CN211404539U

CN211404539U - Shell assembly of button cell, button cell and electronic product

Info

Publication number: CN211404539U
Application number: CN202020431068.6U
Authority: CN
Inventors: 彭宁; 谢斌
Original assignee: Zhuhai Cosmx Battery Co Ltd
Current assignee: Zhuhai Cosmx Battery Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-09-01
Anticipated expiration: 2030-03-30

Abstract

The utility model provides a shell subassembly of button cell, button cell and electronic product, this shell subassembly of button cell includes the shell, and the shell includes first conductive part and the second conductive part of mutual insulation, and first conductive part and second conductive part enclose into the holding chamber that is used for holding button cell's electric core, and electric core has first utmost point ear and second utmost point ear, and first utmost point ear is connected with first conductive part electricity, and second utmost point ear is connected with second conductive part electricity; the first conductive part is provided with two opposite end faces and a side face located between the two end faces, and at least part of at least one end face protrudes towards the direction far away from the battery core to form at least two convex parts so as to increase the internal space of the shell component of the button cell and be beneficial to improving the performance of the button cell.

Description

Shell assembly of button cell, button cell and electronic product

Technical Field

The utility model relates to a battery technology field especially relates to a shell subassembly, button cell and electronic product of button cell.

Background

Button cells, which are cells having an overall size similar to a button, are generally large in diameter and thin in thickness. Button cells are classified into chemical cells and physical cells, wherein the chemical cells are most commonly used and mainly comprise an anode, a cathode and an electrolyte thereof.

Button cells, because of their small size, find widespread use in a variety of miniature electronic products, such as: computer motherboard, electronic watch, electronic dictionary, electronic scale, remote controller, electric toy, cardiac pacemaker, electronic hearing aid, counter, camera, etc. The performance of the button cells is also receiving increasing attention in order to ensure the performance of the products equipped with them.

However, the performance of the current button cell is relatively limited, and therefore, how to improve the performance of the button cell has become a general concern for designers.

SUMMERY OF THE UTILITY MODEL

The utility model provides a shell subassembly, button cell and electronic product of button cell, this button cell's shell subassembly's inner space is bigger, is favorable to promoting button cell's performance.

In a first aspect, the present invention provides a housing assembly for a button cell, including a housing, the housing includes a first conductive part and a second conductive part insulated from each other, the first conductive part and the second conductive part enclose a holding cavity for holding an electric core of the button cell, the electric core has a first tab and a second tab, the first tab is electrically connected to the first conductive part, and the second tab is electrically connected to the second conductive part; the first conductive part is provided with two end faces which are arranged oppositely and a side face which is positioned between the two end faces, and at least part of at least one end face protrudes towards the direction far away from the battery cell to form at least two convex parts.

The utility model discloses a shell subassembly of button cell battery includes the shell, the shell includes first conductive part and the second conductive part of mutual insulation, first conductive part and second conductive part enclose into the holding chamber that is used for holding button cell battery's electric core, the electric core has first utmost point ear and second utmost point ear, through making first utmost point ear be connected with first conductive part electricity, make second utmost point ear be connected with second conductive part electricity, thereby make the electric core can be through first conductive part and second conductive part to export electric energy outward or make the electric core can receive the electric energy of external input through first conductive part and second conductive part; simultaneously, first conductive part has two terminal surfaces of relative setting and is located the side between two terminal surfaces, through making at least part of at least one terminal surface towards the direction protrusion formation two at least convex parts of keeping away from electric core, thereby can increase button cell's shell subassembly inner space, and, the terminal surface protrusion through the shell forms the increased space of convex part, can be used for storing electrolyte on the one hand, with the capacity of the inside electrolyte of increase button cell, thereby promote button cell's circulation performance, on the other hand, also can be used for holding the partial structure in the electric core, for example: the tab or a part of the tab is used for increasing the space in which the battery cell can be accommodated in the shell component of the button cell, so that the performance of the button cell can be improved.

The casing component of a button cell as described above, optionally, at least two of the protrusions are arranged continuously within the end face; and/or at least two convex parts are arranged at intervals in the end face.

