摘 要：针对新能源客车动力电池以旧换新过程中，新动力电池与老化电控系统因电气特性不匹配引发的故障问题,本文系统分析了新动力电池与运行8 年以上老化电控的参数差异，并通过台架测试定位故障根源,提出针对性的工程化改进策略，最后进行实车测试验证。结果表明,电控老化导致的散热不足是制约新旧部件电压参数匹配的关键因素;通过改善电控散热、降低发热的工程改进可有效解决电压与温升的匹配问题。本文为新能源客车动力电池以旧换新过程中的电压参数匹配、温升控制、故障排查及效能提升提供了技术支撑与工程参考。
关键词：新能源汽车; 动力电池; 电压匹配设计; 温升研究
中图分类号：U469. 72 文献标志码：A DOI：10. 15917 / j. cnki. 1006-3331. 2026. 05. 004
Research on Voltage and Temperature-rise Matching Between Power Battery and Vehicle Electronic Control System After Battery Replacement in a Certain Type of Bus
WANG Shuang’e, ZHONG Xiongwu, XIAO Fei, HE Rong, LEI Dailiang, WANG Chao
Abstract: To address the fault problem caused by the electrical characteristic mismatch between new power batteries and aged electronic control systems during the battery replacement of new energy buses, this paper systematically analyzes the parameter differences between new power batteries and motor controllers aged over 8 years in operation, locates the root cause of the fault through bench tests, proposes targeted engineering improvement strategies, and verifies them through real-vehicle tests. The results show that insufficient heat dissipation due to electronic control aging is a key constraint on voltage parameter matching between new and old components; engineering improvements that enhance electronic control heat dissipation and reduce heat generation can effectively address voltage parameter matching and temperature-rise control. The results provide technical support and an engineering reference for voltage parameter matching, temperature rise control, fault troubleshooting, and efficiency improvement in battery replacement for new energy buses.
Key words: new energy vehicle; power battery; voltage matching design; temperature rise study
