Weimar EX5 winter discount range is 6 1%, and it can be driven to minus 14km?

Introduction? |? There is a great difference between north and south.

65438+On February 29th, three media started from Beishangguang at the same time, each driving a Weimar EX5, and started the second round of real endurance competition for pure electric vehicles in winter.

We simulated the normal driving mode of real users, and finally measured its actual endurance in winter. The results are as follows:

For detailed measurement, you can watch the following video:

▲ Weimar EX5 winter endurance measurement? The duration is about 16 minutes. It is recommended to watch it under Wi-Fi.

First, there is a big difference between the north and the south, and the endurance of diesel packages is limited.

Before the formal comparison, it must be explained that Beijing Electric Zhishi and Shanghai Cheju.com borrowed EX5 after many twists and turns. 520, but it's hard to borrow the electric planet news in Guangzhou, because this version is basically not sold in Guangzhou.

Finally, the Guangzhou team borrowed an EX5 from a Weimar owner. 400? Dude? Wei Meng version, NEDC has a battery life of 400km. Considering that the actual measurement is mainly based on the "endurance discount rate", we accept this reality.

This has an impact: Weimar's second generation thermal management system, including PTC electric heating system and diesel heating system, is installed on 520 models in Beijing and Shanghai. And these two functions can't be turned off manually-you click off on the central control panel, but after a while you return to this interface and find it turned on again.

After careful consideration, Beijing and Shanghai think that they should be open. After all, this is the special setting of Weimar winter car, just to test whether it works well. At the same time, you can also compare the use effect with Guangzhou.

The results show that the system has no obvious help for mileage, but it has obvious help for charging speed.

The data shows that Beijing and Shanghai have used the Thermal Management 2.0 system, and the rice endurance of more than 520 kilometers only ran more than 290 kilometers, and the endurance discount rate was 56%. Guangzhou does not have this system, but it can run 309km in 400km battery life, and the discount rate of battery life is as high as 77%.

In other words, Weimar EX5 is equipped with PTC and diesel package, and the cruising discount rate is the worst since the actual measurement: 56% (model? Three is 73%, AION? LX is 67%, Tucki G3 is 62%), but without PTC and diesel package, it achieved the best result: 77%.

Weimar's official introduction is that this thermal management 2.0 system can ensure the normal operation of the battery pack between -30℃ and 50℃, and can increase the battery life by 100km or 20% at most. The principle is that the diesel package belongs to the external heat source, which does not consume the electricity of the battery itself and can reduce the electricity burden of "hot air conditioning". Moreover, because the battery is in a constant temperature state, it is not only useful when discharging, but also has a faster charging speed. However, when we tried it, the battery life did not get longer. On the contrary, when approaching the terminal, the EX5 in Shanghai and Beijing has a battery life of 0%, and no longer shows the emergency of battery life.

Second, what kind of experience is it when the battery life is below zero?

When Shanghai got off the Shenhai Expressway, the remaining power was 3% and the remaining cruising range was 25km. After a while, the battery charge became 2%, and the battery life became-,that is, it was no longer displayed. When I left the ramp of Shenhai, the power finally became 0%. I don't know how many kilometers left in the battery life.

Fortunately, we changed our destination and went straight to the nearest charging station, Yancheng caohejing Development Zone of State Grid. You are not mistaken. This is caohejing in Yancheng, not caohejing in Shanghai.

Because the charging station is relatively hidden, about 6 kilometers below zero, we finally arrived at the charging station. Thanks to the experience of driving Tesla three or four times below zero in the past two years, I am not too flustered. After all, it's convenient to call a tow truck on the highway.

Teachers in Beijing are more thrilling and the process is different.

Close to the Liuzhangzi service area in Chengde, the battery power has dropped to 0%, but the battery life display is still 34km. This is contrary to the situation in Shanghai, where the battery life first becomes zero. I wonder what Weimar's display logic is? According to reason, when the power is displayed as 0, the battery life should no longer be displayed.

Subsequently, when the battery life was less than 27km (Che Jujun thought it should be 25km), Beijing's battery life also became two horizontal lines. The actual driving distance of this section is 4km, the endurance display is reduced by 7km, the vehicle speed is within 40km/h, and the power failure rate is as high as 1: 1.75. When there is a lack of electricity, everything seems to go wrong.

