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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 신치범
- 발행연도
- 2013
- 저작권
- 아주대학교 논문은 저작권에 의해 보호받습니다.
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As battery temperature greatly affects performance, safety, and life of Li-ion batteries in plug-in and electric vehicles under various driving conditions, automakers and battery suppliers are paying increased attention to thermal management for Li-ion batteries in order to reduce the high temperature excursions that could decrease the life and reduce safety of Li-Ion batteries. Currently, the lack of fundamental understanding of the heat generation mechanism due to complex electrochemical phenomena prohibits accurate estimation of the heat generation within Li-ion cells under various operating conditions. Heat from Li-ion batteries can be generated from resistive dissipation, the entropy of the cell reaction, heat of mixing, and other side chemical reactions. Each of these can be a significant source of heat under a range of circumstances.
The heat source is modeled as a combination of the heat generations due to electrochemical reactions and electrical resistance within the cell as a function of electric current, state of charge (SOC), and cell temperature. The electrochemical heat generation is computed based on the electrochemical discharge model of the battery. The electrical heating rate is calculated by the electrical current flow, which can be evaluated based on the potential distributions on the electrodes obtained from the electrochemical modeling. The model is validated by the comparison of the modeling results with the experimental measurements. The temperature distributions of the battery during discharge from the thermal model are in good agreement with those from the experimental measurements at the various discharge rates and charge rates.
The heat source is modeled as a combination of the heat generations due to electrochemical reactions and electrical resistance within the cell as a function of electric current, state of charge (SOC), and cell temperature. The electrochemical heat generation is computed based on the electrochemical discharge model of the battery. The electrical heating rate is calculated by the electrical current flow, which can be evaluated based on the potential distributions on the electrodes obtained from the electrochemical modeling. The model is validated by the comparison of the modeling results with the experimental measurements. The temperature distributions of the battery during discharge from the thermal model are in good agreement with those from the experimental measurements at the various discharge rates and charge rates.
목차
Abstract ……………………………………………………..Table of contents ……………………………………………………..List of figures ……………………………………………………..List of tables ……………………………………………………..Chapter 1 Introduction1.1 Lithium-ion battery1.2 Thermal effect in lithium-ion battery1.3 Thermal modeling1.4 Dissertation OutlineChapter 2 Experimental2.1 Lithium-ion battery cell2.2 Experimental apparatus2.3 Discharge test2.4 Charge test2.5 Power testChapter 3 Mathematical modelChapter 4 Modeling Results and Discussion4.1 Discharge behavior4.2 Temperature dependence of discharge behavior4.3 Charge behavior4.4 Constant-power operationChapter 5 Conclusions and SummaryBIBLIOGRAPHY
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