Fuel cell stack core sintering equipment

Abstract

The utility model relates to fuel cell reactor core sintering equipment which comprises a sintering furnace, and the sintering furnace comprises a base, a plurality of reactor core towers arranged on the base and used for sintering a fuel cell reactor core, a heating cover used for covering the reactor core towers and a heat compensation column arranged on the base. The distances from the reactor core towers to the heat compensation column are the same, the distances from the reactor core towers to the inner side wall of the heating cover are the same, a first electric heating wire is arranged on the inner side wall of the heating cover, and a second electric heating wire is arranged on the outer side wall of the heat compensation column. The sintering furnace has the effects that the sintering furnace can be used for sintering a plurality of fuel cell reactor cores at the same time, and the plurality of fuel cell reactor cores are uniformly heated.

Description

Technical Field

[0001] This application relates to the field of fuel cell technology, and in particular to a fuel cell core sintering apparatus. Background Technology

[0002] A fuel cell is a power generation device that directly converts the chemical energy of fuel and oxidant into electrical energy through an electrochemical reaction. Fuel cell core sintering is a core process in manufacturing, involving high-temperature treatment to densify the materials in each layer of the cell and form a stable structure. Its role extends beyond physical shaping; it directly affects the cell's mechanical strength, electrochemical performance, and long-term stability.

[0003] Currently, when sintering fuel cell stacks, only one fuel cell stack is usually sintered at a time. If multiple fuel cell stacks are sintered simultaneously, the sintering furnace will become larger, which can easily lead to uneven heating of the fuel cell stacks and make it impossible to ensure that the temperature of each fuel cell stack is within an acceptable range during sintering, thus affecting the quality of the product. Utility Model Content

[0004] In order to enable the sintering furnace to sinter multiple fuel cell stacks simultaneously and to ensure that the multiple fuel cell stacks are heated uniformly, this application provides a fuel cell stack sintering device.

[0005] The fuel cell core sintering equipment provided in this application adopts the following technical solution:

[0006] A fuel cell core sintering apparatus includes a sintering furnace. The sintering furnace includes a base, a plurality of core towers arranged on the base for sintering fuel cell cores, a heating shroud for covering the core towers, and a heat-replenishing column disposed on the base. The distance from each core tower to the heat-replenishing column is the same, and the distance from each core tower to the inner wall of the heating shroud is the same. A first heating wire is arranged on the inner wall of the heating shroud, and a second heating wire is arranged on the outer wall of the heat-replenishing column.

[0007] By adopting the above technical solution, multiple core towers are arranged on the base of the sintering furnace, and a heating hood and a heat replenishing column are set up. At the same time, the distance from each core tower to the heat replenishing column is the same, and the distance from each core tower to the inner wall of the heating hood is the same. With the cooperation of the first heating wire on the inner wall of the heating hood and the second heating wire on the outer wall of the heat replenishing column, each core tower is heated evenly, and the temperature during the sintering of different fuel cell cores is kept within an acceptable temperature difference, thereby helping to improve product quality.

[0008] Optionally, the heating cover is provided with a heat insulation layer.

[0009] By adopting the above technical solution and setting an insulation layer in the heating cover, heat loss can be reduced, the temperature inside the sintering furnace can be kept stable, and the fuel cell core can be sintered in a stable temperature environment, thereby improving sintering efficiency and product quality.

[0010] Optionally, the heating cover and the base form a heat-insulating chamber, and a fan is provided on the heating cover. The fan includes a drive motor and blades connected to the output shaft of the drive motor and located inside the heat-insulating chamber.

[0011] By adopting the above technical solution, a fan is installed on the heating cover, and its blades rotate in the heat preservation chamber, which can make the air in the heat preservation chamber flow, which helps to ensure that multiple fuel cell stacks are heated evenly.

[0012] Optionally, the fan is an internal and external circulation fan. When the sintering furnace sinters the fuel cell core, the fan is in internal circulation mode, and when the fuel cell core is cooled after sintering, the fan is in external circulation mode.

[0013] By adopting the above technical solution, the blower is in internal circulation mode during sintering, which can effectively maintain the uniform temperature inside the sintering furnace and ensure that multiple fuel cell stacks are heated evenly; when cooling is completed, the blower switches to external circulation mode, which can accelerate heat dissipation, help achieve rapid cooling, and improve production efficiency.

