Electric power converter

An electric power converter comprising:

• a laminated body formed by laminating a plurality of semiconductor modules having built-in semiconductor elements and a plurality of cooling pipes for cooling the semiconductor modules alternately;
• a capacitor connected to the plurality of semiconductor modules;
• a pressing member that presses the laminated body in a laminating direction of the laminated body;
• and
• a metal case that houses the laminated body, the capacitor, and the pressing member;
• wherein,
• the case has outer wall portions that form an outer shell, and partition wall portions formed in the case and are connected to the outer wall portions;
• a space within the case Is partitioned by the partition wall portions into a capacitor housing space for housing the capacitor and a laminated body housing space for housing the laminated body;
• the capacitor includes capacitor elements housed in the capacitor housing space, and a sealing member that is filled in the capacitor housing space for sealing the capacitor elements;
• the capacitor is disposed at a position adjacent to the laminated body in the laminating direction;
• pressing force of the pressing member is applied to an interposing partition wall portion interposing between the laminated body and the capacitor among the partition wall portions in its thickness direction;
• and
• a thickness of the interposing partition wall portion is made thinner than any other parts of the outer wall portions.