Winding Power

I am very grateful for the presence of the eneloop glitter edition in my life. If it were not for this rechargeable set, then I’d be at the store every other day, buying stock for my iMac peripherals! In an alternate situation, I wouldn’t mind giving these Spark Winners, Charge Battery a chance. They’re like the old fashioned winding toys; a few good twists to charge and I’m ready to go. So simple!

Designers: Yeon Kyeong Hwang & Mieong Ho Kang

47 Comments

  • Stephen Russell says:

    Must sell this worldwide, nice, save on batteries alone

  • Stephen Russell says:

    Must sell this worldwide, nice, save on batteries alone

  • engineeringthoughts says:

    How much energy is in a AA battery?

    NiMh, in a AA size have around 2.9Amp hours at 1.2V – that's 3.48 watt hours or 12,528 Joules.

    This concept shows a NiMh roughly 1/3 the size of a traditional AA. So lets say it has 1 watt hour (3600 Joules) of energy. <– Caveat, that's not a standard form factor for a battery (making it very expensive).

    This is an ENORMOUS amount of energy to store in a small spring. Energy stored in a coil spring is .5*k*x*x – a very stiff spring would have a K value of 90lbs/in (takes 90 pounds force to compress/extend by 1 inch)***.

    You would have to compress (or extend) said spring by almost 27 inches (imparting 2430lb of load) to store that much energy.

    It’s fairly unreasonable to expect a human to apply over 2 short tons of push/pull – even 90 pounds is unreasonable.

    Now, I know it’s a twisting action – power springs are more abstract to the layman than the ubiquitous coil spring.

    Even if we used a power spring (the style used in clocks, seat belts, wind up toys, etc.) – it would need to be gigantic and would be equally difficult to “compress” VIA twisting. Clocks, wind up toys, etc. use an incredible small amount of power – this is why such springs are suitable.

    Yes, you don't have to recharge all at once with this concept… But even if we were to go for 1/16th of a full charge – we'd have to impart over 500lbs of force on that very stiff spring. Hopefully, you can see how impractical this is.

    Designers – please stop trivializing power generation! It makes my job (and the jobs of others working in the space of small scale energy conversion) more difficult and fails to manage customer expectation. The internet has a huge amount of resources to do quick feasibility gut checks.


    *** I did the calculation using more traditional units using newtons, meters, etc. pounds (force) and inches are just for reader ease as I feel many readers would not be familiar with the imperial unit of "slug".

  • engineeringthoughts says:

    How much energy is in a AA battery?

    NiMh, in a AA size have around 2.9Amp hours at 1.2V – that's 3.48 watt hours or 12,528 Joules.

    This concept shows a NiMh roughly 1/3 the size of a traditional AA. So lets say it has 1 watt hour (3600 Joules) of energy. <– Caveat, that's not a standard form factor for a battery (making it very expensive).

    This is an ENORMOUS amount of energy to store in a small spring. Energy stored in a coil spring is .5*k*x*x – a very stiff spring would have a K value of 90lbs/in (takes 90 pounds force to compress/extend by 1 inch)***.

    You would have to compress (or extend) said spring by almost 27 inches (imparting 2430lb of load) to store that much energy.

    It’s fairly unreasonable to expect a human to apply over 2 short tons of push/pull – even 90 pounds is unreasonable.

    Now, I know it’s a twisting action – power springs are more abstract to the layman than the ubiquitous coil spring.

    Even if we used a power spring (the style used in clocks, seat belts, wind up toys, etc.) – it would need to be gigantic and would be equally difficult to “compress” VIA twisting. Clocks, wind up toys, etc. use an incredible small amount of power – this is why such springs are suitable.

    Yes, you don't have to recharge all at once with this concept… But even if we were to go for 1/16th of a full charge – we'd have to impart over 500lbs of force on that very stiff spring. Hopefully, you can see how impractical this is.

    Designers – please stop trivializing power generation! It makes my job (and the jobs of others working in the space of small scale energy conversion) more difficult and fails to manage customer expectation. The internet has a huge amount of resources to do quick feasibility gut checks.


    *** I did the calculation using more traditional units using newtons, meters, etc. pounds (force) and inches are just for reader ease as I feel many readers would not be familiar with the imperial unit of “slug”.

  • Dorian Gray says:

    Yeap, nice looking, crappy idea. Dear designers, please attend with your gracious idea of Physics!