[0014] Optionally, the fuel cell stack core sintering equipment further includes a testing component for testing the fuel cell stack core. The testing component includes an air duct, a gas duct, an air exhaust duct, a gas exhaust duct, and a preheating box for heating the air duct and the gas duct. The stack core tower includes an air inlet, a gas duct, an air exhaust duct, and a gas exhaust duct. The air duct is connected to the air inlet, the gas duct is connected to the gas duct, the air exhaust duct is connected to the air exhaust duct, and the gas exhaust duct is connected to the gas exhaust duct.

[0015] By adopting the above technical solution, the detection component can be used to detect the fuel cell stack core. Air and gas are transported through air pipes and gas pipes respectively, and air exhaust pipes and gas exhaust pipes receive the exhaust air exhaust and gas exhaust respectively. The preheating box can preheat the air pipes and gas pipes, thereby simulating the gas volume under normal operating conditions. This helps to verify whether the flow channel design is reasonable at high temperatures and helps to check the sintering quality of the fuel cell stack core.

[0016] Optionally, the gas pipeline has a first coil section spiraling upward in the height direction, and the air pipeline has a second coil section spiraling upward in the height direction.

[0017] By adopting the above technical solution, the first coil section of the gas pipeline and the second coil section of the air pipeline are spirally arranged upward along the height direction, which increases the flow path of gas and air in the pipeline and increases the heating time of gas and air in the insulation chamber. This increases the temperature of gas and air when they enter the core tower so that it is basically consistent with the temperature in the insulation chamber, which helps to simulate the working temperature under normal operating conditions and improve the accuracy of the test results.

[0018] Optionally, the first coil section is wound around each of the core towers, and the second coil section is wound around the first coil section.

[0019] By adopting the above technical solution, the first coil section is wound around each core tower, and the second coil section is wound around the first coil section, which helps to improve the space utilization rate inside the sintering furnace.

[0020] Optionally, the air duct, gas duct, air exhaust duct, and gas exhaust duct are all equipped with pressure gauges for detecting the gas pressure inside the duct.

[0021] By adopting the above technical solutions, the gas pressure in the air pipeline, gas pipeline, air exhaust pipeline, and gas exhaust pipeline can be monitored in real time. This helps to detect abnormal gas pressure in the pipeline in a timely manner, ensuring the normal operation of the core testing work by the testing components and the safety and stability of the entire sintering equipment.

[0022] Optionally, the air exhaust pipe includes an air exhaust branch pipe connected to the reactor core tower and an air exhaust main pipe that merges the air exhaust branch pipes, and the gas exhaust pipe includes a gas exhaust branch pipe connected to the reactor core tower and a gas exhaust main pipe that merges the gas exhaust branch pipes.

[0023] By adopting the above technical solution, the air exhaust gas and fuel gas exhaust gas discharged from each core tower can be collected and combined separately, which facilitates the subsequent centralized treatment of exhaust gas and improves exhaust gas treatment efficiency.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. A fuel cell stack core sintering device, which is equipped with a sintering furnace, the sintering furnace including a base, several stack core towers, a heating hood and a heat supplement column, so that the sintering furnace can sinter multiple fuel cell stack cores at the same time, and make the multiple fuel cell stack cores uniformly heated, and ensure that the temperature of different fuel cell stack cores during sintering is within an acceptable temperature difference, which helps to improve product quality.

[0026] 2. By installing a fan on the heating hood, and the fan having both internal and external circulation modes, the temperature inside the sintering furnace can be effectively maintained during heating, ensuring uniform heating of multiple fuel cell stacks, and rapid cooling can be achieved during cooling.

[0027] 3. By setting up detection components, it is possible to simulate the gas volume under normal operating conditions, which helps to verify whether the flow channel design is reasonable at high temperatures and to check the sintering quality of the fuel cell core. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the fuel cell core sintering equipment in the embodiments of this application.

[0029] Figure 2 This is a cross-sectional view of the fuel cell core sintering equipment in an embodiment of this application.

[0030] Figure 3 This is a cross-sectional schematic diagram of the fan in an embodiment of this application.

[0031] Figure 4 yes Figure 2 A magnified view of a portion of point A in the middle.

