamp it.
Materials
Stainless steel, titanium, MP35N, copper alloys, red metals, and other conductive and structural alloys suited to sterilizable, high-cycle surgical and endoscopic applications.
Rotor lamination geometry, fuel cell flow-field channels, and battery interconnect conductivity paths all carry direct tolerance dependencies into system-level performance, stack-up error in any one component propagates into motor efficiency loss, uneven gas distribution, or increased contact resistance across a pack. Brunk holds these tolerances through fixed tooling, repeatable die sets, and in-process dimensional verification, the same controls we run for medical device and semiconductor components under ISO 13485. That process discipline transfers directly to EV and clean energy production: consistent part-to-part geometry at volume, with the traceability to back it up. If your program is moving from prototype to production, we're built to hold spec at scale.
