Control method of liquid hydrogen fuel cell waste heat recovery system

A waste heat recovery system and fuel cell technology, applied in the direction of fuel cell heat exchange, fuel cells, fuel cell additives, etc., can solve the problem of reducing cooling fans, etc., to achieve the effects of reducing noise, making full use of it, and prolonging service life

Active Publication Date: 2021-08-13
四川荣创新能动力系统有限公司
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Problems solved by technology

[0004] In order to solve the above problems, the present invention proposes a control method for a liquid hydrogen fuel cell waste heat recovery system, which improves the utilization rate of heat energy, reduces the heat dissipation capacity requirements of the heat dissipation fan, reduces the power consumption of the heat d

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  • Control method of liquid hydrogen fuel cell waste heat recovery system
  • Control method of liquid hydrogen fuel cell waste heat recovery system
  • Control method of liquid hydrogen fuel cell waste heat recovery system

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0036] In this example, see figure 1 and figure 2As shown, the present invention proposes a control method for a liquid hydrogen fuel cell waste heat recovery system. The liquid hydrogen fuel cell waste heat recovery system includes: the fuel cell stack 3 coolant outlet is connected to the stack coolant outlet temperature sensor 9 to the four-way The inlet of the valve 10C and the outlet of the four-way valve 10A are connected to the cooling liquid inlet of the cooling fan 11, the cooling liquid outlet of the cooling fan 11 is combined with the cooling liquid output by the heat exchanger 5, and the B outlet of the four-way valve 10 is input into the cooling water pump 1 inlet, and the cooling water pump 1 outlet is connected to the stack coolant inlet temperature sensor...

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Abstract

The invention discloses a control method of a liquid hydrogen fuel cell waste heat recovery system, which comprises the following steps: when a fuel cell runs, the temperature Tin of a cooling liquid inlet of an electric pile and the temperature Tout of a cooling liquid outlet of the an electric pile are detected in real time, and the real-time power generation power P of the electric pile is calculated; and the detected temperature is compared with a temperature threshold, a four-way valve is adjusted through calculation based on the temperature and the generated power, and different waste heat recovery modes are started. The heat energy utilization rate is increased, the requirement for the heat dissipation capacity of a heat dissipation fan is lowered, the power consumption of a heat dissipation system is lowered, and meanwhile noise is reduced. The four-way valve is adjusted through calculation according to the temperature and the generated power, so that the internal temperature of the electric pile can be accurately regulated by utilizing waste heat, the condition of local supercooling or local superheating is avoided, and the performance of the fuel cell is favorably exerted.

Description

technical field [0001] The invention belongs to the technical field of liquid hydrogen fuel cells, and in particular relates to a control method for a liquid hydrogen fuel cell waste heat recovery system. Background technique [0002] Countries around the world are currently devoting themselves to the development of low-pollution new energy sources, such as solar energy and wind energy, but they are greatly affected by the natural environment and cannot provide continuous and stable energy output. Hydrogen is a clean energy carrier. When generating energy, it only generates water and has no pollution to the environment. It is a bridge connecting renewable energy and traditional fossil energy. The utilization of hydrogen energy has great energy strategic significance. [0003] About 50% of the energy of the fuel cell is converted into heat energy when generating electricity, but its optimum operating temperature is 60-70°C. Currently, the more common waste heat treatment meth...

Claims

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Application Information

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IPC IPC(8): H01M8/0432H01M8/04029H01M8/04007
CPCH01M8/04358H01M8/04029H01M8/04052Y02E60/50
Inventor 张伟明陈桥松曾厚铭贺中立闫帆杨春华陶诗涌
Owner 四川荣创新能动力系统有限公司
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