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Partition test system for detecting current and temperature distribution of fuel cell

A fuel cell and test system technology, applied in the direction of fuel cell, only current measurement, current/voltage measurement, etc., can solve the problems of high process cost and immature technology, and achieve the effect of simple implementation, elimination of damage, and low cost

Active Publication Date: 2021-01-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of high process cost and immature technology of the existing buried resistance technology, the present invention improves and designs a collection board for detecting fuel cell current and temperature distribution with simple structure and mature technology

Method used

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  • Partition test system for detecting current and temperature distribution of fuel cell
  • Partition test system for detecting current and temperature distribution of fuel cell
  • Partition test system for detecting current and temperature distribution of fuel cell

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Embodiment Construction

[0030] The present invention is aimed at a fuel cell with a power of 10kw; the impedance of the copper-clad gold-plated partition is 3 milliohms to less than 5 milliohms, the size is 12mm*8mm, the size of the reserved rectangle is 4mm*3mm, and the distance between adjacent copper-clad gold-plated partitions 5mm; the size of the temperature-sensitive resistor is less than 2mm*1.5mm, and the impedance is 10K; a printed circuit board with a three-layer structure, including two interlayers, divides all copper-clad gold-plated partitions into two parts, and the equal-impedance wiring of one part is set On the first interlayer, the other part of the equal-impedance wiring is arranged on the other interlayer; the equal-width and equal-distance equal-impedance wiring method is adopted, the width of the equal-impedance wiring is 0.25mm, and the length is 122mm, and the realized impedance is below 10 milliohms .

[0031] Such as figure 1 As shown, a fuel cell multifunctional partition te...

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Abstract

The invention discloses a partition testing system for detecting current and temperature distribution of a fuel cell, belongs to the field of fuel cell testing, and particularly relates to the field of testing of current and temperature distribution of a fuel cell stack. According to the invention, the acquisition board adopts an equal-impedance wiring mode, so the impedance from each partition tothe sampling resistor is consistent as much as possible; the sampling resistor is arranged outside the acquisition plate, a resistor burying process is not needed, the cost is low and the implementation is simple; the temperature-sensitive resistor is placed on the printed circuit board instead of being buried in the flow channel, so the damage of the temperature measuring element to the structure of the fuel cell is eliminated, and the reaction in the cell is not influenced; online high-density matrix type partition current and temperature distribution measurement can be realized, real-timeimaging is performed on data, and partition current distribution and temperature characteristics are visually displayed. The system can be used for a high-speed acquisition scene, and has important significance for researching the dynamic characteristics of the fuel cell.

Description

technical field [0001] The invention belongs to the field of fuel cell testing, in particular to the field of testing the current and temperature distribution of fuel cell stacks. Background technique [0002] With people's increasing attention to environmental issues, new environmentally friendly energy sources have gradually entered people's research vision. As an efficient and clean new energy device, fuel cells have been gradually applied in aerospace, ships, automobiles, backup power and other fields. Among them, proton exchange membrane fuel cells are considered to be an important development direction of new energy sources in the future due to their high energy conversion efficiency, low operating temperature, short start-up time, and high power density. The life and performance of proton exchange membrane fuel cells are affected by many factors, and the influence of these factors is directly reflected in the current distribution and temperature distribution inside t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/24G01K1/14G01R19/00H01M8/0432
CPCG01K1/14G01K7/24G01R19/0092H01M8/04373Y02E60/50Y02P70/50
Inventor 曹继申陈锦华殷聪李凯汤浩
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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