Temperature control method and device for hydrogen fuel cell

Abstract

The invention provides a temperature control method and device for a hydrogen fuel cell. The method comprises steps that after the inlet temperature of a current hydrogen fuel cell, an inlet temperature set value of the hydrogen fuel cell and a reference operation parameter value of a heat dissipation device are obtained, a target operation parameter value of the heat dissipation device is obtained based on the inlet temperature, the inlet temperature set value and the reference operation parameter value; based on the numerical value relationship among the target operation parameter value, a maximum operation parameter value of the heat dissipation device and a minimum operation parameter value of the heat dissipation device, the adjustment amount of a flow adjustment device is obtained; the flow of the cooling liquid in a first circulation path and a second circulation path is controlled based on the adjustment amount of the flow adjustment device. Compared with the prior art, the inlet temperature is controlled through the heat dissipation device and flow control, so control precision of the inlet temperature of the hydrogen fuel cell can be improved under the condition that theheat dissipation device with the same performance is utilized, use efficiency of the hydrogen fuel cell is improved, and the service life of the hydrogen fuel cell is prolonged.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a method and device for controlling the temperature of a hydrogen fuel cell. Background technique [0002] A hydrogen fuel cell is a power generation device that converts the chemical energy of hydrogen and oxygen into electrical energy. Its basic principle is the reverse reaction of electrolyzing water. Hydrogen and oxygen are supplied to the anode and cathode respectively. After the hydrogen diffuses outward through the anode and reacts with the electrolyte, it is released Electrons reach the cathode through an external load, forming an electric current. The product of hydrogen fuel cells is only water, which is a kind of green energy that has attracted wide attention. [0003] Hydrogen fuel cells are sensitive to reaction temperature, and the reaction temperature not only affects the reaction efficiency of hydrogen fuel cells but also affects the life of hydrogen fu...

AI Technical Summary

Problems solved by technology

However, the control accuracy of the reaction temperature of the hydrogen fuel cell in the prior art is not enough, which reduces the reaction efficiency of the hydrogen fuel cell and reduces the life of the hydrogen fuel cell

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