Small-Sized Cells Cases/Jackets TRIZ Cases

A stepped insulator around a rivet terminal improves can insulation, limits assembly deformation, and frees space for higher battery capacity.

Varying groove widths in a sealed electrode stack speed electrolyte permeation while preserving active material coverage and battery capacity.

Balanced electrolyte swelling in EVA sealing tape fills gaps, prevents electrode assembly movement, and adds flame retardancy.

Integrated tack and seam welding joins the cap, sidewall, and collector plate in one process, saving cell volume and limiting separator heat damage.

Dual through-holes let electrolyte enter while gas escapes, improving impregnation speed and stable manufacturing of high-density prismatic batteries.

Positioning grooves and protrusions stabilize sealing plates during welding, improving battery case sealing while limiting heat on insulators.

Electrolyte additives with lithium imide salt and controlled can volume suppress high-temperature resistance growth and improve cycle life.

A triple laser weld joins the cap, current collector plate, and sidewall in one step to cut assembly cost and prevent laser damage inside the cell.

Elastic contact between the housing bottom plate and blank foil removes welding burr risks, improves connection reliability, and cuts off current at high temperature.

A concave-convex current collection plate improves electrode tab compaction, weld positioning, and short-circuit prevention in secondary batteries.

Integrated current collection tabs and ultrasonic welding cut resistance, preserve battery roundness, and support safe pressure venting.

A high-melting PEG additive near the negative electrode terminals absorbs short-circuit heat and limits battery temperature rise.

A central hollow tube brings fluid cooling into the hottest part of large-format battery cells, improving heat dissipation during fast charging.

A recessed-head terminal rivet enables external welding, fluid-tight sealing, and electrical insulation in cylindrical secondary cells.

Insulating raised portions and conductive depressions guide uniform Li plating, improving anode reversibility while limiting dendrite growth.

A fuse built into the electrode tab disconnects Li-Ion cells under high current, voltage, or heat, avoiding CID mis-triggers tied to gas generation.

A lithium strip along the container wall offsets high-temperature anode self-discharge and improves discharge yield with less active material.

Pre-formed U- or V-shaped current collector edges enable controlled folding, lower internal resistance, and reduce short-circuit risk.

Bent and overlapped electrode tabs create a flat laser-welding surface that lowers internal resistance and improves high-rate battery production stability.

Protruding terminals on both sides let battery cells connect without bus bars, cutting resistance and simplifying module assembly.

A separator inner non-contact region preserves electrolyte at the wound core, improving quick-charge cycle life in compact cylindrical cells.

A coated gas-discharge hole relieves pouch-cell pressure while blocking electrolyte leakage, moisture ingress, and hole corrosion.