CN111477796B - Button cell and preparation method thereof - Google Patents
Button cell and preparation method thereof Download PDFInfo
- Publication number
- CN111477796B CN111477796B CN202010364216.1A CN202010364216A CN111477796B CN 111477796 B CN111477796 B CN 111477796B CN 202010364216 A CN202010364216 A CN 202010364216A CN 111477796 B CN111477796 B CN 111477796B
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- steel sheet
- steel
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- cell
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 238
- 239000010959 steel Substances 0.000 claims abstract description 238
- 238000003466 welding Methods 0.000 claims description 47
- 239000012790 adhesive layer Substances 0.000 claims description 41
- 238000009413 insulation Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 20
- 210000004027 cell Anatomy 0.000 abstract 5
- 210000003850 cellular structure Anatomy 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 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
- 230000000694 effects Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000003292 glue Substances 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
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
Landscapes
- 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 cell and a preparation method thereof, wherein the button cell comprises a steel shell, a cell component and a steel sheet component, and an insulating gap is formed on the steel shell; the battery cell assembly comprises a soft package battery cell, a first tab and a second tab, wherein 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; the steel sheet subassembly includes first steel sheet and second steel sheet, first steel sheet weld in on the steel casing, the second lug weld in on the second steel sheet, the second steel sheet with insulating keep away a breach alignment setting, and first steel sheet with one end of second steel sheet is used for pegging graft jointly on outside electron device. The button battery is characterized in that the soft package battery core is arranged, so that compared with a laminated battery, the button battery is simpler in process and more convenient to process and assemble; through setting up insulating gap of keeping away on the steel casing, can avoid the in-process utmost point ear or steel sheet contact steel casing at the assembly to can avoid appearing the problem of short circuit.
Description
Technical Field
The invention relates to the field of button cells, in particular to a button cell and a preparation method thereof.
Background
Button cells are very common cells, small in size and multiple in model. The external dimension of the battery is similar to that of a battery with a small button, so the battery is also called a button battery. Most button cells are primary cells (non-rechargeable cells, also called primary cells), which are also dry cells, but are quite different from conventional dry cells with large and long cylindrical structures, such as first, second, third and fourth cells. Button cells are generally commonly known in both charged and uncharged forms, with charging including 3.6V rechargeable lithium ion button cells (LIR series), 3V rechargeable lithium ion button cells (ML or VL series); non-rechargeable including 3V lithium manganese coin cells (CR series) and 1.5V alkaline zinc manganese coin cells (LR and SR series).
However, the existing button cell is generally provided with a lamination structure cell, so that the manufacturing process is complex, and the production efficiency of the button cell 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 tab of the existing button cell is a pure nickel sheet, the material of the tab is soft, the button cell is not suitable for mechanical operation, the assembly is inconvenient, and the arbitrary assembly of the tab angle cannot be realized.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a button cell which is easy to process and convenient to assemble and can avoid the problem of short circuit and a preparation method thereof.
The aim of the invention is realized by the following technical scheme:
a button cell comprising:
the steel shell is provided with an insulating gap;
the battery cell assembly comprises a soft package battery cell, a first tab and a second tab, wherein 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; a kind of electronic device with high-pressure air-conditioning system
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 lug is welded on the second steel sheet, the second steel sheet and the insulation gap are aligned, and the plugging ends of the first steel sheet and the second steel sheet are used for being plugged on an external electronic device together.
In one embodiment, the first steel sheet comprises a welding sheet body and a first plug-in connection part, the welding sheet body is welded on the steel shell, and the welding sheet body is connected with the first plug-in connection part.
In one embodiment, the second steel sheet includes a circular welding portion, an extension portion and a second plugging portion, the circular welding portion is welded with the second lug, two ends of the extension portion are respectively connected with the circular welding portion and the second plugging portion, the second plugging portion is used for plugging on an electronic device, and the second plugging portion is located at a position above the insulation avoidance gap.
In one embodiment, the button cell further comprises a double-sided adhesive layer, wherein the double-sided adhesive layer is arranged between the circular welding part and the soft package battery cell.
In one embodiment, the button cell further comprises an adhesive layer, wherein one side surface of the adhesive layer is attached to the bottom of the steel shell, and one side surface of the adhesive layer, which is far away from the steel shell, is attached to the soft package battery cell.
