HEAT EXCHANGER FOR VEHICLE

A heat exchanger for a vehicle configured to perform heat exchange between coolant and refrigerant includes: a plurality of stacked plates sequentially stacked to form a plurality of refrigerant spaces filled with the refrigerant and a plurality of coolant spaces filled with the coolant; a thermal expansion valve disposed in the vicinity of the plurality of the stacked plates; and a connection block disposed between the thermal expansion valve and the plurality of stacked plates. The connection block comprises a refrigerant inlet passage for introducing the refrigerant introduced through the thermal expansion valve into the plurality of the stacked plates and a refrigerant discharge passage for introducing the refrigerant discharged from the plurality of the stacked plates into the thermal expansion valve. The plurality of the stacked plates are configured to form a refrigerant passage for moving the refrigerant introduced through the refrigerant inlet passage, and a refrigerant bypass passage connected to the refrigerant passage to discharge the refrigerant to the refrigerant discharge passage.