What are the differences between lithium battery pack and polymer lithium battery?

What are the differences between lithium battery packs and polymer lithium batteries? What are the differences between lithium battery packs and polymer lithium batteries? If you want to find out the differences and advantages of lithium battery packs and polymer lithium batteries, first of all Know the essential difference in meaning. What is a lithium battery pack? A lithium battery pack is composed of a single lithium battery with a certain voltage and capacity connected in series and parallel, and is equipped with a set of lithium batteries with a safe charge and discharge protection board. What is a polymer lithium battery? According to the electrolyte material used in lithium batteries, lithium batteries are divided into liquid lithium batteries and polymer lithium batteries or plastic lithium batteries. The positive electrode material used in polymer lithium batteries is the same as the negative electrode material used in liquid lithium batteries. The positive electrode materials are divided into lithium cobalt oxide, lithium manganese acid, ternary materials and lithium iron phosphate materials. The working principle of negative electrode graphite and battery basically the same. The characteristics of lithium battery pack life: 1C charge and discharge at room temperature, the monomer capacity is still greater than 80% after 2000 cycles, and the 3C cycle life reaches more than 800 times. Composition: According to customer requirements, single lithium batteries can be used in combination, which has a higher capacity than single lithium batteries. Discharge rate: At 5C discharge rate, the discharge rate can reach 90%. Charge and discharge: high current 2C, fast charge and discharge. Charging in a dedicated charger 1.5c, the battery can be fully charged in 40 minutes, and the starting current can reach 2C. Polymer lithium battery characteristic composition structure: Polymer lithium battery adopts aluminum-plastic soft packaging in structure, which is different from liquid battery with metal shell. Once it is attacked by potential safety hazards, the liquid battery will explode briefly, while the polymer battery will only swell. Volume thickness: extremely thin, the battery can be assembled into a credit card. Ordinary liquid lithium batteries adopt the method of customizing the shell first, and then sealing the positive and negative materials. The thickness of the shell is below 3.6mm, which is a technical bottleneck. Polymer batteries do not have this problem, and the thickness can be less than 1mm. Battery weight: The battery and polymer electrolyte do not need to be protected by a metal casing. The weight of polymer batteries is 40% lighter than standard steel-packed lithium batteries and 20% lighter than aluminum-packed lithium batteries. Battery resistance: The resistance of polymer batteries is less than that of liquid batteries. Now the internal resistance of domestic polymer batteries can even be less than 35m, which greatly reduces the power consumption of the battery. Adjustable model: polymer batteries can be added or reduced according to customer needs. Summary: The biggest difference between lithium battery pack and polymer lithium battery lies in the application volume and application direction. The polymer lithium battery is thin and small, and is mainly used for the daily storage needs of small-sized electrical appliances such as mobile phones. Lithium battery packs are large in size and are mainly used in communication base stations and weak electrical room sub-systems, such as UPS uninterruptible power supplies. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.