The charging package has become the first bottleneck factor restricting the development of electric vehicles. The birth of wireless charging technology has made electric vehicles see the hope of breaking through the bottleneck. Compared with the limitations of wired charging piles, wireless charging mode seems to have become the most marketable technology in recent years.
New energy boosts the development of wireless charging industry
According to statistics, the production and sales volume of new energy vehicles in 2015 reached 340,000 units respectively. Under the strong stimulus of the policy, the new energy automobile industry maintained a high growth trend. From January to July this year, China's new energy vehicle production and sales reached 215,000 and 207,000, respectively, an increase of 119.8% and 122.8% over the same period of the previous year.
Faced with such a large market scale, the demand for charging pile infrastructure in new energy vehicles is growing stronger, and the construction of charging piles has become the basic guarantee for the promotion and application of new energy vehicles. As of June this year, China has built 81,000 public charging piles and more than 25,000 private charging piles. Compared with the previous year, China has made considerable progress, and charging infrastructure construction has also ushered in a new wave.
Zheng Jiejie, deputy director of the National Energy Administration, once told the media that after the release of the national standard for charging piles, it is necessary to comprehensively renovate the existing storage piles. In addition, some new technologies should be strengthened, such as research on wireless charging standards. Analysts pointed out that this means that wireless charging technology is expected to be introduced into wired charging stations. For wireless charging companies, this also means huge market prospects.
And, as technology continues to mature, the efficiency of wireless charging has made tremendous progress. Ouyang Minggao said that the efficiency of wireless charging is gradually increasing and it is close to plug-in charging. The emergence of a new generation of power electronic devices has made wireless charging technology develop by leaps and bounds, and its efficiency is improving. The efficiency of traditional charging methods is over 90%. Very good, now wireless charging efficiency can reach more than 90%.
The charging infrastructure is stimulated by the development of new energy vehicles, and the charging technology continues to mature. The wireless charging technology featuring safety, convenience, manpower and space saving will be popular in the market, and it is expected to occupy the main part in the public charging system. status.
The Internet of Everything is the trend, the next step in wireless charging is dual-network convergence.
The advantages and market prospects of wireless charging technology have also attracted many companies in this field, including many listed companies such as Wanan Technology, ZTE, Shenzhen Sunda, and Shuobe. ZTE has cooperated with Shougang to develop wireless charging applications and jointly create an innovative solution for “wireless charging and energy storage stereo parking vehicles connected to the wind and solar power generationâ€.
Intelligent, lightweight, electric, unmanned and car sharing has become the development direction of the future car. Under the era of universal interconnection, car charging will be fully automated and without manual operation. The charging scene in the future is: after the vehicle is parked in the charging parking space, the connection between the ground system and the vehicle system is automatically established for charging, and the "parking is charging" is realized. In order to support the unmanned and widely distributed electric vehicle charging infrastructure, intelligent network technology will become an indispensable technology.
Ouyang Minggao said that "the development and application of wireless charging technology depends on several conditions. The first is a new generation of power electronic devices, and the second is precise positioning. Vehicles need to be strictly positioned, which is combined with intelligent driving. It is not that people are driving to locate, but to be intelligently integrated with the vehicle. Therefore, the next development direction is two-way, and the car network is integrated."
Car charging is not only developed from wired to wireless, but also from one-way charging to two-way feeding. The power grid can send power to the vehicle, and in the future, the vehicle can also send power back to the grid.
Tian Feng, deputy general manager of ZTE New Energy Automobile Co., envisions that if wireless charging is popularized in the future, barrier-free energy exchange will be realized between new energy vehicles and the power grid. Each vehicle will be automatically charged when it is parked, or even back-feed. That is, in some cases, the vehicle can reverse the power of the battery to the grid.
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