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Activation method of fuel cell stack

A fuel cell stack and activation method technology, applied in the field of fuel cell stack activation, can solve the problems of increasing fuel hydrogen consumption, increasing activation operating costs, etc., and achieve the effect of shortening activation time and reducing usage

Active Publication Date: 2020-03-31
浙江锋源氢能科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors of the present invention have found that when the fuel cell stack is activated in this way, the high current operation not only increases the fuel hydrogen consumption, but also increases the activation operation cost for a long time.

Method used

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  • Activation method of fuel cell stack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] In this embodiment, the fuel cell stack including 20 single cell stacks is activated, which specifically includes the following steps:

[0055] Step S0: install the battery stack to be activated that meets the air tightness test standard on the test platform, and connect the gas pipeline, cooling water pipeline and electronic load. Start the load so that the test platform can communicate with the load. Set the preheating temperature of the test platform water tank, turn on the water pump, and preheat the stack to be activated. Set the temperature of each pipeline, feed N 2 The cathode and anode of the stack are purged.

[0056] Step S1: After the purging is completed, select the manual test mode, and pass H to the anode and cathode of the battery stack respectively. 2 and air to ensure that the stack to be activated is in an open-circuit state (OCV); wherein, the stoichiometric ratio of the anode’s hydrogen intake is set to 1.5, and the stoichiometric ratio of the ca...

Embodiment 2

[0065] In this embodiment, the fuel cell stack including 160 single cell stacks is activated, which specifically includes the following steps:

[0066] Step S0: install the battery stack to be activated that meets the air tightness test standard on the test platform, and connect the gas pipeline, cooling water pipeline and electronic load. Start the load so that the test platform can communicate with the load. Set the preheating temperature of the test platform water tank, turn on the water pump, and preheat the stack to be activated. Set the temperature of each pipeline, feed N 2 The cathode and anode of the stack are purged.

[0067] Step S1: After the purging is completed, select the manual test mode, and pass H to the anode and cathode of the battery stack respectively. 2 and air to ensure that the stack to be activated is in an open-circuit state (OCV); wherein, the stoichiometric ratio of the anode’s hydrogen intake is set to 1.5, and the stoichiometric ratio of the c...

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Abstract

The invention relates to an activation method of a fuel cell stack, and relates to the technical field of fuel cells. According to the mainly adopted technical scheme, the activation method of the fuel cell stack comprises the following steps: S1, introducing hydrogen into an anode of a to-be-activated cell stack, introducing air or oxygen into a cathode of the to-be-activated cell stack, and enabling the cell stack to be in an open circuit state; S2, carrying out intermittent oxygen deficit treatment on the cell stack; wherein the intermittent hypoxic treatment comprises the following steps:carrying out hypoxic operation on the cell stack to enable the cell stack to be in an oxygen starvation state, and then carrying out reduction operation; and S3, starting a load, selecting a constantcurrent test mode, loading the cell stack to a set current, enabling the cell stack to be in a stable working state, and performing intermittent anoxic treatment on the cell stack. The method is mainly used for shortening the activation time of the fuel cell stack, improving the activation efficiency and reducing the use amount of hydrogen in the activation process.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an activation method for fuel cell stacks. Background technique [0002] In today's global energy shortage and high oil prices, it is imperative to find new energy as a substitute for fossil fuels. Fuel cell is the fourth-generation power generation technology after hydropower, thermal power and atomic power generation. It is also the only power device with pollution-free, high-efficiency, wide application, no noise and continuous work. It is considered to be the most promising power plant in the 21st century. High-efficiency and clean power generation technology with promising development prospects. The biggest feature of the fuel cell is that the reaction process does not involve combustion, and the energy conversion is not limited by the Carnot cycle, so the energy conversion rate is as high as 60%-80%, and the actual use efficiency is 2-3 times that of the internal combus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04223H01M8/04225H01M8/04302
CPCH01M8/04223H01M8/04225H01M8/04302Y02E60/50
Inventor 冯翌袁蕴超王海峰沈润祝传贺王利生
Owner 浙江锋源氢能科技有限公司
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