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A ternary material power lithium battery explosion-proof sheet aluminum material and its preparation method

A technology of ternary materials and lithium batteries, applied in manufacturing tools, metal rolling, heat treatment equipment, etc., can solve the problems of 1060 alloy large grains, large fluctuations in mechanical elongation, unstable blasting values, etc., and achieve grain size Uniformity, uniform structure and mechanical properties, and the effect of improving poor performance

Active Publication Date: 2022-03-15
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common materials in the market are mainly pure aluminum series in 1060-O state, which mainly has two defects: on the one hand, the degree of alloying is low, resulting in low hardness values, generally 17-19Hv, The hardness requirement for high explosion-proof pressure is 23Hv-28Hv, and the difference in hardness value is relatively large; on the other hand, 1060 alloy is prone to abnormally large grains and uneven grains during processing, and the grain size is above 80 μm, resulting in fluctuations in mechanical elongation Large, generally 15-30%, the blasting value is unstable during subsequent processing

Method used

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  • A ternary material power lithium battery explosion-proof sheet aluminum material and its preparation method
  • A ternary material power lithium battery explosion-proof sheet aluminum material and its preparation method

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Effect test

Embodiment 1

[0035] A method for preparing a ternary material power lithium battery explosion-proof sheet aluminum material, comprising the following steps:

[0036] (1) Casting billet composition control: add 0.2% iron by mass percentage, 0.04% silicon by mass percentage and 0.04% manganese by mass percentage according to the iron-silicon ratio of 5.0 and the manganese-silicon ratio of 1.0, and then add the weight The percentage is 0.015% titanium, and the balance is aluminum to obtain the chemical composition of the aluminum material of the ternary material power lithium battery explosion-proof sheet.

[0037] (2) Process treatment of casting and rolling coils: Add the chemical components in the proportion in step 1 into the melting furnace, melt at a temperature of 735°C, and process the melt through online stirring and feeding slagging agents and refining agents to obtain qualified melts. body weight, enter the degassing device to eliminate the hydrogen existing in the melt, in the cas...

Embodiment 2

[0044] A method for preparing a ternary material power lithium battery explosion-proof sheet aluminum material, comprising the following steps:

[0045] (1) Casting billet composition control: add 0.3% iron by mass percentage, 0.06% silicon by mass percentage and 0.06% manganese by mass percentage according to the iron-silicon ratio of 5.0 and the manganese-silicon ratio of 1.0, and then add the weight The percentage is 0.008% titanium, and the balance is aluminum to obtain the chemical composition of the aluminum material of the ternary material power lithium battery explosion-proof sheet.

[0046] (2) Process treatment of casting and rolling coils: Add the chemical components in the proportion in step 1 into the melting furnace, melt at a temperature of 745°C, and process the melt through online stirring and feeding slagging agents and refining agents to obtain qualified melts. In the casting and rolling area, the temperature drop from the aluminum liquid to the aluminum pla...

Embodiment 3

[0053] A method for preparing a ternary material power lithium battery explosion-proof sheet aluminum material, comprising the following steps:

[0054] (1) Casting billet composition control: add 0.25% iron by mass percentage, 0.05% silicon by mass percentage and 0.05% manganese by mass percentage according to the iron-silicon ratio of 5.0 and the manganese-silicon ratio of 1.0, and then add the weight The percentage is 0.011% titanium, and the balance is aluminum to obtain the chemical composition of the aluminum material of the ternary material power lithium battery explosion-proof sheet.

[0055] (2) Process treatment of casting and rolling coils: Add the chemical components in the proportion in step 1 into the melting furnace, melt at a temperature of 740°C, and process the melt through online stirring and feeding slagging agents and refining agents to obtain qualified melts. body weight, enter the degassing device to eliminate the hydrogen present in the melt, in the cas...

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Abstract

The invention belongs to the technical field of aluminum material processing, and discloses a ternary material power lithium battery explosion-proof disc aluminum material and a preparation method thereof. Manganese 0.04‑0.06%, titanium 0.008‑0.015%, and the balance is aluminum. The method includes the following steps: adding each weighed raw material into a smelting furnace for smelting, transferring the cast-rolled coil to the cast-rolled coil and transferring it to an annealing furnace, and performing heat treatment processing; rolling the aluminum coil into a finished product; The finished aluminum coil is subjected to surface treatment and dyne value test; after slitting, the finished product is annealed. The invention adopts the green short-process casting-rolling-cold rolling process, the prepared aluminum material has a hardness value of 23Hv-28Hv, an elongation rate of 25-30%, and an average grain size of 20-30 μm.

Description

technical field [0001] The invention belongs to the technical field of aluminum material processing, and in particular relates to a ternary material power lithium battery explosion-proof sheet aluminum material and a preparation method thereof. Background technique [0002] The ternary material power lithium battery has high energy density and better cycle performance than normal lithium cobalt oxide batteries. With the continuous improvement of formula and perfect structure, the nominal voltage of the battery has reached 3.7V, and the capacity has reached or exceeded the level of lithium cobalt oxide battery. However, ternary material power lithium batteries mainly include nickel-cobalt-aluminate lithium batteries, nickel-cobalt-aluminum lithium-manganate batteries, etc. Due to the unstable high-temperature structure of nickel-cobalt-aluminum, the high-temperature safety is poor, and the pH value is too high to make the monomer flatulence. And then lead to danger, the curr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04C21D1/26C21D8/02C21D9/52B21B1/22
CPCC22C21/00C22C1/026C22F1/04C21D1/26C21D8/0236C21D8/0226C21D8/0247C21D9/52B21B1/22B21B2001/225B21B2261/20
Inventor 徐成志万宝伟任素贞张彩龙王毓玮张逸郭琨吕彦阳
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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