Battery and electronic equipment

Abstract

The utility model relates to the technical field of battery safety, and provides a battery and an electronic device, the battery comprises a shell, a pole, a naked battery cell and an adapter piece, the pole is arranged on the end wall of the first end of the shell, the naked battery cell is arranged in the shell, the naked battery cell is electrically connected with the pole through the adapter piece, and the shell is provided with a second end. At least part of the area of the adapter piece is used as a wall surface to define a first area with the shell, the internal space of the shell outside the first area forms a second area, one end of the pole is located in the first area, the naked battery cell is located in the second area, and the wall surface forming the first area prevents gas in the second area from entering the first area. According to the utility model, the independent first area (the cavity in which the pole is positioned) is defined by the adapter plate serving as a part of the wall surface and the shell, so that high-pressure airflow generated by thermal runaway is effectively blocked in the second area (the main space in which the naked battery cell is positioned), and the risk that the airflow directly impacts the pole sealing structure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery safety technology, and in particular to a battery and electronic device. Background Technology

[0002] In a battery, the positive electrode adapter plate is a key conductive component that plays an important role in connecting the internal tab (JR positive electrode) of the cell to the positive terminal.

[0003] However, when the battery generates high-pressure gas due to abnormal operating conditions such as thermal runaway, the high-temperature gas flow may rapidly accumulate through the gap between the positive electrode adapter and the casing and impact the terminal (usually made of aluminum). The high-temperature gas flow may cause the terminal to be impacted and fly off, resulting in the thermal runaway gas from the battery leaking in an uncontrollable direction, posing a certain safety hazard. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to propose a battery and electronic device to improve battery safety.

[0005] To achieve the above and other related objectives, this utility model provides a battery, comprising:

[0006] case;

[0007] A pole post is disposed on the end wall of the first end of the housing;

[0008] The bare battery cell and the adapter plate are provided. The bare battery cell is disposed inside the housing and is electrically connected to the terminal through the adapter plate.

[0009] In this configuration, at least a portion of the adapter plate forms a wall that, together with the housing, constitutes a first region. The internal space of the housing outside the first region constitutes a second region. One end of the electrode post is located within the first region, and the bare battery cell is located within the second region. The wall forming the first region prevents gas from the second region from entering the first region.

[0010] In an optional embodiment of this utility model, the wall surface constituting the first region includes an annular sealing portion, which contacts the end wall and the adapter piece respectively, and the annular sealing portion surrounds the pole post.

[0011] In an optional embodiment of the present invention, the wall surface constituting the first region includes an adhesive coating covering the edge of the adapter piece, the adhesive coating being fitted and sealed to the end wall or the housing.

[0012] In an optional embodiment of this utility model, the end wall includes a lower plastic disposed near the bare cell side, the edge of the lower plastic having a gap between the lower plastic and the housing in the planar direction, and the edge of the adapter piece being bent so that the overmolding is embedded in the gap.

[0013] In an optional embodiment of this utility model, the end wall includes a lower plastic material disposed near the bare battery cell, and the wall surface constituting the first region includes an annular protrusion on the lower plastic material. The annular protrusion is attached to the adapter piece and surrounds the electrode post.

[0014] In an optional embodiment of this utility model, the annular protrusion and the lower plastic are integrally injection molded structures.

[0015] In an optional embodiment of this utility model, the wall surface constituting the first region includes an annular rib on the adapter piece, the annular rib contacting the end wall and surrounding the pole post.

[0016] In an optional embodiment of this utility model, the annular rib is a stamped rib structure on the adapter piece.

[0017] In an optional embodiment of this utility model, the end wall includes a lower plastic material disposed near the bare cell side, and an annular groove is disposed on the lower plastic material near the bare cell side. The edge of the adapter piece is embedded in the annular groove to form the first region together with the lower plastic material, and the annular groove surrounds the electrode post.

[0018] In an optional embodiment of this utility model, the adapter piece has a non-perforated structure.

[0019] This invention also proposes an electronic device, including the aforementioned battery.

