压电陶瓷能量转换系统.pdfVIP

第38卷 第 2期 吉 林 大 学 学报 (工 学 版 ) Vol_38 No．2 2OO8年3月 Journal of Jilin University(Engineering and Technology Edition) Mar．2008 压电陶瓷能量转换系统 闫世伟，杨志刚，阚君武，程光明，曾 平 (吉林大学机械科学与工程学院，吉林 长春 130022) 摘 要：为实现利用压电材料收集人体能量，将其转化成电能在某些特殊应用领域替代电池或 自动为电池充电的目的，设计了一个能量转换系统，该系统由压电发电装置和存储与控制电路 组成。通过试验的方法研究了压电振子在结构参数、支撑方式等多种因素影响下的发电特性， 根据试验取得的优化参数和工作方案设计了压电发电装置，并尝试利用其为无线遥控器供电。 经过试验测试，压电发电装置在外接100 kQ负载时最大输出功率为58．2 mW，连接存储与控 制电路时可满足无线遥控器(以开关无线遥控器为例)的使用要求，信号传输距离达到10 m 以上。 关键词：机械设计；压电陶瓷；压电发电装置；能量储存；驱动 中图分类号：TH132；TN384 文献标识码：A 文章编号：1671—5497(2008)02—0344—05 Energy conversion system with piezoelectric ceramic Yan Shi—wei。Yang Zhi—gang，Kan J un—wu，Cheng Guang—ming，Zeng Ping (College of Mechanical Science and Engineering，Jilin University，Changchun 130022，China) Abstract：An energy conversion system consisting of a piezoelectric generator a circuit of storage and control was developed to convert the human—body energy into electrical energy by means of the piezoelectric ceramic to substitute or charge automatically the battery under special conditions．The effects of the structure parameters and the supporting mode of the piezoelectric oscillator on its electrical energy generation performance were investigated experimentally．A piezoelectric generator was designed according to the experimentally optimized parameters and working mode and it was attempted to power a wireless remote controller．The measurement shows that the maximal power output of the piezoelectric generator is 58．2 mW with a 100 kQ load．The piezoelectric generator with the circuit of storage and control system can transmit the signal to the distance of up to 10 m， satisfying the need of the wireless remote controller operation． Key words：mechanical design；piezoelectric ceramic；piezoelectric generator；ener