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:
Apr. 16, 2013
Filed:
Apr. 12, 2011
Masayuki Kagoshima, Hiroshima, JP;
Masayuki Kagoshima, Hiroshima, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima-shi, JP;
Abstract
Provided is a hybrid working machine capable of performing battery charging control both for a working period and a standby period. The hybrid working machine includes a hydraulic actuator, an engine, a hydraulic pump driven by the engine to supply hydraulic fluid to the hydraulic actuator, a battery, a generator motor connected to the engine to serve as a generator by an output power of the engine to charge the battery and serve as a motor for assisting the engine by supply of an electric power from the battery, a battery monitor detecting a battery SOC, a controller which controls a charging power of the battery depending on the battery SOC, and a working state detector detecting a working state as information for discriminating between a working period during which the hydraulic actuator is actuated and a standby period during which the hydraulic actuator is not actuated. The controller limits the charging power in the standby period in comparison with in the working period.