CN223828506U - A cylindrical lithium battery heat dissipation structure - Google Patents

Abstract

This utility model relates to the field of lithium battery heat dissipation technology, and more particularly to a cylindrical lithium battery heat dissipation structure. The utility model includes a fixed base, with a protective shell fixedly connected to the top of the fixed base. Several ventilation pipes are fixedly connected to both sides of the bottom of the inner cavity of the protective shell, with the tops of the ventilation pipes penetrating the top of the protective shell. A protective ventilation inner shell is provided within the inner cavity of the protective ventilation inner shell, and three heat sinks are fixedly connected to the inner cavity of the protective ventilation inner shell. This utility model has the advantages of good ventilation and heat dissipation. In actual use, the heat sinks facilitate heat exchange with the surrounding air to reduce the temperature. As the surface temperature of the heat sinks increases, the temperature of the surrounding air also increases, and the air density decreases, thus forming natural convection. The heat sinks can accelerate the occurrence of convection, allowing heat to be carried away more quickly.

Description

A cylindrical lithium battery heat dissipation structure

Technical Field

This utility model relates to the field of lithium battery heat dissipation technology, specifically a cylindrical lithium battery heat dissipation structure.

Background Technology

Lithium batteries generate heat during use, especially during fast charging or high-current discharge, when the temperature rises rapidly. If the internal temperature of the battery is too high, it may lead to a decrease in battery performance or even safety hazards such as thermal runaway, fire or explosion. Therefore, an effective heat dissipation structure is an essential part of battery design.

Existing cylindrical lithium batteries face certain challenges in heat dissipation. Since they are often installed inside devices with relatively enclosed internal spaces, the batteries generate a large amount of heat during operation. If this heat cannot be dissipated effectively and in a timely manner, the internal temperature of the battery will continue to rise, leading to a series of problems. Long-term overheating can cause battery performance degradation and even safety hazards such as expansion, leakage, or short circuits. In addition, high temperatures can accelerate the deterioration process of the battery's chemical reactions, directly affecting the battery's charging and discharging efficiency and shortening its lifespan.

Utility Model Content

The purpose of this invention is to provide a cylindrical lithium battery heat dissipation structure that has the advantages of good ventilation and heat dissipation, and solves the problems mentioned in the background art.

To achieve the above objectives, this utility model provides the following technical solution: a cylindrical lithium battery heat dissipation structure, including a fixed base, a protective shell fixedly connected to the top of the fixed base, several ventilation pipes fixedly connected to both sides of the bottom of the inner cavity of the protective shell, and the top of the ventilation pipes penetrating the top of the protective shell, a protective ventilation inner shell provided in the inner cavity of the protective shell, three heat sinks fixedly connected to the inner cavity of the protective ventilation inner shell, batteries movably connected to the inner walls of the three heat sinks, first ventilation fixing blocks fixedly connected to both sides of the bottom of the protective ventilation inner shell, two second ventilation fixing blocks fixedly connected to the middle position of the bottom of the protective ventilation inner shell, the first ventilation fixing blocks and the second ventilation fixing blocks being fixedly connected to the top of the fixed base, and the lower ends of the three batteries being evenly arranged between the first ventilation fixing blocks and the second ventilation fixing blocks, two fixing connecting rods symmetrically fixedly connected to both sides of the first ventilation fixing blocks and the second ventilation fixing blocks, two first protective frames fixedly connected to one side of the inner cavity of the protective shell, sliding blocks slidably connected to the inner cavities of the two first protective frames, a fan fixedly connected to one side of the sliding block, and the upper first protective frame... The inner cavity of the first protective frame is rotatably connected to a first threaded rod, and the upper sliding block is threadedly connected to the first threaded rod. A second protective frame is fixedly connected to one side of the upper first protective frame. A motor is fixedly connected to one side of the inner cavity of the second protective frame. The output shaft of the motor is fixedly connected to the first threaded rod. A first gear is fixedly connected to the surface of the first threaded rod, and the first gear is located in the inner cavity of the second protective frame. A second gear is rotatably connected to the bottom of the inner cavity of the second protective frame. The first gear and the second gear mesh with each other. A rotating rod is fixedly connected to the bottom of the second gear. A third protective frame is fixedly connected to one side of the lower first protective frame. One side of the third protective frame and the second protective frame are both fixedly connected to the protective shell. A third gear is rotatably connected to one side of the inner cavity of the third protective frame. The other end of the rotating rod passes through the second protective frame to the inner cavity of the third protective frame and is fixedly connected to a fourth gear. The third gear and the fourth gear mesh with each other. A second threaded rod is fixedly connected to one side of the third gear. One end of the second threaded rod is rotatably connected to the first protective frame. The second threaded rod is slidably connected to the lower sliding block. The first threaded rod and the second threaded rod are threaded in opposite directions.

