Small-Sized Cells Cases/Jackets TRIZ Cases

Varying current collector heights create a direct axial heat path in a wound battery electrode assembly while limiting internal space waste.

A grooved cover plate boss improves casing contact during laser welding, blocking reflected beams that could damage the terminal assembly.

A single cell frame secures cylindrical cells against movement, cutting frame count while improving short prevention and heat dissipation.

A folded upper insulation board stays engaged during gas discharge, helping cylindrical batteries prevent plate release and hot gas escape.

A stepped lid separates filling, venting, and sealing zones to simplify cylindrical cell assembly while improving rigidity and fill consistency.

Localized winding-core shape deviations balance pressure in wound cylindrical cells, reducing stress, ion blockage, lithium plating, and shorts.

Separating side-wall film from weld coating simplifies battery shell insulation and protects attachment welds from corrosion.

An electrically isolated sleeve and terminal-integrated end caps simplify cell assembly, expand sleeve material options, and reduce cost.

Deformable bridge sections let a battery current collector plate adapt to off-center insertion while maintaining can contact for secure welding.

Asymmetric tab area and conductivity at one end of a cylindrical electrode assembly simplify polarity identification, speed shell assembly, and reduce short-circuit risk.

An integrated wall protrusion and groove connect same-end tabs, simplifying battery cell assembly while improving space use and connection reliability.

Roughened grooves on the battery connecting plate improve laser absorption at the weld zone, strengthening post joints and reducing detachment risk.

By balancing cathode loading, porosity, and tap density, this case prevents winding cracks that trigger side reactions and shorten battery life.

A protruding end-cap support keeps the tab clear of the fragile vent area, preventing vibration damage and premature battery cell rupture.

A dissimilar-metal fuse protrusion moves overcurrent heat outside the battery case, limiting electrolyte decomposition while protecting the cell.

A heat-resistant insulating member blocks laser seam-welding heat, protecting the separator while preserving weld sealing and strength.

Rising cell pressure triggers an inner pouch to release electrolyte, limiting resistance growth and extending pouch-cell cycle life.

A protruding filling hole adds buffer space for electrolyte and gas, reducing overflow contamination and pressure-related battery cell failures.

A low-density negative electrode region at 25% to 35% of winding turns limits localized surface pressure and keeps reactions and electrolyte distribution uniform.

A recessed terminal cover stabilizes energy-ray joining in secondary batteries by containing spatter and reducing deformation at the bus bar connection.

Flat plate battery terminals separated by an insulating plate improve tab insulation, design freedom, weldability, and heat control.

A press-fitted cap controls insertion depth to secure tab contact, avoid weld damage, and raise cylindrical cell energy density.

Blanking, bending, and welding form a thinner battery can with uniform wall thickness, lower cost, and more usable cell volume.

A preformed case notch collapses under external twist or pressure to short the electrodes quickly and reduce fire risk in compact wearable batteries.

Limiting protrusions and a stepped current collector prevent exhaust blockage, helping the explosion-proof valve open on time during thermal runaway.

A bent conductive member takes tab bending stress away from the active material layer, improving battery cell connection reliability and current flow.

Magnetic cap plate alignment counters vibration-driven misalignment in fast battery cell assembly, improving sealing force and yield.

Pre-impregnating the electrode assembly in a dedicated case prevents electrolyte shortage and supports cleaner tab welding in battery production.

Insulator protrusions fill the vent-cap void to strengthen cap assembly bonding, reduce weld cracking, and improve battery safety.

Local thinning at the weld interface increases friction and bonding strength between battery cell connecting elements, reducing loosening.

Multiple vent welding marks strengthen the cap-up joint, limiting porosity and separation under impact while maintaining battery sealing.

Mirror-guided imaging inspects cylindrical battery weld back-beads continuously, improving accuracy while cutting inspection time and cost.

Bent electrode flags redirect tab heat outward from the winding axis, improving thermal stability and battery cell lifespan.

A variable-thickness vent plate with rupture regions enables controlled pressure release in a secondary battery while maintaining structural strength.

A cylindrical housing spreads silicon-anode swelling forces more evenly, limiting deformation while preserving battery cell energy density.

Graduated sidewall thickness in a secondary battery case reduces cracking during bead and crimp forming while preserving rigidity and space use.

Multiple connection portions enlarge the electrode core contact area, improving current flow and limiting heat buildup in battery cells.

Insulator protrusions strengthen vent-to-cap binding, allowing rotatable assembly while reducing loosening and cracking in secondary batteries.

A non-overlapping adapter layout separates battery cell connection paths, reducing internal short-circuit risk while preserving space and stable current flow.

Multiple recessed lid contacts improve electrode-roll joining, cut assembly complexity, and preserve safe gas discharge in cylindrical cells.

Segmented uncoated electrode regions improve current collection, welding stability, and electrolyte flow in cylindrical batteries.

Independent terminal and bus bar layouts split wide battery cells into modules to cut resistance, improve cooling, and prevent bending.

A formed venting guide in the pouch case bottom concentrates pressure so gas is released before explosion without adding extra process steps.

Integrally molding the sealing plate and gasket stabilizes insulation width, reduces assembly tolerance, and protects the battery rim from impact and corrosion.

A 96%+ internal-volume housing ratio boosts battery cell energy density while preserving strength against impact and internal pressure.

Gradual sidewall thickness changes in a secondary battery case reduce molding cracks while preserving rigidity, space efficiency, and weight.

A magnetic cap with selective openings isolates same-side battery terminals, preventing shorting during batch processing and cleaning.

A protruding end cap with a matching recess improves battery cell alignment, lowers assembly friction, and protects sealing performance.

Symmetrical vent welding marks in a secondary battery cap assembly reduce laser-weld porosity and prevent joint separation under impact.

A protruding end cap with a stress-relief recess improves battery cell alignment, lowers fitting friction, and protects sealing performance.