Battery and electronic equipment

Abstract

The utility model relates to the technical field of battery safety, and provides a battery and electronic equipment, the battery comprises a shell, a naked battery cell, a pole and upper plastic cement, one end of the shell is provided with a pole hole, the naked battery cell is arranged in the shell, the pole is inserted in the pole hole and is electrically connected with the naked battery cell, the outer end of the pole is provided with a riveting part extending along a first direction, and the upper plastic cement is arranged on the shell. The upper plastic surrounds the pole hole on the outer side of the shell, the upper plastic comprises a base part and a first extension part, the base part is located between the riveting part and the shell, the first extension part extends to the edge of the riveting part in the first direction in the second direction, and the riveting part abuts against the first extension part. The design can effectively prevent the pole from loosening or shifting caused by external force or vibration in the use process, so that the long-term stability of the structure of the battery is ensured, and the internal short circuit, damage or failure of the battery caused by the loosening of the assembly is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery safety technical field, especially relate to a battery and electronic equipment. BACKGROUND

[0002] In the process of encapsulating the battery cell (such as cylindrical battery), the riveting and flanging technology is widely used in the connection of the pole and the shell.

[0003] Because the riveting and flanging width of the pole cannot be too large, the excessively extended flange surface is difficult to be formed flat, and the bending moment of the pole is increased, and the structural strength is insufficient.Under this condition, the contact area between the riveting and flanging and the upper plastic is compressed, and the compression density is reduced, which may cause the relative displacement or rotation between the upper plastic and the pole, and further affect the overall stability of the assembly. SUMMARY

[0004] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a battery and electronic equipment to prevent the assembly of the battery from loosening.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a battery, which comprises:

[0006] A shell, one end of the shell is provided with a pole hole;

[0007] A bare battery cell, the bare battery cell is arranged in the shell;

[0008] A pole, the pole is inserted into the pole hole and electrically connected with the bare battery cell, and the outer end of the pole is provided with a riveting part extending in a first direction;

[0009] An upper plastic, the upper plastic is arranged around the pole hole on the outer side of the shell, and the upper plastic comprises a base and a first extension part, and the base is located between the riveting part and the shell;

[0010] Wherein, the first extension part extends to the edge of the riveting part in the first direction, and the riveting part and the first extension part are in abutment.

[0011] In an optional embodiment of the utility model, the edge of the riveting part in the first direction and the first extension part form an interference fit in the first direction.

[0012] In an optional embodiment of the utility model, the included angle between the side surface of the first extension part away from the riveting part and the outer end surface of the shell is a right angle or an acute angle.

[0013] In an optional embodiment of this utility model, the angle between the side surface of the first extension near the riveting part and the outer side surface of the base is a right angle or an obtuse angle.

[0014] In an optional embodiment of this utility model, the distance between the outer end face of the pole post and the outer end face of the base is 0.8-2.0 mm.

[0015] In an optional embodiment of this utility model, the extension width of the riveting portion in the first direction is 0.3-2.5mm.

[0016] In an optional embodiment of the present invention, the riveting portion includes a flange, which is disposed on the edge of the riveting portion in a first direction, and the flange abuts against the outer end of the first extension portion in a second direction.

[0017] In an optional embodiment of this utility model, a rigid sheet is provided between the base and the riveting portion, surrounding the pole post.

[0018] In an optional embodiment of this utility model, the thickness of the rigid sheet in the second direction is 0.1-0.8 mm.

[0019] In an optional embodiment of this invention, the hardness of the material of the rigid sheet is greater than the hardness of the surface of the pole post.

[0020] In an optional embodiment of this utility model, the extension distance of the riveting portion in the first direction exceeds that of the hard sheet, and the distance between the edge of the riveting portion and the hard sheet in the first direction is 0.05-0.5mm.

[0021] In an optional embodiment of this utility model, the difference between the hardness value of the material of the rigid sheet and the hardness value of the surface of the pole post is at least greater than 5HV.

[0022] In an optional embodiment of this utility model, the distance between the edge of the rigid sheet near the pole post and the pole post at the corresponding position in the first direction is 0-0.4 mm.

[0023] In an optional embodiment of this utility model, the base is recessed in the region corresponding to the rigid sheet, and the recess depth is greater than 0.03 mm.

[0024] In an optional embodiment of this utility model, the thickness of the flange in the second direction is greater than or equal to 0.02 mm.

