Variable vibration fuel cell water management system and control method thereof

Abstract

The invention discloses a variable vibration fuel cell water management system and a control method thereof. The system comprises a variable vibration device and a fuzzy controller, the variable vibration device comprises a plurality of spring lifting tables with electric damping springs, a vibrator lifting table with a vibrator and a placement seat located above the spring lifting tables and the vibrator lifting table, a fuel cell stack is positioned and installed on the placement seat through a positioning piece, the electric damping springs are connected with the fuzzy controller through a damping spring control wire harness, the vibrator is also connected with the fuzzy controller through a vibrator control wire harness, and the fuzzy controller can control the vibrator to vibrate and enable the fuel cell stack to ascend and descend by controlling the electric damping spring to act. The system has the beneficial effects that: the structural design is ingenious, the control method is reasonable, the problem of water logging in the fuel cell stack caused by vibration of the fuel cell under the complex road condition is effectively solved, the vibration stability of the fuel cell under the complex road condition is ensured, and the performance of the fuel cell is also improved.

Description

technical field [0001] The invention relates to a variable vibration fuel cell water management system and a control method thereof, belonging to the technical field of fuel cell water management. Background technique [0002] As people's awareness of environmental protection continues to increase, gasoline and diesel vehicles will face more and more challenges in the future market, and proton exchange membrane fuel cell (PEMFC) vehicles are one of the most promising alternatives, however, excessive product Water can cause severe flooding on the cathode side. When water fills the pores of the gas diffusion layer (GDL), the oxygen transport path from the channels to the catalyst layer will be blocked. Therefore, effective management of product water is the key to improving fuel cell stack performance. One of the important technical issues. [0003] When the fuel cell stack is running on complex road conditions, the product water cannot be removed and accumulated inside the s...

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Problems solved by technology

[0002] As people's awareness of environmental protection continues to increase, gasoline and diesel vehicles will face more and more challenges in the future market, and proton exchange membrane fuel cell (PEMFC) vehicles are one of the most promising alternatives, however, excessive product Water can cause severe flooding on the cathode side. When water fills the pores of the gas diffusion layer (GDL), the oxygen transport path from the channels to the catalyst layer will be blocked. Therefore, effective management of product water is the key to improving fuel cell stack performance. One of the important technical issues

[0003] When the fuel cell stack is running on complex road conditions, the product water cannot be removed and accumulated inside the stack due to vibration inside the fuel cell stack, resulting in water flooding. Some studies have shown that mechanical vibration may directly affect the GDL and flow channels. Water removal, thereby reducing or increasing the risk of internal flooding, however, the current shock absorber has the disadvantage of fixed shock absorption capacity and does not take into account the mechanical vibration of water removal when flooding occurs on horizontal road sections

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