CN106216888B - A kind of scaling powder and preparation method thereof, pole group's welding method and lead-acid accumulator - Google Patents
A kind of scaling powder and preparation method thereof, pole group's welding method and lead-acid accumulator Download PDFInfo
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- CN106216888B CN106216888B CN201610591091.XA CN201610591091A CN106216888B CN 106216888 B CN106216888 B CN 106216888B CN 201610591091 A CN201610591091 A CN 201610591091A CN 106216888 B CN106216888 B CN 106216888B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- 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
- H01M10/06—Lead-acid accumulators
- H01M10/12—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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
- H01M50/541—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges for lead-acid accumulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
-
- 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
Abstract
The present invention provides a kind of scaling powders, sodium hypophosphite, the auxiliary agent of 35~40 parts by weight and the water of 20~30 parts by weight of the hydrazine bromide of phosphoric acid, 5~10 parts by weight, the activating agent of 5~10 parts by weight, 5~8 parts by weight including 15~20 parts by weight.Scaling powder provided by the invention is in the group's welding process of pole, it can be suitable for the cast welding of more alloy systems, in the selection of formula, the material properties and process attribute of a variety of alloys of grid itself of accumulator plate are fully considered, emphasis considers the alloy melting point of the tab at the top of pole plate especially grid, tab electrostatic interaction, the apparent oxide layer of tab (or corrosion layer), the surface tension of solid phase and liquid phase reduces, two-phase scaling powder, fire retardant etc. welds factor, the pole plate welding for being able to ascend a variety of alloy material systems reaches the cast welding quality of requirement, and energy consumption and pollution can also be reduced, and the cost of scaling powder.
Description
Technical field
The invention belongs to battery manufacturing technology fields more particularly to a kind of scaling powder and preparation method thereof, pole group's welding
Method and lead-acid accumulator.
Background technique
Lead-acid accumulator is made of a kind of electrode mainly by lead and its oxide, and electrolyte is the battery of sulfuric acid solution,
Under discharge condition, positive main component is brown lead oxide, and cathode main component is lead；Under charged state, positive and negative anodes it is main at
Dividing is lead sulfate.Lead-acid accumulator battery mainly by tubular positive plate, negative plate, electrolyte, partition, battery case, battery cover,
The composition such as pole, fill cap, can be divided into vented cell and maintenance-free lead-acid battery.
With the upgrading of battery manufacturing technology, lead-acid accumulator main force's development is plumbic acid maintenance-free battery, is made
Without adding electrolyte or distilled water in.It mainly generates oxygen using anode and can be absorbed in cathode and reach oxygen cycle, can prevent
Sealing point is reduced, thus the consumption of electrolyte is very small, does not need supplement distilled water substantially in service life.Non-maintaining lead
Acid accumulator application range is wider, including uninterruptible power supply, electrical vehicular power, battery of electric bicycle etc..
Pole plate is the important composition component of maintenance-free lead accumulator, and grid is the component part of pole plate, on grid
Pole plate is formed by curing after coating lead plaster；Tab is then the top current output interface of grid, for conduction, tab (current-carrying part)
Last welded or cast welding processing fusing is integrated, and is formed busbar connector (also referred to as collector)；Pole group refers to by positive and negative difference
The monomer group of polar positive/negative plate midfeather AGM partition composition.
In the preparation process of maintenance-free lead accumulator, current pole group welding method, which is divided into, to freeze and cast welding.Freezing is
It uses the fuel gas such as coal gas or acetylene as fuel, carries out flame fusing as combustion adjuvant with oxygen, make polar plate of lead acid storage battery
Tab (current-carrying part) fusing be integrated, formed busbar connector (also referred to as collector)；Another welding method is cast welding, is that will cast
Welding mould is installed in automatic cast welding machine, and then the metal filling of high temperature melting is added in weld mold, then helps the libation at an ancient wedding ceremony
The tab of solder flux is inserted into weld mold, using the high temperature of lead liquid and the promotion welding function of scaling powder, makes tab surface element
The alloy divided fuses into one with lead liquid alloy, forms a complete fusion after cooling, reaches the purpose of welding.Scaling powder
It is the chemical substance that welding process can be helped and promoted in welding procedure, while there is protective effect, prevent oxidation reaction,
Battery field scaling powder is liquid condition.Mainly there is " removing apparent oxide, corrosion layer ", " reduce and be soldered material solid phase
With the surface tension of liquid phase " key effect.
