3, wireless charging is through the electromagnetic field. Not the radiation risk of high-power fast charging. Only slow charge. It'll take a few hours. A few hours, save a few seconds to plug the socket time why wireless fast charging car ? And wireless charging to improve efficiency requires precise berths. And wired charging actually requires very low parking accuracy, long wires ah. And there's plenty of room for improvement in wired charging. Like a plug that comes off easily without being crushed.
4, electric vehicle charging needs to be fast, wireless charging power is difficult to meet the standard of wired charging, in addition, the car wireless charging because it belongs to high-power electromagnetic field, safety is also questioned.
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.
Recently, the Ministry of Industry and Information Technology issued regulations to increase the charging power of mobile phones and other mobile devicesThe limit is raised to 80W and wireless charging technology is applied 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, and the battery capacity is very large. Continental demonstrated inductive charging technology for electric carsRange, breaking through the current electric vehicle short endurance technical bottleneck.
However, electric vehicles also have its limitations, that is, with the current technology, can not be realized in the driving to charge the car, there must be a fixed charging time and charging device, then imagine, in the future, electric vehicles can charge while driving? Next, we will discuss several ideas with the topic.
When the car is driving on the road equipped with wireless charging coils, the electric energy can be wireless through the principle of electromagnetic inductionTransfer to the car battery, so as to achieve the effect of charging while driving. However, this scheme faces problems such as high construction costs and difficult maintenance. Solar charging technology Solar charging technology is an environmentally friendly and renewable way to use energy.
Wireless charging transmission Nowadays, small electronic devices such as mobile phones and washing machines can be charged wirelessly. The highway wireless charging system works by burying a series of coils with an electric current under the highway, and then installing induction coils at the rear of the car. When the car passes through this section of road, magnetic resonance is generated, which makes the car constantly charged. But this method is most neededThe problem is cost. After all, this method is expensive and expensive to maintain.
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.
minutes reaches or exceeds 10%, and the charging efficiency is even higher than the direct use of wireless chargers. In contrast, the Deep Blue SL0 Long comfortable Da and Wei brand Blue Mountain DHT-PHEV are obviously not too friendly for Apple iPhone 13 Pro, with a 15-minute charge of 3%, which is a large gap compared with other test models.
"Electric vehicle wireless charging system - Part 2: Communication Protocol between Vehicle charger and charging Device" (GB/T 38772), "Electric vehicle wireless charging System.System Part 3: Special requirements (GB/T 38773), "Electric vehicle wireless charging system Part 4: electromagnetic environmental limits and test methods" (GB/T 38774) a total of 4 national standards.
The maximum charging efficiency of Xiaomi and Huawei requires the mobile phone to support its own protocol, so we separately tested the situation of Huawei Mate 30 with Huawei wireless charging mobile phone bracket and Xiaomi 10 with Xiaomi wireless charging mobile phone bracket. The standard test uses the iPhone 11 pro with all wireless charging phone mounts, and the rule is that the phone stays litScreen status, test the time required to charge 10% (from 40% to 50% of the phone charge) on all products under test.