Battery box structure and battery pack

Abstract

The utility model discloses a battery box structure and battery pack, battery box structure battery box structure includes: box, circuit component and heat conduction spare, the box is provided with the accommodation cavity, and the outer peripheral surface of box is provided with the fin, circuit component sets up in the accommodation cavity and is connected with the box, heat conduction spare sets up in the accommodation cavity, and heat conduction spare is connected with circuit component and the box respectively. The fin of the outer peripheral surface of box increases the contact area with external air, so that the heat can be taken away by the external flowing air more quickly, realizes the efficient cooling of circuit component. In addition, the circuit component and the box are connected only through the heat conduction spare, and the arrangement between the components is simplified by this structure design, so that the space utilization between the circuit component and the box is more compact, thereby saving more available space for the assembly of single battery, and the energy density of the battery pack is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of battery box structure, and more particularly to battery box structure and battery pack. Background Technology

[0002] With the increasing demands on power battery performance from applications such as new energy vehicles and energy storage systems, battery packs, as crucial carriers for the integration and application of individual batteries, are seeing their structural design and thermal management capabilities become a key focus of research and development. In existing technologies, battery packs typically include multiple individual batteries, a battery housing, and circuit components for status monitoring and protection. The battery housing primarily serves to support, protect, and safeguard the individual batteries, while also providing installation space for the circuit components and enabling energy management and safety protection functions. Circuit components, such as the battery management system (BMS), protection boards, and fuses, are usually electrically connected to the individual batteries and are responsible for monitoring battery operating status, distributing energy, and providing safety protection.

[0003] However, with the increasing integration and shrinking size of battery packs, the arrangement of circuit components is becoming increasingly compact. The heat generated during operation is difficult to dissipate effectively and promptly, easily leading to localized temperature increases, which in turn affects the operational stability and lifespan of the circuit components. Traditional battery pack structures typically use direct contact between the circuit components and the casing or simple thermal pads for heat conduction. However, due to high thermal resistance or inefficient heat dissipation paths, these methods struggle to meet the high-efficiency heat dissipation requirements under high power density. Furthermore, excessive connecting components or complex structural designs occupy limited internal space, reducing the capacity of individual cells and thus impacting the energy density and overall performance of the battery pack.

[0004] On the other hand, battery packs also need to meet requirements such as compact structure, convenient installation, and easy maintenance during actual assembly and operation. How to rationally integrate individual cells and circuit components within a limited space, while also ensuring efficient thermal management, is a major technical challenge currently facing battery pack design. Therefore, there is an urgent need for a new battery box structure that can improve space utilization, optimize heat dissipation paths, and enhance structural strength, in order to achieve a comprehensive improvement in battery pack safety, reliability, and energy density. Utility Model Content

[0005] To achieve the above objectives, the present invention provides a battery box structure: the battery box structure includes a box body, a circuit assembly, and a heat-conducting component. The box body has an accommodating cavity, and heat sinks are provided on the outer peripheral surface of the box body. The circuit assembly is disposed in the accommodating cavity and connected to the box body. The heat-conducting component is disposed in the accommodating cavity and is connected to both the circuit assembly and the box body.

[0006] Optionally, the heat-conducting component is connected to the portion of the housing that has heat sinks.

[0007] Optionally, the height of the heat-conducting component is D1, and the height of the heat sink is D2, where D1≤D2≤2D1.

[0008] Optionally, there are multiple heat sinks, which are spaced apart along a first direction. At least some of the heat sinks are provided with clearance grooves, and the length of the clearance grooves gradually decreases along the first direction.

[0009] Optionally, the ends of the heat sink forming the clearance groove are provided with rounded corners.

[0010] Optionally, the outer peripheral surface of the enclosure is provided with a receiving groove, and there are multiple heat sinks, which are spaced apart in the receiving groove along the first direction.

[0011] Optionally, the heat sink does not extend beyond the receiving slot.

[0012] Optionally, the height of the heat sink gradually decreases from both ends to its interior.

[0013] Optionally, the receiving slot has a through hole that extends through the casing on the side between the heat sinks.

