3d design software free download lithium battery pack

The height of the Blade Battery is reduced by ~50 mm, compared with regular LFP battery back with modules, providing more space to the passengers and decreasing the coefficient of drag (0.233 cd for BYD Han). Vehicle designers are seeking to reduce the space needed for the battery and the height is a prime target. A schematic of battery pack fixed under passenger seats in the vehicle. The Blade Battery is BYD’s realization of the CTP concept (Figure 1).įigure 2. Many battery manufacturers, such as BYD Auto, CATL, LG Chem, and SVOLT, are exploring CTP technology. With CTP technology, battery packs are assembled directly from the cells without the need for modules. With the aid of advanced fabrication technology on the materials and cell levels as well as an updated battery management system (BMS), module-free batteries have become a hot topic. The additional steps needed for assembly also increases the manufacturing cost. In a conventional battery pack, this limits the GCTPR (gravimetric cell-to-pack ratio) to 77% or lower, and the VCTPR (volumetric cell-to-pack ratio) is typically around 50% but sometimes even lower than 40%. The trade-off with this design is that the terminal plates, side plates, and internal connectors of a module take up space and weight. In addition, modules can provide some structural support for the pack.

This allows malfunctioning of cells to be controlled on the module level and allows for modules to be replaced individually as opposed to the entire pack. This intermediate step divides the battery into separate modules, each of which can have its own independent battery management and diagnostic systems. The conventional battery manufacturing process is from cell to module, and then from module to pack. Here, we explain how this novel design is realized in the module-free battery using cell-to-pack (CTP) technology. In the previous article, we described the concept, specifications, pros and cons of the BYD Blade Battery from cell level. With the module-free pack design, VCTPR and GCTPR can be enhanced to over 60% and 80%.The geometry of the Blade Cell is a key to the realization of the module-free battery pack.

With cell-to-pack technology, BYD designed the module-free battery pack using the Blade Cell.

3d design software free download lithium battery pack