Hydrogen circulating system for fuel cell of hydrogen-powered unmanned aerial vehicle

Abstract

The invention discloses a hydrogen-powered unmanned aerial vehicle fuel cell hydrogen circulation system, and relates to the technical field of fuel cells, and the hydrogen-powered unmanned aerial vehicle fuel cell hydrogen circulation system comprises the following modules: a storage module which uses a high-pressure hydrogen cylinder to store hydrogen, is used for storing high-pressure hydrogen, and is used as a hydrogen source of a fuel cell. Through the arrangement of the system, the environment change can be monitored in real time through the external sensing module, the equipment is ensured to operate under a proper temperature condition, so that the energy conversion efficiency is improved, the heat preservation module intelligently adjusts the working environment temperature of the equipment according to data provided by the sensing module, overheating and supercooling are prevented, and the service life of the equipment is prolonged. The service life of the fuel cell is prolonged, the stability of the whole system is improved, the fuel cell and the fuel cell work cooperatively, the adaptability of equipment is enhanced, performance loss caused by environmental factors is reduced, and a powerful guarantee is provided for continuous and efficient operation of hydrogen energy equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a hydrogen circulation system for a fuel cell of a hydrogen-powered unmanned aerial vehicle. Background Art

[0002] Hydrogen-powered drones use hydrogen fuel cells to generate electricity and brake. They use the redox reaction of hydrogen and oxygen at electrodes to directly convert chemical energy into electrical energy. This battery produces electricity and water through electrochemical reactions and is pollution-free, noise-free and highly efficient. During the operation of hydrogen-powered drones, a hydrogen-powered drone fuel cell hydrogen circulation system is used.

[0003] A Chinese patent discloses a "hydrogen circulation system for a hydrogen-powered UAV fuel cell" with application number "CN202320224434.4". This patent recycles the unreacted hydrogen in the exhaust gas emitted by the proton exchange membrane fuel cell by setting an airbag, thereby increasing the utilization rate of hydrogen and reducing the operating cost of the proton exchange membrane fuel cell. However, when the UAV works in an extreme environment, the reaction of hydrogen and oxygen in the fuel cell will be affected by extreme weather, resulting in a decrease in the reaction rate of hydrogen and oxygen, which in turn leads to insufficient power supply to the fuel cell, affecting the normal operation of the UAV. To this end, we propose a hydrogen circulation system for a hydrogen-powered UAV fuel cell. Summary of the invention

[0004] The purpose of the present invention is to provide a hydrogen circulation system for a hydrogen-powered UAV fuel cell to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hydrogen circulation system for a hydrogen-powered UAV fuel cell, comprising the following modules:

[0006] A storage module uses a high-pressure hydrogen cylinder to store hydrogen, and is used to store high-pressure hydrogen as a hydrogen source for a fuel cell;

[0007] The reaction module is connected to the gas inlet of the fuel cell through the gas outlet of the high-pressure hydrogen bottle, and the water is produced by the chemical reaction between hydrogen and oxygen in the fuel cell, and the water is discharged from the drain pipe of the fuel cell;

[0008] The recovery module separates the excess hydrogen from water through a hydrogen separator, and recovers the separated hydrogen into a high-pressure hydrogen cylinder through an air pump;

[0009] The external environment perception module is used to perceive the working environment of the drone in real time by installing multiple temperature sensors around the fuel cell;

[0010] The heat preservation module, through the external environment modification module, determines whether the temperature of the surrounding environment is too high or too low, heats the working environment of the fuel cell through the heating wire, and cools the fuel cell through the heat sink and fan;

[0011] The hydrogen leakage sensing module installs hydrogen leakage detection sensors on the transmission pipeline and high-pressure hydrogen cylinder to monitor the leakage of hydrogen in real time.

