A quick heat dissipation lithium battery pack shell

Abstract

The utility model discloses a quick heat dissipation lithium battery pack shell, including shell and lid, be provided with horizontal baffle in the shell, the below of horizontal baffle is established with first air cavity, second air cavity and third air cavity, the one side of shell is established with three air inlets, three air inlets respectively with first air cavity, second air cavity and third air cavity one -to -one correspondence intercommunication, every air inlet department is independently provided with fan, the utility model discloses through the cooperation of horizontal through -hole and vertical through -hole on first epoxy board and second epoxy board, make every electric core work the heat that produces can be by fan drive and send the outside air into the cavity, through the intercommunication of horizontal baffle and the intercommunication of air outlet, produce airflow in vertical through -hole, horizontal through -hole will the heat that generates around electric core inhale and through vertical through -hole and timely discharge, form three -dimensional ventilation network, effectively cover all electric core around the clearance, prevent internal electric core uneven heat dissipation, improve the heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a fast heat dissipation lithium battery pack casing. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as the positive / negative electrode material and a non-aqueous electrolyte solution. Lithium-ion batteries can be broadly classified into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.

[0003] A lithium battery pack is composed of multiple cells of the same capacity connected in series with their positive and negative electrodes. During operation, the cells generate heat. Traditional lithium battery packs usually have an external heat dissipation structure for heat dissipation. However, external heat dissipation is difficult to cover all the cells inside the battery pack, resulting in local overheating. The heat from the cells inside the lithium battery pack needs to be conducted to the outside through a multi-layer structure, which delays the heat dissipation response. Therefore, a fast-heat dissipation lithium battery pack casing is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide a fast-heat dissipation lithium battery pack housing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fast-heat dissipation lithium battery pack housing, comprising a housing and a cover, wherein a horizontal partition is provided inside the housing, and a first air cavity, a second air cavity, and a third air cavity are provided below the horizontal partition. Three air inlets are provided on one side of the housing, and the three air inlets are respectively connected to the first air cavity, the second air cavity, and the third air cavity. Each air inlet is independently provided with a fan. A first epoxy plate and several second epoxy plates are provided on the horizontal partition. The lithium battery cells are placed between two adjacent second epoxy plates to form a modular installation structure. Vertical and horizontal through holes are provided on both the first and second epoxy plates to form a three-dimensional ventilation network. The vertical through holes are connected to the interior of the first air cavity, the second air cavity, and the third air cavity. An air outlet is provided on the cover.

[0006] Preferably, the first air cavity, the second air cavity, and the third air cavity are separated by two vertical partitions. The vertical partitions are vertically connected to the inner walls of the top and bottom of the first air cavity, the second air cavity, and the third air cavity, and horizontally connected to the inner walls of the two sides of the first air cavity, the second air cavity, and the third air cavity.

[0007] Preferably, the transverse partition has a plurality of vent holes and ventilation holes, the vent holes corresponding to the lithium battery cell accommodating area between two adjacent second epoxy plates, and the ventilation holes corresponding to the vertical through holes on the first epoxy plate and the second epoxy plate to form a continuous air duct.

[0008] Preferably, each of the air inlets is provided with a removable filter screen on its outer side, and the mesh diameter of the filter screen is no greater than 1 mm.

[0009] Preferably, the air outlet is provided with a rectangular frame, and several blades are rotatably connected within the frame via a pivot. All blades are arranged horizontally at equal intervals, and the pivot point is set at the same end of the blade, forming a guide structure with a uniformly adjustable angle.

[0010] Preferably, the frame is further provided with a number of support rods, each support rod being disposed below a page, and the gap between the support rod and the page is 0.5-1mm, which is used to limit the maximum downward angle of the page.

[0011] The beneficial effects of this utility model are: In this invention, the combination of horizontal and vertical through holes on the first and second epoxy plates allows the heat generated by each battery cell during operation to be drawn into the cavity by a fan. Through the connection of the horizontal partition and the air outlet, airflow is generated in the vertical through holes. The horizontal through holes draw in the heat generated around the battery cell and discharge it in time through the vertical through holes, forming a three-dimensional ventilation network that effectively covers all the gaps around the battery cells, prevents uneven heat dissipation of the internal battery cells, and improves heat dissipation efficiency.

[0012] In this invention, the independent arrangement of the first air cavity, the second air cavity, and the third air cavity avoids the problem of decreasing air volume, further ensuring heat dissipation efficiency and achieving rapid heat dissipation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a fast heat dissipation lithium battery pack housing proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of a fast heat dissipation lithium battery pack housing proposed in this utility model. Figure 3 This is a side view cross-sectional structural diagram of a fast heat dissipation lithium battery pack housing proposed in this utility model; Figure 4 This is a top-view cross-sectional view of the vertical partition of a fast-heat dissipation lithium battery pack housing proposed in this utility model. Figure 5 This is a front cross-sectional view of the first epoxy plate of a fast heat dissipation lithium battery pack housing proposed in this utility model. Figure 6 This is a side cross-sectional view of the second epoxy plate structure of a fast heat dissipation lithium battery pack housing proposed in this utility model. Figure 7 This is a front cross-sectional view of the cover structure of a fast heat dissipation lithium battery pack housing proposed in this utility model. Figure 8 This utility model proposes a fast heat dissipation lithium battery pack casing. Figure 7 Enlarged structural diagram at point A in the middle.

[0014] In the diagram: 1. Shell; 2. Cover; 3. Horizontal partition; 4. First air chamber; 5. Second air chamber; 6. Third air chamber; 7. Air inlet; 8. Fan; 9. First epoxy board; 10. Second epoxy board; 11. Vertical through hole; 12. Horizontal through hole; 13. Air outlet; 14. Vertical partition; 15. Ventilation hole; 16. Ventilation hole; 17. Filter screen; 18. Frame; 19. Blade; 20. Support rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-8 A fast-heat dissipation lithium battery pack housing includes a housing 1 and a cover 2. A horizontal partition 3 is provided inside the housing 1. A first air cavity 4, a second air cavity 5, and a third air cavity 6 are provided below the horizontal partition 3. Three air inlets 7 are provided on one side of the housing 1. The three air inlets 7 are respectively connected to the first air cavity 4, the second air cavity 5, and the third air cavity 6. Each air inlet 7 is independently provided with a fan 8. A first epoxy plate 9 and several second epoxy plates 10 are provided on the horizontal partition 3. The lithium battery cells are placed between two adjacent second epoxy plates 10 to form a modular installation structure. The first epoxy plate 9 and the second epoxy plate 10 are provided with through vertical holes 11 and horizontal holes 12 to form a three-dimensional ventilation network. The vertical holes 11 are connected to the interior of the first air cavity 4, the second air cavity 5, and the third air cavity 6. An air outlet 13 is provided on the cover 2.

[0017] The cooperation of the horizontal through holes 11 and vertical through holes 12 on the first epoxy board 9 and the second epoxy board 10 allows the heat generated by each battery cell during operation to be driven by the fan 8 to send outside air into the cavity. Through the connection of the horizontal partition 3 and the air outlet 13, airflow is generated in the vertical through holes 11. The horizontal through holes 12 draw in the heat generated around the battery cell and discharge it in time through the vertical through holes 11, forming a three-dimensional ventilation network that effectively covers all the gaps around the battery cells, prevents uneven heat dissipation of the internal battery cells, and improves heat dissipation efficiency. The independent setting of the first air cavity 4, the second air cavity 5 and the third air cavity 6 avoids the problem of decreasing air volume, further ensuring heat dissipation efficiency and achieving rapid heat dissipation effect.

[0018] Specifically, in this embodiment, the first air cavity 4, the second air cavity 5, and the third air cavity 6 are separated by two vertical partitions 14. The vertical partitions 14 are vertically connected to the inner walls of the top and bottom of the first air cavity 4, the second air cavity 5, and the third air cavity 6, and are also horizontally connected to the inner walls of the two sides of the first air cavity 4, the second air cavity 5, and the third air cavity 6, so as to realize zoned air supply and ensure sufficient air volume.

[0019] Specifically, in this embodiment, the transverse partition 3 is provided with a plurality of vent holes 15 and ventilation holes 16. The vent holes 15 correspond to the lithium battery cell accommodating area between two adjacent second epoxy plates 10. The ventilation holes 16 correspond to the positions of the vertical through holes 11 on the first epoxy plate 9 and the second epoxy plate 10 to form a continuous air channel, which enhances the airflow through the gap between the cells. In addition, the vent holes 15 can discharge the heat generated at the bottom of the cell through the airflow effect.

[0020] Specifically, in this embodiment, each air inlet 7 is provided with a removable filter screen 17 on its outer side. The mesh diameter of the filter screen 17 is no more than 1mm. The filter screen 17 extends the life of the fan and prevents large particles of impurities from entering and causing blockage of the internal holes.

[0021] Specifically, in this embodiment, a rectangular frame 18 is provided at the air outlet 13. Several blades 19 are rotatably connected within the frame 18 via a pivot. All blades 19 are arranged horizontally at equal intervals, and the pivot point is set at the same end of the blades 19, forming a guide structure with a uniformly adjustable angle. Under the action of wind, the blades 19 open and rotate, and when closed, they seal the air outlet 13, thus having a certain dustproof effect.

[0022] Specifically, in this embodiment, a number of support rods 20 are also provided inside the frame 18. Each support rod 20 is correspondingly located below a page plate 19. The gap between the support rod 20 and the page plate 19 is 0.5-1mm, which is used to limit the maximum downward angle of the page plate 19.

[0023] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A fast-heat dissipation lithium battery pack casing, comprising a casing (1) and a cover (2), characterized in that: The housing (1) is provided with a transverse partition (3). A first air chamber (4), a second air chamber (5), and a third air chamber (6) are provided below the transverse partition (3). Three air inlets (7) are provided on one side of the housing (1). The three air inlets (7) are respectively connected to the first air chamber (4), the second air chamber (5), and the third air chamber (6). Each air inlet (7) is independently provided with a fan (8). A first epoxy board is provided on the transverse partition (3). 9) and several second epoxy boards (10), the lithium battery cells are placed between two adjacent second epoxy boards (10) to form a modular installation structure. The first epoxy board (9) and the second epoxy board (10) are provided with through vertical through holes (11) and horizontal through holes (12) to form a three-dimensional ventilation network. The vertical through holes (11) are connected to the interior of the first air cavity (4), the second air cavity (5) and the third air cavity (6). The cover (2) is provided with an air outlet (13).

2. The fast heat dissipation lithium battery pack casing according to claim 1, characterized in that: The first air cavity (4), the second air cavity (5) and the third air cavity (6) are separated by two vertical partitions (14). The vertical partitions (14) are vertically connected to the inner walls of the top and bottom of the first air cavity (4), the second air cavity (5) and the third air cavity (6), and horizontally connected to the inner walls of the two sides of the first air cavity (4), the second air cavity (5) and the third air cavity (6).

3. The fast heat dissipation lithium battery pack casing according to claim 1, characterized in that: The transverse partition (3) has several ventilation holes (15) and ventilation holes (16). The ventilation holes (15) correspond to the lithium battery cell accommodating area between two adjacent second epoxy plates (10), and the ventilation holes (16) correspond to the vertical through holes (11) on the first epoxy plate (9) and the second epoxy plate (10) to form a continuous air duct.

4. The fast heat dissipation lithium battery pack casing according to claim 1, characterized in that: Each of the air inlets (7) is provided with a removable filter screen (17) on its outer side, and the mesh diameter of the filter screen (17) is no greater than 1 mm.

5. The fast heat dissipation lithium battery pack casing according to claim 1, characterized in that: A rectangular frame (18) is provided at the air outlet (13). Several blades (19) are rotatably connected inside the frame (18) via a rotating shaft. All blades (19) are arranged horizontally at equal intervals and the rotation fulcrum is set at the same end of the blades (19), forming a guide structure with a uniformly adjustable angle.

6. The fast heat dissipation lithium battery pack casing according to claim 5, characterized in that: The frame (18) is also provided with a number of support rods (20), each support rod (20) is provided below a page plate (19), and the gap between the support rod (20) and the page plate (19) is 0.5-1mm, which is used to limit the maximum downward angle of the page plate (19).

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