How do you improve the energy density of a lithium-ion battery?

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

How to improve the energy density of the lithium-ion battery system? Improve battery system energy density is a system engineering that can start from development of new materials, optimize battery structure, improve manufacturing technology. 1. Strengthened lithium battery material uses different organic chemical management systems, you can change specific energy.

For example, in a cathode material of a lithium ion battery, the occupancy of nickel, cobalt, and manganese elements is adjusted, and the usage of nickel is improved, thereby improving the ratio of lithium ion battery. On the cathode material of the lithium ion battery, the volume of the silicon / carbon polymer material can reach 4200 mAh / g, and the basic theoretical capacity of the lithium ion battery is only 372mAh / g. In addition, many lithium-ion batteries have volume damage during the entire process of charging of the battery, and there are some lithium-ion batteries that are damaged throughout the entire circulation system, and therefore, the lithium-ion battery or lithium ion battery electrolyte lithium element Filling technology is also aiming to study for new batteries.

2. Optimizing the arrangement, most battery packs are various fixed cards in various fixed battery packs, a structural approach of supporting components, and many structural components have a large amount of volume and quality, which greatly reduces high efficiency of overall integration. Adjust the arrangement structure of the battery pack, simplify various mounting support point structures, which enables the lithium ion battery pack to have a higher volume in a relatively limited room space.

This year's CTP (CELLTOPACK) has changed the structure of the past lithium-ion touch battery pack, which forms a standardized battery pack through several large spaces of lithium-ion battery pack, and then intelligently stacked into a larger battery control module. These programs not only reduce the total number of components, but also greatly improve space utilization and comparison. Therefore, the structure of the rechargeable battery pack is simplified, and the secondary integration method of the lithium ion battery pack is formed, and it has become the technical direction of many companies.

3. Change the specifications of the rechargeable battery to change the specifications of rechargeable batteries are also a desirable aspect of the extension. For example, by changing the length and total width of the rechargeable battery, the lithium ion battery becomes more flat and narrower, facilitating the overall arrangement of the lithium ion battery in the battery pack, and can increase the space of the power lithium ion battery Utilization, battery packs than energy.

This plane design method can also make the lithium ion core have a large total exhaust area, so that the lithium ion nucleus can immediately pass the internal heat to the external world, the heat inside the alert, better cooperates with higher Comparable. Therefore, what is going on based on the change in battery specifications, the specificity of the rechargeable battery is also the desirence content of the company. 4.

The use of lightweight raw materials In the use of raw materials, in addition to the upgrading of lithium ion battery materials, the improvement of battery pack materials is also a measure of the proportion of energy and rechargeable battery system software. At present, the battery box material uses aluminum alloy materials, high-strength steel materials and polymer materials. The relative density of the aluminum alloy profile is small, but only one-third of steel, the use of aluminum alloy profiles can significantly reduce the net weight of the battery, while the aluminum alloy profile will continue to process a high-density, stable oxidized air film, with resistance Corrosive, is a high-quality battery light raw material; high-strength steel, high-strength steel rechargeable battery housing can be lighter, and the cost is also low, better than traditional high carbon steel raw materials; thermoplastic polymer materials cannot Repeated use, and low cost, good delay, is the ideal battery housing raw material, and it has been widely used in battery packs at present.

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