What can improve the energy density of lithium battery systems

1. The enhanced lithium battery cell material uses different organic chemical management systems, so you can change the specific energy. For example, in the cathode material of a lithium battery, the occupancy rate of nickel, cobalt, and manganese is adjusted to increase the occupancy rate of nickel, thereby increasing the specific energy of the lithium battery. In the cathode material of the lithium battery, the volume of the silicon/carbon polymer material can reach 4200mah/g, while the basic theoretical capacity of the lithium battery is only 372mah/g. In addition, many lithium batteries have volume damage during the entire process of a battery charge, and some lithium batteries are damaged during the entire cycle system. Therefore, the filling technology of lithium elements in lithium batteries or lithium battery electrolytes is also new. The important research content of the battery. 2. Optimize the arrangement structure. At present, most battery packs are constructed by fixing various fixing cards and supporting elements in the battery pack. Many structural elements have a large amount of volume and mass, which greatly reduces the high efficiency of the overall integration. , The layout structure of the battery pack is adjusted, and the structure of various installation support points is simplified, which enables the lithium battery pack to have a higher volume in a relatively limited room space. This year's ctp (celltopack) plan has changed the structure of the lithium-ion touch battery pack in the past. A standardized battery pack is formed by several large-space lithium battery packs, which are then intelligently stacked into a larger battery control module. These procedures not only reduce the total number of components, but also greatly improve the space utilization and specific energy. Therefore, simplifying the structure of rechargeable battery packs and forming a secondary integration method for lithium battery packs has become the technical direction chosen by many companies. 3. Changing the specifications of rechargeable batteries Changing the specifications of rechargeable batteries is also an important aspect of expansion. For example, by changing the length and total width of the rechargeable battery, the lithium battery becomes flatter and narrower within a certain volume, which is beneficial to the overall arrangement of the lithium battery in the battery pack and can improve the space utilization of the power lithium battery. There is a battery pack with more energy than that. This kind of graphic design method can also make the lithium ion core have a larger total heat extraction area, so that the lithium ion core can immediately transfer the heat that appears inside to the outside world, guard against the heat that accumulates inside, and better match the higher heat. Than energy. Therefore, how to improve the specific energy of rechargeable batteries based on changes in battery specifications is also an important content of our company's research. 4. Application of lightweight raw materials In the application of raw materials, in addition to the upgrade of lithium battery materials, the improvement of battery pack materials is also an important measure to increase the ratio of energy to rechargeable battery system software. At present, the battery box materials mostly use aluminum alloy materials, high-strength steel materials and polymer materials. The relative density of aluminum alloy profiles is relatively small, only one-third of the steel, the use of aluminum alloy profiles instead of steel can significantly reduce the net weight of the battery, while the aluminum alloy profiles will continue to process a layer of high-density and stable oxide air film, which is resistant Corrosive, it is a high-quality lightweight raw material for batteries; high-strength steel and high-strength steel rechargeable battery shells can be lighter and lower in cost, which is better than traditional high-carbon steel raw materials; thermoplastic polymer materials cannot It is used repeatedly, and has low cost and good ductility. It is an ideal raw material for battery shells. At this stage, it has been widely used in battery packs. Disclaimer: Some pictures and content of articles published on this site are from the Internet, if there is any infringement, please contact to delete. Previous post: What are the advantages and disadvantages of large-capacity lithium batteries