Energy Storage Science and Technology ›› 2023, Vol. 12 ›› Issue (8): 2680-2692.doi: 10.19799/j.cnki.2095-4239.2023.0188

• Energy Storage Patent Analysis • Previous Articles     Next Articles

Topic identificationevolutionand risk analysis of electrochemical energy storage battery technology

Libo ZHANG(), Gege WANG   

  1. Energy Soft Science Research Center, Nanjing University of Aeronautics and Astronautics, College of Economics and Management, Nanjing 211106, Jiangsu, China
  • Received:2023-03-29 Online:2023-08-05 Published:2023-08-23
  • Contact: Libo ZHANG E-mail:zlbzhang@163.com

Abstract:

The research and development (R&D) of electrochemical energy storage battery technology has attracted worldwide attention as a promising energy storage solution. However, a comprehensive and scientific analysis of its key technology topics, future R&D trends, and risk levels has been lacking owing to the complexity and extensiveness of this field. This study aims to bridge this gap using patent data to macroscopically analyze the application characteristics, identify technical topics using the latent Dirichlet allocation topic model, analyze topic evolution based on the post-discrete method, and assess the technology development risks using the Bayesian network model. The results show that there are 15 distinct technical topics within the field of electrochemical energy storage battery technology. The evolution trend of these topics is divided into ascending, stationary, and declining types. Analyzing patent quantities, industrial chains, and battery types, the global R&D efforts in this field show a continuous growth trend. Raw material-related technologies upstream of the electrochemical energy storage battery industry chain are the key field of R&D, although saturation or bottlenecks may be encountered. Meanwhile, processing-related technologies in the midstream field are gradually becoming a hot R&D direction. Furthermore, considering the industrial chain perspective, the assessment of technological development risks in the midstream processing field indicates a medium-level risk. Key risk factors include monopolizing key technologies, rising prices of upstream raw materials, lagging industry standards, and insufficient cooperation within the industrial chain. This study provides a useful reference for developing planning and R&D decision-making processes in electrochemical energy storage battery technology.

Key words: electrochemical energy storage, LDA model, technology topic identification, technology topic evolution, risk analysis

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