A vehicle comprising: an engine having an exhaust gas recirculation system, a supercharger, and an intercooler configured to cool intake gas containing EGR gas; and a cooling device (1, 100), the cooling device (1, 100) comprising: a coolant channel through which coolant cooling a motor drive (6, 16, 18) flows, the coolant channel having a first channel through which a first coolant cooling components (16, 18) of the motor drive (6, 16, 18) flows and a second channel through which a second coolant cooling the intercooler flows, the second channel being branched from the first channel; and a valve provided to the second channel of the coolant channel and configured to adjust a flow rate of the second coolant, wherein an electric motor and the components (16, 18) constitute the motor drive (6, 16, 18), the components (16, 18) of the motor drive (6, 16, 18) are a converter and an inverter, the first channel is a channel where coolant circulates through a water pump, the converter, the inverter, and the electric motor, in this order, the second channel is connected to the first channel at a location between the components (16, 18) and the water pump, the second channel is configured to join the first channel at a location downstream of the electric motor, the vehicle further comprises a controller configured to control the valve, the controller is configured to control the valve so that a flow rate of the second coolant when an intake gas temperature at an outlet of the intercooler is below a given temperature is lower than a flow rate of the second coolant when the intake gas temperature exceeds the given temperature, the intercooler is provided with a temperature sensor configured to detect a temperature of the intake gas, and the temperature sensor is configured to detect a temperature of the intake gas at the outlet of the intercooler. an engine having an exhaust gas recirculation system, a supercharger, and an intercooler configured to cool intake gas containing EGR gas; and a cooling device (1, 100), the cooling device (1, 100) comprising: a coolant channel through which coolant cooling a motor drive (6, 16, 18) flows, the coolant channel having a first channel through which a first coolant cooling components (16, 18) of the motor drive (6, 16, 18) flows and a second channel through which a second coolant cooling the intercooler flows, the second channel being branched from the first channel; and a valve provided to the second channel of the coolant channel and configured to adjust a flow rate of the second coolant, wherein an electric motor and the components (16, 18) constitute the motor drive (6, 16, 18), the components (16, 18) of the motor drive (6, 16, 18) are a converter and an inverter, the first channel is a channel where coolant circulates through a water pump, the converter, the inverter, and the electric motor, in this order, the second channel is connected to the first channel at a location between the components (16, 18) and the water pump, the second channel is configured to join the first channel at a location downstream of the electric motor, the vehicle further comprises a controller configured to control the valve, the controller is configured to control the valve so that a flow rate of the second coolant when an intake gas temperature at an outlet of the intercooler is below a given temperature is lower than a flow rate of the second coolant when the intake gas temperature exceeds the given temperature, the intercooler is provided with a temperature sensor configured to detect a temperature of the intake gas, and the temperature sensor is configured to detect a temperature of the intake gas at the outlet of the intercooler. a coolant channel through which coolant cooling a motor drive (6, 16, 18) flows, the coolant channel having a first channel through which a first coolant cooling components (16, 18) of the motor drive (6, 16, 18) flows and a second channel through which a second coolant cooling the intercooler flows, the second channel being branched from the first channel; and a valve provided to the second channel of the coolant channel and configured to adjust a flow rate of the second coolant, wherein an electric motor and the components (16, 18) constitute the motor drive (6, 16, 18), the components (16, 18) of the motor drive (6, 16, 18) are a converter and an inverter, the first channel is a channel where coolant circulates through a water pump, the converter, the inverter, and the electric motor, in this order, the second channel is connected to the first channel at a location between the components (16, 18) and the water pump, the second channel is configured to join the first channel at a location downstream of the electric motor, the vehicle further comprises a controller configured to control the valve, the controller is configured to control the valve so that a flow rate of the second coolant when an intake gas temperature at an outlet of the intercooler is below a given temperature is lower than a flow rate of the second coolant when the intake gas temperature exceeds the given temperature, the intercooler is provided with a temperature sensor configured to detect a temperature of the intake gas, and the temperature sensor is configured to detect a temperature of the intake gas at the outlet of the intercooler.