CN205406570U - Battery steel casing of anti -corrosion performance improvement - Google Patents

Battery steel casing of anti -corrosion performance improvement Download PDF

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Publication number
CN205406570U
CN205406570U CN201521072938.0U CN201521072938U CN205406570U CN 205406570 U CN205406570 U CN 205406570U CN 201521072938 U CN201521072938 U CN 201521072938U CN 205406570 U CN205406570 U CN 205406570U
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nickel
plating layer
bright
sulfur
bright nickel
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CN201521072938.0U
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柳依玲
蒲建平
邓夏义
乐广敏
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Fujian Jinyang Technology Co Ltd
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Fujian Jinyang Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model provides a battery steel casing of anti -corrosion performance improvement, includes a box hat substrate and a bright plating nickel dam, its characterized in that, an oxidation potential are greater than half bright plating nickel dam and an oxidation potential of bright plating nickel dam are less than the high -sulfur nickel coating of bright plating nickel dam, half bright plating nickel dam cover in the surface of box hat substrate, the upper surface of half bright plating nickel dam covers to be had the high -sulfur nickel coating, the upper surface of high -sulfur nickel coating covers to be had bright plating nickel dam. The utility model discloses a between the bright plating nickel dam and half bright plating nickel dam of double -deck nickel, strike the high -sulfur nickel plating cladding material that plates about upper story thickness is about 1 mu m, owing to there is the potential difference between the three -layer nickel for the corrosive protection performance of half bright plating nickel dam in the three -layer nickel system can arrive very big promotion, is favorable to the further etch rate of corrosive medium to the iron -based body that has postponed, and showing the corrosion resisting property who improves cladding material.

