Soft package battery with wrapped box type packaging structure and preparation process of soft package battery

Abstract

The invention relates to the technical field of soft package batteries, in particular to a soft package battery with a wrapped box type packaging structure and a preparation process thereof.The soft package battery comprises a box type main body used for containing a plurality of battery cells, and the two ends of the box type main body are open and provided with a first sealing cover and a second sealing cover respectively; the first sealing cover and the second sealing cover are both provided with pits, the pits are located in the box-shaped main body, first sealing layers are arranged between the outer side walls of the pits and the inner side walls of the box-shaped main body, the pits located in the first sealing cover are provided with protrusions, and the protrusions are provided with a plurality of receding openings corresponding to the number of battery cell tabs. And a second sealing layer is arranged between the inner side wall of the bulge and the battery cell tab. The battery cell can be accommodated without depending on the punching pit depth of the aluminum plastic film, the structure is simple, the manufacturing is convenient, and the manufacturing cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of soft-pack batteries, and in particular to a soft-pack battery with a wrapped box-type packaging structure and a preparation process thereof. Background Art

[0002] The traditional soft-pack battery packaging structure is to first use a stamping die to process one or more pits of different lengths, widths and depths on the aluminum-plastic film, put the bare battery cell as the battery body into the pit, and use thermal packaging equipment to achieve packaging on both sides or even multiple sides of the aluminum-plastic film around the battery body. Due to the limitations of the tensile and ductile properties of the aluminum-plastic film material itself, there is a limit to the pit depth. When it approaches or exceeds this pit depth, the aluminum-plastic film after the pit will crack or even break, which will lead to sealing failure and irreversible impact on battery performance. Therefore, designing a soft-pack battery structure that is not limited by the pit depth of the aluminum-plastic film and is not limited by the battery size is a technical problem that company R&D personnel urgently need to solve. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present application provides a soft-pack battery with a wrapped box-type packaging structure and a preparation process thereof.

[0004] The above invention objectives of the present application are achieved through the following technical solutions: In the first aspect, the present invention provides a soft-pack battery with a wrapped box-type packaging structure, comprising a box-type main body for accommodating a plurality of battery cells, the box-type main body being open at both ends and respectively provided with a first cover and a second cover, the first cover and the second cover being both provided with a pit, the pit being located inside the box-type main body, a first sealing layer being provided between an outer wall of the pit and an inner wall of the box-type main body, the pit located in the first cover being provided with a protrusion, the protrusion being provided with a plurality of make way openings corresponding to the number of battery cell tabs, and a second sealing layer being provided between an inner wall of the protrusion and the battery cell tabs.

[0005] By adopting the above technical scheme, a box-type main body with openings at both ends is matched with a first cover and a second cover, and cooperates with the first cover and the second cover to form a box-type packaging structure for accommodating battery cells. This structure can complete the complete battery packaging without relying on the depth of the punching holes of the aluminum-plastic film to accommodate the battery cells. The size of the box-type packaging structure can be flexibly adjusted according to the size of the battery cells or the number of battery cells, eliminating the problem of aluminum-plastic film damage caused by excessively deep punching holes. At the same time, by arranging protrusions and concessions on the pits of the first cover, the battery cell ears can be led out and the position of the battery cell ears can be adapted. In addition, by arranging the second sealing layer between the inner side wall of the protrusion and the battery cell ears, the sealing at the battery cell ears can be guaranteed.

[0006] In a preferred example, the present application can be further configured as follows: the pits located at the first cover and the pits located at the second cover are both provided with protrusions.

[0007] By adopting the above technical solution, protrusions are arranged on the pits located on the first cover and the second cover, and corresponding clearance openings can be provided for battery cells with tabs at both ends, so that the battery cell tabs can be smoothly led out, which is suitable for the working conditions of battery cells with tabs at both ends.

[0008] In a preferred example, the present application can be further configured as follows: the first sealing layer and the second sealing layer are both formed by hot melting.

