CN111477796A - Button cell and preparation method thereof - Google Patents
Button cell and preparation method thereof Download PDFInfo
- Publication number
- CN111477796A CN111477796A CN202010364216.1A CN202010364216A CN111477796A CN 111477796 A CN111477796 A CN 111477796A CN 202010364216 A CN202010364216 A CN 202010364216A CN 111477796 A CN111477796 A CN 111477796A
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- Prior art keywords
- steel sheet
- steel
- tab
- soft
- shell
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- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 218
- 239000010959 steel Substances 0.000 claims abstract description 218
- 238000009413 insulation Methods 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims description 42
- 239000012790 adhesive layer Substances 0.000 claims description 31
- 239000003292 glue Substances 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XIKYYQJBTPYKSG-UHFFFAOYSA-N nickel Chemical compound [Ni].[Ni] XIKYYQJBTPYKSG-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/216—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for button or coin cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/598—Guarantee labels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a button battery and a preparation method thereof, wherein the button battery comprises a steel shell, a battery core assembly and a steel sheet assembly, wherein the steel shell is provided with an insulation avoiding gap; the electric core assembly comprises a soft-package electric core, a first tab and a second tab, the first tab and the second tab are respectively arranged on the soft-package electric core, and the first tab is welded on the steel shell; the steel sheet subassembly includes first steel sheet and second steel sheet, first steel sheet weld in on the steel casing, the second utmost point ear weld in on the second steel sheet, the second steel sheet with the setting of keeping away a breach alignment in the insulation, and first steel sheet with the one end of second steel sheet is used for pegging graft jointly on the electron device of outside. Compared with a laminated battery, the button battery provided by the invention has the advantages that the process is simpler, and the processing and the assembly are more convenient by arranging the soft package battery core; through set up the insulating position breach of keeping away on the box hat, can avoid utmost point ear or steel sheet contact box hat at the in-process of assembly to can avoid appearing the problem of short circuit.
Description
Technical Field
The invention relates to the field of button batteries, in particular to a button battery and a preparation method thereof.
Background
Button cells are generally known to have two types of charging and non-charging, including 3.6V rechargeable lithium ion button cells (L IR series), 3V rechargeable lithium ion button cells (M L or V L series), and non-charging including 3V lithium manganese button cells (CR series) and 1.5V alkaline zinc manganese button cells (L R and SR series).
However, the existing button battery generally has a battery cell with a laminated structure, so that the manufacturing process is complex, and the production efficiency of the button battery is reduced; moreover, the steel shell of the existing battery is easy to touch the steel sheet, so that the problem of short circuit is easy to occur; in addition, the lug of the conventional button battery is a pure nickel-nickel sheet, is soft in material, is not suitable for mechanical operation, is inconvenient to assemble, and cannot be assembled at any angle.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a button cell which is easy to process and assemble and avoids the short circuit problem and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
a button cell, comprising:
the steel shell is provided with an insulation avoiding gap;
the battery core assembly comprises a soft-package battery cell, a first tab and a second tab, the first tab and the second tab are respectively arranged on the soft-package battery cell, and the first tab is welded on the steel shell; and
the steel sheet assembly comprises a first steel sheet and a second steel sheet, the first steel sheet is welded on the steel shell, the second pole lug is welded on the second steel sheet, the second steel sheet and the insulation avoiding gap are arranged in an aligned mode, and the inserting ends of the first steel sheet and the second steel sheet are used for being jointly inserted into an external electronic device.
In one embodiment, the first steel sheet comprises a welding sheet body and a first plug part, the welding sheet body is welded on the steel shell, and the welding sheet body is connected with the first plug part.
In one embodiment, the second steel sheet includes a circular welding portion, an extending portion, and a second inserting portion, the circular welding portion is welded to the second tab, two ends of the extending portion are respectively connected to the circular welding portion and the second inserting portion, the second inserting portion is used for being inserted into an electronic device, and the second inserting portion is located above the insulation avoiding gap.
In one embodiment, the button cell further comprises a double-sided adhesive layer, and the double-sided adhesive layer is arranged between the circular welding portion and the soft package battery core.
In one embodiment, the button cell further comprises an adhesive layer, one side of the adhesive layer is attached to the bottom of the steel shell, and the side of the adhesive layer away from the steel shell is attached to the soft-package battery core.
In one embodiment, the button cell further comprises an insulating label patch, and the insulating label patch is attached to the second steel sheet.
In one embodiment, the insulating label patch is a two-dimensional code label patch.
In one embodiment, the thickness of the soft package cell is greater than that of the steel shell.
