Hydrogen combustion heater of fuel cell engine and extremely-low-temperature self-starting method

A technology for combustion heaters and fuel cells, applied in fuel cell heat exchange, fuel cells, fuel cell additives, etc.

Inactive Publication Date: 2020-09-29
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has certain application prospects, but this method is only for metal bipolar plate stacks

Method used

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  • Hydrogen combustion heater of fuel cell engine and extremely-low-temperature self-starting method
  • Hydrogen combustion heater of fuel cell engine and extremely-low-temperature self-starting method
  • Hydrogen combustion heater of fuel cell engine and extremely-low-temperature self-starting method

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Experimental program
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Effect test

Embodiment 1

[0031] figure 1 Shown is a basic embodiment of the present invention, a system structure diagram of a fuel cell engine hydrogen combustion heater, including hydrogen storage through a cold start solenoid valve 2 connected to the hydrogen inlet pipe valve 3 on the proton exchange membrane fuel cell stack 4 The bottle 1 and the air compressor 6 connected to the air pipe valve 5 on the fuel cell stack 4 also include an expansion tank 9 connected to the fuel cell stack 4, a heating device 10, a radiator assembly 11 and a deionizer 12 , the fuel cell stack 4 is also provided with a hydrogen outlet pipe valve 7, a temperature sensor 8 is connected between the expansion tank 9 and the fuel cell stack 4, the expansion tank 9 is connected with a cooling water pump 14, and the cooling water pump 14 is connected to the heating device 10, the radiator assembly 11 and the deionizer 12 through the coolant control valve 13 at the same time.

[0032] figure 2 It is a schematic diagram of t...

Embodiment 2

[0040] In the method for realizing self-starting at extremely low temperatures, step (2) is ahead of step (1) by a specific time. Moreover, the solenoid valve 2 opens when the ambient temperature is -8°C to -3°C, which can be -7°C or -5°C. The reason is that after the temperature rises to the critical temperature of -3°C, it can operate normally and is lower than -3°C. You must press a special operation to succeed.

Embodiment 3

[0042] image 3 It is a schematic diagram of the principle of a heating device 10 according to another embodiment of the present invention, including a heating chamber with a bracket 26 underneath and a cooling device arranged in the heating chamber. A cooling liquid flow channel 23 is arranged in the cooling device, and the heating chamber A cooling liquid inlet 24 and a cooling liquid outlet 25 connected to the cooling liquid flow channel 23 are arranged on the outside, a mixed gas flow channel 27 is outside the cooling device, and a mixed gas inlet 21 and a mixed gas outlet 22 are respectively arranged on the upper side of the heating chamber.

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Abstract

The invention discloses a hydrogen combustion heater of a fuel cell engine. The hydrogen combustion heater comprises a partition plate, an enhanced heat exchange device and a catalytic reactor, the enhanced heat exchange device and the catalytic reactor are arranged on the two sides of the partition plate respectively, the enhanced heat exchange device comprises a cooling water way, a catalyst covering layer is arranged between the partition plate and the catalytic reactor, and cooling liquid pipe valves and three-way connectors are arranged on the heat exchange device and the catalytic reactor respectively. The method for realizing low-temperature self-starting of the fuel cell engine comprises the following steps that: after receiving a starting signal, the engine self-checks the ambienttemperature; when the environment temperature ranges from -8 DEG C to -3 DEG C, a signal is sent to the cold start electromagnetic valve, and the hydrogen pipeline cold start electromagnetic valve isopened; hydrogen flows into the heater to be mixed with air to generate chemical reaction to generate heat, cooling water is heated, meanwhile, the cooling liquid control valve acts to disconnect theradiator assembly and an inlet of the deionizer branch, and the cooling liquid only flows through the heating device and is heated; and the heated cooling water heats an electric pile of the engine,so that rapid low-temperature cold start of the fuel cell engine is realized.

Description

technical field [0001] The invention belongs to the field of fuel cell engines, and relates to an auxiliary device for low-temperature cold start of a fuel cell engine, in particular to a hydrogen combustion heater for a fuel cell engine and a method for self-starting a fuel cell engine in an extremely low temperature environment. Background technique [0002] A fuel cell is a device that directly converts chemical energy in fuel into electrical energy. Proton exchange membrane fuel cell is the most widely used one, and is widely used in automobiles, mobile power stations and other fields. In the fuel cell work project, hydrogen and air are respectively fed into the anode and cathode sides of the fuel cell, and an electrochemical reaction occurs on the membrane electrode to generate electric energy and output, and at the same time, the cooling water fed into the stack takes away the heat generated by the reaction . [0003] At present, fuel cell engines still have problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04014H01M8/04029H01M8/04223H01M8/04302H01M8/04701
CPCH01M8/04022H01M8/04029H01M8/04268H01M8/04701H01M8/04302Y02E60/50
Inventor 潘建欣何书默付志超杨军吴桐
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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