The Ministry of Industry and Information Technology recently solicited opinions from the community, the main content is to standardize the standards for wireless charging of electric vehicles. To facilitate the development of the wireless charging industry in the future. Due to the limitation of charging current, the previous fixed charging pile can not be filled immediately in a short time, and the parking will wait for one or two hours, which has a great impact on the user's experience. Wireless charging nowAs soon as the electricity standard comes out, there will naturally be manufacturers trying wireless charging schemes.
In addition to the above two, the third "running while charging" technical solution is the more familiar "mobile phone wireless charging" route. I believe that through the smart phone with the transparent back cover, or the wireless charger itself, we can clearly understand that the so-called wireless charging of mobile phones is the electromagnetic reaction between two metal coils. So if you want to achieve a similar wireless charging effect for a moving vehicle, you need to bury a high-voltage coil on the road.
However, when we talk about electric cars that do not need to be recharged, we may be discussingAutomatically 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.
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 issued regulations to raise the charging power limit of mobile phones and other mobile devices 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 also faces a cost problem. Although the current SAIC RoeweMainstream car manufacturers such as BAIC New Energy and BYD are developing and testing wireless charging technology for electric vehicles, 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. Wireless charging technology was invented by Nikola Tesla. In 1890, the physicist and electrical engineer NikolaTesla had already done experiments with wireless power transmission. Magnetic induction strengthThe International System of Units is also named after him.
2. Wireless charging technology was invented by genius scientist Nikola Tesla. As early as 1890, physicist and electrical engineer Nikola Tesla experimented with wireless power transmission. The International System of Units for magnetic induction is also named after him. The first patent application for wireless charging technology can be traced back to 1891, proposed by Nikola Tesla. The core of this technology is to power the device directly, not through physical lines, but through electromagnetic induction, or magnetic resonance, between the charger and the deviceEstablish wireless power transmission. Tesla's wireless charging research laid the foundation for later wireless charging technology.
May be the reason of the phone itself. The battery protection temperature set by the mobile phone system is not the same. During the operation of the mobile phone, the system detects the temperature from time to time. Once the temperature exceeds the set value, for example, it begins to reduce the CPU frequency, causing a stall, or prompting a temperature alarm. Charging is the same, for example, when the iPhone wireless charging, the shell temperature is about 30 ° C, the systemStart reducing power.
Even if the 20W mobile phone wireless charging, after charging for a period of time, the charging board, the mobile phone backplane (battery) will also have different levels of hot reaction; Applied to electric vehicles, similarly, the battery of electric vehicles will also be hot because of the heat generated, as mentioned above, the greater the power, the easier it is to heat. So now a "closed loop" is formed.
Of course, the premise of using wireless charging is that your mobile phone must support wireless charging function, if the mobile phone does not have wireless charging function, it can only use USB to charge. Just so you know, we're notA key. Metal materials such as metal bottle caps are placed on the wireless charging panel, otherwise the metal is likely to become very hot.
The logic behind the wireless charging technology applied by the German WIFERION, which was acquired by Tesla, in the modified Model 3 is electromagnetic induction wireless charging. The Tesla Model 3 currently used for modification can achieve up to 12KW wirelessCharging power, the fastest one hour to make up 80 kilometers, full may take about 6 hours.
In fact, wireless charging technology, as early as more than a hundred years ago, proposed by the famous electrical engineer Nikola Tesla. Tesla's idea was feasible, but financial and social conditions did not allow it, so it did not succeed. On June 7, 2007, the journal Science published the results of a research team at the Massachusetts Institute of Technology, who successfully realized wireless charging.
First of all, Tesla's wireless charging technology uses the principle of electromagnetic induction. This techniqueIt can transmit energy through a special electromagnetic field, so that the Tesla car can automatically charge when it is parked. This technology is not only efficient, but can also greatly reduce charging time. Secondly, the wireless charging technology of Tesla cars also has the characteristics of intelligence.
The charging process of Tesla takes about 12 hours, but when using a home charger, the voltage may drop due to the peak load of the transformer, which affects the charging speed. To increase efficiency, it is recommended to install a special wall-mounted charger, which will reduce the charging time to about 9 hours. The optional built-in dual charger can further shorten the charging cycle and charge to fullElectricity takes about 4 hours.
1. The Tesla wireless charging board comes standard with a 65-watt USB-C power adapter with 30 coils that can charge three devices that support the Qi protocol, with a single power of up to 15W. Tesla is an American electric vehicle and energy company that manufactures and sells electric vehicles, solar panels, and energy storage equipment.
2, it is reported that this wireless charging board has 30 coils, can be set for three support Qi protocolAvailable with up to 15W charging power per unit. And comes standard with a 65-watt USB-C power adapter. "Inspired by Cybertruck's angular design and metallic styling, the wireless charging platform delivers 15W of fast-charging power per device, allowing up to three devices to be used simultaneously," the official said.
3, each charging base can provide a maximum wireless transmission power of 5 watts.