【作者】 秦敬玉； 徐鹏； 王利生； 谢晓峰； 毛宗强；

【Author】 Qin Jingyu Xu Peng Wang Lisheng Chen Quanshi Mao ZongqiangInstitute of Nuclear Energy Technology, Tsinghua University; Department of Automobile Engneerin, Tsinghua University, Beijing 100084; Beijing Feichi Luneng Battery Technology In. Co.,; Qingqi In. Co. of China, Jinan 250100

【机构】 清华大学核能技术设计研究； 北京飞驰绿能电池技术有限公司； 清华大学汽车工程系；

【摘要】 本文首先测试了北京飞驰绿能电池技术有限公司设计制造的18千瓦电堆,得到了输出电流、电压、反应气体流量、加湿温度、电池堆上循环水入口和出口温度、以及电堆尺寸、质量等一系列参数。为了优化循环水管理,建立了循环水管理物理模型,该模型仅依赖于电堆输入和输出等宏观参数,不必考虑诸如质子交换膜的水迁移系数和冷却板、双极板上流场结构等微观参数。该模型在优化循环水系统配置、简化控制系统参数等方面具有一定优势。模型分析指出,在18千瓦PEMFC发动机散热机制中,可以忽略热辐射以及反应物质流入流出对电池堆温度影响,循环水散热量占97％。18千瓦PEMFC发动机对散热器部分有较高要求,现阶段尚缺少燃料电池专用设备,采用中档轿车用散热器在经济和技术上都比较合适。为了达到快速启动目的,PEMFC电动汽车必须配备功率较大的二次电池,二次电池功率依启动时间而定更多还原

【Abstract】 Firstly, a series of parameters such as output voltage, current, flow rate of reactant gases, humidifying temperature、temperature of the stack etc. were obtained from the measurement of a 18 kW PEMFC stack designed and built by the Beijing Feichi Luneng Battery Technology In. Co. Then a physical model was built which only depends on the parameters listed above, not on the micro-parameters such as net water-transmit-coefficient of the PEM and the configuration of the flow field. This model was shown to be superior in optimizing the configuration of the water cycling system and control system. The result showed that heat from radiation and reactant flow can be neglected when considering the heat management of a 18 kW PEMFC stack, since heat brought by the cycling water has a portion of 97%. A 18kW PEMFC engine was strict with its radiator. Since presently in China there is few specific equipment for PEMFC stack, it is better to use a well-made radiator of a middle level car. To start quickly, a PEMFC car need a set of second battery with large power, which is determined by the starting time required.更多还原