Battery and bluetooth device

Abstract

The utility model discloses a kind of battery and bluetooth device, wherein battery includes shell, electric core and insulation structure.The shell has accommodating cavity and the mounting hole being communicated with accommodating cavity;Electric core includes electric core main body and first tab, and electric core main body includes the first pole piece and the second pole piece woundly arranged, first tab is connected to first pole piece and extends to the outside of accommodating cavity via mounting hole along first direction, and first tab includes connecting portion, and connecting portion is located at the outside of accommodating cavity, for being connected with external circuit;Insulation structure is used to make first tab and shell insulation arrangement.Therefore, when the battery of the present embodiment is installed on bluetooth device, the extension direction of first tab can be directly observed to adjust the angle of external circuit, without the need to refer to the identification outside the shell, thereby eliminating the position error of first tab due to the installation error of electric core and top cover, thereby enhancing the elimination effect of external circuit on current noise.

Description

Technical Field

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

[0002] As people's living standards improve, more and more wireless products are being widely used due to their comfort and convenience. For Bluetooth devices to operate and function wirelessly, a battery is an essential component. For example, widely used wireless headphones contain rechargeable batteries. However, because the negative electrode is longer than the positive electrode, the different current directions at the positive and negative electrodes cause induced electromagnetic fields that cannot be completely canceled out, resulting in noise in the Bluetooth device. To address this issue and achieve noise suppression in Bluetooth headphones, providing clearer and richer sound quality, headphone manufacturers need to precisely locate the positive electrode tab of the battery and, when using the battery in a Bluetooth device, incorporate corresponding external circuitry to suppress current noise generated during battery discharge.

[0003] To address this, some technologies incorporate a positioning section on the outer surface of the top cover. This positioning section serves as a reference to mark the extension direction of the tabs. When the battery is installed in a Bluetooth device, the extended circuitry can be adjusted according to the tab extension direction to eliminate or suppress current noise during battery use, achieving better noise reduction. However, during battery assembly, factors such as cell and top cover installation errors can cause a deviation between the tab extension direction and the positioning section after installation, resulting in a decrease in the noise reduction effect of the Bluetooth device. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery that can be used in Bluetooth devices to achieve better noise reduction performance.

[0005] This invention also provides a Bluetooth device that includes the aforementioned battery.

[0006] A battery according to a first aspect of the present invention includes: a casing, a cell, and an insulation structure.

[0007] The outer casing has a receiving cavity and a mounting hole communicating with the receiving cavity; the battery cell includes a battery cell body and a first electrode tab, the battery cell body includes a first electrode and a second electrode wrapped together, the length of the first electrode is less than the length of the second electrode, the first electrode tab is connected to the first electrode and extends along a first direction through the mounting hole to the outside of the receiving cavity, the first electrode tab includes a connecting portion, the connecting portion is located outside the receiving cavity, and is used to connect with an epitaxial circuit; the insulating structure is used to insulate the first electrode tab from the outer casing.

[0008] The battery according to the embodiments of the present invention has at least the following beneficial effects:

[0009] In this embodiment, the first tab extends along a first direction through a mounting hole to the outside of the housing, so that the connection portion of the first tab is located outside the receiving cavity. Therefore, when the battery of this embodiment is installed on the Bluetooth device, the extension direction of the first tab can be directly observed to adjust the epitaxial circuit, without needing to indirectly identify the extension direction of the first tab by referring to markings on the outside of the housing as in the prior art. Therefore, compared with the prior art, the solution of this embodiment can eliminate the positional error of the first tab caused by the installation error of the battery cell and the top cover, thereby enabling more precise adjustment of the epitaxial circuit to enhance the effect of the epitaxial circuit in eliminating current noise, and enabling the Bluetooth device to achieve a better noise reduction effect.