Fortunately, it was downhill at that time, and friends in Beijing simply arrived at Liuzhangzi service area at a speed of 40km/h, from 0% electricity to charging piles, accumulating "driving below zero" 14.3km.

As a result, the teacher of electric intellectuals plugged in the stun gun and could not charge it. This is the battery protection logic of Weimar EX5, because it has been over-discharged. Ask 400 HR customer service, I suggest you let it stand for half an hour and try again. If it doesn't work, it can only be delayed. Fortunately, it can be charged in half an hour.

First of all, I would like to pay tribute to my dedicated friends in Beijing. Secondly, I would like to solemnly remind electric vehicle users: Never turn the battery below 0 before it is finished, which has a great impact on the battery life.

Third, diesel package and PTC working mode

At the charging station, we found one advantage of the diesel package: the charging speed is very fast. It only takes 1 hour to charge from 0km to 520km! This speed is quite amazing, Tesla's model? It is also difficult to charge the electricity from 0 to full in an hour at the overcharge station.

When charging, I obviously heard the sound of diesel engine working under the back seat, and this 10L fuel tank finally came in handy.

The principle of diesel package is not complicated. By burning diesel oil, the liquid is heated and pumped into the pipeline connecting the battery pack for heating, which can be understood as "floor heating" installed on the chassis of the car, and the energy source is diesel oil. The advantage is that it doesn't consume power batteries, and the disadvantage is that it doesn't feel environmentally friendly.

PTC electric heating, which uses sensitive resistors to convert electric energy into heat energy to heat the battery pack, is also the battery pack heating method adopted by most manufacturers at present, which can be understood as "electric heating" and the energy source is power battery. The advantage is low cost and quick effect, but the disadvantage is too much power consumption.

So, what is the working order of diesel package and PTC?

An official PPT shows that when the battery pack temperature is lower than 5 degrees, PTC starts to work and keeps the battery pack temperature at 5 degrees; During fast charging, PTC keeps the battery pack temperature at 25 degrees. The function of that diesel fuel pack is to keep the temperature of the battery pack at 0 degree when the temperature is lower than 0 degree.

Based on this, we suspect that diesel package doesn't work, but PTC does.

The evidence is that there is cold air when the air conditioner is turned on to 22 degrees, indicating that the diesel engine does not work. At the same time, the power consumption is as high as 21kw h/100 km, which shows that PTC consumes some power.

▲ Weimar's second generation thermal management technology, the black container on the left is a diesel tank.

On the way back, I turned on the air conditioner to 26-28 degrees because I no longer counted my grades. Finally, there was warm air! At this time, the diesel engine should work. Teachers in Beijing responded that the weather was so hot that they could drive to 24 degrees-maybe it was colder in Beijing, and the low temperature inspired the diesel engine to start early.

Tucki G3 won't get hot until 28 degrees. The difference between the two may be the difference between a diesel package.

There is another problem: from Shanghai to Yancheng, the lowest temperature in the whole journey is 9 degrees, not less than 5 degrees. Why does PTC heating system work?

There is only one reason: the temperature of the battery pack is not necessarily the same as the temperature outside the car.

By the way, I would like to respond to some readers' questions here: What? What other winter endurance did you test in Shanghai? Is winter in Shanghai called winter?

Excuse me, why is winter in Shanghai not called winter? There is no geographical discrimination in Shanghai now. Why do people still discriminate?

You know, 9 degrees in winter in the Yangtze River Delta is probably worse than 0 degrees in the north. The main reason is high air humidity and active heat exchange. For example, if you sprinkle some alcohol/water on your hands at the same temperature, you will feel colder. Or, running in winter in the north, underwear will feel colder after sweating.

Batteries are similar to people. Its optimum working temperature is 25 degrees, and its upper limit is 38 degrees. 37 degrees and 42 degrees correspond to humans.

Therefore, although the temperature outside the car is only 9 degrees, the temperature sensor in the battery pack thinks that the "somatosensory" of the battery is lower than 5 degrees, so PTC heating is started. This has also caused us to consume a lot of electricity in this trip.

However, Weimar 400 gives a different explanation. A customer service lady said that when the temperature is below 5 degrees, the diesel package will give priority to work to ensure power saving. The diesel oil is used up and then heated by PTC.

This is different from the official PPT statement and our actual experience. We believe that:

The start of heating system is not only related to temperature, but also determined by power consumption. When the air conditioner is set to high air volume, or when driving hard, or when the weather is cold, or when charging quickly, the heating system will start. Low temperature is only one of the excitation conditions, not the only one.

