Bare cell packaging structure and packaging box

Abstract

The utility model discloses a bare cell packaging structure and a packaging box, and relates to the technical field of battery production and manufacturing. The naked battery cell packaging structure comprises an aluminum plastic film. The aluminum plastic film comprises a first folding part and a second folding part. And the first folding part and the second folding part are rotationally connected through a folding line. An accommodating groove is formed in the first folding part; and the second turnover part is turned over towards the first turnover part along the turnover line, so that the accommodating groove is closed, and an accommodating cavity is formed. The accommodating cavity is used for accommodating the naked battery cell; and the tabs at the two ends of the naked battery cell are respectively accommodated at the two sides of the accommodating cavity along the direction of the folding line. The first folding part is also provided with a first packaging area. The first packaging areas are located on the two sides of the containing groove in the direction of the folding line and extend towards the outer side of the containing groove. The packaging box is used for packaging the naked battery cell packaging structure. The naked cell packaging structure of the packaging box can prevent the packaging structure from being in contact with the tabs to cause damage to the tabs, and can support the tabs to avoid shaking of the tabs.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and manufacturing, and in particular, to a bare battery cell packaging structure and a packaging box. Background Art

[0002] During the production of bare battery cells, it is necessary to package the finished bare battery cells for subsequent production and sales. Usually, the bare battery cells are stacked together for packaging.

[0003] The inventor has found through research that when the bare battery cells are stacked and packaged, the tabs at the ends of the bare battery cells are prone to bending and shaking up and down. The packaging structure will affect the tabs and come into contact with the tabs, causing damage to the tabs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a bare battery cell packaging structure and a packaging box, which can prevent the packaging structure from contacting the tabs and causing damage to the tabs, and can support the tabs to avoid shaking of the tabs.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides a bare battery cell packaging structure, including an aluminum-plastic film. The aluminum-plastic film includes a first folding part and a second folding part. The first folding part and the second folding part are rotationally connected through a folding line. A receiving groove is formed on the first folding part. The second folding part is flipped towards the first folding part along the folding line to close the receiving groove, forming a receiving cavity for receiving the bare battery cell. The tabs at both ends of the bare battery cell are respectively received on both sides of the receiving cavity along the folding line direction. The first folding part is further provided with a first encapsulation area, which is located on both sides of the receiving groove along the folding line direction and extends towards the outside of the receiving groove.

[0007] In an optional embodiment, a pressing groove corresponding to the receiving groove is formed on the second folding part. When the first folding part and the second folding part are pressed together, the receiving groove and the pressing groove are attached to form the receiving cavity.

[0008] In an optional embodiment, a supporting part for supporting the tab is arranged in the receiving groove.

[0009] In an optional embodiment, the supporting part is in a groove shape, and the depth of the supporting part is less than the depth of the receiving groove.

[0010] In an alternative embodiment, the first folding portion is further provided with a second encapsulation area, which is located on the side of the accommodation groove away from the folding line and extends outwardly from the accommodation groove, and both ends of the second encapsulation area are connected to the first encapsulation area.

[0011] In an alternative embodiment, the width of the second encapsulation area is smaller than the width of the first encapsulation area.

[0012] In an alternative embodiment, the first folding portion is further provided with a third encapsulation area, which is disposed between the accommodation groove and the folding line.

[0013] In a second aspect, the present utility model provides a packaging box, comprising a box body, a foam, and a bare cell packaging structure as described in any one of the foregoing embodiments. A cavity is provided in the box body, and the bare cell packaging structures are stacked in the cavity. The foam is used to fill the gap between the bare cell packaging structure and the inner wall of the box body.

[0014] In an alternative embodiment, the foam includes a plurality of spaced-apart placement grooves, and the bare cell packaging structures are stacked vertically in the placement grooves.

[0015] In an alternative embodiment, the box body includes a base and an upper cover, the upper cover is disposed on the base, and a tie strap is further included for fixing the base and the upper cover.

