Heat energy and vibrational energy based composite energy harvesting micro source circuit

Abstract

The invention provides a heat energy and vibrational energy based composite energy harvesting micro source circuit, which comprises a thermal power generation module (1), a vibrational power generation module (2), a shunt-wound interface module (3), an energy instantaneous release module (4) and a voltage regulation module (5), wherein the energy generated by the thermal power generation module (1) and the vibrational power generation module (2) are sent to the shunt-wound interface module (3) where the electrical energy are transitorily stored, then the energy is sent to the voltage regulation module (5) for boosting after the threshold control of the energy instantaneous release module (4); battery powered modules (6) are connected with two ends of a load. The circuit has the advantages that the feeding load is stable in energy, and the service life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of micro energy collection, in particular to a composite energy collection micro power supply circuit based on thermal energy and vibration energy. Background technique [0002] At present, wireless sensor network technology is widely used in environmental monitoring, biomedicine, military activities and residents' life and other fields. Small-sized, low-power wireless sensor nodes are the basic components of wireless sensor networks, but due to the limited energy life of the batteries they carry, they cannot drive wireless sensor nodes for a long time, and frequent battery maintenance greatly increases the cost, even in Some special application scenarios such as structural health detection, medical implantable devices, etc. cannot replace the battery, so the traditional battery power supply has become a bottleneck in the development of wireless sensor network technology, and the weak environmental energy is...

AI Technical Summary

Problems solved by technology

[0006] Due to the constraints of environmental factors and the volume of the energy harvester itself, the total energy collected by the energy harvester from the environment is not high, and the available thermal energy is unstable, and the vibration energy is also random, so it cannot continuously supply energy to the load. , so a single form of energy harvesting method cannot effectively complete the energy supply of sensor nodes under special circumstances, which is unstable

Images