Delta-Coupled Motor Winding Layout With Alternating Phase Pins

The patent transitions from a planar arrangement to a three-dimensional layered arrangement by distributing phase inputs and outputs across multiple layers (first layer and second layer). This dimensional change allows traces to connect phases without intersecting, as connections can now proceed vertically between layers in addition to horizontal connections within layers, thereby reducing interconnector complexity while maintaining electrical connectivity.

The patent segments the phase connections by separating phase inputs and outputs into different layers. Specifically, first phase inputs are in the first layer while second phase inputs are in the second layer, with corresponding outputs arranged similarly. This segmentation prevents trace intersections and simplifies the interconnector design by allowing independent routing of traces for each phase without crossing conflicts.

The patent uses the vertical dimension (layer stacking) to resolve the conflict between achieving phase connections and minimizing axial length. Instead of forcing traces to cross horizontally (which increases axial dimension), the patent routes connections through different vertical layers, allowing phase inputs and outputs to be connected without increasing the axial footprint of the stator.

The patent implements a nested arrangement where multiple phase connections are embedded within different layers of the interconnector structure. The first layer contains certain phase inputs and outputs, while the second layer contains complementary phase inputs and outputs, with traces nesting through these layers to achieve connections without external expansion in the axial direction.