Battery assembly and terminal equipment

Abstract

The utility model relates to a battery assembly and terminal equipment. The battery assembly comprises a battery body, the protective film surrounds the battery body and is folded at the top of the battery body to form a folded part; the tab assembly is bent along the upper surface and the lower surface of the folding part, and comprises a first tab part which extends from the interior of the protective film and is tightly attached to the lower surface of the folding part, a tab bending part which is connected with the first tab part, and a second tab part which is connected with the tab bending part and is tightly attached to the upper surface of the folding part; and the tab glue only covers the surface of the first tab part. According to the battery assembly disclosed by the utility model, through the ingenious layout of the folding protective film, the tab assembly and the tab glue, the efficient utilization of space and the comprehensive improvement of the battery performance are realized, the compactness and the stability of the battery assembly are improved, and greater flexibility is provided for the design and the manufacturing of terminal equipment; and the electronic product can be promoted to develop to be lighter, thinner and more efficient.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and in particular to a battery assembly and a terminal device. Background Art

[0002] In the wave of rapid technological development, terminal devices are moving towards the goal of being lighter and thinner at an unprecedented speed. This change is not only reflected in the appearance design of the device, but also has a profound impact on the internal structure and function realization of the device. Among them, the battery is the energy core of the device, and the optimization of its size has become one of the key factors restricting the thinness of the device.

[0003] Reducing the size of batteries is of great significance to improving the portability and user experience of terminal devices. Therefore, how to achieve the maximum energy density in a limited space and minimize the battery size has become a major problem that plagues major battery manufacturers and terminal equipment manufacturers. Utility Model Content

[0004] In view of this, the utility model provides a battery assembly and a terminal device. The battery assembly of the present design realizes efficient use of space and comprehensive improvement of battery performance through the ingenious layout of the folding protective film, the tab assembly and the tab glue, which not only improves the compactness and stability of the battery assembly, but also provides greater flexibility for the design and manufacture of terminal equipment, and helps to promote the development of electronic products towards lighter, thinner and more efficient directions.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A battery assembly comprises a battery body; a protective film surrounding the battery body and folded at the top of the battery body to form a folded portion; a pole ear assembly extending from the inside of the protective film and closely attached to the upper and lower surfaces of the folded portion, the pole ear assembly being bent along the upper and lower surfaces of the folded portion, the pole ear assembly comprising a first pole ear portion extending from the inside of the protective film and closely attached to the lower surface of the folded portion, a pole ear bent portion connected to the first pole ear portion, and a second pole ear portion connected to the pole ear bent portion and closely attached to the upper surface of the folded portion; and pole ear glue, the pole ear glue only covering the surface of the first pole ear portion.

[0007] The battery assembly of this design achieves efficient use of space and comprehensive improvement of battery performance through the clever layout of folded protective film, tab assembly and tab glue. It not only improves the compactness and stability of the battery assembly, but also provides greater flexibility for the design and manufacturing of terminal equipment, which helps to promote the development of electronic products towards lighter, thinner and more efficient directions.

[0008] Specifically, the folding process of the protective film on the top of the battery body is a key innovation, which not only optimizes the packaging size of the battery assembly, but also significantly improves the space utilization efficiency. Through the carefully designed folding portion on the top of the battery body, the protective film achieves compact packaging, thereby providing more space for the layout of other components. This design strategy is particularly important when the battery assembly is installed in the terminal device, because it allows the overall structural size of the battery assembly to be further reduced through the bending action of the tab bending portion. The design of the tab assembly also reflects a deep understanding of space optimization. The ingenious layout of the first and second tabs, as well as the precise design of the tab bending portion, together achieve the purpose of minimizing the volume of the battery assembly while maintaining functional integrity. This design not only improves the compactness of the battery assembly, but also provides greater flexibility for the layout of other key components inside the device. The application of tab glue further enhances the structural stability of the battery assembly and the reliability of the electrical connection. It only covers the surface of the first pole ear. This selective coating not only ensures the functional integrity of the pole ear part, but also effectively reduces the use of unnecessary materials, thereby reducing costs and improving production efficiency. Most importantly, because the surface of the bent part of the pole ear is not covered with the pole ear glue, the bent part of the pole ear is easier to fold, which greatly reduces the production difficulty and improves the product yield. At the same time, the presence of the pole ear glue on the surface of the first pole ear ensures the wear resistance and fracture resistance of the pole ear during long-term use, providing a guarantee for the long-term stable operation of the battery.

