Motor cooling system utilizing axial coolant channels

An electric motor cooling system, comprising:

• a stator comprising a plurality of laminations, said stator comprising a first bulk stator portion and a second bulk stator portion, wherein each of said plurality of laminations includes a plurality of slots and a plurality of stator teeth, wherein said plurality of stator teeth alternate with said plurality of slots;
• a first plurality of bulk axial coolant channels integrated into said first bulk stator portion, wherein an axis corresponding to each of said first plurality of bulk axial coolant channels is parallel with a cylindrical axis corresponding to said stator, and wherein said first plurality of bulk axial coolant channels terminate at a first coolant exit surface corresponding to said first bulk stator portion;
• a second plurality of bulk axial coolant channels integrated into said second bulk stator portion, wherein an axis corresponding to each of said second plurality of bulk axial coolant channels is parallel with said cylindrical axis corresponding to said stator, wherein said second plurality of bulk axial coolant channels terminate at a second coolant exit surface corresponding to said second bulk stator portion, and wherein said first coolant exit surface is distal from said second coolant exit surface;
• a first outer stator lamination proximate to said first coolant exit surface, said first outer stator lamination being different from an outer lamination of the first bulk stator portion and comprising a first plurality of coolant channels, said first plurality of coolant channels restricting coolant flow through said first coolant exit surface and through said first plurality of bulk axial coolant channels;
• a second outer stator lamination proximate to said second coolant exit surface, said second outer stator lamination being different from an outer lamination of the second bulk stator portion and comprising a second plurality of coolant channels, said second plurality of coolant channels restricting coolant flow through said second coolant exit surface and through said second plurality of bulk axial coolant channels;
• a coolant manifold integrated into said stator and positioned between said first bulk stator portion and said second bulk stator portion, wherein said coolant manifold fluidly couples an electric motor coolant intake to said first plurality of bulk axial coolant channels and to said second plurality of bulk axial coolant channels;
• and
• a coolant pump, wherein said coolant pump circulates a coolant through said electric motor coolant intake, said coolant manifold, said first plurality of bulk axial coolant channels, and said second plurality of bulk axial coolant channels.