Furthermore, as a preferred embodiment of this invention, each of the ventilation pipes has a filter screen fixedly connected to its inner cavity.

Furthermore, as a preferred embodiment of this utility model, the protective ventilated inner shell has several first ventilation and heat dissipation slots on both sides.

Furthermore, as a preferred embodiment of this utility model, second ventilation and heat dissipation slots are provided through the surfaces on both sides of several first ventilation fixing blocks and second ventilation fixing blocks.

Furthermore, as a preferred embodiment of this utility model, threaded holes are provided at all four corners of the fixed base, and bolts are threaded into the inner cavity of the threaded holes.

Beneficial effects: The technical solution of this application has the following technical effects: This utility model has the advantage of good ventilation and heat dissipation. In actual use, the temperature is reduced by heat exchange with the surrounding air through the heat sink. As the surface temperature of the heat sink increases, the temperature of the surrounding air also increases, and the air density decreases, thereby forming natural convection. The heat sink can accelerate the occurrence of convection, so that heat is carried away more quickly. Through the coordinated use of the fan, the first threaded rod, the motor, and the second threaded rod, airflow can be effectively realized inside the device, thereby blowing air to dissipate heat from the internal structure. Through the opposite action of the first threaded rod and the second threaded rod, an effective airflow path can be formed inside the device, maximizing the promotion of air circulation, improving heat dissipation efficiency, accelerating heat dissipation, effectively reducing the temperature of the battery, thereby reducing heat accumulation and the risk of overheating.

It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.

Attached Figure Description

The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

Figure 1 is a schematic diagram of the structure of this utility model;

Figure 2 is a top view of the overall device of this utility model;

Figure 3 is a schematic diagram of the overall internal structure of the device of this utility model;

Figure 4 is a schematic diagram of the internal air-cooling structure of the device of this utility model.

Figure 5 is a schematic diagram of the internal air-cooling structure of the device of this utility model.

In the figure, the meanings of the various reference numerals are as follows: 1. Fixed base; 2. Protective outer shell; 3. Ventilation duct; 4. Protective ventilation inner shell; 5. Heat sink; 6. Battery; 7. First ventilation fixing block; 8. Second ventilation fixing block; 9. Fixed connecting rod; 10. First protective frame; 11. Sliding block; 12. Fan; 13. First threaded rod; 14. Second protective frame; 15. Motor; 16. First gear; 17. Second gear; 18. Rotating rod; 19. Third protective frame; 20. Third gear; 21. Fourth gear; 22. Second threaded rod; 23. Filter screen; 24. Bolt.

Detailed Implementation

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. To better understand the technical content of the present utility model, specific embodiments are provided and described in conjunction with the accompanying drawings. Various aspects of the present utility model are described in this disclosure with reference to the accompanying drawings, which show many illustrative embodiments. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

As shown in Figures 1 to 5: This embodiment provides a cylindrical lithium battery heat dissipation structure, including a fixed base 1. A protective shell 2 is fixedly connected to the top of the fixed base 1. Several ventilation pipes 3 are fixedly connected to both sides of the bottom of the inner cavity of the protective shell 2, and the top of the ventilation pipes 3 penetrates through the top of the protective shell 2. A protective ventilation inner shell 4 is provided in the inner cavity of the protective shell 2. Three heat sinks 5 are fixedly connected to the inner cavity of the protective ventilation inner shell 4. A battery 6 is movably connected to the inner wall of each of the three heat sinks 5. First ventilation fixing blocks 7 are fixedly connected to both sides of the bottom of the protective ventilation inner shell 4. Two... A second ventilation fixing block 8, the first ventilation fixing block 7 and the second ventilation fixing block 8 are both fixedly connected to the top of the fixing base 1, and the lower ends of the three batteries 6 are evenly arranged between the first ventilation fixing block 7 and the second ventilation fixing block 8. Two fixing connecting rods 9 are symmetrically fixedly connected to the sides of the first ventilation fixing block 7 and the second ventilation fixing block 8. Two first protective frames 10 are fixedly connected to one side of the inner cavity of the protective shell 2. Sliding blocks 11 are slidably connected to the inner cavities of the two first protective frames 10. A fan 12 is fixedly connected to one side of the sliding block 11. A first threaded rod 13 is rotatably connected to the inner cavity of the upper first protective frame 10, and the upper end... The sliding block 11 is threadedly connected to the first threaded rod 13. A second protective frame 14 is fixedly connected to one side of the upper first protective frame 10. A motor 15 is fixedly connected to one side of the inner cavity of the second protective frame 14. The output shaft of the motor 15 is fixedly connected to the first threaded rod 13. A first gear 16 is fixedly connected to the surface of the first threaded rod 13, and the first gear 16 is located in the inner cavity of the second protective frame 14. A second gear 17 is rotatably connected to the bottom of the inner cavity of the second protective frame 14. The first gear 16 and the second gear 17 mesh with each other. A rotating rod 18 is fixedly connected to the bottom of the second gear 17. A rotating rod 18 is fixedly connected to one side of the lower first protective frame 10. The third protective frame 19 and the second protective frame 14 are both fixedly connected to the protective shell 2 on one side. The third gear 20 is rotatably connected to one side of the inner cavity of the third protective frame 19. The other end of the rotating rod 18 passes through the second protective frame 14 and is fixedly connected to the inner cavity of the third protective frame 19 with a fourth gear 21. The third gear 20 and the fourth gear 21 mesh with each other. The second threaded rod 22 is fixedly connected to one side of the third gear 20. One end of the second threaded rod 22 is rotatably connected to the first protective frame 10. The second threaded rod 22 is slidably connected to the lower sliding block 11. The first threaded rod 13 and the second threaded rod 22 are threaded in opposite directions.

