Battery Cutoff Switches TRIZ Cases

A split inner-outer housing structure resists heat and impact during conductor cutoff, limiting cracks and arc gas leakage after actuation.

Silicone-based chamber walls improve post-opening insulation resistance in a pyrotechnic circuit breaker while limiting leakage currents.

Guided hot gas is driven through a wire-mesh arc chamber to improve high-current interruption and insulation after conductor severing.

A fused busbar breaker combines passive overcurrent and active external triggering in one punch-mounted igniter to cut current and extinguish arcs.

A pre-charged capacitor and diagnostic monitoring keep pyrotechnic battery disconnects working during crashes when the main battery drops out.

A shearable conductor and insert layout lets a small actuator open high-current paths quickly while reducing arc severity and switch bulk.

Multiple cut points create symmetrical free strands that stabilize conductor separation, reduce arcing, and improve switch reliability.

Precharged capacitors and a MOSFET stage deliver fast, reliable current pulses for simultaneous pyrofuse triggering in energy storage systems.

A pyrotechnic plunger opens the contact bridge in under 2 ms to stop extreme overcurrent and prevent contactor re-closure.

A threshold-triggered fuse connection lets a pyrotechnic breaker interrupt both low- and high-intensity currents while preventing arc reestablishment.

A pyrotechnic separator redirects fault arcs to a melting conductor, enabling reliable HV current interruption and fire prevention in vehicles.

Staggered conductor break points and gas-driven actuation improve abnormal-current interruption while reducing arc generation and voltage.

A pyrotechnic charge drives the magnet anchor to open contacts fast, extinguish arcs, and block HV re-energization after a short circuit.

A smart mid-point disconnect isolates faulty battery strings in airborne multi-string packs, limiting short-circuit energy without heavy fuses.

Abnormal current directly drives the interrupter startup path, cutting vehicle power faster without ECU crash determination delays.

A gas-driven pin cuts staged separable conductor sections to improve circuit interruption, breaking strength, and arc quenching under overcurrent.

Abnormal current directly drives the auxiliary startup path, cutting interrupter activation time without waiting for crash processing.

Internal reinforcing frames and a cylinder strengthen the resin housing, enabling a smaller high-current circuit breaker without added bulk.

A resin breaker housing reinforced by a metal cylinder and frame cuts size while preserving strength and venting combustion gases to extinguish arcs.

A precharged capacitor and health monitoring circuit keep pyrotechnic HV battery disconnect activation reliable during abrupt power loss.

Gas from a squib drives rapid contact separation to stretch and extinguish arcs while increasing isolation between high and low voltage sides.

Parallel pyroswitches use explosive actuation to interrupt high-current DC circuits without arcing, even under dynamic loads and crash conditions.

A pyrotechnic charge drives the magnet anchor to open contacts in milliseconds, cutting short-circuit arc energy and preventing reconnection.

An interference-fit link between fuse lugs cuts contact resistance while enabling actuator-driven, permanent high-voltage disconnection in vehicles.

A manual low-voltage trigger backs up automatic pyrotechnic battery disconnects, ensuring HV bus isolation after severe vehicle impacts.

Additional cavities and channels divert plasma after conductor breakage, preserving piston speed and reliable high-voltage cut-off.

Pre-switching the load circuit and mechanically locking the contact stud prevents arcing, unintended opening, and contact wear in high-voltage switching.

Using the high-voltage battery itself to trigger a pyro fuse improves crash disconnection reliability while removing low-voltage supplies and capacitors.

Insert conductors and shearable sections let a smaller actuator open high-current paths quickly while increasing arc resistance and lowering switch size.

A switch module cuts motor voltage quickly after airbag deployment, improving EV safety while preserving backup low-speed operation.

Built-in current sensing, control, and pyrotechnic disconnection cut interconnection resistance, energy loss, and assembly complexity.

Dynamic fuse isolation prevents premature wear and energy consumption while maintaining high switching capacity.

A pyrotechnic circuit breaker integrates the separating element with the housing to ensure precise positioning for rapid conductor severing.

A disconnecting device moves a dielectric bolt into the gap to extinguish arcs, preventing temporary electrical connections during high-voltage disconnection.

Orthogonal cut portions joined by resin pins enable conductor cutting without fragile notches that cause heat build-up.

Embedded metal cylinder in resin housing maintains structural integrity for compact electric circuit breakers without increasing mass.

A multi-stage excitation protection device uses segmented impact mechanisms to break conductors and extinguish arcs in electric vehicle battery packs.

Pre-positioned cutter block engages gas pressure to cut conductive material, eliminating complex alignment adjustments.

A pyrotechnic disconnector uses an insulating retention element to secure the separating piece after triggering.

A passive triggering mechanism activates pyrotechnic features within electrical switching devices to interrupt current flow.

A bi-material plastic housing overmolds a metal reinforcement core to combine injection molding flexibility with high mechanical strength.

A circuit breaker uses a rod-like projectile aligned with a conductor cut to interrupt current flow.

A pyrotechnic switch welds conductive elements to electrodes via explosive force.