[0020] The technical advantages of this invention are as follows: This invention uses an adapter plate as part of the wall surface to enclose and form an independent first region (the cavity where the electrode post is located) with the shell. This effectively blocks the high-pressure airflow generated by thermal runaway within the second region (the main space where the bare cell is located), avoiding the risk of airflow directly impacting the electrode post sealing structure. This structure forces the gas to be released directionally through a pre-set pressure relief valve (as shown in the standard pressure relief channel at the lower end), overcoming the problem of disordered release in traditional designs and significantly reducing the risk of the electrode post detaching due to airflow impact. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the battery structure in Embodiment 1 of this utility model;

[0023] Figure 2 for Figure 1 Enlarged view of part B;

[0024] Figure 3 This is a schematic diagram of the adapter plate in Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram showing the position of the annular sealing part in Embodiment 1 of this utility model;

[0026] Figure 5 This is a schematic diagram of the battery structure in Embodiment 2 of this utility model;

[0027] Figure 6 for Figure 5 Enlarged view of part A;

[0028] Figure 7 This is a schematic diagram of the battery casing structure in Embodiment 2 of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the adapter piece in Embodiment 2 of this utility model;

[0030] Figure 9 This is a schematic diagram showing the position of the adhesive coating in Embodiment 2 of this utility model;

[0031] Figure 10 This is a schematic diagram of the battery structure in Embodiment 3 of this utility model;

[0032] Figure 11 for Figure 10 Enlarged view of part C;

[0033] Figure 12 This is a schematic diagram of the battery casing structure in Embodiment 3 of this utility model;

[0034] Figure 13 This is a schematic diagram of the adapter plate in Embodiment 4 of this utility model.

[0035] Explanation of reference numerals in the attached drawings: 10, housing; 11, first region; 12, second region; 20, end wall; 21, lower plastic; 211, annular protrusion; 30, pole post; 40, adapter plate; 41, rubber coating; 42, annular rib; 50, bare battery cell; 60, annular sealing part. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] In battery design, especially cylindrical batteries, the positive electrode connector is a crucial conductive component. Its main function is to connect the internal tab (JR positive terminal) of the cell to the external positive terminal, enabling current transfer during battery charging and discharging. To ensure battery safety and performance, the design of the positive electrode connector needs to balance efficient current transfer with the insulation of the battery casing to prevent current leakage or short circuits. However, traditional designs often leave a large annular gap between the positive electrode connector and the battery casing to reduce the risk of short circuits from direct contact between the positive electrode connector and the casing.

[0039] While this design effectively reduces the possibility of direct contact between the positive electrode adapter and the casing, thus preventing short circuits, it also introduces new safety hazards. Especially when the battery encounters abnormal operating conditions, such as thermal runaway, a large amount of high-pressure gas may be generated inside the cell. This gas rapidly accumulates through the gap between the positive electrode adapter and the casing, potentially causing the terminal area to be impacted by a strong airflow. Because this gap lacks an effective buffer or flow-guiding structure, the violent impact of the airflow may cause the terminal seal to fail, or even cause the terminal to detach, leading to serious safety problems such as internal short circuits, fires, or explosions.

[0040] When batteries are used as power batteries in new energy vehicles, they typically employ a cylindrical design. The positive terminal is generally located at the top of the battery (facing the passenger compartment), while a pressure relief valve is located at the bottom. Therefore, in the event of abnormal conditions such as thermal runaway, the positive terminal area is often subjected to greater airflow impact. Without effective guidance or buffering structures, this airflow can easily lead to safety accidents. Current design solutions have not adequately addressed these potential safety hazards, especially under high-pressure airflow environments such as thermal runaway, where the stability and sealing of the terminal often become crucial factors determining battery safety.

[0041] Therefore, optimizing the gap design between the positive electrode adapter and the battery casing while ensuring the functionality of the adapter, and providing an effective buffer and current-guiding structure, has become a significant technical challenge in battery design. Solving this problem is crucial for improving battery safety, stability, and resistance to thermal runaway.

[0042] To achieve the above objectives and other related objectives, such as Figure 1-13 As shown, this utility model proposes a battery, including a casing 10, terminals 30, bare cells 50, and adapter plates 40.

[0043] The pole post 30 is disposed on the end wall 20 at the first end of the housing 10.

[0044] The bare battery cell 50 is disposed inside the housing 10, and the bare battery cell 50 is electrically connected to the terminal 30 through the adapter piece 40.

