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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 10450723 B1

PDFFull Text
Date of Patent:
Oct. 22, 2019

Filed:

Oct. 31, 2016

Hybrid construction machinery

Applicant:

Hitachi Construction Machinery Co., Ltd., Taito-ku, Tokyo, JP;

Inventors:

Tadashi Osaka, Tokyo, JP;

Ken Takeuchi, Tsuchiura, JP;

Seiji Ishida, Tsuchiura, JP;

Assignee:

Hitachi Construction Machinery Co., Ltd., Tokyo, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

James A Shriver, II

Assistant Examiner:

Steve Clemmons

Int. Cl.
CPC ...
B60K 6/28 (2007.10); E02F 9/20 (2006.01); H01M 10/625 (2014.01); H01M 10/615 (2014.01); H01M 10/633 (2014.01); H01M 10/6563 (2014.01); H01M 10/6568 (2014.01); H01M 10/613 (2014.01); E02F 9/08 (2006.01); E02F 9/22 (2006.01); B60L 50/15 (2019.01); B60L 50/16 (2019.01); B60K 1/00 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2075 (2013.01); B60K 6/28 (2013.01); B60L 50/15 (2019.02); B60L 50/16 (2019.02); E02F 9/0866 (2013.01); E02F 9/20 (2013.01); E02F 9/226 (2013.01); H01M 10/613 (2015.04); H01M 10/615 (2015.04); H01M 10/625 (2015.04); H01M 10/633 (2015.04); H01M 10/6563 (2015.04); H01M 10/6568 (2015.04); B60K 2001/005 (2013.01); B60K 2001/006 (2013.01); B60Y 2200/412 (2013.01); Y02T 10/7077 (2013.01);
Abstract

Hybrid construction machinery has a power storage apparatus that can be warmed up quickly and has a lengthened life. The machinery includes an electric motor assisting a prime mover in power and generating electric power. The power storage apparatus transfers electric power to and from the electric motor. A warm-up circuit circulates a warming medium in the vicinity of the power storage apparatus, and a control device controls circulation of the warming medium. On-board equipment state detection units detect on-board equipment states to estimate an output request for the power storage apparatus from the on-board equipment. Circulation of the warming medium is controlled based on a temperature of the power storage apparatus and a determination temperature for determining whether to circulate the warming medium in the warm-up circuit. The control device further varies the determination temperature according to a result of detection by the on-board equipment state detection units.

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