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wrote...
Valued Member
Posts: 367
3 days ago

https://www.news18.com/news/tech/top-10-power-banks-with-power-price-availability-and-more-1425109.html


Is it possible to design and manufacture Compact Power banks (electrical circuit modification) for Smartphones which are compact similar to a Flash drive in terms of its size?

Thanks & Regards,
Prashant S Akerkar

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wrote...
Valued Member
3 days ago
Thanks.

Reference :

https://circuitdigest.com/electronic-circuits/power-bank-circuit

Attached Power Bank circuit diagram.

Thanks & Regards,
Prashant S Akerkar
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wrote...
Valued Member
3 days ago
Thank you.

The circuit diagram has to be further modified for compactness with the battery construction to achieve the compact design of a Flash drive?

Thanks & Regards,
Prashant S Akerkar
wrote...
Educator
2 days ago
A power bank consists of lithium ions batteries that store current. The more lithium you have, the more current can be stored for later use. The limitation to storing a lot of energy is space; with little space, little is stored (and vice-versa). Hence, it is possible to have a smaller-sized power bank, but I doubt it will be able to charge an iPhone one-fifth of the way.

The iPhone 10 has a battery that's 3,174 mAh (milliAmperes per house). This unit is used to describe the energy charge that a battery will hold and how long a device will run before the battery needs recharging. For a power bank to fully recharge an iPhone, it also needs to be 3,174 or more.

A battery rated for more mAh will power a phone for a longer amount of time, given the same usage pattern. The trade-off is that batteries with more mAh are generally also physically larger and heavier.

More technically, a higher mAh rating means the (fully-charged) battery can power a device that consumes more power and/or for a longer amount of time before becoming depleted and needing to be re-charged. For example, a battery rated at 1500 mAh can power a device drawing 100 milliamps for 15 hours, or a device drawing 150 milliamps for 10 hours.
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wrote...
Valued Member
2 days ago
Thank you.

It is certainly possible to manufacture Compact designed lithium cells in Power banks with the compact electrical circuit ?

I am optimistic.

Thanks & Regards,
Prashant S Akerkar
wrote...
Educator
2 days ago
It is certainly possible to manufacture Compact designed lithium cells in Power banks with the compact electrical circuit ?

Yes, absolutely, it's definitely possible today, but the issue is they'd be useless. Most electronics that operate with rechargeable batteries wouldn't get a full charge from a mini power bank, if one existed.

I once had a power bank rated at 1000 mAh. It barely moved the phone charge a few percents up Undecided
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wrote...
Valued Member
2 days ago Edited: 2 days ago, prashantakerkar
Thanks.

Electrical circuit boards modifications in the power bank can assist in this regard?

Example : Using Microchips with nanotechnology.

https://www.forbes.com/sites/forbestechcouncil/2019/02/28/nanotechnology-how-small-chips-are-creating-a-bigger-brighter-future/


https://www.google.com/search?tbm=isch&source=hp&ei=x3B8XavDLN2-3LUPhqqk8Ak&q=microchips&oq=microchips&gs_l=mobile-gws-wiz-img.12..0l5.1437.6629..7456...0.0..0.149.1274.0j10......0....1.......0.hhXVNLzqaw8

Thanks & Regards,
Prashant S Akerkar
wrote...
Educator
2 days ago
Electrical circuit boards modifications in the power bank can assist in this regard?

Electrical circuits don't contribute to storage.

Look at the battery pack of a Tesla car



Notice the size. Circuitry should be the same in a power bank, but miniaturized, of course.
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wrote...
Valued Member
2 days ago
Thank you.

I mean a compact microchips electrical circuit for Power Bank designed & manufactured using nanotechnology which can take less space leading to compactness similar to a Flash drive.

There could be technical challenges for implementation?

Thanks & Regards,
Prashant S Akerkar
wrote...
Educator
2 days ago
But it's not the microchip that contributes to the size of a power bank, it's the cells themselves.
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wrote...
Valued Member
2 days ago
Thank you.

I mean microchips replacing the existing electrical components in the power bank can reduce the area space of the power bank along with the compact battery cells.

My aim was "Design & Construct Power banks which will be as small as a Flash drive in terms of space".

Thanks & Regards,
Prashant S Akerkar
Answer accepted by topic starter
wrote...
Educator
Top Poster
Posts: 25122
2 days ago
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I see what you mean now. I don't know where the future of batteries is heading. To be honest, I'm not very familiar in this field, but from a few articles I read, they were more concerned about our dependency to lithium than the size of the power bank itself.

Also, I think you should be aware that they're not looking to replace lithium ion either. Most of the technology they're testing involves using nanotechnology to improve how batteries behave:

Batteries: Nanotechnology Applications under Development
Researchers at Rice University are using carbon nanotube films to stop the growth of dendrites on lithium metal anodes. This step may help develop lithium metal batteries, which could have much higher capacity and faster charging than lithium ion batteries.

Researchers at North Carolina State University have demonstrated the use of silicon coated carbon nanotubes for in anodes for Li-ion batteries. They are predicting that the use of silicon can increase the capacity of Li-ion batteries by up to 10 times. However silicon expands during a batteries discharge cycle, which can damage silicon based anodes. By depositing silicon on nanotubes aligned parallel to each other the researchers hope to prevent damage to the anode when the silicon expands.

Researchers at Stanford University and SLAC are developing techniques to surround silicon nanoparticles with graphene cages. The idea is that when the silicon expands and cracks form in the nanoparticles the silicon remains in the graphene cage without degrading the anode.

Read more here: https://www.understandingnano.com/batteries.html
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