from chemistry to pack
AION Engineering INC When engineering a Battery Thermal Management System (BTMS) for electric vehicles or energy storage, one of the most critical factors is hidden within the microscopic architecture of the cell itself. Whether a cell utilizes a wound (jelly roll) or stacked electrode assembly, its physical construction fundamentally dictates its thermal behavior. Heat does … Read more
A question the battery thermal team often face is: What is the Optimum Design of a Cooling Plate for Uniform Cooling? To achieve optimum uniform cooling, a cold plate must be designed to minimize temperature gradients across its surface and prevent localized hotspots. Cell to Cell Temperature Gradient The cell to cell temperature gradient in … Read more
Prismatic cells are typically surface-cooled when used in real world scenarios, and we have observed a growing demand for testing methods that align to this. Thus we have been investigating the best methods for replicating the conditions a battery may be used in. Recently, we conducted a surface cooling test on a 314Ah prismatic cell. … Read more
A look at the 2021 VW ID 4 82kWh battery pack. This battery pack architecture is used across a number of vehicles under the VW family umbrella and in a number of sizes. Hence, although this says the ID 4, this is the 82kWh battery design used by Skoda and Seat amongst others as this … Read more
The 2022 Nissan Ariya has two battery pack sizes, 63kWh (66kWh total) and 87kWh (91kWh total). The vehicle is also available in 2WD and 4WD variants. The details around the battery specifications are very scarce and hence lots of gaps we need to gradually fill. However, I think this is worth sharing for the thermal … Read more
Looking at the pouch cell design and edge cooling evolution allows us to appreciated the importance of battery cell electro-thermal behaviour. Fundamentally pouch cells are made from multiple layers of active material all applied to copper and aluminium electrodes that are sandwiched and compressed together. The copper and aluminium electrodes have very good in-plane thermal … Read more