Thermal energy harvesting through pyroelectricity
Thermal energy harvesting through pyroelectricity
复制标题
DOI：
10.1016/j.sna.2009.12.018
复制
发表时间：
2010-03-01
影响因子：
4.6
通讯作者：
Ferrari, V.
中科院分区：
文献类型：
--
作者：
Cuadras, A.;Gasulla, M.;Ferrari, V.
基于丝网印刷PZT和商业PVDF薄膜的热释电电池被提出作为热能收集源，以提供低功耗的自主传感器。电池被电建模为与输出阻抗并联的电流源。由气流产生的加热和冷却温度波动被施加到热释电转换器。在300 ~ 360 K温度范围内，在100 s量级的时间内，产生的电流和电荷分别为10（-7）A和10（-5）C量级，与理论模型一致。细胞的平行结合增加了产生的电流。所产生的电流对相关的工艺参数的依赖性也已被表征。最后，来自周期性温度波动的电流被整流并存储在1 μ F负载电容器中。已经实现了高达0.5 mJ的能量，足以在测量和传输周期期间为典型的自主传感器节点供电。(C)2009 Elsevier B. V.保留所有权利。
Pyroelectric cells based on fabricated screen-printed PZT and commercial PVDF films are proposed as thermal energy harvesting sources in order to supply low-power autonomous sensors. The cells are electrically modelled as a current source in parallel with output impedance. Heating and cooling temperature fluctuations generated by air currents were applied to the pyroelectric converters. The generated currents and charges were respectively in the order of 10(-7) A and 10(-5) C for temperature fluctuations from 300 K to 360 K in a time period of the order of 100 s, which agrees with the theoretical model. Parallel association of cells increased the generated current. The dependence of the generated current on relevant technological parameters has been also characterized. Finally, current from cyclic temperature fluctuations was rectified and stored in a 1 mu F load capacitor. Energies up to 0.5 mJ have been achieved, enough to power typical autonomous sensor nodes during a measurement and transmission cycle. (C) 2009 Elsevier B.V. All rights reserved.