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Understanding Battery Management Systems (BMS) / Redlink Intelligence

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20:11
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At 10:00 in

The First behind the scenes look EVER allowed at How Milwaukee Tools builds power tools & batteries

What happens here

This crucial step highlights the electronic 'brain' within each Milwaukee battery: the Battery Management System (BMS), known as 'Redlink Intelligence.' The presenter displays exposed circuit boards from various battery packs, illustrating how these sophisticated electronics continuously monitor critical parameters such as individual cell voltage, temperature, and current flow. The BMS is essential for protecting the battery from damaging conditions like overcharge, over-discharge, and overheating, thereby ensuring both the safety of the user and the longevity of the battery. Furthermore, the Redlink system facilitates intelligent communication between the battery and the tool, optimizing power delivery for efficient and consistent performance.

Goal: Learn about the function and importance of the Battery Management System (BMS) in cordless tool batteries.

Tools and materials

  • Exposed Battery Management System — Illustrating the electronic protection within battery packs

What they say

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under the light a little bit more Andrew I want it because this is kind of important I want to make sure we get in here and see this so it's same 24 hours in the shower in three days same exact test okay okay so what you see is this pack failed basically immediately and it corroded through once again going back to that steel steel corrodes very easily right versus our pack pretty much untouched right okay so what that means is it's going to be protected against those conditions okay got it cool so what's next so what's next so that the final thing then talk about battery packs does need electronics right are the intelligence so we do a lot within this to make sure that once again we're protecting you know your viewers investments so anyway that buys a battery if it did get expose its exposed to a harmful condition it has the intelligence to protect itself so what I mean by that is you know say someone tries to do something crazy and you know jump-started you right or they put a product on it that it's not intended for yeah they not they take the notches out of the battery and try to hook it up for something that's not supposed whatever works whatever maybe if case tell me these stuff all the time okay you just cut this snip off and you can hook it up to this and I'm like okay right right yeah so it has intelligence to be able to protect itself from an overload standpoint or you know the the tool binds up the a will say alright I'm gonna shut myself down same thing with heat so if it if you're really going to town working the pack art says you know what I've got two hot I'm gonna shut myself down wait wait a couple minutes and I'm ready to go again okay now the other cool thing we have is every battery has a unique charging profile and what I mean by that is it's dependent upon the cell type and the pack type so they all have intelligent charging and the benefit of this is that you're gonna be a faster charge but you're also going to extend the life of the pack okay now within our m18 batteries we do have three different types of packs if you will and these are all 18 volt batteries so we have this guy which is called a compact battery it has five cells it's ideal for you know drilling and fastening if you're doing overhead work that kind of stuff step up we have what's called an XC

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