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A high specific energy aviation fuel cell power generation device and control method

A fuel cell and power generation device technology, applied in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problem that liquid hydrogen cannot directly use fuel cells to generate electricity, and achieve light weight, high energy density, and small size. Effect

Active Publication Date: 2020-09-25
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, liquid hydrogen cannot be directly used for fuel cell power generation. It needs to be vaporized before use. The vaporization process requires heat from the external environment.

Method used

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  • A high specific energy aviation fuel cell power generation device and control method

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Embodiment 1

[0023] A schematic flow chart of Embodiment 1 of an aviation fuel cell power generation system using liquid hydrogen as fuel with high specific energy is as follows figure 1 Shown: This process is applicable to an aviation hydrogen-air fuel cell power generation system that uses hydrogen as fuel and oxygen in the air as oxidant. The heat generated during the working process of the fuel cell is used as the heat source for the vaporization of liquid hydrogen, and the high-speed flowing air outside the aircraft wall is used as the cold medium for heat exchange to achieve efficient thermal management of the entire system. By controlling the on-off of the solenoid valve for water, the pipeline is switched, and then the vaporization speed of the liquid hydrogen can be controlled to achieve the purpose of changing the working condition of the fuel cell.

[0024] to combine figure 1 , the present invention consists of a liquid hydrogen storage tank 1, a buffer tank 2, a pressure sens...

Embodiment 2

[0031] The specific operation steps of embodiment 2 are the same as embodiment 1. Only the design of the heat exchanger 13 can be different, the same principle is to use high-speed air as the cooling medium, the heat exchanger of this embodiment is not necessarily designed as a part of the outer surface of the aircraft. Considering the specific structure of the aircraft, when the heat exchanger is not suitable to be placed on the surface of the aircraft, it can be designed as an independent part, placed near the air vent of the aircraft, or hung outside the cabin, and then used when the cooling capacity does not meet the requirements Forced exhaust for cooling.

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Abstract

The present invention relates to a high specific energy aviation fuel cell power generation system, especially an aviation proton exchange membrane fuel cell power generation system using liquid hydrogen as fuel, including a liquid hydrogen storage tank, a buffer tank, a pressure sensor, a hydrogen pressure reducer, Solenoid valves for water, solenoid valves for hydrogen, proton exchange membrane fuel cells, air pumps, circulating water pumps, water tanks, temperature regulators, heat exchangers, etc. The fuel cell's own heat is used as the heat source for the liquid hydrogen storage tank to realize the gasification of liquid hydrogen, the oxygen in the air is used as the oxidant, and the high-speed incoming air outside the aircraft is used as the cooling medium to dissipate the excess heat of the fuel cell. Compared with the traditional aviation fuel cell power generation system of the high-pressure gas cylinder hydrogen storage method, the present invention has the advantages of large hydrogen storage capacity, light weight, small volume, low working pressure, safety and reliability, fast fuel filling speed, and fuel filling method Simple and other advantages, especially suitable for aviation fuel cell power generation systems with long flight time requirements, weight and volume requirements.

Description

technical field [0001] The invention relates to a high specific energy aviation fuel cell power generation system, in particular to an aviation proton exchange membrane fuel cell power generation system using liquid hydrogen as fuel. Background technique [0002] A fuel cell is different from a battery in the traditional sense. It is a high-efficiency power generation device that converts chemical energy stored in fuel and oxidant into electrical energy through electrochemical reactions. Different from the traditional internal combustion engine, although it needs fuel and oxidant like the internal combustion engine, it does not need to be burned, and can complete the chemical reaction at low temperature to realize the power generation function. There are many types of fuel cells, which can be divided into alkaline fuel cells, proton exchange membrane fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells and solid oxide fuel cells according to different electrol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/22H01M8/04082H01M8/04029H01M8/04014
CPCH01M8/04014H01M8/04029H01M8/04208H01M8/22H01M2250/20Y02E60/50
Inventor 周利陶铁男于诚溢邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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