[0009] Preferably, the tab glue is completely hidden in the lower surface of the folded portion.

[0010] The design details of the tab glue further reflect the fine control of the battery assembly performance. In the preferred embodiment, the tab glue is completely hidden under the lower surface of the folded portion. This design not only improves the overall aesthetics of the battery assembly, but also reduces the impact of external factors that may affect the tab glue in extreme environments, such as temperature changes, humidity or chemical corrosion, thereby extending the battery life.

[0011] Preferably, a portion of the tab glue is hidden under the lower surface of the folded portion, and another portion is exposed outside the folded portion, and the tab glue does not extend to the bent portion.

[0012] In another preferred embodiment, the tab glue is partially hidden on the lower surface of the folded portion, and the other part is exposed on the outside of the folded portion and does not extend to the bent portion. This design strategy allows the tab glue to provide the necessary bonding strength while maintaining a certain degree of elasticity to adapt to different mechanical stresses during battery assembly and disassembly. In addition, the tab glue that does not extend to the bent portion reduces the potential obstruction to the tab bent portion, making the folding of the tab bent portion smoother and improving assembly efficiency.

[0013] Preferably, the protective film is provided with a window, and the portion of the tab glue exposed from the folded portion is arranged in the window.

[0014] It is particularly worth mentioning that the window design on the protective film is such that the part of the tab glue exposed from the folded part is exactly located at the window position. This design makes the location of the tab glue easy to identify and inspect, and is convenient for maintenance and replacement. The window setting may also provide reserved space for future battery technology upgrades, such as integrated sensors or tracking chips, making it possible to realize an intelligent battery management system.

[0015] Preferably, the portion of the tab glue exposed from the folded portion is 0.02 mm.

[0016] In the preferred design, the portion of the ear glue exposed from the folded portion is precisely controlled within the range of 0.02mm. This detail design significantly improves the overall performance of the battery assembly. The thickness of the ear glue is directly related to its bonding strength and conductivity. Too thick or too thin may affect the performance of the battery. The thickness range of 0.02mm ensures that the ear glue can provide sufficient bonding strength to ensure a firm connection between the battery ear and the conductive circuit, while maintaining a low resistance, which is conducive to efficient conduction of current. This precise control not only improves the energy conversion efficiency of the battery, but also helps to reduce energy loss during transmission.

[0017] Preferably, both ends of the folding portion are folding edges protruding from the middle section of the folding portion.

[0018] The two ends of the folding part are designed as raised folding margins. This structural feature brings additional mechanical strength to the battery assembly. The folding margins are like reinforcing ribs, which can provide additional support when the battery is subjected to external forces, thereby reducing deformation or damage caused by external forces. This design not only improves the mechanical stability of the battery, but also provides a clear reference point for the positioning of the ear glue, making the position of the ear glue more accurate during the assembly process, thereby improving the assembly quality of the entire battery assembly.

[0019] Preferably, the folded margin is cut off, and the two ends of the folded portion are kept flush with the middle section of the folded portion.

[0020] In some application scenarios, the folding margin may affect the overall size of the battery assembly, or may not meet the requirements in a specific installation environment. Therefore, the preferred design also provides the option of cutting off the folding margin, that is, removing the folding margin through a precise processing process so that the two ends of the folded part remain flush with the middle section. The flexibility of this design enables the battery assembly to adapt to different installation environments and space requirements, while also providing the possibility for lightweight design of the battery. After cutting off the folding margin, the overall size of the battery assembly is optimized, which helps save space and improves the overall design flexibility of the terminal device. At the same time, the flush folding portion also simplifies the assembly process of the battery assembly, because there is no need to consider the interference of the folding margin during installation, which helps to improve production efficiency and reduce manufacturing costs.

[0021] Preferably, the folded margin is partially cut off, and both ends of the folded portion protrude from the middle section of the folded portion.

[0022] The practice of partially cutting off the folding margins makes the battery assembly lightweight while maintaining the necessary mechanical strength. This design effectively reduces the weight of the battery assembly without sacrificing battery performance, which means longer battery life and a better carrying experience for mobile devices and portable electronic products. In addition, the partially cut folding margins visually create a smooth line, which improves the aesthetics of the battery assembly. In some high-end or customized electronic products, this design can be used as a visual element to enhance the overall design of the product.

[0023] Preferably, the tab assembly includes a positive tab and a negative tab.

[0024] A terminal device comprises the battery assembly as described above.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The battery assembly of the utility model realizes efficient use of space and comprehensive improvement of battery performance through the ingenious layout of the folded protective film, the tab assembly and the tab glue, which not only improves the compactness and stability of the battery assembly, but also provides greater flexibility for the design and manufacture of terminal equipment, and helps to promote the development of electronic products in a lighter, thinner and more efficient direction.

[0027] Specifically, the folding process of the protective film on the top of the battery body is a key innovation, which not only optimizes the packaging size of the battery assembly, but also significantly improves the space utilization efficiency. Through the carefully designed folding portion on the top of the battery body, the protective film achieves compact packaging, thereby providing more space for the layout of other components. This design strategy is particularly important when the battery assembly is installed in the terminal device, because it allows the overall structural size of the battery assembly to be further reduced through the bending action of the tab bending portion. The design of the tab assembly also reflects a deep understanding of space optimization. The ingenious layout of the first and second tabs, as well as the precise design of the tab bending portion, together achieve the purpose of minimizing the volume of the battery assembly while maintaining functional integrity. This design not only improves the compactness of the battery assembly, but also provides greater flexibility for the layout of other key components inside the device. The application of tab glue further enhances the structural stability of the battery assembly and the reliability of the electrical connection. It only covers the surface of the first pole ear. This selective coating not only ensures the functional integrity of the pole ear part, but also effectively reduces the use of unnecessary materials, thereby reducing costs and improving production efficiency. Most importantly, because the surface of the bent part of the pole ear is not covered with the pole ear glue, the bent part of the pole ear is easier to fold, which greatly reduces the production difficulty and improves the product yield. At the same time, the presence of the pole ear glue on the surface of the first pole ear ensures the wear resistance and fracture resistance of the pole ear during long-term use, providing a guarantee for the long-term stable operation of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a structural diagram of the battery assembly of Example 1 of the utility model.

[0030] Figure 2 for Figure 1 Magnified view of area A.

[0031] Figure 3 This is a structural diagram of the battery assembly of Example 2 of the utility model.

[0032] Figure 4 for Figure 3 Magnified view of area B.

[0033] Figure 5 This is a structural diagram of the battery assembly of Example 3 of the utility model.

[0034] Figure 6 for Figure 5 Magnified view of area C.

[0035] Figure 7 This is a structural diagram of the battery assembly of Example 4 of the utility model.

[0036] Figure 8 for Figure 7 Magnified view of area D in the middle. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0041] The technical solution in this application will be described below in conjunction with the accompanying drawings. Example 1

[0042] The present embodiment provides a battery assembly, including a battery body; a protective film 110, which surrounds the battery body and is folded at the top of the battery body to form a folding portion 111; a tab assembly 120, which extends from the inside of the protective film 110 and is in close contact with the upper and lower surfaces of the folding portion 111, and the tab assembly 120 is bent along the upper and lower surfaces of the folding portion 111, and the tab assembly 120 includes a first tab portion 121 extending from the inside of the protective film 110 and in close contact with the lower surface of the folding portion 111, a tab bending portion 122 connected to the first tab portion 121, and a second tab portion 123 connected to the tab bending portion 122 and in close contact with the upper surface of the folding portion 111; and tab glue, which only covers the surface of the first tab portion 121. In the present embodiment, the tab assembly 120 includes a positive tab and a negative tab.