[0045] At least a portion of the adapter plate 40 serves as a wall surface, which together with the housing 10 forms a first region 11. The adapter plate 40 simultaneously performs the dual functions of conductive connection (electrical conduction between the bare cell 50 and the terminal 30) and structural isolation (separation between the first region 11 and the second region 12). Its geometry, in conjunction with the housing 10, forms a physical barrier.

[0046] The internal space of the housing 10 outside the first region 11 constitutes the second region 12. One end of the electrode post 30 is located in the first region 11, and the bare cell 50 is located in the second region 12. The wall of the first region 11 prevents gas in the second region 12 from entering the first region 11.

[0047] In this way, the adapter piece 40 does not need to increase the insulation gap by reducing the diameter. While maintaining a sufficient conductive cross-sectional area, it can achieve physical insulation between the positive electrode and the shell (negative electrode) through the cavity isolation design, avoiding the easy aging problem of traditional adhesive bonding process.

[0048] When the bare cell 50 generates high-pressure gas due to thermal runaway in the second region 12, the isolation wall of the adapter plate 40 directly blocks the gas from diffusing into the first region 11 (terminal area), forcing the gas to be released directionally through a preset pressure relief channel (such as a pressure relief valve at the bottom of the housing), thus avoiding the airflow directly impacting the terminal sealing structure.

[0049] Example 1, as Figure 1-4 As shown, the wall surface constituting the first region 11 includes an annular sealing portion 60. The annular sealing portion 60 contacts both the end wall 20 and the adapter piece 40, and surrounds the pole post 30. The annular sealing portion 60 is an independent component (such as a high-temperature resistant sealing ring), tightly clamped between the end wall 20 and the adapter piece 40, and arranged circumferentially around the pole post 30 to form a closed annular sealing interface. The contact surfaces of the annular sealing portion 60 with the adapter piece 40 and the end wall 20 are fixed by mechanical pressing or thermal fusion to ensure airtight isolation between the first region 11 and the second region 12. As an independent physical barrier, the annular sealing portion 60 can effectively prevent high-pressure, high-temperature gas in the second region 12 from intruding into the first region 11. Especially under thermal runaway conditions, its high-temperature resistance ensures sealing reliability under extreme conditions. The design of the annular sealing part 60 surrounding the pole post 30 prevents the airflow from directly impacting the root of the pole post (the weak sealing area), thus avoiding deformation or detachment of the pole post 30 due to a sudden increase in local pressure.

[0050] Example 2, as Figure 5-9 As shown, the wall surface constituting the first region 11 includes an adhesive coating 41 covering the edge of the adapter piece 40. The adhesive coating 41 (high-temperature resistant insulating material) is formed on the edge of the adapter piece 40 through injection molding or coating processes, and the adhesive coating 41 completely covers the edge area of ​​the adapter piece 40. The adhesive coating 41 is bonded and sealed to the end wall 20 or the housing 10. The adhesive coating 41 is bonded to the inner wall of the end wall 20 or the housing 10 to form a sealing interface. The thickness and elastic modulus of the adhesive coating 41 are dynamically adapted according to the gap between the housing 10 and the adapter piece 40 to ensure deformation compensation after the bonding surface is compressed, thereby achieving an airtight seal. The adhesive coating 41 simultaneously performs the functions of airtight isolation and positive electrode-housing insulation, avoiding the multi-layer stacking design of independent sealing rings and insulating sheets, and reducing the risk of interface failure.

[0051] In an optional embodiment of this utility model, the end wall 20 includes a lower plastic 21 disposed near the bare battery cell 50. The edge of the lower plastic 21 has a gap between itself and the housing 10 in the planar direction. This gap provides space for the overlay 41 to be embedded for sealing, and also limits the displacement of the adapter piece 40 through geometric constraints, preventing the adapter piece from shifting due to assembly or vibration. The edge of the adapter piece 40 is bent to allow the overlay 41 to be embedded in the gap. The edge of the adapter piece 40 is formed into a bent structure through stamping or bending processes. The bent edge subjectes the overlay 41 to both radial compression (gap sidewall) and axial pressure (end wall 20) forces, forming a three-dimensional sealing network to prevent high-pressure gas from penetrating from different directions.