In one embodiment, one end of the first tab is connected with the soft package battery cell, the other end of the first tab extends to the top of the steel shell, and the other end of the first tab is welded on the steel shell.
The invention also provides a preparation method of the button cell, which comprises the following steps:
providing a steel shell, opening the steel shell to form an insulation avoiding gap, and gluing the bottom of the steel shell to form a bonding glue layer;
providing an electric core assembly, wherein the electric core assembly comprises a soft-package electric core, a first tab and a second tab, the first tab and the second tab are connected with the soft-package electric core, and the soft-package electric core is placed into the steel shell so as to be attached to the adhesive layer;
providing a steel sheet assembly, wherein the steel sheet assembly comprises a first steel sheet and a second steel sheet, gluing the second steel sheet to form a double-sided adhesive layer on the second steel sheet, and attaching the second steel sheet coated with the double-sided adhesive layer to the soft package battery core to align the second steel sheet with the insulation clearance;
and welding the second pole lug on the second steel sheet, welding the first pole lug on the steel shell, and welding the first steel sheet on the outer surface of the steel shell to obtain the button cell.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. compared with a laminated battery, the button battery is simpler in process and more convenient to process and assemble by arranging the soft package battery core; the insulation avoiding gap is arranged on the steel shell, so that a lug or a steel sheet can be prevented from contacting the steel shell in the assembling process, and the problem of short circuit can be avoided; in addition, the button cell can be conveniently assembled on an external electronic device through the steel sheet, the hardness of the steel sheet is harder compared with that of the lug, the assembling efficiency is higher, the angle of the steel sheet can be adjusted according to actual needs, and the assembling convenience is further realized.
2. According to the invention, the bonding glue layer is coated on the bottom of the inner side of the steel shell, when the soft-package battery cell is attached and placed in the steel shell, the battery cell can be prevented from shaking left and right in the steel shell, and the soft-package battery cell is arranged, so that the assembly is more convenient and the efficiency is higher. So, can prevent the condition that electric core and box hat short circuit from appearing through setting up the bonding glue film.
3. According to the invention, the double-sided adhesive layer is arranged, so that the second steel sheet can be attached to the soft package battery core, and meanwhile, when the second lug is welded on the second steel sheet, the position of the second lug can be fixed, so that the second lug can be welded with the second steel sheet, and the structure of the lug can be more stable and firmer. Moreover, adopt double-sided adhesive layer's attached, can fix the angle of steel sheet, guarantee attached more level and smooth, bellied structure can not appear to in double-sided adhesive layer attached back, carry out the point again and glue at the second steel sheet periphery and handle, thereby can prevent that the steel sheet from breaking away from electric core and perk, influence the assembly.
4. Through setting up the insulating label paster, can be so that second utmost point ear and second steel sheet are covered by insulating label for after the battery assembly, can not make the condition that the short circuit appears in second utmost point ear and second steel sheet and outside electron device, when conveniently assembling, can prevent the condition of short circuit, realized the condition of double-deck short circuit of preventing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a button cell according to an embodiment of the invention;
FIG. 2 is a schematic view of another angle button cell shown in FIG. 1;
FIG. 3 is a schematic structural view of another embodiment of the button cell shown in FIG. 1;
FIG. 4 is a schematic structural diagram of a steel shell of the button cell shown in FIG. 1;
FIG. 5 is a schematic structural diagram of a button cell according to another embodiment of the present invention;
fig. 6 is a flowchart of a method for manufacturing a button cell according to an embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a button cell includes: the tab connecting structure comprises a steel shell 100, an electric core assembly 200 and a steel sheet assembly 300, wherein the steel shell 100 is used for wrapping an electric core to play a role in protection, and can also realize steel sheet welding, so that the connection range or connection angle of a tab can be extended; the battery core assembly 200 is of a soft-package-coated battery core structure, so that the assembly can be conveniently carried out, and the processing efficiency is improved; the steel sheet assembly 300 is used for conveniently plugging an external electronic device. Therefore, compared with a laminated battery, the laminated battery is simpler in process and more convenient to process and assemble by arranging the soft package battery core; the insulation avoiding gap is arranged on the steel shell, so that a lug or a steel sheet can be prevented from contacting the steel shell in the assembling process, and the problem of short circuit can be avoided; in addition, the button cell can be conveniently assembled on an external electronic device through the steel sheet, the hardness of the steel sheet is harder compared with that of the lug, the assembling efficiency is higher, the angle of the steel sheet can be adjusted according to actual needs, and the assembling convenience is further realized.
