CN113199170A - Gel type storage battery soldering flux and preparation method thereof - Google Patents
Gel type storage battery soldering flux and preparation method thereof Download PDFInfo
- Publication number
- CN113199170A CN113199170A CN202110449194.3A CN202110449194A CN113199170A CN 113199170 A CN113199170 A CN 113199170A CN 202110449194 A CN202110449194 A CN 202110449194A CN 113199170 A CN113199170 A CN 113199170A
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- China
- Prior art keywords
- parts
- soldering flux
- storage battery
- type storage
- gel type
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Classifications
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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
- B23K35/36—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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3607—Silica or silicates
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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
- B23K35/36—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
-
- 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
Abstract
The invention discloses a gel type storage battery soldering flux and a preparation method thereof, wherein the soldering flux comprises the following components in parts by mass: 10-15 parts of sodium silicate, 5-10 parts of lithium magnesium silicate, 2-5 parts of pentaerythritol, 4-10 parts of oxalic acid, 4-10 parts of ethyl acetate, 3-5 parts of boric acid and 50-70 parts of pure water. The soldering flux prepared by the components and the preparation method has good thixotropy, is in a liquid state when being prepared, is in a gel state quickly after standing, is suitable for cast welding of storage batteries, has stable components, good soldering effect, easy cleaning, safety, environmental protection and convenient use, and avoids polar group short circuit caused by splashing of the soldering flux and adhesion of the soldering flux on partition board paper.
Description
Technical Field
The invention relates to the technical field of electronic industry welding, in particular to a gel type storage battery soldering flux and a preparation method thereof.
Background
At present, the storage battery bus bar is generally formed by automatic cast welding of a machine with two or even a plurality of batteries in one die. The casting quality is influenced by a plurality of factors, and one important factor is soldering flux. The currently used soldering flux mainly has two types, one is solvent type soldering flux, the other is solid paste type soldering flux, and the solvent type soldering flux is applied more. The solvent type soldering flux has a good practical application effect, but the cast-weld quality is unstable, and defective products with phenomena of false welding, over-melting, chip falling and the like appear, and the solvent type soldering flux is more obvious particularly when used for manufacturing a plurality of batteries in one die and producing polar plates in a continuous casting and rolling mode. Meanwhile, the solvent type soldering flux is generally added into sponge for use when in use, and the phenomenon that the extruded soldering flux is splashed onto a polar group easily occurs in the use process, so that the performance of the battery is influenced, and meanwhile, the phenomenon that the flux is splashed onto the body of an operator or even eyes is occasionally caused; in addition, in the process of cast-welding the pole lug by dipping the solvent type soldering flux, if the soldering flux is dipped too much, the problem that the separator paper sticks to the soldering flux to cause the pole group to be short-circuited is easily generated. The solid paste type soldering flux has more residues in the later period, so that the electrical performance is easily influenced, a cleaning process is required to be introduced, and the production cost of the storage battery is greatly increased.
Chinese patent publication No. CN1836825A discloses a water-soluble flux for lead-free solder, which is a solution-based flux prepared by using boric acid, an organic acid activator (organic acid is selected from oxalic acid, succinic acid, glutaric acid, adipic acid, 6-oxoheptanoic acid, 2-furancarboxylic acid, L-arginine, maleic acid, acrylic acid, citric acid, sorbic acid, and lactic acid), a non-ionic surfactant or a cationic surfactant, a cosolvent (selected from glycerol, hexanediol, diethylene glycol, pentaerythritol, diethylene glycol-ethyl ether, diethylene glycol butyl ether, and polyethylene glycol series having an average relative molecular mass of 200-600), a film-forming agent, a corrosion inhibitor, and deionized water as a solvent to obtain a filtrate.
Disclosure of Invention
The invention aims to provide a gel type storage battery soldering flux and a preparation method thereof, which solve the problems of unstable components, low use safety, high cast-weld failure rate and inconvenient operation of a solvent type soldering flux in the soldering process of a storage battery in the background technology; the solid paste type soldering flux has the problems that the electrical performance is easily influenced due to more residues in the later period, and the production cost of the storage battery is increased due to the fact that the solid paste type soldering flux is difficult to clean.
In order to achieve the purpose, the invention adopts the following technical scheme:
the gel type storage battery soldering flux comprises the following components in parts by mass: 10-15 parts of sodium silicate, 5-10 parts of lithium magnesium silicate, 2-5 parts of pentaerythritol, 4-10 parts of oxalic acid, 4-10 parts of ethyl acetate, 3-5 parts of boric acid and 50-70 parts of pure water.
