Title:
METHOD FOR DETECTING LEAKAGE CURRENT OF BATTERY PACK OF UNMANNED VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/218721
Kind Code:
A1
Abstract:
A method for detecting a leakage current of battery pack of an unmanned vehicle, comprising: (1) taking an electric chassis as a reference point, and when both Sa and Sb are not connected, setting the voltages at points a and b as Va and Vb respectively, and obtaining the correlation between the voltage and the resistance; (2) closing Sa and measuring the voltage V'a at point A after the corresponding resistor of Sa is connected; (3) opening Sa, closing Sb, and measuring the voltage V'b at point B after the corresponding resistor of Sb is connected; (4) forming simultaneous equations, solving same to obtain currents Ipos and Ireg of the battery pack which is directly shorted to the ground at the most negative and most positive points; (5) comparing the magnitudes of Ipos and Ireg, and taking the larger one as the maximum leakage current IL = max{Ipos, Ireg} of the battery pack; and (6) the battery pack of the unmanned vehicle being insulated when the maximum leakage current is less than a certain threshold value.
Inventors:
WU JIANGUO (CN)
Application Number:
PCT/CN2017/090680
Publication Date:
December 06, 2018
Filing Date:
June 29, 2017
Export Citation:
Assignee:
SHENZHEN JING ZHOU TECH CO LTD (CN)
International Classes:
G01R31/02
Foreign References:
| CN101779133A | 2010-07-14 | |||
| CN1719682A | 2006-01-11 | |||
| CN106546801A | 2017-03-29 | |||
| CN102205800A | 2011-10-05 | |||
| CN103576044A | 2014-02-12 | |||
| JP2014119421A | 2014-06-30 | |||
| JP2013024694A | 2013-02-04 |
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