CN212434722U - Button cell and electronic equipment - Google Patents
Button cell and electronic equipment Download PDFInfo
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- CN212434722U CN212434722U CN202020996174.9U CN202020996174U CN212434722U CN 212434722 U CN212434722 U CN 212434722U CN 202020996174 U CN202020996174 U CN 202020996174U CN 212434722 U CN212434722 U CN 212434722U
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- button cell
- tab
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- top cover
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a button cell and electronic equipment, relate to battery technical field, a technical problem for it is poor to solve button cell seal effect, the assembly degree of difficulty is high, production efficiency is low, this button cell is through the through-hole of electrically conductive piece closing cap on the top cap, with top cap and electrically conductive piece through the insulating and sealed connection of sealed rubber ring together, place the holding intracavity at the drain pan with electric core, make the interior diapire of first utmost point ear on the electric core and drain pan weld, top cap and the drain pan sealing connection that will have electrically conductive piece again, and make the second utmost point ear on the electric core be connected with electrically conductive piece electricity, pour into electrolyte into to the holding intracavity from the notes liquid mouth on the electrically conductive piece at last, electrolyte pours into and accomplishes the back, will seal a closing cap on annotating the liquid mouth, and make. The utility model provides a button cell is used for improving the leakproofness.
Description
Technical Field
The utility model relates to the technical field of batteries, especially, relate to a button cell and electronic equipment.
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, because of their small size, find widespread use in a variety of miniature electronic devices, such as: the field of wearable electronic equipment, the field of medical products and the like.
Since the inside of the button cell is a sealed space, the sealing is extremely important for the button cell. However, the button cells in the prior art have poor sealability.
SUMMERY OF THE UTILITY MODEL
In view of the above, an embodiment of the present invention provides a button cell and an electronic device, which are used for improving the sealing performance.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
the utility model discloses a first aspect of the embodiment provides a button cell, and it includes: the battery comprises a shell, a battery core and a conductive piece; the shell comprises a bottom shell and a top cover, the top cover is connected with the bottom shell in a sealing mode, an accommodating cavity for accommodating the battery cell is formed by the bottom shell and the top cover in an enclosing mode, a through hole communicated with the accommodating cavity is formed in the top cover, and the conductive piece covers the through hole and is connected with the top cover in an insulating and sealing mode through a sealing rubber ring; the conductive piece is also provided with a liquid injection port for injecting electrolyte into the accommodating cavity, the liquid injection port is covered with a sealing piece, and the sealing piece is hermetically connected with the liquid injection port; the battery cell is provided with a first tab and a second tab, the first tab is abutted to the inner bottom wall of the bottom shell and is welded with the inner bottom wall of the bottom shell, and the second tab is electrically connected with the conductive piece.
In an optional implementation manner, the conductive member is provided with an extension portion penetrating through the through hole, the extension portion extends into the accommodating cavity, and the second tab is electrically connected with one end of the extension portion facing the accommodating cavity.
In an alternative embodiment, the closure is a closure spike; the liquid injection port is far away from one end of the containing cavity and is provided with a counter bore, the diameter of the counter bore is larger than that of the liquid injection port, the counter bore is communicated with the liquid injection port, and the sealing nail is positioned in the counter bore and is hermetically connected with the counter bore.
In an alternative embodiment, the sealing spike is welded to the counterbore.
In an alternative embodiment, a cell cavity is formed at the center of the cell, and the cell cavity is concentrically arranged with the casing and the liquid injection port.
In an optional embodiment, a counter bore is formed in the top cover, the conductive member is located in the counter bore, and an upper surface of the conductive member is flush with an upper surface of the top cover.
In an alternative embodiment, the housing is circular in cross-section.
In an optional embodiment, the cell is a wound cell.
In an optional embodiment, the battery pack further includes an abutting member, the abutting member is located in the battery cell cavity and is concentrically disposed with the battery cell cavity, and one end of the abutting member abuts against the first tab, so that the first tab is attached to the inner bottom wall of the bottom case.
The embodiment of the utility model provides a second aspect still provides an electronic equipment, button cell including the electronic equipment body and the first aspect provides, button cell provides the electric energy for the electronic equipment body.
