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Fuel cell system and its control method

A technology of a fuel cell system and a control method, which is applied in the direction of fuel cells, fuel cell additives, fuel cell groups, etc., and can solve problems such as fluctuations and instability of the fuel cell system temperature

Inactive Publication Date: 2012-08-01
YOUNG GREEN ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a control method only judges whether the temperature of the battery stack is higher than the protection temperature, which may easily cause the temperature of the fuel cell system to fluctuate excessively and become unstable.

Method used

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  • Fuel cell system and its control method
  • Fuel cell system and its control method

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Embodiment Construction

[0025] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0026] image 3 It is a block diagram of a fuel cell system according to an embodiment of the present invention. Please refer to image 3 The fuel cell system 300 includes a battery stack 310 , a first temperature sensor 320 , a second temperature sensor 330 , a voltage and current detection unit 340 , a processor 350 and a converter 360 . The battery stack 310 is used for chemical reaction to output electric energy. In an embodiment of the present invention, the fuel cell system 30...

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Abstract

The invention relates to a fuel cell system and its control method. The control method comprises the following steps: detecting the environmental temperature and the operation temperature of a cell stack; and calculating the thermal resistance value of the cell stack according to the environmental temperature, the operation temperature of a cell stack and current thermal value of the cell stack. The control method also comprises a step of setting allowable thermal value of the cell stack according to control temperature, environmental temperature and thermal resistance value. When the current thermal value of the cell stack is less than the allowable thermal value of the cell stack and the operating temperature is less than the control temperature, the current thermal value of the cell stack can be increased. When the current thermal value of the cell stack is more than the allowable thermal value of the cell stack and the operating temperature is more than the control temperature, the current thermal value of the cell stack can be decreased.

Description

technical field [0001] The invention relates to a fuel cell system and its control method, and in particular to a fuel cell system with a temperature protection mechanism and its control method. Background technique [0002] The development and application of energy has always been an indispensable condition for human life, but the damage to the environment is increasing day by day. The use of fuel cell technology to generate energy has the advantages of high efficiency, low noise, and no pollution, and is an energy technology that conforms to the trend of the times. There are many types of fuel cells, among which the proton exchange membrane fuel cell (Proton Exchange Membrane Fuel Cell; PEMFC) is common. Furthermore, in fuel cell systems, the operating temperature of the stack is one of the key performance indicators. [0003] Portable fuel cell is one of the novel fuel cell applications in recent years. In the process of miniaturizing the fuel cell, the system will simp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/24
CPCH01M8/10H01M8/04649H01M8/04H01M8/04701H01M8/0491H01M8/24Y02E60/50H01M8/0432H01M8/04559H01M8/04589H01M8/04895
Inventor 吴晋豪洪国泰
Owner YOUNG GREEN ENERGY
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