[0043] The battery assembly of this design achieves efficient use of space and comprehensive improvement of battery performance through the clever layout of the folding protective film 110, the tab assembly 120 and the tab glue. It not only improves the compactness and stability of the battery assembly, but also provides greater flexibility for the design and manufacture of terminal equipment, which helps to promote the development of electronic products in a lighter, thinner and more efficient direction.

[0044] Specifically, the folding process of the protective film 110 at the top of the battery body is a key innovation, which not only optimizes the packaging size of the battery assembly, but also significantly improves the space utilization efficiency. Through the carefully designed folding portion 111 at the top of the battery body, the protective film 110 achieves compact packaging, thereby providing more space for the layout of other components. This design strategy is particularly important when the battery assembly is installed in the terminal device, because it allows the overall structural size of the battery assembly to be further reduced through the bending action of the pole ear bending portion 122. The design of the pole ear assembly 120 also reflects a deep understanding of space optimization. The ingenious layout of the first pole ear portion 121 and the second pole ear portion 123, as well as the precise design of the pole ear bending portion 122, together achieve the purpose of minimizing the volume of the battery assembly while maintaining functional integrity. This design not only improves the compactness of the battery assembly, but also provides greater flexibility for the layout of other key components inside the device. The application of pole ear glue further enhances the structural stability of the battery assembly and the reliability of electrical connections. It only covers the surface of the first pole ear portion 121. This selective coating not only ensures the functional integrity of the pole ear part, but also effectively reduces the use of unnecessary materials, thereby reducing costs and improving production efficiency. Most importantly, because the surface of the pole ear bending portion 122 is not covered with the pole ear glue, the pole ear bending portion 122 is easier to fold, which greatly reduces the production difficulty and improves the product yield. At the same time, the presence of the pole ear glue on the surface of the first pole ear portion 121 ensures the wear resistance and fracture resistance of the pole ear during long-term use, which provides a guarantee for the long-term stable operation of the battery.

[0045] In this embodiment, the tab glue is completely hidden in the lower surface of the folded portion 111 .

[0046] The design details of the tab glue further reflect the fine control of the battery assembly performance. In the preferred embodiment, the tab glue is completely hidden in the lower surface of the folded portion 111. This design not only improves the overall aesthetics of the battery assembly, but also reduces the impact of external factors that may affect the tab glue in extreme environments, such as temperature changes, humidity or chemical corrosion, thereby extending the service life of the battery.

[0047] In this embodiment, two ends of the folding portion 111 are folding edges protruding from the middle section of the folding portion 111 .

[0048] The two ends of the folding portion 111 are designed as raised folding margins, and this structural feature brings additional mechanical strength to the battery assembly. The folding margins are like reinforcing ribs, which can provide additional support when the battery is subjected to external forces, thereby reducing deformation or damage caused by external forces. This design not only improves the mechanical stability of the battery, but also provides a clear reference point for the positioning of the ear glue, making the position of the ear glue more accurate during the assembly process, thereby improving the assembly quality of the entire battery assembly. Example 2

[0049] The present embodiment provides a battery assembly, including a battery body; a protective film 210, which surrounds the battery body and is folded at the top of the battery body to form a folding portion 211; a tab assembly 220, which extends from the inside of the protective film 210 and is in close contact with the upper and lower surfaces of the folding portion 211, and the tab assembly 220 is bent along the upper and lower surfaces of the folding portion 211, and the tab assembly 220 includes a first tab portion 221 extending from the inside of the protective film 210 and in close contact with the lower surface of the folding portion 211, a tab bending portion 222 connected to the first tab portion 221, and a second tab portion 223 connected to the tab bending portion 222 and in close contact with the upper surface of the folding portion 211; and a tab glue 230, which only covers the surface of the first tab portion 221. In the present embodiment, the tab assembly 220 includes a positive tab and a negative tab.