Please refer to fig. 1, an insulation gap 110 is formed on the steel shell 100. It should be noted that, the insulating position-avoiding notch 110 is used for avoiding the position of the steel sheet, that is, in the process of assembling the battery, the steel sheet connected with the tab may contact the steel shell, so that the short circuit occurs, and the insulating position-avoiding notch 110 is formed in the steel shell, so that the problem that the steel sheet is in the assembling process, even if the steel sheet is pressed down, the steel shell is not in contact with the steel sheet, so that the short circuit can be effectively avoided.
Referring to fig. 2, the battery assembly 200 includes a soft-package battery cell 210, a first tab 220 and a second tab 230, where the first tab and the second tab are respectively disposed on the soft-package battery cell, and the first tab is welded on the steel shell. It should be noted that the soft-package battery cell 210 is used for outputting a power supply, and the processing procedure of the soft-package battery cell can be simplified; the first tab 220 and the second tab 230 are respectively a positive tab or a negative tab, and the actual tab of which one of the two tabs is can be adjusted according to the needs of a customer.
Referring to fig. 1 and 3, the steel sheet assembly 300 includes a first steel sheet 310 welded to the steel shell, and a second steel sheet 320, the second tab is welded to the second steel sheet, the second steel sheet is aligned with the insulation clearance gap, and one end of the first steel sheet and one end of the second steel sheet are used for being jointly plugged into an external electronic device. The first steel sheet 310 is used for being connected with a first tab, so as to extend the first tab; the second steel sheet 320 is used for connecting with the second pole ear, and extends the second pole ear, so that the second steel sheet can be inserted into an external electronic device, and the assembly is convenient.
Referring to fig. 3, the first steel plate 310 includes a welding plate 311 welded to the steel shell and a first inserting portion 312 connected to the welding plate. It should be noted that the welding sheet 311 is used for welding on the steel shell so as to electrically connect the steel shell and the welding sheet, and since the first tab is welded on the steel shell and the welding sheet is also welded on the steel shell, the first steel sheet and the first tab can be conducted, that is, the first steel sheet can be used as an electrode to supply power to the outside. First grafting portion 312 sets up with welding lamellar body integrated into one piece, and first grafting portion with the welding lamellar body sets up perpendicularly to can make the welding lamellar body of welding at the box hat upper surface through buckling the back, can realize 90 grafting downwards, and realize grafting on the electron device of outside jointly with the second steel sheet, thereby conveniently assemble, improve the efficiency of assembly.
Referring to fig. 2, the second steel sheet 320 includes a circular welding portion 321, an extending portion 322, and a second inserting portion 323, the circular welding portion is welded to the second tab, two ends of the extending portion are respectively connected to the circular welding portion and the second inserting portion, the second inserting portion is used for being inserted into the electronic device, and the second inserting portion is located above the insulation avoiding gap. It should be noted that the circular welding portion 321 is used for being attached to a soft-package battery cell, and by arranging the circular structure, the welding portion does not have a corner, and does not stab or scratch the soft-package battery cell, so as to protect the battery cell; the extension part 322 is used for connecting the circular welding part and the second plug part; the second insertion part 323 is used for being inserted into an external electronic device, and specifically, the second insertion part and the extension part are perpendicular to each other, so that the second insertion part and the extension part can be conveniently inserted.
Referring to fig. 4, the button cell further includes a double-sided adhesive layer 400, and the double-sided adhesive layer 400 is disposed between the circular welding portion and the soft package battery core. It should be noted that the double-sided adhesive layer 400 is used for attaching the second steel sheet to the soft package battery core, and meanwhile, when the second tab is welded to the second steel sheet, the position of the second tab can be fixed, so that the second tab can be welded to the second steel sheet, and the structure of the tab can be more stable and firmer. Moreover, adopt double-sided adhesive layer's attached, can fix the angle of steel sheet, guarantee attached more level and smooth, bellied structure can not appear to in double-sided adhesive layer attached back, carry out the point again and glue at the second steel sheet periphery and handle, thereby can prevent that the steel sheet from breaking away from electric core and perk, influence the assembly.
Referring to fig. 2, the button cell further includes an adhesive layer 500, one side of the adhesive layer 500 is attached to the bottom of the steel case, and one side of the adhesive layer 500 away from the steel case is attached to the soft package battery core. It should be noted that, the bonding glue film 500 is used for coating in the inboard bottom of box hat, when the attached placing in the box hat of soft-packaged electrical core, then can avoid electric core to appear controlling the condition of rocking in the box hat, moreover, through setting up soft-packaged electrical core, also can make more convenient in the assembly, efficiency is faster. So, can prevent the condition of short circuit from appearing in electric core and box hat through setting up bonding glue film 500.
