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A solid oxide fuel cell hybrid energy storage power generation system

A solid oxide, fuel cell technology, applied in solid electrolyte fuel cells, fuel cells, fuel cell additives, etc., can solve the problems of long start-up time, large gas storage chamber volume, and low energy storage density of fuel cells. The effect of shortening the start-up time, small volume of the gas storage chamber, and preventing excessive temperature

Active Publication Date: 2022-07-05
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

However, this system does not solve the problem of long start-up time of the fuel cell, and also has disadvantages such as low energy storage density and large volume of the gas storage chamber.

Method used

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  • A solid oxide fuel cell hybrid energy storage power generation system

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Embodiment Construction

[0031] A solid oxide fuel cell hybrid energy storage power generation system, characterized in that the system includes an energy storage subsystem, a heat storage subsystem, a solid oxide fuel cell power generation subsystem, and a turbine power generation subsystem.

[0032] The energy storage subsystem includes a motor 1, a compressor 2, a compressor 3, a cold storage device 4, an expansion valve 5, a liquid air storage tank 6, an air separation device 7, a liquid nitrogen storage tank 8, a liquid oxygen storage tank 9 and corresponding valves and pipes.

[0033] The thermal storage subsystem includes a circulating pump 17, a cold water tank 18, a hot water tank 19, a circulating pump 20, an air-water heat exchanger 21, an oxygen-water heat exchanger 22, and corresponding valves and pipes.

[0034] The fuel cell subsystem includes a fuel storage tank 10, a solid oxide fuel cell body 11, a cryopump 28, a fuel preheater 29, an oxygen preheater 30, a fuel cell preheater 31, a ...

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Abstract

A solid oxide fuel cell hybrid energy storage power generation system belongs to the technical field of energy storage and power generation. It is characterized in that it includes an energy storage subsystem, a heat storage subsystem, a solid oxide fuel cell power generation subsystem, and a turbine power generation subsystem; uses the grid trough electric energy to store liquid air, liquid oxygen, and liquid nitrogen; uses oxygen as the fuel cell generator. The anode gas increases the oxygen partial pressure and improves the performance of the fuel cell; the two preheating methods of "high temperature gas preheating" and "electric preheating" are used to preheat the fuel cell, effectively shortening the start-up time of the fuel cell; using liquid air The cooling capacity of the unliquefied air in the storage tank (6) conducts thermal management of the solid oxide fuel cell (11) in operation to prevent the fuel cell from operating over temperature; the system has the advantages of high energy storage density, high power density and flexible operation mode. , The characteristics of low requirements for project address conditions.

Description

technical field [0001] The invention relates to the technology of energy storage and power generation, in particular to a solid oxide fuel cell hybrid energy storage and power generation system, which belongs to the technical field of energy storage and power generation. Background technique [0002] The intermittency and instability of renewable energy power generation seriously affect the safety and economic operation of the power grid. The use of power storage technology is an effective method to solve the above problems. [0003] Solid oxide fuel cell is a device that directly converts chemical energy into electrical energy. It has the characteristics of high power density, high energy conversion rate, no pollution, low noise, and can adapt to different power requirements. It is currently the most potential power generation method. one. However, the solid oxide fuel cell is limited by the electrolyte material and must work under high temperature conditions, resulting in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04082H01M8/04223H01M8/12H02J3/28H02J3/32
CPCH01M8/04201H01M8/04268H01M8/12H02J3/28H02J3/32Y02E70/30
Inventor 冉鹏乔玉李昱阳刘清江张成宇王亚瑟
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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