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Fuel cell automobile tail gas mixing system and control method thereof

A fuel cell and vehicle exhaust technology, applied in fuel cells, mixing methods, mixers, etc., can solve problems such as the inability to always guarantee the hydrogen content in the discharge, and the non-dilutable adjustment of the hydrogen concentration, so as to change the airflow direction, improve hydrogen safety, Effect of exhaust noise reduction

Pending Publication Date: 2021-11-02
DONGFENG MOTOR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the function of this patent is only to mix the hydrogen gas evenly. If the content of hydrogen gas in the mixed gas already exceeds the threshold range, no matter how uniform the mixture is, it still exceeds the threshold value range. The content is within the threshold range

Method used

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  • Fuel cell automobile tail gas mixing system and control method thereof
  • Fuel cell automobile tail gas mixing system and control method thereof

Examples

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Embodiment Construction

[0032] The following specific examples illustrate the present invention in further detail.

[0033] Such as figure 1 As shown, a fuel cell vehicle exhaust gas mixing system includes an anode exhaust pipeline 1, a cathode exhaust pipeline 2, a dilution gas pipeline 3, an exhaust mixer 4, a mixing discharge pipe 5, and a controller 10. The gas flows to the provided mixing chamber 41 and the silencer chamber 42, and the anode tail gas pipeline 1 and the cathode tail gas pipeline 2 are connected to the mixing chamber 41 for introducing the anode tail gas and the cathode tail gas of the fuel cell 20 into the mixing chamber 41 for mixing and diluting The gas pipe 3 is connected with the cathode tail gas pipe 2 for leading the fresh air flowing to the cathode inlet of the fuel cell 20 to the cathode tail gas pipe 2, and the mixing discharge pipe 5 is connected with the muffler chamber 42 for discharging the muffled mixed tail gas into the atmosphere . The fuel cell 20 is provided w...

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Abstract

The invention discloses a fuel cell automobile tail gas mixing system and a control method thereof. The mixing system comprises an anode tail gas pipeline, a cathode tail gas pipeline, a diluted gas pipeline, a tail gas mixer, a mixed discharge pipe and a controller, wherein a mixing cavity and a silencing cavity which are arranged in a gas flow direction are formed in the tail gas mixer, the anode tail gas pipeline and the cathode tail gas pipeline are both connected with the mixing cavity, the diluted gas pipeline is connected with the cathode tail gas pipeline, the mixed discharge pipe is connected with the silencing cavity, the diluted gas pipeline is provided with a regulating valve, the cathode tail gas pipeline is provided with a one-way valve, a first hydrogen concentration sensor is arranged on the anode tail gas pipeline, and a second hydrogen concentration sensor is arranged on the mixed discharge pipe. According to the mixing system, diluent gas is introduced through the diluent gas pipeline, the diluent gas, the anode tail gas and the cathode tail gas are mixed in the tail gas mixer and then discharged, the hydrogen emission concentration is reduced, and the hydrogen safety of the whole vehicle is greatly improved.

Description

technical field [0001] The invention relates to new energy vehicles, in particular to a fuel cell vehicle exhaust gas mixing system and a control method thereof. Background technique [0002] In order to better deal with national environmental and energy issues, hydrogen fuel cell vehicles have become one of the development strategies of countries around the world. The power source of a hydrogen fuel cell vehicle comes from a fuel cell engine, and a fuel cell engine is a power generation that converts chemical energy into electrical energy through a chemical reaction between hydrogen gas entering through the anode and oxygen-containing gas (usually air) entering the cathode through a catalyst. device. With the continuous and widespread use of hydrogen fuel cell vehicles, more and more problems have emerged. With the operation of the fuel cell, hydrogen will enter the exhaust pipe along with the exhaust gas (exhaust gas), and finally be discharged into the atmosphere, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F5/00B01F5/06B01F3/02B01F15/04B01F15/00H01M8/0662B01F23/10
CPCH01M8/0662Y02E60/50
Inventor 吴星成贺翀王子剑陈明王波
Owner DONGFENG MOTOR GRP
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