Pouch cells live or die at assembly — every fold, seal, and weld locks in the cycle life you will measure months later. This collection covers the bench-scale machines that take you from cut electrodes and separator web through stacking, tab welding, packaging, electrolyte sealing, and formation. The lineup is sized for laboratory and pilot-line workflows, not gigafactory throughput, so footprint, dry-room compatibility, and recipe repeatability are prioritized over raw cycle time.
The equipment is grouped by the order of operations on a typical pouch line:
Electrode and foil preparation
- Roll-to-roll slitters divide a wide coated mother roll into narrower strips using shear (circular knife) cutting, the cleanest method for Cu and Al current collectors and standard cathode/anode coatings.
- Roll-to-sheet cutters convert continuous coated rolls or bare foil into single sheets at fixed dimensions, with synchronized unwind, traction, and cut-to-length stages to suppress burrs and edge waves.
Cell forming, stacking, and welding
- Pneumatic pouch forming machines punch the cup or pit into aluminum laminated film (ALF) at adjustable pressure — the standard choice for dry rooms and gloveboxes thanks to the clean, maintenance-light pneumatic drive.
- Z-fold automatic stackers index pre-cut cathode and anode sheets into a continuous separator web from a tension-controlled roll, producing aligned multilayer stacks for high-energy prototypes.
- Ultrasonic metal welders bond Al and Cu tabs to the multilayer foil stacks; touch-screen controllers store layer-count recipes so welds remain consistent across operators.
Sealing, electrolyte, and formation
- Heat sealers create the top (tab) and side hermetic seals on the ALF by melting the inner polypropylene layer at controlled temperature, pressure, and dwell time.
- Multifunctional vacuum sealers handle the post-electrolyte-injection seal, with vacuum-standing time for separator wetting and adjustable pump-down rates to prevent electrolyte boil-out.
- Heat press formation fixtures apply simultaneous temperature and uniaxial pressure during the first charge to drive uniform SEI growth and suppress gas pockets.
If you are bringing up a new pouch line, start with the forming and stacking machines that match your target footprint, then size the sealers and welders to the same cell envelope. For cylindrical or coin formats, see the sibling collections under Battery Equipment; for cell-internal materials, see Cathodes, Anodes, and Separators.
