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.:
Date of Patent:
Sep. 15, 2026
Filed:
Jul. 26, 2021
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Takashi Kamijoh, Tokyo, JP;
Ken Takeuchi, Ibaraki, JP;
Itaru Naya, Ibaraki, JP;
Kenta Tanigaki, Ibaraki, JP;
Takeshi Inoue, Tokyo, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A battery excavatoras an electric powered working machine includes a secondary battery, a battery management unitthat manages the secondary battery, and a controllerthat controls a normal charge or a diagnostic charge for the secondary battery. The controllerincludes: a diagnostic charge recommendation determination unitthat determines whether to recommend the diagnostic charge or not based on an operation history of the secondary battery output from the battery management unit; and a diagnostic charge execution determination unitthat determines whether to execute the diagnostic charge or not based on a state of the secondary battery output from the battery management unit, an estimated charge period necessary for the diagnostic charge, and a site work plan including a work start time, when the diagnostic charge is determined to be recommended.