The wireless charging of the iPhone 12 is comfortable by adopting Magsafe.However, care must be taken for medical devices.
The wireless charging of Chinese manufacturers is further ahead.Xiaomi has already released a smartphone "MI 10 Ultra" and "Mi 11" that supports wireless 50W charging.OPPO will release 65W compatible products this year.In a few years, smartphones wireless charging will be the same as wired (cable).However, these technologies do not make use of the characteristics unless the smartphone and charging stand are adjusted to the correct position, such as the iPhone 12.
In this way, the current wireless charging is called "wireless", but in fact, the charging stand and smartphone must be "contact".In other words, the advantage of wireless charging at the moment is that you do not have to pierce your smartphone.The magnet method used on the iPhone will also be alerted by Apple, and other manufacturers will see it for a while.
On the other hand, there is an expectation of a completely different concept wireless charging technology.It is "short -range wireless charging".This is a technology that can be charged even if the between the charging stand is several meters away, and there is no need to put a smartphone on the charging stand.When sitting on a sofa and using SNS on a smartphone, you can charge the smartphone wirelessly by placing a "charging transmitter" on the table.From the end of January to the beginning of February, we published a demonstration of this short -range wireless charging technology as if Xiaomi and Motorola showed together.
Xiaomi's "Mi Air Charge Technology" uses a charging transmitter of a small air purifier to charge a few meters away smartphones with 5W output.The transmitter side flies power in the correct direction, like the antenna of the smartphone base station, using a beam forming technology that can identify the smartphone position.The large transmitter seems to have a built -in 144 antennas.The smartphone side also has multiple dedicated antennas and receives electricity.
In addition, the prototype demonstration of the short -range wireless charging of Motorola has been released.The transmitter is large enough to make the existing wireless charging stand one size larger.In the demonstration, the output seems to be lower than Xiaomi's technology because the charge was charged up to 1 meter.Hiding the transmitter with the palm will stop charging, but it does not affect the wireless power to the human body.The charging output is unknown, but the practicality may be close as far as the demonstration look.
In fact, the short -range wireless charging technology itself is already researching and developing by many companies, and the technology of Xiaomi and Motorola is not new."CEATEC 2020 Online", held online in October 2020, exhibited "Cota" that can be wirelessly charged at 10 meters of OSSIA invested by KDDI.Many other companies are also studying for practical use of this technology.
If short -range wireless charging technology is put into practical use, the awareness of "charging smartphones" will no longer be necessary, and it will be automatically charged just by being at home, offices, stores, stations, etc. with the transmitter.increase.And only when the battery capacity is reduced and you want to charge quickly, you will be able to use a smartphone on a high -output wireless charging table to charge it properly.In other words, at that time, the USB terminal for charging may be gone on smartphones.
In addition to smartphones, practical use of short -range wireless charging technology has a great advantage.There are few people who have a sensor at their home now.However, if various sensors such as brightness, temperature, humidity, dynamic sense, and noise are installed, AI automatically determines the indoor environment based on those data, set the air conditioner temperature and turn on the power.You will also be able to operate an air purifier.Although these sensors are already on sale, it is difficult to install each sensor, but it is also troublesome that the battery must be replaced every few months.
However, when wireless short -range charging can be used, if the sensors are attached to the wall, it will always be charged just by leaving it alone.This will spur the spread of smart homes, which monitors the situation inside the house while going out and automatically turns on/off home appliances.
And in fact, as a familiar example, smartwatches will benefit from short -range wireless charging.Recent smartwatches are two polarized products that are "low -priced, long -term use, low -functionality" products and "high -priced and high -performance" products."Mi Watch Lite" just released by Xiaomi can be used for 9 days for about 7,000 yen.However, the function is not as large as the activity meter.
On the other hand, Apple Watch 6 has a high price, but can also use mobile payment, and the ECG (ECG) function can now be used in Japan with the latest OS update.The battery life is longer than the conventional product, and can be used for up to 24 hours for up to 24 hours.However, in reality, it requires charging every day, and even once every two days is required.However, if you charge while you are sleeping, you will not be able to use your sleep record function.
Each company conducts its own research on short -range wireless charging.Even if products will come out little by little in the market in the future, it seems that it will still be about one or two years ahead.In the future, short -range wireless charging will be necessary to unify standards at each company, as in the wireless charging standard "Qi".From the iPhone 12, the charger is no longer attached to the package, but in a few years the charger itself is not used.