The embodiment of the utility model provides a button cell and electronic equipment has following advantage:
the embodiment of the utility model provides an among the button cell, electrically conductive piece closing cap is on the through-hole of top cap, with top cap and electrically conductive piece through the insulating and sealed connection of sealing rubber ring together, place electric core in the holding intracavity of drain pan, make the interior diapire of first utmost point ear on the electric core and drain pan weld, top cap and drain pan sealing connection who will have electrically conductive piece again, and make second utmost point ear on the electric core and electrically conductive piece electricity be connected, pour into electrolyte into to the holding intracavity from the notes liquid mouth on electrically conductive piece into at last, the back is accomplished in the electrolyte injection, with the sealing piece closing cap on annotating the liquid mouth, and make the sealing piece and annotate liquid mouth sealing connection, thereby button cell's leakproofness has been improved.
In addition to the technical problems, technical features constituting technical solutions, and advantageous effects brought by the technical features of the technical solutions described above, other technical problems that can be solved by the button cell and the electronic device provided by the embodiments of the present invention, other technical features included in the technical solutions, and advantageous effects brought by the technical features will be further described in detail in the detailed description of the embodiments of the present invention.
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 creative efforts.
Fig. 1 is a schematic structural diagram of a button cell provided in an embodiment of the present invention;
fig. 2 is a schematic view of an exploded structure of a button cell according to a first embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a first structure of a button cell according to an embodiment of the present invention;
fig. 4 is a schematic view of an internal structure of a button cell according to a second structure of an embodiment of the present invention;
fig. 5 is a schematic diagram of an internal structure of a button cell according to a third structure of an embodiment of the present invention.
Description of reference numerals:
10-a housing;
101-a bottom shell;
1011-an accommodating cavity;
102-a top cover;
1021-a through hole;
1022-a receiving groove;
20-electric core;
201-a first tab;
202-a second tab;
203-cell cavity;
30-a conductive member;
301-liquid injection port;
302-a counter bore;
303-an extension;
40-a sealing member;
50-sealing rubber ring;
60-abutment member.
Detailed Description
Because button cell's inside belongs to airtight space, consequently, the leakproofness is very important to button cell, and in the correlation technique, pour into electrolyte into earlier to placing by the holding intracavity of electric core, wear to establish in the through-hole on the casing with electrically conductive piece again, make electrically conductive piece and through-hole riveting, and set up insulating seal rubber ring between electrically conductive piece and the through-hole, however, when electrically conductive piece and through-hole riveting, the casing can vibrate, the electrolyte of holding intracavity can splash to seal rubber ring department, make seal rubber ring part lose efficacy, lead to the leakproofness poor.
In order to solve the problem, the embodiment of the utility model provides an among the button cell, electrically conductive piece closing cap is on the through-hole of top cap, with top cap and electrically conductive piece through the insulating and sealed connection of sealing rubber ring together, place the holding intracavity at the drain pan with electric core, make the interior diapire of first utmost point ear on the electric core and drain pan weld, top cap and drain pan sealing connection who will have electrically conductive piece again, and make second utmost point ear on the electric core and electrically connected with electrically conductive piece, at last will have electrically conductive top cap and drain pan sealing connection again, pour into electrolyte into to the holding intracavity from annotating liquid mouth on electrically conductive piece, electrolyte pours into the completion back, will seal the closing cap on annotating the liquid mouth, and make seal the piece and annotate the liquid mouth through bonding or welded mode sealing connection, thereby button cell's leakproofness has been improved.
In order to make the above objects, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example one
As shown in fig. 1, the button cell provided by the embodiment of the present invention comprises: casing 10, be located electric core 20 in the holding chamber 1011 of casing 10 and set up on casing 10 and with casing 10 insulated connection's electrically conductive piece 30, be equipped with on the electrically conductive piece 30 and annotate liquid mouth 301 and the sealing member 40 of closing cap notes liquid mouth 301 of pouring into electrolyte into holding chamber 1011, sealing member 40 and notes liquid mouth 301 sealing connection, be equipped with first utmost point ear 201 and second utmost point ear 202 on the electric core 20, first utmost point ear 201 carries out the electricity with casing 10 through modes such as welding and is connected, second utmost point ear 202 also through welding with electrically conductive piece 30, the mode electricity that bonds is connected, casing 10 and electrically conductive piece 30 are connected with the electronic equipment electricity respectively, so that electric core 20 provides the electric energy to the electronic equipment through casing 10 and electrically conductive piece 30.
