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A production process of aluminum foil for power battery

A power battery and production process technology, which is applied in the production process field of aluminum foil for power batteries, can solve the problems of difficult control of front and rear tension, easy occurrence of burrs and ruffles, etc., and achieve the effects of easy operation, product quality improvement and adjustment

Active Publication Date: 2022-05-13
成都市新美加机械设备制造有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the prior art, when the aluminum foil is cut, the front and rear tension is not easy to control, so it is easy to appear burrs and ruffles

Method used

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  • A production process of aluminum foil for power battery
  • A production process of aluminum foil for power battery
  • A production process of aluminum foil for power battery

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0049] Such as Figure 1 to Figure 4 As shown, the production process of the aluminum foil for power battery according to the present invention, the aluminum foil for power battery includes: Si, Fe, Cu, Mn, Mg, Zn, Ti, AL; the content of Cu is 0.17%-0.20%, Si content is less than 0.07%;

[0050] and include the following steps:

[0051] 1) Weighing and mixing each raw material by weight percentage, first smelting to obtain a melt, and then casting and rolling the melt to form a casting billet;

[0052] 2) Carry out homogenization annealing to the cast-rolled billet formed by casting and rolling; the aluminum alloy strip is subjected to homogenization annealing at 580° C. for 4.5 hours and 550° C. for 20 hours, and the aluminum alloy strip during homogenization annealing The thickness is 3.5mm;

[0053] 3) cold-rolling the above-mentioned cast-rolled...

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Abstract

The invention discloses a production process of an aluminum foil for a power battery that can improve the tensile strength and elongation of the aluminum foil, and can avoid burrs and ruffles on the aluminum foil. The production process of the aluminum foil for the power battery includes the steps: 1) Weighing and mixing each raw material according to the weight percentage, first smelting to obtain a melt, and then casting and rolling the melt to form a casting billet; 2) casting and rolling the formed casting Carrying out homogenization annealing on the rolled billet; 3) cold rolling the above casting and rolling billet to obtain a cold-rolled billet; 4) performing intermediate annealing on the cold-rolled billet; 5) rolling the annealed aluminum alloy strip into a finished product thickness; 6 ) cutting the aluminum foil obtained in step 5). By adopting the production process of the aluminum foil for power batteries, the tensile strength can reach 285Mpa; the elongation rate is greater than 2.0%; and the quality of the finished aluminum foil can be improved.

Description

technical field [0001] The invention relates to the production of aluminum foil for batteries, in particular to a production process of aluminum foil for power batteries. Background technique [0002] We all know: With the development of electric vehicles, batteries are the most important components of electric vehicles, and the demand for aluminum foil in batteries has exploded. The foil acts as the negative electrode and the carrier to meet the needs of the entire battery. [0003] Most of the aluminum foil used by battery manufacturers requires a tensile strength of 200-250Mpa and an elongation of 2.5-3.5% when the thickness is 0.012 mm. The performance requirements put forward the tensile strength 270-300Mpa, and the elongation is greater than 2.0%. [0004] In the prior art, a kind of aluminum foil for power battery disclosed in Chinese patent ZL202011601832.0 and its preparation [0005] process, the weight percent of each raw material in the aluminum foil is as fol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B3/00B21B15/00C22C21/00C22C1/02C22F1/04C21D1/26C21D8/02
CPCC22C21/00C22C1/026C22F1/04C21D1/26C21D8/0236C21D8/0268H01M50/119B21B3/00B21B15/0007C21D2261/00B21B2003/001Y02E60/10
Inventor 邓强
Owner 成都市新美加机械设备制造有限公司
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