Automotive fuel cell hydrogen circulating system

A fuel cell and circulation system technology, applied in the direction of fuel cells, fuel cell additives, electrical components, etc., can solve the problems of high equipment cost, equipment reliability, applicability and anti-interference ability are not as good as vehicle components, etc., and achieve simple installation , Improve the utilization rate of hydrogen, and improve the effect of hydrogen side humidification

Active Publication Date: 2011-04-13
SUNRISE POWER CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The disadvantages of the above methods in the prior art are: high equipment cost; equipment reliability, applicability and anti-interference ability are not as good as vehicle components

Method used

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  • Automotive fuel cell hydrogen circulating system
  • Automotive fuel cell hydrogen circulating system
  • Automotive fuel cell hydrogen circulating system

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] attached image 3 It is a flow chart of the vehicle fuel cell hydrogen circulation system of the embodiment, and it is a fuel cell hydrogen circulation system with an electric stack. In the system, the pressure of the hydrogen storage tank 1 is 35MPa, and the primary pressure reducing valve 2 decompresses the 35MPa hydrogen in the hydrogen storage tank 1 to 7bar. The multi-point sequential injection system adopts a CNG 4-cylinder multi-point sequential injection system. The meter is a differential pressure flowmeter, the Venturi tube is designed according to the actual situation of the vehicle, the safety pressure relief valve is set to a pressure of 80kPa, and the pressure sensor detects the working pressure of the anode inside the stack (for judging undervoltage and overpressure protection), 120 knots For the fuel cell stack, the set pressure ...

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Abstract

The invention discloses an automotive fuel cell hydrogen circulating system, which is characterized by comprising a multi-point sequential injection system, a Venturi tube, a hydrogen flowmeter and a back pressure valve, wherein the multi-point sequential injection system and the Venturi tube are combined to realize fuel cell hydrogen circulation. The automotive fuel cell hydrogen circulating system has the advantages that: the multi-point sequential injection system is adopted to control the hydrogen flow, and is combined with the Venturi tube, so that the hydrogen is circulated, the hydrogen utilization rate is improved, the hydrogen side drainage is strengthened, the hydrogen side humidification is effectively improved, and the water in the fuel cell is effectively managed; and the device is simple, safe, reliable and low in cost, and can be used for vehicle-mounted environment.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to the field of vehicle fuel cells, in particular to the hydrogen cycle of proton exchange membrane fuel cells. Background technique [0002] Proton exchange membrane fuel cell is an efficient and environment-friendly power generation device, which directly converts the chemical energy stored in fuel and oxidant into electrical energy. Its internal core component is a membrane electrode (Membrane Electrode Assembly, referred to as MEA). The state of water in the membrane of proton exchange membrane fuel cell is closely related to the working performance. Flooding and drying will occur if the inflow and outflow of water is not managed properly. Fuel economy is a key indicator to measure the quality of a fuel cell system. In order to effectively manage the water inside the fuel cell, improve system reliability, and improve fuel economy, hydrogen circulation is a very effective method. Usi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/04089H01M8/04313
CPCY02E60/50
Inventor 王仁芳侯中军戚朋王克勇李加良
Owner SUNRISE POWER CO LTD
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