CN216903258U

CN216903258U - Button cell

Info

Publication number: CN216903258U
Application number: CN202220146316.1U
Authority: CN
Inventors: 陈伟; 黄学华; 谢建华
Original assignee: Zhongshan Zhongwangde New Energy Technology Co ltd
Current assignee: Zhongshan Zhongwangde New Energy Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-05
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a button cell which comprises a shell, a cover body, a pole and a winding core. The shell is provided with an accommodating cavity and a first opening, and the first opening is communicated with the accommodating cavity; the cover body covers the first opening, a bulge is arranged on the cover body in an outward extending mode, an installation cavity communicated with the accommodating cavity is formed in the bulge, and a second opening communicated with the installation cavity is formed in one end, far away from the accommodating cavity, of the bulge; the pole is arranged in the mounting cavity, and an insulating sealing colloid is arranged between the pole and the cover body; roll up the core and set up in holding the chamber, roll up the first utmost point ear of core and extend to the installation cavity and with utmost point post electric connection. The button cell provided by the utility model can improve the utilization rate of the internal space of the shell and the cell capacity.

Description

Button cell

Technical Field

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

Background

Some current button cells, the through-hole has been seted up on its battery apron, the through-hole is worn to locate by utmost point post, utmost point post one end extends and is provided with the flange, utmost point post other end cartridge has the clamp plate, so the lateral wall of through-hole can block between flange and clamp plate to can realize the installation of utmost point post, nevertheless this kind of mounting means, inside partly being located the casing of battery that will make utmost point post, occupied battery inner space, it is little to cause the inside usable space of battery, and then the book core that leads to casing internally mounted is small, capacious.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a button cell, which can improve the utilization rate of the internal space of a shell and the capacity of the cell.

The button cell comprises a shell, a cover body, a pole and a winding core. The shell is provided with an accommodating cavity and a first opening, and the first opening is communicated with the accommodating cavity; the cover body covers the first opening, a bulge is arranged on the cover body in an outward extending mode, an installation cavity communicated with the accommodating cavity is formed in the bulge, and a second opening communicated with the installation cavity is formed in one end, far away from the accommodating cavity, of the bulge; the pole is arranged in the mounting cavity, and an insulating sealing colloid is arranged between the pole and the cover body; roll up the core set up in hold the chamber, roll up the first utmost point ear of core and extend to the installation cavity and with utmost point post electric connection.

The button cell provided by the embodiment of the utility model at least has the following beneficial effects: the lid extends outwards and sets up the arch, sets up the installation cavity in the arch, and utmost point post can be installed in the installation cavity, and then, utmost point post orientation holds the one end in chamber can not protrusion in the lid and stretch into and hold the intracavity, so, utmost point post can not occupy the inside space of casing, and it is bigger to hold the roll core volume that the chamber can be installed to improve casing inner space utilization, improve battery capacity.

According to some embodiments of the utility model, the protrusion is located at or near an edge of the cover.

According to some embodiments of the utility model, a protection circuit board is arranged on the outer side surface of the cover body, and the protection circuit board is electrically connected with the pole; wherein the protection circuit board is positioned on one side of the bulge; or, the edge of the protection circuit board or a position close to the edge of the protection circuit board is provided with an avoiding opening, and the bulge is inserted into the avoiding opening.

According to some embodiments of the utility model, at least one snap ring extends inwards from the inner wall of the mounting cavity, at least one annular clamping groove is formed in the pole along the circumferential direction of the pole, the width of a notch of the annular clamping groove is larger than the thickness of the snap ring, and the notch of the clamping groove is opposite to the snap ring; the diameter of the pole column in the mounting cavity is equal to or smaller than the inner diameter of the clamping ring, and the sealing colloid is arranged in a gap between the pole column and the cover body.

According to some embodiments of the utility model, the clamping ring is provided with one, the clamping groove is provided with one, the side wall of the clamping groove is provided with a groove, and a part of the sealing colloid is arranged in the groove.

