Reactor cooling structure

A reactor cooling structure comprising:

• a plurality of reactors that are stacked on one another in a stacking direction, each reactor including a coil, which is configured to produce magnetic flux when energized, and a core integrated with the coil;
• and
• a cooling mechanism that cools the plurality of reactors, wherein:
• each of the reactors has an exterior member housing the coil and the core of the reactor, the exterior member having:
• first heat radiation surfaces respectively provided on both sides of the corresponding one of the reactors in the stacking direction of the stacked reactors;
• and
• second heat radiation surfaces respectively provided on both sides of the corresponding reactor in a direction perpendicular to the stacking direction,
• the first and second heat radiation surfaces being arranged to cool the coil of the corresponding reactor;
• the cooling mechanism includes a cooling flow path for directly cooling by a refrigerant the first and second heat radiation surfaces of the exterior member of each of the reactors;
• all the first and second heat radiation surfaces of each of the reactors (i) are arranged to face the cooling flow path and (ii) are made of a predetermined material;
• the core of each of the plurality of reactors (i) is made of magnetic powder-mixed resin and (ii) is arranged inside and outside of the corresponding coil;
• the external member of each of the reactors has inner wall surfaces in the stacking direction, the inner wall surfaces of the external member of each of the reactors being arranged to face the respective first heat radiation surfaces of the external member of the corresponding one of the reactors;
• and
• the core of each of the reactors is arranged to be in contact with the inner wall surfaces of the exterior member of the corresponding one of the reactors.