Solid oxide fuel cell structure convenient for edge sealing

Abstract

The utility model discloses a solid oxide fuel cell structure convenient for edge sealing. The solid oxide fuel cell structure comprises a solid oxide fuel cell outer shell and a solid oxide fuel cell upper sealing cover arranged at the upper end of the solid oxide fuel cell outer shell, a ventilation channel is formed in the inner position of the anti-explosion gas leakage body, a limiting connection lifting column is arranged at the side face position of the ventilation channel, and an extrusion reset spring is arranged at the upper side position of the limiting connection lifting column, so that when the air pressure in the outer shell of the solid oxide fuel cell is relatively high, the anti-explosion gas leakage body can be jacked up; gas in the solid oxide fuel cell outer shell flows out along the ventilation channel, so that air pressure balance is formed inside and outside the solid oxide fuel cell outer shell, and anti-explosion gas is reset again due to the action of elastic force of the extrusion reset spring; and the phenomenon that too high pressure possibly causes increase of mechanical stress in the battery and adverse effects on the structural stability of the battery are effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field related to solid oxide fuel cells, and in particular relates to a solid oxide fuel cell structure which is convenient for edge sealing. Background Art

[0002] Solid Oxide Fuel Cell (SOFC) belongs to the third generation of fuel cells. It is an all-solid-state chemical power generation device that directly converts the chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner at medium and high temperatures. It is one of the fuel cells with the highest theoretical energy density. It is generally believed that it will be widely used in the future like proton exchange membrane fuel cells (PEMFC). Among all fuel cells, SOFC has the highest operating temperature and belongs to high-temperature fuel cells. In recent years, distributed power stations have gradually become an important part of the world's energy supply due to their low cost and high maintainability. Since the exhaust gas of SOFC power generation has a high temperature and high utilization value, it can provide the heat required for natural gas reforming, can also be used to produce steam, and can form a combined cycle with gas turbines, which is very suitable for distributed power generation. The combined power generation system composed of fuel cells, gas turbines, steam turbines, etc. not only has a high power generation efficiency, but also has the environmental benefit of low pollution. The appropriate pressure inside the solid oxide fuel cell can promote the full mixing and reaction of fuel and oxidant, thereby improving the efficiency of the battery. However, excessively high pressure may lead to increased mechanical stress inside the battery, adversely affecting the structural stability of the battery.

[0003] The utility model improves the above-mentioned problem and specifically relates to a solid oxide fuel cell structure with constant pressure and convenient edge sealing. Utility Model Content

[0004] The purpose of the utility model is to provide a solid oxide fuel cell structure that is easy to seal at the edge, so as to solve the problem that the appropriate pressure inside the solid oxide fuel cell proposed in the above background technology can promote the full mixing and reaction of the fuel and the oxidant, thereby improving the efficiency of the battery. However, too high a pressure may increase the mechanical stress inside the battery, which has an adverse effect on the structural stability of the battery.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a solid oxide fuel cell structure that is easy to seal at the edge, comprising a solid oxide fuel cell outer shell and a solid oxide fuel cell upper cover arranged at the middle upper end position of the solid oxide fuel cell outer shell;

[0006] The upper cover of the solid oxide fuel cell is provided with an explosion-proof gas, a ventilation groove is provided at the internal position of the explosion-proof gas, a limited position connection lifting column is provided at the side position of the ventilation groove, and an extrusion reset spring is provided at the upper side position of the limited position connection lifting column. When the air pressure inside the solid oxide fuel cell outer shell is relatively large, the explosion-proof gas will be lifted up, and the gas inside the solid oxide fuel cell outer shell will flow out along the ventilation groove, so that the air pressure inside and outside the solid oxide fuel cell outer shell is balanced, and the explosion-proof gas is reset due to the elastic force of the extrusion reset spring.

[0007] Preferably, a handle mounting buckle groove is provided at the middle position of the upper end of the solid oxide fuel cell upper cover, and a flip connecting handle is provided at the middle position of the handle mounting buckle groove, and the flip connecting handle is rotatably connected to the solid oxide fuel cell upper cover in the handle mounting buckle groove through a rotating shaft.

[0008] Preferably, a connection plug hole is provided at the left side of the upper cover of the solid oxide fuel cell, and a contact metal contact piece is provided in the connection plug hole.

[0009] Preferably, an upper connector plate is provided at the bottom of the upper cover of the solid oxide fuel cell, and the bottom side surface of the upper connector plate is a strip-shaped through-groove structure.

