A hydrogen fuel cell heat sink

Abstract

The utility model provides a kind of hydrogen fuel cell heat dissipation device, it is related to hydrogen fuel cell heat dissipation technical field, including battery body, heat dissipation component and water flow isolation component;Heat dissipation component includes the limit card that is fixedly connected in the both ends of battery body outside, the far end of two limit card is fixedly connected refrigeration heat sink, limit card inside is fixedly connected with refrigeration water pipe, the both ends of refrigeration water pipe outside are all screw thread connection adapter delivery pipe, the both ends of refrigeration water pipe outside are all equipped with pressure spring, adapter delivery pipe outside is fixedly connected with steering handle, the both ends of refrigeration water pipe outside are all fixedly connected with first limit ring;Such design is by using modularization pipeline design, realize local quick disassembly, without disassembling entire pipeline system, significantly save maintenance time and cost, and when disassembling cooling pipeline, by closing the water flow isolation component near cooling pipeline, effectively avoid the waste of coolant, reduce subsequent replenishment and processing work simultaneously, reduce use cost.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen fuel cell heat dissipation technology, and in particular to a hydrogen fuel cell heat dissipation device. Background Technology

[0002] The hydrogen fuel cell stack is the core component of a hydrogen fuel cell. It converts hydrogen and oxygen into electrical energy through an electrochemical reaction to power vehicles or other equipment.

[0003] A search of Chinese Patent Publication No. CN213936261U reveals a heat sink for a hydrogen fuel cell stack. The heat sink includes a battery holder on its top surface and a cooling unit fitted onto the top surface of the battery holder. This heat sink utilizes multiple battery slots on the top surface of the battery holder, and multiple ventilation holes extending from the top surface of the battery slots to the ground, allowing air circulation to the bottom of the battery to achieve heat dissipation. Water-cooled pipes are wound between the bottom surfaces of the battery slots, and the two ends of the water-cooled pipes are connected to a cooling pump installed inside the cooling unit, achieving a circulating water-cooled cooling effect. The battery holder and the cooling unit are joined by a snap-fit ​​connection. The inlet and outlet pipes at both ends of the cooling pump provide circulating cooling for the water-cooled pipes.

[0004] However, in actual use, the chemicals, impurities and electrochemical reactions in the coolant may cause corrosion of the pipe materials. In particular, when the conductivity of the coolant is high, the corrosion will be more severe. Currently, when the coolant pipe is corroded and damaged, it is usually necessary to disassemble the entire pipe system for repair or replacement. This is not only time-consuming and labor-intensive, but may also increase the downtime of the system and affect the overall operating efficiency.

[0005] Therefore, this utility model provides a heat dissipation device for hydrogen fuel cells. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies and provide a heat dissipation device for hydrogen fuel cells.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a hydrogen fuel cell heat dissipation device, comprising a battery body, a heat dissipation component, and a water flow isolation component;

[0008] The heat dissipation assembly includes limiting plates fixedly connected to both ends of the outer side of the battery body. The far ends of the two limiting plates are fixedly connected to a cooling heat dissipation unit. Cooling water pipes are fixedly connected inside the limiting plates. Both ends of the cooling water pipes are threadedly connected to transfer pipes.

[0009] In a preferred embodiment, pressure springs are fitted at both ends of the outer side of the chilled water pipe, a handle is fixedly connected to the outer side of the transfer conveying pipe, and a first limiting ring is fixedly connected to both ends of the outer side of the chilled water pipe.

[0010] In a preferred embodiment, the water flow isolation assembly includes a bent conveying pipe rotatably connected to the outside of the transfer conveying pipe, a water-stop ring rotatably connected inside the bent conveying pipe, a threaded post fixedly connected to the top of the water-stop ring, and a receiving ring fixedly connected inside the bent conveying pipe.

[0011] In a preferred embodiment, a rotating torsion block is fixedly connected to the top of the threaded column, and a sealing ring is fixedly provided at the bottom of the rotating torsion block. The outer side of the sealing ring and the top of the receiving ring form an insertion fit structure, and the adjusting cap controls the axial compression of the sealing ring through a threaded connection.

