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Why do lithium batteries use aluminum shells?

When designing a battery casing, choosing aluminum instead of other materials is mainly based on the following key considerations:

1. Excellent conductivity

The conductivity of lithium batteries is one of the key factors in their performance, and aluminum shells, as a metal material, have excellent conductivity, which allows current to be transmitted quickly, thereby increasing the output power of lithium batteries.

2. Good thermal conductivity

Lithium batteries generate a lot of heat during operation, and if the heat dissipation is poor, it may cause the battery to overheat. The thermal conductivity of aluminum materials is higher than that of steel, and it can dissipate heat quickly, thereby effectively protecting lithium batteries.

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3. Light weight

Compared with traditional steel shells, aluminum shells have a smaller density and lighter weight. The use of aluminum shells can effectively reduce the overall weight of the battery, thereby increasing the energy density and working efficiency of the battery. This is especially important for new energy vehicles and portable electronic devices, which require lighter weight to extend the range or improve portability.

4. Excellent corrosion resistance

Aluminum shells have good corrosion resistance and can maintain stability for a long time in complex working environments. This is of great significance for extending the service life of the battery and improving the safety of the battery.

5. Cost-effectiveness

Although the initial cost of aluminum shells may be higher than that of some other materials, its comprehensive performance advantages make it more cost-effective in practical applications.

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6. Easy to process

Aluminum shells have good plasticity and weldability and are easy to process into various shapes and sizes to meet the needs of different battery designs.

Bosa Energy

Bosa Energy with 150GWH capacity and over 400,000 electric bus/utility vehicle application experience we are listing first 5 in China power battery industry. We cooperate with Yutong/Geely/Damiler etc.

We are also offering Container ESS systems and delivered 5GWh ESS in 2023. In local market, we are offering OEM service for Changan, CALB, National grid, Ping Gao Electric , Xuji electronics, Ruineng electronics, they are our main Container ESS suppliers in China Market.

We are the most professional supplier of marine lithium batteries in China, and our export volume of marine batteries consistently ranks among the top three in China; We are also the top 1 exporter of lithium battery modules in China, specializing in providing various lithium battery module solutions.

For excellent quality and performance our products are popular in more than 30 countries in the world. We also have established warehouse in Germany and Netherlands to provide safety stock timely delivery for our customers.

l Customized and Flexible

l High Delivery capacity

l Wide Applications

l Rich experience on Lithium battery pack

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