According to some embodiments of the utility model, a pressing plate is disposed on a side of the protrusion away from the accommodating cavity, the pressing plate is connected to the pole, and a part of the sealing colloid is located between the pressing plate and the protrusion.

According to some embodiments of the utility model, an insulating sheet is arranged between the winding core and the cover body, and an insulating sheet is arranged between the winding core and the bottom wall of the accommodating cavity.

According to some embodiments of the utility model, the second tab of the winding core is electrically connected to the cover or the shell.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a button cell according to an embodiment of the utility model;

FIG. 2 is a schematic view of a button cell (with a protective circuit board) shown in FIG. 1;

fig. 3 is an internal schematic view of a button cell shown in fig. 2;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is an exploded view of a button cell shown in fig. 2;

fig. 6 is a schematic view of a button cell (when the protection circuit board is located on one side of the bump) shown in fig. 1.

Reference numerals:

the sealing structure comprises a shell 110, an accommodating cavity 111, a first opening 112, a cover body 120, a protrusion 121, a mounting cavity 122, a clamping ring 123, a second opening 124, a pole column 130, an annular clamping groove 131, a groove 132, a pressing plate 133, a winding core 140, a first pole lug 141, a second pole lug 142, a sealing colloid 150, an insulating sheet 160, a protection circuit board 200 and an avoiding opening 210.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, 3 and 4, a button cell according to an embodiment of the present invention includes a case 110, a cover 120, a terminal 130 and a winding core 140. The housing 110 is provided with an accommodating chamber 111 and a first opening 112, the first opening 112 communicating with the accommodating chamber 111; the cover body 120 is covered on the first opening 112, a bulge 121 extends outwards from the cover body 120, and an installation cavity 122 communicated with the accommodating cavity 111 is arranged in the bulge 121; the pole 130 is arranged in the mounting cavity 122, and an insulating sealing colloid 150 is arranged between the pole 130 and the cover body 120; the winding core 140 is disposed in the accommodating cavity 111, and a first tab 141 of the winding core 140 extends to the mounting cavity 122 and is electrically connected to the pole 130. Through the above arrangement, the pole column 130 can be installed in the installation cavity 122, the end of the pole column 130 facing the accommodating cavity 111 can not protrude out of the cover body 120 and extend into the accommodating cavity 111, so that the pole column 130 can not occupy the space inside the shell 110, and the volume of the winding core 140 which can be installed in the accommodating cavity 111 is larger, so that the internal space utilization rate of the shell 110 is improved, and the battery capacity is improved. In addition, the arrangement of the protrusion 121 provides a mounting space for the terminal 130, i.e., the mounting cavity 122, so that the terminal 130 is more firmly mounted, the thickness of the cover 120 does not need to be additionally increased, the thickness of the cover 120 is smaller, the occupied space of the cover 120 is smaller, and therefore, in the production process, under the condition that the size and the specification of the button cell are not changed, the volume of the winding core 140 in which the cell is arranged is larger, and the cell capacity is increased.

It is conceivable that a second opening 124 communicating with the mounting cavity 122 is formed at an end of the protrusion away from the accommodating cavity 111, so that when the button cell is mounted on an electronic product such as an earphone or an electronic watch, the electrical connector between the button cell and the electronic product can be electrically connected with the post 130 through the second opening 124.

In a specific implementation process, the protrusion 121 may be located at a middle position of the cover 120, or at an edge of the cover 120 or a position close to the edge of the cover 120.

Referring to fig. 1 and 2, it is conceivable that, in some embodiments, when the protrusion 121 is located at the edge of the cover 120 or near the edge of the cover 120, the protrusion 121 may avoid the middle area of the cover 120, so that when the button battery needs to be provided with an accessory, the accessory may be located on one side of the protrusion 121, and the protrusion 121 has a small influence on the installation of the accessory. In addition, the thickness range of the accessory and the height range of the protrusion 121 can be overlapped, thereby reducing the required space size of the electronic product for assembling the button cell. The type of the accessory may be determined according to actual needs, and may be the protection circuit board 200, a fixing plate, or other components. In a specific implementation process, the accessory can be mounted on the cover 120 of the button cell, or the accessory can be mounted on the electronic product first.