The housing component of a button cell as described above, optionally, at least two of the protrusions are arranged in a stack normal to the end face.

The shell component of the button cell battery is characterized in that the surface of the convex part is a curved surface; and/or the surface of the convex part is formed by plane splicing; and/or the surface of the convex part is formed by jointly splicing a curved surface and a plane.

Optionally, the first conductive part is a closed metal shell, and the second conductive part is a conductive nail; the shell is provided with a through hole penetrating through the shell, the conductive nail penetrates through the through hole, the conductive nail and the inner wall of the through hole are arranged in a sealing and insulating mode, and flanges lapped with the shell are arranged at the top end and/or the bottom end of the conductive nail.

Optionally, the first conductive part is a closed metal shell, and the second conductive part is a conductive sheet; the shell is provided with a through hole penetrating through the shell, the conducting strip is arranged on one side, close to the battery core, of the through hole in a blocking mode, the conducting strip and the shell are sealed and insulated through an insulating sealing element, and a protruding portion inserted into the insulating sealing element is arranged in the circumferential direction of the conducting strip.

The shell component of the button cell battery is characterized in that the through hole penetrates through the inner surface and the outer surface of one of the convex parts; and/or at least part of the first pole lug and/or at least part of the second pole lug are positioned in the space defined by the convex part.

The housing assembly of a button cell battery as described above, optionally, the housing comprises an upper housing and a bottom cover, and the upper housing and the bottom cover are a single piece.

In a second aspect, the present invention provides a button cell battery, which comprises an electric core and a casing assembly of the button cell battery as described above.

The utility model discloses a button cell includes electric core and button cell's shell subassembly, wherein, button cell's shell subassembly includes the shell, the shell includes first conductive part and the second conductive part of mutual insulation, first conductive part and second conductive part enclose the holding chamber that becomes to be used for holding button cell's electric core, the electric core has first utmost point ear and second utmost point ear, through making first utmost point ear and first conductive part electricity be connected, make second utmost point ear and second conductive part electricity be connected, thereby make electric core can be through first conductive part and second conductive part to export electric energy or make electric core can receive the electric energy of external input through first conductive part and second conductive part; simultaneously, first conductive part has two terminal surfaces of relative setting and is located the side between two terminal surfaces, through making at least part of at least one terminal surface towards the direction protrusion formation two at least convex parts of keeping away from electric core, thereby can increase button cell's shell subassembly inner space, and, the terminal surface protrusion through the shell forms the increased space of convex part, can be used for storing electrolyte on the one hand, with the capacity of the inside electrolyte of increase button cell, thereby promote button cell's circulation performance, on the other hand, also can be used for holding the partial structure in the electric core, for example: the tab or a part of the tab is used for increasing the space in which the battery cell can be accommodated in the shell component of the button cell, so that the performance of the button cell can be improved.

In a third aspect, the present invention provides an electronic product, including the button cell battery as described above.

The utility model discloses an electronic product includes button cell, button cell includes electric core and button cell's shell subassembly, wherein, button cell's shell subassembly includes the shell, the shell includes first conductive part and the second conductive part of mutual insulation, first conductive part and second conductive part enclose into the holding chamber that is used for holding button cell's electric core, electric core has first utmost point ear and second utmost point ear, through making first utmost point ear and first conductive part electricity be connected, make second utmost point ear and second conductive part electricity be connected, thereby make electric core can be through first conductive part and second conductive part export electric energy outwards or make electric core can receive the electric energy of external input through first conductive part and second conductive part; simultaneously, first conductive part has two terminal surfaces of relative setting and is located the side between two terminal surfaces, through making at least part of at least one terminal surface towards the direction protrusion formation two at least convex parts of keeping away from electric core, thereby can increase button cell's shell subassembly inner space, and, the terminal surface protrusion through the shell forms the increased space of convex part, can be used for storing electrolyte on the one hand, with the capacity of the inside electrolyte of increase button cell, thereby promote button cell's circulation performance, on the other hand, also can be used for holding the partial structure in the electric core, for example: the tab or a part of the tab is used for increasing the space in which the battery cell can be accommodated in the shell component of the button cell, so that the performance of the button cell can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a first cross-sectional view of a button cell provided in an embodiment of the present invention;