[0012] Preferably, the temperature sensor is arranged in the temperature sensor, which converts the temperature information into electrical signals through the internal circuit for output. These electrical signals are amplified and filtered and then transmitted to the data acquisition module. The data acquisition module is responsible for receiving and storing the data from each temperature sensor, while ensuring the integrity and accuracy of the data, and transmitting the signal to the control unit of the insulation module. The control unit judges the external ambient temperature according to the preset temperature threshold. When the ambient temperature is lower than the preset minimum heating temperature, the control unit sends a start signal to the heating wire. When the ambient temperature is higher than the preset maximum cooling temperature, the control unit sends a start signal to the heat sink and the fan.

[0013] Preferably, infrared sensing technology is used to sense the concentration of hydrogen. When the hydrogen concentration exceeds a preset safety threshold, the sensor will immediately trigger an alarm signal and transmit the data to the control unit of the control module in real time. Through the preset threshold, the control unit of the brake module will send a signal to the relay to control the relay connected to the solenoid valve to close, stop delivering hydrogen, and control the relay connected to the sound and light alarm device to start working.

[0014] Preferably, the electrical signal uses a median filter valve to filter the acquired signal to remove noise, thereby ensuring the accuracy of the data.

[0015] Preferably, a one-way valve is installed on the connecting pipe between the air pump and the high-pressure hydrogen cylinder to prevent the backflow of hydrogen.

[0016] Preferably, after the brake module receives the signal transmitted by the hydrogen leakage sensing module, the control unit of the brake module can upload the acquired signal to the remote module in real time, and transmit the monitored data in real time.

[0017] Preferably, the hydrogen leak detection sensor should be installed at the connection of the transmission pipeline, the valve and the interface of the high-pressure hydrogen cylinder.

[0018] Preferably, the reaction module, the heat preservation module, the hydrogen leakage sensing module and the braking module are all powered by fuel cells.

[0019] Preferably, when the remote module sends a signal to the outside world, it follows the LoRa wireless communication protocol.

[0020] Preferably, the remote module stores the collected signals by encoding the signals.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By setting up this system, the present invention can monitor environmental changes in real time through the external sensing module to ensure that the equipment operates under suitable temperature conditions, thereby improving energy conversion efficiency. The insulation module intelligently adjusts the working environment temperature of the equipment according to the data provided by the sensing module, thereby preventing overheating and overcooling, extending the life of the fuel cell and improving the stability of the overall system. The two work together to not only enhance the adaptability of the equipment, but also reduce performance loss caused by environmental factors, providing a strong guarantee for the continuous and efficient operation of hydrogen energy equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a flowchart of the system of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example: See Figure 1 The present invention provides a technical solution: a hydrogen circulation system for a hydrogen-powered UAV fuel cell, comprising the following modules:

[0026] A storage module uses a high-pressure hydrogen cylinder to store hydrogen, and is used to store high-pressure hydrogen as a hydrogen source for a fuel cell;

[0027] The reaction module is connected to the gas inlet of the fuel cell through the gas outlet of the high-pressure hydrogen bottle, and the water is produced by the chemical reaction between hydrogen and oxygen in the fuel cell, and the water is discharged from the drain pipe of the fuel cell;

[0028] The recovery module separates the excess hydrogen from water through a hydrogen separator, and recovers the separated hydrogen into a high-pressure hydrogen cylinder through an air pump;

[0029] The external environment perception module is used to perceive the working environment of the drone in real time by installing multiple temperature sensors around the fuel cell;

[0030] The heat preservation module, through the external environment modification module, determines whether the temperature of the surrounding environment is too high or too low, heats the working environment of the fuel cell through the heating wire, and cools the fuel cell through the heat sink and fan;

[0031] Hydrogen leakage sensing module: hydrogen leakage detection sensors are installed on the transmission pipeline and high-pressure hydrogen cylinder to monitor hydrogen leakage in real time;

[0032] The braking module sends a detection signal to the braking module in real time through the hydrogen leakage sensing module, sets a threshold for the braking module, installs a solenoid valve at the outlet end of the high-pressure hydrogen cylinder, controls the opening and closing of the solenoid valve through a relay according to the height of the threshold, and connects the sound and light alarm device through the relay.