[0025] In an optional embodiment of this utility model, the width of the flange in the first direction is 0.05-0.4mm.

[0026] This invention also proposes an electronic device, including the aforementioned battery.

[0027] The technical advantage of this invention lies in the fact that the riveted part of the terminal post is tightly abutted against the first extension of the upper plastic, ensuring a more uniform and stable pressing force between the riveted part and the shell. This design effectively prevents the terminal post from loosening or shifting due to external force or vibration during use, thereby ensuring the long-term stability of the battery structure and avoiding internal short circuits, damage, or failure caused by loose components. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the battery structure in one embodiment of the present invention;

[0030] Figure 2 for Figure 1 Enlarged view of part A;

[0031] Figure 3 for Figure 2 Enlarged view of part B;

[0032] Figure 4 This is a schematic diagram of the structure of the semi-finished battery in Embodiment 1 of this utility model;

[0033] Figure 5 for Figure 4 Enlarged view of part C;

[0034] Figure 6 This is a schematic diagram of the battery structure in another embodiment of the present invention;

[0035] Figure 7 for Figure 6 Enlarged view of part F;

[0036] Figure 8 for Figure 7 Enlarged view of section H.

[0037] Explanation of reference numerals in the attached drawings: 10, housing; 20, pole post; 21, riveting part; 22, flange; 30, upper plastic; 31, base; 32, first extension; 33, second extension; 40, rigid sheet; 50, sealing ring; 60, lower plastic. Detailed Implementation

[0038] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0039] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0040] In the packaging process of cylindrical batteries and other battery cells, external riveting and flanging technology is the mainstream solution for connecting the terminals to the casing and is widely used in battery structural assembly. This process ensures the mechanical strength and sealing of the battery by connecting the terminals to the casing through flanging. However, external riveting and flanging technology faces many technical bottlenecks in practical applications, limiting its further optimization and application in large-scale production.

[0041] A key issue in the external riveting and flanging process is the strict control of the flanging width; it cannot be too large. A narrower flanging can lead to uneven material stretching, making it difficult to achieve a smooth molding effect. This not only increases the complexity of the production process but also significantly increases the bending moment borne by the terminal post, causing localized stress concentration and weakening the overall structural strength. Simultaneously, the contact area between the flanging surface and the upper plastic layer is also affected, resulting in insufficient bonding tightness. This insufficient contact may cause relative displacement or rotation between the upper plastic layer and the terminal post, thus affecting the assembly stability of the component and even leading to reliability issues during long-term use, impacting the battery's safety and performance.

[0042] Error control in traditional external riveting processes is also a major challenge. During the flanging process, the springback effect of the material and insufficient mold precision often result in excessively large fillets or fluctuations in the geometric dimensions of the flanged edges. These errors directly affect the fit accuracy with the upper plastic, leading to loose mating surfaces and increasing the difficulty of component assembly.

[0043] To achieve the above objectives and other related objectives, such as Figures 1-8 As shown, this utility model proposes a battery, taking a cylindrical battery as an example, including a casing 10, a bare cell, terminals 20, and an upper plastic 30. The first direction is the radial direction of the terminal hole, and the second direction is the axial direction of the terminal hole.

[0044] The housing 10 is an encapsulated structure, and the battery cell (bare cell) is disposed inside the housing 10. To achieve internal electrical connection of the battery, a terminal hole is provided at one end of the housing 10. This hole provides a channel for inserting the terminal 20 and connecting it to the battery cell, thereby realizing the battery's electrical connection function.

[0045] The terminal post 20 is a crucial part of the battery's electrical connection, inserted into the terminal post hole to connect with the bare battery cell. The outer end of the terminal post 20 has a riveting part 21, which extends along a first direction and is fixed to the housing 10 through a riveting process. At the bending points of the terminal post 20 (such as the angle between the riveting part 21 and the main body of the terminal post 20), a non-90-degree transition structure (such as a rounded R-angle or a beveled transition) is used, replacing the traditional right-angle bend. This design, through geometric optimization, reserves extrusion space for material flow during bending, avoiding stress concentration caused by localized material accumulation or insufficient stretching. The R-angle range is set according to the ductility of the terminal post 20 material (such as aluminum or copper alloy) to ensure uniform material stretching during bending while avoiding excessive deformation. Micro-protrusions or grooves are designed adjacent to the bending area to provide a buffer for material flow, preventing surface wrinkles or cracks caused by excessive material extrusion during bending.