[0010] According to some embodiments of the present invention, the first electrode ear includes a first electrode ear portion, a second electrode ear portion, and a third electrode ear portion connected in sequence. The first electrode ear portion and the third electrode ear portion both extend along the first direction. The first electrode ear portion is located inside the receiving cavity, and the third electrode ear portion is located outside the receiving cavity. The second electrode ear portion passes through the mounting hole, and one end of the second electrode ear portion is connected to the first electrode ear portion, and the other end is connected to the third electrode ear portion.

[0011] Wherein, the angle between the first pole ear and the second pole ear is α, the angle between the second pole ear and the third pole ear is β, 90°<α<180°, 90°<β<180°.

[0012] According to some embodiments of the present invention, the housing includes a set sidewall having a first surface facing the receiving cavity and a second surface facing away from the receiving cavity, and the mounting hole communicating between the first surface and the second surface;

[0013] The insulating structure includes a first insulating part, a second insulating part, and a third insulating part. The first insulating part is used to insulate the first electrode tab from the first surface. The second insulating part is used to insulate the second electrode tab from the wall of the mounting hole. The third insulating part is used to insulate the third electrode tab from the second surface.

[0014] According to some embodiments of the present invention, the inner wall of the outer shell also has an insulating coating, the insulating coating including the first insulating portion.

[0015] According to some embodiments of the present invention, the second insulating part and the third insulating part are connected to form an integral flexible insulating member.

[0016] According to some embodiments of the present invention, the battery further includes a sealing member connected to the second surface and covering the mounting hole, the third electrode ear extending from between the sealing member and the second surface, the minimum distance between the edge of the sealing member and the edge of the mounting hole being L, and the thickness of the set sidewall being H, where L > H.

[0017] According to some embodiments of the present invention, the sealing element includes a metal foil layer and a molten adhesive layer, wherein the metal foil layer is connected to the molten adhesive layer, and the molten adhesive layer is thermally bonded to the second surface.

[0018] According to some embodiments of the present invention, the third insulating part is sleeved on the outside of the third electrode ear, and the third insulating part and the molten adhesive layer are fused into an integral structure.

[0019] According to some embodiments of the present invention, the third insulating part is made of the same material as the molten adhesive layer.

[0020] A Bluetooth device according to a second aspect of the present invention includes the battery described in the first aspect embodiment.

[0021] The Bluetooth device according to the embodiments of the present invention has at least the following beneficial effects:

[0022] The battery of the first aspect embodiment is used so that the Bluetooth device of this embodiment has a better noise reduction effect.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of the first type of battery according to the first aspect of this utility model;

[0026] Figure 2 for Figure 1 Exploded view;

[0027] Figure 3 for Figure 1 A sectional view;

[0028] Figure 4 for Figure 1 A magnified view of area A in the middle;

[0029] Figure 5 for Figure 4 A schematic diagram of the first electrode ear;

[0030] Figure 6 This is a partial enlarged view of the second type of battery according to the first aspect embodiment of this utility model;

[0031] Figure 7 This is a partial enlarged view of the third type of battery according to the first aspect of this utility model.

[0032] Figure label:

[0033] The outer shell 100, the receiving cavity 110, the mounting hole 120, the setting side wall 130, the first surface 131, and the second surface 132;

[0034] Battery cell 200, battery cell body 210, first electrode 211, second electrode 212, first electrode tab 220, connecting part 221, first electrode tab 222, second electrode tab 223, third electrode tab 224;

[0035] Insulating component 300, second insulating part 310, third insulating part 320;

[0036] The sealing element is 400, the metal foil layer is 410, the molten adhesive layer is 420, and the insulating layer is 430. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0041] As people's living standards improve, more and more wireless products are being widely used due to their comfort and convenience. For Bluetooth devices to operate and function wirelessly, a battery is an essential component. For example, widely used wireless headphones contain rechargeable batteries. However, because the negative electrode is longer than the positive electrode, the different current directions at the positive and negative electrodes cause induced electromagnetic fields that cannot be completely canceled out, resulting in noise in the Bluetooth device. To address this issue and achieve noise suppression in Bluetooth headphones, providing clearer and richer sound quality, headphone manufacturers need to precisely locate the positive electrode tab of the battery and, when using the battery in a Bluetooth device, incorporate corresponding external circuitry to suppress current noise generated during battery discharge.