Referring to fig. 2 and 3, it is conceivable that, in some embodiments, a protection circuit board 200 is disposed on an outer side surface of the cover 120, and the protection circuit board 200 is electrically connected to the pole 130. Since the protrusion 121 is located at the edge of the cover 120 or a position close to the edge of the cover 120, the arrangement of the protrusion 121 has little influence on the mounting of the protection circuit board 200 and the layout of the electronic devices on the protection circuit board 200, and specifically, referring to fig. 6, the protection circuit board 200 may be located at one side of the protrusion 121; alternatively, referring to fig. 2 and 5, an escape opening 210 may be provided at or near an edge of the protection circuit board 200, and the protrusion 121 is inserted into the escape opening 210. Before being electrically connected with electronic products such as earphones or electronic watches, the button cell can be connected with the protection circuit board 200, and the electronic products can be well electrically connected with the pole 130 through the protection circuit board 200. It should be noted that, in the specific implementation process, the protection circuit board 200 may also be mounted on the electronic product first, and then the button battery is mounted on the protection circuit board 200, because the protrusion 121 of the button battery is located at the edge of the cover 120 or a position close to the edge of the cover 120, the protrusion 121 can be located at one side of the protection circuit board 200 or the edge of the protection circuit board 200, so as to reduce the influence of the protrusion 121 on the protection circuit board 200.

Referring to fig. 3 and 4, it is conceivable that, in some embodiments, at least one snap ring 123 is disposed on an inner wall of the mounting cavity 122 in an inward extending manner, the pole 130 is provided with at least one annular snap groove 131 along a circumferential direction thereof, a width of a notch of the annular snap groove 131 is greater than a thickness of the snap ring 123, the notch of the snap groove 131 is opposite to the snap ring 123, and thus, a gap exists between the snap ring 123 and the annular snap groove 131; the pole 130 in the mounting cavity 122 has a diameter equal to or smaller than the inner diameter of the snap ring 123, and the sealing compound 150 is disposed in the gap between the pole 130 and the cover 120. The sealing colloid 150 may be formed by pouring glue into the gap between the pole 130 and the cover 120. Through the arrangement of the clamping ring 123, the annular clamping groove 131 and the sealing colloid 150, the sealing colloid 150 between the clamping ring 123 and the side wall of the annular clamping groove 131 can form a buckle structure, so that the pole 130 is firmly fixed in the mounting cavity 122, the sealing performance between the pole 130 and the cover body 120 can be improved, and the leakage of the button cell is effectively avoided.

Referring to fig. 3 and 4, it is conceivable that in some embodiments, one snap ring 123 is provided, and one ring-shaped snap groove 131 is provided, in which case, a groove 132 may be provided on a side wall of the ring-shaped snap groove 131, and a portion of the sealing colloid 150 is provided in the groove 132, so that the sealing performance between the pole 130 and the cover 120 may be improved.

It should be noted that, in some embodiments, the number of the snap rings 123 may also be two or more, at this time, one ring slot 131 may be provided, and all the snap rings 123 correspond to the notches of the ring slots 131, or the number of the ring slots 131 may also be two or more, and all the snap rings 123 are provided in one-to-one correspondence with all the ring slots 131.

With reference to fig. 3 to 5, it is conceivable that, in some embodiments, the side of the protrusion 121 remote from the receiving cavity 111 is provided with a pressure plate 133, the pressure plate 133 being connected with the pole 130. A part of the sealing colloid 150 is located between the pressing plate 133 and the protrusion 121, so that the sealing performance between the post 130 and the cover 120 can be further improved. The pressing plate 133 and the post 130 may be integrally formed, or the pressing plate and the post may be separately formed and then connected together by welding or bonding. The setting of clamp plate 133 can increase the area that utmost point post 130 is used for with external electric connection to can avoid appearing utmost point post 130 and be pressed into the condition in holding chamber 111.

