Humidity and enthalpy conversion device used for generation system of proton exchange membrane fuel cell

Abstract

The invention relates to a humidity and enthalpy conversion device used for a generation system of a proton exchange membrane fuel cell. A power part consists of a speed regulating motor and a motor controller. A humidity and enthalpy conversion part consists of an upper and a lower end plates, an outer barrel and a porous ceramics humidity and enthalpy conversion column provided with a central shaft. The surfaces of the end plates, which come into contact with the porous ceramics humidity and enthalpy conversion column, are fixedly provided with wear resistant rubber seal pads provided with multiple layers of windshield wiper type projections. The shape of the wear resistant rubber seal pads is the same with the shape of the end plates, central holes, air inlets and exhaust outlets are arranged on the wear resistant rubber seal pads, and the central holes, the air inlets and the exhaust outlets are same with central holes, air inlets and exhaust outlets, which are arranged on the endplates. The multiple layers of windshield wiper type projections of the wear resistant rubber seal pads are arranged along the circumference of the end plates, the central holes, the air inlets and the exhaust outlets. Compared with the prior art, the invention has the benefits of small friction between friction pairs, light wear, small rotating torsion, high reliability, simple structure, low cost, low requirement on mounting accuracy and freedom from the impact of connection and mounting outer forces.

Description

technical field [0001] The invention relates to the field of proton exchange membrane fuel cells, in particular to a wet enthalpy conversion device of a proton exchange membrane fuel cell power generation system. technical background [0002] Proton exchange membrane fuel cell is an efficient and environment-friendly power generation device. It can be used as a power system for vehicles and boats, and can also be used as a portable, mobile, and fixed power generation device. [0003] The proton exchange membrane of a proton exchange membrane fuel cell needs water molecules to keep it moist during the operation of the battery. Therefore, the air supplied to the fuel cell generally needs to be humidified to increase the relative humidity of the air entering the fuel cell to prevent the proton exchange membrane from dehydrating. dehydration. At the same time of humidifying the air, increasing the temperature of the air can improve the power generation efficiency of the proton...

AI Technical Summary

Problems solved by technology

[0007] 1. Complex structure and high cost

[0008] 2. Large rotating torque and short service life

Due to the need for sealing, the pressure and friction between the friction pairs are large, and the speed of the wet-enthalpy conversion device is slow, and a lubricating liquid film cannot be formed between the friction pairs. Therefore, the rotation torque is large, the power of the motor is required, and the wear of the friction pairs is serious. Short life and reduced reliability

[0009] 3. The sealing effect is poor, and the air blow-by at the inlet and outlet of the wet enthalpy conversion device is large

Due to structural reasons, when connecting and installing to a fuel cell power generation system, it is easy to cause the upper and lower friction pairs to be non-parallel

[0012] 2. Complex structure

The wet-enthalpy conversion cylinder and floating end plate are designed to make the structure complex

[0013] 3. There are also the problems of large rotational torque, large friction between friction pairs, severe wear, short life, and reduced reliability

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