CN211654872U - Shell assembly of button cell, button cell and electronic product - Google Patents
Shell assembly of button cell, button cell and electronic product Download PDFInfo
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- CN211654872U CN211654872U CN202020754299.0U CN202020754299U CN211654872U CN 211654872 U CN211654872 U CN 211654872U CN 202020754299 U CN202020754299 U CN 202020754299U CN 211654872 U CN211654872 U CN 211654872U
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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 shell subassembly of button cell, button cell and electronic product, this shell subassembly of button cell includes shell and conductive piece, and shell and conductive piece enclose into the holding chamber that is used for holding button cell's electric core, and the electric core has first utmost point ear and second utmost point ear, and first utmost point ear is connected with the shell electricity, and the second utmost point ear is connected with conductive piece electricity; one end face of the shell is provided with a conductive hole and a liquid injection hole, the conductive piece is arranged in the conductive hole in a penetrating way, and a sealing rubber ring which seals and insulates the conductive piece and the inner wall of the conductive hole is arranged between the conductive piece and the inner wall of the conductive hole; the upper cover of the liquid injection hole is provided with a sealing cover for sealing the liquid injection hole, and the edge of the sealing cover is welded and connected with the wall of the shell at the periphery of the liquid injection hole; the minimum interval of the edge of the sealing cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a first preset interval, so that the sealing rubber ring is prevented from being damaged when the sealing cover is welded, and adverse effects on the manufacturing process and the yield of the button cell are avoided.
Description
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. As the demand for button cells increases, the manufacturing process is receiving more and more attention.
However, the problems affecting the manufacturing process and the yield of the button cell still exist in the current button cell during the manufacturing process, and therefore, how to solve the problems affecting the manufacturing process and the yield of the button cell becomes a major concern of designers.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shell subassembly, button cell and electronic product of button cell to avoid damaging the downthehole sealing rubber ring of electrically conducting when the closing cap in liquid hole is annotated in the welding, thereby avoided making progress and yields of button cell to cause adverse effect.
In a first aspect, the present invention provides a casing assembly for a button cell, including a casing and a conductive member, wherein the casing and the conductive member 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 casing, and the second tab is electrically connected to the conductive member; the shell is provided with two end faces which are oppositely arranged and a side face which is positioned between the two end faces, wherein one end face is provided with a conductive hole and a liquid injection hole, the conductive piece is arranged in the conductive hole in a penetrating way, and a sealing rubber ring which enables the conductive piece and the inner wall of the conductive hole to be sealed and insulated is arranged between the conductive piece and the inner wall of the conductive hole; the upper cover of the liquid injection hole is provided with a sealing cover for sealing the liquid injection hole, and the edge of the sealing cover is welded and connected with the wall of the shell at the periphery of the liquid injection hole; the minimum distance between the edge of the sealing cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a first preset distance.
The utility model discloses a shell subassembly of button cell includes shell and conductive piece, shell and conductive piece 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 the shell electricity, and second utmost point ear is connected with conductive piece electricity to make electric core can export electric energy or make electric core can receive the electric energy of external input through shell and conductive piece through shell; the shell is provided with two end faces which are oppositely arranged and a side face which is positioned between the two end faces, a conductive piece is arranged in the conductive hole in a penetrating way by arranging a conductive hole and a liquid injection hole on one end face, and a sealing rubber ring which seals and insulates the conductive piece and the inner wall of the conductive hole is arranged between the conductive piece and the inner wall of the conductive hole; meanwhile, a sealing cover for sealing the liquid injection hole is arranged on the liquid injection hole in a covering mode, the edge of the sealing cover is in welded connection with the wall of the periphery of the liquid injection hole, and the minimum distance between the edge of the sealing cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a first preset distance, so that the situation that the sealing rubber ring is damaged by high temperature of a welding gun and the sealing performance of the sealing rubber ring is reduced or even loses efficacy in the process of welding the sealing cover can be avoided, and the quality and the yield of the button cell can be guaranteed; on the other hand, in the machining and manufacturing process of the button cell, an operator can directly perform welding operation based on the first preset distance, so that the problem that a welding gun is too close to the sealing rubber ring in the welding process to cause welding failure and rework is avoided, and the manufacturing process of the button cell is accelerated.
The housing assembly of a button cell battery as described above, optionally, the first predetermined distance is 1.1 mm.
