Battery pack heat dissipation structure

Abstract

The utility model discloses a battery pack heat dissipation structure, and relates to the technical field of battery heat dissipation, the heat dissipation effect of a battery pack is improved, the battery pack heat dissipation structure comprises a fixed frame and a plurality of battery units arranged and installed in the fixed frame, the fixed frame comprises: a holder used for accommodating the plurality of battery units and comprising a bottom plate and long side plates fixed on two sides of the bottom plate; the anti-falling part is arranged at the upper end of the holder and is used for preventing the plurality of battery units from being separated from the holder; the heat dissipation partition plates are arranged between the adjacent battery power supplies and are perpendicular to the bottom plate, and heat dissipation holes penetrating through the two ends of the heat dissipation partition plates are formed in the heat dissipation partition plates in the vertical direction; first through holes corresponding to the heat dissipation holes are formed in the bottom plate. The heat dissipation performance of the battery pack is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of battery heat dissipation technology, and in particular to a battery pack heat dissipation structure. Background Technology

[0002] Current power battery systems generally adopt a modular integrated design. Its basic structure is as follows: several battery packs are connected in series and parallel to form a battery box assembly, thereby improving the energy density at the system level. Specifically, the composition structure of a single battery pack is as follows: multiple battery cells are arranged linearly in the lateral direction (X-axis direction) under the constraint of a fixed bracket to form a power output unit with a regular geometric shape.

[0003] However, during actual operation of the battery pack, the battery cells generate a significant amount of heat due to charging and discharging operations. Because existing assembly and fixing methods have shortcomings in heat dissipation design, the heat generated by the battery cells cannot be dissipated effectively and promptly. Prolonged exposure to high temperatures gradually degrades the performance of the battery cells, thus affecting the lifespan of the entire battery pack and increasing the operating costs and safety risks of the battery pack. Utility Model Content

[0004] To improve the heat dissipation of the battery pack, this application provides a battery pack heat dissipation structure.

[0005] This application provides a battery pack heat dissipation structure, which adopts the following technical solution:

[0006] A battery pack heat dissipation structure includes a fixed frame and a plurality of battery cells arranged and installed in the fixed frame. The fixed frame includes: a retainer for accommodating the plurality of battery cells, including a base plate and long side plates fixed on both sides of the base plate; an anti-detachment member installed at the upper end of the retainer to prevent the plurality of battery cells from detaching from the retainer; and a heat dissipation partition disposed between adjacent battery cells and perpendicular to the base plate, wherein the heat dissipation partition has heat dissipation holes penetrating both ends of the heat dissipation partition along the vertical direction; wherein the base plate has a first through hole corresponding to the heat dissipation hole.

[0007] By adopting the above technical solutions, the cage provides a stable space for the battery cells, ensuring that the battery cells are arranged in an orderly manner; the anti-detachment component effectively prevents the battery cells from detaching, ensuring the stability of the battery pack structure; the heat dissipation partition separates the battery cells and forms a heat dissipation channel, which, combined with the through holes in the bottom plate, accelerates heat convection, improves the heat dissipation effect, reduces the risk of battery cell performance degradation due to high temperature, and extends the service life of the battery pack.

[0008] Optionally, the fixing frame may also include a protective plate disposed within the retainer, which surrounds the multiple battery cells.

[0009] By adopting the above technical solution, the protective plate can protect the battery cell, prevent external objects from directly impacting the battery cell, avoid physical damage to the battery cell, and improve the safety and reliability of the battery pack.

[0010] Optionally, the long side plate is provided with a number of second through holes.

[0011] By adopting the above technical solution, the several second through holes opened on the long side plate further increase the heat dissipation capacity of the battery pack.

[0012] Optionally, the anti-detachment component includes an anti-detachment rod and a connecting plate. Two connecting plates are provided, and the two connecting plates are fixedly connected to both ends of the long side plate by bolts. The anti-detachment rod has connecting pieces extending vertically from both ends, and the two connecting pieces are fixedly connected to the two connecting plates by bolts.

