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U-shaped gas collection-parellel current combined sprue of proton exchange membrance fuel cell

A fuel cell and parallel flow technology, applied in fuel cell additives, fuel cell control, fuel cell components, etc., can solve the problems of increasing reaction gas diffusion resistance, reducing reaction gas concentration, etc., to reduce the degree of cathode submersion, The effect of improved reaction rate and excellent work performance

Inactive Publication Date: 2006-01-25
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, the addition of water vapor reduces the concentration of the reaction gas and increases the diffusion resistance of the reaction gas.

Method used

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  • U-shaped gas collection-parellel current combined sprue of proton exchange membrance fuel cell
  • U-shaped gas collection-parellel current combined sprue of proton exchange membrance fuel cell
  • U-shaped gas collection-parellel current combined sprue of proton exchange membrance fuel cell

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Embodiment Construction

[0020] In order to better understand the technical solution of the present invention, further description will be made below in conjunction with the accompanying drawings.

[0021] The U-shaped gas collection-parallel flow combined channel structure of the proton exchange membrane fuel cell provided by the present invention is as follows: image 3 shown. The so-called combined flow channel is to select different forms of flow channels according to the working characteristics of the fuel cell cathode and anode. The battery cathode of the present invention adopts a U-shaped flow channel 10, and the anode adopts a parallel flow channel 11, the cathode U-shaped flow channel 10 is above the battery, and the anode parallel flow channel 11 is below the battery.

[0022] The structure of the cathode U-shaped flow collector 10 of the present invention is as follows: figure 1 As shown, it is divided into two parts, the parallel cathode air intake channel 3 and the cathode U-shaped exh...

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Abstract

U type fluid channels for collecting gas are adopted in cathode. Parallel fluid channels are adopted in anode. U type fluid channels for collecting gas in cathode are divided into two parts: inlet fluid channels and U type discharging fluid channels. U type discharging fluid channels enveloping inlet fluid channels are positioned at two sides of end face and lowest part of battery. Parallel gas fluid channels of anode are between entrance of anode gas and exit of anode gas. U type fluid channels for collecting of cathode are in use for discharging liquid water generated by electrochemical reaction easily, and for enhancing sealability of gas. Parallel fluid channels in anode are in use for transporting gas conveniently, and reducing gas-streaming resistance inside fluid channels. Differential pressure between cathode and anode causes diffusion of water from cathode to anode so as to humidify proton exchange membrane.

Description

technical field [0001] The invention relates to a U-shaped gas collection-parallel flow combined flow channel of a proton exchange membrane fuel cell, is a novel gas flow channel of a proton exchange membrane fuel cell, and belongs to the technical field of energy utilization fuel cells. Background technique [0002] With the increasing shortage of resources and the gradual deterioration of the environment, countries all over the world are researching and developing new power generation technologies. Fuel cells can directly convert chemical energy into electrical energy without being limited by the Carnot cycle, and are highly efficient and environmentally friendly. Proton exchange membrane fuel cells have the advantages of compact structure, light weight, high current density, low operating temperature, fast start-up speed, etc., and use non-toxic solid electrolyte membranes, which have broad application prospects in aviation, transportation, mobile power and other fields ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M8/02H01M8/04H01M8/026H01M8/04298
CPCY02E60/50
Inventor 李巍袁俊琪于立军姜秀民
Owner SHANGHAI JIAO TONG UNIV
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