Lithium ion battery pack heat dissipation structure

Abstract

The utility model relates to lithium ion battery bank heat dissipation structure in the field of heat dissipation structure, including battery case, its inside even distribution battery. The inside of shell is equipped with the heat dissipation plate with the corresponding position of battery, and the heat dissipation plate surface is equipped with the heat dissipation hole, first limit strip and sets up the vent hole, and the inner chamber sets up the vent groove, the fan is installed at the air inlet of shell surface, can guide airflow to pass through the heat dissipation plate and its relevant structure, carries away battery heat. The air outlet is set up at the bottom of shell, is favorable to hot air flow to discharge forms heat dissipation circulation. In addition, the second limit strip is arranged and is equipped with the intercommunication groove in the corresponding position of the inner wall of shell and battery, is fixed battery at the same time auxiliary airflow circulation. The structure passes through the synergies of heat dissipation plate, fan, air outlet and second limit strip etc. component, effectively guides airflow circulation, improves the heat dissipation efficiency of lithium ion battery bank, guarantees battery to work under the suitable temperature, has improved the heat dissipation effect to battery bank.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation structures, specifically to heat dissipation structures for lithium-ion battery packs. Background Technology

[0002] The battery pack heat dissipation structure ensures efficient heat dissipation and maintains cell temperature uniformity by rationally arranging heat dissipation channels, optimizing cell spacing and arrangement, and combining temperature sensors with active / passive cooling systems, thereby improving safety, cycle life and charge / discharge efficiency.

[0003] In existing technologies, lithium-ion battery packs generate a lot of heat during operation. However, traditional battery pack heat dissipation structures often suffer from poor airflow guidance, making it difficult for airflow to effectively pass through the heat dissipation components and remove heat. Furthermore, they lack reasonable hot airflow exhaust channels, which is not conducive to forming an effective heat dissipation cycle. At the same time, the battery fixing structure does not fully consider the need for auxiliary airflow, resulting in low overall heat dissipation efficiency. This makes it impossible to ensure that the battery operates at a suitable temperature, affecting battery performance and lifespan. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned shortcomings by providing a heat dissipation structure for lithium-ion battery packs. This structure facilitates the disassembly and assembly of toys and solves the problem of hard-to-reach dead corners in the existing cleaning process, which makes cleaning incomplete, easily breeds bacteria, and affects the hygiene and safety of use. At the same time, this structure is also not conducive to the technical problem of performing individual deep cleaning and disinfection of each part of the toy.

[0005] The objective of this utility model is achieved through the following means:

[0006] A lithium-ion battery pack heat dissipation structure includes a battery casing, with batteries evenly distributed inside the casing. A heat dissipation plate is installed inside the battery casing at positions corresponding to the batteries. A fan is installed at an air inlet on the surface of the battery casing. Heat dissipation holes are evenly distributed on the surface of the heat dissipation plate. First limiting strips are evenly distributed on the surface of the heat dissipation plate, each with ventilation holes. Ventilation slots are opened and closed within the inner cavity of the heat dissipation plate. An air outlet is opened at the bottom of the battery casing. Second limiting strips are evenly distributed on the inner wall of the battery casing at positions corresponding to the batteries, each with a connecting slot.

[0007] Furthermore, an installation groove is provided at the air inlet of the battery casing, and the fan is installed inside the installation groove. The size and shape of the installation groove are adapted to the fan. The size and shape parameters of the fan are measured, and a matching installation groove is planned and processed at the air inlet position of the battery casing based on these parameters to ensure that the size and shape of the installation groove can fit the fan tightly. Finally, the fan is securely installed in the processed installation groove.

[0008] The mounting slot is connected to the fan via a sliding mechanism. This design takes into account the size differences of different fan models and the varying installation depth requirements in actual installation scenarios. The mounting slot is designed as an adjustable-depth structure. Specifically, a sliding base plate is installed at the bottom of the mounting slot. The base plate and the side wall of the mounting slot are slidably connected via a guide rail and slider. The guide rail is fixed to the side wall of the mounting slot along its depth direction, while the sliders are installed on both sides of the base plate, forming a tight sliding engagement with the guide rail. An adjustment knob is located on the outside of the mounting slot, connected to the base plate via a screw drive mechanism. When the mounting slot depth needs adjustment, rotating the adjustment knob converts the rotational motion into linear motion, causing the base plate to slide on the guide rail, thus achieving precise adjustment of the mounting slot depth. The adjustment range is designed according to the size differences of common fan models, generally adjustable between 50-200 mm to meet different installation requirements.

[0009] Furthermore, the surface of the fan is equipped with an installation ring, and bolts are evenly distributed on the surface of the installation ring. All bolts pass through the installation ring and are screwed onto the surface of the battery casing. The fan can be disassembled by removing the bolts, which facilitates the maintenance of the fan.

