The main differences between polymer batteries (soft pack batteries) and aluminum shell batteries.
packaging:
Polymer batteries (soft pack batteries) are packaged with aluminum-plastic film
This packaging material gives the battery a certain degree of flexibility in structure, and in the event of safety hazards such as internal short circuits, the battery is prone to bulging and venting, reducing the risk of explosion. Beteli polymer lithium-ion batteries use lithium cobalt oxide high rate materials, with long cycle life, low internal resistance, high rate, low self consumption, and high safety. Green and environmentally friendly, free of substances such as mercury, chromium, lead, etc., certified through testing and certification, with CE, CB, UN38.3, KC and other certification qualifications, high safety performance, reassuring use, and customer peace of mind.
Aluminum shell batteries use battery casings made of aluminum alloy materials
Aluminum shell batteries, in terms of appearance, have a hard shell and are mainly used in square lithium batteries, with the characteristics of lightweight and safer than steel shells.
Security:
In terms of safety, polymer batteries (soft pack batteries) are packaged with aluminum-plastic film. In the event of a safety accident, the battery will only burst and crack, making it less prone to explosion.
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Aluminum shell batteries, on the other hand, use fully sealed technology, which makes it difficult to discharge air pressure under the same conditions, increasing safety hazards.
Weight and energy density:
Polymer batteries (soft pack batteries) are 40% lighter in weight than steel shell lithium batteries of the same capacity and 20% lighter than aluminum shell lithium batteries, with a higher mass to energy ratio.
Although aluminum shell batteries also have the characteristic of lightweight, the overall material cost is lower than that of soft pack lithium batteries under the same capacity, and the technical requirements for battery materials are lower than those of soft pack lithium batteries.
Manufacturing process and cost:
The manufacturing automation level of polymer batteries (soft pack batteries) is lower than that of aluminum shell batteries, and aluminum-plastic film materials still need to be imported, resulting in higher costs.
The material of aluminum shell batteries has been fully localized, with a high degree of manufacturing automation, reducing the impact of human factors on product consistency and saving labor costs.
Flexibility of packaging form:
The shape of
polymer batteries (soft pack batteries) can be customized according to customer needs, and new cell models can be developed with better design flexibility. Beite Li Battery Customization: Meet the customization needs of battery integration (cell+BMS+structure) and customize your own energy solution.
Aluminum shell batteries are relatively fixed in shape, usually square or cylindrical, with a lower degree of customization.
In summary, polymer batteries and aluminum shell batteries have their own characteristics in packaging methods. Polymer batteries focus more on safety and design flexibility, while aluminum shell batteries have advantages in cost and manufacturing processes.
