2, wireless fast charging is a combination of wireless charging technology and fast charging technology, and the mainstream models on the market now support wireless fast charging technology. Wireless fast charging mobile phones are Xiaomi Huawei P40, Mate30, Mate30 pro and so on. Wireless charging technology Because the charger and the electric device transmit energy by magnetic field, the two are not connected by wire, so the charger and the electric device can beClass: With and without power frequency (5 Hz) transformer, can be divided into two categories.
The actual output voltage of the volt battery charger is rated at 5 volts, so the rated power of the charger should be 5*5=25 watts. 5A indicates that the data line supports the maximum 5A current, and the power generally refers to the charger, because only the current and voltage can be said to be power, for example, if the charger is 5V voltage, the power of the charger is 5V times 5A, that is, 25w.
watts. The input power of the calf electric car charger is 25w and the output power is 25w, the US of the calf electric carPort B power is 25 watts. The USB interface is used to charge smart phones and is a kind of USB socket.
The input power is 25w. Calf electric car B2, stylish and cool appearance, with a sense of youth fashion, the car uses a closed panel design. Calf electric car charger input power is 25w and output power is 25w. The USB port power of the calf electric car is less than 25 watts.
For example, 48V20AH battery charging, according to the battery fully discharged (that is, the rated capacity) after a charge needs to be charged 20*05=21AH, the average chargeThe voltage is 56V, the total power consumption is 56*21=0836KWH, the general charging time is about 8 hours, so the average power consumption per hour is 0.135 KWH.
The batteries that supply power to the motor are generally 36V and 48V. Simple car running 20 speed power demand 90-120W, 24V car light weight, according to 100W calculation motor efficiency 0.8, input power 100/0.8 = 125W, 125/24=2A. The actual capacity of the current 10AH battery is slightly greater than 10AH, the electric and noisy car can travel for 2 hours, and the speed of the 40KM scooter can be extendedTo reach 25, the car weight increases and the BMX resistance increases the impact of greater speed.
V means that the input voltage is 220 volts, and W means that the power of the charger is 3 watts. The so-called fast charge, is to charge with a large current, the battery will soon be full, but the life of the battery and the use of time will have a certain impact, the specific impact, it is not easy to say clearly, anyway, everyone says so. Therefore, when there is no emergency, it is better to use the standard 170mA charge; On the other hand, if you need to use your phone urgently, use fastCharge up.
"W" is the abbreviation of the unit of electrical power "watt", 40W is 40 watts. The greater the power, the stronger the charging capacity. Because: power is the product of voltage and current, and the charging voltage of the mobile phone is generally 5 volts or 9 volts, under the same voltage, the greater the power represents the greater the charging current, which is equal to the faster the charging speed.
Flash charge is to improve the charging current, fast charge is to improve the charging voltage, but the essence of both is to improve the charging power, and the speed of the two charging methods is not much different. Flash charge is low voltage fast charge, fast charge is high voltage fast charge. Both fast charge and flash charge speed up the batteryCharging speed technology, but the technical principle is slightly different. Fast charging is nothing more than increasing the power of charging.