Power control unit and power control unit mounting structure

A mounting structure of a power control unit, the power control unit being equipped with a casing housing a power converter, the casing being disposed inside a housing chamber of a driving unit of a vehicle, wherein:

• the casing is fastened with bolts at a plurality of fastening parts to a predetermined member provided in the housing chamber of the driving unit;
• the plurality of fastening parts include a specific fastening part on which a shear load concentrates when a load is input into the casing, and an ordinary fastening part other than the specific fastening part;
• the specific fastening part has an induction portion inducing plastic deformation;
• and
• the induction portion is configured to lower an elastic limit of the specific fastening part when the load is input into the casing, such that the specific fastening part undergoes plastic deformation earlier than the ordinary fastening part.

A power control unit located inside a housing chamber of a driving unit of a vehicle, the power control unit comprising a casing housing a power conversion device, wherein:

• the casing includes a plurality of casing segments;
• a plurality of fastening parts are located around the plurality of casing segments;
• the plurality of casing segments are fastened to each other with bolts at the plurality of fastening parts;
• the plurality of fastening parts include a specific fastening part on which a shear load concentrates when a load is input into the casing, and an ordinary fastening part other than the specific fastening part;
• the specific fastening part has an induction portion inducing plastic deformation;
• and
• an elastic limit of the specific fastening part is lower than an elastic limit of the ordinary fastening part, such that the specific fastening part undergoes plastic deformation earlier than the ordinary fastening part when the load is input into the casing.