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A proton exchange membrane fuel cell hydrogen heating system and method

A proton exchange membrane and fuel cell technology, which is used in fuel cell heat exchange, fuel cells, fuel cell additives, etc., can solve the problems of accelerated proton exchange membrane fuel cells, proton exchange membrane rupture, condensation into water droplets, etc.

Active Publication Date: 2022-04-05
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As far as the existing technology is concerned, part of the hydrogen enters the stack directly from the hydrogen bottle, and the other part of the hydrogen enters the stack through the hydrogen circulation system. When the hydrogen temperature in the hydrogen bottle is too low, there are two hidden dangers in the low-temperature hydrogen directly entering the stack: First, the low-temperature hydrogen is mixed with the high-temperature hydrogen at the outlet of the hydrogen circulation pump. When the water vapor is cold, it is easy to condense into water droplets, blocking the hydrogen inlet or hydrogen flow channel of the stack, causing hydrogen starvation, accelerating the attenuation of the proton exchange membrane fuel cell, and reducing the battery life. ;Secondly, the proton exchange membrane is exposed to hydrogen and air with a large temperature difference, and it is suddenly heated and cooled, causing the proton exchange membrane to rupture

Method used

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  • A proton exchange membrane fuel cell hydrogen heating system and method
  • A proton exchange membrane fuel cell hydrogen heating system and method
  • A proton exchange membrane fuel cell hydrogen heating system and method

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Embodiment Construction

[0030] The core of this specific embodiment is to provide a proton exchange membrane fuel cell hydrogen heating system, which can control the temperature of hydrogen, improve battery life, and solve the current problems in this field.

[0031] Hereinafter, an embodiment will be described with reference to the drawings. In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solutions of the invention described in the claims.

[0032] The proton exchange membrane fuel cell hydrogen heating system provided by this specific embodiment includes: an electric stack 1, a hydrogen heating device 2, a hydrogen circulation pump 11, an air pipe 14, and a controller; the hydrogen heating device 2 utilizes the cooling of the electric stack 1 The liquid heats the hydrogen, including a cooling pipe 3 and a h...

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Abstract

The invention discloses a proton exchange membrane fuel cell hydrogen heating system and method. The system includes: an electric stack, a hydrogen heating device, a hydrogen circulation pump, an air pipe, and a controller; the hydrogen heating device uses the cooling liquid of the electric stack to heat hydrogen , comprising a cooling pipe and a hydrogen pipe passing through the cooling pipe, the coolant inlet is provided with a flow regulating valve; the hydrogen outlet of the hydrogen pipe is provided with a first temperature sensor; both the hydrogen circulation pump inlet and the hydrogen circulation pump outlet are connected to the stack; The air pipe is provided with a second temperature sensor; the controller communicates with the flow regulating valve, the first temperature sensor and the second temperature sensor, and is provided with a preset temperature value Δt. When in use, start the fuel cell; when the difference between the first temperature sensor and the second temperature sensor t≥△t, then reduce the opening of the flow regulating valve; when t≤‑△t, then increase the opening of the flow regulating valve degree; when ‑△t<t<△t, maintain the opening of the flow regulating valve.

Description

technical field [0001] The invention relates to the technical field of fuel cells, more specifically, to a hydrogen heating system and method for a proton exchange membrane fuel cell. Background technique [0002] Proton exchange membrane fuel cell is a power generation device that directly converts chemical energy in fuel into electrical energy. It has the advantages of high specific power, fast start-up, high energy conversion efficiency and low environmental pollution. It is an ideal power source for automobile engines. The fuel cell engine system is composed of reaction gas supply (including air supply and hydrogen supply) system, auxiliary systems such as heat dissipation system, and fuel cell stack. The suitable temperature for the operation of the fuel cell system is in the range of 60°C to 70°C. [0003] As far as the existing technology is concerned, part of the hydrogen enters the stack directly from the hydrogen bottle, and the other part of the hydrogen enters t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04007H01M8/04029H01M8/04223H01M8/0432H01M8/04746
CPCH01M8/04029H01M8/04074H01M8/04268H01M8/04328H01M8/04753Y02E60/50
Inventor 刘佳李博杨浩王志浩
Owner WEICHAI POWER CO LTD
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