As shown in fig. 2 to 4, the casing 10 includes a bottom casing 101 and a top cover 102, a groove extending toward a bottom wall of the bottom casing 101 is formed on the bottom casing 101, the groove forms an accommodating cavity 1011 for accommodating the battery cell 20, and the top cover 102 covers an opening communicating with the accommodating cavity 1011, so that the bottom casing 101 and the top cover 102 enclose the casing 10 having the accommodating cavity 1011. In order to improve the sealing performance, the top cover 102 and the bottom case 101 are hermetically connected, for example, the top cover 102 and the bottom case 101 are welded.
The shape of the cross section of the housing 10 may be any shape such as a circle, an ellipse, a polygon, etc., and this embodiment is not limited thereto.
Since the battery cell 20 supplies electric energy to the electronic device through the casing 10 and the conductive member 30, the casing 10 and the conductive member 30 may be made of metal materials such as stainless steel, copper, iron, and the like.
The top cover 102 is provided with a through hole 1021, so that the top cover 102 forms a ring structure, the conductive member 30 is covered on the through hole 1021, and a sealing rubber ring 50 is arranged between the conductive member 30 and the through hole 1021, the sealing rubber ring 50 enables the conductive member 30 and the through hole 1021 to be insulated and connected in a sealing manner, that is, the conductive member 30 is adhered to the edge of the through hole 1021 through the sealing rubber ring 50, and the through hole 1021 on the top cover 102 is covered. Wherein, the shape of the through hole 1021 may be circular, oval or multi-deformation.
In order to improve the connection sealing performance between the conductive member 30 and the top cover 102, the conductive member 30 may be adhered to the top cover 102 through the sealing rubber ring 50 by heating and pressing, so that the adhesion reliability of the sealing rubber ring 50 may be improved, thereby improving the connection sealing performance between the conductive member 30 and the top cover 102.
Further, the conductive member 30 may protrude from the surface of the top cover 102, or a receiving groove 1022 for placing the conductive member may be disposed on the top cover 102, the conductive member 30 is located in the receiving groove 1022, as shown in fig. 5, and the upper surface of the conductive member 30 is flush with the upper surface of the top cover 102, when the conductive member 30 is insulated and hermetically connected with the top cover 102 through the sealing rubber ring 50, when heating and pressurizing, the sealing rubber ring 50 may overflow, so that the overflowing rubber is located in the receiving groove 1022, and the surface of the top cover 102 may not overflow, thus, the surface of the top cover 102 is relatively flat, and the overall structure of the button cell is more compact, and the overall aesthetic property of the button cell is improved.
In one embodiment, the through hole 1021 is a circular hole, the conductive member 30 is disc-shaped, and the diameter of the through hole 1021 is smaller than that of the conductive member 30, so that the edge of the conductive member 30 and at least a part of the edge of the through hole 1021 in the radial direction are stacked, the through hole 1021 and the conductive member 30 are tightly bonded through the sealing rubber ring 50 by heating and pressurizing, and the sealing rubber ring 50 under high temperature and high pressure can enable the connection between the through hole 1021 and the conductive member 30 to be tighter, thereby improving the sealing performance of the button cell.
Since the sealing property is better as the size of the radial single-side lamination of the edge of the conductive member 30 and the edge of the through hole 1021 is larger, in one embodiment, the radial single-side lamination portion of the conductive member 30 and the through hole 1021 is greater than or equal to 0.3mm, so that the sealing area between the conductive member 30 and the through hole 1021 is increased, and the sealing property between the conductive member 30 and the through hole 1021 is improved.
Further, as shown in fig. 3, the conductive member 30 is further provided with an extension portion 303 penetrating through the through hole 1021, for example, the conductive member 30 is formed into a T-shaped conductive member 30, so that the extension portion 303 is connected with the hole wall of the through hole 1021 in a sealing manner by the sealing rubber ring 50, the sealing area between the conductive member 30 and the through hole 1021 is further increased, and the sealing performance between the conductive member 30 and the through hole 1021 is improved. The sealing rubber ring 50 may be made of a soluble material, so as to improve the corrosion resistance and the sealing performance of the sealing rubber ring 50 against the electrolyte.
