Nickel sheet, button cell and earphone assembly

Abstract

In order to improve the disassembly and assembly convenience of the button cell and ensure the stable electric connection of the cell in the charging and discharging process, the invention provides a nickel sheet, a button cell and an earphone assembly, and the nickel sheet is partially arranged outside a shell of a battery cell of the button cell and is in insulated connection with the shell; the nickel sheet comprises a first connecting part, a supporting part and a second connecting part, and the supporting part is connected with the first connecting part and the second connecting part; the first connecting part is arranged at the end part of the shell and is electrically connected with a pole of the button cell; the supporting part is arranged at the side part of the shell; the second connecting part comprises an elastic contact part, and a charging contact area is arranged on the elastic contact part; the elastic contact part is parallel to the tangent line of the peripheral cambered surface of the shell, and a gap is formed between the elastic contact part and the cambered surface.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a nickel sheet, a button battery and an earphone assembly. Background Art

[0002] As a new battery technology, button batteries are increasingly being used in the headphone industry. They are compact, lightweight, safe, and efficient, and their compact size better suits headphone design requirements. In recent years, as user demands have become increasingly demanding, the performance requirements for button batteries have become increasingly stringent.

[0003] Current wireless Bluetooth headsets generally use a non-removable battery design. When the battery life is reduced or affected by sweat and water stains, the maintenance technology and cost are high. In addition, the charging springs of the headsets rely on mechanical crimping. Long-term use will cause the spring stress to relax, causing charging interruptions and other problems. Summary of the Invention

[0004] The object of the present invention is to provide a nickel sheet, a button battery and an earphone assembly to solve the problem in the prior art that the charging spring of the button battery easily causes charging interruption.

[0005] The technical solutions adopted by the present invention to solve the above technical problems are as follows: In a first aspect, the present invention provides a nickel sheet, wherein the nickel sheet is partially disposed outside the housing of a button battery cell and is insulated from the housing; the nickel sheet includes a first connecting portion, a supporting portion, and a second connecting portion, wherein the supporting portion connects the first connecting portion and the second connecting portion; the first connecting portion is disposed at an end of the housing and electrically connected to a terminal of the button battery; the supporting portion is disposed on a side of the housing; the second connecting portion includes an elastic contact portion, wherein the elastic contact portion is provided with a charging contact area; The elastic contact portion is parallel to a tangent line of the outer peripheral arc surface of the shell, and a gap is provided between the elastic contact portion and the arc surface. When the earphone is placed in the earphone compartment, the elastic contact portion can elastically move toward the battery side wall; the support portion confines the elastic contact portion between the battery side wall and the earphone compartment; the elastic contact portion is parallel to a tangent line of the arc surface, which is an extension of the plane where the support portion is located. The elastic contact portion is laterally deformed within a vertical plane, making it easy for the elastic contact portion to deform and rebound. The gap between the elastic contact portion and the arc surface provides a buffer space for the lateral deformation of the elastic contact portion. This nickel sheet can be disassembled separately, has a moderate size, a low difficulty in the preparation process, and a strong resistance to metal fatigue, thereby reducing the problem of poor contact of the earphone charging.

[0006] Optionally, the second connecting portion further includes a first connecting segment, and the first connecting segment is connected to the supporting portion; The elastic contact portion includes a second connecting segment and a guide segment. The second connecting segment connects the first connecting segment and the charging contact area, and the second connecting segment is inclined from one end of the first connecting segment toward a side away from the arc surface. The guide segment is connected to the end of the charging contact area away from the second connecting segment, and the guide segment is inclined from one end of the charging contact area toward a side closer to the arc surface. The inclination angle of the second connecting segment provides an elastic deformation range and rebound force for the charging contact area. The guide segment limits the elastic deformation degree of the charging contact area and provides guidance for the removable installation of the nickel sheet in the charging compartment.

