An implementation of the wireless power transfer by the laser technology

Chu, Hong-juan; Wang, Chengmin

doi:10.1117/12.2592164

Cited by 2 publications

(1 citation statement)

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“…[52] Lately, laser WET is being combined with photovoltaic cells to power devices at long distances, specifically for space exploration. [53,54] The use of a laser beam over the conventional solar radiation allows the remote illumination of the photovoltaic cells when the solar exposition is insufficient, thus reducing the reliance on energy storage. [55] Another method to take advantage of the high power of a laser beam, besides the photoelectric effect, is related to the concept of EH, particularly the thermoelectric effect, that could be appealing for the laser beam WET systems because it can convert the heat load caused by the incidence of the light into electrical energy.…”

Section: Introductionmentioning

confidence: 99%

A Photo‐Thermoelectric Twist to Wireless Energy Transfer: Radial Flexible Thermoelectric Device Powered by a High‐Power Laser Beam

Rocha

Robalinho

Califórnia

et al. 2023

Adv Materials Technologies

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Systems for wireless energy transmission (WET) are gaining prominence nowadays. This work presents a WET system based on the photo‐thermoelectric effect. With an incident laser beam at λ = 1450 nm, a temperature gradient is generated in the radial flexible thermoelectric (TE) device, with a carbon‐based light collector in its center to enhance the photoheating. The three‐part prototype presents a unique approach by using a radial TE device with one simple manufacturing process ‐ screen‐printing. A TE ink with a polymeric matrix of poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate and doped‐Poly(vinyl alcohol) with Sb‐Bi‐Te microparticles is developed (S∽33 µVK−1 and s∽10.31 Sm−1), presenting mechanical and electrical stability. Regarding the device, a full electrical analysis is performed, and the influence of the light collector is investigated using thermal tests, spectrophotometry, and numerical simulations. A maximum output voltage (Vout) of ∽16 mV and maximum power density of ∽25 µWm−2 are achieved with Plaser = 2 W. Moreover, the device's viability under extreme conditions is explored. At T∽180 K, a 25% increase in Vout compared to room‐temperature conditions is achieved, and at low pressures (∽10‒6 Torr), an increase of 230% is obtained. Overall, this prototype allows the supply of energy at long distances and remote places, especially for space exploration.

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Section: Introductionmentioning

confidence: 99%

A Photo‐Thermoelectric Twist to Wireless Energy Transfer: Radial Flexible Thermoelectric Device Powered by a High‐Power Laser Beam

Rocha

Robalinho

Califórnia

et al. 2023

Adv Materials Technologies

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Laser wireless power transmission based on spherical reflector intra-cavity beam splitting

Xu,

Yang,

Zheng

et al. 2024

Appl. Opt.

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The powersphere is an energy reception device in a laser wireless power transmission system, converting light into electricity, and also has a certain effect of light uniformity. However, in the actual application process, limitations due to laser power, photovoltaic cell absorption rate, and direct irradiation area restrict light uniformity, thus reducing photoelectric conversion efficiency. A spherical reflector at the center of the powersphere to enhance internal reflection and improve light uniformity was proposed. Utilizing LightTools software, we established a simulation model to simulate the energy distribution of light on the powersphere after reflection by the sphere, analyzing light uniformity and constructing an experimental platform for validation. Results show the reflector significantly boosts uniformity, doubling the powersphere’s output power and reducing voltage and current disparities, thereby enhancing system conversion efficiency.

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An implementation of the wireless power transfer by the laser technology

Cited by 2 publications

References 0 publications

A Photo‐Thermoelectric Twist to Wireless Energy Transfer: Radial Flexible Thermoelectric Device Powered by a High‐Power Laser Beam

A Photo‐Thermoelectric Twist to Wireless Energy Transfer: Radial Flexible Thermoelectric Device Powered by a High‐Power Laser Beam

Laser wireless power transmission based on spherical reflector intra-cavity beam splitting

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