Currently, slab lattice alloy of lead-acid battery is broadly divided into two kinds, one is Pb-Sb-Cd alloy, another kind is lead-calcium alloy
(actually lead calcium tin multicomponent alloy, industry on be commonly referred to as lead-calcium alloy).Lead-calcium alloy fusing point is relatively high (opposite among these
It is higher by about 15~20 DEG C), it is slightly poor on processing property, but the alloy is a kind of cleaning alloy, is that battery industry is pushed greatly
A kind of wide alloy, but the product of two kinds of alloy systems is produced in most enterprise simultaneously, many inconvenience are brought to welding production.
Therefore, a kind of scaling powder with better applicability how is found, it can be for common alloy body in industry
System all has and preferably helps weldering effect, it has also become each lead-acid storage battery production enterprise urgent problem to be solved.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is that providing a kind of scaling powder and preparation method thereof, pole group's weldering
Method and lead-acid accumulator are connect, scaling powder provided by the invention can be suitable for more alloy systems in the group's welding process of pole
Cast welding so that the pole plate welding of a variety of alloy material systems reaches the cast welding quality of requirement, and can also reduce energy consumption and pollution,
And the cost of scaling powder.
The present invention provides a kind of scaling powders, comprising:
5 ~ 20 parts by weight of phosphatase 11；
5 ~ 10 parts by weight of hydrazine bromide；
5 ~ 10 parts by weight of activating agent；
5 ~ 8 parts by weight of sodium hypophosphite；
35 ~ 40 parts by weight of auxiliary agent；
20 ~ 30 parts by weight of water.
Preferably, the activating agent includes that Qula is logical and/or glycerol；
The auxiliary agent is volatile aids；
The water is deionized water.
Preferably, the volatile aids include ethyl alcohol, ether, isopropanol, ethylene glycol monobutyl ether, ethylene glycol monomethyl ether, third
One of glycol n-butyl ether, butyl, benzene, toluene and dimethylbenzene are a variety of.
The present invention provides a kind of preparation methods of scaling powder, comprising the following steps:
1) after mixing water, auxiliary agent and phosphoric acid, mixed liquor is obtained；
2) hydrazine bromide, activating agent and sodium hypophosphite are added into the mixed liquor that above-mentioned steps obtain, while mixing again, obtains
To scaling powder.
Preferably, described be mixed into is stirred, and the mixed time is 5 ~ 10 minutes；
Described be mixed into again is stirred, and the time mixed again is 5 ~ 10 minutes.
The present invention provides the welding methods of pole group a kind of, comprising the following steps:
A it) will be helped prepared by scaling powder described in above-mentioned technical proposal any one or above-mentioned technical proposal any one
Solder flux is compounded in the tab surface of the pole group, obtains pole group to be welded；
B) the metal liquid of melting is compounded in again to the tab surface for the pole to be welded group that above-mentioned steps obtain, obtain pole
Group.
Preferably, the ingredient of the metal liquid is identical as the ingredient of electrode plate grid alloy of the pole group；
The mass values that the scaling powder accounts for the metal liquid are 0.5% ~ 3%.
Preferably, the temperature of the metal liquid of the melting is 480 ~ 495 DEG C；
Compound time again is 35 ~ 45 seconds；
It is described it is compound again after, further include cooling treatment step.
Preferably, the step A) specifically:
A1) the tab surface of pole group is placed in the adsorption material for being adsorbed with scaling powder described in above-mentioned technical proposal any one
In material, semi-finished product are obtained；
A2) semi-finished product for obtaining above-mentioned steps are placed in adsorbent material, are removed the excessive scaling powder in tab surface, are obtained
Pole group to be welded；
The step A2) in, the time being placed in is 3 ~ 10 seconds.
The present invention also provides a kind of lead-acid accumulator, the pole group welded including above-mentioned technical proposal any one.
The present invention provides a kind of scaling powders, the hydrazine bromide of phosphoric acid, 5 ~ 10 parts by weight including 15 ~ 20 parts by weight, 5 ~ 10
The activating agent of parts by weight, the sodium hypophosphite of 5 ~ 8 parts by weight, the auxiliary agent of 35 ~ 40 parts by weight and 20 ~ 30 parts by weight water.With it is existing
There is technology to compare, for the present invention in existing storage battery production, pole plate alloy system is not unique, causes to weld in actual production
Technique is unstable and ropy problem, voluntarily develops the scaling powder suitable for more alloy system cast weldings.The present invention provides
Scaling powder pole group welding process in, can be suitable for more alloy systems cast welding be fully considered in the selection of formula
The material properties and process attribute of a variety of alloys of the grid of accumulator plate itself, emphasis consider at the top of pole plate especially grid
The alloy melting point of tab, tab electrostatic interaction, the apparent oxide layer of tab (or corrosion layer), the surface tension of solid phase and liquid phase drop
Low, two-phase scaling powder, fire retardant etc. weld factor, and the pole plate welding for being able to ascend a variety of alloy material systems reaches the casting of requirement
Quality is welded, and the cost of energy consumption and pollution and scaling powder can also be reduced.The experimental results showed that provided by the invention help weldering
The temperature ratio that agent is needed in welding uses general 20 ~ 40 DEG C of decline when using scaling powder, thus welds energy consumption and decrease；Scaling powder
Volatility is weak, operates with link safety.
