from chemistry to pack
Base vs side cooling of cylindrical cells is often brought up in online discussions and in many OEMs designing battery packs. We looked at this before within Thermal Conduction in a Cell, however, I think it is worth expanding this topic. The Tesla design cools the side of the cell and the Lucid Motors cools … Read more
LG INR21700 M50 has an NMC 811 formulation for the cathode and a Graphite-SiOx anode. It is in the 21700 cylindrical format. Key features Designed to meet Dimensions The diameter is given based on largest measurement at the top of the cell (Section A) Test data Capacity vs Temperature Discharge Temperature [°C] Energy [Wh] -10 12.7 … Read more
Gases are generated in the cathode, anode and electrolyte during the formation and cycling of a battery cell. As this is a closed system the result is a cell gas pressure. What this gas is composed of, how it behaves and how it changes with State of Charge (SoC) and the cycling of the cell … Read more
In this Article you will the details about the Rivian R1T Battery pack and Module Construction, Standard Specification, Key Pack Metrics.
Cylindrical Cell Electrode Estimation: An alternative geometric approach. Here we present a simple method for estimating electrode length in a cylindrical cell. The method is equally applicable to other formats since we make an estimation of the total active electrode area. Results require knowledge of one electrode Active Material (AM) chemistry, electrode porosity and thickness … Read more
Using some simple mathematics and dimensions we can do some cylindrical cell electrode estimation. Knowing the outer and inner diameter of the spiral along with it’s thickness we can calculate the length of the material to create it. D is the inner diameter of the cylindrical can. The inner diameter is that of the mandrel … Read more
In this Article, we will compare different Cylindrical Cell Sizes used in electric Vehicles. 4680 vs 21700 vs 18650.
A look at the Ducati V21L Moto E battery. The development of the project is already in an advanced stage and is proceeding at a rapid pace towards 2023, the year in which Ducati will take on the role of sole supplier of the FIM MotoE™ World Cup with 18 electric bikes on the track … Read more
The Lucid Air battery design has single side 21700 busbars. This means the positive (+ve) and negative (-ve) connections to the cells are made on one end of the cell. Lucid Motors The busbars very neatly interlace, connecting the negatives on one group of parallel cells to the positives on the next parallel group of … Read more
The Lucid Air has been designed to take on the best that Tesla can offer. Atieva (Lucid Motors technology company) designed and made the 2019-2021 Formula E packs. They have used that experience and knowledge to improve the road cars. With the longest driving range of any electric vehicle on the market, an EPA estimated … Read more