Please refer to fig. 5, the button cell further includes an insulating tag patch 600 attached to the second steel sheet. Preferably, the insulating tag patch is a two-dimensional code tag patch. So, through setting up the insulating label paster, can be so that second utmost point ear and second steel sheet are covered by insulating label for after the battery assembly, can not make the condition that the short circuit appears in second utmost point ear and second steel sheet and outside electron device, when conveniently assembling, can prevent the condition of short circuit, realized the condition of bilayer preventing the short circuit.
It should be noted that the thickness of the soft package battery cell is greater than the thickness of the steel shell casing. In the processing process, the height of the soft-package battery cell is higher than that of the side wall of the steel shell, so that the second steel sheet on the soft-package battery cell cannot be electrically connected with the steel shell, and the short circuit condition cannot occur; and through being higher than the steel casing with the laminate polymer core, can be so that when assembling, more conveniently peg graft, the short circuit can not appear yet, has improved the security of battery assembly. In particular, the thickness of the steel shell is the thickness of the steel shell, or can be understood as the thickness of the shell of the steel shell.
It should be noted that one end of the first tab is connected to the soft-package battery cell, the other end of the first tab extends to the top of the steel shell, and the other end of the first tab is welded to the steel shell. So, through setting up first utmost point ear and extending the back along the lateral wall of box hat for first utmost point ear welding is on the upper surface of box hat, thereby can realize the electricity of first utmost point ear and box hat and connect, and the back is welded on the box hat at first steel sheet simultaneously for first utmost point ear and first steel sheet carry out the electricity and connect, have realized external output power supply function.
In this embodiment, a plurality of insulation avoiding notches are formed in the steel shell. So, keep away a breach through setting up a plurality of insulations, can avoid the problem of short circuit effectively appearing, improve the security of battery.
Referring to fig. 6, the present invention further provides a method for manufacturing a button cell, including the following steps:
s110, providing a steel shell, opening the steel shell to form an insulation avoidance gap, and gluing the bottom of the steel shell to form a bonding glue layer.
It should be noted that, carrying out the opening operation to the steel casing, finally formed insulating and kept away a breach, can realize keeping away the position to the steel sheet, promptly when the battery assembling process, probably can make the steel sheet of being connected with utmost point ear can contact the steel casing to the condition of short circuit appears, and keep away a breach 110 through having seted up insulating on the steel casing, then can avoid such problem effectively, the steel sheet is in the assembling process promptly, even the steel sheet is pushed down the back, also can not make steel casing and steel sheet contact, thereby can avoid the problem of short circuit effectively.
S120, provide the electric core subassembly, the electric core subassembly include soft-packaged electrical core, and with first utmost point ear and second utmost point ear that soft-packaged electrical core connects will soft-packaged electrical core puts into in the box hat, so that soft-packaged electrical core attached in on the bonding glue film.
It should be noted that, in order to facilitate the assembly of the battery and improve the production efficiency, the original laminated battery cell is changed into a soft-package battery cell covered by a soft package, so that the processing procedure can be simplified and the production efficiency of the button battery can be improved. Further, to bond the glue film coating in the inboard bottom of box hat, when the attached placing in the box hat of soft-packaged electrical core, then can avoid electric core to appear controlling the condition of rocking in the box hat, moreover, through setting up soft-packaged electrical core, also can make more convenient in the assembly, efficiency is faster. So, can prevent the condition that electric core and box hat short circuit from appearing through setting up the bonding glue film.
S130, a steel sheet assembly is provided, the steel sheet assembly comprises a first steel sheet and a second steel sheet, and the second steel sheet is subjected to adhesive tape pasting operation, so that a double-sided adhesive layer is formed on the second steel sheet, the second steel sheet attached with the double-sided adhesive layer is attached to the soft-package battery core, and the second steel sheet is aligned with the insulation avoiding notch.
The first steel sheet is used for being electrically connected with the first tab, and the second steel sheet is used for being electrically connected with the second tab and being plugged onto an external electronic device, so that rapid assembly is realized. And through setting up double-sided adhesive layer, can attach the second steel sheet on soft-packaged electrical core, simultaneously, when welding the second utmost point ear on the second steel sheet, can fix the position of second utmost point ear for the second utmost point ear can weld with the second steel sheet, can also make the structure of utmost point ear more stable more firm. Moreover, adopt double-sided adhesive layer's attached, can fix the angle of steel sheet, guarantee attached more level and smooth, bellied structure can not appear to in double-sided adhesive layer attached back, carry out the point again and glue at the second steel sheet periphery and handle, thereby can prevent that the steel sheet from breaking away from electric core and perk, influence the assembly.
