Tubular fuel cell structure

Abstract

The utility model discloses a tubular fuel cell structure which comprises a shell, an air inlet pipe, an air exhaust pipe and a fuel gas inlet pipe, wherein the air inlet pipe and the air exhaust pipe are positioned on the upper end surface of the shell; an inner cover plate and a support ring are respectively arranged at the upper part and the lower part in the shell; a shunting pipe is arranged between the upper end surface of the shell and the inner cover plate, a main pipeline of the shunting pipe is communicated with the air inlet pipe, and a plurality of branch pipelines of the shunting pipe are respectively communicated with the air injection pipes in the plurality of hollow battery pipes; the supporting ring is fixed with the inner wall of the shell, the bottom of the hollow battery tube close to the supporting ring is connected with the supporting ring through a first connecting rib, and the bottoms of the adjacent hollow battery tubes are connected through a second connecting rib. The tubular fuel cell structure disclosed by the utility model is beneficial to full and rapid contact of fuel gas, air and the hollow cell tube, so that the reaction efficiency is improved, the hollow cell tube is prevented from shaking, and the stability and the reliability of the reaction of the fuel cell are improved.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a tubular fuel cell structure. Background Technology

[0002] Tubular fuel cells are an important form of solid oxide fuel cells (SOFCs), characterized by high efficiency, environmental friendliness, and wide applicability. The working principle of a tubular fuel cell is similar to other types of fuel cells, generating electrical energy through an electrochemical reaction between the anode and cathode. When fuel (such as hydrogen or natural gas) is oxidized at the anode, the generated electrons flow to the cathode through an external circuit. Simultaneously, oxygen is reduced at the cathode, generating oxygen ions. These oxygen ions move from the cathode to the anode via the solid electrolyte, completing the entire electrochemical reaction process.

[0003] A search revealed Chinese patent publication number CN117393800A, which discloses a tubular solid oxide carbon fuel cell structure and its continuous feeding method. The structure comprises five units: a carrier gas unit including carrier gas pipes, gas cylinders, valves, and flow meters; a solid carbon feeding unit including a storage tank connected to the reaction unit; an air feeding unit including an air compressor connected to the reaction unit; and a reaction unit including a fuel cell stack and connected corundum connecting pipes and a gasification reaction pipe. The existing fuel cell reaction efficiency is relatively low and requires further improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a tubular fuel cell structure that facilitates full and rapid contact between fuel gas, air, and the hollow fuel cell tube, thereby improving reaction efficiency and preventing the hollow fuel cell tube from shaking, thus improving the stability and reliability of the fuel cell reaction.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tubular fuel cell structure, comprising: a shell, an air inlet pipe and an air exhaust pipe located on the upper end face of the shell, and a fuel gas inlet pipe located on the lower end face of the shell; an inner cover plate and a support ring are respectively provided in the upper and lower parts of the shell, and a plurality of hollow battery tubes are provided at intervals between the inner cover plate and the support ring, the upper opening of the hollow battery tube is connected to the through hole of the inner cover plate, and an air injection pipe is embedded in the hollow battery tube through the through hole of the inner cover plate, the lower end of the hollow battery tube being a sealed end;

[0006] A shunt pipe is provided between the upper end face of the housing and the inner cover plate. The main pipe of the shunt pipe is connected to the air intake pipe, and several branch pipes of the shunt pipe are respectively connected to the air injection pipes inside several hollow battery tubes. The support ring is fixed to the inner wall of the housing. The bottom of the hollow battery tube near the support ring is connected to the support ring by a first connecting rib, and the bottom of adjacent hollow battery tubes is connected by a second connecting rib.

[0007] The following are further improvements to the above technical solution:

[0008] 1. In the above scheme, the plurality of hollow battery tubes include one hollow battery tube located in the central region, and the remaining hollow battery tubes are arranged at equal intervals around its perimeter.

[0009] 2. In the above scheme, the number of hollow battery tubes is 7.

[0010] 3. In the above scheme, the lower end of the gas injection tube is close to the bottom of the hollow battery tube.

