Hand-Crank Generator Supercapacitor

thingiverse

The Universal Super Capacitor Power Storage Device draws inspiration from https://www.youtube.com/watch?v=9y4pwcFyLOE. Designed to fit within an aluminum channel measuring 50x100mm in outer dimensions, the device incorporates a geared motor/generator featured in the video. A suitable alternative can be sourced from https://de.aliexpress.com/item/32999256826.html?spm=a2g0o.productlist.0.0.3cd270efGoC0Id&algo_pvid=6ffa10b1-1473-4828-bbdb-7f9dfb2555f4&algo_expid=6ffa10b1-1473-4828-bbdb-7f9dfb2555f4-37&btsid=0ab6fb8815891133313137845e8c50&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_. This alternative option can be had for half the price with a proper search. The device employs the same supercaps and balance board used in the original design. Accommodating an LTC3780 buck boost board https://www.ebay.de/itm/1x-LTC3780-Automatisches-Buck-Boost-Konstantstrom-Leistungsmodul-DC-5-32V/283688502837?hash=item420d270635:g:ZUoAAOSw7bZd3HH~ allows for charging from a wide range of input voltages. The current adjust potentiometer has been externalized to enable adjustment of the charge current, which is crucial for weaker sources. Charging the device up to its full 16.2V via hand crank can be quite an exercise and results in significant heat buildup, making thermal coupling to the enclosure highly recommended. An LCD panel meter was added due to its low power consumption. The device can be charged up to approximately 14V from a nearly empty car battery, enabling jumpstarting of the vehicle. On the input side, an XT60 connector and a 5.5x2.1 DC female jack are featured. On the output side, both XT60 and XT90 connectors are available for even higher discharge currents. The hand crank is attached via an M4 threaded rod.