The sealing rubber ring 50 is annular, when the conductive piece 30 and the top cover 102 are heated and pressurized, the outer edge of the sealing rubber ring 50 overflows the joint of the conductive piece 30 and the top cover 102, and the inner edge of the sealing rubber ring 50 overflows the joint of the sealing rubber ring 50 and the edge of the through hole 1021 in the top cover 102, so that the connection reliability of the sealing rubber ring 50 in connecting the conductive piece and the top cover 102 can be ensured.
In addition to the above embodiments, as shown in fig. 1 to 4, the conductive member 30 is further provided with a liquid injection port 301 for injecting the electrolyte into the accommodating chamber 1011, and the liquid injection port 301 may be any shape such as a circle, a quadrangle, a polygon, etc. In one embodiment, the liquid injection port 301 is disposed concentrically with the conductive member 30, and the conductive member 30 is disposed concentrically with the accommodating cavity 1011 for accommodating the battery cell 20 in the casing 10.
In one embodiment, in order to improve the sealing performance between the sealing member 40 and the liquid injection port 301, a counter bore 302 is arranged at one end of the liquid injection port 301 away from the accommodating cavity 1011, the diameter of the counter bore 302 is larger than that of the liquid injection port 301, and the counter bore 302 is communicated with and coaxially arranged with the liquid injection port 301. The shape of the counter bore 302 is the same as that of the liquid injection port 301, that is, when the liquid injection port 301 is circular, the counter bore 302 is also circular, and for example, the depth of the counter bore 302 may be 0.01-0.5 mm.
The liquid injection port 301 is covered with the sealing member 40, that is, the sealing member 40 is located in the counterbore 302, because the depth of the counterbore 302 is small, the sealing member 40 can be of a sheet structure and is located in the counterbore 302 to cover the liquid injection port 301, in order to improve the sealing performance, the sealing member 40 is connected with the liquid injection port 301 in a sealing manner, for example, the sealing member 40 and the liquid injection port 301 can be welded, that is, after electrolyte is injected into the accommodating cavity 1011 through the liquid injection port 301, the joint between the sealing member 40 and the counterbore 302 is welded on the outer side of the shell 10, so that the sealing performance is improved.
Illustratively, the sealing member 40 may be a sealing nail, which is positioned in the counterbore 302 and then welded to the joint of the counterbore 302.
As shown in fig. 4, when the sealing nail and the liquid injection port 301 are sealed by welding, for convenience of welding, the diameter of the counter bore 302 is larger than the diameter of the nail cap of the sealing nail, and the portion of the sealing nail located in the counter bore 302 has a welding mark, that is, a welding device can weld the joint between the sealing nail and the conductive member 30 from the counter bore 302, for example, a laser beam of a laser welding device can extend into the counter bore 302 to weld the sealing nail and the conductive member 30 together.
Optionally, the sealing member 40 may be located in the counterbore 302 and bonded to the counterbore by a sealing rubber ring or the like, so as to simplify the operation.
In an alternative implementation manner, the battery cell 20 is a winding battery cell 20, specifically, the winding battery cell 20 includes a first pole piece, a second pole piece, and a diaphragm separating the first pole piece and the second pole piece; a first pole lug 201 is arranged on the first pole piece, the first pole lug 201 can be arranged on the first pole piece in a welding mode, a second pole lug 202 is arranged on the second pole piece, and the second pole lug 202 can be arranged on the second pole piece in a welding mode; 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 20 is formed.
It can be understood that the first pole piece of the battery cell 20 may be a positive pole piece, the second pole piece may be a negative pole piece, at this time, the first tab 201 disposed on the first pole piece is a positive tab, and the second tab 202 disposed on the second pole piece is a negative tab, in particular, when the battery cell is implemented, the battery cell 20 is accommodated in the accommodating cavity 1011, the positive tab is electrically connected to the inner bottom wall of the bottom case 101 in a welding manner, so that the bottom case 101 forms a positive pole of the button battery, the negative tab is electrically connected to the conductive piece 30, so that the conductive piece 30 forms a negative pole of the button battery, when the button battery is applied to the electronic device, the bottom case 101 is connected to the positive pole of the electronic device, and the conductive piece 30 is connected to the negative pole of the electronic device, so that the.
