Packaging structure and battery
By setting up separate air bags in the battery packaging structure, the two sealings of multiple batteries are achieved, which solves the problem of difficulty in determining the liquid retention volume of the battery cell in the prior art and improves the product yield.
Patent Information
- Application Number
- CN202421331592.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-12
AI Technical Summary
In the prior art, multiple battery cells are packaged in the same packaging bag, and it is difficult to determine the liquid retention amount of each battery cell, which affects the product yield.
A packaging structure is adopted, including a partition, a first packaging film and a second packaging film. By providing separate air bags of each cell, the two seals of each cell are realized, so as to facilitate the determination of the liquid retention volume of each cell.
Through this packaging structure, each battery cell can be separately filled with liquid, pumped and sealed to ensure the accurate liquid retention volume of each battery cell and improve product yield.
Smart Images
Figure CN222927638U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a packaging structure and a battery. Background Art
[0002] In order to improve the energy density of the battery, in the related art, a plurality of battery cells are encapsulated in the same packaging bag, and the battery cells are separated by a separator. However, in the second packaging process of the related art packaging structure, it is difficult to determine the liquid retention amount of each of the plurality of battery cells, which affects the product yield. Therefore, it is necessary to conduct research and improvement on the above problems. Summary of the Utility Model
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a packaging structure that can conveniently determine the liquid retention amount of each battery cell and improve the product yield.
[0004] The utility model also provides a battery with the above packaging structure.
[0005] According to the packaging structure of the embodiment of the utility model, it includes a separator, a first packaging film and a second packaging film. The first packaging film, the separator and the second packaging film are arranged in sequence along a first direction. The first packaging film and the second packaging film are connected to each other. A first accommodation cavity and a first air bag are formed between the first packaging film and the separator. The first accommodation cavity is used to accommodate a first battery cell. The first air bag is arranged at an interval from the first accommodation cavity and is communicated with the first accommodation cavity. A second accommodation cavity and a second air bag are formed between the second packaging film and the separator. The second accommodation cavity is used to accommodate a second battery cell. The second air bag is arranged at an interval from the second accommodation cavity and is communicated with the second accommodation cavity. Wherein, the first air bag and the second air bag are separated from each other.
[0006] According to the packaging structure of the embodiment of the utility model, it has at least the following beneficial effects: the first air bag and the second air bag are separated from each other, and the first air bag and the second air bag are respectively communicated with the first accommodation cavity and the second accommodation cavity, so that the first battery cell and the second battery cell can be respectively injected with liquid, evacuated and second-packaged, so as to conveniently determine the liquid retention amount of the first battery cell and the second battery cell respectively and improve the product yield.
[0007] According to some embodiments of the present utility model, the partition, the first encapsulation film and the second encapsulation film are sequentially arranged along a first direction. The first encapsulation film includes a first main body and a second main body. The second main body is connected to one side of the first main body in a second direction. A first accommodation cavity is defined between the first main body and the partition, and a first air bag is defined between the second main body and the partition. The size of the second main body in a third direction is smaller than the size of the first main body in the third direction. The first direction, the second direction and the third direction are perpendicular to each other; and / or, the second encapsulation film includes a third main body and a fourth main body. The fourth main body is connected to one side of the third main body in the second direction. A second accommodation cavity is defined between the third main body and the partition, and a second air bag is defined between the fourth main body and the partition. The size of the fourth main body in the third direction is smaller than the size of the third main body in the third direction.
[0008] According to some embodiments of the present utility model, the partition, the first encapsulation film and the second encapsulation film are sequentially arranged along a first direction. The first encapsulation film includes a first main body and a second main body. The second main body is connected to one side of the first main body in a second direction. A first accommodation cavity is defined between the first main body and the partition, and a first air bag is defined between the second main body and the partition. The size of the second main body in a third direction is smaller than the size of the first main body in the third direction; the second encapsulation film includes a third main body and a fourth main body. The fourth main body is connected to one side of the third main body in the second direction. A second accommodation cavity is defined between the third main body and the partition, and a second air bag is defined between the fourth main body and the partition. The size of the fourth main body in the third direction is smaller than the size of the third main body in the third direction; wherein, the second main body and the fourth main body are arranged side by side in the third direction.