fig. 2 is a top view of the button cell of fig. 1;

fig. 3 is a second cross-sectional view of a button cell provided in an embodiment of the present invention;

fig. 4 is a top view of the button cell of fig. 3;

fig. 5 is a third cross-sectional view of a button cell provided in an embodiment of the present invention;

fig. 6 is a top view of the button cell of fig. 5;

fig. 7 is a fourth cross-sectional view of a button cell provided in an embodiment of the present invention;

fig. 8 is a top view of the button cell of fig. 7.

Description of reference numerals:

1-a housing;

11-a first conductive portion;

111-an upper shell;

1111-convex part;

112-a bottom cover;

12-a second conductive portion;

13-an insulating rubber ring;

and 2-electric core.

Detailed Description

With the development of science and technology, electronic products are more and more introduced into the aspects of people's life, but the normal use of electronic products is unable to leave the battery, wherein, button cell has also obtained extensive application in the electronic product in each field because of its small volume. The inside of the button cell contains electrolyte, and the electrolyte can continuously generate oxidation and reduction reactions on the positive electrode and the negative electrode in the working process of the button cell, so if the capacity of the electrolyte in the button cell is too small, on one hand, the cycle performance of the cell can be reduced, and on the other hand, part of active substances cannot be infiltrated, which is not beneficial to the exertion of the capacity of the button cell.

Because two terminal surfaces of prior art's button cell's shell are the plane to lead to button cell's inner space to be smaller, promptly, the inside electrolyte that can inject of button cell's capacity is less on the one hand, and button cell's cycle performance is lower, and the inside space that can hold the electric core of button cell is smaller on the other hand, is unfavorable for promoting button cell's performance.

In order to solve the technical problem, the utility model provides a shell subassembly of button cell, this shell subassembly of button cell forms the inner space of two at least convex parts in order to increase button cell through the direction protrusion that makes the at least part orientation of at least one terminal surface of shell keep away from electric core to can increase the inside electrolyte's of button cell capacity or increase the inside space that can hold electric core of button cell, and then be favorable to promoting button cell's performance.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Fig. 1 is a first cross-sectional view of a button cell provided in an embodiment of the present invention; fig. 2 is a top view of the button cell of fig. 1; fig. 3 is a second cross-sectional view of a button cell provided in an embodiment of the present invention; fig. 4 is a top view of the button cell of fig. 3; fig. 5 is a third cross-sectional view of a button cell provided in an embodiment of the present invention; fig. 6 is a top view of the button cell of fig. 5; fig. 7 is a fourth cross-sectional view of a button cell provided in an embodiment of the present invention; fig. 8 is a top view of the button cell of fig. 7.

As shown in fig. 1 to 8, the present embodiment provides a housing assembly of a button cell, the housing assembly of the button cell includes a housing 1, the housing 1 includes a first conductive portion 11 and a second conductive portion 12 insulated from each other, the first conductive portion 11 and the second conductive portion 12 enclose a receiving cavity for receiving a cell 2 of the button cell, the cell 2 has a first tab and a second tab (not shown in the figure), the first tab is electrically connected to the first conductive portion 11, the second tab is electrically connected to the second conductive portion 12, therefore, the electric energy generated on the battery cell 2 can be transmitted to the outside through the first conductive part 11 and the second conductive part 12 to provide electric energy for the external electric equipment, alternatively, when the button cell is a rechargeable button cell and the external charging device charges, the electric energy provided by the charging device to the button cell can be transmitted to the battery cell 2 through the first conductive part 11 and the second conductive part 12.

The first conductive part 11 has two end faces arranged oppositely, at least part of at least one end face protrudes towards a direction away from the battery cell 2 to form at least two protrusions 1111, and a space defined by the at least two protrusions 1111 can increase the volume of an accommodating cavity enclosed by the first conductive part 11 and the second conductive part 12. Since both end faces of the case of the button cell in the prior art are flat, the volume of the receiving cavity surrounded by the case 1 of the button cell of the present embodiment is larger than the volume of the receiving cavity surrounded by the case of the button cell in the prior art by about the volume of the space swept by at least a portion of at least one end face when protruding from a flat state to form at least two protrusions 1111.

