1, the principle of wireless charging is that through near-field induction, the wireless charging device conducts energy to the charging terminal device, and the terminal device converts the received energy into electrical energy and stores it in the battery of the device. The principle of energy conduction is inductive coupling, which ensures that there is no exposed conductive interface. It can not only eliminate the messy transmission line between the equipment, but also for electric toothbrushes and other frequent contact with liquidsElectronic devices with such conductive media are also safer.
2, the popularity and application of wireless charging technology Wireless charging with its convenient and environmental characteristics has gradually become a new trend of mobile phone charging. Through the principle of electromagnetic induction, such as the Qi standard and the PMA standard, the phone can automatically receive energy without physical contact with the charging line.
3. In addition, with the development of wireless charging technology, some wireless charging bases similar to charging bowls begin to appear. This year's Apple autumn conference PPT AirPower is a similar device, it can simultaneously give iPhone, ApThe convenience of charging multiple devices such as ple Watch and Air Pods has skyrocketed. In addition, if wireless charging technology can be popularized, the charging experience in public places will be greatly improved in the future.
1, the reasons for too fast battery loss are more due to improper use, such as excessive use of mobile phones, the use of unstable chargers, wrong charging habits, and inPower consumption operation during charging. Wireless fast charge does a better job of controlling temperature and power conversion, and the impact on the battery can be controlled as long as the quality of the device is reliable. Wireless fast charge is especially suitable for those who pursue convenience, such as busy office workers.
2, although some people worry that wireless fast charging will damage battery life, but in fact, wireless fast charging itself will not. Battery life is affected by a variety of factors, such as faulty charging habits (excessive discharge and frequent charging), high temperatures, and non-compliant charging devices. Lithium batteries have no memory effect, and appropriate "use with charge" is beneficial to battery health.
3, however, wireless fast charging does not directly lead to reduced battery life. Battery life is affected by a variety of factors, lithium batteries have no memory effect, frequent charging, power off does not affect. What can really damage a battery are wrong charging habits, high temperatures, and substandard charging equipment. For example, the 40W wireless flash charging technology used by OPPO Ace2 takes into account charging efficiency and safety through series dual cell and air-cooled heat dissipation technology. 4, in theory, wireless fast charge and mobile phone fast charge, are designed for mobile phones, mobile phone battery is not any harm, for this point orNeed to know. However, when the user chooses a wireless charger, it is best to choose a charger that is compatible with the mobile phone, or choose a charger produced by a regular manufacturer.
5, long-term use of radio charging will not affect the mobile phone. Wireless charging is characterized by no charging line restrictions, affected by the nickel-metal hydride battery, this battery has memory, the best way to use is to reach the best state of the battery after charging. The wireless charging method does not have the bondage of the line, and takes it with each charge, reducing the complexity of plugging and unplugging the data cable.
1, the composition of wireless charging: Usually, a wireless charger contains a transmitter coil, a receiving coil, a control circuit and a power supply. The transmitting coil and the receiving coil are the core components of wireless charging, and they achieve energy transmission through electromagnetic induction. The control circuit is used to adjust the transmitted and received power to achieve stable and efficient energy conversion. The power supply provides energy for the entire system. Power transmission path: Wireless charging achieves energy transmission through electromagnetic induction.
2. The MCU controls three signalsTo control the transmitted energy: Input voltage power switching frequency of the full bridge power input duty cycle of the full bridge Note: Why can you control the transmitted energy by controlling these three signals? The Vooda School will explain it later. The communication mechanism of wireless charging is what conveys the essence of information is to make the signal change. Like when I wave to you and you see my hand changing, you know I'm calling you.
3, the audio noise problem of wireless charging often troubles users, especially in a quiet environment, such as the use of the bedside, the abrupt "sudden-sudden-sudden-sudden" sound may disturb sleep. This is the main source of noiseCharge your phone.
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.
Wireless charging mainly uses electromagnetic induction, magnetic field resonance, radio waves, electric field coupling and other principles. Wireless charging Because the magnetic field transmits energy between the charger and the electrical device, the two are not connected by wires, so the charger and electricity are usedDevices can be made without exposing conductive contacts.
Wireless charging is based on the principle of electromagnetic induction, similar to transformer operation, through the transmitter and receiver coil design! --. The transmitting coil releases electromagnetic signals under electric drive, and the receiving coil captures these signals and converts them into current to achieve contactless power transmission. Electromagnetic waves, composed of electric and magnetic fields, can travel through space and are the key to wireless charging energy transfer.
Wireless charging uses electromagnetic waves to transmit energy, which is composed of the interaction of electric and magnetic fields, and can travel freely in the air. This techniqueThe technology enables energy to be transmitted directly from the transmitting end to the device that needs to be charged across the physical contact, providing the possibility of wireless charging of electronic devices.
Principle of wireless charging Wireless charging refers to the use of radio waves to transmit energy, so as to achieve the charging of electronic devices. It is a new charging technology that can transmit electrical energy from the transmitting end to the receiving end, so as to realize the charging of electronic devices.