CN111200098A - Button battery pin and welding method thereof - Google Patents
Button battery pin and welding method thereof Download PDFInfo
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- CN111200098A CN111200098A CN202010018570.9A CN202010018570A CN111200098A CN 111200098 A CN111200098 A CN 111200098A CN 202010018570 A CN202010018570 A CN 202010018570A CN 111200098 A CN111200098 A CN 111200098A
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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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
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The pin comprises a lead, wherein the lead is a single wire core lead, is made of a single metal or alloy material with a melting point close to that of a battery steel shell, and is connected with the battery steel shell in a welding way through a welding needle; starting welding after the lead is processed: preparing a hole sealing coating by adopting asphalt-based aluminum paste, mineral alcohol and hydrotalcite, coating the hole sealing coating on the welding position of a battery steel shell, welding a lead with the battery steel shell by adopting an electric welding machine, and coating the hole sealing coating on the welding position again after the temperature is reduced to a certain degree after the welding is finished. According to the invention, the lead is set as a single wire core lead, and the adopted raw materials are metal or alloy materials with the melting point equal to or lower than that of the battery steel shell, so that the lead can be directly welded on the battery steel shell.
Description
Technical Field
The embodiment of the invention relates to the field of button batteries, in particular to a button battery pin and a welding method thereof.
Background
Button cells (button cells) are also called button cells, and refer to cells with the overall dimensions like a small button, generally speaking, the diameter is larger, the thickness is thinner (compared with columnar cells such as cells of No. 5 AA on the market), button cells are classified from the aspect of the appearance, and the equivalent corresponding cells are classified into columnar cells, square cells and special-shaped cells.
Some batteries with welding feet or lead wires are connected in the following way:
(1) The lead or the connecting sheet is riveted and cold welded with the lead, and then is welded on the battery through resistance welding to form a battery-connecting sheet-lead body (see figure 2); the existing defects are as follows: the cold welding or riveting connection of the connecting sheet and the lead has high unreliability, and leads to the phenomena of lead disconnection or poor riveting and the like easily;
(2) Punching a soldering lug by using a die, and welding the soldering lug and the battery by resistance welding to form a battery-soldering lug body (see figure 3); the existing defects are as follows: a large number of soldering lug molds need to be developed, so that the cost is high, the universality is poor, and the use is inconvenient and flexible.
In the prior art, the button cell adopts the lead made of the following materials: copper, a multi-stranded copper wire, typically 19 strands. The melting point disparity of copper lead and battery box hat is great, difficult welding, it has the stranded to add the copper line, it is firm to be more difficult to all weld, it can harm the battery box hat to weld many times repeatedly, weld the battery box hat even, so in order to avoid damaging the battery box hat, need weld copper lead earlier or the riveting on the connecting piece, the connecting piece is the steel material, the melting point is close with the battery box hat, easier and the welding of battery box hat, but because button cell is too thin processing not professional again, and the negative pole lithium piece is direct links to each other with battery negative pole shell, so take place the battery very easily and welded badly phenomenon that the short circuit was caused by the wearing of inside diaphragm or the soldering lug falls easily.
Disclosure of Invention
Therefore, the button battery pin and the welding method thereof provided by the embodiment of the invention have the advantages that the lead is set to be the single wire core wire, the adopted raw materials are metal or alloy materials with the melting point equal to the melting point of the battery steel shell, the lead can be directly welded on the battery steel shell, the welding process is simple, the welding strength is high, the lead is not easy to break and fall off, the size is small, the space is saved, and the problems in the background technology are solved.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: the pin comprises a lead, wherein the lead is a single wire core lead, the lead is made of a single metal or alloy material with a melting point close to that of a battery steel shell, and the lead is connected with the battery steel shell in a welding mode through a welding pin.
Further, the single metal of which the wire is made is specifically nickel.
