Li-polymer Battery
| 2019-8-22 14:27:33
Li-polymer Battery
Polymer batteries are also called lithium polymer batteries (Li-polymer), also known as polymer lithium batteries. It is also a kind of lithium ion battery, but it has many obvious advantages such as high energy density, smaller size, ultra-thinness, light weight, and high safety compared with liquid lithium battery (Li-ion). New battery. In terms of shape, the lithium polymer battery has an ultra-thinning feature and can be fabricated into a battery of any shape and capacity in accordance with the needs of various products. The battery can reach a minimum thickness of 0.5mm. Its nominal voltage, like Li-ion, is also nominally 3.7V with no memory effect.The principle of a polymer battery is the same as that of liquid lithium. The main difference is that the electrolyte is different from liquid lithium. The main structure of the battery includes three elements: positive electrode, negative electrode and electrolyte. The so-called polymer lithium ion battery means that at least one or more of the three main structures use a polymer material as a main battery system. In the polymer lithium ion battery system developed, the polymer material is mainly applied to the positive electrode and the electrolyte. The positive electrode material includes a conductive high molecular polymer or an inorganic compound used in a general lithium ion battery, and the electrolyte can use a solid or colloidal polymer electrolyte or an organic electrolyte. Generally, a lithium ion technique uses a liquid or a colloidal electrolyte, so it is required The sturdy secondary package accommodates flammable active ingredients, which adds weight and limits size flexibility. The polymer lithium ion process does not have excess electrolyte, so it is more stable, and it is not easy to cause dangerous situations due to overcharging, collision or other damage of the battery, and excessive use. At the same time, the unit energy of the polymer lithium-ion battery is 50% higher than that of the general lithium-ion battery, and its capacity, charge and discharge characteristics, safety, operating temperature range, cycle life (more than 500 times) and environmental performance are all better than lithium ions. The battery has been greatly improved.