Detailed description of the invention
Fig. 1 is the schematic diagram of pole group welding provided in an embodiment of the present invention.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are intended merely to further illustrate the features and advantages of the present invention, rather than to invention claim
Limitation.
All raw materials of the present invention, are not particularly limited its source, buying on the market or according to those skilled in the art
The preparation of conventional method known to member.
All raw materials of the present invention, are not particularly limited its purity, and present invention preferably employs analyze pure or lead-acid accumulator
The conventional purity that field uses.
The present invention provides a kind of scaling powders, comprising:
5 ~ 20 parts by weight of phosphatase 11；
5 ~ 10 parts by weight of hydrazine bromide；
5 ~ 10 parts by weight of activating agent；
5 ~ 8 parts by weight of sodium hypophosphite；
35 ~ 40 parts by weight of auxiliary agent；
20 ~ 30 parts by weight of water.
The definition of the scaling powder is not particularly limited in the present invention, is with scaling powder well known to those skilled in the art
Can, scaling powder of the present invention is preferably lead-acid accumulator scaling powder, more preferably the pole group of lead-acid accumulator or pole plate weldering
It connects with scaling powder, specially the pole group welding soldering flux of more alloy systems of lead-acid accumulator.
In scaling powder of the present invention, the content of the phosphoric acid in parts by weight, preferably 15 ~ 20 parts by weight, more preferably
For 16 ~ 19 parts by weight, most preferably 17 ~ 18 parts by weight；The content of the hydrazine bromide in parts by weight, preferably 5 ~ 10 weight
Part, more preferably 6 ~ 9 parts by weight, most preferably 7 ~ 8 parts by weight；The content of the activating agent in parts by weight, preferably 5 ~ 10
Parts by weight, more preferably 6 ~ 9 parts by weight, most preferably 7 ~ 8 parts by weight；The content of the sodium hypophosphite in parts by weight, preferably
For 5 ~ 8 parts by weight, more preferably 5.5 ~ 7.5 parts by weight, most preferably 6 ~ 8 parts by weight；The content of the auxiliary agent in parts by weight,
Preferably 35 ~ 40 parts by weight, more preferably 36 ~ 39 parts by weight, most preferably 37 ~ 38 parts by weight；The content of the water is by weight
Number, preferably 20 ~ 30 parts by weight, more preferably 22 ~ 28 parts by weight, more preferably 23 ~ 27 parts by weight, most preferably 24 ~ 26
Parts by weight.
The activating agent is not particularly limited in the present invention, with the work well known to those skilled in the art for welding field
Property agent, those skilled in the art can select and adjust according to practical condition, product requirement and quality requirement,
Activating agent of the present invention preferably includes that Qula is logical and/or glycerol, and more preferably Qula is logical or glycerol.The present invention is to the auxiliary agent
It is not particularly limited, with the auxiliary agent well known to those skilled in the art for welding field, those skilled in the art can be with
It is selected and is adjusted according to practical condition, product requirement and quality requirement, auxiliary agent of the present invention is preferably volatility
Auxiliary agent, more specifically preferably ethyl alcohol, ether, isopropanol, ethylene glycol monobutyl ether, ethylene glycol monomethyl ether, propylene glycol n-butyl ether, diethyl two
One of alcohol butyl ether, benzene, toluene and dimethylbenzene are a variety of, or are ethyl alcohol, ether, isopropanol, ethylene glycol monobutyl ether, second two
Alcohol methyl ether, propylene glycol n-butyl ether, butyl, benzene, toluene or dimethylbenzene；The present invention is the safe and practical of raising scaling powder
Property, the volatile aids are preferably alcohol ether analog assistant, more specifically preferably alcohol, ether, isopropanol, ethylene glycol monobutyl ether, second
Glycol methyl ether, propylene glycol n-butyl ether or butyl, or just for alcohol, ether, isopropanol, ethylene glycol monomethyl ether or propylene glycol
Butyl ether, most preferably ethyl alcohol.
The present invention provides a kind of preparation methods of scaling powder, comprising the following steps:
1) after mixing water, auxiliary agent and phosphoric acid, mixed liquor is obtained；
2) hydrazine bromide, activating agent and sodium hypophosphite are added into the mixed liquor that above-mentioned steps obtain, while mixing again, obtains
To scaling powder.