[0007] Optionally, the charging contact area is an arcuate surface connecting the second connecting section and the guide section, and the arcuate surface is recessed in a direction away from the arcuate surface to increase the electrical connection contact area with the earphone compartment. The charging contact area realizes the electrical connection between the button battery in the earphone and the earphone compartment, thereby realizing earphone charging.

[0008] Optionally, the nickel sheet further includes a connecting arm connecting the support portion and the first connecting section, with a gap formed between the elastic contact portion and the support portion. The gap between the elastic contact portion and the support portion facilitates deformation of the elastic contact portion and prevents the elastic contact portion from becoming stuck between the support portion and the battery cell after a mechanical collision, thereby preventing the earphones from charging.

[0009] Optionally, the first connecting portion further includes a notch, the notch being provided on one side of the connection between the first connecting portion and the support portion. The support portion extends perpendicularly to the first connecting portion, and the support portion is in contact with the housing. The notch is arc-shaped and smoothly connects to the support portion, facilitating contact between the support portion and the peripheral surface of the battery cell.

[0010] Optionally, the nickel sheet further includes a positioning protrusion disposed at one end of the first connecting portion, the positioning protrusion extending beyond the arc surface at an end away from the first connecting portion. The projection of the positioning protrusion on the bottom surface of the battery cell extends beyond the elastic contact portion, and the positioning protrusion cooperates with a positioning recess in the earphone compartment to position the elastic contact portion.

[0011] Optionally, the first connecting portion is provided with a recessed portion for connecting to the pole. The recessed portion may be circular, elliptical, square, etc., and is similar in shape to the end face of the pole.

[0012] In a second aspect, the present invention provides a button battery, comprising a battery cell, a first insulating member, a second insulating member, and the nickel sheet described above, wherein the battery cell comprises a shell and a terminal, and the first insulating member is disposed between the nickel sheet and the shell; The first connecting portion is provided on the end surface of the housing, is in contact with the first insulating member, and is electrically connected to the pole. The supporting portion is provided on one side of the circumference of the housing, is in contact with the circumference of the first insulating member, and isolates the housing from contact with the nickel sheet. The second insulating member is disposed on a side of the nickel sheet away from the first insulating member, thereby reducing the risk of short circuit and improving the stability of the button battery.

[0013] Optionally, the battery cell further includes a first polarity tab and a second polarity tab, and the nickel sheet, the first polarity tab, and the second polarity tab are sequentially arranged circumferentially of the housing. By defining the positional relationship between the nickel sheet and the tabs, the electromagnetic field within the button battery is regulated, thereby reducing the noise floor of headphones caused by the button battery.

[0014] Optionally, the end surface of the housing is provided with a marking and positioning portion and a liquid injection hole, which can be used to determine the installation position of the nickel sheet on the battery cell, thereby facilitating the determination of the welding position of the nickel sheet.

[0015] Optionally, the first insulating member includes an end face insulating portion and a first circumferential insulating portion, the end face insulating portion is provided with a first through hole, the end face insulating portion is provided between the first connecting portion and the end face of the shell; the first through hole is provided opposite to the pole; the first through hole is used for electrically connecting the recessed portion of the nickel sheet to the pole; The end surface insulating portion and the second insulating member are both provided with a second through hole, and the second through hole is used to expose the housing; The first circumferential insulating portion is in contact with the circumferential surface of the housing, and the projections of the support portion and the second connecting portion on the first circumferential insulating portion are located on the circumferential insulating portion to prevent short circuits caused by contact between the nickel sheet and the housing. The first circumferential insulating portion is thicker than the end face insulating portion to prevent damage at the connection between the first circumferential insulating portion and the end face insulating portion due to bending in the event of external impact.

[0016] Optionally, the button battery further includes a third insulating member disposed between the first insulating member and the second insulating member. The third insulating member is provided with a first notch and a second notch, the nickel sheet being received within the first notch, and the second notch being disposed opposite the second through hole. The third insulating member has the same thickness as the nickel sheet and is flush with the nickel sheet, and is used to fill the remaining space within the button battery and define the position of the nickel sheet.

