Hybrid heat sink and hybrid heat sink assembly for power module

A hybrid heat sink assembly for a power module, comprising two hybrid heat sinks provided opposite to each other, each of the hybrid heat sinks comprising:

• a base provided with at least one power module on one side thereof;
• a first heat dissipation unit as a first heat dissipation fin group which is composed of a plurality of heat dissipation fins intervally arranged and is located on the other side of the base;
• and
• a second heat dissipation unit comprising a plurality of heat pipes and a second heat dissipation fin group, each of the heat pipes comprising an evaporating section provided in the base and close to the power module, a condensing section, and an adiabatic section located between the evaporating section and the condensing section and comprising an extension portion extending upwardly from a distal end of the evaporating section and a folding portion folded from a distal end of the extension portion, the second heat dissipation fin group being provided on the condensing sections of the heat pipes and being composed of a plurality of heat dissipation fins;
• wherein the first heat dissipation fin groups of the two hybrid heat sinks are provided in parallel and located at inner sides of the bases, and interval distances between the condensing sections of all the heat pipes and the first heat dissipation fin group in one of the hybrid heat sinks are larger than interval distances between the condensing sections of all the heat pipes and the first heat dissipation fin group in the other of the hybrid heat sinks