In design, Huawei wireless charger shows a human side. Rounded appearance, the center LED indicator clearly shows the charging status, green means charging, blue means completed, the details are intimate. ? More importantly, the reputation of the Huawei brand provides a solid quality for this productGuarantee.
Huawei P60 Wireless charging is a new charging method that allows you to charge your Huawei P60 mobile phone without plugging in a cable. This charging method uses a technology called "electromagnetic induction", when you use Huawei P60 wireless charger, just need to put the phone on the charger, electromagnetic induction technology will let the phone automatically start charging.
In terms of interactive experience, Huawei Enjoy 70 introduces an upgraded version of the Enjoy X button, which allows users to perform common functions such as "Record" and "Ride code" by double-clicking or holding down. entityFingerprint identification key with sliding type input technology, improve the input speed and accuracy. The 75-inch AOD large screen, with a screen ratio of up to 90.26%, provides an immersive audio-visual experience, while supporting 10,000 level dimming and eye protection functions to ensure comfortable use.
Huawei released a new product on the evening of April 8 - Huawei 5G CPE Pro 2, which is officially hailed as the fastest, smallest and most comprehensive 5G router in the frequency band.
Huawei mobile phone charger is not able to charge the computer. Because the two of them output different voltages, this could be damagedComputer's. Electromagnetic induction This is the most common wireless charger working mode, it uses the principle of electromagnetic induction, through the primary and secondary coil between the electromagnetic induction to generate current, so as to achieve the energy in the space of the transfer; The implementation of this wireless charger has been promoted by the Wireless Charging Alliance.
Huawei Mate30 supports 40W wired super fast charge and 27W wireless Super fast charge. Huawei's Mate30 series mobile phones are equipped with the EMUI10 system, which adopts a new intelligent interaction, and gives birth to side environmental control, AI space control, AI rotating screen, AI information protection, and moreScreen collaboration and other new interactive operations.
1, Zhirong 25W Super fast charge 15W wireless fast charge mobile power scheme The scheme is based on Zhirong's latest wireless charge design requirements Super fast charge mobile power chip SW6208 and wireless charging chip SW5100 design and development, mobile electricityThe source part continues the excellent performance of SW6208 wireless charging design requirements , a chip to solve the rise and fall voltage control, protocol identification, 5 charging interface control, LED power display and other complex functions, its biggest feature is to support 25W super fast charge.
2, the difference between 15W and 25W is that the power is not the same, the charging speed is not the same, and the 25w fast charging is faster than the 15w fast charging. For example, in the case of mobile phone compatibility, a 15w charger with a 3000 mah battery takes about an hour, 2For a 5w charger, a 3,000mah battery can be fully charged in about 40 minutes.
3, the front design of the charging bank is unique, with a fast charge coil, which is optimized for iPhone 12, and can be firmly adsorbed even with a shell. It supports powerful fast charging functions, including 25W wired and 15W wireless fast charging, compatible with a variety of wireless charging standards, to meet the needs of multiple devices. The capacity is increased to 20000mAh, ensuring a long battery life, and you do not have to worry about power problems for a week.
4, w is super fast charge. Charging treasure 25w represents the output of the charging treasurePower, 25w is generally the normal value that fast charge can achieve. The basic charger outputs 5V/1A equal to 5W of power, and anything faster than that is considered fast or ultra-fast charging. The fast-charging space is still very fragmented, with almost every manufacturer having their own solution, and they don't share technology with each other.
5, W's USB-A interface supports fast charging, and Huawei Mate30 can even display the super fast charging logo, which is almost the original factory experience for Apple 12 users. In addition, aigo A10S also has a trickle mode, suitable for smart devices and old mobile phones, protectionIs there a requirement for the number of layers of b '> Does wireless charging technology have a requirement for the number of layers of pcb
1, for example, for the 6-10 layer of memory module PCB design, the choice of 10/20mil (drill/pad) hole is better, for some high-density small size boards, you can also try to use 8/18Mil hole. Under the current technical conditions, it is difficult to use a smaller size of the hole (when the hole depth exceeds 6 times the diameter of the hole, it is impossible to ensure that the hole wall can be uniformly plated with copper); For the power supply or ground wire hole, you can consider using a larger size to reduce the impedance.