[0013] By adopting the above technical solution, the anti-detachment component adopts the structure of an anti-detachment rod and a connecting plate, which is connected by bolts. The structure is simple, easy to install and firmly connected, which can reliably fix the battery unit, and at the same time facilitates later maintenance and disassembly.

[0014] Optionally, the fixed frame further includes multiple support bases, each support base having a mounting slot for inserting a battery unit; the support base is placed on a base plate, and one end of the battery unit is placed in the mounting slot.

[0015] By adopting the above technical solution, the support base provides stable support for the battery unit, ensuring the accurate installation position of the battery unit, preventing the battery unit from shaking during operation, and facilitating the installation and removal of the battery unit.

[0016] Optionally, one end of the heat dissipation baffle is supported on two adjacent support bases, forming a ventilation space between it and the base plate.

[0017] By adopting the above technical solution, one end of the heat dissipation plate is supported on two adjacent support bases to form a ventilation space with the bottom plate, which increases the air circulation channel at the bottom of the battery cell, further promotes heat dissipation, and improves heat dissipation efficiency.

[0018] Optionally, a gap is left between the heat dissipation baffle and the anti-detachment rod.

[0019] By adopting the above technical solution, a gap is left between the heat dissipation partition and the anti-detachment rod, which avoids interference between the heat dissipation partition and the anti-detachment rod and ensures that air can flow smoothly inside the battery pack.

[0020] Optionally, the fixing frame further includes an upper protective plate for mounting on the upper end of the battery cell and a lower protective plate for mounting on the bottom plate.

[0021] By adopting the above technical solutions, the upper and lower protective plates can protect the upper and lower ends of the battery cells, thereby improving the overall protection performance of the battery pack.

[0022] In summary, this application includes at least one of the following beneficial effects:

[0023] 1. Significantly improves heat dissipation performance: By setting a heat dissipation baffle with heat dissipation holes in the fixed frame and forming a heat dissipation channel with the base plate, the air circulation path is optimized, the heat dissipation inside the battery pack is accelerated, the risk of performance degradation of battery cells due to high temperature is effectively reduced, and the service life of the battery pack is extended.

[0024] 2. Enhanced battery pack safety protection: A protective plate is installed inside the cage to surround the battery cell, and an upper protective plate and a lower protective plate are respectively installed at the top and bottom of the battery cell, which improves the safety and reliability of the battery pack and reduces safety risks during use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0026] Figure 2 This is an exploded illustration of an embodiment of this application. Figure 1 ;

[0027] Figure 3 This is an exploded illustration of an embodiment of this application. Figure 2 ;

[0028] Figure 4 This is a schematic diagram illustrating the connection between the support base and the battery unit in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Fixed frame; 2. Battery unit; 3. Retainer; 4. Base plate; 5. Long side plate; 6. Anti-detachment component; 7. Heat dissipation plate; 8. Connecting plate; 9. Anti-detachment rod; 10. Connecting piece; 11. Heat dissipation hole; 12. First through hole; 13. Second through hole; 14. Third through hole; 15. Upper protective plate; 16. Lower protective plate; 17. Mounting groove; 18. Protective plate; 19. Support base; 20. Limiting plate. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a battery pack heat dissipation structure, referring to... Figure 1 The battery pack includes a fixed frame 1 and multiple battery cells 2 arranged and installed within the fixed frame 1. This battery pack heat dissipation structure is primarily designed to improve heat dissipation during charging and discharging, thereby extending the battery pack's lifespan and reducing operating costs and safety risks.

[0032] Reference Figure 2 The fixing frame 1 includes a retainer 3, an anti-detachment component 6, and a heat dissipation partition 7. The retainer 3 is the basic component of the fixing frame 1, used to accommodate multiple battery cells 2. The retainer 3 includes a base plate 4 and long side plates 5 fixed to both sides of the base plate 4. The base plate 4 and the long side plates 5 are integrally formed, forming an open box-shaped structure. The base plate 4 provides a stable support platform for the battery cells 2, while the four long side plates 5 provide lateral restraint and protection for the battery cells 2.

