2, today we will talk about the advantages and disadvantages of wireless charging treasure and wired charging treasure, as well as their applicable scenarios. Advantages and disadvantages of wireless charging bank: Advantages: Easy to operate: Wireless charging bank is really very convenient because it passes through electromagneticInductive wireless technology, you just need to put the device that supports wireless charging on it, it can automatically charge you, eliminating the tedious plug step.
3, wireless charging good. In wireless charging, the charger and the charged device do not need direct contact, easy to use, strong environmental adaptability, avoiding the physical interface, so there will be no interface wear, sparks, leakage and other problems, in addition, wireless charging can also achieve high voltage, high current, high power charging. The cable is charged. Wireless charging also requires a wired charger, but also more wireless charging board.
4, cable charging. In the case of the same charging timeThe power of the commonly used wired battery charger after charging is 93%, and the power of the wireless charger after charging is 88%. Obviously, there is still a gap in the charging efficiency of wireless chargers, and there is still room for further improvement in technology.
It is based on two core technologies: electromagnetic induction and vibration technology. Now, let's explore the secrets of these two technologies together! Electromagnetic induction technology is the first generation of mobile phone wireless charging, transmitted through the primary coilA certain frequency of alternating current is transmitted, and electromagnetic induction is used to generate current in the secondary coil to achieve wireless energy transmission.
The use of magnetic resonance technology principle, junior high school logistics textbooks have some knowledge, simply put: electricity generated magnetic, magnetic generated electricity! The magnetic field generated by the coil is then converted into electricity by the receiving coil, which is why this wireless charging device often carries a thick base and a "phone case".
Electric vehicle wireless charging technology mainly uses the mutual inductance in the law of electromagnetic induction. It is also similar to a transformer, which inputs from the primary coil and then generates an induction on the secondary coilElectricity. It mainly relies on the energy transmission between electricity and electricity, converts electricity into magnetism, and then induces electricity. Wireless charging is simply to charge electrical equipment through electromagnetic fields or electromagnetic waves without being connected by physical wires.
Wireless charging technology is a new way of charging, it uses a new type of energy transmission technology - wireless power supply technology. This technology allows the charger to get rid of the limitation of the line and achieve complete separation of electrical appliances and power supplies. It shows better advantages than traditional chargers in terms of safety and flexibility. At present, there are four main technical ways to achieve wireless charging:The coil position of the device is covered with a circle of magnets around the coil of the iPhone12, so that each charge does not require the user to slowly align the coil, but just put the iPhone12 on the magnet.
The addition of wireless charging function makes the charging method of iPhone12 more flexible and convenient. Compared with traditional wired charging, wireless charging does not need to connect cables, reducing interface wear and cable management trouble. In addition, with the development of wireless charging technology, today's wireless chargers can achieve faster charging speeds, although compared with wired fast chargingThere is still a certain gap, but it can meet the needs of most users.
Apple straight. Direct charge can be charged fast, but also can play at the same time, wireless charging time is long and slow, and wireless charging can be done at night when the mobile phone is not used. However, the conversion efficiency is best at about 80%, and the remaining electrical energy can only be converted into heat, so the heat of wireless charging has been a big problem. High-power wireless chargers also need to be paired with active cooling fans.
The iPhone12 can be charged wirelessly or via wired. Both have their own advantages and disadvantages, magnetic wireless charging is more convenient,Direct, gently close to magnetic charging; Wired charging is faster and can achieve PD fast charging, but it is relatively not so convenient. The Apple iPhone8 began to support wireless charging, and the iPhone12 was upgraded to MagSafe magnetic charging.
2, Mi 9 Mi 9 mobile phone was released on February 20, 2019, in addition to the Qualcomm 855 chip this product is charged wirelesslyElectricity has made great strides. The Mi 9 mobile phone is equipped with the world's first 20W wireless flash charge, which is comparable to the wired fast charge.
3, Redmi K60 Redmi K60 is a mobile phone product released by Xiaomi on December 27, 2022, and will be sold on December 31, 2022. The Redmi K60 is equipped with a 5,500mah battery that supports 67 watts of wired fast charge and 30 watts of wireless second charge. The iPhone15 is an electronic product released by Apple on September 13, 2023 at Apple's Fall New Product Conference.
4, Apple iPApple's iPhone series is one of the most popular smartphones on the market. In recent years, with the development of technology, the iPhone series has also launched a number of models that support wireless charging. Users only need to place the phone on the wireless charger, they can easily achieve charging, very convenient and practical. Samsung Galaxy Series Samsung Galaxy series phones also support wireless charging.
5. Huawei mobile phones that support wireless charging have wireless charging scenarios : Huawei Mate 40E Pro, HuaweiP50 Pro, Huawei Mate 40E, Huawei Mate 40 Pro, Huawei Mate 30 Pro, Huawei Mate 20 Pro, Huawei P40 Pro, etc.
6, there are many appliances in life, small kitchen appliances can be wireless power supply for small appliances such as rice cookers, as well as electric toothbrushes, razors, adult toys, and sweeping robots, etc. Wireless charging technology, especially suitable for waterproof, no cable shackles there is a need for scenes. With the development of wireless charging technology, Wireless charging scene This kind of wireless charging receiver in our life will be more and more.
In addition to inconvenient charging, there is also a drawback that can not be ignored, that is, the charging efficiency is too slow Wireless charging scene! This is likely due to the heating problem in the electromagnetic conversion process, taking into account the safety of electricity and other factors, manufacturers have to control the power.
Charging power limited, charging technology is notThe current mobile phone power upgrade is very fast, a day to improve a power, from the original 18W fast charge has become a variety of fast charge power, there are 30W, 45W, 65W, and now there are 120W super fast charge power, which also leads to the current world of wireless charging board a lot of very complicated, If you choose the wrong one, you will not experience the full charging power.
Wireless charging from the once popular to today's depression, I think there are mainly the following reasons: First, the charging speed is slow compared with wired charging. Now mobile phones are popular fast charging, 40 or 50 watts, 50 or 60Watt output power, basically more than half an hour can be charged to more than 80%, which is wireless charging can not be compared. Second, portability and versatility are worse than wired charging.
Due to the heating problem in the electromagnetic conversion process, taking into account the safety of electricity and other factors, manufacturers have to control the power. This is also a reason for the gradual disappearance of wireless charging. After all, wired fast charge has developed to 120W, and the fast charge carried by most mobile phones is more than 60W, which has surpassed the wireless fast charge, so wireless charging has gradually opened the gap with wired fast charge because of the technical requirements of the equipment.