
There are several companies that are currently working on wireless power transmission technology. Wi-Charge, for example, is a wireless power company that has developed AirCord, a wireless technology that is being used in smart homes, wireless advertising displays, digital signage, and personal care devices. Another company, WiTricity, is an American wireless charging technology company that licenses technology and reference designs for wireless electrical vehicle (EV) charging as well as consumer products such as laptops, mobile phones, and televisions. Other companies include Anjie Wireless, Green Power, and Emrod, which is a New Zealand-based energy startup that is working on a wireless energy infrastructure setup.
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What You'll Learn

Wireless charging for electric vehicles
Wireless charging technology for electric vehicles (EVs) is an emerging innovation that promises to transform the way we power our cars, with companies like WiTricity at the forefront of this revolution. WiTricity, a Massachusetts-based wireless charging technology company, has developed wireless EV charging systems that offer efficient, safe, and convenient charging. Their technology enables wireless power transfer over distance via magnetic resonance, with an energy conversion efficiency of over 90%.
WiTricity's wireless charging equipment eliminates the need for bulky cords and chargers, providing a seamless charging experience for EVs. The system consists of a power box, a conduit, and a charging pad. The power box hooks up to a local power supply, and the conduit runs from the box onto the floor, connecting to the charging pad. When an EV parks over the pad, charging automatically initiates. This technology can be applied in various settings, from city streets and public parking lots to home and workplace parking spaces, offering convenient charging options for EV drivers.
WiTricity has established itself as a leader in wireless EV charging, partnering with numerous automotive companies, including Audi, Mahle GmbH, and Mitsubishi. In 2019, Honda and WiTricity demonstrated wireless vehicle-to-grid charging at the Consumer Electronics Show. The company has also reached licensing deals with major players like Intel, Toyota, and Qualcomm Halo, showcasing the broad industry recognition of its technology.
Other companies are also making strides in wireless EV charging. For instance, Anjie Wireless, a Chinese company, has invested significantly in R&D and manufacturing capabilities for wireless power transfer devices. They aim to provide wireless charging solutions for various industries, including electric vehicles, in collaboration with WiTricity. Additionally, Voltaware, a semiconductor company, is focusing on wireless charging for e-mobility, addressing the needs of e-bikes and mini e-scooters, as well as simultaneous multi-device charging.
The wireless EV charging landscape is rapidly evolving, with automakers and technology companies working towards making wireless charging a reality for EV owners. While a nationwide electric vehicle charging network is still in development, the future of wireless EV charging looks promising, offering convenience, efficiency, and a more seamless driving experience.
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Wireless charging for consumer devices
Wireless charging technology has been increasingly adopted by consumer devices, with wireless charging pads and stands now available for phones, wireless earbuds, and watches. Wireless charging technology is also being used for laptops, televisions, and electric vehicles.
The Wireless Power Consortium's Qi charging standard has been the most widely adopted technology for wireless charging smartphones. The Qi standard allows for wireless charging of any electronic device with Qi capabilities, including all current iPhones, most Android phones, and many wireless earbuds, smart watches, fitness trackers, and other wearables. The Qi2 standard, which is still in its early days, adds MagSafe-style magnetic charging and promises a 15-watt charging rate.
NFC wireless charging is another technology that has been explored for consumer devices. NFC technology supports bi-directional communication and can charge devices wirelessly where flexibility is a key factor. However, NFC has seen limited use for wireless charging due to the conventional architecture of NFC transmitters, which limits the power output. The introduction of the PTX100W aims to address this issue by providing an output of up to 2.5W and reducing charging times for small batteries to under three hours.
Several companies are at the forefront of wireless charging technology. Wi-Charge, a wireless power company, offers AirCord™ wireless technology that provides long-range wireless power to thumb-sized receivers that can be embedded in most lifestyle and commercial devices. WiTricity Corporation, an American wireless charging technology company, has reached licensing deals with automotive companies and demonstrated wireless charging for consumer products such as laptops, mobile phones, and televisions. Anjie Wireless, a company focusing on wireless power transfer devices, has invested in R&D to become a leading provider of wireless charging solutions for various industries. Other companies in the wireless charging space include Voltraware, Green Power, and Foxconn Interconnect Technology Limited.
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Wireless charging technology
The first wireless charging standard for vehicles was the SAE J2954 standard, which allows inductive car charging with a power delivery of up to 11 kW. The Qi standard is the most widely used wireless charging standard, allowing all devices to be charged at Qi charging stations. Qi-certified charging stations are considered safe and efficient, with an energy conversion efficiency of above 90%.