[0052] Example 3, as Figure 10-12 As shown, the end wall 20 includes a lower plastic 21 disposed near the bare cell 50. The lower plastic 21 is made of an insulating and electrolyte-resistant material (such as PPS or LCP). The wall surface constituting the first region 11 includes an annular protrusion 211 on the lower plastic 21. The annular protrusion 211 is attached to the adapter piece 40. The adapter piece 40 is attached to the top plane of the annular protrusion 211 by mechanical pressing or hot riveting process to form a continuous sealing line. The height of the annular protrusion 211 matches the assembly position of the adapter piece 40 to ensure elastic deformation compensation tolerance after pressing. The annular protrusion 211 surrounds the electrode post 30. The design of the annular protrusion 211 surrounding the electrode post 30 prevents gas in the second region 12 from permeating into the first region 11 along the side wall of the electrode post 30, avoiding degradation of the connection performance between the electrode post 30 and the housing 10.

[0053] In an optional embodiment of this utility model, the annular protrusion 211 and the lower plastic 21 are integrally injection molded structures. The annular protrusion 211 and the lower plastic 21 are formed simultaneously in the injection mold, without the need for secondary processing or assembly. The injection molding process can precisely control the wall thickness, height, and roundness of the annular protrusion 211, adapting to the layout of poles 30 and adapter pieces 40 with different diameters. The integral design eliminates the assembly gap between the traditional sealing ring or overlay layer and the substrate, avoiding the risk of multi-interface leakage and improving airtightness stability. Integral injection molding reduces the independent processing and assembly steps of the sealing components, improving production efficiency.

[0054] Example 4, as Figure 13As shown, the wall surface constituting the first region 11 includes annular ribs 42 on the adapter plate 40. The annular ribs 42 contact the end wall 20 and surround the electrode post 30. The annular ribs 42 of the adapter plate 40 directly perform a sealing function while maintaining current transmission between the bare cell 50 and the electrode post 30, eliminating the need for additional independent sealing components and reducing the number of components and assembly complexity. The annular ribs 42 are arranged around the electrode post 30, with a certain gap maintained between their inner side and the root of the electrode post 30 to avoid interference with the assembly or welding of the electrode post 30. The outer side of the annular ribs 42 contacts the end wall 20, forming multiple sealing lines around the electrode post 30.

[0055] In an optional embodiment of this utility model, the annular rib 42 is a stamped rib structure on the adapter piece 40. The height and width of the annular rib 42 are precisely controlled by the stamping die to ensure that a continuous and closed compression sealing surface is formed with the contact surface with the end wall 20. The stamping process ensures the circumferential uniformity of the annular rib 42, avoiding the uneven thickness problem that may occur in traditional injection molding or overmolding processes, and improving the airtightness of the sealing interface. The stamped annular rib 42 has micro-elasticity and deforms when pressed with the end wall 20. The deformation amount is adaptively adjusted according to the flatness of the end wall 20. The cross-sectional shape of the annular rib 42 (such as trapezoidal or semi-circular) is optimized to enhance the rebound force and contact area after being compressed.

[0056] In embodiment five, the end wall 20 includes a lower plastic 21 disposed near the bare cell 50. The lower plastic 21 has an annular groove on the side near the bare cell 50, the depth and width of which are adapted to the edge of the adapter piece 40. The edge of the adapter piece 40 is embedded in the annular groove to form the first region 11 with the lower plastic 21, and the annular groove surrounds the electrode post 30. The edge of the adapter piece 40 can be formed into an annular flange by stamping or bending, which is then inserted into the annular groove of the lower plastic 21 to form a mechanical interlock. The design of the flange embedded in the groove restricts the displacement of the adapter piece 40 under vibration or impact, preventing airtightness failure of the sealing interface due to component misalignment. The annular flange of the adapter piece 40 and the annular groove of the lower plastic 21 are clearance-fitted, with the flange width slightly smaller than the groove width, allowing for adaptive position adjustment during assembly. After the flange is inserted into the groove, it is fixed by the clamping force of the end wall 20 or by a hot riveting process, ensuring a tight fit between the flange and the groove wall.

