from chemistry to pack
Battery management systems are having their software moment. The rule-based, threshold-driven BMS that’s controlled batteries for a decade is giving way to something closer to a living system: one that learns, predicts, and increasingly runs partly in the cloud. Here are seven trends defining BMS research this year. 1. Machine learning takes over cell balancing … Read more
As the primary intelligence layer within a high-voltage battery pack, the BMS is tasked with ensuring the safety, longevity, and performance of electrochemical cells that are increasingly being pushed to their physical limits: The market for electric vehicle (EV) battery management chips, valued at approximately USD 1.56 billion in 2024, is on a trajectory to … Read more
When we look at the Battery Management System (BMS) History and Roadmap, such as that shown by Zhang et al [1] we see a long period of simple functions and reporting. Then an exponential growth in capability with Lithium Ion chemistry, the cloud and machine learning. The four generations of BMS are described by Zhang … Read more
Molicel, the Taiwan-based manufacturer known for producing some of the most trusted high-power lithium-ion cells, is expanding its 21700 product line. Long a favourite in motorsport, drones and aerospace, Molicel is now building a broader portfolio to serve a wider range of performance and energy demands. Their current roadmap outlines three distinct 21700 series: the … Read more
A look at the 2025 Battery Roadmaps. Perhaps closer to describe this as a start of 2025 review of the latest battery roadmaps, research and funding directions that will shape the industry. Here we look at the four largest cell manufacturers and across the government funded research. The big themes are: As China pushes the … Read more
A look at the 2024 Battery Roadmaps and perhaps the direction that the battery and application industry are moving towards. The data has been taken from the last half of 2023 and the first quarter of 2024. 2 years ago we plotted a Cell Energy Density Roadmap. Then as an update in 2024 we overlaid … Read more
Cell Sample Maturity is normally defined by the A, B, C, D sample definitions. These stages of the cell design, production line development and material supply are key to the relationship between the cell manufacturer and cell customer. The customer needs to have confidence in the cell design, robustness and quality and this is only … Read more
Cell Gravimetric Energy Density with the units Wh/kg is a key cell metric. The optimum metric is a high Wh/kg. Hence: High nominal voltage High Ah capacity Low mass Perhaps the simplest of the battery metrics as the capacity of the cell is fairly easy to measure and the mass is just a set of … Read more
It is interesting to look at the cell energy density roadmaps and include the production energy density of the cylindrical cell. Why the cylindrical cell? Well, it’s the most complete cell in terms of function as it has a case that contains the working forces over the lifetime. It normally has a venting system and … Read more
Lithium sulfur is perhaps the most mature of the ‘beyond Li-ion’ battery chemistries with a potential energy density of >600Whkg-1. Also with the potential for substantially reduced costs and improved safety. However, a number of challenges mean that cycle life has been poor. Hence the potential attracts attention and much needed research at the fundamental … Read more