Identifying Promising Technologies of Electric Vehicles from the Perspective of Market and Technical Attributes

Abstract

The vigorous development of electric vehicles (EVs) can promote the green and low-carbon development of society and the environment. However, the research and development of EVs technology in China started late, and there are some problems such as relatively backward technology. In order to promote the decarbonization process of transportation systems, there is an urgent need for appropriate methods to identify promising technologies in the EVs field to guide the efficient development of innovation activities. This study proposes a novel approach to integrate the perspective of market and technical attributes to identify promising EVs technologies. Firstly, text mining tools are applied to extract review and technical keywords from online reviews and patents, and technical topics are summarized. Secondly, sentiment analysis is conducted to calculate user satisfaction based on online reviews, and then market demand of technical topics is obtained. Thirdly, social network centrality analysis, DEA–Malmquist model, and CRITIC method are employed to obtain technical features of technical topics based on patents. Finally, a portfolio map is constructed to analyze technical topics and identify promising EVs technologies. As the main driving force for the development and transformation of the automotive industry, the efficient identification of promising technologies in this field can provide strategic decision support for the development of EVs. This study aims to provide objective data and scientific guidance for related enterprises to carry out technological innovation activities.

Generation of Topical Educational Content by Estimation of the Number of Patents in the Digital Field

“…Further work may be devoted to the formation of the design of experiments to compare the quality of various approaches [19][20][21][22] to the identification of topical technologies, the selection and assessment of the effect of sources of keywords and patent activity data on the completeness of inclusion of topical technologies, as well as the selection of clustering methods to automate the identification of groups of evaluated technologies. In addition, the process of automating the construction of educational programs based on data from open sources can be considered in future research.…”

“…Patent analysis is used in many high-tech fields, such as automated driving [19], industrial engineering [20], tracking the evolution pathways of some nanogenerator technologies [21], and electric vehicle design [22].…”