Further, the alloy material for making the lead wire (by weight percentage) is composed of the following raw materials: 70-80 wt% of nickel, 10-15 wt% of aluminum, 5-10 wt% of silicon, 5-10 wt% of molybdenum, 1-2 wt% of metal rare earth elements, 1-2 wt% of zirconium, 0.5-1 wt% of modified carbon nanotubes and 0.5-1 wt% of nano boron fibers, wherein the modified carbon nanotubes are specifically 0.7nm carbon nanotubes.
Further, the metal rare earth element is specifically one or two blends of lanthanum or yttrium.
Further, the surface of the lead is coated with an insulating layer, and the insulating layer is specifically insulating environment-friendly glue or insulating environment-friendly paint.
The invention also provides a processing method of the button battery pin, which comprises the following processing steps:
s1, putting raw materials of a wire into a crucible according to a weight ratio, smelting in a vacuum environment, heating and stirring the raw materials, maintaining the temperature after the raw materials are completely molten, and refining for 15-20 minutes;
s2, slowly injecting the smelted metal solution into a graphite mold, stopping heating after pouring is finished, and keeping vacuum;
and S3, after the alloy is cooled and taken out, a crystallizer is adopted for continuous casting and continuous rolling, the alloy rod is subjected to wire drawing to obtain an alloy wire, then the alloy wire is subjected to annealing treatment and natural cooling, and an insulating layer is sprayed on the surface of the alloy wire, so that the wire is obtained.
Furthermore, the melting temperature of the pin raw material put into the crucible in the step S1 is 1200-1500 ℃.
Further, in the step S3, the temperature of the casting blank entering the rolling mill is 1000-1100 ℃, the temperature of the alloy rod at the outlet of the rolling mill is 500-600 ℃, the annealing temperature is 650 ℃, and the annealing time is 20 minutes.
The invention also provides a method for welding the pin of the button cell, which comprises the following welding steps:
s101, preparing a hole sealing coating: preparing the hole sealing agent asphalt-based aluminum paste and mineral alcohol, mixing and stirring the hole sealing agent asphalt-based aluminum paste and the mineral alcohol uniformly, then adding hydrotalcite with the mass of 5-10% of the hole sealing agent, and continuously stirring and mixing to obtain a hole sealing coating;
s102, substrate coating: coating the hole sealing coating prepared in the step S101 on a welding part on the steel shell of the battery;
s103, welding the lead and the battery steel shell into a whole through a welding pin by adopting an electric welding machine, and coating a hole sealing coating on the welding part again after the temperature is reduced to a certain degree after the welding is finished.
Further, in the step S103, the welding temperature is 1200-1500 ℃, and the hole sealing coating is coated again when the temperature is reduced to 900-1000 ℃.
The embodiment of the invention has the following advantages:
1. the lead is set to be a single wire core lead, and the adopted raw materials are metal or alloy materials with the melting point equal to the melting point of the battery steel shell, so that the lead can be directly welded on the battery steel shell, the welding is easier, the welding process is simple, the welding strength is high, the lead is not easy to break and fall off, the size is small, the space is saved, and the lead is suitable for the battery steel shell made of stainless steel metal such as SUS430/SUS304/SUS316 and the like;
2. according to the invention, nickel, aluminum, silicon, molybdenum, metal rare earth elements, zirconium, modified carbon nanotubes and nano boron fibers are used as alloy raw materials of the lead, the prepared lead can be welded with a battery steel shell in high quality, the novel lead has small internal resistance, good performance, wear resistance, high strength and good toughness and has superconducting performance, the rare earth elements are used in combination with zirconium, nickel, aluminum, silicon, molybdenum, nano boron fibers and other materials, the infiltration acceleration effect of the stainless steel raw materials of various materials and the battery steel shell can be greatly improved, crystal grains can be refined, the oxidation resistance is improved, the welding strength is enhanced, the connection strength, the lead toughness, the fatigue resistance and the isotropy between the metals can be enhanced by the modified carbon nanotubes and the nano boron fibers, and the carbon nanotubes with 0.7nm have superconductivity;