[0050] The battery assembly of this design achieves efficient use of space and comprehensive improvement of battery performance through the clever layout of the folding protective film 210, the tab assembly 220 and the tab glue 230, which not only improves the compactness and stability of the battery assembly, but also provides greater flexibility for the design and manufacture of terminal equipment, helping to promote the development of electronic products in a lighter, thinner and more efficient direction.

[0051] Specifically, the folding process of the protective film 210 at the top of the battery body is a key innovation, which not only optimizes the packaging size of the battery assembly, but also significantly improves the space utilization efficiency. Through the carefully designed folding portion 211 at the top of the battery body, the protective film 210 achieves compact packaging, thereby providing more space for the layout of other components. This design strategy is particularly important when the battery assembly is installed in the terminal device, because it allows the overall structural size of the battery assembly to be further reduced through the bending action of the pole ear bending portion 222. The design of the pole ear assembly 220 also reflects a deep understanding of space optimization. The ingenious layout of the first pole ear portion 221 and the second pole ear portion 223, as well as the precise design of the pole ear bending portion 222, together achieve the purpose of minimizing the volume of the battery assembly while maintaining functional integrity. This design not only improves the compactness of the battery assembly, but also provides greater flexibility for the layout of other key components inside the device. The application of the pole ear glue 230 further enhances the structural stability of the battery assembly and the reliability of the electrical connection. It only covers the surface of the first pole ear portion 221. This selective coating not only ensures the functional integrity of the pole ear portion, but also effectively reduces the use of unnecessary materials, thereby reducing costs and improving production efficiency. Most importantly, because the surface of the pole ear bending portion 222 is not covered with the pole ear glue 230, the pole ear bending portion 222 is easier to be folded, which greatly reduces the production difficulty and improves the product yield. At the same time, the presence of the pole ear glue 230 on the surface of the first pole ear portion 221 ensures the wear resistance and fracture resistance of the pole ear during long-term use, which provides a guarantee for the long-term stable operation of the battery.

[0052] In this embodiment, a portion of the tab adhesive 230 is hidden under the lower surface of the folded portion 211 , and another portion is exposed outside the folded portion 211 , and the tab adhesive 230 does not extend to the bent portion.

[0053] In another preferred embodiment, part of the tab glue 230 is hidden in the lower surface of the folding portion 211, and the other part is exposed outside the folding portion 211 and does not extend to the bending portion. This design strategy allows the tab glue 230 to provide the necessary bonding strength while maintaining a certain degree of elasticity so as to adapt to different mechanical stresses during battery assembly and disassembly. In addition, the tab glue 230 that does not extend to the bending portion reduces the potential obstruction to the tab bending portion 222, making the folding of the tab bending portion 222 smoother and improving assembly efficiency.

[0054] In this embodiment, two ends of the folding portion 211 are folding edges protruding from the middle section of the folding portion 211 .

[0055] The two ends of the folding portion 211 are designed as raised folding margins, and this structural feature brings additional mechanical strength to the battery assembly. The folding margins are like reinforcing ribs, which can provide additional support when the battery is subjected to external forces, thereby reducing deformation or damage caused by external forces. This design not only improves the mechanical stability of the battery, but also provides a clear reference point for the positioning of the ear glue 230, making the position of the ear glue 230 more accurate during the assembly process, thereby improving the assembly quality of the entire battery assembly. Example 3

[0056] The present embodiment provides a battery assembly, including a battery body; a protective film 310, which surrounds the battery body and is folded at the top of the battery body to form a folding portion 311; a tab assembly 320, which extends from the inside of the protective film 310 and is in close contact with the upper and lower surfaces of the folding portion 311, and the tab assembly 320 is bent along the upper and lower surfaces of the folding portion 311, and the tab assembly 320 includes a first tab portion 321 extending from the inside of the protective film 310 and in close contact with the lower surface of the folding portion 311, a tab bending portion 322 connected to the first tab portion 321, and a second tab portion 323 connected to the tab bending portion 322 and in close contact with the upper surface of the folding portion 311; and a tab glue 330, which only covers the surface of the first tab portion 321. In the present embodiment, the tab assembly 320 includes a positive tab and a negative tab.

