利用卡扣結構改善鋰電池組殼具封裝強度之研究

A Study on Improvement of Lithium Battery Pack Casing Strength Using Latch and Hook Structure

吳志遠(Chih-Yuan Wu)

指導教授 ： 鍾文仁

中原大學/工學院/機械工程研究所/碩士(2012年)

https://doi.org/10.6840/cycu201200128

摘要

本研究乃針對卡勾跟卡槽應用於鋰電池封裝進行研究分析。近幾年來在鋰電池封裝的領域中，使用卡扣技術取代溶劑粘膠接合技術及其他的粘接工藝已是一種趨勢，卡扣結構對於鋰電池封裝來說是一種先進結合技術。
隨著這幾年市場競爭激烈，鋰電池機構設計者為了追求高品質產品與降低生產成本衍生出許多變通的方法。使用卡扣結合鋰電池來取代傳統溶劑粘膠接合(膠合結構)就是一種降低成本的最佳範例，使用卡扣結構應用在鋰電池封裝上，可以減少使用溶劑粘膠的成本又可以有良好組裝功能，設計良好的卡扣甚至能不用治具固定就能封裝殼具。舉例來說，像是生活中最常見的手機上下蓋塑膠殼的結合，也是利用卡扣方式來設計；使用卡扣結合可以把兩個結構件緊緊結合，在卡扣形狀與品質上突破求得更好的強度穩定性，就能減少耗費大量時間與金錢的風險。
本文利用田口法來取得卡扣應用於鋰電池組封裝的最佳化參數，由於卡扣的材質和形狀是影響卡勾強度與穩定性最大的因素，卡扣設計需要韌性避免受外力衝擊斷裂，目前業界常用的PC材質擁有韌性強的性質，符合此一目標，如果能熟悉這些材料特性，將能更好地利用卡扣技術。在本研究中各個設計因子應用田口法的實驗方法求出最佳化的參數再進行測試，藉由直交表得到的第一種卡勾型式以及使用LG GN1008RF的塑膠原料、勾配量0.6 mm、間距12 mm、卡勾寬度6 mm、肉厚0.7 mm的最佳的數據，並藉由落摔試驗及靜電試驗來驗證最佳化後的設計參數，測試後可通過試驗，達到應用的最優化，並幫助鋰電池組機構設計者藉由本研究改善封裝強度問題，使其縮短鋰電池組設計開發的時間與降低成本，藉由本研究探討出的結果應用在公司同仁在設計鋰電池封裝上當作參考，進而提高設計者的經驗與提升產業競爭力。

關鍵字

卡勾 ； 鋰電池

並列摘要

This research paper is focus on Lithium-ion battery packs’ mechanical design and assembly by using latch and hook ideas. Recently battery pack assembled using latch and hook as up today technologies to replaced old traditional chemical binder and other assembly method.
For the design concept was set on review existing products and calculated data, more over with several years of my participle design & assembly experiences. In this research paper I had take in to account with plastic tooling design and plastic injection know how to define pack latch and hook designation. Looking through by latch and hook related location and engineering plastic materials conclude a best formula for design index.
The analysis was follow and used Taguchi method to done experiments. The main variants to affect pack toughness were latch shape and materials. More over to causes latches strength and stability was the plastic resin toughness. In current industrial mass production, commonly used engineering plastics were Polycarbonate (PC) and others. This material had strong toughness characteristics. If we can control those factors, the latch and hook technology can be more easily optimize its performance. Thus engineers can design packs latch to gain the most efficiency on free fall protections. This experiment were research thought variances design factors and set up individual partial optimize data and applied Taguchi method to gain best sub solution data and prefer drive test. Final used the best individual drive test result to conclude a sequence for the best final solution. The experiments were select by first type of hook and latch, fallow by resin type LG GN1008RF. Detail spec. were hook and latch holding space 0.6mm, space between other hook and latch 12mm, latch width 6mm, plastic thickness 0.7mm to be the best matrix solution. From this research it helps battery pack mechanical design engineers experience real issues and can focus which factor for improvement solutions, thus reduced the cost and time on new projects results to prompt companies’ margin and business competition.

並列關鍵字

hook ； Lithium Battery Pack

參考文獻

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