Heat exchanger module of the type having plates comprising channels incorporating at least one fluid supply and distribution zone formed by studs

A heat exchanger module having a longitudinal axis, the heat exchanger module comprising:

• a stack of plates, defining at least two fluid circuits, at least a part of each of the plates comprising fluid circulation channels,
• wherein a first circuit of the at least two circuits includes
• a first fluid supply and distribution zone for supplying and distributing a first fluid from outside the stack, forming a first fluid pre-header, in which first pre-header channels are delimited by first studs distributed over a surface of each plate of the first circuit;
• and
• a first exchange zone continuous with the first pre-header and in which first exchange channels are each delimited by a groove, separated from one another by a rib, and extending along the longitudinal axis,
• wherein a second circuit of the at least two circuits includes
• a second fluid supply and distribution zone for supplying and distributing a second fluid from outside the stack, forming a second fluid pre-header, in which second pre-header channels are delimited by second studs distributed over a surface of each plate of the second circuit;
• and
• a second exchange zone continuous with the second pre-header and in which second exchange channels are each delimited by a groove, separated from one another by a rib, and extending along the longitudinal axis, and
• wherein the first studs of the first circuit and/or the second studs of the second circuit are holed and open-ended so as to allow communication between the first pre-header channels of the plates of the first circuit or the second pre-header circuit of the second circuit, but not with those of the plates of the second circuit or respectively of the first circuit.