Bare cell packaging structure and packaging box
By using a combination design of blister disc and aluminum-plastic film in the bare-cell packaging structure, the problem of bending and shaking of the bare-cell electrode ears during packaging is solved, and effective support and protection of the electrode ears are achieved.
Patent Information
- Application Number
- CN202422047565.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-22
AI Technical Summary
During the stacking and packaging of bare electric cells, the extreme ears are prone to bend and shake, causing the packaging structure to come into contact with the extreme ears and causing damage to the extreme ears.
A bare electric core packaging structure including a blister disk and an aluminum-plastic film is adopted. A plurality of accommodation grooves are provided on the blister disk. The aluminum-plastic film cover is arranged on the blister disk to form a housing cavity. The electrode ears are respectively accommodated on both sides of the housing cavity along the first direction. The length of the aluminum-plastic film in the first direction is greater than the length of the housing groove to support the electrode ears and prevent them from contacting the packaging structure.
Effectively prevent the electrode from contacting the packaging structure, avoid damage to the electrode, and at the same time support the electrode to prevent it from shaking.
Smart Images
Figure CN223046350U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery production and manufacturing, and more specifically, to a bare cell packaging structure and a packaging box. Background Art
[0002] During the production of bare cells, it is necessary to package the finished bare cells for subsequent production and sales. Usually, the bare cells are stacked together for packaging.
[0003] After research by the inventor, it is found that when the bare cells are stacked and packaged, the tabs at the ends of the bare 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 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 tab shaking.
[0005] The embodiments of the utility model are implemented as follows:
[0006] In a first aspect, the utility model provides a bare cell packaging structure, including a plastic suction tray and an aluminum-plastic film. A plurality of accommodating grooves are formed in the plastic suction tray, and the accommodating grooves are used for placing bare cells. The aluminum-plastic film covers the plastic suction tray to enclose the accommodating grooves to form an accommodating cavity. The tabs at both ends of the bare cell are respectively accommodated on both sides of the accommodating cavity along a first direction, and the length of the aluminum-plastic film along the first direction is greater than the length of the accommodating groove along the first direction.
[0007] In an optional embodiment, a supporting part for supporting the tabs is arranged in the accommodating groove.
[0008] 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 accommodating groove.
[0009] In an optional embodiment, connecting parts are further arranged on both sides of the plastic suction tray along the first direction. The connecting parts extend towards the outside of the plastic suction tray, and the connecting parts are used for fixedly connecting with the aluminum-plastic film.
[0010] In an optional embodiment, the length of the connecting part is the same as the length by which the aluminum-plastic film exceeds the plastic suction tray.
[0011] In an optional embodiment, the accommodating grooves are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.
[0012] In an optional embodiment, the length of the aluminum-plastic film along the second direction is greater than the length of the plastic suction tray along the second direction.
[0013] In a second aspect, the present utility model provides a packaging box, which includes a box body, a foam, and the bare cell packaging structure described in any of the foregoing embodiments. A cavity is provided inside the box body, the bare cell packaging structures are stacked and placed inside 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.
[0014] In an alternative embodiment, a placement groove is provided inside the foam, the shape of the placement groove is the same as the shape of the bare cell packaging structure, and the bare cell packaging structures are stacked and placed up and down inside the placement groove.
