Patent ID: 9065312
Filing Date: 2015-06-23
Classification: H02K

Abstract:
1. A frame having integrated cooling for an electric drive, in which coolant is flowable inversely through a width of the frame, comprising: a cylindrical sleeve having a diameter and an axial width; a coolant intake; a coolant outlet; and cooling ducts arranged on an outer surface of the cylindrical sleeve; wherein a first bundle of cooling ducts are connected in parallel and are adapted to guide the coolant from the coolant intake around substantially an entire circumference of the sleeve; wherein a second bundle of cooling ducts are connected in parallel and are adapted to guide the coolant around substantially the entire circumference of the frame back to the coolant outlet; wherein the first bundle of cooling ducts, the second bundle of coolant ducts, a reversal region, and an outlet region are sealed by a further cylindrical sleeve that rests against an outer periphery of the frame; wherein the further sleeve is welded to the frame; and wherein the further sleeve includes a first slot arranged between the first bundle of cooling ducts and the second bundle of cooling ducts and between an intake region and an outlet region, the further sleeve welded to the frame along the first slot.