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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/63719

    Title: 以穿刺實驗探討鋰電池安全性之研究;Study on the safety of lithium-ion battery using the nail test
    Authors: 李育鑫;Lee,Yu-sin
    Contributors: 機械工程研究所碩士在職專班
    Keywords: 安全性;強制短路;穿刺測試;鋰離子電池;internal short;Lithium-ion battery;safety;short circuit
    Date: 2010-01-21
    Issue Date: 2014-05-08 15:26:58 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本研究為將鋰離子電池經由穿刺實驗後,短路電流經由穿刺用針流散時所產生的熱導致電池起火燃燒的現象,我們藉由針的內阻與電池電壓降與溫度變化,找出控制發熱高低的因子。
    ;This research using lithium-ion battery to do nail test. After the metal needle nailed into battery. Battery inside have made a very large current inside, and when this current go through the metal needle. Needle’s inside resistance and short circuit current will make metal some heat. The heat will make lithium-ion battery’s temperature grow up. Finally, the battery will make smoke and cause fire.
      During the research, we use S45C steel and SUS316 steel to made needle, and using different speed to do the test. We see the test result, we find the needle made by S45C cause battery’s temperature grow slowly than using needle by SUS316. As that we know, if we can control needle’s internal resistance lower, we can decrease the effects of needle.
      Using the result, we find method to increase battery’s safety. We get three method to increase battery’s safety : 1. Add some additive to decrease oxygen’s growth. 2. Increase seperator’s thickness or length. 3. Increase electrolyte’s flash point.
    Appears in Collections:[機械工程學系碩士在職專班 ] 博碩士論文

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