Or, the first pole piece of the battery cell 20 may be a negative pole piece, the second pole piece may be a positive pole piece, at this time, the first tab 201 disposed on the first pole piece is a negative pole tab, and the second tab 202 disposed on the second pole piece is a positive pole tab, when the method is specifically implemented, the battery cell 20 is accommodated in the accommodating cavity 1011, the negative pole tab is electrically connected with the bottom case 101 in a welding manner so that the bottom case 101 forms a negative pole of the button cell, the positive pole tab is electrically connected with the conductive piece 30 so that the conductive piece 30 forms a positive pole of the button cell, when the button cell is applied to the electronic device, the bottom case 101 is connected with the negative pole of the electronic device and conducted, the conductive piece 30 is connected with the positive pole of the electronic device and conducted, so that the battery cell.
In one embodiment, the second tab 202 is electrically connected to the end of the extension 303 of the conductive member 30 extending into the receiving cavity 1011, so that the contact area between the second tab 202 and the conductive member 30 can be increased, thereby improving the reliability of the electrical connection. In order to prevent the top cover 102 from interfering with the connection between the second tab 202 and the extension 303, after the extension 303 extends into the receiving cavity 1011, one end of the extension 303 facing the receiving cavity 1011 exceeds the inner wall of the top cover 102, so that when the second tab 202 is connected with the end surface of the extension 303, a gap is formed between the second tab 202 and the inner wall of the top cover 102, or an insulating layer is disposed in front of the inner wall of the top cover 102 and the second tab 202, so as to improve the reliability of the electrical connection between the second tab 202 and the conductive member 30.
The first tab 201 is electrically connected to the top cover 102 in the case 10 by welding or bonding.
Optionally, in order to improve the reliability of the electrical connection between the first tab 201 and the second tab 202, insulating layers may be disposed on the circumferential directions of the first tab 201 and the second tab 202, and only a portion of the first tab 201 or the second tab 202 electrically connected to the bottom case 101 or the conductive member 30 may be exposed.
Optionally, the coiled electric core 20 can form the electric core cavity 203 at the central point when coiling, and after electric core 20 was placed in holding chamber 1011, electric core cavity 203 set up with annotating liquid mouth 301 with one heart, like this, when electrolyte was poured into electrolyte into holding chamber 1011, the pole piece in electric core 20 and diaphragm etc. can not block the injection of electrolyte, had improved electrolyte injection efficiency to improve button cell's production efficiency.
In one embodiment, as shown in fig. 3, an abutting member 60 may be further inserted into the cell cavity 203 from the liquid injection port 301, the abutting member 60 may be a columnar structure, for example, a column, a prism, or the like, and may also be composed of one columnar member, or two or more columnar members connected end to end in sequence, when welding the first tab 201 and the inner bottom wall of the bottom case 101, the abutting member 60 is first inserted into the cell cavity 203, so that a first end of the abutting member 60 abuts against the first tab 201, and pressure is applied to a second end of the abutting member 60, so that the first tab 201 is attached to the inner bottom wall of the bottom case 101 by pressing the abutting member 60, and then welding is performed, so that welding reliability between the first tab 201 and the bottom case 101 can be improved, and electrical connection reliability between the first tab 201 and the bottom case 101 can be improved.
It should be noted that, for the convenience of user operation, the second end of the abutting member 60 may extend out of the top cover 102 of the casing 10, and after the welding of the first tab 201 of the button cell with the inner bottom wall of the bottom case 101 is completed and the top cover 102 with the conductive member 30 is hermetically connected with the bottom case 101, the abutting member 60 may be removed from the cell cavity 203 along the pour opening 301.
