Composite energy collector and wearable electronic equipment

Abstract

The invention discloses a composite energy collector and wearable electronic equipment. The composite energy collector comprises an upper main body and a lower main body, wherein the upper main body and the lower main body are oppositely arranged and spaced to form a cavity; the upper main body sequentially comprises a magnet, an upper electrode and a friction film from top to bottom; the lower main body sequentially comprises a middle electrode, a piezoelectric film, an insulating layer with an induction coil and a lower electrode from top to bottom; and the upper main body and the lower mainbody are in mutual contact friction under external force extrusion. The invention provides a power generation system with three coupling modes of piezoelectricity, friction and electromagnetism, complementary advantages of the three power generation modes are achieved, high voltage and current signals can be output, and the problems that a traditional single power generation mode is small in output power and not easy to use by wearable electronic devices for a human body are solved; and moreover, the composite energy collector is simple in structure, is easy to manufacture, is low in cost, iseasy to miniaturize, is more stable, is more convenient for a wearable electronic device of the human body to use, and also solves problems that a conventional composite generator is complex in structure, is high in manufacturing cost, and is poor in practical stability.

Description

technical field [0001] The invention relates to the technical field of energy conversion devices, and relates to a friction-piezoelectric-electromagnetic composite energy harvester that can adapt to external extrusion. Background technique [0002] With the increasing trend of energy cleanliness and high efficiency, the research work on new energy harvesting devices has made great progress in recent years. On the macro level, the normal operation of society and people's daily life depend on the electricity generated and delivered by conventional or new energy sources; on the micro level, personal electronic products, implanted biosensors, micro-electromechanical systems, environmental Monitoring sensors even as small as nanorobots, micromotors, etc. require independent and persistent energy supply devices to provide power. [0003] At present, mechanical energy is converted into electrical energy, including electromagnetic induction, electrostatic induction, piezoelectric e...

AI Technical Summary

Problems solved by technology

However, there are still problems such as complex structure, difficult manufacture, high cost and difficulty in practical application.

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