  • brazz says:

    What would be interesting, before posting anything on the net, it would first see how far this type of battery is standard or not (is what they have AA geometry, in which case capacity is much less real, or they are much longer and they are compatible avecx almost nothing …). This is not clearly developed.
    On the other hand, more importantly, nowhere has information on the number of turns, spins, it must be laboriously for recherger and if it is a thousand times …
    So a non-typical information, even if it goes around the web, taken by everyone as it should!

  • brazz says:

    What would be interesting, before posting anything on the net, it would first see how far this type of battery is standard or not (is what they have AA geometry, in which case capacity is much less real, or they are much longer and they are compatible avecx almost nothing …). This is not clearly developed.
    On the other hand, more importantly, nowhere has information on the number of turns, spins, it must be laboriously for recherger and if it is a thousand times …
    So a non-typical information, even if it goes around the web, taken by everyone as it should!

  • designer says:

    Why every time when someone posts anything 10 engineers jumps to destroy the idea?
    I want to be able to appreciate a good design and HOPE one of this engineers will start think how to solve problems and come up with ideas, not buried them.

  • engineer says:

    How come every time an engineer takes the time to explain the difficulties of implementation that designers get upset? I would HOPE that one of these designers would be receptive and start doing a little research before posting.

  • engineer says:

    How come every time an engineer takes the time to explain the difficulties of implementation that designers get upset? I would HOPE that one of these designers would be receptive and start doing a little research before posting.

  • Torg Ishere says:

    As a designer I have to agree. Great concept, poor execution. The shear physics behind this type of device make it impractical. However, as far as product design goes… Well done. I would in the future sugest taking an english class as well. I'm not going to trash someones idea because their use of english isnt as refined as others, but it does help when attempting to understand what exactly the product is or does.

  • Torg Ishere says:

    As a designer I have to agree. Great concept, poor execution. The shear physics behind this type of device make it impractical. However, as far as product design goes… Well done. I would in the future sugest taking an english class as well. I'm not going to trash someones idea because their use of english isnt as refined as others, but it does help when attempting to understand what exactly the product is or does.

  • Apothus says:

    The physics of energy storage aside, it appears the actual design requires the device to turn within the battery compartment, mst likely causing damage to the internal contacts and likely unseating itself.There is a reason we no longer see many sprng powered devices.

  • Apothus says:

    The physics of energy storage aside, it appears the actual design requires the device to turn within the battery compartment, mst likely causing damage to the internal contacts and likely unseating itself.There is a reason we no longer see many sprng powered devices.

  • kureta says:

    I have a energy design idea. Since I suck at drawing as much as i suck at physics I will just explain my idea in writing.

    There is a big red button, and when users press it, it discharges an energy equivalent to 75000 H-Bombs, thus eliminating all life on earth (along with the designers who don’t know sh*t about physics).

    It might be cutting off the nose to spite the face but it is a necessary sacrifice. Plus it will solve the energy problem forever.

  • denver says:

    To all designers out there: Troll Physics is not a reliable source for research. Problem?

  • no, really says:

    even if some human would be able to turn the coil it isnt like some feasible solution, you would stand there HOURS turning that little coil for hours, and you would get 1/3 of the results in terms of battery power.

    also lithium ion polymer batterys hold more charge by mass. Did you even research?

    try building some of your batteries and see for yourself, it will just NOT WORK as EXPECTED.
    easier to equip batteries with flexible solar cells.
    (but they will take ages to recharge fully.

  • How about a foot stamp based crank for a very large generator spring? Think spanners, bolts and tyres. This little twisting battery is very small in output.

    Is there something bigger to twist (placed on a pedal mount or full body weight crank) so as to store and release bigger output with a larger spring?

    If you can produce such a product, please contact me for distribution in Malaysia if you haven’t already got an agent here. Thanks and look forward to your response. You can message my FB account with an email.

  • John says:

    Who can up with devices where the battery outlasts the device?
    That actually work of course.

    Designers or engineer’s?

    that one gets my vote.

  • Paul says:

    Designers, design the idea.
    Engineers, make it reality.
    It’s a concept, not a pitch to get it in production.

    If you don’t think greener we never will be.

    I don’t see, in any way, how this would make your life harder? Other than the fact you’ve had to go making lots of calculation, which must have taken time out of your day. V sorry.

  • Paul says:

    ITS A CONCEPT.

    You make a concept then go about seeing how to achieve it.

    Why does every one seem to think ‘a concept’ has to be a possibility now – Do you go to motor shows?

  • I don’t see why everyone seems to be arguing in the comments, I think the design is great. It’s fresh looking!

  • Jimmy C says:

    I like this concept. It would be genuinely refreshing to not have to scrounge around and find I ran out of double As again.

  • Great idea! I wonder if we would see it in the shops soon?

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>