Specifically, at least two protrusions 1111 may be formed by protruding a part or all of only one end surface of the two end surfaces of the first conductive part 11, or at least two protrusions 1111 may be formed by protruding a part or all of each end surface of the two end surfaces.

Preferably, the battery cell 2 may be a winding battery cell, and specifically, the winding battery cell includes a first pole piece, a second pole piece, and a diaphragm separating the first pole piece from the second pole piece; the first pole piece is provided with a first pole lug which can be arranged on the first pole piece in a welding mode, the second pole piece is provided with a second pole lug which can be arranged on the second pole piece in a welding mode; and in the winding process, the first pole piece, the second pole piece and the diaphragm are wound layer by layer from the winding head end to the same direction, and finally the winding type battery cell is formed.

It can be understood that the first pole piece of the battery cell 2 may be a positive pole piece, the second pole piece may be a negative pole piece, at this time, the first tab disposed on the first pole piece is a positive tab, and the second tab disposed on the second pole piece is a negative tab, in a specific implementation, the battery cell 2 is accommodated in the accommodating cavity of the housing 1, the positive tab is electrically connected to the first conductive portion 11 so that the first conductive portion 11 forms a positive pole of the button battery, and the negative tab is electrically connected to the second conductive portion 12 so that the second conductive portion 12 forms a negative pole of the button battery, when the button battery is applied to an electronic product, the first conductive portion 11 is connected to the positive pole of the electronic product, and the second conductive portion 12 is connected to the negative pole of the electronic product, so as to supply power to the electronic product.

Or, the first pole piece of the battery cell 2 may be a negative pole piece, and the second pole piece may be a positive pole piece, at this time, the first pole tab disposed on the first pole piece is a negative pole tab, and the second pole tab disposed on the second pole piece is a positive pole tab, in a specific implementation, the battery cell 2 is accommodated in the accommodating cavity of the housing 1, the negative pole tab is electrically connected to the first conductive part 11 so that the first conductive part 11 forms a negative pole of the button cell, and the positive pole tab is electrically connected to the second conductive part 12 so that the second conductive part 12 forms a positive pole of the button cell.

In other embodiments, the battery cell may also be a laminated battery cell or other types of battery cells, which are not listed here.

During specific implementation, the winding type battery cell is located in the accommodating cavity enclosed by the first conductive part 11 and the second conductive part 12, one of the end faces of the first conductive part 11 protrudes towards the direction far away from the battery cell to form two protrusions 1111, the two protrusions 1111 can be arranged on the end face of the first conductive part 11 in parallel, and can also be overlapped with each other, one protrusion 1111 can also be enclosed in the periphery of the other protrusion 1111, so that the internal space of the housing component of the button battery can be increased, so that the capacity of electrolyte inside the button battery can be increased, the cycle performance of the button battery can be improved, and the space defined by the protrusions 1111 can also be used for accommodating the partial structure of the battery cell 2, so that the space inside the button battery can be used for accommodating the battery cell 2, and the performance of the button battery can be improved.

The housing assembly of the button cell battery of this embodiment includes a housing 1, the housing 1 includes a first conductive part 11 and a second conductive part 12 which are insulated from each other, the first conductive part 11 and the second conductive part 12 enclose an accommodating cavity for accommodating a cell 2 of the button cell battery, the cell 2 has a first tab and a second tab, and the second tab is electrically connected to the second conductive part 12 by electrically connecting the first tab to the first conductive part 11, so that the cell 2 can output electric energy to the outside through the first conductive part 11 and the second conductive part 12 or the cell 2 can receive electric energy input from the outside through the first conductive part 11 and the second conductive part 12; meanwhile, the first conductive part 11 has two end faces oppositely arranged and a side face located between the two end faces, at least two convex parts 1111 are formed by protruding at least part of at least one end face towards a direction far away from the battery cell 2, so that the internal space of the case assembly of the button cell battery can be increased, and the space increased by the convex parts is formed by protruding the end face of the case 1, on one hand, the conductive part can be used for storing electrolyte, so as to increase the capacity of the electrolyte inside the button cell battery, thereby improving the cycle performance of the button cell battery, on the other hand, the conductive part can also be used for accommodating part of the structure in the battery cell 2, for: the tab or a part of the tab is used for increasing the space in which the battery cell can be accommodated in the shell component of the button cell, so that the performance of the button cell can be improved.

