Battery packaging structure, battery and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery packaging structure, a battery and electric equipment, the battery packaging structure comprises an aluminum layer, a nylon layer is arranged on one side of the aluminum layer, a protective layer is arranged on the other side of the aluminum layer, and the protective layer comprises a first polypropylene layer and a ceramic layer. The first polypropylene layer is arranged between the aluminum layer and the ceramic layer, or the protective layer comprises a second polypropylene layer doped with ceramic particles; the ceramic layer or the second polypropylene layer doped with the ceramic particles can effectively improve the protection capability of the battery to sharp objects, and when the sharp objects penetrate into the battery, the battery packaging structure can block the sharp objects on the outer layer, so that the battery core in the battery is prevented from being damaged, the battery fault risk caused by mechanical abuse is reduced, and the service life of the battery is prolonged. And thus, the overall safety of the battery is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and specifically relates to a battery packaging structure, a battery and an electrical device. Background Art

[0002] As a new type of secondary battery, lithium-ion battery has the advantages of high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and green environmental protection. It has broad application prospects in portable appliances, power tools, large-scale energy storage, electric transportation power supply, etc.

[0003] Aluminum-plastic film is a composite soft packaging shell used to encapsulate lithium batteries, which plays a key protective role in lithium batteries. However, the battery has a large flat area, which increases the risk of the battery being pierced by sharp objects, causing a short circuit in the battery. Utility Model Content

[0004] The purpose of the utility model is to provide a battery packaging structure to address the deficiencies of the prior art, thereby solving the technical problem in the prior art that the battery has a large plane area, thereby increasing the risk of the battery being pierced by sharp objects and causing a short circuit in the battery.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, the utility model provides a battery packaging structure, comprising an aluminum layer, a nylon layer is arranged on one side of the aluminum layer, and a protective layer is arranged on the other side of the aluminum layer, the protective layer comprises a first polypropylene layer and a ceramic layer, the first polypropylene layer is arranged between the aluminum layer and the ceramic layer, or the protective layer comprises a second polypropylene layer doped with ceramic particles.

[0007] Preferably, the thickness of the ceramic layer is smaller than the thickness of the first polypropylene layer.

[0008] Preferably, the thickness of the ceramic layer is 6-12 μm.

[0009] Preferably, the aluminum layer has a first region and a second region, along the width direction of the aluminum layer, the second region is located on at least one side of the first region, along the thickness direction of the aluminum layer, the orthographic projection of the first polypropylene layer covers the first region and the second region, and the orthographic projection of the ceramic layer covers the first region.

[0010] Preferably, the width of the ceramic layer is D, and the width of the first polypropylene layer is F, satisfying the relationship: F-D≥a, and a is 3-5 mm.

[0011] Preferably, the particle size D50 of the ceramic particles is 0.6-1 μm.

[0012] Preferably, a first anti-corrosion layer is provided between the aluminum layer and the protective layer, and a second anti-corrosion layer is provided between the aluminum layer and the nylon layer.

[0013] Preferably, a slippery layer is provided on the side of the nylon layer facing away from the aluminum layer.

[0014] In a second aspect, the utility model provides a battery, comprising a battery cell and the battery packaging structure described in the first aspect, wherein the battery cell is packaged in the battery packaging structure, and the protective layer is located on a side of the battery packaging structure facing the battery cell.

[0015] In a third aspect, the utility model provides an electrical device, comprising the battery described in the second aspect.

[0016] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0017] The battery packaging structure of the embodiment of the utility model, through the coordinated use of an aluminum layer, a nylon layer and a protective layer, the nylon layer is arranged on one side of the aluminum layer, and the protective layer is arranged on the other side of the aluminum layer, the protective layer includes a first polypropylene layer and a ceramic layer, or the protective layer includes a second polypropylene layer doped with ceramic particles, the ceramic layer or the second polypropylene layer doped with ceramic particles, can effectively improve the battery's protection against sharp objects. When a sharp object pierces the battery, the battery packaging structure can block the sharp object in the outer layer, thereby preventing damage to the battery cells inside the battery, reducing the risk of battery failure caused by mechanical abuse, and thereby improving the overall safety of the battery.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 This is one of the structural schematic diagrams of a battery packaging structure according to an embodiment of the present invention.

[0021] Figure 2 This is the second structural schematic diagram of the battery packaging structure according to the first embodiment of the utility model.

[0022] Figure 3This is the third structural schematic diagram of the battery packaging structure of the first embodiment of the utility model.

[0023] Figure 4 This is the fourth structural schematic diagram of the battery packaging structure according to the first embodiment of the utility model.

