With the vigorous development of China’s new energy vehicles, electric vehicles overall technology is constantly rising, it can be seen currently in the market has a growing number of electric vehicles to be put into the market, but for a pure electric car, its need to address the problem still life and charging aspects, but with the continuous battery technology increased mileage is constantly increasing, however, the charging time is still the focus of a new round of problems to be faced and solved.
Recently, the charging infrastructure network in cooperation with suppliers Chargefox Motorists Association NRMA, in Sydney, Australia opened a fast electric car charging stations, at present, the charging station has started online operations.
15 minutes increased driving range 400km
It is reported that rapid electric vehicle charging station will have two 350kW 50kW charging post and a charging post, and, at the same time as three may be pure electric vehicles charging using the charging post 50kW 400km driving range may be added over 15 minutes, while the 50kW vehicle charging station can increase the driving range of 60km over 15 minutes.
At the same time, these companies are constantly accelerating layout, Chargefox plans to build Australia’s nationwide network of charging stations , including the construction of the charging station 21 on the main interstate highway, and the standard electric vehicle charging time to 15 minutes. In other words, as long as this high-speed driving on the vehicle, you can enjoy in just 15 minutes, you can increase the time to refuel 400km driving range, charging time is almost close to fuel vehicles.
At the same time, driven by government policy support, the Australian market will be growing electric vehicle charging infrastructure construction has been expanding in the future, this charging post will be a wide range of popularity, meanwhile, requires only two 15 minutes fast charge, you can achieve driving an electric car from Sydney to Brisbane. Therefore, the construction of charging infrastructure is very important.
not suitable for all high-power electric vehicles
In fact, for such a charging post is 350kW, which is not suitable for small vehicles, on the one hand, the weight of small electric cars lighter, relatively small number of batteries is mounted, so even if a power charging pile, charging may not be able to achieve rapid results, on the other hand, a small electric vehicle battery capacity is not high, if the battery can not provide a greater mileage, the use of which is approximately as long as the charging power 80-200kW can be achieved within 10 minutes it can be filled about a 200 km driving range of electric vehicles.
Moreover, in everyday life, in fact, most of the European electric vehicle battery life is also only about 300 km It does not require the use of high-power charging 350kW, and for slow charging and fast charging can meet ordinary passenger work trips, travel life, long-distance travel, tourism outskirts, emergency travel and other usage scenarios, for high-power charging pile , the vast majority of users are still no special charging requirements. Therefore, even if the fast charge, high-power charging post but still can be widely used in a particular scene requires. Such as highway, such as another vehicle and a shared network about vehicle travel
On the other hand, the use of high-voltage power system, the battery system, a high-pressure protection, high voltage interface, electronic control unit, high voltage transmission circuits and other components the pressure and flow capacity will have higher requirements, therefore, for the use of cost will be greater.
For China,
For China, our country is the world’s new energy automobile production and sales of the most rapid and most countries have a large user base, but China’s electric car parking spaces but less common slow rechargeyour pile effect is not good, so the user for the fast-charging is in need. So, if purely from a user point of view, fast charging pile is very necessary, it not only can quickly fit the user’s car habits, but they can quickly improve user convenience while charging.
However, at present, the domestic high-power charging technology is not universal, high-power charging technology will involve facing a lot of issues, includingSocket design, thermal management, life management, cooling systems, cost and impact on the power grid, etc. These issues need to be resolved through hardware and software, so the rapid spread is not realistic.
for models who, 350kW charging pile may also have certain requirements for the vehicle itself, at the same time, foreign electric car models will be more match for the local development of charging stations, but the other hand, China’s electric car products, mostly with small electric car-based, therefore, difficult to install a smaller space leads to a larger size high-voltage components, for the use of high-power charging is not a small challenge.
In addition, high-power charging will cause some impact on the safety of electric vehicles, how to find a balance between security and fast charging aspects, is still the problem currently facing our country, but also, whether high voltage lead to more serious radiation, the impact on the body, for existing technologies, we can not judge, so fast charging is a good way to solve the charge, but at present, it is not suitable for China market.
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In fact, with the progress of science and technology, regardless of the car manufacturers or power battery manufacturer, may have found a breakthrough point, the battery charge rate in positive efforts in the end the , battery capacity, driving range is constantly increasing, therefore, 350kW charging pile is indeed a very good direction.
However, at present, China for high-power rechargeable power standard in the end is 350kW, or 200kW, or 120kW, the conclusion has not yet appeared, a power which is more stable and more secure, which has yet to be charging mode is more suitable further research, but it is certain that the future of fast charging will be a big trend, but also a focus of car manufacturers and battery manufacturers are most concerned.