Specifically, at least a part of at least one end surface protrudes in a direction away from the battery cell 2 to form at least two protrusions 1111, and the arrangement of the at least two protrusions 1111 on the end surface includes but is not limited to the following three possible implementation manners:

referring to fig. 1 to 4, a first possible implementation manner is: at least two protrusions 1111 are continuously arranged in the end surface. For example, there may be two convex portions 1111, two convex portions 1111 may occupy half of the area of the end surface, and two convex portions 1111 may be adjacent to each other; for another example, there may be three convex portions 1111, one convex portion 1111 may be a circular convex portion and located at the center of the end surface, the other two convex portions 1111 may be annular convex portions and sequentially arranged around the periphery of the circular convex portion, and the adjacent two convex portions 1111 are adjacent to each other; for another example, there may be four convex portions 1111, the end surface where the convex portions are located may be circular, the four convex portions 1111 may be continuously arranged in the circular end surface along the circumferential direction, or the four convex portions 1111 may be continuously arranged in the circular end surface along the radial direction, or the four convex portions 1111 may be arranged in two rows and two columns in the circular end surface, and the four convex portions 1111 are adjacent to each other. In addition, the shape of the convex 1111 may be adjusted according to the number, arrangement, and the like of the convex 1111, and is not particularly limited herein.

Referring to fig. 5 and fig. 6, a second possible implementation manner is: at least two projections 1111 are spaced apart in the end surface. For example, there may be two convex portions 1111, the two convex portions 1111 may be disposed at different positions of the end surface according to actual needs, and there is a space between the two convex portions 1111; for another example, there may be three convex portions 1111, one convex portion 1111 may be a circular convex portion and located at the center of the end surface, the other two convex portions 1111 may be annular convex portions and sequentially arranged around the periphery of the circular convex portion, and there is a space between the two adjacent convex portions 1111; for another example, there may be four convex portions 1111, the end surface where the convex portions are located may be circular, the four convex portions 1111 may be arranged at intervals in the circumferential direction in the circular end surface, or the four convex portions 1111 may be arranged at intervals in the radial direction in the circular end surface, or the four convex portions 1111 may be arranged in two rows and two columns in the circular end surface, and the four convex portions 1111 are spaced apart from each other. In addition, the shape of the convex 1111 may be adjusted according to the number, arrangement, and the like of the convex 1111, and is not particularly limited herein.

Referring to fig. 7 and 8, a third possible implementation manner is: at least two convex portions 1111 are arranged in a stacked manner in a normal direction of the end surface. For example, the number of the convex portions 1111 may be two, wherein a first convex portion may be formed by protruding a part or all of the end surface in a direction away from the battery cell 2, and a second convex portion may be formed by protruding a part of the surface of the first convex portion in a direction away from the battery cell 2. Further, the shape of the convex portion 1111 may be adjusted according to actual needs, and is not particularly limited herein.

It should be noted that the above three implementations can be used in combination of two or three without conflict.

Further, at least a part of at least one end surface protrudes away from the battery cell 2 to form at least two protrusions 1111, and specific implementations of the surfaces of the protrusions 1111 include, but are not limited to, the following three possible implementations: in a first possible implementation manner, referring to fig. 1 and fig. 2, the surface of the protrusion 1111 is a curved surface, and specifically, the surface of the protrusion 1111 may be formed by a continuous curved surface or formed by splicing curved surfaces; a second possible implementation manner, as shown in fig. 3 and 4, the surface of the convex portion 1111 is formed by plane splicing, and a specific splicing manner thereof may be set according to actual needs, which is not described herein again; in a third possible implementation manner, as shown in fig. 5 to 8, the surface of the protrusion 1111 may also be formed by jointly splicing a curved surface and a flat surface, and the specific splicing manner may be set according to actual needs, which is not described herein again.