In the above-mentioned preparation method of the present invention, selection, assembled scheme, specific ratio and the optimum principle of the various raw materials
It is consistent with the selection of the raw material in aforementioned scaling powder, assembled scheme, specific ratio and optimum principle, herein no longer one by one
It repeats.
After the present invention first mixes water, auxiliary agent and phosphoric acid, mixed liquor is obtained.
The mixed mode is not particularly limited in the present invention, is with hybrid mode well known to those skilled in the art
Can, those skilled in the art can select and adjust according to practical condition, product requirement and quality requirement, the present invention
The mixing is preferably stirred；The mixed time is not particularly limited in the present invention, and those skilled in the art can be with
It is selected and is adjusted according to practical condition, product requirement and quality requirement, the mixed time of the present invention is preferably 5
~ 10 minutes, more preferably 6 ~ 9 minutes, most preferably 7 ~ 8 minutes.The present invention does not limit the mode mixed again especially
System, with hybrid mode well known to those skilled in the art, those skilled in the art can be according to practical condition, product
It is required that and quality requirement selected and adjusted, it is of the present invention again mixing preferably be stirred；The present invention to it is described again
The secondary mixed time is not particularly limited, and those skilled in the art can want according to practical condition, product requirement and quality
It asks and is selected and adjusted, the time of the present invention mixed again is preferably 5 ~ 10 minutes, more preferably 6 ~ 9 minutes, optimal
It is selected as 7 ~ 8 minutes.
Above-mentioned technical proposal of the present invention provides scaling powder and preparation method thereof, and scaling powder provided by the invention is welded in pole group
In termination process, the cast welding that can be suitable for more alloy systems has fully considered the grid of accumulator plate in the selection of formula
The material properties and process attribute of itself a variety of alloy, the alloy that emphasis considers the tab at the top of pole plate especially grid are molten
Point, tab electrostatic interaction, the apparent oxide layer of tab (or corrosion layer), the surface tension reduction of solid phase and liquid phase, two-phase scaling powder,
Fire retardant etc. welds factor, and the pole plate welding for being able to ascend a variety of alloy material systems reaches the cast welding quality of requirement, and leads to
The preferred of scaling powder concrete component is crossed, also has volatility weak, no toxic gas evolution, operating with link, pollution is small safely
Feature, while scaling powder is low in cost, per kilogram cost is can be controlled within 20.00 yuan, and the every public affairs of commercially available (general use) cast welding agent
Jin is differed at 80 ~ 150 yuan, considerably reduces production cost.
The present invention provides the welding methods of pole group a kind of, comprising the following steps:
A it) will be helped prepared by scaling powder described in above-mentioned technical proposal any one or above-mentioned technical proposal any one
Solder flux is compounded in the tab surface of the pole group, obtains pole group to be welded；
B) the metal liquid of melting is compounded in again to the tab surface for the pole to be welded group that above-mentioned steps obtain, obtain pole
Group.
The present invention is first by scaling powder described in above-mentioned technical proposal any one or above-mentioned technical proposal any one institute
The scaling powder of preparation is compounded in the tab surface of the pole group, obtains pole group to be welded.
The definition of the pole group is not particularly limited in the present invention, in lead-acid accumulator well known to those skilled in the art
Pole group, it includes the conventional configurations such as grid that pole group, which includes conventional configurations, the pole plates such as pole plate, tab,.
The ingredient of the metal liquid is not particularly limited in the present invention, is used for plumbic acid with well known to those skilled in the art
The ingredient of the metal of battery, those skilled in the art can want according to practical condition, product requirement and quality
It asks and is selected and adjusted, the ingredient of metal liquid of the present invention is preferably with the grid alloy of the pole group pole plate at split-phase
It is same or similar, it is more preferably identical.The usage amount of the scaling powder is not particularly limited in the present invention, with those skilled in the art
The usage amount of the well known scaling powder for lead-acid accumulator, those skilled in the art can according to practical condition,
Product requirement and quality requirement are selected and are adjusted, and the present invention is to improve welding quality, reduce production empty in welding finished product
Raw, the mass values that the scaling powder accounts for the metal liquid are preferably 0.5% ~ 3%, and more preferably 1% ~ 2.5%, most preferably
1.5%~2% 。
The present invention to it is described it is compound be not particularly limited, with complex method well known to those skilled in the art, this
Field technical staff can select and adjust according to practical condition, product requirement and quality requirement, of the present invention
It is compound to be specifically as follows one of coat, spraying, spray, smear, brush or dip in or a variety of and brush or dip in.The present invention couple
The compound temperature is not particularly limited, with the ordinary temperature of such technique well known to those skilled in the art, originally
Field technical staff can select and adjust according to practical condition, product requirement and quality requirement, of the present invention
Compound temperature is preferably 5 ~ 40 DEG C, more preferably 10 ~ 35 DEG C, more preferably 15 ~ 30 DEG C, most preferably 20 ~ 25 DEG C.
