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Automatic-force hydrogen pressurized circulation system of automotive fuel cell

A fuel cell and circulation system technology, which is applied in the direction of fuel cells, fuel cell additives, electric power devices, etc., can solve problems such as energy waste, flow that cannot meet needs, and power consumption, and achieve the effect of solving internal friction problems

Inactive Publication Date: 2009-06-03
上海航天动力科技工程有限公司
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Problems solved by technology

This inevitably consumes a large amount of electric energy, and the unreacted hydrogen discharged into the atmosphere is wasted
[0003] The pressurization and recycling of large-flow hydrogen has always been a problem in the hydrogen supply system of fuel cells. If the positive displacement pump is used, the flow rate cannot meet the demand
In order to meet the large flow of hydrogen in the system, if a high-power booster pump is used, the fuel cell generates power to supply the high-power booster pump, which consumes a large amount of electric energy, and the gain is not lost; if the gas is forced to flow in the stack, the hydrogen is directly Exhaust to the atmosphere, causing energy waste

Method used

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  • Automatic-force hydrogen pressurized circulation system of automotive fuel cell

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0015] figure 1 It is a schematic diagram of the automatic power hydrogen pressurized circulation system of the vehicle fuel cell of the present invention, including: a vehicle-mounted gas cylinder 1, a primary pressure reducing valve 2, a gas-driven gas booster pump 3, a buffer gas cylinder 4, and a secondary pressure reducing valve. Valve 5, stack 6, gas-water separator 7, and secondary pressure reducing valve 8. The vehicle-mounted gas cylinder 1 is connected to the primary pressure reducing valve 2 through a high-pressure pipeline. At this time, the hydrogen in the gas cylinder 1 is reduced to 1.5 MPa and sent to the pneumatic booster pump 3 as the driving gas; the primary pressure reducing valve 2 and the pneumatic booster The pump 3 is connected, and the output of the obtained 1.5MPa gas after passing through the pneumatic booster pump ...

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Abstract

The invention discloses an automatic-force hydrogen pressurized circulation system of an automotive fuel cell; the potential energy of the high-pressure gas in an on-board gas cylinder is used as power of pneumatic gas pressurized pump, thus achieving the objects of automatic circulation and pressurization. The automatic-force hydrogen pressurized circulation system solves the technical difficult problem of flowability of gas in the galvanic pile of the fuel cell, achieves the objects of high power generation efficiency and prolonging the service life of the cell, and solves the problems that the energy resource is wasted as the residual hydrogen that is not completely reacted in the galvanic pile has to be exhausted to achieve the object of the flowing of gas.

Description

technical field [0001] The invention relates to a hydrogen gas supply system for a fuel cell, in particular to an automatic power gas pressurization circulation system for a fuel cell for a vehicle. Background technique [0002] The hydrogen supply system on the fuel cell vehicle is to decompress and stabilize the hydrogen in the high-pressure cylinder to the pressure required by the fuel cell to 0.05 MPa, and then flow through the stack to generate electricity. After the hydrogen is separated from the water and gas, it is pressurized by the hydrogen booster pump and returned to the hydrogen supply system to form a hydrogen cycle. Because the gas must flow when the stack is working, and the greater the power generation, the faster the gas flow. The method currently adopted is: install an electric diaphragm pump or a gas compressor at the downstream outlet of the stack, use electric energy to pressurize the excess hydrogen, and send it back to the upstream inlet of the stack...

Claims

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Application Information

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IPC IPC(8): H01M8/04B60K1/04B60L11/18H01M8/04746
CPCY02E60/50
Inventor 陈卫国马海涛郭正柔
Owner 上海航天动力科技工程有限公司
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