[0057] The battery assembly of this design achieves efficient use of space and comprehensive improvement of battery performance through the ingenious layout of the folding protective film 310, the tab assembly 320 and the tab glue 330, which not only improves the compactness and stability of the battery assembly, but also provides greater flexibility for the design and manufacture of terminal equipment, helping to promote the development of electronic products towards lighter, thinner and more efficient directions.

[0058] Specifically, the folding process of the protective film 310 at the top of the battery body is a key innovation, which not only optimizes the packaging size of the battery assembly, but also significantly improves the space utilization efficiency. Through the carefully designed folding portion 311 at the top of the battery body, the protective film 310 achieves compact packaging, thereby providing more space for the layout of other components. This design strategy is particularly important when the battery assembly is installed in the terminal device, because it allows the overall structural size of the battery assembly to be further reduced through the bending action of the pole ear bending portion 322. The design of the pole ear assembly 320 also reflects a deep understanding of space optimization. The ingenious layout of the first pole ear portion 321 and the second pole ear portion 323, as well as the precise design of the pole ear bending portion 322, together achieve the purpose of minimizing the volume of the battery assembly while maintaining functional integrity. This design not only improves the compactness of the battery assembly, but also provides greater flexibility for the layout of other key components inside the device. The application of the pole ear glue 330 further enhances the structural stability of the battery assembly and the reliability of the electrical connection. It only covers the surface of the first pole ear portion 321. This selective coating not only ensures the functional integrity of the pole ear portion, but also effectively reduces the use of unnecessary materials, thereby reducing costs and improving production efficiency. Most importantly, because the surface of the pole ear bending portion 322 is not covered with the pole ear glue 330, the pole ear bending portion 322 is easier to be folded, which greatly reduces the production difficulty and improves the product yield. At the same time, the presence of the pole ear glue 330 on the surface of the first pole ear portion 321 ensures the wear resistance and fracture resistance of the pole ear during long-term use, which provides a guarantee for the long-term stable operation of the battery.

[0059] In this embodiment, a portion of the tab adhesive 330 is hidden under the lower surface of the folded portion 311 , and another portion is exposed outside the folded portion 311 , and the tab adhesive 330 does not extend to the bent portion.

[0060] In another preferred embodiment, part of the tab glue 330 is hidden in the lower surface of the folding portion 311, and the other part is exposed outside the folding portion 311 and does not extend to the bending portion. This design strategy allows the tab glue 330 to provide the necessary bonding strength while maintaining a certain degree of elasticity so as to adapt to different mechanical stresses during battery assembly and disassembly. In addition, the tab glue 330 that does not extend to the bending portion reduces the potential obstruction to the tab bending portion 322, making the folding of the tab bending portion 322 smoother and improving assembly efficiency.

[0061] In this embodiment, the protection film 310 is provided with a window 312 , and the portion of the tab glue 330 exposed from the folding portion 311 is disposed in the window 312 .

[0062] It is particularly worth mentioning that the window 312 design is set on the protective film 310, and the part of the tab glue 330 exposed from the folding part 311 is exactly located at the window 312. This design makes the position of the tab glue 330 easy to identify and check, and is convenient for maintenance and replacement. The setting of the window 312 may also provide reserved space for future battery technology upgrades, such as integrating sensors or tracking chips, and provide the possibility for the realization of an intelligent battery management system.

[0063] In this embodiment, the portion of the tab glue 330 exposed from the folded portion 311 is 0.02 mm.