The casing assembly of the button cell battery comprises an upper casing with an opening at one end and a bottom cover covering the opening, wherein the edge of the bottom cover is welded with the upper casing, and the bottom cover is formed into one end face of the casing; the conductive holes are positioned on the bottom cover, and the minimum distance between the edge of the bottom cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a second preset distance.
The housing assembly of a button cell battery as described above, optionally, the second predetermined spacing is 1.5 mm.
Optionally, the conductive piece includes a columnar portion penetrating through the conductive hole, a sheet portion overlapping with the periphery of the conductive hole is disposed at the top end of the columnar portion, and a flange for pressing the sealing rubber ring is disposed at the bottom end of the columnar portion; or the top end and the bottom end of the columnar part are both provided with the sheet parts, and the two sheet parts are respectively lapped with the periphery of the conductive hole on two sides of the end face.
Optionally, a portion of the end surface is recessed towards a direction away from the battery core to form a receiving groove, the conductive hole is located at a bottom of the receiving groove, and the sheet portion disposed at the top end of the columnar portion is located in the receiving groove.
In the casing assembly of a button cell, optionally, the sum of the thickness of the sheet part and the thickness of the sealing rubber ring between the sheet part and the bottom of the accommodating groove is less than or equal to the depth of the accommodating groove.
In the casing assembly of a button cell, optionally, a part of the end face is recessed towards a direction away from the cell to form a groove, and the liquid injection hole is located at the bottom of the groove.
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 electricity core and button cell's shell subassembly, wherein, button cell's shell subassembly includes shell and conductive piece, and the holding chamber that is used for holding button cell's electricity core is enclosed to shell and conductive piece, and the electricity core has first utmost point ear and second utmost point ear, and first utmost point ear is connected with the shell electricity, and second utmost point ear is connected with conductive piece electricity to make electricity core can be through shell and conductive piece export electric energy outward or make electricity core can receive the electric energy of external input through shell and conductive piece; the shell is provided with two end faces which are oppositely arranged and a side face which is positioned between the two end faces, a conductive piece is arranged in the conductive hole in a penetrating way by arranging a conductive hole and a liquid injection hole on one end face, and a sealing rubber ring which seals and insulates the conductive piece and the inner wall of the conductive hole is arranged between the conductive piece and the inner wall of the conductive hole; meanwhile, a sealing cover for sealing the liquid injection hole is arranged on the liquid injection hole in a covering mode, the edge of the sealing cover is in welded connection with the wall of the periphery of the liquid injection hole, and the minimum distance between the edge of the sealing cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a first preset distance, so that the situation that the sealing rubber ring is damaged by high temperature of a welding gun and the sealing performance of the sealing rubber ring is reduced or even loses efficacy in the process of welding the sealing cover can be avoided, and the quality and the yield of the button cell can be guaranteed; on the other hand, in the machining and manufacturing process of the button cell, an operator can directly perform welding operation based on the first preset distance, so that the problem that a welding gun is too close to the sealing rubber ring in the welding process to cause welding failure and rework is avoided, and the manufacturing process of the button cell is accelerated.
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 shell and conductive piece, and the holding chamber that is used for holding button cell's electric core is enclosed to shell and conductive piece, and electric core has first utmost point ear and second utmost point ear, and first utmost point ear is connected with the shell electricity, and second utmost point ear is connected with conductive piece electricity to make electric core can through shell and conductive piece export electric energy or make electric core can receive the electric energy of external input through shell and conductive piece; the shell is provided with two end faces which are oppositely arranged and a side face which is positioned between the two end faces, a conductive piece is arranged in the conductive hole in a penetrating way by arranging a conductive hole and a liquid injection hole on one end face, and a sealing rubber ring which seals and insulates the conductive piece and the inner wall of the conductive hole is arranged between the conductive piece and the inner wall of the conductive hole; meanwhile, a sealing cover for sealing the liquid injection hole is arranged on the liquid injection hole in a covering mode, the edge of the sealing cover is in welded connection with the wall of the periphery of the liquid injection hole, and the minimum distance between the edge of the sealing cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a first preset distance, so that the situation that the sealing rubber ring is damaged by high temperature of a welding gun and the sealing performance of the sealing rubber ring is reduced or even loses efficacy in the process of welding the sealing cover can be avoided, and the quality and the yield of the button cell can be guaranteed; on the other hand, in the machining and manufacturing process of the button cell, an operator can directly perform welding operation based on the first preset distance, so that the problem that a welding gun is too close to the sealing rubber ring in the welding process to cause welding failure and rework is avoided, and the manufacturing process of the button cell is accelerated.
