US Patent 7948126 Liquid cooling system of an electric machine

Disclosed is a liquid cooling system for an electric machine including a frame heat conductively attachable to a stator of an electric machine. The liquid cooling system further includes a cover mechanically attached to the frame and fluidly sealed to the frame, the cover and frame defining a cavity therebetween. The cover includes at least one protrusion extending substantially a distance between the cover and the frame. A method for constructing a liquid is also provided. The method includes forming at least one protrusion in the cover and structurally affixing the cover to the frame. The cover is fluidly sealed to the frame.