Heat-exchanger box, heat exchanger provided with such a box and intake module provided with such a heat exchanger

The case (2) has a body (5) defining a housing (6) for receiving a bundle of heat exchangers (1). The body is provided with a contact edge (13) for attaching a set of collectors (3, 4) of the heat exchangers. The body is provided with a set of plates that is assembled together. One of the plates, a stiffener, and raised edges extend in a secant direction at the contact edge. The edges allow passage of a welding torch at the contact edge so as to provide a weld seam between the housing and the case along the contact edge or on a level of raised edges.