The invention also provides a preparation method of the soldering flux, which comprises the steps of uniformly mixing pure water, ethyl acetate, oxalic acid, pentaerythritol, boric acid, sodium silicate and lithium magnesium silicate according to the formula amount in a shearing and stirring manner to prepare liquid soldering flux, placing the liquid soldering flux in a storage device in a stirring state, sealing, standing and storing to obtain a finished product of the gel soldering flux.
Compared with the prior art, the invention has the beneficial effects that:
1. the soldering flux prepared by the components and the preparation method is gel-type soldering flux, is suitable for cast welding of storage batteries, has stable components, good wettability and good soldering effect, is safe, environment-friendly and convenient to use, and avoids the situation that the soldering flux splashes and sticks to partition board paper to cause short circuit of a polar group when in use; meanwhile, the gel type soldering flux is easy to clean, low in use cost, low in toxicity and harmless;
2. the sodium silicate and the lithium magnesium silicate are both good inorganic gelling agents, the sodium silicate and the lithium magnesium silicate are matched with each other to keep the soldering flux in a gelling state, and the components of the sodium silicate and the lithium magnesium silicate do not react with other components in the soldering flux; the ethyl acetate and the pentaerythritol are attached to the surface of the cast-weld part together, so that the surface activity of the cast-weld part can be reduced, a good crescent climbing welding effect is formed even during cast welding, and the cast welding effect is better; the combination of oxalic acid and boric acid has stronger capability of removing oxides on the surface of a cast weldment, removes high-melting-point substances on the surface of the weldment, and the test cast weldment is easier to weld;
3. the gel type soldering flux prepared by the preparation method has good thixotropy, is liquid when being prepared, can be in gel state after standing, and is placed in a storage device in a stirring state in the preparation process, so that premature thixotropy of the soldering flux is avoided, and the cast-weld effect of the soldering flux is ensured.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example 1
Adding 59 parts of pure water into a high-speed shearing machine, starting the shearing machine, sequentially adding 5 parts of ethyl acetate, 10 parts of oxalic acid, 3 parts of pentaerythritol and 3 parts of boric acid from a feeding port, and stirring and mixing for 15-20 min; slowly adding 10 parts of sodium silicate and 10 parts of magnesium lithium silicate in sequence, and continuously stirring for 30-40 min; and under the stirring state, placing the prepared liquid soldering flux into a soldering flux storage barrel for standing, sealing and storing.
Example 2
The formula amount of the soldering flux in the embodiment is as follows: 15 parts of sodium silicate, 5 parts of lithium magnesium silicate, 58 parts of pure water, 5 parts of pentaerythritol, 4 parts of oxalic acid, 8 parts of ethyl acetate and 5 parts of boric acid.
The rest of the preparation method is the same as example 1.
Example 3
The formula amount of the soldering flux in the embodiment is as follows: 12 parts of sodium silicate, 8 parts of lithium magnesium silicate, 56 parts of pure water, 2 parts of pentaerythritol, 8 parts of oxalic acid, 10 parts of ethyl acetate and 4 parts of boric acid.
The rest of the preparation method is the same as example 1.
Example 4
The formula amount of the soldering flux in the embodiment is as follows: 10 parts of sodium silicate, 8 parts of lithium magnesium silicate, 62 parts of pure water, 5 parts of pentaerythritol, 6 parts of oxalic acid, 4 parts of ethyl acetate and 5 parts of boric acid.
The rest of the preparation method is the same as example 1.
Example 5
The formula amount of the soldering flux in the embodiment is as follows: 14 parts of sodium silicate, 6 parts of lithium magnesium silicate, 57 parts of pure water, 4 parts of pentaerythritol, 8 parts of oxalic acid, 8 parts of ethyl acetate and 3 parts of boric acid.
The rest of the preparation method is the same as example 1.
Claims (5)
1. The gel type storage battery soldering flux is characterized by comprising the following components in parts by mass: 10-15 parts of sodium silicate, 5-10 parts of lithium magnesium silicate, 2-5 parts of pentaerythritol, 4-10 parts of oxalic acid, 4-10 parts of ethyl acetate, 3-5 parts of boric acid and 50-70 parts of pure water.
2. The gel type storage battery soldering flux according to claim 1, which comprises the following components in parts by mass: 10 parts of sodium silicate, 10 parts of lithium magnesium silicate, 3 parts of pentaerythritol, 10 parts of oxalic acid, 5 parts of ethyl acetate, 3 parts of boric acid and 59 parts of pure water.
