ELECTRONIC CONTROL UNIT AND ROTATING ELECTRIC MACHINE
First Claim
1. An electronic control unit comprising:
- a substrate;
a first circuit pattern and a second circuit pattern disposed on the substrate;
a semiconductor chip electrically connected to the first circuit pattern and the second circuit pattern;
a resin body wrapped around a portion of the semiconductor chip and having a board shape with a first face facing the substrate and a second face facing away from the substrate;
a first metal plate having a side connected to the semiconductor chip and having an other side connected to the first circuit pattern;
a radiator having a base portion and a first shaped portion, the base portion having a board shape with a predetermined thickness, the base portion disposed on an opposite side of the resin body relative to the substrate, the first shaped portion projecting from the base portion toward the first circuit pattern and forming a first gap that is defined between the first shaped portion and the first circuit pattern; and
a first heat conductor disposed in the first gap and transmitting heat from the first circuit pattern to the radiator.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic control unit is equipped with a semiconductor module having a semiconductor chip electrically connected to the first circuit pattern and the second circuit pattern. A resin body is wrapped around the semiconductor chip. A first metal plate has a side connected to the semiconductor chip and an other side connected to the first circuit pattern. A radiator projects toward and is connected to the first circuit pattern by a first heat conductor. As a result, heat generated by the semiconductor chip is transmitted to the radiator through the first metal plate, the first circuit pattern, and the first heat conductor during operation of the semiconductor module.
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Citations
11 Claims
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1. An electronic control unit comprising:
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a substrate; a first circuit pattern and a second circuit pattern disposed on the substrate; a semiconductor chip electrically connected to the first circuit pattern and the second circuit pattern; a resin body wrapped around a portion of the semiconductor chip and having a board shape with a first face facing the substrate and a second face facing away from the substrate; a first metal plate having a side connected to the semiconductor chip and having an other side connected to the first circuit pattern; a radiator having a base portion and a first shaped portion, the base portion having a board shape with a predetermined thickness, the base portion disposed on an opposite side of the resin body relative to the substrate, the first shaped portion projecting from the base portion toward the first circuit pattern and forming a first gap that is defined between the first shaped portion and the first circuit pattern; and a first heat conductor disposed in the first gap and transmitting heat from the first circuit pattern to the radiator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A rotating electric machine comprising:
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a motor case having a cylindrical shape; an end cap positioned at an axial end of the motor case; a stator housed in the motor case; a rotor rotatably disposed inside of the stator; a shaft disposed at a center of the rotor; a winding wound on the stator; an electronic control unit positioned at the axial end of the motor case and controlling a supply of electric power to the winding, the electronic control unit having a substrate, a first circuit pattern and a second circuit pattern disposed on the substrate, a semiconductor chip electrically connected to the first circuit pattern and the second circuit pattern; a resin body wrapped around a portion of the semiconductor chip and having a board shape with a first face facing the substrate and a second face facing away from the substrate; a first metal plate having a side connected to the semiconductor chip and having an other side connected to the first circuit pattern; a radiator having a base portion and a first shaped portion, the base portion having a board shape with a predetermined thickness, the base portion disposed on an opposite side of the resin body relative to the substrate, the first shaped portion projecting from the base portion toward the first circuit pattern and forming a first gap that is defined between the first shaped portion and the first circuit pattern; and a first heat conductor disposed in the first gap and transmitting heat from first circuit pattern to the radiator, wherein the radiator is formed either (i) as a single body with the end cap, (ii) separate from and in direct contact with the end cap, or (iii) separate from and in thermal connection with the end cap.
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Specification