Analyze the reasons why the price of polymer lithium batteries is higher than that of ordinary lithium batteries

Why are polymer lithium batteries more expensive than traditional lithium batteries? Polymer lithium batteries refer to the use of aluminum-plastic packaging film as the outer packaging of lithium batteries, also known as soft pack batteries. The low-end cottage factory is 4RMB/Ah, the middle-end is 5-7rmb/Ah, and the middle-end is more than 7RMB/Ah. Like ATL and Lishen, they can generally sell for about 10 yuan. Why polymer lithium batteries are more expensive than traditional lithium batteries 1. The fundamental difference is that raw materials are the general source of their various performances. A lithium polymer battery refers to the use of at least one of the three components of a polymer material as a positive electrode, a negative electrode or an electrolyte. The macromolecule refers to the mass of the macromolecule, and the corresponding concept is the small molecule. The macromolecule has high strength, high toughness and high elasticity. Currently, polymer battery materials are mainly used for positive electrodes and electrolytes. 2. Forming the difference. Lithium polymer batteries can be thin, flat and shapeless, because the electrolyte can be solid or gel instead of liquid, and lithium batteries use electrolytes, which requires a sturdy casing to carry out the two. Times package. Therefore, lithium batteries have added some weight. 3. Safety At present, most polymers are soft-packed lithium batteries, and the outer shell is aluminum-plastic film. When an organic electrolyte is used inside, even if the liquid is hot, it will not explode, because the aluminum-plastic film polymer battery uses a solid or gel state without leakage, only natural rupture. However, few are absolute. If the instantaneous current is large enough to cause a short circuit, it is not impossible for the battery to spontaneously ignite or burst. Most of the mobile phone and tablet computer security accidents are caused by this situation. 4. Battery voltage Since the polymer lithium battery uses polymer materials, it can be made into a multi-layer combination in the battery to achieve high voltage. The nominal capacity of the lithium battery is 3.6v. In order to achieve high voltage in practical applications, multiple batteries must be connected in series to form an ideal high voltage working platform. If the above characteristics are used to compare polymer batteries and lithium batteries, the conclusion is affirmative. However, lithium batteries still dominate the market, which shows that lithium batteries also have comparative advantages. Let's continue the comparison. 5. The solid electrolyte ion conductivity of the conductive polymer lithium battery is low. At present, in order to improve the conductivity of the gel electrolyte, some additives have been added to the gel electrolyte. This will only increase the conductivity of the ions. Unlike lithium batteries, the conductivity maintains a stable value and does not depend on the quality of the auxiliary materials. 6. The thinner the polymer lithium battery during processing, the better the processing, and the thicker the lithium battery, the better the processing, which makes polymer lithium batteries more applications. Compared with lithium batteries, lithium polymer batteries have the following characteristics. Relatively speaking, the problem of battery leakage has been improved, but it has not been completely improved. Thin battery: 3.6V250mAh capacity, thickness can be as thin as 0.5mm. The battery can be designed in a variety of shapes. Can be made into a single high voltage: liquid electrolyte batteries can only be connected in series to obtain high voltage, while polymer batteries can be made into a single multilayer combination to achieve high voltage because they have no liquid. In theory, the discharge of a lithium battery is 10% higher than that of a lithium battery of the same size. 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. Previous: 9 maintenance tips to extend the battery life of mobile phones