Wireless Charging Device Research Articles

A Novel Portable Solar Powered Wireless Charging Device

This paper presents the development of a portable solar panel wireless charging device with an advanced charging algorithm. The device features a 6500 mAh Li-ion battery and is designed to efficiently charge smartphones and laptops. It incorporates a simulated solar panel, charging circuit, microcontroller, and wireless charging circuits. Rigorous testing has demonstrated its stable output voltage and current at 5 V/2 A, with high power transfer efficiency. The advanced charging algorithm optimizes power transfer efficiency and reduces charging time by adjusting the current and voltage to match the device’s needs. This smart approach extends battery life and improves device performance. The device utilizes the Basic MPPT P&O Algorithm to dynamically track the solar panel’s Maximum Power Point and optimize power extraction. The Lithium Battery Charging Characteristic Algorithm adjusts the charging levels to ensure safe and efficient charging. However, challenges were encountered during implementation and testing, highlighting the complexities of real-world scenarios and the need for further optimization. The device offers a sustainable and environmentally friendly charging alternative, particularly in areas with limited power access. The research findings contribute to the field of wireless charging, driving advancements in sustainable and efficient technologies.

Non‐contact and anti‐interference diagnosis of SiC MOSFET module bond wire faults for EV wireless charging device

AbstractSiC MOSFET modules are widely used for bidirectional wireless charging of electric vehicles. However, prolonged use can result in bond wire faults, leading to reliability issues. To address this problem, a non‐contact bond wire monitoring method that can be carried out using the charging coil of the wireless charging device is proposed. Here, two monitoring loops are constructed based on the circuit topology, and their impedance magnitudes are measured on the charging coil to avoid the influence of battery voltage on monitoring results. To detect the bond wire condition, the impedance magnitude difference of the two monitoring loops is chosen as an indicator, which is very sensitive to the bond wire lift‐off. However, the monitoring results may be influenced by the aging of resonant capacitors and the offset of the charging coil. In particular, the influence of the coil offset is significant. To mitigate this effect, a prognostic parameter calibration method is proposed. Experimental results confirm the effectiveness of the proposed method, which provides a promising solution for the reliable and safe operation of SiC MOSFET modules in wireless charging devices.

КОМП’ЮТЕРНЕ МОДЕЛЮВАННЯ ТА ДОСЛІДЖЕННЯ ЕНЕРГОЕФЕКТИВНОСТІ ПРОЦЕСІВ ЗАРЯДЖАННЯ АКУМУЛЯТОРНОЇ БАТАРЕЇ ЕЛЕКТРОМОБІЛЯ ВІД БЕЗДРОТОВОГО ЗАРЯДНОГО ПРИСТРОЮ

In the paper, based on the method of computer simulation, the process of charging a lithium-ion battery for an electric car from a wireless charger of the inductive-resonance type was investigated. It is shown that when modeling this process, it is necessary to take into account the simultaneous flow of two processes of different scales in time and interconnected - a short-term high-frequency process in the inverter of the charger with a characteristic time of 10-5 s and a long-term process of charging the battery with a characteristic time of 104 s. Direct numerical calculation of these two processes simultaneously requires significant computer resources. To solve this problem, a new approach is proposed and implemented in the Matlab/Simulink package, according to which, at the first stage, when calculating high-frequency processes in the inverter, there are modified Thevenin and Norton equivalents for a wireless charging device, taking into account the total internal losses in this device, and at in the second stage, the long-term battery charging process is calculated first in the mode of a constant current source, using the constructed Norton equivalent, and then in the mode of a constant voltage source, using the constructed Thevenin equivalent. This approach makes it possible to take into account interrelated and time-varying processes in the inverter and in the battery and to investigate the efficiency of wireless transmission of electrical energy from a stationary power source to a battery located on board an electric vehicle. According to the results of the calculations, it is shown that for the developed device, the integral efficiency of the entire battery charging process when the battery parameter increases from 20% to 95% is 86%. References 9, figures 8.

On-Demand Charging Management Model and Its Optimization for Wireless Renewable Sensor Networks.

Nowadays, wireless energy transfer (WET) is a new strategy that has the potential to essentially resolve energy and lifespan issues in a wireless sensor network (WSN). We investigate the process of a wireless energy transfer-based wireless sensor network via a wireless mobile charging device (WMCD) and develop a periodic charging scheme to keep the network operative. This paper aims to reduce the overall system energy consumption and total distance traveled, and increase the ratio of charging device vacation time. We propose an energy renewable management system based on particle swarm optimization (ERMS-PSO) to achieve energy savings based on an investigation of the total energy consumption. In this new strategy, we introduce two sets of energies called emin (minimum energy level) and ethresh (threshold energy level). When the first node reaches the emin, it will inform the base station, which will calculate all nodes that fall under ethresh and send a WMCD to charge them in one cycle. These settled energy levels help to manage when a sensor node needs to be charged before reaching the general minimum energy in the node and will help the network to operate for a long time without failing. In contrast to previous schemes in which the wireless mobile charging device visited and charged all nodes for each cycle, in our strategy, the charging device should visit only a few nodes that use more energy than others. Mathematical outcomes demonstrate that our proposed strategy can considerably reduce the total energy consumption and distance traveled by the charging device and increase its vacation time ratio while retaining performance, and ERMS-PSO is more practical for real-world networks because it can keep the network operational with less complexity than other schemes.

