CN216698660U

CN216698660U - Button cell

Info

Publication number: CN216698660U
Application number: CN202122403970.4U
Authority: CN
Inventors: 戈志敏; 肖海燕; 顾勇平; 明应时; 刘晓伟; 黄利平; 刘祥郡; 董水金; 李阳
Original assignee: Xinyu Ganfeng Electronics Co Ltd
Current assignee: Xinyu Ganfeng Electronics Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-06-07
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to the technical field of batteries, in particular to a button cell, which is a small button cell applied in a wireless earphone. The connecting piece is pressed in advance on first fixed part one side, and the lid is pressed in advance and is kept away from at the connecting piece on one side of first fixed part, form the battery face lid that the thickness is thinner whole, and with battery face lid welded seal on the opening end of battery drain pan again, sealing performance is good, avoids the battery to leak the liquid seepage liquid condition in the recycling use, and, the battery face lid that the thickness is thinner can effectively promote battery capacity usage space.

Description

Button cell

Technical Field

The utility model relates to the technical field of batteries, in particular to a button cell.

Background

With the continuous development of wireless technology, the original cable transmission mode is gradually replaced by wireless earphones. The wireless headset communicates with the terminal through a wireless communication protocol (such as bluetooth), and has the characteristics of wireless connection and convenient use compared with a wired headset. Among them, the recent true wireless interconnection stereo bluetooth headset is a typical one of the wireless headsets.

The existing earphone battery has low sealing performance, liquid leakage and seepage in the recycling process, and meanwhile, the space utilization rate inside the battery is low, so that the battery capacity utilization space is low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a button cell, wherein a connecting piece is pre-pressed on one side of a first fixing part, a cover body is pre-pressed on one side of the connecting piece away from the first fixing part to form a thin cell surface cover whole, and then the cell surface cover is welded and sealed on the opening end of a cell bottom shell, so that the sealing performance is good, the liquid leakage and seepage conditions of the cell in the recycling process are avoided, and the thin cell surface cover can effectively improve the use space of the cell capacity.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a button cell which comprises a cell face cover, a bottom shell and a cell, wherein the cell is arranged in the bottom shell, an electrode of the cell, which is close to one side of the bottom shell, is connected with the bottom shell, and the cell face cover is used for sealing the opening end of the bottom shell.

As a further improvement of the above technical solution, the battery cover includes a first fixing portion, a connecting member, a welding member, a cover body, and a sealing member, the connecting member is disposed on one side of the first fixing portion, the welding member is disposed on one side of the connecting member away from the first fixing portion, the cover body is disposed on one side of the connecting member away from the first fixing portion, a through hole for the welding member to pass through is disposed on the cover body, the cover body is sealed at the open end of the bottom case, the first fixing portion is connected to the cathode or the anode of the battery cell, a liquid injection hole communicated with the inside of the battery bottom case is further disposed on the cover body, and the sealing member is disposed on the liquid injection hole and used for sealing the liquid injection hole.

As a further improvement of the above technical solution, the bottom case, the first fixing portion, the welding member, and the cover are all made of conductive materials.

As a further improvement of the technical scheme, the connecting piece is a conductor with an insulating layer on the outer surface.

As a further improvement of the above technical solution, the battery further includes an insulating portion, the insulating portion is disposed between the battery cell and the bottom of the bottom casing, and the insulating portion is disposed between the battery cell and the first fixing portion.

As a further improvement of the above technical solution, the connecting member is pre-pressed on one side of the first fixing portion, and the cover body is pre-pressed on one side of the connecting member away from the first fixing portion.

The utility model has the beneficial effects that: the connecting piece is pressed in advance on first fixed part one side, and the lid is pressed in advance and is kept away from at the connecting piece on one side of first fixed part, form the battery face lid that the thickness is thinner whole, and with battery face lid welded seal on the opening end of battery drain pan again, sealing performance is good, avoids the battery to leak the liquid seepage liquid condition in the recycling use, and, the battery face lid that the thickness is thinner can effectively promote battery capacity usage space.

