1.85 euros. According to the query of X technology, the internal resistance of wireless charging coil is 0.85 euros. Wireless charging technology comes from radio energy transmission technology, which can be divided into two ways: low-power wireless charging and high-power wireless chargingElectromagnetic induction is often used.
2, wide impedance range, to meet a variety of needs of the inductance of the wireless charging coil is usually at the micro hen level, the test frequency is in the kHz range, which requires a wide and accurate measurement range. The E4980A/AL has a wide impedance range from 4 milliohm to 100 milliohm, and can cover this band with 10% accuracy, making it particularly suitable for the precise evaluation of wireless charging coils.
3, in the range of ravg 0~ 0.08m, the output power increases first and then decreases with the increase of coil turns; ravg is in the range of 0.08~ 0.4mThe output power decreases first and then increases and then decreases with the increase of the number 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.
4, the mobile phone wireless charger is probably about 50mm in diameter of the mobile phone end coil, the charger end is about 46 to 48mm in diameter, because of different mobile phone models may vary, but the best transmission method is the mobile phone end and the charging end coil size is the same.
5, wireless charging alsoThe use of good materials can reduce coil losses, which can greatly improve the efficiency of wireless charging. Optimizing line and component selection To reduce losses, you can optimize line and component selection to deal with. Streamline and optimize the line, and select good materials for components to reduce output losses.
The loss of components affects the internal resistance of wireless charging fast and slow components, and the conversion efficiency of the system 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.
Then, the existing several charging methods are listed, slow charge, fast charge, wirelessCharge and change the power station. The four kinds of high charging efficiency are fast charging pile (supercharging pile), which can obtain hundreds of kilometers of battery life in a short time; The most efficient mode, but the scope of application is limited, is the power station. These two efficient replenishment mainstream modes can not be replaced by wireless charging.
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. Four, electromagnetic waves decay by the square of the distance, so the distanceThe closer the distance, the more efficient the transmission.
In order to improve the efficiency of Huawei P60 wireless charging, you can try the following methods: Do not use the phone case. When charging, the phone case will hinder the transmission of electromagnetic waves, thus affecting the charging efficiency. Use original chargers whenever possible. The use of non-original chargers will lead to reduced charging efficiency or failure to charge normally. Do not use multiple wireless chargers to charge your phone at the same time, as this will affect the charging effect.
Charge the wireless charger by directly placing the phone screen facing up in the center of the charger or in the position suggested by the manufacturer.
Wireless charging source inside the installation of a electromagnetic coil , open the power switch, the electromagnetic circuit will be the power battery electrical energy into a large number of magnetic energy, and then use a reverse coil (international standard brick QI coil), receive this large number of magnetic energy, convert it into electrical energy, Through a metal output head, into the Hangzhou wireless charging coil wholesale our equipment reserve batteryMedium. Wireless charging Because electromagnetic transmission only needs to be transmitted in space, no medium is required, so wireless charging can be carried out.
Wireless mobile power working principle: is the use of electromagnetic induction, that is, when the current through the coil to generate a magnetic field, the formation of voltage, after the voltage will generate current for charging. You can charge your phone even without a cable. Wireless charging is a device or device with a built-in battery that obtains power through wireless induction. The technology stems from wireless power delivery.
The principle of wireless charging mobile power: magnetic energy is converted intoElectrical energy is based on the principle of induction cooker because wireless charging requires a sending end and a receiving end, so wireless charging mobile power supply is installed on the basis of conventional mobile power supply with a sending device, and the charging mobile phone supports wireless charging and has a wireless charging receiving coil.
Wireless charging mobile power, as the name suggests, you can charge your phone without a data cable! Here's how it works: electricity generates magnetism and magnetism generates electricity.
1, no need to set, iphone8 wireless charging only needJust put your iPhone 8 or iPhone 8 Plus on a wireless charger. Wireless charger is the need for external power, plug the charging head into the socket. Hold the iPhone8 in range of the wireless charger with the screen up and the back down.
2, plug the wireless charging receiving coil into the phone interface, just like the usual charging. Plug in the receiving coil. Connect the Qi wireless charging and transmitting device and then plug the charging head into the wall socket, and then connect the Qi wireless charging and transmitting device to the other end of the data cable. Put the phone down and all the work is ready,The phone can be placed on the wireless transmitter, or held in the hand, in the effective receiving range is OK. The exact extent needs to be tested by oneself.
3, prepare an Apple AirPower wireless charging pillow. Connect the Apple wireless charger AirPowe to a power source. Place the iPhone8 on the wireless charger AirPowe with the iPhone8 display facing up and the phone will charge itself.