How long will it take for new energy vehicles to enter the era of overcharge？
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Some research shows that slow charging is one of the core pain points for users of new energy vehicles to replenish energy. Since the beginning of this year, many places have successively issued policies to speed up the construction of overcharging stations. However, the construction of over-charging station is facing some problems, such as insufficient grid power, high investment cost, long payback period, few charging models and difficult compatibility. Industry insiders suggest that it is necessary to promote cooperation and exchanges between upstream and downstream enterprises in the industrial chain, promote cooperation between new energy automobile manufacturers, charging facility operators and other related enterprises, and jointly promote the construction of "overcharged city".
"I saw on the small program that it can be charged here, so I stopped by and it was fully charged in less than 10 minutes." Recently, Mr. Mi experienced the super fast charging of new energy vehicles for the first time in the Changzhen service area of Shenzhen Expressway in Guangming District, Shenzhen, and repeatedly lamented that it was very fast and convenient.
"One kilometer per second", "One cup of coffee, full charge" … … Recently, many places across the country have proposed to build a "city of overcharging", intensively introduced relevant policies, and accelerated the construction of overcharging stations.
Has the era of overcharge of new energy vehicles arrived? In this regard, industry insiders told the Workers Daily reporter that the application of overcharge technology will bring many changes to the market and consumers. However, at present, the construction of overcharge stations still faces problems such as insufficient grid power, high investment cost, long payback period, few charging models, and difficulty in compatibility. It is necessary to work together to strengthen industrial cooperation, optimize the layout of charging networks, and establish special subsidies for the construction of overcharge equipment.
Slow charging is the pain point of recharging.
"New energy vehicles are accelerating penetration. However, at present, the charging operation service is mainly based on ordinary DC fast filling piles, and the charging time is relatively long." Chen Tianshun, general manager of Shenzhen Bus New Energy Co., Ltd. introduced.
Mr. Mai, a citizen of Shenzhen, is a loyal fan of new energy vehicles, but considering the convenience of travel, he chose a hybrid vehicle. He admits that if the number of over-filled piles is enough and it is easy for mobile phones to find, he will consider switching to pure electric vehicles.
According to the research of Yiou think tank, in the charging mode of new energy vehicle users, slow charging accounts for over 50%. When charging with public fast-charging piles, the proportion of charging time longer than 40 minutes is as high as 44%, which is also one of the core pain points for users to replenish energy. 84% of users have expressed their approval attitude towards overcharge, and the market expectation is high.
With the popularization of new energy vehicles, it is the future trend to overcharge and replenish energy. Since the beginning of this year, many places have successively introduced policies to speed up the construction of overcharging stations. Recently released "Special Plan for Overcharging Facilities of New Energy Vehicles in Shenzhen (2023-2025)" (hereinafter referred to as the plan) once again sounded the clarion call for the construction of "Overcharging City" in Shenzhen. According to the plan, by the end of 2023, no less than 150 public overcharging stations will be built in Shenzhen; By the end of March 2024, no less than 300 public overcharging stations will be built.
It’s not just Shenzhen that is accelerating the construction of "Overcharged City". For example, Beijing has publicly solicited opinions on the construction and operation incentives for charging and replacing facilities. Among the operating incentives for public charging facilities, the maximum subsidy for over-charged piles is 216 yuan/kilowatt year; Guangzhou launched the "Super Charging Capital" plan, clearly supported the super high-power fast charging technology, and made great efforts to build a multi-level, multi-category and multi-scenario charging system; Hainan initiated the construction plan of "Overcharged Island", and proposed to build over 400 overcharged stations … …
Refueling charging experience
"The power is from 20% to 90% in 30 minutes." Mr. Gao, a citizen of Shenzhen, will go to Jingtian Wal-Mart Super Charging Station every weekend to charge, plug in a charging gun, go into the supermarket to buy some daily necessities, and when he comes out, he will be fully charged, and he can park for free with the charging record.
"One kilometer per second" gives consumers a refueling experience. According to Shenzhen Power Supply Bureau of China Southern Power Grid, compared with ordinary 60 kW charging piles, the charging speed of super-charged piles is 10 times as fast as that of ordinary piles.
The main difference between overcharging, fast charging and slow charging lies in the difference of output voltage and current. Talking about the highlights of overcharging technology, Han Tao, vice president of Shenzhen Yingfeiyuan Technology Co., Ltd. Group, said that overcharging and fast charging are high-power DC charging, and the overcharge charging power is generally above 360kW. Overcharging 480kW can increase the battery life by 250 kilometers in 5 minutes and can be fully charged in 10 minutes; Fully charge 80% of the electricity within one hour; Slow charging basically takes one night to fill. The charging guns used by the three are also different. Only liquid-cooled guns can be used for overcharging, which greatly reduces the difficulty of the owner’s operation, while the conventional guns for fast charging and slow charging are thicker and heavier.
The reporter learned that Futian Shenkang Super Charging Station, jointly built by Shenzhen Bus New Energy Co., Ltd. and Shenzhen Yingfeiyuan Technology Co., Ltd., integrates photovoltaic station, energy storage station and electric vehicle charging and discharging station, realizing "multi-station integration".
Still face many problems.
Does it mean that the era of overcharging is about to open? The interviewed enterprises all said that the construction of overcharged equipment still faces pain points, mainly reflected in the lack of power grid, high investment cost, long payback period, few charging models, difficult compatibility and insufficient charging infrastructure.
"Overcharging equipment is more technically difficult, which requires not only higher charging power and faster charging speed, but also safety and reliability. Therefore, it is necessary to upgrade the power grid, increase the energy storage system and invest more money. At the same time, a large number of vehicles are needed to improve the utilization rate of overcharged equipment in order to achieve the expected benefits of the site. " Han Tao bluntly said that there are not many models supporting overcharge on the market at present, and the development of overcharged vehicles lags behind the development of overcharged equipment. The overcharge compatibility of different models is also different, which requires different interfaces and power. At present, the "Chaoji" charging standard has just been released, and it will take time to implement it.
In view of the problem that there are few models supporting overcharge in the market at present, Chen Tianshun believes that from the industrial point of view, it is necessary to speed up the technical iteration of overcharge models in the process of promoting the construction of overcharge stations, so that more models can be compatible with overcharge efficiency. On the other hand, it is also hoped that the relevant government departments can give certain policy subsidies to enterprises that build overcharged stations.
Regarding how to promote the further landing of overcharged stations, Han Tao believes that it is necessary to promote cooperation and exchanges between upstream and downstream enterprises in the industrial chain, promote cooperation between new energy automobile manufacturers, charging facility operators and other related enterprises, and jointly promote the construction of "overcharged city". At the same time, enterprises and research institutions are encouraged to strengthen the research and development and innovation of overcharge technology to enhance the scientific and technological content and competitiveness of charging facilities.