[0033] The size and shape of the retainer 3 are designed according to the specifications and quantity of the battery cells 2 to ensure that the battery cells 2 can be arranged neatly and orderly within them. In the actual manufacturing process, the retainer 3 can be made of high-strength, corrosion-resistant metal materials, such as aluminum alloy, and processed through stamping, welding and other processes to ensure the strength and stability of its structure.

[0034] Reference Figure 2 , 3 The anti-detachment component 6 is installed on the upper end of the retainer 3. Its main function is to prevent multiple battery cells 2 from detaching from the upper end of the retainer 3, thus ensuring the stability of the battery pack structure.

[0035] Specifically, refer to Figure 2 , 3 The anti-detachment component 6 specifically includes an anti-detachment rod 9 and connecting plates 8. Two connecting plates 8 are provided, and these two connecting plates 8 are fixedly connected to both ends of the long side plate 5 by bolts. Connecting pieces 10 extend vertically from both ends of the anti-detachment rod 9, and the two connecting pieces 10 are then fixedly connected to the two connecting plates 8 by bolts. When it is necessary to disassemble the battery unit 2 for maintenance or replacement, the anti-detachment component 6 can be easily removed simply by loosening the bolts, making the operation convenient.

[0036] To facilitate the installation and positioning of the battery unit and the connecting plate 8, a limiting plate 20 is integrally formed at one end of the base plate 4 along its length, located between the two side support plates. During installation, the connecting plate 8 is mounted against the limiting plate 20, making it easy to locate the bolt connection position. At the same time, it also facilitates the installation and positioning of the battery unit 2 from one side of the retainer 3.

[0037] Reference Figure 3 , 4A heat dissipation partition 7 is disposed between adjacent battery cells 2 and is perpendicular to the base plate 4. The heat dissipation partition 7 has heat dissipation holes 11 extending through both ends vertically. These holes 11 can be circular, square, or other suitable shapes, and their size and number are optimized according to the heat dissipation requirements of the battery pack. Simultaneously, the base plate 4 has a first through hole 12 corresponding to the heat dissipation holes 11. When the battery cell 2 generates heat during operation, the heat is dissipated through the channel formed by the heat dissipation holes 11 on the heat dissipation partition 7 and the first through hole 12 on the base plate 4, accelerating heat dissipation. The heat dissipation partition 7 can be made of a material with good thermal conductivity, such as copper alloy or aluminum alloy, to improve heat conduction efficiency.

[0038] Reference Figure 3 The long side plate 5 of the retainer 3 has several second through holes 13, which further increase the heat dissipation capacity of the battery pack. The shape, size and number of the second through holes 13 can be optimized according to the heat dissipation requirements and structural strength requirements of the battery pack.

[0039] Reference Figure 2 , 3 The fixing frame 1 also includes a protective plate 18 disposed within the retainer 3, enclosing multiple battery units 2; an upper protective plate 15 for mounting the upper part of the battery units 2; and a lower protective plate 16 mounted on the base plate 4. The protective plate 18 protects the battery units 2, preventing direct impact from external objects and avoiding physical damage. The upper protective plate 15 protects the upper part of the battery units 2, and the lower protective plate 16 protects the lower part, improving the overall protection performance of the battery pack. The lower protective plate 16 has a third through hole 14 corresponding to the first through hole 12, ensuring communication between the heat dissipation hole 11 and external air. The anti-detachment rod 9, by pressing the upper protective plate 15, limits the battery units 2 within the retainer 3. The protective plate 18, upper protective plate 15, and lower protective plate 16 can be made of plastic or metal materials with certain strength and toughness.