[0064] In the design of this embodiment, the portion of the ear glue 330 exposed from the folding portion 311 is precisely controlled within the range of 0.02 mm. This detail design significantly improves the overall performance of the battery assembly. The thickness of the ear glue 330 is directly related to its bonding strength and conductivity. Too thick or too thin may affect the performance of the battery. The thickness range of 0.02 mm ensures that the ear glue 330 can provide sufficient bonding strength to ensure a firm connection between the battery ear and the conductive circuit, while maintaining a low resistance, which is conducive to efficient conduction of current. This precise control not only improves the energy conversion efficiency of the battery, but also helps to reduce energy loss during transmission.

[0065] In this embodiment, two ends of the folding portion 311 are folding edges protruding from the middle section of the folding portion 311 .

[0066] The two ends of the folding portion 311 are designed as raised folding margins, and this structural feature provides additional mechanical strength for the battery assembly. The folding margins are like reinforcing ribs, which can provide additional support when the battery is subjected to external forces, thereby reducing deformation or damage caused by external forces. This design not only improves the mechanical stability of the battery, but also provides a clear reference point for the positioning of the ear glue 330, making the position of the ear glue 330 more accurate during the assembly process, thereby improving the assembly quality of the entire battery assembly. Example 4

[0067] The present embodiment provides a battery assembly, including a battery body; a protective film 410, which surrounds the battery body and is folded at the top of the battery body to form a folded portion; a pole ear assembly 420, which extends from the inside of the protective film 410 and is in close contact with the upper and lower surfaces of the folded portion, and the pole ear assembly 420 is bent along the upper and lower surfaces of the folded portion, and the pole ear assembly 420 includes a first pole ear portion 421 extending from the inside of the protective film 410 and in close contact with the lower surface of the folded portion, a pole ear bending portion 422 connected to the first pole ear portion 421, and a second pole ear portion 423 connected to the pole ear bending portion 422 and in close contact with the upper surface of the folded portion; and a pole ear glue 430, and the pole ear glue 430 only covers the surface of the first pole ear portion 421.

[0068] The battery assembly of this design achieves efficient use of space and comprehensive improvement of battery performance through the ingenious layout of the folding protective film 410, the tab assembly 420 and the tab glue 430, which not only improves the compactness and stability of the battery assembly, but also provides greater flexibility for the design and manufacture of terminal equipment, helping to promote the development of electronic products in a lighter, thinner and more efficient direction.

[0069] Specifically, the folding process of the protective film 410 at the top of the battery body is a key innovation, which not only optimizes the packaging size of the battery assembly, but also significantly improves the space utilization efficiency. Through the carefully designed folding portion at the top of the battery body, the protective film 410 achieves compact packaging, thereby providing more space for the layout of other components. This design strategy is particularly important when the battery assembly is installed in the terminal device, because it allows the overall structural size of the battery assembly to be further reduced through the bending action of the pole ear bending portion 422. The design of the pole ear assembly 420 also reflects a deep understanding of space optimization. The ingenious layout of the first pole ear portion 421 and the second pole ear portion 423, as well as the precise design of the pole ear bending portion 422, together achieve the purpose of minimizing the volume of the battery assembly while maintaining functional integrity. This design not only improves the compactness of the battery assembly, but also provides greater flexibility for the layout of other key components inside the device. The application of the pole ear glue 430 further enhances the structural stability of the battery assembly and the reliability of the electrical connection. It only covers the surface of the first pole ear portion 421. This selective coating not only ensures the functional integrity of the pole ear portion, but also effectively reduces the use of unnecessary materials, thereby reducing costs and improving production efficiency. Most importantly, because the surface of the pole ear bending portion 422 is not covered with the pole ear glue 430, the pole ear bending portion 422 is easier to be folded, which greatly reduces the production difficulty and improves the product yield. At the same time, the presence of the pole ear glue 430 on the surface of the first pole ear portion 421 ensures the wear resistance and fracture resistance of the pole ear during long-term use, which provides a guarantee for the long-term stable operation of the battery.

[0070] In this embodiment, a portion of the tab adhesive 430 is hidden under the lower surface of the folded portion, and another portion is exposed outside the folded portion, and the tab adhesive 430 does not extend to the bent portion.

