关键词: 新能源汽车；热管理；高能耗；多维度优化

Abstract: With the global energy structure transition and the advancement of carbon neutrality goals, thermal management systems for new energy vehicles have become core technologies to enhance industrial competitiveness and achieve sustainable development. This study focuses on the thermal management system of new energy commercial vehicles, establishing three independent subsystems: drive system cooling, power battery thermal management, and passenger compartment air conditioning, while proposing a multi-mode coordinated control strategy. Experimental validation under extreme summer and winter environmental conditions demonstrated that the system design meets performance requirements, but revealed issues of excessive energy consumption. To address this, multi-dimensional optimization strategies are proposed. The research findings provide theoretical and technical support for engineering applications and energy efficiency optimization of thermal management systems in new energy vehicles.

Key words: new energy vehicles; thermal management; high energy consumption; multi-dimensional optimization