手機用硬式方型鋰離子電池熱失控特性研究

Study on the Thermal Runaway of Hard Prismatic lithium-ion Batteries Used in Smart Phones

杜逸興(Yih-Shing Duh) ； 林凱旋(Kai Hsuan Lin) ； 高振山(Chen-Shan Kao)

《勞動及職業安全衛生研究季刊》 26卷3期 (2018/09) Pp. 151-160

摘要

本研究利用密閉測試儀將智慧型手機用硬式方型鋰離子電池，充電至飽電狀態下加熱至過熱狀況，使鋰離子電池產生熱失控。使用蘋果的iPhone 5, iPhone 6, Samsung Note 3, Samsung S5四款手機用硬式方型鋰離子電池。失控最高溫度均超過電解液成份有機碳酸酯的自燃溫度(auto-ignition temperature, AIT)。Samsung S5的電池放熱起始溫度最低約在117˚C。四種電池的 最大升溫速率介於4,422至11,860˚Cmin^(-1)之間。Samsung Note 3的硬式方型鋰離子電池熱失控時表現出最嚴重的熱危害，最高溫度與最大升溫速率高達675.6˚C and 11,860.0˚Cmin^(-1)。

關鍵字

硬式方型鋰離子電池 ； 熱失控 ； 密閉測試 ； 自加速放熱 ； 智慧型手機

並列摘要

In this study, we demonstrate firstly the application of the confinement test to track the thermal runaway in hard prismatic lithium-ion batteries used in smart phones. Four kinds of hard prismatic lithium-ion batteries used in iPhone 5, iPhone 6, Samsung Note 3, and Samsung S5 at full-charged state have been studied. All the maximum temperatures within the batteries under thermal runaway exceed the auto-ignition temperature (AIT) of organic carbonates. Lithium-ion battery used in Samsung S5 shall carry the most unstable feature with an exothermic onset temperature as low as 117˚C. Maximum self-heat rates are determined to be in the value from 2,736 to 11,860˚Cmin^(-1). The battery used in Samsung Note 3 displays the worst case scenario by possessing the maximum temperature and maximum self-heat rate reach the extremity of 675.6˚C and 11,860.0˚Cmin^(-1).

並列關鍵字

Hard prismatic lithium-ion battery ； Thermal runaway ； Confinement test ； Self-heat rate ； Smart phone

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