Fuel cell capable of maintaining stable gas pressure

Abstract

The utility model discloses a fuel cell capable of maintaining stable gas pressure, belongs to the technical field of fuel cells, and solves the problems that an existing device is inconvenient to adjust the gas pressure in the fuel cell, the voltage of the cell is easy to be unstable, and a machine connected with the existing device is damaged. Comprising an outer shell internally provided with a fuel battery pack, a pressure gauge is fixedly installed on the top face of the outer shell, a pressure adjusting assembly is arranged on the side face, close to a drainage pipe, of the outer shell, and the numerical value of air pressure in the outer shell is displayed through the pressure gauge; the flow speed of air in the pressurizing pipe can be increased, then the air pressure in the outer shell is increased, when the air pressure in the outer shell is large, the air entering the connecting pipe is discharged through the pressure relief pipe by opening the electric control valve, the purpose of conveniently adjusting the air pressure in the outer shell is achieved, and protection on a machine connected with the outer shell is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a fuel cell for maintaining stable gas pressure. Background Art

[0002] A fuel cell is an energy conversion device that converts the electrochemical energy of fuel into electrical energy. A fuel cell is a power generation device that converts the chemical energy in the fuel into electrical energy mainly through redox reactions with oxygen or other oxidants. The most common fuel is hydrogen. The voltage of the electricity generated by the fuel cell will change with the change of its internal gas pressure.

[0003] After searching, the application with patent number CN201620088625.2 discloses a fuel cell stack, including a first support rod, a second support rod and a plurality of groups of substrates, one end of each group of substrates is fixed on the first support rod, and the other end of each group of substrates is fixed on the second support rod; each group of substrates includes two identical substrates and a solid electrolyte membrane arranged between the two substrates, one end of each substrate is provided with a first through hole and a second through hole in sequence, and the other end of each substrate is provided with a third through hole and a fourth through hole in sequence, and each substrate is provided with groove channels on both the front and back sides, the first through hole is connected to the fourth through hole through the groove channel on the back side of the substrate, and the second through hole is connected to the third through hole through the groove channel on the front side of the substrate;

[0004] Although the fuel cell group adopts a combination of several groups of substrates, has a simple structure, and is easy to install and use, it is not easy to adjust the gas pressure inside the fuel cell, which can easily lead to unstable battery voltage and damage the machine connected to it.

[0005] Therefore, we propose a fuel cell that maintains a stable gas pressure. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a fuel cell that maintains stable gas pressure, solving the problem that the prior art devices are inconvenient to adjust the gas pressure inside the fuel cell, which easily leads to unstable battery voltage and damages the machine connected thereto.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a fuel cell for maintaining stable gas pressure, comprising an outer shell with a fuel cell group arranged inside, and a fuel pipe connected to a hydrogen storage tank and a drain pipe connected to a water circulation pump are fixedly installed on the left and right sides of the outer shell respectively;

[0008] A pressure gauge is fixedly mounted on the top surface of the outer shell, and a pressure regulating assembly is arranged on the side of the outer shell close to the drain pipe;

[0009] The pressure regulating assembly includes a connecting pipe fixedly installed on the side of the outer shell, the end of the connecting pipe away from the outer shell is fixedly connected to a boost pipe connected thereto, the end of the boost pipe away from the connecting pipe is fixedly connected to an air pipe connected thereto, and fan blades are arranged inside the boost pipe.

[0010] Preferably, the boost pipe is in the shape of a truncated cone with a hollow interior, a micro motor is fixedly mounted on the side wall of the boost pipe, and a fan blade is fixedly mounted on the output end of the micro motor passing through the side wall of the boost pipe, wherein the fan blade is driven to rotate by the micro motor, thereby increasing the circulation speed of the air inside the boost pipe, and by setting the boost pipe to be in the shape of a truncated cone, the pressure of the air inside the boost pipe can be increased when it flows into the interior of the connecting pipe.

[0011] Preferably, a pressure relief pipe connected to the connecting pipe is fixedly installed on the side of the connecting pipe, and an electric-controlled valve is fixedly installed on the pressure relief pipe, wherein the air entering the connecting pipe can be discharged through the pressure relief pipe, which can reduce the air flowing into the outer shell, thereby achieving the purpose of reducing the air pressure inside the outer shell, and the electric-controlled valve can be used to control whether the pressure relief pipe is open.

