车用燃料电池系统绝缘性能分析与优化  

Insulation Performance Analysis and Optimization of Fuel Cell System for Vehicle

作　　者：王安 刘长来 夏诗忠 陈念 Wang An;Liu Changlai;Xia Shizhong;Chen Nian(Camel Group Wuhan Optics Valley R&D Center Co.,Ltd.,Wuhan 430075)

机构地区：[1]骆驼集团武汉光谷研发中心有限公司,武汉430075

出　　处：《汽车技术》2024年第11期31-39,共9页Automobile Technology

摘　　要：为了提升燃料电池系统的绝缘性,针对零部件的结构特性、材料特性以及安装方式进行了优化设计。首先,对绝缘路径进行电路和水路的失效分析;然后,改善电堆内部绝缘设计及电堆仓结构,优化了电子元件保护策略,同时,更换了水泵、水暖型加热器等高压供电冷却回路的零部件材料,调整了散热器、中冷器以及传感器等零部件的加工工艺和安装方式。最后,通过绝缘电阻测试,新型车用燃料电池系统的静态绝缘电阻超过5 MΩ(500 V测试电压下),运行状态下的绝缘电阻超过3 MΩ(在线监测状态下)。To improve the insulation performance of fuel cell systems,the components are optimized based on their structural characteristics,material properties,and installation methods.Firstly,this paper conducts a failure analysis of the insulation path for both electrical and water circuits;Then,the internal insulation design and stack compartment structure of the fuel cell are improved,the key components and protection strategies inside the power electronic devices are optimized,the materials of high-voltage power supply cooling circuits such as water pumps and water heaters are replaced,and the installation methods and material processing technology of components such as radiators,intercoolers,and sensors are adjusted.Finally,after insulation resistance testing,the static insulation resistance of the new vehicle fuel cell system exceeds 5 MΩ(under 500 V test voltage),and the insulation resistance during operation exceeds 3 MΩ(under online monitoring).

关 键 词：燃料电池系统 绝缘性能 失效分析 系统设计 零部件设计 

分 类 号：TM911[电气工程—电力电子与电力传动]