[0009] By adopting the above technical solution, the hot melt sealing has strong adaptability, good sealing effect and high sealing efficiency, and is suitable for the working conditions of soft-pack batteries.

[0010] In a preferred example, the present application can be further configured as follows: the first sealing layer and the second sealing layer are both annular in shape.

[0011] By adopting the above technical solution, an annular first sealing layer and a second sealing layer are used to ensure complete sealing.

[0012] In a preferred example, the present application can be further configured as follows: the box-shaped body, the first cover and the second cover are all aluminum-plastic films.

[0013] By adopting the above technical solution and using aluminum-plastic film material, it is suitable for the working conditions of soft-pack batteries.

[0014] In a preferred example, the present application can be further configured as follows: the recess and the protrusion are both formed by stamping.

[0015] By adopting the above technical solution and a highly automated and repeatable stamping method, the structural consistency and stability of each pit and protrusion can be ensured, thereby improving the production quality of soft-pack batteries.

[0016] In a preferred example, the present application can be further configured as follows: the box-shaped body is installed on the outside of the battery cell in a wrapped manner.

[0017] By adopting the above technical solution and wrapping the battery cell with aluminum-plastic film, a box-shaped body without punching holes can be formed to ensure the consistency and stability of the aluminum-plastic film structure at the battery cell body. The structure is simple and practical, and the production is convenient and cost-effective.

[0018] In a preferred example, the present application can be further configured as follows: a third sealing layer is provided at the side seal of the box-shaped body by hot-melt method.

[0019] By adopting the above technical solution, after the aluminum-plastic film is wrapped, a third sealing layer is formed by hot melting to complete the hot melt packaging, thereby improving the sealing effect of the box-type main body, which is suitable for the working conditions of soft-pack batteries.

[0020] In a preferred example, the present application can be further configured as follows: the box-type body and the first cover, the box-type body and the second cover, and the side seals of the box-type body itself are overlapped and fixed to each other by folding.

[0021] By adopting the above technical solution, after the box-type main body and the first cover, the box-type main body and the second cover are sealed by the first sealing layer, and the side seal of the box-type main body itself is sealed by the third sealing layer, they are folded and overlapped and fixed to each other, which can further improve the sealing performance of the packaging structure and reduce the size of the packaging structure, that is, the overall size of the battery is reduced, thereby optimizing the packaging structure space.

[0022] In a second aspect, the present invention provides a process for preparing a soft-pack battery with a wrapped box-type packaging structure, comprising the following steps: According to the requirements of battery cell size, prepare aluminum-plastic film of corresponding size; The battery core is wrapped with an aluminum-plastic film, compacted and fixed on the outside, and hot-melt-sealed on the side to form the box-shaped body, and the hot-melt-sealing temperature is 85° C.-300° C.; The first cover and the second cover are prepared by punching holes in an aluminum-plastic film, and the depth of the holes is greater than 0.5 mm; The first cover and the second cover are respectively assembled with the box-type main body and hot-melt packaged to form a soft-pack battery with a wrapped box-type packaging structure, and the hot-melt temperature is 85°C-300°C.

[0023] By adopting the above technical scheme, during the preparation process, the size of the aluminum-plastic film is determined according to the size of the battery cell to ensure that the aluminum-plastic film can completely wrap the battery cell and leave enough margin for subsequent hot-melt packaging. After the battery cell is completely wrapped by the aluminum-plastic film, it is fixed by external compaction to ensure a tight bond between the battery cell and the aluminum-plastic film. Subsequently, after assembling with the first cover and the second cover formed by the punching pit and hot-melt packaging, the manufacture of the soft-pack battery with a wrapped box-type packaging structure is completed, thereby achieving efficient, precise and reliable manufacturing of the soft-pack battery with a wrapped box-type packaging structure.

[0024] In a preferred example, the present application can be further configured as follows: the battery cell is prepared by stacking using a stacking machine or by a winding process.

[0025] By adopting the above technical solution, it can adapt to the working conditions of various battery cells.

[0026] In a preferred example, the present application can be further configured as follows: before the aluminum-plastic film is used to wrap the battery cell, a pressing claw mechanism is used to shape and press the aluminum-plastic film.

[0027] By adopting the above technical solution, it is possible to ensure that the battery cells are tightly and evenly wrapped, reduce the adjustment time and error rate in the packaging process, and improve the packaging efficiency and packaging quality.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. The battery body adopts a wrapped box design, which does not require punching out a pit on the aluminum-plastic film of the main body. The structure is simplified, the production is convenient, and the required cost is low.

[0029] 2. It is not limited by the depth of the aluminum-plastic film, eliminating the hidden dangers of cracks or damage to the aluminum-plastic film caused by the pits.

[0030] 3. The thickness of the battery can be increased by thickening a single bare cell or continuously stacking multiple bare cells in series and parallel, which can reduce the length and width of the battery accordingly, making battery production operations more convenient and facilitating the improvement of efficiency and pass rate.

[0031] 4. This packaging structure can be used to package various bare cells in series, parallel or series-parallel, and has good versatility.

[0032] 5. During the preparation process, the size of the aluminum-plastic film is determined according to the size of the battery cell to ensure that the aluminum-plastic film can completely wrap the battery cell and leave enough margin for subsequent hot-melt packaging. After the battery cell is completely wrapped by the aluminum-plastic film, it is fixed by external compaction to ensure a close bond between the battery cell and the aluminum-plastic film. Subsequently, the first cover and the second cover formed by the punching pit are assembled and hot-melt packaged to complete the manufacture of the soft-pack battery with a wrapped box-type packaging structure, thereby achieving efficient, precise and reliable manufacturing of the soft-pack battery with a wrapped box-type packaging structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of a first cover and a second cover in an embodiment of the present application; Figure 2 is a cross-sectional schematic diagram of a soft-pack battery of a wrapped box-type packaging structure in an embodiment of the present application when the sealing edge is not cut off; Figure 3 This is a schematic diagram of the overall structure of a soft-pack battery with a wrapped box-type packaging structure in one embodiment of the present application when the sealing edge is not cut off; Figure 4 This is a schematic structural diagram of a first cover and a second cover adapted for a double-ended tab battery cell in one embodiment of the present application; Figure 5 It is a cross-sectional schematic diagram of a soft-pack battery with a wrapped box-type packaging structure suitable for a double-ended tab battery cell in one embodiment of the present application; Figure 6 It is a schematic diagram of the overall structure of a soft-pack battery with a wrapped box-type packaging structure suitable for a double-ended tab battery cell in one embodiment of the present application; Figure 7 It is a schematic diagram of the process of fixing the side seal of the box-shaped body itself and the box-shaped body and the first cover or the second cover by folding in an embodiment of the present application; Figure 8 This is a flow chart for preparing a soft-pack battery using a wound cell for a wrapped box-type packaging structure in one embodiment of the present application; Fig. 9 It is a flow chart for preparing a soft-pack battery using a laminated battery cell for a wrapped box-type packaging structure in one embodiment of the present application.

[0034] Figure numerals: 1, box-shaped body; 2, first sealing cover; 3, second sealing cover; 4, pit; 5, first sealing layer; 6, protrusion; 7, pole ear; 8, give way; 9, second sealing layer; 10, sealant; 11, third sealing layer. DETAILED DESCRIPTION

[0035] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0036] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0037] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0038] The following describes a soft-pack battery with a wrapped box-type packaging structure and its preparation process of the present application with reference to the accompanying drawings.

[0039] Reference Figures 1 to 7In a first aspect, the present application provides a soft-pack battery with a wrapped box-type packaging structure, comprising a box-type main body 1 for accommodating a plurality of battery cells, the box-type main body 1 having openings at both ends and respectively provided with a first cover 2 and a second cover 3, the first cover 2 and the second cover 3 both being provided with a pit 4, the pit 4 being located inside the box-type main body 1, a first sealing layer 5 being provided between an outer wall of the pit 4 and an inner wall of the box-type main body 1, a protrusion 6 being provided on the pit 4 located at the first cover 2, a plurality of make way openings 8 being provided on the protrusion 6 corresponding to the number of battery cell tabs 7, a second sealing layer 9 being provided between the inner wall of the protrusion 6 and the battery cell tabs 7, wherein the box-type main body 1 having openings at both ends is matched with the first cover 2 and the second cover 3, and cooperates with the first The first sealing layer 5 is arranged between the pit 4 provided on both the cover 2 and the second cover 3 and the box-type main body 1 to form a box-type packaging structure for accommodating the battery cell. The structure can complete the complete battery packaging without relying on the depth of the pit punched in the aluminum-plastic film to accommodate the battery cell. The size of the box-type packaging structure can be flexibly adjusted according to the size of the battery cell or the number of battery cells, eliminating the problem of damage to the aluminum-plastic film caused by excessively deep pits. At the same time, by arranging a protrusion 6 and a clearance port 8 on the pit 4 of the first cover 2, the battery cell tab 7 can be led out and the position of the battery cell tab 7 can be adapted. In addition, by arranging the second sealing layer 9 between the inner side wall of the protrusion 6 and the battery cell tab 7, the sealing at the battery cell tab 7 can be guaranteed.

[0040] The box-shaped body 1, the first cover 2 and the second cover 3 are all made of aluminum-plastic films to be suitable for the working conditions of soft-pack batteries.

[0041] It should be noted that the battery cell packaged inside the box-type main body 1 can be a single bare battery cell, or multiple bare batteries connected in series, in parallel, or in series and parallel, to reflect the versatility of the wrapped box-type packaging structure, which is not limited here.

[0042] It should also be noted that, usually, a sealant 10 is provided at the cell tab 7 , and a second sealing layer 9 can be provided between the inner wall of the protrusion 6 and the sealant 10 of the cell tab 7 to achieve a secondary sealing effect.

[0043] In addition, in one embodiment, if Figure 4 , Figure 5 and Figure 6 As shown, the pits 4 located on the first cover 2 and the second cover 3 are both provided with protrusions 6. Protrusions 6 are both provided on the pits 4 located on the first cover 2 and the second cover 3. For the battery cells with pole ears 7 at both ends, corresponding clearance openings 8 can be provided to enable the battery cell pole ears 7 to be smoothly led out, which is suitable for the working conditions of the battery cells with pole ears 7 at both ends.

[0044] Preferably, the first sealing layer 5 and the second sealing layer 9 are both formed by hot-melt sealing, which has strong adaptability, good sealing effect and high sealing efficiency, and is suitable for the working conditions of soft-pack batteries.

[0045] Preferably, the first sealing layer 5 and the second sealing layer 9 are both annular in shape. By using the annular first sealing layer 5 and the second sealing layer 9, complete sealing between the packaging structure and the battery cell can be ensured.

[0046] Preferably, the pits 4 and protrusions 6 are formed by stamping. By adopting a stamping method with high automation and repeatability, the structural consistency and stability of each pit 4 and protrusion 6 can be ensured, thereby improving the production quality of soft-pack batteries.

[0047] In addition, the box-type main body 1 is installed on the outside of the battery cell in a wrapped manner, and the battery cell is wrapped with an aluminum-plastic film, so that a box-type main body 1 without punching holes can be formed to ensure the consistency and stability of the aluminum-plastic film structure at the battery cell body. The structure is simple and practical, and the production is easy and low-cost.

[0048] It should be noted that the specific manufacturing process of the soft-pack battery of the wrapped box-type packaging structure of the present application is: first, the bare battery cell is wrapped with an aluminum-plastic film of corresponding size, and then the side is partially hot-melt packaged and the excess aluminum-plastic film is cut off to form a box-type main body 1, and then the matching first cover 2 and second cover 3 are made by stamping the aluminum-plastic film, and the first cover 2 and the second cover 3 are combined with the box-type main body 1 by hot-melt packaging of the aluminum-plastic film to complete the complete battery packaging. Specifically, the pit 4 of the first cover 2 adopts a mode of stamping from the nylon layer of the aluminum-plastic film to the PP layer, so as to facilitate the formation of the pit 4 with the PP layer as the outer wall, and the PP layer of the outer wall of the pit 4 and the internal PP layer of the box-type main body 1 are subsequently The first annular sealing layer 5 can be formed by hot-melting through the packaging mechanism, and the protrusion 6 is formed by stamping the PP layer of the aluminum-plastic film to the nylon layer, so as to form the protrusion 6 with the PP layer as the inner wall. The bottom of the protrusion 6 is provided with corresponding clearance openings 8 according to the size and quantity of the pole ear 7 and the sealant 10, so as to facilitate the pole ear 7 and the sealant 10 to pass through the clearance openings 8. After passing through, the inner wall PP layer of the protrusion 6 and the sealant 10 are hot-melted by the packaging mechanism to form the second sealing layer 9. The pit 4 of the second cover 3 is the same as the pit 4 of the first cover 2 in structure and manufacturing process, and under the working condition of the battery cell with the pole ears 7 at both ends, the protrusion 6 of the second cover 3 is the same as the protrusion 6 of the first cover 2 in structure and manufacturing process.

[0049] Furthermore, a third sealing layer 11 is provided at the side seal of the box-type main body 1 by hot melting. After the aluminum-plastic film is wrapped, the third sealing layer 11 is formed by hot melting to complete the hot melting packaging, thereby improving the sealing effect of the box-type main body 1 and being suitable for the working conditions of soft-pack batteries.

[0050] Furthermore, the box-type main body 1 and the first cover 2, as well as the box-type main body 1 and the second cover 3, and the side seal of the box-type main body 1 itself are all overlapped and fixed to each other by folding. After the box-type main body 1 and the first cover 2, the box-type main body 1 and the second cover 3 are sealed by the first sealing layer 5, and the side seal of the box-type main body 1 itself is sealed by the third sealing layer 11, they are folded and overlapped and fixed to each other, which can further improve the sealing of the packaging structure and reduce the size of the packaging structure at the same time, that is, the overall size of the battery is reduced, which has the effect of optimizing the packaging structure space. The folding method can be a method of referring to the folding method of the cigarette box, or other folding methods that can achieve overlap and fixation, which is not limited here.

[0051] like Figure 8 and Fig. 9 As shown, the second aspect of the present application provides a preparation process of a soft-pack battery with a wrapped box-type packaging structure, comprising the following steps: According to the requirements of battery cell size, prepare aluminum-plastic film of corresponding size; The battery core is wrapped with an aluminum-plastic film, compacted and fixed on the outside, and hot-melt-sealed on the side to form a box-shaped body 1, and the hot-melt-sealing temperature is 85° C.-300° C.; The first cover 2 and the second cover 3 are prepared by punching holes in the aluminum-plastic film, and the depth of the punching holes is greater than 0.5 mm; The first cover 2 and the second cover 3 are respectively assembled with the box-type main body 1 and hot-melt-sealed to form a soft-pack battery with a wrapped box-type packaging structure, and the hot-melt temperature is 85°C-300°C.

[0052] In the preparation process of the present invention, the size of the aluminum-plastic film is determined according to the size of the battery cell to ensure that the aluminum-plastic film can completely wrap the battery cell and leave enough margin for subsequent hot-melt packaging. After the battery cell is completely wrapped by the aluminum-plastic film, it is fixed by external compaction to ensure a close combination between the battery cell and the aluminum-plastic film. Subsequently, the first cover 2 and the second cover 3 formed by the punching pits are assembled and hot-melt packaged to complete the manufacture of the soft-pack battery with a wrapped box-type packaging structure, thereby achieving efficient, precise and reliable manufacturing of the soft-pack battery with a wrapped box-type packaging structure. After the soft-pack battery with a wrapped box-type packaging structure is formed, subsequent processes such as insulation short-circuit test, liquid injection, and formation are carried out in sequence.