Several companies are leading the way in wireless charging technology. WiTricity Corporation, a spin-off from the Massachusetts Institute of Technology (MIT), was founded by professor Marin Soljačić in 2007 and is based in Watertown, Massachusetts. WiTricity's technology allows wireless power transfer over distance via magnetic resonance, and the company has reached licensing deals with several major companies, including Intel, Toyota, and Qualcomm. Wi-Charge is another company at the forefront of wireless charging innovation, with its AirCord™ technology providing long-range wireless power to thumb-sized receivers that can be embedded in most lifestyle and commercial devices.
Anjie Wireless, a Chinese company, is also making strides in the wireless charging market. Anjie Wireless aims to be a one-stop provider of wireless charging solutions for customers in various industries and has invested significantly in its test lab and instruments. The company has partnered with WiTricity to enhance its wireless power transfer capabilities, particularly for electric vehicle charging applications.
Overall, wireless charging technology offers a convenient and cable-free way to charge electronic devices, and its popularity is expected to continue to grow.
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Wireless power transfer over distance
Wireless power transfer (WPT) is a technology that transmits electrical energy without wires as a physical link. WPT systems consist of a transmitter device connected to a power source, which converts the power to a time-varying electromagnetic field, and a receiver device that extracts power from the field and supplies it to an electrical load. This technology can increase the mobility, convenience, and safety of electronic devices.
WiTricity Corporation, an American wireless charging technology company, is a pioneer in wireless power transfer over distance. The company was founded in 2007 by Massachusetts Institute of Technology (MIT) professor Marin Soljačić. WiTricity's technology has been used to wirelessly charge consumer products such as laptops, mobile phones, and televisions, as well as electric vehicles (EVs).
Other companies in the wireless power transfer space include Wi-Charge, Anjie Wireless, Green Power, and Voltrawere. Wi-Charge's AirCord™ technology provides long-range wireless power to thumb-sized receivers that can be embedded in lifestyle and commercial devices. Anjie Wireless focuses on the development, application, and manufacture of wireless power transfer devices, with a particular interest in wireless charging solutions for electric vehicles. Green Power supplies wireless power transmission (WPT) devices for logistics equipment in semiconductor and display cleanroom factories, as well as wired and wireless chargers for electric vehicles. Voltraware, a fabless semiconductor company, specializes in the development of wireless power ASICs and is a member of the AirFuel Alliance.
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Wireless power transmission devices
Wireless power transmission (WPT) is the transmission of electrical energy without wires as a physical link. Wireless power transmission devices can use electromagnetic fields, radio waves, or laser beams to transfer power to receiver devices.
Wireless power transmission technology can be used to power a wide range of devices, from smartphones to electric vehicles. The Qi wireless charging standard, for example, is commonly used for wireless charging of smartphones and can also transfer small amounts of data, such as device authentication or identification. Wireless power transmission can also be used for electric vehicle charging, with companies like WiTricity demonstrating wireless charging for vehicles like the BMW 530e iPerformance and Hyundai Kona.
There are several companies focused on developing and manufacturing wireless power transmission devices. Wi-Charge, for instance, offers wireless power transmission technology for a range of applications, from smart homes to wireless advertising displays. Their AirCord™ technology provides long-range wireless power to thumb-sized receivers that can be embedded in various devices and home products. Another company, Anjie Wireless, aims to be a one-stop provider of wireless charging solutions for customers in various industries, including electric vehicles.
Other companies in the wireless power transmission space include Green Power, which supplies wireless power transmission devices for logistics equipment in semiconductor and display cleanroom factories, and Voltraware, a semiconductor company specializing in the development of wireless power ASICs for e-mobility applications like e-bikes and mini e-scooters.
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Frequently asked questions
WiTricity Corporation is an American wireless charging technology company based in Watertown, Massachusetts. The company was founded by MIT professor Marin Soljačić in 2007.
WiTricity's technology allows wireless power transfer over distance via magnetic resonance. This technology works through various materials such as stone, cement, asphalt, or wood, and has an energy conversion efficiency of above 90%.
WiTricity's technology can be used to charge a range of products, including laptops, mobile phones, and televisions, as well as electric vehicles. The company has also demonstrated how the technology can be used to power soldiers' helmets with night-vision goggles wirelessly during Humvee transportation.






















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