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This skill is too cold: Have you used a wireless charging phone?
In the 1890s, Nikola Tesla invented the "Tesla Coil", which was able to spread electricity through the air, opening the era of wireless charging. But what Nikola Tesla did not expect was that, after more than a hundred years, the biggest beneficiary of wireless charging technology was actually electric toothbrushes, which confirmed the frustration. Although wireless charging technology has been widely concerned in recent years, it has not yet gained popularity in the consumer electronics field.
However, the release of Samsung's flagship Galaxy S6 once again brings wireless charging technology to everyone's attention. As early as the release, the Galaxy S6 received a lot of praise for its outstanding appearance and powerful performance. But the most noteworthy is Samsung's wireless charging technology for the new machine. Compared to fast charging, wireless charging technology subverts the traditional charging mode. In fact, today, with electric vehicles and smart homes starting to work, it is not difficult to imagine how important wireless charging technology will play in the future. So today, Xiaobian will talk to you about wireless charging technology.
There are three major wireless charging standards in the world today, namely the Qi standard introduced by WPC, the PMA standard introduced by Duracell Powermat, and the A4WP standard introduced by Qualcomm, Samsung and Powermat. Now that the A4WP standard language PMA standard has been merged, it is not unreasonable to say that the two standards are.
Qi standard is the world's first wireless charging technology standardization organization - Wireless Charging Alliance (WPC) launched the wireless charging standard, which uses the most mainstream electromagnetic induction technology, with compatibility and versatility. As long as it is a product with the Qi logo, you can use the Qi wireless charger to charge. And because the versatility problem is solved, in the near future, mobile phones, cameras, computers and other products can be charged with the Qi wireless charger, which provides a possibility for large-scale application of wireless charging.
The most active vendor in the early years of the Qi standard was the Nokia that was acquired. The previous Lumia920 and other flagship machines use the Qi standard. Just as the Lumia mobile phone is mainly aimed at the low-end market, it is difficult to see the wireless charging again.
The PMA standard was initiated by Duracell Powermat, a joint venture between P&G and wireless charging technology company Powermat (also a support member of A4WP technology) with a superior overall strength. The company has introduced a WiCC charging card, which is larger than the SD card. It is internally embedded with components such as coils and electrodes for electromagnetic induction type non-contact charging. The thickness is thin and can be used next to the existing smart phone battery. .
Today, AT&T, Google and Starbucks have joined the PMA Alliance. Most of the wireless charging provided by Starbucks and IKEA supports the PMA standard, which is very convenient for consumers.
The A4WP standard, which was merged with the PMA standard, was established by the wireless charging alliance jointly established by Qualcomm, Samsung and Powermat. The goal is to establish technical standards and industry dialogues for wireless charging devices for electronic products, including portable electronic products and electric vehicles. mechanism.
Because of the two trees that are backed by Qualcomm and Samsung, the A4WP standard is the most likely standard to become mainstream in the future, not to mention the ecological impact of the merger with the PMA standard. Imagine Qualcomm's integration of wireless charging modules in the processor in the future. Coupled with Samsung's influence in the mobile phone market, it is only a matter of time before it becomes mainstream.
Only a competitive market can create unlimited new technologies. In addition to the above three standards, there are also some new startups that have a lot to offer in the field of wireless charging, such as Israel's Wi-Charge, the US's WiTricity and Energous.
Israel's Wi-Charge charging system utilizes infrared wireless charging technology. The energy from the ceiling is used to convert the energy into infrared light that covers about 50 square meters below the transmitter. A receiver attached to or built into an electronic device captures infrared light and converts it into energy. With this technology, you can charge all the devices in your room at the same time.
Energous' WattUp technology delivers energy through the air. It uses a WiFi-like 5.7 GHz and 5.8 GHz band to transfer energy between wireless receivers. At the same time, the application of Bluetooth technology allows the transmitter and receiver to directly scan the device for more accurate positioning and transmission and reception.
WiTricity uses magnetic field resonance technology to achieve wireless charging. The maximum distance is 2.4 meters, which can charge multiple devices at the same time, and can also penetrate walls, wood and other obstacles. Resonance is a very common phenomenon in nature. As long as the two objects vibrate at the same frequency, energy exchange occurs. WiTricity technology uses this principle. Thanks to resonance technology, WiTricity is the safest than wireless charging technology such as electromagnetic radiation.
It can not only achieve the relative invisibility of the charging device, but also reduce the wear rate of the device. It has a large application range and is easy to operate. Why is wireless charging not popular?
As far as consumers are concerned, the traditional wired charging method has been ingrained. Nowadays, wired charging has been developed very well and the energy conversion rate is extremely high. The recent use of fast charging technology has taken advantage of wired charging. Consumers are more willing to choose a familiar approach than fresh wireless charging. Moreover, in order to enjoy wireless charging, consumers must also purchase a wireless charging pad, which is an extra cost, which is not worth the candle. Therefore, in addition to enthusiasts, it is difficult for consumers to try.
As far as manufacturers are concerned, the current cost of wireless charging modules is relatively high, so they can only be used on the flagship machine. Invisibly, the audience of wireless charging is opened, and the masses are separated from the masses. Nowadays, mobile phones are becoming thinner and lighter. Adding wireless charging modules will inevitably increase the thickness of mobile phones, which is not in line with the design principles pursued by current mobile phone manufacturers. Assuming that the thickness must be increased, it is not as good as increasing the battery capacity.
In terms of maturity, wireless charging technology is currently not suitable for large-scale applications. In order to achieve large-scale wireless charging, it is necessary to invest huge costs and maintenance costs are enormous. The implementation of large-scale long-distance transmission, the energy consumption of equipment will inevitably increase. The greater the distance, the greater the energy loss. Considering that the electromagnetic energy conversion rate itself is not high, it is only possible to achieve point-to-point charging of ultra-short distance at present, and there is still a long way to go for large-scale use.
Wireless charging technology represents the future, just like mobile phones and wired phones, WiFi and fixed networks, wireless performance is not as powerful as wired, but wireless technology is mainstream in terms of popularity and usability. IKEA has begun to install wireless charging modules in the furniture, allowing users to use it directly. It is foreseeable that in the wave of the development of smart homes and electric vehicles, wireless charging will have more room to play. Perhaps in response to this sentence, life is limited, but life is doomed to have no "line."