[0009] According to some embodiments of the present utility model, the first accommodation cavity and the second accommodation cavity are arranged side by side in the first direction.
[0010] According to some embodiments of the present utility model, a first accommodation groove is provided on the first encapsulation film, and the first accommodation cavity is formed between the first accommodation groove and the partition; and / or, a second accommodation groove is provided on the second encapsulation film, and the second accommodation cavity is formed between the second accommodation groove and the partition.
[0011] According to some embodiments of the present utility model, the first airbag and the second airbag are distributed along a third direction. The first encapsulation film includes an upper double-sealing area, and the second encapsulation film includes a lower double-sealing area. Both the upper double-sealing area and the lower double-sealing area are connected to the separator. The upper double-sealing area and the lower double-sealing area are distributed along a second direction, and the second direction is perpendicular to the third direction. The size of the upper double-sealing area in the second direction is greater than 1.2 mm, and the size of the lower double-sealing area in the second direction is greater than 6 mm.
[0012] According to some embodiments of the present utility model, the first airbag and the second airbag are distributed along a third direction. The first encapsulation film includes an upper double-sealing area, and the second encapsulation film includes a lower double-sealing area. Both the upper double-sealing area and the lower double-sealing area are connected to the separator. The upper double-sealing area and the lower double-sealing area are distributed along a second direction, and the second direction is perpendicular to the third direction. The distance between the upper double-sealing area and the first airbag in the second direction is a, and a ≥ 12 mm. The distance between the lower double-sealing area and the second airbag in the second direction is e, and e ≥ 0.
[0013] According to some embodiments of the present utility model, the first airbag and the second airbag are distributed along a third direction. The first encapsulation film includes an upper single-sealing area, and the second encapsulation film includes a lower single-sealing area. The second direction is perpendicular to the third direction. The size of the upper single-sealing area in the second direction is greater than 6 mm, and the size of the lower single-sealing area in the second direction is greater than 6 mm.
[0014] According to some embodiments of the present utility model, the first airbag and the second airbag are distributed along a third direction. The distance between the first airbag and the second airbag in the third direction is b, and the size of the first encapsulation film and the second encapsulation film in the third direction is y, where 6 mm ≤ b < 0.5y + 3 mm.
[0015] For the battery according to an embodiment of the present utility model, a first battery cell, a second battery cell, and the encapsulation structure of any of the above embodiments, the first battery cell is accommodated in the first accommodation cavity, and the second battery cell is accommodated in the second accommodation cavity.
[0016] The battery according to an embodiment of the present utility model has at least the following beneficial effects: By applying the encapsulation structure of the embodiments of the present application, it is possible to perform liquid injection, air extraction, and double-sealing operations on the first battery cell and the second battery cell respectively, so as to conveniently determine the liquid retention amounts of the first battery cell and the second battery cell respectively, and improve the battery yield.
[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The following further describes the present utility model in conjunction with the accompanying drawings and embodiments, where:
[0019] Figure 1 It is a cross-sectional view of a battery according to an embodiment of the present utility model;
[0020] Figure 2 is Figure 1 a top view of the battery;
[0021] Figure 3 It is a schematic diagram of the upper surface of a separator according to an embodiment of the present utility model;
[0022] Figure 4 is Figure 3 a schematic diagram of the lower surface of the separator in;
[0023] Figure 5 It is a schematic diagram of a part of the dimensions of a battery according to an embodiment of the present utility model.
[0024] Reference numerals:
[0025] Encapsulation structure 10;
[0026] First encapsulation film 100, first accommodation cavity 110, first groove 111, first air bag 120, first main body 130, second main body 140, second encapsulation film 200, second accommodation cavity 210, second groove 211, second air bag 220, third main body 230, fourth main body 240, separator 300, first battery cell 400, second battery cell 500;
[0027] Upper second sealing area 601, lower second sealing area 602, upper first sealing area 603, PP layer 604, lower first sealing area 605. Detailed implementation manners
[0028] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.
[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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 to the present utility model.
[0030] In the description of the present utility model, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0031] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.