[0017] Optionally, the nickel sheet includes a positioning protrusion, and the second insulating member further includes a protrusion and a second circumferential insulating portion, wherein the protrusion is in contact with and covers the positioning protrusion; the second circumferential insulating portion is in contact with the support portion and is disposed on a side of the support portion facing away from the first insulating member. The protrusion of the second insulating member positions and installs the second insulating member, and also insulates the nickel sheet's positioning protrusion, preventing short circuits.

[0018] In a third aspect, the present invention provides an earphone assembly, comprising an earphone and an earphone charging box, the earphone comprising the aforementioned button battery, the earphone being receivable in an earphone compartment of the earphone charging box, the charging contact area being in elastic contact with the earphone compartment; The earphone compartment includes a metal contact, which is electrically connected to the housing. The metal contact (pogo pin) of the earphone compartment passes through the second through hole of the first insulating member and the second insulating member to be electrically connected to the housing.

[0019] In the present invention, a button-type battery is assembled by connecting detachable components, which not only realizes convenient disassembly and assembly, but also ensures efficient charge and discharge performance and insulation safety of the battery; The elastic nickel sheet in the button battery of the present invention has the advantages of precise positioning, stable connection, long service life, and can still maintain good contact after enduring certain mechanical collisions. The button battery and earphone assembly of the present invention regulates the internal electromagnetic field of the button battery by limiting the positional relationship between the nickel sheet and the tab, thereby reducing the earphone background noise problem caused by the button battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a schematic diagram of the structure of a nickel sheet in one embodiment of the present invention; Figure 2 This is a schematic diagram of a battery explosion structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of the battery structure in one embodiment of the present invention; Figure 4 is a schematic structural diagram of a first insulating member in one embodiment of the present invention; Figure 5 is a schematic structural diagram of a second insulating member in one embodiment of the present invention; Figure 6is a schematic structural diagram of a third insulating member in one embodiment of the present invention; Figure 7 FIG1 is a top view of a button-type battery according to an embodiment of the present invention.

[0022] Description of main component symbols: 1. Nickel sheet; 11. First connecting portion; 111. Notch; 112. Recessed portion; 12. Support portion; 13. Second connecting portion; 131. First connecting section; 132. Second connecting section; 133. Guide section; 14. Elastic contact portion; 141. Charging contact area; 15. Connecting arm; 16. Positioning protrusion; 100. Arc surface; 2. Battery cell; 21. First polarity tab; 22. Second polarity tab; 3. First insulating member; 31. End surface insulating portion; 32. First circumferential insulating portion; 33. First through hole; 34. Second through hole; 4. Second insulating member; 42. Protrusion; 43. Second circumferential insulating portion; 5. Third insulating member; 51. First notch; 52. Second notch; 61. Identification and positioning portion; 62. Liquid injection hole. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The present invention is further described below with reference to the following examples.

[0025] like Figure 1 As shown, an embodiment of the present invention provides a nickel sheet, which is partially arranged outside the shell of a button battery cell and is insulated from the shell; the nickel sheet 1 includes a first connecting part 11, a supporting part 12 and a second connecting part 13, and the supporting part 12 connects the first connecting part 11 and the second connecting part 13; the first connecting part 11 is arranged at the end of the shell and is electrically connected to the pole of the button battery; the supporting part 12 is arranged on the side of the shell; the second connecting part 13 includes an elastic contact part 14, and a charging contact area 141 is provided on the elastic contact part 14, and the surface of the charging contact area 141 is plated with a strong conductive layer of gold or silver; the elastic contact part 14 is parallel to a tangent line of the outer peripheral arc surface 100 of the shell, and a gap is provided between the elastic contact part 14 and the arc surface 100.