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 second cross-sectional view of a button cell provided in an embodiment of the present invention;
fig. 3 is a third cross-sectional view of a button cell provided in an embodiment of the present invention;
fig. 4 is a fourth cross-sectional view of the button cell provided in an embodiment of the present invention.
Description of reference numerals:
1-a housing;
11-an upper shell;
12-a bottom cover;
121-liquid injection hole;
122-a receiving groove;
123-groove;
2-a conductive member;
21-a columnar portion;
22-a tab;
23-flanging;
24-a gasket;
3-sealing the rubber ring;
4-sealing the cover;
and 5-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.
However, in the process of machining and manufacturing the button cell, since the liquid injection hole of the button cell is usually located in the same plane as the conductive hole where the conductive piece is located, and the liquid injection hole is finally welded and sealed by the sealing cover, and the sealing cover is welded, the sealing rubber ring in the conductive hole is easily damaged by the high temperature of the welding gun, so that the sealing performance of the sealing rubber ring is reduced and even fails, and therefore, on one hand, the button cell being machined may need to be reworked, and the manufacturing process of the button cell is affected; and on the other hand, the button cell can be scrapped, and the yield of the product is reduced.
In order to solve the technical problem, the utility model provides a shell subassembly of button cell, this shell subassembly of button cell is through making the minimum interval of the edge of the lid that seals of annotating the liquid hole and the outer fringe of sealing rubber ring in the horizontal plane not less than first predetermined interval to can avoid at the in-process of welding seal lid, welder's high temperature damage sealing rubber ring and the sealing performance that leads to sealing rubber ring reduce or even become invalid, and then avoided manufacturing process and yields to button cell to produce adverse effect.
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 second cross-sectional view of a button cell provided in an embodiment of the present invention; fig. 3 is a third cross-sectional view of a button cell provided in an embodiment of the present invention; fig. 4 is a fourth cross-sectional view of the button cell provided in an embodiment of the present invention.
As shown in fig. 1, the present embodiment provides a housing assembly of a button cell, the housing assembly of the button cell includes a housing 1 and a conductive piece 2, the housing 1 and the conductive piece 2 enclose a holding cavity for holding a cell 5 of the button cell, the cell 5 has a first tab and a second tab (not shown in the figure), the first tab is electrically connected to the housing 1, the second tab is electrically connected to the conductive piece 2, so that electric energy generated on the cell 5 can be transmitted outwards to provide electric energy for external electric equipment through the housing 1 and the conductive piece 2, or, when the button cell is a rechargeable button cell, and when the external charging equipment is charged, the electric energy provided to the button cell by the charging equipment can be transmitted to the cell 5 through the housing 1 and the conductive piece 2.
The shell 1 is provided with two end faces which are oppositely arranged and a side face which is positioned between the two end faces, wherein one end face is provided with a conductive hole and a liquid injection hole 121, the conductive piece 2 is arranged in the conductive hole in a penetrating way, a sealing rubber ring 3 which enables the conductive piece 2 and the inner wall of the conductive hole to be sealed and insulated is arranged between the conductive piece 2 and the inner wall of the conductive hole, and in order to ensure the sealing property and the insulating property of the sealing rubber ring 3, the sealing rubber ring 3 can be arranged to cover the inner wall of the conductive hole and extend to the wall of the periphery of the conductive hole; the top cover of the liquid injection hole 121 is provided with a sealing cover 4 for sealing the liquid injection hole 121, and the edge of the sealing cover 4 is welded with the wall of the casing around the liquid injection hole 121, so that the sealing cover 4 seals the liquid injection hole 121. At this moment, the sealing cover 4 and the sealing rubber ring 3 are both located on the same end face of the housing 1, and the minimum distance L between the edge of the sealing cover 4 and the outer edge of the sealing rubber ring 3 in the horizontal plane is not smaller than a first preset distance, so that the situation that the sealing rubber ring 3 is damaged by the high temperature of a welding gun in the process of welding the sealing cover 4, and the quality of the button cell is reduced or even scrapped can be avoided.
