Title:
ELECTROHYDRAULIC SYSTEM HAVING IMPROVED ELECTRICAL EFFICIENCY
Document Type and Number:
WIPO Patent Application WO/2022/234926
Kind Code:
A1
Abstract:
The present invention relates to an electrohydraulic system for heavy equipment and, more specifically, to an electrohydraulic system comprising: a hydraulic pump which is operated by a battery and a motor; a supply line which supplies working fluid supplied by the hydraulic pump; a plurality of actuators; and a controller which controls the motor and the actuators, wherein the electrical efficiency of the electrohydraulic system is significantly improved. Specifically, the present invention provides an electrohydraulic system which comprises: a plurality of motors and a plurality of hydraulic pumps corresponding to the respective motors; and a main control valve (MCV) which is supplied with working fluid from the plurality of hydraulic pumps and supplies the working fluid to a plurality of actuators, wherein electrical efficiency is improved by performing efficient control according to operation loads, operation temperatures, supply flow rates, etc. to minimize power consumption of the motors, whereby the operation time of the system is significantly increased.
Inventors:
CHOI KIL HO (KR)
LEE DONG HEE (KR)
CHOI ROCK JUN (KR)
LEE DONG HEE (KR)
CHOI ROCK JUN (KR)
Application Number:
PCT/KR2022/001266
Publication Date:
November 10, 2022
Filing Date:
January 25, 2022
Export Citation:
Assignee:
PYUNG KANG BIO IT MECHATRONICS CO LTD (KR)
International Classes:
F15B21/08; F15B1/26; F15B11/17; F15B13/08; H02P5/74
Foreign References:
| JP2008063902A | 2008-03-21 | |||
| JP2003102106A | 2003-04-04 | |||
| JP2001012404A | 2001-01-16 | |||
| KR20190105709A | 2019-09-18 | |||
| KR102288976B1 | 2021-08-11 |
Other References:
See also references of EP 4112947A4
Attorney, Agent or Firm:
JEONG, Kyeong Hoon (KR)
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