Xiaomi first 40W wireless flash charging technology, charging speed is amazing Xiaomi Group vice president Chang Cheng announced that Xiaomi's first device equipped with 40W wireless flash charging has been officially exposed. The technology is the fastest in the industry, with a 100% charge in just 40 minutes for a device with a 4000mAh battery.
Xiaomi Group vice President Chang Cheng announced at 2 PM today that Xiaomi's first equipped with 40W noThe equipment of line flash charging technology was officially announced. The highlight of this technology is that for 4000mAh batteries, it takes only 40 minutes to achieve 100% charging. Xiaomi's wireless flash charge technology once again refreshed the speed record, 40W wireless flash charge to maintain the industry's fastest record, in the magic Mi 10 Pro battery to achieve efficient and low temperature charging experience, leading wireless charging into a new high-speed era.
Xiaomi 40W wireless fast charge first test: an incredibly efficient experience At two o 'clock in the afternoon, Xiaomi announced the birth of its 40W wireless flash charge technology, for 4000mAh battery, the official claim onlyIt takes 40 minutes for a 100% charge. The Sina phone is the first to bring detailed field tests, allowing us to explore the performance of this new technology.
Wireless charging application scenarios limited mobile phones want to wireless charging must use the charging base, if off the base, the mobile phone can not charge, which is the same as the wired fast charge to rely on the charging line and charging head. Cell phoneIt must be static, and it is impossible to play a game while charging.
Due to the heating problem in the electromagnetic conversion process, taking into account the safety of electricity and other factors, manufacturers have to control the power. This is also a reason for the gradual disappearance of wireless charging. After all, wired fast charge has developed to 120W, and the fast charge carried by most mobile phones is more than 60W, which has surpassed the wireless fast charge, so wireless charging has gradually opened the gap with wired fast charge because of the technical requirements of the equipment.
The main reason is that the wireless charging current is too small. Wireless charging is limited to material problems and technical problems causedThe efficiency is too low. Wireless charging is only suitable for use when sleeping, while watching and charging can not keep up. In addition, the wireless charger charger is too large, it is better to plug in the charger directly. The last one is that modern fast charging technology is unmatched by wireless charging.
1, due to the heating problem in the electromagnetic conversion process, considering the electricity safetyAll factors, manufacturers have to control the power. This is also a reason for the gradual disappearance of wireless charging. After all, wired fast charge has developed to 120W, and the fast charge carried by most mobile phones is more than 60W, which has surpassed the wireless fast charge, so wireless charging has gradually opened the gap with wired fast charge because of the technical requirements of the equipment.
2, charging power limited, charging technology between different brands is not interworking between the current mobile phone power update quickly, a day to increase a power, from the original 18W fast charge into a variety of fast charge power, there are 30W, 45W, 65W, and now there are 120W super fast charging power, which also leads to the current world of wireless charging board a lot of very mixed, if the wrong choice can not experience the full charging power. 3, because there is a heating problem in the electromagnetic conversion process, taking into account the safety of electricity and other factors, so in 2021, China's Ministry of Industry and Information Technology issued a technical requirement for wireless charging equipment, which has a clear provision: wireless charging rated power shall not exceed 50W. In order to comply with this regulation, manufacturers have to control the power. This is also a reason for the gradual disappearance of wireless charging.
1, Tesla acquired the German WIFERION, in the modified version of the Model 3 application of wireless charging technology, behind the logic is electromagnetic induction wireless charging. At present, the modified Tesla Model 3 can achieve a maximum of 12KW wireless charging power, the fastest one hour to make up 80 kilometers, full may take about 6 hours.
2, firstFirst, Tesla's wireless charging technology uses the principle of electromagnetic induction. The technology transmits energy through special electromagnetic fields, allowing Tesla cars to charge themselves when parked. This technology is not only efficient, but can also greatly reduce charging time. Secondly, the wireless charging technology of Tesla cars also has the characteristics of intelligence. 3, the charging process of Tesla takes about 12 hours, but when using a home charger, the voltage may drop due to the peak of the transformer load, which affects the charging speed. In order to increase efficiency, it is recommended to install a special wall-mounted charger, so that the charging time will be reducedid=' What is the principle of wireless charging technology? '> How does wireless charging work?
The use of electromagnetic induction principle for charging equipment, the principle is similar to the transformer, through the transmitter and receiver end set coils, the transmitter coil under the action of power to send electromagnetic signals, the receiver coil receives electromagnetic signals and convert electromagnetic signals into current, so as to achieve the purpose of wireless charging.
The basic principle of wireless charging is to convert the current into a magnetic field, which is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. The input will communicate when the system is workingThe mains is converted into direct current by the full bridge rectifier circuit, or the 24V direct current terminal is used 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 principle of wireless charging: electromagnetic induction. The charging base and the mobile phone terminal have built-in coils respectively. When the two are close, the generating coil generates a certain current in the mobile phone receiving coil based on a certain frequency of alternating current through electromagnetic induction, thereby transferring the point energy from the originating end to the receiving end, and then starting to supply power to the mobile phone from the charging seat. Magnetic resonance.
Wireless charging systemIt mainly adopts the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.