To provide a wound capacitor in which heat generation due to current change and inductance are reduced.
A wound capacitor 2 comprises: a wound capacitor body 4; a first bus bar 5; and a second bus bar 3. The wound capacitor body 4 is columnar and has electrodes at both ends. The first bus bar 5 is in contact with one end of the wound capacitor body 4. The second bus bar 3 is in contact with the other end of the wound capacitor body 4. The second bus bar 3 has a bottomed cylindrical shape, which covers the periphery of the wound capacitor body 4 up to one end thereof. The connection point of the second bus bar 3 and other electronic component is located on one end side. In the wound capacitor, the direction of a current flowing through the wound capacitor body 4 is opposite from the direction of a current flowing through the cylindrical part of the second bus bar 3. Consequently, the directions of induction fields caused by current change are also opposite from each other, and the induction fields are cancelled.
TORII KAORU
KOJIMA TAKASHI
ASADA TAKASHI
TOYOTA CENTRAL RES & DEV
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