Piston type hydrogen conveyor for fuel cell

A fuel cell and hydrogen technology, which is applied in the direction of fuel cells, fuel cell additives, electrical components, etc., can solve problems such as instability, narrow working range, and small flow, and achieve reduced adverse effects, good explosion-proof effects, and easy production Effect

Active Publication Date: 2010-02-10
SUNRISE POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The disadvantages of diaphragm pumps are: high noise, low flow rate, electricity consumption, and no explosion-proof
[0004] 2. Jet pump, the disadvantage is: narrow working range, unstable, not suitable for low-voltage battery system
[0

Method used

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  • Piston type hydrogen conveyor for fuel cell

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Example Embodiment

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] The cylinder consists of a cylinder block 4, a piston 5 and a return spring 11. The piston 5 is installed in the cylinder block 4, and the return spring 11 is installed between one side of the piston in the cylinder and the cylinder block, and is installed on the cylinder blocks on both sides of the piston. There are position sensor 1 7 and position sensor 2 9, the cylinders on both sides of the piston are respectively provided with hydrogen inlets 18, 19 and hydrogen outlets 17, 20; the buffer tank 1 is provided with a hydrogen inlet 16, a hydrogen outlet 22 and two The ports 15 and 21 connected to the cylinder; the hydrogen outlet 22 of the buffer tank is connected to the hydrogen inlet (23) of the fuel cell 12 through the water separator 14, and the hydrogen inlet 16 of the buffer tank is connected to a pipeline of the high-pressure hydrogen source through the p...

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Abstract

The invention discloses a piston type hydrogen conveyor for a fuel cell. The cylinder bodies on both sides of a cylinder piston are respectively provided with position sensors and are respectively provided with a hydrogen inlet and a hydrogen outlet; the hydrogen outlet of a buffer tank is connected with the hydrogen inlet of the fuel cell by a water segregator; the hydrogen inlet of the buffer tank is connected with a path of pipeline of a high-pressure hydrogen source, the other path of pipeline of the high-pressure hydrogen source is connected with the hydrogen inlet at one side of the cylinder by a hydrogen inlet solenoid valve, the hydrogen outlet on the same side of the cylinder body is connected with the buffer tank by a hydrogen outlet solenoid valve, the hydrogen inlet on the cylinder body on the other side of the cylinder piston is connected with the hydrogen tail discharge port of the fuel cell by the hydrogen inlet one-way valve, the hydrogen outlet at the same side of thecylinder body is connected with the buffer tank through a hydrogen outlet one-way valve, and the position sensor is connected with the solenoid valve through a signal wire. The invention has the advantages of electricity saving, good ability of utilizing the energy of high-pressure hydrogen to cause discharged tail hydrogen to flow back, simple structure, easy manufacture, low noise, no oil and corrosion, and high security and reliability.

Description

technical field [0001] The present invention relates to the field of fuel cells, in particular to a hydrogen gas return conveying device in a fuel cell system. Background technique [0002] The proton exchange membrane fuel cell also generates heat and water while generating electricity. Water has two forms: liquid water and gaseous water. If the liquid water accumulates too much in the battery, the small gas channels in the battery bipolar plate will be blocked. , so the gas must be circulated to take away the liquid water in the battery. At the anode of the battery, if the gas circulation is increased to take away the liquid water, part of the hydrogen must be discharged (the effect of intermittently discharging the hydrogen to take away the liquid water is better), which reduces the utilization rate of hydrogen and also makes the hydrogen in the anode. Relative humidity decreases, affecting battery performance. In the prior art, the hydrogen with gaseous water discharge...

Claims

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Application Information

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IPC IPC(8): H01M8/04H01M8/04089
CPCY02E60/50Y02P70/50
Inventor 孙基文徐洪峰侯中军
Owner SUNRISE POWER CO LTD
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