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Fuel cell cold start rapid test system

A fuel cell and test system technology, applied in fuel cells, fuel cell additives, circuits, etc., can solve the problems of high cold start test cost, shortened test time, long time consumption, etc., and achieves good control effect, shortened test time, cost reduction effect

Inactive Publication Date: 2021-02-05
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high cost, difficult characterization and long time-consuming of fuel cell stack cold start test, the present invention proposes a fuel cell cold start rapid test system, which controls the thermal boundary conditions of single or multiple fuel cells, so that The cold start test can be carried out in a single cell of one or more pieces of fuel, which can greatly reduce the cost, reduce the difficulty of characterization, shorten the test time, and improve the efficiency of rapid development and exploration of cold start strategy, aging mechanism and durability test

Method used

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  • Fuel cell cold start rapid test system
  • Fuel cell cold start rapid test system
  • Fuel cell cold start rapid test system

Examples

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Embodiment 1

[0034] A fuel cell cold start fast test system according to Example 1 of the present invention characterizes the cold start performance of the fuel cell by testing the cold start performance of the core components of the fuel cell (including membrane electrodes and plates). The overall structure of the test system in this embodiment can be found in figure 1 , including a controllable thermal boundary fuel cell subsystem 1 , a fuel cell ambient temperature control subsystem 2 , a fuel cell gas supply subsystem 3 and a fuel cell electrical signal control subsystem 4 . When the test system is working, the fuel cell ambient temperature control subsystem 2 controls the ambient temperature of the fuel cell, the fuel cell gas supply subsystem 3 is connected to the controllable thermal boundary fuel cell subsystem 1 through gas pipelines, and the fuel cell electrical signal control subsystem 4 is connected with the controllable thermal boundary fuel cell subsystem 1 through voltage an...

Embodiment 2

[0040] see image 3 , The difference between this embodiment and Embodiment 1 lies in the fuel cell subsystem 1 with a controllable thermal boundary. Among them, the heat-regulating component is composed of a heating sheet 8 attached to the outside of the current collector 6 and a heat insulating plate 9 attached to the outside of the heating sheet 8. The end plate 10 is located outside the heat insulating plate 9, and the heat insulating plate 9 can reduce the heating sheet 8 to the end. Plate 10 measured heat dissipation. The active area of ​​the core component of the monolithic battery is 4cm 2 The material of the pole plate is expanded graphite with a thickness of 1 mm and an active area ratio of 0.5. A thermophysical quantity sensor 11 is attached to the outside of the pole plate or the outside of the current collector (here is a heat flux sensor, and the measurable heat flux range is 0~ 50W / cm 2 ), which can monitor the heat flux between the pole plate and the current...

Embodiment 3

[0043] see Figure 4 , The difference between this embodiment and Embodiment 1 lies in the fuel cell subsystem 1 with a controllable thermal boundary. Wherein, the heat-regulating component is composed of a heat-regulating plate 7 attached to the outside of the current collector 6, a heating sheet 8 attached to the outside of the heat-adjusting plate 7, and a heat-insulating plate 9 attached to the outside of the heating sheet 8. Outside the plate 9, the heat regulating plate 7 cooperates with the thermophysical quantity follower PID controller 12, which can regulate the thermal boundary conditions of the fuel cell, and the heat insulating plate 9 can reduce the heat loss from the heating plate 8 to the end plate 10. The active area of ​​the core component of the monolithic battery is 25cm 2 The plate material is expanded graphite with a thickness of 2mm and an active area ratio of 0.4; the current collector 6 is made of gold-plated brass with a thickness of 1mm; the heat reg...

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Abstract

The invention provides a fuel cell cold start rapid test system, a controllable thermal boundary fuel cell subsystem serves as the core of the system, and by adding a heat regulation component, a thermal physical quantity sensor and a thermal physical quantity following PID controller, the thermal boundary of one or more fuel cells can be accurately controlled. In addition, the cell is arranged ina temperature control region of the fuel cell environment temperature control subsystem to control the environment temperature of the cells; the fuel cell gas supply subsystem is connected with the controllable thermal boundary fuel cell subsystem through a gas pipeline, and can control the gas type, temperature, humidity, flow velocity and pressure intensity; and the fuel cell electric signal control subsystem is connected with the controllable thermal boundary fuel cell subsystem through a voltage and current signal line so as to control the voltage or current of the cell. By controlling the thermal boundary conditions of the single or multiple fuel cells, the cold start test can be carried out on the basis of the single or multiple fuel cells, so that the cost can be greatly reduced, the characterization difficulty can be reduced, and the test time can be shortened.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell cold start quick test system. Background technique [0002] Traditional energy is gradually withdrawing from the stage of history, and hydrogen energy, as a new type of energy, is considered to be the ultimate energy in the 21st century. Fuel cells are an important carrier of the hydrogen energy industry. They have the advantages of high efficiency, zero emissions, no noise, and high reliability, and have broad development prospects. Among them, proton exchange membrane fuel cells have become an important development direction in the field of transportation due to their high power density and fast response, and sub-zero start-up is one of the key bottlenecks for the large-scale application of fuel cell vehicles in temperate and frigid regions. [0003] Aiming at the problem of fuel cell start-up at sub-zero temperature, a lot of research work has been carried out ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04302H01M8/04313H01M8/04701H01M8/04858H01M8/04082H01M8/04089
CPCH01M8/04089H01M8/04201H01M8/04313H01M8/04701H01M8/04858H01M8/04302Y02E60/50
Inventor 张剑波汪尚尚
Owner TSINGHUA UNIV
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