3. according to the invention, when the lead and the battery steel shell are welded, the hole sealing coating made of the asphalt-based aluminum paste, the mineral alcohol and the hydrotalcite is adopted to coat the welding position and is coated again after the welding is finished, so that the corrosion prevention effect can be achieved, the rigid oxidation capacity can be improved, the hydrotalcite has strong adsorption capacity on metal ions, the welding strength can be enhanced, the flame retardant effect is good, the melting speed of the stainless steel material when the melting point of the stainless steel material is exceeded in the welding process can be relieved, and the influence of the damage of the stainless steel shell on the internal structure is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, the proportions, the sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical essence, and any modifications of the structures, changes of the proportion relation, or adjustments of the sizes, should still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a schematic structural diagram of a battery according to the present invention, wherein the battery is formed by cold-welding a riveted lead or a connecting piece and a lead and then welding the riveted lead or the connecting piece and the lead to the battery through a resistance welding process;
FIG. 3 is a schematic view of a structure of a die punching tab and a battery welded by resistance welding in the prior art;
in the figure: 1 lead and 2 battery steel shells.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to the attached drawing 1 in the specification, the pin for the button cell of the embodiment comprises a lead 1, wherein the lead 1 is a single-core lead, the lead 1 is made of a single metal or alloy material with a melting point close to that of a cell steel shell 2, and the lead 1 is connected with the cell steel shell 2 in a welding mode through a welding pin.
The button cell may be a primary AG zinc manganese cell, a CR lithium manganese cell, or a secondary LIR lithium ion rechargeable cell, etc., without limitation.
Further, the single metal from which the wire 1 is made is specifically nickel.
Further, the surface of the lead 1 is coated with an insulating layer, and the insulating layer is specifically insulating environment-friendly glue.
The invention also provides a processing method of the button battery pin, which comprises the following processing steps:
s1, putting raw materials of a wire 1 into a crucible according to a weight ratio, smelting at 1450 ℃ in a vacuum environment, heating and stirring the raw materials, maintaining the temperature after the raw materials are completely molten, and refining for 15 minutes;
s2, slowly injecting the smelted metal solution into a graphite mold, stopping heating after pouring is finished, and keeping vacuum;
and S3, after the alloy is cooled and taken out, a crystallizer is adopted for continuous casting and rolling, the temperature of the casting blank entering a rolling mill is 1000 ℃, the temperature of an alloy rod at the outlet of the rolling mill is 600 ℃, the alloy rod is subjected to wire drawing to obtain an alloy wire, then the alloy wire is subjected to annealing treatment, the annealing temperature is 650 ℃, the annealing time is 20 minutes, and an insulating layer is sprayed on the surface after natural cooling to obtain the lead 1.
The invention also provides a method for welding the pin of the button battery, which comprises the following welding steps:
s101, preparing a hole sealing coating: preparing the hole sealing agent asphalt-based aluminum paste and mineral alcohol, mixing and stirring the hole sealing agent asphalt-based aluminum paste and the mineral alcohol uniformly, adding hydrotalcite with the mass of 5% of the hole sealing agent, and continuously stirring and mixing to obtain a hole sealing coating;
s102, substrate coating: coating the hole sealing coating prepared in the step S101 on a welding part on the battery steel shell 2;
s103, welding the lead 1 and the battery steel shell 2 into a whole through a welding pin by adopting an electric welding machine, wherein the welding temperature is 1200 ℃, and after the welding is finished and the temperature is reduced to 900 ℃, coating a hole sealing coating on the welding part again.
Example 2:
referring to the attached drawing 1 of the specification, the pin for the button cell of the embodiment comprises a lead 1, wherein the lead 1 is a single-core lead, the lead 1 is made of a single metal or alloy material with a melting point close to that of a cell steel shell 2, and the lead 1 is connected with the cell steel shell 2 in a welding mode through a welding pin;
further, the alloy material for manufacturing the lead 1 comprises the following raw materials in percentage by weight: 70wt% of nickel, 15wt% of aluminum, 5wt% of silicon, 5wt% of molybdenum, 2wt% of metal rare earth elements, 2wt% of zirconium, 0.5wt% of modified carbon nanotubes and 0.5wt% of nano boron fibers, wherein the modified carbon nanotubes are specifically 0.7nm carbon nanotubes.
