SOFTBANK commercializes technology for wireless power supply from base stations

By : ilikephone / On : 16/01/2023

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Tweet from twitter@iPhoneMania_jp November 6, 2021 02:46 Until reading completed About 2 minutes 27 seconds SoftBank uses mobile phone base stations throughout Japan to wirelessly power electrical devices We will put the technology to practical use. Nihon Keizai Shimbun reports.

Aiming for commercialization in 2025 at the earliest

According to the media, SoftBank will soon start a demonstration experiment, aiming for commercialization in 2025 at the earliest. Regarding the development of wireless power supply technology, it seems that Kyoto University, Kanazawa Institute of Technology, and the National Institute of Information and Communications Technology (NICT) will jointly proceed. Nikkei reports that the wireless power supply will use the 28 GHz frequency band used for 5G communication, and will be transmitted from a power transmission device installed at the base station. SoftBank has base stations in approximately 230,000 locations nationwide (as of February 2021). Unlike the "Qi" standard wireless charging currently widely used in smartphones, etc., this does not require contact with a charger. In the future, Softbank is aiming to fly electricity to a range of about 100 meters. However, since it is said to be a weak power of about 1 milliwatt at the beginning, it is thought that the electronic devices to be supplied with power will be those with low power consumption, such as hearing aids and electronic tags.

Near- and medium-range wireless power transfer technology that has been developed for some time

It has been rumored that Apple will also adopt the near- and medium-range wireless power transfer technology for the iPhone for quite some time, but at present, However, it has not yet been put to practical use. Back in 2017, Energous, which still promotes WattUp wireless charging technology, was rumored to be partnering with Apple. In the United States, Ossia has developed a battery "Cota" that can be used repeatedly by short- and medium-range wireless charging, and is increasing its partners around the world. And in January, Chinese smartphone maker Xiaomi announced the short-range wireless charging technology "Mi Air Charge Technology" in January this year.

Will the iPhone be fully wireless charged in the future?

What I am concerned about is the future trend of the iPhone. Currently, the iPhone is equipped with a Lightning terminal, but the European Commission of the European Union (EU) has submitted a bill to oblige the charging terminal of smartphones sold in the same region to be unified to USB-C. If the bill is passed, it will be necessary to switch the Lightning terminal to the USB-C terminal, but Bloomberg's noted reporter Mark Garman said that switching from Lightning to USB-C would be very difficult, so Apple would rather We anticipate that it will make the iPhone transition to full wireless. I don't know if Apple will adopt a short-range wireless charging method for the iPhone, but it may be possible to abolish wired charging and switch to wireless charging.

Source: Nihon Keizai Shimbun, Ossia, EnergousPhoto: Softbank (lunatic)

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Softbank, wireless power supply from base station Practical application of technology