Cold plate heat exchanger and corresponding production process by additive manufacturing

A method for production by additive manufacturing of a cold plate heat exchanger, the method comprising:

• computer-based generation of a virtual geometry of said cold plate heat exchanger, wherein said virtual geometry comprises an internal channel that is at least partially filled with an ordered lattice structure comprising a periodic repetition of one or more elementary cells along at least one dimension;
• saving of said virtual geometry in an appropriate electronic format;
• selection of a base material with which to manufacture said cold plate heat exchanger, and subsequent loading of said base material in an additive manufacturing machine;
• and
• production of said cold plate heat exchanger by means of said additive manufacturing machine, wherein said cold plate heat exchanger comprises said internal channel at least partially filled with said ordered lattice structure;
• wherein said virtual geometry of said cold plate heat exchanger further comprises a main body comprising at least one active surface suitable to heat transfer with at least one device in thermal contact with said at least one active surface, being said internal channel formed inside said main body and arranged in proximity of said at least one active surface and in thermal contact with said at least one active surface;
• wherein:
• said main body further comprises at least one neutral surface not suitable to the heat transfer and separated from said internal channel by means of at least one interspace and/or a wall thickness of said main body corresponding to said at least one neutral surface that is greater with respect to a wall thickness of said main body corresponding to said at least one active surface.