Title:
SYSTEM AND METHOD FOR DIAGNOSING CONTACTOR LIFETIME BY USING CONTACTOR COIL CURRENT
Document Type and Number:
WIPO Patent Application WO/2019/074254
Kind Code:
A1
Abstract:
The present invention relates to a system and method for diagnosing contactor lifetime by using a contactor coil current, whereby, after a current value of a current contactor coil is determined on the basis of a resistance value and a voltage value of the contactor coil according to a real-time temperature, whether contactor lifetime has expired and an abnormal operation thus occurs can be previously diagnosed and predicted on the basis of whether an average current value when a corresponding contactor operates a preset number of times or more exceeds a threshold value.
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Inventors:
KIM JINHWAN (KR)
Application Number:
PCT/KR2018/011845
Publication Date:
April 18, 2019
Filing Date:
October 08, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
G01R31/327; G01R19/165; G01R19/32
Foreign References:
| KR20040059527A | 2004-07-06 | |||
| KR20170062739A | 2017-06-08 | |||
| JP2014500570A | 2014-01-09 | |||
| JPH0511277U | 1993-02-12 | |||
| KR20150089638A | 2015-08-05 | |||
| KR20170132631A | 2017-12-04 |
Other References:
See also references of EP 3644076A4
Attorney, Agent or Firm:
CHUNG, Soon-Sung (KR)
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