Further, the metal rare earth element is specifically yttrium.
Further, the surface of the lead 1 is coated with an insulating layer, and the insulating layer is specifically insulating environment-friendly glue or insulating environment-friendly paint.
The invention also provides a processing method of the button battery pin, which comprises the following processing steps:
s1, putting raw materials of a wire 1 into a crucible according to a weight ratio, smelting at 1200 ℃ in a vacuum environment, heating and stirring the raw materials, maintaining the temperature after the raw materials are completely molten, and refining for 15 minutes;
s2, slowly injecting the smelted metal solution into a graphite mold, stopping heating after pouring is finished, and keeping vacuum;
and S3, after the alloy is cooled and taken out, a crystallizer is adopted for continuous casting and rolling, the temperature of the casting blank entering a rolling mill is 1000 ℃, the temperature of an alloy rod at the outlet of the rolling mill is 500 ℃, the alloy rod is subjected to wire drawing to obtain an alloy wire, then the alloy wire is subjected to annealing treatment, the annealing temperature is 650 ℃, the annealing time is 20 minutes, and an insulating layer is sprayed on the surface after natural cooling to obtain the lead 1.
The invention also provides a method for welding the pin of the button battery, which comprises the following welding steps:
s101, preparing a hole sealing coating: preparing hole sealing agent asphalt-based aluminum paste and mineral alcohol, mixing and stirring the hole sealing agent asphalt-based aluminum paste and the mineral alcohol uniformly, then adding hydrotalcite with the hole sealing agent accounting for 5% of the mass of the hole sealing agent, and continuously stirring and mixing to obtain a hole sealing coating;
s102, substrate coating: coating the hole sealing coating prepared in the step S101 on a welding part on the battery steel shell 2;
s103, welding the lead 1 and the battery steel shell 2 into a whole through a welding pin by adopting an electric welding machine, wherein the welding temperature is 1200 ℃, and after the welding is finished and the temperature is reduced to 900 ℃, coating a hole sealing coating on the welding part again.
Example 3:
referring to the attached drawing 1 of the specification, the pin for the button cell of the embodiment comprises a lead 1, wherein the lead 1 is a single-core lead, the lead 1 is made of a single metal or alloy material with a melting point close to that of a cell steel shell 2, and the lead 1 is connected with the cell steel shell 2 in a welding mode through a welding pin;
further, the alloy material for manufacturing the lead wire 1 comprises the following raw materials in percentage by weight: 75wt% of nickel, 12wt% of aluminum, 5wt% of silicon, 5wt% of molybdenum, 1wt% of metal rare earth elements, 1wt% of zirconium, 0.5wt% of modified carbon nanotubes and 0.5wt% of nano boron fibers, wherein the modified carbon nanotubes are specifically 0.7nm carbon nanotubes.
Further, the metal rare earth element is specifically yttrium.
Further, the surface of the lead 1 is coated with an insulating layer, and the insulating layer is specifically insulating environment-friendly glue or insulating environment-friendly paint.
The invention also provides a processing method of the button battery pin, which comprises the following processing steps:
s1, putting raw materials of a lead 1 into a crucible according to a weight ratio, smelting at 1350 ℃ in a vacuum environment, heating and stirring the raw materials, maintaining the temperature after the raw materials are completely molten, and refining for 17 minutes;
s2, slowly injecting the smelted metal solution into a graphite mold, stopping heating after pouring is finished, and keeping vacuum;
and S3, after the alloy is cooled and taken out, a crystallizer is adopted for continuous casting and rolling, the temperature of the casting blank entering a rolling mill is 1050 ℃, the temperature of an alloy rod at the outlet of the rolling mill is 550 ℃, the alloy rod is subjected to wire drawing to obtain an alloy wire, then the alloy wire is subjected to annealing treatment, the annealing temperature is 650 ℃, the annealing time is 20 minutes, and an insulating layer is sprayed on the surface after natural cooling to obtain the lead 1.
