1, it is revealed that Huawei filed a patent application this month for a variety of advanced systems inside the smart car, from the optimization of key access control to vehicle positioning wireless charging equipment, all show its pursuit of the smart car ecosystem precision design. These moves are clearly in line with Huawei's strategy to accelerate its entry into the automotive industry, especially targeting the 5G-powered smart car market.
2, according to some information, it can be found that this patent is mainly for the on-board charging of electric vehicles to prepare some equipment, including the input of electricity and the size of the power, as well as the converterThere will also be electrical measuring coils and battery measuring coils designed inside the transformer, as well as battery connectors or multiple switches, which can convert the line when closed.
3, this patent is only used for charging electric vehicles, the purpose is to help you reduce costs. When charging, take a look at the specific configuration, and increase the power of charging. If the input is not correct, there is bound to be a problem on the switch. To solve the problem of charging piles is to provide welfare to everyone, so that we do not have to worry about what to do if there is no electricity on the way. As long as the vehicle can be transmitted in time, it can be poweredPut it in quickly.
4, Method 1: With the help of vehicle inverter! First, you need to buy an on-board inverter that converts the vehicle's 12V power supply to 220V AC. After inserting the inverter into the cigarette lighter holder, connect the phone's charger to the inverter or cigarette lighter. But remember to avoid charging in the car before the engine starts. Method 2: Use wireless charger directly! Another way is to use the wireless charger that comes with the vehicle.
5, and now, Huawei published this patent, saying that the car can be charged wirelessly, this technologyAlternating current, thus generating alternating magnetic fields according to Faraday's law.
The breakthrough of the technology is to find a way to "catch" electromagnetic waves, that is, to use the "resonance" principle of physics - two objects with the same vibration frequency can efficiently transmit energy. The system consists of the main circuit located outside the car and the secondary circuit, rectifier and drive system located inside the car.
The principle of wireless car charger is to use Ampere's law and Faraday's law to generate electromotive force in the properly positioned power receiver through the time-varying magnetic field generated by the power transmitter, thus giving the handThe machine is charged. The mainstream wireless car charging has two ways of front loading and rear loading. Let's take a look at the principle of wireless car charging.
The basic principle of wireless charging: electromagnetic induction: a certain frequency of alternating current in the primary coil generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmission end to the receiving end.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charging usually adopts electromagnetic induction, energy coupling through the coil to achieve energy transfer. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses 24V DCThe electrical end directly supplies power to the system. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
Wireless charging of new energy electric vehicles is distinguished from the basic principle, mainly electromagnetic induction and magnetic resonance. The research of electromagnetic induction focuses on inductive charging, wireless charging, electromagnetic induction and charging station. The research of magnetic resonance focuses on wireless power supply, resonance frequency and induction systemData, antenna and transmitter fields. Zte, BMW, Mercedes-Benz, etc., adopt the principle of electromagnetic induction technology, Qualcomm Halo, Witricity adopt the principle of magnetic resonance technology.
Wireless charging can be divided into low-power wireless charging and high-power wireless charging two ways, low-power wireless charging often uses electromagnetic induction, such as mobile phone charging. High-power wireless charging often uses magnetic resonance, and the power supply device (charger) transmits energy to the power device, which uses the received energy to charge the battery and at the same time for its own operation.
Currently wireless charging sideThe type mainly includes three types: electromagnetic induction type, magnetic field resonance type and radio wave type.
There are five kinds of new energy pure electric charging methods, one is constant voltage constant current charging, the second is fast charging, the third is wireless charging, the fourth is replacement charging technology, and the fifth is mobile charging. Pure electric vehicle charging mode Constant voltage constant current charging mode Constant voltage constant current charging mode is very limited, only about 15 A. This charging method is relatively simple and easy to operate, and is generally used for electric vehicle home charging equipment and small charging stations, and the charging process can be completed by itself.
Commonly used new energy vehicle charging methods areFour, respectively, slow charge, fast charge, wireless charging and mobile charging. Slow charge: Slow charge is more suitable for home charging pile, this current power is very small, charging time is longer, it takes about 6 to 8 hours to be full. Fast charge: This way of charging is faster, the current is larger, and the electricity can be full in a short time, generally there are such charging piles in the charging station.
Wireless charging also faces a cost problem. Although the current SAIC Roewe, BAIC New Energy, BYD and other mainstream car manufacturers are developing and testing electric vehicle wireless charging technology, but the cost of this technology is still high. Although there are currently no domestic production models that support wireless charging, this is expected to change soon.
1, do not rely on the charging cable to charge the electric vehicle, through electromagnetic induction, magnetic resonance, radio frequency and other ways to achieve non-contact power transmission. There is no exposed connector for wireless charging of electric vehicles, which can adapt to a variety of harsh environments and weather, and avoid safety hazards such as leakage and electricity running. Easy to use, the vehicle only needs to park to a fixed position to charge,And there is no need for regulation. The power supply and transformer are hidden underground to save space.
2, electrical energy through electromagnetic response, electromagnetic resonance, frequency emission and other non-contact transmission. In this case, charging is done without a leak connector. It avoids safety hazards such as leakage and running during charging, is very convenient to use, and can also avoid dirty circuits. Wireless charging of motor vehicles is a feature only available in some mid-to-high-end models. After use, it is convenient for the driver to charge some parts of the motor vehicle.
3, car wireless charging technology! -- is a kind of electromagnetismNon-contact methods such as response, electromagnetic resonance and frequency emission enable innovative technologies for vehicle charging. Compared with the safety hazards such as leakage and running electricity that may exist in traditional charging methods, wireless charging undoubtedly provides higher safety and convenience. At present, this technology is mainly used in some high-end models.
4, automobile wireless charging technology is a non-contact way to transmit electric energy through electromagnetic induction, magnetic resonance, frequency and other charging methods, do not need to use exposed connectors, so as to avoid leakage, running and other safety hazards, making charging more convenient. At present, this technology is only available in some medium and high level vehiclesThe type has been applied.
5, automobile wireless charging technology is an electric vehicle charging method that does not rely on charging cables, through electromagnetic induction, magnetic resonance, radio frequency and other ways to achieve non-contact power transmission, to avoid leakage, electricity and other safety hazards. Compared with traditional wired charging, it has the advantages of convenient use and no supervision, but the power is smaller and the transmission efficiency is slightly lower. Electric vehicle wireless charging mainly has two ways: electromagnetic induction and magnetic resonance.