Proton exchange membrane fuel cell water management system and operation method

A fuel cell water and proton exchange membrane technology, applied in fuel cells, fuel cell additives, fuel cell control, etc., can solve the problems of excessive water, increased internal resistance, imbalance, etc.

Inactive Publication Date: 2020-12-04
国鸿氢能科技(嘉兴)股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the internal water management problem of proton exchange membrane fuel cell, the present invention provides a water management system and operation method of proton exchange membrane fuel cell. The direction of flow inside the battery is to solve the internal water imbalance problem that occurs when the existing proton exchange membrane fuel cell is working, that is, the problem of increased internal resistance caused by the loss of water in the proton exchange membrane near the inlet of the cathode in the fuel cell, and the problem of increased internal resistance in the fuel cell. "Flooding" problem caused by excessive water in the part of the battery near the cathode outlet

Method used

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  • Proton exchange membrane fuel cell water management system and operation method
  • Proton exchange membrane fuel cell water management system and operation method

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specific Embodiment 1

[0027] Such as figure 1 As shown, a proton exchange membrane fuel cell water management system according to Embodiment 1 of the present invention includes the following components: 1-proton exchange membrane fuel cell; 11-battery cathode inlet; 12-battery cathode outlet; 2-cathode feeding system 31-the first three-way; 32-the first solenoid valve; 33-the second solenoid valve; 34-the second three-way; 35-the third solenoid valve; 38 - The fourth tee.

[0028] One end of the first tee 31 in the water management system is connected to the cathode supply system 2 of the fuel cell through a pipeline, and the other two ends are respectively connected to the first solenoid valve 32 and the first solenoid valve 32 of the water management system through pipelines. The second solenoid valve 33; the other end of the first solenoid valve 32 in the water management system is connected to the second three-way 34 through a pipeline; the other two ends of the second three-way 34 in the wate...

specific Embodiment 2

[0035] Such as figure 2 As shown, a proton exchange membrane fuel cell water management system according to Embodiment 2 of the present invention includes the following components: 1 - proton exchange membrane fuel cell; 11 - battery cathode inlet; 12 - battery cathode outlet; 2 - cathode feed system 31-four-way valve.

[0036] Depend on figure 2 It can be seen that the four outlets a, b, c, and d of the four-way valve are respectively connected to the fuel cell cathode feed system 2, the fuel cell cathode inlet 11, the fuel cell cathode inlet 12, and the discharge pipeline.

[0037] The operation method provided by this specific embodiment is as follows:

[0038] State one is that in the four-way valve 31, the a end communicates with the b end, and the c end communicates with the d end; after the cathode oxidant gas (air or oxygen) passes through the cathode feed system 2, it passes through the four-way valve 31 end a and b end of the fuel cell, as well as the fuel cell ...

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Abstract

The invention provides a proton exchange membrane fuel cell water management system and an operation method. By means of the proton exchange membrane fuel cell water management system and the operation method, switching of an inlet and an outlet of a fuel cell during working is achieved, that is, the inlet of the fuel cell is switched to be the outlet, and the outlet is switched to be the inlet; and therefore, the flowing direction of cathode oxidant gas (air or oxygen) in the cell is changed in the operation process of the fuel cell, and problems in internal water management during operationof existing proton exchange membrane fuel cells are solved, namely, the problem of internal resistance increase caused by water loss of a proton exchange membrane, close to a cathode inlet part, of the fuel cell and the problem of flooding caused by excessive water of the proton exchange membrane, close to a cathode outlet part, of the fuel cell.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a proton exchange membrane fuel cell water management system and an operation method. Background technique [0002] A proton exchange membrane fuel cell is a type of fuel cell device that uses a proton exchange membrane as an electrolyte membrane. According to the structure and working principle of the proton exchange membrane, the proton-conducting ability of the proton-exchange membrane is closely related to the water content in the membrane: when the water in the membrane is saturated, it has the largest proton-conducting ability, so maintaining the water content in the membrane is very important for fuel. It is critical for the battery to function properly. In actual operation, the fuel cell is close to the cathode inlet, and the oxidant (air or oxygen) is relatively dry, which will take away the moisture in the proton exchange membrane, make the membrane dry, and cause t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04119H01M8/04291H01M8/04298
CPCH01M8/04119H01M8/04156H01M8/04291H01M8/04298Y02E60/50
Inventor 赵钢瞿丽娟贾佳刘广智李夏刘志祥张哲军陈晓敏
Owner 国鸿氢能科技(嘉兴)股份有限公司
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