Solid oxide fuel cell connector

Abstract

The utility model relates to the field of fuel cells, in particular to a solid oxide fuel cell connector, which comprises a base, an anode plate arranged at the upper end of the base, an electrolyte layer arranged at the upper end of the anode plate, a cathode plate arranged at the upper end of the electrolyte layer, a coping arranged at the upper end of the cathode plate, and a cooling groove arranged on the surface of the coping. A cooling plate is fixedly mounted at the upper end of the cooling tank, a runner assembly is arranged at the upper end of the anode plate, the same runner assembly is arranged at the lower end of the cathode plate, sealing strips are fixedly connected to the front and rear sides of the upper end of the anode plate, and same sealing strips are fixedly connected to the front and rear sides of the lower end of the cathode plate; according to the solid oxide fuel cell connector disclosed by the utility model, the accurate assembly of the cell in the base and the coping is realized by using the sealing material, the integrity and the sealing property of the cell are improved, and the anode plate, the electrolyte layer and the cathode plate are sequentially connected through the sealing strips to form a self-sealing compact area, so that the sealing integrity of the internal cell is ensured.

Description

Technical Field

[0001] The utility model relates to the field of fuel cells, in particular to a solid oxide fuel cell connector. Background Art

[0002] A solid oxide fuel cell (SOFC) is an all-solid-state component energy conversion device that converts the chemical energy in fuel and oxidant directly into electrical energy. Unlike conventional batteries, its fuel and oxidant are stored externally. During operation, fuel and oxidant must be continuously fed into the cell while the reaction products are discharged. The connector is the core component of the SOFC, separating the fuel and air while electrically connecting the unit cells.

[0003] Existing solid oxide fuel cells are high-temperature fuel cells. The temperature is extremely high during operation. High temperature will cause the physical properties of the material to change, generating thermal stress, which may lead to sealing difficulties, thereby affecting the sealing effect and affecting the battery life.

[0004] Therefore, in order to address the problem that high temperature affects the sealing of the connector during operation of the above-mentioned existing fuel cells, a solid oxide fuel cell connector can be designed to add a sealing structure to improve the integrity and sealing of the battery, while adding a cooling structure to evenly cool the battery, reduce the thermal stress inside the battery, and increase the battery life. Utility Model Content

[0005] In order to overcome the problem that high temperature affects the sealing of the connector during operation of existing fuel cells.

[0006] The technical solution of the utility model is: a solid oxide fuel cell connector, including a base, an anode plate is provided at the upper end of the base, an electrolyte layer is provided at the upper end of the anode plate, a cathode plate is provided at the upper end of the electrolyte layer, a pressure top is provided at the upper end of the cathode plate, a cooling groove is provided on the surface of the pressure top, a cooling plate is fixedly installed at the upper end of the cooling groove, a flow channel assembly is provided at the upper end of the anode plate, the same flow channel assembly is provided at the lower end of the cathode plate, sealing strips are fixedly connected to the front and rear sides of the upper end of the anode plate, and the same sealing strips are fixedly connected to the front and rear sides of the lower end of the cathode plate.

[0007] Preferably, air guide holes are provided at both left and right ends of the base, and a sealing groove is provided on the inner side of the base to provide fuel or oxidant for the fuel cell.

[0008] Preferably, a sealing rib is provided at the lower end of the pressure top, the surface of the sealing rib is covered with sealing material, the sealing rib is adapted to the sealing groove, and the sealing material is used to achieve precise assembly of the base and the pressure top, thereby improving the sealing performance of the seal.

[0009] Preferably, a cooling channel is provided in the cooling plate, a liquid inlet is provided at the left end of the cooling plate, and liquid outlets are provided on both the front and rear sides of the liquid inlet. The cooling medium passes through the liquid inlet and the cooling channel and is discharged from the liquid outlet, which can effectively cool the battery.

[0010] Preferably, three external connection holes are provided at the left end of the pressing top, and are connected to the liquid inlet and the liquid outlet respectively, so that the liquid can be inlet and outlet at the left side of the pressing top, which is convenient for operation.

[0011] Preferably, the flow channel assembly includes rectangular ribs, which are distributed at equal intervals, and flow channels are arranged between the rectangular ribs. An air inlet is arranged on the left side of the flow channel, and there are three air inlets. The extension direction of the rectangular ribs is the flow direction of the gas material, and the uniformity of the gas flow is improved.

[0012] Preferably, an air outlet is provided on the right side of the flow channel, and two air outlets are provided. The flow channel is connected to the air inlet and the air outlet respectively, so as to improve the uneven heat distribution of the battery chemical reaction.