[0014] This utility model also includes a battery pack, which includes: a single battery cell and a battery box structure, wherein the single battery cell is disposed in the battery box structure and the circuit components are connected to the single battery cell.

[0015] The beneficial effects of this utility model are as follows: This technical solution effectively solves the technical problems of difficult heat dissipation and low space utilization in the battery pack structure of circuit components. First, by setting a high-efficiency heat-conducting component between the circuit component and the housing, the heat generated during the operation of the circuit component can be quickly conducted to the housing, avoiding performance degradation or even damage to the circuit component due to excessive temperature. Second, the large-area heat sink set on the outside of the housing can make full use of the flowing air, effectively improving heat dissipation efficiency, achieving rapid cooling, ensuring that the circuit component and individual battery cells operate in a suitable temperature environment, and improving the safety and reliability of the entire battery pack. At the same time, only a heat-conducting component is set between the circuit component and the housing, simplifying the structure, optimizing the space layout, greatly improving the compactness of the component arrangement, and providing more assembly space for individual batteries, thereby improving the energy density of the battery pack. In summary, this technical solution achieves the technical effect of both high-efficiency heat dissipation and high energy density by optimizing the heat dissipation path and space utilization of the circuit component, effectively improving the overall performance and market competitiveness of the battery pack. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the battery pack provided in an embodiment of the present invention; Figure 2 This is a structural schematic diagram of the box provided in an embodiment of the present utility model; Figure 3 This is a structural schematic diagram of the box provided in an embodiment of the present utility model; Figure 4 This is a structural schematic diagram of the box provided in an embodiment of the present utility model.

[0018] Explanation of icon numbers: Individual cell 200, battery box structure 100, heat-conducting component 30, circuit assembly 20, box body 10 The container cavity 101, the receiving groove 102, the through hole 103, the heat sink 12, the clearance groove 14, and the rounded corner 16. Detailed Implementation

[0019] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings, clearly and comprehensively demonstrating the technical solution. It should be noted that the listed embodiments are only a part of this utility model, and not all possible implementations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] Please see Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the battery pack provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the box 10 provided in this embodiment of the utility model.

[0021] This embodiment provides a battery pack, including individual battery cells 200 and a battery box structure 100. Specifically, the individual battery cells 200 are disposed inside the battery box structure 100. The battery box structure 100 not only supports and protects the individual battery cells 200, but also houses and fixes the circuit assembly 20. The circuit assembly 20 is electrically connected to the individual battery cells 200, enabling energy output, status monitoring, and safety protection functions for the individual battery cells 200. The circuit assembly 20 may include components such as a battery management system (BMS), protection board, fuses, and connecting wires. These components are arranged in a reasonable manner to form an electrical connection with the individual battery cells 200, ensuring the normal operation of the battery pack. By integrating the individual battery cells 200 and the circuit assembly 20 inside the battery box structure 100, space utilization is optimized, making the overall structure of the battery pack more compact, simplifying wiring, facilitating installation and transportation, and also improving the mechanical strength and safety of the battery pack. In addition, the centralized placement of the circuit assembly 20 improves the efficiency of later maintenance and repair, facilitates centralized monitoring and management of battery status, and helps to improve the operational reliability and service life of the battery pack.

[0022] This embodiment relates to a novel battery box structure 100, which includes a box body 10, a circuit assembly 20, and a heat-conducting component 30. The box body 10 has a receiving cavity 101 for assembling individual battery cells 200. Heat sinks 12 are provided on the outer peripheral surface of the box body 10 to improve its heat dissipation capacity. The circuit assembly 20 is disposed within the receiving cavity 101 and connected to the box body 10. The circuit assembly 20 is used to electrically connect with the individual battery cells 200, thereby managing, monitoring, and protecting the individual battery cells 200. The heat-conducting component 30 is also disposed within the receiving cavity 101 and connected to both the circuit assembly 20 and the box body 10. Specifically, the circuit assembly 20 generates a large amount of heat during operation. This heat is first absorbed by the heat-conducting component 30 and then efficiently transferred to the box body 10 through the heat-conducting component 30. The heat sink 12 on the outer periphery of the housing 10 increases the contact area with the outside air, allowing heat to be carried away more quickly by the external airflow, thus achieving efficient cooling of the circuit assembly 20. Furthermore, the circuit assembly 20 and the housing 10 are connected only by a heat-conducting component 30. This structural design simplifies the arrangement of components, making the space between the circuit assembly 20 and the housing 10 more compact, thereby saving more usable space for the assembly of the individual battery cells 200 and effectively improving the energy density of the battery pack.