[0040] Reference Figure 3 , 4The fixed frame 1 also includes multiple support seats 19, each with a mounting slot 17 for inserting the battery unit 2. The support seats 19 are placed on the lower guard plate 16, with one end of the battery unit 2 positioned in the mounting slot 17. The support seats 19 provide stable support for the battery unit 2, ensuring accurate installation and preventing it from shaking during operation. The size and shape of the mounting slots 17 on the support seats 19 are designed according to the specifications of the battery unit 2 to ensure that the battery unit 2 can be securely installed on the support seats 19. In practical applications, the number and position of the support seats 19 are rationally arranged according to the arrangement of the battery units 2 to ensure that each battery unit 2 receives stable support.

[0041] Reference Figure 4 One end of the heat dissipation partition 7 is supported on two adjacent support bases 19, forming a ventilation space between it and the base plate 4, which further increases the airflow channel at the bottom of the battery unit 2 and improves the heat dissipation efficiency.

[0042] In addition, an appropriate gap is left between the heat dissipation partition 7 and the anti-detachment rod 9 to ensure that air can flow smoothly inside the battery pack, which is conducive to heat dissipation.

[0043] The implementation principle of a battery pack heat dissipation structure in this application is as follows:

[0044] During battery pack operation, battery cell 2 generates a significant amount of heat due to charging and discharging operations. This heat is first conducted to the air through the heat dissipation partition 7, and then dissipated to the outside of the battery pack through the heat dissipation holes 11 on the partition 7 and the first through-hole 12 on the base plate 4, forming a flow channel. Simultaneously, the second through-hole 13 on the long side plate 5 further enhances heat dissipation efficiency. Furthermore, the protective plate 18, upper protective plate 15, and lower protective plate 16 provide comprehensive protection for battery cell 2, preventing impact and damage from external objects and ensuring the safe and reliable operation of the battery pack.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A battery pack heat dissipation structure, comprising a fixed frame (1) and a plurality of battery cells (2) arranged and mounted in the fixed frame (1), characterized in that: The fixed frame (1) includes: The retainer (3) is used to accommodate multiple battery cells (2), including a base plate (4) and long side plates (5) fixed on both sides of the base plate (4). An anti-detachment component (6) is installed at the upper end of the retainer (3) to prevent multiple battery cells (2) from detaching from the retainer (3). A heat dissipation partition (7) is disposed between adjacent battery power sources and is perpendicular to the base plate (4). The heat dissipation partition (7) is provided with heat dissipation holes (11) that penetrate both ends of the heat dissipation partition (7) in the vertical direction. The base plate (4) has a first through hole (12) corresponding to the heat dissipation hole (11).

2. The battery pack heat dissipation structure according to claim 1, characterized in that: The fixed frame (1) also includes a protective plate (18) disposed within the retainer (3) and surrounding the multiple battery cells (2).

3. The battery pack heat dissipation structure according to claim 2, characterized in that: The long side plate (5) has several second through holes (13).

4. The battery pack heat dissipation structure according to claim 1, characterized in that: The anti-detachment component (6) includes an anti-detachment rod (9) and a connecting plate (8). There are two connecting plates (8). The two connecting plates (8) are fixedly connected to the two ends of the long side plate (5) by bolts. The two ends of the anti-detachment rod (9) have connecting pieces (10) extending vertically. The two connecting pieces (10) are fixedly connected to the two connecting plates (8) by bolts.

5. The battery pack heat dissipation structure according to claim 1, characterized in that: The fixed frame (1) also includes multiple support seats (19), and the support seats (19) are provided with mounting slots (17) for inserting battery units (2); the support seats (19) are placed on the base plate (4), and one end of the battery unit (2) is placed in the mounting slot (17).

6. The battery pack heat dissipation structure according to claim 5, characterized in that: One end of the heat dissipation baffle (7) is supported on two adjacent support seats (19), forming a ventilation space between it and the base plate (4).

7. The battery pack heat dissipation structure according to claim 4, characterized in that: A gap is left between the heat dissipation baffle (7) and the anti-detachment rod (9).

8. A battery pack heat dissipation structure according to claim 2, characterized in that: The fixed frame (1) also includes an upper guard plate (15) for mounting on the upper end of the battery unit (2) and a lower guard plate (16) mounted on the bottom plate (4).

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