Bridge shadow type bituminous pavement energy gathering device

An energy harvesting, asphalt pavement technology, applied in electrical energy storage systems, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc. Energy harvesting requirements and other issues, to achieve the effect of good coupling and high energy conversion efficiency

Active Publication Date: 2013-04-24
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, through relevant research, it is found that the existing piezoelectric transducers either have insufficient stiffness, low energy conversion efficiency, or low energy transmission coefficient, that is, they cannot meet the requirements of road energy harvesting at the same time.

Method used

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  • Bridge shadow type bituminous pavement energy gathering device
  • Bridge shadow type bituminous pavement energy gathering device
  • Bridge shadow type bituminous pavement energy gathering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Bridge Shadow Asphalt Pavement Energy Harvesting System:

[0082] Figure 6 Shown is the circuit diagram of the bridge shadow energy harvesting system for asphalt pavement. Wherein the output circuit comprises a rectifier circuit 21, a filter circuit 22 and a voltage stabilizing circuit 23, and a plurality of bridge shadow type asphalt pavement energy harvesting devices 7 are connected in parallel on the rectifier circuit 21, the rectifier circuit 21 is electrically connected with the filter circuit 22, and the filter circuit 22 It is electrically connected with the voltage stabilizing circuit 23, and the voltage stabilizing circuit 23 is electrically connected with the energy storage device 13, and the energy storage device 13 is a supercapacitor with a breakdown voltage greater than 150V. Among them, an NPN transistor 11 , a voltage stabilizing diode 12 , and a current limiting resistor 10 are used to form a voltage stabilizing circuit 23 .

[0083] In the voltage s...

Embodiment 2

[0087] Test the effect of the device on a two-lane first-class asphalt road with an average daily traffic flow of 15,000 vehicles. The test laying length is 1,000 meters, according to Figure 7 The paving method is laid on an asphalt road with a length of 1000 meters. The bridge shadow type asphalt pavement energy harvester is buried in the asphalt pavement surface layer, and the energy harvesting device loaded with the trapezoidal bridge shadow type piezoelectric transducer is buried between the upper layer and the middle layer with a depth of 4 cm. The energy harvesting device of the arc-shaped bridge-shadow piezoelectric transducer is embedded between the middle layer and the lower layer, and the embedded depth is 15cm. The bridge shadow type asphalt pavement energy harvesting device is buried along the direction of the wheel tracks, such as Figure 7 As shown, the distance between each device is 20cm.

[0088] The dimensions of the trapezoidal bridge shadow piezoelectric...

Embodiment 3

[0093] Test the effect of the device on a two-lane first-class asphalt road with an average daily traffic flow of 10,000 vehicles. The test laying length is 1,000 meters, according to Figure 7 The paving method is laid on an asphalt road with a length of 1000 meters. The bridge shadow type asphalt pavement energy harvester is buried in the asphalt pavement surface layer, and the energy harvesting device loaded with the trapezoidal bridge shadow type piezoelectric transducer is buried between the upper layer and the middle layer, two layers are buried, and the buried depth is 4cm and 8cm, and the energy harvesting device loaded with arc-shaped bridge-shadow piezoelectric transducers is buried between the middle surface layer and the lower layer, and two layers are buried at a depth of 15cm and 20cm. The bridge shadow type asphalt pavement energy harvesting device is buried along the direction of the wheel tracks, such as Figure 7 As shown, the distance between each device is...

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PUM

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Abstract

The invention relates to a new energy gathering and transforming device, in particular to an energy gathering device used for bituminous concrete pavement and provides a bridge shadow type bituminous pavement energy gathering device which comprises a packaging layer and a plurality of bridge shadow type piezoelectric transducers. The bridge shadow type piezoelectric transducers are arranged in the packaging layer. The bridge shadow type piezoelectric transducers comprise piezoelectric ceramic piece bodies. Upper surface end cap metal sheets and lower surface end cap metal sheets are respectively coated on the upper surfaces and the lower surfaces of the piezoelectric ceramic piece bodies. The upper surface end cap metal sheets and lower surface end cap metal sheets are matched with the belonging piezoelectric ceramic piece bodies in shape. The end cap metal sheets adopt a bridge shadow type structure and phosphor bronze materials, and enable the piezoelectric transducers to bear impact of ordinary driving vehicle loading without being damaged. The piezoelectric materials adopt piezoelectric transducer (PZT)-5H piezoelectric ceramics which has a high piezoelectric strain constant and piezoelectric voltage constant, and enables the bridge shadow type bituminous pavement energy gathering device to have high energy exchange efficiency.

Description

technical field [0001] The invention relates to a new energy collection and conversion equipment, in particular to an energy collection device for asphalt concrete pavement. Background technique [0002] Under the action of traffic load on asphalt concrete pavement, mechanical energy will be generated in the pavement. Taking a 6-wheeled truck as an example, it can generate about 1J of mechanical energy when it passes through the asphalt road once. This energy is finally converted into the internal energy of the road surface and increases the risk of damage such as rutting on the road surface. Within the design life of the road, the interior of the road surface has to withstand hundreds of thousands to hundreds of millions of repeated axle loads, which is a huge load for the road surface, but it is also a kind of energy that can be converted and utilized. Mechanical energy. [0003] The mechanical energy of asphalt concrete pavement can be converted and collected by using t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18H02J15/00
Inventor 凌建明杨戈赵鸿铎陶宇杰姚羚孙轶凡覃路遥
Owner TONGJI UNIV
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