[0032] In the description of the present utility model, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0033] Aiming at the problem in the related art that it is difficult to determine the liquid retention amount of each of multiple battery cells in a packaging structure, the present application realizes the secondary packaging of each battery cell by providing air bags separated from each other, which facilitates the determination of the liquid retention amount of each battery cell and improves the product yield.
[0034] The following describes the packaging structure and battery of the embodiments of the present application with reference to the accompanying drawings of the specification. It should be noted that in the drawings, the first direction is shown in the up-down direction, the second direction is shown in the left-right direction, and the third direction is shown in the front-back direction. The first air bag 120 or the second air bag 220 covered is shown by a dashed line in the drawings.
[0035] Refer to Figure 1 and Figure 2, according to the packaging structure 10 of the embodiment of the present utility model, it includes a separator 300, a first packaging film 100 and a second packaging film 200. The first packaging film 100, the separator 300 and the second packaging film 200 are arranged in sequence in the first direction. The first packaging film 100 and the second packaging film 200 are connected to each other. A first accommodation cavity 110 and a first air bag 120 are formed between the first packaging film 100 and the separator 300. The first accommodation cavity 110 is used to accommodate the first battery cell 400. The first air bag 120 is arranged at an interval from the first accommodation cavity 110 and is communicated with the first accommodation cavity 110. A second accommodation cavity 210 and a second air bag 220 are formed between the second packaging film 200 and the separator 300. The second accommodation cavity 210 is used to accommodate the second battery cell 500. The second air bag 220 is arranged at an interval from the second accommodation cavity 210 and is communicated with the second accommodation cavity 210. Wherein, the first air bag 120 and the second air bag 220 are separated from each other. In the second direction, both the first air bag 120 and the second air bag 220 are located on the same side of the first accommodation cavity 110. The first air bag 120 and the second air bag 220 are distributed in the third direction. Any two of the first direction, the second direction and the third direction are perpendicular to each other. The first air bag 120 and the second air bag 220 are separated from each other, and the first air bag 120 and the second air bag 220 are respectively communicated with the first accommodation cavity 110 and the second accommodation cavity 210, so that the first battery cell 400 and the second battery cell 500 can be respectively subjected to liquid injection, air extraction and second sealing operations, so as to facilitate the determination of the liquid retention amounts of the first battery cell 400 and the second battery cell 500 respectively, and improve the product yield.
[0036] Specifically, the first packaging film 100 and the second packaging film 200 can be formed by folding a single packaging film, or can be formed by connecting two opposite packaging films. The first battery cell 400 and the second battery cell 500 do not limit the number of battery cells that the packaging structure 10 of the present application can accommodate. The battery cell located on one side of the separator 300 can be regarded as the first battery cell 400, and the battery cell located on the other side of the separator 300 can be regarded as the second battery cell 500. Wherein, the first accommodation cavity 110 can be formed after the first packaging film 100 is attached to the outer surfaces of the first battery cell 400 and the separator 300. The second accommodation cavity 210 can be formed after the second packaging film 200 is attached to the outer surfaces of the second battery cell 500 and the separator 300. The first air bag 120 and the second air bag 220 are respectively formed by enclosing between the grooves pre-set on the first packaging film 100 and the second packaging film 200 and the separator 300.
[0037] Refer to Figure 1 and Figure 2, in some embodiments, the first airbag 120 is located on one side of the first accommodating cavity 110 in the second direction, the second airbag 220 is located on one side of the second accommodating cavity 210 in the second direction, and relative to the first accommodating cavity 110, the second airbag 220 is on the same side as the first airbag 120 in the second direction, and the second direction is perpendicular to the first direction. Arranging the first airbag 120 and the second airbag 220 on the same side can facilitate liquid injection, air extraction and second sealing operations, so that the operation positions are on the same side. And in the embodiments where the first encapsulation film 100 and the second encapsulation film 200 are formed by folding, the folding position can be arranged on one side of the separator 300 in the first direction.
[0038] Referring Figure 1 and Figure 2 , the separator 300, the first encapsulation film 100 and the second encapsulation film 200 are arranged in sequence along the first direction. The first encapsulation film 100 includes a first main body 130 and a second main body 140. The second main body 140 is connected to one side of the first main body 130 in the second direction. A first accommodating cavity 110 is defined between the first main body 130 and the separator 300, a first airbag 120 is defined between the second main body 140 and the separator 300, and the dimension of the second main body 140 in the third direction is smaller than the dimension of the first main body 130 in the third direction. The first direction, the second direction and the third direction are perpendicular to each other. The function of the first airbag 120 is to accommodate the gas generated during formation and facilitate the subsequent operation of puncturing the airbag for air extraction. The first airbag 120 occupies a relatively small space of the first encapsulation film 100 and does not need to cover the entire first encapsulation film 100 in the third direction. Therefore, by setting the first main body 130 and the second main body 140 with different dimensions, while realizing the setting of the first airbag 120, the consumables of the first encapsulation film 100 can be reduced and the cost of the encapsulation structure 10 can be lowered.
[0039] Similarly, in some embodiments, the second encapsulation film 200 includes a third main body 230 and a fourth main body 240. The fourth main body 240 is connected to one side of the third main body 230 in the second direction. A second accommodating cavity 210 is defined between the third main body 230 and the separator 300, a second airbag 220 is defined between the fourth main body 240 and the separator 300, and the dimension of the fourth main body 240 in the third direction is smaller than the dimension of the third main body 230 in the third direction. By setting the third main body 230 and the fourth main body 240 with different dimensions, while realizing the setting of the second airbag 220, the consumables of the second encapsulation film 200 can be reduced and the cost of the encapsulation structure 10 can be lowered.
[0040] Referring Figure 1 and Figure 2, in an embodiment where the first encapsulation film 100 includes a first main body 130 and a second main body 140, and the second encapsulation film 200 includes a third main body 230 and a fourth main body 240, the second main body 140 and the fourth main body 240 may be arranged side by side in a third direction, such that the second main body 140 and the fourth main body 240 are located on the same side with respect to the first accommodation cavity 110 and the second accommodation cavity 210, and the second main body 140 and the fourth main body 240 share at least part of the space in a second direction. On the basis of reducing consumables, the space utilization rate is improved, making the structure of the encapsulation structure 10 more compact.
[0041] Referring to Figure 1 , in some embodiments, the first accommodation cavity 110 and the second accommodation cavity 210 are arranged side by side in a first direction, such that after the first battery cell 400 and the second battery cell 500 are loaded, the overall shape is uniform and the structure is compact, which can also facilitate the arrangement of the first airbag 120 and the second airbag 220, and reduce the consumables of the first encapsulation film 100 and the second encapsulation film 200. It can be understood that the first accommodation cavity 110 and the second accommodation cavity 210 may overlap in the projection in the first direction within the tolerance range, so that the first battery cell 400 and the second battery cell 500 are opposite to each other.
[0042] Referring to Figure 1 , in some embodiments, a first accommodation groove is provided on the first encapsulation film 100, and a first accommodation cavity 110 is formed between the first accommodation groove and the separator 300. The first accommodation groove is specifically a groove pre-formed on the first encapsulation film 100 by conventional processes such as stamping. The setting of the first accommodation groove can facilitate the placement and positioning of the first battery cell 400 and improve the assembly efficiency.
[0043] Referring to Figure 1 , in some embodiments, a second accommodation groove is provided on the second encapsulation film 200, and a second accommodation cavity 210 is formed between the second accommodation groove and the separator 300. Similarly, the second accommodation groove is specifically a groove pre-formed on the second encapsulation film 200 by conventional processes such as stamping. The setting of the second accommodation groove can facilitate the placement and positioning of the second battery cell 500 and improve the assembly efficiency.
[0044] Such as Figure 5As shown, the first airbag 120 and the second airbag 220 are distributed along the third direction. The first encapsulation film 100 includes an upper two-sealing area 601, and the second encapsulation film 200 includes a lower two-sealing area 602. Both the upper two-sealing area 601 and the lower two-sealing area 602 are connected to the separator 300. The upper two-sealing area 601 and the lower two-sealing area 602 are distributed along the second direction, and the second direction is perpendicular to the third direction. The size of the upper two-sealing area 601 in the second direction is greater than 1.2 mm (i.e., g > 1.2 mm). This is to prevent poor encapsulation caused by the too small width of the upper two-sealing area 601, which is beneficial to preventing battery leakage. The size of the lower two-sealing area 602 in the second direction is greater than 6 mm (i.e., h > 6 mm). This is to prevent the part where the second encapsulation film 200 coincides with the upper two-sealing area 601 from being sealed incorrectly during the encapsulation of the second battery cell 500, and to prevent the electrolyte from not being pumped out subsequently.
[0045] As Figure 5 shown, the distance between the upper two-sealing area 601 and the first airbag 120 in the second direction is a, and a ≥ 12 mm. This can reserve enough width for the two times of two-sealing to ensure the smooth progress of the two-sealing process. The distance between the lower two-sealing area 602 and the second airbag 220 in the second direction is e, and e ≥ 0, ensuring that the two-sealing of the first encapsulation film does not encapsulate to the position of the first airbag.
[0046] The first encapsulation film 100 includes an upper one-sealing area 603, and the second encapsulation film 200 includes a lower one-sealing area 605. The size of the upper one-sealing area 603 in the second direction is greater than 6 mm, and the size of the lower one-sealing area 605 in the second direction is greater than 6 mm. This is to ensure that the one-sealing area has enough width, so as to ensure the sealing performance between the encapsulation film and the separator 300, and further prevent battery leakage.
[0047] As Figure 5 shown, the distance between the first airbag 120 and the second airbag 220 in the third direction is b, and the size of the first encapsulation film 100 and the second encapsulation film 200 in the third direction is y, and 6 mm ≤ b < 0.5y + 3 mm. When b satisfies this parameter range, the encapsulation between the first encapsulation film 100 and the second encapsulation film 200 is not easily affected by each other, and the top and bottom edges encapsulation of the battery is not easily affected.
[0048] Figure 3 and Figure 4 are provided with hatching, but Figure 3 and Figure 4 are not cross-sectional views of the electrode sheets. Figure 3 and Figure 4 In, the area provided with hatching is the area where the PP layer 304 is located. As Figure 3 and Figure 4As shown, the areas of the first encapsulation film 100 that are double-sealed, single-sealed, and corresponding to the first airbag 120 are all provided with a PP layer 604 (polypropylene layer), and the areas of the second encapsulation film 200 that are double-sealed, single-sealed, and corresponding to the second airbag 220 are all provided with a PP layer 604. In this way, when the encapsulation head contacts the area of the encapsulation film provided with the PP layer, the PP layer will melt, and after the PP layer 604 solidifies again, the bonding between the encapsulation film and the separator 300 can be achieved.
[0049] For the battery according to the embodiment of the present invention, the first battery cell 400, the second battery cell 500, and the encapsulation structure 10 of any of the above embodiments, the first battery cell 400 is accommodated in the first accommodation cavity 110, and the second battery cell 500 is accommodated in the second accommodation cavity 210. By applying the encapsulation structure 10 of the embodiment of the present application, the operations of injecting liquid, evacuating air, and double-sealing can be respectively performed on the first battery cell 400 and the second battery cell 500, so as to conveniently determine the liquid retention amounts of the first battery cell 400 and the second battery cell 500 respectively, and improve the battery yield.
[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.
Claims
1. A packaging structure, characterized in that: A battery cell comprising a separator, a first packaging film and a second packaging film, wherein the first packaging film, the separator and the second packaging film are sequentially arranged along a first direction, the first packaging film and the second packaging film are connected to each other, a first accommodating cavity and a first air bag are formed between the first packaging film and the separator, the first accommodating cavity is used to accommodate a first battery cell, the first air bag is spaced apart from the first accommodating cavity, and the first air bag is communicated with the first accommodating cavity; a second accommodating cavity and a second air bag are formed between the second packaging film and the separator, the second accommodating cavity is used to accommodate a second battery cell, the second air bag is spaced apart from the second accommodating cavity, and the second air bag is communicated with the second accommodating cavity; Among them, the first air bag and the second air bag are separated from each other, the first air bag and the second air bag are located on the same side of the first accommodating cavity in the second direction, the first air bag and the second air bag are distributed along the third direction, and any two of the first direction, the second direction and the third direction are perpendicular to each other.
