Cooling plate having improved flow channels

A cooling plate, comprising:

• an inlet;
• an outlet;
• and
• flow channels extending between the inlet and the outlet, such that a coolant flows into the inlet, through the flow channels, and out of the outlet, to absorb heat from a heat generator, the flow channels being defined by flow channel walls extending continuously between the inlet and the outlet, wherein,
• each of the flow channels has a first end portion adjacent to the inlet, a second end portion adjacent to the outlet, and a central portion extending-between the first end portion and the second end portion, and
• the central portion of each of the flow channels has a larger width-wise cross-sectional area than the second end portion and a larger width-wise cross-sectional area than the first end portion, and
• the flow channel walls each have a central portion, and a first end portion and a second end portion continuous with the central portion, wherein the central portion, the first end portion and second end portion of the flow channel walls correspond to the central portion, first end portion and second end portion of the flow channels, and the central portion of each of the flow channel walls has a lesser thickness in a width direction than the second end portion and the first end portion of the flow channel walls.