The compound specific steps are not particularly limited in the present invention, and those skilled in the art can be according to actual production
Situation, product requirement and quality requirement are selected and are adjusted, and the present invention is to improve the welding quality of pole group, reduce scaling powder mistake
Amount can cause tab to corrode or weld excessive situation, based on the excessive scaling powder adhered on removal tab, only retain tab table
The principle of the suitable scaling powder of layer, the step A) it is particularly preferred as:
A1) the tab surface of pole group is placed in the adsorption material for being adsorbed with scaling powder described in above-mentioned technical proposal any one
In material, semi-finished product are obtained；
A2) semi-finished product for obtaining above-mentioned steps are placed in adsorbent material, are removed the excessive scaling powder in tab surface, are obtained
Pole group to be welded.
The adsorbent material is not particularly limited in the present invention, with the common absorption of production well known to those skilled in the art
Material, those skilled in the art can select and adjust according to practical condition, product requirement and quality requirement,
Adsorbent material of the present invention is preferably one of sponge, gauze and cotton or a variety of, more specifically preferably cotton.
The present invention is to the step A1) in the time that is placed in be not particularly limited, those skilled in the art can be according to reality
The border condition of production, product requirement and quality requirement are selected and are adjusted.The present invention is to the suction for being adsorbed with above-mentioned scaling powder
The adsorbance of enclosure material is not particularly limited, with common adsorbance well known to those skilled in the art, art technology
Personnel can select and adjust according to practical condition, product requirement and quality requirement, and absorption of the present invention helps
The saturation degree of the adsorbent material of solder flux is preferably 90% ~ 98%, and more preferably 91% ~ 97%, more preferably 92% ~ 96%, most preferably
93%~95% 。
Step A2 of the present invention) in adsorbent material refer to blank adsorbent material, the selection of material and preceding adsorption
The principle of material (non-blank-white adsorbent material) is consistent.The present invention is to the step A2) in the time that is placed in be not particularly limited,
Those skilled in the art can select and adjust according to practical condition, product requirement and quality requirement, the present invention couple
The step A2) in the time that is placed in be preferably 3 ~ 10 seconds, more preferably 4 ~ 9 seconds, more preferably 5 ~ 8 seconds, most preferably 6 ~ 7
Second.The excessive definition is not particularly limited in the present invention, judges whether excess with principle well known to those skilled in the art
, those skilled in the art can select and adjust, this hair according to practical condition, product requirement and quality requirement
It is bright that whether excessive scaling powder has preferably been removed by observation and micro-judgment.The present invention can be according to the dosage of the scaling powder
It is selected according to the excessive principle of above-mentioned judgement, qualitative selection can also be carried out referring in particular to the dosage of the scaling powder.
The present invention to it is described it is compound again be not particularly limited, be with complex method well known to those skilled in the art
Can, those skilled in the art can select and adjust according to practical condition, product requirement and quality requirement, the present invention
It is described compound to be again specifically as follows one of coat, spraying, spray, smear, brush or dip in or a variety of and brush or dip in.
The present invention is not particularly limited the compound temperature again, with the temperature of such technique well known to those skilled in the art
, those skilled in the art can select and adjust, this hair according to practical condition, product requirement and quality requirement
The bright compound temperature again is preferably the temperature of the metal liquid melted, is specifically as follows 480 ~ 495 DEG C, or for 482 ~
493 DEG C are perhaps 480 ~ 490 DEG C or are 483 ~ 488 DEG C.Compound time again is not particularly limited in the present invention,
Those skilled in the art can select and adjust according to practical condition, product requirement and quality requirement, institute of the present invention
Stating the time compound again is preferably 35 ~ 45 seconds, more preferably 37 ~ 42 seconds, more preferably 38 ~ 41 seconds, most preferably 39 ~ 40
Second.
The present invention is to improve the effect of welding, further includes cooling treatment step preferably after compound again；The present invention couple
The detailed process and parameter of the cooling treatment are not particularly limited, with the cold of such technique well known to those skilled in the art
But process and parameter, those skilled in the art can select according to practical condition, product requirement and quality requirement
It selects and adjusts, cooling treatment of the present invention is preferably gas-cooled, is air-cooled or air-cooled.