[0013] Beneficial effects of the utility model:

[0014] 1. The solid oxide fuel cell connector uses sealing materials to achieve precise assembly of the battery in the base and pressure top, improving the integrity and sealing of the battery. The sealing strips sequentially connect the anode plate, electrolyte layer, and cathode plate to form a self-sealing dense area, ensuring the integrity of the internal battery seal.

[0015] 2. The solid oxide fuel cell connector is equipped with a cooling plate. When in use, the cooling medium enters the liquid inlet through the external hole and is discharged from the liquid outlet through the cooling channel, effectively cooling the battery. The serpentine cooling channel cools the battery evenly and has a good cooling effect, avoiding excessive temperature gradients in the battery, reducing the thermal stress inside the battery, and increasing the battery life to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the explosion structure of the solid oxide fuel cell connector of the present invention;

[0017] Figure 2 Shown is a schematic diagram of the overall structure of the solid oxide fuel cell connector of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the structure of the anode and cathode plates of the solid oxide fuel cell connector of the present invention;

[0019] Figure 4 Shown is a schematic diagram of the structure of the cooling plate of the solid oxide fuel cell connector of the present invention;

[0020] Figure 5 Shown is a schematic diagram of the solid oxide fuel cell connector base and pressure top structure of the present invention.

[0021] Explanation of the accompanying drawings: 1. Base; 11. Air guide hole; 12. Sealing groove; 2. Anode plate; 3. Electrolyte layer; 4. Cathode plate; 5. Press top; 51. Sealing rib; 52. Sealing material; 53. External hole; 6. Cooling plate; 61. Cooling channel; 62. Liquid inlet; 63. Liquid outlet; 64. Cooling groove; 7. Channel assembly; 71. Rectangular rib; 72. Channel; 73. Air inlet; 74. Air outlet; 8. Sealing strip. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figure 1-Figure 5 The utility model provides an embodiment: a solid oxide fuel cell connector, including a base 1, an anode plate 2 is provided at the upper end of the base 1, an electrolyte layer 3 is provided at the upper end of the anode plate 2, a cathode plate 4 is provided at the upper end of the electrolyte layer 3, a pressure top 5 is provided at the upper end of the cathode plate 4, a cooling groove 64 is provided on the surface of the pressure top 5, a cooling plate 6 is fixedly installed at the upper end of the cooling groove 64, a flow channel assembly is provided at the upper end of the anode plate 2, and the same flow channel assembly is provided at the lower end of the cathode plate 4, a sealing strip 8 is fixedly connected to the front and rear sides of the upper end of the anode plate 2, and a sealing strip 8 is fixedly connected to the lower end of the cathode plate 4. The front and rear sides of the end are fixedly connected with the same sealing strip 8, the left and right ends of the base 1 are provided with air guide holes 11, the inner side of the base 1 is provided with a sealing groove 12, and the lower end of the pressure top 5 is provided with a sealing rib 51, and the surface of the sealing rib 51 is covered with a sealing material 52. The sealing rib 51 is adapted to the sealing groove 12, and the sealing material 52 is used to achieve precise assembly of the battery in the base 1 and the pressure top 5, thereby improving the sealing of the seal, and the anode plate 2, the electrolyte layer 3 and the cathode plate 4 are connected in sequence through the sealing strip 8 to form a self-sealing dense area, thereby ensuring the integrity and sealing of the battery seal.

[0024] Please refer to 1. Figure 2 and Figure 4 In this embodiment, a cooling channel 61 is provided in the cooling plate 6, a liquid inlet 62 is provided at the left end of the cooling plate 6, and liquid outlets 63 are provided on both the front and rear sides of the liquid inlet 62. Three external connection holes 53 are provided at the left end of the pressure top 5, and are respectively connected to the liquid inlet 62 and the liquid outlet 63. When in use, the cooling medium enters the liquid inlet 62 through the external connection holes 53, and is discharged from the liquid outlet 63 through the cooling channel 61, which can effectively cool the battery. The cooling channel with a serpentine structure cools evenly and has a good cooling effect, thereby avoiding excessive temperature gradients in the battery, reducing the thermal stress inside the battery, and increasing the battery life to a certain extent.

