Generally about 0.9-2 meters high-power wireless charging transmission distance up to 5 meters wireless charging technology can be divided into low-power wireless charging and high-power wireless charging two ways. Low-power wireless charging often uses electromagnetic sensingSuch as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses the induction type.
The distance is greater than 10 cm, and the conversion efficiency is only about 60%, that is, the sent power is 1000W, and the received power is only 600W.
If the charging efficiency is relatively normal and harmless to the human body, the farthest distance that can be done now should be 5-10cm, and the domestic micro goose technology and Qualcomm should be able to do it. And this is not the public familiar with Qi wireless charging, is magnetic resonance wireless charging, based on the principle of magnetic resonance. Although there is also a 1Meters and even farther wireless charging technology, but the current charging power of these are too small, charging speed is too slow, difficult to put into daily use.
Limitation: large volume; Small power WiFi wireless charging: ten meters away Advantages: go with the charge, in line with the concept of wireless charging Disadvantages: charging object positioning is not easy, waste of power Ultrasonic wireless charging: effective range close to 5 meters Advantages: technology is very safe; The receiver is cheap and small; Can be used for data transmission. Cons: The final product may not live up to expectations in terms of price, power, speed, and safety.
2, Qi is a wireless charging connectionThe Wireless Power Consortium's (WPC) "wireless charging" standard; So why is there an Apple qi certification online? That is because Apple's mobile phone wants to play qi certification logo is also to do qi certification! So don't confuse the concept! There are three types of Qi certification: 1) QI-BPP certification: The product supports 5W power below, the use of Qi protocol, must be BPP certification.
3, QI certification is the wireless charging alliance certification, formerly called WPC certification, that is, WirelesThe first letter of the s Power Consortium (Wireless Charging Alliance), which belongs to a technical organization's certification requirements, similar to SIG's Bluetooth BQB certification. It is not directly related to conventional national or regional certification, that is to say, it can be used globally.
4. Qi (pronounced "chee") is derived from Asian philosophy and stands for "key energy", meaning invisible energy. QI certification is the mainstream technical certification for wireless charging products, indicating that the product has reached high quality standards in terms of safety and versatility.
Smart phones, tablets and other mobile devices have been widely used. In order to ensure the wireless charging functionality and security of these devices, WPC has launched the QI certification standard.
Qi (pronounced "chee") derives its name from Asian philosophy and stands for "key energy", meaning invisible energy. QI certification is the mainstream technical certification for wireless charging products, indicating that the product has reached high quality standards in terms of safety and versatility.
QI certification is the Wireless Charging Alliance certification, formerly known as WPC certification, which is Wireless Power ConsorThe first letter of the tium (Wireless Charging Alliance), a technical organization that has certification requirements similar to SIG's Bluetooth BQB certification. It is not directly related to conventional national or regional certification, that is to say, it can be used globally.
QI certification is the Wireless Charging Alliance certification, that is, WPC certification (Wireless? The Power? The Consortium is a collaborative group of independent companies that aims to create and promote widespread market adoption of Qi, an international wireless charging standard compatible with all rechargeable electronic devices. QI certificationIt is a recognized authorization mark for wireless charging products, and only products that have been rigorously tested to ensure safety, interoperability and energy efficiency can use the QI certification mark.
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