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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10615715 B1

PDFFull Text
Date of Patent:
Apr. 07, 2020

Filed:

Sep. 06, 2016

Power conversion device, cooling structure, power conversion system, and power supply device

Applicant:

Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;

Inventors:

Yasuaki Norimatsu, Tokyo, JP;

Akihiko Kanouda, Tokyo, JP;

Yuuichi Mabuchi, Tokyo, JP;

Takae Shimada, Tokyo, JP;

Mitsuhiro Kadota, Tokyo, JP;

Yuki Kawaguchi, Tokyo, JP;

Mizuki Nakahara, Tokyo, JP;

Akira Yonekawa, Tokyo, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Alex Torres-Rivera

Int. Cl.
CPC ...
H02M 7/00 (2006.01); H02M 7/49 (2007.01); H02M 7/48 (2007.01); H05K 7/20 (2006.01); H02S 40/32 (2014.01); H02M 3/335 (2006.01); H02M 7/493 (2007.01); H05K 7/14 (2006.01); H02M 1/00 (2006.01); H02M 7/487 (2007.01); H02M 3/28 (2006.01);
U.S. Cl.
CPC ...
H02M 7/49 (2013.01); H02M 3/33569 (2013.01); H02M 7/003 (2013.01); H02M 7/4807 (2013.01); H02M 7/493 (2013.01); H02S 40/32 (2014.12); H05K 7/209 (2013.01); H05K 7/20909 (2013.01); H02M 3/285 (2013.01); H02M 7/487 (2013.01); H02M 2001/0058 (2013.01); H02M 2001/0077 (2013.01); H05K 7/1432 (2013.01); H05K 7/20936 (2013.01);
Abstract

In a power conversion device, a power conversion unit includes a single-phase inverter on a secondary side of a resonant type converter that has an input of a direct current. A power conversion unit group is configured by connecting outputs of the single-phase inverters of a plurality of power conversion units in series. Respective phases of three phase alternate current are formed with the three power conversion unit groups housed in a power conversion device housing. The plurality of power conversion units constituting the power conversion unit group are disposed along a longitudinal direction of the power conversion device housing. The respective three power conversion unit groups are disposed at an upper stage, a middle stage, and a lower stage in a height direction of the power conversion device housing. The power conversion device housing has one end side in the longitudinal direction as output terminals of the three power conversion unit groups. The power conversion device housing has the other end side in the longitudinal direction where terminals of the three power conversion unit groups are connected in common.

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