[0026] Specifically, when the earphones are placed in the earphone compartment, the elastic contact portion 14 can elastically move toward the battery sidewall; the support portion 12 confines the elastic contact portion 14 between the battery sidewall and the earphone compartment; the elastic contact portion 14 is parallel to a tangent line of the curved surface, which is an extension of the plane in which the support portion 12 resides. The elastic contact portion 14 undergoes lateral deformation within a vertical plane, making it susceptible to deformation and rebound. The gap between the elastic contact portion 14 and the curved surface 100 provides a buffer for the lateral deformation of the elastic contact portion 14. This nickel sheet 1 is individually removable, has a moderate size, is easy to manufacture, and has strong resistance to metal fatigue, thus reducing the problem of poor contact during earphone charging.

[0027] In some embodiments, the second connecting portion 13 further includes a first connecting segment 131 , and the first connecting segment 131 is connected to the supporting portion 12 ; The elastic contact portion 14 includes a second connecting section 132 and a guide section 133. The second connecting section 132 connects the first connecting section 131 and the charging contact area 141, and the second connecting section 132 is inclined from one end of the first connecting section 131 to the side away from the arc surface 100; the guide section 133 is connected to the end of the charging contact area 141 away from the second connecting section 132, and the guide section 133 is inclined from one end of the charging contact area 141 to the side close to the arc surface 100.

[0028] Specifically, the inclination angle of the second connecting section 132 is 63°~67°, which provides an elastic deformation range and rebound force for the charging contact area 141. The guide section 133 limits the elastic deformation degree of the charging contact area 141, and at the same time provides guidance for the detachable installation of the nickel sheet in the charging compartment through the guide section.

[0029] In some embodiments, the charging contact area 141 is an arcuate surface connecting the second connecting section 132 and the guide section 133, and the arcuate surface is recessed in a direction away from the arcuate surface 100 to increase the electrical connection contact area with the earphone compartment.

[0030] Specifically, the charging contact area 141 realizes the electrical connection between the button battery in the earphone and the earphone compartment, thereby charging the earphone. The side of the elastic contact area facing the charging compartment is plated with a conductive layer, and the material of the conductive layer includes but is not limited to gold or silver.

[0031] In some embodiments, the nickel sheet 1 further includes a connecting arm 15 , wherein the connecting arm 15 connects the supporting portion 12 and the first connecting segment 131 , and a gap is formed between the elastic contact portion 14 and the supporting portion 12 .

[0032] Specifically, the connecting arm 15 and the first connecting section 131 are arc-shaped and fit the circumference of the battery cell 2, with a gap width of 0.5~0.55mm. The gap formed between the elastic contact portion 14 and the support portion 12, on the one hand, facilitates the deformation of the elastic contact portion 14, and on the other hand, prevents the elastic contact portion 14 from being stuck between the support portion 12 and the battery cell 2 after a mechanical collision, causing the earphones to fail to charge.

[0033] In some embodiments, the first connecting portion 11 further includes a notch portion 111, which is arranged on one side of the connection between the first connecting portion 11 and the supporting portion 12. The extension direction of the supporting portion 12 is perpendicular to the extension direction of the first connecting portion 11. The supporting portion 12 is an arc surface and fits with the shell.

[0034] Specifically, the notch portion 111 is arc-shaped and smoothly connected to the support portion 12 , so as to facilitate the fitting of the support portion 12 and the circumferential surface of the battery cell 2 .

[0035] In some embodiments, the nickel sheet 1 further includes a positioning protrusion 16 . The positioning protrusion 16 is disposed at one end of the first connecting portion 11 , and the end of the positioning protrusion 16 away from the first connecting portion 11 extends out of the arc surface 100 .

[0036] Specifically, the projection of the positioning protrusion 16 on the bottom surface of the battery cell 2 exceeds the elastic contact portion 14, and the positioning protrusion 16 cooperates with the positioning recess of the earphone compartment to achieve the positioning of the elastic contact portion 14.

