建立单流道质子交换膜燃料电池（PEMFC）动态冷启动模型,通过实验验证模型可行性,提出一种基于改变输出特性的冷启动控制策略,分析该策略下单流道PEMFC冷启动性能;在单电池的基础上建立PEMFC电堆模型,研究并分析PEMFC电堆的一致性。研究结果表明：在243.15 K温度下所提策略可在30 s内实现单流道PEMFC成功冷启动,在248.15 K温度下可实现PEMFC电堆25 s内成功冷启动;冷启动过程中,PEMFC电堆中单个电池的温度、结冰情况以及输出电压均存在差异且两端单电池的输出特性决定了电堆冷启动结果。
Abstract
A dynamic cold start model for single-channel proton exchange membrane fuel cell （PEMFC） is established, and its feasibility is verified through experiments. A cold start control strategy based on adjusting the output characteristics is proposed, and the cold start performance of single-channel PEMFCs under this strategy is analyzed. Furthermore, a PEMFC stack model is established based on single cells, and the consistency of PEMFC stacks is investigated. The research results demonstrate that at 243.15 K, the proposed strategy can achieve successful cold start of single-channel PEMFCs within 30 s, while at 248.15 K, successful cold start of PEMFC stacks can be achieved within 25 s. During the cold start process, differences in temperature, icing conditions, and output voltage are observed among individual cells in the PEMFC stack. The output characteristics of single cells at both ends determine the cold start result of the stack.
关键词
质子交换膜燃料电池 /
冷启动 /
电流密度 /
结冰 /
粒子群算法 /
控制策略 /
性能一致性
Key words
proton exchange membrane fuel cells （PEMFC） /
cold start /
current density /
freezing /
particle swarm optimization （PSO） /
control strategy /
consistency of performance
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参考文献
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基金
山西省科技重大专项计划“揭榜挂帅”项目（202101070301011）
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