[0012] Preferably, there are four micromotors distributed in a row, wherein the fan blades at the output ends are driven to rotate by the four micromotors, so as to better increase the air circulation speed inside the boost pipe.

[0013] Preferably, the micro motor is connected to the positive and negative electrodes of the fuel cell group via connecting wires, so as to provide electrical energy for the micro motor.

[0014] The utility model provides a fuel cell that maintains stable gas pressure. It has the following beneficial effects:

[0015] 1. The fuel cell that maintains stable gas pressure displays the value of the gas pressure inside the outer shell through a pressure gauge. When the gas pressure inside the outer shell is low, the fan blades are driven to rotate by a micro motor, which can increase the flow rate of the gas inside the boost pipe. The boost pipe is set in a truncated cone shape, which can increase the pressure of the air inside the boost pipe when it flows into the inside of the connecting pipe, thereby increasing the gas pressure inside the outer shell. When the gas pressure inside the outer shell is high, the air entering the connecting pipe is discharged through the pressure relief pipe by opening the electric control valve, thereby reducing the amount of air entering the inner part of the outer shell, thereby reducing the gas pressure inside the outer shell, thereby achieving the purpose of facilitating the adjustment of the gas pressure inside the outer shell, and is beneficial to protecting the machine connected thereto. The use is simple and convenient, and solves the problem that the existing device is not convenient for adjusting the gas pressure inside the fuel cell, which easily causes the battery voltage to be unstable and damages the machine connected thereto;

[0016] 2. The fuel cell that maintains stable air pressure drives the fan blades at its output end to rotate through four micromotors, so as to better increase the air circulation speed inside the boost pipe, and connects the micromotors to the positive and negative electrodes of the fuel cell group to provide electrical energy for the micromotors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the voltage regulating assembly of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the boost pipe of the utility model.

[0021] In the figure: 1. outer shell; 2. pressure gauge; 3. fuel pipe; 4. drain pipe; 5. pressure regulating assembly; 51. connecting pipe; 52. boost pipe; 53. micro motor; 54. fan blades; 55. air pipe; 56. pressure relief pipe; 57. electronically controlled valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] like Figure 1-4As shown: it includes an outer shell 1 with a fuel cell group arranged inside, a fuel pipe 3 connected to a hydrogen storage tank and a drain pipe 4 connected to a water circulation pump are fixedly installed on the left and right sides of the outer shell 1 respectively, a pressure gauge 2 is fixedly installed on the top surface of the outer shell 1, a pressure regulating assembly 5 is arranged on the side of the outer shell 1 close to the drain pipe 4, the pressure regulating assembly 5 includes a connecting pipe 51 fixedly installed on the side of the outer shell 1, an end of the connecting pipe 51 away from the outer shell 1 is fixedly connected to a boosting pipe 52 connected thereto, an end of the boosting pipe 52 away from the connecting pipe 51 is fixedly connected to an air pipe 55 connected thereto, a fan blade 54 is arranged inside the boosting pipe 52, the boosting pipe 52 is a hollow truncated cone, a micro motor 53 is fixedly installed on the side wall of the boosting pipe 52, an output end of the micro motor 53 passes through the side wall of the boosting pipe 52 and is fixedly installed with a fan blade 54, and a side wall of the connecting pipe 51 is provided with a fan blade 54. A pressure relief pipe 56 connected to the outer shell 1 is fixedly installed on the surface, and an electric control valve 57 is fixedly installed on the pressure relief pipe 56. The value of the air pressure inside the outer shell 1 is displayed through the pressure gauge 2. When the air pressure inside the outer shell 1 is relatively low, the fan blade 54 is driven to rotate by the micro motor 53, which can increase the flow rate of the gas inside the boost pipe 52. The boost pipe 52 is set to a truncated cone shape, which can increase the pressure of the air inside it when it flows into the inside of the connecting pipe 51, thereby increasing the air pressure inside the outer shell 1. When the air pressure inside the outer shell 1 is relatively high, the air entering the inside of the connecting pipe 51 is discharged through the pressure relief pipe 56 by opening the electric control valve 57, thereby reducing the amount of air entering the inside of the outer shell 1, thereby reducing the air pressure inside the outer shell 1, thereby achieving the purpose of facilitating the adjustment of the air pressure inside the outer shell 1, and is beneficial to protecting the machine connected thereto, and is simple and convenient to use;