[0010] Furthermore, the fan is equipped with an internal mounting bracket, on the surface of which fan blades are mounted via bearings. The mounting bracket is attached to the inner wall of the fan housing via threaded rods. Removing the mounting bracket allows for the disassembly of the fan blades without disassembling the entire fan housing. Simply removing the mounting bracket from the fan allows for direct cleaning, repair, or replacement of the fan blades. This not only improves maintenance efficiency and reduces maintenance costs but also extends the fan's service life, ensuring that the fan is always in good working condition.

[0011] Furthermore, the air inlet of the fan is equipped with a dustproof net, which is installed on the surface of the mounting ring. The dustproof net can intercept dust in the air and prevent dust from entering the interior of the battery casing.

[0012] Furthermore, the second limiting strip is connected to the inner wall of the battery casing via a detachable snap-fit ​​structure. The snap-fit ​​structure includes a slot on the inner wall of the battery casing and a snap block on the second limiting strip that matches the slot, facilitating the installation, disassembly, and maintenance of the second limiting strip.

[0013] The beneficial effects of this utility model are as follows: the added heat sink plate has heat dissipation holes, a first limiting strip with ventilation holes, and a ventilation groove in the inner cavity. Combined with the air blower at the air inlet on the surface of the battery casing, it can guide airflow to effectively pass through the heat sink plate and its related structures, carrying away the heat generated by the battery. At the same time, an air outlet is opened at the bottom of the battery casing, which facilitates the discharge of hot air and forms a heat dissipation cycle. In addition, a second limiting strip and a connecting groove are arranged on the inner wall of the battery casing at the corresponding position of the battery. While fixing the battery, it can also assist the airflow. The overall structure works together to effectively improve the heat dissipation efficiency of the lithium-ion battery pack, ensure that the battery works at a suitable temperature, and improve the heat dissipation efficiency of the battery pack. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the installation structure of the heat sink of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the fan of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the battery casing of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the heat sink of this utility model;

[0020] In the diagram, 1. Battery casing; 2. Battery; 3. Heat sink; 4. Fan; 5. Heat dissipation hole; 6. First limiting strip; 7. Ventilation hole; 8. Ventilation slot; 9. Air outlet; 10. Second limiting strip; 11. Connecting slot; 12. Mounting slot; 13. Mounting ring; 14. Bolt; 15. Mounting bracket; 16. Fan blade; 17. Dustproof net. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] In this embodiment, refer to Figures 1-6The specific implementation of the lithium-ion battery pack heat dissipation structure includes a battery casing 1, batteries 2 evenly arranged inside the battery casing 1, heat dissipation plates 3 installed inside the battery casing 1 at positions corresponding to the batteries 2, a fan 4 installed at the air inlet on the surface of the battery casing 1, heat dissipation holes 5 evenly arranged on the surface of the heat dissipation plates 3, first limiting strips 6 evenly arranged on the surface of the heat dissipation plates 3, ventilation holes 7 opened on the surface of the first limiting strips 6, ventilation slots 8 opened and closed in the inner cavity of the heat dissipation plates 3, an air outlet 9 opened at the bottom of the battery casing 1, and second limiting strips 10 evenly arranged on the inner wall of the battery casing 1 at positions corresponding to the batteries 2, with connecting slots 11 opened on the surface of the second limiting strips 10.

[0023] The heat sink 3 has heat dissipation holes 5, a first limiting strip 6, ventilation holes 7, and ventilation slots 8 in its inner cavity. Together with the fan 4 at the air inlet on the surface of the battery casing 1, it can guide airflow to effectively pass through the heat sink 3 and its related structures, carrying away the heat generated by the battery 2. At the same time, the bottom of the battery casing 1 has an air outlet 9, which facilitates the discharge of hot air and forms a heat dissipation cycle. In addition, the inner wall of the battery casing 1 is provided with a second limiting strip 10 and a connecting slot 11 at the corresponding position of the battery 2. While fixing the battery 2, it can also assist the airflow. The overall structure works together to effectively improve the heat dissipation efficiency of the lithium-ion battery pack, ensure that the battery 2 works at a suitable temperature, and improve the heat dissipation efficiency of the battery pack.

[0024] A mounting groove 12 is provided at the air inlet of the battery casing 1. The fan 4 is installed inside the mounting groove 12. The size and shape of the mounting groove 12 are adapted to the fan 4. The size and shape parameters of the fan 4 are measured, and the matching mounting groove 12 is planned and processed at the air inlet position of the battery casing 1 based on these parameters. This ensures that the size and shape of the mounting groove 12 can fit tightly to the fan 4. Finally, the fan 4 is securely installed in the processed mounting groove 12. The mounting groove 12 and the fan 4 can be connected by a sliding mechanism, thereby realizing the adjustment of the installation depth of the mounting groove 12 to adapt to the installation requirements of different models and different functions of fans and improve the heat dissipation efficiency.

