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A method for activating a 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.

Active Publication Date: 2021-02-23
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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  • A method for activating a fuel cell stack
  • A method for activating a fuel cell stack
  • A method for activating a 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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PUM

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Abstract

The invention relates to an activation method for a fuel cell stack, and relates to the technical field of fuel cells. The main technical solution is: a method for activating a fuel cell stack, comprising the following steps: Step S1: passing hydrogen gas to the anode of the cell stack to be activated, and air or oxygen to the cathode, and making the cell stack in a state of open-circuit state; step S2: performing intermittent hypoxia treatment on the battery stack; wherein, the intermittent hypoxia treatment is: after performing an anoxic operation on the battery stack to make the battery stack in an oxygen-starved state, and then Carry out the reduction operation; step S3: start the load, select the constant current test mode, load the battery stack to the set current, and after the battery stack is in a stable working state, perform intermittent anoxic treatment on the battery stack. The invention is mainly used to shorten the activation time of the fuel cell stack, improve the activation efficiency and reduce the usage 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 Patents(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