[0042] To address this, some technologies incorporate a positioning section on the outer surface of the top cover. This positioning section serves as a reference to mark the extension direction of the tabs. When the battery is installed in a Bluetooth device, the extended circuitry can be adjusted according to the tab extension direction to eliminate or suppress current noise during battery use, achieving better noise reduction. However, during battery assembly, factors such as cell and top cover installation errors can cause a deviation between the tab extension direction and the positioning section after installation, resulting in a decrease in the noise reduction effect of the Bluetooth device.

[0043] In view of the above background, the first aspect of this utility model provides a battery that can be used in Bluetooth devices to enable the Bluetooth devices to achieve better noise reduction performance. (See also...) Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the first type of battery according to the first aspect of this utility model. Figure 2 for Figure 1 Explosion diagram, Figure 3 for Figure 1 The cross-sectional view shows that the battery in this embodiment includes: a casing 100, a cell 200, and an insulation structure.

[0044] The outer casing 100 is, for example, a circular or square structure, and has a receiving cavity 110 and a mounting hole 120 communicating with the receiving cavity 110. Taking a button cell as an example, the mounting hole 120 is provided, for example, in the top cover, bottom cover, or side wall of the button cell. The cell 200 includes a cell body 210 and a first tab 220 (e.g., ...). Figure 3As shown, the battery cell body 210 includes a first electrode 211 and a second electrode 212 wound together. The length of the first electrode 211 is shorter than the length of the second electrode 212. The first electrode 211 is, for example, a cathode, and the second electrode 212 is, for example, an anode. The second electrode 212 is, for example, directly electrically connected to the inner wall of the housing 100. Alternatively, the battery cell 200 also includes a second tab connected to the second electrode 212 and the inner wall of the housing 100. The first tab 220 is connected to the first electrode 211 and extends along a first direction through the mounting hole 120 to the outside of the receiving cavity 110. The first tab 220 includes a connecting portion 221 located outside the receiving cavity 110 for connection to an external circuit. An insulating structure is used to insulate the first tab 220 from the housing 100 to prevent short circuits in the battery.

[0045] Specifically, in this embodiment, the first tab 220 extends along a first direction through the mounting hole 120 to the outside of the housing 100, so that the connecting portion 221 of the first tab 220 is located outside the receiving cavity 110. For example, the housing 100 is a cylindrical structure, and the first direction is, for example, the radial direction of the housing 100, but it is not limited to this; it can also form a certain angle with the radial direction, as long as the first tab 220 extends along a specific direction and passes through the mounting hole 120. Therefore, when the battery of this embodiment is installed on a Bluetooth device, the extension direction of the first tab 220 can be directly observed to adjust the peripheral circuit of the Bluetooth device, without indirectly identifying the extension direction of the first tab 220 by referring to markings on the outside of the housing 100 as in the prior art. Therefore, compared with the prior art, the solution of this embodiment can eliminate the positional error of the first tab 220 caused by the installation error of the battery cell 200 and the top cover, thereby enabling more precise adjustment of the peripheral circuit to enhance the elimination effect of the peripheral circuit on current noise, and enabling the Bluetooth device to achieve better noise reduction.

