An EPP battery pressure-resistant packaging box

Abstract

This utility model relates to the field of battery transportation and storage technology, and discloses an EPP battery pressure-bearing packaging box, including a lower box body and an upper box body. The upper box body is located above the lower box body. Positioning grooves are provided on both sides of the upper end of the lower box body, and positioning blocks are fixedly connected to both sides of the lower end of the upper box body. The positioning blocks and positioning grooves are engaged. A limiting component is installed inside the upper box body to fix the upper box body onto the lower box body, and a pressing component is also installed inside the upper box body. This utility model achieves a stable connection between the upper and lower box bodies by rotating the limiting component, ensuring that the upper and lower box bodies are not easily separated under external force, greatly improving the reliability and safety of the fixation, thereby effectively protecting the battery. At the same time, the pressing component automatically applies uniform downward pressure to the battery when the upper box body is closed, firmly fixing the battery between the upper and lower box bodies, enhancing the battery's stability and cushioning performance, and improving the overall protection effect.

Description

Technical Field

[0001] This utility model relates to the field of battery transportation and storage technology, specifically to an EPP battery pressure-bearing packaging box. Background Technology

[0002] Batteries, especially lithium-ion batteries, are the core power source for modern electronic products, power tools, and new energy vehicles. Their storage and transportation require extremely high levels of safety and reliability in their packaging. EPP battery pressure-bearing packaging boxes are specialized packaging containers made from EPP material through molding, used to contain, secure, and protect batteries. These boxes utilize the excellent impact resistance, creep resistance, and energy absorption properties of EPP material to provide cushioning protection for the batteries, resisting external impacts such as vibration and drops during transportation. Furthermore, their structural design supports the weight of the batteries and withstands the pressure of upper packaging layers during stacking, ensuring stacking stability and preventing crushing.

[0003] Existing EPP battery pressure-bearing packaging boxes mostly employ simple methods to secure the upper and lower boxes, generally relying on two types of friction: friction generated by the pressure between the inner wall of the box and the outer surface of the battery, and static friction between the upper and lower boxes during docking, such as the insertion blocks and slots. This method of securing the boxes using pure friction inherently suffers from instability. During transport, the upper and lower boxes are prone to loosening or even separating, leading to direct battery exposure and posing a significant risk of short circuits, damage, or even fire. Therefore, those skilled in the art provide an EPP battery pressure-bearing packaging box to address the problems mentioned in the background. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure-bearing packaging box for EPP batteries, which solves the problems mentioned in the background art above.

[0005] This utility model provides the following technical solution: an EPP battery pressure-bearing packaging box, including a lower box body and an upper box body, the upper box body being located above the lower box body, positioning grooves being provided on both sides of the upper end of the lower box body, positioning blocks being fixedly connected to both sides of the lower end of the upper box body, the positioning blocks and positioning grooves engaging with each other, a limiting component for fixing the upper box body to the lower box body being installed inside the upper box body, and a pressing component being installed inside the upper box body.

[0006] As a preferred embodiment of the above technical solution, the limiting component includes two fixing components and a transmission component. The transmission component is mounted on the two fixing components, which are symmetrically arranged. Each fixing component includes a moving groove and two limiting grooves. The moving groove is located on one side of the lower end of the upper box, and the two limiting grooves are symmetrically located on one side of the upper part of the lower box. The two limiting grooves are trapezoidal in shape. A bidirectional screw is rotatably connected to the inner wall of the moving groove, and two moving rods are slidably connected within the moving groove. The bidirectional screw passes through the two moving rods, and both moving rods are threadedly connected to the external part of the bidirectional screw. Limiting blocks are fixedly connected to the lower ends of the two moving rods, and the two limiting blocks are symmetrically arranged. The two limiting blocks respectively engage with the two limiting grooves.

[0007] As a preferred embodiment of the above technical solution, the transmission assembly includes a rotating cavity and two first bevel gears. The rotating cavity is located within the upper housing. The two first bevel gears are respectively fixedly sleeved on the outside of two bidirectional screws, and the two first bevel gears are arranged in a centrally symmetrical manner. A second bevel gear is rotatably connected to the inner wall of each of the two moving slots near the rotating cavity. The two first bevel gears mesh with the two second bevel gears. A transmission rod is rotatably connected to the inner wall of the rotating cavity. The output ends of the two second bevel gears rotatably penetrate the inner walls of the two moving slots, and the output ends of the two second bevel gears are respectively fixedly connected to both ends of the transmission rod. A worm gear is fixedly sleeved at the middle of the outer side of the transmission rod. A worm is rotatably connected to the inner wall of the rotating cavity, and the worm and worm gear mesh with each other. A knob is rotatably connected to the upper end of the upper housing. The output end of the knob penetrates the upper housing and is fixedly connected to the upper end of the worm.

[0008] As a preferred embodiment of the above technical solution, the pressing component includes multiple damping spring buffers, all of which are fixedly connected to the top of the inner wall of the upper box, and the multiple damping spring buffers are distributed in a rectangular array, with a pressing plate fixedly connected to the lower end of the multiple damping spring buffers.

[0009] As a preferred embodiment of the above technical solution, guide grooves are provided at the four corners of the upper box, and guide blocks are fixedly connected at the four corners of the lower box, with the four guide blocks respectively matching the four guide grooves.

[0010] As a preferred embodiment of the above technical solution, multiple reinforcing ribs are fixedly connected to the inner walls of both the lower and upper boxes, and a set of limiting plates are fixedly connected to the inner walls of both moving slots. Each set of limiting plates has two plates, and the two limiting plates are symmetrically arranged. The four limiting plates are respectively rotatably sleeved on the outside of the two bidirectional screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This device, by rotating the knob in the limiting assembly, in conjunction with the worm gear, first bevel gear, and second bevel gear, drives the bidirectional screw to rotate, causing the limiting block to insert into the trapezoidal limiting groove. This achieves a stable connection between the upper and lower boxes, ensuring that the upper and lower boxes are not easily separated under external force, greatly improving the reliability and safety of the fixation, thus effectively protecting the battery. At the same time, the pressing assembly, using multiple damping spring buffers and a pressing plate, automatically applies uniform downward pressure to the battery when the upper box is closed, firmly fixing the battery between the upper and lower boxes, preventing damage to the battery due to shaking or movement during transportation or use, enhancing the battery's stability and buffering performance, and improving the overall protection effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a pressure-bearing packaging box for EPP batteries;

[0014] Figure 2 This is a schematic diagram of the lower and upper box structures of an EPP battery pressure-bearing packaging box.

[0015] Figure 3 This is a schematic diagram of the stacked structure of an EPP battery pressure-bearing packaging box;

[0016] Figure 4 A schematic diagram of the movable slot structure of an EPP battery pressure-bearing packaging box;

[0017] Figure 5 A schematic diagram of the first and second bevel gears in a pressure-bearing packaging box for EPP batteries;

[0018] Figure 6 This is a schematic diagram of the pressure-bearing component structure of an EPP battery pressure-bearing packaging box.

[0019] Legend:

[0020] 1. Lower box body; 2. Upper box body; 3. Positioning groove; 4. Positioning block; 5. Limiting assembly; 501. Moving groove; 502. Limiting groove; 503. Bidirectional screw; 504. Moving rod; 505. Limiting block; 506. Rotating cavity; 507. First bevel gear; 508. Second bevel gear; 509. Transmission rod; 510. Worm gear; 511. Worm; 512. Knob; 6. Pressing assembly; 601. Damping spring buffer; 602. Pressing plate; 7. Guide groove; 8. Guide block; 9. Reinforcing rib; 10. Limiting plate. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figures 1-6This utility model provides a technical solution: an EPP battery pressure-bearing packaging box, including a lower box body 1 and an upper box body 2. The upper box body 2 is located above the lower box body 1. Positioning grooves 3 are provided on both sides of the upper end of the lower box body 1. Positioning blocks 4 are fixedly connected to both sides of the lower end of the upper box body 2. The positioning blocks 4 and the positioning grooves 3 are engaged and locked together. A limiting component 5 is installed inside the upper box body 2 to fix the upper box body 2 on the lower box body 1. A pressing component 6 is installed inside the upper box body 2.

[0023] Furthermore, the packaging box achieves initial alignment and positioning of the upper box body 2 and the lower box body 1 through the engagement of the positioning block 4 and the positioning groove 3, ensuring the accuracy of the lid closing. The limiting component 5 actively and mechanically fixes the upper box body 2 and the lower box body 1 after the lid is closed, fundamentally overcoming the shortcomings of traditional packaging that relies solely on friction, providing a stable and reliable connection, and preventing the upper box body 2 and the lower box body 1 from separating due to external impact. At the same time, the downward pressing component 6 integrated in the upper box body 2 can apply downward pressure to the internal battery when the lid is closed, thereby effectively limiting the shaking of the battery during transportation and securing the battery in the designated position in the lower box body 1, enhancing the overall stability and cushioning protection performance of the packaging.

[0024] As one implementation method in this embodiment, please refer to Figures 1-5 As shown, the limiting component 5 includes two fixed components and a transmission component. The transmission component is installed on the two fixed components, which are symmetrically arranged. The fixed components include a moving groove 501 and two limiting grooves 502. The moving groove 501 is opened on one side of the lower end of the upper box 2, and the two limiting grooves 502 are symmetrically opened on one side of the upper part of the lower box 1. The two limiting grooves 502 are trapezoidal. A bidirectional screw 503 is rotatably connected to the inner wall of the moving groove 501. Two moving rods 504 are slidably connected inside the moving groove 501. The bidirectional screw 503 passes through the two moving rods 504, and both moving rods 504 are threaded to the outside of the bidirectional screw 503. Limiting blocks 505 are fixedly connected to the lower ends of the two moving rods 504, and the two limiting blocks 505 are symmetrically arranged. The two limiting blocks 505 respectively engage with the two limiting grooves 502.

[0025] The transmission assembly includes a rotating cavity 506 and two first bevel gears 507. The rotating cavity 506 is located inside the upper housing 2. The two first bevel gears 507 are respectively fixedly sleeved on the outside of two bidirectional screws 503, and the two first bevel gears 507 are arranged centrally symmetrically. Two second bevel gears 508 are rotatably connected to the inner walls of the two moving slots 501 near the rotating cavity 506. The two first bevel gears 507 mesh with the two second bevel gears 508 respectively. A transmission rod 509 is rotatably connected to the inner wall of the rotating cavity 506. The output ends of the second bevel gears 508 rotatably penetrate the inner walls of the two moving slots 501, and the output ends of the two second bevel gears 508 are fixedly connected to the two ends of the transmission rod 509. A worm gear 510 is fixedly sleeved at the middle of the outer side of the transmission rod 509. A worm 511 is rotatably connected to the inner wall of the rotating cavity 506. The worm 511 and the worm gear 510 mesh with each other. A knob 512 is rotatably connected to the upper end of the upper box 2. The output end of the knob 512 penetrates the upper box 2, and the output end of the knob 512 is fixedly connected to the upper end of the worm 511.

[0026] Furthermore, the user drives the worm gear 511 by rotating the knob 512. The worm gear 511 drives the worm wheel 510 to rotate, and then transmits the power synchronously to the second bevel gears 508 at both ends through the transmission rod 509. Each second bevel gear 508 then drives the first bevel gear 507 that meshes with it, thereby driving the bidirectional screw 503 to rotate. Since the two first bevel gears 507 are centrally symmetrically arranged, this ingenious design ensures that the bidirectional screws 503 on both sides can generate the same rotation direction when the transmission rod 509 rotates in a single direction. This causes the two sets of moving rods 504 to move synchronously towards or away from each other, and finally drives the limit block 505 to synchronously insert into or disengage from the trapezoidal limit groove 502. The synchronous linkage of the four symmetrically distributed locking points can be controlled by a single operating knob 512, which greatly improves the convenience of operation and locking efficiency. At the same time, the worm wheel 510 and worm gear 511 mechanism has a self-locking characteristic, which can effectively prevent the locking mechanism from loosening on its own under vibration or impact, ensuring the stability and safety of the connection between the upper box 2 and the lower box 1.

[0027] As one implementation method in this embodiment, please refer to Figure 6 As shown, the pressing component 6 includes multiple damping spring buffers 601, which are all fixedly connected to the top of the inner wall of the upper box 2, and the multiple damping spring buffers 601 are distributed in a rectangular array. The lower ends of the multiple damping spring buffers 601 are all fixedly connected to the pressing plate 602.

[0028] Furthermore, multiple damping spring buffers 601 arranged in a rectangular array are connected to a lower pressure plate 602. When the box 2 is closed, the lower pressure plate 602 first contacts the top of the battery. Subsequently, the spring part of the damping spring buffer 601 generates a continuous elastic rebound force due to the pressure. This force is evenly applied to the surface of the battery through the lower pressure plate 602, thereby effectively limiting the vertical jumping and shaking of the battery and stabilizing it in the designated position. At the same time, the damping characteristics inside the damping spring buffer 601 can quickly absorb and dissipate the energy generated by external impact or vibration, avoiding the continuous rebound of the pure spring system. Thus, together with the lower pressure plate 602, they provide stable support and excellent cushioning protection for the battery, significantly enhancing the reliability of the packaging during transportation.

[0029] The damping spring buffer 601 is existing technology, which includes a helical spring that provides elastic force and a damper that provides resistance. The two are usually designed as a coaxial unit. When subjected to external impact or pressure, the spring part will compress or extend to absorb and store energy, thereby playing a buffering role. At the same time, the damper will convert the mechanical energy stored in the spring into heat energy and dissipate it through the huge frictional resistance generated when the viscous medium inside flows through the small holes or gaps. This process can effectively suppress and quickly calm the reciprocating vibration of the spring, and finally achieve a smooth, rapid and rebound-free buffering effect, which will not be elaborated here.

[0030] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, guide grooves 7 are provided at the four corners of the upper box 2, and guide blocks 8 are fixedly connected at the four corners of the lower box 1. The four guide blocks 8 are respectively matched with the four guide grooves 7.

[0031] Furthermore, when multiple packaging boxes are stacked, the guide block 8 at the bottom of the lower box 1 of the upper packaging box will be inserted into the guide groove 7 at the top of the upper box 2 of the lower packaging box. This concave-convex structure forms a vertical positioning, realizing rapid alignment and precise positioning when stacking multiple packaging boxes. It effectively prevents horizontal slippage or misalignment between upper and lower packaging boxes during the stacking process, thereby ensuring the stability and neatness of the stack, greatly improving the safety and space utilization during warehousing and transportation. Moreover, after the upper and lower packaging boxes are stacked, there is a certain gap between the upper and lower packaging boxes, which can accommodate the knob 512.

[0032] As one implementation method in this embodiment, please refer to Figure 2 and Figure 4As shown, multiple reinforcing ribs 9 are fixedly connected to the inner walls of both the lower box body 1 and the upper box body 2. A set of limiting plates 10 is fixedly connected to the inner walls of both moving slots 501. Each set of limiting plates 10 has two plates, and the two limiting plates 10 are symmetrically arranged. The four limiting plates 10 are respectively rotatably sleeved on the outside of the two bidirectional screws 503.

[0033] Furthermore, multiple reinforcing ribs 9 increase the material thickness and structural rigidity of the inner walls of the lower box 1 and the upper box 2, effectively resisting external pressure and preventing deformation or damage to the inner walls of the lower box 1 and the upper box 2 when subjected to load or impact. This significantly improves the overall structural strength and durability of the packaging box. The limiting plate 10 limits the axial movement range of the bidirectional screw 503 driving the moving rod 504 and the limiting block 505 on it, effectively preventing the limiting block 505 from moving accidentally due to accidental touch of the knob 512. This ensures that the limiting block 505 can be smoothly aligned with the limiting groove 502 when the lid is closed, greatly facilitating the user's positioning and operation.

[0034] Working principle: First, place the battery in the designated position of the lower box 1, then cover the lower box 1 with the upper box 2. The positioning block 4 at the bottom of the upper box 2 will accurately insert into the positioning groove 3 of the lower box 1, playing a preliminary positioning and guiding role, ensuring that the lower box 1 and the upper box 2 are accurately aligned and preventing misalignment. During the closing process, the pressing component 6 inside the upper box 2 starts to work. Under the elastic action of multiple damping spring buffers 601, the pressing plate 602 continuously applies downward pressure to the battery, which can press the battery tightly at the moment the lower box 1 and the upper box 2 close, preventing the battery from shaking inside, and achieving pre-fixation and buffer protection of the battery. When the lower box 1 and the upper box 2 are closed, the limiting block 505 has been inserted into the limiting groove 502. At this time, the user rotates the knob 51 installed on the top of the upper box 2. 2. Knob 512 drives worm gear 511 to rotate, which in turn drives worm wheel 510 to rotate. Worm wheel 510 drives transmission rod 509 to rotate, and transmission rod 509 transmits power synchronously to two sets of second bevel gears 508 at both ends. Each second bevel gear 508 drives the first bevel gear 507 to rotate, thereby driving two bidirectional screws 503 to rotate synchronously. The rotation of bidirectional screws 503 causes the two moving rods 504 meshing on them to move towards or away from each other along the moving groove 501. Therefore, the limiting block 505 is pushed into one side of the trapezoidal limiting groove 502 of the lower box 1, which can firmly lock the upper box 2 and the lower box 1 together, ensuring that the upper box 2 and the lower box 1 are not easily separated when subjected to external force, greatly improving the reliability and safety of the fixation, thereby effectively protecting the battery.

[0035] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A pressure-bearing packaging box for EPP batteries, comprising a lower box body (1) and an upper box body (2), characterized in that: The upper box (2) is located above the lower box (1). Positioning grooves (3) are provided on both sides of the upper end of the lower box (1). Positioning blocks (4) are fixedly connected to both sides of the lower end of the upper box (2). The positioning blocks (4) and the positioning grooves (3) are engaged. A limiting component (5) for fixing the upper box (2) to the lower box (1) is installed inside the upper box (2). A pressing component (6) is installed inside the upper box (2).

2. The EPP battery pressure-bearing packaging box according to claim 1, characterized in that: The limiting component (5) includes two fixing components and a transmission component. The transmission component is mounted on the two fixing components, which are symmetrically arranged. Each fixing component includes a moving groove (501) and two limiting grooves (502). The moving groove (501) is located on one side of the lower end of the upper box (2), and the two limiting grooves (502) are symmetrically located on one side of the upper box (1). The two limiting grooves (502) are trapezoidally arranged. The inner wall of the moving groove (501) is rotatably connected. A bidirectional screw (503) is connected to the movable groove (501), and two movable rods (504) are slidably connected therein. The bidirectional screw (503) passes through the two movable rods (504), and both movable rods (504) are threaded to the outside of the bidirectional screw (503). The lower ends of the two movable rods (504) are fixedly connected to limit blocks (505), and the two limit blocks (505) are symmetrically arranged. The two limit blocks (505) respectively engage with the two limit grooves (502).

3. The EPP battery pressure-bearing packaging box according to claim 2, characterized in that: The transmission assembly includes a rotating cavity (506) and two first bevel gears (507). The rotating cavity (506) is located inside the upper housing (2). The two first bevel gears (507) are respectively fixedly sleeved on the outside of two bidirectional screws (503), and the two first bevel gears (507) are arranged in a centrally symmetrical manner. A second bevel gear (508) is rotatably connected to the inner wall of each of the two moving slots (501) near the rotating cavity (506). The two first bevel gears (507) mesh with the two second bevel gears (508). A transmission rod (509) is rotatably connected to the inner wall of the rotating cavity (506). The output ends of the second bevel gears (508) rotatably penetrate the inner walls of the two moving slots (501), and the output ends of the two second bevel gears (508) are fixedly connected to the two ends of the transmission rod (509). A worm gear (510) is fixedly sleeved in the middle of the outside of the transmission rod (509). A worm (511) is rotatably connected to the inner wall of the rotating cavity (506). The worm (511) and the worm gear (510) mesh with each other. A knob (512) is rotatably connected to the upper end of the upper box (2). The output end of the knob (512) penetrates the upper box (2), and the output end of the knob (512) is fixedly connected to the upper end of the worm (511).

4. The pressure-bearing packaging box for EPP batteries according to claim 1, characterized in that: The pressing assembly (6) includes multiple damping spring buffers (601), which are fixedly connected to the top of the inner wall of the upper box (2), and the multiple damping spring buffers (601) are arranged in a rectangular array. The lower ends of the multiple damping spring buffers (601) are fixedly connected to a pressing plate (602).

5. The pressure-bearing packaging box for EPP batteries according to claim 1, characterized in that: The upper box (2) has guide grooves (7) at the four corners of its upper end, and the lower box (1) has guide blocks (8) fixedly connected at the four corners of its lower end. The four guide blocks (8) are respectively matched with the four guide grooves (7).

6. The pressure-bearing packaging box for EPP batteries according to claim 2, characterized in that: The inner walls of the lower box (1) and the upper box (2) are fixedly connected with multiple reinforcing ribs (9), and the inner walls of the two moving slots (501) are fixedly connected with a set of limiting plates (10). Each set of limiting plates (10) has two plates, and the two limiting plates (10) are symmetrically arranged. The four limiting plates (10) are respectively rotatably sleeved on the outside of the two bidirectional screws (503).

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