[0032] Figure 5 This is a cross-sectional schematic diagram of the air exhaust pipe and the gas exhaust pipe in the embodiments of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Sintering furnace; 11. Base; 12. Core tower; 121. Air inlet; 122. Gas inlet; 123. Air exhaust inlet; 124. Gas exhaust inlet; 13. Heating hood; 131. First heating wire; 132. Insulation layer; 133. Fan; 1331. Drive motor; 1332. Blade; 14. Heating column; 141. Second heating wire; 15. Detection assembly; 151. Air pipe 1511, Second coil section; 152, Gas pipeline; 1521, First coil section; 153, Air exhaust pipeline; 1531, Air exhaust branch pipe; 1532, Air exhaust main pipe; 154, Gas exhaust pipeline; 1541, Gas exhaust branch pipe; 1542, Gas exhaust main pipe; 155, Preheating box; 156, Pressure gauge; 16, Insulated chamber; 2, Lifting assembly; 21, Linear module; 22, Electric cylinder. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] This application discloses a fuel cell core sintering apparatus. (Refer to...) Figure 1 and Figure 2The fuel cell stack core sintering equipment includes a sintering furnace 1 and a lifting assembly 2. The sintering furnace 1 includes a base 11, four stack towers 12 evenly spaced circumferentially arranged on the base 11, a heating hood 13 for covering the stack towers 12 and the base 11, a heat supplement column 14 coaxial with the base 11 and arranged on the base 11, and a detection assembly 15 for detecting the fuel cell stack core. The stack towers 12 are used to sinter the fuel cell stack core, and the above arrangement ensures that the distance from each stack tower 12 to the heat supplement column 14 is the same, and the distance from each stack tower 12 to the inner wall of the heating hood 13 is the same.

[0036] Reference Figure 1 and Figure 2 The lifting assembly 2 includes linear modules 21 arranged opposite each other on both sides of the heating shroud 13 and four electric cylinders 22 mounted on the heating shroud 13. Before sintering the fuel cell stack, the lifting assembly 2 lifts the heating shroud 13 to install the fuel cell stack onto the stack tower 12, and then lowers the heating shroud 13 to the base 11. After the fuel cell stack has been sintered and inspected, the lifting assembly 2 lifts the heating shroud 13 to remove the sintered fuel cell stack.

[0037] Reference Figure 2 A first heating wire 131 is arranged on the inner wall of the heating cover 13, and a second heating wire 141 is arranged on the outer wall of the heating column 14. The heating cover 13 and the base 11 form a heat-insulating chamber 16. The heating cover 13 is provided with a heat-insulating layer 132. In this embodiment, the heat-insulating layer 132 is made of zirconium-containing aluminum silicate ceramic fiber board, which can effectively reduce heat loss and maintain the temperature of the heat-insulating chamber 16 stable.

[0038] Reference Figure 3 A fan 133 is installed on the heating shroud 13. The fan 133 includes a drive motor 1331 and blades 1332 connected to the output shaft of the drive motor 1331 and located inside the insulation chamber 16. In this embodiment, the fan 133 is an internal and external circulation fan. When the fuel cell core is sintered, the fan 133 operates in internal circulation mode, which helps to ensure uniform heating within the insulation chamber 16. When the fuel cell core needs cooling after sintering, the fan 133 operates in external circulation mode, which helps to cool down quickly.

[0039] Reference Figure 2 and Figure 4The reactor core tower 12 includes an air inlet 121, a gas inlet 122, an air exhaust inlet 123, and a gas exhaust inlet 124. The detection assembly 15 includes an air pipe 151, a gas pipe 152, an air exhaust inlet 153, a gas exhaust inlet 154, and a preheating box 155 for heating the air pipe 151 and the gas pipe 152. The air pipe 151 is flanged to the air inlet 121, the gas pipe 152 is flanged to the gas inlet 122, the air exhaust inlet 153 is flanged to the air exhaust inlet 123, and the gas exhaust inlet 154 is flanged to the gas exhaust inlet 124. Furthermore, each of the air pipe 151, gas pipe 152, air exhaust inlet 153, and gas exhaust inlet 154 is equipped with a pressure gauge 156 for detecting the gas pressure within the pipe.

[0040] refer to Figure 4 The gas pipeline 152 has a first coil section 1521 spiraling upwards along the height direction, and the first coil section 1521 is arranged around each core tower 12. The air pipeline 151 has a second coil section 1511 spiraling upwards along the height direction, and the second coil section 1511 is coaxially arranged around the outside of the first coil section 1521. The air and gas in the air pipeline 151 and the gas pipeline 152 are initially heated when passing through the preheating box 155, and then enter the insulation chamber 16. The temperature inside the insulation chamber 16 is higher than the temperature of the preheating box 155, which can perform secondary heating on the air and gas. The arrangement of the first coil section 1521 and the second coil section 1511 increases the heating time of the air and gas in the insulation chamber 16, which helps to increase the temperature of the gas and air when entering the core tower 12 so that it is basically consistent with the temperature inside the insulation chamber 16, thereby helping to simulate the working temperature under normal operating conditions and improving the accuracy of the test results.