[0025] Embodiment 2:

[0026] like Figure 3-4 As shown: there are four micro motors 53 distributed in a row, and the micro motors 53 are connected to the positive and negative electrodes of the fuel cell group through connecting lines. The fan blades 54 at the output ends are driven to rotate by the four micro motors 53 to better increase the air circulation speed inside the boost pipe 52. The micro motors 53 are connected to the positive and negative electrodes of the fuel cell group to provide electrical energy for the micro motors 53.

[0027] Working principle and use process of the utility model: When the fuel cell that maintains stable gas pressure is used, the hydrogen in the hydrogen storage tank enters the interior of the outer shell 1 through the fuel pipe 3, and the external air passes through the pressure regulating component 5 and then enters the interior of the outer shell 1. The water produced by the reaction of hydrogen and oxygen is discharged through the drain pipe 4. When the external air enters the interior of the pressure regulating component 5, the air will enter the interior of the air pipe 55, the boost pipe 52 and the connecting pipe 51 in sequence, and finally enter the interior of the outer shell 1. The value of the internal gas pressure of the outer shell 1 is displayed by the pressure gauge 2. When the internal gas pressure of the outer shell 1 is low, the micro motor 53 can be started. The fan blades 54 are driven to rotate, thereby increasing the flow rate of the gas inside the boost pipe 52. The boost pipe 52 is set to be truncated cone-shaped, which can increase the pressure of the air inside it when it flows into the connecting pipe 51. Then the air quickly enters the interior of the outer shell 1 through the connecting pipe 51 to increase the internal air pressure. When the air pressure inside the outer shell 1 is relatively high, the micro motor 53 is first closed. If the internal air pressure of the outer shell 1 has not decreased, the electric control valve 57 is opened to allow the air entering the connecting pipe 51 to be discharged through the pressure relief pipe 56, thereby reducing the amount of air entering the outer shell 1, and then reducing the air pressure inside the outer shell 1.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fuel cell for maintaining stable gas pressure, comprising an outer shell (1) in which a fuel cell group is arranged, and a fuel pipe (3) connected to a hydrogen storage tank and a drainage pipe (4) connected to a water circulation pump are fixedly installed on the left and right sides of the outer shell (1); Features: A pressure gauge (2) is fixedly mounted on the top surface of the outer shell (1), and a pressure regulating assembly (5) is arranged on the side of the outer shell (1) close to the drain pipe (4); The pressure regulating assembly (5) comprises a connecting pipe (51) fixedly mounted on the side of the outer shell (1); one end of the connecting pipe (51) away from the outer shell (1) is fixedly connected to a boosting pipe (52) in communication with the connecting pipe; one end of the boosting pipe (52) away from the connecting pipe (51) is fixedly connected to an air pipe (55) in communication with the connecting pipe; and a fan blade (54) is arranged inside the boosting pipe (52).

2. A fuel cell for maintaining stable gas pressure according to claim 1, characterized in that: The boost tube (52) is in the shape of a truncated cone with a hollow interior, a micro motor (53) is fixedly mounted on the side wall of the boost tube (52), and a fan blade (54) is fixedly mounted on the output end of the micro motor (53) which passes through the side wall of the boost tube (52).

3. A fuel cell for maintaining stable gas pressure according to claim 1, characterized in that: A pressure relief pipe (56) in communication with the connecting pipe (51) is fixedly mounted on the side of the connecting pipe (51), and an electric control valve (57) is fixedly mounted on the pressure relief pipe (56).

4. A fuel cell for maintaining stable gas pressure according to claim 2, characterized in that: A total of four micromotors (53) are arranged and distributed in a row.

5. A fuel cell for maintaining stable gas pressure according to claim 2, characterized in that: The micro motor (53) is connected to the positive and negative electrodes of the fuel cell group via a connecting wire.

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