Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A double-layer nickel plating process for a battery steel shell and a battery steel shell obtained by the process

A battery steel shell and process technology, applied in battery pack parts, battery box/jacket, battery box/cover material, etc., can solve problems such as insufficient corrosion resistance, achieve no change in bonding force, delay corrosion rate, improve The effect of anti-corrosion properties

Active Publication Date: 2018-02-16
FUJIAN JINYANG TECH CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a double-layer nickel-plating process for battery steel shells and the battery steel shells produced by the process, the main purpose of which is to overcome the defects of insufficient corrosion resistance of existing battery steel shells during long-term use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A double-layer nickel plating process for a battery steel shell and a battery steel shell obtained by the process
  • A double-layer nickel plating process for a battery steel shell and a battery steel shell obtained by the process
  • A double-layer nickel plating process for a battery steel shell and a battery steel shell obtained by the process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] refer to figure 1 and figure 2 . A battery steel case 1 with improved corrosion performance, comprising a steel case base material 2 and a bright nickel-plated layer 3, the surface of the steel case base material 2 is covered with a semi-bright surface with an oxidation potential greater than that of the bright nickel-plated layer 3 Nickel plating layer 4 , the upper surface of the semi-bright nickel plating layer 4 is covered with the above bright nickel plating layer 3 .

[0032] refer to figure 1 and figure 2 . As a preferred solution of this embodiment, the sum of the thicknesses of the semi-bright nickel plating layer 4 and the bright nickel plating layer 3 is 1.8 μm-2.3 μm. As a more preferred solution of this embodiment, the thickness of the semi-bright nickel plating layer 4 is 0.5 μm˜1.5 μm.

[0033] refer to figure 1 and figure 2 . The thickness of the semi-bright nickel plating layer 4 may be 1.2 μm, while the thickness of the bright nickel platin...

Embodiment 2

[0042] refer to image 3 and Figure 4 . A battery steel case 1 with improved corrosion resistance, comprising a steel case base material 2, a bright nickel-plated layer 3, a semi-bright nickel-plated layer 4 with an oxidation potential greater than that of the bright nickel-plated layer 3, and a semi-bright nickel-plated layer 4 with an oxidation potential lower than The high-sulfur nickel plating layer 5 of the bright nickel plating layer 3, the semi-bright nickel plating layer 4 covers the surface of the steel shell base material 2, and the upper surface of the semi-bright nickel plating layer 4 is covered with the High sulfur nickel plating layer 5, the upper surface of the high sulfur nickel plating layer 5 is covered with the bright nickel plating layer 3.

[0043] refer to image 3 and Figure 4. As a preferred solution of this embodiment, the sum of the thicknesses of the semi-bright nickel plating layer 4 , the high-sulfur nickel plating layer 5 and the bright ni...

Embodiment 3

[0054] Select three groups of samples to analyze the anti-corrosion performance of the experimental products

[0055] Coating thickness of each sample (thickness of the outer middle part of the steel shell μm)

[0056]

1

2

3

4

5

Sample A

2.03

1.98

1.94

2.13

1.89

Sample B

1.98

2.00

1.88

1.99

2.09

Sample C

2.12

1.95

2.22

1.97

1.90

[0057] Among them, sample A is the battery steel case 1 prepared by the existing electroplating technology, sample B is the battery steel case 1 described in the first embodiment, and sample C is the battery steel case 1 described in the second embodiment.

[0058] Figure 5 An example diagram showing the antirust effect of the battery steel case 1 in the prior art in the salt spray test. Figure 6 An example diagram showing the antirust effect of the battery steel case 1 in Example 1 of the present invention subjected to a salt spray test. Figure 7 It ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A double-layer nickel-plating process for battery steel shells, comprising the following steps: a. pretreating the battery steel shells; b. performing primary electroplating on the surface of the pretreated battery steel shells to coat the upper half of the bright nickel coating; c. Secondary electroplating is performed on the steel case of the battery after the treatment in step b, and a bright nickel plating layer is plated, and the oxidation potential of the bright nickel plating layer is lower than that of the semi-bright nickel plating layer. The invention also discloses a battery steel case prepared by the above process. In the present invention, by plating a layer of sulfur-free semi-bright nickel coating on the current battery steel case, and then electroplating a layer of sulfur-containing bright coating. Since the potential of bright nickel containing sulfur is relatively negative, a potential difference is generated between bright nickel and semi-bright nickel to form a corroded primary battery. The bright nickel with higher sulfur content becomes the anode, the semi-bright nickel at the bottom becomes the cathode, and the bright nickel layer Corroded as a sacrificial coating, the corrosion rate of the corrosive medium to the iron substrate is delayed, and the corrosion resistance of the coating is significantly improved.

Description

technical field [0001] The invention relates to a production technology of a battery steel case, in particular to a double-layer nickel plating process for a battery steel case and the battery steel case produced by the process. Background technique [0002] Battery steel case is one of the key materials for the production of dry batteries. At present, the production of battery steel shells is basically divided into two categories, one is nickel-plated steel strips stamped and formed, then degreased and anti-rust, called nickel-plated steel shells first; the other is stamped and formed steel strips, After degreasing and electroplating nickel treatment, it is called post-electroplating steel shell. In the existing technology, the barrel plating technology for post-galvanized steel shells is still maintained at the technology of the 1990s. Through continuous improvement, the additive method of nickel plating is selected. Due to the continuous change of battery technology, the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/14H01M2/02H01M50/124H01M50/145
CPCC25D5/14H01M50/116H01M50/124Y02E60/10
Inventor 柳依玲蒲建平邓夏义乐广敏
Owner FUJIAN JINYANG TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com