[0012] In a preferred embodiment, one end of the pressure spring is rotatably connected to the first limiting ring, and the other end of the pressure spring is rotatably connected to the second limiting ring. The pressure spring generates an axial preload when the throttle is rotated.

[0013] In a preferred embodiment, the inner wall of the receiving ring is provided with a tapered guide surface that matches the sealing ring, the outer edge of the rotating torsion block is provided with an anti-slip protrusion structure, and the sealing ring is made of high-temperature resistant silicone rubber material.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] This invention utilizes a rotating handle to drive the transfer pipe to move axially relative to the refrigerant water pipe, thereby compressing the pressure spring. The spring preload then tightly locks the threaded connection. When the rotating block is rotated, the sealing ring moves downwards along the conical guide surface, causing the water-stop ring to radially press against the inner wall of the bent transfer pipe. The deformation of the sealing ring is controlled by the adjusting cap, achieving a seal that isolates the coolant flow path. This facilitates the disassembly of individual pipes. When the refrigeration unit is running, the refrigerant is transferred through the refrigerant water pipe to the inner wall of the limiting plate to absorb heat. The cooling circuit is then expanded through the linkage of the transfer pipe and the bent transfer pipe, achieving cooling and temperature reduction. This modular pipe design allows for quick partial disassembly and assembly without disassembling the entire piping system, significantly saving maintenance time and costs. Furthermore, when disassembling the cooling pipes, closing the water flow isolation components near the cooling pipes effectively prevents coolant waste, reduces subsequent replenishment and processing work, and lowers operating costs. Attached Figure Description

[0016] Figure 1 A perspective view of a hydrogen fuel cell heat dissipation device provided by this utility model;

[0017] Figure 2A schematic diagram of a heat dissipation component structure for a hydrogen fuel cell heat dissipation device provided by this utility model;

[0018] Figure 3 for Figure 1 Enlarged view of point A in the image;

[0019] Figure 4 A schematic diagram of a limiting plate structure for a hydrogen fuel cell heat dissipation device provided by this utility model;

[0020] Figure 5 A schematic diagram of the water flow isolation component structure of a hydrogen fuel cell heat dissipation device provided by this utility model.

[0021] Legend:

[0022] 1. Battery body;

[0023] 2. Heat dissipation components; 21. Limiting plate; 22. Refrigeration unit; 23. Refrigeration water pipe; 24. Pressure spring; 25. Adapter conveying pipe; 26. Throttle; 27. First limiting ring; 28. Second limiting ring;

[0024] 3. Water flow isolation assembly; 31. Bending conveying pipe; 32. Receiving ring; 33. Threaded post; 34. Water stop ring; 35. Adjusting cap; 36. Rotating torsion block; 37. Sealing ring. Detailed Implementation

[0025] 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.

[0026] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a hydrogen fuel cell heat dissipation device, including a battery body 1, a heat dissipation component 2 and a water flow isolation component 3;

[0027] The heat dissipation assembly 2 includes limiting plates 21 fixedly connected to both ends of the outer side of the battery body 1. The far ends of the two limiting plates 21 are fixedly connected to the cooling heat dissipation unit 22. The limiting plates 21 are fixedly connected to the inside of the limiting plates 21. The outer ends of the cooling water pipes 23 are threadedly connected to the transfer conveying pipes 25. The outer ends of the cooling water pipes 23 are fitted with pressure springs 24. The outer side of the transfer conveying pipes 25 is fixedly connected to the handle 26. The outer ends of the cooling water pipes 23 are fixedly connected to the first limiting rings 27. One end of the pressure spring 24 is rotatably connected to the first limiting ring 27, and the other end of the pressure spring 24 is rotatably connected to the second limiting ring 28. The pressure spring 24 generates axial preload when the handle 26 is rotated.

[0028] Limiting plates 21 are fixedly connected to both ends of the outer side of the battery body 1, used to securely install the entire heat dissipation assembly 2 onto the battery body 1, serving as support and limiting, ensuring that the heat dissipation assembly 2 will not shift or loosen during operation. A cooling heat dissipation unit 22 is fixedly connected to the far ends of the two limiting plates 21, used to generate refrigerant or coolant, which is transferred to the surrounding area of ​​the battery body 1 through the cooling water pipe 23 to achieve heat dissipation. The cooling water pipe 23 is fixedly connected inside the limiting plates 21, used to transport refrigerant or coolant, and serves as the heat transfer channel between the cooling heat dissipation unit 22 and the battery body 1. A transfer pipe 25 is threaded to both ends of the outer side of the cooling water pipe 23, used to connect the cooling water pipe 23 to other external pipes or equipment, realizing the input and output of refrigerant or coolant, and pressure. Spring 24 is sleeved on both ends of the outer side of the chilled water pipe 23, and the two ends are respectively connected to the first limiting ring 27 and the second limiting ring 28. When the handle 26 is rotated, the pressure spring 24 will generate axial preload to ensure the tightness of the connection between the transfer pipe 25 and the chilled water pipe 23. The handle 26 is fixedly connected to the outer side of the transfer pipe 25 and is used to manually or mechanically rotate the transfer pipe 25 to adjust the preload of the pressure spring 24. It can also be installed and disassembled when needed, so that the chilled water pipe 23 can be disassembled individually, avoiding the time and effort of disassembling the whole pipe. The first limiting ring 27 is fixedly connected to both ends of the outer side of the chilled water pipe 23, and the second limiting ring 28 is fixedly connected to the outer side of the handle 26. Both of them are used to limit the displacement range of the pressure spring 24 and provide a connection point.

[0029] like Figure 1 and Figure 5As shown, the water flow isolation assembly 3 includes a bent conveying pipe 31 rotatably connected to the outside of the transfer conveying pipe 25. A water-stop ring 34 is rotatably connected inside the bent conveying pipe 31. A threaded column 33 is fixedly connected to the top of the water-stop ring 34. A receiving ring 32 is fixedly connected inside the bent conveying pipe 31. A rotating torsion block 36 is fixedly connected to the top of the threaded column 33. An anti-slip protrusion structure is provided on the outer edge of the rotating torsion block 36. A sealing ring 37 is fixedly provided at the bottom of the rotating torsion block 36. The sealing ring 37 is made of high-temperature resistant silicone rubber material. The inner wall of the receiving ring 32 is provided with a conical guide surface that matches the sealing ring 37. The outer side of the sealing ring 37 and the top of the receiving ring 32 form an insertion fit structure. The adjusting cap 35 controls the axial compression of the sealing ring 37 through a threaded connection.

[0030] The bent delivery pipe 31 is rotatably connected to the outside of the transfer delivery pipe 25 to change the water flow direction and guide the coolant in the chilled water pipe 23 to other pipes or equipment. The water-stop ring 34 is rotatably connected to the inside of the bent delivery pipe 31 to provide a seal when the water flow is interrupted, preventing coolant leakage. The threaded post 33 is fixedly connected to the top of the water-stop ring 34 to connect the water-stop ring 34 to the rotating torsion block 36 and to achieve axial adjustment through the threaded connection. The receiving ring 32 is fixedly connected to the inside of the bent delivery pipe 31 to receive the sealing ring 37 and provide guidance and support, ensuring the reliability of the sealing performance and preventing the sealing ring 37 from shifting during operation. The rotating torsion block 36 is fixedly connected to the top of the threaded post 33 for manual or mechanical... The axial clamping force of the sealing ring 37 is adjusted by rotation via a threaded connection, providing a convenient operation method for on-site adjustment of the sealing force to adapt to different working conditions. The sealing ring 37 is fixedly connected to the bottom end of the rotating torsion block 36 and is made of high-temperature resistant silicone rubber material. It is used to form a sealing fit with the receiving ring 32 to prevent coolant leakage. The high-temperature resistant silicone rubber material ensures that the sealing ring 37 can maintain good sealing performance in high-temperature environments, enhances the sealing effect, and prevents the sealing ring 37 from shifting during operation. The adjusting cap 35 is threadedly connected to the outside of the threaded post 33 and is used to control the axial clamping force of the sealing ring 37 via a threaded connection. The axial clamping force of the sealing ring 37 can be precisely adjusted through the threaded connection to ensure uniform distribution of the sealing force.