The minimum distance between the edge of the sealing cover 4 and the outer edge of the sealing rubber ring 3 in the horizontal plane refers to a projection of a distance between the edge of one side of the sealing cover 4 closest to the sealing rubber ring 3 and the outer edge of one side of the sealing rubber ring 3 closest to the sealing cover 4 in the horizontal plane, for example, when the sealing cover 4 is circular and the sealing rubber ring 3 is circular, a projection of a portion, in the horizontal plane, of a connecting line between the center of the sealing cover 4 and the center of the sealing rubber ring 3, between the edge of the sealing cover 4 and the outer edge of the sealing rubber ring 3 is the minimum distance between the edge of the sealing cover 4 and the outer edge of the sealing rubber ring 3 in the horizontal plane.
The first preset distance is a distance which can ensure that the sealing rubber ring 3 is not damaged by the high temperature of a welding gun when the welding gun is used for welding one side, closest to the sealing rubber ring 3, of the sealing cover 4, and the first preset distance can be determined according to the size of the button cell, the temperature during welding, the material of the sealing rubber ring 3 and other comprehensive considerations.
In one implementation, the battery cell 5 is 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 electric core 5 can be the positive plate, the second pole piece can be the negative plate, at this moment, the first utmost point ear of setting on first pole piece is the positive pole ear, the second utmost point ear of setting on the second pole piece is the negative pole ear, when specifically realizing, hold electric core 5 in the holding intracavity that shell 1 and electrically conductive piece 2 enclosed, the positive pole ear is connected so that shell 1 forms button cell's positive pole with shell 1 electricity, the negative pole ear is connected so that electrically conductive piece 2 forms button cell's negative pole with electrically conductive piece 2, when this button cell is used on electronic product, shell 1 is connected with electronic product's positive pole and is switched on, electrically conductive piece 2 is connected with electronic product's negative pole and is switched on, thereby supply power for electronic product.
Or, the first pole piece of electric core 5 can be the negative pole piece, the second pole piece can be the positive plate, at this moment, the first utmost point ear of setting on first pole piece is the negative pole ear, the second utmost point ear of setting on the second pole piece is the positive pole ear, when specifically realizing, hold electric core 5 in the holding intracavity that shell 1 and conductive piece 2 enclose, the negative pole ear is connected so that shell 1 forms button cell's negative pole with shell 1 electricity, the positive pole ear is connected with conductive piece 2 electricity, so that conductive piece 2 forms button cell's positive pole, when this button cell is used in the electronic product, shell 1 is connected with electronic product's negative pole and is switched on, conductive piece 2 is connected with electronic product's positive pole and is switched on, thereby supply power for electronic product.
In other implementations, the battery cells 5 may also be laminated battery cells or other types of battery cells, which are not listed here.
During the concrete realization, coiling formula electricity core is located shell 1 and the holding intracavity that closes is enclosed to conductive piece 2, has seted up conductive hole and notes liquid hole 121 on one of them terminal surface of shell 1, and conductive piece 2 wears to establish in conductive hole, and is provided with sealed rubber ring 3 between the inner wall in conductive piece 2 and conductive hole, annotates liquid hole 121 upper cover and is equipped with sealing cover 4, and the minimum interval L of the edge of sealing cover 4 and the outer fringe of sealed rubber ring 3 in the horizontal plane is greater than or equal to first preset interval. In general, the sealing cap 4 is welded at the injection hole 121 to seal the injection hole 121 after the button cell is assembled and subjected to injection treatment, and if the sealing cap 4 is welded, the sealing rubber ring 3 is damaged by high temperature of a welding gun, which easily causes the button cell to be scrapped when the button cell is about to be manufactured, so that it is important to ensure that the minimum distance L between the edge of the sealing cap 4 for welding and the outer edge of the sealing rubber ring 3 in the horizontal plane is not less than a first preset distance to ensure the quality and yield of the button cell.
