基于放电齿开关的自供电摩擦纳米发电机能量管理电路

Self-powered energy management circuit of triboelectric nanogenerators based on discharge teeth switch

基于摩擦起电和静电感应耦合的摩擦纳米发电机(TENG)是一种清洁、可持续的能源技术,但由于其输出具有高电压、低电流特点,限制了其的广泛应用。为提高TENG对传统电子设备的供电效率,提出一个基于气体放电开关与变压器的自供电电源管理电路。该实验利用印刷电路板(PCB)技术制造的放电齿克服了手工制作火花开关的缺点,能够精准控制放电间距,具有更稳定、体积更小等优点,使电源管理电路实现了高度集成化。实验结果表明,该电源管理电路具有优秀的输出性能,在0.6 Hz超低工作频率下,能在60 s内将220μF的电容充电至9.21 V,即存储了9.33 mJ能量,是直接方式的9.5倍。最后,将TENG与此电源管理电路相结合实现了为小型电子设备的高效供电,促进了TENG的实际应用。

Triboelectric nanogenerators(TENG)are a sustainable and clean energy technology that utilizes frictional electrification and electrostatic induction coupling.However,its output has the characteristics of high voltage and low current,which limits its wide application.In order to improve the power supply efficiency of TENG to traditional electronic equipment,a self-powered power management circuit based on gas discharge switch and transformer is proposed.In this experiment,the discharge teeth manufactured by printed circuit board(PCB)technology overcome the shortcomings of hand-made spark switches,and can accurately control the discharge spacing.It has the advantages of more stability and smaller volume,and makes the power management circuit highly integrated.The experimental results show that the power management circuit has excellent output performance.Under the ultra-low operating frequency of 0.6 Hz,the 220 uF capacitor can be charged to 9.21 V within 60 s,that is,9.33 mJ energy is stored,which is 9.5 times that of the direct way.Finally,the TENG is combined with the power management circuit to achieve efficient power supply for small electronic devices,which promotes the practical application of TENG.