2, control chip: manage the entire wireless charging process, including voltage regulation, power control, communication and other functions. Power amplifier (PA) : Increases signal strength in order to transmit energy efficiently. Oscillators and modulators: Generate high-frequency AC signals for wireless transmission. Coils: Used to generate or receive electromagnetic fields, are a key part of wireless charging.
3, in the range of ravg 0~ 0.08m, the output power increases first and then decreases with the increase of coil turns; In the ravg range of 0.08~ 0.4m, the output power increases with the number of coil turnsFirst decrease, then increase and then decrease again. For a fixed operating frequency, the quality factor Q mainly depends on the shape and size of the coil and the material used. Standard coil technologies (such as wire winding coils and PCB coils) generally specify quality factor values.
4, wireless charging PCB, different functions, the required components are different. The required components are: resistor, capacitor, resonant capacitor, resonant coil, MOS tube, control chip, protocol chip.
1, this circuit diagram with chip sl1052 as control, simple structure, complete functions. ? Pin function 1 Power end. 2 Temperature monitoring input. 3 Charging status indicator. 4 Grounding terminal. 5 Adjust the tube driver. With the base of the external regulating tube. 6 Charging control. 7 Current sampling input. The charging current is determined by the voltage difference between the power supply and this pin.
2, what are the components of wireless charging? The left side is TX, that is, the transmitter, and the corresponding product is the wireless charging transmitter. The right side is Rx, that is, the receiving end, and the corresponding product is with wirelessCharging function of mobile phone, etc. TX end: MCU, power full bridge, and LC resonant Tank composed of inductors and capacitors, where the inductor is the transmitting end coil.
3, there are two kinds of power supply for the radio energy transmission unit: 220V AC and 24V DC (such as automotive power supply), which is selected by relay J. In accordance with the principle of AC priority, the normally closed contact of relay J in the figure is connected to DC (battery BT1). Normally, S3 is connected.
4, but the load, the general design is 2 times the U input. The larger the filter capacitance, the higher the output voltage, and the lower the vice versa. singleIn the phase bridge rectifier circuit, if there is no filter capacitor, the output voltage is 0.9 times of the AC input voltage when the load is open, that is, U output =0.9*U input. Under load, the formula remains the same: U output =0.9*U input. This conclusion is applicable to both bridge and full wave rectifier circuits.
1, for high-power wireless charging roads such as new energy buses and new energy load trucks, whether they use constant current orConstant voltage charging mode, due to the high charging voltage and large charging flow, a constant power type NTC thermistor can be set at the input voltage entrance of the transmitter to prevent or weaken the harmful impact of the surge current on the four MOS tubes, in order to increase the life of the MOS tube and reduce the failure rate during charging.
2, the core of the principle of high-power wireless charger is energy transmission through the principle of electromagnetic induction. Specifically, the wireless charging system consists of two parts, namely the charger and the receiver. The charger converts electrical energy into a high-frequency electromagnetic field, while the receiver converts the electromagnetic field into electrical energy through an induction coilTo realize the process of charging. In the principle of high-power wireless charger, there are several key elements to consider.
3, wireless charging transmitter input DC Voltage (DC Voltage). The DC Voltage passes through the power bridge, producing an AC Voltage at SW1 and SW2, which is actually a square wave. Square wave loading generates an AC Current at both ends of the LC Tank. An alternating current passes through the coil to generate a magnetic field. The receiving coil senses this magnetic field and generates an alternating current in the receiving LC Tank (AC Current).
4, wireless charging technology from radio energy transmission technology, can be divided into low-power wireless charging and high-power wireless charging two ways, its principle is through near-field induction, by the wireless charging device will be transferred to the charging terminal device, the terminal device will receive the energy into electricity stored in the battery of the device. Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones.
5, wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, wireless charging of mobile phones is mostly adoptedIt uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charging the mobile phone.
6, low-power wireless charging Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses induction. High-power wireless charging High-power wireless charging is often resonant (most electric vehicles are charged in this way) by the power supply device (chargerThe energy is transmitted to an electrical device, which uses the received energy to charge the battery and at the same time for its own operation.