E-Mobility

A flexible bus bar is an electrical conductor composed of multiple thin, laminated copper or aluminum layers that can flex and accommodate movement. In an electric vehicle, it connects high-current components such as the battery modules, battery management system (BMS), DC-DC converter, inverter, and charger.

A flexible bus bar uses laminated layers, so it bends, absorbs vibration, and compensates for thermal expansion and tolerance stack-up. A rigid bus bar is a solid conductor suited to static, straight-run power distribution. EV packs usually need the flexible type because cells expand and contract, and the vehicle vibrates constantly.

Yes. RPK Group defines the material, number of layers, cross-section, geometry, coatings, insulation, and connection interfaces based on your electrical and mechanical requirements, then validates the design in-house. It does not work from a fixed catalog.

A cable can add weight and bulk, and a standard busbar sized from a table is often oversized for weight or undersized for current and can add stress at the terminals. A custom flexible bus bar meets the platform's real current, thermal, vibration, and packaging requirements.

RPK Group uses stamping, bending, CNC multislide forming, laser welding, laser brazing on pads, insert placement, assembly, and coating on dedicated automated lines.

Beyond bus bars, RPK Group supplies compression, wave, torsion, and contact springs; stamped and bent parts; wire forms; and assemblies for electric and hydrogen vehicles, e-bikes, electric scooters, battery systems, power connectors, and chargers.

RPK Group designs the conductor to carry the target current with low resistance while absorbing vibration and thermal movement, so that stress is not transferred to the battery terminals and joints, thereby protecting fatigue life.