2, wireless charging magnetic field induction area This large circle represents the wireless charging magnetic field induction area in the mobile phone with a protective shell, relying on the built-in magnetic module of the mobile phone is a little powerless, so the built-in magnetic module of the protective shell can compensate for the magnetic force, Apple's official transparent protective shell can be clearSee the white circle, this is the MagSafe magnetic module.
3. iPhone Magnetic buckle. The purple circle on the inside of the phone case is magnetic and can be used to charge. The new Magsafe magnetic wireless charging technology equipped with iPhone12 can be simply understood as adding a circle of magnets on the basis of the original wireless charging technology. Through the attraction of magnets, the mobile phone and the wireless charger are accurately positioned and paired, while effectively avoiding displacement due to vibration, so that the mobile phone is in a more efficient wireless charging state. Supports up to 15W power.
4Wireless charger, if your device supports wireless charging technology, then plug one end of the charger into the power socket only need to put your device screen up on the charger, you can charge the device (please note that the white circle area on the corresponding charger oh, that is the induction area of wireless charging).
5, and the author's Huawei Mate40 charging using South Carolina POWER3 charging bank also has no problem, and on wireless charging speed, it is faster than Apple. In addition, the South Carolina POWER3 charging bank also has a low-voltage wireless charging mode, long press the power button, LCD displayThe screen will appear a circle, at this time, the charging treasure is in low-voltage wireless charging mode, for some wireless headphones, smart watches and so on.
The steps are as follows: First cut the end of the USB data cable connected to the phone with scissors or a knife, and then cut a short section of the long end of the data cable into the incision, you will see four green, red, white and black lines, cut off the green and black two lines, and put the red and green respectivelyThe two shaved off a small section of insulation to expose the copper wire.
Open the back cover of the smartphone, then take out the wireless charging receiver and get it ready; Or the protective layer of double-sided tape peel; The next task is to connect the receiver's metal shock to the smartphone battery, which is the most difficult part of the process. However, as long as you are careful to ensure that each metal shock is connected together, it can be done.
Hands-on transformation steps First, prepare the wireless charging kit, including the battery compartment cover and the required tools. Weld cell cover contacts to test kit. Next, attach the welded thread to the handMachine charging pin, confirm connection. Then, carefully remove the induction coil, install it on the phone, weld the charging pin, and finally test whether the wireless charging function is displayed normally.
Sanfei Consumer Communications, a controlling shareholder, is involved in wireless charging technology and is an associated company with Shensunda, which is also controlled by the controlling shareholder. Qingdao Haier: Haier's "tailless TV" uses wireless power transmission technology in cooperation with the Massachusetts Institute of Technology, which can be used without the use of wiresThis is also the first time that wireless power transmission technology has been successfully applied to TV receiving terminals.
SAN 'an Optoelectronics (60070SH) : SAN 'an Optoelectronics is one of the well-known semiconductor lighting and display solution providers in China, and it also has a more in-depth research in wireless charging technology. The wireless charging chip developed by the company has been applied in a number of intelligent devices, and has a high market competitiveness. Zte (00006SZ) : ZTE is one of China's leading communications solution providers with an active presence in wireless charging technology.
Hengdian East Magnetic (00It conforms to 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 detection during standby and foreign object detection (FOD) for secure 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 powerPool charging.
Play the role of metal isolation, prevent energy waste, improve charging efficiency.
Wireless charging coil you can find Shenzhen Jin Haode, Jin Haode inductance has been in the inductance industry for many years, the old brand, whether it is a product or reputation is very good, reasonable price, good product quality, delivery is fast, the production of coil inductance is sufficient, good quality, stable performance, several manufacturers are looking for wireless chargingThey work together. You can check it out.
Another single chip receiving chip scheme is now more popular, such as XS016 scheme, other SOP-8, etc., because of low cost, can add additional functions, such as increasing temperature control function, strong flexibility, for the transmitter compatibility is also better than SOC.
Wireless charging is related to the receiver. According to the relevant public information, wireless charging is the transmitter (charger) and the receiving end (mobile phone, etc.) each have a coil, the transmitting end converts the electric energy into a magnetic field through the transmitting coil, and the magnetic field of the transmitting coil passes through the receiving terminal lineAccording to the Faraday law of electromagnetic induction of basic physics, an electric field will be generated in the receiving coil, and finally the electrical energy will be output to charge the mobile phone through the receiving end.
Wireless charging is measured by a multimeter at the receiving end and the transmitting end of the coil. Because wireless charging requires a sending end and a receiving end, wireless charging mobile power supply is installed on the basis of conventional mobile power supply with a sending device, and the charging mobile phone supports wireless charging and has a receiving coil for wireless charging. There is a difference between the sending and receiving coils.
According to the principles of physics, the stronger the electromagnetic coil, the stronger the magnetic field emittedThen it is also related to the reception of the mobile phone, and the stronger the magnetic field, the stronger the charging ability will be.
Now there is a company in Shenzhen to do 0.4mm, wireless charging receiver mainly includes coils and magnetic film, as well as other ics. Coil can only use copper wire, if too thin, large internal resistance, serious heating, efficiency is low. If the magnetic film is too thin, it can not effectively isolate the magnetic induction line, which will heat the metal components inside the phone, and affect the charging efficiency.