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Structural characteristics of soft pack lithium-ion batteries

The key materials used in soft pack lithium-ion batteries include positive electrode materials, negative electrode materials, and separators, which are not significantly different from traditional steel and aluminum shell lithium-ion batteries. The biggest difference lies in the soft packaging materials, which are the most critical and technically challenging materials in soft pack lithium-ion batteries. The packaging materials and structure of the flexible lithium-ion battery make it have a series of advantages. The official account of the Electric Knowledger summarizes that, for example, the safety performance is good, and the flexible battery is packaged with aluminum plastic film on the structure. In case of safety problems, the flexible battery will generally blow and crack instead of exploding like the steel shell or aluminum shell cell.

Lightweight, soft pack lithium-ion batteries are 40% lighter than steel shell lithium-ion batteries of the same capacity and 20% lighter than aluminum shell lithium-ion batteries; Low internal resistance, the internal resistance of soft pack batteries is smaller than that of lithium-ion batteries, which can greatly reduce the battery's self consumption;

Good cycling performance, the cycle life of the soft pack battery is longer, and the attenuation after 100 cycles is 4% to 7% less than that of the aluminum shell; Flexible design, variable shape, and can be thinner. New battery cell models can be customized according to customer needs.

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