[0053] Among them, the battery cell can be prepared by stacking with a stacking machine or by a winding process, so as to reflect the strong versatility of the wrapped box type packaging structure and be able to adapt to the working conditions of various battery cells.

[0054] Furthermore, before the aluminum-plastic film is used to wrap the battery cell, a pressing claw mechanism is used to shape and press the aluminum-plastic film, which can ensure that the battery cell is tightly and evenly wrapped, reduce the adjustment time and error rate during the packaging process, and improve the packaging efficiency and packaging quality.

[0055] It should be noted that the pressing claw mechanism is a device specially used to shape and press soft materials such as aluminum-plastic films. It usually includes a group of retractable pressing claws, which can be adjusted according to the shape and size of the battery cell to ensure that the aluminum-plastic film can fit tightly to the surface of the battery cell. Its specific structure and working principle are common knowledge to technicians in this field and will not be elaborated here.

[0056] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A soft-pack battery with a wrapped box-type packaging structure, characterized in that: include: A box-shaped body (1) for accommodating a plurality of battery cells, the box-shaped body (1) being open at both ends and being respectively provided with a first cover (2) and a second cover (3), the first cover (2) and the second cover (3) being both provided with a recess (4), the recess (4) being located inside the box-shaped body (1), a first sealing layer (5) being provided between an outer wall of the recess (4) and an inner wall of the box-shaped body (1), the recess (4) located on the first cover (2) being provided with a protrusion (6), the protrusion (6) being provided with a plurality of clearance openings (8) corresponding to the number of battery cell tabs (7), and a second sealing layer (9) being provided between an inner wall of the protrusion (6) and the battery cell tabs (7).

2. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 1, characterized in that: The recess (4) located on the first cover (2) and the recess (4) located on the second cover (3) are both provided with protrusions (6).

3. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 1, characterized in that: The first sealing layer (5) and the second sealing layer (9) are both formed by hot melting.

4. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 1, characterized in that: The first sealing layer (5) and the second sealing layer (9) are both annular in shape.

5. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 1, characterized in that: The box-shaped body (1), the first sealing cover (2) and the second sealing cover (3) are all made of aluminum-plastic films.

6. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 1, characterized in that: The concave pit (4) and the protrusion (6) are both formed by stamping.

7. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 5, characterized in that: The box-shaped main body (1) is installed on the outside of the battery cell in a wrapping manner.

8. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 7, characterized in that: A third sealing layer (11) is provided at the side seal of the box-shaped main body (1) by means of hot melting.

9. A soft-pack battery with a wrapped box-type packaging structure as claimed in claim 8, characterized in that: The box-shaped body (1) and the first cover (2), the box-shaped body (1) and the second cover (3), and the side seals of the box-shaped body (1) are all overlapped and fixed to each other by folding.

10. A process for preparing a soft-pack battery with a wrapped box-type packaging structure as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: According to the requirements of battery cell size, prepare aluminum-plastic film of corresponding size; The battery core is wrapped with an aluminum-plastic film, compacted and fixed on the outside, and hot-melt-sealed on the side to form the box-shaped body (1), and the hot-melt-sealing temperature is 85° C.-300° C.; The first cover (2) and the second cover (3) are prepared by punching holes in an aluminum-plastic film, and the depth of the punching holes is greater than 0.5 mm; The first sealing cover (2) and the second sealing cover (3) are respectively assembled with the box-type main body (1) and hot-melt-sealed to form a soft-pack battery with the wrapped box-type packaging structure, with the hot-melt temperature being 85° C.-300° C.

11. The process for preparing a soft-pack battery with a wrapped box-type packaging structure according to claim 10, characterized in that: The battery cells are prepared by stacking them using a stacking machine or by a winding process.

12. The process for preparing a soft-pack battery with a wrapped box-type packaging structure according to claim 10, characterized in that: Before the aluminum-plastic film is used to wrap the battery cell, a pressing claw mechanism is used to shape and press the aluminum-plastic film.

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