from chemistry to pack
AION Engineering INC When you open the datasheet of a lithium-ion cell, one of the first values to catch your eye is the internal resistance. Typically, it sits there as a single, proud number: ACIR: 15 mOhm. Many engineers look at this number, validate the “quality” of the cell, and integrate it into their vehicle … Read more
AION Engineering INC Why High Porosity Can Lower Resistance in Power Cells Introduction Area Specific Resistance (ASR) is one of the most important performance indicators in lithium ion cathodes. Engineers often assume that reducing porosity improves conductivity and therefore lowers ASR. This idea comes from the expectation that a denser structure provides better particle contact … Read more
Internal Resistance: DCIR and ACIR:- Let’s take a tiny step and understand how IR is measured in the first place. How are resistances measured? A small current is injected into the component and voltage is measured across it and then resistance is calculated by R=V/I; yes! This is how a multimeter does its’ job; it’s … Read more