The present invention also provides a kind of lead-acid accumulator, the pole group welded including above-mentioned technical proposal any one.
The definition of the lead-acid accumulator is not particularly limited in the present invention, with plumbic acid well known to those skilled in the art storage
Battery, the present invention are more preferably maintenance-free lead accumulator.The present invention does not have the specific structure of the lead-acid accumulator
Especially limitation, with the structure of lead-acid accumulator well known to those skilled in the art, those skilled in the art can be according to reality
The border condition of production, combining case and properties of product are selected, and lead-acid accumulator of the present invention includes pole group, pole group
It is made of multiple pole groups, pole group includes pole plate, and pole plate includes grid and tab etc..Lead-acid accumulator of the present invention includes using
The pole group for the scaling powder welding that above-mentioned technical proposal of the present invention provides.The present invention does not have the preparation process of the lead-acid accumulator
There is special limitation, with the preparation process of lead-acid accumulator well known to those skilled in the art, those skilled in the art can be with
It is selected according to practical condition, product situation and properties of product.
Above-mentioned steps of the present invention provide a kind of scaling powder and preparation method thereof, pole group's welding method and lead-acid accumulator.
Scaling powder provided by the invention can be suitable for the cast welding of more alloy systems in the group's welding process of pole, in the selection of formula,
The material properties and process attribute of a variety of alloys of grid itself of accumulator plate are fully considered, emphasis considers pole plate especially
It is alloy melting point, tab electrostatic interaction, the apparent oxide layer of tab (or corrosion layer), solid phase and the liquid phase of the tab at the top of grid
Factor is welded in surface tension reduction, two-phase scaling powder, fire retardant etc., and the pole plate welding for being able to ascend a variety of alloy material systems reaches
To the cast welding quality of requirement, and by the preferred of scaling powder concrete component, also have volatility weak, no toxic gas evolution,
It operates with link and pollutes small feature safely, while scaling powder and existing scaling powder dosage are identical but low in cost, every public affairs
Jin cost is can be controlled within 20.00 yuan, and commercially available (general use) cast welding agent per kilogram is differed at 80 ~ 150 yuan, is considerably reduced
Production cost.The experimental results showed that when the temperature ratio that scaling powder provided by the invention is needed in welding uses general use scaling powder
20 ~ 40 DEG C of decline, thus weld energy consumption and decrease；Scaling powder volatility is weak, operates with link safety.
In order to further illustrate the present invention, with reference to embodiments to a kind of scaling powder provided by the invention and its preparation side
Method, pole group's welding method and lead-acid accumulator are described in detail, but it is to be understood that these embodiments are with skill of the present invention
Implemented under premised on art scheme, the detailed implementation method and specific operation process are given, is only further explanation
The features and advantages of the present invention, rather than limiting to the claimed invention, protection scope of the present invention are also not necessarily limited to following
Embodiment.
Embodiment 1
Scaling powder prepares specific steps
The analysis pure phosphoric acid of 25KG deionized water, 40KG ethyl alcohol and 20KG is successively mixed after ten minutes, is obtained
The uniform mixed liquor of 85KG；The secondary phosphorus of the hydrazine bromide of 8KG, the glycerol of 7KG and 5KG are successively slowly added into obtained mixed liquor
Sour sodium is mixed 10 minutes to uniform, obtains scaling powder.
Pole group's welding step
Referring to Fig. 1, Fig. 1 is the schematic diagram of pole group welding provided in an embodiment of the present invention.Wherein, a is pole group to be welded, b
For at grade group, c is pole group's weld mold, 1 is tab, and 2 be pole plate, and 3 be die main body, and 4 be busbar connector forming tank, and 5 be remittance
Stream row
Prepared scaling powder is combined to 1 table of tab on 2 top of pole plate in pole group a to be welded by way of dipping in brush
Then pole to be welded group in Fig. 1 is inverted by 5 seconds on gauze, absorbs excessive scaling powder by face, obtain pole group to be welded；Together
When be 1.5% according to scaling powder and metal solution quality ratio ratio, the metal solution injector for being 485 DEG C by temperature
It in the busbar connector forming tank 4 of group's weld mold c, is inverted after several pole groups to be welded are closed, tab 1 is snapped into pole group's welding mould
Have in the busbar connector forming tank 4 inside main body 3, so that compound 1 table of tab for being attached to pole group to be welded of the metal liquid of melting
Face combines together to form into the busbar connector 5 on the top grade group b, by finished product after cooling after 40 seconds to metal solution and tab 1
Pole group is assembled into battery case and is passed through according to positive and negative connected principle filling plus electrolyte after being detached from pole group's weld mold c, changes
The lead-acid accumulator of finished product can be obtained at charge and discharge.
