Small-Sized Cells Cases/Jackets TRIZ Cases

A spiral-wound electrode assembly uses a defined length ratio and same-direction end bending to fit curved devices while maintaining capacity and resistance stability.

A flange-covered terminal and venting protrusion help ultra-small rechargeable cells prevent shorts, terminal damage, and pressure buildup.

A core member and inter-electrode space suppress electrode buckling and fracture while preserving electrolyte contact and capacity retention.

Same-side opposite-polarity tabs and an integrated end-cap connection free cell volume, raising energy density without extra collectors.

A sub-notch beside the main vent notch guides rupture at the intended pressure while reducing cracking and deformation in secondary batteries.

Placing opposite-polarity tabs at one end saves cell space, while an insulating member separates and stabilizes them against shorts and vibration.

A tab-free end-face area and aligned collector opening let electrolyte enter the wound cell faster without sacrificing sealing.

Bent uncoated electrode ends improve cylindrical battery current collection, lowering resistance and heat without blocking electrolyte injection.

An integrated collector plate fuse melts under short circuit or overcurrent to cut current quickly while avoiding a separate battery safety part.

A separate high-current path through the battery housing triggers thermal runaway quickly with lower energy and less terminal disturbance.

Directly secured cylindrical cells span opposing frame rails to carry vehicle loads, improving force distribution without overlapping cross-members.

Multiple insulated electrode stacks are series-connected in one cell to reach higher voltage with fewer cells, less pack mass, and less volume.

A ringed outer protrusion moves the battery weld zone away from the cell, improving top cover sealing while limiting heat damage and bulging.

A reinforced inner electrode segment helps wound battery cells resist central collapse, reduce lithium precipitation, and extend service life.

Localized dinitrile concentration on the wound electrode surface suppresses metal elution without raising initial resistance.

Elastic pre-compression of battery terminals during insert molding blocks resin burrs despite terminal dimension variation.

A stacked PTFE vent inside a pouch cell releases excess gas without enlarging the case, while blocking moisture and foreign matter.

Expanding microparticles trigger early battery cell disconnection below 150°C, helping stop thermal runaway propagation before failure escalates.

Interlocking barrier sheets form a thin insulating grid around cylindrical cells to block thermal propagation without adding bulky potting.

Ultrasonic joining secures a two-piece secondary battery case without gaps, cutting deep-drawing waste while improving seam strength and leakage resistance.

Outward-bent non-coated electrode tabs shorten conductive paths while avoiding contact with the negative electrode in cylindrical batteries.

A stepped sealing plate with thin and thick annular zones distributes stress, preserving sealing reliability in smaller power storage devices.

A recessed end cap with a sloped arc-striking surface shifts weld defects away from thin sealing areas to preserve battery cell airtightness.

A separated vent wall, cooling wall, and collection cavity redirect thermal runaway emissions to protect the thermal management component.

Pre-assembled welded connectors simplify battery top cover terminal fixing while improving sealing, torque stability, and production efficiency.

Gas pressure, temperature, and composition during cell formation are used to score battery quality without destructive SEI analysis or long inventory holds.

A two-angle tapered swaging die stabilizes battery terminal joining by spreading strain and reducing fracture risk at the joined portion.