Specifically, filters 23 are fixedly connected to the inner cavities of several ventilation pipes 3.

In this embodiment, the filter 23 effectively ensures that external dust cannot enter the device during ventilation, thereby avoiding dust contamination and potential damage to internal components and improving the device's service life and normal operation.

Specifically, several first ventilation and heat dissipation slots are provided on both sides of the protective ventilation inner shell 4.

In this embodiment, the first ventilation and heat dissipation slot effectively provides ventilation and heat dissipation for the battery, ensuring that the battery maintains a suitable temperature during operation, optimizing heat dissipation, preventing overheating, improving its safety and performance stability, and thus extending the battery's lifespan.

Specifically, second ventilation and heat dissipation slots are provided through the surfaces on both sides of several first ventilation fixing blocks 7 and second ventilation fixing blocks 8.

In this embodiment, the setting of the second ventilation and heat dissipation slot can achieve effective ventilation and heat dissipation at the bottom of the battery, ensuring that the heat in the bottom area of the battery can be smoothly discharged, and avoiding battery performance degradation or damage due to excessive temperature.

Specifically, threaded holes are provided at all four corners of the fixed base 1, and bolts 24 are threaded into the inner cavity of the threaded holes.

In this embodiment, the use of threaded holes and bolts 24 allows the device to be securely installed in a designated position, ensuring that the device does not loosen during long-term use and improving the stability of the device during operation.

The working principle and usage process of this utility model: The user securely fixes the device in the desired position using the filter 23 to ensure stability and prevent shaking during operation. The user first opens the top of the protective shell 2 and inserts the battery 6 into the inner cavity of the heat sink 5. The outer wall of the heat sink 5 is fixedly connected to the protective ventilation inner shell 4. When the battery overheats, the user can start the motor 15. The motor 15 is located on one side of the inner cavity of the protective shell 2, with a certain gap between it and the protective ventilation inner shell 4. The output shaft of the motor 15 drives the first threaded rod 13 to rotate. A first gear is fixedly connected to the surface of the first threaded rod 13. 16. The first gear 16 meshes with the second gear 17. The first threaded rod 13 drives the first gear 16 to rotate, which in turn drives the second gear 17 to rotate. The bottom of the second gear 17 is fixedly connected to the rotating rod 18. The other end of the rotating rod 18 passes through the inner cavity of the second protective frame 14 to the third protective frame 19 and is fixedly connected to the fourth gear 21. The third gear 20 meshes with the fourth gear 21. One side of the third gear 20 is fixedly connected to the second threaded rod 22. The rotating rod 18 drives the fourth gear 21 to rotate, thereby driving the second threaded rod 22 to rotate. The rotation of the first threaded rod 13 and the second threaded rod 22... The two sliding blocks 11 slide within the inner cavity of the first protective frame 10. One side of each sliding block 11 is fixedly connected to the fan 12. The threads of the first threaded rod 13 and the second threaded rod 22 are reversed, causing the fan 12 to move in opposite directions, increasing the fan's heat dissipation area. This process allows the device to be cooled and dissipated evenly, effectively reducing the internal temperature. First ventilation slots are provided on both sides of the protective ventilation inner shell 4. With the help of the fan 12, these slots enhance the ventilation effect inside the device, improving heat dissipation performance. Simultaneously, a [missing information - likely a device name or feature] is provided within the inner cavity of the protective ventilation inner shell 4. Heat sink 5 effectively enhances the heat dissipation function of battery 6, ensuring that battery 6 maintains a stable temperature during operation. The first ventilation fixing block 7 and the second ventilation fixing block 8 at the bottom of the device are used to place battery 6. The surfaces of the first ventilation fixing block 7 and the second ventilation fixing block 8 are provided with second ventilation and heat dissipation slots, which are specifically used to dissipate heat from the bottom of battery 6. Finally, the hot air inside the device is discharged to the outside of the device through the ventilation pipes 3 on both sides of the protective shell 2. A filter screen 23 is installed in the inner cavity of the ventilation pipe 3 to isolate external dust, effectively reducing the impact of dust on the ventilation and heat dissipation effect of the device and ensuring the long-term efficient operation of the device.

