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

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
Comparison scheme
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Example Embodiment

[0028] Example 1

[0029] Such as figure 1 As shown, a hydrogen circulating device suitable for use in a hydrogen fuel cell vehicle has no external power consumption hydrogen gas circulating means 1, a hydrogen treatment device 4, and a fuel cell 5, a hydrogen circulating device 1 including a turbine 2 and a compressor 3; The high-pressure hydrogen storage tank communicates with the turbine 2 inlet through the high pressure air supply pipe 11, and the high pressure hydrogen gas enters the turbine 2 to rotate the turbine 2, the pressure can be converted to the kinetic energy of the turbine 2, the turbine 2 drives the coaxial pressure machine 3; fuel cell 5 The unreacted hydrogen is inhaled by the low pressure joining trachea 31, and the compressor 3 inputs the hydrogen treatment device 4 by the exhaust pipe 10 after the low pressure hydrogen gas is boosted, and the cycle reuse is performed; the medium pressure hydrogen discharged at the turbine 2 is discharged. The hydrogen treatme...

Example Embodiment

[0032] Example 2

[0033] Such as figure 2As shown, a hydrogen circulating device 1, a hydrogen treatment device 4, a hydrogen gas separator 6, a hydrogen circulation device 1 including a hydrogen circulating device 1, a hydrogen circulation device 1 including a turbine 2 and a pressure gas Machine 3, this case uses the hydrogen circulating device 1 to be connected in series with the softening separator 6.

[0034] The high-pressure hydrogen storage tank communicates with the turbine 2 inlet through the high pressure air supply pipe 11, and the high pressure hydrogen gas enters the turbine 2 to rotate the turbine 2, the pressure can be converted to the kinetic energy of the turbine 2, the turbine 2 drives the coaxial pressure machine 3; fuel cell 5 The unreacted complete hydrogen into the soda separator 6 separated liquid water, and hydrogen is inhaled by the low pressure joining trachea 31, and the other connection structures are the same as in Example 1.

[0035] The present inv...

Example Embodiment

[0036] Implementation case 3

[0037] Such as image 3 As shown, a hydrogen circulating device suitable for use in a hydrogen fuel cell vehicle, including: hydrogen circulating device 1, hydrogen treatment device 4, fuel cell 5 and pressure reducing valve 7, hydrogen circulating device 1 including turbine 2 and pressure Machine 3, this case employs the hydrogen circulating device 1 and the pressure reducing valve 7; the specific structure is the same as in Example 2, and the discharge valve 7 is provided on the exhaust pipe 10 of the intake end of the hydrogen treatment device 4; when fuel When the battery car is operating, the medium pressure hydrogen output output from the turbine 2 outputs the medium pressure hydrogen flows through the pressure reduction valve 7 after the pressure reduction valve 7 is pressed, and the hydrogen treatment device 4 achieves a suitable temperature and pressure. , Finally flowing into the fuel cell 5 for electrochemical reaction; the pressure reducin...

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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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