Electric vehicle wireless charging technology has become a hot electric vehicle to become the mainstream, the problem of battery life has not stopped, in order to solve the battery life problem, the various car companies have also tried their best to find a way to solve this problem, in addition to the power change and fast charge, in fact, there is a different way, that is, road charging, Let the car run along the road.
The wireless charging process will definitely heat up. As long as the temperature is not very high, no problem, you see if there is something around the block, because many times love to put some things on it. Electromagnetic induction is often used for low-power wireless chargingSuch as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses induction.
Lveco (IVECO) must be no stranger to everyone, as the world's leading commercial vehicle manufacturer, IvECO products cover light, medium and heavy models. The Stellantis Group was formed in 2019 by the merger of the 50 percent holdings of Peugeot Citroen Group (PSA) and Fiat Chrysler Group (FCA). The vehicles that have successfully tested inductive charging are an Iveco electric bus and two Fiat 500s, and this amazing technology is DWPT - Dynamic wireless power transmission.
It is reported that at present, mainstream car companies at home and abroad have laid out automobile wireless charging technology, and the state has also promulgated four national standards such as "Electric vehicle wireless charging system Part 1: General Requirements"; The "New energy Automobile Industry Development Plan (2021-2035)" also points out that it is necessary to strengthen the research and development of new charging technologies such as intelligent and orderly charging, high-power charging, and wireless charging.
Charging has become the daily needs of electric vehicle owners, but about new energy pure electric vehicle chargingElectricity, the owner of what must Get knowledge? At present, the charging methods of electric vehicles are slow charging, fast charging, power change, wireless charging and mobile charging, but the vast majority of electric vehicles on the market only support slow charging and fast charging, and are equipped with slow charging and fast charging interfaces, and other charging methods have not been widely used.
1, electric vehicle wireless charging technology mainly uses the mutual inductance in the law of electromagnetic induction. It is also similar to a transformer, which is fed from the primary coilThen an induced current is generated on the secondary coil. 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.
2, wireless charging system mainly uses 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 the 24V direct current end to supply power to the system directly. Power managedAfter the module output direct current through 2M active crystal inverter converted into high frequency alternating current supply primary winding.
3, the breakthrough of wireless transmission technology is to find a way to "grasp" 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.
4, radio wave type: the principle is to convert environmental electromagnetic waves into current, and transmit current through the circuit. The transmission distance of this wireless charging method is greater than 10Meters, suitable for long-distance low-power charging, and can also achieve automatic charging anytime, anywhere. However, because of the low conversion efficiency, if you use this method, the charging time will be longer. Focused light: This is a new wireless charging technology "AutoCharge" developed by Microsoft.
5, the wireless charging principle of the car is to convert electrical energy into electromagnetic waves, and then sent to the receiver, and then convert electromagnetic waves into electrical energy. Charging technology is not complex, mainly the use of electromagnetic induction and magnetic resonance, but the biggest difficulty of wireless charging is the lack of a unified standard, charging timeWireless charging technology has been
1, if you can transmit power over a longer distance, and can transmit more power, here to talk about another medium range wireless charging technology, electromagnetic resonance technology that can transmit energy over a longer distance. Its advantage is that the transmission distance is much greater than the electromagnetic induction, can carry out more than 10cm electromagnetic induction energy transmission, even in the larger distance of the transmission distance, the transmission power can still reach several kilowatts.
2, not only Japan, there are many countries are studying wireless charging roads, at the end of last year, the world's fourth largest automaker Stellantis announced on the official website that their innovative dynamic induction charging technology has proved successful after years of research and months of testing, and the road "Arena del Futuro" for wireless charging testing of cars is officially opened. So now wireless charging technology is also a very hot ranks.
3, 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 induced current on the secondary coil. It mainly relies on the energy transmission between electricity and electricity, converts electricity into magnetism, and then induces electricity. Wireless charging deviceSimply speaking, it is to charge electrical equipment through electromagnetic fields or electromagnetic waves without being connected by physical wires.
4, for pure trams, the most reliable scheme is electromagnetic induction, which is more stable and reliable. Although magnetic resonance can have a higher power distance advantage (a few centimeters to a few meters), it is difficult to control, technical difficulty is high, and it is not easy to use for electric vehicles (this may be the development direction of wireless charging in the future).
