BATTERY CHARGER, 24 - 95V, Using Constant Current Boost Converter.
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- čas přidán 25. 07. 2024
- This video shows the simple build of a cheap DIY universal battery charger that can charge all battery types and voltages between 24 and 96V. This design uses two cheap recycled server power supplies and a constant current boost converter to regulate the output. This Charger can be used to recharge car batteries, solar batteries, and even solar generators.
This is basically a DIY design of a Battery Charger, and Home power supply, 1000W, Using Constant Current Boost Converter.
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I like the simplicity of your videos, but you should open the server power supplies to show PRECISELY how to isolate the ground, please
Thanks a lot for watching my videos and for leaving such a wonderful feedback.
However I have actually made the video to show the insides of this server power supply and how to isolate the ground - see the link below. It's and older video and the camera I used then wasn't really that great, but you can check it out to see if it covers what you need.
czcams.com/video/V4-azirqbco/video.html
This is exactly what I needed for my project thank you so much 🙏🏼
Hi friend!
I am really glad you found our videos helpful.
👍👍
Such wonderful feedback makes it all worthwhile.
Thanks a lot!
Please, we need your help to share our videos - this way, we will continue to reach a wider audience.
Greetings, great instructional video. When you connect the PSUs in series do you isolate ground on both of them? Thx
Thanks a lot for the feedback.👍👍
Yes, you have to isolate the grounds, I'd you want to connect the outputs in series.
keep going brother.good luck.learned lot of things.
Thank you so much friend!
I appreciate your wonderful comment!
GREAT VIDEO!!! I am going to build this. I have all parts you used. BTW, you can simplify solder a jumper wire on the server supplies...I have several for supercap charging. I also ordered another power meter.
DID YOU RE-WIRE THE METER WITH THICKER WIRES???
Thanks again! Thumbs up and a sub!!
Hi friend!
It really makes me happy that you are going to give this setup a try.
You are right about simplifying the output connections of the server power supplies - with a jumper wire. However, make sure that your jumper wire is properly insulated. Each of those server power supplies is rated for 65A, and you don't want that shorting.
Digital meter:
There is no need to change the wires because the short wires it came with are tinned wires and should be able to handle up to 60 - 100A. Please check the manufacturer spec. If you want to add longer wires, then you need to size them appropriately to handle your expected maximum output current. You can search online for "Wire Ampacity charts"
Success wishes on your project, my friend.
👍👍😎
Nice experiment bro! Keep it up! I am emulating yours.
Thanks a lot, friend!
I truly appreciate the kinds words. Please let me known if you any questions.
thanks a lot for this video
do you know if it is possible to connect multiple boost converter in parallel, assuming we have enough power from the switch power supplies?
what would be the issues if any?
Hi friend,
Thanks a lot for the great feedback.
It is always more difficult to connect individual SMPSs in parallel, especially if they are not designed to do so.
But this is something I will try with these converters in the future.
Stay tuned, my friend!
👍
What are the two 12v batteries for? Are they LiPo's in series with the blue pak? At first glance, I assumed that the blue pak was the 24v batt...is it 12v in series with the two black batt's?
Thanks much!
Hi friend.
The goal was to show that it is possible to use the boost converter to recharge a 48V battery system for a 24V power supply (the server power supplies).
The battery breakdown is basically ==> 12V + 12V + 24V.
The BLACK batteries are 12V lipo batteries, while the BLUE battery pack is a 24V lithium ion.
Caution: As I might have mentioned in the video, it is not recommended to mix battery chemistries for your projects. I only did that for a controlled short duration test. Please, I will recommend you don't do that. Use the same battery chemistry for your project.
Thanks again for watching and for asking such a thoughtful question.
Success wishes on your project, my friend!
👍👍😎
bro is this good for long time use?(dc-dc boost converter)how was your experience with this.coz am going to buy one for make a 72v battery chager so may be i can use that for long time?
Thanks a lot for watching my videos and for such positive feedback.
Yes, it is good for long time use. As long as you understand the limitations of the components you end up using - such that you don't overload it. Another trick is to make sure you use a good fan to keep the boost converter cool.
I built my first one 4 years ago and I still use it till today.
Like the videos of testing the boost converter. I am looking to parallel 3 of those boost converters to convert 12v (gonna set to turn on at 13.8v) to charge batteries at 57.4V. Do you think it’s a good idea? Or should I get a converter to boost it to 48V before sending it to this boost converter to get a higher current 57.4V output?
Great question, but I not sure I fully understand what you are trying to do.
Why do you need to parallel 3 of the converters?
Just a small side note, paralleling the converters, does not work well - especially st high loads.
I won't recommend for you to do that.
👍😎
The Innovati0n Lab💥
@@theinnovati0nlab782 My original plan was to parallel the converters if it could work to charge a 20kWh 48v DIY battery system using 12v system in my truck. The battery would be used to power comfort loads in the truck so I don’t need to run the engine to stay cool in the summer or draining the truck batteries every night. Sounds a bit of an overkill for the total power but I need to system to provide me up to 30 hours without charging and can charge at least 50% in 10-12 hours when the engine is running each day. Charging through a converter in 14v 30A max would get about 20% capacity each day so I would need higher output power. My other option is to get a converter that can boost the voltage up to 48v with relatively high output power and use the converter to fine tune the safe fully charged voltage.
Awesome 👍 bro 😘🇧🇩🇧🇩🇧🇩🇧🇩
Thanks a lot for watching our videos and for such wonderful comments.
Our goal is to reach a larger CZcams audience and help fellow DIY hobbyists. Please don't forget to help us by sharing our videos.
hi can you try it from 12v to 72v charging? bcause mine is only 2amps below getting rated
Yes, you can. According to the specs of the 1500W boost converter, it accepts input voltage ranges between 10 to 60V and output ranges between 12 to 96V. So you should be able to adjust the output voltage high enough to charge your battery.
@@theinnovati0nlab782 yes but i only get 2amps pls try to 72volts thanks.
they should make a case this is the 4th 1 ive bought....can somebody do video of using the basic parts?
Thanks a lot for watching this video and for leaving a comment. However, I am not sure I fully understand your question.
The DC to DC converter can i use 2 of them for more voltage and current
Thanks for watching our videos.
However, with the current design of the boost converter, it is possible to increase the output voltage a little. But you have to change some of the drive components on the output like MOSFET, rectifier diodes, and filter capacitors.
But you cannot connect two or more of these converters in series - because both the input and output are referenced to the same ground (-ve).
Please watch my last video on the High Voltage charger experimental video.
Also, I plan to make more experimental project videos to show some stuff I have been testing.
Please don't forget to help our channel by sharing our videos.
Thanks again!!
@@theinnovati0nlab782 do you have video on which you modify it to handle higher currents? Is it possible to make it handle 60A?
@@ffre4kI believe you could run w in parallel to double the output amps.
If I need an output voltage of 38V Can it be adjusted? So what must I do?
Thanks a lot for watching our videos. 👍👍👍
Please watch the videos below. I believe that the output voltage and currents were covered in great detail in these videos.
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czcams.com/video/WDWJ77WWkXc/video.htmlsi=FyggrOVDdTvqrlrX
czcams.com/video/Hn8XeqQh70U/video.htmlsi=N6RUv7j0Y6o-Ve9h
czcams.com/video/0Ct_sgbAjU4/video.htmlsi=snrpkq4-jwaQVcWb
i need help before buying this converter
if i give an input voltage of 24v can i get output voltage below 24v like 12v please reply???
Hi friend,
Thanks for watching our video.
The quick answer will be no. The converter shown in this video is a boost converter. It will only boost your input voltage to an adjustable higher output voltage level. It seems that what you need will be a buck converter.
Unfortunately, I have not found a good reliable buck converter that I can recommend to you. When I find a reliable buck converter, I will do a test video for it.
Stay tuned, my friend.
@@theinnovati0nlab782 ok
Subbing for that
Thanks a lot!
interesting...Can use ATX power supply ..? or limited to server power supply.. .
Hi friend,
As long as your power supply can provide anywhere between 10V to 60V DC output voltage range, it should work.
Si
Success wishes, my friend!
👍👍
Ciao sono forti i tuoi video .
Ti volevo chiedere se questi convertitore dc dc si possono parallelare tra di loro per avere piu corrente?
Grazie
Thanks a lot for the great feedback👍👍
Please watch the video we made on paralleling these converters. It will answer all your questions, I promise.
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czcams.com/video/EKqIIOe_q8k/video.html
If I wat to change with 72v DC. How many power supply needed in series?
I am not sure if you meant "charge" or "change"😊.
But if you are looking to charge a 72V battery system, you can do it with one single 12V server power supply. However, your input power will be small. Using more server power supplies in series will give you more input power.
See my math below:
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1 server power supply:
Available input power = 12 * 30 = 360W ==> if you account for efficiency losses, you will have about 300W.
To double or triple or quadruple your input power, you can add multiple of the converters in series.
CAUTION:⚠️⚠️
For the series connection to work, you just have to make sure that the converters are output ISOLATED from the Earth GROUND as shown in the video below.
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czcams.com/video/bljHMx3Mj78/video.htmlsi=i1ZHHeolrMhNH11j
I hope this helps.
👍😎
The Innovati0n Lab💥
@@theinnovati0nlab782 it is charge my bad. Thanks for the explanation.
Im finding this UPS with 50v output
Huawei R4850g it's about 3000watt
It's should be easyer the step up handle right? But I'm hard to find the necessarily canbus to make it works.
@surapurna
That will be better if you can figure out how to make it work.
That is why I use the HP ones because they are super easy to implement with just one resistor.
"Two 24 volt battery packs" . They say 12V each. You don't need 62 V to charge them in series. And since there is no balancing, they should be charged in parallel.
Thanks a lot for the positive feedback.
Sorry about the confusion. There are essentially 3 battery packs all connected in series (48V) for the testing;
Breakdown:
- two 12V 30 Amp/hr Lipo packs connected in series = 24V (the black battery packs)
- A single 24V Li-ion pack (the Blue battery pack)
So overall:
12V + 12V + 24V = 48V
Please let me know if have any question as to why I was charging them with 62V so I can explain.
@@theinnovati0nlab782 They should not be charged in series because they are different capacity and may have different SOC. There is no overall BMS so you can't guarantee that one won't be exposed to excessive voltage, be damaged, and catch fire. If you rely on the individual pack BMS, whichever pack is fully charged first will interrupt charge current to the others.
Just subscribe to your channels, i have already build one server power supply based on your design and thanks , two things i need , designs files for PSU Bracket you 3D printed and some help switchin on my DPS-750PB A server power supply dont seem to find any pinout on the net, will appreciate
Thanks a lot for subscribing to our channel. I am glad you found our videos helpful. Regarding the DPS power supply, what I remember was that some of these power supplies are intentionally designed to make hacking them for DIY purposes difficult. I will recommend using the HP server power supplies for now. I found that the 750W and 1200W models have similar pinout configurations - for enabling the power outputs. However, if I find some good information regarding the DPS models in the future, I will make a video to share it.
I hope the helps.
👍😎
The Innovati0n Lab