The principle of electric field coupled wireless charging is to transmit electrical energy through the induced electric field generated by the coupling of two sets of asymmetric dipoles in the vertical direction. Suitable for short distance charging, high conversion efficiency, the position can not be fixed; But the disadvantage is that the equipment needs to be large, low power. Therefore, at present, among the four wireless charging methods, electromagnetic induction wireless charging scheme is the most mature and most widely used in business.
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.
Wireless charging technology is a special supplyElectrical mode, it does not need the power line, relying on the propagation of electromagnetic waves, the electromagnetic wave energy into electricity, and finally achieve wireless charging. Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones, and ZTE's electric vehicle wireless charging uses induction mode.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become the connection of the charging base station andh2>
Wireless charging vertical exceed Your 13 May not be wireless charging because your device does not support wireless charging technology, or you are not using a compatible wireless charger. Device compatibility Wireless charging vertical exceed : First of all, we need to be clear that not all devices support wireless charging. If your device is an older model or doesn't already support wireless charging technology, it won't be able to charge wirelessly.
My 13 does not have wireless charging reasons such asBelow Wireless charging vertical exceed : Wireless charging function is not enabled: You need to check whether the wireless charging function is turned on in the phone's Settings. The specific steps are as follows: Open the phone Settings, select the "Battery" menu, and then select "Wireless charging" to ensure that the wireless charging function is enabled. Wireless charger issues: Make sure you are using a charger that supports wireless charging and that there are no obstacles between the charger and the phone.
Reasons for no wireless charging include: wireless charging function is not enabled, wireless charger problems, charging area mismatch, mobile phone and chargeThere are obstacles between electrical appliances. You need to check that wireless charging is turned on in your phone's Settings. Make sure you are using a charger that supports wireless charging and that there are no obstacles between the charger and the phone. Please ensure that the phone is placed in an area suitable for wireless charging.
Wireless charging accessories damaged, foreign body blocking, etc. Wireless charging accessories damaged: The use of an external wireless charger or accessories, damage or failure. Check that the charger and related devices are working properly to ensure that they are compatible with the Apple 13. Foreign object blocking: In the wireless charging area applicable to the Apple 13, any placed inForeign objects between the phone and the base and blocking the transmission signal will affect the normal wireless charging.
And there is no need to use a charging cable. The charging speed of this charger is relatively slow, but it is very convenient and can be charged anytime and anywhere. Although the Apple 13 cannot use wireless charging, it uses a new magnetic charging method, which is very convenient and can be charged anytime and anywhere. At the same time, the fuselage design of the Apple 13 is also more beautiful and more ergonomic, so that users are more comfortable.
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 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.
Wireless charging principle is mainly electromagnetic induction and wireless electromagnetic wave technology. The principle of electromagnetic induction is the basis of wireless charging. When a charger is produced between a mobile deviceWhen a magnetic field is generated, electromagnetic induction is generated. The alternating current generated at the charger end will create eddy currents in the magnetic field, and the receiving coil at the mobile device end will sense this eddy currents. In this way, power is transferred from the charger to the mobile device.
Using the principle of electromagnetic induction charging equipment, its principle is similar to the transformer, through the transmitter and receiver end set coil, transmitter coil under the action of power to send electromagnetic signals, the receiving end coil receives electromagnetic signals and convert electromagnetic signals into current, so as to achieve the purpose of wireless charging.
Electromagnetic induction wireless charging: This kind of chargingThe way 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.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
The principle of wireless charging mobile phone is: electromagnetic induction principle, electromagneticInductive wireless 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 generate current near the magnetic field to charge the mobile phone.
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 electricity and stores it in the battery of the deviceMedium. The principle of energy conduction is inductive coupling, which ensures that there is no exposed conductive interface. It can not only eliminate messy transmission lines between devices, but also be safer for electronic devices such as electric toothbrushes that are often in contact with conductive media such as liquids.
2. In addition, with the development of wireless charging technology, some wireless charging bases similar to charging bowls have begun to appear. The AirPower on the PPT of Apple's autumn conference this year is a similar device, which can charge multiple devices such as iPhone, Apple Watch and Air Pods at the same time, making it more convenient. thisIn addition, if wireless charging technology can be vigorously popularized, the charging experience of public places will be greatly improved in the future.
3, 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.
4, wireless charging technology has not been widely popular reasons: the number of terminals is less two years ago, Nokia Lumia 920 built-in Qi wireless charging technologyAnd randomly equipped with a wireless charging board, but no other manufacturers followed up. Although some third-party manufacturers have also launched wireless charging accessories, but need to install a special shell, it is not compatible with other digital devices, the use of inconvenient form.
From a technical point of view, wireless charging is harmless for human safety. Wireless charging uses the principle of resonance, that is, magnetic field resonance, which transfers energy only between coils with the same frequency, and other devices cannot receive itSafety of electromagnetic radiation! --. In addition, the magnetic field used for wireless charging itself has no negative effects on the human body. However, the economic costs and maintenance costs of wireless charging devices cannot be ignored.
Disadvantages of mobile phone wireless charging Although the technical content of the equipment is high, the economic cost of the equipment is high and the maintenance cost is large. Because of the realization of long-distance high-power wireless magnetoelectric conversion, the energy consumption of the equipment is high. As the distance and power of wireless charging devices increase, the loss of idle work will be greater.
has little effect on human body; Wireless charging uses the principle of electromagnetic induction and its operating frequencyThe rate is very low, and the harm is not great. If you are still worried, you can choose a shielded scheme.
does no harm to mobile phones. Wireless charger uses the latest wireless charging technology, by using the alternating magnetic field generated between the coils, the transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
For the human body: wireless charging technology is safe and harmless to the human body. The resonance principle used by wireless charging is magnetic field resonance, which is transmitted only between coils resonating at the same frequency, and other devices cannot accept the band, in addition, the magnetic field used by wireless charging technology is itself harmful to peopleIt's harmless.
Electric field coupling wireless charging Wireless charging vertical exceed , no coil for electromagnetic induction Wireless charging vertical exceed , But directly through the charging base and the electrical appliances to be charged between the formation of wireless vertical exceed capacitor wireless vertical exceed The high-frequency electric field, that is, the induction electric field generated by coupling two sets of asymmetric dipoles in a vertical direction to transmit power, this charging method has the advantages of low cost and low alignment requirements. But there are not many actual products.
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 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 Wireless charging vertical exceed ; And increasing the number of coils requires more coils and associated circuits to be installed in the device, which increases design complexity and cost.