Manufacturing method of positive aluminum foil material for pure aluminum-based battery tab

A technology of battery lugs and manufacturing methods, which is applied in the field of aluminum-based batteries, can solve the problems of increased pinholes in processed sheets, prone to pinholes, and increased product failure rate, so as to reduce the difficulty of cutting and avoid sticking knives Effect

Active Publication Date: 2022-08-05
XINJIANG JOINWORLD CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the temperature of the electrolytic aluminum liquid is generally around 930°C, even if it is transferred to the foundry, the temperature will remain between 860 and 900°C. The raw and auxiliary materials used in the electrolysis of aluminum have a large water content, and the temperature of the aluminum liquid after electrolysis is high. , the gas content in the molten aluminum, especially the hydrogen content, is high, so the degassing process before casting and rolling is particularly important. Once the degassing is unfavorable, the gas content of the casting billet will exceed the standard requirement or cause pinholes in the subsequent processing sheet As the degree increases, the product failure rate increases, and even the size of the material design cannot be processed.
[0006] Although the casting-rolling process for producing alum

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
  • Manufacturing method of positive aluminum foil material for pure aluminum-based battery tab
  • Manufacturing method of positive aluminum foil material for pure aluminum-based battery tab
  • Manufacturing method of positive aluminum foil material for pure aluminum-based battery tab

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The process of preparing pure aluminum battery pole ears for the positive aluminum foil material is as follows:

[0043] 1. The average heating treatment of the plate ingot: According to the composition of Table 1, the ingot is made at 605 ° C for an average heating insulation of 8h, and then cooled to 550 ° C for 4h.

[0044] Table 1 ingot composition (wt. %)

[0045] FE SI CU Mn Zn MG GA TI Al％ 0.4415 0.1469 0.0006 0.0006 0.0017 0.0008 0.0087 0.0218 ≥99.30

[0046] 2. Hot rolling: The opening and rolling temperature of the ingot is 540 ° C, the thickness of 19 streams to 7.0mm, the number of rolled lanes is 40 % -60 %, the rolling speed is 60m / min-100m / min, and the final rolling temperature is obtained. Hot -rolled rolling rolled at 285 ° C.

[0047] 3. A cold rolling: The hot rolling roll is obtained by two -time cold rolling rolling band, the roll roughness is 0.45 μm, and the rolling speed is 300m / min. The band is cleaned, and the steel...

Embodiment 2

[0056] 1. The average heat treatment of the tablet: According to the component of Table 3, the ingot is made at 605 ° C for an average heating heat -insulating 8h, and then the temperature of the heating to 550 ° C is 4h.

[0057] Table 3 ingots ingredients (wt. %)

[0058] FE SI CU Mn Zn MG GA TI Al％ 0.4356 0.1382 0.0006 0.0006 0.0019 0.0007 0.0091 0.0215 ≥99.30

[0059] 2. Hot rolling: The opening and rolling temperature of the ingot is 540 ° C, the thickness of 19 streams to 7.0mm, the number of rolled lanes is 40 % -60 %, the rolling speed is 60m / min-100m / min, and the final rolling temperature is obtained. Hot -rolled rolling rolled at 285 ° C.

[0060] 3. A cold rolling: The hot rolling roll is obtained by two -time cold rolling rolling band, the roll roughness is 0.45um, the rolling speed is 300m / min, and the 60#clean oil panel is used before the middle annealing. The band is cleaned, and the steel belt is tightened.

[0061] 4. Intermediate ...

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
Average grain sizeaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a manufacturing method of a positive aluminum foil material for a pure aluminum-based battery tab, and belongs to the technical field of industrial high-purity aluminum. The method comprises the following steps: (1) hot rolling: performing hot rolling on a pure aluminum cast ingot after soaking treatment to obtain a hot-rolled coiled material with the thickness of 5-7mm; (2) carrying out 2-3 passes of cold rolling to obtain a hard cold-rolled coil of 2.0-3.5 mm; (3) intermediate annealing is conducted, specifically, the intermediate annealing temperature is controlled to be 400-450 DEG C, and the heat preservation time is 6-12 h; (4) performing cold rolling for 4-8 passes until the thickness is 0.1-0.4 mm to obtain a hard foil coil finished product; and (5) annealing the finished product to obtain a soft foil coil finished product with the thickness of 0.1-0.4 mm and the tensile strength of more than or equal to 80MPa. According to the method disclosed by the invention, the high-conductivity, high-bending and high-surface tab positive electrode aluminum strip material with excellent performance and high conductivity of 0.1 mm-0. 4mm is prepared.

Description

Technical field [0001] The invention involves the field of aluminum battery technology, which specifically involves a manufacturing method for a positive aluminum foil material for a pure aluminum battery pole ear. Background technique [0002] Elast -ears are a raw material for lithium ion polymer battery products for materials for power batteries and 3C battery conductive connections. For example, mobile phone batteries, Bluetooth batteries, laptop batteries, etc. used in life require pole ear. The battery is divided into positive and negative poles. The pole ear is the metal conductive body attracted from the positive and negative poles from the battery cell. In popular terms, the ears of the battery positive and negative are the contact points when charging and discharging. This contact point is not the copper piece of the battery we see, but a connection inside the battery. The pole ear is divided into three materials. The positive electrode of the battery uses aluminum (AL)...

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
IPC IPC(8): C22F1/04C22C21/00C22F1/02B21B1/40B21B3/00H01M50/534
CPCC22F1/04C22C21/00C22F1/02B21B1/40B21B3/00H01M50/534B21B2003/001Y02E60/10
Inventor 蒲剑丛贺耀文左宏沈国柱李心愿崔敬鑫刘延军
Owner XINJIANG JOINWORLD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap