Aluminum heat transfer materials, open a new space for new energy vehicles!
West Aluminum - West Aluminum Industry Telecom: Recently, AVIC securities released a research report saying that from the perspective of new energy, the aluminum heat transfer material industry is expected to usher in a simultaneous increase in volume and profit. What is aluminum heat transfer material? What is the development prospect?
What is aluminum heat transfer material?
Aluminum heat transfer composite is a new type of aluminum alloy material based on aluminum manganese 3-Series alloy, namely core material, which forms metallurgical bonding between core material and one or more aluminum alloys with different physical and chemical properties on the contact surface by rolling composite process.
Compared with a single metal, the combination of different metals can make its physical and chemical properties more superior, and its thermal expansion, thermal conductivity, strength, corrosion resistance and conductivity can be greatly improved.
It is generally composed of core material and composite layer: the core material is composed of aluminum manganese 3-Series aluminum alloy, which plays the role of strength support and heat dissipation; The composite layer is composed of aluminum silicon 4 series alloy or other brands of aluminum alloy, which plays the role of brazing or improving the overall material performance. Aluminum heat transfer non composite materials are mainly aluminum alloy materials made of a single aluminum alloy through rolling process. This material is generally used together with aluminum heat transfer composites to manufacture various brazed heat exchangers and auto parts.
Application of aluminum heat transfer materials
Aluminum heat transfer materials are widely used in air conditioning, automotive thermal machinery, lithium battery cooling systems and other fields.
Among them, automobile heat exchanger is the main application field, mainly including automobile air conditioner, water tank, oil cooler, intercooler and heater. It is reported that a car usually has more than 10 heat exchange units.
Aluminum heat transfer materials for automobiles have a promising future
With the rapid development of the new energy automobile industry, China's automotive heat transfer aluminum alloy composite belt (foil) has also achieved rapid development. The increase in the penetration rate of new energy vehicles and the upgrading of automobile "Aluminization" are the two major growth drivers of the aluminum heat transfer material market.
1. New energy vehicles bring incremental market
A major application field of aluminum heat transfer materials is the transportation industry. Taking Huafeng aluminum as an example, transportation accounted for 87% of its downstream demand structure in 2019.
In terms of effectiveness, the heat exchanger made of aluminum heat transfer composite material can reduce the weight of automobile heat exchange system by about 40%, and greatly improve the heat exchange efficiency.
Compared with traditional oil vehicles, the consumption of aluminum heat transfer materials in the heat exchange system of new energy vehicles has almost doubled. With the demand of new energy batteries and heat dissipation of electronic control systems, the demand for aluminum heat transfer materials will increase significantly.
According to the 2016-2030 aluminum demand assessment report of China's automotive industry released by CM company and the investor survey summary in September 2021 disclosed by the company, the aluminum used for heat exchange of traditional fuel vehicles (ice) is about 10kg, and that of pure electric vehicles (Bev) is about 20kg.
Finally, according to Shenwan's calculation, the aluminum demand for automotive heat exchange system: it is estimated that the aluminum consumption of automotive heat exchange system in China and the world will be 171000 tons and 1421000 tons respectively in 2023, and the compound growth rate from 2020 to 2023 will be 17.2% and 9.9% respectively.
2. Increasing importance of liquid cooling system
The battery generates a lot of heat in the process of charging and discharging, and the excessive temperature will reduce the battery life and have the risk of thermal runaway. Battery cooling technology is mainly divided into air cooling, liquid cooling and phase change cooling. Liquid cooling accounted for about 55% of electric vehicles in 2022; The application of energy storage is accelerating. According to GGII, the proportion of energy storage liquid cooling will increase from 10.8% in 2021 to about 45% in 2025. From the perspective of terminal application, the liquid cooling heat dissipation design of Tesla V3 supercharger charging equipment is 72.4% higher than the second generation peak power; BYD has built a technology platform for modular liquid cooled battery energy storage system; Ningde times ctp3.0 battery adds water to the cold plate between the two cells.
3. The demand for power and energy storage is growing rapidly
Assuming that the penetration rate of new energy vehicles in China / around the world is 33%/21% in 2025, and the single vehicle consumption of aluminum heat transfer materials is 22.5kg, including 12.5kg of battery part, the demand for aluminum heat transfer materials driven by electric vehicle battery cooling plate in 2025 is about 260000 tons, and the CAGR in 2020-25 is about 46%. In addition, the increase in the permeability of energy storage liquid cooling brings about incremental demand. GGII predicts that the installed capacity of domestic electrochemical energy storage is expected to exceed 50gwh in 2025 and 4.4gwh by the end of 2020.
(Chongqing Xialu Xinda Aluminum Industry Co., Ltd. Publicity Department collates contributions)
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