1, the procedure is as follows: Place the mobile phone or device on the charger that supports NFC wireless charging, and ensure the deviceThere is sufficient contact area between it and the charger. The charger sends an NFC signal to the device, and the device receives and recognizes the signal. The device sends a request to the charger to start charging. The charger will start sending a wireless charging signal to the device, which will receive it and start charging.
2, Huawei mobile phones that support NFC function and wireless charging function are: Huawei Mate 40E Pro, Huawei nova 9, Huawei Mate X Huawei P50 Pro, Huawei Mate 40 Pro, Huawei Mate 30 Pro 5G, etc.
3, the nfc function is not capable of reverse charging. Reverse charging refers to the electromagnetic wave emitted by the wireless coil to charge other devices that support wireless charging. Simply put, the wireless charger is built into the mobile phone, but the power is relatively small, can only be used for emergency. nfc refers to wireless communication technology, which is a feature of mobile phones that enables data interaction through close device contact.
4, support NFC and wireless charging models are: Huawei P30 Pro, Huawei Mate 20 Pro, Huawei Mate RS warrantyAre there any requirements '> Wireless charging technology has requirements for the number of pcb layers
1, for example, for the 6-10 layer of memory module PCB design, the choice of 10/20mil (drill/pad) hole is better, for some high-density small size boards, you can also try to use 8/18Mil hole. Under the current technical conditions, it is difficult to use a smaller size of the hole (when the hole depth exceeds 6 times the diameter of the hole, it is impossible to ensure that the hole wall can be uniformly plated with copper); For the power supply or ground wire hole, you can consider using a larger size to reduce the impedance.
2In the range of ravg 0~0.08 m, the output power increases first and then decreases with the increase of coil turns; In the range of ravg 0.08~ 0.4m, the output power decreases first and then increases and then decreases with the increase of coil turns. For a fixed operating frequency, the quality factor Q mainly depends on the shape and size of the coil and the material used. Standard coil technologies (such as wire winding coils and PCB coils) generally specify quality factor values.
3, no matter what electronic products according to the reason, the fewer PCB layers, the worse the electrical performance. Reverse PCB layerThe more numbers, the better the electrical performance. In electronic products, the more PCB substrate layers, the better. Because the more layers of the PCB board, the more solid the foundation of the motherboard, the less interference between signals, to ensure that the electronic components on the motherboard work normally without interference in harsh environments, and the longer the service life.
4, most of the host board is a 4 to 8 layer structure, but technically, the theory can do nearly 100 layers of PCB.
5, if some board guide holes appear on the front of the PCB board, but can not be found on the back, then it must be 6/8 layer board. If PCBThe same pilot hole can be found on both the front and back of the plate, and it is naturally a 4-layer plate. However, many board manufacturers currently use another wiring method, that is, only some of the lines are connected, and the buried hole and blind hole technology are used in the wiring.
2, wireless charging Qi certification content: including compliance testing (Compliance test and Interoperability Test. The compliance Test was conducted by the Authorized Test Lab (ATL) with 5 samples.
3, do wireless charging Qi certification first if the WPC wireless charging alliance members, and then apply for QI ID, the list of member costs is as follows: WPC charging alliance membership fees in July 2010 Qi standard 0 released, the current version is V4, WPC charging alliance is expectedThe latest version V3 will be available in the fourth quarter of 2019.
2, according to Lei Jun, soon, millet self-developed air separation charging can also be used for smart watches, bracelets and other wearable devices. In the future, the living room, including small smart home products such as speakers and lamps, can realize wireless power supply design, get rid of the cord bondage, and truly realize the wireless living room. For now, Xiaomi's first self-developed air separation charging system has a long way to go, and it has not yet been mass-produced.
3, so 2021In January, Xiaomi released the air charging technology, as Lei Jun, president of Xiaomi, said on the official micro: Air charging technology is like science fiction movies, holding a mobile phone into the living room, to achieve air charging. The air charging launched by millet has several advantages, which solves the pain points of air charging. For example, support for multiple devices charging at the same time, which means that a charger at home to meet the charging needs of several mobile phones.
4, millet officially released the space charging technology, the science and technology digital industry ushered in a new breakthrough Millet CEO Lei Jun revealed on the personal public number that millet has successfully developed and launched the space charging technology, the technology in millet 11 can be implemented. The biggest highlight of this technology is its amazing effective distance of several meters, even if there is an object blocked, it can maintain stable charging, achieving true wireless charging freedom.
5, millet ldquo air separation charging technology is actually realized by relying on millet self-developed air separation charging pile, which has 5 built-in phase interference antennas, which can conduct millisecond spatial positioning of the mobile phone and accurately detect the location of the mobile phone. The phase control array composed of 144 antennas can transmit the millimeter wave to the mobile phone through beamforming. And the hands.
1, [Pacific Auto network] 5W wireless fast charge standard. For high temperature viscosity, 30 is generally used, but if it is often driven on traffic congestion road conditions, the vehicle has a long service life, and the heavy vehicle long-distance transportation, etc., the oil viscosity can be appropriately increased, such as using 0W40 oil.
2, support the original car LIN bus protocol through the original car LIN bus protocol, the product with the atmosphere light can perfectly synchronize the effect of the original car atmosphere light, including color, brightness is the following loading effect diagram perfect support QIWPC4 wirelessCompared with the vast majority of products sold on the market, the multi-tag BMW 5 Series (parameter | picture) wireless charging module perfectly supports Samsung 10W wireless fast charging standard, and the charging efficiency can reach 2 times of ordinary wireless charging. 3, the wireless charging system provides 2 kilowatts of charging power, which means that only 5 hours, the new 5 series plug-in hybrid version can complete the full charge state. In contrast, the i Wallbox offered by BMW has a slightly higher charging power of 7 kilowatts, and the full charge time is reduced to 3 hours. The wireless charging system not only improves convenience, but also focuses on safety. BMW's wireless charging system is newThe charging problem of energy vehicles provides an innovative solution.
4, charging method The first version of the BMW 325li is equipped with a USB interface in the front and rear seats, as well as innovative wireless charging function. Wireless charging technology comes from radio energy transmission, of which the common Qi charging method of mobile phones belongs to low-power electromagnetic induction. For high-power needs, such as electric vehicles, resonant technology is usually used, which charges the battery through energy exchange and supplies power to the charging device itself.