Description

A kind of battery steel shell of corrosion resistance improvement
Technical field
This utility model relates to a kind of battery steel shell production technology, refers in particular to the battery steel shell of a kind of corrosion resistance improvement.
Background technology
Aluminium alloy is the general name of the alloy being base with aluminum, and main alloy element includes copper, silicon, magnesium, zinc, manganese, and minor element contains nickel, ferrum, titanium, lithium, and essential element content in alloy, proportioning and impurity content alloy end properties have a significant impact.
Battery steel shell is one of critical material producing aneroid battery.The production of current battery box hat is divided into two big classes substantially, and one is after nickel plated steel strip punch forming, then defat, antirust treatment, is called first nickel plating box hat;Another kind is by after steel strip stamping molding, then defat, electronickelling process, and electroplate box hat after being called.In prior art, the technology of the nineties in last century it is also maintained at present for the barrel plating technology of rear plating box hat, by constantly perfect, select additive mode electronickelling, due to the continuous change of battery technology, battery performance improves constantly, and service time of battery is more and more longer, the antiseptic property needing battery steel shell to be also correspondingly improved, and original nickel plating box hat is difficult to meet the demand of high-performance, high-capacity battery.
Utility model content
This utility model provides the battery steel shell of a kind of corrosion resistance improvement, and its main purpose is in that to overcome the existing battery steel shell defect that corrosion resistance is not enough in life-time service process.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of battery steel shell of corrosion resistance improvement, including a box hat base material and a bright nickel plating layer, an oxidizing potential more than high-sulfur nickel coating less than described bright nickel plating layer of half bright nickel plating layer of described bright nickel plating layer and an oxidizing potential, described half bright nickel plating layer is covered in the surface of described box hat base material, the upper surface of described half bright nickel plating layer is coated with described high-sulfur nickel coating, and the upper surface of described high-sulfur nickel coating is coated with described bright nickel plating layer.
Further, the thickness summation of described half bright nickel plating layer, high-sulfur nickel coating and bright nickel plating layer is 1.8 μm~2.3 μm.
Further, the thickness summation of described half bright nickel plating layer, high-sulfur nickel coating and bright nickel plating layer is 2 μm.
Further, the thickness of described high-sulfur nickel coating is 0.8 μm~1.2 μm.
Further, the thickness of described high-sulfur nickel coating is 1 μm.
Compared to the prior art, what this utility model produced has the beneficial effects that:
1, in this utility model, by arranging bright nickel plating layer and half bright nickel plating layer, and between the bright nickel plating layer and half bright nickel plating layer of double layer nickel, strike plating last layer thickness is about the high-sulfur nickel plating coating of about 1 μm, owing to there is potential difference between three layers nickel, half bright nickel plating layer current potential is more than bright nickel plating layer current potential, bright nickel plating layer current potential is more than high-sulfur nickel coating current potential, thus in corrosion process, the coating that current potential is relatively born is as anode, preferentially it is corroded, so the anti-corrosion capability of half bright nickel plating layer in three layers nickel system can arrive lifting greatly, be conducive to the corrosion rate being delayed corrosive medium further to iron-based body, and significantly improve the decay resistance of coating.
2, the coating prepared by this utility model technique not only antiseptic property significantly improves, equal nickel plating layer thick antiseptic property at least doubles, and the electric conductivity of coating, weldability, adhesion are good, it is possible to be well adapted for meeting the demand of high-performance, high-capacity battery.
3, in this utility model, conventional pure nickel plating scheme of comparing, this utility model can significantly improve the antiseptic property of coating, and the elongation percentage of coating, electric conductivity, welding performance, adhesion are unchanged simultaneously, meets improving and the prolongation in service life of battery capacity.
Accompanying drawing explanation
Fig. 1 is the structural representation of battery steel shell described in this utility model embodiment one.
Fig. 2 is the preparation flow figure of battery steel shell described in this utility model embodiment one.
Fig. 3 is the structural representation of battery steel shell described in this utility model embodiment two.
Fig. 4 is the preparation flow figure of battery steel shell described in this utility model embodiment two.
Detailed description of the invention
Detailed description of the invention of the present utility model is described with reference to the accompanying drawings.
Embodiment one
See figures.1.and.2.A kind of battery steel shell 1 improving corrosive nature, including box hat base material 2 and a bright nickel plating layer 3, the surface of described box hat base material 2 is coated with the oxidizing potential half bright nickel plating layer 4 more than described bright nickel plating layer 3, and the upper surface of this half bright nickel plating layer 4 is coated with above-mentioned bright nickel plating layer 3.
See figures.1.and.2.As the preferred version of the present embodiment, the thickness summation of described half bright nickel plating layer 4 and bright nickel plating layer 3 is 1.8 μm~2.3 μm.The thickness of half bright nickel plating layer 4 described in scheme that is more highly preferred to as the present embodiment is 0.5 μm~1.5 μm.
See figures.1.and.2.The thickness of wherein said half bright nickel plating layer 4 can be 1.2 μm, and the thickness of bright nickel plating layer 3 can be 0.8 μm simultaneously.
See figures.1.and.2.The preparation method of above-mentioned battery steel shell 1 is:
A kind of battery steel shell duplex nickel plating technique, comprises the following steps:
A, battery steel shell 1 is carried out pretreatment.This step can be preferably: battery steel shell 1 pretreatment washes this four procedure after including the defat → washing → pickling → acid sequentially carried out.
B, pretreated battery steel shell 1 surface is once electroplated, a semi-bright nickel coating on plating.This step can be preferably: described once plating includes being placed in battery steel shell 1 in a semi-bright nickel technique electroplate liquid electroplates 120 minutes, wherein semi-bright nickel technique electroplate liquid includes: nickel sulfate 300 g/l, Nickel dichloride. 50 g/l, boric acid 40 g/l, coumarin 0.15 g/l, 0.15 g/l of formaldehyde, the pH of this semi-bright nickel technique electroplate liquid is 4.0, and solution temperature is 50 DEG C.
