Abstract: A power converter apparatus for a vehicle includes: a cooling block provided with a refrigerant inlet and a refrigerant outlet, and with two cooling baths connected to the refrigerant inlet in parallel and each having a shape open to an outside, the cooling block being configured to allow refrigerants passing through the two cooling baths to be merged prior to being discharged through the refrigerant outlet; two cooling plates, wherein each of the two cooling plates covers an opening of an associated one of the cooling baths to provide a cooling chamber and includes a plurality of cooling fins protruding into the cooling chamber; and two cooling tubes, wherein each of the cooling tubes is coupled to the cooling block to provide a space for accommodating a power module between the cooling tube and an associated one of the cooling plates.

Abstract: A power converter apparatus for a vehicle includes: a cooling block provided with a refrigerant inlet and a refrigerant outlet, and with two cooling baths connected to the refrigerant inlet in parallel and each having a shape open to an outside, the cooling block being configured to allow refrigerants passing through the two cooling baths to be merged prior to being discharged through the refrigerant outlet; two cooling plates, wherein each of the two cooling plates covers an opening of an associated one of the cooling baths to provide a cooling chamber and includes a plurality of cooling fins protruding into the cooling chamber; and two cooling tubes, wherein each of the cooling tubes is coupled to the cooling block to provide a space for accommodating a power module between the cooling tube and an associated one of the cooling plates.

Abstract: The present disclosure provides a capacitor module including: a capacitor; a first housing having a hexahedron shape and having an inner space in which the capacitor is disposed, the first housing including a pair of cooling parts recessed inwards from a pair of parallel surfaces among outer side surfaces thereof such that a refrigerant flows, a pair of cooling channels disposed inside opposite side surfaces perpendicular to the surfaces of the pair of cooling parts such that the pair of cooling parts communicate with each other, and a through-hole configured to connect each of the cooling channels to the outside such that the refrigerant is introduced or discharged therethrough; and a cooling plate coupled to the first housing so as to seal the cooling parts.