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See the news The State of Wireless Charging in 2019 and Beyond from Source Guardian on 11/02/2019 has been updated to day with the theme on feedixo.

The State of Wireless Charging in 2019 and Beyond

Wireless power is ubiquitous now. We use it to charge devices like electric toothbrushes, smartwatches, and earbuds, but most of us use it to charge our smartphones. What we’re talking about here is near field induction charging, and there are a few reasons it has finally taken off for phones in the last few years.One of them is the victory of the Wireless Power Consortium with the Qi wireless charging platform, after a lengthy standards battle. The technology has also improved enormously – the first wireless charging mats delivered just 2.5 watts, whereas the latest spec allows for up to 15 watts. Then there’s the fact that Apple finally adopted Qi wireless charging in the iPhone range, joining Android manufacturers like Samsung, Google, and LG who have been supporting it for years.“Some companies are more adventurous and go faster,” Menno Treffers, founder and chairman of the Wireless Power Consortium, told Digital Trends. “Some companies are a little more conservative and a little slower.”Near field wireless charging is thriving, but it still depends on fairly close contact.Many of us have a wireless charging pad on the desk at work or on the nightstand at home. It’s convenient and easy when you have time to charge, though you may still prefer to plug in when you need a burst of battery power in a hurry.“It’s not an either or,” Treffers said. “You need both.”Qi wireless charging is also making inroads into infrastructure, with pads popping up in restaurants and trains. One of the big advantages is that wireless charging pads don’t require the same level of maintenance as USB ports do. Ports break with wear and tear, both in your devices and wherever you’re plugging in. Wireless charging can cut down on that and there’s no evidence that it degrades your battery faster than wired charging.The Wireless Power Consortium has its sights set on the kitchen next, with big wireless charging pads that sit beneath your worktop and can deliver 2KW to wirelessly power blenders or hotplates. This can help people when space is at a premium and it may be the answer to the minimalist kitchens of our dreams.EnergousThe organization will also continue to push the upper limits of smartphone charging.“For phone charging, it’s just a matter of increasing the power we can deliver while maintaining safety,” Treffers said.But while near field wireless charging is thriving, it still depends on fairly close contact. What about sending power further?Wireless power over distance is still comingWireless power over distance is a nascent category but it constantly feels as though it’s on the verge of a breakthrough. Last year, we posed the question: When will your phone charge wirelessly in your pocket? And it looked as though the answer was “soon,” but the reality is that we’re still waiting.Having seen working demonstrations from Ossia — transmitting power to a phone case over a distance of a few feet to slowly charge the phone inside – we know that the tech works. Ossia recently partnered with case maker Spigen to bring this technology to market. At CES 2019, Spigen CEO Daeyoung Kim said the company is hoping to release some kind of transmitter and power receiving case package by 2020.“Power through the air has existed for a while.”The problem is there are limits on the power that can be delivered and that’s tied up with the difficulty of getting certification.“Power through the air has existed for a while,” Treffers said. “It’s not technically difficult but making it efficient is hard.”The Ossia demo we saw involved a large transmitter sending out 10W and the receiving device could pick up around 1W within six feet of the transmitter. Beyond that distance the charge dropped down to milliwatts and eventually microwatts.When the power demands of the receiving device are very low, like retail price tags, for example, you can safely and easily transmit power to them. A company called Powercast has developed several products, including e-ink retail price tags that don’t have any battery inside and can be updated wirelessly. It has FCC approval because the power levels are very low, and it has managed to achieve a maximum range of 80 feet.But what if the receiving device requires more than just a few microwatts of power? Charging a phone with 5W is considered slow nowadays, but to get...


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See the news The State of Wireless Charging in 2019 and Beyond from Source Guardian on 11/02/2019 has been updated to day with the theme on feedixo.

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