C, to through step b process after battery steel shell 1 carry out second time electroplating, a bright nickel coating on plating, the oxidizing potential of this bright nickel plating layer 3 is less than described half bright nickel plating layer 4.This step can be preferably: described second time electroplating includes the battery steel shell 1 after step b processes and is placed in a bright nickel technique electroplate liquid and electroplates 60 minutes, wherein bright nickel technique electroplate liquid includes: nickel sulfate 300 g/l, Nickel dichloride. 50 g/l, boric acid 40 g/l, additive 10 ml l, the pH of this bright nickel technique electroplate liquid is 4.0, and solution temperature is 50 DEG C.
D, battery steel shell 1 sequentially reclaims → washes → antirust treatment → dry this four procedure.
In the present embodiment, by the semi-bright nickel coating of plating one layer not sulfur-bearing, the then bright coating of one layer of sulfur-bearing of re-plating on present battery steel shell 1.Owing to the bright nickel current potential of sulfur-bearing is more negative, between bright nickel and semi-bright nickel, produce potential difference, form corrosion galvanic cell, the bright nickel that sulfur-bearing is higher becomes anode, and the semi-bright nickel of bottom becomes negative electrode, and bright nickel layer becomes sacrifice coating and is corroded, it is delayed the corrosive medium corrosion rate to iron-based body, significantly improves the decay resistance of coating.
Embodiment two
With reference to Fig. 3 and Fig. 4.A kind of battery steel shell 1 of corrosion resistance improvement, including high-sulfur nickel coating 5 less than described bright nickel plating layer 3 of box hat base material 2, bright nickel plating layer 3, the oxidizing potential half bright nickel plating layer 4 more than described bright nickel plating layer 3 and an oxidizing potential, described half bright nickel plating layer 4 is covered in the surface of described box hat base material 2, the upper surface of described half bright nickel plating layer 4 is coated with described high-sulfur nickel coating 5, and the upper surface of described high-sulfur nickel coating 5 is coated with described bright nickel plating layer 3.
With reference to Fig. 3 and Fig. 4.As the preferred version of the present embodiment, the thickness summation of described half bright nickel plating layer 4, high-sulfur nickel coating 5 and bright nickel plating layer 3 is 1.8 μm~2.3 μm.As the scheme that is more highly preferred to of the present embodiment, the thickness of described high-sulfur nickel coating 5 is 0.8 μm~1.2 μm.As the preferred plan of the present embodiment, the thickness of described high-sulfur nickel coating 5 is 1 μm.
See figures.1.and.2.The thickness of wherein said half bright nickel plating layer 4 can be 0.4 μm, and the thickness of bright nickel plating layer 3 can be 0.6 μm simultaneously.The thickness of described high-sulfur nickel coating 5 can be 1 μm.
With reference to Fig. 3 and Fig. 4.The preparation method of above-mentioned battery steel shell 1 is:
A kind of battery steel shell 1 three layers nickel plating technology, comprises the following steps:
A, battery steel shell 1 is carried out pretreatment.This step can be preferably: battery steel shell 1 pretreatment washes this four procedure after including the defat → washing → pickling → acid sequentially carried out.
B, pretreated battery steel shell 1 surface is once electroplated, a semi-bright nickel coating on plating.This step can be preferably: described once plating includes being placed in battery steel shell 1 in a semi-bright nickel technique electroplate liquid electroplates 100 minutes, wherein semi-bright nickel technique electroplate liquid includes: nickel sulfate 300 g/l, Nickel dichloride. 50 g/l, boric acid 40 g/l, coumarin 0.15 g/l, 0.15 g/l of formaldehyde, the pH of this semi-bright nickel technique electroplate liquid is 4.0, and solution temperature is 50 DEG C.
C, to through step b process after battery steel shell 1 carry out second time electroplating, a high-sulfur nickel coating on plating.This step can be preferably: described second time electroplating includes being placed in a high-sulfur nickel technique electroplate liquid by the battery steel shell 1 included after step b processes and electroplates 20 minutes, wherein high-sulfur nickel technique electroplate liquid includes: nickel sulfate 300 g/l, Nickel dichloride. 50 g/l, boric acid 40 g/l, benzene sulfinic acid sodium salt 1 g/l, butynediols 0.5 g/l, 1 g/l of saccharin, the pH of this high-sulfur nickel technique electroplate liquid is 2.5, and solution temperature is 50 DEG C.
D, to through step c process after battery steel shell 1 carry out three times plating, a bright nickel plating layer 3 on plating.This step can be preferably: described three plating include the battery steel shell 1 after step c processes and are placed in a bright nickel technique electroplate liquid and electroplate 60 minutes, wherein bright nickel technique electroplate liquid includes: nickel sulfate 300 g/l, Nickel dichloride. 50 g/l, boric acid 40 g/l, additive 10 ml l, the pH of this bright nickel technique electroplate liquid is 4.0, and solution temperature is 50 DEG C.
E, battery steel shell 1 sequentially reclaims → washes → antirust treatment → dry this four procedure.
In the present embodiment, by arranging bright nickel plating layer 3 and half bright nickel plating layer 4, and between bright nickel plating layer 3 and the half bright nickel plating layer 4 of double layer nickel, strike plating last layer thickness is about the high-sulfur nickel plating coating of about 1 μm, owing to there is potential difference between three layers nickel, half bright nickel plating layer 4 current potential is more than bright nickel plating layer 3 current potential, bright nickel plating layer 3 current potential is more than high-sulfur nickel coating 5 current potential, thus in corrosion process, the coating that current potential is relatively born is as anode, preferentially it is corroded, so the anti-corrosion capability of half bright nickel plating layer 4 in three layers nickel system can arrive lifting greatly, be conducive to the corrosion rate being delayed corrosive medium further to iron-based body, and significantly improve the decay resistance of coating.
In sum, adopt the battery steel shell 1 that the battery steel shell 1 that the duplex nickel plating technique that embodiment one discloses prepares obtains relative to existing common monolayer nickel technique, its corrosion resistance promotes several times, and the battery steel shell 1 that the three layers nickel plating technology disclosed in embodiment two prepares is relative to the battery steel shell 1 in embodiment one, its corrosion resistance promotes again several times.
Additive used in description above is for improving battery steel shell coating surface state, improving the electroplating additive of its electrical property and welding performance in field of electroplating, examples of such additives is the common technology in this field, thus its concrete composition is not described in detail herein.
Above are only detailed description of the invention of the present utility model, but design concept of the present utility model is not limited thereto, all changes utilizing this design that this utility model carries out unsubstantiality, the behavior invading this utility model protection domain all should be belonged to.