[0046] The upper plastic 30 surrounds the pole hole on the outside of the housing 10. The upper plastic 30 includes a base 31 and a first extension 32. The base 31 is located between the riveting part 21 and the housing 10.

[0047] Wherein, the first extension 32 extends along the second direction to the edge of the riveting part 21 in the first direction, and the riveting part 21 abuts against the first extension 32.

[0048] like Figure 4 , 5 As shown, in the semi-finished state, a gap S is reserved between the edge of the riveting part 21 and the first extension part 32 to provide deformation space for subsequent processes. By performing an integral flattening operation on the outer riveting part 21, the riveting part 21 is forced to extend and deform radially (in the first direction), thereby actively squeezing the first extension part 32. This phased design can avoid edge warping caused by insufficient material extension during traditional external riveting and flanging, and can also precisely control the final clamping amount.

[0049] During the flattening process, the radial extension of the riveting part 21 causes it to change from a gap state to a tight abutment with the first extension part 32, forming an active pressing that goes from loose to tight. The contact surface pressure generated by this dynamic deformation is much higher than the preload of static assembly, but more reliable mechanical locking is achieved through plastic deformation.

[0050] like Figure 3As shown, the upper plastic 30 also includes a second extension 33, which is embedded in the gap between the electrode post 20 and the electrode post hole. The embedding depth of the second extension 33 is D, and the thickness of the housing 10 at the end corresponding to the electrode post hole is T. The relationship between the depth D and the thickness T is: D = 0.05T ~ 0.95T, preferably D = 0.1T ~ 0.9T. By limiting the ratio range of the embedding depth D of the second extension 33 to the thickness T of the housing 10, it is ensured that the extension can fully occupy the gap between the electrode post 20 and the electrode post hole to achieve insulation isolation. The first extension 32 and the second extension 33 form a three-dimensional covering structure. The first extension 32 constrains the rotation tendency of the electrode post 20, and the second extension 33 suppresses the radial displacement of the electrode post 20. At the same time, both together isolate the direct contact between the electrode post 20 and the housing 10, constructing multiple insulation barriers.

[0051] The ratio of the embedment depth D of the second extension 33 to the thickness T of the housing 10, within the range of D = 0.05T to 0.95T, ensures an ideal structural balance. An appropriate embedment depth allows the second extension 33 to fully occupy the gap between the pole post 20 and the pole post hole, providing insulation without compromising the mechanical strength of the housing 10. Especially within the preferred range of D = 0.1T to 0.9T, ideal insulation is achieved without causing localized weakening or cracking of the housing 10.

[0052] like Figures 1-3 As shown, the edge of the riveting portion 21 in the first direction forms an interference fit with the first extension portion 32 in the first direction. This interference fit design ensures a very tight connection between the riveting portion 21 and the first extension portion 32. During the riveting process, the contact area between the edge of the riveting portion 21 and the first extension portion 32 is forcibly pressed together, generating a certain mechanical stress. This stress makes the connection more robust, effectively avoiding the risk of loosening during later use. This is crucial for the overall stability of the battery, especially under prolonged use or vibration conditions, preventing poor electrical contact or structural failure between the terminal post 20 and the casing 10 due to excessive loosening.

[0053] like Figure 3 As shown, the angle between the surface of the first extension 32 away from the riveting part 21 and the outer end face of the housing 10 is P, where 0 degrees < P ≤ 90 degrees. This angle is mainly formed by deformation during assembly due to the contact between the riveting part 21 and the first extension 32. The existence of angle P means that a specific deformation angle is formed between the riveting part 21 and the first extension 32, making the connection more stable. In particular, during riveting, the deformation generates an effective mechanical lock, preventing the pole post 20 and the housing 10 from loosening due to external forces.

[0054] like Figure 3As shown, the angle between the surface of the first extension 32 near the riveting part 21 and the outer surface of the base 31 is Q, where Q ≥ 90 degrees. The angle Q design creates a large obtuse or right angle between the first extension 32 near the riveting part 21 and the base 31, thereby enhancing the rigidity of the structure. This large angle design effectively reduces deformation caused by external forces, increasing the overall strength of the battery assembly.

