Supercapacitor Energy Harvesting - What You Need to Know - Workbench Wednesdays
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- Опубліковано 1 лип 2024
- Low-power IoT devices can harvest energy from wind, heat, and solar sources, and you can store that energy in a battery or a supercapacitor. With help from Eaton, James talks in this episode about what electric double-layer capacitors (EDLCs) are, considerations for when you'd want to use them, and a small demo where we harvest solar energy into a supercapacitor to drive a Raspberry Pi Pico W.
Discuss the episode and ask James questions on the element14 Community! bit.ly/42PXYFW
Shop - capacitor products from Eaton: bit.ly/3pdhLSc
Article from Eaton - Supercapacitors vs Batteries: eaton.works/42RaHZg
Eaton's supercapacitor calculator: eaton.works/3JiWYmP
Engage with the element14 presents team on the element14 Community - suggest builds, find project files and behind the scenes video: bit.ly/3tmdewv
Visit the element14 Community for more great activities and free hardware: bit.ly/3q6YMpu
Tech Spotlights: bit.ly/3qPrDhM
RoadTest and Reviews: bit.ly/3pV5Bux
Project14: bit.ly/31wbnJY
#0:00 Welcome to Workbench Wednesdays
#0:53 EDLC Overview
#3:30 Charge-Discharge Behavior
#6:14 Energy
#8:05 Harvest "Solar" Energy
#12:09 Give Your Feedback
#supercapacitor #capacitor #eaton #solarenergy #energyharvesting #battery #raspberrypi #raspberrypipico - Наука та технологія
I did a very similar project. With just 10F and a small solar panel, sending measures every 15 mins it survives almost 3 full days without any sun!
It was with Arduino Pro mini, a boost converter to make sure that you get always 5V even with weak sun, to get all the supercaps voltage range. Otherwise the panel almost never produces anything close to the maximum, 5V, and you loose the caps voltage range (5V down to 2.8V aprox).
Very cool, you have covered a lot of supercapacitor topics that I have been thinking about for years.
If you are interested in supercapacitors you might also find useful these videos www.youtube.com/@incomessproject32/videos
Cap or No Cap! I Really enjoyed that
The first thing that comes to mind is spot welders, the second thing is unintentional spot welders. Followed closely by expensive.
Any chance you can tell us where that EDLC charge controller board came from? Or the chip part number??
Finally caught the 'Mikroe' brand on it, and found it on their site. The Mikroe UPS Click.
For a super hero name I'd go with "Captain Super Cap" 😁
still looking for a proper module for series super capacitor management (balancer). mostly for over voltage protection.
Post a link if you know one
Maybe I should just use a buck converter for each capacitor,
and put those converters in series. That would mean I need isolated output modules.
Would that work?
Linear (now Analog) has a decent range of controllers. I'd start there.
As @bald_engineer recommended, you can browse Linear's range on the Farnell online stores: bit.ly/3CEULyu and Analog Devices range: bit.ly/3CI6352
Thanks! I'll take a look.
I see... I am looking for a ready to buy module, not to design one from components.
I would think this would be possible, with all thoses BMS systems for batteries.
But apparently the super capacitor market is still small...
So, is it correct that there's no way to lock the charges in it and use whenever need it?
Great video by the way 💯
I don’t know what “lock the charges” means.
As in keeping the charged pressure inside the capacitor , can it be left in it for a long time without any load
@@user-by9wn6jc2c It depends on what "a long time" means. All energy storage devices bleed energy over time.
Cost? Li battery can get you exactly what you presented at significantly lower cost? Which supercap properties might justify the extra cost? Increased cycle lifetime, I guess would be the main one?
Less loss at low-temperatures and when charging (both due to lower ESR.) And Cycle-count, so less maintience.
Also they are safer. You don't have to worry about over charge problems and burning the house. Or over discharge. The don't have chemicals. Well, they have, but not like the batteries.
They also charge faster than batteries. But of course the ratio charge/volume or cost is not favorable.
if supercap can replace capacitors in PSU, we can replace UPS? For safety shutdown or hibernation mode.
3:31 (and the entire video) covers many of the reasons you cannot just "replace" existing capacitors with EDLCs. You can build a UPS with large supercapacitor modules. But that would be used in very high-power applications, not for a single computer or embedded device.
Hmmm.... you could, but it would cost a whole lot more in energyloss over the lifetime of the ups......
These are a good replacement for devices that have to charge often, think a robotic mower for the garden, or other robotics. Even handtools for a garage. You could charge them quickly when you have to use them without the hassle of a cord when working.
Think devices that have to work a lot, they charge quicker and the "battery" lasts longer. It's a balance of use and lifetime...
@@Peter_Enis In industrial environments, the large modules are popular in forklifts--especially ones that operate in refrigerated warehouses.
@@bald_engineer Thanks for the insight, I learned something from you and exactly what I mean. A device that gets used a lot. From your comment I see they dont suffer as much from the cold as batteries do. A smart solution!
SC = charge quick, drain quick, longer lifetime, needs more power to stay charged
Battery = charge slow, drain slow, shorter lifetime, needs less power to stay charged
Choose wisely 😉
Need more explanation on super capacitor from start
Just out of the curiosity; is this a sponsor driven video or you decide to make a video on supercaps and notify potential sponsors?
Both happens. With this one, it was part of a larger campaign on the element14 Community. I wanted to do the topic but I don't remember how the sponsor was picked.
Sometimes, a sponsor approaches them, and then I come up with a topic based on what they want to feature.
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Thank you so much, sir ❤️ ❤❤❤❤❤
Given E=1/2 * CV^2 it is incorrect to say 'Energy is directly proportional to the voltage'.
Yup.
James, you speak formal English like "pronounced". 😅