Qian Zhan Wang·2025-04-27 10:00Core Viewpoint - The research on hybrid vehicles in China has shown a declining trend in the number of related academic papers from 2016 to 2024, with a projected total of 272 papers in 2024, indicating a decrease in research interest in this field [3]. Group 1: Definition and Market Trends - Hybrid vehicles are defined as vehicles that utilize two or more power sources, specifically combining traditional internal combustion engines with electric power sources [1]. - The increasing environmental awareness and rising fuel prices have led to a growing consumer preference for hybrid vehicles, which are categorized into three main types: Plug-in Hybrid Electric Vehicles (PHEV), Hybrid Electric Vehicles (HEV), and Range-Extended Electric Vehicles (REEV) [1]. Group 2: Research Output and Institutions - Higher education institutions are the primary contributors to the literature on hybrid vehicles, with Jilin University leading by publishing 410 related papers [5]. - The overall research output in the hybrid vehicle sector has been declining, with a notable drop in the number of papers published in recent years [3]. Group 3: Research Themes and Disciplines - Hybrid technology is identified as a popular research theme within the hybrid vehicle sector, alongside control strategies and HEV-related studies [8]. - The automotive industry is recognized as a key research discipline in the hybrid vehicle field, with significant contributions also coming from industrial economics and electric power industries [9].