3. The preparation method of the gel type storage battery soldering flux is characterized by comprising the following steps:
1) adding the pure water with the formula amount into a shearing machine, and opening the shearing machine;
2) adding ethyl acetate, oxalic acid, pentaerythritol and boric acid in formula amounts into a shearing machine in sequence, shearing and stirring;
3) continuously adding the sodium silicate and the magnesium lithium silicate with the formula ratio into the shearing machine in sequence, and shearing and stirring;
4) and under the stirring state, putting the prepared liquid soldering flux into a soldering flux storage barrel, sealing, standing and storing to obtain a finished product of the gel soldering flux.
4. The method for preparing the gel type storage battery soldering flux according to claim 3, wherein in the step 2), the shearing and stirring time is 15-20 min.
5. The method for preparing the gel type storage battery soldering flux according to claim 3, wherein in the step 3), the time for shearing and stirring is 30-40 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110449194.3A CN113199170B (en) | 2021-04-25 | 2021-04-25 | Gel type storage battery soldering flux and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110449194.3A CN113199170B (en) | 2021-04-25 | 2021-04-25 | Gel type storage battery soldering flux and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113199170A true CN113199170A (en) | 2021-08-03 |
| CN113199170B CN113199170B (en) | 2022-10-25 |
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| CN202110449194.3A Active CN113199170B (en) | 2021-04-25 | 2021-04-25 | Gel type storage battery soldering flux and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1836825A (en) * | 2006-04-21 | 2006-09-27 | 北京工业大学 | Water-soluble soldering flux dedicated for lead-free solder |
| CN103433647A (en) * | 2013-09-06 | 2013-12-11 | 天津市恒固科技有限公司 | Water-soluble flux and preparation method of water-soluble flux |
| CN103962753A (en) * | 2013-01-29 | 2014-08-06 | 株式会社田村制作所 | Soldering flux and soldering paste |
| CN104907737A (en) * | 2015-07-02 | 2015-09-16 | 苏州永创达电子有限公司 | Novel cleaning-free soldering flux |
| CN105798482A (en) * | 2016-04-29 | 2016-07-27 | 东莞永安科技有限公司 | Halogen-free non-cleaning flux and preparation method thereof |
| WO2016119096A1 (en) * | 2015-01-29 | 2016-08-04 | 苏州天兼新材料科技有限公司 | Lead-free welding material and method for preparing scaling powder thereof |
| CN112059467A (en) * | 2020-09-22 | 2020-12-11 | 深圳市鑫富锦新材料有限公司 | Lead-free solder alloy soldering paste |
-
2021
- 2021-04-25 CN CN202110449194.3A patent/CN113199170B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1836825A (en) * | 2006-04-21 | 2006-09-27 | 北京工业大学 | Water-soluble soldering flux dedicated for lead-free solder |
| CN103962753A (en) * | 2013-01-29 | 2014-08-06 | 株式会社田村制作所 | Soldering flux and soldering paste |
| CN103433647A (en) * | 2013-09-06 | 2013-12-11 | 天津市恒固科技有限公司 | Water-soluble flux and preparation method of water-soluble flux |
| WO2016119096A1 (en) * | 2015-01-29 | 2016-08-04 | 苏州天兼新材料科技有限公司 | Lead-free welding material and method for preparing scaling powder thereof |
| CN104907737A (en) * | 2015-07-02 | 2015-09-16 | 苏州永创达电子有限公司 | Novel cleaning-free soldering flux |
| CN105798482A (en) * | 2016-04-29 | 2016-07-27 | 东莞永安科技有限公司 | Halogen-free non-cleaning flux and preparation method thereof |
| CN112059467A (en) * | 2020-09-22 | 2020-12-11 | 深圳市鑫富锦新材料有限公司 | Lead-free solder alloy soldering paste |
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| Publication number | Publication date |
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| CN113199170B (en) | 2022-10-25 |
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Effective date of registration: 20220308 Address after: 226400 No. 118 Yalujiang Road, New Area of Rudong Economic Development Zone, Nantong City, Jiangsu Province Applicant after: Jiangsu Hairui Power Supply Co.,Ltd. Address before: 226400 No.1 Yalujiang Road, Rudong Economic Development Zone, Nantong City, Jiangsu Province Applicant before: JIANGSU HAIBAO BATTERY TECHNOLOGY Co.,Ltd. Applicant before: Jiangsu Haibao New Material Technology Co.,Ltd. |
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Address after: 226400 No. 118 Yalujiang Road, New Area of Rudong Economic Development Zone, Nantong City, Jiangsu Province Patentee after: Jiangsu Haibao New Energy Co.,Ltd. Address before: 226400 No. 118 Yalujiang Road, New Area of Rudong Economic Development Zone, Nantong City, Jiangsu Province Patentee before: Jiangsu Hairui Power Supply Co.,Ltd. |
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