Drawings

Fig. 1 is an exploded view of a battery of the present invention.

Fig. 2 is a schematic structural view of a battery according to the present invention.

Wherein the figures include the following reference numerals: 1. bottom shell, 2, electric core, 3, insulating part, 4, first fixed part, 5, connecting piece, 6, welding part, 7, lid, 71, through hole, 72, notes liquid hole, 8, closure.

Detailed Description

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the utility model are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for completeness and fully convey the scope of the utility model to the skilled person.

In an embodiment, referring to fig. 1, the embodiment provides a button cell, specifically, a small button cell applied in a wireless headset, where the button cell includes a cell cover, a bottom case 1 and a cell 2, the cell 2 is disposed in the bottom case 1, specifically, a tab at one end of the cell 2 is fixedly connected to a bottom end of the bottom case 1, and the connection manner may be welding, specifically, laser welding, manual welding or resistance welding, and is preferably laser welding; the battery face lid is used for sealing the open end of drain pan 1, and specific battery face lid is the battery face lid of pre-compaction laminating formula, and battery face lid sealing performance is good, avoids the battery to leak the liquid weeping condition in the recycling use, and, the battery face lid that the thickness is thinner can effectively promote battery capacity usage space.

In one embodiment, referring to fig. 1 and 2, the present embodiment provides a battery face cover, specifically, a face cover of a TWS button cell, the battery face cover includes a first fixing portion 4, a connecting member 5, a welding member 6, a cover 7 and a sealing member 8, wherein the connecting member 5 is disposed on one side of the first fixing portion 4, specifically, the connecting member 5 and the first fixing portion 4 are in conduction with each other; the welding part 6 is arranged on one side of the connecting piece 5 far away from the first fixing part 4, wherein the welding part 6 is mutually communicated with the connecting piece 5, the welding part 6 can be square, round or opposite, and the welding part 6 is preferably a cylindrical pad; the cover 7 is arranged on one side of the connecting piece 5 far away from the first fixing part 4, and specifically, the cover 7 and the connecting piece 5 are mutually insulated; the cover 7 is provided with a through hole 71 for the welding component 6 to pass through, specifically, the through hole 71 can be a square hole or a round hole, the through hole 71 is preferably a round hole and has a diameter larger than that of the welding component 6, and the cover 7 is closed at the opening end of the battery bottom case 1; the first fixing portion 4 is connected to the cathode or the anode of the battery cell 2 in a welding manner, specifically, fusion welding, pressure welding, brazing, or the like; the cover body 7 is also provided with a liquid injection hole 72 communicated with the inside of the battery bottom case 1, the liquid injection hole 72 can be square, round or special-shaped, preferably round, specifically, the liquid injection hole 72 is a counter-sunk hole, and the liquid injection hole 72 is used for injecting electrolyte into the closed battery; the closing member 8 is provided on the pouring hole 72 and serves to close the pouring hole 72, and specifically, the closing member 8 is a metal sheet, and the cross-section may be square, circular or irregular, preferably circular, so as to form a good fit with the pouring hole 72.

In one embodiment, referring to fig. 2, the bottom case 1, the first fixing portion 4 and the cover 7 are all made of conductive materials, and specifically, the first fixing portion 4 and the cover 7 are both made of metal sheets and are both made of steel materials by stamping.

In one embodiment, referring to fig. 2, an insulating portion 3 is further included, the insulating portion 3 is disposed between the battery cell 2 and the bottom of the bottom case 1, and the insulating portion 3 is disposed between the battery cell 2 and the first fixing portion 4, specifically, the insulating portion 3 may be a prefabricated insulating sheet disposed between the battery cell 2 and the bottom of the bottom case 1 or between the battery cell 2 and the first fixing portion 4, or may be an insulating sheet formed by coating.