The temperature ratio that pole group's welding result shows that scaling powder provided by the invention is needed in welding uses scaling powder using general
When decline 20 DEG C, welding energy consumption decrease；Scaling powder volatility is weak in welding process, and no toxic gas evolution operates with
Pollution is small safely for link；And the cast welding quality for welding the pole plate of obtained a variety of alloy material systems complies with standard, and visually converges
Stream row's smooth in appearance flawless, busbar connector portraitlandscape is splitted respectively, busbar connector section pore-free, the smooth nothing of busbar connector section
Stomata；And price is only 18 yuan of per kilogram.
Embodiment 2
Scaling powder prepares specific steps
After the analysis pure phosphoric acid of 28KG deionized water, 38KG ethyl alcohol and 18KG is successively mixed 8 minutes, 84KG is obtained
Uniform mixed liquor；The Qula of hydrazine bromide, 7KG that 10KG is successively slowly added into obtained mixed liquor is led to and the secondary phosphorus of 6KG
Sour sodium is mixed 8 minutes to uniform, obtains scaling powder.
Pole group's welding step
Referring to Fig. 1, Fig. 1 is the schematic diagram of pole group welding provided in an embodiment of the present invention.Wherein, a is pole group to be welded, b
For at grade group, c is pole group's weld mold, 1 is tab, and 2 be pole plate, and 3 be die main body, and 4 be busbar connector forming tank, and 5 be remittance
Stream row
Prepared scaling powder is combined to 1 table of tab on 2 top of pole plate in pole group a to be welded by way of dipping in brush
Then pole to be welded group in Fig. 1 is inverted by 6 seconds on cotton, absorbs excessive scaling powder by face, obtain pole group to be welded；Together
When be 1% according to scaling powder and metal solution quality ratio ratio, the metal solution injector group for being 490 DEG C by temperature
It in the busbar connector forming tank 4 of weld mold c, is inverted after several pole groups to be welded are closed, tab 1 is snapped into pole group's weld mold
In busbar connector forming tank 4 inside main body 3, so that compound 1 surface of tab for being attached to pole group to be welded of the metal liquid of melting,
It combines together to form into the busbar connector 5 on the top grade group b to metal solution and tab 1 after 35 seconds, by after cooling at grade
Group is assembled into battery case according to positive and negative connected principle after being detached from pole group's weld mold c and by filling plus electrolyte, chemical conversion
The lead-acid accumulator of finished product can be obtained in charge and discharge.
The temperature ratio that pole group's welding result shows that scaling powder provided by the invention is needed in welding uses scaling powder using general
When decline 20 DEG C, welding energy consumption decrease；Scaling powder volatility is weak in welding process, and no toxic gas evolution operates with
Pollution is small safely for link；And the cast welding quality for welding the pole plate of obtained a variety of alloy material systems complies with standard, and visually converges
Stream row smooth in appearance, flawless, are splitted busbar connector with cutter, busbar connector section is smooth for discovery, pore-free longitudinally or transversely；
And price is only 18.4 yuan of per kilogram.
Embodiment 3
Scaling powder prepares specific steps
After the analysis pure phosphoric acid of 30KG deionized water, 39KG ethyl alcohol and 19KG is successively mixed 9 minutes, 88KG is obtained
Uniform mixed liquor；The Qula of hydrazine bromide, 8KG that 10KG is successively slowly added into obtained mixed liquor is led to and the secondary phosphorus of 6KG
Sour sodium is mixed 8 minutes to uniform, obtains scaling powder.
Pole group's welding step
Referring to Fig. 1, Fig. 1 is the schematic diagram of pole group welding provided in an embodiment of the present invention.Wherein, a is pole group to be welded, b
For at grade group, c is pole group's weld mold, 1 is tab, and 2 be pole plate, and 3 be die main body, and 4 be busbar connector forming tank, and 5 be remittance
Stream row
Prepared scaling powder is combined to 1 table of tab on 2 top of pole plate in pole group a to be welded by way of dipping in brush
Then pole to be welded group in Fig. 1 is inverted by 6 seconds on sponge, absorbs excessive scaling powder by face, obtain pole group to be welded；Together
When be 1.3% according to scaling powder and metal solution quality ratio ratio, the metal solution injector for being 486 DEG C by temperature
It in the busbar connector forming tank 4 of group's weld mold c, is inverted after several pole groups to be welded are closed, tab 1 is snapped into pole group's welding mould
Have in the busbar connector forming tank 4 inside main body 3, so that compound 1 table of tab for being attached to pole group to be welded of the metal liquid of melting
Face combines together to form into the busbar connector 5 on the top grade group b, by finished product after cooling after 38 seconds to metal solution and tab 1
Pole group is assembled into battery case and is passed through according to positive and negative connected principle filling plus electrolyte after being detached from pole group's weld mold c, changes
The lead-acid accumulator of finished product can be obtained at charge and discharge.