[0025] Please refer to 1. Figure 2 and Figure 3 In this embodiment, the flow channel assembly includes rectangular ribs 71, which are distributed at equal intervals, and flow channels 72 are arranged between the rectangular ribs 71. An air inlet 73 is arranged on the left side of the flow channel 72, and there are three air inlets 73. An air outlet 74 is arranged on the right side of the flow channel 72, and there are two air outlets 74. The flow channel 72 is connected to the air inlet 73 and the air outlet 74 respectively. When in use, the extension direction of the rectangular ribs 71 is the flow direction of the gas material. The gas material flows from the air inlet 73 along the flow channel 72 to the air outlet 74, adopting an air intake and exhaust method with three inlets and two outlets. The uniformity of the gas flow is improved, the uneven heat distribution of the battery chemical reaction is improved, and the thermal stress of the battery material is reduced.

[0026] During operation, the sealing material 52 realizes the precise assembly of the battery in the base 1 and the pressure top 5, and connects the anode plate 2, the electrolyte layer 3 and the cathode plate 4 in sequence through the sealing strip 8 to form a self-sealing dense area, thereby ensuring the integrity of the battery seal and improving the sealing of the seal. The fuel cell is provided with fuel or oxidant through the air guide holes 11 opened on both sides, and the internal gas material flows from the air inlet 73 on the anode plate 2 and the cathode plate 4 along the flow channel 72 to the air outlet 74, respectively. A three-inlet and two-outlet air intake and exhaust method is adopted to carry out chemical reactions, thereby improving the uniformity of gas flow and reducing the thermal stress of the battery material. At the same time, the cooling medium enters the liquid inlet 62 through the external hole 53, and is discharged from the liquid outlet 63 through the cooling channel 61, thereby effectively cooling the battery. The cooling channel with a serpentine structure cools evenly and has a good cooling effect, thereby avoiding excessive temperature gradients in the battery, reducing the thermal stress inside the battery, and increasing the battery life to a certain extent.

[0027] Through the above steps, the use of sealing material 52 and sealing strip 8 achieves precise assembly of the base 1 and the top 5 and the integrity and sealing of the internal battery seal, ensuring the stability of the chemical reaction. The addition of the cooling plate 6 better uniformly cools the battery, reduces the thermal stress inside the battery, and increases the battery life, thereby solving the problem of high temperature affecting the sealing of the connector during operation of the existing fuel cell.

Claims

1. A solid oxide fuel cell connector, comprising a base (1), characterized in that: An anode plate (2) is provided at the upper end of the base (1), an electrolyte layer (3) is provided at the upper end of the anode plate (2), a cathode plate (4) is provided at the upper end of the electrolyte layer (3), a pressure top (5) is provided at the upper end of the cathode plate (4), a cooling groove (64) is provided on the surface of the pressure top (5), a cooling plate (6) is fixedly installed at the upper end of the cooling groove (64), a flow channel assembly is provided at the upper end of the anode plate (2), and the same flow channel assembly is provided at the lower end of the cathode plate (4), the front and rear sides of the upper end of the anode plate (2) are fixedly connected to the same sealing strip (8), and the front and rear sides of the lower end of the cathode plate (4) are fixedly connected to the same sealing strip (8).

2. A solid oxide fuel cell interconnect according to claim 1, characterized in that: Air guide holes (11) are provided at both left and right ends of the base (1), and a sealing groove (12) is provided on the inner side of the base (1).

3. The solid oxide fuel cell interconnect according to claim 2, wherein: The lower end of the pressure top (5) is provided with a sealing rib (51), the surface of the sealing rib (51) is covered with a sealing material (52), and the sealing rib (51) is adapted to the sealing groove (12).

4. The solid oxide fuel cell interconnect according to claim 1, wherein: A cooling channel (61) is provided in the cooling plate (6), a liquid inlet (62) is provided at the left end of the cooling plate (6), and liquid outlets (63) are provided at both the front and rear sides of the liquid inlet (62).

5. The solid oxide fuel cell interconnect according to claim 4, characterized in that: The left end of the pressure top (5) is provided with three external connection holes (53), which are connected to the liquid inlet (62) and the liquid outlet (63) respectively.

6. The solid oxide fuel cell interconnect according to claim 1, characterized in that: The flow channel component includes rectangular ribs (71) distributed at equal intervals, and flow channels (72) are arranged between the rectangular ribs (71). An air inlet (73) is arranged on the left side of the flow channel (72), and three air inlets (73) are provided.

7. A solid oxide fuel cell interconnect according to claim 6, characterized in that: An air outlet (74) is provided on the right side of the flow channel (72), and two air outlets (74) are provided. The flow channel (72) is communicated with the air inlet (73) and the air outlet (74) respectively.

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