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Fuel cell system and control method thereof

A technology of a fuel cell system and a control method, which is applied in the field of battery stacks and can solve problems such as fuel cell stability degradation

Inactive Publication Date: 2005-10-26
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Also, the temperature of the fuel cell stack remains at a high level even after the fuel cell is stopped, degrading the stability of the fuel cell

Method used

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  • Fuel cell system and control method thereof
  • Fuel cell system and control method thereof
  • Fuel cell system and control method thereof

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Embodiment Construction

[0028] The control method of the fuel cell system of the present invention will be described below with reference to the drawings.

[0029] Although the control method of the fuel cell system according to the present invention can have many embodiments, only the best embodiment will be described below.

[0030] figure 2 A schematic diagram showing the structure of a fuel cell system according to one embodiment of the present invention.

[0031] A fuel cell system according to the present invention includes: a fuel cell stack 14 formed by a plurality of stacks of an anode 10 and a cathode 12, the anode having an electrolyte membrane (not shown) over which the An electrochemical reaction between hydrogen and oxygen generates electricity; a fuel tank stores fuel to be supplied to the anode 10; an air supply unit supplies oxygen-containing air to the cathode 12; a hydrogen burner 22, Fuel and air supplied to the fuel cell stack 14 are heated by utilizing hydrogen gas produced a...

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Abstract

Disclosed is a fuel cell system comprising: a fuel tank connected to a anode of a fuel cell stack for supplying hydrogen-including fuel to the anode; an air supplying unit connected to a cathode of the fuel cell stack for supplying oxygen-including air to the cathode; a heating unit for heating air and fuel supplied to the fuel cell stack; and a purge unit for returning fuel remaining at each system to the fuel tank when a system driving is stopped. According to this, a temperature of the fuel cell stack can reach a goal temperature within the shortest time by heating fuel at the time of driving a system, and fuel remaining at the fuel cell stack and each system is returned to the fuel tank when the system driving is stopped, thereby increasing a performance of the fuel cell system.

Description

technical field [0001] The present invention relates to a fuel cell system, in particular to a cell stack, which can increase the reliability of the fuel cell by reaching the target temperature in the shortest time, and make the temperature of the fuel cell stack drop the fastest when the fuel cell stops working , thereby ensuring the fuel cell system for fuel cell stability, and its control method. Background technique [0002] In general, a fuel cell is used as a substitute for fossil fuels, and unlike a normal battery (a battery), it supplies fuel (hydrogen or hydrocarbon) to the anode and oxygen to the cathode. Therefore, what is going on between hydrogen and oxygen in the fuel cell system is an electrochemical reaction instead of a combustion reaction (oxidation reaction) of fuel, and therefore it is directly converted into different energies before and after the reaction, and directly becomes electrical energy. [0003] like figure 1 As shown, a conventional fuel cel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/06H01M8/10
CPCH01M8/04007Y02E60/50H01M8/04223H01M8/04225H01M8/04228H01M8/04302H01M8/04303
Inventor 赵泰熙朴明硕崔弘金奎晸李明浩金铁焕黄龙俊高承兑许成根
Owner LG ELECTRONICS INC