Lithium Batteries 101: Introduction to electrical modeling

Lithium ion batteries can be approximated with a very simple voltage source and resistance model. This circuit is then solved as a function of load power for the electrical parameters (voltage/current/ and power dissipation). These solutions can be propagated forward with a numerical solver to simulate the electrical response of a battery and predict its temperature. The OCV vs SOC curve is introduced and then modified to show how the load voltage varies with charge and discharge.
This is a new topic for precision stuff and I hope to add more battery related content in the future. If you are building FSAE racecar batteries this equation is the core of your battery simulator and the rest is just getting the data.

[@yotacoil]

Excellent battery math summary from a real life battery wizard

[@ruzzcraze1862]

Great video, it’s already been shared around the accumulator channel for our formula team. Excited to see additional videos.

[@sound.workshop]

this video gets me hot and increases my power level

[@robr8554]

Awesome video, very instructive. Thank you.

[@we-are-electric1445]

At 6:59 why is it not 2 in the denominator instead of 4 ?

[@lohikarhu734]

We did a model for a Nokia mid-size li ion cell, i think 1350 mAh.. we included some frequency response info...if that's interesting to anyone, i can try to dig it out of archives...we instrumented a phone with current probe and voltage probe, and did voice call sms and Wi-Fi, and the model looked very good, maybe >5% on 2 A loads.

[@animus3d663]

New video let’s goo