[0010] Preferably, an anode plate is disposed at the bottom of the upper connector plate, an electrolyte plate is disposed at the bottom of the anode plate, and a cathode plate is disposed at the bottom of the electrolyte plate.

[0011] Preferably, a lower connector plate is provided at the bottom of the cathode plate, left and right air ducts are provided on the upper side of the lower connector plate, and the same air ducts are provided at the front and rear sides of the lower side of the lower connector plate.

[0012] Preferably, a lower mounting plate is provided at the bottom of the lower connector plate, and the lower mounting plate is a packaging plate at the bottom of the solid oxide fuel cell outer shell, and is mounted and connected to the solid oxide fuel cell outer shell by screws.

[0013] Compared with the prior art, the utility model provides a solid oxide fuel cell structure that is easy to seal at the edge, and has the following beneficial effects:

[0014] 1. In a solid oxide fuel cell structure that is easy to seal at the edge, an explosion-proof gas is arranged on the upper cover of the solid oxide fuel cell, a ventilation groove is arranged at the internal position of the explosion-proof gas, a limited position connection lifting column is arranged at the side position of the ventilation groove, and an extrusion reset spring is arranged at the upper side position of the limited position connection lifting column. When the air pressure inside the solid oxide fuel cell outer shell is relatively large, the explosion-proof gas will be lifted up, and the gas inside the solid oxide fuel cell outer shell will flow out along the ventilation groove, so that the air pressure inside and outside the solid oxide fuel cell outer shell is balanced, and the explosion-proof gas is reset due to the elastic force of the extrusion reset spring. The explosion-proof gas can keep the pressure inside the solid oxide fuel cell constant, thereby effectively avoiding the phenomenon that excessive pressure may cause an increase in mechanical stress inside the battery and have an adverse effect on the structural stability of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the solid oxide fuel cell structure that is easy to seal at the edge of the utility model.

[0016] Figure 2 The utility model is a schematic diagram of the overall cross-sectional structure of a solid oxide fuel cell structure that is easy to seal at the edge.

[0017] Figure 3 It is a schematic diagram of the enlarged structure of the explosion-proof gas leakage position of the solid oxide fuel cell structure that is easy to seal at the edge of the utility model.

[0018] In the figure: 1. outer shell of solid oxide fuel cell; 2. upper cover of solid oxide fuel cell; 3. mounting buckle groove of handle; 4. flip connection handle; 5. connection plug hole; 6. upper connector plate; 7. anode plate; 8. electrolyte plate; 9. cathode plate; 10. lower connector plate; 11. lower mounting plate; 12. explosion-proof gas leakage; 13. extrusion reset spring; 14. limit connection lifting column; 15. ventilation channel. DETAILED DESCRIPTION

[0019] 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.

[0020] The utility model provides Figure 1-3As shown, a solid oxide fuel cell structure that is easy to seal at the edge includes a solid oxide fuel cell outer shell 1 and a solid oxide fuel cell upper cover 2 arranged at the middle upper end position of the solid oxide fuel cell outer shell 1; an explosion-proof gas 12 is arranged on the solid oxide fuel cell upper cover 2, a ventilation channel 15 is arranged at the internal position of the explosion-proof gas 12, a limited position connecting lifting column 14 is arranged at the side position of the ventilation channel 15, and an extrusion reset spring 13 is arranged at the upper side position of the limited position connecting lifting column 14. When the air pressure inside the solid oxide fuel cell outer shell 1 is relatively large, the explosion-proof gas 12 will be lifted up, and the gas inside the solid oxide fuel cell outer shell 1 will flow out along the ventilation channel 15, so that the air pressure inside and outside the solid oxide fuel cell outer shell 1 is balanced, and the explosion-proof gas 12 is reset due to the elastic force of the extrusion reset spring 13. The explosion-proof gas can keep the pressure inside the solid oxide fuel cell constant, thereby effectively avoiding the phenomenon that excessive pressure may cause an increase in mechanical stress inside the battery and have an adverse effect on the structural stability of the battery.

[0021] like Figure 1 As shown, a handle mounting buckle groove 3 is provided at the middle position of the upper end of the solid oxide fuel cell upper cover 2, and a flip connection handle 4 is provided at the middle position of the handle mounting buckle groove 3. The flip connection handle 4 is rotatably connected to the solid oxide fuel cell upper cover 2 in the handle mounting buckle groove 3 through a rotating shaft. The setting of the flip connection handle 4 is convenient for the user to lift and move the solid oxide fuel cell.

