Electric machine in-slot cooling manifold

A cooling manifold of an electric machine, the cooling manifold comprising:

• a first surface formed by overmolding a first side of a first portion of a stator of the electric machine;
• and
• a second surface formed by overmolding a second side of a second portion of the stator;
• wherein the cooling manifold is formed between the first surface and the second surface as a result of one of:
• clamping the first portion of the stator to the second portion of the stator via a plurality of bolts;
• and
• an interference fit between a first plurality of interlocking axial features formed in the first surface and the second surface.

A method for assembling an electric machine, the method comprising:

• overmolding a first side of a first substack of a stator of the electric machine with a polymer;
• overmolding a first side of a second substack of the stator with the polymer;
• coaxially aligning the first substack with the second substack around a central axis;
• aligning a first bolt hole at a first perimeter of the first substack with a second bolt hole at a second perimeter of the second substack;
• inserting a dowel into both of the first bolt hole and the second bolt hole;
• rotating the first substack with respect to the second substack until a third bolt hole at the first perimeter of the first substack is aligned with a fourth bolt hole at the second perimeter of the second substack;
• and
• clamping the first substack to the second substack using at least a first bolt inserted into the first bolt hole and the second bolt hole, and a second bolt inserted into the third bolt hole and the fourth bolt hole.