[0024] Figure 5 This is the fifth structural diagram of the battery packaging structure according to the first embodiment of the utility model.

[0025] Figure 6 This is one of the structural schematic diagrams of the battery packaging structure of the second embodiment of the utility model.

[0026] Figure 7 This is the second structural schematic diagram of the battery packaging structure of the second embodiment of the utility model.

[0027] The reference numerals are described as follows:

[0028] 100. Battery packaging structure;

[0029] 10. Aluminum layer; 11. First region; 12. Second region;

[0030] 20. Nylon layer;

[0031] 30. a first polypropylene layer; 31. a groove;

[0032] 40. Ceramic layer;

[0033] 50. a second polypropylene layer;

[0034] 60. The first anticorrosive layer;

[0035] 70. Second anti-corrosion layer;

[0036] 80. Smooth layer;

[0037] b. The width direction of the aluminum layer; c. The thickness direction of the aluminum layer. DETAILED DESCRIPTION

[0038] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0039] Furthermore, the terms “first”, “second”, etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0040] In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0041] The following will be combined with the attached Figures 1 to 7 The technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] The electrical equipment of the embodiment of the utility model includes a battery. The electrical equipment may be a car, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The car may be a fuel car, a gas car, or a new energy car, and the new energy car may be a pure electric car, a hybrid car, or an extended-range car, and the like; the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; the electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, and the like. The embodiment of the present application does not impose any special restrictions on the above-mentioned electrical equipment.

[0043] The battery of the embodiment of the present utility model comprises a battery cell and a battery packaging structure 100 , wherein the battery cell is packaged in the battery packaging structure 100 .

[0044] It should be noted that the battery can be one or more. If there are multiple batteries, the multiple batteries can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple batteries are connected in series and in parallel. Multiple batteries can be directly connected in series, in parallel, or in mixed connection to form a whole; of course, multiple batteries can also be connected in series, in parallel, or in mixed connection to form a battery module, and multiple battery modules can then be connected in series, in parallel, or in mixed connection to form a whole.

[0045] See also Figures 1 to 7The battery packaging structure 100 of the embodiment of the utility model includes an aluminum layer 10, a nylon layer 20 is provided on one side of the aluminum layer 10, and a protective layer is provided on the other side of the aluminum layer 10, and the protective layer is located on the side of the battery packaging structure 100 facing the battery cell.

[0046] Compared with the prior art, the battery packaging structure 100 of the embodiment of the utility model uses an aluminum layer 10, a nylon layer 20 and a protective layer in combination. The nylon layer 20 is arranged on one side of the aluminum layer 10, and the protective layer is arranged on the other side of the aluminum layer 10. The protective layer can effectively improve the battery's protection against sharp objects. When a sharp object pierces the battery, the battery packaging structure 100 can block the sharp object in the outer layer, thereby preventing damage to the battery cells inside the battery, reducing the risk of battery failure caused by mechanical abuse, and thereby improving the overall safety of the battery.

[0047] In some embodiments, a first anti-corrosion layer 60 is provided between the aluminum layer 10 and the protective layer, and a second anti-corrosion layer 70 is provided between the aluminum layer 10 and the nylon layer 20. Through the provision of the anti-corrosion layer, the first anti-corrosion layer 60 and the second anti-corrosion layer 70 can effectively prevent the corrosion of the electrolyte to the aluminum layer 10, thereby improving the safety of the battery and extending the service life of the battery.

[0048] In some embodiments, a slippery layer 80 is disposed on the side of the nylon layer 20 away from the aluminum layer 10. By disposing the slippery layer 80, the slippery layer 80 can effectively reduce the friction coefficient of the outer surface of the battery packaging structure 100, increase the slipperiness, and improve the formability.

[0049] Furthermore, the nylon layer 20 has impact resistance, puncture resistance, heat resistance and insulation performance, which can not only effectively resist external physical impact and friction, prevent the aluminum layer 10 from being damaged or scratched, but also assist the battery packaging structure 100 in maintaining its shape and stability, thereby ensuring the integrity and safety of the battery packaging structure 100. Therefore, the thickness of the nylon layer 20 is 12 to 20 μm. The nylon layer 20 within this thickness range can effectively ensure the performance of the nylon layer 20 while avoiding increasing the overall thickness of the battery packaging structure 100, thereby increasing the thickness of the battery, thereby affecting the energy density of the battery, resulting in a reduction in the energy density of the battery.

