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Outer packing material for high-punching-depth battery device

A battery device and outer packaging technology, which is applied to electronic equipment, rolling mill control devices, battery pack components, etc., can solve the problems of small elongation at break and inability to obtain formability, and achieve the effect of excellent formability.

Pending Publication Date: 2022-01-14
JIANGXI RUIERGY NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Although the tensile strength and yield strength can generally be increased by reducing the grain diameter, it tends to reduce the elongation at break, which has a great influence on the drawing performance of the aluminum foil.
Therefore, the aforementioned method cannot obtain sufficient moldability

Method used

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  • Outer packing material for high-punching-depth battery device

Examples

Experimental program
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Effect test

preparation example Construction

[0166] In the second embodiment of the present invention, the composite preparation method of the outer packaging material for high-drawing battery devices includes: deoiling treatment, corrosion resistance treatment, outer layer adhesive treatment, and inner thermal welding layer composite treatment.

[0167] 1. Deoiling treatment: deoiling with annealing treatment above 150°C, plasma, corona method or lye; wherein, the method of alkali deoiling is to immerse the metal in lye at 50-65°C, after a certain After the treatment of time, wash 2 times with deionized water, then dry, the surface wettability of the metal intermetallic layer 5 obtained deoiling treatment is 65mN / m, preferably more than 70mN / m, or the titrated contact angle angle of distilled water 15 degrees or less, preferably 10 degrees or less. If the wettability or surface water contact angle of the intermediate metal layer 5 exceeds a given range, it indicates that the rolling oil in the manufacturing stage may st...

Embodiment 1

[0235] The aluminum alloy foil described in Table 5 was used to form a composite film. The Si content in the aluminum alloy foil was 0.04 wt%, the Cu content was 0.005 wt%, the Zn content was 0.008 wt%, and the Ti content was 0.015 wt%. The total of Cube orientation, Cu orientation, S orientation, Bs orientation, and R orientation ratio is 72 wt%, the total of Cube orientation and Cu orientation ratio is 32%, and the Cube orientation ratio is 10%. The average crystal particle size is 9.1 μm.

[0236] After the aluminum alloy foil is annealed and degreased, the surface contact angle is 15°, the thickness is 40μm, and the two sides are chemically treated in advance to form a corrosion-resistant layer.

[0237] The outer layer lamination method is as follows: Corona treatment is performed on the surface of the outer base material resin layer and the outer layer adhesive layer in contact. The aluminum alloy foil layer is laminated on the resin layer of the outer base material by ...

Embodiment 2

[0242] The aluminum alloy foil described in Table 5 was used to form a composite film. The Si content in the aluminum alloy foil was 0.016 wt%, the Cu content was 0.013 wt%, the Zn content was 0.004 wt%, and the Ti content was 0.004 wt%. The total ratio of Cube orientation, Cu orientation, S orientation, Bs orientation, and R orientation is 77 wt%, the total ratio of Cube orientation and Cu orientation is 47%, and the ratio of Cube orientation is 14%. The average particle size of crystals is 6μm.

[0243] After the aluminum alloy foil is annealed and degreased, the surface contact angle is 15°, the thickness is 40μm, and the two sides are chemically treated in advance to form a corrosion-resistant layer.

[0244] The outer layer lamination method is the same as in Example 1.

[0245] The inner layer stacking method is the same as that in Example 1.

[0246] Simultaneously, Slip coating was performed on the surface of the substrate layer. Slip coating is to apply a 10% eruca...

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Abstract

The invention discloses an outer packaging material for a high-punching-depth battery device. The outer packaging material at least comprises an outer base material resin layer, an intermediate metal layer and an inner hot melting resin layer; the intermediate metal layer comprises an aluminum alloy foil containing aluminum (Al), iron (Fe), silicon (Si), copper (Cu), zinc (Zn), and titanium (Ti), wherein in the aluminum alloy foil, when an aggregate crystal having crystal orientation anisotropy is observed by using EBSD (electron beam back scattering analysis), the orientation distribution of the surface of the aluminum alloy foil is detected, the total ratio of the Cube orientation, the Cu orientation, the s orientation, the Bs orientation, and the R orientation is 70% or more with respect to the total of the detected ratio having anisotropy and the detected ratio having no anisotropy; the total ratio of the Cube orientation and the Cu orientation is 30% or more; the ratio of the Cube orientation is 10% or more; and the average size of the crystal grain size is 10.0 [mu]m or less, the content of the alloy component silicon (Si) is 0.05 wt% or less, the content of the copper (Cu) is 0.004 wt% or more, the content of the zinc (Zn) is 0.01 wt% or less, and the content of the titanium (Ti) is 0.02 wt% or less.

Description

technical field [0001] The invention relates to an aluminum-plastic packaging film, in particular to an aluminum-plastic composite film for lithium battery packaging. Background technique [0002] At present, lithium-ion batteries are mainly divided into three categories: square, cylindrical, and soft packs. The square and cylindrical shells are mainly made of hard shells such as aluminum alloy and stainless steel. The aluminum alloy shell can be pure aluminum, while the shell of the soft pack is made of aluminum plastic. Manufactured by composite film, which greatly improves the problem of inflexible shape design of hard-packed batteries. [0003] Aluminum-plastic composite film is the decisive material for pouch batteries, and it still maintains high resistance in the environment of liquid chemicals such as strong acids or organic solvents. Because aluminum-plastic film has the advantages of light weight, thin thickness, and high energy density, it is widely used in 3C an...

Claims

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Application Information

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IPC IPC(8): B32B15/20
CPCB32B15/20B32B15/18B32B15/08B32B27/00B32B15/09B32B15/088B32B15/085B32B27/08B32B27/36B32B27/34B32B27/32B32B7/12B32B33/00H01M50/119H01M50/121H01M50/126H01M50/105C22C21/00C22C21/02C22F1/04C22F1/043C21D1/26B21B37/74B21B37/16B21B1/40C21D2201/05B32B2457/10B32B2307/714B32B2255/06B32B2255/26Y02E60/10
Inventor 庄志王卉刘倩倩蔡裕宏程跃
Owner JIANGXI RUIERGY NEW MATERIAL TECH CO LTD
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