Power conversion apparatus

A power conversion apparatus, comprising

• a housing comprising
• a coolant passage;
• and
• at least one first heat-dissipation wall thermally coupled to the coolant passage;
• a mother board disposed upon the housing and comprising
• a first surface facing the housing;
• at least one first power device disposed on the mother board and comprising a first face and a second face;
• and
• at least one second power device disposed on the first surface of the mother board and including a first face and a second face;
• an electromagnetic filter board disposed upon the housing and electrically connected to the mother board;
• a signal board disposed upon the housing and electrically connected to the mother board;
• and
• a heat-dissipation module comprising
• at least one first insulated heat-conducting sheet, adhered to the corresponding at least one first heat-dissipation wall;
• at least one first elastic clamp, fixed to the housing and opposite to the at least one first insulated heat-conducting sheet, so that an accommodating space is defined by the at least one first elastic clamp and the at least one first insulated heat-conducting sheet,
• wherein when the first surface of the mother board approaches the housing and to clamp the at least one first power device in the accommodating space between the at least one first elastic clamp and the at least one first insulated heat-conducting sheet, the at least one first power device is pressed against by the at least one first elastic clamp at the first face and thus adhered to the at least one first insulated heat-conducting sheet at the second face, so that the at least one first power device is thermally coupled to the at least one first heat-dissipation wall and the coolant passage via the at least one first insulated heat-conducting sheet,
• at least one second insulated heat-conducting sheet;
• and
• at least one second elastic clamp, disposed between the first surface of the mother board and the first face of the at least one second power device and opposite to the at least one second insulated heat-conducting sheet.