[0055] like Figure 2 As shown, the distance between the outer end face of the electrode post 20 and the outer end face of the base 31 is T2 = 0.8-2.0 mm, preferably T2 = 1.2-1.6 mm. The outer end refers to the end furthest from the battery cell. The lower limit (0.8 mm) ensures the minimum effective thickness of the base 31, preventing the electrode post 20 from directly contacting the casing 10 or breaking through the insulation layer, while maintaining a baseline for buffer performance. The upper limit (2.0 mm) avoids excessive spacing leading to insufficient elastic support of the upper plastic 30, weakening its vibration resistance. The preferred range (1.2-1.6 mm) comprehensively balances insulation reliability (thickness requirements) and space utilization (compact design), adapting to the size constraints of mainstream cylindrical batteries.

[0056] like Figure 2 As shown, the extension width of the riveting portion 21 in the first direction is W4 = 0.3-2.5 mm, preferably W4 = 1.0-1.5 mm. The radial extension width W4 of the riveting portion 21 determines its bending resistance and directly affects the stability of the pole post 20 under vibration or external load. If the width is too small (<0.3 mm), the riveting flange 22 will be incomplete; if it is too large (>2.5 mm), it will increase material costs and may interfere with adjacent structures. The lower limit (0.3 mm) meets the minimum forming width requirement of the riveting flange 22 process, ensuring the structural integrity of the riveting portion 21. The upper limit (2.5 mm) adapts to the space constraints of the end face of the housing 10, avoiding interference with surrounding components. The preferred range (1.0-1.5 mm) is within the yield strength range of the mainstream pole post 20 material (such as aluminum or copper alloy), maximizing the bending section modulus while controlling the amount of material used.

[0057] like Figures 6-8 As shown, the riveting portion 21 includes a flange 22, which is disposed on the edge of the riveting portion 21 in a first direction. The flange 22 and the outer end of the first extension 32 form an abutment in a second direction. The abutment interface of the flange 22 in the second direction and the radial interference fit form an orthogonal constraint, which transforms the rotational tendency of the upper plastic 30 into a combined load of shear stress and compressive stress on the contact surface. Compared with the constraint scheme in a single first direction, the torque resistance is improved. The axial pressing force of the flange 22 is transmitted to the base 31 through the first extension 32, making the contact pressure distribution between the upper plastic 30 and the housing 10 more uniform and avoiding plastic creep or cracking caused by excessive local stress.

[0058] like Figure 2 As shown, a rigid sheet 40 is provided between the base 31 and the riveting portion 21, surrounding the pole post 20. The rigid sheet 40 is specifically a metal sheet. As a rigid support layer, the rigid sheet 40 disperses the riveting force and suppresses the creep of the plastic base 31, preventing sealing failure or dimensional deformation caused by the riveting portion 21 crushing the base 31 during riveting. When riveting is flattened, the rigid surface of the rigid sheet 40 guides the pole post 20 material to extend in a predetermined direction, ensuring consistent forming of the flange 22.

[0059] like Figure 2 As shown, the thickness T1 of the rigid sheet 40 in the second direction is 0.1-0.8 mm, preferably 0.3-0.5 mm. The lower limit (0.1 mm) meets the minimum rigidity support requirement and prevents the rigid sheet 40 from bending and deforming (critical buckling thickness). The upper limit (0.8 mm) avoids excessive weight increase (the rigid sheet 40 accounts for less than 0.5% of the assembly's mass) and interference with adjacent structures (such as explosion-proof valves). The preferred range (0.3-0.5 mm) balances lightweighting and compressive strength, and is compatible with the wall thickness (0.6-1.2 mm) of mainstream cylindrical battery casings 10.

[0060] In an optional embodiment of this invention, the material hardness of the rigid sheet 40 is greater than the surface hardness of the pole post 20. The difference between the material hardness value of the rigid sheet 40 and the surface hardness value of the pole post 20 is at least greater than 5 HV (Vickers hardness). The rigid sheet 40 (HV300) is significantly higher than that of the pole post 20 (aluminum HV80-120). During riveting and flattening, the rigid sheet 40 acts as a rigid support layer, forcing the material of the pole post 20 to extend radially (rather than compressing the plastic base 31), thereby protecting the geometric integrity of the plastic base 31, avoiding crushing deformation, ensuring uniform forming of the flange 22 of the riveted part 21, and improving torsional resistance.

