Millet 55W vertical air-cooled wireless charging using PC flame retardant material plastic shell, fuselage edge clear end Angle arc transition, support board is black, base sandblasting treatment is gold. From the front, the front end of the base is equipped with LED indicators, and the support board is layered above and below, using different designs. Indicator light is green when working.
The millet 55W vertical air-cooled wireless charger is equipped with a special bracket, which can be directly installed on the base, and is embedded, especiallyWell done! It can be removed at any time when not in use, because it is specially configured for the Mi 10 Ultra, and it is generally not used.
Mi 9 Pro supports 55W vertical air-cooled wireless fast charging, but there will be no fan rotation during the charging process. This is normal, because during fast charging, the phone will emit some heat, but it is not too high, so it does not need a fan to turn to dissipate heat.
Millet vertical air-cooled wireless charger (55W black) 199 yuan at present millet maximum power (charging speed) wireless charger, if the phoneIs 30W or 33W wireless charging power, then it is recommended that you "redundant" to buy this high-power wireless charger, because the mobile phone upgrade speed is faster, and wireless charger this product can be used for several years, in the future for a new mobile phone can also do power coverage.
Millet 5G era charging technology hit a new high, millet 9 Pro 5G version will be the first to carry 30W super wireless flash charge, this charging speed far exceeds the traditional wired charging. Xiaomi launched a vertical air-cooled wireless charging 30W accessories at this conference, with a maximum power of up to 30W and strong compatibilityLine charging circuit
1, Wireless charging emission circuit board (PCBA) is an electronic component used to achieve wireless charging function. It is one of the core components of the wireless charging system, responsible for converting electrical energy into wireless energy signals and transmission. PCBA usually consists of multiple components, including power supplies, inductors, circuit control chips, filters, and connectors.
2, wireless charging circuit to use LC output reasons are as follows wireless charging decoder circuit : wireless charger charging method is to use The wireless charging and decoding circuit generates an induced magnetic flux between the wireless charging board and the magnet induced on the mobile phone, and converts this magnetic force into an electric power for current transmission.
3, electromagnetic induction primary coil of a certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain current, so as to transfer energy from the transmission end to the receiving end.
4, the current wireless charging method has electromagnetic induction charging, magnetic resonance charging, radio wave charging, electric field coupling charging four, each charging method of the technical scheme is different. Electromagnetic wireless charging isBy using the induced magnetic flux generated between the inductive magnet on the power supply side and the electric receiver side, the magnetic force is converted into electrical energy and then transmitted.
Electromagnetic induction type primary coil a certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain current, thereby transferring energy from the transmission end to the receiving end.
The principle of wireless charging of mobile phones in the general sense is that electrical energy is converted into magnetic field, magnetic fieldThe process by which magnetic fields are converted into electrical energy through air transmission. The principle of wireless charging is somewhat similar to the understanding of the transformer in the popular sense, the transformer magnetic field coupling circuit is a magnetic conductor, the wireless charging magnetic field coupling circuit is air, and the magnetic medium is different. Wireless charging in the industry generally has four major technologies: magnetic induction technology, magnetic resonance technology, microwave technology and electric field coupling technology.
The so-called wireless charging technology only uses the electromagnetic wave induction principle and the related AC induction technology, and uses the corresponding coil to send and receive the induced AC signal at the sending and receiving end to charge. Not whatHigh tech, using magnetic fields! The charger has a coil, the battery has a coil, and when you put it close, it forms something like a transformer. But it's very inefficient, and it's very radioactive.
You have normal no-load voltage and low on-load voltage. The no-load voltage is normal, indicating that your wireless charging transceiver circuit is normal, but the voltage is pulled down after the load, the most likely is that your coil matching is not good, resulting in insufficient power received by the output endThis will pull down the charging voltage.
Wireless charging technology is the use of electromagnetic induction principle, in the sending and receiving end with the corresponding coil to send and receive the induced current to charge.
There seems to be a problem, the backfilling problem. However, the output end of the wireless charging receiving module is generally through bridge rectification, and the reverse charge is not charged, but the working frequency of the wireless charging transmitting module is higher, and the received charging power signal will still be short-circuited by the high frequency of the charging head. The solution is to add a high-frequency diode to the output of the wireless charging receiving module for isolation.
What are the components of wireless charging? The left side is TX, that is, the transmitter, and the corresponding product is the wireless charging transmitter. On the right is Rx, that is, the receiving end, and the corresponding product is a mobile phone with wireless charging function. TX end: MCU, power full bridge, and LC resonant Tank composed of inductors and capacitors, where the inductor is the transmitting end coil.