Referring to fig. 1, 3, 5 and 7, a preferred implementation is as follows: the first conductive part 11 of button cell's shell subassembly can be for the confined metal casing, second conductive part 12 can be for electrically conductive nail, and is concrete, set up the through-hole that runs through the casing on the casing, electrically conductive nail wears to establish in the through-hole, and electrically conductive nail and the inner wall of through-hole are sealed and insulating the setting, and simultaneously, in order to can be better fix electrically conductive nail in through-hole department and make to form more reliable sealed between electrically conductive nail and the casing, can be in the top of electrically conductive nail and the at least one end setting in the bottom with casing lapped turn-ups. In addition, can seal and insulating the setting through the insulating part between the inner wall of electrically conductive nail and through-hole, wherein, the insulating part can be insulating rubber ring 13, and insulating rubber ring 13 not only can make electrically conductive nail and through-hole between the inner wall insulating, can play the effect in the space between the inner wall of sealed electrically conductive nail and through-hole moreover.

During concrete implementation, put into electric core 2 the holding intracavity of button cell's shell subassembly, first utmost point ear can be connected with the optional position electricity of casing according to actual need, and the second utmost point ear can be connected with the part electricity that stretches into the through-hole inboard of electrically conductive nail.

In other implementation manners, the first conductive part of the casing component of the button cell can be a closed metal casing, the second conductive part can be a conductive sheet, concretely, a through hole penetrating through the casing is formed in the casing, the conductive sheet is blocked and arranged on one side, close to the battery core, of the through hole, the conductive sheet and the casing are sealed and insulated through an insulating sealing element, meanwhile, the circumferential direction of the conductive sheet is provided with a protruding part inserted into the insulating sealing element, so that the conductive sheet can be better fixed in the inner side of the through hole, and reliable sealing can be formed between the conductive sheet and the casing.

The through-hole that sets up electrically conductive nail or conducting strip can be seted up on the convex surface of one of them convex part 1111 and run through the interior external surface of this convex surface to the part that is located the through-hole inboard that makes electrically conductive nail can be located the space that convex part 1111 injectd, perhaps, the conducting strip that makes to be located the through-hole inboard and the sealed insulating part can be located the space that convex part 1111 injectd, thereby makes electrically conductive nail or conducting strip can not interfere the space at electricity core 2 place, and then is favorable to promoting button cell's performance.

In other implementation manners, the through hole provided with the conductive nail or the conductive sheet may also be opened at other positions of the first conductive part 11, for example, the side surface of the first conductive part 11, or other positions of the end surface of the first conductive part 11, at this time, the space defined by the protrusion 1111 may be used to store the electrolyte, so as to increase the capacity of the electrolyte inside the button battery, so as to improve the cycle performance of the button battery, and on the other hand, may also be used to accommodate a partial structure in the battery core 2, so as to increase the space inside the button battery for accommodating the battery core 2

In addition, at least part of the first tab and/or at least part of the second tab may be disposed in the space defined by the protrusion 1111, so that the first tab and/or the second tab may not occupy the space of the battery cell 2 or occupy less space, thereby increasing the space for accommodating the battery cell 2 inside the button battery, and further facilitating the improvement of the performance of the button battery.

It can be understood that the portion of the conductive nail inside the through hole and at least part of the first tab and/or at least part of the second tab may be located in the space defined by the protrusion 1111, or the conductive sheet inside the through hole and at least part of the first tab and/or at least part of the second tab may be located in the space defined by the protrusion 1111, so as to reduce the space occupied inside the button cell for accommodating the battery cell 2, thereby facilitating the improvement of the performance of the button cell.

