Capacitor module and power conversion device

A capacitor module, comprising:

• a first capacitor element;
• a second capacitor element;
• a positive pole-side bus bar;
• and
• a negative pole-side bus bar disposed in a laminated state, in which the positive pole-side bus bar and the negative pole-side bus bar are laminated via an insulating member, wherein:
• the first capacitor element includes an electrically-conducting first capacitor cell where an electric charge is stored, a first positive pole-side electrode disposed on one side of the first capacitor cell, and a first negative pole-side electrode disposed on another side of the first capacitor cell so as to face the first positive pole-side electrode via the first capacitor cell;
• the second capacitor element includes a second capacitor cell where an electric charge is stored, a second positive pole-side electrode disposed on one side of the second capacitor cell, and a second negative pole-side electrode disposed so as to face the second positive pole-side electrode via the second capacitor cell;
• the first capacitor element is disposed so that the first positive pole-side electrode assumes a position closer to the second negative pole-side electrode than to the second positive pole-side electrode, and the first positive pole-side electrode and the second negative pole-side electrode are arranged in a line so that the first positive pole-side electrode directly overlaps the second negative pole-side electrode along a direction, perpendicular to a surface of the first positive pole-side electrode;
• a laminate portion formed with the positive pole-side bus bar and the negative pole-side bus bar continues up to a point over a space where the first positive pole-side electrode and the second negative pole-side electrode face each other,
• the first and second capacitor cells, including electrodes thereof, are covered directly by the laminated positive pole-side bus bar and the laminated negative pole-side bus bar.