Patent ID: 8081472

Claim:
An electric power converter comprising: a plurality of electric circuit devices respectively having a semiconductor chip for converting direct current to alternating current and a lead terminal for transferring said direct current to said semiconductor chip; a capacitor block having a capacitor element for smoothing said direct current and a capacitor terminal for transferring said direct current to said lead terminal; and a heat release base having a flow channel for carrying a cooling medium; wherein said heat release base comprises a plurality of electric circuit device insertion sections and a cooling fin for holding said capacitor block; said electric circuit devices respectively have a first heat releasing section and a second heat releasing section facing said first heat releasing section through said semiconductor chip; said heat release base fixes said electric circuit devices in said electric circuit device insertion sections so that said first heat releasing section and said second heat releasing section are disposed between said flow channel; and said capacitor block is fixed by said cooling fin so that said capacitor terminal directly connects to said lead terminal.