At present, most of the pure electric vehicles adopt the charging pile charging method to supplement the battery life. According to statistics, as of February 2019, the number of China public charging piles has reached 348,000. Although the number of charging piles is increasing, it has not been able to solve the problem of slow charging and inconvenient use.
In fact, besides charging by charging piles, the commercialization of wireless charging technology for electric vehicles is no longer a problem on paper. It is reported that Oslo, the capital of Norway, will officially implement the taxi charging service in August 2019, which will become the first case of wireless charging service for electric vehicles in the world.
According to Wall Street reports, Oslo, Norway, is actively promoting a zero-carbon emission policy, requiring the city to operate taxis only using electric vehicles until 2023. For this reason, the Oslo municipal government, in cooperation with Fortum, a Finnish charging technology operator, will install wireless charging facilities on the ground of several taxi greeting stations in the city, which can only be used by taxis. Initially, 20-25 taxis will be revamped. Electric taxi is a wireless charging vehicle. When the taxi stops at the greeting station, it can be charged through the ground wireless charging board. The charging power of the charging board is up to 75 kW.
The wireless charging technology enables the adapter and charging board installed on the electric vehicle to charge separately through induction technology. Based on the characteristics that taxis at taxi greeting stations always queue up in order to wait for passengers to call, the charging board is set on the road where taxis queue up to wait for passengers. When taxis approach the waiting road, they can be charged wirelessly within the waiting time without driving out of the car to operate any charging facilities.
In addition, according to the latest report of research and Markets, the global electric vehicle wireless charging market is estimated to be about 8 million US dollars in 2020. By 2025, the electric vehicle wireless charging market is expected to reach 40.7 billion US dollars, and the annual composite growth rate will reach 117.56% between 2020 and 2025.
According to the report, the growing demand for electric vehicles is driving the overall growth of the radio car charging market. Manufacturers of wireless charging systems for electric vehicles are also increasing their R&D and investment efforts.
Although wireless charging can simplify the steps for users to charge vehicles, there are still corresponding technical difficulties and can not be popularized on a large scale.
For example, the cost of wireless charging equipment is too high, which requires a lot of public and private investment, strict charging environment, high maintenance costs and high energy consumption for long-distance transmission.
It is worth noting that the design problem between the ground wireless charging board and the wireless power receiving components of the chassis of electric vehicles is that the vehicle may encounter the risk of flying rocks or hard objects impacting the chassis in the course of driving, so how to strengthen the wireless charging components of the chassis of the car body is a problem to be solved.
On the other hand, standardization of wireless charging technology is conducive to overall cost reduction and market promotion. For example, WiTricity and Qualcomm have previously competed for similar standardization of magnetic resonance charging technology. With WiTricity purchasing Qualcomm Halo in February, it will be more conducive to standardization of wireless charging than expected, and in the automotive system. Connection between manufacturers and Unified Wireless charging equipment.
In addition to the European continent, the development of electric vehicle market in Asia-Pacific region is also amazing. As the largest market in the region, China has continued to have the embryonic development of wireless charging technology for electric vehicles.
WiTricity recently said that it has signed a new agreement with its subsidiary of Zhejiang Wan’an Technology, a leading automobile manufacturer in mainland China, to share its Intelligent Property (IP). It will assist Zhejiang Wan’an Technology in developing and commercializing high-efficiency radio-electric vehicle charging system based on WiTricity magnetic resonance technology.