Electric Power Converter
First Claim
1. An electric power converter comprising:
- a capacitor module having a first pair of positive and negative DC terminals formed by stacking flat plate conductors via a first insulator; and
a power module having a second pair of positive and negative DC terminals formed by stacking other flat plate conductors via a second insulator, said power module further including a plurality of power semiconductor elements each for converting DC power supplied from said second pair of said DC terminals into three-phase AC power;
wherein;
said first pair of said positive and negative DC terminals is constructed such that said associated flat plate conductors are bent in directions opposite to each other at a front end of said terminal pair, and has a first connection surface electrically connected to said second pair of said positive and negative DC terminals, at an end of any one of said bent conductors;
said second pair of said positive and negative DC terminals is constructed such that said associated flat plate conductors are bent in directions opposite to each other at a front end of said terminal pair, and has a second connection surface electrically connected to said first pair of said positive and negative DC terminals, at an end of any one of said bent conductors; and
in a connection region between said first connection surface and said second connection surface, said first insulator and said second insulator overlap each other.
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Accused Products
Abstract
The present invention provides a highly reliable electric power converter reduced in parasitic inductance.
An electric power converter that includes a capacitor module which has a DC terminal, an inverter which coverts a direct current into an alternating current, and heat release fins which cool the inverter, is constructed so that: the inverter has a power module including a plurality of power semiconductor elements; the power module further has a metallic base, a dielectric substrate provided on one face of the metallic base, a power semiconductor element fixed to the dielectric substrate, and a DC terminal; the metallic base has the heat release fins on the other face; the DC terminal in the power module and the DC terminal in the capacitor module are each formed by stacking flat plate conductors via an insulator; the two positive and negative DC terminals have respective front ends bent in opposite directions; a plane including the bent sections is used as a surface for connecting the power module and the capacitor module; and the insulators overlap each other at the connection surface.
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Citations
1 Claim
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1. An electric power converter comprising:
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a capacitor module having a first pair of positive and negative DC terminals formed by stacking flat plate conductors via a first insulator; and a power module having a second pair of positive and negative DC terminals formed by stacking other flat plate conductors via a second insulator, said power module further including a plurality of power semiconductor elements each for converting DC power supplied from said second pair of said DC terminals into three-phase AC power; wherein; said first pair of said positive and negative DC terminals is constructed such that said associated flat plate conductors are bent in directions opposite to each other at a front end of said terminal pair, and has a first connection surface electrically connected to said second pair of said positive and negative DC terminals, at an end of any one of said bent conductors; said second pair of said positive and negative DC terminals is constructed such that said associated flat plate conductors are bent in directions opposite to each other at a front end of said terminal pair, and has a second connection surface electrically connected to said first pair of said positive and negative DC terminals, at an end of any one of said bent conductors; and in a connection region between said first connection surface and said second connection surface, said first insulator and said second insulator overlap each other.
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Specification