The principle of wireless charging: electromagnetic induction. The charging base and the mobile phone terminal have built-in coils respectively. When the two are close, the coil generates a certain amount of electricity in the mobile phone receiving coil through electromagnetic induction based on a certain frequency of alternating currentThe flow, which transfers the point energy from the originating end to the receiving end, begins to power the phone from the charging seat. Magnetic resonance.
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.
ElectromagneticInductive wireless charging: This way of charging is to use the inductive magnetic flux generated between a wireless charging board and the induction magnet on the mobile phone, and convert this magnetic force into an electric power for current transmission.
The principle of wireless charger is realized using the principle of electromagnetic induction. The wireless charger is mainly composed of two parts: transmitter and receiver. The transmitter generates high-frequency electromagnetic waves to transmit energy to the receiver, which in turn charges the battery. This process mainly relies on electromagnetic induction technology to ensure that energy can be effectively converted and utilized during transmission.
The side of wireless chargingThere are 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.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charger refers to a charger that does not use the traditional charging power cord to connect to the terminal device that needs to be charged, and uses the latest wireless charging technology through the use of coilsBetween the magnetic field generated, the magic transfer of electrical energy, inductive coupling technology will become a bridge connecting charging base stations and devices.
Wireless charger is a device that uses the principle of magnetic resonance or electromagnetic induction to provide charging power for electrical equipment. It provides convenient and safe charging services for mobile phones and other devices through wireless charging technology. Its main components include a charger base and an adapter connected to the power supply, and the user can realize wireless charging service when the device that needs to be charged is placed on the charger base.
The principle of wireless charging of mobile phones is as follows: electromagnetic induction charging baseThe electrical energy is converted into a wireless signal and transmitted to the receiving device. Wireless charging technology usually works on the principle of electromagnetic induction or magnetic resonance.
Wireless charging emission Circuit Board (PCBA) is an electronic component used to implement wireless charging function. It is one of the core components of the wireless charging system, responsible for converting electrical energy into wireless energy signals and transmission. PCBA usually consists of multiple components, including power supplies, inductors, circuit control chips, filters, and connectors.
The PCBA board is green and is distributed in a ring shape around the central coil. Remove the PCBA. surfaceA piece of thermal foam is attached to the back of the board. Wireless charging front, wireless charging coil in the middle, no components on the back of the circuit board. The front of the circuit board is a magnetic separator, and the circuit board is inverted. Compare the size of a $1 coin. Wireless charger all components. IDT P9237 wireless charging transmitter controller. Type-C interface sinking plate welding. External memory of IDT scheme.
1, the most used is Ti's chip, about 12. There are many options for launch. We areOne of them.
2, wireless charging PCB, different functions, the required components are different. The required components are: resistor, capacitor, resonant capacitor, resonant coil, MOS tube, control chip, protocol chip.
3, the realization of wireless charging function requires a wireless transmitter module and receiving module, and now the new mobile phones launched by the major mobile phone brands on the market have built-in wireless charging receiving module, some mobile phones without built-in receiving module need an external receiving chip, the use of the receiving chip is also very simple (plug into the mobile phone charging port); The wireless charger needs to be connected to the power supply, howeverYou can charge your phone wirelessly by placing it on a wireless charger.
4, iPhone11 as Apple's flagship iPhone11 also supports wireless charging, but relative to domestic mobile phones, the charging rate may be slower, but other aspects are still very strong, such as iPhone11 has a variety of different colors to choose from, but also the new addition of green and purple, Very little fresh.
Electromagnetic induction is the current mainstream wireless charging method, the principle is to use the magnetic field generated between the coils to generate current for transmission.
The principle of mobile phone wireless charging is that there are two coils on the charging board and the mobile phone respectively, and the line of the charging boardAfter the coil is powered on, an alternating current is applied to the coil below to create a constantly changing magnetic field. When the phone is placed on the charging pad, the coil on the back cover of the phone senses changes in the magnetic field and generates an induced current, which is then converted into direct current, so that the phone battery can be charged.
Confirm whether the mobile phone supports wireless charging: Not all mobile phones support wireless charging, so before using the wireless charger, you need to confirm whether your mobile phone supports wireless charging. Compatibility of wireless charging devices: Different wireless chargers may have compatibility problems, so you need to confirm your ownWhether the line charging device is compatible with the mobile phone. If it is not compatible, you may need to replace it with another brand of wireless charger.
Mobile phone wireless charging principle: in the wireless charging base (transmitter) the alternating current is converted into a magnetic field output, and the device (receiver) then converts the magnetic into alternating current to the device. The resonant type will make the transmitter and the receiver have the same resonance frequency, and when the resonance is generated, the transmission of electrical energy can be completed.
No strong radiation, no effect on the human body! The main principle is: the way of wireless charging is electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmissionWireless charging of mobile phones mostly uses the principle of electromagnetic induction.
2, the advantages of wireless charging safety: no power contact design, can avoid the danger of electric shock. Durable: the power transmission element is not exposed, so it will not be eroded by moisture and oxygen in the air; There is no contact, so there is no loss caused by mechanical wear and flaring during connection and separation.
3, wireless charger compared with the traditional wired charging method, has the following significant characteristics: convenience wireless charger does not need to plug and remove the charging cable, just place the device on the charger to achieve charging, greatly improving the chargeThe convenience of electricity. Whether in the home, office or public places, wireless chargers can provide users with a more convenient charging experience.