Portable proton exchange membrane stack power generation device

Abstract

The invention provides a portable proton exchange membrane stack power generation device which comprises a carbon fiber shell, and a proton exchange membrane stack, a hydrogen outlet electromagnetic valve, an air filter, an air heating device and an air fan which are integrated in the carbon fiber shell, the hydrogen outlet electromagnetic valve is connected with a hydrogen outlet of the proton exchange membrane stack through a hydrogen pipeline, the air filter is arranged in front of an air inlet of the proton exchange membrane stack, and an air heating device is further arranged close to the air inlet of the proton exchange membrane stack; the air fan is arranged at an air outlet of the proton exchange membrane stack; an air drainage plate and an air steering engine are arranged on one side of the air outlet of the proton exchange membrane stack on the carbon fiber shell; by changing the air flowing direction and speed of the proton exchange membrane electric pile, heat generated by the proton exchange membrane electric pile and efficient utilization of heat energy are utilized, so that required heat can be provided for the portable proton exchange membrane electric pile power generation device, and the low-temperature operation capability is met.

Description

Technical Field

[0001] This invention relates to the field of fuel cell power generation technology, and more specifically to a portable proton exchange membrane fuel cell power generation device. Background Technology

[0002] Currently, proton exchange membrane (PEM) power generation devices are mainly used in vehicle-mounted, marine, and stationary power generation applications. Because PEM stacks require preheating to operate successfully in low-temperature environments, portable power supplies face strict limitations in size and weight, and require greater environmental adaptability than vehicle-mounted, marine, and stationary power generation products. Given their low-temperature requirements and limited energy resources, there is currently no reasonable solution for their use. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a portable proton exchange membrane stack power generation device.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A portable proton exchange membrane fuel cell power generation device includes a carbon fiber shell and a proton exchange membrane fuel cell 1, a hydrogen outlet solenoid valve 2, an air filter 3, an air heating device 4, and an air fan 5 integrated within the carbon fiber shell. The hydrogen outlet solenoid valve 2 is connected to the hydrogen outlet of the proton exchange membrane fuel cell 1 via a hydrogen pipeline. The air filter 3 is located in front of the air inlet of the proton exchange membrane fuel cell 1. An air heating device 4 is also located adjacent to the air inlet of the proton exchange membrane fuel cell 1. The air fan 5 is located at the air outlet of the proton exchange membrane fuel cell 1. An air guide plate 7 and an air servo motor 6 are provided on the side of the air outlet of the proton exchange membrane fuel cell 1 on the carbon fiber shell.

[0005] Preferably, in the above-mentioned portable proton exchange membrane stack power generation device, the air guide plate 7 is electrically controlled and driven by the air servo motor 6, which supports dynamic angle adjustment from 0 to 90° and precisely controls the ratio of internal and external circulating air, and is the core structure of the system's thermal management.

[0006] Preferably, in the above-mentioned portable proton exchange membrane stack power generation device, the air diversion plate 7 is made of corrosion-resistant graphite composite material or metal material.

[0007] Beneficial effects: The aforementioned portable proton exchange membrane stack power generation device controls the air temperature entering the proton exchange membrane stack by changing the airflow direction and speed of the proton exchange membrane stack. Relying on its own heat generation and efficient utilization of thermal energy, it can provide the necessary heat for the portable proton exchange membrane stack power generation device to maintain its own temperature and meet the requirements for low-temperature operation. This effectively solves the problem that portable fuel cells cannot be used in low-temperature environments, improves the environmental adaptability of the portable proton exchange membrane stack power generation device, and accelerates the development of fuel cells in the field of portable power sources. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the portable proton exchange membrane stack power generation device described in this invention.

[0009] In the diagram: 1-Proton exchange membrane stack; 2-Hydrogen outlet solenoid valve; 3-Air filter. 4-Air heating device 5-Air fan 6-Air servo motor 7-Air deflector plate Detailed Implementation

[0010] The portable proton exchange membrane stack power generation device of the present invention will be described in detail below with reference to the embodiments and accompanying drawings.

[0011] Example 1 like Figure 1 As shown, the portable proton exchange membrane stack power generation device includes a carbon fiber shell and a proton exchange membrane stack 1, a hydrogen outlet solenoid valve 2, an air filter 3, an air heating device 4, and an air fan 5 integrated within the carbon fiber shell. The hydrogen outlet solenoid valve 2 is connected to the hydrogen outlet of the proton exchange membrane stack 1 via a hydrogen pipeline. The air filter 3 is located in front of the air inlet of the proton exchange membrane stack 1. An air heating device 4 is also located adjacent to the air inlet of the proton exchange membrane stack 1. The air fan 5 is located at the air outlet of the proton exchange membrane stack 1. An air guide plate 7 and an air servo motor 6 are provided on the side of the air outlet of the proton exchange membrane stack 1 on the carbon fiber shell. The air guide plate 7 is made of metal (or a corrosion-resistant graphite composite material). The air guide plate 7 is electrically controlled and driven by the air servo motor 6, supporting dynamic angle adjustment from 0-90° and precisely controlling the ratio of internal and external circulating air. It is the core structure of the system's thermal management.

