Simulated load testing device for hydrogen fuel cell stack

Abstract

The utility model discloses a hydrogen fuel cell stack simulation load testing device, which comprises a device body, the device body comprises a main box body, a maintenance top cover, a group of supporting legs, a plurality of groups of heat conduction devices and an insulating plate, the maintenance top cover is arranged at the top of the main box body, the group of supporting legs are symmetrically arranged at the bottom of the main box body, and the insulating plate is arranged in the main box body. The multiple heat conduction devices are transversely distributed at equal intervals, and the insulating plate is installed on the top of one heat conduction device. The heat conduction device is of a concave structure and comprises a heat conduction plate and stabilizing feet, the stabilizing feet are of a rectangular structure, the stabilizing feet are installed at the top and the bottom of the outer side of the heat conduction plate, the surfaces of the stabilizing feet are provided with a plurality of sets of fixing holes which are transversely distributed at equal intervals, and the heat conduction plate is made of copper. According to the device, through the arrangement of the layered three-dimensional resistance box structure, the heat conduction cooling fins and the cooling fan, the heat dissipation capability of the resistance box is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of testing technology for hydrogen fuel cell stacks, specifically to a hydrogen fuel cell stack simulated load testing device. Background Technology

[0002] Currently, in the field of hydrogen fuel cell stack testing, commonly used simulated load testing devices mainly include resistance box-based load devices, power semiconductor device-based electronic load devices, and energy storage load devices based on supercapacitors or batteries.

[0003] Existing resistance boxes have the following drawbacks:

[0004] Existing resistance boxes typically consist of multiple resistors arranged together, resulting in a large overall size and making layout difficult within limited test spaces. Moreover, resistors generate a significant amount of heat during operation, and due to inadequate heat dissipation design, this heat is difficult to dissipate quickly, causing a sharp rise in the temperature of the resistance box and its surrounding environment. This not only affects the stability of the resistor's own resistance value, leading to deviations in load accuracy during testing, but may also adversely affect surrounding fuel cells and other test equipment, such as altering the operating temperature environment of the fuel cell and consequently affecting the accurate testing of fuel cell performance parameters.

[0005] Therefore, a solution is needed. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a hydrogen fuel cell stack simulated load testing device to solve the problems mentioned in the background section.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen fuel cell stack simulated load testing device, comprising a device body, the device body including a main housing, a maintenance top cover, support feet, a heat conduction device, and an insulating plate. The maintenance top cover is installed on the top of the main housing. A set of support feet is provided, symmetrically installed at the bottom of the main housing. Several sets of heat conduction devices are provided, distributed horizontally at equal intervals. The insulating plate is installed on top of one set of heat conduction devices. The heat conduction device has a U-shaped structure, including a heat conduction plate and stabilizing feet. The stabilizing feet have a rectangular structure, a set of which is installed on the top and bottom outer sides of the heat conduction plate. Several sets of horizontally equidistant fixing holes are provided on the surface of the stabilizing feet. The heat-conducting plate is made of copper and has a rectangular structure. Several sets of horizontally equidistant heat-conducting channels are formed on the surface of the heat-conducting plate. Several sets of row-shaped equidistant heat dissipation holes are formed on the surface of the heat-conducting channels. The insulating plate has a rectangular structure, and several sets of horizontally equidistant flow holes are formed on the top of the insulating plate. Several sets of fixing holes are formed on both the left and right sides of the top of the insulating plate. The bottom of the main housing has two sets of symmetrically distributed mounting covers. The mounting covers have a cylindrical structure with through-type structures at both the top and bottom. An intake fan is installed inside the mounting cover, and a filter is installed at the bottom of the mounting cover. The maintenance top cover has two sets of symmetrically distributed heat exhaust ports, and an exhaust fan is installed inside each heat exhaust port.

[0010] Preferably, the maintenance cover has several sets of fixing holes distributed horizontally at equal intervals on both the left and right sides of the top, and the maintenance cover has an embedding block at the bottom.

[0011] Preferably, the support foot includes a support block, an upper connecting block, and a lower stabilizing block. The support block, upper connecting block, and lower stabilizing block are all rectangular in shape and are smoothly transitioned and integrally formed. The upper connecting block is located at the top inner side of the support block, and the lower stabilizing block is located at the bottom outer side of the support block. The surfaces of the upper connecting block and the lower stabilizing block are provided with several sets of fixing holes distributed in a horizontally equidistant manner.

