Summary of Safety Standards for Repurposing Batteries (汰役電池安全標準的內容與說明)

Abstract

Accompanied by the increase of electric vehicles, repurposing batteries will increase rapidly as well in the future. How to deal with these batteries has become an open-ended question. Some retired power batteries possess about 80% initial capacity. So they can be utilized once again, for example, to serve the batteries in the energy storage system. However, this may cause safety problems. Underwriters Laboratories (UL) published the safety standard for batteries for use in stationary, vehicle auxiliary power, and light electric rail applications in 2013 (UL 1973) to respond to the said issues. To promote wide-ranged applications, UL published the safety standard for repurposing battery evaluation in 2018 (UL 1974). In this paper, we summarize the contents of UL 1973 and UL 1974 as a reference to accelerate the industrial development of battery energy storage system. (This article has been published in the Monthly Journal of Taipower's Engineering 860 (2020) 35-44. Link: https://www.taipower.com.tw/tc/report.aspx?mid=86 ) ----- 隨著電動車輛的推廣與增加，汰役電池開始出現，未來數量將會快速增長，因此成為一個必須要解決的問題。這些動力電池在淘汰時，部分仍然有大約80% 的容量，顯然可以再次加以利用，例如做為儲能電池之使用。但由於是此類淘汰物品可能出現安全上的問題。Underwriters Laboratories (UL)公司在2013年提出電池於儲能系統的安全標準(UL 1973)來因應此問題，但為面對汰役電池推廣之需求，於2018年出版二次利用電池安全評估標準(UL 1974)。本文係參考UL 1973與UL 1974兩個標準，就電池儲能系統的發展現況，將這些標準加以整理與說明，供使用者參考，期能加速電池儲能系統的產業發展。 (本文已發表於台電工程月刊 860 (2020) 35-44, 連結: https://www.taipower.com.tw/tc/report.aspx?mid=86 )