Battery assembly with kinetic energy-based recharging

摘要

A mobile electronic device configured to recharge when oscillated. The electronic device includes a housing with a battery compartment and a battery assembly positioned within the battery compartment. The battery assembly includes a rechargeable storage battery connected to device's battery contacts. The battery assembly includes a charging assembly connected to the rechargeable storage battery, and the charging assembly provides a kinetic energy-based generator operating during the oscillating motion of the electronic device to output electrical current to the rechargeable storage battery. The generator includes: (a) a barrel; (b) a permanent magnet positioned in an elongated chamber of the barrel and sliding within the chamber during movement of the device; and (c) a coil of conductive wire wrapped around an outer surface of the barrel. The chamber, generator magnet, and barrel outer surface receiving the coil all may be non-circular in cross sectional shape or non-cylindrical to improve kinetic energy harvesting.