from chemistry to pack
Since I know that this is a delicate topic, and many get confused, I will explain very briefly the nomenclature that I used. The IUPAC defines the anode as the electrode at which the oxidation occurs and the cathode as the electrode at which the reduction occurs. Therefore, in a galvanic cell, the negative electrode … Read more
Most cell selection still begins with datasheets, because they are the only information engineers can easily access early on. That is understandable, but it is also why teams spend months testing “promising” cells that later fail in a real pack. The root issue is simple: a cell is not a battery pack. Effective selection requires … Read more
The lithium-ion (Li-ion) battery didn’t make headlines immediately — it took nearly two decades for the world to truly appreciate its potential. What makes its origin story unique is that it wasn’t developed in a single lab or even by a single team. Instead, it was the result of separate breakthroughs made by scientists in … Read more
AION Engineering INC The 1.3 g/Ah Rule: A Starting Point When designing lithium-ion battery cells, a commonly referenced benchmark is the electrolyte mass-to-capacity ratio, typically around 1.3 g/Ah. This serves as a useful starting point for many applications, providing a baseline for ensuring sufficient ion transport within the cell. Why C-Rate Matters However, this ratio … Read more
How do different battery chemistries compare in terms of calendar ageing? When we look at battery lifetime the standard method used by industry has two fundamental test regimes as inputs: Here we are focussing on the Calendar Ageing, this is all about how the cell ages just left on a shelf doing nothing. Dubarry et … Read more
At the 2025 International Battery Seminar & Exhibit in Orlando FL (USA), Prof. Jeff Dahn (Dalhousie University) highlighted how Si-carbon composite active materials prepared through monosilane deposition on carbon matrices exhibit very promising cycling stability. Prof. Dahn emphasized that the quantity of liquid electrolyte has to be very carefully controlled in such high-energy cells to … Read more
Cylindrical cells are commonly joined using several methods, each with distinct advantages and disadvantages depending on the application. Here are the most popular methods: Spot Welding Description: Spot welding uses a controlled electrical current to create localized heat, fusing a nickel strip to the positive and negative terminals of the cells. World Electr. Veh. J. 2018, 9(2), … Read more
Battery electric vehicles (BEVs) are seen as the cornerstone of a more sustainable future of transport. Batteries are the key technology for powering these vehicles. However, the production of battery cells involves energy-intensive processes that result in significant CO2e emissions. As a result, BEVs have higher carbon footprint in production than internal combustion engine (ICE) … Read more
Knowing the power demand for a battery cell or pack is really useful, but how do you turn that into a current demand? The following image shows the solution we use in the Battery Calculations Workbook and in the Vehicle Model. At first it can look daunting, but it is quite simple, maybe too simple … Read more
The 2024 Porsche Taycan Turbo S will be getting a lot of attention as the 2019 Porsche Taycan broke a lot of the ground with 800V and huge performance. This facelift has introduced some significant increases in power and efficiency overall. Specifications The total energy has increased from 93.4kWh to 105kWh and the usable window … Read more