[0015] In an alternative embodiment, the box body includes a base and an upper cover, the upper cover is covered 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 a plastic suction tray and an aluminum-plastic film. A plurality of accommodation grooves are provided on the plastic suction tray. The accommodation grooves are used to place bare cells. The aluminum-plastic film is covered on the plastic suction tray to close the accommodation grooves and form an accommodation cavity. The pole ears at both ends of the bare cell are respectively accommodated on both sides of the accommodation cavity along a first direction. The length of the aluminum-plastic film along the first direction is greater than the length of the accommodation groove along the first direction. By placing the bare cell into the plastic suction tray and encapsulating it with the aluminum-plastic film, the bare cell is fixed to prevent the pole ears at both ends of the bare cell from shaking; the length of the aluminum-plastic film along the first direction is greater than the length of the accommodation groove along the first direction, so that when the pole ears are loaded into the accommodation cavity and the aluminum-plastic film is covered on the plastic suction tray, the aluminum-plastic film can extend out of the outside of the plastic suction tray. When the bare cell is placed into the packaging structure, the pole ears can be supported by the aluminum-plastic film between the pole ears and the inner wall of the packaging structure, preventing the pole ears from coming into contact with the packaging structure and damaging the pole ears. Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0019] Figure 1 Structural schematic diagram of the bare cell packaging structure provided by the first embodiment of the present utility model;
[0020] Figure 2 Structural schematic diagram of the plastic suction tray provided by the first embodiment of the present utility model;
[0021] Figure 3Schematic diagram of the packaging box provided for the second embodiment of the present utility model.
[0022] Icons: 100 - Bare battery cell packaging structure; 10 - Blister tray; 11 - Accommodating groove; 20 - Aluminum-plastic film; 30 - Bare battery cell; 31 - Tab; 200 - Packaging box; 40 - Box body; 41 - Upper cover; 42 - Base; 50 - Foam; 51 - Placing groove; 60 - Cable tie. Detailed implementation manners
[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, 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 illustrated in the accompanying drawings herein can be arranged and designed in various different configurations.
[0024] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings below is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0025] It should be noted that: Similar reference numerals and letters denote 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 accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed when in 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 thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction 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, 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 defined, the terms "set", "installed", "connected", and "coupled" 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 components. 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 cell packaging structure 100, which includes a blister tray 10 and an aluminum-plastic film 20. A plurality of receiving grooves 11 are formed on the blister tray 10, and the receiving grooves 11 are used for placing the bare cells 30. The aluminum-plastic film 20 is covered on the blister tray 10 to close the receiving grooves 11 and form a receiving cavity.
[0031] During encapsulation, the bare cells 30 are placed in the receiving grooves 11, and then the aluminum-plastic film 20 is covered on the blister tray 10, and the aluminum-plastic film 20 and the blister tray 10 are fixed by hot pressing, so as to encapsulate the bare cells 30 in the receiving cavity.
[0032] Specifically, tab ears 31 are provided at both ends of the bare cell 30. The tab ears 31 at both ends of the bare cell 30 are respectively received on both sides of the receiving cavity along the first direction.
[0033] It can be understood that in this embodiment, the bare cell 30 is rectangular, and the first direction is the extending direction of the long side of the bare cell 30. The tab ears 31 are respectively provided on both sides of the bare cell 30 along the first direction. Correspondingly, the shape of the receiving groove 11 is the same as the shape of the bare cell 30. Specifically, in this embodiment, the receiving groove 11 is a rectangular groove. When the bare cell 30 is placed in the receiving groove 11, the bare cell 30 can abut against the side wall of the receiving groove 11 to prevent the bare cell 30 from shaking in the receiving groove 11.
[0034] Furthermore, the length of the aluminum-plastic film 20 along the first direction is greater than the length of the receiving groove 11 along the first direction. It can be understood that when the aluminum-plastic film 20 is covered on the blister tray 10, both ends of the aluminum-plastic film 20 along the first direction extend out of the blister tray 10. That is to say, both ends of the aluminum-plastic film 20 extend out of both sides of the receiving groove 11, that is, both sides of the tab ears 31. In this embodiment, by providing the aluminum-plastic film 20 outside the tab ears 31, the tab ears 31 are supported by the aluminum-plastic film 20 between the packaging structure. The packaging structure in this embodiment includes a foam 50. In order to prevent the tab ears 31 from contacting the foam 50 and causing damage to the tab ears 31, the aluminum-plastic film 20 can make the tab ears 31 and the foam 50 spaced apart.
[0035] In this embodiment, the bare battery cell 30 is directly placed in the placement groove 51. In other embodiments, the bare battery cell 30 can also be placed in the placement groove 51 after being encapsulated by the aluminum-plastic film 20.
[0036] In order to fix the tabs 31 of the bare battery cell 30, in this embodiment, a support portion for supporting the tabs 31 is provided in the accommodation groove 11. It can be understood that the tabs 31 are inserted on both sides of the bare battery cell 30. The tabs 31 are in the shape of thin sheets and have a thickness smaller than that of the bare battery cell 30. When the bare battery cell 30 is placed in the accommodation groove 11, the tabs 31 are spaced from the bottom of the accommodation groove 11 and lack support. Therefore, in this embodiment, a support portion is provided to abut against the suspended tabs 31 to support the tabs 31 and prevent the tabs 31 from shaking.
[0037] Furthermore, the support portion is in the shape of a groove. The depth of the support portion is smaller than the depth of the accommodation groove 11. It can be understood that protrusions are provided at both ends of the accommodation groove 11, thereby forming a stepped bottom wall. The protrusions at the bottom walls at both ends of the accommodation groove 11 form the support portion to support the tabs 31.
[0038] In this embodiment, the accommodation grooves 11 are arranged at intervals in the second direction. The second direction is perpendicular to the first direction. Specifically, the second direction is perpendicular to the long side direction of the bare battery cell 30. In this embodiment, the long side directions of the plurality of bare battery cells 30 are parallel to each other.
[0039] Optionally, in this embodiment, five accommodation grooves 11 are arranged at intervals on the plastic suction tray 10 for placing five bare battery cells 30 side by side, so that the bare battery cells 30 are located on the same horizontal plane when encapsulated in the plastic suction tray 10. In other embodiments, three, four or other numbers of accommodation grooves 11 can be provided on the plastic suction tray 10. As long as the bare battery cells 30 can be encapsulated in the plastic suction tray 10, the number of the accommodation grooves 11 is not limited in the present invention.
[0040] In order to facilitate the connection between the plastic suction tray 10 and the aluminum-plastic film 20, connection portions are further provided on both sides of the plastic suction tray 10 along the first direction. The connection portions extend towards the outside of the plastic suction tray 10, and the connection portions are used for fixedly connecting with the aluminum-plastic film 20. It can be understood that the connection portions increase the contact area between the plastic suction tray 10 and the aluminum-plastic film 20. When the plastic suction tray 10 and the aluminum-plastic film 20 are attached, the arrangement of the connection portions increases the hot pressing area, making the encapsulation of the plastic suction tray 10 and the aluminum-plastic film 20 more stable.
[0041] Further, the length of the connecting portion is the same as the length by which the aluminum-plastic film 20 exceeds the blister tray 10. It can be understood that, in this embodiment, the hardness of the blister tray 10 is greater than that of the aluminum-plastic film 20. The connecting portions are arranged on both sides of the blister tray 10 along the first direction. When the bare battery cells 30 are stacked, the tab 31 and the packaging structure are supported by the aluminum-plastic film 20 and the connecting portions, preventing the aluminum-plastic film 20 from deforming and strengthening the support structure between the tab 31 and the foam 50.
[0042] Still further, the length of the aluminum-plastic film 20 along the second direction is greater than the length of the blister tray 10 along the second direction. Specifically, in this embodiment, both the blister tray 10 and the aluminum-plastic film 20 are square. When the aluminum-plastic film 20 covers the blister tray 10, each side of the aluminum-plastic film 20 extends beyond each side of the blister tray 10, that is, the area of the aluminum-plastic film 20 is greater than the area of the blister tray 10. When multiple bare battery cell packaging structures 100 are stacked vertically, intervals are formed between multiple aluminum-plastic films 20. When it is necessary to take out the bare battery cells 30, fingers can be inserted into the intervals between the aluminum-plastic films 20 to pull out the bare battery cell packaging structure 100.
[0043] Second Embodiment
[0044] Please refer to Figure 3 , this embodiment provides a packing box 200, which includes a box body 40, a foam 50 and the bare battery cell packaging structure 100 provided in the above first embodiment. A cavity is provided in the box body 40. The bare battery cell packaging structures 100 are stacked and placed in the cavity. The foam 50 is used to fill the gap between the bare battery cell packaging structure 100 and the inner wall of the box body 40.
[0045] Specifically, a placement groove 51 is provided in the foam 50. The shape of the placement groove 51 is the same as the shape of the bare battery cell packaging structure 100. The bare battery cell packaging structures 100 are stacked vertically and placed in the placement groove 51.
[0046] Specifically, in this embodiment, the bare battery cell packaging structure 100 is square, and the placement groove 51 is a square groove. When the bare battery cell packaging structure 100 is stacked vertically and placed in the placement groove 51, the edge of the aluminum-plastic film 20 abuts against the inner wall of the placement groove 51. It can be understood that the foam 50 is a soft material that can undergo a certain amount of deformation, can buffer the bare battery cell packaging structure 100, and can also facilitate the removal of the bare battery cell packaging structure 100.
[0047] Further, the box body 40 includes a base 42 and an upper cover 41. The upper cover 41 covers the base 42. The packing box 200 further includes a cable tie 60 for fixing the base 42 and the upper cover 41. The beneficial effects of the bare battery cell packaging structure 100 of the packing box 200 provided in this embodiment are:
[0048] The bare battery cell packaging structure 100 of the present utility model includes a plastic suction tray 10 and an aluminum-plastic film 20. A plurality of accommodating grooves 11 are formed in the plastic suction tray 10. The accommodating grooves 11 are used for placing the bare battery cell 30. The aluminum-plastic film 20 is covered on the plastic suction tray 10 to seal the accommodating grooves 11 and form an accommodating cavity. The electrode tabs 31 at both ends of the bare battery cell 30 are respectively accommodated on both sides of the accommodating cavity along the first direction. The length of the aluminum-plastic film 20 along the first direction is greater than the length of the accommodating groove 11 along the first direction. By placing the bare battery cell 30 into the plastic suction tray 10 and encapsulating it with the aluminum-plastic film 20, the bare battery cell 30 is fixed to prevent the electrode tabs 31 at both ends of the bare battery cell 30 from shaking; the length of the aluminum-plastic film 20 along the first direction is greater than the length of the accommodating groove 11 along the first direction, so that when the electrode tabs 31 are loaded into the accommodating cavity and the aluminum-plastic film 20 is covered on the plastic suction tray 10, the aluminum-plastic film 20 can extend out of the outside of the plastic suction tray 10. When the bare battery cell 30 is placed into the packaging structure, the electrode tabs 31 can be supported by the aluminum-plastic film 20 between the electrode tabs 31 and the inner wall of the packaging structure, preventing the electrode tabs 31 from contacting the packaging structure and damaging the electrode tabs 31.
[0049] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A bare cell packaging structure, characterized in that: It includes a blister tray and an aluminum-plastic film, wherein the blister tray is provided with a plurality of receiving grooves for placing bare batteries, and the aluminum-plastic film cover is provided on the blister tray for closing the receiving grooves to form a receiving cavity; the pole ears at both ends of the bare batteries are respectively received on both sides of the receiving cavity along a first direction, and the length of the aluminum-plastic film along the first direction is greater than the length of the receiving groove along the first direction.
2. 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.
3. The bare cell packaging structure according to claim 2, 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.
4. The bare cell packaging structure according to claim 1, characterized in that: The blister tray is further provided with connecting parts on both sides along the first direction. The connecting parts extend toward the outside of the blister tray and are used for fixed connection with the aluminum-plastic film.
5. The bare cell packaging structure according to claim 4, characterized in that: The length of the connecting portion is the same as the length of the aluminum-plastic film exceeding the blister tray.
6. The bare cell packaging structure according to claim 1, characterized in that: The accommodating grooves are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.
7. The bare cell packaging structure according to claim 6, characterized in that: The length of the aluminum-plastic film along the second direction is greater than the length of the blister tray along the second direction.
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: A placement groove is provided in the foam, the shape of the placement groove is consistent with the shape of the bare cell packaging structure, and the bare cell packaging structure is stacked up and down and placed in the placement groove.
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.