1, no harm to mobile phones. The wireless charger uses the latest wireless charging radiation / wireless charging technology wireless charging radiation /, which transmits electrical energy by using the alternating magnetic field generated between the coils wireless charging radiation /. Inductive coupling technology will become a bridge connecting charging base stations and devices.
2, for the human body: wireless charging technology is harmless to the human body. Wireless chargingThe resonance principle used is magnetic field resonance, which is only transmitted between coils resonating at the same frequency, and its wireless charging radiation / his device cannot accept the band, in addition, the magnetic field used by wireless charging technology is itself harmless to the human body.
3, there is radiation is certain, otherwise the energy can not be transmitted across the space. The radio waves used for charging must be larger than the radiation power of the phone itself, otherwise the charging efficiency is too low. Calculated with a 1000mAh capacity lithium battery, 50% of the charging capacity is about 7~8Wh.
4, the harm is relatively small can be ignored, wirelessStandards for electromagnetic radiation have not yet been issued. According to the Regulations on Electromagnetic Radiation Protection, the average specific absorption rate (SAR) of the whole body of ordinary users should be less than 0.02W/kg for any consecutive 6 minutes within 1 day and 24 hours. 3, the Ministry of Telecommunications Research Institute Tel laboratory director He Guili said that wireless chargers have radiation is inevitable, but since it has been listed, it means that it must meet international standards, will not cause harm to the human body. "As long as the wireless charger is done according to the technical specifications, it will not have a radiation hazard to the human body." He Guili said. This shows that the Internet rumors are not true.
4, all mobile phone radiation parameters listed in Samsung Mainland comply with the relevant national regulations, please rest assured to use.
5, radiation must have, the working principle determines. But generally will not bring harm to people, induction cooker one or two kilowatts, did not see who wear protective clothing to cook on not wireless radiation /? Wireless charger less than 10 watts, not that powerful. It's just that in general, you don't sleep with a cuddle.
6, in order to effectively reduce the adverse effects of electromagnetic radiation on health. For mobile phones: under normal circumstances will not harm the mobile phone, wirelessThe working frequency of 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.
Low efficiency: energy storage and transmission efficiency is less than real contact. Slow charging speed: Due to low efficiency, the charging speed is slow at the same input power. High cost: There needs to be a push in the chargerThe electronic circuit of the wireless coil, and the electronic device that needs to have power change in the electrical device, both also need to have a wireless coil, so the cost is higher than that of direct contact.
Mobile phone wireless charging has the advantages of convenience, flexibility, and protection interface, and the disadvantages are low charging efficiency, slow charging speed, and high cost. Benefits Convenience: Wireless charging of mobile phones eliminates the hassle of using a charging cable. Users only need to place the phone on the charging dock, without plugging or unplugging the charging cable, to start charging. This makes the charging process easier and faster. Flexibility: Wireless charging eliminates the need for a specific charging cable.
WirelessThe advantages of charging are: reducing loss, high adaptation rate, the disadvantages are: the distance is too small, only the transition technology; The benefits of wireless charging reduce the loss. As we all know, when using wireless charging, you only need to connect the wireless charging board to the power supply first, and then place the device that supports wireless charging on the wireless charging board.
Radiation is certain, otherwise the energy cannot be transmitted through space. It takes more radio waves to charge than a cell phoneThe radiation power of itself is large, otherwise the charging efficiency is too low. Calculated with a 1000mAh capacity lithium battery, 50% of the charging capacity is about 7~8Wh.
It can be seen that the Internet rumors are not true. Nowadays, people are more and more concerned about their health, so the radiation problem of electronic devices is also more and more concerned. Wireless charging technology is implemented using the principle of electromagnetic induction, although it will also produce radiation, but it will not cause harm to the human body.
Reporter conducted a test, the results show that the wireless charger does exist radiation, the value is small but not without. Tests show wireless chargerThe radiation value is smaller than that of mobile phones, such as Sharp SH8010C and Samsung i579, but when used with other electronic devices such as computers, WiFi, the cumulative effect cannot be ignored. In extreme cases, values above 2,500 can have a significant impact on health.
1, although the equipment has high technical content, the economic cost of the equipment is higher, 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. With wireless charging device distance and powerThe greater the dissipation of useless work will be.
2, under normal circumstances will not harm the mobile phone, wireless charging now the working frequency is done below 1M, so the signal of the mobile phone will not have an impact. 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.
3, the harm is relatively small can be ignored, wireless charging technology has appeared in the 19th century, but the popularity of mobile phone applications is not high. It uses magnetic resonance.The principle is to let the wireless charger spread the charge to the phone battery through the air. Many wireless chargers on the market do not indicate radiation values, and electromagnetic radiation standards for wireless chargers have not yet been introduced.
First of all, not all wireless chargers on the market can be competent for watch charging. Many products do not clearly label the radiation value, which is somewhat worrisome. Since the radiation standards of wireless charging technology are not yet perfect, we need to pay attention to the current regulationsRequirements, such as the "Electromagnetic Radiation Protection Regulations" stipulate that the electromagnetic radiation of the user in continuous contact with the wireless charger within 24 hours shall not exceed the specific absorption rate (SAR) limit of 0.02W/kg.
Taking 1000mAh capacity lithium battery as an example, the radiation of wireless charger is calculated. 50% charging capacity is about 7~8Wh. If it is required to be full for about two hours, the maximum charging power should reach at least 1W (the maximum power of the GSM900 mobile phone is about 2W); Since the wireless charging method of the phone is to place the phone above the charger rather than inside, the radiation leakage rate can be not small.
Many wireless chargers on the market do not indicate the radiation value, and the electromagnetic radiation standard for wireless chargers has not yet been introduced. According to the "Electromagnetic radiation protection Regulations", ordinary users in 1 day and 24 hours, any continuous 6 minutes of body averageSpecific absorption rate (SAR) should be less than 0.02W/kg.
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.