Wireless charging, even remote sensing charging. Its principle is electromagnetic induction, which is usually used in small power situations and does not require electrode connectionThe contact. There are induction coils in the small column and electricity, there are induction coils in the electric toothbrush insertion part, and there are plastic insulation outside, there is no electrical contact, and the induction obtains electricity to charge the battery and drive the small motor.
Wireless charging principle - electromagnetic induction wireless charging Electromagnetic induction wireless charging is the most used wireless charging solution, high school physics textbooks have mentioned through the primary coil of a certain frequency of alternating current, using electromagnetic induction in the secondary coil to produce a certain current, thereby transferring energy from the transmission end to the receiving end.
The basic principle of wireless charging, that is, the currentIt is converted 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.
Now there are many electric toothbrushes using wireless charging technology, the principle of this technology is actually the law of electromagnetic induction, that is, a magnetic field is set around the current, and an electric field is generated by changing the magnetic field to achieve the effect of chargingThe principle of induction cooker is more similar.
Not only can eliminate messy transmission lines between devices, but also safer for electronic devices such as electric toothbrushes that are often in contact with conductive media such as liquids. Electromagnetic induction wireless charging is the most widely used wireless charging scheme. High school physics textbooks mention that a certain frequency of alternating current passes through the primary coil, and then electromagnetic induction generates a certain current in the secondary coil, thereby transferring energy from the transmitting end to the receiving end.
First of all, the Qi protocol is basically all electric toothbrush manufacturers, as well as wireless charger manufacturers, will be compatible and supported. The downside of the Qi protocol is chargingNot much power, up to 10W. The advantage of the manufacturer's own protocol is that it can achieve very high wireless charging power. But if you are a Xiaomi electric toothbrush, you must buy a Xiaomi wireless charger. There is no third-party manufacturer to produce it.
Wireless charging full power will change. According to the relevant public information, wireless charging uses a similar method to wired power supply. Power the device at full speed and then reduce the power at the end of the charging cycle. Wireless charging is full of powerThe rate will be reduced to protect the battery.
Whether it is wired or wireless charging, the charger (board) heat is naturally one thing, but in the case of wired charging, the phone and the charger will not be in direct contact, so generally not because the charger heat can not affect the temperature of the phone body; In turn, wireless charging can be different, in the long run, especially with poor quality charging board, it is hard to say whether it will have an impact on the inside of your love machine.
In short, wireless charging is a convenient way to charge, if used properly, it will not have a negative impact on the phone.
ThisElectromagnetic waves are generally in the frequency range of tens to hundreds of MHz, although it may not cause much harm to the human body, but the harm is still much greater than that of wired charging. 5, the price is more expensive mobile phone wireless charging and wired charging, charging head and mobile phone need to increase the charging coil, and related protection circuit. At the same time, high frequency wave circuits are also required to meet electromagnetic compatibility, so the overall price is higher than traditional wired charging.
The efficiency of wireless charging is lower than that of wired charging, but in the future, with the rapid progress of wireless charging technology, it is likely to be better than wired charging in charging efficiency. butAt present, the technology of wireless charging is not advanced enough, so the charging efficiency of wireless charging technology is lower than that of wired charging. At this stage, wireless charging is more as a supplement and auxiliary to wired charging.
No, wireless charging does not degrade the battery's performance any faster. Battery manufacturers design the amount of energy stored in batteries to determine the amount of electricity we can use. The manufacturer sets a fixed upper cut-off voltage and a lower cut-off voltage, and electrically cycles between the two voltage ranges, so long as we choose the right voltage range, we can cycle the battery thousands of times.
Wireless charging, using the principle of electromagnetic induction, the working frequency is very low, and the risk is small. If you're still worried, you can choose and defend your plan.
w. At present, domestic mobile phones already support 50W wireless charging, 50W is also the upper limit of the provisional wireless charging standard, but even so, the frequency of use of wireless chargers is still not as good as the traditional charger, Samsung launched 15W wireless charger at this time, really letOne has no idea.
To effectively reduce the adverse effects of electromagnetic radiation on health. For mobile phones: under normal circumstances, it will not harm the mobile phone, and the working frequency of wireless charging is now below 1M, so it will not affect the signal of the mobile phone. Wireless charging has no effect on mobile phone battery life, and wired charging is basically the same, but the rate is lower, but the wireless charger conversion rate is still high, more energy saving.