Tsinghua University

Beijing University of Civil Engineering and Architecture

Pucheng Pei

Dongfang Chen

Peng Ren

Yongfeng Liu

Jianjun Qin

Hongbing Chen

Shangwei Huang

Shengzhuo Yao

Yuehua Li

Ziyao Wu

Xiaoning Jia

Provided is a method for simultaneous detection of parameters of membrane electrode assemblies of a fuel cell stack, which includes: supplying hydrogen to an anode of the fuel cell stack and inert gas to a cathode of the fuel cell stack, controlling operating conditions of the fuel cell stack at respective preset values; applying different voltage excitations or micro-current excitations to the fuel cell stack, collecting a current signal of an entire stack and a voltage signal of each fuel cell; and analyzing a hydrogen crossover current, a catalyst electrochemical surface area, a double-layer capacitance, and a short-circuit resistance of a membrane electrode assembly of each fuel cell based on an excitation-response formula of a fuel cell. The present disclosure does not limit a form of a current or voltage excitation, thereby improving accuracy of a parameter test of a membrane electrode assembly while reducing the test cost.

Method and apparatus for simultaneous detection of a plurality of parameters of a plurality of membrane electrode assemblies of fuel cell stack

Provided are a method and an apparatus controlling a water flooding failure in a fuel cell dual-stack system. The method includes: acquiring a hydrogen pressure drop reference value of the stack system in each normal working condition to obtain a control value; collecting a current pressure drop at a hydrogen side, and determining whether the current pressure drop at the hydrogen side is higher than the control value corresponding to a current normal working condition; determining a faulted stack according to voltages or currents of the first stack and the second stack if the current pressure drop at the hydrogen side is higher than the control value corresponding to the current normal working condition; reducing an opening degree of a flow regulating valve of the faulted stack, and increasing an opening degree of a flow regulating valve of the other stack.

Method and apparatus for controlling water flooding failure in fuel cell dual-stack system

The Invention discloses a self-supplied hydrogen fuel cell system and a working method thereof, the system comprising a diesel tank, a gas separator, a fuel cell, a low-temperature separation reactor, a high-temperature separation reactor, an auto-thermal reformer, a water tank and a catalytic burner; With the high-temperature separation reactor, the low-temperature separation reactor and the auto-thermal reformer, diesel is cracked into Hand CO; as the fuel for the fuel cell, Hmay react with Oin the air and generate electric energy; the unreacted Hand CO enter into the catalytic burner for combustion, ensuring that the water is heated; thus, it not only provides Hto the fuel cell, but also provides high-temperature water to the auto-thermal converter to produce H; electric energy can be generated without burning diesel; since no NOor particulate matters but COis generated, the goal of ultra-low emission is achieved.

Self-supplied hydrogen fuel cell system and working method thereof

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Beijing, China

Pucheng Pei