S140, welding the second tab to the second steel sheet, welding the first tab to the steel shell, and welding the first steel sheet to the outer surface of the steel shell to obtain the button cell.
The second tab and the second steel sheet are welded, so that the second tab and the second steel sheet can be electrically connected, and finally the button cell can be conveniently inserted into an external electronic device, and finally the button cell is obtained. Therefore, compared with a laminated battery, the laminated battery is simpler in process and more convenient to process and assemble by arranging the soft package battery core; the insulation avoiding gap is arranged on the steel shell, so that a lug or a steel sheet can be prevented from contacting the steel shell in the assembling process, and the problem of short circuit can be avoided; in addition, the button cell can be conveniently assembled on an external electronic device through the steel sheet, the hardness of the steel sheet is harder compared with that of the lug, the assembling efficiency is higher, the angle of the steel sheet can be adjusted according to actual needs, and the assembling convenience is further realized.
Compared with the prior art, the invention has the following advantages and beneficial effects:
compared with a laminated battery, the button battery is simpler in process and more convenient to process and assemble by arranging the soft package battery core; the insulation avoiding gap is arranged on the steel shell, so that a lug or a steel sheet can be prevented from contacting the steel shell in the assembling process, and the problem of short circuit can be avoided; in addition, the button cell can be conveniently assembled on an external electronic device through the steel sheet, the hardness of the steel sheet is harder compared with that of the lug, the assembling efficiency is higher, the angle of the steel sheet can be adjusted according to actual needs, and the assembling convenience is further realized.
The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A button cell, comprising:
the steel shell is provided with an insulation avoiding gap;
the battery core assembly comprises a soft-package battery cell, a first tab and a second tab, the first tab and the second tab are respectively arranged on the soft-package battery cell, and the first tab is welded on the steel shell; and
the steel sheet assembly comprises a first steel sheet and a second steel sheet, the first steel sheet is welded on the steel shell, the second pole lug is welded on the second steel sheet, the second steel sheet and the insulation avoiding gap are arranged in an aligned mode, and the inserting ends of the first steel sheet and the second steel sheet are used for being jointly inserted into an external electronic device.
2. The button cell according to claim 1, wherein the first steel sheet includes a welding sheet and a first plug portion, the welding sheet is welded to the steel case, and the welding sheet is connected to the first plug portion.
3. The button cell according to claim 1, wherein the second steel sheet includes a circular welding portion, an extending portion, and a second insertion portion, the circular welding portion is welded to the second tab, two ends of the extending portion are respectively connected to the circular welding portion and the second insertion portion, the second insertion portion is used for being inserted into an electronic device, and the second insertion portion is located above the insulation avoiding gap.
4. The button cell of claim 3, further comprising a double-sided adhesive layer disposed between the circular weld and the pouch core.
5. The button battery according to claim 1, further comprising an adhesive layer, wherein one side of the adhesive layer is attached to the bottom of the steel shell, and the other side of the adhesive layer away from the steel shell is attached to the soft-packaged electric core.
6. The button cell of claim 1, further comprising an insulating label patch that is affixed to the second steel sheet.
7. The button cell of claim 6, wherein the insulating label patch is a two-dimensional code label patch.
8. The button cell of claim 1, wherein the thickness of the flexible package cell is greater than the thickness of the steel can shell.
9. The button battery as claimed in claim 1, wherein one end of the first tab is connected with the soft package core, the other end of the first tab extends to the top of the steel shell, and the other end of the first tab is welded on the steel shell.
10. A preparation method of a button cell is characterized by comprising the following steps:
providing a steel shell, opening the steel shell to form an insulation avoiding gap, and gluing the bottom of the steel shell to form a bonding glue layer;
providing an electric core assembly, wherein the electric core assembly comprises a soft-package electric core, a first tab and a second tab, the first tab and the second tab are connected with the soft-package electric core, and the soft-package electric core is placed into the steel shell so as to be attached to the adhesive layer;
providing a steel sheet assembly, wherein the steel sheet assembly comprises a first steel sheet and a second steel sheet, gluing the second steel sheet to form a double-sided adhesive layer on the second steel sheet, and attaching the second steel sheet coated with the double-sided adhesive layer to the soft package battery core to align the second steel sheet with the insulation clearance;
and welding the second pole lug on the second steel sheet, welding the first pole lug on the steel shell, and welding the first steel sheet on the outer surface of the steel shell to obtain the button cell.
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| CN202010364216.1A CN111477796B (en) | 2020-04-30 | 2020-04-30 | Button cell and preparation method thereof |
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