[0033] The temperature sensor is set at the temperature sensor, which converts the temperature information into electrical signals through the internal circuit for output. After amplification and filtering, these electrical signals are transmitted to the data acquisition module. The data acquisition module is responsible for receiving and storing data from each temperature sensor, while ensuring the integrity and accuracy of the data, and transmitting the signal to the control unit of the insulation module. The control unit judges the external ambient temperature according to the preset temperature threshold. When the ambient temperature is lower than the preset minimum heating temperature, the control unit sends a start signal to the heating wire. When the ambient temperature is higher than the preset maximum cooling temperature, the control unit sends a start signal to the heat sink and the fan.

[0034] Infrared sensing technology is used to sense the concentration of hydrogen. When the concentration of hydrogen exceeds the preset safety threshold, the sensor will immediately trigger an alarm signal and transmit the data to the control unit of the control module in real time. Through the preset threshold, the control unit of the brake module will send a signal to the relay to control the relay connected to the solenoid valve to close, stop the delivery of hydrogen, and control the relay connected to the sound and light alarm device to start working;

[0035] The electrical signal uses a median filter valve to filter the acquired signal and remove noise to ensure the accuracy of the data;

[0036] A one-way valve is installed on the connecting pipe between the gas pump and the high-pressure hydrogen cylinder to prevent the backflow of hydrogen;

[0037] Hydrogen leak detection sensors should be installed at the connection points of the transmission pipeline, valves and interfaces of high-pressure hydrogen cylinders;

[0038] The reaction module, insulation module, hydrogen leak sensing module and brake module are all powered by fuel cells;

[0039] When the remote module sends signals to the outside world, it follows the LoRa wireless communication protocol;

[0040] The remote module stores the collected signals by encoding them.

[0041] The specific implementation of this embodiment is as follows: hydrogen is compressed and stored in a high-pressure hydrogen cylinder, which is connected to a fuel cell through a pipeline. The gas outlet of the high-pressure hydrogen cylinder is connected to the gas inlet of the fuel cell. Hydrogen reacts with oxygen in the fuel cell to generate electricity and water. The water is discharged through the drain pipe of the fuel cell. The hydrogen separator separates the discharged hydrogen from the water. The air pump recycles the separated hydrogen to the high-pressure hydrogen cylinder. A one-way valve is installed on the connecting pipeline to prevent hydrogen reflux. Multiple temperature sensors are installed around the fuel cell. The temperature information is converted into electrical signal output through the internal circuit. These electrical signals are amplified and filtered, and then transmitted to the data acquisition module, and then to the control unit of the insulation module. The control unit collects the temperature information according to the preset temperature. The threshold determines the ambient temperature. When it is lower than the minimum heating temperature, the heating wire is started. When it is higher than the maximum cooling temperature, the heat sink and the fan are started. A hydrogen leak detection sensor is installed on the transmission pipeline and the high-pressure hydrogen cylinder. The infrared sensing technology is used to sense the hydrogen concentration. When the hydrogen concentration exceeds the preset safety threshold, an alarm signal is triggered, and the data is transmitted to the control unit of the control module in real time. The control unit of the brake module controls the relay connected to the solenoid valve to close according to the signal sent by the hydrogen leak sensing module, stops the hydrogen delivery, and controls the relay connection with the sound and light alarm device to start working. The remote module follows the LoRa wireless communication protocol to send signals to the outside world and encodes and stores the signals.