[0012] The aforementioned portable proton exchange membrane fuel cell power generation device includes a proton exchange membrane fuel cell 1 as the power generation component, a hydrogen outlet solenoid valve 2 for controlling the discharge of hydrogen after the reaction in the proton exchange membrane fuel cell 1, and an air filter 3, an air heating device 4, an air fan 5, an air servo motor 6, and an air guide plate 7 for controlling the airflow required by the proton exchange membrane fuel cell 1. Specifically... The carbon fiber shell is used for structural and strength support of the system, providing fixed positions and protection for the various components of the system; The proton exchange membrane stack 1 is the power generation part of the device, used to provide electrical energy to the portable proton exchange membrane stack power generation device. It is the core component of the entire system and is the location of the system's electrochemical reaction. The hydrogen outlet solenoid valve 2 is used to control the discharge of residual hydrogen from the anode reaction of the proton exchange membrane stack. Through the intermittent operation of the solenoid valve, the hydrogen that has been reacted in the proton exchange membrane stack is discharged. The air filter 3 is used to filter out toxic and harmful substances in the air, filter the outside air, block pollutants such as carbon monoxide and sulfur dioxide, and improve the service life of the proton exchange membrane stack. The air heating device 4 is used to heat the flowing air, defrost the proton exchange membrane stack, and make it work more stably. When the air is in a low temperature environment, the flowing air is heated by passing through the heating device. The air servo motor is used to control the air guide plate to change the air flow direction and flow rate. The air blower 5 is used to circulate air, providing a source and power for the flow of air to the proton exchange membrane stack, ensuring the efficient reaction of the proton exchange membrane stack. The air servo motor 6 provides mechanical power to the air guide plate 7, adjusting its angle in real time. The air guide plate 7 guides the flowing air, controlling its direction and speed. The air guide plate 7 is positioned on the air outlet side of the proton exchange membrane stack 1 on the carbon fiber shell, adjacent to the air blower outlet. This location offers three main advantages: First, it directly controls the direction of airflow from the stack; during internal circulation, the air circulates and heats between the stack, heating device, and blower, while during external circulation, heat is quickly dissipated, shortening the low-temperature start-up time. Second, it forms a compact closed-loop airflow channel with the air filter and heating device, reducing pipeline redundancy and adapting to the space constraints of portable equipment. Third, engineering verification shows that this location avoids airflow collisions, improves intake efficiency, and enhances system reliability. The air diversion plate can close the air outlet, allowing air to circulate internally within the fuel cell stack, enhancing heating efficiency and shortening heating time. Alternatively, it can close the internal circulation, rapidly expelling air from the stack. The air diversion plate can dynamically adjust the ratio of internal to external circulating air, achieving precise temperature control: In low-temperature environments, the diversion plate closes the outlet, creating internal circulation, where air circulates and heats within the stack. Combined with secondary heating by the PTC heater and temperature sensor feedback, the PID controller dynamically adjusts the heating power, achieving rapid temperature rise from -40℃ to 55℃ (reducing time by 30%). In high-temperature environments, the diversion plate activates external circulation, the fan accelerates the expulsion of hot air, and external cold air enters through the air filter, creating convection cooling. Based on a load current and ambient temperature MAP, the PWM speed-controlled fan precisely controls the airflow. Therefore, the portable proton exchange membrane fuel cell power generation device controls the direction and flow rate of air to regulate the temperature of the air entering the stack, enabling low-temperature operation and improving its environmental adaptability.

[0013] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications are considered to be within the scope of protection of the present invention.

Claims

1. A portable proton exchange membrane stack power generation device, characterized in that: The device includes a carbon fiber shell and a proton exchange membrane fuel cell stack, a hydrogen outlet solenoid valve, an air filter, an air heating device, and an air fan integrated within the carbon fiber shell. The hydrogen outlet solenoid valve is connected to the hydrogen outlet of the proton exchange membrane fuel cell stack via a hydrogen pipeline. The air filter is located in front of the air inlet of the proton exchange membrane fuel cell stack. An air heating device is also located adjacent to the air inlet of the proton exchange membrane fuel cell stack. The air fan is located at the air outlet of the proton exchange membrane fuel cell stack. An air guide plate and an air servo motor are provided on the side of the air outlet of the proton exchange membrane fuel cell stack on the carbon fiber shell.

2. The portable proton exchange membrane stack power generation device according to claim 1, characterized in that: The air deflector plate achieves 0-90° electric control transmission via an air servo motor.

3. The portable proton exchange membrane stack power generation device according to claim 1, characterized in that: The air diversion plate is made of corrosion-resistant graphite composite material or metal.

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