The temperature ratio that pole group's welding result shows that scaling powder provided by the invention is needed in welding uses scaling powder using general
When decline 20 DEG C, welding energy consumption decrease；Scaling powder volatility is weak in welding process, and no toxic gas evolution operates with
Pollution is small safely for link；And the cast welding quality for welding the pole plate of obtained a variety of alloy material systems complies with standard, and visually converges
Stream row smooth in appearance, flawless, are splitted busbar connector with cutter, busbar connector section is smooth for discovery, pore-free longitudinally or transversely；
And price is only 18.6 yuan of per kilogram.
A kind of scaling powder provided by the invention and preparation method thereof, pole group's welding method and lead-acid accumulator are carried out above
Detailed introduction, used herein a specific example illustrates the principle and implementation of the invention, above implementation
The explanation of example is merely used to help understand method and its core concept of the invention, including best mode, and but also ability
Any technical staff in domain can practice the present invention, including any device or system of manufacture and use, and implement any combination
Method.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.The range of the invention patent protection is defined by the claims, and may include those skilled in the art it is conceivable that its
His embodiment.If these other embodiments, which have, is not different from the structural element of claim character express, or if
They include the equivalent structural elements with the character express of claim without essence difference, then these other embodiments should also wrap
Containing within the scope of the claims.
Claims (10)
1. a kind of scaling powder for the welding of more alloys that can reduce welding temperature, which is characterized in that consist of the following compositions:
5~20 parts by weight of phosphatase 11；
5~10 parts by weight of hydrazine bromide；
5~10 parts by weight of activating agent；
The activating agent includes that Qula is logical and/or glycerol；
5~8 parts by weight of sodium hypophosphite；
35~40 parts by weight of auxiliary agent；
The auxiliary agent is volatile aids；
20~30 parts by weight of water.
2. scaling powder according to claim 1, which is characterized in that the water is deionized water.
3. scaling powder according to claim 1, which is characterized in that the volatile aids include ethyl alcohol, ether, isopropyl
One of alcohol, ethylene glycol monobutyl ether, ethylene glycol monomethyl ether, propylene glycol n-butyl ether, butyl, benzene, toluene and dimethylbenzene
Or it is a variety of.
4. a kind of preparation method of the scaling powder as described in claims 1 to 3 any one, which is characterized in that including following step
It is rapid:
1) after mixing water, auxiliary agent and phosphoric acid, mixed liquor is obtained；
2) hydrazine bromide, activating agent and sodium hypophosphite are added into the mixed liquor that above-mentioned steps obtain, while mixing again, is helped
Solder flux.
5. the preparation method according to claim 4, which is characterized in that described be mixed into is stirred, when described mixed
Between be 5~10 minutes；
Described be mixed into again is stirred, and the time mixed again is 5~10 minutes.
6. a kind of welding method of pole group, which comprises the following steps:
A) by preparation method described in scaling powder described in claims 1 to 3 any one or claim 4~5 any one
Prepared scaling powder is compounded in the tab surface of the pole group, obtains pole group to be welded；
B) the metal liquid of melting is compounded in again to the tab surface for the pole to be welded group that above-mentioned steps obtain, obtain pole group
Group.
7. welding method according to claim 6, which is characterized in that the pole of the ingredient of the metal liquid and pole group
The ingredient of plate grid alloy is identical；
The mass values that the scaling powder accounts for the metal liquid are 0.5%~3%.
8. welding method according to claim 6, which is characterized in that the temperature of the metal liquid of the melting be 480~
495℃；
Compound time again is 35~45 seconds；
It is described it is compound again after, further include cooling treatment step.
9. welding method according to claim 6, which is characterized in that the step A) specifically:
A1) the tab surface of pole group is placed in the adsorbent material for being adsorbed with scaling powder described in claims 1 to 3 any one
In, obtain semi-finished product；
A2) semi-finished product for obtaining above-mentioned steps are placed in adsorbent material, are removed the excessive scaling powder in tab surface, are obtained to be welded
Meet pole group；
The step A2) in, the time being placed in is 3~10 seconds.
10. a kind of lead-acid accumulator, which is characterized in that welded including welding method described in claim 6~9 any one
Pole group.
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| CN104471781B (en) * | 2012-12-21 | 2016-04-06 | 松下知识产权经营株式会社 | Lead accumulator |
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