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Characteristics of Polymer Lithium-Ion Batteries
2023-12-04
1. Good safety performance. The structure of polymer lithium-ion batteries uses aluminum-plastic soft packaging, which is different from the metal casing of liquid batteries. Once a safety hazard occurs, lithium-ion batteries are easy to explode, while polymer batteries will only inflate or, at best, be burned.
2. Small thickness can make it thinner, ultra-thin, the thickness can be less than 1mm, and can be assembled into a credit card. There is a technical bottleneck in the thickness of ordinary liquid lithium-ion batteries below 3.6mm, and the 18650 battery has a standardized volume.
3. Light weight and large capacity. Batteries using polymer electrolytes do not need metal cases as protective outer packaging. Therefore, when the capacity is the same, they are 40% lighter than steel-case lithium batteries and 20% lighter than aluminum-case batteries. When the volume is generally large, the capacity of polymer batteries is larger, about 30% higher.
4. The shape can be customized. The thickness of the polymer battery can be increased or reduced according to actual needs. For example, a new notebook of a famous brand uses trapezoidal polymer batteries to make full use of the internal space.
