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리튬이온 배터리의 열폭주 이상징후 감지를 위한 측정 변수 특성 분석
임병주,조성훈,이가람,최석민,박창대 한국수소및신에너지학회 2022 한국수소 및 신에너지학회논문집 Vol.33 No.1
To detect anomaly signs of thermal runaway in advance, this study analyzed the signals from various sensors installed in lithium-ion batteries. The thermal runaway mechanism was analyzed, and measurement variables for anomalies of a battery cell were surface temperature, strain, and gas concentration. The changes and characteristics of three variables during the thermal runaway process were analyzed under the abuse environment: the overheat and the overcharge. In experiment, the thermal runaway of the battery proceeded in the initial developing stage, the outgassing stage, and the ignition stage. Analysis from the measured data indicated that the suitable variable to detect all stages of thermal runaway is the surface temperature of the battery, and surface strain is alternative.
임병주 대한류마티스 건강전문학회 1995 근관절건강학회지 Vol.2 No.2
This deductive-survey study was undertaken in order to examine if there were relationship between causal perceptions, expectation for the cure and compliance. The sampling method was a non-probability, purposive sampling technique. The participants of this study was 195 volunteers 1) who have been diagnosed as having chronic arthritis and 2) who were at the rheumatis center of one university hospital in Seoul between September 18th to September 25th 1989. This instruments used for this study were the compliance scale developed by Choi and causal perception scale developed by the researcher. Analysis of data was done using pass analysis, Pearson correlation coefficient. The result of study were as follow : Hypothesis 1 : "It's correlated that causal perception, expectation for cure and compliance" was accepted.(F=4.85, p<.05) Hypothesis 2 : "It's correlated that causal perception, expectation for cure and with depression" was partially accepted. Total age group-worry and anxiety(r=.1580, p<.001) After 40-function of immunity(r=.1731, p<.05) worry and anxiety(r=.1730, p<.001) In the relationship between general characteristics and the variables, age group correlated with compliance and causal perception.