[0011] 4. In the above scheme, the inner surface of the hollow battery tube facing the hollow battery tube is the cathode region, and the outer surface of the hollow battery tube is the anode region.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] This utility model relates to a fuel cell, whose battery carrier has several tubular fuel cell structures located on the same plane and spaced parallel to each other. A shunt pipe is provided between the upper end face of the shell and the inner cover plate. The main branch of this shunt pipe is connected to the air inlet pipe, and several branch pipes of the shunt pipe are respectively connected to the air injection pipes inside several hollow battery tubes. The support ring is fixed to the inner wall of the shell. The hollow battery tubes near the support ring are connected to the support ring by a first connecting rib, and adjacent hollow battery tubes are connected by a second connecting rib. This facilitates full and rapid contact between fuel gas, air and hollow battery tubes, improves reaction efficiency, prevents hollow battery tubes from shaking, and improves the stability and reliability of the fuel cell reaction. Attached Figure Description

[0014] Appendix Figure 1 This is a three-dimensional structural diagram of the tubular fuel cell structure of this utility model;

[0015] Appendix Figure 2 This is a cross-sectional view of the tubular fuel cell structure of this utility model;

[0016] Appendix Figure 3 This is a partial structural diagram of the tubular fuel cell structure of this utility model.

[0017] In the above attached figures: 1. Shell; 2. Air intake pipe; 3. Air exhaust pipe; 4. Fuel gas inlet pipe; 5. Inner cover plate; 51. Through hole; 6. Support ring; 7. Hollow battery tube; 71. Cathode area; 72. Anode area; 8. Diverter pipe; 81. Main pipeline; 82. Branch pipeline; 9. Gas injection pipe; 101. First connecting rib; 102. Second connecting rib. Detailed Implementation

[0018] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0019] Example 1: A tubular fuel cell structure includes: a housing 1, an air inlet pipe 2 and an air exhaust pipe 3 located on the upper end face of the housing 1, and a fuel gas inlet pipe 4 located on the lower end face of the housing 1; an inner cover plate 5 and a support ring 6 are respectively provided in the upper and lower parts of the housing 1, and a plurality of hollow battery tubes 7 are provided at intervals between the inner cover plate 5 and the support ring 6. The upper opening of the hollow battery tube 7 is connected to the through hole 51 of the inner cover plate 5, and an air injection pipe 9 is embedded in the hollow battery tube 7 through the through hole of the inner cover plate 5. The lower end of the hollow battery tube 7 is a sealed end.

[0020] A diversion pipe 8 is provided between the upper end face of the housing 1 and the inner cover plate 5. The main pipe 81 of the diversion pipe 8 is connected to the air intake pipe 2, and several branch pipes 82 of the diversion pipe 8 are respectively connected to the air injection pipes 9 in several hollow battery tubes 7. The support ring 6 is fixed to the inner wall of the housing 1. The bottom of the hollow battery tube 7 near the support ring 6 is connected to the support ring 6 by a first connecting rib 101, and the bottoms of adjacent hollow battery tubes 7 are connected by a second connecting rib 102.

[0021] The lower end of the aforementioned gas injection tube 9 is close to the bottom of the hollow battery tube 7.

[0022] The inner surface of the hollow battery tube 7 is the cathode region 71, and the outer surface of the hollow battery tube 7 is the anode region 72.

[0023] Example 2: A tubular fuel cell structure includes: a housing 1, an air inlet pipe 2 and an air exhaust pipe 3 located on the upper end face of the housing 1, and a fuel gas inlet pipe 4 located on the lower end face of the housing 1; an inner cover plate 5 and a support ring 6 are respectively provided in the upper and lower parts of the housing 1, and a plurality of hollow battery tubes 7 are provided at intervals between the inner cover plate 5 and the support ring 6. The upper opening of the hollow battery tube 7 is connected to the through hole 51 of the inner cover plate 5, and an air injection pipe 9 is embedded in the hollow battery tube 7 through the through hole of the inner cover plate 5. The lower end of the hollow battery tube 7 is a sealed end.

[0024] A diversion pipe 8 is provided between the upper end face of the housing 1 and the inner cover plate 5. The main pipe 81 of the diversion pipe 8 is connected to the air intake pipe 2, and several branch pipes 82 of the diversion pipe 8 are respectively connected to the air injection pipes 9 in several hollow battery tubes 7. The support ring 6 is fixed to the inner wall of the housing 1. The bottom of the hollow battery tube 7 near the support ring 6 is connected to the support ring 6 by a first connecting rib 101, and the bottoms of adjacent hollow battery tubes 7 are connected by a second connecting rib 102.

[0025] The aforementioned hollow battery tubes 7 include one hollow battery tube 7 located in the central region, and the remaining hollow battery tubes 7 are arranged at equal intervals around its perimeter.

[0026] The number of the aforementioned hollow battery tubes 7 is 7.

[0027] The lower end of the aforementioned gas injection tube 9 is close to the bottom of the hollow battery tube 7.