[0037] In some embodiments, the first connecting portion 11 is provided with a recessed portion 112 for connecting with a pole.

[0038] Specifically, the recessed portion 112 may be circular, elliptical, square, etc., which is close to the shape of the end face of the pole, and the depth of the recessed portion 112 is 0.1-0.15 mm.

[0039] like Figure 2~Figure 3 As shown, an embodiment of the present invention provides a button battery, comprising a battery cell 2, a first insulating member 3, a second insulating member 4 and the above-mentioned nickel sheet 1, wherein the battery cell 2 comprises a shell and a terminal, and the first insulating member 3 is disposed between the nickel sheet 1 and the shell; The first connecting portion 11 is provided on the end surface of the housing, affixed to the first insulating member 3, and electrically connected to the pole. The supporting portion 12 is provided on one side of the circumference of the housing, affixed to the circumference of the first insulating member 3, isolating the housing from contact with the nickel sheet 1. The second insulating member 4 is disposed on a side of the nickel sheet 1 facing away from the first insulating member 3 .

[0040] Specifically, the first insulating member 3 and the second insulating member 4 are used to reduce the risk of short circuit and improve the stability of the button battery.

[0041] In some embodiments, as Figure 7 As shown, the battery cell 2 further includes a first polarity tab 21 and a second polarity tab 22. The nickel sheet 1, first polarity tab 21, and second polarity tab 22 are sequentially arranged circumferentially of the housing. Within the plane of the end face of the housing, with the center of the end face of the housing as the center of the circle, the central angle between the nickel sheet 1 and the first polarity tab 21 projected onto the end face is 40° to 60°. The polarity of the first polarity tab 21 is the same as that of the nickel sheet 1.

[0042] Specifically, by maintaining the central angle between the tabs of the same polarity and the nickel sheet 1 within a range of 40° to 60°, the headphone noise floor can be reduced without adding additional components, thereby reducing the weight and volume of button batteries. This aligns with current headphone technology trends that demand high sound quality while remaining lightweight and compact. When calculating the central angle, a line passing through one side of the nickel sheet 1 is considered one side of the central angle.

[0043] In some embodiments, the end face of the shell is provided with an identification positioning portion 61 and a liquid injection hole 62, and the central angle formed by the liquid injection hole 62 and the identification positioning portion 61 on the end face is 68°~72°, and the liquid injection hole 62 is provided between the first polarity pole ear 21 and the second polarity pole ear 22, and the central angle formed by the projection of the first polarity pole ear 21 and the liquid injection hole 62 on the end face is 40°~50°, and the central angle formed by the projection of the second polarity pole ear 22 and the liquid injection hole 62 on the end face is 40°~50°; the central angle of the projection of the identification positioning portion 61 and the first polarity pole ear 21 on the end face is 15°~35°.

[0044] Specifically, since the tab is already fixed inside the battery cell 2 when the nickel sheet 1 is installed, its exact position cannot be determined from the outside. Therefore, the position of the liquid injection hole 62 on the surface of the battery cell 2 is used to infer the position. Since the liquid injection hole 62 is offset from the center after sealing, the welding position of the nickel sheet 1 is further inferred from the position of the identification and positioning portion 61. When calculating the central angle of the circle, the straight line passing through the center of the identification and positioning portion 61 (i.e., the QR code identification area) and the center of the liquid injection hole 62 is used as one side of the central angle.

[0045] In some embodiments, as Figure 4~Figure 5As shown, the first insulating member 3 includes an end face insulating portion 31 and a first circumferential insulating portion 32. The end face insulating portion 31 is provided with a first through hole 33. The end face insulating portion 31 is provided between the first connecting portion 11 and the end face of the housing; the first through hole 33 is provided opposite to the pole; The end surface insulating portion 31 and the second insulating member 4 are both provided with a second through hole 34 , and the second through hole 34 is used to expose the housing; The first circumferential insulating portion 32 is in contact with the circumferential surface of the shell, and the projections of the support portion 12 and the second connecting portion 13 on the first circumferential insulating portion 32 are located on the circumferential insulating portion to prevent the nickel sheet 1 from contacting the shell and causing a short circuit.