Referring to fig. 1, 3, 5 and 7, the housing of the present embodiment includes an upper housing 111 and a bottom cover 112, and the upper housing 111 and the bottom cover 112 may be a single piece. Specifically, the upper case 111 may have a semi-enclosed structure with an opening at one end, and the bottom cover 112 may have a planar structure covering the opening of the upper case 111. The upper shell 111 and the bottom cover 112 are an integral piece, which means that the upper shell 111 and the bottom cover 112 are not detachable, that is, the upper shell 111 and the bottom cover 112 can be simultaneously processed and formed into a whole which is not detached, or can be respectively processed and then the upper shell 111 and the bottom cover 112 are spliced into a whole which is not detached through welding or other processes, so that the sealing effect of the shell is better, the risk of liquid leakage is reduced, and the improvement of the quality and the performance of the button cell is facilitated.

Example two

The embodiment provides a button cell, which comprises a battery core and a shell component of the button cell.

The housing assembly of the button cell of this embodiment is the same as the housing assembly of the button cell provided in the first embodiment, and can bring about the same or similar technical effects, which is not described herein any more, and reference may be made to the first embodiment in particular.

EXAMPLE III

The embodiment provides an electronic product comprising a button cell.

The button cell of this embodiment is the same as the button cell provided in the second embodiment, and can bring about the same or similar technical effects, and details are not repeated herein, and reference may be made to the second embodiment.

In the description of the present invention, it is to be understood that the terms "top," "bottom," "upper," "lower" (if present), and the like, are used in the orientation or positional relationship shown in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The terms "first" and "second" in the description and claims of the present application and the description of the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The shell assembly of the button cell is characterized by comprising a shell, wherein the shell comprises a first conductive part and a second conductive part which are insulated from each other, the first conductive part and the second conductive part enclose an accommodating cavity for accommodating a cell of the button cell, the cell is provided with a first tab and a second tab, the first tab is electrically connected with the first conductive part, and the second tab is electrically connected with the second conductive part;

the first conductive part is provided with two end faces which are arranged oppositely and a side face which is positioned between the two end faces, and at least part of at least one end face protrudes towards the direction far away from the battery cell to form at least two convex parts.

2. The housing assembly of a button cell according to claim 1, characterized in that at least two of the protrusions are arranged continuously within the end face; and/or the presence of a gas in the gas,

at least two of the protrusions are spaced apart within the end face.

3. The housing assembly of a button cell according to claim 1, wherein at least two of the protrusions are stacked normal to the end face.

4. The housing assembly of a button cell battery as claimed in claim 1, wherein the surface of the protrusion is curved; and/or the presence of a gas in the gas,

the surfaces of the convex parts are formed by plane splicing; and/or the presence of a gas in the gas,

the surface of the convex part is formed by splicing a curved surface and a plane.

5. The housing assembly of a button cell battery as claimed in claim 1, wherein the first conductive part is a closed metal casing and the second conductive part is a conductive nail;

the shell is provided with a through hole penetrating through the shell, the conductive nail penetrates through the through hole, the conductive nail and the inner wall of the through hole are arranged in a sealing and insulating mode, and flanges lapped with the shell are arranged at the top end and/or the bottom end of the conductive nail.

6. The housing assembly of a button cell battery as claimed in claim 1, wherein the first conductive part is a closed metal casing and the second conductive part is a conductive sheet;

the shell is provided with a through hole penetrating through the shell, the conducting strip is arranged on one side, close to the battery core, of the through hole in a blocking mode, the conducting strip and the shell are sealed and insulated through an insulating sealing element, and a protruding portion inserted into the insulating sealing element is arranged in the circumferential direction of the conducting strip.

7. A casing assembly for button cells according to claim 5 or 6, characterized in that said through hole penetrates the inner and outer surfaces of one of said protrusions; and/or the presence of a gas in the gas,

at least part of the first pole lug and/or at least part of the second pole lug are positioned in the space defined by the convex part.

8. A housing assembly for button cells according to claim 5 or 6, characterized in that the housing comprises an upper housing and a bottom cover, the upper housing and the bottom cover being in one piece.

9. Button cell battery, characterized in that it comprises a cell and a casing assembly of a button cell battery according to any of claims 1 to 8.

10. An electronic product, characterized by comprising the button cell battery according to claim 9.