1, wireless charger charging speed is slow, there are the following possibilities: 1, wireless charger wireless charging power itself is not large. 2, the wireless charging receiver of the mobile phone, the charging current supported is not large. It is recommended to change a high-power wireless charging board, such as a certain meter, which has more than ten coils, although it is not opened at the same time, the effect will be good.
2, low charging efficiency Since it is for mobile phone charging, charging speed is of course the firstEven if you can do "wireless better than wired" in the application, but the most basic requirements for charging speed can not be reached, then the experience will probably be a discount.
3, low charging efficiency: compared with wired charging, wireless charging efficiency is low. That means it takes longer for users to fully charge. In addition, since wireless charging requires energy conversion between transmit and receive, it may lead to reduced battery life. Slow charging speed: Due to the low efficiency of wireless charging, the charging speed is relatively slow. This causes users to have to wait longer to complete the charge.
4, low efficiency: energy storage and delivery efficiency is less than real contact. Slow charging speed: Due to low efficiency, the charging speed is slow at the same input power. Although wireless charging can be unplugged, the distance between the phone and the charger is very small. However, the electromagnetic energy loss is still not small, and the power received by the general mobile phone is about 75% of the power sent by the charger.
5, wireless charging than wired charging more damage to the battery. In fact, we all know that as long as it is charged, it will cause damage to the battery, but wireless charging and wired charging are compared, wireless charging is more damaging to the battery, because wireless chargingWhat is the function of the chip connected to the receiving end of the electric coil? What is not connected to the output? _ Baidu... '> What is the role of the chip connected to the receiving end of the wireless charging coil? What is not connected to the output? _ Baidu...
AP45851 compatible with high power output, chip compatible with Qi fast charge protocol (5/9/12V application), in line with the latest Wireless Charging Alliance (WPC) Qi version specifications. The AP45851 uses the unique CNS-chip as System technology to fully integrate a variety of high-performance mixed-signal functions, such as low-power device inspection during standbyTest, foreign body detection (FOD) for safe wireless charging.
Wireless charger refers to the use of electromagnetic wave induction principle for charging equipment, the principle is similar to a transformer. There is a coil in the sending end and the receiving end. The sending end coil is connected to the wired power supply to generate an electromagnetic signal, and the receiving end coil senses the electromagnetic signal of the sending end to generate a current to charge the battery.
The wireless charger uses the electromagnetic wave induction principle to charge, similar to the working principle of a transformer. There is a coil in the sending end and the receiving end. The sending end coil is connected to the wired power supply to generate electromagnetic signals, and the receiving end coil is inductive to transmitThe electromagnetic signal of the end generates an electric current to charge the battery. Electromagnetic induction charging This is currently the most widely used scheme, the circuit structure is relatively simple, the cost is low, but the transmission distance is short, affected by the location.
Play the role of metal isolation, prevent energy waste, improve charging efficiency.
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. Convenient: No need to connect with a wire when charging, just put it near the charger, noNeed to occupy multiple power sockets, no multiple wires intertwined trouble.
1, Qi this icon is the pinyin of the Chinese word "Qi" (Qi), meaning "in Asian philosophy represents" qi "- an invisible energy. Metron W5000 wireless charger is supported for wireless Samsung mobile phonesThe charging technology is actually very simple, that is, it contains a wireless charging IC receiving ring.
2, the United States provides a professional solution for Samsung S4 wireless charging, users can choose to equip with the United States original wireless charger MWT0MWT0MWT0MWT0W5000 or any wireless charging in line with the QI standard, will wear the United States RS4 wireless charging case Samsung S4 mobile phone placed on the charging plate can be wireless charging.
According to the picture, U2 should be the overcurrent detection circuit, and R22 should be the current sensor. Changing the size of R22 can change the protection current, but the selection error may burn Q2-Q5.
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 supply, inductor coil, circuit control chip, filter and connector.
Coils: Used to generate or receive electromagnetic fields and are a key part of wireless charging. Protection circuit: prevent overheating, overcurrent, short circuit and other abnormal conditions to protect system safety. Communication module: In some advanced wireless charging systems, it is used to exchange data with the receiving device for more intelligent charge management.
The relevant standards for wireless charging have not yet been introduced, and according to the specification documents of the wireless charging Alliance, the working frequency of wireless charging products is set in the range of 50HZ 60HZ, in theoryThe level of electromagnetic radiation is comparable to that of ordinary small household appliances, and this standard is lower than the electromagnetic field exposure limits for products exposed to the public issued by the International Commission on Non-Ionizing Radiation Protection (ICNIRP), which have been reviewed by expert committees in more than 35 countries.
2, electromagnetic induction: simple and efficient close contact electromagnetic induction, like a pair of tacit understanding of the dancer, the sending end and the receiving end through the induction of magnetic flux transfer power. It is known for its simple structure, high efficiency and low cost, and is especially suitable for close-range device charging. However, it also has limitations, limited transmission distance and strict location requirements, requiring accurate alignment to charge, as shown in Figure 4-1.
3, the principle of wireless charging The principle of wireless charging is to transfer energy to the device that needs to be charged through electromagnetic induction or electromagnetic radiation. Specifically, wireless charging is divided into two ways: electromagnetic induction and electromagnetic radiation. Electromagnetic induction: Through the principle of electromagnetic induction, the current at the transmitting end is converted into a magnetic field, and then the energy is transferred to the receiving end through the magnetic field, and then the energy is converted into current, so as to achieve wireless charging.
4, the core of wireless charging technology is the electromagnetic induction principle. When a coil is fed with alternating current, it creates an alternating magnetic field. If another coil is placed in this magnetic fieldIt also generates electricity. This is the basic principle of energy transmission through magnetic field coupling. Wireless charging devices are divided into two types: receiver and transmitter. The receiving end is responsible for converting the received electromagnetic wave into electrical energy to charge the device.
1. mophie is a long-term partner of Apple, and recently launched a new product of dual wireless charging board, but we don't know whether mophie wireless charging will harm the battery of the phone, noIf the phone itself supports wireless charging of the phone, using mophie wireless charging is no harm, because mophie wireless charger itself has a protection IC chip.
2, yes, as long as the device that supports wireless charging can be used, the difference is that the speed of charging is not the same. It won't hurt the battery.
3, personally think it is not worth buying, first of all, the charging base must put the phone on the top to charge, can not pick up to play, very inconvenient, want to pick up back to a wechat will interrupt charging. Secondly, this charging base charging speed is not fast, 5W workThe rate should also subtract the loss of wireless charging, which is probably about the same as the charging speed of the 5W charger.
4, if the phone supports it, there is no problem. If the phone does not support it, it will not be charged with a wireless charger and will not damage the phone.
5, the quality ranking of charging treasure is: Mophie, ZMI purple rice, Momax Momis, Anker Anker, ROMOSS. Mophie: Mophie is an American brand, which focuses on the manufacturing of mobile intelligent devices, and is also the first certified wireless charging product of AppleThe brand's product line is also relatively rich, there are wireless and wired two categories. And the product concept is relatively novel, consumers who like the sense of technology can look at this brand.