本文提出一种集成加热膜与直冷板的一体化电池热管理方案，通过结构优化与功能融合显著提升温控性能。该系统在制冷工况下，可将电芯最大温差从 11.4℃降至 8.7℃；加热模式下，升温速率可达1.1℃/min，且电芯温差控制在 5℃ 以内，均温性良好。该复合板结构紧凑，具备高效双向调温能力与优良温度均匀性，为电动汽车电池在复杂环境下的热管理提供可靠解决方案。

This paper proposes an integrated battery thermal management solution combining a heating film and a direct cooling cold plate. Through structural optimization and functional integration, the temperature control performance is significantly improved. In cooling mode, the system reduces the maximum temperature difference between battery cells from 11.4℃ to 8.7℃ . In heating mode, the heating rate can reach 1.1℃ /min, with the cell temperature difference controlled within 5℃ , demonstrating good temperature uniformity. This composite plate features a compact structure, efficie-nt bidirectional temperature regulation capability, and excellent temperature homogeneity, providing a reliable solution for thermal management of electric vehicle batteries under complex environmental conditions.