CN105364334A - Activating emulsion used for welding power lithium battery connectors - Google Patents

Activating emulsion used for welding power lithium battery connectors Download PDF

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Publication number
CN105364334A
CN105364334A CN201510826184.1A CN201510826184A CN105364334A CN 105364334 A CN105364334 A CN 105364334A CN 201510826184 A CN201510826184 A CN 201510826184A CN 105364334 A CN105364334 A CN 105364334A
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China
Prior art keywords
lithium battery
welding
dynamic lithium
weight proportioning
ingredients weight
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CN201510826184.1A
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CN105364334B (en
Inventor
梁力强
何锡坚
范晶波
梁洁明
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TAISHAN LICHUANG ELECTRONIC TECHNOLOGY Co Ltd
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TAISHAN LICHUANG ELECTRONIC TECHNOLOGY Co Ltd
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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
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286—Al as the principal constituent
    • B23K35/288—Al as the principal constituent with Sn or Zn
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses an activating emulsion used for welding power lithium battery connectors. The activating emulsion is composed of, by weight, 5%-50% of pasty and 50%-95% of reactive alloy powder. In this way, the activating emulsion used for welding the power lithium battery connectors has the advantages of being moderate in viscosity, free of trailing, low in welding temperature, good in liquidity, free of halides, free of corrosion and residues after welding, non-hygroscopic, good in physical properties after welding, remarkable in thermal fatigue resistance, non-oxidizable, high in conductivity, convenient to weld and use and the like, and materials are convenient to add; the market prospects for popularization of the activating emulsion used for welding the power lithium battery connectors are broad.