In one embodiment, the button cell further comprises an insulating label patch 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-pack cell is greater than the thickness of the steel can housing.
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, carrying out opening operation on the steel shell to form an insulation gap, and carrying out gluing operation on the bottom of the steel shell to form an adhesive layer;
providing a battery cell assembly, wherein the battery cell assembly comprises a soft package battery cell, a first tab and a second tab which are connected with the soft package battery cell, and placing the soft package battery cell into the steel shell so as to enable the soft package battery cell 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, performing rubberizing operation on the second steel sheet so as 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 on the soft package electric core so as to align the second steel sheet with the insulation gap;
and 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.
Compared with the prior art, the invention has the following advantages:
1. compared with a laminated battery, the button battery and the preparation method thereof have the advantages that the process is simpler, and the processing and the assembly are more convenient; by arranging the insulating gap on the steel shell, the contact of the lug or the steel sheet with the steel shell in the assembly process can be avoided, so that the problem of short circuit can be avoided; in addition, through setting up the steel sheet, can conveniently assemble button cell to outside electron device on, the hardness of steel sheet is harder in addition in the utmost point ear, and the efficiency of assembly is faster to the angle of steel sheet can be adjusted according to actual need, further realizes the convenience of assembly.
2. According to the invention, the adhesive layer is coated at the bottom of the inner side of the steel shell, when the soft-package battery core is attached and placed in the steel shell, the condition that the battery core shakes left and right in the steel shell can be avoided, and the soft-package battery core is arranged, so that the assembly is more convenient and the efficiency is faster. Therefore, the situation that the battery cell and the steel shell are short-circuited can be prevented by arranging the adhesive layer.
3. According to the invention, the second steel sheet can be attached to the soft package battery core through the double-sided adhesive layer, 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 firm. Moreover, the angle of the steel sheet can be fixed by adopting the adhesion of the double-sided adhesive layer, the adhesion is ensured to be smoother, a convex structure cannot appear, and after the adhesion of the double-sided adhesive layer, the adhesive dispensing treatment is performed on the periphery of the second steel sheet again, so that the steel sheet can be prevented from being separated from the battery cell to be tilted, and the assembly is influenced.
4. Through setting up insulating label paster, can make second ear and second steel sheet covered by insulating label for after the battery assembly, can not make second ear and second steel sheet appear the condition of short circuit with outside electron device, when conveniently assembling, can prevent the condition of short circuit, realized the condition of preventing the short circuit of bilayer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a button cell according to an embodiment of the present invention;
FIG. 2 is a schematic view of the button cell of FIG. 1 at another angle;
fig. 3 is a schematic structural view of a button cell according to another embodiment shown in fig. 1;
fig. 4 is a schematic structural view of a steel case of the button cell shown in fig. 1;
fig. 5 is a schematic structural view 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 present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. 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 "fixed 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 are used herein for illustrative purposes only and are not meant to be the only embodiment.
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. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a button cell includes: the steel shell 100, the battery core assembly 200 and the steel sheet assembly 300 are used for wrapping the battery core, so that the protection effect is achieved, and the steel sheet can be welded, so that the connection range or the connection angle of the tab can be prolonged; the battery cell assembly 200 is of a soft-package-coated battery cell 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 soft-package battery cell is simpler in process and more convenient to process and assemble; by arranging the insulating gap on the steel shell, the contact of the lug or the steel sheet with the steel shell in the assembly process can be avoided, so that the problem of short circuit can be avoided; in addition, through setting up the steel sheet, can conveniently assemble button cell to outside electron device on, the hardness of steel sheet is harder in addition in the utmost point ear, and the efficiency of assembly is faster to the angle of steel sheet can be adjusted according to actual need, further realizes the convenience of assembly.
It should be noted that referring to fig. 1, the steel shell 100 is provided with an insulation gap 110. It should be noted that, the insulating gap 110 is used for avoiding the steel sheet, that is, when the battery is assembled, the steel sheet connected with the tab may contact the steel shell, so that a short circuit occurs, and by providing the insulating gap 110 on the steel shell, the problem that the steel sheet is not in contact with the steel shell even if the steel sheet is pressed down in the assembly process can be effectively avoided, so that the short circuit problem can be effectively avoided.