[0023] This technical solution effectively solves the technical problems of heat dissipation difficulties and low space utilization in the circuit component 20 of the battery pack structure. Firstly, by setting a high-efficiency heat-conducting component 30 between the circuit component 20 and the housing 10, the heat generated during the operation of the circuit component 20 can be quickly conducted to the housing 10, preventing performance degradation or even damage to the circuit component 20 due to overheating. Secondly, the large-area heat sink 12 on the outside of the housing 10 can fully utilize the flowing air, effectively improving heat dissipation efficiency and achieving rapid cooling, ensuring that the circuit component 20 and the individual battery cells 200 operate in a suitable temperature environment, thus improving the safety and reliability of the entire battery pack. Simultaneously, the use of only the heat-conducting component 30 between the circuit component 20 and the housing 10 simplifies the structure, optimizes the spatial layout, and greatly improves the compactness of the component arrangement, providing more assembly space for the individual battery cells 200, thereby increasing the energy density of the battery pack. In summary, this technical solution achieves a balance between high-efficiency heat dissipation and high energy density by optimizing the heat dissipation path and space utilization of the circuit component 20, effectively improving the overall performance and market competitiveness of the battery pack.

[0024] This embodiment proposes an improved battery pack structure 100, focusing on optimizing the heat dissipation path of the circuit assembly 20. Specifically, a heat-conducting element 30 is disposed in the receiving cavity 101 and thermally connected to the circuit assembly 20. Simultaneously, the other end of the heat-conducting element 30 is directly connected to the portion of the housing 10 where the heat sink 12 is located. This structural design allows the heat generated by the circuit assembly 20 during operation to be efficiently and quickly transferred to the heat sink 12 of the housing 10 via the heat-conducting element 30. Because the heat-conducting element 30 is directly connected to the heat sink 12 of the housing 10, the heat transfer path is greatly shortened, reducing heat loss and delay during the transfer process. The heat sink 12 outside the housing 10, due to its large contact area with the air, can promptly dissipate heat into the external airflow, effectively cooling the circuit assembly 20 and ensuring the safety and reliability of the battery pack during operation.

[0025] This technical solution addresses the problems of long heat dissipation paths, low heat transfer efficiency, and poor heat dissipation in existing technologies for the circuit component 20. By directly connecting the heat-conducting component 30 to the portion of the housing 10 equipped with the heat sink 12, the path of heat conduction from the circuit component 20 to the heat sink 12 is significantly shortened. This reduces heat loss during the transfer process, improves heat transfer efficiency, and allows the heat generated by the circuit component 20 during operation to be dissipated more quickly, significantly improving the overall heat dissipation effect. Through the above optimized design, the performance of the circuit component 20 is effectively prevented from being affected or malfunctioning due to excessive temperature, improving the safety and reliability of the battery pack. At the same time, shortening the heat dissipation path also reduces the thermal impact on other structural components, further ensuring the stability of the battery pack structure. In summary, this technical solution solves the technical problem of poor heat dissipation of the circuit component 20 by optimizing the connection method between the heat-conducting component 30 and the heat sink 12, achieving a highly efficient heat dissipation effect.