[0031] Working principle:

[0032] like Figure 1 - Figure 5 As shown:

[0033] In use: First, rotating the handle 26 drives the adapter delivery pipe 25 to move axially relative to the cooling water pipe 23, which in turn drives the second limit ring 28 to compress the pressure spring 24. The spring preload force then tightly locks the threaded connection between the adapter delivery pipe 25 and the cooling water pipe 23, thus enabling the disassembly and assembly of a partial component without disassembling the entire pipeline, while ensuring the coolant delivery seal. When rotating the rotating torsion block 36, its bottom sealing ring 37 moves along the tapered guide surface of the receiving ring 32 along the threaded post 33. The downward movement causes the water-stop ring 34 to form a radial compression with the inner wall of the bent delivery pipe 31. The deformation of the sealing ring 37 can be controlled by the adjusting cap 35, thereby achieving the isolation and sealing of the coolant flow channel. This facilitates the disassembly of individual pipes. When the refrigeration radiator 22 is running, the refrigerant is transferred to the inner wall of the limit plate 21 through the cooling water pipe 23. It first absorbs the heat generated by the battery body 1, and then expands the cooling circuit through the linkage of the transfer delivery pipe 25 and the bent delivery pipe 31, achieving the purpose of cooling and temperature reduction.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A heat dissipation device for a hydrogen fuel cell, comprising a battery body (1), characterized in that: Heat dissipation component (2) and water flow isolation component (3); The heat dissipation component (2) includes a limiting plate (21) fixedly connected to both ends of the outer side of the battery body (1). The two limiting plates (21) are fixedly connected to a cooling heat dissipation machine (22) at opposite ends. A cooling water pipe (23) is fixedly connected inside the limiting plate (21). Both ends of the cooling water pipe (23) are threadedly connected to a transfer conveying pipe (25).

2. The hydrogen fuel cell heat dissipation device according to claim 1, characterized in that: Pressure springs (24) are fitted on both ends of the outer side of the cooling water pipe (23), a handle (26) is fixedly connected to the outer side of the transfer conveying pipe (25), and a first limiting ring (27) is fixedly connected to both ends of the outer side of the cooling water pipe (23).

3. The hydrogen fuel cell heat dissipation device according to claim 1, characterized in that: The water flow isolation assembly (3) includes a bent conveying pipe (31) rotatably connected to the outside of the transfer conveying pipe (25), a water stop ring (34) rotatably connected inside the bent conveying pipe (31), a threaded column (33) fixedly connected to the top of the water stop ring (34), and a receiving ring (32) fixedly connected inside the bent conveying pipe (31).

4. The hydrogen fuel cell heat dissipation device according to claim 3, characterized in that: The top of the threaded column (33) is fixedly connected to the rotating torsion block (36), and the bottom of the rotating torsion block (36) is fixedly provided with a sealing ring (37). The outer side of the sealing ring (37) and the top of the receiving ring (32) form an insertion fit structure. The adjusting cap (35) controls the axial pressing of the sealing ring (37) through the threaded connection.

5. The hydrogen fuel cell heat dissipation device according to claim 2, characterized in that: One end of the pressure spring (24) is rotatably connected to the first limiting ring (27), and the other end of the pressure spring (24) is rotatably connected to the second limiting ring (28). The pressure spring (24) generates axial preload when the throttle (26) rotates.

6. The hydrogen fuel cell heat dissipation device according to claim 4, characterized in that: The inner wall of the receiving ring (32) is provided with a conical guide surface that matches the sealing ring (37), the outer edge of the rotating torsion block (36) is provided with an anti-slip protrusion structure, and the sealing ring (37) is made of high temperature resistant silicone rubber material.

Images