Electrical inverter device with a liquid channel and electric vehicle with such an inverter device

Electrical inverter device with a liquid channel (120) for a coolant for cooling a heating element in the power circuit of the inverter device (100, 103, 104) - a heating element positioned at the middle liquid channel section (114), - a liquid passage with the middle portion (114) continuously connected to fluid channel feeding section (112) for supplying the coolant, and - a liquid passage with the middle portion (114) continuously connected fluid flow channel portion (116) for discharging the coolant which characterized, in that - the cross-sectional area of ​​the liquid passage (120) from the liquid supply section channel (112) through the intermediate liquid flow path section (114) is constant to the liquid flow channel portion (116) substantially.