Proton exchange membrane fuel cell stack temperature control device based on semiconductor refrigerator and method thereof

A technology for temperature control devices and fuel cell stacks, applied in fuel cell control, solid electrolyte fuel cells, fuel cells, etc., can solve the problems of large volume and complex structure of temperature control devices, and achieve simple structure, small size, and optimal adjustment Effect

Pending Publication Date: 2020-04-17
TIANJIN SINO GERMAN VOCATIONAL TECHNICAL COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the cooling fan and the electric heater are two sets of independent actuators, this temperature control device has a large volume and a relatively complicated structure.

Method used

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  • Proton exchange membrane fuel cell stack temperature control device based on semiconductor refrigerator and method thereof
  • Proton exchange membrane fuel cell stack temperature control device based on semiconductor refrigerator and method thereof
  • Proton exchange membrane fuel cell stack temperature control device based on semiconductor refrigerator and method thereof

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Embodiment Construction

[0031] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. Such as figure 1 As shown, a proton exchange membrane fuel cell stack temperature control device based on a semiconductor refrigerator is mainly composed of a semiconductor refrigerator assembly, a bidirectional current sensor, a bridge electronic switch circuit (K1 ~ K4), a control circuit, and a stack temperature Sensor, circulation pump and heat exchange medium.

[0032] The semiconductor cooler components are powered by an adjustable DC power supply (VT+ / VT-), and the current direction (forward / reverse) of the semiconductor cooler is controlled by the control circuit and the bridge electronic switch circuit (K1~K4). When the control circuit The strobe output signals K1E and K4E are valid, and when K2E and K3E are invalid, the electronic switches K1 and K4 are turned on, K2 and K3 are cut off, and the ...

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PUM

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Abstract

The invention relates to the technical field of cells, in particular to a proton exchange membrane fuel cell stack temperature control device based on a semiconductor refrigerator. The device is composed of a semiconductor refrigerator assembly, a bidirectional current sensor, bridge type electronic switch circuits K1-K4, a control circuit, a cell stack temperature sensor, a circulating pump and aheat exchange medium. The semiconductor refrigerator assembly is powered by an adjustable direct-current power supply, one end of the semiconductor refrigerator assembly is connected with the heat exchange medium inlet of the proton exchange membrane fuel cell stack through the circulating pump, the other end of the semiconductor refrigerator assembly is connected with the heat exchange proton outlet, and the control circuit and the bridge type electronic switching circuits K1-K4 control the current direction of the semiconductor refrigerator. The novel temperature control device is small insize, simple in structure and capable of effectively overcoming the defects of the existing technical scheme.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a semiconductor refrigerator-based proton exchange membrane fuel cell stack temperature control device and method thereof. Background technique [0002] The formula for calculating the ideal output voltage Uo of a single membrane electrode in a proton exchange membrane fuel cell stack is: [0003] [0004] In the above formula are the pressures of hydrogen, oxygen and water vapor respectively, Eo is the ideal standard electromotive force of the fuel cell stack MEA, R is the universal gas constant, T is the working temperature of the fuel cell stack, and F is the Faraday constant. [0005] It can be seen from the formula (1) that the output voltage Uo of the fuel cell stack membrane electrode monomer is composed of two parts, the first part is the ideal standard electromotive force Eo of the membrane electrode monomer, and the value of Eo is mainly determined by the materia...

Claims

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Application Information

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IPC IPC(8): H01M8/04007H01M8/04298H01M8/0432H01M8/10
CPCH01M8/04067H01M8/04298H01M8/0432H01M8/10Y02E60/50
Inventor 韩冬林
Owner TIANJIN SINO GERMAN VOCATIONAL TECHNICAL COLLEGE
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