Water-cooled PEMFC air excess coefficient control system and method

A technology of air excess coefficient and control method, which is applied in electrical components, fuel cell additives, fuel cells, etc., can solve the problem of inability to achieve voltage balance of monolithic cells, and achieve simple structure, improved service life, and good voltage balance state. Effect

Active Publication Date: 2015-03-25
四川荣创新能动力系统有限公司
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Problems solved by technology

[0007] The purpose of the embodiment of the present invention is to provide a water-cooled PEMFC air excess coefficient control system and method, aiming to solve the problem that the existing fuel cell air excess coefficient control method cannot achieve voltage balance between single cells

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  • Water-cooled PEMFC air excess coefficient control system and method

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[0032] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as figure 1 As shown, the water-cooled PEMFC air excess coefficient control method of the embodiment of the present invention comprises the following steps:

[0035] S101: When the water-cooled fuel cell system is working, adjust the electronic load to a certain current value I allowed by the stack 1 , adjust the air excess coefficient to λ 1 , record the voltage value of each single cell, and calculate the voltage balance C of the single cell v ;...

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Abstract

The invention discloses a water-cooled PEMFC air excess coefficient control system and method. In water-cooled fuel batteries, control over voltage balance between the electric pile single batteries is achieved by controlling the air excess coefficient on the negative pole side of an electric pile in real time based on the actual situation of a load in the electric pile, and the service life of the electric pile is prolonged. The water-cooled PEMFC air excess coefficient control system comprises the PEMFC electric pile, the electronic load, a current sensor, a data collecting card, an upper computer, a controller and a mass flow meter. The air excess coefficient on the negative pole side is adjusted in real time, the voltage balance between the PEMFC single batteries can be well guaranteed, the response speed of the electric pile is increased, on the premise that the air excess coefficient of the negative pole of the water-cooled PEMFC system is kept in the adjustable range, the air excess coefficient control method is simple and high in reliability and universality, and it is ensured that a good voltage balance state is kept between the single batteries during electric pile running.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a water-cooled PEMFC air excess coefficient control system and method. Background technique [0002] With the increasing global warming and the deteriorating world environment, the utilization of new energy has attracted much attention. Due to its advantages of high efficiency, cleanliness, no noise, and wide power range, fuel cells are regarded as a promising new energy technology. Among them, Proton Exchange Membrane Fuel Cell (PEMFC) has the characteristics of low operating temperature, high power density, fast response, and no pollution. It has been widely used in mobile power, household power, hybrid vehicles, and distributed power stations. and other related fields. [0003] In actual operation, the PEMFC system needs to adjust the flow rate, pressure and other related parameters of the reaction gas in real time according to the change of the load and the operating con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/04537H01M8/04746H01M8/04858H01M8/04992
CPCH01M8/04104Y02E60/50
Inventor 陈维荣李艳昆刘志祥赵兴强李奇戴朝华张学霞李岩游志宇
Owner 四川荣创新能动力系统有限公司
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