from chemistry to pack
We have already looked at the BMW iX3 Neue Klasse Battery and the BMW Gen6 EV Battery Technology behind it. The second Neue Klasse model, the BMW i3 (badged NA0, reviving the i3 name for an all-electric 3 Series), uses the same Gen6 battery system, so this is really a companion piece rather than a … Read more
We have been looking at the BMW Gen6 Battery System since late 2022 with a slow release of data from BMW since then. A more substantial release and video of the technology was given earlier this year: BMW Gen6 EV Battery Technology. In the latest posts around the 26MY iX3 we are getting a few … Read more
AION Engineering INC In lithium‑ion battery design, internal resistance is one of the most critical parameters governing power capability, heat generation, fast‑charge performance, and overall efficiency. The difference in internal resistance between wound (spiral/jelly‑roll) cells and Z‑stack (stacked) cells is often misunderstood as a chemistry issue, while in reality it is largely a current‑path and … Read more
The original post on the Rivian R2 battery pack was based on the 2024 Rivian Investor Day presentations. However, with the messages from the Rivian CEO [1] earlier this year we are overdue an update. Trouble is the 2024 Investor Day R2 data left out a lot of the detail and so we were estimating … Read more
AION Engineering INC Cylindrical cells are widely recognized as the most suitable format for high-speed roll-to-roll production, offering scalability and manufacturing efficiency. However, despite their structural advantages, thermal management remains a critical design challenge, especially under high-power operating conditions. Cylindrical cells are widely recognized as the most suitable format for high-speed roll-to-roll production, offering scalability … Read more
Cylindrical lithium-ion cells have long used metal tabs to connect the current collectors to the terminals. These tabs act as the path for current to flow out of the electrode layers and into the external circuit. While this design has been reliable for decades, it introduces a few well-known limitations, particularly for high power applications. … Read more
In previous articles we’ve highlighted the benefits of aluminium cell housings for 4680 battery cells like improved thermal management and gravimetric energy density and explored the structural performance of 4680 cans made from Speira ION Cell 3-CB and Speira ION Cell 3-CS1,2,3. It has been shown that high strength aluminium grades like Speira ION Cell … Read more
Jiang Jibing, Vice President of EVE Energy and Director of the Battery System Research Institute, was invited to attend the China Electric Vehicle 100 Forum (2025) and delivered a keynote speech on “OMNI All-Purpose Battery”. A look at the 4 reasons why EVE believe in large cylindrical cells [2]: Author: Woody Wu at power9tech.cn Standardization Perfectly Aligns … Read more
The 2025 Lucid Gravity battery has been hinted at and now finally we get some values via the EPA application data [1]. Plus some calculations based on the numbers we have been given. Pack This post has been built based on the support and sponsorship from: Thermo Fisher Scientific, Eatron Technologies, About:Energy, Quarto Technical Services and Alvatek. Module The module has … 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