The first is field-coupled charging. First, there are two sets of asymmetrical electric dipoles on the phone and charging device. When they lean onIn the near future, the coupling phenomenon will occur to realize the transmission of current. The transfer efficiency is good, but there are distance restrictions, and large capacity charging stations are required. The second type is magnetic resonance charging, which is different from the above electric field. This method generates electrical energy through the resonance of the same frequency magnetic field generated by the resonators at both ends.
Wireless charger using radio wave transmission, radio wave is not only a kind of electromagnetic wave, its own can also transmit energy, and can penetrate the air, so that wireless power transmission is possible.
Wireless charging technology is mainly achieved through four ways: electromagnetic induction, magnetic field resonance, radio wave and electric field coupling. However, due to technical and cost limitations, all mobile phone wireless charging technologies are based on electromagnetic induction. Once it comes to wireless charging, the problem of conversion efficiency cannot be avoided. Based on electromagnetic induction wireless charging, the theoretical charging efficiency reaches 80%. But this is only the theoretical efficiency, the actual situation must be discounted.
Electromagnetic induction charging, very simple, and the principle of electromagnetic induction in high school is similar, wireless charging the charging base and the terminal are built with coils, so that the two are close to the charging seat and start to supply power from the charging seat to the terminal. A lot of wireless charging phones are based on this principle, noResonant energy transfer. Here's a picture for you. In the second half of this year, there is also a period of homemade wireless charging equipment, but the information is placed in the unit. I can't upload it.
If the iPhone wireless charging suddenly does not charge, it may be because sometimes unpredictable errors occur in the update of the iOS system, which will cause problems with the wireless charging function, usually as long as the restart can be solved. Sometimes the iPhone protective case is too thick will also lead to wireless charging, then you can try to remove the iPhone protective case, and then put back wireless chargingCharging on board.
The wireless charging power of the Star Road car is 10w, that is, the output specification of 5v2a, which provides great convenience for many mobile phone users who support wireless charging. As Chery's high-end medium and large SUV brand, Star Road Automobile is not only equipped with advanced wireless charging technology, but also shows excellent strength in power and space design.
A power of 10 watts, that is, 5v1a, can be used in the case of one hourCharge it to 1,500 milliamps.
w charger indicates that the maximum output power of the charger is 10W, that is, under the rated voltage of 5V, the charging current is 2A; The rated output voltage of the ordinary mobile phone charger is 5V, and the output current is 1 ~ 2A, so the output power is 5 ~ 10W, that is, the ordinary mobile phone charger has 5W and 10W.
This car wireless charging power 10w, output voltage 5v, current 2a. Many cars have wireless charging functions, and the wireless charging panel of most cars is in front of the shift lever. Many phones also support wireless charging. If you want to use a carWireless charging function, the phone must support wireless charging function. The 02 is a compact suv from Lake. The exterior of the car is very nice.
What is the wireless charging power of the star? The wireless charging power of Star Road is 10W, that is, 5V2A. For many owners, this feature is very convenient. Wireless charging function has become a trend in modern cars, and Star Road Automobile, as a high-end brand under Chery, also provides this function. At the same time, Star Road Car's flagship model Star Road Moon also supports wireless charging.
w Charging is slow. 10W charge refers to chargingThe output power of the device is 10W, that is, 5V2A voltage and current output. 10 watts of wireless charging is still relatively slow, an hour is estimated to be able to charge about 60% of the electricity, basically in about an hour and a half can be full of mobile phone batteries. In the case of the iPhone, the official charging time is five hours on a full charge. If you use a 10W charger, the full charge time will be slightly shortened.
1, kW. By querying BYD Seagull car official website show Wireless charging increases the current , and the power of wireless charging of Seagull mobile phone is 40kW. Wireless charging technology is a charging method using radio energy transmission technology Wireless charging to increase the current , can be divided into low-power wireless charging and high-power wireless charging two ways.
2, the maximum charging power can reach 40kW. Byd Seagull is equipped with NCM811 battery, the maximum charging current can reach 80A, the maximum charging voltage can reach 800V, its safety performance is very superior, it is equipped with wireless chargingIncreased current A large number of active and passive safety devices.
3, say the charging speed of this car, it is to support DC fast charging, the maximum charging power of 40kW, the power from 30% to 80% only half an hour. At the same time, it also supports external discharge, the maximum discharge power is 3kW. The above performance fully meets the standards of a conventional pure electric vehicle, and the experience does not drop in price.
1, the current is not a problem, want to do more can, but to ensure efficiency is more difficult, the efficiency you say should be similar to the mobile phone charging when 70%? In fact, the bracelet is also 1w power, I think users will not be concerned about the efficiency of the problem, will be mainly concerned about the charging speed, after all, even if the loss of more than 50% of the efficiency, a year's electricity is more than 1 yuan.
2, for different sports data recording, Huawei band 4 ProIt supports 11 targeted modes, namely outdoor running, indoor running, outdoor walking, indoor walking, outdoor cycling, indoor cycling, elliptical machine, rowing machine, pool swimming, open water swimming, free training, which can be said to be the most comprehensive sports mode in the bracelet industry, straight to the smart watch. In early October, the NFC Forum, the official organization for NFC standards, announced that the new "Wireless Charging Specification" (WLC) has been approved, and future smartphones can directly pass NFCThe function is charged. However, the use of NFC for wireless charging, the power and today's maximum 40W or even higher technology is not comparable.