Abstract: The power conversion apparatus may include a circuit board, a power module, and a heat sink. The heat sink includes an evaporator and a condensation tooth. The evaporator includes an evaporation cavity, a first side wall, and a second side wall, the first side wall and the second side wall are disposed opposite to each other, and the evaporation cavity is located between the first side wall and the second side wall. There is a thermally conductive rib in the evaporation cavity, one end of the thermally conductive rib is connected to the first side wall, and the other end is connected to the second side wall. A condensation channel is provided in the condensation tooth, a first end of the condensation tooth is connected to an outer surface of the second side wall, and the condensation channel communicates with the evaporation cavity.

Abstract: An inverter and a heat apparatus are disclosed including a circuit board, a power module, and a heat apparatus. The heat apparatus includes an evaporator, a condenser, and a cooling medium. The evaporator is in heat-conducting connection to the power module. The evaporator has an evaporation chamber, the condenser has a condensation channel and an air flow channel, the condensation channel has a first end opening and a second end opening that face away from each other, a gas discharge opening communicates with the first end opening, a liquid return opening communicates with the second end opening, and the condensation channel is parallel to the air flow channel.

Abstract: A power conversion apparatus includes a heat sink and a power module. The heat sink includes a plurality of condensation teeth and an evaporator. The plurality of condensation teeth are spaced apart from each other in a thickness direction of the condensation tooth, and an airflow channel parallel to a second direction is provided between two adjacent condensation teeth. Each condensation tooth has a condensation channel and a solid region that extend in a first direction, and the condensation channel is located on a side of the solid region. The first direction, the second direction, and the thickness direction are perpendicular to each other. In the power conversion apparatus provided, the solid region has a good thermal conductivity, and heat of the evaporator can be effectively transferred to the condensation tooth through the solid region.