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Inlet gas humidity regulation and control device and method of fuel cell

A fuel cell and control device technology, applied in the direction of fuel cell control, fuel cell, fuel cell additives, etc.

Pending Publication Date: 2022-01-21
BEIJING SINOHYTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention aims to provide a device and method for controlling the intake air humidity of a fuel cell to solve the existing problems

Method used

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  • Inlet gas humidity regulation and control device and method of fuel cell
  • Inlet gas humidity regulation and control device and method of fuel cell
  • Inlet gas humidity regulation and control device and method of fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An embodiment of the present invention discloses an air intake humidity control device for a fuel cell, which is characterized in that it includes flow regulating valves 1 and 2, intercoolers 1 and 2, temperature control equipment, a humidifier, and a controller; ,

[0059] The air inlet of the electric stack (it can be the hydrogen inlet or the air inlet) is connected to the output end of the air inlet device through the first intercooler, the dry area of ​​the humidifier, and the second intercooler; the flow control valve The input end of one is connected with the cooling liquid outlet of the electric stack, the cooling liquid outlet of intercooler one and two, the output end one is connected with the input end of the flow regulating valve two through the temperature control equipment, and the output end two is connected with the intercooler two The coolant inlet is connected; the output end one of the flow regulating valve two is connected with the coolant inlet of t...

Embodiment 2

[0066] To improve on the basis of embodiment 1, the air intake humidity control device also includes an air intake throttle valve and an exhaust gas throttle valve.

[0067] Wherein, the inlet of the intake damper is connected with the outlet of the intercooler 1, and the outlet is connected with the inlet of the electric stack, such as Figure 3~4 As shown, the control terminal is connected to the output terminal of the controller; the inlet of the exhaust damper is connected to the exhaust port of the electric stack, the outlet is connected to the inlet of the wet area of ​​the humidifier, and the control terminal is connected to the output terminal of the controller.

[0068] The use of the intake throttle valve and the exhaust gas throttle valve enables a safe sealed environment to be formed inside the stack when the fuel cell is shut down.

[0069] Preferably, the controller further includes a data acquisition unit, a data processing and control unit connected in sequence...

Embodiment 3

[0097] Another embodiment of the present invention discloses a method for controlling humidity using the air intake humidity control device described in Embodiment 1 or 2, comprising the following steps:

[0098] SS1. Real-time monitoring of the humidity of the gas entering the stack to determine whether it is within the preset range;

[0099] SS2. If yes, keep the openings of flow regulating valves 1 and 2 unchanged;

[0100] SS3. If the humidity of the gas entering the stack is lower than the lower limit threshold of the preset range, adjust the openings of flow regulating valves 1 and 2 in real time according to the humidity of the gas entering the stack and the threshold of the preset range, and judge again until the humidity of the gas entering the stack reaches the preset value End humidity control within the range.

[0101] Compared with the prior art, the device provided in this embodiment adjusts the humidity through two-stage intercoolers. The second intercooler ens...

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PUM

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Abstract

The invention provides an inlet gas humidity regulation and control device of a fuel cell, belongs to the technical field of fuel cells, and solves the problem that the humidity regulation and control effect in the prior art is easily influenced by use conditions or equipment attenuation. The device comprises a first flow regulating valve, a second flow regulating valve, a first intercooler, a second intercooler, temperature control equipment, a humidifier and a controller, wherein the gas inlet of an electric pile is connected with the output end of gas inlet equipment through the first intercooler, the dry area of the humidifier and the second intercooler in sequence, the input end of the first flow regulating valve is connected with the cooling liquid outlet of the electric pile and the cooling liquid outlets of the first intercooler and the second intercooler, the first output end of the first flow regulating valve is connected with the input end of the second flow regulating valve through the temperature control equipment, the second output end of the first flow regulating valve is connected with the cooling liquid inlet of the second intercooler, the first output end of the second flow regulating valve is connected with the cooling liquid inlet of the electric pile, and the second output end of the second flow regulating valve is connected with the cooling liquid inlet of the first intercooler. According to the invention, the humidity of the gas entering the electric pile is regulated by regulating the temperature of the two-stage intercooler, so that the environmental adaptability is effectively improved, and the service life of the electric pile is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an air intake humidity control device and method for a fuel cell. Background technique [0002] The proton exchange membrane of the fuel cell needs to be in proper humid conditions to obtain good working performance. Both the air and hydrogen intake of the fuel cell need to be humidified to prevent the dehydration of the proton exchange membrane during operation, reducing performance and working life. [0003] At present, in order to solve the humidification problem of the air path, the fuel cell system is usually equipped with a humidifier. At present, the humidity can be reduced by increasing the total air flow into the humidifier, and the excess air required by the stack leaves the engine through the rear exhaust. [0004] The operating point of the fuel cell system will shift with the use conditions or attenuation. When the stack is dry, the performance, reliability and du...

Claims

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Application Information

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IPC IPC(8): H01M8/04119H01M8/0432H01M8/04492H01M8/04701H01M8/04828
CPCH01M8/04126H01M8/04335H01M8/04328H01M8/04507H01M8/045H01M8/04708H01M8/04835Y02E60/50
Inventor 胥巍巍渠海洋徐云飞曲观书高云庆李飞强周宝
Owner BEIJING SINOHYTEC
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