Piezoelectric energy harvesting device of bicycle

Abstract

The invention discloses a piezoelectric energy harvesting device of a bicycle. The device comprises a pedal spindle and a foot rest hub. Bearings sleeve two ends of the pedal spindle respectively. Twoends of the foot rest hub are assembled to the bearings so as to allow the foot rest hub to sleeve the exterior of the pedal spindle. The bearings are arranged between the pedal spindle and the footrest hub. Multiple permanent magnets a or piezoelectric energy harvesting units are adhered to the inner surface of the foot rest hub and the outer surface of the pedal spindle. The permanent magnetsa are not in contact with the piezoelectric energy harvesting units. The permanent magnets a and the piezoelectric energy harvesting units rotate relatively through rotation of the foot rest hub and the pedal spindle. The foot rest hub and the pedal spindle rotate relatively through rotation of the bearings. According to the invention, power can be continuously provided for power consumption elements of the bicycle; stability is high; efficiency is quite high; and riding resistance is not increased.

Description

technical field [0001] The invention belongs to the technical field of self-power supply devices, and in particular relates to a bicycle piezoelectric energy harvesting device that provides electric energy for bicycles. Background technique [0002] With the development of science and technology, the configuration of many components of bicycles tends to be intelligent, especially the dockless shared bicycles that have become popular all over the country recently. The operation of picking up and returning the car has broken the shackles of the previous sharing of bicycles that need to be picked up and returned through the parking pile. [0003] The realization of functions such as GPS positioning of dockless shared bicycles, unlocking and locking of electronic locks, and networking modules requires hardware support. These hardware are generally power-consuming components. In order to ensure the normal operation of dockless shared bicycles, the above power-consuming components...

AI Technical Summary

Problems solved by technology

Today's mainstream power supply methods are generator power generation and photovoltaic solar power generation. However, these two power generation methods have disadvantages. Generator power generation increases the resistance of riding. Photovoltaic solar power generation is greatly affected by environmental factors and is not stable enough.

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