Claims (5)

1. the battery steel shell of a corrosion resistance improvement, including a box hat base material and a bright nickel plating layer, it is characterized in that, also include an oxidizing potential more than high-sulfur nickel coating less than described bright nickel plating layer of half bright nickel plating layer of described bright nickel plating layer and an oxidizing potential, described half bright nickel plating layer is covered in the surface of described box hat base material, the upper surface of described half bright nickel plating layer is coated with described high-sulfur nickel coating, and the upper surface of described high-sulfur nickel coating is coated with described bright nickel plating layer.
2. the battery steel shell of a kind of corrosion resistance as claimed in claim 1 improvement, it is characterised in that: the thickness summation of described half bright nickel plating layer, high-sulfur nickel coating and bright nickel plating layer is 1.8 μm~2.3 μm.
3. the battery steel shell of a kind of corrosion resistance as claimed in claim 2 improvement, it is characterised in that: the thickness summation of described half bright nickel plating layer, high-sulfur nickel coating and bright nickel plating layer is 2 μm.
4. the battery steel shell of a kind of corrosion resistance improvement as described in any one in claim 1-3, it is characterised in that: the thickness of described high-sulfur nickel coating is 0.8 μm~1.2 μm.
5. the battery steel shell of a kind of corrosion resistance as claimed in claim 4 improvement, it is characterised in that: the thickness of described high-sulfur nickel coating is 1 μm.
CN201521072938.0U 2015-12-22 2015-12-22 Battery steel casing of anti -corrosion performance improvement Active CN205406570U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105525317A (en) * 2015-12-22 2016-04-27 福建金杨科技股份有限公司 Three-layer nickel plating process for battery steel shell and battery steel shell manufactured by process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105525317A (en) * 2015-12-22 2016-04-27 福建金杨科技股份有限公司 Three-layer nickel plating process for battery steel shell and battery steel shell manufactured by process

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