[0050] Preferably, the thickness of the nylon layer 20 is 14-18 μm. For example, the thickness of the nylon layer 20 is 14 μm, 14.5 μm, 15 μm, 15.5 μm, 16 μm, 16.5 μm, 17 μm, 17.5 μm or 18 μm, but is not limited to the listed values, and other values ​​within the numerical range are also applicable.

[0051] It should be noted that the first anti-corrosion layer 60 and the second anti-corrosion layer 70 can be disposed on the surface of the aluminum layer 10 by spraying, and the slippery layer 80 can be disposed on the side of the nylon layer 20 away from the aluminum layer 10 by spraying.

[0052] In some embodiments, the thickness of the aluminum layer 10 is 30-38 μm. The aluminum layer 10 within this thickness range can effectively protect the battery cell while avoiding increasing the overall thickness of the battery packaging structure 100 and thus increasing the thickness of the battery, thereby affecting the energy density of the battery and reducing the energy density of the battery.

[0053] Preferably, the thickness of the aluminum layer 10 is 34-36 μm. For example, the thickness of the aluminum layer 10 is 34 μm, 34.2 μm, 34.5 μm, 34.8 μm, 35 μm, 35.3 μm, 35.5 μm, 35.7 μm or 36 μm, but is not limited to the listed values, and other values ​​within the numerical range are also applicable.

[0054] The battery packaging structure 100 of the present utility model has at least the following two implementation modes:

[0055] Implementation method 1: Please refer to Figures 1 to 5 The protective layer includes a first polypropylene layer 30 and a ceramic layer 40 , and the first polypropylene layer 30 is disposed between the aluminum layer 10 and the ceramic layer 40 .

[0056] Compared with the prior art, the protective layer of this embodiment, through the coordinated use of the first polypropylene layer 30 and the ceramic layer 40, the ceramic layer 40 can effectively improve the battery's protection against sharp objects. When a sharp object pierces the battery, the battery packaging structure 100 can block the sharp object in the outer layer, thereby preventing damage to the battery cells inside the battery, reducing the risk of battery failure caused by mechanical abuse, and thereby improving the overall safety of the battery.

[0057] In some embodiments, the thickness of the ceramic layer 40 is less than the thickness of the first polypropylene layer 30. By setting the thickness of the ceramic layer 40 to be less than the thickness of the first polypropylene layer 30, the protection capability of the ceramic layer 40 to the battery is effectively ensured, and at the same time, the ceramic layer 40 is prevented from being too thick, thereby increasing the overall thickness of the battery, thereby affecting the energy density of the battery, resulting in a reduction in the energy density of the battery.

[0058] In some embodiments, the thickness of the ceramic layer 40 is 6 to 12 μm. The thickness of the ceramic layer 40 should not be too thick or too thin. When the thickness of the ceramic layer 40 is too thick, that is, the thickness of the ceramic layer 40 is greater than 12 μm, the thicker thickness of the ceramic layer 40 leads to a thicker overall thickness of the battery, and the weight of the battery increases, thereby affecting the energy density of the battery, resulting in a reduction in the energy density of the battery; when the thickness of the ceramic layer 40 is too thin, that is, the thickness of the ceramic layer 40 is less than 6 μm, the ceramic layer 40 has poor protection for the battery. Therefore, setting the thickness of the ceramic layer 40 to 6 to 12 μm can effectively ensure the protection of the ceramic layer 40 for the battery, while avoiding the ceramic layer 40 being too thick, which increases the overall thickness of the battery, thereby affecting the energy density of the battery, resulting in a reduction in the energy density of the battery.

[0059] Preferably, the thickness of the ceramic layer 40 is 8-10 μm. For example, the thickness of the ceramic layer 40 is 8 μm, 8.2 μm, 8.5 μm, 8.7 μm, 8.9 μm, 9 μm, 9.3 μm, 9.5 μm, 9.6 μm, 9.8 μm or 10 μm, but is not limited to the listed values, and other values ​​within the numerical range are also applicable.

[0060] In some embodiments, the thickness of the first polypropylene layer 30 is 32 to 36 μm. The first polypropylene layer 30 within this thickness range can effectively ensure the bonding and sealing during the packaging process, ensure the packaging effect of the battery, and avoid battery leakage caused by battery packaging failure. At the same time, it is prevented that the thickness of the first polypropylene layer 30 is too thick, which increases the overall thickness of the battery, thereby affecting the energy density of the battery and reducing the energy density of the battery.

[0061] Preferably, the thickness of the first polypropylene layer 30 is 34-36 μm. For example, the thickness of the first polypropylene layer 30 is 34 μm, 34.1 μm, 34.3 μm, 34.5 μm, 34.6 μm, 34.8 μm, 35 μm, 35.2 μm, 35.5 μm, 35.7 μm, 35.8 μm, 35.9 μm or 36 μm, but is not limited to the listed values, and other values ​​within the numerical range are also applicable.