2. The packaging structure according to claim 1, characterized in that: The separator, the first packaging film and the second packaging film are sequentially arranged along the first direction, the first packaging film comprises a first main body and a second main body, the second main body is connected to one side of the first main body in the second direction, the first accommodating cavity is defined between the first main body and the separator, the first air bag is defined between the second main body and the separator, and the size of the second main body in the third direction is smaller than the size of the first main body in the third direction; And / or, the second packaging film includes a third body and a fourth body, the fourth body is connected to one side of the third body in the second direction, the second accommodating cavity is defined between the third body and the partition, the second air bag is defined between the fourth body and the partition, and the size of the fourth body in the third direction is smaller than the size of the third body in the third direction.
3. The packaging structure according to claim 1, characterized in that: The separator, the first packaging film and the second packaging film are sequentially arranged along the first direction, the first packaging film comprises a first main body and a second main body, the second main body is connected to one side of the first main body in the second direction, the first accommodating cavity is defined between the first main body and the separator, the first air bag is defined between the second main body and the separator, and the size of the second main body in the third direction is smaller than the size of the first main body in the third direction; The second packaging film comprises a third body and a fourth body, the fourth body is connected to one side of the third body in the second direction, the second accommodating cavity is defined between the third body and the partition, the second air bag is defined between the fourth body and the partition, and the size of the fourth body in the third direction is smaller than the size of the third body in the third direction; Wherein, the second body and the fourth body are arranged side by side in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.
4. The packaging structure according to any one of claims 1 to 3, characterized in that: The first accommodating cavity and the second accommodating cavity are arranged side by side in the first direction.
5. The packaging structure according to any one of claims 1 to 3, characterized in that: The first packaging film is provided with a first accommodating groove, and the first accommodating cavity is formed between the first accommodating groove and the partition; and / or the second packaging film is provided with a second accommodating groove, and the second accommodating cavity is formed between the second accommodating groove and the partition.
6. The packaging structure according to claim 1, characterized in that: The first airbag and the second airbag are distributed along a third direction, the first packaging film includes two upper sealing areas, the second packaging film includes two lower sealing areas, the two upper sealing areas and the two lower sealing areas are both connected to the separator, the two upper sealing areas and the two lower sealing areas are distributed along a second direction, and the second direction is perpendicular to the third direction; The size of the upper two sealing areas in the second direction is greater than 1.2 mm, and the size of the lower two sealing areas in the second direction is greater than 6 mm.
7. The packaging structure according to claim 1, characterized in that: The first airbag and the second airbag are distributed along a third direction, the first packaging film includes two upper sealing areas, the second packaging film includes two lower sealing areas, the two upper sealing areas and the two lower sealing areas are both connected to the separator, the two upper sealing areas and the two lower sealing areas are distributed along a second direction, and the second direction is perpendicular to the third direction; The distance between the upper second sealing area and the first air bag in the second direction is a, a≥12mm; the distance between the lower second sealing area and the second air bag in the second direction is e, e≥0.
8. The packaging structure according to claim 1, characterized in that: The first air pockets and the second air pockets are distributed along a third direction, the first packaging film includes an upper sealing area, the second packaging film includes a lower sealing area, and the second direction is perpendicular to the third direction; The size of the upper sealing area in the second direction is greater than 6 mm, and the size of the lower sealing area in the second direction is greater than 6 mm.
9. The packaging structure according to claim 1, characterized in that: The first airbag and the second airbag are distributed along a third direction, the distance between the first airbag and the second airbag in the third direction is b, the size of the first packaging film and the second packaging film in the third direction is y, 6mm≤b<0.5y+3mm.
10. A battery, characterized in that The invention comprises a first battery cell, a second battery cell and the packaging structure according to any one of claims 1 to 9, wherein the first battery cell is accommodated in the first accommodation cavity, and the second battery cell is accommodated in the second accommodation cavity.