The housing assembly of the button cell battery of the embodiment includes a housing 1 and a conductive piece 2, the housing 1 and the conductive piece 2 enclose a containing cavity for containing a battery cell 5 of the button cell battery, the battery cell 5 has a first tab and a second tab, the first tab is electrically connected with the housing 1, the second tab is electrically connected with the conductive piece 2, so that the battery cell 5 can output electric energy outwards through the housing 1 and the conductive piece 2 or the battery cell 5 can receive electric energy input from the outside through the housing 1 and the conductive piece 2; the shell 1 is provided with two end faces which are oppositely arranged and a side face which is positioned between the two end faces, a conductive piece 2 is arranged in the conductive hole in a penetrating way by arranging a conductive hole and a liquid injection hole 121 on one end face, and a sealing rubber ring 3 which enables the conductive piece 2 and the inner wall of the conductive hole to be sealed and insulated is arranged between the conductive piece 2 and the inner wall of the conductive hole; meanwhile, the sealing cover 4 for sealing the liquid injection hole 121 is covered on the liquid injection hole 121, the edge of the sealing cover 4 is welded with the wall of the periphery of the liquid injection hole 121, and the minimum distance L between the edge of the sealing cover 4 and the outer edge of the sealing rubber ring 3 in the horizontal plane is not smaller than a first preset distance, so that on one hand, the sealing rubber ring 3 can be prevented from being damaged by high temperature of a welding gun in the process of welding the sealing cover 4, the sealing performance of the sealing rubber ring 3 is reduced or even loses efficacy, and the quality and the yield of the button cell can be guaranteed; on the other hand, in the machining and manufacturing process of the button cell, an operator can directly perform welding operation based on the first preset distance, so that the problem that a welding gun is too close to the sealing rubber ring in the welding process to cause welding failure and rework is avoided, and the manufacturing process of the button cell is accelerated.
The first preset distance may be 1.1mm, that is, the minimum distance L between the edge of the sealing cover 4 and the outer edge of the sealing rubber ring 3 in the horizontal plane is greater than or equal to 1.1mm, for example, the minimum distance L between the edge of the sealing cover 4 and the outer edge of the sealing rubber ring 3 in the horizontal plane may be set to any value greater than or equal to 1.1mm, such as 1.1mm, 1.2mm, 1.5mm, or 2mm, according to actual needs, so that the sealing rubber ring 3 can be prevented from being damaged by high temperature of a welding gun in the process of welding the sealing cover 4.
In order to facilitate the battery cell 5 to be placed in the accommodating cavity, the housing 1 may include an upper casing 11 with an opening at one end and a bottom cover 12 covering the opening of the upper casing 11, an edge of the bottom cover 12 is welded to the upper casing 11, at this time, the bottom cover 12 may be formed as one end surface of the housing 1, and a bottom surface of the upper casing 11 may be formed as the other end surface of the housing 1. The conductive hole may be formed in the bottom cover 12, and in this case, in order to avoid damage to the sealing rubber ring 3 in the conductive hole due to high temperature of the welding gun during welding of the edge of the bottom cover 12 with the upper housing 11, a minimum distance M between the edge of the bottom cover 12 and the outer edge of the sealing rubber ring 3 in a horizontal plane may be set to be not smaller than a second preset distance.
The minimum distance M in the horizontal plane between the edge of the bottom cover 12 and the outer edge of the rubber gasket 3 refers to a projection of a distance between one side edge of the bottom cover 12 closest to the rubber gasket 3 and one side outer edge of the rubber gasket 3 closest to the bottom cover 12 in the horizontal plane, for example, when the bottom cover 12 is circular and the rubber gasket 3 is circular, a ray is extracted from the center of the bottom cover 12, passes through the center of the rubber gasket 3, and extends to intersect with the edge of the bottom cover 12, and at this time, a projection of a portion of the ray between the edge of the bottom cover 12 and the outer edge of the rubber gasket 3 closest to the edge of the bottom cover 12 in the horizontal plane is the minimum distance M in the horizontal plane between the edge of the bottom cover 12 and the edge of the rubber gasket 3. In general, the conductive hole is circular and is arranged concentrically with the circular bottom cover 12, the sealing rubber ring 3 located in the conductive hole is a circular ring concentric with the bottom cover 12, at this time, the distance between the outer edge of the sealing rubber ring 3 and the edge of the bottom cover 12 is equal everywhere, that is, the distance between the outer edge of the sealing rubber ring 3 and the edge of the bottom cover 12 in the horizontal plane needs to satisfy the requirement of not less than the second preset distance.
