Coin Cells Equipment

Coin cell assembly is where electrochemical claims are made or broken — burr-free electrode discs, a wetted but not flooded stack, and a uniformly crimped gas-tight seal are the prerequisites for any cycling data you intend to publish. This collection covers the bench-scale hardware used to build CR20XX-series cells (CR2016, CR2025, CR2032) and larger formats such as CR2450 and CR3032, organized along the three workflow steps that actually drive coin-cell quality: cutting the electrodes, dosing the electrolyte, and crimping the case.

Disc cutting determines whether you have clean, repeatable electrode geometry or microscopic burrs that pierce the separator and short the cell. Manual disc punches use a spring-loaded plunger and hardened steel die set (typical sizes 12, 15, 16, 18, 19, 20 mm); they are the right tool for low-throughput work and for thick or brittle coatings where operator feel matters. Pneumatic disc cutters drive the die with compressed gas to deliver consistent, high-velocity shear across hundreds of discs per session, and most pneumatic units are sized to operate inside an argon glovebox.

Electrolyte filling needs a pipette compatible with corrosive, volatile, moisture-sensitive liquids and with the viscosity range you are running, from carbonate-based formulations through ionic liquids. Both digital electronic pipettes and stepwise mechanical pipettes are stocked in glovebox-friendly configurations, with overlapping volume ranges from sub-microliter to one milliliter so single-cell dosing and small pouch top-ups can share a workflow.

Crimping is the step that locks the gasket geometry and therefore the long-term seal. Three crimper architectures are offered:

• Manual hydraulic crimpers — the laboratory workhorse, hand-pumped, with universal CR20XX dies and optional dies for CR2450 and CR3032.
• Pneumatic crimpers — gas-driven, fast, and free of hydraulic-oil contamination; preferred for in-glovebox assembly under Ar or N2.
• Electric crimpers with controllable pressure — touch-screen or dial-set sealing force in tons or psi, for series in which every cell must see an identical crimp profile (sulfur cathodes, MXenes, lithium-metal anodes).

If you are setting up a new coin-cell line, start with a manual hydraulic crimper and a manual disc punch; for higher throughput or sensitive chemistries, move to pneumatic or electric crimping and a pneumatic cutter. For the consumable hardware that goes into the cells, see coin cell cases & gaskets; for full assembly lines, see battery equipment.