Electric Devices TRIZ Cases

Ground is connected before intermediate battery terminals to prevent unintended voltage and rush current damage during battery pack assembly.

An in-wheel motor with battery and controller housed in the hub removes fuel use and driveline complexity for flexible agricultural unitractors.

A converter-driven relay path uses motor back-EMF to reconnect the battery, limiting voltage spikes and protecting inverter components.

An SCR crowbar closes the contactor-fuse coverage gap, triggering fuse isolation during intermediate battery fault currents.

Frangible inlet ports and serpentine channels route battery vent gas to block debris and droplets during thermal events.

Predetermined conductor and insulation break points create controlled cable failure after a crash to prevent electric shock and short circuits.

An electroactive polymer current blocker bends at a voltage threshold to open the battery pack switch before overcharge heating begins.

Dual identification data lets a battery ECU enable vehicle fail-safe monitoring only when needed, reducing reuse cost for EV battery packs.

Segmented charge-time tracking across voltage ranges improves EV battery SOH estimation accuracy while avoiding lengthy inspection.

Mode-dependent gate drive speed cuts switching loss during concurrent switching while suppressing surge voltage in a power converter.

Vertical stacking of traction battery packs between chassis plates cuts brackets and cables while preserving rigidity and saving space.

Peak-referenced voltage measurement improves earth leakage detection accuracy despite battery fluctuation, without complex filter circuits.

OCV-Q battery curves and per-mile energy use improve EV range prediction when SOC-based estimates are too linear and inaccurate.

Dead-time leakage current detection stops battery-group switching before hazardous contact, avoiding transformers while preserving efficient step-down power.

A dual battery layout uses a solid-state unit to absorb crash loads and shield liquid cells, preserving capacity and reducing thermal runaway risk.

Diodes and a shared switching device simplify multi-battery series and parallel reconfiguration, reducing mechanical switch failure risk.

Independent battery assemblies and buses let multi-motor vehicles redistribute current, maintain propulsion, and simplify battery maintenance.

A coupling capacitor and resistor divider compress relay-induced voltage swings, keeping earth leakage measurements in range for EV power systems.

A relay disconnects noisy compressor and cooling loads while a battery powers them, enabling more accurate fuel cell stack impedance measurement.

A shared bus speaker uses speech for arrival and non-verbal sounds for acceleration or turning, helping passengers distinguish guidance clearly.

A global calibration approach smooths EV battery model parameters across SOC and temperature, improving continuity, reliability, and calibration speed.

Comparing supply and component voltages detects high-voltage circuit faults without extra interlock hardware, simplifying EV fault location.

An arch-shaped reinforcement member routes the low-voltage connection assembly through its inner side to preserve battery pack strength under impact.

Housing high-voltage connections in a base plate holding portion helps prevent crush damage in collisions while keeping the battery pack compact.

Built-in cables, test ports, and fuses enable compact MSD connector access for safer high-current battery voltage and current measurement.

Short load pulses and resistance normalization enable fast traction battery SoH checks across temperatures and battery types without disassembly.

A dark current path and bypass circuit enable accurate make-and-break relay diagnosis even when an external charger prevents voltage drop.

Vehicle-use behavior is extracted and forecast with battery data to improve real-time battery SOH prediction accuracy.

An active-passive discharge branch speeds intermediate-circuit bleeding while reducing standby loss and supporting voltage symmetry in multi-level inverters.

Distinct parallel thermal fuse resistances let a controller identify an overheated battery module without adding sensors to each module.

Adaptive voltage scatter analysis detects battery cell faults early across changing load, aging, and operating conditions while reducing false warnings.

Controlled current, temperature adjustment, and voltage sensing reveal membrane and catalyst-layer degradation for more accurate fuel cell maintenance.

A beam-and-bracket reinforcement assembly redirects and absorbs crash loads to protect sensitive battery pack internals.

Switching power between batteries and controllers keeps vehicle software updates stable even under low charge and changing driving conditions.

Multiple VCUs and brake controllers create four braking command paths, with arbitration logic selecting a valid path during failures.

Selective low-voltage control disables identifiable battery cells after a crash, blocking improper battery reuse while preserving recoverable cells.

Adaptive battery voltage sensing cuts BMIC energy use by switching measurement modes with relay state, vehicle stop status, and voltage.

Tracking effective catalyst loss over time helps distinguish irreversible fuel cell stack degradation and adjust cooling and hydrogen pressure.

A detachable resistor-based tester links into the HVIL so traction voltage can be measured safely and the system shuts down when removed.

Reference output correction using altitude, coolant temperature, and degradation state cuts unnecessary fuel cell stop-restart cycles.

Voltage and internal resistance thresholds verify EV battery energy and power support with ASIL B-ready reliability and temperature compensation.

Sliding hooks and a locking tab secure sensors without screws, cutting installation time and simplifying replacement in tight spaces.

Instead of shutting down every rail, grouped PMIC outputs isolate only faulted channels so unaffected SoC power domains keep running.

AC coupling and a resistor divider detect vehicle ground faults accurately despite battery fluctuation, while avoiding costly high-insulation switches.

Aligned EV and HV display regions with distinct pointers and strip images make mode transitions clearer and reduce unexpected engine activation.

Resistor-protected live traction voltage measurement uses a detachable HVIL-linked interface to protect technicians and disable high voltage when removed.

Battery sample data is clustered by aging type so the right model can predict capacity more accurately under variable EV operating conditions.

Neural models fuse voltage, current, and temperature data to predict battery charge and subsystem health before mobility vehicle failures occur.

A sill-integrated duct and bursting elements direct battery gases outward during thermal events, protecting occupants and nearby components.

Integrated aerosol devices release a cooling cloud during battery thermal events to suppress heat propagation and protect traction packs.