1. The steps are as follows: First cut the end of the USB data cable connected to the mobile phone with scissors or a 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 lines of green, red, white and black, and the green and black oneCut off two of them, and cut off a small section of insulation between the red and green ones to expose the copper wire.
The number of wireless charging coils is based on the number and size of the device to be charged by the charging device. In theory, the more coils there are, the more efficiently the device can be charged, because the device can receive the charge at any location. However, if the number of coils is too large, it will increase the cost and volume, which is not practical or economical. Therefore, the appropriate number of coils should be selected according to different charging needs.
No. Each wireless charging coil will have a certain amount of energy loss, increasing the number of coils will lead to a decrease in the overall charging efficiency, more coils will increase the energy loss and mutual interference, thus reducing the efficiency of wireless charging; And increasing the number of coils requires more coils and associated circuits to be installed in the device, which increases design complexity and cost.
Magnetic resonance charging, the principle is the same as the resonance principle of sound. Coils of the same vibration frequency arranged in a magnetic field can exchange energy with each other. If the coil is large enough, long-distance transmission is also possible, but high efficiency, miniaturization is more difficult.
According to the principles of physics, the stronger the electromagnetic coil will emit the stronger the magnetic field, and then the reception of the mobile phone is also related, the stronger the magnetic field, then the ability to charge will be stronger.
Wireless charging base to increase the coil, or do not modify it, you increase the coil not only did not play a good effect but affect the speed of charging, increase the coil is equal to increase the resistance, it will make the current slow, the coil is proportionally wound, too much or too little can not, coil wound less, there will be damage to the parts, resulting in parts burned spark, For some do not arbitrarily modify the wireless charging base.
The working principle of the wireless charger: The electromagnetic induction principle is used, and the energy coupling through the coil is realized. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
The principle of wireless charging mobile phone is: electromagnetic induction principle, electromagnetic induction type noWire charging: When the current of the power supply passes through the coil (the power supply coil of the wireless charger), a magnetic field will be generated, and other unenergized coils (the electric coil of the mobile phone) will be close to the magnetic field, and the current will be generated to charge the mobile phone.
electromagnetic induction. The charging base and the mobile phone terminal have built-in coils respectively. When the two are close, the generating coil generates a certain current in the mobile phone receiving coil based on a certain frequency of alternating current through electromagnetic induction, thereby transferring the point energy from the originating end to the receiving end, and then starting to supply power to the mobile phone from the charging seat. Magnetic resonance.
1, not necessarily. The wireless charging system mainly adopts the principle of electromagnetic induction, and realizes the energy transfer through the coil energy coupling. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
2, the electromagnetic coil used in the field of wireless charging is also related to the improvement of the wireless charging efficiency of the entire system, but the coil itself has power lossCost. Wireless charging coils need to be arranged on both the transmitter and the receiver, and low loss coils can greatly improve the efficiency of wireless charging. Other green wireless charging boards use fast charging coils, with a conversion efficiency of 76%, which is in line with the Qi wireless charging standard of iPhone 8 and iPhone X, and can be well adapted.
3, through the power supply module after the output of direct current through 2M active crystal inverter into high-frequency communication power supply of low winding. By coupling the energy of the two inductors, the electrical output of the secondary coil is changed into direct current through the receiving conversion circuit to charge the battery.
4, select high-power high-frequency triode, such as TV tube. If the power is not large, you can choose the medium power tube, the field effect tube.
Wireless charging coil you can find Shenzhen Jin Haode, Jin Haode inductance in the inductance industry has been for many years, the old brand, whether it is a product or reputation is very good, reasonable price, good product quality, delivery is fast, the production of coil inductance is sufficient, good quality, stable performance, several do notLine charging manufacturers are looking for them to cooperate, you can go to understand.
The receiving end and the receiving end charge have the following differences: The function is different: The receiving end is dedicated to receiving signals or data, and the receiving end charge is used to charge the device. Different uses: The receiving end usually refers to the device that receives wireless signals or data, such as mobile phones, televisions, wireless headphones, etc. Receiving charge refers to the charger or charging dock used to charge electronic devices.
However, Huawei clearly sees the potential in this, and in April 2020 submitted a proposal called "long-range wireless charging transmitter, receiver and wireless charging.The invention patent of "System" (CN112689938A). The patent reveals that Huawei's air separation charging technology involves the precise design of the transmitter end. The transmitter processor generates a composite signal based on the control signal and the power signal, and the baseband RF conversion unit converts the composite signal into an RF signal and transmits it through the transmitter antenna.
The wireless charging solution is mainly composed of the receiving end and the transmitting end. The transmitting end is connected with the power supply and is responsible for sending electrical energy, and the wireless transmitting coil is responsible for sending energy out. The receiving end is generally installed on electronic products and is responsible for receiving electrical energy. In general, wireless charging solutions