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Hydrogen recirculation device suitable for hydrogen fuel cell automobile

Pending Publication Date: 2021-11-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies of the prior art, to provide a hydrogen recirculation device suitable for hydrogen fuel cell vehicles, which uses the turbine system to recover the pressure energy of high-pressure hydrogen, and drives the compressor to pressurize the unreacted hydrogen Recycling and reuse overcomes the traditional motor-driven hydrogen circulation pump that requires an external motor, hydrogen leakage and lubricating oil pollution, and recycles the pressure energy of high-pressure hydrogen to improve the overall energy utilization of the fuel cell system

Method used

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  • Hydrogen recirculation device suitable for hydrogen fuel cell automobile
  • Hydrogen recirculation device suitable for hydrogen fuel cell automobile
  • Hydrogen recirculation device suitable for hydrogen fuel cell automobile

Examples

Experimental program
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Embodiment 1

[0029] Such as figure 1 As shown, a hydrogen circulation device suitable for hydrogen fuel cell vehicles without external power consumption is disclosed, including: a hydrogen circulation device 1, a hydrogen processing device 4 and a fuel cell 5, and the hydrogen circulation device 1 includes a turbine 2 and a compressor 3; The high-pressure hydrogen storage tank communicates with the intake port of the turbine 2 through the high-pressure air supply pipe 11, and the high-pressure hydrogen enters the turbine 2 to drive the turbine 2 to rotate, and the pressure energy is converted into the kinetic energy of the turbine 2, and the turbine 2 drives the compressor 3 coaxial with it; the fuel cell 5 The unreacted hydrogen in the medium is sucked by the compressor 3 through the low-pressure intake pipe 31, and the compressor 3 pressurizes the low-pressure hydrogen and then enters the hydrogen treatment device 4 through the exhaust pipe 10 for recycling; at the same time, the medium-p...

Embodiment 2

[0033] Such as figure 2As shown, a hydrogen circulation device suitable for hydrogen fuel cell vehicles without external power consumption includes: a hydrogen circulation device 1, a hydrogen treatment device 4, a fuel cell 5 and a steam-water separator 6, and the hydrogen circulation device 1 includes a turbine 2 and a compressor Machine 3, this case adopts hydrogen circulation device 1 and steam-water separator 6 to be connected in series.

[0034] The high-pressure hydrogen storage tank communicates with the intake port of the turbine 2 through the high-pressure air supply pipe 11, and the high-pressure hydrogen enters the turbine 2 to drive the turbine 2 to rotate, and the pressure energy is converted into the kinetic energy of the turbine 2, and the turbine 2 drives the compressor 3 coaxial with it; the fuel cell 5 The unreacted hydrogen enters the steam-water separator 6 to separate liquid water, and the hydrogen is sucked by the compressor 3 through the low-pressure i...

Embodiment example 3

[0037] Such as image 3 As shown, a hydrogen circulation device suitable for hydrogen fuel cell vehicles without external power consumption includes: a hydrogen circulation device 1, a hydrogen processing device 4, a fuel cell 5 and a pressure reducing valve 7, and the hydrogen circulation device 1 includes a turbine 2 and a compressor Machine 3, this case adopts hydrogen circulation device 1 and decompression valve 7 to be connected in series; The specific structure is the same as embodiment 2, and difference is to be provided with decompression valve 7 on the exhaust pipe 10 of hydrogen treatment device 4 intake end; When the battery car is running at high power, the medium-pressure hydrogen output by the turbine 2 and the medium-pressure hydrogen output by the compressor 3 flow through the pressure reducing valve 7 at the same time, and then enter the hydrogen processing device 4 to reach the appropriate temperature and pressure through the hydrogen processing device 4 , an...

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Abstract

The invention discloses a hydrogen recirculation device suitable for a hydrogen fuel cell automobile, which comprises a high-pressure hydrogen storage tank, a hydrogen circulation device, a hydrogen treatment device and a fuel cell. The hydrogen circulation device comprises a turbine and a gas compressor, and the turbine is in coaxial transmission connection with the gas compressor; the high-pressure hydrogen storage tank is communicated with a gas inlet of the turbine through a high-pressure gas feeding pipe, a gas inlet of the gas compressor is communicated with the fuel cell through a low-pressure gas inlet pipe, an exhaust port of the gas compressor is communicated with the hydrogen treatment device through an exhaust pipe, and the exhaust pipe is communicated with an exhaust port of the turbine; pressure energy stored by high-pressure hydrogen is utilized to drive the turbine so as to drive the gas compressor to perform hydrogen recirculation, sealing between relative moving parts is avoided, the problems that a traditional motor needs to drive a hydrogen circulating pump to be externally provided with a motor, and hydrogen leakage and hydrogen pollution are caused are solved, and meanwhile, the pressure energy of the high-pressure hydrogen is recycled. And the overall energy utilization rate of the fuel cell system is improved.

Description

technical field [0001] The invention relates to the technical field of energy recovery devices for hydrogen energy vehicles, and more specifically relates to a hydrogen recirculation device suitable for hydrogen fuel cell vehicles. Background technique [0002] In a hydrogen fuel cell, maintaining the water balance inside the membrane electrode is of great significance to the life of the stack. On the one hand, too low water content will lead to "membrane dryness", which is not conducive to the transmembrane transport of protons; Diffusion, resulting in a decrease in the output voltage of the stack. In addition, the continuous accumulation of impurity gases permeating from the cathode side to the anode will cause catalyst "poisoning", reduce catalytic activity, and lead to a significant decline in stack performance. [0003] To solve the above problems of liquid water accumulation and gas permeation, the method of hydrogen removal is usually used to discharge the water and...

Claims

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Application Information

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IPC IPC(8): H01M8/04089H01M8/04111
CPCH01M8/04097H01M8/04111H01M2250/20Y02E60/50Y02T10/62
Inventor 李雪李鹏飞张虹马朝臣
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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