Electromagnetic induction technology is the first generation of mobile phone wireless charging Wireless charging enterprise standard Wireless charging enterprise standard , through the primary coil transmission of a certain frequency of alternating current wireless charging enterprise standard , Electromagnetic induction is used to generate electricity in the secondary coilStream Wireless charging enterprise standard to achieve wireless transmission of energy. However, the wireless charging enterprise standard , this technology can only achieve single-to-single, short-distance (within 1cm) charging, the power is limited to 5 watts, and can not achieve single-to-multiple charging like WiFi.
Magnetic resonance: A new breakthrough in long-distance transmission Magnetic resonance technology takes a different path, which realizes remote transmission through resonator and magnetic field resonance. Especially in the field of electric vehicle charging, efficiency improvement is the focus of research. As shown in Figure 4-2, YesThe magnetic induction coil on the base converts electrical energy into electromagnetic waves, and the magnetic induction coil on the back of the phone converts electromagnetic waves into electrical energy to charge the battery.
The core principle of wireless charging is actually electromagnetic induction, and the principle is not complicated. So far, there are two main technologies in the industry, one is the magnetic field induction technology represented by the Qi standard, and the other is the magnetic resonance technology represented by the AiRFuel standard. In principle, magnetic resonance is the better solution, it supports a longer charging distance, and can support multiple devices charging at the same time.
2, QI certification is the Wireless charging alliance certification, formerly known as WPC certification is the first letter of the Wireless 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.
3, the certification refers to compliance with the wireless charging Alliance (WPC) developed wireless charging standards certification. Qi certification refers to the certification that meets the wireless charging standards set by the Wireless Charging Alliance (WPC). The Wireless Charging Alliance (WPC) is a global organization dedicated to developing and promoting standards for wireless charging technology.
4, Qi certification Wireless charging enterprise standard : the universal language of wireless charging industry Qi, the full name of Wireless Power Consortium,r Consortium Wireless charging Enterprise Standard , referred to as WPC) initiated and developed, is currently the world's widely recognized wireless charging standard. Including Apple, Samsung, Nokia and other world-class enterprises to Qi standard as their terminal equipment wireless charging technical standards.
The iPhone 15's wireless charging function is based on the Qi wireless charging standard. Qi is the world's first standards organization to promote wireless charging technology - Wireless Power Alliance (WPC) launched the "wireless charging" standard, with convenience and versatility two characteristics. Different brands of products, as long as there is a Qi logo, can be charged with Qi wireless charger. To use the iPhone 15's wireless charging feature, two conditions need to be met.
Apple XR uses the Qi standard wireless charging technology, which is a wireless charging method based on the principle of electromagnetic induction. Users simply place a charger that supports the Qi standard on the back of an Apple XR phone to achieve wireless charging. At the same time, Apple also introduced the MagSafe wireless charger, which uses a magnetic adsorption design, can be more stable with the Apple XR phone connectionIt also supports fast charging.
Apple 12 supports two wireless charging standards: First, Apple provides MagSafe wireless charging, the highest output power of 15W< /strong> Wireless charging enterprise standard ; The second is the international standard Qi wireless charging, the highest output power is 15W. Supported. The Apple 12 supports both MagSafe wireless charging (up to 15 watts) and Qi Wireless charging (up to 5 watts).