Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CONSTRUCTION MACHINERY
Document Type and Number:
WIPO Patent Application WO/2017/199561
Kind Code:
A1
Abstract:
A main controller (24) and a hybrid controller (22) control an engine (9), an assist power generating motor (13), a hydraulic pump (10), and a power storage device (16). In this case, the hybrid controller (22) comprises a state recovery unit (23) that performs state recovery for the power storage device (16). The state recovery unit (23) limits the power to the hydraulic pump (10) when a state function that changes due to the power storage device (16) charging and discharging repeatedly, specifically, the current integrated value ratio of the power storage device (16) exceeds the prescribed threshold value (L1%). In this manner, the state recovery unit (23) performs state recovery of the power storage device (16).

Inventors:
NAYA Itaru (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
IMURA Shinya (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
HITA Masafumi (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
ISHIDA Seiji (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
TAKEUCHI Ken (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
Application Number:
JP2017/010086
Publication Date:
November 23, 2017
Filing Date:
March 14, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (16-1, Higashiueno 2-chome Taito-k, Tokyo 15, 〒1100015, JP)
International Classes:
E02F9/20; H01M10/42; H01M10/44; H01M10/48; H02J7/00
Foreign References:
JP2006149181A2006-06-08
JP2013002540A2013-01-07
Attorney, Agent or Firm:
HIROWA PATENT FIRM (4F. Nishishinjuku Koide Bldg, 1-3 Nishishinjuku 3-chome, Shinjuku-k, Tokyo 23, 〒1600023, JP)
Download PDF: