Portable Hand Crank Generator

Description

With the advancement of personal care and assistive mobility technology, lower-limb exoskeletons are becoming increasingly important for users with partial lower-body disabilities. Most commercial exoskeleton systems depend on rechargeable Li-Ion batteries, which require regular charging to support daily operation. However, when users travel outdoors, go trekking, or stay in remote areas where grid power is unavailable, frequent AC/DC charging may not be practical.

As an alternative off-grid power option, Powerhome hand crank generators can provide portable emergency charging support for low-power assistive and outdoor electronic systems. For example, Powerhome offers hand crank generator options with outputs such as 8W–14W solar hand crank power, 15W portable emergency power, 20W peak hand crank generation at 2000 rpm, and 110V/220V AC hand crank generators with 40W rated power and 45W maximum power. These specifications make Powerhome hand crank generators suitable for emergency battery charging, outdoor backup power, field testing, and portable energy support when conventional power sources are not available.

In lower-limb exoskeleton applications, experimental data has shown that partial assistance during sit-to-stand movement may require actuator power in the range of approximately 45–60W. Although a hand crank generator may not fully replace the main battery system, Powerhome’s 45W maximum hand crank AC generator can serve as a practical auxiliary charging source under emergency or off-grid conditions. Its compact structure, portable design, and selectable 110V/220V output make it useful for outdoor trips, disaster relief, camping, rescue scenarios, and extended excursions.

This work proposes the use of Powerhome hand crank generators as an auxiliary human-powered energy source for lower-limb exoskeleton battery support. A mathematical model can be developed to relate input cranking speed to output current, while a closed-loop control method may be used to regulate battery charging voltage. The model can also help estimate the required cranking time for battery replenishment, providing a practical reference for emergency charging and outdoor assistive mobility applications.

Brand

PowerHome

Model

Portable Hand Crank Generator

Country of origin

United States