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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 12098522 B1

PDFFull Text
Date of Patent:
Sep. 24, 2024

Filed:

Jun. 25, 2019

Electricity storage device management computer for a construction machine

Applicant:

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

Inventors:

Akira Watanabe, Ushiku, JP;

Ken Takeuchi, Kasumigaura, JP;

Itaru Naya, Tsuchiura, JP;

Assignee:

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

Attorney:

Crowell & Moring LLP

Primary Examiner:

James J Lee

Assistant Examiner:

Andrew Sang Kim

Int. Cl.
CPC ...
E02F 9/20 (2006.01); B60L 58/10 (2019.01); B60L 58/12 (2019.01); E02F 9/22 (2006.01); E02F 9/26 (2006.01); G07C 5/02 (2006.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01); H02J 13/00 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2091 (2013.01); B60L 58/10 (2019.02); B60L 58/12 (2019.02); E02F 9/26 (2013.01); G07C 5/02 (2013.01); H01M 10/425 (2013.01); H01M 10/48 (2013.01); H01M 10/482 (2013.01); H02J 7/00032 (2020.01); H02J 7/0013 (2013.01); H02J 13/00006 (2020.01); B60L 2200/40 (2013.01); E02F 9/2228 (2013.01); E02F 9/2285 (2013.01); E02F 9/2296 (2013.01); H01M 2010/4271 (2013.01); H01M 2010/4278 (2013.01); H01M 2220/20 (2013.01); H02J 2310/40 (2020.01);
Abstract

A management server receives a maximum value and a minimum value of the respective voltages in a plurality of battery cells configuring an electricity storage device of a hydraulic excavator from the hydraulic excavator, and stores the values in a storage device. Discharge characteristics of the electricity storage device are stored in the storage device in the management server. A battery state estimation calculating unit in the management server calculates an estimation maximum value and an estimation minimum value of cell voltages in the present or in the future by adding the discharge characteristics stored in the storage device to the latest maximum value and the latest minimum value of the cell voltages stored in the storage device. A management information producing unit outputs information based upon the estimation maximum value and the estimation minimum value of the cell voltages calculated in the battery state estimation calculating unit.

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