In one embodiment, referring to fig. 2, the first fixing portion 4 and the connecting member 5 are each formed with a recess on a side thereof close to the pouring hole 72, the recess enabling the electrolyte poured from the pouring hole 72 to smoothly flow into the battery.

In one embodiment, referring to fig. 2, the connecting member 5 is an electric conductor with an insulating layer on the outer surface, the insulating layer insulates the connecting member 5 and the cover 7 from each other, in particular, the connecting member 5 is an electrode connecting member, and the welding member 6 may be a smt member or welded on the connecting member 5, in particular, the welding may be manual welding.

In one embodiment, referring to fig. 2, the connecting member 5 is pre-pressed on the side of the first fixing portion 4, so that the connecting member 5 is attached to the side of the first fixing portion 4, and the cover 7 is pre-pressed on the side of the connecting member 5 away from the first fixing portion 4, so that the cover 7 is attached to the side of the connecting member 5, so that the formed battery cover not only has good sealing performance, but also has a small thickness, so that the battery capacity usage space can be effectively increased.

In one embodiment, the cover 7 is fixedly connected with the battery bottom case 1 for sealing the opening end of the battery bottom case 1, and the connection manner may be welding, riveting, bonding, and the like, wherein the welding may be fusion welding, pressure welding, brazing, and the like, and specifically, the connection manner of the cover 7 and the battery bottom case 1 is preferably welding, wherein the welding enables the sealing performance of the cover 7 and the battery bottom case 1 to be good and the welding precision in the precision welding of micro and small parts to be high.

In one embodiment, the first fixing portion 4, the cover 7 and the closing member 8 are made of conductive metal, and the conductive metal may be made of corrosion-resistant conductive metal, such as stainless steel, or may be made of conductive metal-coated plastic, and the conductive metal-coated plastic of the first fixing portion 4, the cover 7 and the closing member 8 can reduce the weight of the earphone and reduce the load of the human ear.

In one embodiment, break is present in the internal wiring of the connector 5, which can improve battery safety.

The examples merely represent preferred embodiments of the utility model, which are described in greater detail and detail, but are not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A button cell battery, characterized in that:

the button cell comprises a cell face cover, a bottom case (1) and a cell (2), wherein the cell (2) is arranged in the bottom case (1), an electrode of the cell (2) close to one side of the bottom case (1) is connected with the bottom case (1), and the cell face cover is used for closing the opening end of the bottom case (1);

the battery face cover comprises a first fixing part (4), a connecting part (5), a welding part (6), a cover body (7) and a sealing part (8), wherein the connecting part (5) is arranged on one side of the first fixing part (4), the welding part (6) is arranged on one side of the connecting part (5) far away from the first fixing part (4), the cover body (7) is arranged on one side of the connecting part (5) far away from the first fixing part (4), a through hole (71) for the welding part (6) to pass through is formed in the cover body (7), the cover body (7) is sealed at the opening end of the bottom case (1), the first fixing part (4) is connected with the cathode or the anode of the battery core (2), a liquid injection hole (72) communicated with the interior of the battery bottom case (1) is further formed in the cover body (7), and the sealing part (8) is arranged on the liquid injection hole (72), and is used for sealing the liquid injection hole (72).

2. A button cell according to claim 1, characterized in that:

the bottom shell (1), the first fixing part (4), the welding part (6) and the cover body (7) are all made of conductive materials.

3. A button cell according to claim 1, characterized in that:

the connecting piece (5) is a conductor with an insulating layer on the surface.

4. A button cell according to claim 1, characterized in that:

the battery cell is characterized by further comprising an insulating part (3), the insulating part (3) is arranged between the battery cell (2) and the bottom of the bottom shell (1), and the insulating part (3) is arranged between the battery cell (2) and the first fixing part (4).

5. A button cell according to claim 1, characterized in that:

the connecting piece (5) is pre-pressed on one side of the first fixing part (4), and the cover body (7) is pre-pressed on one side, far away from the first fixing part (4), of the connecting piece (5).