Pressure control equipment for fuel cell

Abstract

The invention relates to pressure control equipment for a fuel cell, and belongs to the field of associated equipment of a fuel cell, in particular to auxiliary pressure balance equipment for a fuel cell used in the field of new energy automobiles. The pressure control equipment comprises a tubular shell, wherein a first isolation part and a second isolation part are arranged in the shell; the inside of the shell is partitioned into a fuel gas cavity, an air cavity and a pressure-regulating cavity; the fuel gas cavity and the pressure-regulating cavity are sealed and isolated through the movable first isolation part; the air cavity and the pressure-regulating cavity are sealed and isolated through the movable second isolation part; the fuel gas cavity is used for communicating with a fuel gas source; the air cavity is used for communicating with an air source; the pressure-regulating cavity is used for communicating with an inflating and deflating device. In the structure, the pressure difference between the fuel gas cavity and the air cavity can be balanced in real time through the principle that the first isolation part and the second isolation part can move under the pressure difference; moreover, the air pressures in the fuel gas cavity and the air cavity can be regulated to a required air pressure range in real time through the pressure-regulating cavity; the pressure-regulating cavity is connected to the two sides of the fuel cell, so that pressure keeping and pressure balancing in the fuel cell are realized.

Description

technical field [0001] The invention relates to a pressure control device for a fuel cell, belonging to the field of supporting equipment for the fuel cell, in particular to a device for providing auxiliary pressure equalization for the fuel cell used in the field of new energy vehicles. Background technique [0002] Fuel cells are widely used, not only in the fields of military, space, power plants, but also in motor vehicles, mobile devices, and households. Early fuel cell development focused on specialized applications such as military space and distributed power generation above the kilowatt level. The field of electric vehicles has become the main direction of the application of fuel cells, and a variety of automatic vehicles that use fuel cells to generate electricity have appeared in the market. In addition, the application of fuel cells to general consumer electronic products through miniaturized technology is also one of the application development directions. With...

AI Technical Summary

Problems solved by technology

Since the hydrogen and oxygen in the fuel cell must be fully humidified and maintained at pressure, if the pressure or humidity is not enough, it will easily cause fuel waste and indiscriminate combustion, which will affect the use and output power of the battery

[0003] When the existing hydrogen fuel cell is used, it is often necessary to adjust the air pressure, temperature, and humidity entering the fuel cell to ensure that the gas can be used. Because the air pressure entering the fuel cell has been controlled and proportioned for a long period of time, the air pressure Fluctuation increases, and it is easy to form a pressure difference between the two poles of the battery, causing damage to the battery, so the service life of the fuel cell

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