HUAWEI Huawei 5G accompanying WIFI Pro is equipped with 8000mAh large-capacity battery, 5G high-load state can work for 10 hours, the machine supports 25W reverse wired charge and 15W reverse wireless charge, and is attached with a Huawei 40W super fast charger. The product can send 5G signals to the device through the Balong 5000 chipS can be used as a switch when working in the conduction area or the cut-off area wireless charge integrated drive mos. The additional PWM signal can be used for voltage regulation, motor speed regulation and so on. Several MOS tubes can play the role of a single pilot wireless charge integrated drive mos (similar to a diode single pilot), which has the advantage of small voltage drop, low power consumption, and large conduction current.
2, MOS tube can be used as a switch, amplifier, regulator and other key components in the circuit, its role is to control the currentThe flow of the circuit is thus realized and regulated. The principle of MOS tube is based on the field effect, that is, by controlling the grid electric field strength, changing the concentration of carriers in the semiconductor, so as to adjust the current of the circuit. The structure of MOS tube is composed of metal gate, oxide insulation layer and semiconductor base.
3, MOS tube role: a wide range of uses, including TV high frequency head (high frequency, small current) to switching power supply (high voltage and high current), now the MOS and bipolar (ordinary triode) compound together (IGBT, insulated gate bipolar transistor), widely used in high-power field. In computer collarCMOS refers to the chip that holds a computer's basic boot information (such as date, time, boot Settings, etc.).
4, working principle: MOS tube is applied to the input grid voltage to control the output drain current. The MOS tube is a voltage controlled device, which controls the characteristics of the device through the voltage added to the gate, and does not occur because of the charge storage effect caused by the base current when the transistor does the switch, so in the switching application, the MOS tube should be faster than the transistor.
5, thus forming a conductive channel, so that the current between the source and the drain can flow. MOS tubeIt has the advantages of high input resistance, low power consumption and fast speed, so it is widely used in integrated circuits, such as logic gates, memory, microprocessors and so on. In the digital circuit, MOS tube can be used as a switch to control the on-off of the circuit; In analog circuits, MOS tubes can be used as amplifiers, regulating voltage and current.
6, silica) insulation layer isolation, hence the name. Because the gate is Metal aluminum, it is also called a MOS tube (metal-oxide-Semiconductor). Its gate-to-source resistance is much larger than that of junction FET, also because it is better than junction FETWith good temperature stability and simple integration process, it is widely used in large-scale and ultra-large scale integrated circuits. MOS tube has controllable conductivity and rectification function.
1, for high-power wireless charging roads such as new energy buses and new energy load trucks, whether they use constant current or constant voltage charging, due to high charging voltage and large charging flow, a constant power type can be set at the entrance of the input voltage at the transmitting endNTC thermistor to prevent or weaken the harmful impact of surge current on 4 MOS tubes to increase the life of MOS tubes 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 coil to achieve the process of charging. In the principle of high-power wireless charger, there are several key elements to consider.
3,Wireless charging technology is derived from radio energy transmission technology, 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 often uses resonance. The power supply device transmits energy to the electrical device, which uses the received energy to charge the battery and at the same time for its own operation.
4, wireless charging transmitter input DC Voltage (DC Voltage). The DC Voltage passes through the full power bridge, producing an AC Voltage at SW1 and SW2,It's 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 AC Current in the receiving LC Tank.
5, the way of wireless charging is electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, etc., wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger transmission coil) will generate a magnetic fieldOther unenergized coils (the galvanised coils on the mobile phone) close to the magnetic field will generate current to charge the mobile phone.
Wireless charge integrated drive mos, Apple submitted wireless charge integrated drive mos "Wireless power system" patent to show this innovative concept. Unlike previous battery cases wirelessCharge integrated drive mos, this new design does away with the lightning protection connector in favor of two-way wireless charging technology. As described in the patent, the new battery case will be equipped with two sophisticated "switching circuit" wireless charging coils, which means that it can not only drive the mos I from the wireless charger integration, but also power the connected iPhone or other wireless devices to achieve true wireless interaction.
Recently, there is news that Apple has applied for a patent, future iPhone models can not only allow other devicesUnlimited charging, and there is no need for "back-to-back" charging. In other words, the inductive current can be directly passed through the front display when wireless charging, without the need to reverse the phone on the back. Apple's new unlimited charging method will undoubtedly bring a new storm to the future of wireless charging.
This new patent of Apple undoubtedly indicates the infinite possibilities of wireless charging in the future, looking forward to the near future, we will be able to enjoy the convenience of wireless charging in a more relaxed and intelligent environment.
Apple's new patent reveals new possibilities for wireless charging recently, Apple filed oneA new patent has aroused widespread concern in the industry. Unlike the common NFC technology on the market, Apple's patent seems to aim at the practical application and efficiency improvement of wireless charging technology.