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Aluminum alloy for battery case of new energy automobile and pressure casting preparation method thereof

A new energy vehicle and battery casing technology, applied in the field of metal materials for new energy vehicle products, can solve the problems of complex structure, thin product wall thickness, large battery tray product size, etc., and achieve the effect of excellent comprehensive performance and good casting performance

Inactive Publication Date: 2020-01-03
安徽镁美科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery tray has the characteristics of super large product size, complex structure, and thin wall thickness.
This requires the die-casting aluminum alloy material to have good casting performance (fluidity), good mechanical properties and other comprehensive properties, but the current common die-casting aluminum alloy materials such as ADC12 can no longer meet the requirements

Method used

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  • Aluminum alloy for battery case of new energy automobile and pressure casting preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides an aluminum alloy used in a new energy vehicle battery case and a method for preparing it by die casting. The percentage content of each element of the aluminum alloy is shown in Table 1;

[0041] In this embodiment, a method for preparing a die-casting aluminum alloy for a battery case of a new energy vehicle comprises the following steps:

[0042] 1) Preheat various intermediate alloy raw materials and operating tools such as pure aluminum, crystalline silicon, aluminum manganese, aluminum titanium boron, aluminum strontium, aluminum rare earth, pure magnesium to 200°C in proportion for 1~2h;

[0043] 2) Add the raw materials of pure aluminum, crystalline silicon, and aluminum-manganese intermediate alloy after preheating in step 1) into the side furnace according to a reasonable feeding sequence, and the temperature is 740~800°C until fully melted;

[0044] 3) Fully stir the melt obtained in step 2), and add slag remover and refining agent in s...

Embodiment 2

[0051] This embodiment provides an aluminum alloy used in a new energy vehicle battery case and a method for preparing it by die casting. The percentage content of each element of the aluminum alloy is shown in Table 1;

[0052] In this embodiment, a method for preparing a die-casting aluminum alloy for a battery case of a new energy vehicle comprises the following steps:

[0053] 1) On the basis of Example 1, according to the percentage content of the corresponding elements in Example 2, the ingredients are proportioned, and crystalline silicon, aluminum-manganese master alloy, aluminum strontium, aluminum-titanium-boron, and pure magnesium need to be added for load-bearing.

[0054] 2) Follow steps 1-6 in Example 1 to obtain the melt that meets the requirements of Example 2 with the above-mentioned raw materials that need to be added, and wait for pouring.

[0055] The die casting described in this embodiment uses the company's 5000T die casting machine, the pouring temperat...

Embodiment 3

[0058] This embodiment provides an aluminum alloy used in a new energy vehicle battery case and a method for preparing it by die casting. The percentage content of each element of the aluminum alloy is shown in Table 1;

[0059] In this embodiment, a method for preparing a die-casting aluminum alloy for a battery case of a new energy vehicle comprises the following steps:

[0060] 1) On the basis of Example 2, according to the percentage content of the corresponding elements in Example 3, the ingredients are proportioned, and the load-bearing needs to add crystalline silicon, aluminum-manganese intermediate alloy, aluminum strontium, aluminum-titanium-boron, pure magnesium, aluminum rare earth intermediate alloy.

[0061] 2) Follow steps 1-6 in Example 1 for the above-mentioned raw materials to be added to obtain a melt that meets the requirements of Example 3, and wait for pouring.

[0062] The die casting described in this embodiment uses the company's 5000T die casting mac...

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Abstract

The invention discloses an aluminum alloy for a battery case of a new energy automobile and a pressure casting preparation method thereof. The aluminum alloy comprises the following elements in percentage by mass: 9.5-13.5% of Si, 0.03-0.15% of Fe, 0.22-0.50% of Mg, 0.45-0.80% of Mn, 0.05-0.15% of Ti, 0.01-0.03% of B, 0.012-0.05% of Sr, 0.05-0.2% of RE, less than or equal to 0.03% of a single impurity element, less than or equal to 0.2% of the sum of the impurity elements, and the balance Al. According to the aluminum alloy and the preparation method thereof, the raw materials used for a common aluminum alloy are organically combined, then the multielement mixed rare earth elements are scientifically and reasonably added, various effects of microalloying the multielement mixed rare earth elements are fully exerted, and therefore the comprehensive performance of the material is improved, so that the light weight requirement is met, and then the product material quality is improved.

Description

technical field [0001] The invention relates to the field of metal materials for new energy automobile products, and more specifically relates to an aluminum alloy used for a battery casing of a new energy automobile and a pressure casting preparation method thereof. Background technique [0002] Aluminum alloy is an alloy composed of aluminum as the base and other elements. It is the most commonly used material in structural engineering. It has the characteristics of small specific gravity, good thermal conductivity, good electrical conductivity, environmental protection, and recyclable recycling. It is widely used in 3C, Various fields such as automobile transportation, home furnishing, aerospace, chemical industry and rocket. [0003] The battery tray is a key component of the automotive power battery, and the new energy vehicle power battery, due to its own weight defect and energy density conflicts, in the vehicle component subsystem, the demand for lightweight is parti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04C22C1/03C22C1/06B22D17/00
CPCB22D17/00C22C1/026C22C1/03C22C1/06C22C21/04
Inventor 刘金平戴林
Owner 安徽镁美科技有限公司
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