1, the number of wireless charging coils is based on the number and size of the charging device to be charged. 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.
2, no. Each wireless charging coil will have a certain amount of energyIncreasing the number of coils will lead to a decrease in the overall charging efficiency, and 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.
3, 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.
4, is the greater the inductance. The larger the wire diameter, the electricityCan end. 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, by using the magnetic field generated between the coils, the magical transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment. Most current chargers, such as the iPad and iPhone, charge the device's internal battery through direct contact with a metal wire. Wireless charging technologyThe advantage lies in convenience and versatility. The disadvantages are low efficiency and can only provide electrical energy.
3, wireless charging base and wireless charging mobile phone (or tablet, headset) respectively have built-in coils, when the wireless charging base is energized, alternating current flows along the coil of the charging base, resulting in a changing magnetic field, the magnetic field direction is perpendicular to the coil plane, when the mobile phone (or tablet, headset) is close to the wireless charger, The phone's internal coil generates an induced current in the changing magnetic field to charge it.
4, the most common wireless charging method is to use the principle of electromagnetic induction, through the primary and secondaryThe coil induction generates an electric current, which transfers energy from the transmitting end to the receiving end. This approach has been achieved by the Wireless Charging Alliance (Wireless? The Power? Consortium; WPC).
5, because the mobile phone itself does not have a wireless receiving device, so it must stick a receiver. Now the common principle is the Tesla coil, there are also a small number of magnetic resonance technology.
Vertical wireless charger adopts classic base and support board design, simple and dignified. Product parameters show that it supports dual coil output, moderate size, using PC ABS material. The internal configuration of FCC, CE, ROHS, Prop65 and other certifications to ensure safety and reliability. The smart design of the support board can stabilize the mobile phone, which is convenient to watch TV series or receive information, and improve the user experience.
PYS Pengyuansheng High-tech Co., Ltd. has launched a 5000mAh magnetic wireless charging mobile power supply designed for iPhone 12 users to meet outdoor continuanceAircraft charging requirements. This product is small, easy to carry, with USB-C interface, support 20W two-way fast charge and wireless charging function, whether wired or wireless can meet the user's charging needs, practicability is extremely high.
Rigorous quality assurance After FCC, ETL and other authoritative certification, the quality of Pengyuansheng charger has been fully guaranteed. Its simple design, compared with Apple 30W charger, is more lightweight, does not take up space, showing a high sense of design. The dismantling process reveals its inner secrets, using the South Core SC3021D master chip, which is a high-frequency QR architectureChip, the characteristics of high cost performance make people bright.
After disassembly, the charger adopts the high-frequency QR switching power supply architecture, and the core components include the SC3021D and SC3503 controllers of Nancore, as well as the Innosec INN650DA04 gallium nitride power tube, which ensures high efficiency and stability. In terms of electrolytic capacitors, the products of Yongming and Acon are selected to ensure the filtering performance. Protocol chip selected cloud silicon semiconductor XPD737, integrate a variety of fast charge protocols, improve user experience.
The basic principle of wireless charging is to convert the current into a magnetic field, which is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. 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: electromagnetic induction. The charging base and the mobile phone terminal have built-in coils, and when the two are close, the coil is received by the mobile phone through electromagnetic induction based on a certain frequency of alternating currentA certain current is generated in the coil, which transfers the point energy from the originating end to the receiving end, and begins to power the phone from the charging seat. Magnetic resonance.
Because the energy is transmitted between the charger and the electrical device by inductive coupling, the two are not connected by wires, so the charger and the electrical device can be exposed without conducting contacts. Wireless charging mainly uses the principle of electromagnetic induction, magnetic resonance and radio wave technology.
Wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, etc. 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.
Wireless charging mainly uses electromagnetic induction, magnetic field resonance, radio waves, electric field coupling and other principles. Wireless charging because of the magnetic field between the charger and the electrical device to transfer energy, bothThere is no wire connection between the charger and the electric device, so that no conductive contact can be exposed.
Electromagnetic induction: The fundamental principle is to use the principle of electromagnetic induction, similar to a transformer, the primary coil of a certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain current, thereby transferring the energy from the transmission end to the receiving end. The conversion efficiency is high, the cost is cheap, but the transmission distance is short, and it is easy to be affected by the placement.
1. The precautions for winding coils with wireless charging coils mainly include the selection of coils with different frequency characteristics, the selection of magnetic cores of different materials, and the consideration of parameters such as inductance and distributed capacitance of coils. In the wireless charging receiving coil, according to its working characteristics in the audio segment, silicon steel sheet or permalloy is usually selected as the core material.
2, Finally, after confirming, put the phone on the wireless charger, it will display the charging prompt, it is OK. Precautions for wireless charging: Do not place metal objects, magnetic stickers, magnetic cards and other foreign objects between the mobile phone and the wireless charger (such as the car magnet attached to the back of the mobile phone)Stand iron), the phone may not charge properly or overheat resulting in damage. Place the mobile phone correctly. If the wireless charging coil deviates too much, the charging efficiency may be low or it cannot be charged.
3, first of all, according to the needs of the circuit, select the winding method: First of all, determine the size of the inner diameter. Then according to the inductance value and resistance and other factors to determine the coil layer number, height, outside diameter and so on. Wireless charging coil is suitable for short wave, medium wave circuit, its Q value can reach 150-250, and has high stability.
4, wireless charging base to increase the coil, or do not modify it, you increase the lineThe circle not only does not have a good effect but affects the speed of charging, increasing the coil is equal to increasing the resistance, it will make the current slow, the coil is proportionately wound, too much or too little can not, the coil is wound less, there will be damage to the parts, resulting in parts burned spark, because do not be free to modify the wireless charging base.