Solar-powered wireless charging station for electric vehicles with battery management system

Abstract

Battery management device (100) for a solar-powered wireless electric vehicle, wherein the battery management (100) comprises: at least one photovoltaic module (102) configured in such a way that that it generates electrical energy from solar radiation; an inductive charging pad (104) embedded in a floor surface and comprising a transmitting coil configured to wirelessly transmit energy to an electric vehicle; a battery monitoring unit (106) configured to monitor the charging of a rechargeable battery pack and controls; an energy management unit (108) configured to distribute charging power to a large number of electric vehicles based on charging demand; and a smart grid interface (110) configured to integrate the system into an external power grid, the system (100) is adapted to wirelessly charge multiple electric vehicles using renewable solar energy.

Description

AREA

[0001] The present disclosure relates generally to a solar-powered wireless charging station for electric vehicles with a battery management system. GENERAL STATE OF THE ART

[0002] Conventional electric vehicle (EV) charging systems rely heavily on cable connections with standardized connectors and grid-based power, limiting user-friendliness, scalability, and the use of renewable energy. While fast-charging technologies reduce charging time, they often strain the grid infrastructure. Photovoltaic systems provide clean energy but are rarely effectively integrated into EV charging stations. Wireless power transfer technologies such as inductive coupling enable wireless charging but face challenges in terms of efficiency and deployment. Battery management systems ensure safe battery operation but are typically vehicle-centric. Although smart grid technologies enable energy optimization, an integrated, renewable-powered, wireless EV charging solution remains elusive. SUMMARY

[0003] The subject matter of the present invention is defined in the claims. BRIEF DESCRIPTION OF THE FIGURES Fig. Figure 1 illustrates a solar-powered wireless charging station for electric vehicles with a battery management system. DETAILED DESCRIPTION OF THE INVENTION

[0004] Conventional electric vehicle charging systems rely on wired infrastructure and grid-based power, resulting in limited scalability, reduced user-friendliness, inefficient integration of renewable energy, increased grid load, and a lack of unified control. Existing technologies for wireless communication, solar power, battery management, and smart grids operate in isolation, lacking seamless system-level integration.

[0005] The present disclosure provides a solar-powered wireless charging station for electric vehicles that integrates renewable energy generation, wireless power transmission, intelligent battery management, and smart grid connectivity into a single, cohesive system. The system includes at least one photovoltaic module configured to generate electrical energy from solar radiation, which is used directly for charging or stored in a rechargeable battery pack. An inductive charging pad embedded in the ground includes a transmitting coil configured to wirelessly transmit energy to a receiving coil mounted in the vehicle, thus enabling wireless charging without physical connectors.A battery management system continuously monitors the voltage, current, and temperature parameters of the rechargeable battery pack to prevent overcharging, deep discharging, and overheating, ensuring safe and reliable operation. An energy management unit dynamically distributes charging power to multiple electric vehicles based on charging demand, battery state of charge, and priority requirements, preventing system overload and ensuring equitable energy distribution. Vehicle detection sensors automatically identify the presence and orientation of vehicles to initiate the charging process. Furthermore, a smart grid interface enables bidirectional communication with the external grid infrastructure to balance solar energy feed-in with grid demand, optimize energy use, and support load balancing and demand management.The modular and scalable architecture allows for expansion to multiple vehicles and ensures compatibility with various EV models. This makes it a sustainable, efficient, and user-friendly charging solution suitable for urban environments.

[0006] Fig.Figure 1 shows a prototype of a solar-powered wireless charging station for electric vehicles, which incorporates key functional modules on a single circuit board. The system 100 includes a photovoltaic module 102, positioned to capture solar energy and powering the inductive charging pad 104, which is embedded in the ground and equipped with a copper coil for wireless power transmission. A battery monitoring unit 106 regulates the charging process of the rechargeable battery pack and ensures safe operation. An energy management unit 108 dynamically distributes the charging power to multiple vehicles based on demand and a prioritization logic. The system also features a smart grid interface 110, enabling seamless integration into the external grid infrastructure for optimized energy distribution.All components are interconnected via a microcontroller-based control system, enabling real-time monitoring and adaptive charging. The figure illustrates the modular and scalable nature of the invention, which supports the simultaneous wireless charging of electric vehicles using renewable solar energy.

[0007] Although the implementation of systems and methods for a solar-powered wireless charging station for electric vehicles with a battery management system has been described with respect to certain structural features and operating components, it should be noted that the appended claims are not limited to the specific embodiments disclosed herein. Rather, the described features and methods are provided as illustrative examples of the present invention, and various modifications and equivalents can be implemented without departing from the scope and spirit of the invention as defined by the claims.

Claims

[1] Battery management device (100) for a solar-powered wireless electric vehicle, wherein the battery management (100) comprises: at least one photovoltaic module (102) configured in such a way that that it generates electrical energy from solar radiation; an inductive charging pad (104) embedded in a floor surface and comprising a transmitting coil configured to wirelessly transmit energy to an electric vehicle; a battery monitoring unit (106) configured to monitor the charging of a rechargeable battery pack and controls; an energy management unit (108) configured to distribute charging power to a large number of electric vehicles based on charging demand; and a smart grid interface (110) configured to integrate the system into an external power grid, the system (100) is adapted to wirelessly charge multiple electric vehicles using renewable solar energy. [2] Device (100) according to claim 1, wherein the battery monitoring unit (106) monitors voltage, current and temperature parameters to prevent overcharging, deep discharging and overheating of the rechargeable battery pack. [3] Device (100) according to claim 1, wherein the energy management unit (108) dynamically prioritizes charging based on the state of charge of the battery of each electric vehicle and balances the solar energy supply with the grid power via the smart grid interface (110).

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