Referring to fig. 2, the battery cell assembly 200 includes a soft package battery cell 210, a first tab 220 and a second tab 230, wherein 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 realizing the output of the power supply, and the soft-package battery cell can simplify the processing procedure; the first tab 220 and the second tab 230 are respectively a positive tab or a negative tab, and this tab, which is actually which tab, can be adjusted according to the needs of the customer.
Referring to fig. 1 and 3, the steel sheet assembly 300 includes a first steel sheet 310 and a second steel sheet 320, the first steel sheet is welded on the steel shell, the second lug is welded on the second steel sheet, the second steel sheet is aligned with the insulation gap, and one ends of the first steel sheet and the second steel sheet are used for being plugged together on an external electronic device. It should be noted that, the first steel sheet 310 is configured to be connected to the first tab, so as to extend the first tab; the second steel sheet 320 is used for being connected with the second lug, and the second lug is extended, so that the second steel sheet can be inserted into an external electronic device, and assembly is convenient.
Referring to fig. 3, the first steel sheet 310 includes a welding sheet 311 and a first plugging portion 312, wherein the welding sheet is welded on the steel shell, and the welding sheet is connected with the first plugging portion. It should be noted that, the welding sheet 311 is used for being welded on the steel shell, so that the steel shell is electrically connected with the welding sheet, and since the first tab is welded on the steel shell and the welding sheet is 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. The first plug-in part 312 and the welding sheet body are integrally formed, and the first plug-in part and the welding sheet body are vertically arranged, so that the welding sheet body welded on the upper surface of the steel shell can be bent to realize 90-degree downward plug-in, and the first and second steel sheets are plugged in an external electronic device together, thereby being convenient to assemble and improving the assembly efficiency.
Referring to fig. 2, the second steel sheet 320 includes a circular welding portion 321, an extension portion 322, and a second plugging portion 323, wherein the circular welding portion is welded to the second lug, two ends of the extension portion are respectively connected to the circular welding portion and the second plugging portion, the second plugging portion is configured to be plugged into an electronic device, and the second plugging portion is located above the insulating gap. It should be noted that, the circular welding portion 321 is used for being attached to the soft package battery core, and by setting a circular structure, the welding portion does not have edges and corners, and does not stab or scratch the soft package battery core, so as to protect the battery core, and by setting a circular structure, the circular welding portion has a larger stress surface, so that the second lug is more convenient and stable when being welded on the second steel sheet; the extension part 322 is used for connecting the circular welding part and the second plug-in part; the second plugging portion 323 is configured to be plugged onto an external electronic device, and specifically, the second plugging portion and the extension portion are disposed perpendicular to each other, so that plugging can be conveniently performed.
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 cell. 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 simultaneously, 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 firm. Moreover, the angle of the steel sheet can be fixed by adopting the adhesion of the double-sided adhesive layer, the adhesion is ensured to be smoother, a convex structure cannot appear, and after the adhesion of the double-sided adhesive layer, the adhesive dispensing treatment is performed on the periphery of the second steel sheet again, so that the steel sheet can be prevented from being separated from the battery cell to be tilted, and the assembly is influenced.
Referring to fig. 2, the button cell further includes an adhesive layer 500, wherein a side surface of the adhesive layer 500 is attached to the bottom of the steel can, and a side surface of the adhesive layer 500 away from the steel can is attached to the soft-package battery core. It should be noted that, the adhesive layer 500 is used for coating the bottom of the inner side of the steel shell, when the soft package battery cell is attached to be placed in the steel shell, the condition that the battery cell shakes left and right in the steel shell can be avoided, and in addition, the soft package battery cell is arranged, so that the assembly is more convenient, and the efficiency is faster. Thus, the situation that the battery cell and the steel shell are short-circuited can be prevented by arranging the adhesive layer 500.
Note that referring to fig. 5, the button cell further includes an insulating label patch 600, and the insulating label patch is attached to the second steel sheet. Preferably, the insulating label patch is a two-dimensional code label patch. So, through setting up insulating label paster, can make second pole ear and second steel sheet covered by insulating label for after the battery assembly, can not make second pole ear and second steel sheet appear the condition of short circuit with outside electron device, when conveniently assembling, can prevent the condition of short circuit, realized the condition of preventing the short circuit of bilayer.
