Automobile heat dissipation device having modified surface

An automobile heat dissipation device having a modified surface, comprising:

• a metal heat dissipation device having a first heat dissipation surface and a second heat dissipation surface that is configured to contact a coolant or air;
• and
• a silver metal layer, wherein the silver metal layer is formed on the first heat dissipation surface of the metal heat dissipation device by arc ion plating (AIP), so as to form a surface modification layer on the metal heat dissipation device;
• wherein a surface of the surface modification layer is distributed with a plurality of holes that each have a diameter of from 0.1 μm to 30 μm and a plurality of metal particles that each have a size of less than 30 μm, and the surface of the surface modification layer acts as a subsequent silver sintered interface, so that the silver sintered interface is joined to at least one automobile electronic module by silver sintering.