Cell-to-tab welding with vision-verified consistency, for cylindrical, prismatic and pouch cells. Built for scalable battery manufacturing, backed by the same process-control architecture as every RMA platform.
Every cell-to-tab joint passes through six control stages before the weld is logged. The same six stages run on every RMA platform — only the mechanics around them change.
Each joint located and classified by machine vision before energy is applied.
Mechanical pressing removes assembly tolerance at the joint surface.
Per-joint height captured so focal position can be set against the actual surface.
Beam focus adjusted per joint — tolerance-tolerant welding without sacrificing energy density.
Power profile tuned to material pair — copper, aluminium, nickel, layered stacks.
Process signals captured per joint. Audit-ready, exportable to MES/QMS.
Process windows validated in the Laser Application Center. Other material pairs evaluated case-by-case — bring us your stack-up.
| Joint / Material pair | Cylindrical (18650 / 21700 / 4680) | Prismatic | Pouch |
|---|---|---|---|
| Cu (Ni-plated) | Validated · primary | Validated | Validated |
| Aluminium | Validated | Validated · primary | Validated |
| Nickel strip | Validated | Validated | Case-by-case |
| Layered (Cu / Al) | Validated | Validated | Validated · primary |
| Steel tab | Validated | Case-by-case | Case-by-case |
Outcomes measured against incumbent processes (resistance welding, ultrasonic, mechanical fastening) on the same assembly. RMA does not publish numbers without a controlled trial.
Headline specs. Full data sheet, integration drawings and safety dossier available on request — sized to your production volume and integration environment.
Selected applications from RMA's case library — anonymised customer baselines vs. RMA process outcomes.
Beam shaping, AMB sources and focal correction on Ni-plated copper tabs.
Read the case →Single-sided cylindrical welding with vision-verified joint quality.
Read the case →Validated process windows for pouch cell tab interconnects.
Read the case →