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Composite aluminum alloy plate for liquid cooling plate of new energy power battery and preparation method of composite aluminum alloy plate

A technology of aluminum alloy plates and power batteries, which is applied in the field of aluminum alloy composite materials, to achieve the effects of increasing cruising range, reducing carbon emissions, and reducing battery weight

Active Publication Date: 2022-07-15
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the post-weld yield strength of the commonly used 3-series aluminum alloys is generally less than 100MPa, which usually can only meet the load-bearing requirement of 150kg.

Method used

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  • Composite aluminum alloy plate for liquid cooling plate of new energy power battery and preparation method of composite aluminum alloy plate
  • Composite aluminum alloy plate for liquid cooling plate of new energy power battery and preparation method of composite aluminum alloy plate
  • Composite aluminum alloy plate for liquid cooling plate of new energy power battery and preparation method of composite aluminum alloy plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation of the composite aluminum alloy plate for the liquid cooling plate of the new energy power battery of the present application:

[0047] Core material composition and mass percentage: Si 0.9%, Fe 0.36%, Cu 0.35%, Mn 0.34%, Mg 0.7%, Ti 0.08%, Cr 0.1%, other elements individual content <0.05%, total <0.15%, The balance is aluminum;

[0048] The protective layer is 3003 alloy.

[0049] (1) The core material ingot is not uniform, and the protective layers on the upper and lower sides are subjected to composite hot rolling at a ratio of 5%, the rolling temperature is 500 ° C, and the thickness of the hot rolled coil is 8 mm;

[0050] (2) The hot-rolled coil is cold-rolled into a 3mm cold-rolled coil by 2 passes;

[0051] (3) Finished annealing of the cold-rolled coil is carried out at a temperature of 380°C and a holding time of 2h;

[0052] (4) The cold-rolled coil after annealing is subjected to a brazing process, and the temperature is raised from room t...

Embodiment 2

[0056] The preparation of the composite aluminum alloy plate for the liquid cooling plate of the new energy power battery of the present application:

[0057] Core material composition and mass percentage: Si 1.0%, Fe 0.4%, Cu 0.2%, Mn 0.4%, Mg 0.8%, Ti 0.05%, Cr 0.15%, other elements individual content < 0.05%, total < 0.15%, The balance is aluminum;

[0058] The protective layer is 3003 alloy.

[0059] (1) The core material ingot is not uniform, and the protective layers 3003 on the upper and lower sides are subjected to composite hot rolling at a ratio of 6%, the rolling temperature is 490 ° C, and the hot rolling thickness is 7 mm;

[0060] (2) The hot-rolled coil is cold-rolled into a 2.5mm cold-rolled coil by 2 passes;

[0061] (3) The finished annealing temperature of the cold rolled coil is 370℃, and the holding time is 2.5h;

[0062] (4) The cold-rolled coil after annealing is subjected to a brazing process, and the temperature is raised from room temperature to 60...

Embodiment 3

[0066] The preparation of the composite aluminum alloy plate for the liquid cooling plate of the new energy power battery of the present application:

[0067] Core material composition and mass percentage: Si 0.7%, Fe 0.2%, Cu 0.4%, Mn 0.3%, Mg 0.6%, Ti 0.1%, Cr 0.05%, other elements individual content <0.05%, total <0.15%, The balance is aluminum;

[0068] The protective layer is 3003 alloy.

[0069] (1) The core material ingot is not uniform, and the protective layers 3003 on the upper and lower sides are subjected to composite hot rolling at a ratio of 7%, the rolling temperature is 480 ° C, and the hot rolling thickness is 6.5 mm;

[0070] (2) The hot-rolled coil is cold-rolled into a 2mm cold-rolled coil by 3 passes;

[0071] (3) The finished annealing temperature of the cold rolled coil is 360℃, and the holding time is 3h;

[0072] (4) The cold-rolled coil after annealing is subjected to a brazing process, and the temperature is raised from room temperature to 605 ° C...

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Abstract

The invention discloses a composite aluminum alloy plate for a liquid cooling plate of a new energy power battery and a preparation method of the composite aluminum alloy plate. The composite aluminum alloy plate comprises a core material layer and a protective layer, wherein the core material layer contains a Cr (chromium) element, precipitation of an Mg2Si phase at a grain boundary can be inhibited, the strength after artificial aging is improved, meanwhile, grains can be refined, the recrystallized grains are in a slender shape, and the corrosion resistance can be improved; the protective layer is made of Al-Mn alloy or 1-series alloy, in the brazing process, the protective layer can prevent the Mg element of the core material layer from diffusing to the surface, and the situation that the welding effect is affected by the poisoning effect of Mg is avoided.

Description

technical field [0001] The application relates to the technical field of aluminum alloy composite materials, in particular to a composite aluminum alloy plate for a liquid cooling plate of a new energy power battery and a preparation method thereof. Background technique [0002] With the rapid development of electric vehicles, the power battery will also develop rapidly as the core component of the power system of new energy vehicles. As the liquid cooling plate of the battery cooling module, its demand will also increase. [0003] A cooling method of the power battery is indirect cooling. The cooling liquid circulating in the liquid cooling plate channel reduces the working temperature of the battery pack by means of convection heat transfer and cooling, and plays a cooling role. One of the design methods is that the liquid-cooling plate not only plays a cooling role, but also acts as a support plate to support the weight of the battery pack, and does not require an additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C21/00C22F1/043C22F1/04
CPCC22C21/08C22C21/00C22F1/043C22F1/04Y02E60/10
Inventor 曹琦郑珊华悦倩孙磊赵娜周德敬
Owner YINBANG CLAD MATERIAL
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