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A fuel cell stack bench test switch machine method

A technology of fuel cell stacks and fuel cells, which is applied in the direction of fuel cells, circuits, electrical components, etc., to achieve the effect of ensuring normal power output

Active Publication Date: 2021-08-31
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method mainly focuses on the control hardware during the start-up process, and does not involve the fuel cell stack bench test start-up method

Method used

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  • A fuel cell stack bench test switch machine method
  • A fuel cell stack bench test switch machine method

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Embodiment 1

[0067] This embodiment provides a fuel cell stack bench test power-on method, the method includes an independent power-on method and a power-off method, and the power-on method includes:

[0068] The boot method flow is as follows figure 1 As shown, firstly, temperature control is performed on the stack, the inlet temperature of the coolant is set to 30°C, and the flow rate of the coolant is set to the minimum flow rate;

[0069] Nitrogen purging is carried out on the anode and cathode, and the flow rate is set to the minimum flow rate;

[0070] Increase the coolant inlet temperature to the manufacturer’s recommended coolant inlet temperature (that is, the stack’s nominal coolant inlet temperature) to 75°C, and set the stack anode and anode gas inlet temperatures to be 5°C higher than the stack’s nominal coolant inlet temperature ( ie 80°C). To avoid condensation, the dew point temperature is set to be 10°C lower than the stack nominal coolant inlet temperature (ie 65°C).

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Embodiment 2

[0076] This embodiment provides a fuel cell stack bench test power-on method, the method includes an independent power-on method and a power-off method, and the power-on method includes:

[0077] The boot method flow is as follows figure 1 As shown, firstly, temperature control is performed on the stack, the inlet temperature of the coolant is set to 30°C, and the flow rate of the coolant is set to the minimum flow rate;

[0078] Nitrogen purging is carried out on the anode and cathode, and the flow rate is set to the minimum flow rate;

[0079] Raise the coolant inlet temperature to the manufacturer’s recommended coolant inlet temperature (that is, the stack’s nominal coolant inlet temperature) of 73°C, and set the stack anode and anode gas inlet temperatures to be 7°C higher than the stack’s nominal coolant inlet temperature ( ie 80°C). To avoid condensation, the dew point temperature is set to be 7°C lower than the nominal stack coolant inlet temperature (ie 66°C).

[00...

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PUM

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Abstract

The invention discloses a method for switching on and off a fuel cell stack bench test, including an independent startup method and a shutdown method, and belongs to the technical field of fuel cells. The invention creatively summarizes the common steps of the stack bench test switching method, and at the same time cites the nesting process to make the whole method more concise and clear, and has good versatility. The method can ensure that the fuel cell stack is in a normal working state Start to work at the bottom to ensure the normal power output of the stack.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a test switch method for a fuel cell stack bench. Background technique [0002] The world is currently facing environmental and energy pressures, and new energy vehicles are developing rapidly under this background. Fuel cell vehicles, as one of the important technical routes, are also valued by governments and enterprises of various countries. As an important component of fuel cell vehicles, the demand for fuel cell stacks is increasing year by year. The fuel cell stack requires a lot of testing in the early stage of development and matching with other system components in the later stage. Improper switching operation during the test process will have a certain negative impact on the stack. [0003] During the fuel cell stack bench test, there is currently no unified and general switching method in the industry. There are few methods for switching on and off of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04302H01M8/04303H01M8/04701H01M8/04746H01M8/04858H01M8/04955
CPCH01M8/04723H01M8/04746H01M8/04768H01M8/04776H01M8/04895H01M8/04955H01M8/04302H01M8/04303Y02E60/50
Inventor 丁磊许德超盛夏潘兴龙金守一赵洪辉
Owner CHINA FIRST AUTOMOBILE