Small-Sized Cells Cases/Jackets TRIZ Cases

Ultrasonic pressure joining expands a flange into a concave terminal seat to improve dissimilar-metal strength and electrical conduction with less deformation.

A central conductive rod supports the jelly roll, lowers current resistance, improves cooling, and enables safe venting in cylindrical cells.

Diagonal upper and lower covers create a universal battery cell holder that fits varied cylindrical cell layouts with strong fastening.

Opposed vent plate notches and a bridge structure enable controlled pressure release, limiting battery deformation and structural stress.

Rounded positive electrode edges and sealing portions disperse stress in jelly-roll cells to prevent cracking, disconnection, and short circuits.

A proportioned winding center hole and explosion-proof valve region improve thermal runaway venting while preserving cover plate strength.

Same-direction electrode tabs and 3D collector plates shorten current paths, lower resistance, and free space for a larger cylindrical cell assembly.

Narrow laser-welded metal foil seals placed close to the cell stack improve hermeticity and energy density in sub-1 mm electrochemical cells.

A hydrophobic gas discharge layer vents internal pouch-cell gas while blocking electrolyte, moisture, and corrosion at the punched hole.

A cap vent with an exposed rupture notch speeds internal gas release while a gasket prevents short circuits, improving battery safety.

An extended insulating film overlaps the thinner outer turn of a wound electrode assembly to reduce diameter difference and lithium plating.

Pre-bent battery cell tabs improve face contact during stacking, reducing air gaps, simplifying rolling, and strengthening welds.

A recessed electrode surface under the winding tape absorbs charge-discharge expansion and prevents tape-edge damage in cylindrical cells.

A bent extension on the winding-fixation tape stays between the can groove and electrode body to prevent short circuits during movement.

Cap plate protrusions and a high-resistance charging member reduce bending, suppress alloy formation, and absorb short-circuit energy.

Dual protrusions and a slit enable same-position re-welding on cylindrical battery terminals while reducing current leakage and scrap.

A recessed cell bottom and elastic connection member enable stable series connection between cylindrical battery cells without welding or extra parts.

An anchor element secures the winding core in a spiral energy storage cell to prevent projectile ejection and limit thermal propagation.

Overlapped bus bar plates and sensing plates fixed by adhesive and rabbit-ear features reduce wire breakage under impact and vibration.

Opposed grooves on both sides of a battery cell vent create a thinner weak section that ruptures earlier to release pressure and lower fire risk.

An outward-bent terminal flange and upper plastic member create a flush battery top while increasing insulation, sealing, and connection stability.

A side-wall pressure relief region redirects battery cell venting away from neighboring cells, reducing secondary damage during overpressure.

A rupture disk with a protruding tab joint uses rotational shear to disconnect the current path during battery abnormalities with fewer parts.

A spring-loaded center pin creates direct tab-to-can contact in a button cell, removing welding steps, lowering defects, and improving safety.

A bent lead with segmented geometry and local hardness variation lowers resistance while maintaining tab connection under battery vibration.

An impermeable adhesive tape and nickel tab plate block electrolyte and moisture contact, reducing corrosion and short-circuit risk.

A split anode lead and optimized cathode lead position shorten current paths, lowering internal resistance while preserving electrode assembly roundness.

Through channels in the inner plastic drain trapped electrolyte at the battery terminal, reducing housing corrosion while preserving insulation.

A vent-to-connecting-piece diameter ratio helps prevent valve blockage, enabling fast battery pressure release and limiting thermal diffusion.

A beading and crimping current collector strengthens housing coupling while lowering jelly-roll resistance and supporting higher energy density.

A flat flange welded to the lid removes beading grooves, simplifying cylindrical cell assembly while maintaining seal reliability and venting.

A tuned pressure relief groove balances fatigue resistance in normal use with timely venting during thermal runaway to reduce explosion risk.

An S-shaped conductor with an integrated fuse interrupts excess current in tabless battery cells, improving protection without added complexity.

Protective graphene and adhesive carbon layers enable TAB-less cylindrical Li-S cells to curb polysulfide shuttle, delamination, and lithium erosion.

Balancing cyclic carbonate and an unsaturated inorganic additive improves electrolyte wettability, heat stability, fast charging, and cycle life.

A sandwiched ECU and battery terminal bracket simplifies front-block assembly while improving vibration resistance and water protection.

Cut-groove electrode segments spread current collection, ease welding, and keep electrolyte passages open in cylindrical batteries.

A stepped welding block separates tab connection from shell welding, improving positioning, lowering contact resistance, and protecting the electrode assembly.

Housing recesses nest adjacent cell terminals, removing confluence bars to save space, raise energy density, and simplify battery assembly.

Through channels in the battery terminal inner plastic drain trapped electrolyte, limiting corrosion while preserving terminal fixation and insulation.

A raised thick cap portion suppresses welding sputter and keeps debris off the gasket, improving battery sealing stability.

An extending insulating member keeps widened current collector tabs from contacting the sealing plate, preserving insulation for higher battery output.

A cover protrusion and raised current collector create gas storage space for smoother exhaust, lower pressure spikes, and better vibration support.

An inclined lower plastic around the terminal post guides trapped electrolyte away from the housing to limit corrosion and improve battery safety.

Controlled end-vent ejection of the electrode assembly relieves high internal pressure and helps prevent side rupture and flame spread in battery packs.

A core insulation member supports the wound electrode center after electrolyte injection, preventing collapse and improving battery reliability.

Press-fitted dual cans act as battery terminals while an insulator improves sealing and enables pressure-triggered electrical disconnection.

A single-end tab layout uses an insulating end cover to connect both electrodes, saving axial space and improving volumetric energy density.