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本文完整推导了无直流偏磁条件下, 磁致伸缩材料和压电材料黏接而得的磁电层状复合材料输出电压、电流、磁电系数表达式, 制备了多个样品并实现了电能无线传输系统. 对样品的测试结果验证了理论分析的正确性. 进一步试验结果表明: 磁电层状复合材料的输出具有倍频特性, 材料长度与谐振频率成反比, 谐振状态下样品可在20 Oe的磁场中输出接近100 V (有效值)开路电压, 样品最大传输功率为520 mW (此为该传输方式下公开报道的最大功率), 功率密度为1.21 W/cm3, 样品最大传输效率达35%, 30°以内的偏转角度对材料的输出无显著影响. 试验结果表明, 基于Metglas/PFC磁电层状复合材料是小体积、 小功率、 对传输效率不甚敏感的电能无线传输应用的一种非常有前景的实现方式.Wireless energy transfer has broad prospective applications. Current researches focus on electromagnetic induction and magnetic resonance. The former approach is sensitive to position and the latter has larger size, both of which affect the broad application of wireless energy transfer. Two layers of magnetostrictive effect materials and one layer of piezoelectric effect material are bound by epoxy resin, which generates magnetoelectric laminated composite. It is the first time that the output voltage, current and magnetoelectric factor have been deduced without DC magnetic bias. Three samples are implemented and the wireless energy transfer system based on them is developed. The tests on the samples verify the correctness of the theoretic analysis. Further experiments illustrate that there are double frequency characteristics for the magnetoelectric laminated composites; the resonant frequency is proportional to the reciprocal of the length of the composite; the open circuit voltage of the composite could reach 100 V (rms) under a magnetic field of 20 Oe; the maximum energy transferred is 520 mW, which is the highest record reported up to now, with the energy density 1.21W/cm3 and maximum transfer efficiency 35%; the rotation less than 30° has little effect on the output of the composites. Theoretical analyses and experimental results suggest that the magnetoelectric laminated composite based on Metglas/PFC is a very interesting approach to small volume and small power wireless energy transfer applications.
[1] Dong S X, Li J F, Viehland D 2003 Appl. Phys. Lett. 83 2265
[2] Nan C W, Bichurin M I, Dong S X, Viehland D, Srinivasan G 2008 J. Appl. Phys. 103 031101
[3] Wen Y M, Wang D, Li P, Chen L, Wu Z Y 2011 Acta Phys. Sin. 60 097506 (in Chinese) [文玉梅, 王东, 李平, 陈蕾, 吴治峄 2011 物理学报 60 097506]
[4] Bao B H, Luo Y 2011 Acta Phys. Sin. 60 017508 (in Chinese) [鲍丙豪, 骆英 2011 物理学报 60 017508]
[5] Bi K, Ai Q W, Yang L, Wu W, Wang Y G 2011 Acta Phys. Sin. 60 057503 (in Chinese) [毕科, 艾迁伟, 杨路, 吴玮, 王寅岗 2011 物理学报 60 057503]
[6] Stewart W 2007 Science 317 55
[7] Casanova J, Zhen N, Lin J 2009 IEEE Trans. Circ. Syst. 56 830
[8] Kurs A, Karalis A, Moffatt R, Joannopoulos J D, Fisher P, Soljacic M 2007 Science 317 83
[9] O'Handley R C, Huang J K, Bono D C, Simom J 2008 IEEE Sens. J 8 57
[10] Li P, Wen Y, Liu P, Li X, Jia C 2010 Sensor Actuat. A-Phys 157 100
[11] Dong S X, Zhai J Y , Li J F, Viehland D 2005 Appl. Phys. Lett. 87 062502
[12] Li P, Huang X, Wen Y M 2012 Acta Phys. Sin. 61 137504 (in Chinese) [李平, 黄娴, 文玉梅 2012 物理学报 61 137504]
[13] Dong S X, Zhai J Y, Li J F, Viehland D 2006 Appl. Phys. Lett. 89 252904
[14] Zhai J, Xing Z, Dong S, Li J, Viehland D 2008 J. Am. Ceram. Soc. 91 351
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[1] Dong S X, Li J F, Viehland D 2003 Appl. Phys. Lett. 83 2265
[2] Nan C W, Bichurin M I, Dong S X, Viehland D, Srinivasan G 2008 J. Appl. Phys. 103 031101
[3] Wen Y M, Wang D, Li P, Chen L, Wu Z Y 2011 Acta Phys. Sin. 60 097506 (in Chinese) [文玉梅, 王东, 李平, 陈蕾, 吴治峄 2011 物理学报 60 097506]
[4] Bao B H, Luo Y 2011 Acta Phys. Sin. 60 017508 (in Chinese) [鲍丙豪, 骆英 2011 物理学报 60 017508]
[5] Bi K, Ai Q W, Yang L, Wu W, Wang Y G 2011 Acta Phys. Sin. 60 057503 (in Chinese) [毕科, 艾迁伟, 杨路, 吴玮, 王寅岗 2011 物理学报 60 057503]
[6] Stewart W 2007 Science 317 55
[7] Casanova J, Zhen N, Lin J 2009 IEEE Trans. Circ. Syst. 56 830
[8] Kurs A, Karalis A, Moffatt R, Joannopoulos J D, Fisher P, Soljacic M 2007 Science 317 83
[9] O'Handley R C, Huang J K, Bono D C, Simom J 2008 IEEE Sens. J 8 57
[10] Li P, Wen Y, Liu P, Li X, Jia C 2010 Sensor Actuat. A-Phys 157 100
[11] Dong S X, Zhai J Y , Li J F, Viehland D 2005 Appl. Phys. Lett. 87 062502
[12] Li P, Huang X, Wen Y M 2012 Acta Phys. Sin. 61 137504 (in Chinese) [李平, 黄娴, 文玉梅 2012 物理学报 61 137504]
[13] Dong S X, Zhai J Y, Li J F, Viehland D 2006 Appl. Phys. Lett. 89 252904
[14] Zhai J, Xing Z, Dong S, Li J, Viehland D 2008 J. Am. Ceram. Soc. 91 351
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