It should be noted that the thickness of the soft-package battery core is greater than the thickness of the steel shell. In the processing process, the height of the soft-package battery core is higher than the height of the side wall of the steel shell, so that the second steel sheet on the soft-package battery core is not electrically connected with the steel shell, and the short circuit condition is avoided; and the soft-package battery core is higher than the steel shell, so that the soft-package battery core is more convenient to plug in during assembly, short circuit can not occur, and the safety of battery assembly is improved. Specifically, the thickness of the steel shell is the thickness of the steel shell, or the thickness of the steel shell can be understood as the thickness of the steel shell.
It should be noted that, one end of the first tab is connected with the soft package battery 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. So, through setting up the first tab and extend the back along the lateral wall of steel shell for first tab welding is on the upper surface of steel shell, thereby can realize the electric connection of first tab and steel shell, simultaneously after first steel sheet welding is on the steel shell, make first tab and first steel sheet carry out the electric connection, realized external output power supply function.
In this embodiment, a plurality of insulation clearance gaps are formed on the steel shell. Therefore, the problem of short circuit can be effectively avoided and the safety of the battery is improved by arranging a plurality of insulating gap avoidance holes.
Referring to fig. 6, the invention further provides a preparation method of the button cell, comprising the following steps:
s110, providing a steel shell, carrying out opening operation on the steel shell to form an insulation clearance gap, and carrying out gluing operation on the bottom of the steel shell to form an adhesive layer.
It should be noted that, when the steel shell is opened, the insulating gap is finally formed, so that the steel sheet can be prevented from being damaged, namely, when the battery is assembled, the steel sheet connected with the tab is likely to contact the steel shell, so that the short circuit occurs, and when the insulating gap 110 is formed on the steel shell, the problem that the steel sheet is not contacted with the steel shell even if the steel sheet is pressed down in the assembly process can be effectively avoided.
S120, providing a battery cell assembly, wherein the battery cell assembly comprises a soft package battery cell, a first tab and a second tab which are connected with the soft package battery cell, and placing the soft package battery cell into the steel shell so that the soft package battery cell is attached to the adhesive layer.
It should be noted that, in order to facilitate the assembly of the battery, to improve the production efficiency, the original lamination cell is changed into a soft package cell covered by a soft package, so that the processing procedure can be simplified, the production efficiency of the button battery is improved, and the necessary power supply can be provided for the external electronic device by arranging the positive and negative lugs. Further, with the inboard bottom of bonding glue film coating at the steel casing, when soft packet of electric core is attached to be placed in the steel casing, then can avoid the electric core to appear controlling the condition of rocking in the steel casing, moreover, through setting up soft packet of electric core, also can make more convenient in the assembly, efficiency is faster. Therefore, the situation that the battery cell and the steel shell are short-circuited can be prevented by arranging the adhesive layer.
S130, providing a steel sheet assembly, wherein the steel sheet assembly comprises a first steel sheet and a second steel sheet, performing rubberizing operation on the second steel sheet so as to form a double-sided adhesive layer on the second steel sheet, and attaching the second steel sheet attached with the double-sided adhesive layer on the soft package electric core so as to enable the second steel sheet to be aligned with the insulation gap.
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 is used for being inserted into an external electronic device, so that quick assembly is realized. And through setting up the double faced adhesive tape, can attach the second steel sheet on soft packet of electric core, simultaneously, when welding the second lug on the second steel sheet, can fix the position of second lug for the second lug can be welded with the second steel sheet, can also make the structure of utmost point lug more stable more firm. Moreover, the angle of the steel sheet can be fixed by adopting the adhesion of the double-sided adhesive layer, the adhesion is ensured to be smoother, a convex structure cannot appear, and after the adhesion of the double-sided adhesive layer, the adhesive dispensing treatment is performed on the periphery of the second steel sheet again, so that the steel sheet can be prevented from being separated from the battery cell to be tilted, and the assembly is influenced.
And S140, welding the second tab on the second steel sheet, welding the first tab on the steel shell, and welding the first steel sheet on the outer surface of the steel shell to obtain the button cell.