The second preset distance is a distance which can ensure that when the welding gun moves to one side closest to the sealing rubber ring 3 in the process of welding the bottom cover 12 and the upper shell 11, the sealing rubber ring 3 is not damaged by the high temperature of the welding gun, and the second preset distance can be determined according to the size of the button cell, the temperature during welding, the material of the sealing rubber ring and other comprehensive considerations.
The second preset distance may be 1.5mm, that is, the minimum distance M between the edge of the bottom cover 12 and the outer edge of the rubber gasket 3 in the horizontal plane is greater than or equal to 1.5mm, for example, the minimum distance M between the edge of the bottom cover 12 and the outer edge of the rubber gasket 3 in the horizontal plane may be set to any value greater than or equal to 1.5mm, such as 1.5mm, 1.6mm, 1.8mm, 2mm, or 3mm, according to actual needs, so that the rubber gasket 3 can be prevented from being damaged by the high temperature of the welding gun during welding the bottom cover 12 and the upper housing 11.
One implementation of the conductive member 2 is shown in fig. 2: the conductive piece 2 comprises a columnar part 21 penetrating through the conductive hole, a sheet part 22 lapped with the periphery of the conductive hole is arranged at the top end of the columnar part 21, a flanging 23 used for pressing the sealing rubber ring 3 is arranged at the bottom end of the columnar part 21, a gasket can be arranged between the flanging 23 and the sealing rubber ring 3 for better pressing the sealing rubber ring 3, and therefore sealing between the conductive piece 2 and the sealing rubber ring 3 and between the housing 1 can be more reliable.
Another implementation of the conductive member is shown in fig. 1: the electrically conductive piece 2 is including wearing to establish the column portion 21 in the electrically conductive hole, and the top and the bottom of column portion 21 all are provided with slice portion 22, and two slice portions 22 are respectively in the peripheral overlap joint of the both sides of terminal surface and electrically conductive hole to not only be favorable to fixing electrically conductive piece 2 in the electrically conductive hole, can press from both sides tightly sealing rubber ring 3 between the inner wall in column portion 21 and electrically conductive hole in addition, with formation good sealed.
The conductive device 2 may have other implementation manners as long as the requirements of the present embodiment on the conductive device 2 can be met, and details are not described herein.
Referring to fig. 3, a portion of the end surface of the housing 1 may be recessed toward a direction away from the battery cell 5 to form a receiving groove 122, the conductive hole is located at the bottom of the receiving groove 122, and the sheet portion 22 disposed at the top end of the columnar portion 21 is located in the receiving groove 122, so that on one hand, the space of the receiving cavity occupied by the conductive member 2 can be reduced, which is beneficial to increasing the receiving space of the battery cell 5; on the other hand storage tank 122 can play certain guard action to the part that is located storage tank 122 of sealing rubber ring 3, and the storage tank can increase sealing rubber ring 3 and the ascending distance of closing cap 4 in vertical direction simultaneously, is favorable to avoiding welding closing cap 4's in-process, and welder's high temperature causes the damage to sealing rubber ring 3.
Further, the sum of the thickness of the sheet portion 22 and the thickness of the sealing rubber ring 3 located between the bottom of the sheet portion 22 and the bottom of the accommodating groove 122 is less than or equal to the depth of the accommodating groove 122, so that the whole sheet portion 22 and the sealing rubber ring 3 located below the sheet portion 22 can sink into the accommodating groove 122, the accommodating space of the battery cell 5 cannot be occupied, the performance of the button cell is favorably improved, and the part of the sealing rubber ring 3 located in the accommodating groove 122 can be better protected.
Referring to fig. 4, a groove 123 is formed by recessing a part of the end face of the housing 1 in a direction away from the battery cell 5, and the liquid injection hole 121 is located at the bottom of the groove 123, so that on one hand, not only can slow or impossible injection of electrolyte caused by blockage of the liquid injection hole 121 by the end face of the battery cell 5 be avoided, but also the liquid injection needle can be prevented from damaging the battery cell 5; on the other hand, the distance between the sealing cover 4 and the sealing rubber ring 3 in the vertical direction can be increased, and the sealing rubber ring 3 is prevented from being damaged by the high temperature of a welding gun in the process of welding the sealing cover 4.
