A power generation system including a partially enclosed container assembly housing a plurality of spherical balls at a container height disposed above a ground surface, each of the plurality of spherical balls having a ball weight. The power generation system also includes a conveyor assembly with a conveyor-drive system having a plurality of ball-catch members. The conveyor assembly includes a proximal end coupled to the container assembly, a distal end, and a conveyer length separating the proximal and distal ends. The conveyor assembly spans downwardly from the container assembly at a location below the container height and is operably configured, via the ball-catch members of the conveyor-drive system, to transport the spherical balls. A generator is operably coupled to the conveyor-drive system and is operably configured to produce electricity. The power generation system also includes a lift assembly having a lift-drive system spanning from a ball-receiving position to a ball-dispersing position with a height disposed above the ground surface that is greater than the container height. The lift-drive system includes a ball-platform sized to hold the plurality of spherical balls and a platform operably coupled to the lift-drive system that is sized to hold a plurality of users. The platform includes a raised position and a lowered position along a lift translation path. The raised position includes a height disposed above the ground surface that is greater than the container height. Movement of the platform of the lift-drive system along the lift translation path is operably configured to move the ball-platform of the lift-drive system along ball-platform translation path to transport the spherical balls to the ball-dispersing position.

A portable, self-contained rotary generator able to fast-charge electronic devices via a universal serial bus (USB) interface. Human muscle energy, gravitational energy, or a combination of both can be delivered to the generator by a crank whereby input motion is rotary or a wheel whereby input motion is linear. Input motion and its associated energy are modified by a gear ratio connected to a generator which produces electrical power. Power electronics convert the electrical power and deliver it to a connected electric device in accordance with USB fast-charging standards such as USB Power Delivery (USB-PD) or Qualcomm Quick Charge (QC). A removable means of securing the generator to solid objects alleviates the need for two-handed operation, enables embodiments harnessing gravitational energy, and increases the potential power output of all embodiments of the generator.

A portable, self-contained rotary generator able to fast-charge electronic devices via a universal serial bus (USB) interface. Human muscle energy, gravitational energy, or a combination of both can be delivered to the generator by a crank whereby input motion is rotary or a wheel whereby input motion is linear. Input motion and its associated energy are modified by a gear ratio connected to a generator which produces electrical power. Power electronics convert the electrical power and deliver it to a connected electric device in accordance with USB fast-charging standards such as USB Power Delivery (USB-PD) or Qualcomm Quick Charge (QC). A removable means of securing the generator to solid objects alleviates the need for two-handed operation, enables embodiments harnessing gravitational energy, and increases the potential power output of all embodiments of the generator.

A fully integrated triboelectric energy harvesting system can comprise a triboelectric generator, an electrical energy harvesting system, and a power amalgamation circuit. The triboelectric generator can comprise triboelectric materials, conductive contacts, and a mechanical motion transformer.

A fully integrated triboelectric energy harvesting system can comprise a triboelectric generator, an electrical energy harvesting system, and a power amalgamation circuit. The triboelectric generator can comprise triboelectric materials, conductive contacts, and a mechanical motion transformer.

A plural magnet arrangement of a matrix of rows and columns having an altered magnet field alignment of a plurality of the magnets in a matrix comprising rows and columns of magnets in such a manner that there are at times a co-existing combination of changing attractive and repelling magnetic field regions all throughout the coil winding volume, reducing the counter electromotive force (voltage) during electrically connecting a load to the coil winding terminals and extends the time duration of the output voltage waveform and this is accomplished wherein the rotational torque required to rotate the centre magnet through the coil of which it is centred within is reduced.

A passive energy-storage exoskeleton for assisting elbow joint is provided, which includes an upper arm unit, a lower arm unit, and an elbow joint unit located therebetween, the upper arm unit is rotatably connected with the lower arm unit. The elbow joint unit includes an anti-gravity mechanism, a coil spring mechanism, and a lower-arm-unit self-locking mechanism. The anti-gravity mechanism generates an equilibrant moment to eliminate the influence of the weight of the arm of the user and the weight of the device on the elbow joint. The lower-arm-unit self-locking mechanism is configured for locking/releasing the lower arm unit at any specified angle of rotation. The coil spring mechanism is configured for capturing and storing kinetic energy generated by rotation and swing of the arm of the user and releasing the energy as required.

A passive energy-storage exoskeleton for assisting elbow joint is provided, which includes an upper arm unit, a lower arm unit, and an elbow joint unit located therebetween, the upper arm unit is rotatably connected with the lower arm unit. The elbow joint unit includes an anti-gravity mechanism, a coil spring mechanism, and a lower-arm-unit self-locking mechanism. The anti-gravity mechanism generates an equilibrant moment to eliminate the influence of the weight of the arm of the user and the weight of the device on the elbow joint. The lower-arm-unit self-locking mechanism is configured for locking/releasing the lower arm unit at any specified angle of rotation. The coil spring mechanism is configured for capturing and storing kinetic energy generated by rotation and swing of the arm of the user and releasing the energy as required.

Proposed is a portable self-power-generating apparatus which has small size and is capable of charging a battery by realizing self-power generation with high efficiency in emergencies in which normal electricity supply is not available, such as a military operation, a refugee village, a disaster caused by earthquake or the like, an emergency situation on ships, or an outdoor activity, and which can be used in combination with various smart modules.

A mechanical energy harvesting system includes a base seat unit, a rotating shaft device, and a driving device. The base seat unit includes first and second seat bodies. The rotating shaft device is rotatably mounted to the first seat body. The driving device is disposed on the base seat unit and includes at least one driving unit sleeved on the rotating shaft device for driving the rotating shaft device to rotate and thus generate rotational kinetic energy, and at least one transmission unit connected between the second seat body and the driving unit and configured to drive the rotating shaft device to rotate when the second seat body swings relative to the first seat body, so as to generate the rotational kinetic energy.