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2021-11-17
Nowadays, electric vehicles have become the choice of more and more consumers. Taking Beijing as an example, applying for new energy personal indicators may be scheduled to 2023. At the same time, we should also note that as a new thing, electric vehicles also have many problems. Among them, the difficulty of charging is the most obvious shortcoming.
Data shows that as of the end of 2017, China's new energy vehicle pile ratio is only 3.5:1, the layout of charging facilities is still not reasonable enough, and the utilization rate of public charging piles is only 12%. From a technical point of view, the current shortcomings of charging are mainly concentrated in three aspects: first, the charging time is longer, which weakens the use efficiency of electric vehicles; second, the service capacity of charging facilities is insufficient, which is mainly reflected in the difficulty of finding charging piles. , Poor compatibility, etc.; thirdly, the level of intelligence is low, which is not convenient for large-scale deployment and management. It can be said that charging piles are the main reason that restricts the large-scale outbreak of electric vehicles. Therefore, how to increase the layout of charging piles has become a top priority for the entire industry.
The key to breaking the game: high-power technology Judging from foreign experience, the foreign electric vehicle industry solves the problem of charging difficulties mainly through two ways: accelerating the charging speed + relaxing the charging standard. Recently, the Swiss company ABB launched the TerraHighPowerDC fast-charging charging pile with an output power of 350 kilowatts, which is almost three times that of the Tesla super charging pile. In comparison, the CHAdeMODC fast charging technology solution can reach up to 62.5kW, while the J1772level2 solution can reach up to 90kW fast charging. At present, Tesla's super charging pile can provide up to 120kW for ModelS.
If the TerraHighPowerDC fast charge charging pile has completed the compatibility work, then the mainstream electric vehicles on the market can travel 120 miles (200 kilometers) in only 8 minutes. From the perspective of relaxing the charging standards, Tesla CEO Musk said in a recent conference call that the Tesla super charging station is not a walled garden, and Tesla is still open to other new energy vehicle manufacturers. . Of course, these companies need to adapt in accordance with Tesla's existing charging standards. Looking at the country, the current domestic industry is roughly following these two paths.
Due to technical limitations, the country has begun to deploy 120KW charging piles. Take Chongqing as an example. The city plans to build 500 DC charging piles of no less than 60KW in some stations in the main city, some of which can reach 120KW, which can provide charging services for 20 kilometers around the circle, and realize charging in 1 minute at the fastest. With 2 kilowatt-hours of electricity, an ordinary family car can be fully charged in only 30 minutes, and can provide a cruising range of about 200 kilometers. From the perspective of charging pile companies, they are also paying more and more attention to the research and development of 120KW charging piles. Charging pile operator Smart Charging Technology provides six charging products C1, C2, C4, C6, C6s, and C9. Among them, the C6s DC charging pile can bring up to 180Kw of charging power for electric vehicles, which is equivalent to the charging capacity per hour. For vehicles to travel 1,200 kilometers to meet the intensive demand for commercial and public charging in the future.
It is reported that the first C6s charging station of Smart Charge Technology has been deployed to Audi (China) headquarters in Beijing 751. Let’s look at the relaxation of charging standards. In January of this year, the Beijing Municipal Management Committee revealed that Beijing has completed the upgrading of about 12,000 public car charging facilities to the new national standard. After the renovation, the charging piles will implement the new national standard. The versatility of charging piles and newly built charging stations also meet the new national standard. In March of this year, the electric vehicle super charging station independently developed and designed by Zhichong has been officially delivered to the owner Fang Xiaopeng Automobile and put into operation. When Xiaopeng Motor arrives at the charging station of the Smart Charge C9 system, it can be charged by "plugging in the gun".
At the same time, other public vehicles can share charging when they come here, without wasting the construction cost of charging stations. In addition, Smart Charging Technology also initiated the "Urban Charging Partners" plan, dedicated to motivating and fostering charging operators with operational capabilities and resource advantages, and efficiently building a charging service network with strong service capabilities, high levels of intelligence, and nationwide coverage.
In terms of specific practices, Smart Charging Technology will use the company’s self-developed smart charging piles and supporting operating systems to provide various types of partners including commercial real estate, OEMs, travel service providers, and logistics fleets with charging in different scenarios. Station operation solutions. Charging piles must also be intelligent. IoT charging connection in the future. With the popularization of the mobile Internet and the rise of artificial intelligence, charging piles have also begun to catch the "intelligence" express.
Many cities are currently building smart charging piles, which integrate charging, control, cloud communication, and billing functions. After the user enters the charging system, he can charge by swiping his card or scanning the code to get electricity. After the charging is completed, the power is automatically cut off, which can prevent fire caused by overcharging. Scan the QR code to pay via WeChat or Alipay, there is no need to exchange coins at all. For example, Smart Charging combines WeChat with a charging pile, without any APP and plug-in downloads, and without purchasing a charging card. After scanning the QR code, insert the gun tip to start charging. After being fully charged, the official account automatically pushes the charging information, and the charging is completed after WeChat payment. The public account will also remind the car owner to move the car to avoid delay fees for occupying the parking space. The mobile phone can check the charging process and stop charging remotely.
Charging piles and black technology are in the city. If the managers and charging operators are still planning to build charging piles, a wireless charging revolution is coming. In May 2017, Qualcomm announced the completion of the test of wireless charging in electric vehicles, that is, adding inductive charging equipment on the road, so that the car can be charged while driving. Unlike most inductive charging, Qualcomm's Halo technology provides high energy transmission through the air, which is suitable for a variety of vehicle models. With a multi-coil design, even if the charging board is not aligned with the vehicle, it can still carry out efficient energy transmission.
In April this year, the world’s first “electrified road” eRoadArlanda was opened in Stockholm, Sweden. This road can charge electric cars and trucks in motion. The road connects the cargo terminal of Stockholm Arlanda Airport and the logistics area of Ruthersberg. It is 2 kilometers in length and consists of many independent sections of 50 meters. Only the vehicles driving on this section are charged. The electric energy is transferred from the two tracks of the road to the battery of the vehicle through the mobile arm connected at the bottom of the vehicle.
Some domestic experts predict that the current development status of charging piles throughout the country is relatively stable, and high-power charging and wireless charging will become the main development direction of the industry. The concept of wireless charging is now also being tested, and it will not start to land until at least five years later, and the true popularization of applications is estimated to be around 2025.
According to the plan, Smart Charging Technology will integrate new energy power generation micro-grids, and plan to build wireless charging roads on the road sections where space permits. Low-power electric vehicles can be charged on the road when they drive on the charging lane. In addition, the charging road will also be equipped with an energy recovery system to convert pressure and heat into electrical energy. Wireless charging will become an effective supplement to high-power charging. At present, smart charging wireless charging is about to end the research and development process, and will soon enter the commercialization stage.