[0062] Furthermore, the melting point of the first polypropylene layer 30 is 120 to 170°C. When the battery generates heat during operation or charging, the first polypropylene layer 30 needs to maintain its structural integrity to prevent melting or deformation. If the melting point of the first polypropylene layer 30 is too low, it may melt when the battery temperature rises, causing a short circuit and explosion inside the battery. In addition, during the battery manufacturing process, the battery needs to be heat-sealed. If the melting point of the first polypropylene layer 30 is too high, a higher temperature or longer time may be required during the heat sealing process to achieve a good packaging effect, which may affect production efficiency and increase manufacturing costs. Therefore, the melting point of the first polypropylene layer 30 is 120 to 170°C. The first polypropylene layer 30 within this melting point range can ensure that the battery can maintain structural stability under high temperature or even overheating conditions, thereby preventing thermal runaway of the battery, and at the same time, ensuring processing performance and structural stability during battery manufacturing.

[0063] Preferably, the melting point of the first polypropylene layer 30 is 120-150° C. For example, the melting point of the first polypropylene layer 30 is 120° C., 121° C., 125° C., 127° C., 130° C., 132° C., 135° C., 138° C., 139° C., 140° C., 143° C., 145° C., 146° C., 149° C. or 150° C., but is not limited to the listed values, and other values ​​within the numerical range are also applicable.

[0064] In some embodiments, the aluminum layer 10 has a first region 11 and a second region 12. Along the width direction b of the aluminum layer 10, the second region 12 is located on at least one side of the first region 11. Along the thickness direction c of the aluminum layer 10, the orthographic projection of the first polypropylene layer 30 covers the first region 11 and the second region 12, and the orthographic projection of the ceramic layer 40 covers the first region 11.

[0065] In the battery packaging process, the inner layer of the battery packaging structure 100, that is, the first polypropylene layer 30, generally plays the role of bonding and sealing to ensure the packaging effect of the battery and avoid battery leakage caused by battery packaging failure. If the width D of the ceramic layer 40 is too large, it may increase the difficulty of heat sealing, resulting in poor heat sealing or reduced sealing performance. Therefore, by setting the orthographic projection of the first polypropylene layer 30 and the orthographic projection of the ceramic layer 40, the orthographic projection of the polypropylene layer 31 in the thickness direction c of the aluminum layer 10 covers the first area 11 and the second area 12 of the aluminum layer 10, and the orthographic projection of the ceramic layer 40 in the thickness direction of the aluminum layer 10 covers the first area 11 of the aluminum layer 10, which effectively makes the width D of the ceramic layer 40 smaller than the width F of the first polypropylene layer 30, thereby reserving a heat sealing position for the battery packaging and ensuring the packaging effect of the battery.

[0066] In some embodiments, a groove 31 is provided on the first polypropylene layer 30, and along the thickness direction c of the aluminum layer 10, the orthographic projection of the groove 31 is located in the first region 11, and the ceramic layer 40 is disposed in the groove 31. By accommodating the ceramic layer 40 in the groove 31 of the first polypropylene layer 30, the protection capability of the ceramic layer 40 to the battery is effectively ensured, and at the same time, the overall thickness of the battery is avoided from being increased, thereby affecting the energy density of the battery, resulting in a reduction in the energy density of the battery.

[0067] In some embodiments, the width of the ceramic layer 40 is D, and the width of the first polypropylene layer 30 is F, satisfying the relationship: F-D≥a, and a is 3-5 mm. By setting the width difference between the first polypropylene layer 30 and the ceramic layer 40, F-D≥a, and a is 3-5 mm, it is ensured that a heat sealing position is reserved for the packaging of the battery, and the packaging effect of the battery is guaranteed.

[0068] In some embodiments, the ceramic layer 40 includes ceramic particles, and the ceramic particles are aluminum oxide, silicon oxide, or boehmite. For example, the ceramic particles are boehmite, and the particle size D50 of the boehmite is 0.7-1.2 μm.

[0069] Implementation Method 2: Please refer to Figures 6-7 , the protective layer includes a second polypropylene layer 50 doped with ceramic particles.