The invention also provides a method for welding the pin of the button cell, which comprises the following welding steps:
s101, preparing a hole sealing coating: preparing hole sealing agent asphalt-based aluminum paste and mineral alcohol, mixing and stirring the hole sealing agent asphalt-based aluminum paste and the mineral alcohol uniformly, then adding hydrotalcite with 7% of the hole sealing agent by mass, and continuously stirring and mixing to obtain a hole sealing coating;
s102, substrate coating: coating the hole sealing coating prepared in the step S101 on a welding part on the battery steel shell 2;
s103, welding the lead 1 and the battery steel shell 2 into a whole through a welding pin by adopting an electric welding machine, wherein the welding temperature is 1350 ℃, and after the welding is finished, when the temperature is reduced to 950 ℃, coating a hole sealing coating on the welding part again.
Example 4:
referring to the attached drawing 1 of the specification, the pin for the button cell of the embodiment comprises a lead 1, wherein the lead 1 is a single-core lead, the lead 1 is made of a single metal or alloy material with a melting point close to that of a cell steel shell 2, and the lead 1 is connected with the cell steel shell 2 in a welding mode through a welding pin;
further, the alloy material for manufacturing the lead wire 1 comprises the following raw materials in percentage by weight: 75wt% of nickel, 10wt% of aluminum, 5wt% of silicon, 5wt% of molybdenum, 1wt% of metal rare earth elements, 2wt% of zirconium, 1wt% of modified carbon nanotubes and 1wt% of nano boron fibers, wherein the modified carbon nanotubes are specifically 0.7nm carbon nanotubes.
Further, the metal rare earth element is specifically yttrium.
Further, the surface of the wire 1 is coated with an insulating layer, and the insulating layer is specifically insulating environment-friendly glue or insulating environment-friendly paint.
The invention also provides a processing method of the button battery pin, which comprises the following processing steps:
s1, putting raw materials of a wire 1 into a crucible according to a weight ratio, smelting at 1200-1500 ℃ in a vacuum environment, heating and stirring the raw materials, maintaining the temperature after the raw materials are completely molten, and refining for 15-20 minutes;
s2, slowly injecting the smelted metal solution into a graphite mold, stopping heating after pouring is finished, and keeping vacuum;
and S3, after the alloy is cooled and taken out, a crystallizer is adopted for continuous casting and rolling, the temperature of the casting blank entering a rolling mill is 1000-1100 ℃, the temperature of an alloy rod at the outlet of the rolling mill is 500-600 ℃, the alloy rod is subjected to wire drawing to obtain an alloy wire, then the alloy wire is subjected to annealing treatment, the annealing temperature is 650 ℃, the annealing time is 20 minutes, and an insulating layer is sprayed on the surface after natural cooling to obtain the lead 1.
The invention also provides a method for welding the pin of the button cell, which comprises the following welding steps:
s101, preparing a hole sealing coating: preparing the hole sealing agent asphalt-based aluminum paste and mineral alcohol, mixing and stirring the hole sealing agent asphalt-based aluminum paste and the mineral alcohol uniformly, then adding hydrotalcite with the mass of 5-10% of the hole sealing agent, and continuously stirring and mixing to obtain a hole sealing coating;
s102, substrate coating: coating the hole sealing coating prepared in the step S101 on a welding part on the battery steel shell 2;
and S103, welding the lead 1 and the battery steel shell 2 into a whole through a welding pin by adopting an electric welding machine, wherein the welding temperature is 1200-1500 ℃, and after the welding is finished, when the temperature is reduced to 900-1000 ℃, coating a hole sealing coating on the welding part again.
Example 5:
the leads obtained in examples 1 to 4 were welded to a battery case made of stainless steel such as SUS430/SUS304/SUS316, and 100 pins of the button cell in each example after welding were measured, respectively, to obtain the following data:
as can be seen from the above table, in example 3, the raw material mixing ratio of the lead is moderate, each process parameter is moderate during processing and welding, the obtained lead has small internal resistance, the wire 1 has good performance and superconductivity, the strength of the welded joint is high, the toughness is good, and the problems of lead breakage, poor riveting and pressing conduction, complex process and the like caused by the riveting and cold welding of the original lead are effectively improved.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.
