Yesterday I watched a video of "Dolphin In-depth Review", produced by the @Xiaowei test team, which is the most comprehensive and professional electric vehicle evaluation in my opinion so far. Now many car review (self) media still use the old routine of testing gasoline cars in the past, such as using small fists to compare the interior space of the car, commenting on the chassis suspension and so on. I have to say, a bit of water.
And xiao wei test this evaluation, on 4 points, are dry goods:
Acceleration and braking
Noise inside the car
Urban and high-speed battery life (say the power consumption level is more accurate)
Fast charging capability
Each small unit in the video gives a chart of the test results at a glance. For example, the following figure, this kind of car power is only 70kW, the fight is not the focus, but to see the performance of 0 ~ 50kph (the author's note: there will definitely be someone bar, do not say unexpected), this picture with 3 coordinate axes clearly and intuitively shows the acceleration ability of dolphins.
Regarding endurance, this test gives the results of two scenarios of urban working conditions and high-speed working conditions, the most detailed is to list the two indicators of 100 km power consumption level and average vehicle speed, which is a more rigorous attitude than just telling everyone how far they can run. For example, the high-speed average speed of 91kph, experienced old drivers should know what this means, which is basically the working conditions of high-speed top grid driving. It must be emphasized that the average speed of dolphins is 34kph, and the power consumption of urban conditions is very eye-catching, and the level of e-platform 3.0 is really excellent. In my personal opinion, whether the endurance of the electric vehicle is solid, the power consumption level is a decisive parameter.
<h1 class="pgc-h-arrow-right" data-track="11" > best in class: 1.5C fast charge</h1>
This video is the most brilliant unit for the dolphin's fast charging ability, not only looking for a 120kW charging pile, but also a 360kW charging pile. In fact, for charging piles, the important parameters are not only power kW, but also maximum current A, because the charging bottleneck of many electric vehicles is not the power receiving capacity of the battery pack, but the output current limit of the charging pile. Although the nameplate of the charging pile is not seen in the video, the margin of the 360kW charging pile should be large enough, and on this charging pile, the peak charging power reaches a staggering 66kW! Some people may think that 66kW is not too big, but don't forget, the car's battery pack is only 44.9 kWh of electricity, and the charging rate has reached 1.5C. Compared with the same level, whether it is a good cat, ID.3 or Aion Y, the fast charging capacity does not exceed 1C.
I wrote an article on August 15 entitled "Charging for Ten Minutes, Driving 100 Kilometers." BYD Dolphin's strongest 60kW fast charging power in its class. The article mentioned: Dolphin this car nominal maximum charging power of 60kW, battery pack voltage 332.8V, inversion, the maximum charging current is:
Judging from the test of the small test, the maximum charging current did reach 180A, as shown in the following figure.
To achieve this value, the maximum current limit of the charging pile must exceed 180A. The rated parameters of most 60kW fast charging piles are 500V/120A, that is, the maximum current is only 120A. Don't think that the dolphin can boost the charge, the dolphin's battery pack is only 332.8V, no need to boost, nor can it be boosted. On this kind of charging pile, the maximum charging power is approximately:
So don't be surprised when you see that the charging power is only 40kW.
As for the origin of the value of the peak charge of 66kW, my personal analysis is: the battery pack rated voltage is 332.8V, but the lithium battery fully charged voltage is higher than the rated, and the charging pile output voltage must be higher than the battery pack voltage to form a potential difference (such as the pile side output 366V), charge the battery into it.
<h1 class="pgc-h-arrow-right" data-track="21" > digression</h1>
The video of Xiao Wei's test car has less than 5,000 plays 1 day after the watermelon video was published, while other videos of plagiarism and non-knowledge of PPT are often played tens of thousands, which makes people can't help but sigh.
Dolphin is a good car, and Dolphin In-Depth Review is a good video.