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 (10)
1. The shell assembly of the button cell is characterized by comprising a shell and a conductive piece, wherein the shell and the conductive piece are enclosed into 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 shell, and the second tab is electrically connected with the conductive piece;
the shell is provided with two end faces which are oppositely arranged and a side face which is positioned between the two end faces, wherein one end face is provided with a conductive hole and a liquid injection hole, the conductive piece is arranged in the conductive hole in a penetrating way, and a sealing rubber ring which enables the conductive piece and the inner wall of the conductive hole to be sealed and insulated is arranged between the conductive piece and the inner wall of the conductive hole; the upper cover of the liquid injection hole is provided with a sealing cover for sealing the liquid injection hole, and the edge of the sealing cover is welded and connected with the wall of the shell at the periphery of the liquid injection hole;
the minimum distance between the edge of the sealing cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a first preset distance.
2. The housing assembly of a button cell battery as in claim 1, wherein the first predetermined spacing is 1.1 mm.
3. The housing assembly for button cell batteries according to claim 1, wherein said housing comprises an upper case with an opening at one end and a bottom cover covering said opening, the edge of said bottom cover is welded with said upper case, said bottom cover is formed as one of said end faces of said housing;
the conductive holes are positioned on the bottom cover, and the minimum distance between the edge of the bottom cover and the outer edge of the sealing rubber ring in the horizontal plane is not smaller than a second preset distance.
4. The housing assembly of a button cell battery as in claim 3 wherein the second predetermined spacing is 1.5 mm.
5. The casing assembly of the button cell battery as defined in any one of claims 1 to 4, wherein the conductive member comprises a columnar portion inserted into the conductive hole, the top end of the columnar portion is provided with a sheet portion overlapping the periphery of the conductive hole, and the bottom end of the columnar portion is provided with a flange for pressing the sealing rubber ring; or the like, or, alternatively,
the top end and the bottom end of the columnar portion are respectively provided with the sheet portions, and the two sheet portions are respectively connected with the peripheries of the conductive holes on the two sides of the end face in an overlapping mode.
6. The casing assembly of a button cell battery as claimed in claim 5, wherein a portion of the end surface is recessed away from the cell core to form a receiving groove, the conductive hole is located at the bottom of the receiving groove, and the sheet portion disposed at the top end of the columnar portion is located in the receiving groove.
7. The housing assembly for button cells according to claim 6, wherein the sum of the thickness of the sheet part and the thickness of the sealing rubber ring between the sheet part and the bottom of the accommodating groove is less than or equal to the depth of the accommodating groove.
8. The casing assembly of a button cell battery as claimed in any one of claims 1 to 4, wherein a portion of the end surface is recessed away from the cell to form a groove, and the liquid injection hole is located at the bottom of the groove.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020754299.0U CN211654872U (en) | 2020-05-09 | 2020-05-09 | Shell assembly of button cell, button cell and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020754299.0U CN211654872U (en) | 2020-05-09 | 2020-05-09 | Shell assembly of button cell, button cell and electronic product |
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| CN211654872U true CN211654872U (en) | 2020-10-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112635878A (en) * | 2021-01-19 | 2021-04-09 | 广东至力科技有限公司 | Miniature lithium ion battery with welding protection washer |
| CN113383456A (en) * | 2020-11-26 | 2021-09-10 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| WO2022135282A1 (en) * | 2020-12-21 | 2022-06-30 | 珠海冠宇电池股份有限公司 | Battery |
| WO2022184081A1 (en) * | 2021-03-02 | 2022-09-09 | 珠海冠宇电池股份有限公司 | Battery |
| CN115332696A (en) * | 2022-10-11 | 2022-11-11 | 宁德新能源科技有限公司 | Battery and electric equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113383456A (en) * | 2020-11-26 | 2021-09-10 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| CN113383456B (en) * | 2020-11-26 | 2023-06-02 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| WO2022135282A1 (en) * | 2020-12-21 | 2022-06-30 | 珠海冠宇电池股份有限公司 | Battery |
| CN112635878A (en) * | 2021-01-19 | 2021-04-09 | 广东至力科技有限公司 | Miniature lithium ion battery with welding protection washer |
| WO2022184081A1 (en) * | 2021-03-02 | 2022-09-09 | 珠海冠宇电池股份有限公司 | Battery |
| CN115332696A (en) * | 2022-10-11 | 2022-11-11 | 宁德新能源科技有限公司 | Battery and electric equipment |
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