[0025] A mounting ring 13 is installed on the surface of the fan 4. Bolts 14 are evenly distributed on the surface of the mounting ring 13. The bolts 14 all pass through the mounting ring 13 and are screwed onto the surface of the battery casing 1. The fan 4 can be disassembled by removing the bolts 14, which facilitates the maintenance of the fan 4.

[0026] The fan 4 has a mounting bracket 15 installed inside. The fan blades 16 are mounted on the surface of the mounting bracket 15 via bearings. The mounting bracket 15 is installed on the inner wall of the fan 4 housing via threaded rods. The fan blades 16 can be disassembled by removing the mounting bracket 15 without disassembling the entire fan 4 housing. Simply remove the mounting bracket 15 from the inside of the fan 4 to directly clean, repair or replace the fan blades 16. This not only improves maintenance efficiency and reduces maintenance costs, but also extends the service life of the fan 4 and ensures that the fan 4 is always in good working condition.

[0027] The air inlet of the fan 4 is equipped with a dustproof net 17, which is installed on the surface of the mounting ring 13. The dustproof net 17 can intercept dust in the air and prevent dust from entering the interior of the battery casing 1.

[0028] The second limiting strip 10 is connected to the inner wall of the battery casing 1 by a detachable snap-fit ​​structure. The snap-fit ​​structure includes a slot provided on the inner wall of the battery casing 1 and a snap block on the second limiting strip 10 that is adapted to the slot, which facilitates the installation, disassembly and maintenance of the second limiting strip 10.

[0029] The working process of the lithium-ion battery pack heat dissipation structure in this embodiment is as follows: The fan 4 is installed in the mounting groove 12 adapted to the size and shape of the battery casing 1 at the air inlet. The fan 4 is securely installed on the surface of the battery casing 1 by the mounting ring 13 with bolts 14 on its surface. The fan blades 16 are installed on the mounting bracket 15 on the inner wall of the casing by the threaded rod. Dust is intercepted at the air inlet of the fan 4 by the dustproof net 17 installed on the surface of the mounting ring 13. The fan 4 delivers air, and the airflow passes through the heat dissipation holes 5 on the surface of the heat dissipation plate 3, the ventilation holes 7 on the surface of the first limiting strip 6, and the ventilation groove 8 in the inner cavity, which carries away the heat generated by the battery 2. At the same time, the connecting groove 11 on the surface of the second limiting strip 10 arranged on the inner wall of the battery casing 1 at the corresponding position of the battery 2 assists the airflow. Finally, the hot airflow is discharged from the air outlet 9 at the bottom of the battery casing 1 to form a heat dissipation cycle. When the fan 4 needs to be maintained, the fan 4 can be removed by removing the bolts 14, and the fan blades 16 can be removed by removing the mounting bracket 15 for cleaning, repair or replacement.

[0030] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A heat dissipation structure for a lithium-ion battery pack, comprising a battery casing, wherein batteries are evenly distributed inside the battery casing, and heat dissipation plates are installed inside the battery casing at positions corresponding to the batteries, characterized in that: A fan is installed at the air inlet on the surface of the battery casing. The surface of the heat sink is evenly distributed with heat dissipation holes. The surface of the heat sink is evenly distributed with first limiting strips. The surface of each first limiting strip is provided with ventilation holes. The inner cavity of the heat sink is provided with ventilation slots. The bottom of the battery casing is provided with an air outlet. The inner wall of the battery casing is evenly distributed with second limiting strips at positions corresponding to the battery. The surface of each second limiting strip is provided with a connecting groove.

2. The heat dissipation structure of the lithium-ion battery pack according to claim 1, characterized in that: The battery casing has an air inlet with a mounting slot, and the fan is installed inside the mounting slot. The mounting slot and the fan are connected by a sliding mechanism.

3. The heat dissipation structure of the lithium-ion battery pack according to claim 1, characterized in that: The surface of the fan is equipped with an mounting ring, and bolts are evenly distributed on the surface of the mounting ring. All bolts pass through the mounting ring and are screwed onto the surface of the battery casing.

4. The heat dissipation structure of the lithium-ion battery pack according to claim 1, characterized in that: The fan has an internal mounting bracket, and fan blades are mounted on the surface of the mounting bracket via bearings. The mounting bracket is mounted to the inner wall of the fan housing via threaded rods.

5. The heat dissipation structure of the lithium-ion battery pack according to claim 3, characterized in that: The air inlet of the fan is equipped with a dustproof net, which is installed on the surface of the mounting ring.

6. The heat dissipation structure of the lithium-ion battery pack according to claim 1, characterized in that: The second limiting strip is connected to the inner wall of the battery casing by a detachable snap-fit ​​structure, the snap-fit ​​structure including a slot provided on the inner wall of the battery casing and a snap block on the second limiting strip that is adapted to the slot.

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