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標題: | 電極材料參數簡易量測法及電池組散熱分析 A Simple Method for Measuring Electrode Parameters and Analyzing Heat Transfer in Battery Pack |
作者: | WEI-TSE WENG 翁瑋澤 |
指導教授: | 陳國慶(Kuo-Ching Chen) |
關鍵字: | 鋰電池,半電池,鋰原子擴散係數測定,反應常數測定,電池組散熱, lithium-ion battery,half-cell,diffusion coefficient,rate constant,radiation of battery pack, |
出版年 : | 2016 |
學位: | 碩士 |
摘要: | 環保意識上升導致社會大眾期望使用更少的石化燃料,所以如何更有效率的
使用能量將是非常重要的一件事。而鋰電池是目前非常具有優勢的儲能裝置,故世界各國都在積極的研發鋰電池,以及思考如何將鋰電池使用在更多的用途上。但對於不同環境下使用鋰電池須要考慮的條件也不同,比起須要消耗大量時間與金錢的實驗,若是能建構一套鋰電池模擬技術將可降低研發所須的成本。本論文探討之內容有二個議題:電極材料參數的測定、電池模組散熱分析。以期待能夠增加我們團隊模擬鋰電池之能力。 對於電極材料參數我們發展出一套測定與計算方式,在使用半電池的實驗數據下可以計算出此電極材料的鋰原子擴散係數與反應常數。首先我們擷取文獻上的數據套用到本文所提出之方法計算,發現此方法所計算出之數值與文獻相近,驗證了此法的可行性。接著我們與工研院合作,由工研院提供半電池樣品讓我們作參數的測定。且計算出來的數值再代入多孔電極理論中對全電池作一模擬,發現能夠準確的描述放電曲線。表示此法計算出的電極材料參數有一定的準確性。 在電池模組散熱分析方面我們先建立出單顆電池放電時的溫度上升曲線,並與工研院的實驗數據作驗證。溫度上升曲線驗證後,我們將各種電流的發熱量提取出來使用在電池組熱傳模型上面,以模擬不同電流下電池組的溫度分佈。並且探討氣冷式散熱與液冷式散熱的溫度上升情況,對於不同的使用情況我們可以給予散熱方式的建議。 Rising environmental awareness has led to the public's desire to use less fossil fuels, so how to use energy more efficiently will be a very important. And lithium battery is a very dominant energy storage device, so all countries in the world are actively research and development of lithium batteries, as well as thinking about how to use the lithium battery in more use. But for different environments the use of lithium batteries need to consider the conditions are also different. Compared to the need to consume a lot of time and money in the experiment, if we can build a set of lithium battery simulation technique will be able to reduce the cost of research. The content of this thesis is discussed in two topics: the measuring of electrode material parameters and the analysis of the heat dissipation of the battery module. For the electrode material parameters, we develop a set of measurement and calculation method. The diffusion coefficient of the lithium atom and reaction constant can be calculated with the experimental data of the half cell. First we capture literature data applied to the proposed method, found the values calculated by this method and the literature are similar, to verify the feasibility of this method. Then we have a cooperation with ITRI, which providing the half-cell sample and let us measuring the parameters. Finally calculated the value then substituted into the porous electrode theory of whole cell as a simulation, found that accurately describes the discharge curve. It is indicated that the parameters of the electrode materials calculated by this method are accurate. In the battery radiating module analysis we first establish a single battery discharge temperature rise curve, and the ITRI's experimental data for validation. After the temperature rise curve is verified, we can extract the heat source of many kinds of current to use in the battery pack heat transfer model to simulate the temperature distribution of the battery pack under different current. And to investigate the air-cooled cooling and liquid cooling type heat radiation temperature rise, regarding the different use cases we can give advice to radiation. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49679 |
DOI: | 10.6342/NTU201602658 |
全文授權: | 有償授權 |
顯示於系所單位: | 應用力學研究所 |
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