[0061] like Figure 2 As shown, the outer diameter D1 of the riveting portion 21 is greater than the outer diameter D2 of the rigid sheet 40. The extension distance of the riveting portion 21 in the first direction exceeds that of the rigid sheet 40, and the distance between the edge of the riveting portion 21 and the rigid sheet 40 in the first direction is D1-D2 = 0.05-0.5 mm, preferably D1-D2 = 0.1-0.3 mm. The outer diameter of the riveting portion 21 exceeds that of the rigid sheet 40, forming an annular extension area, ensuring that the riveting force is preferentially applied to the periphery of the rigid sheet 40, and then the pressure is evenly transmitted to the base 31 through the rigid sheet 40, avoiding local stress concentration. Preferably, when the difference is 0.1-0.3 mm, the edge extension of the riveting portion 21 can fully fill the gap between the rigid sheet 40 and the upper plastic 30, forming a metal-plastic interlocking structure.

[0062] like Figure 2As shown, the inner diameter D3 of the rigid sheet 40 is greater than the outer diameter D4 of the corresponding pole post 20. The distance between the edge of the rigid sheet 40 near the pole post 20 and the corresponding pole post 20 in the first direction is D3-D4 = 0-0.4 mm, preferably D3-D4 = 0-0.2 mm. The inner diameter D3 of the rigid sheet 40 is slightly larger than the outer diameter D4 of the pole post 20 (0-0.4 mm gap) to ensure that the rigid sheet 40 can be easily fitted into the pole post 20, avoiding assembly resistance or scratches on the surface of the pole post 20 due to interference fit.

[0063] like Figure 2 As shown, the base 31 is recessed in the area corresponding to the rigid sheet 40, and the recess depth is greater than 0.03 mm. During riveting, the rigid sheet 40 is pressed into the plastic base 31 to form a mechanical anchor point. The recessed structure generates circumferential shear resistance, preventing relative rotation between the rigid sheet 40 and the upper plastic 30. The recessed area absorbs the internal stress caused by the difference in thermal expansion coefficients between the rigid sheet 40 and the plastic, thus avoiding interface cracking.

[0064] like Figure 8 As shown, the thickness T5 of the flange 22 in the second direction is ≥0.02mm. The thickness of the flange 22 ensures that the flange 22 has basic structural strength, resists shear stress during the riveting and flattening process, and avoids tearing or uncontrolled deformation due to excessively thin material.

[0065] like Figure 8 As shown, the width of the flange 22 in the first direction is W5 = 0.05-0.4mm. The thin and wide flange 22 design maximizes the contact surface pressure within a limited space, suppressing the rotational tendency of the upper plastic 30. The upper width limit (0.4mm) avoids excessive extension of the flange 22 leading to stress concentration, while also preventing interference with surrounding parts.

[0066] like Figure 2 As shown, a sealing ring 50 and a lower plastic 60 are provided between the inner end of the electrode post 20 and the housing 10. When compressed, at least a portion of the sealing ring 50 will contact the lower plastic 60. The distance from the outer edge of the compressed sealing ring 50 to the edge of the electrode post hole is W1, where W1 = 0.8-3.0 mm, preferably W1 = 1.2-2.3 mm. This ensures that the outer edge of the sealing ring 50 fully covers the machining tolerance area of ​​the electrode post hole (such as burrs or microcracks), blocking the electrolyte penetration path. The preferred range is adapted to the mainstream housing 10 wall thickness (0.6-1.5 mm), balancing the sealing coverage and thermal expansion buffering requirements.

[0067] like Figure 2As shown, the thickness E of the sealing ring 50 after compression is 0.4-1.0 mm, preferably 0.6-0.8 mm. This maintains a reasonable compression ratio of the elastomer (such as fluororubber), creating continuous compressive stress at the contact surface to meet sealing requirements. It also avoids excessive compression (>30%) that could lead to permanent material deformation or fatigue failure.

[0068] like Figure 2 As shown, the width of the sealing ring 50 in the first direction after compression is 0.8-3.0 mm, preferably 1.2-2.0 mm. The width of the sealing ring 50 after compression can be equal to W1. If the radial width of the sealing ring 50 after compression is equal to W1, a continuous and uninterrupted sealing band is formed, eliminating interface gaps.

[0069] like Figure 2 As shown, the distance W2 between the inner edge of the pole post 20 and the edge of the lower plastic 60 in the first direction is 0.2-4.0 mm, preferably W2 = 0.5-2.5 mm.

[0070] This invention also proposes an electronic device, including the aforementioned battery.