Increase the Efficiency of IoT Devices by Using the Wireless Power Transmission in the Industrial Revolution 4.0

<p>Today's world is evolving toward creating a smart house where a multitude of Internet Of Things (IoT) devices and sensors are interacting to deliver plenty of useful information. Essential to the implementation of this IoT is the design of energy-efficient solutions aiming toward a low-carbon-emission, namely green, society. Many R\&D studies are working on a long-range distance wireless charging that will send microwave energy to powered IoT devices wherever it is in the room and without cords. Wireless power transmission technology is the diffusion of RF power without using any physical support. The vision of future technology is to make the IoT devices charging and powered wirelessly. The objective of the work scope is to combine the wireless power technology with smart IoT and IIoT devices and reduce the turnoff of devices due to battery depletion. In this research paper, we designed and realized a wireless charging device using the fundamentals of microwave radiation. The proposed electronic device takes all parameters above to deliver sufficient energy to charging any IoT devices wirelessly with a maximum power of 5W.</p>

Research on Liquid Cooling Technology and its Application in Wireless Charging

With the increasing thermal density and the limited installation space of wireless charging device, there are higher requirements for the external dimension and heat dissipation performance of wireless charging device. In order to improve the cooling efficiency of wireless charging device, combined with the disadvantages of traditional wireless charging device and air-cooled wireless charging device, the positive influence and Prospect of liquid cooling technology in wireless charging device are studied.

Design and analysis of wireless power transmission devices for multi-degree-of-freedom actuator applications

ABSTRACT The multi-degree-of-freedom actuator is commonly used in the field of bionics, and a wireless transmission device with visual image acquisition devices is the best choice for the power transmission. For the wireless power transmission system, to offset the problem of reduced power and efficiency at the receiving end, this paper designs a wireless charging device for this kind of multi-degree-of-freedom actuator application. The S 21 parameters, magnetic flux density, and efficiency of the wireless charging device under different rotation angles are calculated and simulated by finite element analysis. Finally, the accuracy of the simulation and the effectiveness of power transmission are verified by experiments.

Design and Implementation of a Wireless Charging-Based Cardiac Monitoring System Focused on Temperature Reduction and Robust Power Transfer Efficiency

Wireless power transfer systems are increasingly used as a means of charging implantable medical devices. However, the heat or thermal radiation from the wireless power transfer system can be harmful to biological tissue. In this research, we designed and implemented a wireless power transfer system-based implantable medical device with low thermal radiation, achieving 44.5% coil-to-coil efficiency. To suppress thermal radiation from the transmitting coil during charging, we minimized the ESR value of the transmitting coil. To increase power transfer efficiency, a ferrite film was applied on the receiving part. Based on analyses, we fabricated a cardiac monitoring system with dimensions of 17 × 24 × 8 mm3 and implanted it in a rat. We confirmed that the temperature of the wireless charging device increased by only 2 °C during the 70 min charging, which makes it safe enough to use as an implantable medical device charging system.

Design of Resonant Wireless Charging Device for Public Electric Bicycle

As a starting point for the difficulty of charging public electric bicycles, this paper proposed a convenient and efficient charging device design concept, namely the design of resonant wireless charging device applied to public electric bicycles. Firstly, the main wireless charging technology on the market is introduced. Secondly, the design of the resonant wireless charging device is analysed including the charging principle, main circuit design and its advantages. The device supply power in centimeters or meters, even if there are obstacles in the charging range, energy can be efficiently transmitted, and it can be applied to the public electric bicycle parking hall, which can effectively solve the problem of difficult charging.

