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8 Companies Developing EV Wireless Charging Solutions
These companies are imagining a cordless future for powering electric vehicles.
December 20, 2023
Wireless charging for electric vehicles (EVs) represents a significant leap in the evolution of EV technology.
At its core, wireless EV charging operates on the principle of inductive charging, where an electromagnetic field transfers energy between two coils - a transmitter on the ground and a receiver mounted on the vehicle. When an alternating current (AC) flows through the transmitter coil, it generates a rapidly changing magnetic field. This field, when intersecting with the receiver coil in the EV, induces a current in the latter. This current is then converted from AC to direct current (DC) to charge the EV's battery. The process, though seemingly straightforward, involves complex electrical engineering principles to maximize efficiency and safety.
For example, the efficiency of wireless charging systems hinges on the alignment and distance between the coils, known as coupling. Engineers have developed sophisticated systems to enhance this alignment, ensuring effective power transfer even when the vehicle is not perfectly positioned over the transmitter. This has been further bolstered by the development of resonant inductive coupling, where both coils resonate at the same frequency, allowing for a larger air gap between the coils and more flexible positioning of the vehicle.
The importance of wireless charging for EVs is that it addresses a significant barrier to EV adoption: the inconvenience of cable-based charging. This technology promises a 'charge-as-you-go' scenario where EVs can be charged at traffic stops or in parking spaces equipped with transmitter pads, reducing range anxiety. Furthermore, wireless charging systems can be embedded in public infrastructure, making EV charging as ubiquitous as Wi-Fi, dramatically changing the landscape of urban transportation.
In this piece, we’ll talk about some companies that are pioneering the field of wireless EV charging. Read on to learn about eight companies developing wireless charging solutions for EVs.
About the Author(s)
Jake Hertz is an Electrical Engineer, Technical Writer, and Public Relations Specialist. After he received his M.S. and B.S. in Electrical and Computer Engineering from the University of Rochester, he spent three years working as an Electrical Engineer at MakerBot Industries.
As a writer, Jake is well known for his frequent contributions to various engineering websites, where he has garnered readership in the tens of thousands. Through his business, NanoHertz Solutions, Jake works with cutting-edge companies in the hardware and semiconductor space to build industry buzz and awareness through Public Relations and Technical Writing services.
As an engineer, Jake now works with numerous startups to help develop their hardware products. He is also a Co-Founder of Origin Labs, a NYC-based design firm for tech startups in the hardware space.
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