[0012] Preferably, the main housing has a display screen and several sets of control knobs on the front side, and several sets of fixing holes are provided on the left and right sides of the bottom of the main housing in a horizontally equidistant manner. The main housing has a set of load-bearing blocks distributed symmetrically on the top, the load-bearing blocks have a rectangular structure, and the top of the load-bearing blocks has several sets of fixing holes distributed horizontally equidistantly.

[0013] (III) Beneficial Effects

[0014] This invention provides a hydrogen fuel cell stack simulated load testing device. It has the following beneficial effects:

[0015] In this design, the hydrogen fuel cell stack simulated load testing device significantly improves the heat dissipation capacity of the resistance box through a layered, three-dimensional resistance box structure, heat dissipation fins, and a cooling fan. Under the same load power, the temperature of the resistance box is lower than that of traditional devices, and the temperature fluctuation range is reduced, ensuring the stability of the resistance value and thus improving the accuracy of the load test. The layered, three-dimensional structure allows for a more compact layout of the resistive elements. Compared to traditional centralized resistance boxes, the device's size is reduced, saving testing space and facilitating installation and use in various testing environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure at point A of this utility model.

[0019] In the diagram, 1. Device body; 2. Main housing; 3. Maintenance top cover; 4. Support feet; 5. Heat conduction device; 6. Insulation plate; 7. Heat conduction plate; 8. Stabilizing foot; 9. Fixing hole; 10. Heat conduction channel; 11. Heat dissipation hole; 12. Flow hole; 13. Mounting cover; 14. Filter screen; 15. Intake fan; 16. Exhaust port; 17. Exhaust fan; 18. Embedded block; 19. Support block; 20. Upper connecting block; 21. Lower stabilizing block; 22. Display screen; 23. Control knob; 24. Load-bearing block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution:

[0022] Example

[0023] To address the aforementioned problems: existing resistance boxes typically consist of multiple resistors arranged together, resulting in a bulky overall size and making layout difficult within limited test spaces. Furthermore, resistors generate a significant amount of heat during operation, and due to inadequate heat dissipation design, this heat is difficult to dissipate quickly, causing a sharp rise in the temperature of the resistance box and its surrounding environment. This not only affects the stability of the resistor's own resistance value, leading to deviations in load accuracy during testing, but may also adversely affect surrounding fuel cells and other test equipment, such as altering the operating temperature environment of the fuel cell, thereby impacting the accurate testing of fuel cell performance parameters.

[0024] The solution is as follows: A hydrogen fuel cell stack simulated load testing device, including a device body 1. The device body 1 includes a main housing 2, a maintenance top cover 3, support feet 4, heat conduction devices 5, and an insulating plate 6. The maintenance top cover 3 is installed on the top of the main housing 2. A set of support feet 4 is provided, and a set of support feet 4 is symmetrically installed at the bottom of the main housing 2. Several sets of heat conduction devices 5 are provided, and several sets of heat conduction devices 5 are distributed laterally at equal intervals. The insulating plate 6 is installed on top of a set of heat conduction devices 5. The heat conduction devices 5 have a U-shaped structure and include a heat conduction plate 7 and stabilizing feet 8. The stabilizing feet 8 have a rectangular structure and a set of stabilizing feet 8 is provided. Mounted on the top and bottom outer sides of the heat-conducting plate 7, the stabilizing feet 8 have several sets of horizontally equidistant fixing holes 9 on their surface. The heat-conducting plate 7 is made of copper and has a rectangular structure. Several sets of horizontally equidistant heat-conducting channels 10 are formed on the surface of the heat-conducting plate 7. The heat-conducting channels 10 are rectangular in shape, and several sets of row-shaped equidistant heat dissipation holes 11 are formed on their surface. The insulating plate 6 has a rectangular structure, and several sets of horizontally equidistant flow holes 12 are formed on its top. The flow holes 12 are rectangular in shape, and several sets of fixing holes 9 are formed on both the left and right sides of the top of the insulating plate 6. The bottom of the main housing 2 is provided with... There are two sets of symmetrically distributed mounting covers 13. Each mounting cover 13 has a cylindrical structure with through-type structures at both ends. An intake fan 15 is installed inside each mounting cover 13, and a filter screen 14 is installed at the bottom of each mounting cover 13. The maintenance top cover 3 has two sets of symmetrically distributed heat dissipation ports 16 at its top. An exhaust fan 17 is installed inside each heat dissipation port 16. In use, resistive elements can be mounted on insulating plates 6. Several sets of insulating plates 6 and heat-conducting devices 5 are provided, allowing them to be stacked to form a layered structure. In use, the insulating plate 6 can be mounted on one set of heat-conducting devices 5, while another set of heat-conducting devices 5 can be fixed to the lower insulating plate 6 with screws. When the device 5 is fixed on the insulating plate 6, the heat conduction channel 10 of the heat conduction plate 7 can be aligned with the flow hole 12 of the insulating plate 6 to facilitate flow and heat dissipation. During heat dissipation, two sets of intake fans 15 draw external air into the main housing 2. First, the dust in the air is filtered by the filter screen 14 to improve the cleanliness of the air. Then, the air passes through the flow hole 12 and multiple sets of insulating plates 6, thereby achieving the purpose of removing heat from the insulating plates 6. Then, two sets of exhaust fans 17 are started, and the exhaust fans 17 can draw out the hot air in the main housing 2 to achieve the purpose of heat dissipation. The heat conduction plate 7 of the heat conduction device 5 can absorb heat. When the air flows through the heat conduction channel 10, it can also remove heat to achieve the purpose of heat dissipation.

