V2 and V3 charging speed comparison test If you want to popularize pure electric vehicles, solving the problem of energy replenishment is an unavoidable obstacle for this industry. To this end, Tesla has been maximizing the number of self-operated Supercharging stations. However, the power of second-generation overcharging piles currently equipped with overcharging stations is generally 120kW. If the car owner wants to complete charging from 10% to 90%, it will take nearly 50 minutes if the speed is fast. If there is a car diverting nearby, the actual charging time may even double. The long charging time means that despite Tesla’s extensive layout of supercharging stations, supply exceeds demand from time to time. Therefore, it is urgent to improve the charging efficiency of overcharging piles. Tesla’s third-generation overcharging pile with a maximum charging power of 250kW was born under this background.
On December 27 last year, Tesla officially announced that it had completed the construction of Shanghai’s first charging station equipped with V3 super charging piles and opened it to the public. The charging station is located in Jinqiao, Shanghai. There are currently more than ten super charging piles, but only three are V3 super charging piles, located on the side of the charging station.
The officially announced battery capacity of the car is 75kWh, and the NEDC cruising range (check transaction price | model details) reaches 590km. However, it should be noted that the apparent cruising range of the car corresponds to the EPA standard. Under this standard, the car's cruising range is approximately 499km.
◆How fast is the charging speed of V3 overcharging station?
When we borrowed this Model 3, there was about 50% remaining power in the car. In order to simulate the entire charging process as closely as possible, we first consume electricity for the vehicle. When we navigated to the Shanghai Jinqiao overcharging station, the outdoor temperature was 17°C, and the charging environment temperature was relatively suitable.
In terms of charging speed, after charging for about 10 minutes, the vehicle power reaches 45%, and the apparent cruising range is increased by 208km. After charging for about 20 minutes, the vehicle reaches 70% of the battery capacity, and the instrument cruising range is increased by 330 kilometers. In the end, the car took 37 minutes and 26 seconds to charge from 3% to 90%, and the apparent battery life increased by 428 kilometers.
◆ Comparison test between charging speed and V2 charging pile
To give you a reference, we continued to consume 3% of the vehicle’s power and went to a charging station with V2 super charging pile site for comparison testing. Although the test site is an underground garage, the ambient temperature is still 17°C.
Then, we connected the car to the charging gun and used the same test process as the V3 overcharging pile to record time, charging power and cruising range data every 5% power.
The above is the charging power comparison curve of V2 supercharger and V3 supercharger. As can be seen from the figure, the charging power in the first half of the two tests is significantly different. The V2 supercharger reaches a level close to the peak charging power immediately after starting charging and maintains it for a long time. However, the V3 overcharging pile only maintained the peak charging power for about 3 minutes, and then began to decline steadily. However, due to the large base number, the power does not drop to a level similar to the V2 overcharge pile until the power reaches 55%. But when the vehicle power reaches 55%, the charging power performance of the two piles becomes consistent, and even the V2 overcharging pile is slightly ahead.
Next, let’s take a look at the comparison curve of charging time. We can see that when the two cars start charging, the charging time gap between the V3 supercharger and the V2 supercharger has been steadily expanding. Until the charging capacity reaches 55%, the charging time of the V3 overcharging pile and the V2 overcharging pile reaches the maximum difference, with a difference of 7 minutes and 29 seconds, and then the charging time gap between the two begins to narrow slightly. When the charge reaches 90%, the difference in charging time between the two is 6 minutes and 52 seconds.
Summary of measurement comparison:
If we only look at the performance numbers, the peak charging power of Tesla V3 is 250kW, which is twice that of V2 120kw, then we may subconsciously It is believed that the overcharging speed of V3 will be twice that of V2. But after actual testing, we found that this is not the case, because after all, the peak charging power will not be maintained forever. When the charging reaches 55%, the difference between V3 overcharge and V2 overcharge is no longer obvious.
To answer Wenchu’s question, how quickly does V3 overcharge? If the charging range is below 55%, which is ideal for the V3, then the V3 will charge significantly faster than the V2.