[0026] This embodiment provides an optimized battery box heat dissipation structure, specifically including a box body 10, an outer wall of the box body 10 equipped with heat sinks 12, a circuit assembly 20, and a heat-conducting component 30. The heat-conducting component 30 is disposed within the receiving cavity 101 of the battery box, with one end thermally connected to the circuit assembly 20 for efficient heat transfer during operation, and the other end directly connected to the portion of the box body 10 equipped with the heat sink 12. To further improve heat transfer efficiency and heat dissipation effect, this technical solution limits the heights of the heat-conducting component 30 and the heat sink 12: the height of the heat-conducting component 30 is D1, and the height of the heat sink 12 is D2, satisfying the relationship D1≤D2≤2D1. This structural design ensures that the heat-conducting component 30 can fully transfer the heat from the circuit assembly 20 to the heat sink 12 area, while also ensuring that the heat sink 12 has sufficient heat-receiving area for efficient heat dissipation. By limiting the height of the heat sink 12 to be no less than the height of the heat conductor 30, heat can be prevented from failing to dissipate in time due to insufficient coverage area after reaching the heat sink 12, thus improving the integrity of heat transfer. Simultaneously, limiting the height of the heat sink 12 to no more than twice the height of the heat conductor 30 avoids structural redundancy and material waste caused by an excessively tall heat sink 12, and also ensures that heat can be evenly diffused within the heat sink 12 and efficiently exchanged with the air, further improving heat dissipation efficiency. Furthermore, this highly matched structure makes the battery box more compact, helping to improve space utilization and energy density, and avoiding problems such as increased volume and performance degradation caused by unreasonable structural design.

[0027] This technical solution effectively solves the technical problems in the prior art, such as low heat transfer efficiency, low utilization rate of heat sink 12, and non-compact structure caused by unreasonable height matching, by limiting the height ratio of the heat-conducting component 30 and the heat sink 12. Specifically, the reasonable matching of the heights of the heat-conducting component 30 and the heat sink 12 ensures that the heat transferred by the heat-conducting component 30 can be fully received and utilized by the heat sink 12, significantly improving the heat transfer efficiency from the circuit component 20 to the external air and effectively preventing excessive heat loss or dissipation in the transfer path. In addition, the upper limit setting of the height of the heat sink 12 avoids material waste and structural redundancy caused by ineffective height increases, ensuring that heat can be evenly diffused throughout the entire heat sink 12 area, thereby improving the heat exchange efficiency between the heat sink 12 and the air and achieving rapid cooling. Through this structural design, not only is the heat dissipation performance of the battery box significantly improved, the operating temperature of the circuit component 20 and the battery reduced, and their stable operation under high load or high temperature environments ensured, but the structural compactness and space utilization of the battery box are also optimized, which helps to improve the overall energy density. In summary, this technical solution achieves efficient heat conduction and diffusion by scientifically defining the height relationship between the heat-conducting component 30 and the heat sink 12, thereby improving heat dissipation performance, optimizing structural layout, and ensuring the safe and reliable operation of the system.

[0028] This embodiment relates to an improved heat dissipation structure. The structure includes a plurality of heat sinks 12 spaced apart along a first direction (e.g., the length direction of the device). Air can enter the space between the heat sinks 12 along the length direction of the heat sinks 12 and flow along that direction to carry away heat. To further optimize heat dissipation performance, at least some of the heat sinks 12 are provided with clearance grooves 14, and the length of these clearance grooves 14 gradually decreases along the first direction. The plurality of clearance grooves 14 together form a gradually narrowing opening structure, allowing air to enter the space between the heat sinks 12 more smoothly along the first direction and then flow along the length direction of the heat sinks 12, effectively carrying away heat.

[0029] In practical applications, if the heat sinks 12 are not specially designed, the airflow channels can easily be obstructed, leading to poor airflow between the heat sinks 12 and reduced heat dissipation efficiency. This technical solution addresses this by designing clearance grooves 14 on some of the heat sinks 12, with the length of the clearance grooves 14 gradually decreasing in the first direction, forming a funnel-shaped converging opening structure. This structural design allows air to enter the space between the heat sinks 12 more easily in the first direction, reducing airflow resistance and increasing airflow. Simultaneously, the air can flow fully along the length of the heat sinks 12, forming a larger contact area with the surface of the heat sinks 12, thereby carrying away more heat. The gradual reduction in the length of the clearance grooves 14 also allows for the rational distribution of airflow between each heat sink 12 according to the heat dissipation requirements and airflow distribution at different locations, ensuring overall heat dissipation uniformity and efficiency.