[0025] The maintenance top cover 3 has several sets of fixing holes 9 arranged in a horizontally equidistant manner on both the left and right sides of the top. The maintenance top cover 3 has an embedding block 18 at the bottom. The embedding block 18 is for embedding into the opening between a set of load-bearing blocks 24, so as to achieve the installation of the main box 2 and the maintenance top cover 3.

[0026] The support foot 4 includes a support block 19, an upper connecting block 20, and a lower stabilizing block 21. The support block 19, the upper connecting block 20, and the lower stabilizing block 21 are all rectangular in shape and are smoothly transitioned and integrally formed. The upper connecting block 20 is located at the top inner side of the support block 19, and the lower stabilizing block 21 is located at the bottom outer side of the support block 19. The surfaces of the upper connecting block 20 and the lower stabilizing block 21 are provided with several sets of fixing holes 9 distributed horizontally at equal intervals. The support foot 4 is used to support and raise the main housing 2, so that gas can enter from the bottom of the main housing 2.

[0027] The main housing 2 has a display screen 22 and several sets of control knobs 23 on the front side. The bottom left and right sides of the main housing 2 have several sets of fixing holes 9 distributed horizontally at equal intervals. The top of the main housing 2 has a set of symmetrically distributed load-bearing blocks 24. The load-bearing blocks 24 have a rectangular structure. The top of the load-bearing blocks 24 has several sets of horizontally equidistant fixing holes 9. The load-bearing blocks 24 on the top of the main housing 2 are for easy maintenance of the top cover 3, which is then inserted into the fixing holes 9 and locked.

[0028] Working principle: During operation, the insulating plate 6 can be installed on one set of heat-conducting devices 5, and the other set of heat-conducting devices 5 can be fixed to the lower insulating plate 6 with screws. When the heat-conducting devices 5 are fixed to the insulating plate 6, the heat-conducting channels 10 of the heat-conducting plate 7 can be aligned with the flow holes 12 of the insulating plate 6 to facilitate flow and heat dissipation. During heat dissipation, two sets of intake fans 15 draw outside air into the main housing 2. First, the dust in the air is filtered by the filter screen 14 to improve the cleanliness of the air. Then, the air passes through the flow holes 12 and multiple sets of insulating plates 6, thereby achieving the purpose of removing heat from the insulating plates 6. Then, two sets of exhaust fans 17 are started, and the exhaust fans 17 can draw out the hot air in the main housing 2 to achieve the purpose of heat dissipation.