[0041] Reference Figure 5 The air exhaust pipe 153 includes an air exhaust branch pipe 1531 connected to the core tower 12 and an air exhaust main pipe 1532 that merges the air exhaust branch pipes 1531, and the diameter of the air exhaust main pipe 1532 is larger than the diameter of the air exhaust branch pipes 1531. The fuel gas exhaust pipe 154 includes a fuel gas exhaust branch pipe 1541 connected to the core tower 12 and a fuel gas exhaust main pipe 1542 that merges the fuel gas exhaust branch pipes 1541, and the diameter of the fuel gas exhaust main pipe 1542 is larger than the diameter of the fuel gas exhaust branch pipes 1541. The arrangement of the air exhaust main pipe 1532 and the fuel gas exhaust main pipe 1542 facilitates subsequent centralized treatment of exhaust gas.

[0042] The implementation principle of a fuel cell core sintering device according to an embodiment of this application is as follows: multiple core towers 12 are arranged on the base 11 of the sintering furnace 1, and a heating shroud 13 and a supplementary heating column 14 are provided. At the same time, the distance from each core tower 12 to the supplementary heating column 14 is the same, and the distance from each core tower 12 to the inner wall of the heating shroud 13 is the same. With the cooperation of the first heating wire 131 on the inner wall of the heating shroud 13 and the second heating wire 141 on the outer wall of the supplementary heating column 14, not only is the overall heating of each core tower 12 uniform, but the temperature of the multiple core towers 12 sintered at the same time is also within an acceptable deviation, thereby helping to improve product quality.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fuel cell core sintering apparatus, comprising a sintering furnace (1), characterized in that, The sintering furnace (1) includes a base (11), a plurality of core towers (12) arranged on the base (11) for sintering fuel cell cores, a heating hood (13) for covering the core towers (12), and a heat replenishing column (14) arranged on the base (11). The distance from each core tower (12) to the heat replenishing column (14) is the same, and the distance from each core tower (12) to the inner wall of the heating hood (13) is the same. A first heating wire (131) is arranged on the inner wall of the heating hood (13), and a second heating wire (141) is arranged on the outer wall of the heat replenishing column (14).

2. The fuel cell core sintering equipment according to claim 1, characterized in that, The heating cover (13) is provided with a heat insulation layer (132).

3. The fuel cell core sintering equipment according to claim 1, characterized in that, The heating cover (13) and the base (11) form a heat-insulating chamber (16). A fan (133) is provided on the heating cover (13). The fan (133) includes a drive motor (1331) and blades (1332) connected to the output shaft of the drive motor (1331) and located in the heat-insulating chamber (16).

4. The fuel cell core sintering equipment according to claim 3, characterized in that, The blower (133) is an internal and external circulation blower. When the sintering furnace (1) sinters the fuel cell core, the blower (133) is in internal circulation mode. When the fuel cell core is cooled after sintering, the blower (133) is in external circulation mode.

5. The fuel cell core sintering equipment according to claim 1, characterized in that, It also includes a detection assembly (15) for detecting the fuel cell stack core, the detection assembly (15) including an air duct (151), a gas duct (152), an air exhaust duct (153), a gas exhaust duct (154), and a preheating box (155) for heating the air duct (151) and the gas duct (152); the stack core tower (12) includes an air port (121), a gas port (122), an air exhaust duct (123), and a gas exhaust duct (124); the air duct (151) is connected to the air port (121), the gas duct (152) is connected to the gas port (122), the air exhaust duct (153) is connected to the air exhaust duct (123), and the gas exhaust duct (154) is connected to the gas exhaust duct (124).

6. The fuel cell core sintering equipment according to claim 5, characterized in that, The gas pipeline (152) has a first coil section (1521) spiraling upward in the height direction, and the air pipeline (151) has a second coil section (1511) spiraling upward in the height direction.

7. The fuel cell core sintering equipment according to claim 6, characterized in that, The first coil section (1521) is wound around each of the core towers (12), and the second coil section (1511) is wound around the first coil section (1521).

8. The fuel cell core sintering equipment according to claim 5, characterized in that, The air duct (151), gas duct (152), air exhaust duct (153) and gas exhaust duct (154) are all equipped with pressure gauges (156) for detecting the gas pressure inside the duct.

9. A fuel cell core sintering apparatus according to claim 5, characterized in that, The air exhaust pipe (153) includes an air exhaust branch pipe (1531) connected to the core tower (12) and an air exhaust main pipe (1532) that merges the air exhaust branch pipes (1531). The gas exhaust pipe (154) includes a gas exhaust branch pipe (1541) connected to the core tower (12) and a gas exhaust main pipe (1542) that merges the gas exhaust branch pipes (1541).

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