Referring to fig. 3 and 6, it is conceivable that, in some embodiments, an insulating sheet 160 is disposed between the winding core 140 and the cover 120, and an insulating sheet 160 is disposed between the winding core 140 and the bottom wall of the accommodating cavity 111, so that the short circuit of the winding core 140 is avoided by the arrangement of the insulating sheet 160.

Referring to fig. 3 and 5, it is envisioned that in some embodiments, the second tab 142 of the core 140 is electrically connected to the cover 120 or the housing 110. The first tab 141 of the winding core 140 may be a positive electrode or a negative electrode of the winding core 140, and the second tab 142 of the winding core 140 is a negative electrode or a positive electrode of the winding core 140. In a specific implementation process, the protection circuit board 200 may be electrically connected to the cover 120 or the housing 110.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiment has been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A button cell, comprising:

a housing (110), the housing (110) being provided with an accommodation chamber (111) and a first opening (112), the first opening (112) being in communication with the accommodation chamber (111);

the cover body (120) is covered on the first opening (112), a bulge (121) extends outwards from the cover body (120), an installation cavity (122) communicated with the accommodating cavity (111) is arranged in the bulge (121), and a second opening (124) communicated with the installation cavity (122) is formed in one end, far away from the accommodating cavity (111), of the bulge;

the pole column (130) is arranged in the mounting cavity (122), and an insulating sealing colloid (150) is arranged between the pole column (130) and the cover body (120);

roll up core (140), set up in hold chamber (111), first utmost point ear (141) of rolling up core (140) extend to installation cavity (122) and with utmost point post (130) electric connection.

2. Button cell according to claim 1, characterised in that the protrusion (121) is located at or close to the edge of the cover (120).

3. A button cell according to claim 2, wherein:

a protective circuit board (200) is arranged on the outer side surface of the cover body (120), and the protective circuit board (200) is electrically connected with the pole (130);

wherein the protection circuit board (200) is located on the side of the protrusion (121); or

An avoiding opening (210) is formed in the edge of the protection circuit board (200) or the position close to the edge of the protection circuit board, and the bulge (121) is inserted into the avoiding opening (210).

4. Button cell according to claim 1, characterised in that:

the inner wall of the mounting cavity (122) extends inwards to form at least one clamping ring (123), the pole (130) is provided with at least one annular clamping groove (131) along the circumferential direction of the pole, the width of a notch of the annular clamping groove (131) is larger than the thickness of the clamping ring (123), and the notch of the clamping groove (131) is opposite to the clamping ring (123);

the diameter of the pole (130) in the installation cavity (122) is equal to or smaller than the inner diameter of the clamping ring (123), and the sealing colloid (150) is arranged in a gap between the pole (130) and the cover body (120).

5. Button cell according to claim 4, wherein one snap ring (123) is provided, one snap groove (131) is provided, a groove (132) is provided on the side wall of the snap groove (131), and a part of the sealing gel (150) is provided in the groove (132).

6. Button cell according to claim 4 or 5, characterised in that a pressure plate (133) is arranged on the side of the protrusion (121) facing away from the receiving cavity (111), the pressure plate (133) is connected to the pole (130), and a part of the sealing compound (150) is located between the pressure plate (133) and the protrusion (121).

7. Button cell according to claim 1, characterised in that an insulating sheet (160) is arranged between the winding core (140) and the cover (120), and an insulating sheet (160) is arranged between the winding core (140) and the bottom wall of the receiving chamber (111).

8. Button cell according to claim 1, characterised in that the second tab (142) of the winding core (140) is electrically connected to the cover (120) or the housing (110).