[0042] The coordinated work of the external environment sensing module and the heat preservation module ensures that the fuel cell operates at the optimal operating temperature, improves the energy conversion efficiency, and extends the service life of the fuel cell. The instant response of the hydrogen leakage sensing module and the braking module provides a high level of safety for the system and effectively prevents the dangers that may be caused by hydrogen leakage. In addition, the application of the remote module enables real-time monitoring of the system status, which is convenient for troubleshooting and maintenance.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen circulation system for a hydrogen-powered UAV fuel cell, characterized in that: Includes the following modules: A storage module uses a high-pressure hydrogen cylinder to store hydrogen, and is used to store high-pressure hydrogen as a hydrogen source for a fuel cell; The reaction module is connected to the gas inlet of the fuel cell through the gas outlet of the high-pressure hydrogen bottle, and the water is produced by the chemical reaction between hydrogen and oxygen in the fuel cell, and the water is discharged from the drain pipe of the fuel cell; The recovery module separates the excess hydrogen from water through a hydrogen separator, and recovers the separated hydrogen into a high-pressure hydrogen cylinder through an air pump; The external environment perception module is used to perceive the working environment of the drone in real time by installing multiple temperature sensors around the fuel cell; The heat preservation module, through the external environment modification module, determines whether the temperature of the surrounding environment is too high or too low, heats the working environment of the fuel cell through the heating wire, and cools the fuel cell through the heat sink and fan; Hydrogen leakage sensing module: hydrogen leakage detection sensors are installed on the transmission pipeline and high-pressure hydrogen cylinder to monitor hydrogen leakage in real time; The braking module sends a detection signal to the braking module in real time through the hydrogen leakage sensing module, sets a threshold for the braking module, installs a solenoid valve at the outlet end of the high-pressure hydrogen cylinder, controls the opening and closing of the solenoid valve through a relay according to the height of the threshold, and connects the sound and light alarm device through the relay.

2. A hydrogen circulation system for a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: The temperature sensor is arranged in the temperature sensor, which converts the temperature information into electrical signals through the internal circuit for output. After amplification and filtering, these electrical signals are transmitted to the data acquisition module. The data acquisition module is responsible for receiving and storing the data from each temperature sensor, while ensuring the integrity and accuracy of the data, and transmitting the signal to the control unit of the insulation module. The control unit judges the external ambient temperature according to the preset temperature threshold. When the ambient temperature is lower than the preset minimum heating temperature, the control unit sends a start signal to the heating wire. When the ambient temperature is higher than the preset maximum cooling temperature, the control unit sends a start signal to the heat sink and the fan.

3. A hydrogen circulation system for a hydrogen-powered UAV fuel cell according to claim 2, characterized in that: Infrared sensing technology is used to sense the concentration of hydrogen. When the hydrogen concentration exceeds the preset safety threshold, the sensor will immediately trigger an alarm signal and transmit the data to the control unit of the control module in real time. Through the pre-set threshold, the control unit of the brake module will send a signal to the relay to control the relay connected to the solenoid valve to close, stop delivering hydrogen, and control the relay connected to the sound and light alarm device to start working.

4. The hydrogen circulation system of a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: The electrical signal uses a median filter valve to filter the acquired signal to remove noise and ensure the accuracy of the data.

5. The hydrogen circulation system of a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: A one-way valve is installed on the connecting pipe between the air pump and the high-pressure hydrogen cylinder to prevent the backflow of hydrogen.

6. The hydrogen circulation system of a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: After the brake module receives the signal transmitted by the hydrogen leakage sensing module, it can upload the acquired signal to the remote module in real time through the control unit of the brake module, and transmit the monitored data in real time.

7. The hydrogen circulation system of a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: Hydrogen leak detection sensors should be installed at the joints of the transmission pipeline, valves and interfaces of high-pressure hydrogen cylinders.

8. The hydrogen circulation system of a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: The reaction module, insulation module, hydrogen leak sensing module and braking module are all powered by fuel cells.

9. The hydrogen circulation system of a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: When the remote module sends signals to the outside world, it follows the LoRa wireless communication protocol.

10. The hydrogen circulation system of a hydrogen-powered UAV fuel cell according to claim 1, characterized in that: The remote module stores the collected signals by encoding them.

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