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9 results on '"Zhaopu Zhang"'

1. Research on the Combined Control Strategy of Low Temperature Charging and Heating of Lithium-Ion Power Battery Based on Adaptive Fuzzy Control

Author

Haitao Min, Boshi Wang, Weiyi Sun, Zhaopu Zhang, Yuanbin Yu, and Yanzhou Zhang

Subjects
low-temperature charging, Li-ion battery, combined control strategy, temperature-acceptable charging current curve, adaptive fuzzy control strategy, Technology
Abstract

A low temperature environment will lead to the decrease of chemistry reaction rate and increase of the internal resistance of the lithium battery. In addition, the excessive charging current will cause the lithium to separate out and even the permanent attenuation of battery capacity. In order to solve these problems, this paper proposes a low-temperature charging heating combined control strategy, which takes the temperature acceptable charging current of the battery at low temperature as the charging current constraint and the maximum output power of the system as the power constraint. Firstly, a scheme of combined charging and heating control system is put forward. Secondly, the low temperature charging control strategy based on adaptive fuzzy control is established and then the model is simulated and analyzed in MATLAB software. At last, a Chroma 72,001 charge and discharge tester is used to conduct a low temperature test on 18,650 lithium iron phosphate battery monomers. The results show that the low-temperature charging control strategy proposed in this paper has a more stable temperature control effect on the battery, the constant current charging time of the battery is reduced by 14% compared with the traditional threshold control method, and the overall charging energy consumption is reduced by 5.6%.

Published
2020
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9. How does COVID-19 emergency cognition influence public pro-environmental behavioral intentions? An affective event perspective

Author

Zhaopu Zhang, Ke Shang, Lingyun Mi, Ting Xu, Hang Yang, Tao Lv, Jingjing Zhao, and Yaning Qiao

Subjects
Economics and Econometrics, Coping (psychology), media_common.quotation_subject, 0211 other engineering and technologies, Affective events theory, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, Structural equation modeling, Structural equation model, Full Length Article, 021108 energy, Waste Management and Disposal, 0105 earth and related environmental sciences, media_common, Mechanism (biology), Perspective (graphical), COVID-19, Event cognition, Cognition, Public health emergency, Pro-environmental behavioral intentions, Damages, Introspection, Psychology, Social psychology
Abstract

Social impacts and serious damages caused by the COVID-19 pandemic have resulted in public introspection on the issue of ecological environmental protection. However, whether the public cognition of COVID-19 can promote pro-environmental behavioral intentions (PEBI) has not yet been determined; this is crucial for studying the ecological significance of the pandemic. Based on the affective events theory (AET), this study investigated the mechanism by which COVID-19 emergency cognition influences public PEBI. Following an analysis of 873 public questionnaires, the results reveal that public cognition of COVID-19 emergency can significantly promote PEBI. Among them, the effect of emergency coping is stronger than that of emergency relevance. Besides, the positive and negative environmental affective reactions aroused by COVID-19 pandemic play a mediating role between the emergency cognition and PEBI. Moreover, the positive environmental affective reactions show a stronger positive effect on household-sphere PEBI. However, the negative environmental affective reactions are more prominent in promoting public-sphere PEBI. This research aims to bridge a research gap by establishing a link between COVID-19 pandemic and PEBI. The findings can provide useful recommendations for policymakers to find the opportunity behind the COVID-19 emergency to promote public PEBI., Graphical abstract Image, graphical abstract

Published
2021
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