[0016] The beneficial effects of the embodiments of the present utility model are as follows:

[0017] The bare cell packaging structure of the present utility model includes an aluminum-plastic film. The aluminum-plastic film includes a first folding portion and a second folding portion. The first folding portion and the second folding portion are rotatably connected through a folding line. An accommodation groove is formed in the first folding portion. The second folding portion is flipped towards the first folding portion along the folding line so that the accommodation groove is closed to form an accommodation cavity. The accommodation cavity is used to accommodate the bare cell. The tabs at both ends of the bare cell are respectively accommodated on both sides of the accommodation cavity along the folding line direction. The first folding portion is further provided with a first encapsulation area. The first encapsulation area is located on both sides of the accommodation groove along the folding line direction and extends outwardly from the accommodation groove. Through the first folding portion and the second folding portion, the bare cell together with the tabs can be pressed into the accommodation cavity to prevent the tabs from shaking; by providing the first encapsulation area on both sides of the tabs, not only can the first folding portion and the second folding portion be encapsulated and fixed, but also when the bare cell is placed in the packaging structure, the tabs can be supported by the first encapsulation area between the tabs and the inner wall of the packaging structure, preventing the tabs from coming into contact with the packaging structure and damaging the tabs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the first state structure of the bare cell packaging structure provided by the first embodiment of the present utility model;

[0020] Figure 2 Schematic diagram of the second state structure of the bare cell packaging structure provided by the first embodiment of the present utility model;

[0021] Figure 3 Schematic diagram of the structure of the packaging box provided by the second embodiment of the present utility model.

[0022] Icons: 100 - Bare cell packaging structure; 10 - Aluminum-plastic film; 11 - First folding part; 12 - Second folding part; 13 - Folding line; 14 - Accommodating groove; 15 - Pressing groove; 16 - First encapsulation area; 17 - Second encapsulation area; 18 - Third encapsulation area; 20 - Bare cell; 21 - Tab; 200 - Packaging box; 30 - Box body; 31 - Upper cover; 32 - Base; 40 - Foam; 41 - Placing groove; 50 - Cable tie. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] It should be noted that: Similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0027] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] First Embodiment

[0030] Please refer to Figure 1 and Figure 2 , this embodiment provides a bare battery cell packaging structure 100, which includes an aluminum-plastic film 10. The aluminum-plastic film 10 includes a first folding portion 11 and a second folding portion 12. The first folding portion 11 and the second folding portion 12 are rotatably connected through a folding line 13. A receiving groove 14 is formed on the first folding portion 11. The second folding portion 12 is flipped towards the first folding portion 11 along the folding line 13 so that the receiving groove 14 is closed to form a receiving cavity for receiving the bare battery cell 20.

[0031] During encapsulation, the bare battery cell 20 is placed in the receiving groove 14, and then the second folding portion 12 is flipped towards the first folding portion 11 along the folding line 13. When the first folding portion 11 is attached to the second folding portion 12, the opening of the receiving groove 14 is closed by the second folding portion 12, thereby encapsulating the bare battery cell 20 in the receiving cavity.

[0032] Specifically, electrode tabs 21 are provided at both ends of the bare battery cell 20. The electrode tabs 21 at both ends of the bare battery cell 20 are respectively received on both sides of the receiving cavity along the extending direction of the folding line 13.

[0033] In this embodiment, the shape of the bare battery cell 20 is consistent with that of the receiving groove 14. When the bare battery cell 20 is placed in the receiving groove 14, the bare battery cell 20 can abut against the side wall of the receiving groove 14 to prevent the bare battery cell 20 from shaking in the receiving groove 14.

[0034] Furthermore, a first encapsulation area 16 is also provided on the first folding part 11. The first encapsulation area 16 is located on both sides of the receiving groove 14 along the folding line 13 direction and extends outward from the receiving groove 14. It can be understood that when the second folding part 12 is attached to the first folding part 11, the corresponding positions of the first encapsulation area 16 and the second folding part 12 are attached, and the first encapsulation area 16 and the second folding part 12 are fixed by hot pressing. At this time, the bare battery cell 20 and its electrode tab 21 are both located in the accommodation cavity. The first encapsulation area 16 is located outside the accommodation cavity and at the position of the electrode tab 21. When the bare battery cell packaging structure 100 is stacked and packaged, the electrode tab 21 of the bare battery cell 20 faces outward. It can be understood that in this embodiment, by providing the first encapsulation area 16 outside the electrode tab 21, the electrode tab 21 and the packaging structure are supported by the first encapsulation area 16. The packaging structure in this embodiment includes a foam 40. In order to prevent the electrode tab 21 from contacting the foam 40 and causing damage to the electrode tab 21, the first encapsulation area 16 can keep the electrode tab 21 and the foam 40 spaced apart.

