Powering Up Your Board From a Battery? You need to know this ...
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- เผยแพร่เมื่อ 15 พ.ค. 2024
- This video includes explanation of battery charging and safety schematic circuits. Thank you very much Alex Norman
Other Links:
- Alex ' LinkedIn: / alex-norman-eetengineer
- Alex's TH-cam: / @eetengineer
- FEDEVEL courses: fedevel.com/courses
Chapters:
00:00 What is this video about
01:33 Types of cells and batteries
05:43 CID and PTC battery protection
08:44 Prismatic cells
10:37 Pouch cells
16:02 Lithium Ion (Li-Ion)
17:28 Peak charge and nominal voltage, end of discharge voltage
20:30 Thermal runaway
22:32 Lithium Iron Phosphate (LiFePO4)
26:15 Nickel Metal Hydride (NIHM)
29:23 How cells are connected together
32:31 Battery testing standards
36:38 Battery safety circuit - Safety features
44:28 Battery safety schematic circuit explained
55:31 Safety circuit integrated in batteries, shipping and transport
1:06:04 Battery charging schematic circuit explained
1:21:01 Battery charging schematic circuit example 2
1:27:23 About Alex
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- Robert - วิทยาศาสตร์และเทคโนโลยี
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As an EE working in the industry. These video are so helpful thank you for the content.
Thank you, great pace and detail and very clear explanation.
Please consider doing a follow up on charging battery banks, like 2S 2P battery banks for example.
Well explained, easy to follow and understand. And definitely useful and helpful. Thank you Robert and Alex!
This is a nice subject, helping makers a lot making better and safer devices.
Thank you Alex and Robert!
Very informative video about using rechargeable lithium batteries in projects 👏
Thank you very much Robert and Alex, this video was so interesting and helpful !
Im going to follow Alex to learn more
This channel is so practical and useful. Deep dives with experts who know the subject matter from actual work.
I've found batteries frustrating; there are so many options but I don't know why I make any choice. I feel like I'm on better ground after watching this.
Hey Robert, find someone from EV or drone applications. Never saw someone properly design multiple battery management with inductive loads. How to make recuperation properly? How properly connect multiple batteries that may have a little bit different voltage? Depencding on EV/drone voltage goes 12-60v 10-200A, want to see some basics about it.
If someone has any tip for a specific person for the video, let me know (send me message on linked in)
If BMS will cutt off power during fly drone will drop down and damage itself, that's the reason
@@sXAPOLLls battery cell will not short by itself, if there would be shortcut it would be by electric components side so yes, bms in drone is useless. Maximum what it can need is cell balancer and S voltmeter to let know when cutoff charger and report battery issue
Great full current frequency buffer & thermistor also nice thanks very much.
Great video! I've just finished meddling with battery protection circuit in one project. I've found that with one simple change to standard IC you can protect your circuit from reverse polarity. By placing a diode between the IC ground and the battery ground -you prevent damage to your circuit by blocking the reverse voltage.
Great video, thank you both of you
another gem/pearl! thank you
This was extremely good!
Good presentation
Thank you Robert for the video, it's always interesting to see how someone else solves problems same to yours, but I was surprised that you didn't dived deeply into the hardware building, decomposition of analog and digital solutions of separated BMS elements, heat dissapation, high current nets tracing etc 😢
Buy the way do you planning make some interviews about basic radio building, i watched your interview with cute lady about antennas, but that's a little bit different topic
I will post videos about radio transmitter and receiver soon - 1-2 months. Tx PCB already ordered - to be tested soon.
Awesome! learnt a lot from this!
Great content. really really interesting . glad to find you guys
Definitely would be nice to get an overview of usb C charging and delivery concepts, with some sample circuits and chip sets commonly used.
Really interesting video 👍
Hi Robert, love your channel. Thank you and Alex for providing us that clear explained content about batteries. What i missed a little was how to deal with stacked packs like a 4s7p or something like that? What is with cell balancing? Do i need it for every single cell? Or just per each node where the voltage equals?
the video I was waiting for❤
Thanks a lot for your superb content ! A relatively "consumerish" question ... Since a battery is specified in terms of its charge / discharge cycles, suppose we keep the appliance (eg. laptop) powered continuously by the charger, would it prolong the battery life. I assume that a laptop would draw power from the charger and not from the battery, hence seldom discharging the battery.
i just encountered a new problem with battery powered designs. when the battery is first inserted, the battery holder springs create a series of loose contact phenomenon (similar to a switch debounce). The protection IC doesn't immediately see the battery voltage at its full value but a sequence of pulsating values instead. The battery protection IC interprets this as an over-discharged situation and therefore disconnects the battery from the rest of the circuit. i just added a larger cap on the protection chip to delay its startup just enough for the battery voltage to stabilize
When using one single 18650 battery to power an esp32 project at 3.3V through an HT7833 LDO, how should input and output capacitors?
If the battery that I am using in my project has a built-in protection circuit (DW01A IC), is it worth adding another DW01A protection IC on the PCB of the designed device? Or does it miss the point and could cause problems in the operation of the built-in protection circuit?
If the battery pack already has protection, then there isn't a need to add another protection IC. They may conflict with each other.
@@eetengineer Thank you for response.
Is there a way for a common person to tell if a battery is damaged and is going to burst and cause a fire in a next few days or weeks, save for obvious swelling? A have a few old devices with Li-ion batteries lying around without use - are they becoming dangerous over time?
Batteries normally only become hazards of they are abused. Ex: temp, current, discharge level.
Aside from swelling, there isn't a good way to visibly asses the state of a battery. You can use a DMM to check the cell voltages.
If a cell is really low or 0V, it would be better to properly dispose of it, especially if it is more then a few years old.
what about usb fast charging and data transfer on the same port
dendrite growth in battery cells sounds like a similar phenomenon to solder whiskers
He didn't talk about BMS.
It's already a 1:30:00 video, man!! They can do a follow-up.
@@guillep2k He still didn't even mention a BMS.
We discussed some simple safety circuits (BMS) at the 37:27 mark. If your looking for more detail about BMS systems, I have a series on my channel where I am designing a BMS system step-by-step.
@@eetengineer I missed that. Good video. I'll check out your web site.
@@eetengineer Did that have discussion of cell balancing?
BRat moj mogao si malo bolje taj Engleski nauciti kad si vec tamo otisao!
the algorithm suggested the video and i swear for a minute i think i was looking at dave from eevblog
Can we do a part 2 please? Can we talk about reverse polarity, BMS for multicells, etc?