Motor controller
First Claim
1. A motor controller comprising:
- a heat sink,a power semiconductor module that is in close contact with the heat sink,a substrate that is electrically connected to the power semiconductor module, anda fan that generates the flow of external air and supplies cooling air to the heat sink, whereinthe heat sink is formed by combining two kinds of heat sinks, which include a first heat sink and a second heat sink, so as to conduct heat therebetween, andthe power semiconductor module is in close contact with the second heat sinkwhereinthe first heat sink is a die-cast heat sink, andthe second heat sink is made of a material having excellent thermal conductivity by an extruding or caulking method.
1 Assignment
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Accused Products
Abstract
A motor controller, which is inexpensive and has small size, is provided by reducing the size of a heat sink used in the motor controller and the number of all parts of the motor controller, wherein said motor controller includes a heat sink, a power semiconductor modules that is in close contact with the heat sink, a substrate (4) that is electrically connected to the power semiconductor module, and a fan (6) that generates the flow of external air and supplies cooling air to the heat sink, wherein said heat sink is formed by combining two kinds of heat sinks, which include a first heat sink (7) and a second heat sink (8), so as to conduct heat therebetween, and, wherein said power semiconductor module is in close contact with the second heat sink (8).
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Citations
6 Claims
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1. A motor controller comprising:
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a heat sink, a power semiconductor module that is in close contact with the heat sink, a substrate that is electrically connected to the power semiconductor module, and a fan that generates the flow of external air and supplies cooling air to the heat sink, wherein the heat sink is formed by combining two kinds of heat sinks, which include a first heat sink and a second heat sink, so as to conduct heat therebetween, and the power semiconductor module is in close contact with the second heat sink wherein the first heat sink is a die-cast heat sink, and the second heat sink is made of a material having excellent thermal conductivity by an extruding or caulking method. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification