CN219610597U - Easily tear subsides and have its battery - Google Patents

Abstract

The utility model provides an easy-tearing paste and a battery with the same, wherein the easy-tearing paste comprises a bottom film, a first side film, a second side film, a third side film and a fourth side film which are integrally connected, the first side film and the second side film are respectively arranged on two sides of the bottom film in a first direction, and the third side film and the fourth side film are respectively arranged on two sides of the bottom film in a second direction perpendicular to the first direction; the battery cell comprises a battery cell, a first side film, a second side film, a third side film and a fourth side film, wherein the front faces of the first side film, the second side film, the third side film and the fourth side film are respectively provided with a first bonding layer used for bonding with the battery cell, the front face of a bottom film can be bonded with the back face of the battery cell, and a first easy-tearing line extending along the second direction is arranged between the first side film and the bottom film. The technical scheme provided by the utility model can solve the problem of low bonding efficiency of the easy-to-tear adhesive in the related technology.

Description

Easily tear subsides and have its battery

Technical Field

The utility model relates to the technical field of battery packaging, in particular to an easy-tearing adhesive and a battery with the same.

Background

In conventional battery packaging scheme, the back and the two sides of the battery cell are wrapped by the easy-to-tear paste, tail gummed paper and head gummed paper are respectively stuck to the lower end and the upper end of the battery cell, a lifting handle is arranged on the front of the battery cell, and when the battery cell is subjected to after-sales maintenance and disassembly, the lifting handle is pulled up from the front of the battery cell to take out the battery cell from the easy-to-tear paste.

In the related art, the easy tearing paste comprises a bottom film and a lifting film which are arranged in a split mode, the lifting film is located between the bottom film and the battery cell, the bottom film comprises a main face bonding part, a side face bonding part and an end face bonding part, the lifting film comprises a lifting part and a bonding part, the lifting film is connected with the bonding part, the bonding part is bonded to the battery cell, and the lifting part is used for separating the battery cell from the bottom film through the bonding part.

However, the base film and the pulling film of the easy-to-tear tape in the related art are of a split structure, and the base film and the pulling film of the split structure are required to be designed and developed independently and are required to be bonded independently, so that the manufacturing process of the easy-to-tear tape is complex and the bonding efficiency is low.

Disclosure of Invention

The utility model provides an easy-to-tear patch and a battery with the same, which are used for solving the problem of low bonding efficiency of the easy-to-tear patch in the related technology.

According to an aspect of the present utility model, there is provided a peel-off patch including a base film, a first side film, a second side film, a third side film, and a fourth side film integrally connected, the first side film and the second side film being disposed on both sides of the base film in a first direction, respectively, the third side film and the fourth side film being disposed on both sides of the base film in a second direction perpendicular to the first direction, respectively; the battery cell comprises a battery cell, a first side film, a second side film, a third side film and a fourth side film, wherein the front faces of the first side film, the second side film, the third side film and the fourth side film are respectively provided with a first bonding layer used for bonding with the battery cell, the front face of a bottom film can be bonded with the back face of the battery cell, and a first easy-tearing line extending along the second direction is arranged between the first side film and the bottom film.

Further, be provided with the cutting structure that extends along first direction on the first side membrane, the both ends of cutting structure extend to the both sides of first side membrane respectively, the cutting structure is cut apart first side membrane into first carrying and is drawn membrane and second carrying and draw membrane, first easy tear line setting is between first carrying and drawing membrane and the backing film, first adhesive linkage includes first glue film and second glue film, first glue film and second glue film all extend along the second direction and set up along first direction interval, the front of first carrying and drawing the membrane is provided with first glue film and second glue film, the front of second carrying and drawing the membrane is provided with the second glue film, the second glue film is located the one side of keeping away from the backing film of first glue film.

Further, the cutting structure comprises a plurality of grooves and a plurality of protrusions which are arranged in the grooves in a one-to-one correspondence manner, the grooves are arranged on the first lifting film and are arranged at intervals along the first direction, the protrusions are arranged on the second lifting film and are arranged at intervals along the first direction, and part of the outer side wall of each protrusion is connected with part of the inner wall of the corresponding groove.

Further, two cutting structures are arranged on the first side film and are arranged at intervals in the second direction, and the two cutting structures divide the first side film into two first lifting films and a second lifting film positioned between the two first lifting films; and/or the ratio of the area of the second pull film to the area of the first pull film is less than or equal to 0.5.

Further, the third side film corresponds the head setting of electric core, and the fourth side film corresponds the afterbody setting of electric core, is provided with the second of extending along first direction between third side film and the carrier film and easily tears the line, is provided with the third of extending along first direction between fourth side film and the carrier film and easily tears the line, and second easily tears the line and all extends to the both sides of carrier film in first direction.

Further, the front surface of the base film is provided with a second adhesive layer, and the adhesiveness of the first adhesive layer is greater than that of the second adhesive layer.

Further, the third side film corresponds to the head of the battery cell, the fourth side film corresponds to the tail of the battery cell, the front faces of the first side film, the second side film and the fourth side film are all provided with third bonding layers used for bonding with the battery cell, the third bonding layers are located on one side, close to the bottom film, of the first bonding layers, and the viscosity of the third bonding layers is smaller than that of the first bonding layers.

Further, the thickness dimension of the easy-tearing paste is between 0.03mm and 0.2 mm; and/or the first side film, the second side film, the third side film and the fourth side film are provided with a first bending line and a second bending line, the first bending line is arranged corresponding to the edge of the back surface of the battery cell, and the second bending line is arranged corresponding to the edge of the front surface of the battery cell.

Further, the third side film is arranged corresponding to the head of the battery cell, the fourth side film is arranged corresponding to the tail of the battery cell, the easy-to-tear adhesive further comprises a heat dissipation coating, and the heat dissipation coating is arranged on the back of the third side film.

Further, a fourth adhesive layer is arranged on the back surface of the bottom film; and/or the edge of the side of the first side film far away from the bottom film is provided with a glue-free area.

According to another aspect of the present utility model, there is provided a battery including: a battery cell; the battery cell is wrapped by the easy-to-tear paste, and the easy-to-tear paste is provided by the battery cell.

By applying the technical scheme of the utility model, the easy-tearing adhesive comprises the bottom film, the first side film, the second side film, the third side film and the fourth side film which are integrally connected, and as the first side film, the second side film, the third side film and the fourth side film are all provided with the first bonding layer used for bonding with the battery cell, when the battery is assembled, the battery cell is placed on the easy-tearing adhesive, the back surface of the battery cell faces the front surface of the bottom film, the side surface of the battery cell is wrapped by the first side film, the second side film, the third side film and the fourth side film and is bonded and connected with the battery cell through the first bonding layer, the back surface, two sides and two ends of the battery cell are protected by the easy-tearing adhesive which is integrally connected, and when the battery cell is disassembled after sale, the battery cell is separated from the bottom film by lifting the first bonding layer through the first easy-tearing line due to the first easy-tearing line. The protection to the back, both sides and both ends of electric core can be realized to the easy subsides that tear to when the maintenance was dismantled after selling, with electric core and carrier film separation through carrying the first side membrane, because easy subsides are connected as an organic whole, only need the preparation processing easily tear and paste a product, and simplify the bonding step of easily tearing subsides, improve the bonding efficiency of easily tearing subsides.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural diagram of a peel-off patch according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a peel-off sticker according to an embodiment of the present utility model;

FIG. 3 shows a partial enlarged view at A in FIG. 2;

fig. 4 shows a schematic use diagram of a peel-off tape with a first pull-up film separated from the front surface of a battery cell according to an embodiment of the present utility model;

fig. 5 shows a schematic use diagram of a tearable patch provided by the embodiment of the present utility model, where the first pull film and the second pull film are both separated from the front surface of the electrical core;

fig. 6 is a schematic diagram of the use of the easy-to-tear tape provided in the embodiment of the present utility model for pulling the first pulling film to separate the battery cell from the Yu Yi tape thereof;

fig. 7 is a schematic view showing the structure of a battery according to an embodiment of the present utility model;

fig. 8 shows an exploded view of a battery provided by an embodiment of the present utility model;

fig. 9 is a schematic view showing another structure of a battery provided by an embodiment of the present utility model;

FIG. 10 shows a cross-sectional view of a peel-off patch provided by an embodiment of the present utility model;

fig. 11 shows another cross-sectional view of the peel-off patch provided by the embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. the adhesive tape is easy to tear; 11. a base film; 12. a first side film; 121. a first pull film; 122. a second pull film; 123. a glue-free region; 13. a second side film; 14. a third side film; 141. an avoidance groove; 15. a fourth side film;

21. a first adhesive layer; 211. a first adhesive layer; 212. a second adhesive layer; 22. a second adhesive layer; 23. a third adhesive layer; 24. a heat-dissipating coating; 25. an ink layer;

31. a first easy-to-tear line;

41. cutting off the structure; 411. a protrusion;

51. a first bending line; 52. a second bending line;

60. a battery cell; 61. a cell body; 62. a protective plate; 63. foam gummed paper; 64. top sealing gummed paper; 65. and (5) coating the board gummed paper.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 11, the embodiment of the present utility model provides a peel-off tape, which includes a base film 11, a first side film 12, a second side film 13, a third side film 14 and a fourth side film 15 integrally connected, where the first side film 12 and the second side film 13 are respectively disposed on two sides of the base film 11 in a first direction, the third side film 14 and the fourth side film 15 are respectively disposed on two sides of the base film 11 in a second direction perpendicular to the first direction, and the front surfaces of the first side film 12, the second side film 13, the third side film 14 and the fourth side film 15 are respectively provided with a first adhesive layer 21 for adhering to the battery 60, the front surface of the base film 11 can be adhered to the back surface of the battery 60, and a first peel-off line 31 extending along the second direction is disposed between the first side film 12 and the base film 11.

The application of the easy-to-tear tape provided in this embodiment includes the bottom film 11, the first side film 12, the second side film 13, the third side film 14 and the fourth side film 15 that are integrally connected, since the front surfaces of the first side film 12, the second side film 13, the third side film 14 and the fourth side film 15 are all provided with the first bonding layer 21 for bonding with the battery cell 60, when the battery is assembled, the battery cell 60 is placed on the easy-to-tear tape, the back surface of the battery cell 60 faces the front surface of the bottom film 11, the side surface of the battery cell 60 is wrapped by the first side film 12, the second side film 13, the third side film 14 and the fourth side film 15, and the side surface of the battery cell 60 is bonded and connected with the battery cell 60 by the first bonding layer 21, so that the back surface, the two sides and the two ends of the battery cell 60 are protected by the easy-to-tear tape that is integrally connected, and when the battery is disassembled after sales, since the first easy-to-tear line 31 is provided between the first side film 12 and the bottom film 11, the first side film 12 and the bottom film 11 are disconnected by pulling the first easy-to-tear line 31, and the first side film 11 is separated by the first side film 11, and the first side film 11 is bonded by the first side film 11. The protection to the back, both sides and both ends of electric core 60 can be realized to the easy subsides that tears to when the maintenance dismantles after selling, through carrying and drawing first side membrane 12 with electric core 60 and carrier film 11 separation, because easy subsides are connected as an organic whole, only need the preparation processing easily tear and paste a product, and simplify the bonding step of easily tearing subsides, improve the bonding efficiency of easily tearing subsides.

The first direction refers to the X direction in fig. 1, and the second direction refers to the Y direction in fig. 1.

In the present embodiment, the base film 11, the first side film 12, the second side film 13, the third side film 14, and the fourth side film 15 are made of PET (polyester resin).

In this embodiment, as shown in fig. 1, the first side film 12 is located on the right side of the base film 11, and in other embodiments, the first side film 12 may be located on the left side of the base film 11.

As shown in fig. 1 and fig. 4 to 6, a cutting structure 41 extending along a first direction is disposed on the first side film 12, two ends of the cutting structure 41 extend to two sides of the first side film 12 respectively, the cutting structure 41 divides the first side film 12 into a first lifting film 121 and a second lifting film 122, a first easy-tearing line 31 is disposed between the first lifting film 121 and the bottom film 11, the first adhesive layer 21 includes a first adhesive layer 211 and a second adhesive layer 212, the first adhesive layer 211 and the second adhesive layer 212 extend along a second direction and are disposed at intervals along the first direction, a first adhesive layer 211 and a second adhesive layer 212 are disposed on the front surface of the first lifting film 121, and a second adhesive layer 212 is disposed on the front surface of the second lifting film 122, and the second adhesive layer 212 is located on one side of the first adhesive layer 211 far from the bottom film 11. When the after-sales maintenance is disassembled, the second pulling film 122 is pulled first, the second adhesive layer 212 on the second pulling film 122 is separated from the battery cell 60, the first pulling film 121 is separated from the second pulling film 122 under the action of the cutting structure 41, the first pulling film 121 is pulled again, the second adhesive layer 212 on the first pulling film 121 is separated from the battery cell 60, the first pulling film 121 is pulled continuously, and as the first easy tearing line 31 is arranged between the first pulling film 121 and the bottom film 11, the connection between the first pulling film 121 and the bottom film 11 is broken by the first easy tearing line 31, the battery cell 60 is separated from the bottom film 11 by the first pulling film 121, the battery cell 60 is separated from the rest easy tearing pastes by the first pulling film 121, and finally the easy tearing paste separated from the battery cell 60 is taken out from the battery bin by the second pulling film 122.

It should be noted that the two ends of the cutting structure 41 extend to two sides of the first side film 12, where two sides of the first side film 12 refer to the left and right sides of the first side film 12 in fig. 1.

As shown in fig. 3, the cutting structure 41 includes a plurality of grooves and a plurality of protrusions 411 disposed in the plurality of grooves in a one-to-one correspondence, the plurality of grooves are disposed on the first pulling film 121 and are disposed at intervals along the first direction, the plurality of protrusions 411 are disposed on the second pulling film 122 and are disposed at intervals along the first direction, and a portion of an outer sidewall of each protrusion 411 is connected to a portion of an inner wall of the corresponding groove. With the above cutting structure 41, since the plurality of grooves are formed in the first pull film 121, after the first pull film 121 and the second pull film 122 are separated by the cutting structure 41, gaps are avoided on the first pull film 121, so that when the first pull film 121 is pulled to detach the battery cell 60, the first pull film 121 is prevented from being broken.

As shown in fig. 1, two cutting structures 41 are provided on the first side film 12, the two cutting structures 41 being provided at intervals in the second direction, the two cutting structures 41 dividing the first side film 12 into two first pull films 121 and a second pull film 122 located between the two first pull films 121. The first side film 12 is divided into two first pulling films 121 and the second pulling film 122 positioned between the two first pulling films 121 by the two cutting structures 41, so that the two first pulling films 121 can be respectively pulled by two hands, and the operation convenience of easily tearing and pasting and separating the battery cells is improved.

In the present embodiment, the ratio of the area of the second pull film 122 to the area of the first pull film 121 is less than or equal to 0.5. Since the ratio of the area of the second pull film 122 to the area of the first pull film 121 is less than or equal to 0.5, it is ensured that the area of the first pull film 121 can bring about a sufficiently large structural reliability to separate the battery cell 60 and the easy-to-tear tape 10 by pulling the first pull film 121.

The ratio of the area of the second pull film 122 to the area of the first pull film 121 may be any one of 0.1, 0.2, 0.3, 0.4, 0.5, and less than or equal to 0.5.

In this embodiment, the third side film 14 is disposed corresponding to the head of the battery cell 60, the fourth side film 15 is disposed corresponding to the tail of the battery cell 60, a second easy-to-tear line extending along the first direction is disposed between the third side film 14 and the bottom film 11, a third easy-to-tear line extending along the first direction is disposed between the fourth side film 15 and the bottom film 11, and both the second easy-to-tear line and the third easy-to-tear line extend to two sides of the bottom film 11 in the first direction. By arranging the third side film 14 corresponding to the head of the battery cell 60 and the fourth side film 15 corresponding to the tail of the battery cell 60, in the process of pulling the first pulling film 121 to separate the battery cell 60 and the easy-to-tear tape 10, the third side film 14 and the fourth side film 15 can be separated from the bottom film 11 through the first adhesive layer 21, so that the third side film 14 and the fourth side film 15 are utilized to continuously protect the head and the tail of the battery cell 60 in the process of repairing and detecting the battery cell 60.

As shown in fig. 1, the front surface of the base film 11 is provided with a second adhesive layer 22, and the first adhesive layer 21 has a tackiness greater than that of the second adhesive layer 22. The front of the base film 11 is adhered to the back of the battery cell 60 through the second adhesive layer 22, so that the reliability of adhesion in the process of protecting the battery cell 60 by the easy-tearing adhesive 10 is improved, and as the adhesion of the first adhesive layer 21 is greater than that of the second adhesive layer 22, when the first lifting film 121 is lifted, the first lifting film 121 can be ensured to separate the battery cell 60 from the base film 11 under the action of the first adhesive layer 21, and the first lifting film 121, the third side film 14 and the fourth side film 15 are separated from the base film 11 through the first easy-tearing line 31, the second easy-tearing line and the third easy-tearing line respectively.

As shown in fig. 1, the third side film 14 is disposed corresponding to the head of the battery cell 60, the fourth side film 15 is disposed corresponding to the tail of the battery cell 60, the front surfaces of the first side film 12, the second side film 13 and the fourth side film 15 are all provided with a third adhesive layer 23 for adhering to the battery cell 60, the third adhesive layer 23 is located on one side of the first adhesive layer 21 near the bottom film 11, and the adhesiveness of the third adhesive layer 23 is smaller than that of the first adhesive layer 21. Since the third adhesive layer 23 is located on the side of the first adhesive layer 21 near the base film 11, the third adhesive layer 23 can be adhered to the side surface of the battery cell, the first adhesive layer 21 can be adhered to the front surface of the battery cell, so that the reliability of adhesion between the easy-tearing adhesive and the battery cell is increased by using the third adhesive layer 23, and since the adhesion of the third adhesive layer 23 is smaller than that of the first adhesive layer 21, when the battery cell is separated from the easy-tearing adhesive, the separation resistance of the side surface of the battery cell and the easy-tearing adhesive is reduced.

As shown in fig. 1, the third side film 14 is further provided with a avoiding groove 141 for avoiding the connector electrically connected to the battery cell 60.

In this embodiment, the second adhesive layer 22 and the third adhesive layer 23 have the same viscosity, and the second adhesive layer 22 and the third adhesive layer 23 each include a plurality of circular adhesive dots arranged in an array, the center-to-center distances of two adjacent circular adhesive dots are 2mm, and the diameters of the circular adhesive dots are 1mm.

In this embodiment, the thickness dimension of the peel-off patch is between 0.03mm and 0.2 mm. The easy-to-tear tape with the thickness range can ensure that the easy-to-tear tape has enough structural strength to protect the battery cell 60 on the premise of reducing the thickness of the easy-to-tear tape and providing a larger accommodating space for the battery cell.

Wherein the thickness dimension of the easy-to-tear tape may be any value between 0.03mm, 0.08mm, 0.13mm, 0.18mm, 0.2mm, and 0.03mm to 0.2 mm.

As shown in fig. 1, the first side film 12, the second side film 13, the third side film 14, and the fourth side film 15 are each provided with a first bending line 51 and a second bending line 52, the first bending line 51 is disposed corresponding to an edge of the back surface of the battery cell 60, and the second bending line 52 is disposed corresponding to an edge of the front surface of the battery cell 60. Adopt foretell first bending line 51 and second bending line 52, can be in the in-process of wrapping up the easy tearing subsides on electric core 60, be convenient for easily tear subsides take place to warp in order to laminate in the surface of electric core, improve the bonding efficiency of easy tearing subsides.

In this embodiment, the third side film 14 is disposed corresponding to the head of the battery cell 60, the fourth side film 15 is disposed corresponding to the tail of the battery cell 60, and the easy-to-tear tape further includes a heat dissipation coating 24, where the heat dissipation coating 24 is disposed on the back of the third side film 14. In the process of high-power charge and discharge of the battery cell, the heat of the battery cell is guided to the outside from the head of the battery cell by utilizing the heat dissipation coating 24, so that the heat dissipation effect is achieved, and the service life of the mobile phone is prolonged.

The heat dissipation coating 24 may be a polymer coating such as boron nitride or graphene.

In the present embodiment, the back surfaces of the base film 11, the first side film 12, the second side film 13, and the fourth side film 15 are provided with the ink layer 25 to print the instructions.

As shown in fig. 10, the easy-to-tear tape at the third side film 14 includes the first adhesive layer 21, the third side film 14, and the heat dissipation coating 24 in this order in a direction away from the battery cell 60.

As shown in fig. 11, in the direction away from the battery cell 60, the easy-to-tear tape at the base film 11 sequentially includes the second adhesive layer 22, the base film 11, and the ink layer 25, the easy-to-tear tape at the first side film 12 sequentially includes the first adhesive layer 21 or the third adhesive layer 23, the first side film 12, and the ink layer 25, the easy-to-tear tape at the second side film 13 sequentially includes the first adhesive layer 21 or the third adhesive layer 23, the second side film 13, and the ink layer 25, and the easy-to-tear tape at the fourth side film 15 sequentially includes the first adhesive layer 21 or the third adhesive layer 23, the fourth side film 15, and the ink layer 25.

In the present embodiment, the back surface of the base film 11 is provided with a fourth adhesive layer. The battery cell is wrapped by the easy-tearing adhesive, the back surface of the bottom film 11 of the easy-tearing adhesive is adhered to the battery compartment by utilizing the fourth adhesive layer, so that when the battery cell is maintained after sale, the first lifting film 121 is lifted, the acting force applied to the bottom film 11 by the fourth adhesive layer is directed to the battery compartment, the acting force applied to the first lifting film 121 by the first adhesive layer 21 is deviated from the battery compartment, the first lifting film 121 and the bottom film 11 are separated from the first easy-tearing line 31 by utilizing opposite acting force, the battery cell 60 is separated from other easy-tearing adhesive by utilizing the first lifting film 121, the battery cell 60 is taken out from the battery compartment, the other easy-tearing adhesive is left in the battery compartment, and the other easy-tearing adhesive is taken out from the battery compartment by lifting the second lifting film 122 and the second side film 13.

As shown in fig. 1, the edge of the first side film 12 on the side away from the base film 11 has a glue-free region 123. With the above-described glue-free region 123, the operation convenience can be improved when the first and second pull-up films 121 and 122 are separated from the front surface of the battery cell.

As shown in fig. 1 to 11, another embodiment of the present utility model provides a battery, which includes a battery core 60 and a tearable patch 10, wherein the tearable patch 10 is wrapped on the battery core 60, and the tearable patch 10 is provided as described above. Therefore, the battery provided by this embodiment can also be protected on the back, two sides and two ends of the battery cell 60 by using the easy-to-tear tape, and when the battery cell is detached by after-sales maintenance, the battery cell 60 is separated from the bottom film 11 by lifting the first side film 12, and the easy-to-tear tape is integrally connected, so that only a product is required to be manufactured and processed, the production cost is saved, the bonding step of the easy-to-tear tape is simplified, the bonding efficiency of the easy-to-tear tape is improved, and the satisfaction of customers is improved.

As shown in fig. 8, the battery cell 60 includes a battery cell body 61, a protection plate 62, a foam adhesive 63, a top seal adhesive 64 and a cover adhesive 65, the protection plate 62 is disposed at an upper end of the battery cell body 61, the protection plate 62 is electrically connected with the battery cell body 61, a circuit for protecting the circuit is disposed in the protection plate 62, components for controlling the protection circuit are distributed on a surface of the protection plate 62, an L-shaped nickel sheet welded to a tab of the battery cell body 61 is disposed on the protection plate 62, a terminal of the protection plate 62 is welded to an FPC, a connector electrically connected to a terminal connector is disposed on the FPC, the top seal adhesive 64 is attached to an upper end of the battery cell body 61 and is disposed between the battery cell body 61 and the protection plate 62, the upper end of the insulating battery cell body 61 is covered with the cover adhesive 65, the cover adhesive 65 is bent along with the protection plate 62, the foam adhesive 63 is attached to a front surface of the battery cell body 61 and is disposed between the battery cell body 61 and the protection plate 62, and the protection plate 62 is prevented from puncturing the battery cell body 61.

Specifically, a top sealing adhesive paper 64 and a foam adhesive paper 63 are arranged at the upper end of the battery core body 61, the electrode lugs of the battery core body 61 and the protection plate 62 are welded and connected, the protection plate is wrapped by the coated adhesive paper 65, and finally the battery core 60 is wrapped by the easy-to-tear adhesive.

Therefore, the third side film 14 is used for wrapping the head of the battery cell 60, the protection plate 62 is prevented from moving, the FPC is fixed, the FPC is prevented from tilting and rebounding, the bottom film 11, the first side film 12, the second side film 13 and the fourth side film 15 are used for wrapping the tail of the battery cell 60, and the risks of short circuit and battery puncture due to contact of the aluminum plastic films exposed on the back, two sides and the tail of the battery cell 60 with the outside are prevented.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (11)

1. The easy-tearing patch is characterized by comprising a bottom film (11), a first side film (12), a second side film (13), a third side film (14) and a fourth side film (15) which are integrally connected, wherein the first side film (12) and the second side film (13) are respectively arranged on two sides of the bottom film (11) in a first direction, and the third side film (14) and the fourth side film (15) are respectively arranged on two sides of the bottom film (11) in a second direction perpendicular to the first direction;

the front of the first side film (12), the second side film (13), the third side film (14) and the fourth side film (15) are respectively provided with a first bonding layer (21) used for bonding with the battery cell (60), the front of the bottom film (11) can be bonded with the back of the battery cell (60), and a first easy-tearing line (31) extending along the second direction is arranged between the first side film (12) and the bottom film (11).

