Small-Sized Cells Cases/Jackets TRIZ Cases

A hollow sealing nail and air-permeable film vent excess battery pressure while blocking electrolyte leakage in a compact end cover assembly.

An asymmetric electrode edge layout reduces negative active material stress and peeling while preserving capacity and long-term battery reliability.

Controlled can diameter variation absorbs electrode winding expansion, improving capacity and cycle life while limiting can shape change.

A sealing spacer and integrated terminal structure restrain jelly-roll movement, protect coupling portions, and lower resistance in cylindrical cells.

A recessed end cap and cover plate protect the weld joint in a cylindrical battery cell, simplifying sealing and reducing oxidation-driven failures.

A thickened current collector section improves laser welding between the cap and cylindrical cell tab while reducing defects and heat impact.

Curved bent portions and a rolled seal edge reduce stress concentration in laminated batteries while keeping the fused portion compact.

Closely packed battery cells and a tuned D1/D2 cavity ratio raise traction battery space utilization and energy density without sacrificing assembly.

A scored battery case vents gas at a defined burst pressure without a through hole, improving sealing consistency and explosion protection.

Placing the pressure relief unit opposite the output electrodes steers thermal runaway discharge away from busbars and limits short-circuit ignition.

Oblique slots and protrusions in the bare foil zone cut flattening resistance, improve tab weld strength, and speed electrolyte injection.

Surface tension reduction in the flame arrestor and antifoam in the electrolyte cut aerosol carryover and salt deposits on cell vents.

A thickened current collector section improves laser cap welding in cylindrical cells, cutting false welds, penetration defects, and heat transfer.

By combining both electrode terminals in one cap assembly with a rivet terminal, this battery structure simplifies manufacturing and lowers leakage risk.

A recessed electrode terminal with an outward-bent side wall simplifies battery cell assembly while reducing stress concentration and deformation.

A tongue-shaped crimp covers the gasket to keep the battery top flatter, enable top-side electrode connections, and reduce wiring space.

A film-formed cylindrical cell case uses protruding sealing bodies to create a labyrinth path, extending cell length while preserving sealing.

A recessed side-wall exhaust passage redirects thermal runaway gas away from the terminal post while preserving battery cell internal space.

Different metals in the cap plate and electrode terminal help micro batteries prevent short circuits and vent gas during overheating.

Fastening a thermal barrier through module lifting holes keeps it in place during thermal runaway and delays heat spread to adjacent modules.

Identification marks are formed on the electrode plate's exposed core section to improve marking accuracy and keep layer spacing uniform in battery assembly.

Inclined cutouts in battery electrode uncoated portions enable easier folding, overlap, compaction, and welding despite curvature differences.

Bent contact sheet tabs self-center on the electrode-separator assembly, lowering internal resistance and easing insertion into the cell housing.

A thin hybrid coating on the battery can improves electrode insulation and heat resistance without sacrificing internal space.

Facing and overlapping thin plate electrode tabs lowers connection resistance in series-connected flat battery modules.

A layered thermoplastic-thermosetting gas discharge part relieves pouch-cell pressure while blocking moisture ingress and seal fusion.

Inward-folded sealing parts reduce pouch battery volume and heat blockage, while adhesive bonding keeps the folded edges stable.

A stepped adhesive layer between battery housings blocks moisture ingress, improves insulation, and extends service life in humid conditions.

A swelling tape absorbs electrolyte and expands at the wound core to cushion deformation and prevent internal shorts in cylindrical batteries.

A larger adjacent cavity buffers pouch-cell swelling under high temperatures, limiting internal pressure and reducing packaging failure risk.

Apertures through rolled battery electrodes create radial flow paths that improve electrolyte infiltration, capacity, and cycle life.

A reoriented battery cell layout exposes electrode terminals when the box opens, easing inspection while preserving secure fixation and cell density.

A plastic pad with an isolation portion covers and secures the busbar plate to prevent housing contact, improving battery stability and life.

Separated tab plates in wound battery tab rolls open electrolyte flow paths, improving liquid injection, welding reliability, and short-circuit resistance.

A box-mounted position-limiting member restrains battery cell deformation, replacing end plates to cut weight, cost, and assembly complexity.

A ring-shaped current collector wing absorbs height variation and improves laser welding stability between the electrode assembly and case.

A sloped battery case bottom improves electrode thermal contact, releasing rapid-cycle heat through both the bottom and side walls.

Laser-welded tab joints and a three-ring ceramic-metal seal cut internal resistance and improve leak-tight, high-capacity Li-ion cells.

Controlled Fe-Ni diffusion layer thickness and nickel loading help thinner battery can steel resist iron dissolution and corrosion.

A metal matching insert locks the output pole base to the end plate, limiting vibration movement and reducing fracture risk in battery modules.

Controlled Fe-Ni diffusion and nickel loading help thinner battery container steel resist iron dissolution while preserving corrosion resistance.

A split body-and-wing current collector plate improves welding alignment in cylindrical batteries despite height variation and wing positioning errors.

Welding the current collecting plate to the case and vent frees internal battery space while preserving structural strength and venting.

Multiple battery indentations fit different clipper fasteners, while a resilient retainer prevents accidental drops during removal.

A thickened inward-bent housing edge enables conductor-rail welding while protecting the annular seal in cylindrical cell arrays.

Separated tab exposure and non-overlapping protective members raise battery capacity while preventing electrode deformation during cycling.

An arc-shaped cap-up protrusion creates stack gaps for uniform electroplating, reducing plating defects, corrosion, and weld issues.

Residual heat after flame suppression can reignite adjacent cells, so this pack uses insulating or endothermic layers plus an internal extinguisher.