[0057] In an optional embodiment of this utility model, the adapter piece 40 has a non-perforated structure. The adapter piece 40 is a complete metal sheet (such as aluminum or copper) with no punches, slots, or perforations on its surface. Its overall shape matches the tab welding area of ​​the bare cell 50 and the connection surface of the terminal post 30. The non-perforated design of the adapter piece 40 prevents high-temperature, high-pressure airflow from thermal runaway from entering the first region 11 through holes.

[0058] This invention also proposes an electronic device, including the aforementioned battery.

[0059] In summary, this invention forms a first region 11 (terminal area) and a second region 12 (cell area) by the adapter plate 40 and the housing 10 enclosing each other. High-pressure gas is confined within the second region 12, preventing direct impact on the terminal 30. This forces the gas to be released in an orderly manner through a pre-set bottom pressure relief valve, preventing disordered airflow from causing the terminal to detach or the seal to fail, significantly reducing the risk of explosion. Various embodiments (such as the annular sealing part 60, the rubber coating 41, the annular protrusion 211, and the annular rib 42) integrate conductivity and sealing functions into the adapter plate 40 or the lower plastic 21, reducing reliance on traditional adhesive / plastic layers and avoiding failures caused by aging or thermal expansion. The elastic design (such as the deformation of the rubber coating 41 and the elastic pressing of the annular rib 42) adapts to assembly tolerances and thermal expansion, maintaining airtightness over the long term.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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”.

[0066] 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.

[0067] 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.

[0068] 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); a pole column (30) arranged at an end wall (20) of a first end of the shell (10); a bare electric core (50) arranged inside the shell (10) and an adapter plate (40) electrically connected to the pole column (30) through the bare electric core (50); wherein the adapter plate (40) at least partially forms a wall surface to enclose the shell (10) to form a first area (11), and an internal space of the shell (10) outside the first area (11) forms a second area (12), one end of the pole column (30) is located in the first area (11), and the bare electric core (50) is located in the second area (12), and the wall surface forming the first area (11) prevents gas in the second area (12) from entering the first area (11).

2. The battery of claim 1, wherein, The wall surface forming the first area (11) comprises a ring-shaped sealing portion (60) in contact with the end wall (20) and the adapter plate (40), and the ring-shaped sealing portion (60) surrounds the pole column (30).

3. The battery of claim 1, wherein, The wall surface forming the first area (11) comprises a rubber coating (41) wrapped around the edge of the adapter plate (40), and the rubber coating (41) is sealed with the end wall (20) or the shell (10).

4. The battery of claim 3, wherein, The end wall (20) comprises a lower plastic (21) arranged near the bare electric core (50), and the edge of the lower plastic (21) has a gap in the plane direction of the lower plastic (21) with the shell (10), and the edge of the adapter plate (40) is bent to embed the rubber coating (41) in the gap.

5. The battery of claim 1, wherein, The end wall (20) comprises a lower plastic (21) arranged near the bare electric core (50), and the wall surface forming the first area (11) comprises a ring-shaped protrusion (211) on the lower plastic (21), the ring-shaped protrusion (211) is in contact with the adapter plate (40), and the ring-shaped protrusion (211) surrounds the pole column (30).

6. The battery of claim 5, wherein, The ring-shaped protrusion (211) and the lower plastic (21) are of an integral injection molding structure.

7. The battery of claim 1, wherein, The wall surface forming the first area (11) comprises a ring-shaped protruding rib (42) on the adapter plate (40), the ring-shaped protruding rib (42) is in contact with the end wall (20), and the ring-shaped protruding rib (42) surrounds the pole column (30).

8. The battery of claim 7, wherein, The ring-shaped protruding rib (42) is a stamping rib structure on the adapter plate (40).

9. The battery of claim 1, wherein, The end wall (20) comprises a lower plastic (21) arranged near the bare electric core (50), and the lower plastic (21) is provided with a ring-shaped groove near the bare electric core (50), and the edge of the adapter plate (40) is embedded in the ring-shaped groove to enclose the first area (11) with the lower plastic (21), and the ring-shaped groove surrounds the pole column (30).

10. The battery of claim 1, wherein, The adapter plate (40) is of a non-hollow structure.

11. An electronic device, comprising: The battery comprises any one of the batteries according to claims 1 to 10.

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