A fuel cell hydrogen-side pressure-regulating device based on pressure sensitive films and a cell

A fuel cell and regulating device technology, applied in fuel cells, electrical components, circuits, etc., can solve problems such as pressure control hysteresis, achieve the effects of reducing mechanical fatigue, increasing pressure, and reducing flow channel area

Active Publication Date: 2019-10-15
上海楞次新能源汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, this patent requires data collection and analysis, and there is a certain hysteresis in pressure control

Method used

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  • A fuel cell hydrogen-side pressure-regulating device based on pressure sensitive films and a cell

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Effect test

Embodiment 1

[0022] A fuel cell hydrogen side pressure regulating device based on a pressure-sensitive membrane, comprising a hydraulic container 1, the hydraulic container 1 is a closed container, the two ends of the hydraulic container 1 are respectively sealed by a pressure-sensitive membrane 2, and one of the pressure-sensitive membranes 2 is located in the fuel cell In the hydrogen chamber 3, the other is located in the air chamber 4. When the pressure between the hydrogen chamber 3 and the air chamber 4 is balanced or within the design pressure difference range, the pressure-sensitive membrane 2 at both ends does not deform. When the air chamber 4 and the When the pressure between the hydrogen chambers 3 is higher than the design pressure difference, the pressure-sensitive membrane 2 in the hydrogen chamber 3 deforms, which changes the hydrogen flow path in the hydrogen chamber 3 and adjusts the pressure on the hydrogen side to maintain the pressure balance on both sides of the hydroge...

Embodiment 2

[0026] A fuel cell, comprising a hydrogen chamber 3 and an air chamber 4, and also includes the fuel cell hydrogen side pressure regulating device based on the pressure-sensing membrane described in Embodiment 1.

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PUM

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Abstract

The invention relates to a fuel cell hydrogen-side pressure-regulating device based on pressure sensitive films. The fuel cell hydrogen-side pressure-regulating device comprises a hydraulic container.The hydraulic container is a closed container; and the two ends of the hydraulic container are sealed by the pressure sensitive films respectively. One pressure sensitive film is located in a hydrogen chamber of a fuel cell, and the other pressure sensitive film is located in an air chamber. When the pressure between the hydrogen chamber and the air chamber is balanced or is within a designed pressure difference range, the pressure sensitive films at both ends do not deform; and when the pressure between the hydrogen chamber and the air chamber is higher than the designed pressure difference,the pressure sensitive film in the hydrogen chamber deforms to make a hydrogen flow channel in the hydrogen chamber change to adjust the hydrogen side pressure so as to maintain pressure balance at the hydrogen-air sides. Compared with the prior art, the device adopts a pure mechanical mode and utilizes the hydraulic principle to carry out pressure difference conduction directly to achieve a purpose of pressure balance, so that mechanical fatigue of a proton exchange membrane caused by pressure fluctuation can be effectively reduced.

Description

technical field [0001] The invention relates to a fuel cell hydrogen side pressure regulating device, in particular to a fuel cell hydrogen side pressure regulating device and a battery based on a pressure sensing membrane. Background technique [0002] The proton exchange membrane fuel cell of a hydrogen energy vehicle is composed of an anode, a cathode and a proton exchange membrane. The anode is the place where the hydrogen fuel is oxidized, and the cathode is the place where the oxidant is reduced. In the fuel cell high-pressure system, due to the rapid pressure drop at the moment of hydrogen exhaust, the current common method is to install a pressure sensor or a differential pressure sensor at the outlet of the hydrogen side and the outlet of the air side, and adjust the opening size of the throttle valve on the air side to adjust the air pressure. The side pressure is adjusted by adjusting the hydrogen side air intake proportional valve or the hydrogen injection speed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04089H01M8/04746
CPCH01M8/04104H01M8/04753Y02E60/50
Inventor 马天才左琳琳
Owner 上海楞次新能源汽车科技有限公司
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