It should be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims (5)

1. A heat dissipation structure of a cylindrical lithium battery comprises a fixed base (1), and is characterized in that the top of the fixed base (1) is fixedly connected with a protective outer shell (2), two sides of the bottom of an inner cavity of the protective outer shell (2) are fixedly connected with a plurality of ventilation pipes (3), the top of the ventilation pipes (3) penetrates through the top of the protective outer shell (2), the inner cavity of the protective outer shell (2) is provided with a protective ventilation inner shell (4), the inner cavity of the protective ventilation inner shell (4) is fixedly connected with three radiating fins (5), the inner walls of the radiating fins (5) are fixedly connected with a battery (6), two sides of the bottom of the protective ventilation inner shell (4) are fixedly connected with a first ventilation fixed block (7), the middle position of the bottom of the protective ventilation inner shell (4) is fixedly connected with two second ventilation fixed blocks (8), the first ventilation fixed block (7) and the second ventilation fixed block (8) are fixedly connected with the top of the fixed base (1), the lower ends of the three batteries (6) are uniformly arranged at the top of the first fixed block (7) and the second ventilation fixed block (8), two sides of the protective inner shell (8) are fixedly connected with a connecting rod (10) between the first ventilation fixed block (7) and the second ventilation inner shell (8), the inner cavities of the two first protection frames (10) are both in sliding connection with a sliding block (11), one side of the sliding block (11) is fixedly connected with a fan (12), the inner cavity of the first protection frame (10) at the upper end is rotationally connected with a first threaded rod (13), the sliding block (11) at the upper end is in threaded connection with the first threaded rod (13), one side of the first protection frame (10) at the upper end is fixedly connected with a second protection frame (14), one side of the inner cavity of the second protection frame (14) is fixedly connected with a motor (15), an output shaft of the motor (15) is fixedly connected with the first threaded rod (13), the surface of the first threaded rod (13) is fixedly connected with a first gear (16), the first gear (16) is arranged in the inner cavity of the second protection frame (14), the bottom of the inner cavity of the second protection frame (14) is rotationally connected with a second gear (17), the first gear (16) is meshed with the second gear (17), the bottom of the second gear (17) is fixedly connected with a motor (15), the output shaft of the motor (15) is fixedly connected with the first gear (13) at the lower end of the first protection frame (19), the first side (19) is fixedly connected with the first protection frame (19), the inner cavity fixedly connected with fourth gear (21) of dwang (18) other end through second guard frame (14) to third guard frame (19), third gear (20) and fourth gear (21) intermeshing, one side fixedly connected with second threaded rod (22) of third gear (20), the one end and the first guard frame (10) rotation of second threaded rod (22) are connected, sliding block (11) sliding connection of second threaded rod (22) and lower extreme, first threaded rod (13) and second threaded rod (22) reverse screw thread setting.

2. The cylindrical lithium battery heat dissipation structure according to claim 1 is characterized in that the inner cavities of the ventilating pipes (3) are fixedly connected with filter screens (23).

3. The heat dissipation structure of a cylindrical lithium battery as set forth in claim 1, wherein a plurality of first ventilation heat dissipation notches are formed on two sides of the protection ventilation inner shell (4).

4. The cylindrical lithium battery heat dissipation structure according to claim 1, wherein the surfaces of the two sides of the first ventilation fixing blocks (7) and the second ventilation fixing blocks (8) are respectively provided with a second ventilation heat dissipation notch in a penetrating manner.

5. The cylindrical lithium battery heat dissipation structure as set forth in claim 1, wherein threaded holes are formed in four corners of the fixing base (1), and bolts (24) are connected with inner cavities of the threaded holes in a threaded mode.