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Fuel cell multifunctional hydrogen injection system, fuel cell system and vehicle

A fuel cell system and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as insufficient hydrogen supply, high internal energy consumption, and difficult sealing of hydrogen, so as to improve the hydrogen circulation system and reduce overall energy consumption , the effect of ensuring the supply

Pending Publication Date: 2022-07-15
BEIJING SINOHYTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems in the use of the current hydrogen circulation system. For example, the molecular weight of hydrogen is small, and hydrogen gas at a certain pressure is easy to leak. In the working process of the hydrogen injector in the hydrogen circulation system of the current structure It is a difficult problem; moreover, in the hydrogen circulation system of the current structure, the hydrogen gas flows in the hydrogen circulation system generally through the hydrogen circulation pump, the power consumption is relatively large, and the circulation pump needs to be controlled separately, which may cause failure; in the case of not using the circulation pump It is easy to cause insufficient hydrogen supply and cannot be adjusted; in addition, the existing circulation system structure is not highly integrated, with many parts and high internal energy consumption

Method used

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  • Fuel cell multifunctional hydrogen injection system, fuel cell system and vehicle
  • Fuel cell multifunctional hydrogen injection system, fuel cell system and vehicle

Examples

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Effect test

Embodiment 1

[0025] This embodiment provides a fuel cell multifunctional hydrogen injector. The fuel cell multifunctional hydrogen injector includes a first chamber 1 , a second chamber 2 and a third chamber 3 . The first chamber 1 is provided with The first gas injector 4 and the second gas injector 5 connected to the electronically controlled valve 10, the nozzle of the first gas injector 4 is arranged in the second chamber 2, and the nozzle of the second gas injector 5 is arranged In the third chamber 3, the first chamber 1 is provided with a hydrogen inlet 7, the second chamber 2 is provided with an ejector 6 including a first hydrogen outlet 8, and the third chamber 3 is provided There is a second hydrogen outlet 9 .

[0026] In this embodiment, the first chamber 1 accommodates hydrogen gas, the first gas injector 4 is a high-pressure chamber hydrogen injection, and the second gas injector 5 is a low-pressure chamber hydrogen injection. The hydrogen injection chamber and the ejector ...

Embodiment 2

[0031] Based on the same technical concept as the above-mentioned embodiment, the present embodiment provides a fuel cell multifunctional hydrogen injection injector 6 which may also be provided with a drainage inlet 61 and an injection inlet 62, the injection inlet 32 ​​and the second chamber 2 The outlet is in communication, and the drainage inlet 61 is in communication with the stack. The hydrogen in the stack can be further recycled to reduce energy loss.

Embodiment 3

[0033] Based on the same technical concept as the above embodiments, the present embodiment provides a fuel cell system including any one of the fuel cell multifunctional hydrogen injection described above. In this embodiment, through the fuel cell multifunctional hydrogen injection agent hydrogen circulation system provided in this embodiment, the hydrogen circulation is realized without the need for a hydrogen circulation pump, and the leakage of the hydrogen circulation system and the high failure rate are avoided. , high power consumption, etc.

[0034] Preferably, the first hydrogen outlet and the second hydrogen outlet of the fuel cell multifunctional hydrogen injector are connected with the hydrogen inlet pipeline of the stack, and the drainage inlet of the ejector is connected with the stack hydrogen outlet pipeline, Preferably, the hydrogen inlet is communicated with the hydrogen bottle. Among them, the hydrogen bottle is generally high pressure, and the low pressure...

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Abstract

The invention relates to the field of fuel cell systems, in particular to a fuel cell multifunctional hydrogen injector, a fuel cell system and a vehicle, the fuel cell multifunctional hydrogen injector comprises a first chamber, a second chamber and a third chamber, the first chamber is provided with a first gas injector and a second gas injector which are connected with an electric control valve, and the third chamber is provided with a second gas injector and a third gas injector which are connected with an electric control valve; a nozzle of the first gas ejector is arranged in the second cavity, a nozzle of the second gas ejector is arranged in the third cavity, the first cavity is provided with a hydrogen inlet, the second cavity is provided with an ejector comprising a first hydrogen outlet, and the third cavity is provided with a second hydrogen outlet. According to the embodiment of the invention, through the integrated design of the plurality of gas ejectors and the ejector, the jet flow energy generated when the gas ejectors eject hydrogen is utilized to drive the hydrogen to flow and circulate, so that a hydrogen circulating pump is replaced; and the injection amount of hydrogen can be adjusted according to the requirements of different working conditions, and the supply amount of hydrogen is guaranteed.

Description

technical field [0001] The invention relates to the field of fuel cell systems, in particular to a fuel cell multifunctional hydrogen injection and fuel cell system and a vehicle. Background technique [0002] The traditional power system will release harmful gases such as COx, NOx, SOx and pollutants such as PM particles, which have low thermal efficiency and pollute the environment. The hydrogen fuel cell uses hydrogen to carry out the reverse reaction of electrolysis of water, supplying hydrogen and oxygen to the anode and the cathode respectively. Under the action of the catalyst, the hydrogen releases electrons, and the hydrogen ions flow to the cathode through the proton exchange membrane, and the electrons reach the cathode through the external circulation. At the cathode, an electric current is generated, and hydrogen ions combine with oxygen and electrons at the cathode to produce water. The process of generating electricity in a hydrogen fuel cell is an electroche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04082H01M8/04089H01M8/04746
CPCH01M8/04097H01M8/04201H01M8/04753H01M2250/20
Inventor 任树兴周百慧方川洪坡
Owner BEIJING SINOHYTEC