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Off-line electric pile activation system for fuel cell

A fuel cell, off-line technology, applied in the field of off-line stack activation system, can solve problems such as inability to efficiently activate the stack, and achieve the effects of improving humidification activation efficiency, reducing conductivity, and reducing volume

Pending Publication Date: 2022-07-12
BEIJING SINOHYTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide an off-line stack activation system for fuel cells to solve the problem that the prior art cannot efficiently activate the stack without starting the machine.

Method used

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  • Off-line electric pile activation system for fuel cell
  • Off-line electric pile activation system for fuel cell
  • Off-line electric pile activation system for fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An embodiment of the present invention discloses an offline stack activation system for fuel cells, such as figure 1 As shown, a humidification activation device and a controller are included.

[0059] The humidification and activation device includes an integrated high-pressure gas storage device without hydrogen, a flow control valve, a humidifier, and a gas circulation pump, and is provided with an installation slot for placing the stack to be activated. At least one gas inlet of the stack to be activated on the installation slot is connected to the outlet of the high-pressure gas storage device through a humidifier and a flow control valve in sequence, and the other is connected to the gas outlet corresponding to the gas inlet of the activated stack through a gas circulation pump.

[0060] The controller is used to select the matching gas inlet of the to-be-activated stack according to the gas type in the high-voltage gas storage device to conduct after the stack to...

Embodiment 2

[0064] Improvement is made on the basis of Example 1, and the humidification and activation device also includes a heating cable.

[0065] Wherein, the heat tracing belt is arranged on the connecting pipeline between the gas outlet of the humidifier and the gas inlet of the stack to be activated, and the control end is connected to the output end of the controller, and is used for setting a suitable heat tracing temperature, So that the gas in the pipeline of the layout section is not condensed.

[0066] Preferably, the humidification and activation device further includes a gas-water separator.

[0067] Wherein, the hydrogen tail gas outlet and the air tail gas outlet of the stack to be activated on the installation groove of the humidification activation device are connected in parallel with the input end of the gas-water separator.

[0068] The gas-water separator is used to feed back the liquid to the humidifier for recycling after the output gas of the stack to be activa...

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Abstract

The invention provides an off-line electric pile activation system for a fuel cell, belongs to the technical field of fuel cells, and solves the problem that an electric pile cannot be efficiently activated under the non-starting condition in the prior art. The device comprises a humidifying and activating device and a controller. Wherein the humidifying and activating device comprises a high-pressure gas storage device, a flow control valve, a humidifier, a gas circulating pump and a back pressure valve which are integrated, and is provided with a mounting groove for placing a galvanic pile to be activated. One path of the gas inlet of the to-be-activated galvanic pile is connected with the gas outlet end of the high-pressure gas storage equipment through the humidifier and the flow control valve in sequence, and the other path is connected with the corresponding gas tail gas outlet through the gas circulating pump. And the controller is used for starting and adjusting the flow control valve, the humidifier and the gas circulating pump to humidify and activate the galvanic pile to be activated. By utilizing the offline activation system, the electric pile can be humidified and activated and the activation effect can be checked when the starting condition is not met, so that the faults that the performance is reduced, the electric pile cannot be started and the like due to the fact that the electric pile is stored for a long time are avoided.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an off-line stack activation system for fuel cells. Background technique [0002] After a fuel cell stack is placed for a period of time, the performance of the stack will decrease, and the entire stack may be unusable due to the low performance of a single cell. However, in some cases, the fuel cell stack does not have the power-on conditions and needs to be returned to the laboratory for related activation. [0003] There are two main activation schemes at present, namely forced activation and natural activation. Forced activation further includes constant current forced activation and variable current forced activation, and its activation effect is better than natural activation. In the forced activation process, the variable current forced activation is better than the constant current forced activation, and the time used for the variable current forced activation is gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04119H01M8/0432H01M8/0438H01M8/04492
CPCH01M8/04126H01M8/0438H01M8/0432H01M8/04492Y02E60/50
Inventor 张潇丹方川苗佩宇李飞强
Owner BEIJING SINOHYTEC
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