Electric Machines TRIZ Cases

A series oil path and inclined spray channels improve stator core and end-winding cooling by increasing oil flow speed and surface coverage.

Tilted tool teeth inserted by a robot widen segment-coil layer gaps while avoiding contact with insulating films at the leg ends.

Press marks on U-shaped segment coil shoulders control pitch variation, reducing slot contact and easing insertion into the stator core.

Injection-molded busbars embed flat-wire motor solder joints to maintain insulation spacing, cut volume, and support motor miniaturization.

Misaligned oil passages across stator lamination layers expand oil contact area and flow rate, improving motor oil-cooling heat dissipation.

Controlled hot rolling and finish annealing keep non-oriented electrical steel strong while limiting iron loss for high-speed motor cores.

Internal baffles and guide grooves route liquid refrigerant through the stator core for direct cooling, lowering temperature and extending motor life.

Balanced Cu, Co, Al, Pr, and Nb tuning improves NdFeB coercivity while limiting sintering microcracks and preserving remanence.

Staggered lamination oil holes form spiral core passages that boost stator and winding cooling in high-power vehicle motors.

A case-side guide redirects cooling liquid along the motor axis to limit air-gap entry and reduce rotation resistance.

Short-pitch flat-wire stator winding lowers harmonic winding factor to reduce torque fluctuation, noise, and vibration in motors.

Series-connected symmetric coils place end terminals on opposite slot sides to avoid cross-layer conductors and reduce hairpin wire variety.

Zr precipitates in R-rich intergranular phases to raise magnet bending strength while preserving coercivity and magnetic performance.