Optimal Wireless Charging Inclusive of Intellectual Routing Based on SARSA Learning in Renewable Wireless Sensor Networks

The next generation’s sensor nodes will be more intelligent, energy conservative, and perpetual lifetime in the set-up of wireless sensor networks (WSNs). These sensors nodes are facing the overwhelming challenge of energy consumption which gradually decreases the lifetime of overall network. The wireless power transfer (WPT) is one of the most emerging technologies of energy harvesting that deploys at the heart of sensor nodes for efficient lifetime solution. A wireless portable charging device (WPCD) is drifting inside the WSN to recharge all the nodes which are questing for the eternal life. In this paper, we aspire to optimize a multi-objective function for charging trail of WPCD, and self-learning algorithm for data routing jointly. We formulated that the objective functions can optimize the fair energy consumption as well as maximize the routing efficiency of WPCD. The fundamental challenge of the problem is, to integrate the novel path for WPCD by applying the Nodal A* algorithm. We proposed a novel method of sensor node’s training for intellectual data transmission by using of clustering and reinforcement learning (SARSA) defined as clustering SARSA (C-SARSA) along with an optimal solution of objective functions. The whole mechanism outperforms in terms of trade-off between energy consumption and stability (fair energy consumption among all nodes) of the WSN; moreover, it prolongs the lifetime of the WSN. The simulated results demonstrate that our proposed method did better than compared literature in terms of energy consumption, stability, and lifetime of the WSN.

Test methods for integrated experimental prototypes of wireless charging of implants’ power supply sources and implantable biotelemetric system

This article discusses the well-known inductive wireless power transfer for implantable devices. These devices are intended for use in the area of medicine, pharmacology and human physiology. Implantable small-sized devices are introduced into the body surgically and autonomously monitor and control the functional state of individual organs and systems. However, the currently existing implantable devices must be periodically removed from the body of the object of observation to replace the source of energy, and then reinstall into the body. Developed by the authors wireless charger for transcutaneous energy supply of implantable modules automatically adjusts the power of the electromagnetic field. It gives the possibility to use either non-rechargeable power sources or batteries charged via wireless power transmission. The integration scheme of experimental prototypes of wireless charging device and implantable biotelemetric system is considered. The methodology of three consistent tests of integrated charging device and implantable biotelemetric system is discussed. The tests’ results verified the compliance of the specified parameters with the requirements of the technical specification.

Topology Optimization of Magnetic Cores for EV Wireless Charging Device

Topology Optimization of Magnetic Cores for EV Wireless Charging Device

Energy-Aware Adaptive Weighted Grid Clustering Algorithm for Renewable Wireless Sensor Networks

Wireless sensor networks (WSNs), built from many battery-operated sensor nodes are distributed in the environment for monitoring and data acquisition. Subsequent to the deployment of sensor nodes, the most challenging and daunting task is to enhance the energy resources for the lifetime performance of the entire WSN. In this study, we have attempted an approach based on the shortest path algorithm and grid clustering to save and renew power in a way that minimizes energy consumption and prolongs the overall network lifetime of WSNs. Initially, a wireless portable charging device (WPCD) is assumed which periodically travels on our proposed routing path among the nodes of the WSN to decrease their charge cycle time and recharge them with the help of wireless power transfer (WPT). Further, a scheduling scheme is proposed which creates clusters of WSNs. These clusters elect a cluster head among them based on the residual energy, buffer size, and distance of the head from each node of the cluster. The cluster head performs all data routing duties for all its member nodes to conserve the energy supposed to be consumed by member nodes. Furthermore, we compare our technique with the available literature by simulation, and the results showed a significant increase in the vacation time of the nodes of WSNs.

무선 충전 가능한 블루투스 방식의 체내 음향신호 전송용 이식형 바이오 텔레메트리 시스템 구현

It is necessary to develop small, implantable bio-telemetry systems which can measure and transmit patients' bio-signals from internal body to external receiver. When measuring bio-signals, like electrical bio-signals, acoustic bio-signal measurement has also a big clinical usefulness. But, sound signal has larger frequency bandwidth than any other bio-signals. When considering these issues, a wireless telemetry system which has rapid data transmission rate proportional to wide frequency bandwidth is necessary to be developed. The bluetooth module is used to overcome the data rate limitation caused by the large frequency bandwidth. In this paper, a novel multimedia bluetooth biotelemetry system was developed which consists of transmitter module located in the body and receiver device located outside of the body. The transmitter consists of microphone, bluetooth, and wireless charging device. And the receiver consists of bluetooth and codec system. The sound inside the skin is captured by microphone and sent to receiver by bluetooth while charging. The wireless charging system constantly supplies the electric power to the system. To verify the performance of the developed system, an in vitro experiment has been performed. The results show that the proposed biotelemetry system has ability to acquire the sound signals under the skin.

Car Wireless Charging Device

this device designed a wireless power supply based on IAP15F2K61S2 single-chip microcomputer control device, the device using the theory of electromagnetic resonance to simulate future wireless charging way; Is application of a wireless power supply technology in an attempt to relieve the energy crisis. System to IAP15F2K61S2 microcontroller as the control core, high power wireless transmission is realized by using xkt409 electricity. Charging status can be displayed on the LCD screen, wireless charging model to simulate the future car.