[0046] Specifically, the first through hole 33 is used for electrical connection between the recessed portion 112 of the nickel sheet 1 and the pole. The thickness of the first circumferential insulating portion 32 is greater than that of the end face insulating portion 31 to prevent the connection between the first circumferential insulating portion 32 and the end face insulating portion 31 from being damaged due to bending when subjected to external impact.

[0047] like Figure 6 As shown, in some embodiments, the button battery further includes a third insulating member 5, which is disposed between the first insulating member 3 and the second insulating member 4. The third insulating member 5 is provided with a first notch 51 and a second notch 52. The nickel sheet 1 is accommodated in the first notch 51, and the second notch 52 is disposed opposite to the second through hole 34.

[0048] Specifically, the thickness of the third insulating member 5 is the same as that of the nickel sheet 1 , and is flush with the nickel sheet 1 , and is used to fill the empty space inside the button battery and define the position of the nickel sheet 1 .

[0049] In some embodiments, the nickel sheet 1 includes a positioning protrusion 16, and the second insulating member 4 also includes a protrusion 42 and a second circumferential insulating portion 43, the protrusion 42 is in contact with the positioning protrusion 16 and covers the positioning protrusion 16; the second circumferential insulating portion 43 is in contact with the support portion 12 and is arranged on the side of the support portion 12 away from the first insulating member 3.

[0050] Specifically, the protrusion 42 of the second insulating member 4 realizes the positioning and installation of the second insulating member 4 and plays the role of insulating the positioning protrusion 16 of the nickel sheet 1 to prevent short circuit.

[0051] One embodiment of the present invention provides an earphone assembly, comprising an earphone and an earphone charging box, wherein the earphone comprises the aforementioned button battery, the earphone can be stored in an earphone compartment of the earphone charging box, and the charging contact area 141 is in elastic contact with the earphone compartment; The earphone compartment includes metal contacts, which are electrically connected to the shell.

[0052] Specifically, the metal contacts (pogo pins) of the earphone compartment pass through the second through holes 34 of the first insulating member 3 and the second insulating member 4 to be electrically connected to the housing.

[0053] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A nickel sheet, wherein the nickel sheet is partially disposed outside the housing of a button battery cell and is insulated from the housing; characterized in that: The nickel sheet (1) comprises a first connecting portion (11), a supporting portion (12) and a second connecting portion (13), wherein the supporting portion (12) connects the first connecting portion (11) and the second connecting portion (13); The first connecting portion (11) is arranged at the end of the shell and is electrically connected to the pole of the button battery; The support portion (12) is arranged on a side portion of the shell; The second connecting portion (13) comprises an elastic contact portion (14), and a charging contact area (141) is provided on the elastic contact portion (14); The elastic contact portion (14) is parallel to a tangent line of the outer peripheral arc surface (100) of the shell, and a gap is provided between the elastic contact portion (14) and the arc surface (100).

2. The nickel sheet according to claim 1, wherein The second connecting portion (13) further comprises a first connecting section (131), wherein the first connecting section (131) is connected to the supporting portion (12); The elastic contact portion (14) includes a second connecting section (132) and a guide section (133), wherein the second connecting section (132) connects the first connecting section (131) and the charging contact area (141), and the second connecting section (132) is inclined from one end of the first connecting section (131) to a side away from the arc surface (100); the guide section (133) is connected to an end of the charging contact area (141) away from the second connecting section (132), and the guide section (133) is inclined from one end of the charging contact area (141) to a side close to the arc surface (100).

3. The nickel sheet according to claim 2, characterized in that The charging contact area (141) is an arcuate surface connecting the second connecting section (132) and the guide section (133), and the arcuate surface is recessed in a direction away from the arcuate surface (100).

