Power converter
First Claim
1. A power converter, comprising:
- a semiconductor module that comprises a power semiconductor element to convert DC power to AC power;
a capacitor for smoothing the DC power;
a DC-side connecting conductor that transmits the DC power from the capacitor to the semiconductor module;
a passage forming body that is constructed of a thermally conductive member and forms a passage through which coolant flows; and
a case that defines a housing space for housing the semiconductor module and is provided with an opening portion, wherein;
the semiconductor module is disposed at one side of the passage forming body and the capacitor is disposed at another side of the passage forming body, opposite to the semiconductor module via the passage forming body;
the passage forming body is provided with an opening that communicates with the passage at the side of the passage forming body where the semiconductor module is disposed and a through hole that connects between a space in which the semiconductor module is disposed and a space in which the capacitor is disposed;
the semiconductor module is provided with a heat transfer plate on which the power semiconductor element is mounted via an insulating substrate;
the heat transfer plate closes the opening so as to directly contact with the coolant;
the opening portion of the case is closed by the passage forming body in a state in which the semiconductor module is housed in the housing space of the case; and
the DC-side connecting conductor extends through the through hole to electrically connect the capacitor with the semiconductor module.
2 Assignments
0 Petitions
Accused Products
Abstract
The object is to provide a power converter which is capable of minimizing an extent to which the power converter components other than the semiconductor module are thermally affected by the heat originating from the semiconductor module. The semiconductor modules constituting a main circuit for power conversion; a capacitor electrically connected to the main circuit; drive circuits that provide the main circuit with a drive signal used in power conversion operation; a control circuit that provides the drive circuit with a control signal used to prompt the drive circuit to provide the drive signal. Within a casing, a cooling chamber including a coolant passage is formed, and a chamber wall of the cooling chamber is formed with a thermally conductive material. At least the semiconductor modules are housed inside the cooling chamber, and at least the capacitor and the control circuit are disposed outside the cooling chamber.
52 Citations
8 Claims
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1. A power converter, comprising:
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a semiconductor module that comprises a power semiconductor element to convert DC power to AC power; a capacitor for smoothing the DC power; a DC-side connecting conductor that transmits the DC power from the capacitor to the semiconductor module; a passage forming body that is constructed of a thermally conductive member and forms a passage through which coolant flows; and a case that defines a housing space for housing the semiconductor module and is provided with an opening portion, wherein; the semiconductor module is disposed at one side of the passage forming body and the capacitor is disposed at another side of the passage forming body, opposite to the semiconductor module via the passage forming body; the passage forming body is provided with an opening that communicates with the passage at the side of the passage forming body where the semiconductor module is disposed and a through hole that connects between a space in which the semiconductor module is disposed and a space in which the capacitor is disposed; the semiconductor module is provided with a heat transfer plate on which the power semiconductor element is mounted via an insulating substrate; the heat transfer plate closes the opening so as to directly contact with the coolant; the opening portion of the case is closed by the passage forming body in a state in which the semiconductor module is housed in the housing space of the case; and the DC-side connecting conductor extends through the through hole to electrically connect the capacitor with the semiconductor module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification