Method, device and apparatus for controlling water content in fuel cell stack

Abstract

The invention provides a method, device and apparatus for controlling the water content in a fuel cell stack. The method comprises the following steps of acquiring the state parameters related to a fuel cell; inputting the state parameters into a neural network obtained based on artificial intelligence algorithm learning, and calculating the water content in the fuel cell stack at the current moment; generating an execution command according to the water content at the current moment and the target water content; and adjusting the rotating speed or the valve opening degree according to the execution command, so that the water content at the current moment tends to the target water content. According to the method, the function relationship between the state parameters and the water content of the stack is constructed through an artificial intelligence neural network algorithm, and the water content in the stack at the moment can be accurately calculated, so that the water content of the fuel cell is controlled within a reasonable range, stack membrane dryness and water logging are prevented, and the service life of the fuel cell is prolonged.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a method, device and equipment for controlling the water content in a fuel cell stack. Background technique [0002] With people's emphasis on environmental protection, fuel cell vehicles have attracted widespread attention due to their advantages of clean energy and environmental friendliness, and have achieved rapid development. A fuel cell vehicle uses a fuel cell as a power generating device, which converts chemical energy into electrical energy to provide the energy required for the vehicle to work. [0003] For fuel cells, the water content inside the stack is an important factor affecting its performance. When there is little water inside the stack and the membrane is dry, the internal resistance of the fuel cell stack is large, the performance is reduced, and a large amount of heat is generated, and the efficiency is reduced; when there is a lot of water inside the stack, the f...

AI Technical Summary

Problems solved by technology

When there is little water inside the stack and the membrane is dry, the internal resistance of the fuel cell stack is large, the performance is reduced, and a large amount of heat is generated, and the efficiency is reduced; when there is a lot of water inside the stack, the fuel cell diffusion layer is blocked, which is easy The local voltage is low, or even reversed, and the membrane is prone to produce hydroxyl radicals in a high-humidity environment for a long time, resulting in a decrease in the life of the membrane

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