Component loss affects wireless charging speed slow components conduction resistance is small, the system conversion efficiency is high. The selection of components such as triode with small internal resistance can greatly improve the efficiency of wireless charging. However, with low internal resistance, the cost will be relatively high.
Wireless charging efficiency is related to power, the greater the general power generated by the greater the magnetic field range the closer the distance the better the efficiency, and the closer the receiving coil and the sending coil, the higher the energy conversion efficiency, according to the size of the distance power efficiency from 100% to 0%. If the distance is greater than 10 cm, the conversion efficiency is only about 60In other words, the sent power is 1000W, and the received power is only 600W.
Wireless charging transmission, receiving module component specifications, the distance between the coil, the interval material material will have an impact on the charging efficiency, there are a lot of wireless charger program related information available for query, your wireless charging program for what purpose, different technical solutions charging efficiency is very different.
Factors that affect the wireless charging loss rate include physical distance, moving distance, track movement, geographical location, charger and receiver characteristics, and whether there are obstacles. The farther the distance and the moreObstructions reduce the efficiency of wireless charging, leading to higher attrition rates. At the same time, higher quality chargers and receivers, as well as the right geographical location, can help reduce the attrition rate.
GND is ground. The common negative electrode. This stuff improves efficiency. One, coil material. With two-wire structure, the effective conductive area decreases due to the skin effect of high frequency conduction. Therefore, the coil can be wound with multiple strands of wire (insulation between wires). Three use low voltage drop diodes. Fourth, the electromagnetic wave is attenuated by the square of the distance, so the closer the distance, the higher the transmission efficiency.
1, wireless charger usage: the mobile phone standard charger and data cable connected to the wireless charger, and then the mobile phone is/horizontally placed in the wireless charger base left and right center position, you can achieve wireless charging, the indicator light will have a breathing effect, 5 seconds after the extinguish, plug and play, convenient and quick.
2, vivo mobile phones can be wireless charging, but not all vivo support wireless charging. Current branchModels with wireless charging are: iQOO11Pro, X90Pro, X90Pro, XFold, iQOO10Pro, X80Pro Snapdragon, X80Pro Guet, XFold, XNote, iQOO9Pro, X70Pro, iQOO8Pro.
3. vivo X100 supports wireless charging. vivo X100, a high-end smartphone under the vivo brand, is equipped with advanced wireless charging technology. This technology allows users to do so without the need to plug in a physical charging cableCharging mobile phone batteries through wireless chargers greatly improves the convenience of charging. 4, although the wireless charging technology is not very advanced, or to be placed on the wireless charger to charge, but it is also a technological innovation, so many new mobile phones have begun to use, then vivox80pro support wireless charging? Does vivox80pro support wireless charging: vivox80pro supports wireless charging. It is expected to get 50W wireless charging and 80W wired fast charging using a 4500mAh battery.
5. Support. On the basis ofThe query Pacific Computer network shows that vivopad2 supports the wireless charging technology of the Qi standard, which can transmit electrical energy to the device through electromagnetic induction, so as to achieve wireless charging. vivoPad2 tablet design, display, core performance and battery life are very good, very smooth to use, but also has a very powerful function.
The power of the domestic outdoor ap is 500 milliwatts, at UMThe maximum transmission power of the ordinary router is 500 milliwatts, if you buy an Asus router, the region can choose Australia to full power output, coverage is also the best.
The regulations of China's Radio Management Committee: the transmission power of wireless LAN products cannot be greater than 100mW. General products do not show, the description is within the national standard.
There are many parameters of wireless AP, but there are some key indicators that need to be looked at: power, general household equipment in 100mw, corresponding to 20db, outdoor equipment 500mw, corresponding to 27db, which is directly related to the coverage of the fanWring. EVM, can be understood as signal quality, signal strength is also good quality. Stability, now the equipment is generally more mature, this need not be considered too much.
The transmission power of the WLAN wireless card is even smaller, generally about 40 milliwatts, and the distance from the human body is relatively far, unlike the mobile phone attached to the body, reaching the human body is generally less than 1 milliwatt. Another pair of human radiation in a wireless network comes from a wireless AP or wireless router that emits wireless signals, but the transmitting power of a wireless LAN access point AP is generally not more than 100 milliwatts, which is only equivalent to a small smart phoneThe working power is larger than that of the mobile phone, and the electromagnetic field energy radiated is larger than that of the mobile phone.
Reporter conducted a test, the results show that the wireless charger does exist radiation, the value is small but not without. Tests show that the radiation value of wireless chargers is less than that of mobile phones, such as Sharp SH8010C and Samsung i579, but when used with other electronic devices such as computers, WiFi, the cumulative effect cannot be ignored. In extreme cases, values above 2,500 can have a significant impact on health.
Radiation is certain, otherwise the energy cannot be transmitted through space. A radio for chargingThe wave must be larger than the radiation power of the phone itself, otherwise the charging efficiency is too low. Calculated with a 1000mAh capacity lithium battery, 50% of the charging capacity is about 7~8Wh.
At present, some special mobile phones can be charged with wireless chargers, but the current technology can not be compared with the charging efficiency of wired chargers, and many wireless chargers are immature technology, charging will make the mobile phone unusually hot. Is the radiation value of wireless charger really greater than that of mobile phone? The staff of Dajiaoting branch of Beijing Telecom business Hall tested this. The staff took out a high-sensitivity radiation meter.
The body has a strong response to electric fields, but the body has almost no response to magnetic fields, so this system does not affect human health. As an electronic charging product, the charger itself can not avoid radiation, so it is inevitable that the wireless charger has radiation. However, the current power of the wireless charger is very small, the charging time is longer, the radiation generated is also small, and it should not cause great harm to people.