[0029] The components of this utility model are: 1. Device body; 2. Main housing; 3. Maintenance top cover; 4. Support foot; 5. Heat conduction device; 6. Insulation plate; 7. Heat conduction plate; 8. Stabilizing foot; 9. Fixing hole; 10. Heat conduction channel; 11. Heat dissipation hole; 12. Flow hole; 13. Mounting cover; 14. Filter screen; 15. Intake fan; 16. Exhaust port; 17. Exhaust fan; 18. Embedded block; 19. Support block; 20. Upper connecting block; 21. Lower stabilizing block; 22. Display screen; 23. Control knob; 24. Load-bearing block. All components are general standard parts or parts known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is... Existing resistance boxes typically consist of multiple resistors arranged together, resulting in a bulky overall size and making layout difficult within limited test space. Furthermore, resistors generate significant heat during operation, and due to inadequate heat dissipation design, this heat is difficult to dissipate quickly, causing a sharp rise in the temperature of the resistance box and its surrounding environment. This not only affects the stability of the resistor's resistance value, leading to deviations in load accuracy during testing, but may also adversely affect surrounding fuel cells and other test equipment, such as altering the fuel cell's operating temperature environment and thus affecting the accurate testing of fuel cell performance parameters. This invention, through the combination of the aforementioned components and the arrangement of a layered, three-dimensional resistance box structure, heat-conducting fins, and a cooling fan, significantly improves the heat dissipation capacity of the resistance box.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydrogen fuel cell stack simulated load testing device, characterized in that: The device includes a main body (1), which includes a main housing (2), a maintenance top cover (3), support feet (4), a heat conduction device (5), and an insulating plate (6). The maintenance top cover (3) is installed on the top of the main housing (2). There is a set of support feet (4), which are symmetrically installed at the bottom of the main housing (2). There are several sets of heat conduction devices (5), which are distributed horizontally at equal intervals. The insulating plate (6) is installed on the top of a set of heat conduction devices (5). The heat-conducting device (5) has a U-shaped structure. The heat-conducting device (5) includes a heat-conducting plate (7) and a stabilizing foot (8). The stabilizing foot (8) has a rectangular structure. A set of the stabilizing foot (8) is installed on the top and bottom of the outer side of the heat-conducting plate (7). The surface of the stabilizing foot (8) has several sets of fixing holes (9) distributed horizontally at equal intervals. The heat-conducting plate (7) is made of copper. The heat-conducting plate (7) has a rectangular structure. The surface of the heat-conducting plate (7) has several sets of heat-conducting channels (10) distributed horizontally at equal intervals. The heat-conducting channels (10) have a rectangular structure. The surface of the heat-conducting channels (10) has several sets of heat dissipation holes (11) distributed in a row at equal intervals. The insulating plate (6) has a rectangular structure. The top of the insulating plate (6) is provided with several sets of flow holes (12) distributed in a horizontally equidistant manner. The flow holes (12) have a rectangular structure. Several sets of fixing holes (9) are provided on the left and right sides of the top of the insulating plate (6). The bottom of the main housing (2) is provided with two sets of mounting covers (13) arranged symmetrically. The mounting covers (13) are cylindrical in shape and have a through structure at both ends. An air intake fan (15) is installed inside the mounting cover (13), and a filter screen (14) is installed at the bottom of the mounting cover (13). The maintenance cover (3) has two sets of symmetrically distributed heat exhaust ports (16) on its top, and an exhaust fan (17) is installed in the heat exhaust port (16).

2. The hydrogen fuel cell stack simulated load testing device according to claim 1, characterized in that: The maintenance cover (3) has several sets of fixing holes (9) arranged in a horizontally equidistant manner on both the left and right sides of the top, and the maintenance cover (3) has an embedding block (18) at the bottom.

3. The hydrogen fuel cell stack simulated load testing device according to claim 1, characterized in that: The support foot (4) includes a support block (19), an upper connecting block (20), and a lower stabilizing block (21). The support block (19), the upper connecting block (20), and the lower stabilizing block (21) are all rectangular in shape and are integrally formed with a smooth transition. The upper connecting block (20) is located at the top inside the support block (19), and the lower stabilizing block (21) is located at the bottom outside the support block (19). The surfaces of the upper connecting block (20) and the lower stabilizing block (21) are provided with several sets of fixing holes (9) distributed in a horizontally equidistant manner.

4. The hydrogen fuel cell stack simulated load testing device according to claim 1, characterized in that: The main housing (2) has a display screen (22) and several control knobs (23) on the front side. Several sets of fixing holes (9) are provided on the left and right sides of the bottom of the main housing (2). A set of load-bearing blocks (24) are provided on the top of the main housing (2) in a symmetrical manner. The load-bearing blocks (24) have a rectangular structure. Several sets of fixing holes (9) are provided on the top of the load-bearing blocks (24) in a horizontally equidistant manner.

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