Power converter equipped with semiconductor module
AssigneeDenso Corporation
InventorHideaki Tachibana
Life of this patent
Estimating the term…
Abstract
In a power converter, a plurality of AC busbars are electrically connected to an AC load. An insulating support surrounds at least part of a stacked converter unit of semiconductor modules and refrigerant paths. The set of busbars are fixedly mounted on the insulating support. A terminal holder has a mount surface on which one end of each of the plurality of AC busbars is mounted as a terminal. A current sensor has a through-hole and measures a current flowing through at least part of at least one of the plurality of AC busbars. The current sensor is attached to the terminal holder with the at least part of the at least one of the plurality of AC busbars being fitted in the through-hole of the current sensor.
Claims8
A power converter comprising:
- a stack unit in which a plurality of semiconductor modules and a plurality of refrigerant paths through which refrigerant flows are stacked, the plurality of semiconductor modules having power terminals projecting from a body in which a semiconductor element is encapsulated;
- a set of busbars electrically connected to the power terminals, the set of busbars including:
- a positive busbar electrically connected to a positive terminal of a DC power source;
- a negative busbar electrically connected to a negative terminal of the DC power source;
- and
- a plurality of AC busbars electrically connected to an AC load;
- a frame portion surrounding the stacked unit from at least three directions when viewed from the projecting direction, the set of busbars being fixed to the frame portion;
- a terminal holder having a mount surface on which terminals of the AC busbars are mounted;
- and
- a current sensor that measures a current flowing through at least part of the AC busbars,
- wherein:
- the frame portion and the terminal holder are integrated to each other to constitute a resin-molded body;
- the AC busbars are separate members from the resin-molded body;
- the AC busbars are fixedly mounted on the resin-molded body;
- the current sensor is attached to a position of the terminal holder, the position being closer to the frame portion than to the mount surface;
- and
- at least part of the AC busbars is fitted in a through hole formed through the current sensor.
Dependencies are inferred from the claim text.