Power conversion device

Patent metadata

Field	Value
Publication number	US-2017194873-A1
Application number	US-201515325949-A
Country	US
Kind code	A1
Filing date	Jun 12, 2015
Priority date	Aug 22, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

A power converter includes: a base conductor, an electrically heating member which is provided on the base conductor, a noise reduction capacitor of flat plate-shape in which via an insulator, a plurality of first electrodes and second electrodes are alternately layered, on one surface, the first electrode in an outermost layer is exposed and on another surface, the second electrode in an outermost layer is exposed, a relay conductor which is electrically connected to other members from the electrically heating member via the noise reduction capacitor, and the second electrode in an outermost layer of the noise reduction capacitor is face-joined to a face of the base conductor at a side where the electrically heating member is provided and the first electrode in an outermost layer and the relay conductor are face-joined.

First claim

1 . A power converter comprising a base conductor, an electrically heating member which is provided on the base conductor, a noise reduction capacitor of flat plate-shape in which via an insulator, a plurality of first electrodes and second electrodes are alternately layered, on one surface, the first electrode in an outermost layer is exposed and on another surface, the second electrode in an outermost layer is exposed, and a relay conductor of plate-shape which is electrically connected to other members from the electrically heating member via the noise reduction capacitor,
wherein the second electrode in an outermost layer of the noise reduction capacitor is face-joined to a face of the base conductor at a side where the electrically heating member is provided so as to be affixed to the base conductor and the first electrode in an outermost layer and the relay conductor are face-joined.

2 . The power converter according to claim 1 , wherein the electrically heating member is a semiconductor module.

3 . The power converter according to claim 1 , wherein the electrically heating member is a coil.

4 . The power converter according to claim 1 , wherein a conductive board which is affixed to the base conductor is provided, by face-joining the second electrode in the outermost layer to the conductive board, the second electrode in the outermost layer and the base conductor are face-joined indirectly.

5 . The power converter according to claim 1 , wherein a conductive board which is affixed to the base conductor is provided, the conductive board constitutes the second electrode in the outermost layer.

6 . The power converter according to claim 1 , wherein instead of face-joining the first electrode in the outermost layer and the relay conductor, the relay conductor also functions as the first electrode in the outermost layer.

7 . The power converter according to claim 2 , wherein the semiconductor module comprises a positive pole side semiconductor element and a negative pole side semiconductor element which constitute a semi-bridge circuit which is connected to a power converter circuit,
the relay conductor is connected to a positive pole side terminal of the positive pole side semiconductor and a negative pole side terminal of the negative pole side semiconductor, individually, and a snubber component is connected between each of the noise reduction capacitors or between each of the relay conductors.

8 . The power converter according to claim 2 , wherein a semiconductor element which is provided in the semiconductor module is formed of wide bandgap semiconductor.

9 . The power converter according to claim 8 , wherein the wide bandgap semiconductor is a semiconductor selecting from silicon carbide, a gallium nitride based material and diamond.

Assignees

• Mitsubishi Electric Corp

Inventors

• Takahashi Keita
• Sakata Kazuki
• Deguchi Yoshiyuki
• Yano Takuto
• Takikita Mamoru
• Awane Kazutoshi
• Nakajima Koji
• Mitsui Takao
• Nakano Kosuke
• Tamura Masayoshi
• Sakai Masashi

Classifications

• H10W90/00

  Package configurations · CPC title

• H10W42/20

  protecting against electromagnetic or particle radiation, e.g. light, X-rays, gamma-rays or electrons · CPC title

• H10W40/22

  characterised by their shape, e.g. having conical or cylindrical projections · CPC title

• H10W40/10

  Arrangements for heating · CPC title

• H02M7/537

  using semiconductor devices only, e.g. single switched pulse inverters · CPC title