Description

A kind of activation emulsion for welding dynamic lithium battery joint
Technical field
The present invention relates to emulsion field, particularly relating to a kind of activation emulsion for welding dynamic lithium battery joint.
Background technology
Full-sized bus before comparatively early or board electric automobile are all generally with lead-acid accumulator as electrical source of power, but lead-acid accumulator has, and the shortcomings such as capacity density is low, weight large, monomer voltage, contaminated environment cannot overcome.Lithium battery because its terminal voltage is high, specific energy is large, the discharge and recharge life-span is long, discharge performance is stable, self-discharge rate is low and the advantage such as environmentally safe, be widely used in automobile power at present.
Automobile power cell exists with the form of battery pack, in order to make these rechargeablely have enough battery capacities, battery pack is linked by multiple lithium battery monomer to form, as the power resources of automobile, so the environment residing for battery pack is relatively more severe, the security performance of battery pack requires very high simultaneously.The metal parts connected for cell is called battery contact.Traditional has using brace as connector, and this mode exists hidden danger in the reliability of battery pack.Fully take into account conductance and galvano-cautery and battery reliability aspect factor, the existing lithium battery joint adopted at present is generally divided into two parts, and a part is external terminal, and a part is inner terminal, and two parts assembly welding is lithium battery joint together.Positive pole and anode connector material are also not quite similar, and aluminium and aluminium alloy, copper and copper alloy thereof and nickel are as their preferred material.Do not have gap between the joint that such welding is good, do not have electrochemical corrosion, resistance is little, so caloric value is also little, substantially increases the reliability that battery uses.But having welded joint is not an easy thing, and the surface due to aluminium exists the oxide-film of one deck densification, general welding material is difficult to welding, is also that present battery contact produces the difficult problem being badly in need of solving.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of activation emulsion for welding dynamic lithium battery joint, by adopting aluminum alloy material as the substrate of emulsion alloy powder, add the element such as Trace Ag, Ge, improve mechanical property and the tired performance of heat of weld, even if heat-shock also can not produce slight crack or oxidation rate is accelerated, thus ensures low resistivity; Adding micro-Ga element, metal can be improved and show excellent mobile performance in the molten state, fully can produce wetting with mother metal, having market prospects widely popularizing of the activation emulsion for welding dynamic lithium battery joint.
For solving the problems of the technologies described above, the invention provides a kind of activation emulsion for welding dynamic lithium battery joint, Ingredients Weight proportioning comprises:
Become lotion 5%-50%,
Reactive alloys powder 50%-95%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises the film forming agent of 10%-60% and the active brazing flux of 40-90%,
The composition proportion of described reactive alloys powder comprises the impurity of Ge, 0-0.2% of Ga, 0%-0.5% of Ag, 0%-0.5% of Cu, 0%-5% of Zn, 0%-10% of Si, 0%-30% of 1%-40%, and surplus is Al.
In a preferred embodiment of the present invention, described film forming agent be white oil, polyvinyl alcohol, propane diols, polypropylene, methyl-silicone oil, polyethylene glycol, glycerine one or more.
In a preferred embodiment of the present invention, the Ingredients Weight proportioning of described active brazing flux comprises the AlF of KF, 35%-70% of 20%-60% 3, 0%-5% K 2siF 6, 0%-5% K 2geF 6, 0%-4% KBF 4, 0%-3% ZnF 2.
In a preferred embodiment of the present invention, the powder size of described active brazing flux is 350-450 order.
In a preferred embodiment of the present invention, the powder size of described reactive alloys powder is 350-450 order.
The invention has the beneficial effects as follows: the present invention has modest viscosity for the activation emulsion welding dynamic lithium battery joint, does not trail, reinforced convenient, welding temperature is low, mobility is excellent, containing corrosion-free after halide, welding, residual nonhygroscopic, weld out excellent physical properties, the tired performance of heat resistanceheat resistant significantly, is not oxidized, electrical conductivity is high, weld the advantages such as easy to use, the activation emulsion for welding dynamic lithium battery joint universal on have market prospects widely.
Detailed description of the invention
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention comprises:
For welding an activation emulsion for dynamic lithium battery joint, Ingredients Weight proportioning comprises:
Become lotion 5%-50%,
Reactive alloys powder 50%-95%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises the film forming agent of 10%-60% and the active brazing flux of 40-90%,
The composition proportion of described reactive alloys powder comprises the impurity of Ge, 0-0.2% of Ga, 0%-0.5% of Ag, 0%-0.5% of Cu, 0%-5% of Zn, 0%-10% of Si, 0%-30% of 1%-40%, and surplus is Al.
Preferably, described film forming agent be white oil, polyvinyl alcohol, propane diols, polypropylene, methyl-silicone oil, polyethylene glycol, glycerine one or more.
Preferably, the Ingredients Weight proportioning of described active brazing flux comprises the AlF of KF, 35%-70% of 20%-60% 3, 0%-5% K 2siF 6, 0%-5% K 2geF 6, 0%-4% KBF 4, 0%-3% ZnF 2.
Preferably, the powder size of described active brazing flux is 350-450 order.
Preferably, the powder size of described reactive alloys powder is 350-450 order.
Embodiment one:
For welding an activation emulsion for dynamic lithium battery joint, Ingredients Weight proportioning comprises: become lotion 20%, reactive alloys powder 80%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises: polyvinyl alcohol 5%, white oil 35%, active brazing flux 60%,
The Ingredients Weight proportioning of described reactive alloys powder comprises: Si:3%, Cu:0.05%, Ag:0.1%, Ga:0.006%, Ge:0.05%, and impurity is less than 0.2%, and surplus is Al.
Embodiment two:
For welding an activation emulsion for dynamic lithium battery joint, Ingredients Weight proportioning comprises: become lotion 25%, reactive alloys powder 75%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises: methyl-silicone oil 10%, white oil 35%, active brazing flux 55%,
The Ingredients Weight proportioning of described reactive alloys powder comprises: Si:20%, Zn:0%, Cu:0.1%, Ag:0.1%, Ga:0.02%, Ge:0.1%, and impurity is less than 0.2%, and surplus is Al.
Embodiment three:
For welding an activation emulsion for dynamic lithium battery joint, Ingredients Weight proportioning comprises: become lotion 20%, reactive alloys powder 80%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises: polyethylene glycol 10%, propane diols 25%, active brazing flux 65%,
The Ingredients Weight proportioning of described reactive alloys powder comprises: Si:13%, Zn:0%, Cu:0.05%, Ag:0.1%, Ga:0.04%, Ge:0.05%, and impurity is less than 0.2%, and surplus is Al.
Embodiment four:
For welding an activation emulsion for dynamic lithium battery joint, Ingredients Weight proportioning comprises: become lotion 14%, reactive alloys powder 86%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises: glycerine 2%, polyethylene glycol 38%, active brazing flux 60%,
The Ingredients Weight proportioning of described reactive alloys powder comprises: Si:1%, Zn:6%, Cu:0.02%, Ag:0%, Ga:0.1%, Ge:0.05%, and impurity is less than 0.2%, and surplus is Al.
Embodiment five:
For welding an activation emulsion for dynamic lithium battery joint, Ingredients Weight proportioning comprises: become lotion 14%, reactive alloys powder 86%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises: glycerine 2%, polyethylene glycol 38%, active brazing flux 60%,
The Ingredients Weight proportioning of described reactive alloys powder comprises: Si:16%, Zn:2%, Cu:0.02%, Ag:0.5%, Ga:0.1%, Ge:0.08%, and impurity is less than 0.2%, and surplus is Al.
The present invention for welding the beneficial effect of the activation emulsion of dynamic lithium battery joint is:
One, by adopting aluminum alloy material as the substrate of emulsion alloy powder, add the element such as Trace Ag, Ge, improve mechanical property and the tired performance of heat of weld, even if heat-shock also can not produce slight crack or oxidation rate is accelerated, thus ensure low resistivity;
Two, by adding micro-Ga element, improve metal and showing excellent mobile performance in the molten state, and fully producing wetting with mother metal;
Three, by adopting Transition-metal Alloys metal, greatly reduce different metal and weld electrochemical corrosion between the latter two, the active brazing flux activation temperature of emulsion is low, and wetting time is short, and residual nonhygroscopic, postwelding is corrosion-free, improves the reliability of battery contact.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims (5)

