Mobile phone wireless charging refers to the meaning that the charger and the electrical device can be connected to the phone without wires.
Mobile phone wireless charging technology is completely without the use of wires, the use of magnets for mobile phone charging technology. Mobile phone wireless charging technology, derived from wireless power transmission technology,The technology uses magnetic resonance to transfer electric charge in the air between the charger and the phone, and the coil and capacitor form resonance between the charger and the phone to achieve efficient transmission of electric energy.
Wireless charging, also known as inductive charging, non-contact inductive charging, from wireless power transmission technology, is the use of near-field induction, that is, inductive coupling, by the power supply device (charger) to transmit energy to the power device, the device uses the received energy to charge the battery, and at the same time for its own operation.
is a technology that uses magnets to charge devices without wires at all. Wireless charging technology, fromWireless power transmission technology uses magnetic resonance to transmit electric charge in the air between the charger and the device, and the coil and capacitor form resonance between the charger and the device to achieve efficient power transmission technology.
1, wireless charging has requirements for charging distance, the maximum charging distance is only 10 mm. The thickness of the hand case is required, and some charging boards will mark that the thickness of the protective case should not exceed 3 mm. Wireless charging technology (English: Wirelesschargingtechnology;Wirelesschargetechnology is derived from radio energy transmission technology, which can be divided into two ways: low-power wireless charging and high-power wireless charging.
2, Qi wireless charging has requirements for charging distance, the maximum charging distance is only 10 mm. This is a bit "blocking" for Chinese mobile phone users who like to use mobile phone cases, although there is no need to remove the mobile phone case, the thickness of the mobile phone case has requirements, and some charging plates are marked, and the thickness of the protective case should not exceed 3 mm. Since most smartphones that support wireless charging use Qi wireless charging standard technology.
3The distance of wireless chargers produced by different manufacturers will be different, generally speaking, effective charging can be achieved within 2 to 3 meters.
4, the efficiency of wireless charging equipment reception rate is about 70%, which is equivalent to wired charging, but it has the automatic shutdown function of full charge, saving unnecessary energy consumption. Its intelligence is reflected in the automatic identification of different devices and energy needs, and personalized charging for different electronic products.
5, we often say that wireless charging actually has great limitations, the effective distance is generally only 8 mm -15 mm, in this range can be normal wireless charging, the so-called spaceWhat distance can be reached by electric means?
The core magnetic resonance medium and long distance wireless charging developed by Spurotin can successfully achieve wireless charging within one meter.
Currently known reports, the farthest distance is 10 meters, using electromagnetic wave technology. The existing wireless charging technology uses magnetic field, electromagnetic wave, laser, ultrasonic and other energy transfer media. The 10-meter technology mentioned above, which uses electromagnetic waves as a medium, remains in the laboratory stage. At present, the commercial technology on the market is mainly magnetic field as the medium, which is divided into magnetic induction and magnetic resonance 2 technologies.
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 induction, such as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses induction.
If the charging efficiency is relatively normal and harmless to the human bodyIn terms of standards, the furthest distance that can be done now should be 5-10cm, and 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 are also 1 meter or 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.
The core magnetic resonance medium and long distance wireless charging developed by Spurotin can successfully achieve wireless charging within one meter.
Now the best thing is to put the phone on the launch pad, so squareThen control. Because distance plays an important role in the power of wireless charging. One meter apart, small coil. The power difference could be a hundred times higher. The phone can't stand that. This requires more complex control circuits. But the good news is that Core Tech will develop long-distance wireless charging products in the next two years. The goal is to go far, close enough.
1, generally around 0.9-2 meters of high-power wireless charging transmissionWireless charging technology can be divided into two ways of low-power wireless charging and high-power wireless charging. Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses induction.
2, the distance is greater than 10 cm, the conversion efficiency is only about 60%, that is, the sent power is 1000W, the received only 600W.
3, if according to the charging efficiency is relatively normal, harmless to the human body in terms of standards, now can do the farthest distance should be 5-10cm, the domestic goose familyTechnology, 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 are also 1 meter or 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.
4, wireless charging distance mobile phone and charger can not leave more than 10cm, the closer the effect is better. Wireless charging technology has always been only related to "small" mobile devices such as smartphones and small-size tablets. However, one of the three major wireless charging camps, A4WP (" Wireless charging Alliance "), has recently announcedThe technical standard has been upgraded, and the charging power supported has been increased to 50 watts, which means that high-power devices such as laptops and tablets can also achieve wireless charging.
5, the core magnetic resonance long distance wireless charging developed by Spuroting can successfully achieve wireless charging within one meter.
6, at present, the main wireless charging standards in the consumer field include the three major standards of the wireless Charging Alliance Qi, 4AWP and PMA. In terms of market size, Qi is undoubtedly the most popular, and the latest standard of Qi can achieve a wireless charging distance of 7 to 45 mm.It's a small breakthrough. A4WP's wireless charging technology, called "Rezence", uses resonant coupling technology, and although it has occasionally appeared at some consumer electronics shows, it has not yet been officially commercialized.
2, the core magnetic resonance long distance wireless charging developed by Spurotin can successfully achieve wireless charging within one meter.
3, currently known reports, the farthest distance is 10 meters, the use of electromagnetic wave technology. The existing wireless charging technology uses magnetic field, electromagnetic wave, laser, ultrasonic and other energy transfer media. The 10-meter technology mentioned above, which uses electromagnetic waves as a medium, remains in the laboratory stage. At present, the commercial technology on the market is mainly magnetic field as the medium, which is divided into magnetic induction and magnetic inductionMagnetic resonance 2 techniques.
4, wireless charging distance mobile phone and charger can not leave more than 10cm, the closer the effect is better. Wireless charging technology has always been only related to "small" mobile devices such as smartphones and small-size tablets. However, A4WP (" Wireless Charging Alliance "), one of the three major wireless charging camps, recently announced that its technical standards have been upgraded, and the charging power supported has increased to 50 watts, which means that high-power devices such as laptops and tablets can also achieve wireless charging.
5, the wireless charger distance produced by different manufacturers will be different, generally speaking, in 2Effective charging can be achieved within 3 meters.