[0030] This technical solution cleverly solves the technical problems of obstructed airflow, insufficient air volume between heat sinks 12, and low heat dissipation efficiency in traditional heat sink 12 structures by setting a clearance groove 14 on the heat sink 12 and gradually decreasing the length of the clearance groove 14 along the first direction to form a gradually narrowing opening structure. Specifically, this solution optimizes the structural design of the air inlet, allowing more air to smoothly enter between the heat sinks 12 and flow along the length of the heat sink 12. This not only greatly increases the amount of air entering between the heat sinks 12 but also improves the contact efficiency between the air and the surface of the heat sink 12, effectively removing more heat and significantly improving the overall heat dissipation effect. At the same time, the decreasing length design of the clearance groove 14 ensures the rationality of airflow distribution and avoids uneven heat dissipation due to insufficient air supply to some heat sinks 12. In summary, this technical solution optimizes the airflow path, improves heat dissipation efficiency, enhances the thermal stability and reliability of the equipment, and provides a more efficient and reliable heat dissipation solution for high-performance electronic equipment.

[0031] This embodiment relates to a heat dissipation assembly with an optimized air intake structure. The heat dissipation assembly includes a plurality of heat sinks 12 spaced apart along a first direction. Some of the heat sinks 12 are provided with clearance grooves 14 to allow air to enter the space between the heat sinks 12 along the first direction and flow between the heat sinks 12 to carry away heat. Furthermore, this technical solution provides a rounded corner 16 structure at the end of the clearance groove 14 formed by the heat sink 12. Specifically, the end of the clearance groove 14 is changed from an acute angle or right angle structure to a rounded transition structure with a certain radius (i.e., rounded corner 16), and its curvature can be designed and adjusted according to actual needs.

[0032] In traditional heat sink 12 structures, the ends of the clearance slots 14 are often designed with right angles or acute angles. This structure creates obvious boundaries and abrupt changes when air flows in, leading to increased airflow disturbance at the intake end, increased airflow separation and vortices, thereby increasing airflow resistance and reducing the efficiency of air entering the space between the heat sinks 12. To address this issue, this embodiment innovatively designs rounded corners 16 at the ends of the clearance slots 14. The smooth transition of the rounded corners 16 can significantly reduce airflow separation, reduce local airflow resistance, and allow air to enter the space between the heat sinks 12 more smoothly along the first direction. This structure not only optimizes the airflow path and improves hydrodynamic performance, but also extends the service life of the heat sinks 12 and related components, and reduces mechanical stress concentration caused by airflow impact.

[0033] By incorporating a rounded corner 16 structure at the end of the clearance groove 14, this technical solution effectively solves the technical problems in the prior art, such as significant airflow obstruction, substantial airflow disturbance, and low airflow efficiency when air enters the space between the heat sinks 12 along the first direction. The rounded corner 16 design significantly reduces the local resistance at the air inlet, allowing air to enter the space between the heat sinks 12 more smoothly, reducing eddies and airflow separation, and increasing airflow. This not only increases the amount of air entering the space between the heat sinks 12 and improves the contact efficiency between the air and the surface of the heat sinks 12, but also further enhances the overall heat dissipation performance, achieving a more efficient heat removal effect. Furthermore, the application of the rounded corner 16 structure also helps prevent structural fatigue or damage caused by sharp edges, improving the structural reliability of the heat dissipation component. In summary, this technical solution, by optimizing the end structure of the clearance groove 14, achieves the technical effects of reduced airflow resistance and improved heat dissipation performance, enhancing the thermal management capabilities and service life of electronic equipment or related application systems.

[0034] This embodiment relates to a compact heat dissipation device, including a housing 10 and a plurality of heat sinks 12. Specifically, a receiving groove 102 is provided on the outer peripheral surface of the housing 10, and the receiving groove 102 is a partially hollowed-out structure of the housing 10. The plurality of heat sinks 12 are arranged at intervals inside the receiving groove 102 along a first direction. The depth of the receiving groove 102 is adapted to the thickness of the heat sinks 12, so that the heat sinks 12 can be embedded in the receiving groove 102 of the housing 10.