[0046] Reference Figures 3 to 5 , Figure 4 for Figure 1 A magnified view of area A in the middle. Figure 5 for Figure 4A schematic diagram of the first electrode ear is shown. In some embodiments, the first electrode ear 220 includes a first electrode ear portion 222, a second electrode ear portion 223, and a third electrode ear portion 224 connected in sequence. Both the first electrode ear portion 222 and the third electrode ear portion 224 extend along a first direction. The first electrode ear portion 222 is located inside the receiving cavity 110, and the third electrode ear portion 224 is located outside the receiving cavity 110. The second electrode ear portion 223 passes through the mounting hole 120, with one end connected to the first electrode ear portion 222 and the other end connected to the third electrode ear portion 224. The angle between the first electrode ear portion 222 and the second electrode ear portion 223 is α, and the angle between the second electrode ear portion 223 and the third electrode ear portion 224 is β, where 90° < α < 180° and 90° < β < 180° (e.g., ...). Figure 5 (As shown). For example, the angle between the first tab 222 and the second tab 223 is 120°, 135°, or 160°, thereby reducing the bending degree of the first tab 220. On the one hand, this can prevent the first tab 220 from breaking due to excessive bending, thus improving battery life. On the other hand, the angle of the first tab 220 is gentler, resulting in smaller impedance changes, thereby reducing edge field radiation generated at the bend and reducing electromagnetic interference to Bluetooth devices. In addition, the optimized design of the bending angle can also effectively reduce current loss during transmission, further improving battery energy utilization and ensuring that Bluetooth devices maintain stable performance during long-term use.

[0047] Reference Figure 3 and Figure 4 Based on the above embodiments, in some embodiments, the outer casing 100 includes a set sidewall 130, which has a first surface 131 facing the receiving cavity 110 and a second surface 132 facing away from the receiving cavity 110, as well as a mounting hole 120 communicating with the first surface 131 and the second surface 132. The insulating structure includes a first insulating portion, a second insulating portion 310, and a third insulating portion 320. The first insulating portion is used to insulate the first electrode tab 222 from the first surface 131, the second insulating portion 310 is used to insulate the second electrode tab 223 from the wall of the mounting hole 120, and the third insulating portion 320 is used to insulate the third electrode tab 224 from the second surface 132, thereby improving the insulation between the first electrode tab 220 and the outer casing 100 and thus improving the safety of the battery in this embodiment.

[0048] In some embodiments, the inner wall of the housing 100 further comprises an insulating coating, which includes a first insulating portion. Specifically, it is understood that the insulating coating can be made thinner through a specific coating process, ranging from 10 μm to 150 μm. For example, high-temperature insulating coatings can achieve a thickness of less than 10 μm, thereby reducing the coating's footprint while maintaining insulation performance, thus improving the battery's energy density. Furthermore, the application of the insulating coating effectively prevents current leakage, ensuring stable operation of the Bluetooth device in complex environments and extending the device's lifespan.

[0049] Reference Figure 4 In some embodiments, the second insulating portion 310 and the third insulating portion 320 are connected to form an integral flexible insulating member 300. The insulating member 300 is a flexible structure made of one or more materials such as polyimide (PI), polyester (PET), or polypropylene (PP). The insulating member 300 is, for example, sleeved on the second tab 223 and the third tab 224. Because the insulating member 300 is a flexible structure, during the installation process, the insulating member 300 can be sleeved on the first tab 220 before the cell 200 is installed into the receiving cavity 110, and deforms as the first tab 220 bends when it passes through the mounting hole 120, making the battery assembly of this embodiment simpler. Furthermore, since the third insulating portion 320 and the second insulating portion 310 are integrally structured, the continuity of the insulating structure of the insulating member 300 at the bend between the second tab 223 and the third tab 224 can be ensured. This guarantees the insulation between the first tab 220 at the bend between the second tab 223 and the third tab 224 and the outer casing 100, thereby improving battery safety. Moreover, the flexibility of the insulating member 300 allows the battery to better absorb energy when subjected to external impacts, reducing damage to the internal structure and further improving the overall durability and reliability of the battery.