[0071] In summary, the tight contact between the riveting portion 21 of the terminal post 20 and the first extension 32 of the upper plastic 30 ensures a more uniform and stable pressing force between the riveting portion 21 and the housing 10. This design effectively prevents the terminal post 20 from loosening or shifting due to external forces or vibrations during use, thereby ensuring the long-term stability of the battery structure and avoiding internal short circuits, damage, or failure caused by component loosening. By designing the interference fit between the riveting portion 21 and the upper plastic 30 and the deformation forming a specific angle, the stability and anti-loosening ability of the connection are further improved. Precise control of the deformation angle and interference fit can effectively improve the durability of the battery, especially in long-term use or vibration environments, ensuring a stable and non-loose connection. By adding a rigid sheet 40 as a rigid support layer during the riveting process, the riveting force is dispersed and creep of the plastic base 31 is avoided, further improving the sealing performance and structural strength of the riveting portion 21. The thickness and material hardness of the rigid sheet 40 are carefully designed to ensure that it can effectively support the extension of the pole post 20 material and avoid uneven riveting flanges 22.

[0072] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0073] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0074] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0075] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0076] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0077] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0078] The above description of the embodiments shown in this utility model (including the content set forth in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments described herein, and such modifications will be within the spirit and scope of the utility model.

[0079] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0080] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A battery, characterized by, The battery comprises: a shell (10) having a pole hole at one end thereof; a bare cell disposed inside the shell (10); a pole (20) inserted into the pole hole and electrically connected to the bare cell, the pole (20) having a riveting portion (21) extending in a first direction at an outer end thereof; an upper plastic (30) surrounding the pole hole on the outside of the shell (10), the upper plastic (30) comprising a base portion (31) and a first extending portion (32), the base portion (31) being located between the riveting portion (21) and the shell (10); wherein the first extending portion (32) extends in a second direction to an edge of the riveting portion (21) in the first direction, and the riveting portion (21) abuts against the first extending portion (32).

2. The battery of claim 1, wherein, An interference fit in the first direction is formed between the edge of the riveting portion (21) in the first direction and the first extending portion (32).

3. The battery of claim 2, wherein, An included angle between a side surface of the first extending portion (32) away from the riveting portion (21) and an outer end surface of the shell (10) is a right angle or an acute angle.

4. The battery of claim 2, wherein, An included angle between a side surface of the first extending portion (32) close to the riveting portion (21) and an outer side surface of the base portion (31) is a right angle or an obtuse angle.

5. The battery of claim 2, wherein, A distance between an outer end surface of the pole (20) and an outer end surface of the base portion (31) is 0.8-2.0 mm.

6. The battery of claim 2, wherein, An extending width of the riveting portion (21) in the first direction is 0.3-2.5 mm.

7. The battery of claim 1, wherein, The riveting portion (21) comprises a flange (22) disposed at an edge of the riveting portion (21) in the first direction, and the flange (22) abuts against an outer end of the first extending portion (32) in the second direction.

8. The battery of claim 7, wherein, A hard sheet (40) surrounding the pole (20) is disposed between the base portion (31) and the riveting portion (21).

9. The battery of claim 8, wherein, A thickness of the hard sheet (40) in the second direction is 0.1-0.8 mm.

10. The battery of claim 8, wherein, A material hardness of the hard sheet (40) is greater than a surface hardness of the pole (20).

11. The battery of claim 8, wherein, An extending distance of the riveting portion (21) in the first direction exceeds the hard sheet (40), and a distance between an edge of the riveting portion (21) and the hard sheet (40) in the first direction is 0.05-0.5 mm.

12. The battery of claim 8, wherein, A difference between a material hardness value of the hard sheet (40) and a surface hardness value of the pole (20) is at least greater than 5 HV.

13. The battery of claim 8, wherein, A distance between an edge of the hard sheet (40) close to the pole (20) and the pole (20) in the first direction is 0-0.4 mm.

14. The battery of claim 8, wherein, A region of the base portion (31) corresponding to the hard sheet (40) is recessed, and a recess depth is greater than 0.03 mm.

15. The battery of claim 7, wherein, A thickness of the flange (22) in the second direction is greater than or equal to 0.02 mm.

16. The battery of claim 7, wherein, A width of the flange (22) in the first direction is 0.05-0.4 mm.

17. An electronic device, comprising: The battery comprises the battery as claimed in any one of claims 1-16.

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