Claims (10)
1. The utility model provides a button cell pin which characterized in that: the pin comprises a wire (1), wherein the wire (1) is a single wire core wire, the wire (1) is made of a single metal or alloy material with a melting point close to that of the battery steel shell (2), and the wire (1) is connected with the battery steel shell (2) in a welding mode through a welding needle.
2. The pin for a button cell according to claim 1, which is characterized in that: the single metal for manufacturing the lead (1) is nickel.
3. A button cell pin according to claim 2, wherein: the alloy material for preparing the lead (1) comprises the following raw materials in percentage by weight: 70-80 wt% of nickel, 10-15 wt% of aluminum, 5-10 wt% of silicon, 5-10 wt% of molybdenum, 1-2 wt% of metal rare earth elements, 1-2 wt% of zirconium, 0.5-1 wt% of modified carbon nanotubes and 0.5-1 wt% of nano boron fibers, wherein the modified carbon nanotubes are specifically 0.7nm carbon nanotubes.
4. The pin for a button cell according to claim 1, which is characterized in that: the metal rare earth element is specifically one or two blends of lanthanum or yttrium.
5. The button cell pin according to claim 1, wherein: the surface of the lead (1) is coated with an insulating layer, and the insulating layer is specifically insulating environment-friendly glue or insulating environment-friendly paint.
6. A processing method of a pin of a button cell according to any one of claims 1 to 5, characterized in that: the method comprises the following processing steps:
s1, putting raw materials of a wire (1) into a crucible according to a weight ratio, smelting in a vacuum environment, heating and stirring the raw materials, maintaining the temperature after the raw materials are completely molten, and refining for 15-20 minutes;
s2, slowly injecting the melted metal solution into a graphite mold, stopping heating after pouring is finished, and keeping vacuum;
and S3, after the alloy is cooled and taken out, a crystallizer is adopted for continuous casting and continuous rolling, the alloy rod is subjected to wire drawing to obtain an alloy wire, then the alloy wire is subjected to annealing treatment and natural cooling, and an insulating layer is sprayed on the surface of the alloy wire, so that the lead (1) is obtained.
7. The button cell pin processing method according to claim 6, wherein: in the step S1, the melting temperature of the pin raw material put into the crucible is 1200-1500 ℃.
8. The button cell pin processing method according to claim 6, wherein: in the step S3, the temperature of the casting blank entering the rolling mill is 1000-1100 ℃, the temperature of the alloy rod at the outlet of the rolling mill is 500-600 ℃, the annealing temperature is 650 ℃, and the annealing time is 20 minutes.
9. Method for welding pins of button cells according to any of claims 1 to 8, characterized in that: the method comprises the following welding steps:
s101, preparing a hole sealing coating: preparing hole sealing agent asphalt-based aluminum paste and mineral alcohol, mixing and stirring the hole sealing agent asphalt-based aluminum paste and the mineral alcohol uniformly, then adding hydrotalcite with the mass of 5-10% of the hole sealing agent, and continuously stirring and mixing to obtain a hole sealing coating;
s102, substrate coating: coating the hole sealing coating prepared in the step S101 on a welding part on the battery steel shell (2);
s103, welding the lead (1) and the battery steel shell (2) into a whole through a welding pin by adopting an electric welding machine, and coating a hole sealing coating on the welding position again after the temperature is reduced to a certain degree after the welding is finished.
10. The method for welding the pin of the button cell according to claim 9, wherein: in the step S103, the welding temperature is 1200-1500 ℃, and the hole sealing coating is coated again when the temperature is reduced to 900-1000 ℃.
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| CN202010018570.9A CN111200098B (en) | 2020-01-08 | 2020-01-08 | Button battery pin and welding method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115466934A (en) * | 2022-09-09 | 2022-12-13 | 深圳奥拦科技有限责任公司 | Fixing clamp and feeding method |
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