1, and now, the Japanese media has brought more exciting news: a remote charging technology based on radio waves is gradually becoming practical in Japan, its principle is similar to Wi-Fi, can be 10 meters away for the machineDevices such as robots, electronic price tags and smartphones provide power. U.S. wireless power provider Ossia, along with companies such as Energous and Powercast, reportedly plans to launch the service in Japan in 2021.
2, so this is why the phone can not be charged when it is a little far away from the wireless charging pad. The electromagnetic resonance type is simply understood as the "upgraded version" of the electromagnetic induction type, which is essentially through the technology of electromagnetic resonance, in the case of loose coupling, to improve the electromagnetic induction transmission efficiency, so as to achieve a longer transmission distance while ensuring efficiencyElectromagnetic induction. The charging base and the mobile phone terminal respectively have built-in coils remote wireless charging . When the two are close to remote wireless charging , The generator coil generates a certain current remote wireless charging in the receiving coil of the mobile phone based on a certain frequency of alternating current through electromagnetic induction, thereby transferring the point energy from the source to the receiving end remote wireless charging , and begins to supply power from the charging seat to the mobile phone. Magnetic resonance.
2, wireless chargingThe principle is mainly electromagnetic induction and wireless electromagnetic wave technology. The principle of electromagnetic induction is the basis of wireless charging. Electromagnetic induction occurs when a magnetic field is generated between a charger and a mobile device. The alternating current generated at the charger end will create eddy currents in the magnetic field, and the receiving coil at the mobile device end will sense this eddy currents. In this way, power is transferred from the charger to the mobile device. 3, 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 equipment (charger) willThe energy is transmitted to the electrical device, which uses the received energy to charge the battery and at the same time for its own operation.
4, the basic principle of wireless charging is to convert the current into a magnetic field, and the magnetic field is transmitted through the air and converted into a current to be transmitted to the intelligent terminal. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
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 2A kind of technology. The WattUp Mid Field transmitter, developed by SAN Jose startup Energous, is a long-range wireless charging system that can charge devices up to 3 feet away. This is a significant improvement over current smartphone wireless chargers, which require the device to be in direct contact with the charger, limiting utility.
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. smallPower 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.
The world's first "long distance" wireless charging technology certification, the technology from Energous's charging product WattUp Mid Field, can transmit power within 1 meter, that is to say, in the future we can put the charger on the bed, and then within a meter can automatically charge. And can support multiple devices for long-distance charging at the same time.
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 uses electromagnetic waves as the medium and stops nowStay in the lab 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.
New breakthrough in wireless charging technology: Wi-Fi charging is realized in the near future The development of wireless charging technology has made remarkable progress, and wireless charging of mobile phones has become the norm in daily life. And now, the Japanese media has brought more exciting news: a remote charging technology based on radio waves is gradually moving toward practical use in Japan, its principle is similar to Wi-Fi, can be 10 meters away for robots, electronic price tags and smartphones and other devices to provide power.
is next to the transmitter), at the same time, they are also working on long-distance wireless charging, which will be an emerging market. In fact, the current technology can achieve effective power transmission within a range of 3 feet to 4 feet, but this also needs to go through the relevant organizationVerify. I believe that in the next 5 to 10 years, or even sooner, long-distance wireless charging will enter everyone's life.
2. The core magnetic resonance medium and 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 resonance 2 technologies.
4, wireless charging distance from the phone and chargingThe device can not be more than 10cm away, 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.
The distance of wireless chargers produced by different manufacturers will be different, generally speaking, effective charging can be achieved within 2 to 3 meters.
Generally about 0.9-2 meters high-power wireless charging transmission distance of up to 5 metersWireless 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.
The efficiency of wireless charging equipment 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.
Currently known reports, the farthest distance is 10 meters, usedIt's the technology of electromagnetic waves. 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.
The core magnetic resonance medium and long distance wireless charging developed by Spurotin can successfully achieve wireless charging within one meter.