Power conversion apparatus with a laminated bus bar comprising an exposed heat radiating portion
First Claim
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1. A power conversion apparatus comprising:
- a filter capacitor accumulating direct-current power;
a semiconductor device module performing a switching operation that converts the direct-current power accumulated in the filter capacitor to alternating-current power; and
a laminated bus bar electrically connecting the filter capacitor and the semiconductor device module,wherein the laminated bus bar comprises;
a bus bar in which a plurality of conductors are laminated through an insulator;
an external laminate material coating an external surface of the bus bar;
connection portions electrically connected to the semiconductor device module and the filter capacitor; and
a heat radiating portion in which the external laminate material is not provided and a conductor of the bus bar is exposed to air, andwherein every surface of the exposed conductor of the heat radiating portion is formed to be along a vertical direction.
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Abstract
A filter capacitor accumulating direct-current power and a semiconductor device module performing a switching operation that converts the direct-current power accumulated in the filter capacitor to alternating-current power are electrically connected with each other through a laminated bus bar. The laminated bus bar has a first bus bar and a second bus bar in which a plurality of connection conductors are laminated through an insulator. The second bus bar is provided with heat radiating portions that are formed by exposing a part of the conductor in each flat plate surface.
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Citations
7 Claims
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1. A power conversion apparatus comprising:
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a filter capacitor accumulating direct-current power; a semiconductor device module performing a switching operation that converts the direct-current power accumulated in the filter capacitor to alternating-current power; and a laminated bus bar electrically connecting the filter capacitor and the semiconductor device module, wherein the laminated bus bar comprises; a bus bar in which a plurality of conductors are laminated through an insulator; an external laminate material coating an external surface of the bus bar; connection portions electrically connected to the semiconductor device module and the filter capacitor; and a heat radiating portion in which the external laminate material is not provided and a conductor of the bus bar is exposed to air, and wherein every surface of the exposed conductor of the heat radiating portion is formed to be along a vertical direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification