Can new energy vehicles achieve wireless charging？
In 2015, the state issued a document to support the construction of electric vehicle charging. Foreign technology providers also expressed their active participation, and auto companies have been constantly practicing. The charging pile between countries after a few years of popularity is very fast.
In 2021-2022, the penetration rate of new energy vehicles in China has reached nearly 18%, and the explosion of electric vehicles is unstoppable. Countries are rapidly building charging pile stations, countries are also developing wireless charging.
Wireless charging technology is also trying to move out of the lab and onto the market as quickly as possible.
A recent WiTricity survey showed that 96 percent of people are interested in wireless charging for their cars,
while 70 percent said they would be more likely to buy an electric vehicle with wireless charging.
This focuses on user operation of new energy vehicle enterprises, there seems to be the possibility of “Tuyere take-off”.
Similar to wireless charging for smartphones, the battery can be charged by placing the phone on a wireless charging panel without connecting to a charging cable.
Small footprint, easy operation, The damage rate is low, and it can even solve the battery life anxiety of current electric vehicles.
Why is wireless charging still not widespread after all these years?
For pure electric vehicles, the charging mode is different from our existing wireless charging. Compared with electromagnetic induction technology,
magnetic resonance has the advantages of high power and long distance, but it is difficult to control and has high technical difficulty.
It is expected to become a promising charging mode in the future.
Timeliness:
The current mainstream power of On Board Chargers (OBC), as a slow-charging electric vehicle, is about 7KW. The possibility of high-power wireless charging is not high.
Compare wired to wireless. With the current domestic most mainstream charging efficiency, slow charge for 7Kw, fast charge for 15Kw360Kw. Slow charging,
regardless of transmission loss, seems to be about the same, while radio charging, is often more “wasteful” than wired charging;
Fast charger, from the power level, wired fast charger in high power frequency band, “sling wireless”.
In terms of economy:
The difficulty lies in charging the equipment. Unlike rail cars/subways/trams, the paths of cars are divergent and random. Therefore, in terms of the acquisition of charging equipment,
the equipment under the fixed line is easier to be laid out, but for the electric vehicle with unpredictable trajectory,
the acquisition is different, namely static and dynamic.
No matter (the timeliness) or (economy), the static of electric vehicles has been realized in the short term, but it cannot be popularized in large numbers due to (holiness) and dynamic cannot be popularized due to the high cost of wireless charging road. This idea, while good for relieving our mileage anxiety, can only beat us in the face of many difficulties. When can reach (high efficiency) and (economy), wireless charging for pure electric vehicles will also come, and driving anxiety can be dissipated. At present, the mainstream is still based on wired charging piles.