4. The nickel sheet according to claim 2, wherein The nickel sheet (1) further comprises a connecting arm (15), wherein the connecting arm (15) connects the supporting portion (12) and the first connecting section (131), and a gap is formed between the elastic contact portion (14) and the supporting portion (12).

5. The nickel sheet according to claim 1, wherein The first connecting portion (11) further comprises a notch portion (111), wherein the notch portion (111) is arranged on one side of a connection between the first connecting portion (11) and the supporting portion (12), an extension direction of the supporting portion (12) being perpendicular to an extension direction of the first connecting portion (11), and the supporting portion (12) being in contact with the housing.

6. The nickel sheet according to claim 1, characterized in that The nickel sheet (1) further comprises a positioning protrusion (16), wherein the positioning protrusion (16) is arranged at one end of the first connecting portion (11), and the positioning protrusion (16) extends out of the arc surface (100) at one end away from the first connecting portion (11).

7. The nickel sheet according to claim 1, wherein The first connecting portion (11) is provided with a recessed portion (112) for connecting to a pole.

8. A button battery, characterized in that: Comprising a battery core (2), a first insulating member (3), a second insulating member (4) and a nickel sheet as claimed in any one of claims 1 to 7, the battery core (2) comprising a shell and a pole, and the first insulating member (3) being arranged between the nickel sheet (1) and the shell; The first connecting portion (11) is arranged on the end surface of the shell, is in contact with the first insulating member (3), and is electrically connected to the pole; the supporting portion (12) is arranged on one side of the circumference of the shell, and is in contact with the circumference of the first insulating member (3); The second insulating member (4) is arranged on a side of the nickel sheet (1) facing away from the first insulating member (3).

9. The button battery according to claim 8, characterized in that The battery cell (2) further comprises a first polarity tab (21) and a second polarity tab (22), and the nickel sheet (1), the first polarity tab (21), and the second polarity tab (22) are arranged in sequence in the circumferential direction of the shell.

10. The button battery according to claim 8, characterized in that The end surface of the shell is provided with a marking positioning portion (61) and a liquid injection hole (62).

11. The button battery according to claim 8, characterized in that The first insulating member (3) comprises an end face insulating portion (31) and a first circumferential insulating portion (32); a first through hole (33) is provided on the end face insulating portion (31); the end face insulating portion (31) is provided between the first connecting portion (11) and the end face of the shell; the first through hole (33) is provided opposite to the pole; The end surface insulating portion (31) and the second insulating member (4) are both provided with a second through hole (34), and the second through hole (34) is used to expose the housing; The first circumferential insulating portion (32) is in contact with the circumferential surface of the housing, and projections of the support portion (12) and the second connecting portion (13) on the first circumferential insulating portion (32) are located on the circumferential insulating portion.

12. The button battery according to claim 11, characterized in that The button battery further includes a third insulating member (5), which is arranged between the first insulating member (3) and the second insulating member (4). The third insulating member (5) is provided with a first notch (51) and a second notch (52). The nickel sheet (1) is accommodated in the first notch (51), and the second notch (52) is arranged opposite to the second through hole (34).

13. The button battery according to claim 8, characterized in that The nickel sheet (1) includes a positioning protrusion (16), and the second insulating member (4) further includes a protrusion (42) and a second circumferential insulating portion (43), wherein the protrusion (42) is in contact with the positioning protrusion (16) and covers the positioning protrusion (16); the second circumferential insulating portion (43) is in contact with the support portion (12) and is arranged on a side of the support portion (12) facing away from the first insulating member (3).

14. An earphone assembly, characterized in that: The invention comprises an earphone and an earphone charging box, wherein the earphone comprises a button battery according to any one of claims 8 to 13, the earphone can be stored in an earphone compartment of the earphone charging box, and the charging contact area (141) is in elastic contact with the earphone compartment; The earphone compartment includes metal contacts, which are electrically connected to the shell.

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