车用燃料电池系统水温在线估算模型及实验研究

doi:10.19562/j.chinasae.qcgc.2025.12.008

Abstract

Abstract:

The reliability of temperature control in automotive fuel cells is critical for their efficient and long-term operation. To enable rational diagnosis of temperature sensors or accurately obtain the coolant temperature at fuel cell inlet/outlet after sensor failure， and to avoid power interruption or rapid overheating damage to the fuel cell caused by control failure， in this paper an online estimation model for the inlet and outlet coolant temperature of the fuel cells is established based on heat generation and dissipation principles， incorporating environmental temperature corrections. The validation results from real vehicle experiments show that the transient estimation error for inlet and outlet temperature is ≤2 ℃ and the steady-state estimation error is ≤1 ℃， meeting the required estimation accuracy. This estimation model plays a significant role in enhancing the reliability of the fuel cell thermal management system.

Key words: fuel cell, water temperature estimation, modeling, experimental study

Changchun Li,Tao Zeng,Jin Huang,Hongxu Ran,Long Xiao,Caizhi Zhang. Online Estimation Model and Experimental Study of Water Temperature for Vehicular Fuel Cell Systems[J].Automotive Engineering, 2025, 47(12): 2358-2365.

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References 20

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Online Estimation Model and Experimental Study of Water Temperature for Vehicular Fuel Cell Systems

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