[0022] like Figure 1 As shown, a connection plug hole 5 is provided at the left side of the upper cover 2 of the solid oxide fuel cell, and a contact metal contact is provided in the connection plug hole 5. The connection plug hole 5 is used to plug in a connection line to connect to an external device for power supply.

[0023] like Figure 2As shown, an upper connector plate 6 is arranged at the bottom position of the upper cover 2 of the solid oxide fuel cell, the bottom side surface of the upper connector plate 6 is a strip-shaped through groove structure, an anode plate 7 is arranged at the bottom position of the upper connector plate 6, an electrolyte plate 8 is arranged at the bottom position of the anode plate 7, a cathode plate 9 is arranged at the bottom position of the electrolyte plate 8, a lower connector plate 10 is arranged at the bottom position of the cathode plate 9, left and right air channels are arranged on the upper side surface of the lower connector plate 10, and the lower side surface of the lower connector plate 10 is provided with front and rear identical air channels, the fuel gas is adsorbed on the surface of the anode plate 7 having a catalytic effect, and diffused to the interface between the anode and the electrolyte through the porous structure of the cathode plate 9. Oxygen or air is continuously introduced into one side of the cathode plate 9, and oxygen is adsorbed on the surface of the cathode plate 9 having a porous structure. Due to the catalytic effect of the cathode plate 9 itself, electrons are obtained and converted into O2-. Under the action of chemical potential, O2- enters the solid oxygen ion conductor acting as the electrolyte plate 8, diffuses due to the concentration gradient, and finally reaches the interface between the solid electrolyte and the anode plate 7, reacts with the fuel gas, and the lost electrons return to the cathode plate 9 through the external circuit.

[0024] like Figure 2 As shown, a lower mounting plate 11 is provided at the bottom of the lower connector plate 10. The lower mounting plate 11 is a packaging plate at the bottom of the solid oxide fuel cell outer shell 1. The lower mounting plate 11 is mounted and connected to the solid oxide fuel cell outer shell 1 by screws. The lower mounting plate 11 plays a role of sealing and receiving.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid oxide fuel cell structure that facilitates edge sealing, comprising: A solid oxide fuel cell outer shell (1) and a solid oxide fuel cell upper cover (2) arranged at the middle upper end of the solid oxide fuel cell outer shell (1); Features: The solid oxide fuel cell upper cover (2) is provided with an explosion-proof gas leakage (12), a ventilation channel (15) is provided at an internal position of the explosion-proof gas leakage (12), a limited position connecting lifting column (14) is provided at a side position of the ventilation channel (15), and an extrusion return spring (13) is provided at an upper side position of the limited position connecting lifting column (14).

2. A solid oxide fuel cell structure that facilitates edge sealing according to claim 1, characterized in that: A handle mounting buckle groove (3) is provided at the middle position of the upper end of the solid oxide fuel cell upper cover (2), and a flip connection handle (4) is provided at the middle position of the handle mounting buckle groove (3). The flip connection handle (4) is rotatably connected to the solid oxide fuel cell upper cover (2) in the handle mounting buckle groove (3) via a rotating shaft.

3. A solid oxide fuel cell structure that facilitates edge sealing according to claim 2, characterized in that: A connection plug hole (5) is provided at the left side of the upper cover (2) of the solid oxide fuel cell, and a contact metal contact piece is provided in the connection plug hole (5).

4. A solid oxide fuel cell structure that facilitates edge sealing according to claim 1, characterized in that: An upper connector plate (6) is provided at the bottom of the solid oxide fuel cell upper cover (2), and the bottom side surface of the upper connector plate (6) is a strip-shaped through-groove structure.

5. A solid oxide fuel cell structure that facilitates edge sealing according to claim 4, characterized in that: An anode plate (7) is arranged at the bottom of the upper connector plate (6), an electrolyte plate (8) is arranged at the bottom of the anode plate (7), and a cathode plate (9) is arranged at the bottom of the electrolyte plate (8).

6. A solid oxide fuel cell structure that facilitates edge sealing according to claim 5, characterized in that: A lower connector plate (10) is provided at the bottom of the cathode plate (9), left and right air ducts are provided on the upper side of the lower connector plate (10), and front and rear identical air ducts are provided at the lower side of the lower connector plate (10).

7. A solid oxide fuel cell structure that facilitates edge sealing according to claim 6, characterized in that: A lower mounting plate (11) is provided at the bottom of the lower connector plate (10); the lower mounting plate (11) is a packaging plate at the bottom of the solid oxide fuel cell outer shell (1) and is mounted and connected to the solid oxide fuel cell outer shell (1) by means of screws.

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