I always see some people's comments saying that 800V is completely useless.
There are two sides to everything, and the importance of 800V is becoming more and more prominent with more and more fast charging piles, especially in terms of user perception, and the convenience brought by high-voltage fast charging is becoming more and more obvious.
High voltage means high-power charging, which is also charged into 200km of battery life, and 800V vehicles can save more than 30% of time.
As we said before, the charging speed of electric vehicles is currently determined by two factors, one is the vehicle itself, and the other is the charging pile.
There are two parameters of the charging pile, one is the maximum output voltage, the other is the maximum output current, with the maximum voltage that the vehicle can accept, then the charging power (speed) is determined by the shortest board of the three.
At present, most of the charging piles on the market have a power of 120kW, and the cost of a double-gun fast charging pile is about 30,000 yuan, which is the best choice for external commercial investors.
But in fact, the 120kW charging pile can't even provide the maximum power of a 400V vehicle.
Generally speaking, the current new 120kW charging pile is a maximum voltage of 1000V, and the current provided will not exceed 200A, that is to say, if it is a 400V vehicle, the charging voltage is 400V, and the charging pile can only provide a current of 200A in theory.
The charging power hovers around 80kW, which is the maximum power (fastest speed), and in fact, the average charging power only hovers around 60kW.
If it is an 800V vehicle, the charging voltage is assumed to be around 700V, then the charging power can eat up to 120kW charging pile.
The significance of 800V is that on a relatively low-power charging pile, you can try your best to eat up the power of the charging pile, because the charging speed of the low-power charging pile itself is not fast, and the output current is within 200A.
Some low-power charging piles can only provide 100A of current, if it is a 400V vehicle, the charging speed can only be 40kW, and an 800V vehicle can eat 60kW or even 80kW.
Therefore, the significance of 800V is definitely not simply an advantage in high-power charging piles, but also advantages in low-power charging piles.
If you take a step back and look at high-power charging piles, 800V products are more powerful.
The 1000V, 600A liquid-cooled pile can make any car reach the maximum charging power designed, and the charging power of 800V vehicles, taking Zhiji L6 as an example, the charging voltage reaches 900V, the charging current exceeds 400A, and the charging power can exceed 350kW.
The price of this 800V vehicle is less than 250,000.
If the budget rises to more than 200,000, it is still a wise choice to give preference to 800V products, because 800V products can effectively alleviate charging anxiety and squeeze out the power supply capacity of each fast charging pile as much as possible.
In addition, in the energy replenishment link, every minute shortened, the experience will be better, 20 minutes full and 35 minutes full, the difference is definitely not a 15-minute gap, more important is the convenience and experience of energy replenishment, 800V products are better.