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A wearable piezoelectric electromagnetic composite energy harvesting vibration device

An electromagnetic composite and vibrating device technology, which is applied in the direction of electromechanical devices, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve the problems of large equipment size and inapplicability to the human body

Active Publication Date: 2021-04-27
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above-mentioned energy is converted through vibration. People need to exercise every day. During the exercise, vibration will be generated. Therefore, the vibration during the exercise can also be converted into energy. However, the equipment of the above-mentioned patent is mostly used in machinery or The equipment is bulky and cannot be applied to the human body

Method used

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  • A wearable piezoelectric electromagnetic composite energy harvesting vibration device
  • A wearable piezoelectric electromagnetic composite energy harvesting vibration device
  • A wearable piezoelectric electromagnetic composite energy harvesting vibration device

Examples

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Embodiment Construction

[0019] Such as figure 1 , a wearable piezoelectric-electromagnetic composite energy-harvesting vibration device, comprising a base 1 on one side for wearing on the human body, a pair of support plates 2 correspondingly arranged on both sides of the other side, guide rails 3 arranged between the support plates 2, and guide rails A slide 4 is arranged between the 3, and the slide 4 can slide along the guide rail 3;

[0020] Composite beam 5 of piezoelectric structure, the composite beam 5 can be stretched elastically, the composite beam 5 is set above the base 1 between the guide rails 3, one end of the composite beam 5 is fixedly connected to a support plate 2, and the other end is fixedly connected to one end of the sliding plate 4 ;

[0021] Another support plate 2 is provided with an induction coil 6, the induction coil 6 is located between the guide rails 3, the induction coil 6 is provided with an elastic member 7, one end of the elastic member 7 is fixedly connected to t...

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Abstract

The invention discloses a wearable piezoelectric electromagnetic composite energy-harvesting vibration device. The composite beam adopted can obtain larger stress distribution and larger stress value. The piezoelectric film is used as the piezoelectric material of the composite beam to withstand greater deformation. Thereby generating more electric energy; a cylindrical permanent magnet is fixed at the end of the composite beam, and the permanent magnet can be used as a mass block, which can reduce the resonant frequency of the composite beam and make it more adaptable to low-frequency environments; the permanent magnet can also be used as a It is used as an electromagnetic energy-harvesting vibrator, which produces electromagnetic energy-harvesting effects together with the coil; the coupling effect of piezoelectricity and electromagnetics makes up for the shortcomings of the small output current of the piezoelectric device and the small output voltage of the electromagnetic device, making the output voltage higher. The current is high.

Description

technical field [0001] The invention relates to the field of energy collection, in particular to a wearable piezoelectric electromagnetic composite energy harvesting vibration device. Background technique [0002] In recent years, portable electronic devices, microelectromechanical systems (MEMS) and wireless sensor networks have been widely used in civil, military, medical and industrial production. Most of the current microelectronics are powered by chemical batteries. However, due to the problems of low energy density, regular replacement or charging, and environmental pollution, traditional batteries are difficult to meet the needs of the rapid development of microelectronics products. Harvesting energy from the environment to power microelectronics has become a promising technology that has drawn intense attention from researchers in the past few years. Around our living environment, there are all kinds of waste energy, such as solar energy, pressure energy, vibration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K35/02H02N2/18
CPCH02K35/02H02N2/18H02N2/186H02N2/188
Inventor 江兵朱靖宇谈龙照陈岩俞子豪
Owner NANJING UNIV OF POSTS & TELECOMM
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