DBC welding substrate of welding-free mold

The utility model relates to the technical field of DBC processing, in particular to a DBC welding substrate of a welding-free die, which is used for positioning a welding piece and a DBC plate, a main body of the welding substrate is a plane metal plate, a groove is arranged on a main extension surface on one side of the welding substrate, the size of the groove is matched with the size and the shape of the welding piece and the DBC plate, and the welding piece and the DBC plate are arranged in the groove. And the side wall of the groove is perpendicular to the main extension surface of the welding substrate. The welding substrate does not need a limiting die in the process of welding the soldering lug and the DBC plate, positioning is accurate, the adjusting time is saved, meanwhile, the situation that the positioning die is clamped by the DBC plate due to thermal expansion and cold contraction is avoided, and the yield of the power module is greatly improved. 本实用新型涉及DBC加工技术领域，一种免焊接模具的DBC焊接基板，用于定位焊片和DBC板，所述