Our actual measurement of charging time from 3% to 55% is 13 minutes and 06 seconds, while V2 is 20 minutes and 35 seconds, and the charging time increases by about 36%. But if it is enlarged to the charging range of 3%-90%, the charging speed will increase by about 16%. From this perspective, the V3 overcharging pile is indeed faster than the V2 overcharging pile, but it is not as obvious as the peak charging power difference between the two charging piles. This needs to be understood by everyone.
A big step in the development of electric vehicles
◆How to distinguish V3 multi-stake piles?
In addition to the upgrade in charging speed, the design of the V3 overcharging station has also been improved, but it is difficult to distinguish it from the appearance. Here, we would also like to remind everyone that there are differences between domestic V3 super-grouted piles and foreign designs. Let’s take a look at foreign designs first.
Looking back at China, we don’t know whether the three V3 super-grouted piles in Shanghai Jinqiao are in their final form, but we can see that there are some changes in appearance compared with foreign super-grouted piles.
Generally speaking, there is not much difference in design between V3 super charging pile and V2. But in terms of experience, it is better than V2, which is mainly reflected in the redesigned charging gun and cable, which is lighter and more portable. There are two other sensory differences. When charging, there is an obvious fan sound at the bottom of the V3 overcharging pile. It is inferred that active cooling components have been added. Another point is that when charging, the sound of the vehicle cooling fan is more obvious than that of the V2. This is a two-point change in the charging experience.
◆V3 Overcharging Charging Pile Frequently Asked Questions
Why can’t my car get charging power close to 250kW?
This problem may have many causes. The first is that the model may not support such a large charging power. Among Tesla's own commercial models, currently only the Model 3 long-range version supports 250kW charging power. This is because Model 3 uses the latest battery technology, which is more suitable for high-speed charging. It should be noted that other brands of electric vehicles cannot be charged at Tesla overcharging stations.
Secondly, even when charging the long-range Model 3, due to the relatively low ambient temperature and the vehicle being in a cold charging state, the battery may not be in the optimal charging state, so the charging speed will be slower accordingly. reduce. On the day of the test, an old Model X was charged with a V3 charging pile when the power was less than 50%, and the power was only about 40kW. According to the editor's experience, the charging power will be better when the temperature is generally around 25 degrees, or the vehicle has been preheated by the battery about 20 minutes before arriving at the charging station.
Will overcharging affect battery life?
Here, we tell all electric vehicle owners a way to extend the life of the battery of an electric vehicle, that is to avoid being fully charged or completely discharged. Because overcharging and over-discharging can cause damage to the battery, we recommend that car owners with good charging conditions use a daily power range of 20%-80%. If there are no good charging conditions, try to keep it between 10% and 90%. However, don’t worry if it occasionally exceeds this range. As long as you don't charge and discharge frequently, it won't have much impact on battery life.
Why can V3 overcharge so quickly, but domestic fast charging stations rarely have a charging power of more than 120kW?
Last year, the editor wrote an article "Born from Behind?" Try the original article on Weilai's 105kW ultra-high fill piles, in which the author introduces the current situation of quick-fill piles in China. In terms of charging speed, according to industry insiders, since the charging current of charging piles is not higher than 250A according to national standards, for most electric vehicles using 400V or 500V battery systems, the theoretical maximum charging power they can obtain is only 100kW. -125kW. Even if the power of the charging pile can exceed 125kW, due to current limitations, the charging power of these electric vehicles cannot exceed 125kW.
◆Full text summary: A small step in charging speed is a giant step in the development of electric vehicles.
Once upon a time, under our article, some netizens said that if the battery life of an electric vehicle could reach 400 kilometers, it would have practical value, and then it came true. Some netizens also said that electric vehicles can only meet the conditions for long-distance travel if they have a range of more than 500 kilometers, which was later realized. Now the battery life of electric vehicles has exceeded 600 kilometers, but can we finally stop worrying about the battery life of electric vehicles? You can't.
I would like to ask, if current electric vehicles can be charged for 15 minutes and then go to the toilet to exercise, will they get a range of about 300 kilometers? Will we still be anxious about the range of electric vehicles? At present, Tesla V3 supercharger is very close to this performance, and we expect domestic electric vehicle companies to catch up as soon as possible. @2019