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Improve the energy density of lithium batteries

Time:2021-02-22 Views:246

  Increasing the energy density of lithium batteries is a relatively systematic thing. We can start by optimizing the battery structure, developing new materials, and improving the manufacturing process. Only in this way can the energy density of lithium batteries be increased. The following Guangdong lithium battery manufacturers Tell everyone about it.

Improve the energy density of lithium batteries

  1. Optimized arrangement structure: At present, most battery packs are constructed with various fixing cards and supporting elements in various fixed battery packs. Many structural elements have a large volume and mass, which greatly reduces the overall integration height. Efficiency, the arrangement structure of the battery pack is adjusted, and the structure of various installation support points is simplified, which enables the lithium-ion 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, forming a standardized battery pack through several large-space lithium-ion battery packs, and then intelligently stacking them into a larger battery control module , These programs 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 solution for lithium-ion battery packs has become the technical direction chosen by many companies.

  2. Application of light materials: In the application of raw materials, in addition to the upgrade of lithium-ion 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 produce a high-density and stable oxidation air film, which is resistant to Corrosive, it is a kind of high-quality battery lightweight raw material; high-strength steel, high-strength steel rechargeable battery shell can be lighter, and the cost is also lower, better than traditional high-carbon steel raw materials; thermoplastic polymer materials cannot Repeated use, low cost, good ductility, is an ideal battery shell raw material, and has been widely used in battery packs at this stage.

  3. Changing the specifications of rechargeable batteries: Changing the specifications of rechargeable batteries is also a major aspect of expansion. For example, by changing the length and total width of the rechargeable battery, the lithium-ion battery becomes flatter and narrower in a certain volume, which is beneficial to the overall arrangement of the lithium-ion battery in the battery pack and can increase the space of the power lithium-ion battery Utilization rate, producing a battery pack with greater energy. This kind of graphic design 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 generated inside to the outside world, prevent the heat generated by the internal accumulation, and better match the higher Than energy. Therefore, how to increase the specific energy of rechargeable batteries according to the changes in battery specifications is also the main content of our company's research.

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