國際能源署 (International Energy Agency，簡稱IEA) 長期關注全球電動車之發展，並且非常肯定充滿活力的電動車市場，再者因潔淨能源環保觀念的抬頭、政策的激勵、技術的改進、基礎設施的建設等各方面的配合，導致消費者在購車時，更加偏愛電動車，是以目前電動車市場正進入大幅度成長的階段。本研究以M-TRENDS專利檢索及資料分析管理平台做為檢索及資料處理之工具，透過文獻閱讀及專利資料分析篩選關鍵字，並以檢索電動車關鍵領域技術之核准公告專利數量做為衡量的指標，包括歷年專利件數分析、國際專利分類號分析、國家別分析及公司別分析等 4 個部分，最後透過羅吉斯成長模型 (Logistic Growth Model) 來預測其技術生命週期。研究結果顯示電動車關鍵領域與重要副技術之電池技術 (Battery technology) 、充電技術 (Charging technology) 以及子技術之電池連接單元(Battery connection unit) 、電池管理系統 (Battery Management System) 、電池框架結構 (Battery frame structure) 、電池熱管理系統 (Battery thermal management system) 、交流充電 (AC charging) 、直流充電 (DC charging) 、充電樁 (Charging station) 等技術，目前正處於技術生命週期成熟期初期。本研究發現電動車領域關鍵技術呈現均衡發展、關鍵技術領域相當聚焦、專利佈局以亞洲國家表現優越及推測關鍵領域技術前景佳，提供電動車產業的專利現況及未來規劃的參考方向。

The International Energy Agency (IEA) has been paying attention to the development of global electric vehicles for a long time, and is very sure of the vibrant electric vehicle market. Moreover, due to the rising concept of clean energy and environmental protection, policy incentives, technological improvements, and infrastructure improvements, the cooperation of construction and other aspects has led consumers to prefer electric vehicles when buying cars. Therefore, the current electric vehicle market is entering a stage of substantial growth. This study uses the M-TRENDS patent retrieval and data analysis management platform as a retrieval and data processing tool, through literature reading and patent data analysis to filter keywords, and to retrieve the number of patents approved and announced in key areas of electric vehicle technology as a measure. Indicators include the analysis of the number of patents over the years, the analysis of the International Patent Classification Number, the country analysis and the company analysis. Finally, the Logistic Growth Model is used to predict the technology life cycle. The research results show that the key areasof electric vehicles and important secondary technologies are battery technology, charging technology, and sub-technologies such as battery connection unit, battery management system, battery frame structure, battery thermal management system, AC charging, DC charging, charging station and other technologies are currently in the early stage of the mature stage of the technology life cycle. This study found that the key technologies in the field of electric vehicles are developing in a balanced manner, the key technology areas are quite focused, the patent layout is dominated by Asian countries, and it is speculated that the technology prospects in key areas are good, providing a reference for the current patent status and future planning of the electric vehicle industry.

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