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Electric power conversion device

A technology of a power conversion device and a power module, which is applied in the direction of converting irreversible DC power input into AC power output, electrical components, and electrical solid devices, etc. achieve the effect of reducing thermal resistance

Inactive Publication Date: 2014-08-27
FUJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is an unsolved problem that the heat generated by the control components on the control board cannot be efficiently conducted to the cooling plate due to the large thermal resistance between the control board and the GND pattern and the pillars.

Method used

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  • Electric power conversion device
  • Electric power conversion device
  • Electric power conversion device

Examples

Experimental program
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Embodiment Construction

[0045] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0046] figure 1 It is a sectional view showing the overall structure of the power conversion device according to the present invention.

[0047] In the figure, reference numeral 1 is a power conversion device, and the power conversion device 1 is accommodated in a casing 2 . The casing 2 is molded from a synthetic resin material, and the casing 2 is composed of a lower casing 2A and an upper casing 2B, and the lower casing 2A and the upper casing 2B constitute a cooling body sandwiching a structure having a water-cooled sleeve. 3 and is divided into upper and lower sides.

[0048] The lower case 2A is constituted by a bottomed square cylinder. The open upper portion of the lower case 2A is covered with a cooling body 3 , and a filter film capacitor 4 is accommodated therein.

[0049] The upper casing 2B includes a square cylinder 2a with open upper and lower ends, a...

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PUM

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Abstract

The invention provides an electric power conversion device capable of supporting, with minimal thermal resistance, a mounted substrate on which a circuit component is mounted, and of efficiently transferring the generated heat of a heating circuit component to a cooling body. The electric power conversion device is provided with a semiconductor power module (11), one side of which is joined to a cooling body, mounted substrates (22), (23) on which is mounted a circuit component including a heating circuit component for driving the semiconductor power module, and heat transfer support plates (32), (33) for supporting the mounted substrates and transferring heat of the mounted substrates to the cooling body, the heat transfer support plates having joining parts (34), (35) for directly joining the mounted substrates to the heat transfer support plates.

Description

technical field [0001] The present invention relates to a power conversion device. In the power conversion device, a semiconductor power module including a semiconductor switching element for power conversion is supported on a mounting substrate, and the mounting substrate includes a device for driving the semiconductor switching element. Circuit components for heating circuit components. Background technique [0002] As such a power conversion device, a vehicle inverter device described in Patent Document 1 is known. The control board of the vehicle inverter device is connected to the support fixed on the cooling plate through the fixing metal fittings. In addition, the GND pattern of the control board is similarly connected to the support via the fixing metal fitting. Here, the pillars and fixing metal fittings are made of aluminum and have good thermal and electrical conductivity, and the GND pattern is also made of aluminum or copper and has good thermal and electrical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/48H01L25/07H01L25/18
CPCH01L23/473H01L23/4006H01L2924/0002H01L25/162
Inventor 田中泰仁柴田美里
Owner FUJI ELECTRIC CO LTD