The second lug and the second steel sheet are welded, so that the second lug and the second steel sheet are electrically connected, and finally the button cell is conveniently inserted into an external electronic device. Therefore, compared with a laminated battery, the soft-package battery cell is simpler in process and more convenient to process and assemble; by arranging the insulating gap on the steel shell, the contact of the lug or the steel sheet with the steel shell in the assembly process can be avoided, so that the problem of short circuit can be avoided; in addition, through setting up the steel sheet, can conveniently assemble button cell to outside electron device on, the hardness of steel sheet is harder in addition in the utmost point ear, and the efficiency of assembly is faster to the angle of steel sheet can be adjusted according to actual need, further realizes the convenience of assembly.
Compared with the prior art, the invention has the following advantages:
compared with a laminated battery, the button battery and the preparation method thereof have the advantages that the process is simpler, and the processing and the assembly are more convenient; by arranging the insulating gap on the steel shell, the contact of the lug or the steel sheet with the steel shell in the assembly process can be avoided, so that the problem of short circuit can be avoided; in addition, through setting up the steel sheet, can conveniently assemble button cell to outside electron device on, the hardness of steel sheet is harder in addition in the utmost point ear, and the efficiency of assembly is faster to the angle of steel sheet can be adjusted according to actual need, further realizes the convenience of assembly.
The above embodiments represent only a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. A button cell, characterized in that the button cell comprises:
the steel shell is provided with an insulating gap;
the battery cell assembly comprises a soft package battery cell, a first tab and a second tab, wherein 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; a kind of electronic device with high-pressure air-conditioning system
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 lug is welded on the second steel sheet, the second steel sheet is aligned with the insulating gap, and the plugging ends of the first steel sheet and the second steel sheet are used for being plugged on an external electronic device together;
the first steel sheet comprises a welding sheet body and a first inserting part, the welding sheet body is welded on the steel shell, the welding sheet body is connected with the first inserting part, the welding sheet body is welded on the steel shell so as to enable the steel shell to be electrically connected with the welding sheet body, the first inserting part and the welding sheet body are integrally formed, and the first inserting part and the welding sheet body are vertically arranged;
the second steel sheet comprises a circular welding part, an extension part and a second plug-in part, the circular welding part is welded with the second lug, two ends of the extension part are respectively connected with the circular welding part and the second plug-in part, the second plug-in part is used for being plugged on an electronic device, and the second plug-in part is positioned above the insulation gap;
the button battery further comprises a double-sided adhesive layer, wherein the double-sided adhesive layer is arranged between the circular welding part and the soft package battery core, and the double-sided adhesive layer is used for attaching the second steel sheet to the soft package battery core;
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.
2. The button cell of claim 1, further comprising an adhesive layer, wherein one side of the adhesive layer is attached to the bottom of the steel can, and wherein one side of the adhesive layer, remote from the steel can, is attached to the pouch cell.
3. The button cell of claim 1 further comprising an insulating label patch attached to the second steel sheet.
4. The button cell defined in claim 3, wherein the insulating label patch is a two-dimensional code label patch.
5. The button cell of claim 1, wherein the thickness of the soft pack cell is greater than the thickness of the steel can housing.
6. A method of making a button cell as defined in any one of claims 1-5, comprising the steps of:
providing a steel shell, carrying out opening operation on the steel shell to form an insulation gap, and carrying out gluing operation on the bottom of the steel shell to form an adhesive layer;
providing a battery cell assembly, wherein the battery cell assembly comprises a soft package battery cell, a first tab and a second tab which are connected with the soft package battery cell, and placing the soft package battery cell into the steel shell so as to enable the soft package battery cell 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, performing rubberizing operation on the second steel sheet so as 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 on the soft package electric core so as to align the second steel sheet with the insulation gap;
and 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.
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| WO2022041004A1 (en) * | 2020-08-26 | 2022-03-03 | 宁德新能源科技有限公司 | Battery and electronic device that applies battery |
| CN112510303B (en) * | 2020-12-02 | 2023-03-17 | 新余赣锋电子有限公司 | Button cell and electrode assembly connecting method thereof |
| CN112886047A (en) * | 2021-02-07 | 2021-06-01 | 惠州市德能电池有限公司 | Button cell and manufacturing method thereof |
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