[0050] Understandably, in conventional technology, sealing of holes typically involves filling the hole with sealing material. However, this sealing is limited by the hole's depth, specifically the thickness of the sidewall 130 in this embodiment. If sealing material is directly filled into the mounting hole 120 to form the seal 400, the effective sealing width between the first tab 220 and the outer casing 100 is equal to the thickness of the outer casing 100. However, to improve energy density, the outer casing 100 is made as thin as possible while still meeting strength requirements. Therefore, directly filling the mounting hole 120 with sealing material results in a smaller effective sealing width between the first tab 220 and the outer casing 100. Based on this, to enhance the sealing effect between the first tab 220 and the outer casing 100, in some embodiments, the battery further includes a seal 400 connected to the second surface 132 and covering the mounting hole 120 (e.g., ...). Figure 1As shown, the third tab 224 extends between the sealing member 400 and the second surface 132. The minimum distance between the edge of the sealing member 400 and the edge of the mounting hole 120 is L, and the thickness of the sidewall 130 is set to H, where L > H. Therefore, with the same thickness of the outer shell 100, the sealing width between the first tab 220 and the outer shell 100 in this embodiment can be larger. That is, in this embodiment, under the premise of higher energy density, the overall sealing performance of the battery can be effectively improved, further ensuring the stability and safety of the battery in extreme environments.

[0051] It is understood that the third electrode ear 224 is disposed on the second surface 132, which forms a protrusion. The third electrode ear 224 is sandwiched between the second surface 132 and the sealing member 400. To ensure a tight seal at the location of the third electrode ear 224, the sealing member 400 needs to have a groove at the third electrode ear 224 that conforms to the shape of the third electrode ear 224. Based on this, referring to... Figure 6 , Figure 6 This is a partially enlarged view of a second type of battery according to a first aspect embodiment of the present invention. In this embodiment, the sealing element 400 includes a metal foil layer 410 and a molten adhesive layer 420. The metal foil layer 410 is connected to the molten adhesive layer 420, and the molten adhesive layer 420 is thermally bonded to the second surface 132. The metal foil layer 410 is, for example, aluminum foil or steel foil, and the molten adhesive layer 420 is, for example, polypropylene (PP), modified polypropylene (MPP), copolymer polypropylene (Co-PP), or a high-temperature adhesive resin layer. The molten adhesive layer 420 is thermally bonded to the second surface 132 to form a seal between the sealing element 400 and the second surface 132. It is understood that the thermal bonding process requires hot pressing of the sealing element 400. During the heating and melting process, the molten adhesive layer 420 can automatically form a groove that conforms to the shape of the third electrode ear 224, so that the molten adhesive layer 420 fully fills the space between the metal foil layer 410 and the second surface 132, thereby improving the sealing performance of the battery in this embodiment. Furthermore, no additional processing is required to form a groove that conforms to the shape of the third electrode ear 224, thus simplifying the battery manufacturing process and reducing manufacturing costs in this embodiment. In addition, the seal 400 is bonded to the second surface 132 via the molten adhesive layer 420. When the cell temperature reaches 135°C to 150°C, the molten adhesive layer 420 softens due to heat, reducing the bond strength between the seal 400 and the second surface 132. High-temperature gas can then force open the seal 400, allowing the battery to release pressure from the mounting hole 120, preventing heat accumulation inside the battery and improving the safety of the battery in this embodiment.

[0052] Furthermore, based on the above embodiments, the thermal bonding width between the seal 400 and the second surface 132 is not less than 8 mm. The thermal bonding width is defined as the distance between the two edges of the thermal bonding area in the direction from the outer edge to the inside of the seal 400, so as to ensure the connection strength and sealing performance between the seal 400 and the second surface 132, and improve the reliability of the battery in this embodiment.

[0053] Reference Figure 7 , Figure 7 This is a partially enlarged view of the third type of battery according to the first aspect of this utility model. Based on the above embodiment, the sealing element 400 is an aluminum-plastic film or a steel-plastic film. That is, the sealing element 400 also includes an insulating layer 430, which is, for example, a nylon layer, and the insulating layer 430 is adhered to the metal foil layer 410. Specifically, in this embodiment, the sealing element 400 is formed by cutting and processing commercially available aluminum-plastic film and steel-plastic film, thereby reducing processing costs.

[0054] Based on the above embodiments, the third insulating part 320 is sleeved on the outside of the third electrode lug 224, and the third insulating part 320 and the molten adhesive layer 420 are fused into an integral structure, thereby further improving the sealing performance at the third electrode lug 224. Furthermore, the third insulating part 320 and the molten adhesive layer 420 are made of the same material, for example, both the third insulating part 320 and the molten adhesive layer 420 are made of PP. Since the chemical composition and molecular structure of the same material are consistent, the diffusion and entanglement between molten molecules during hot melting are more efficient, forming a uniform connection without interface differences, thereby improving the sealing performance at the third electrode lug 224.

