CN214588943U

CN214588943U - Button cell structure

Info

Publication number: CN214588943U
Application number: CN202120515397.3U
Authority: CN
Inventors: 戈志敏; 肖海燕; 顾勇平; 明应时; 王永伟; 刘晓伟; 简文龙; 刘祥郡; 祝洪根; 董水金
Original assignee: Xinyu Ganfeng Electronics Co Ltd
Current assignee: Xinyu Ganfeng Electronics Co Ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-11-02
Anticipated expiration: 2031-03-11

Abstract

The utility model provides a button cell structure. Button cell structure includes metal casing, accepts in the core of rolling up in metal casing, locates roll up the support metal structure of core upper surface and locate metal casing last metal lid, metal casing is one end open-ended cavity tubular structure, metal casing's inner chamber is for being used for holding roll up the chamber that holds of core and electrolyte, support metal structure include with roll up the support metal shell that the core electricity is connected and locate support FPC spare on the metal shell, support the metal shell upper concave be equipped with be used for the installation FPC spare's mounting groove. The utility model provides a button cell structure, but make full use of space promotion battery capacity, but FPC balanced battery reduces the appearance of making an uproar at the bottom in the magnetic field that the during operation produced, can not produce the end even and make an uproar, and when the electric current surpassed safety range, the circuit of FPC protection can break off, can protect the battery, prevents to appear battery weeping, safety risks such as fire or explosion.

Description

Button cell structure

Technical Field

The utility model relates to a button cell structure.

Background

Along with bluetooth headset's popular use, the user feels the requirement improvement to experience, and current TWS earphone capacity is low, appears the weeping easily, safety risks such as drum, and the battery can produce the magnetic field at the during operation, and the interference produces the end and makes an uproar to the earphone, influences customer experience.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a button cell structure.

A button battery structure comprises a metal shell, a winding core accommodated in the metal shell, a supporting metal structure arranged on the upper surface of the winding core and a metal cover body arranged on the metal shell, wherein the metal shell is of a hollow tubular structure with an opening at one end, the inner cavity of the metal shell is a containing cavity for containing the winding core and electrolyte, the supporting metal structure comprises a supporting metal shell electrically connected with the winding core and an FPC (flexible printed circuit) piece arranged on the supporting metal shell, a mounting groove for mounting the FPC piece is concavely arranged on the supporting metal shell, a through groove penetrating through the upper end face and the lower end face of the supporting metal shell is arranged on the groove side wall of the mounting groove, the FPC piece is arranged in the mounting groove, the FPC piece comprises an FPC body, a nickel sheet and a connecting piece which are arranged on the FPC body, and the nickel sheet is convexly arranged on the FPC body and far away from the side part of the winding core, the FPC body has the end of bending, bend the end via press from both sides after leading to the groove and locate roll up the core with between the FPC body, the connecting piece is located bend and serve and deviate from the lateral part of nickel piece, the connecting piece with roll up core electric connection.

Furthermore, a copper foil circuit is arranged on the side portion, far away from the nickel sheet, of the FPC body, and the winding direction of the copper foil circuit is the same as that of the winding core, and the copper foil circuit is determined according to the specific design of the earphone.

Furthermore, a copper foil circuit is arranged on the side portion, far away from the nickel sheet, of the FPC body, and the winding direction of the copper foil circuit is opposite to that of the winding core and depends on the specific design of the earphone.

Furthermore, the copper foil circuit comprises a winding part and a connecting end, the connecting end is connected with the winding part, and at least part of the connecting end is positioned on the bending end.

Further, the connecting end comprises a first portion and a second portion, the first portion is connected with the winding portion, the second portion is located on the bent end, and the width of the first portion is smaller than that of the second portion.

Furthermore, the metal cover body is arranged at the opening end of the metal shell, and a closed cavity is formed by a space enclosed by the lower end face of the metal cover body and the cavity wall of the accommodating cavity.

Further, the metal shell, the metal cover and the supporting metal shell are all made of stainless steel materials.

The utility model provides a button cell structure, but make full use of space promotes battery capacity, can promote 45mAh from 35mAh if 1054/3.7V battery capacity; when the current exceeds the safety range, the circuit protected by the FPC is disconnected, so that the battery can be protected, and safety risks such as battery leakage, fire or explosion and the like can be prevented; the utility model discloses a button cell structure appearance is beautiful pleasing to the eye.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the drawings without creative efforts for those skilled in the art.

Fig. 1 is a schematic perspective view of a button cell structure provided by the present invention;

FIG. 2 is an exploded view of the button cell structure shown in FIG. 1;

FIG. 3 is a schematic view of the FPC part of the button cell structure shown in FIG. 1; and

fig. 4 is a schematic view of another view of the FPC of the button cell structure shown in fig. 1.

The names corresponding to the reference numbers in the drawings are as follows:

metal shell 1, winding core 2 and metal cover 3

Nickel sheet 52 for supporting metal case 4 FPC 5

Connector 53 bending end 54 FPC body 51

Detailed Description

The following is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Referring to fig. 1-4, the button cell structure of the present invention comprises a metal casing 1, a winding core 2 accommodated in the metal casing 1, a supporting metal structure disposed on the upper surface of the winding core 2, and a metal cover 3 disposed on the metal casing 1, wherein the metal casing is a hollow cylindrical structure with an open end, the inner cavity of the metal casing is a cavity for accommodating the winding core and electrolyte, the supporting metal structure comprises a supporting metal shell 4 electrically connected to the winding core and an FPC 5 disposed on the supporting metal shell 4, the supporting metal shell 4 is provided with a mounting groove for mounting the FPC, a through groove penetrating the upper and lower end surfaces of the supporting metal shell is formed on the groove side wall of the mounting groove, the FPC is disposed in the mounting groove, the FPC comprises an FPC body 51, and a nickel sheet 52 and a connecting member 53 disposed on the FPC body, the nickel sheet is convexly arranged on the FPC body, the side portion of the roll core is far away from the FPC body, the FPC body is provided with a bending end 54, the bending end is clamped on the through groove, the roll core is arranged between the FPC body, the connecting piece is arranged on the bending end, the side portion of the nickel sheet deviates from the bending end, and the connecting piece is electrically connected with the roll core.

