Electric water pump with dome type discharge port and vehicle`s heat recovery device having the same

The present invention relates to an electric water pump with a dome type discharge port and a heat recovery device of a vehicle having the same. The electric water pump with a dome type discharge port according to the present invention comprises: a motor module rotated by power applied from the outside; a housing configured to support the motor module on one side of the electric water pump; and a pump module coupled to the housing to be coupled to the motor module to pressurize a working fluid such that the working fluid can be circulated by the torque of the motor module, wherein the pump module includes: a rotor coupled to the motor module to be rotated; vanes coupled to the rotor to approach or withdraw from the rotor; a cam ring provided outside the rotor to guide the rotation of the vanes and form a pressure chamber partitioned by each vane; and a side plate coupled to the housing with the cam ring, the rotor, and the vanes interposed between the side plate and the housing, wherein a buffering part is space provided in a dome shape between a housing cover detachably coupled to the housing and the side plate to accommodate fluid pressurized through the pump module. Thus, provided are an electric water pump with a dome type discharge port, which has a high-pressure discharge port shape for reducing cavitation, can reduce noise, and can simplify structure, and a heat recovery device of a vehicle having the same.