The foreground of 350KW/1000V DC high power charging pile is good?

In recent years, although the market of new energy vehicles has developed rapidly, the key factors that restrict the development of new energy vehicles are the lack of public charging piles, low power battery mileage, and long charging time. Therefore, how to improve the mileage of vehicles and shorten the charging time has become an industry consensus.

The industry believes that the easiest way to increase the range of electric vehicles is to increase the capacity of power cells and increase the voltage of the vehicle's power cells to a maximum of 1000V. The way to reduce the charging time is to increase the voltage of the charge pile output to 1000V under the conditions allowed by the power battery, and to increase the charging current to 350A with a maximum power of 350KW. Therefore, the advantages of high-voltage and high-power charging piles will be more prominent.

At present, many multinational car companies have already begun planning to build a Super charging infrastructure, and the proposed 350kW, 1000V/350A high-power charging. The first ultra-fast charging station in Ionity, the European fast charging alliance formed by Daimler, Volkswagen, Ford and BMW, was launched recently, and users can charge it for free until the end of May. The charging pile is charged through a joint charging system with a charging power of up to 350 KW, which can effectively save charging time. Ionity plans to deploy a total of 100 charging stations by the end of 2018. By 2020, 400 charging stations will be deployed throughout Europe.

It is understood that the Japan CHADEMO Association is also promoting the development of high-power charging technology. However, on the issue of whether to promote a large area of 350kW high-power charging infrastructure, CHAdeMO stated that by 2020, it will not directly build a 350kW high-power charging facility, but will actively test the 350kW high-power charging technology.

CHADEMO's propulsion method is relatively reasonable because high-power charging technology involves many issues, including socket design, temperature management, life management, cooling system, cost issues, and impact on the power grid. These issues need to be constantly explored and actively tested.

For China, at present, China is the world's largest new energy vehicle production and sales, is also the most electric car users. Buses, taxis, logistics vehicles and shared cars have an urgent need for high-power fast charging, shortening charging time, reducing operating costs, and improving operating efficiency. This directly brings about an increase in operating income. In addition, there are fewer parking spaces for electric vehicles in China, and the public slow pile filling effect is not good. Therefore, users also have a certain demand for fast charging. In addition, on the highway, users hope to shorten the charging time and the need for fast charging is even more urgent.

From the perspective of the charging pile enterprise, the charging module is the core component of the DC charging pile. To develop a high-power charging pile, more charging modules must be used, a 350KW DC charging pile. If a 15KW charging module is used, 24 need to be connected. With a 30KW charging module, only 12 parallel connections are required. The less the number of modules in parallel, the more stable and reliable the flow and control between the modules, and the higher the integration of the charging pile system, the more advantageous the cost. Therefore, the greater the DC charging pile power, the more prominent the advantage of the 30KW charging module. Shenzhen Youyou Green Power Co., Ltd.(abbreviated as "Youyou Green Energy") first launched the 30KW charging module in June 2017. It is still the only manufacturer in China with mature 30KW module technology and the only one. Has mass-produced 30KW modules and market tested module manufacturers. Since the power density of the 30KW charging module is as high as 45W/in3, the conversion efficiency is as high as 96 %, the product performance is excellent, and the cost advantage is obvious. It has quickly seized the high-end high-power DC fast charging market.

As early as 2015, when domestic pile companies generally used the 7.5 KW charging module as the core component of the charging pile, Youyou Green was the first to introduce an ultra-small volume 15KW charging module with a power density of 33.75 W/in3, and the output range was already satisfied. 200-750V ultra-wide range, The conversion efficiency is as high as 96 %, and the standby power consumption is less than 10W, leading the technical development of the entire industry charging module. At present, Youyou Green has the most comprehensive product series in the charging pile power module, including: 30KW series, 20KW series, 15KW series, Guonet constant power series, etc., and maintain the leading position of technology and products. The newly introduced 20KW ultra-wide constant power module of Youyou Green Energy can achieve a voltage range of 200-1000V, and smoothly output 20KW constant power in the 400-1000V range, without switching off electricity, this product gets a lot of high-end customers at home and abroad. favor.

Jiangbing, deputy general manager of national power grid electric car service Co., Ltd., made a forecast for the future charging infrastructure market. He believes that by 2020, the price of power cells will drop by half and the energy density will double. With the improvement of charging infrastructure, electric cars are more convenient than fuel trucks in 2020. Electric vehicles generally have a life of more than 400km, and the substitution of electric vehicles for energy vehicles is undergoing a strategic historical process. It is worth mentioning that the charging pile technology will usher in higher standards. In 2018, high-voltage fast-charging joint-venture automotive products will appear in new energy vehicles. Currently, joint-venture automotive companies plan to build high-voltage fast-charging equipment to meet the use of future products.

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