In this embodiment, the utility model discloses a button cell structure's packaging mode is integrated into one piece, and laser welding accomplishes sealedly with the casing, and packaging technology is for annotating liquid later half encapsulation, becomes to carry out the exhaust secondary after sealed.

In this embodiment, a copper foil circuit is disposed on a side portion of the FPC body away from the nickel sheet, and a winding direction of the copper foil circuit is the same as a winding direction of the winding core, depending on a specific design of the earphone.

It is understood that, in another embodiment, a copper foil circuit is disposed on the side of the FPC body away from the nickel sheet, and the winding direction of the copper foil circuit is opposite to that of the winding core, depending on the specific design of the earphone.

In this embodiment, the copper foil circuit includes a winding portion and a connection end, the connection end is connected to the winding portion, and at least a part of the connection end is located on the bent end.

In this embodiment, the connection end includes a first portion connected to the winding portion and a second portion located on the bent end, and the first portion has a width smaller than that of the second portion. Because the line at the first part is narrower, when exceeding the safe current and passing, the disconnection here can protect the battery, prevent the safety risks such as battery weeping, fire or explosion. It will be appreciated that the width at the first portion is set according to the magnitude of the safe-use current.

In this embodiment, the metal cover is installed at the opening end of the metal shell, and a space enclosed by the lower end surface of the metal cover and the cavity wall of the accommodating cavity forms a closed cavity. It can be understood that the metal cover is mounted on the metal shell in a manner including, but not limited to, a snap connection, or a plug-in connection, or a seal-welding connection, which are detachably connected. It will be appreciated that in another embodiment, the metal cover may also be integrally formed with the metal housing.

In this embodiment, the metal case, the metal cover, and the supporting metal shell are made of a magnetically conductive or metal material. It will be appreciated that the metal shell, the metal cover and the supporting metal shell may also be made of other metal materials.

The installation process comprises the following steps: and installing the FPC component on the supporting metal shell to form the supporting metal structure, welding one tab of the winding core on the metal shell, welding the other tab of the winding core on the FPC, and welding the metal cover body on the opening end of the metal shell after injecting electrolyte into the accommodating cavity.

The utility model discloses a button cell structure, but make full use of space promotes battery capacity, can promote 45mAh from 35mAh if 1054/3.7V battery capacity; when the current exceeds the safety current, the circuit protected by the FPC is disconnected, so that the battery can be protected, and safety risks such as battery leakage, fire or explosion and the like are prevented; the utility model discloses a button cell structure appearance is beautiful pleasing to the eye.

The above embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A button cell structure which characterized in that: the metal shell, a winding core accommodated in the metal shell, a supporting metal structure arranged on the upper surface of the winding core and a metal cover body arranged on the metal shell, wherein the metal shell is of a hollow tubular structure with one end open, the inner cavity of the metal shell is an accommodating cavity for accommodating the winding core and electrolyte, the supporting metal structure comprises a supporting metal shell electrically connected with the winding core and an FPC (flexible printed circuit) piece arranged on the supporting metal shell, the supporting metal shell is concavely provided with an installing groove for installing the FPC piece, the side wall of the installing groove is provided with a through groove which penetrates through the upper end surface and the lower end surface of the supporting metal shell, the FPC piece is arranged in the installing groove, the FPC piece comprises an FPC body, and a nickel sheet and a connecting piece which are arranged on the FPC body, the nickel sheet is convexly arranged on the FPC body and is far away from the side part of the winding core, and the FPC body is provided with a bending end, the bending end is clamped behind the through groove and is located between the winding core and the FPC body, the connecting piece is located the bending end deviates from the side portion of the nickel sheet, and the connecting piece is electrically connected with the winding core.

2. A button cell construction according to claim 1, wherein: and a copper foil circuit is arranged on the side part of the FPC body far away from the nickel sheet, and the winding direction of the copper foil circuit is the same as that of the winding core.

3. A button cell construction according to claim 1, wherein: and a copper foil circuit is arranged on the side part of the FPC body far away from the nickel sheet, and the winding direction of the copper foil circuit is opposite to that of the winding core.

4. A button cell construction according to claim 2 wherein: the copper foil circuit comprises a winding part and a connecting end, the connecting end is connected with the winding part, and at least part of the connecting end is located on the bending end.

5. A button cell construction according to claim 4 wherein: the connecting end comprises a first part and a second part, the first part is connected with the winding part, the second part is located on the bent end, and the width of the first part is smaller than that of the second part.

6. A button cell construction according to claim 5 wherein: the metal cover body is arranged at the opening end of the metal shell, and a closed cavity is formed by the space enclosed by the lower end face of the metal cover body and the cavity wall of the accommodating cavity.

7. A button cell construction according to claim 6 wherein: the metal shell, the metal cover body and the supporting metal shell are all made of magnetic conductive or metal materials.