The reason why the lithium ion battery is greatly improved.

What is the cause of the lithium-ion battery significantly increased? In addition to the improvement of positive and negative material, performance improvement, performance improvement, and battery process, should also include the following contributions: 1 diaphragm is thin. The lithium-ion battery is made of polypropylene (PP), polyethylene (PE) or PP / PE / PP composite film is diaphragm. In order to adapt to battery high performance development requirements, in recent years, the thickness of the diaphragm gradually gradually develops. The universal diaphragm thickness has been reduced from the past 22 to 25 anal M to 16TAM, and some manufacturers have even started using a 9_um thick film. Since the diaphragm is thinned for the active electrode, the battery capacity is increased by more than 3%. 2 Type of fluid. Due to the advancement of electrode manufacturing techniques and battery assembly techniques, the electrode concentration fluid is thinly possible. The thickness of the positive electrode aggregate Al foil and the negative electrode fluid Cu foil is reduced from the original 20TZm to 10PTM, and the battery has obtained at least 6% capacity lifting space. 3 electrolytic solution additives. The Vc class (vinylene carbonate) electrolyte additive can improve the properties of the carbon negative surface SEI film, significantly improved battery-based productivity and cycle stability, and is now widely used in lithium ion batteries. Since lithium participating in the electrode reaction is from the positive electrode material, the improvement of cycle efficiency means that the quality of the positive electrode active material that matches a certain amount of negative electrode can be reduced, so it is advantageous to improve the battery capacity and the ratio energy. 4 housing lightweight. The maximum difference between the lithium ion battery and the nickel-hydrogen and other secondary battery systems is that the internal pressure of the battery is very low in the normal charge and discharge state. Therefore, light material A1 and aluminum composite film having not high mechanical strength can be used as the battery housing material to increase the quality efficiency of the battery, thereby increasing the battery ratio energy. For example, for a small-sized lithium ion battery having a capacity of 1AH, its steel case, aluminum shell, and soft packaging battery are 120Wh ¡¤ kg-1, 145WH ¡¤ kg and 200Wh ¡¤ kg, respectively, respectively, respectively. . It can be seen that the increase in lithium ion battery quality in recent years is mainly obtained by using a lightweight housing to improve the quality efficiency of the battery. The increase in volume ratio should be mainly due to the increase in the increase in the filling density of the electrode active material and the internal space of the battery and the utilization ra Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery LiFePO4 Battery 48V 150AH LiFePO4 Battery 48V 100AH