In an implementation manner, since the vibration may occur during the welding process, if the bottom case 101 and the top cover 102 are connected in a sealing manner first, and then the first tab 201 and the bottom case 101 are welded to generate the vibration, the bottom case 101 and the top cover 102 may deviate, so that the bottom case 101 and the top cover 102 may be misaligned, the sealed connection between the bottom case 101 and the top cover 102 may become loose or the sealed connection may fail, and finally the sealing performance of the button-type battery cell may be poor. Therefore, in this embodiment, the battery cell 20 with the first tab 201 and the second tab 202 is placed in the receiving cavity 1011 of the bottom case 101, the abutting member 60 is inserted into the cell cavity 203 of the battery cell 20, the first tab 201 is pressed by the abutting member 60 to be attached to the inner bottom wall of the bottom case 101, the bottom case 101 is welded to the first tab 201 by the welding device, so that the first tab 201 is electrically connected to the bottom case 101, the top cover 102 with the conductive member 30 is hermetically connected to the bottom case 101 by welding or bonding, since the bottom case 101 and the top cover 102 are welded to each other, the abutting member 60 is always abutted to the first tab 201, the problem of loose connection between the first tab 201 and the inner wall of the bottom case 101 is avoided due to the shaking, the connection reliability between the first tab 201 and the bottom case 101 is ensured, the reliability of the sealing connection between the bottom case 101 and the top cover 102 is improved, thereby improving the sealability of the button cell.
In another implementation manner, when there is no abutting part 60, since the first tab 201 is welded to the inner bottom wall of the bottom case 101 first and then the bottom case 101 is welded to the top cover 102, the first tab 201 may shake with the bottom case 101 due to welding, which may loosen the welding between the first tab 201 and the inner bottom wall of the bottom case 101, thereby causing a problem of low reliability of the electrical connection between the first tab 201 and the bottom case 101. In this embodiment, the bottom case 101 and the top cover 102 may be welded first, and then the first tab 201 and the inner bottom wall of the bottom case 101 are welded, so that the welding reliability of the first tab 201 and the bottom case 101 may be improved, thereby improving the electrical connection reliability between the first tab and the bottom case, and the sealing performance between the bottom case 101 and the top cover 102 may be increased by adding a sealing member, and the present embodiment is not limited thereto.
The button cell provided by the embodiment of the present invention, when in specific implementation, firstly, the top cover 102 and the conductive member 30 are connected together through the sealing rubber ring 50 in an insulating and sealing manner by means of heating and pressurizing, then the battery cell 20 is placed into the accommodating cavity 1011 in the bottom case 101, the abutting member 60 is inserted into the battery cell cavity 203, the first end of the abutting member 60 abuts against the first tab 201, the second end of the abutting member 60 extends out of the top cover 102, the first tab 201 is attached to the inner bottom wall of the bottom case 101 by pressing the abutting member 60, the first tab 201 is welded to the bottom case 101 by the welding equipment, the top cover 102 with the conductive member 30 is covered on the bottom case 101, the bottom case 101 and the top cover 102 are connected in a sealing manner by means of bonding or welding, and the second tab 202 on the battery cell 20 is electrically connected to the conductive member 30, the abutting member 60 is taken out, and the electrolyte is injected into the accommodating cavity from the injection port 301, after the electrolyte is injected, the sealing member 40 is covered on the injection port 301, and the sealing member 40 is hermetically connected with the injection port 301 by bonding or welding.
The embodiment of the utility model provides a button cell, electrically conductive piece closing cap is on the through-hole of top cap, with top cap and electrically conductive piece through the insulating and sealed connection of sealed rubber ring together, place the holding intracavity at the drain pan with electric core, make the interior diapire of first utmost point ear on the electric core and drain pan weld, top cap and drain pan sealing connection who will have electrically conductive piece again, and make second utmost point ear on the electric core and electrically connect with electrically conductive piece, last top cap and the drain pan sealing connection who will have electrically conductive piece again, pour into to the holding intracavity with electrolyte from the notes liquid mouth on electrically conductive piece, electrolyte pours into the completion back, will seal a closing cap on annotating the liquid mouth, and make and seal a and annotate the liquid mouth through bonding or welded mode sealing connection, thereby button cell's leakproofness has.
Example two
The embodiment of the utility model provides an electronic equipment is still provided, button cell that provides in electronic equipment body and the embodiment one, button cell provide the electric energy for the electronic equipment body.
The structure and the working principle of the button cell battery are explained in detail in the first embodiment, and are not described in detail herein.
