US 12,463,510 B2
Needle winding for high density copper fill internal tooth electric motor stator and method therefor
Mark Talmer, Pepperell, MA (US)
Assigned to Persimmon Technologies Corporation, Wakefield, MA (US)
Filed by Persimmon Technologies Corporation, Wakefield, MA (US)
Filed on Mar. 30, 2023, as Appl. No. 18/128,636.
Claims priority of provisional application 63/325,173, filed on Mar. 30, 2022.
Prior Publication US 2023/0318412 A1, Oct. 5, 2023
Int. Cl. H02K 1/18 (2006.01); H02K 1/14 (2006.01); H02K 15/026 (2025.01); H02K 15/043 (2025.01)
CPC H02K 15/026 (2013.01) [H02K 1/148 (2013.01); H02K 1/18 (2013.01); H02K 15/043 (2025.01); H02K 2201/09 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus for connecting a plurality of stator segments to form a stator for an electric motor, the apparatus comprising:
a winding nest;
a plurality of stator segments coupled to the winding nest, the plurality of stator segments being movable on the winding nest in radial directions relative to an axis, the plurality of stator segments being movable between inwardly retracted positions and outwardly extended positions; and
a winding tool removably positionable in the winding nest and rotatable about the axis, the winding tool being positionable between a first position out of the winding nest and a second position in the winding nest;
wherein the winding tool, when positioned in the second position in the winding nest, is configured to controllably wind a wire around the plurality of stator segments when the plurality of stator segments are positioned in the outwardly extended positions; and
wherein when the winding tool is positioned in the first position and after winding the wire, the plurality of stator segments are positioned in the inwardly retracted positions to form a wound segmented stator.