[0035] In traditional heat dissipation devices, heat sinks 12 are typically mounted directly on the outer surface of the housing 10. While this structure improves heat dissipation, it increases the overall height of the housing 10, hindering compact design and impacting size control and space utilization. This technical solution addresses this by creating a receiving groove 102 on the outer periphery of the housing 10, partially hollowing out the housing 10, and placing multiple heat sinks 12 spaced apart along a first direction within the receiving groove 102. Since the receiving groove 102 can accommodate the thickness of the heat sinks 12, the embedded heat sinks 12 will not exceed the original height profile of the housing 10, thus ensuring that the overall height of the housing 10 does not decrease (i.e., the housing 10 will not become taller due to the addition of heat sinks 12).

[0036] This technical solution cleverly solves the technical problem of increased overall height of the enclosure 10 due to the installation of heat sinks 12 by partially hollowing out the outer periphery of the enclosure 10 to create a receiving groove 102 and embedding multiple heat sinks 12 into the receiving groove 102. In this way, the placement of the heat sinks 12 does not affect the original height of the enclosure 10, achieving a compact structure and efficient use of space, making it particularly suitable for electronic devices or integrated devices with strict requirements on size and shape. At the same time, the closer fit between the heat sinks 12 and the enclosure 10 helps improve heat conduction efficiency and further enhances heat dissipation performance. In summary, this technical solution achieves efficient arrangement of multiple heat sinks 12 without increasing the overall height of the enclosure 10, improving heat dissipation and meeting the dual requirements of modern equipment for heat dissipation performance and structural compactness.

[0037] This embodiment relates to a heat dissipation structure resistant to external impact. Specifically, a receiving groove 102 is provided on the outer peripheral surface of the housing 10, the receiving groove 102 being used to install multiple heat sinks 12. The height of each heat sink 12 is designed to be less than or equal to the depth of the receiving groove 102, ensuring that the heat sink 12 is completely located within the receiving groove 102 and does not extend beyond the outer edge of the receiving groove 102. During installation, the heat sink 12 is inserted into the receiving groove 102, with its top flush with or below the opening of the receiving groove 102, thereby forming a protective structural layout. The heat sink 12 can also be integrally formed with the housing 10, such as by die casting, welding, etc.

[0038] This technical solution solves the problem in existing heat dissipation structures where the heat sink 12 is exposed to the outside and is easily deformed by impacts from external objects. In traditional structures, the heat sink 12 protrudes from the surface of the housing 10, and is easily bent or deformed by external forces during daily handling, collisions, or use. This affects the contact area between the heat sink 12 and the air, leading to a decrease in heat dissipation efficiency and even affecting the normal operation of the equipment.

[0039] By adopting the solution of this embodiment, since the height of the heat sink 12 is less than or equal to the depth of the receiving groove 102, the heat sink 12 is completely contained and protected within the receiving groove 102. External objects cannot directly impact the heat sink 12, effectively avoiding deformation and damage caused by impact or external force. This not only extends the service life of the heat sink 12 but also ensures that the heat sink 12 always maintains a good structural shape, thereby stably and efficiently performing its heat dissipation function. In summary, this technical solution, through structural optimization, achieves protection for the heat sink 12, improves the reliability and safety of the equipment, and significantly enhances the actual performance of the heat dissipation device.

[0040] Please see Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of the box 10 provided in this embodiment of the utility model.

[0041] This embodiment provides an improved heat sink 12 with a gradually decreasing height from both ends towards the interior. Specifically, the ends of the heat sink 12 are relatively high, gradually decreasing in height towards the middle (interior), ultimately forming a profile structure that is low in the middle and high at both ends. In practical applications, this heat sink 12 can be installed in the receiving slot 102 of an electronic device housing. Multiple heat sinks 12 are arranged parallel to each other in a certain direction, and the above structural design improves heat dissipation performance. The higher ends of the heat sink 12 effectively enhance the structural strength of the ends, preventing deformation or damage during handling, installation, or use under external forces. The gradually decreasing design in the middle not only optimizes the airflow path between the heat sinks 12 but also creates richer and more favorable airflow guidance and disturbance on the surface of the heat sink 12, allowing the air to contact the surface of the heat sink 12 more fully, thereby carrying away more heat and improving heat exchange efficiency.