1. for welding an activation emulsion for dynamic lithium battery joint, it is characterized in that, Ingredients Weight proportioning comprises:
Become lotion 5%-50%,
Reactive alloys powder 50%-95%,
Wherein, the Ingredients Weight proportioning of described one-tenth lotion comprises the film forming agent of 10%-60% and the active brazing flux of 40-90%,
The composition proportion of described reactive alloys powder comprises the impurity of Ge, 0-0.2% of Ga, 0%-0.5% of Ag, 0%-0.5% of Cu, 0%-5% of Zn, 0%-10% of Si, 0%-30% of 1%-40%, and surplus is Al.
2. the activation emulsion for welding dynamic lithium battery joint according to claim 1, is characterized in that, described film forming agent be white oil, polyvinyl alcohol, propane diols, polypropylene, methyl-silicone oil, polyethylene glycol, glycerine one or more.
3. the activation emulsion for welding dynamic lithium battery joint according to claim 1, is characterized in that, the Ingredients Weight proportioning of described active brazing flux comprises the AlF of KF, 35%-70% of 20%-60% 3, 0%-5% K 2siF 6, 0%-5% K 2geF 6, 0%-4% KBF 4, 0%-3% ZnF 2.
4. the activation emulsion for welding dynamic lithium battery joint according to claim 3, is characterized in that, the powder size of described active brazing flux is 350-450 order.
5. the activation emulsion for welding dynamic lithium battery joint according to claim 1, is characterized in that, the powder size of described reactive alloys powder is 350-450 order.
CN201510826184.1A 2015-11-25 2015-11-25 A kind of activation emulsion for being used to weld dynamic lithium battery joint Active CN105364334B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5211910A (en) * 1990-01-26 1993-05-18 Martin Marietta Corporation Ultra high strength aluminum-base alloys
CN1586795A (en) * 2004-08-31 2005-03-02 广州有色金属研究院 Copper welding paste for automatic brazing and its preparing method
CN1686662A (en) * 2005-04-29 2005-10-26 华南理工大学 Self soldering solder used for brazing connecting PTC ceramic and aluminium alloy
CN102303201A (en) * 2011-08-19 2012-01-04 北京工业大学 Intermediate-temperature aluminum-based aluminum alloy solder paste and preparation method thereof
CN102441747A (en) * 2011-06-28 2012-05-09 力创(台山)电子科技有限公司 Brazing flux for welding aluminum and aluminum alloy flux-cored wires
CN102601537A (en) * 2012-03-22 2012-07-25 浙江亚通焊材有限公司 Aqueous aluminum base solder paste
CN103317253A (en) * 2013-06-03 2013-09-25 北京科技大学 Zn-Al-Cu-based solder for aluminum/copper brazing and preparing method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5211910A (en) * 1990-01-26 1993-05-18 Martin Marietta Corporation Ultra high strength aluminum-base alloys
CN1586795A (en) * 2004-08-31 2005-03-02 广州有色金属研究院 Copper welding paste for automatic brazing and its preparing method
CN1686662A (en) * 2005-04-29 2005-10-26 华南理工大学 Self soldering solder used for brazing connecting PTC ceramic and aluminium alloy
CN102441747A (en) * 2011-06-28 2012-05-09 力创(台山)电子科技有限公司 Brazing flux for welding aluminum and aluminum alloy flux-cored wires
CN102303201A (en) * 2011-08-19 2012-01-04 北京工业大学 Intermediate-temperature aluminum-based aluminum alloy solder paste and preparation method thereof
CN102601537A (en) * 2012-03-22 2012-07-25 浙江亚通焊材有限公司 Aqueous aluminum base solder paste
CN103317253A (en) * 2013-06-03 2013-09-25 北京科技大学 Zn-Al-Cu-based solder for aluminum/copper brazing and preparing method thereof

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