Magnetic absorption of the magnetic shell. In the middle of the case is embedded a small ring holding wireless charging
1, wireless charger charging speed is slow, there are the following possibilities: 1, wireless charger wireless charging power itself is not large. 2, the wireless charging receiver of the mobile phone, the charging current supported is not large. It is recommended to change a high-power wireless charging board, such as a certain meter, which has more than ten coils, although it is not opened at the same time, the effect will be good.
2, low charging efficiency: compared with wired charging, wireless charging efficiency is low. This means usingHomes take longer to be fully charged. In addition, since wireless charging requires energy conversion between transmit and receive, it may lead to reduced battery life. Slow charging speed: Due to the low efficiency of wireless charging, the charging speed is relatively slow. This causes users to have to wait longer to complete the charge.
3, low efficiency: energy storage and delivery efficiency is less than real contact. Slow charging speed: Due to low efficiency, the charging speed is slow at the same input power. Although wireless charging can be unplugged, the distance between the phone and the charger is very small. But the loss of electromagnetic energy is still notSmall, the power received by the general mobile phone is about 75% of the power sent by the charger.
2, how is the principle of wireless charging separator: Wireless charging separator In mobile devices such as smartphones for wireless charging, the receiving coil equipped with ferrite separator is required to be as thin as possible. However, the properties and thickness of magnetic materials require careful design. This is because if the magnetic sheet is too thin, it will cause magnetic saturation problems.
3, soft magnetic material. The magnetic insulation sheet is a magnetic sheet auxiliary material of the coils at both ends of the wireless charger. It is a soft magnetic material sintered at constant high temperature and has high permeability and low magnetic loss factor. It is caused by the electric field thermal motion of the lattice of functional componentsElectron scattering and interactions between electrons absorb electromagnetic energy and convert it into heat.
1, wireless charging coil test requirements, such as 100 kHz/1V, where 1V refers to the excitation voltage, test frequency and supply voltage work together on the system, through the LCR tester analysis inductance, Q value and AC resistance. Coil design and production, silk-covered wire coil and multi-stranded wire coil are respectively used for the transmitting end, toLow cost, simple process, suitable for conventional product applications.
2, the steps are as follows: first, cut the end of the USB data cable connected to the phone with scissors or knife, and then cut a short section of the long end of the data cable into the incision, at this time you will see four green, red, white and black wires, cut the green and black two, and cut a small section of insulation layer in the red and green two respectively to reveal the copper wire.
3, the use of magnetic resonance technology principle, junior high school logistics textbooks have some knowledge, simply put: electricity generated magnetism, magnetic generated electricity! A magnetic field is generated through the coil and then through the receiving coil to magnetizeThe field is converted into electricity, which is why this wireless charging device often carries a thick base and a "phone case."
4, wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charging the mobile phone.
2, the type of ferrite by chemical composition classification Ferrite is a huge ethnic group, according to chemical composition classification, common spinel ferrite, magnetic lead ferrite and other compositeType ferrite etc. Each type of ferrite has its own unique chemical composition and properties. According to the application classification According to the different uses, ferrite can be divided into magnetic materials, microwave device materials, catalyst carrier materials, etc.
3, according to the different magnetic properties and applications, ferrite can be divided into: soft magnetic, permanent magnetic, gyromagnetic, moment magnetic, piezomagnetic and other five types. Soft magnetic materials Such materials are easily magnetized and demagnetized under weak magnetic fields, such as zinc chromium ferrite and nickel zinc ferrite. Soft magnetic ferrite is a kind of ferrite material with wide use, many varieties, large quantity and high output value.