Small-Sized Cells Cases/Jackets TRIZ Cases

A lower-density center region in the negative electrode improves electrolyte impregnation and cycle life in taller rechargeable lithium batteries.

Bent bare-foil welding with extended, layer-controlled weld marks lowers battery DCR while limiting weld-through and separator damage.

Direct cell assembly into a partitioned pack housing with thermal resin shortens heat paths, cuts parts, and improves battery pack productivity.

A 20% to 50% seal compression range helps battery terminal interfaces resist heat-driven shrinkage, rebound, and leakage.

Segmented uncoated electrode tabs spread current, lower resistance and heat, and improve electrolyte symmetry in cylindrical cells.

Bolt-fastened battery terminals with an insulating member improve housing sealing strength, reduce leakage risk, and avoid deformation.

A sulfonate-coated cathode and low-expansion silicon anode reduce reaction resistance and swelling while preserving battery capacity.

A tapered positive electrode pellet near the case groove cuts impact transmission, suppresses cracking, and preserves alkaline battery discharge performance.

Staggered current collector connections and stress-relief holes absorb sealing bend stress to prevent tab weld failure in battery cells.

A low-friction non-facing region on the wound negative electrode relieves local stress, suppressing deformation and internal short circuits.

A three-region carbon density layout improves electrolyte access in the electrode center, helping taller lithium batteries retain cycle life and capacity.

A seal ring isolates the battery pole and top cover interface to block metal debris, improve sealing, and prevent short circuits.

A flat current collector plate frees internal cell space and shortens the current path, improving cylindrical battery capacity and energy density.

A fluorine resin gasket and riveted terminal enlarge the current path, cut internal resistance, and prevent battery can short circuits.

Peripheral notches in the bent housing connection portion absorb rolling-groove strain, protecting tab welds and electrical contact stability.

A stepped terminal plate with a protruding tab connection preserves compact battery packaging while preventing shorts and improving pin alignment.

A two-layer graphite anode and thin porous separator improve electrolyte impregnation while preserving battery capacity and fast charge-discharge cycling.

A metallic finishing tape at the winding end stabilizes the electrode assembly and adds tab conductivity to improve cell performance consistency.

An internal conductive partition links electrode assemblies in series, cutting external tabs, saving pack space, and raising battery energy density.

An asymmetric cathode loading gap matched to winding core diameter helps suppress lithium precipitation and improve cycle life in wound secondary batteries.

A dual-layer cathode with a 102%–104% loading ratio limits material precipitation during cycling to improve capacity retention and reliability.

A separable connecting piece moves the terminal to open the vent path, improving battery pressure relief and reducing rupture risk.

A locally thickened casing zone near the end-cover weld spreads expansion stress and helps prevent fatigue cracking in battery cells.

Thermally deforming metal sensors in a battery matrix pinpoint overheated Li-ion cells with simpler, lower-cost detection circuitry.

Different case regions balance gas-driven pressure on the electrode assembly, reducing deterioration and extending battery life.

Z-shaped inter-bus bars and spaced terminal groups help prevent internal short circuits during battery pack thermal runaway.

A protrusion-and-through-hole crimp joint replaces welding in battery cells to lower resistance, reduce heat concentration, and stabilize terminal contact.

A tapered terminal cap guides high-temperature gas to the bottom vent, improving discharge efficiency when internal pressure rises.

Wall notches in a battery current collecting plate absorb shocks and vibrations, improving cell rigidity and reducing short-circuit risk.

Acute-angle welds in the current collector cut internal resistance while limiting separator melting and welding splatter in cylindrical cells.

Recessed breaking lines in a battery cap create a controlled vent path that relieves internal pressure without structural collapse or blocked gas discharge.

A two-part battery pole injects electrolyte through one pole, then seals the hole with the second pole to cut parts and save cell volume.

A vented end cap positions the explosion-proof valve opposite a welding groove to release excess gas and avoid false triggering.

Controlled rounded-corner radius and case depth reduce wrinkling and cracking in integrally formed battery cell cases while preserving energy density.

A clamped elastic contact element replaces welded cell links, enabling non-destructive battery repair while maintaining stable contact.

Protrusions, wings, and an insertion groove create multi-point sealing in the battery housing to prevent electrolyte leakage on uneven surfaces.

Recessed side plates and orthogonal wall plates stabilize individually wrapped cylindrical cells, limiting deformation while keeping the module light.

A concave insulating member and shielding segment buffer electrode expansion to preserve explosion-proof valve burst pressure in secondary batteries.

A sampling member placed between adjacent battery cells collects signals without taking extra pack space, improving density and connection stability.

Staged interim cup forming and ironing smooth material flow in rectangular battery cans, reducing cracks, deformation resistance, and instability.

An annular protrusion and laser-welded stepped face strengthen the cap plate-case joint, improving sealing under vibration and pressure.

A Z-shaped busbar and frame-beam assembly keeps battery cells uniformly oriented, improving thermal separation, wiring simplicity, and part replacement.