[0042] This technical solution effectively improves upon the technical problems of traditional heat sinks 12 having a uniform height and a single airflow path, which easily leads to localized heat accumulation and limited overall heat dissipation efficiency. Through a special structural design where the height of the heat sink 12 gradually decreases from both ends to the middle, natural airflow guidance and disturbance effects are created between the heat sinks 12, avoiding air stagnation in localized areas and effectively improving the overall heat exchange capacity of the heat sink 12. Furthermore, the increased height at both ends of the heat sink 12 not only enhances its structural strength but also reduces the risk of deformation due to external forces, thereby extending the service life of the heat sink 12. In summary, this embodiment, through an innovative design of the height of the heat sink 12, solves the problems of uneven heat dissipation, low efficiency, and structural fragility in traditional heat dissipation structures, achieving the technical effects of improved heat dissipation efficiency, enhanced structural strength, and extended service life.

[0043] Please see Figure 4 As shown, Figure 4This is a schematic diagram of the structure of the box 10 provided in this embodiment of the utility model.

[0044] This embodiment provides an improved heat dissipation structure. The receiving groove 102 has a through hole 103 extending through the housing 10 on its side between the heat sinks 12. The through hole 103 extends along the length of the heat sinks 12, forming an airflow channel from the outside of the housing 10 to the space between the heat sinks 12. In practical applications, external air can directly enter the space between the heat sinks 12 through the through hole 103 and flow along the length of the heat sinks 12. This structural design allows air to efficiently enter and flow through the gaps between the heat sinks 12, effectively carrying away the heat generated by the heat sinks 12 and achieving efficient heat dissipation.

[0045] This technical solution innovatively improves upon the limitations of traditional heat dissipation structures, such as restricted airflow paths, poor airflow between heat sinks 12, and limited heat dissipation efficiency. By creating through holes 103 on the side of the receiving slot 102 that penetrate the housing 10 and extend along the length of the heat sink 12, external cold air can directly and quickly enter between the heat sinks 12, greatly improving airflow and efficiency, avoiding localized airflow dead zones and heat accumulation, and promoting airflow along the length of the heat sink 12, thereby increasing the rate of heat removal and overall heat dissipation efficiency. Through the above structural design, this technical solution effectively solves the problems of obstructed airflow and uneven heat dissipation between the heat sinks 12 in existing technologies, achieving efficient airflow, uniform heat dissipation, and improved overall heat dissipation performance.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0047] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0048] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery case structure characterized by comprising: The battery box structure comprises: a box body provided with a containing cavity, and a periphery of the box body is provided with cooling fins; a circuit assembly arranged in the containing cavity and connected with the box body; and a heat-conducting member arranged in the containing cavity and connected with the circuit assembly and the box body.

2. The battery case structure according to claim 1, characterized by The heat-conducting member is connected with the part of the box body provided with the cooling fins.

3. The battery case structure according to claim 2, characterized by The height of the heat-conducting member is D1, and the height of the cooling fins is D2, and D1≤D2≤2D1.

4. The battery case structure according to claim 1, characterized by The number of the cooling fins is multiple, and the multiple cooling fins are arranged at intervals along a first direction, at least part of the cooling fins is provided with a relief groove, and the length of the relief groove gradually decreases along the first direction.

5. The battery case structure according to claim 4, characterized by An end of the cooling fin forming the relief groove is provided with a rounded corner.

6. The battery case structure according to claim 1, wherein The periphery of the box body is provided with a containing groove, the number of the cooling fins is multiple, and the multiple cooling fins are arranged at intervals along a first direction in the containing groove.

7. The battery case structure according to claim 6, characterized by The cooling fins do not exceed the containing groove.

8. The battery case structure according to claim 6, wherein The height of the cooling fins gradually decreases from both ends to the inside of the cooling fins.

9. The battery case structure according to claim 6, wherein The side between the cooling fins is provided with a through hole penetrating through the box body.

10. A battery pack, characterized by, The battery pack comprises: a single battery and the battery box structure according to any one of claims 1 to 9, the single battery is arranged in the battery box structure, and the circuit assembly is connected with the single battery.

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