[0055] In some embodiments, the second surface 132 has a passivation layer, and the seal 400 is thermally bonded to the passivation layer. The second surface 132 is passivated, for example, by using a passivation liquid, such as a mixture of 5% nitric acid, 4% potassium dichromate, and water, to increase the adhesion strength between the second surface 132 and the molten adhesive layer 420, thereby improving the sealing performance of the battery in this embodiment.

[0056] According to a second aspect embodiment of the present invention, the Bluetooth device is, for example, a Bluetooth headset or a Bluetooth speaker, and includes the battery of the first aspect embodiment, thereby enabling the Bluetooth device to have a better noise reduction effect.

[0057] It should be noted that since this embodiment adopts all the technical features of the first aspect embodiment, this embodiment has all the beneficial effects brought by the first aspect embodiment, which will not be repeated here.

[0058] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, in the description of the present invention, the reference to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A battery, characterized in that, include: The housing has a receiving cavity and a mounting hole communicating with the receiving cavity; A battery cell includes a battery cell body and a first tab. The battery cell body includes a first electrode and a second electrode wound together. The length of the first electrode is less than the length of the second electrode. The first tab is connected to the first electrode and extends along a first direction through the mounting hole to the outside of the receiving cavity. The first tab includes a connecting portion located outside the receiving cavity for connecting to an epitaxial circuit. An insulating structure is provided to insulate the first electrode from the housing.

2. The battery according to claim 1, characterized in that, The first electrode ear includes a first electrode ear portion, a second electrode ear portion, and a third electrode ear portion connected in sequence. The first electrode ear portion and the third electrode ear portion both extend along the first direction. The first electrode ear portion is located inside the receiving cavity, and the third electrode ear portion is located outside the receiving cavity. The second electrode ear portion passes through the mounting hole, and one end of the second electrode ear portion is connected to the first electrode ear portion, and the other end is connected to the third electrode ear portion. Wherein, the angle between the first pole ear and the second pole ear is α, the angle between the second pole ear and the third pole ear is β, 90°<α<180°, 90°<β<180°.

3. The battery according to claim 2, characterized in that, The housing includes a set sidewall having a first surface facing the receiving cavity and a second surface facing away from the receiving cavity, and the mounting hole communicating between the first surface and the second surface; The insulating structure includes a first insulating part, a second insulating part, and a third insulating part. The first insulating part is used to insulate the first electrode tab from the first surface. The second insulating part is used to insulate the second electrode tab from the wall of the mounting hole. The third insulating part is used to insulate the third electrode tab from the second surface.

4. The battery according to claim 3, characterized in that, The inner wall of the outer casing also has an insulating coating, which includes the first insulating portion.

5. The battery according to claim 3 or 4, characterized in that, The second insulating part and the third insulating part are connected to form an integral flexible insulating component.

6. The battery according to claim 3, characterized in that, The battery also includes a seal connected to the second surface and covering the mounting hole. The third electrode ear extends from between the seal and the second surface. The minimum distance between the edge of the seal and the edge of the mounting hole is L. The thickness of the set sidewall is H, where L > H.

7. The battery according to claim 6, characterized in that, The sealing element includes a metal foil layer and a molten adhesive layer, wherein the metal foil layer is connected to the molten adhesive layer, and the molten adhesive layer is thermally bonded to the second surface.

8. The battery according to claim 7, characterized in that, The third insulating part is sleeved on the outside of the third electrode ear, and the third insulating part is fused with the molten adhesive layer to form an integral structure.

9. The battery according to claim 8, characterized in that, The third insulating part is made of the same material as the melt adhesive layer.

10. A Bluetooth device, characterized in that, include: The battery according to any one of claims 1 to 9.

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