[0028] The inner surface of the hollow battery tube 7 is the cathode region 71, and the outer surface of the hollow battery tube 7 is the anode region 72.

[0029] The working principle is as follows: During operation, air enters the housing 1 through the air inlet pipe 2 and is transmitted to the bottom of the hollow battery tube 7 through the split pipe 8 and the air injection pipe 9. The air gradually contacts each area of ​​the hollow battery tube 7 from the bottom. At the same time, the fuel gas first enters the bottom of the housing 1, and then enters the hollow battery tube 7 through the gap between the support ring 6, the first connecting rib 101, and the second connecting rib 102. This allows the fuel cell to enter the periphery of several hollow battery tubes 7 evenly and quickly, which is conducive to the full and rapid contact between the fuel gas, air and the hollow battery tube, thus improving the reaction efficiency.

[0030] Meanwhile, the inner cover plate 5 can separate air and fuel gas, and the hollow battery tube 7 is connected to the support ring 6 through the first connecting rib 101 and the second connecting rib 102, which also prevents the hollow battery tube from shaking and improves the stability and reliability of the fuel cell reaction.

[0031] When the above-mentioned tubular fuel cell structure is adopted, a shunt pipe 8 is provided between the upper end face of the shell 1 and the inner cover plate 5. The main pipe 81 of the shunt pipe 8 is connected to the air inlet pipe 2, and several branch pipes 82 of the shunt pipe 8 are respectively connected to the air injection pipes 9 in several hollow battery tubes 7. The support ring 6 is fixed to the inner wall of the shell 1. The hollow battery tubes 7 near the support ring 6 are connected to the support ring 6 by the first connecting rib 101, and adjacent hollow battery tubes 7 are connected by the second connecting rib 102. This facilitates full and rapid contact between the fuel gas, air and the hollow battery tubes, improves the reaction efficiency, prevents the hollow battery tubes from shaking, and improves the stability and reliability of the fuel cell reaction.

[0032] When the above-mentioned tubular fuel cell structure is adopted, its battery carrier has several strip-shaped through holes located on the same plane and arranged in parallel and spaced apart. Several battery cells that contact the battery carrier are distributed at intervals on the upper and lower surfaces of the battery carrier. Each battery cell further includes an anode layer that contacts the battery carrier, an electrolyte layer located on the surface of the anode layer, and a cathode layer located on the surface of the electrolyte layer. This not only improves the overall structural strength of the fuel cell, but the flat structure also facilitates subsequent high-density installation, facilitates process implementation, improves the yield of the battery, and facilitates subsequent testing, maintenance, and replacement.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A tubular fuel cell structure, characterized in that: include: The housing (1), the air inlet pipe (2) and the air exhaust pipe (3) located on the upper end face of the housing (1), and the fuel gas inlet pipe (4) located on the lower end face of the housing (1); an inner cover plate (5) and a support ring (6) are respectively provided in the upper and lower parts of the housing (1), and a number of hollow battery tubes (7) are provided at intervals between the inner cover plate (5) and the support ring (6). The upper opening of the hollow battery tube (7) is connected to the through hole (51) of the inner cover plate (5), and an air injection pipe (9) is embedded in the hollow battery tube (7) through the through hole of the inner cover plate (5). The lower end of the hollow battery tube (7) is a sealed end. A diversion pipe (8) is provided between the upper end face of the housing (1) and the inner cover plate (5). The main pipe (81) of the diversion pipe (8) is connected to the air intake pipe (2), and several branch pipes (82) of the diversion pipe (8) are respectively connected to the air injection pipes (9) in several hollow battery tubes (7). The support ring (6) is fixed to the inner wall of the housing (1). The bottom of the hollow battery tube (7) near the support ring (6) is connected to the support ring (6) by a first connecting rib (101), and the bottoms of adjacent hollow battery tubes (7) are connected by a second connecting rib (102).

2. The tubular fuel cell structure according to claim 1, characterized in that: The plurality of hollow battery tubes (7) includes one hollow battery tube (7) located in the central region, and the remaining hollow battery tubes (7) are arranged at equal intervals around its perimeter.

3. The tubular fuel cell structure according to claim 2, characterized in that: The number of the plurality of hollow battery tubes (7) is 7.

4. The tubular fuel cell structure according to claim 1, characterized in that: The lower end of the gas injection tube (9) is close to the bottom of the hollow battery tube (7).

5. The tubular fuel cell structure according to claim 1, characterized in that: The inner surface of the hollow battery tube (7) facing the hollow battery tube (7) is the cathode region (71), and the outer surface of the hollow battery tube (7) is the anode region (72).

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