2. The easy-to-tear tape according to claim 1, wherein a cutting structure (41) extending along the first direction is provided on the first side film (12), two ends of the cutting structure (41) extend to two sides of the first side film (12) respectively, the cutting structure (41) divides the first side film (12) into a first lifting film (121) and a second lifting film (122), the first easy-to-tear line (31) is provided between the first lifting film (121) and the bottom film (11), the first adhesive layer (21) comprises a first adhesive layer (211) and a second adhesive layer (212), the first adhesive layer (211) and the second adhesive layer (212) extend along the second direction and are arranged at intervals along the first direction, the front surface of the first lifting film (121) is provided with the first adhesive layer (211) and the second adhesive layer (212), the front surface of the second lifting film (122) is provided with the second adhesive layer (212), and the second adhesive layer (211) is far away from the first adhesive layer (11).

3. The easy-tearing label according to claim 2, wherein the cutting structure (41) comprises a plurality of grooves and a plurality of protrusions (411) arranged in the grooves in a one-to-one correspondence manner, the grooves are arranged on the first lifting film (121) and are arranged at intervals along the first direction, the protrusions (411) are arranged on the second lifting film (122) and are arranged at intervals along the first direction, and part of the outer side wall of each protrusion (411) is connected with the corresponding part of the inner wall of the groove.

4. The peel-off patch of claim 2, wherein,

the first side film (12) is provided with two cutting structures (41), the two cutting structures (41) are arranged at intervals in the second direction, and the two cutting structures (41) divide the first side film (12) into two first lifting films (121) and the second lifting film (122) positioned between the two first lifting films (121); and/or the number of the groups of groups,

the ratio of the area of the second pull film (122) to the area of the first pull film (121) is less than or equal to 0.5.

5. The easy-tearing patch according to claim 2, wherein the third side film (14) is disposed corresponding to a head portion of the battery cell (60), the fourth side film (15) is disposed corresponding to a tail portion of the battery cell (60), a second easy-tearing line extending along the first direction is disposed between the third side film (14) and the bottom film (11), a third easy-tearing line extending along the first direction is disposed between the fourth side film (15) and the bottom film (11), and both the second easy-tearing line and the third easy-tearing line extend to both sides of the bottom film (11) in the first direction.

6. The easy-tearing paste according to claim 1, wherein the front surface of the base film (11) is provided with a second adhesive layer (22), and the first adhesive layer (21) has a viscosity greater than that of the second adhesive layer (22).

7. The easy-to-tear tape according to any one of claims 1 to 6, wherein the third side film (14) is disposed corresponding to a head portion of the battery cell (60), the fourth side film (15) is disposed corresponding to a tail portion of the battery cell (60), and the front surfaces of the first side film (12), the second side film (13) and the fourth side film (15) are each provided with a third adhesive layer (23) for adhering to the battery cell (60), the third adhesive layer (23) being located on a side of the first adhesive layer (21) close to the base film (11), and the third adhesive layer (23) being less adhesive than the first adhesive layer (21).

8. The peel-off patch as claimed in any one of claims 1 to 6, wherein,

the thickness dimension of the easy-tearing paste is between 0.03mm and 0.2 mm; and/or the number of the groups of groups,

the first side film (12), the second side film (13), the third side film (14) and the fourth side film (15) are respectively provided with a first bending line (51) and a second bending line (52), the first bending line (51) is arranged corresponding to the edge of the back of the battery cell (60), and the second bending line (52) is arranged corresponding to the edge of the front of the battery cell (60).

9. The easy-to-tear tape according to any one of claims 1 to 6, wherein the third side film (14) is disposed corresponding to a head portion of the battery cell (60), the fourth side film (15) is disposed corresponding to a tail portion of the battery cell (60), and further comprising a heat dissipation coating (24), the heat dissipation coating (24) being disposed on a back surface of the third side film (14).

10. The peel-off patch as claimed in any one of claims 1 to 6, wherein,

a fourth adhesive layer is arranged on the back surface of the bottom film (11); and/or the number of the groups of groups,

the edge of the side of the first side film (12) far away from the bottom film (11) is provided with a glue-free area (123).

11. A battery, the battery comprising:

a battery cell (60);

-a peel-off patch (10) wrapped on a battery cell (60), said peel-off patch (10) being a peel-off patch according to any one of claims 1 to 10.