A Piezoelectric-Electromagnetic Composite Energy Harvester

Abstract

The invention discloses a piezoelectric-electromagnetic compound energy accumulator and relates to piezoelectric-electromagnetic compound energy accumulator for improving an output power on the environment vibration condition, wherein the energy accumulator belongs to the technical field of the new energy and power generation. The energy accumulator is composed of a shell, coils, an upper permanent magnet, a piezoelectric ceramic material, a base beam, a conical permanent magnet, a lower permanent magnet, an upper electrode, a piezoelectric plate, a lower electrode, a left piezoelectric plate upper electrode lead, and a right piezoelectric plate upper electrode lead. A piezoelectric accumulation part and an electromagnetic accumulation part share the shell, the base beam, an upper permanent magnet, the lower permanent magnet, and the conical permanent magnet. According to the invention, the piezoelectric-electromagnetic compound energy accumulator has advantages of good green and pollution-free performances, large energy density, high reliability and environment adaptability, convenient operation and control, and low maintenance cost and the like. Problems of poor compatibility, low energy density, complex circuit connection, and inconvenient maintenance and the like of the conventional energy process can be solved. The piezoelectric-electromagnetic compound energy accumulator can be applied to energy supplying in a daily living vibration environment and severe environments of underground oil exploration and mining and the like and also can be used as an emergency standby power source.

Description

technical field [0001] The invention relates to a piezoelectric-electromagnetic composite energy harvester, in particular to a piezoelectric-electromagnetic composite energy harvester capable of increasing output power under environmental vibration conditions, and belongs to the technical field of new energy and power generation. Background technique [0002] Currently, known power supply elements are generally chemical batteries. The chemical battery has limited energy storage and needs to be replaced regularly, and the cost of manpower and material resources is high. [0003] The known measurement and control systems all need external power supply, and the external power supply and the sensor must be connected by wires, and the wiring is complicated and convenient; and it cannot be used in an environment without power supply or in an extremely harsh environment (such as the energy supply of an oil drilling drill bit positioning sensor). External power supply. [0004] Vi...

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Problems solved by technology

[0003] The known measurement and control systems all need external power supply, and the external power supply and the sensor must be connected by wires, and the wiring is complicated and convenient; and it cannot be used in an environment without power supply or in an extremely harsh environment (such as the energy supply of an oil drilling drill bit positioning sensor). External power supply

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