Title:
SYSTEM FOR WIRELESS CHARGING BETWEEN CRANE AND TRACTOR
Document Type and Number:
WIPO Patent Application WO/2020/197079
Kind Code:
A1
Abstract:
The present invention relates to a system for wireless charging between a crane and a tractor. The crane comprises a feeding unit and an inverter for supplying power to the feeding unit. The inverter comprises a first communication unit. The tractor comprises: a collecting unit for wirelessly receiving charging power from the feeding unit; a battery management system (BMS) for displaying the battery condition; and a second communication unit. The collecting unit comprises: a collecting pad which is attached to a side surface of the tractor and comprises a collecting coil; and a rectification unit for rectifying power delivered to the collecting pad. The feeding unit comprises: a position sensor for detecting the position of the collecting pad; a feeding pad which is attached to a side surface of the crane and comprises a feeding coil; a first driving unit and a first controller, to which the feeding pad is fixed such that the feeding pad extends toward the collecting pad; and a second driving unit and a second controller, to which the first driving unit is fixed such that the first driving unit is moved in the direction of traveling of the tractor. If the tractor enters the crane operating domain, the second controller detects the position of the collecting pad in real time by using the position sensor, and controls the second driving unit such that position of the collecting pad is aligned with that of the feeding pad. The first controller controls the first driving unit so as to extend the feeding pad such that a constant distance is maintained between the feeding pad and the collecting pad. Accordingly, power is wirelessly delivered to the tractor, thereby charging the battery.
More Like This:
Inventors:
CHO JUNG GOO (KR)
PARK JONG HAN (KR)
LIU HYO YOL (KR)
PARK JONG HAN (KR)
LIU HYO YOL (KR)
Application Number:
PCT/KR2020/001646
Publication Date:
October 01, 2020
Filing Date:
February 05, 2020
Export Citation:
Assignee:
GREEN POWER CO LTD (KR)
International Classes:
B60L53/38; B60L53/12; B60L53/30; B60L53/302; F16H19/04; H01F27/10; H01F27/28; H01F38/14; H02J50/12
Foreign References:
| KR20140096767A | 2014-08-06 | |||
| KR101830454B1 | 2018-03-29 | |||
| KR20160146720A | 2016-12-21 | |||
| KR20140025355A | 2014-03-04 | |||
| KR20100109669A | 2010-10-11 | |||
| JP2011167042A | 2011-08-25 | |||
| KR102059433B1 | 2019-12-27 |
Attorney, Agent or Firm:
PLUS INTERNATIONAL IP LAW FIRM (KR)
Download PDF: