Shock-absorbing and pressure-resistant lithium battery packaging structure

Abstract

The utility model belongs to the technical field of battery packaging, and particularly relates to a shock-absorbing and pressure-resisting lithium battery packaging structure which comprises a packaging box, box covers are symmetrically installed above the packaging box, EPE foam layers are fixed in the packaging box and the box covers, storage grooves are formed in the EPE foam layers, paperboard layers are arranged on the inner sides of the storage grooves, and the paperboard layers are arranged on the inner sides of the storage grooves. A corrugated structure is fixed on the inner side of the paperboard layer; supporting columns are fixed to the four corners in the packaging box, inserting grooves are formed in the four corners in the box cover, and protection corner blocks are fixed to the two sides of the packaging box and the two sides of the box cover. Through the composite design of the EPE foam layer and the corrugated structure, gradient absorption of impact energy is achieved, the supporting columns at the four corners and the protection corner blocks form a space truss structure, the compressive strength is greatly improved, and the problems that an existing packaging structure mostly adopts a single buffering structure, the compressive strength is insufficient, and particularly the corners of a packaging box are not effectively supported when being impacted, and the packaging box is damaged are solved. And the box body is easy to deform to damage the battery.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery packaging, specifically relates to a shock attenuation compression -resistant lithium battery packaging structure. BACKGROUND

[0002] Lithium battery is a kind of battery by lithium metal or lithium alloy as positive / negative electrode material, using non-aqueous electrolyte solution, lithium battery as the core energy storage component in new energy field, its transportation safety has been the industry pain point, to ensure the safety of transportation, it needs to be packaged, so as to use a lithium battery packaging structure;

[0003] The Chinese patent with the authorized publication number CN221294549U discloses a battery packaging structure, relating to the technical field of battery packaging, which comprises a carton and a packaging unit longitudinally stacked in the carton, the packaging unit comprises a paper tank and a paper-plastic tray embedded into the paper tank, the paper-plastic tray is provided with a battery accommodating groove with an opening upward, the bottom of the battery accommodating groove is concave to form a limiting groove, part of the profile of the limiting groove corresponds to part of the profile of the protrusion on the bottom of the battery, so that part of the protrusion on the bottom of the battery is embedded to limit the horizontal movement of the battery in the battery accommodating groove. The utility model can prevent the battery from shaking in the paper-plastic tray during transportation, avoid the collision between the battery and the paper-plastic tray, and prevent the battery from being damaged.

[0004] Although the battery packaging structure in the above can prevent the battery from shaking in the paper-plastic tray, avoid the collision between the battery and the paper-plastic tray, and prevent the battery from being damaged, the existing packaging structure mainly adopts a single buffer structure, which has insufficient compression resistance, lacks effective support when the corner of the packaging box is impacted during long-distance transportation, and the box body is easily deformed to cause damage to the battery and easily cause short-circuit risk. Therefore, we propose a shock attenuation compression-resistant lithium battery packaging structure. UTILITY MODEL CONTENTS

[0005] To solve the problem of the existing packaging structure mainly adopting a single buffer structure, which has insufficient compression resistance, lacks effective support when the corner of the packaging box is impacted during long-distance transportation, and the box body is easily deformed to cause damage to the battery and easily cause short-circuit risk in the above background art, the utility model provides a shock attenuation compression-resistant lithium battery packaging structure, which realizes great improvement in buffer performance and transportation safety through material combination innovation and mechanical structure optimization.

[0006] To achieve the above object, the utility model provides the following technical scheme: a shock attenuation compression-resistant lithium battery packaging structure, comprising a packaging box, the packaging box is symmetrically installed with a box cover above, the inside of the packaging box and the box cover is fixed with EPE bubble cotton layer, the inside of the EPE bubble cotton layer is provided with a storage groove, the inner side of the storage groove is provided with a paperboard layer, the inner side of the paperboard layer is fixed with a corrugated structure;

[0007] Supporting columns are fixed to the four corners of the packaging box, and insertion slots are formed in the four corners of the box cover.

[0008] Preferably, fixed plates are fixed to the two sides of the upper end of the packaging box, positioning screws are arranged in the fixed plates, and clamping grooves are formed in the two sides of the lower end of the box cover.

[0009] Preferably, the fixed plates and the clamping grooves are matched in size, and the box cover is fixed relative to the packaging box through the fixed plates and the positioning screws.

[0010] Preferably, the supporting columns are fixedly connected with the packaging box, and the supporting columns correspond in position to the insertion slots.

[0011] Preferably, the corrugated structures are uniformly distributed along the inner sides of the paperboard layers, and the paperboard layers are adhesively connected with the inner walls of the storage grooves.

[0012] Preferably, the protective corner blocks are symmetrically distributed about the vertical center lines of the packaging box and the box cover.

[0013] Preferably, a stacking groove is formed in the lower end surface of the packaging box, a protruding plate is fixed to the upper end surface of the box cover, and the protruding plate is identical in cross-sectional dimension to the stacking groove.

[0014] Compared with the prior art, the application has the beneficial effects that: through the composite design of the EPE foam layer and the corrugated structure, the application realizes gradient absorption of impact energy, the four supporting columns and the protective corner blocks form a space truss structure, the compression strength is greatly improved, the single buffer structure is used in the existing packaging structure, and the compression resistance performance is insufficient, in long-distance transportation, especially when the corner of the packaging box is impacted, there is a lack of effective support, the box body is easy to deform, the battery is damaged, and the short circuit risk is caused. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application. In the drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the application.

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the packaging box and lid of this utility model;

[0019] Figure 4 This is a schematic diagram of the paperboard layer in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the packaging box and lid of this utility model after being flipped over.

[0021] In the diagram: 1. Packaging box; 2. Box lid; 3. Fixing plate; 4. Positioning screw; 5. Slot; 6. Support column; 7. Insertion slot; 8. EPE foam layer; 9. Storage slot; 10. Cardboard layer; 11. Corrugated structure; 12. Protective corner block; 13. Raised plate; 14. Stacking slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] like Figures 1-5 As shown;

[0025] A shock-absorbing and pressure-resistant lithium battery packaging structure includes a packaging box 1, with a box cover 2 symmetrically installed on the top of the packaging box 1. Both the packaging box 1 and the box cover 2 have EPE foam layers 8 fixed inside. The EPE foam layers 8 have storage slots 9 inside. The inner side of the storage slots 9 is provided with cardboard layers 10. The inner side of the cardboard layers 10 is fixed with corrugated structures 11. Support columns 6 are fixed at the four corners inside the packaging box 1. Insertion slots 7 are opened at the four corners inside the box cover 2. Protective corner blocks 12 are fixed on both sides of the packaging box 1 and the box cover 2.

[0026] In this implementation plan: the composite design of EPE foam layer 8 and corrugated structure 11 achieves gradient absorption of impact energy, and the four corner support columns 6 and protective corner blocks 12 form a spatial truss structure, which greatly improves the compressive strength.

[0027] Furthermore:

[0028] In an optional embodiment, fixing plates 3 are fixed on both sides of the upper end of the packaging box 1, and positioning screws 4 are inserted inside the fixing plates 3. Slots 5 are opened on both sides of the lower end of the box cover 2. The sizes of the fixing plates 3 and the slots 5 are matched, and the box cover 2 is fixed to the packaging box 1 by the fixing plates 3 and the positioning screws 4.

[0029] In this implementation plan: the cooperation between the fixing plate 3 and the slot 5, combined with the positioning screw 4, enables the box lid to be quickly locked, thereby improving the sealing of the packaging.

[0030] Furthermore:

[0031] In an optional embodiment, the support column 6 is fixedly connected to the packaging box 1, and the support column 6 corresponds to the position of the insertion slot 7.

[0032] In this implementation scheme: the support column 6 and the insertion slot 7 are fitted with shaft holes, which can decompose the corner impact force into axial / tangential components, thereby reducing the amount of deformation.

[0033] Furthermore:

[0034] In an optional embodiment, the corrugated structure 11 is evenly distributed along the inner side of the cardboard layer 10, and the cardboard layer 10 is glued to the inner wall of the storage groove 9.

[0035] In this implementation scheme, the impact energy gradient absorption is achieved through the composite design of EPE foam layer 8 and corrugated structure 11.

[0036] Furthermore:

[0037] In an optional embodiment, the protective corner blocks 12 are symmetrically distributed about the vertical center lines of the packaging box 1 and the box lid 2.

[0038] In this implementation plan, the four corner support columns 6 and the protective corner blocks 12 form a spatial truss structure, which greatly improves the compressive strength.

[0039] Furthermore:

[0040] In an optional embodiment, a stacking groove 14 is provided on the lower end face of the packaging box 1, and a protruding plate 13 is fixed on the upper end face of the box cover 2. The cross-sectional dimensions of the protruding plate 13 and the stacking groove 14 are the same.

[0041] In this implementation plan, the tenon and mortise structure between the raised plate 13 and the stacking groove 14 enables automatic stacking correction, reducing the storage space occupancy rate.

[0042] Working principle: First, place the batteries in the storage slots 9 inside the packaging box 1, then close the box lid 2. At this time, the support column 6 is inserted into the insertion slot 7, and the fixing plate 3 and the slot 5 are engaged with each other. Then, the fixing plate 3 is locked by the positioning screw 4. Secondly, the tenon and mortise structure of the protruding plate 13 and the stacking slot 14 facilitates the stacking of the box. During the stacking process, the cooperation between the support column 6 and the protective corner block 12 can improve the pressure resistance of the box and prevent the upper objects from squeezing and deforming the box. Then, if there is an impact during transportation, the external impact force first acts on the EPE foam layer 8. Its closed-cell structure absorbs kinetic energy through elastic deformation. The remaining impact force is transmitted to the inner corrugated layer, and the honeycomb pores further disperse the stress through plastic deformation. Finally, the support column 6 and the protective corner block 12 form a space truss structure to decompose the corner impact force. Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shock-absorbing and pressure-resistant lithium battery packaging structure, comprising a packaging box (1), characterized in that: The packaging box (1) is symmetrically equipped with a lid (2) on top. Both the packaging box (1) and the lid (2) are fixed with an EPE foam layer (8). The EPE foam layer (8) has a storage slot (9) inside. The storage slot (9) is provided with a cardboard layer (10) on the inside. The cardboard layer (10) is fixed with a corrugated structure (11) on the inside. The four corners of the packaging box (1) are fixed with support columns (6), the four corners of the box cover (2) are provided with insertion slots (7), and the two sides of the packaging box (1) and the box cover (2) are fixed with protective corner blocks (12).

2. The shock-absorbing and pressure-resistant lithium battery packaging structure according to claim 1, characterized in that: The packaging box (1) has fixing plates (3) on both sides of the upper end, and positioning screws (4) are inserted inside the fixing plates (3). The box cover (2) has slots (5) on both sides of the lower end.

3. The shock-absorbing and pressure-resistant lithium battery packaging structure according to claim 2, characterized in that: The size of the fixing plate (3) matches that of the slot (5), and the box cover (2) is fixed relative to the packaging box (1) by the fixing plate (3) and the positioning screw (4).

4. The shock-absorbing and pressure-resistant lithium battery packaging structure according to claim 1, characterized in that: The support column (6) is fixedly connected to the packaging box (1), and the position of the support column (6) corresponds to that of the insertion slot (7).

5. The shock-absorbing and pressure-resistant lithium battery packaging structure according to claim 1, characterized in that: The corrugated structure (11) is evenly distributed along the inner side of the cardboard layer (10), and the cardboard layer (10) is glued to the inner wall of the storage groove (9).

6. The shock-absorbing and pressure-resistant lithium battery packaging structure according to claim 1, characterized in that: The protective corner blocks (12) are symmetrically distributed about the vertical center lines of the packaging box (1) and the box lid (2).

7. The shock-absorbing and pressure-resistant lithium battery packaging structure according to claim 1, characterized in that: The lower end face of the packaging box (1) is provided with a stacking groove (14), and the upper end face of the box cover (2) is fixed with a protruding plate (13), the protruding plate (13) and the stacking groove (14) have the same cross-sectional dimensions.

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