[0071] In another preferred embodiment, part of the tab glue 430 is hidden under the lower surface of the folded portion, and the other part is exposed outside the folded portion and does not extend to the bent portion. This design strategy allows the tab glue 430 to provide the necessary bonding strength while maintaining a certain degree of elasticity so as to adapt to different mechanical stresses during battery assembly and disassembly. In addition, the tab glue 430 that does not extend to the bent portion reduces the potential obstruction to the tab bent portion 422, making the folding of the tab bent portion 422 smoother and improving assembly efficiency.

[0072] In this embodiment, the folded margin is cut off, and the two ends 440 of the folded portion are kept flush with the middle section of the folded portion.

[0073] In some application scenarios, the folding margin may affect the overall size of the battery assembly, or may not meet the requirements in a specific installation environment. Therefore, in this embodiment, the design also provides the option of cutting off the folding margin, that is, removing the folding margin through a precise processing process so that the two ends of the folded portion remain flush with the middle section. The flexibility of this design enables the battery assembly to adapt to different installation environments and space requirements, while also providing the possibility for lightweight design of the battery. After cutting off the folding margin, the overall size of the battery assembly is optimized, which helps save space and improves the overall design flexibility of the terminal device. At the same time, the flush folding portion also simplifies the assembly process of the battery assembly, because there is no need to consider the interference of the folding margin during installation, which helps to improve production efficiency and reduce manufacturing costs.

[0074] In other embodiments, the folded margin is partially cut off, and both ends of the folded portion protrude from the middle section of the folded portion.

[0075] The practice of partially cutting off the folding margins makes the battery assembly lightweight while maintaining the necessary mechanical strength. This design effectively reduces the weight of the battery assembly without sacrificing battery performance, which means longer battery life and a better carrying experience for mobile devices and portable electronic products. In addition, the partially cut folding margins visually create a smooth line, which improves the aesthetics of the battery assembly. In some high-end or customized electronic products, this design can be used as a visual element to enhance the overall design of the product.

[0076] The above-mentioned battery assembly can be directly applied to a terminal device, and the terminal device is powered by the battery assembly.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery assembly, characterized in that: include Battery body; A protective film, surrounding the battery body and folded at the top of the battery body to form a folded portion; The pole ear assembly extends from the inside of the protective film and is close to the upper and lower surfaces of the folding portion. The pole ear assembly is bent along the upper and lower surfaces of the folding portion. The pole ear assembly includes a first pole ear portion extending from the inside of the protective film and close to the lower surface of the folding portion, a pole ear bending portion connected to the first pole ear portion, and a second pole ear portion connected to the pole ear bending portion and close to the upper surface of the folding portion. The pole ear glue only covers the surface of the first pole ear portion.

2. The battery assembly according to claim 1, characterized in that: The ear glue is completely hidden in the lower surface of the folded portion.

3. The battery assembly according to claim 1, characterized in that: A portion of the tab glue is hidden under the lower surface of the folded portion, and another portion is exposed outside the folded portion, and the tab glue does not extend to the bent portion.

4. The battery assembly according to claim 3, characterized in that: The protective film is provided with a window, and the portion of the tab glue exposed from the folded portion is provided in the window.

5. The battery assembly according to claim 3, characterized in that: The portion of the tab glue exposed from the folded portion is 0.02 mm.

6. The battery assembly according to claim 1, characterized in that: The two ends of the folding portion are folding margins protruding from the middle section of the folding portion.

7. The battery assembly according to claim 6, characterized in that: The folded margin is cut off, and the two ends of the folded portion are kept flush with the middle section of the folded portion.

8. The battery assembly according to claim 6, characterized in that: The folded margin is partially cut off, and the two ends of the folded portion are protruded from the middle section of the folded portion.

9. The battery assembly according to claim 1, characterized in that: The tab assembly includes a positive tab and a negative tab.

10. A terminal device, characterized in that: A battery assembly comprising the battery assembly as claimed in any one of claims 1 to 9.

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