Novel fuel cell stack with inlet gas multistage self-preheating function and control method

A fuel cell stack and self-preheating technology, which is applied in the direction of fuel cells, fuel cell additives, and fuel cell heat exchange, can solve the problems of chemical energy loss, the difference between the actual efficiency of the battery and the theoretical efficiency, and achieve dynamic regulation , avoid heat loss, improve the overall efficiency of the effect
CN114464839APending Publication Date: 2022-05-10SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2022-05-10

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Abstract

The invention discloses a novel fuel cell stack with inlet gas multistage self-preheating and a control method, the novel fuel cell stack comprises an inlet manifold, the inlet manifold comprises an anode gas inlet flow channel and a cathode gas inlet flow channel which are respectively arranged at two sides in the stack; a cooling liquid outlet flow channel is arranged on the periphery of the air inlet manifold in a surrounding mode, and a sleeve type air inlet manifold is formed. And the cooling liquid and the air inlet fluid flow in opposite directions to form counter-flow type convection heat exchange. The hydrogen and oxygen inlet gas is subjected to multi-stage preheating in the galvanic pile, the inlet gas temperature preheating target under different working conditions can be achieved, devices and power consumption required for heating the inlet gas outside the galvanic pile are reduced, a fuel cell system is more portable, and the total efficiency of a fuel cell is improved through step-by-step utilization of waste heat of cooling liquid.
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Description

technical field

[0001] The invention relates to the technical field of proton exchange membrane fuel cells, in particular to a novel fuel cell stack with intake air multi-stage self-preheating and a control method. Background technique

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Proton exchange membrane fuel cell is a device that can directly convert hydrogen fuel and chemical energy in the air into electrical energy. It has the advantages of high efficiency, no noise, and no pollution. The optimum operating temperature range of proton exchange membrane fuel cells is 60-80°C, within which the fuel cells can reach the maximum rated power.

[0004] If the intake air is not preheated, the stack will be in a working state with a large temperature difference for a long time, which will accelerate the performance decay of the stack and reduce the service life. ...

Claims

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