Like yesterday Nokia Lumia 920 When it became the first smartphone to offer built-in wireless charging, it blew our collective mind. Sure, it took some time to actually charge, but in our opinion it was the beginning of a brilliant cable-free revolution.
No longer bound by the limits of wire, humanity has realized Nikola Tesla’s vision and pushed itself towards a new era of peace, prosperity and technological innovation.
While things aren’t going Pretty Things are still going a long way, as long as our young people wanted.Today we have a cell phone like Xiaomi Mi 11 Ultra 67W wireless charging is possible.
So, frankly, it’s pretty ridiculous and shows how far we’ve come in just a few years. It can be charged to 100% in less than 40 minutes from the brink of death, and most phones charge faster than even a cable can manage.
Aside from flashy outliers, wireless charging is becoming more prevalent. People are sneaking wireless charging pads into furniture such as tables and lamps, both at home and in coffee shops. It’s also built into the car, so you can use some phones to wirelessly charge other phones, earphones, and other devices by simply placing them on the back of your phone.
So where are we going from here? Have you reached the pinnacle of convenient wireless charging? Not perfect.
Get older or go home
The most direct improvement you can expect in the next few years will be to adopt existing wireless charging technology and enhance it in several important ways. But before we dive into it, let’s take a quick look at how to charge your current phone wirelessly.
When electricity is passed through a copper coil, an electromagnetic field is generated. These coils are built into wireless charging pads and phones. If both coils are placed next to each other (for example, when the phone pops into the charging pad), these electromagnetic waves interfere with each other and a large field from the charging pad coil provides energy to the smaller coil of the phone. First, charge the battery.
The problem with this that you will notice when using wireless charging is that the coils must not only be incredibly close together, but also in proper placement. If your phone isn’t in the exact right place, it won’t charge, and you can wake up to discover that your phone died overnight. That is not ideal.
U.S.-based company Islay Aims to improve things significantly by creating a wireless charging solution that uses multiple coils in a larger area. This allows you to intelligently detect the location of devices placed on it. Ultimately, you’ll get a charging pad that charges multiple devices without having to worry about careful placement. Just pop your phone and headphones as you like and it will turn golden.
It’s fairly slow at 5 to 7.5 watts, but it’s an ideal choice for charging at night or at your desk. Even better, this solution can be scaled up for incorporation into furniture, cars, and other places that require convenient charging. Theoretically, even if you don’t see a single cable, your entire desk becomes one giant wireless charging pad that can charge everything from desk lamps and laptops to phones and headphones.
Turn on the radio
One route is to advance existing wireless charging technology, but the other way it takes a completely different route, eliminating the need to physically place the phone on something that opens up the world of true wireless charging. Welcome to the world of radio frequency or RF wireless charging.
RF radiation is at the bottom of the electromagnetic spectrum. RF, a type of non-ionizing radiation, has lower energy than other types of non-ionizing radiation, such as visible light and infrared light.
Devices with antennas capable of picking up these low levels of high frequencies can convert them to DC voltage to power the device itself. In essence, imagine RF wireless charging like a Wi-Fi hotspot. It releases energy throughout the room and charges everything wirelessly using compatible receivers. However, there are some issues.
For starters, thanks to what is called the inverse square law, the farther away you are from the RF transmitter, the less power is available, which drops significantly. This means that if you are twice as far from the receiver, you will be exposed to about a quarter of the power. When it comes to smartphones, this solution looks a bit boring. The trickle charge time when things are standing is simply too slow.
One solution to this power reduction is to simply increase the power of the transmitter, but this has a significant drawback. That is, higher levels of RF radiation are absorbed by the body, warming it up as if it were ready for microwaves. meal. Obviously, this is not ideal.
However, there are some companies working on a variety of solutions, including: Energetic And Power cast.. Both companies are working on a solution that uses RF waves to charge items wirelessly, the latter also offering a product that can charge the Nintendo Switch Joy-con controller wirelessly (very close to the receiver a few inches away). And very slowly).
Energous’s WattUp solution envisions a future in which the transmitter can be embedded in larger objects such as desktop monitors to charge objects such as smartphones up to 3 feet away. Both companies appear to be making progress, but the limitations at this point mean that in the near future, only smaller devices are likely to work with the solution.
If you want full room RF charging without frying Ossia We are working on a solution that may be the answer. To overcome the risk of transmitting more RF power for longer charging times, the specially designed transmitter automatically avoids people by bouncing around walls and objects. You can send power to devices that span the entire room. When a person blocks the line of sight, that particular signal is blocked, but the signal can find other paths in the room, allowing the device to be charged.
If all of this RF wireless charging maller key sounds a bit overwhelmed and much more fetched, it’s for now. Currently, with currently available technologies, RF charging solutions need to be further developed before starting to think about widespread adoption.
Within the next few years, less demanding devices such as keyboards and mice may rely solely on power from desktop RF transmitters, but more robust ones may still be well ahead. .. In any case, not having to worry about charging peripherals is at least a step in the right direction.
Infrared saves days
If you’re a little disappointed to imagine a future without true wireless room charging, don’t cry yet.Israeli company Wi-Charge Given that you can already power large items such as speakers from the other side of the room, there is a completely different solution that looks very promising. Yes, it is.
The secret behind that technology is wireless power transfer using focused infrared beams. Larger transmitters can be installed in the room (one prototype is built into the ceiling light) and can be easily connected to the mains. When on, it automatically detects focused infrared beams and can accurately beam out to receivers anywhere in the room.
Receivers that can be attached to (and will eventually be built into) devices such as lamps, smartphones, and speakers are equipped with mini-solar cells that can convert the transmitted infrared beam into electricity. Multiple devices can be charged at the same time, and the system can deliver watts of power up to meters away. This is very impressive to say the least.
If that’s not enough, it’s much safer than an RF wireless solution. Wi-Charge uses a Class 1 infrared laser, which is safe under all conditions of normal use and poses no health risks. There is also additional security provided by the fact that the infrared beam automatically stops when it detects an obstacle between the charging device and the transmitter.
This leads us pretty well to the main drawbacks. Infrared charging solutions depend on the line of sight. In other words, you can’t charge your phone if it’s in your pocket. Nonetheless, this is the closest and most sophisticated wireless charging solution we have ever seen, within the potential for more infrared charging technologies in the near future.
In the meantime, of course, I could see the battery innovation (hopefully not literally) exploding. This includes everything from mythical graphene batteries to supercapacitors that fully charge in just a few seconds. But that involves jumping all together into completely different speculative rabbit hole depths …
Wireless Charging on Smartphones: What Will It Bring in the Next 10 Years?
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