[0070] Compared with the prior art, the protective layer of this embodiment effectively improves the structural strength of the second polypropylene layer 50 by doping ceramic particles in the second polypropylene layer 50, so that the second polypropylene layer 50 can effectively improve the battery's ability to protect against sharp objects. When a sharp object pierces the battery, the battery packaging structure 100 can block the sharp object in the outer layer, thereby preventing damage to the battery cells inside the battery, reducing the risk of battery failure caused by mechanical abuse, and thus improving the overall safety of the battery.

[0071] In some embodiments, the thickness of the second polypropylene layer 50 is 35-40 μm. The second polypropylene layer 50 within this thickness range can effectively ensure the protection capability of the second polypropylene layer 50 to the battery, and at the same time, avoid the second polypropylene layer 50 being too thick to increase the overall thickness of the battery, thereby affecting the energy density of the battery and reducing the energy density of the battery.

[0072] Preferably, the thickness of the second polypropylene layer 50 is 35-38 μm. For example, the thickness of the second polypropylene layer 50 is 35 μm, 35.2 μm, 35.5 μm, 35.8 μm, 36 μm, 36.1 μm, 36.5 μm, 36.9 μm, 37 μm, 37.1 μm, 37.5 μm, 37.7 μm or 38 μm, but is not limited to the listed values, and other values ​​within the numerical range are also applicable.

[0073] In some embodiments, the melting point of the second polypropylene layer 50 is 120-180° C. The second polypropylene layer 50 within this melting point range can ensure that the battery can maintain structural stability under high temperature or even overheating conditions, thereby preventing thermal runaway of the battery and ensuring processing performance and structural stability during battery manufacturing.

[0074] Preferably, the melting point of the second polypropylene layer 50 is 120-165° C. For example, the melting point of the second polypropylene layer 50 is 120° C., 121° C., 125° C., 128° C., 130° C., 134° C., 135° C., 137° C., 140° C., 142° C., 145° C., 146° C., 150° C., 153° C., 155° C., 159° C., 160° C. or 165° C., but is not limited to the listed values, and other values ​​within the numerical range are also applicable.

[0075] In some embodiments, the particle size D50 of the ceramic particles is 0.6-1 μm. The first ceramic particles are aluminum oxide, silicon oxide or boehmite. For example, the ceramic particles are boehmite, the particle size D50 of the boehmite is 0.6-1 μm, and the mass content of the boehmite in the second polypropylene layer 50 is 20%-35%.

[0076] Preferably, the mass content of boehmite in the second polypropylene layer 50 is 25% to 30%.

[0077] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A battery packaging structure, characterized in that: The invention comprises an aluminum layer (10), a nylon layer (20) is arranged on one side of the aluminum layer (10), a protective layer is arranged on the other side of the aluminum layer (10), the protective layer comprises a first polypropylene layer (30) and a ceramic layer (40), the first polypropylene layer (30) is arranged between the aluminum layer (10) and the ceramic layer (40), or the protective layer comprises a second polypropylene layer (50) doped with ceramic particles.

2. The battery packaging structure according to claim 1, characterized in that: The thickness of the ceramic layer (40) is smaller than the thickness of the first polypropylene layer (30).

3. The battery packaging structure according to claim 1 or 2, characterized in that: The thickness of the ceramic layer (40) is 6 to 12 μm.

4. The battery packaging structure according to claim 1, characterized in that: The aluminum layer (10) has a first region (11) and a second region (12); along a width direction (b) of the aluminum layer (10), the second region (12) is located on at least one side of the first region (11); along a thickness direction (c) of the aluminum layer (10), an orthographic projection of the first polypropylene layer (30) covers the first region (11) and the second region (12); and an orthographic projection of the ceramic layer (40) covers the first region (11).

5. The battery packaging structure according to claim 4, characterized in that: The width of the ceramic layer (40) is D, and the width of the first polypropylene layer (30) is F, satisfying the relationship: F-D≥a, and a is 3-5 mm.

6. The battery packaging structure according to claim 1, characterized in that: The particle size D50 of the ceramic particles is 0.6-1 μm.

7. The battery packaging structure according to claim 1, characterized in that: A first anti-corrosion layer (60) is provided between the aluminum layer (10) and the protective layer, and a second anti-corrosion layer (70) is provided between the aluminum layer (10) and the nylon layer (20).

8. The battery packaging structure according to claim 1, characterized in that: A slippery layer (80) is provided on the side of the nylon layer (20) facing away from the aluminum layer (10).

9. A battery, characterized in that: It comprises a battery cell and the battery packaging structure according to any one of claims 1 to 8, wherein the battery cell is packaged in the battery packaging structure (100), and the protective layer is located on a side of the battery packaging structure (100) facing the battery cell.

10. An electrical equipment, characterized in that: A battery comprising the battery of claim 9.

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