Compared with the traditional charging method, the wireless charging system can indeed greatly improve the convenience of charging, so that it is stopped and charged, and the wireless charging device has lower space demand. In addition, relying on magnetic resonance wireless charging, it can theoretically be charged while walking, and even is expected to solve the range anxiety of pure electric vehicles.
As for the electromagnetic wireless charging scheme, aluminum can also be used to replace copper as raw materials to a certain extent, thereby reducing manufacturing costs.
NearThe Ministry of Industry and Information Technology (MIIT) on Wednesday issued regulations to raise the charging power limit of mobile devices such as mobile phones to 80W and apply wireless charging technology to electric vehicles. This means that the era of wireless charging for electric vehicles may be coming. Wireless charging technology, that is, wireless power transmission technology, is a non-contact mode of power transmission. Mainly through electromagnetic induction, magnetic resonance, radio frequency, microwave, laser and other ways to achieve.
And the location in use will also affect the charging power, so the wireless charging technology is not widely used. For example, wireless charging power for mobile phones is difficult to exceed 20w. And electric cars are very powerful, electricThe pool capacity is also very large. Continental demonstrated inductive charging technology for electric vehicles, which can charge electric vehicles at a rate of up to 11 kilowatts, and at 11 kilowatts, it can provide one kilometer of electricity per minute of charging.
On this road, electric cars and electric trucks will be able to charge as they go, ensuring that the vehicle will not run out of range because the two charging stations are too long apart. Especially in highway driving conditions, the range of electric vehicles may fall faster. But Sweden's ambitions do not end there, with data disclosed that it is expected that by 2030, SwedenAbout 90% of roads and urban roads in the country will be covered with wireless charging facilities.
1, as for the electromagnetic wireless charging scheme, aluminum can also be used to replace copper as raw materials to a certain extent, thereby reducing manufacturing costs.
2, for pure trams, the most reliable scheme is electromagnetic induction, which is more stable and reliable. Magnetic resonance can have higher work than electromagnetic senseRate of remote advantage (a few centimeters to a few meters), but difficult to control, high technical difficulty, it is not easy to support the use of electric vehicles (this may be the future direction of wireless charging). 3, in summary, electromagnetic induction and magnetic field resonance are the most suitable choice for electric vehicles, and the models currently in the development and application of wireless charging are basically using the above two ways.
4, then, if the car can also be charged wirelessly, that is, stop charging, and even charge while running, so that does not solve the major pain point of electric vehicles now? Recently, the Ministry of Industry and Information Technology releasedThe regulations raise the charging power limit of mobile devices such as mobile phones to 80W, and apply wireless charging technology to electric vehicles. This means that the era of wireless charging for electric vehicles may be coming. 5, in recent years, we should be able to find that domestic and American car brands are fully in the field of electric vehicles, and European car brands in the field has not set off what makes people bright waves, but now with the European car manufacturers began to pay attention to the electric car market, they also began to emerge in the field of electric vehicles.
6, especially for you are using mobile phone friendsMay have just picked up the phone from the wireless charging pad. However, for electric vehicles, wireless charging technology has always been in the stage of "only hearing the sound, not seeing the person", although in recent years, many car companies have demonstrated the wireless charging function of the real car, but ultimately failed to carry in the mass production car, let alone popular.
1, wireless charging is not a new, this wireless charging method has long appeared in our daily life, such as mobile phones, smart watches, headphones, electricityMoving toothbrush and so on, all have wireless charging function. The wireless charging mode of these products will indeed allow us to reduce some charging troubles in the process of use. Therefore, if the wireless charging can be installed on the car, the problem of difficult charging will be alleviated to a certain extent.
2, as long as the driver drives the car over the wireless charger, the system will automatically charge the car. A domestic electric vehicle company is also studying wireless charging technology, which has entered the experimental stage and may be mass-produced in the near future. In fact, wireless charging technology is not a tall technology, it is the use of electromagnetic induction principle or magnetic fieldThe resonance principle realizes the wireless transmission of electric energy.
3, electric vehicle wireless charging technology has become a popular electric vehicle to become the mainstream, the problem of battery life has not stopped, in order to solve the battery life problem, the various car companies have also tried their best to find a way to solve this problem, in addition to the power change and fast charge, in fact, there is a different way, that is, road charging, Let the car run along the road.
4, most of today's mobile phones support wireless charging. You just need to put the phone on the wireless charging pad and charge it. Although wireless charging speedIt is slower than wired, but wireless charging is simpler and faster to a certain extent.