The utility model provides an electronic equipment, include the electronic equipment body and provide the button cell of electric energy for the electronic equipment body, button cell passes through conductive piece closing cap on the through-hole of top cap, it is insulating and sealed linking together through sealed rubber ring with top cap and conductive piece, place the holding intracavity at the drain pan with electric core, make the interior diapire of first utmost point ear on the electric core and drain pan weld, top cap and drain pan sealing connection that will have conductive piece again, and make second utmost point ear on the electric core and electrically connected with conductive piece, top cap and drain pan sealing connection that will have conductive piece at last, pour into electrolyte to the holding intracavity from annotating liquid mouth on conductive piece into, the back is accomplished in electrolyte injection, will seal the piece closing cap on annotating the liquid mouth, and make seal the piece and annotate the liquid mouth through bonding or welded mode sealing connection, thereby button cell's leakproofness has been improved.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
In the description of the present specification, references to "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
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 (10)
1. A button cell battery, comprising: the battery comprises a shell, a battery core and a conductive piece;
the shell comprises a bottom shell and a top cover, the top cover is connected with the bottom shell in a sealing mode, an accommodating cavity for accommodating the battery cell is formed by the bottom shell and the top cover in an enclosing mode, a through hole communicated with the accommodating cavity is formed in the top cover, and the conductive piece covers the through hole and is connected with the top cover in an insulating and sealing mode through a sealing rubber ring;
the conductive piece is also provided with a liquid injection port for injecting electrolyte into the accommodating cavity, the liquid injection port is covered with a sealing piece, and the sealing piece is hermetically connected with the liquid injection port;
the battery cell is provided with a first tab and a second tab, the first tab is abutted to the inner bottom wall of the bottom shell and is welded with the inner bottom wall of the bottom shell, and the second tab is electrically connected with the conductive piece.
2. The button cell according to claim 1, wherein the conductive member is provided with an extension portion penetrating the through hole, the extension portion extends into the receiving cavity, and the second tab is electrically connected to an end of the extension portion facing the receiving cavity.
3. The button cell according to claim 1, wherein the closure is a closure spike; the liquid injection port is far away from one end of the containing cavity and is provided with a counter bore, the diameter of the counter bore is larger than that of the liquid injection port, the counter bore is communicated with the liquid injection port, and the sealing nail is positioned in the counter bore and is hermetically connected with the counter bore.
4. The button cell according to claim 3, wherein the sealing nail is welded to the counterbore.
5. The button cell battery according to any one of claims 1-4, wherein a cell cavity is formed at the center of the cell, and the cell cavity is concentric with the casing and the liquid injection port.
6. The button cell according to any one of claims 1-4, wherein the top cover is provided with a counter bore, the conductive member is located in the counter bore, and the upper surface of the conductive member is flush with the upper surface of the top cover.
7. Button cell according to any of claims 1 to 4, characterized in that the cross section of the casing is circular in shape.
8. The button cell battery according to any one of claims 1 to 4, wherein the cell is a wound cell.
9. The button cell battery according to claim 5, further comprising an abutting member, wherein the abutting member is located in the cell cavity and is concentric with the cell cavity, and one end of the abutting member abuts against the first tab, so that the first tab is attached to the inner bottom wall of the bottom case.
10. An electronic device, characterized by comprising an electronic device body and the button cell battery of any one of claims 1-9;
the button cell provides electric energy for the electronic equipment body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111613739A (en) * | 2020-06-03 | 2020-09-01 | 珠海冠宇电池股份有限公司 | Button cell, manufacturing method thereof and electronic equipment |
| CN112886048A (en) * | 2021-02-07 | 2021-06-01 | 惠州市德能电池有限公司 | Button cell and preparation method thereof |
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| CN111613739A (en) * | 2020-06-03 | 2020-09-01 | 珠海冠宇电池股份有限公司 | Button cell, manufacturing method thereof and electronic equipment |
| US11862806B2 (en) | 2020-06-03 | 2024-01-02 | Zhuhai Cosmx Battery Co., Ltd. | Button cell and electronic device |
| CN112886048A (en) * | 2021-02-07 | 2021-06-01 | 惠州市德能电池有限公司 | Button cell and preparation method thereof |
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