Hackaday Prize 2022: Battery Backup
These days, we're all running around with smartphones and laptops that could always use a little more charge. Portable batteries have become popular, and [Anuradha] designed one that holds plenty of juice to keep everything buzzing.
The pack is designed to be charged via solar panels, at 18 V and up to 5 A of current. It is intended to work with a maximum power point tracking module to ensure that the maximum energy is drawn from the sun available. For storage, the pack relies on 75 individual 18650 lithium cells, arranged with 3 cells in series, each with 25 in parallel (3s25p). They are spot welded together for added strength and good conductivity. Nominally the output voltage is in the range of 10-12V. The included Battery Management System (BMS) will allow output current up to 100A, and the pack can be used with an AC inverter to power ordinary household appliances.< /p>
All in all, it's a tidy pack that's more than capable of keeping a few devices charged for days at a time. If you build something similar yourself, just be sure to pack it well and protect it. So many lithium batteries can quickly get hot if something goes wrong, so store and use them appropriately! Fear not, though, we have a guide on how to do it.
These days, we're all running around with smartphones and laptops that could always use a little more charge. Portable batteries have become popular, and [Anuradha] designed one that holds plenty of juice to keep everything buzzing.
The pack is designed to be charged via solar panels, at 18 V and up to 5 A of current. It is intended to work with a maximum power point tracking module to ensure that the maximum energy is drawn from the sun available. For storage, the pack relies on 75 individual 18650 lithium cells, arranged with 3 cells in series, each with 25 in parallel (3s25p). They are spot welded together for added strength and good conductivity. Nominally the output voltage is in the range of 10-12V. The included Battery Management System (BMS) will allow output current up to 100A, and the pack can be used with an AC inverter to power ordinary household appliances.< /p>
All in all, it's a tidy pack that's more than capable of keeping a few devices charged for days at a time. If you build something similar yourself, just be sure to pack it well and protect it. So many lithium batteries can quickly get hot if something goes wrong, so store and use them appropriately! Fear not, though, we have a guide on how to do it.
What's Your Reaction?
