Core Viewpoint - The rapid development of the new energy vehicle (NEV) industry demands higher standards for lightweight materials, safety, and range performance, with polymer materials emerging as a key technology due to their low density, high strength, corrosion resistance, and design flexibility [2][3]. Group 1: Current Application Status of Polymer Materials in NEVs - Engineering plastics (e.g., PA6, PC/ABS) are widely used in battery housings and charging station components [2]. - Elastomer materials (e.g., silicone rubber) are applied in sealing and damping systems [2]. - Lightweight composite materials (e.g., carbon fiber reinforced plastics) are gradually covering body structure components [2]. - Polymer materials account for approximately 15% of the total weight of vehicles, surpassing the total weight of other non-metal materials [13]. Group 2: Development Trends of Polymer Materials - Future trends focus on three main areas: developing high-temperature and flame-retardant battery-specific polymer materials to enhance safety; promoting the green transformation of bio-based or recyclable materials in response to carbon neutrality goals; and integrating materials, structures, and processes to further reduce costs and optimize performance [2][3]. - The integration of material science and intelligent manufacturing technology is expected to enable more efficient and environmentally friendly lifecycle applications of polymer materials in NEVs [3]. Group 3: Specific Material Developments - Battery materials are evolving with specific requirements such as thermal conductivity and mechanical strength, with a focus on domestic production to reduce reliance on imports [14][20]. - Electric control materials are being developed to meet high voltage requirements, with a focus on improving mechanical properties and reducing costs [20][25]. - The demand for lightweight and thin-walled materials is increasing, with potential weight reductions of 10-40% through innovative design and material use [30][36]. Group 4: Environmental Considerations - The development of green rubber materials is aligned with carbon neutrality strategies, focusing on enhancing performance while reducing costs [47]. - The application of recycled materials in automotive interior components is being explored to overcome challenges related to odor and thermal aging [51]. Group 5: Future Material Innovations - The future of NEV materials includes the development of intelligent films and flexible electronic materials that enhance user experience and integrate advanced functionalities [38][44]. - The shift towards high-performance, lightweight composite materials is anticipated to meet the increasing demands for energy density and cost-effectiveness in battery systems [31].