Explanation of the difference between lithium ion battery pack and polymer lithium ion battery

The concept of lithium ion batteries includes lithium ion batteries and lithium polymer batteries. If the difference between lithium polymer batteries and lithium ion battery packs is compared in the broad and narrow sense, then the only thing is the relationship between the concept and the concept, and the lithium polymer battery is included in the lithium ion battery. Lithium-ion battery packs generally refer to aluminum shell batteries, the electrolyte is liquid, and the outer packaging material is aluminum shell. Lithium polymer battery refers to a lithium ion battery in which all solid state or gel is too electrolyte. Generally, aluminum-plastic composite film is recycled as packaging material. ① Raw material polymer lithium-ion battery refers to the use of polymer materials in at least one of the three major components of the positive electrode, negative electrode or electrolyte. Macromolecules mean large molecular weights. The corresponding concept is small molecules. Macromolecules have high strength, high toughness and high elasticity. The polymer materials currently developed for polymer batteries are mainly used for positive electrodes and electrolytes. ②Polymer lithium-ion batteries with different shapes can be thinner, arbitrarily shaped and arbitrarily shaped, because the electrolyte can be solid or colloidal rather than liquid; lithium-ion battery packs need to recycle electrolyte, which requires a robust The casing serves as a secondary package to contain the electrolyte. Therefore, this also adds a part of the weight of lithium-ion batteries. ③Safety Most of the current polymers are soft-packed lithium-ion batteries. The aluminum-plastic film is recycled as the outer shell. When the organic electrolyte is recycled inside, the liquid will not explode even if the liquid is very hot, because the aluminum-plastic film polymer battery is recycled in solid or colloidal state. There is no leakage, just a natural separation. The safety of lithium-ion battery packs comes from the invariability of the positive electrode material and the reliable safety design. Lithium iron phosphate completely solves the safety problems of lithium cobalt oxide and lithium manganate, and will not explode even in a violent collision. ④The battery cell voltage can be made into a multi-layer combination in the battery cell to reach a high voltage due to the polymer battery recycling polymer materials, and the nominal capacity of the lithium ion battery pack cell is 3.6V, if you want to reach the high voltage in actual use , You need to connect multiple batteries in series to form an aspirational high-voltage work platform. ⑤The solid electrolyte ion conductivity of the conductive polymer lithium ion battery is low. At present, it is important to add some additives to make it a gel electrolyte to improve the conductivity. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous: What is the intention of the UPS lithium-ion battery production process?