[0035] Still further, when multiple bare battery cell packaging structures 100 are stacked up and down, intervals are formed between the multiple first encapsulation areas 16. When taking out the bare battery cell 20, fingers can be directly inserted into the intervals between the first encapsulation areas 16 to pull out the bare battery cell packaging structure 100.

[0036] In this embodiment, a pressing groove 15 corresponding to the receiving groove 14 is provided on the second folding part 12. When the first folding part 11 and the second folding part 12 are pressed together, the receiving groove 14 and the pressing groove 15 are attached to form an accommodation cavity. Specifically, the shape of the bare battery cell 20 is consistent with that of the pressing groove 15. When the second folding part 12 is flipped along the folding line 13 towards the first folding part 11, the pressing groove 15 can cover the bare battery cell 20 until it is attached to the second folding part 12. It can be understood that the thickness of the bare battery cell 20 is slightly less than or equal to the sum of the depths of the receiving groove 14 and the pressing groove 15. When the bare battery cell 20 is placed in the receiving groove 14, a part of the bare battery cell 20 extends out of the receiving groove 14. When the second folding part 12 is pressed on the first folding part 11, the pressing groove 15 just fits the part of the bare battery cell 20 that extends out of the receiving groove 14.

[0037] In order to fix the tab 21 of the bare battery cell 20, in this embodiment, a supporting portion for supporting the tab 21 is provided in the receiving groove 14. It can be understood that the tabs 21 are inserted on both sides of the bare battery cell 20. The tabs 21 are in the shape of thin sheets and have a thickness smaller than that of the bare battery cell 20. When the bare battery cell 20 is placed in the receiving groove 14, the tabs 21 are spaced from the bottom of the receiving groove 14 and lack support. Therefore, in this embodiment, a supporting portion is provided to abut against the suspended tabs 21 to support the tabs 21 and prevent the tabs 21 from shaking.

[0038] Further, the supporting portion is in the shape of a groove. The depth of the supporting portion is smaller than the depth of the receiving groove 14. It can be understood that protrusions are provided at both ends of the receiving groove 14, thereby forming a stepped bottom wall. The protrusions at the bottom walls at both ends of the receiving groove 14 form the supporting portion to support the tabs 21.

[0039] The first folding portion 11 is further provided with a second encapsulation area 17. The second encapsulation area 17 is located on a side of the receiving groove 14 away from the folding line 13 and extends outward from the receiving groove 14. Both ends of the second encapsulation area 17 are connected to the first encapsulation area 16. The second encapsulation area 17 increases the contact area with the second folding portion 12, thereby making it more convenient to thermally press and fix the first folding portion 11 and the second folding portion 12.

[0040] When the bare battery cells 20 are stacked, multiple stacked bare battery cells 20 need to be placed at intervals left and right. In order to reduce the interval between the bare battery cells 20 in the same horizontal plane, the width of the second encapsulation area 17 is smaller than the width of the first encapsulation area 16.

[0041] Further, the first folding portion 11 is further provided with a third encapsulation area 18. The third encapsulation area 18 is provided between the receiving groove 14 and the folding line 13.

[0042] Second Embodiment

[0043] Please refer to Figure 3 , this embodiment provides a packing box 200, which includes a box body 30, a foam 40 and the bare battery cell packaging structure 100 provided in the above first embodiment. A cavity is provided in the box body 30. The bare battery cell packaging structures 100 are stacked and placed in the cavity. The foam 40 is used to fill the gap between the bare battery cell packaging structure 100 and the inner wall of the box body 30.

[0044] Specifically, the foam 40 includes a plurality of spaced-apart placement grooves 41. The bare battery cell packaging structures 100 are stacked and placed in the placement grooves 41.

[0045] Further, the box body 30 includes a base 32 and an upper cover 31. The upper cover 31 is covered on the base 32. The packing box 200 further includes a tie strap 50 for fixing the base 32 and the upper cover 31.

[0046] The beneficial effects of the bare cell packaging structure 100 of the packaging box 200 provided in this embodiment are as follows:

[0047] The bare cell packaging structure 100 of the present utility model includes an aluminum-plastic film 10. The aluminum-plastic film 10 includes a first folding portion 11 and a second folding portion 12. The first folding portion 11 and the second folding portion 12 are rotatably connected through a folding line 13. A receiving groove 14 is formed on the first folding portion 11. The second folding portion 12 is flipped towards the first folding portion 11 along the folding line 13 so that the receiving groove 14 is closed to form a receiving cavity. The receiving cavity is used for receiving the bare cell 20. The pole ears 21 at both ends of the bare cell 20 are respectively received on both sides of the receiving cavity along the direction of the folding line 13. The first folding portion 11 is further provided with a first encapsulation area 16. The first encapsulation area 16 is located on both sides of the receiving groove 14 along the direction of the folding line 13 and extends outward from the receiving groove 14. Through the first folding portion 11 and the second folding portion 12, the bare cell 20 together with the pole ears 21 can be pressed into the receiving cavity to prevent the pole ears 21 from shaking; by providing the first encapsulation area 16 on both sides of the pole ears 21, not only can the first folding portion 11 and the second folding portion 12 be encapsulated and fixed, but also when the bare cell 20 is placed in the packaging structure, the pole ears 21 can be supported by the first encapsulation area 16 between the pole ears 21 and the inner wall of the packaging structure to prevent the pole ears 21 from coming into contact with the packaging structure and damaging the pole ears 21.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bare cell packaging structure, characterized in that: The invention comprises an aluminum-plastic film, wherein the aluminum-plastic film comprises a first folding portion and a second folding portion, wherein the first folding portion and the second folding portion are rotationally connected via a folding line, wherein a receiving groove is provided on the first folding portion, and the second folding portion is flipped toward the first folding portion along the folding line so that the receiving groove is closed to form a receiving cavity, wherein the receiving cavity is used to receive the bare battery cell; the pole ears at both ends of the bare battery cell are respectively received at both sides of the receiving cavity along the direction of the folding line, and the first folding portion is further provided with a first packaging area, wherein the first packaging area is located at both sides of the receiving groove along the direction of the folding line and extends to the outside of the receiving groove.

2. The bare cell packaging structure according to claim 1, characterized in that: The second folding portion is provided with a pressing groove corresponding to the accommodating groove. When the first folding portion and the second folding portion are pressed together, the accommodating groove and the pressing groove are fitted together to form the accommodating cavity.

3. The bare cell packaging structure according to claim 1, characterized in that: A supporting portion for supporting the tab is arranged in the accommodating groove.

4. The bare cell packaging structure according to claim 3, characterized in that: The supporting portion is groove-shaped, and the depth of the supporting portion is smaller than the depth of the accommodating groove.

5. The bare cell packaging structure according to claim 1, characterized in that: The first folding portion is further provided with a second packaging area, which is located on a side of the containing groove away from the folding line and extends toward the outside of the containing groove, and two ends of the second packaging area are connected to the first packaging area.

6. The bare cell packaging structure according to claim 5, characterized in that: The width of the second packaging area is smaller than the width of the first packaging area.

7. The bare cell packaging structure according to claim 1, characterized in that: The first folding portion is further provided with a third packaging area, and the third packaging area is arranged between the accommodating groove and the folding line.

8. A packaging box, characterized in that: It comprises a box body, foam and a bare cell packaging structure as described in any one of claims 1-7, wherein a cavity is provided in the box body, the bare cell packaging structure is stacked in the cavity, and the foam is used to fill the gap between the bare cell packaging structure and the inner wall of the box body.

9. The packaging box according to claim 8, characterized in that: The foam includes a plurality of placement grooves arranged at intervals, and the bare cell packaging structure is stacked up and down and placed in the placement grooves.

10. The packaging box according to claim 8, characterized in that: The box body comprises a base and an upper cover, wherein the upper cover is arranged on the base, and further comprises a cable tie for fixing the base and the upper cover.

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