A breakable bridge in the battery cap cuts off overcurrent while a vent releases gas pressure to prevent overheating and explosion.

A conductive electrode edge replaces tabs in a rolled cell, cutting ohmic resistance and simplifying battery cell manufacturing.

A flat current collector plate replaces folded structures to free electrode core space, increasing cell capacity and battery pack endurance.

Elastic spacer protrusions enable interference fitting between the case and cap assembly, improving insulation, coupling stability, and assembly.

A pressing welding jig improves collector plate contact and blocks spatter from entering cylindrical secondary batteries during laser welding.

UV glue sealing and a central cutting part keep curved pouch battery cell seal width uniform and block electrolyte leakage and moisture ingress.

An overlapping dual-layer insulating film secures the cell surface and tab end to prevent separation, insulation failure, and energy density loss.

A resin layer reinforces overlapping tab roots to prevent deformation, improve terminal bonding, and reduce resistance and short-circuit risk.

Circumferential limiting structures keep a battery terminal-post sealing ring from shifting or overturning during molding, reducing leakage.

A protruding insulating member separates battery connection sheets from the metal housing to prevent leakage and absorb external impacts.

A front-access battery module preserves isolation distances in breaker control units, enabling safer replacement without service interruption.

A taped current collector shields tab weld backs from metal debris, reducing internal short-circuit risk without sacrificing battery capacity.

A rupture-line explosion-proof valve and simplified cap structure enable timely gas release and lower contact resistance in full-tab cylindrical cells.

An insulating spacer and inner insulating part keep the current collector separated from the case to prevent rivet-terminal short circuits.

Cut bus bar branches help equalize voltage and temperature distribution, improving average cell sensing and stable battery pack output.

A movable pressing jig supports the pouch cell during high-rate electrolyte injection to prevent separator folding or peeling.

A rail type socket links cylindrical cells in series and parallel while removing separate insulators and adhesives to cut module assembly time.

A high-elongation insulating layer protects exposed electrode regions from cracking under trapped foreign matter, reducing internal short risk.

A recessed electrode terminal uses two sealing members to secure the liquid injection hole, reducing electrolyte leakage and seal damage.

An integrated fuse wire and protector isolates adjacent battery sub-modules during overcurrent while shielding terminals from short-circuit exposure.

External laser welding of a protruding connection terminal cuts spatter and heat exposure while stabilizing battery cell terminal joints.

A thicker lead film near the electrode assembly and a bent pouch case strengthen sealing and reduce venting during heat and cycling.

A hollowed insulating cover leaves part of the cell housing exposed for direct compression strip joining, improving battery assembly stability.

A self-healing injection port releases battery gas at lower pressure, then reseals the pore for safer electrolyte filling and stable cell operation.

Swelling tape on the outer uncoated electrode tab expands with electrolyte to maintain case contact, lowering internal resistance and stabilizing the jelly roll.

Localized thick welding regions and thinner plate areas cut battery thickness and weight while preserving strength and welding quality.

An annular spring makes radial contact with an inserted conductive post, maintaining electrical connection under vibration while allowing quick removal.

A recessed terminal groove contains weld spatter and heat, protecting the electrode assembly while maintaining low-resistance battery connections.

Uniform reel-to-reel cap-up plating and a bent safety vent reduce welding defects and block moisture at unplated battery edges.

Moving collector welding outside the case with a groove-filled terminal reduces misalignment, impurities, and heat exposure in cylindrical cells.

Controlled Ra and Rz roughness at the battery can-cover interface improves adhesion, blocking moisture ingress and tracking-related shorts.

An integrated spring bus bar connects multiple cell terminals with fewer parts, improving assembly, disassembly, and battery pack recycling.

A protruding gasket supports the current interrupt device during crimping and beading, preventing cap-up and vent deformation.

An outer-can locking part fixes the upper insulating plate in a cylindrical battery to prevent dislocation and internal short circuits.

A dissolvable blocking layer protects the battery case adsorbent during assembly, then exposes it in electrolyte to reduce swelling and explosion risk.

Opposed folding of battery core sealing portions cuts package thickness and space use while improving stability and lowering breakage risk.

A projection through the terminal plate hole aligns the current collector before welding, improving contact consistency and reducing weld defects.

Using different metals for the cap plate and terminal plus a meltable bonding layer improves micro battery safety, venting, and energy density.

A segmented electrode tab with rotatable joints and a buffer member absorbs mechanical stress to protect the electrode assembly in secondary batteries.

An insulated protection circuit helps cable-type batteries resist overcharge, overdischarge, moisture, and external impact while staying flexible.

Interlocking concave and convex holder surfaces anchor cylindrical power storage devices against prolonged vibration and aid hot-gas discharge.

Controlled internal pressure in a rigid lithium-ion cell stabilizes the SEI, limits cracking and dendrites, and preserves electrode contact.