▎ The starting sequence is not necessarily determined by the diesel engine before PTC, but it is still determined by the power consumption. If the electricity consumption was not so large at that time, start PTC first; If the threshold is reached, start the diesel unit again.

The customer service answer may be an ideal state that Weimar engineers hope, but it can't be realized in the current car.

Fourth, is the diesel package useful? Do you want to add?

Is the optional heating package useful? Look at the data first.

If compared vertically, the power consumption of EX5 heating package in Beijing and Shanghai is 21kW h/100km, while the power consumption of the same route in Tucki G3 a week ago was18kw h/100km. Looking at Guangzhou EX5 without heating package, its average power consumption is17.3 kW h/100 km.

Just look at the data in Beijing. The same is the battery life of 520km. Tucki G3 can run 309km at a speed of 72.5km/h; At the speed of 67.8km/h, Weimar EX5 can only jog for 295km-5 km, but its actual cruising range is less 14km.

Just look at the data in Guangzhou. Twice useless warm bag, streaking. At the speed of 85.5km/h, Tucki G3 ran out of the power consumption of17.5 kw h/100 km; At the speed of 87.2km/h, Weimar EX5 ran out of the power consumption of17.3 kW h/100 km-2km faster, but the power consumption decreased by 0.2 kW h..

This shows that if heating package is installed, Weimar's power consumption level is weaker than that of Xiao Peng. If the heating package is not installed, Weimar's power consumption level is slightly better than that of Xiao Peng;

Conclusion: The heating package does not help the battery life obviously, but it obviously improves the charging speed.

Weimar and Tucki both purchased the batteries of Contemporary Amperex Technology Co., Ltd. NCM8 1 1, but the difference is that Weimar only purchased the batteries, and the packaging work was completed in its own Wenzhou factory. Theoretically, it can optimize BMS strategy in time and shorten the promotion speed, which is the embodiment of comprehensive strength. In fact, the actual measurement in Guangzhou proves this point: Weimar's battery pack performs better under normal circumstances.

However, in the winter heating package, Weimar's software strategy obviously has room for improvement.

Tucki is a loyal believer of Tesla, so he has a more mature software strategy, so he is confident that PTC will be installed as standard on all G3 systems, while Weimar needs to spend an extra 2,880 yuan to install it. Then, Tucki can realize the energy-saving driving mode in colder regions through software, which is more efficient than Weimar with plug-in.

Conclusion: It is not necessary to install diesel engine units in the south of Huaihe River, but it can be installed in North China according to the situation. The biggest advantage is not to increase battery life but to shorten charging time, and the air conditioner is warmer. In the northeast, it is recommended to install.

A diesel package costs 8000 yuan, which is not cheap. If the software level is improved in the future, will both manufacturers and consumers save this money?

5. What is the conclusion of the actual measurement in Shanghai?

Finally, we can look at the measured data in Shanghai:

The conclusion is the same as the last G3 in Tucki: there are two nodes that consume electricity: First, when the vehicle speed exceeds 1 10km/h, the power consumption is generally high. Second, the acceleration is the highest and the power consumption is the highest when starting.

Since there is no new dry goods in driving, let's talk about Weimar EX5.

There are three advantages: the chassis is solid, the seats are comfortable, and some humanized designs are more attentive.

For example, there is a USB port in the center of the front seat backrest, which can facilitate the direct charging of the rear passengers, which is much more convenient than putting it in the rear air outlet. In addition, there is a buckle next to the USB port, which can be used to install a small table or clothes rack. It is a small design of DIY at home.

There are also three slots: the instrument display is unscientific, the air conditioner is not warm, and the autopilot auxiliary hotkey is cumbersome.

For example, before departure, Beijing's cruising range was 525km, 5km more than NEDC and 2km more than Shanghai. Guangzhou shows 403 kilometers, 3 kilometers more than NEDC. Watching too much seems like a good thing, but it's actually disturbing. In addition, the power consumption per 100 kilometers is a very important parameter, but it is not displayed on the dashboard. You need to press the two-level menu on the central control panel to adjust it. I don't understand it very well.

The air conditioner is not warm, similar to Tucki G3. The only strange thing is why the diesel package is not warm?

Alive The operation of the Pilot automatic assisted driving system is still too traditional, and it needs to be pressed four times to activate. In Tesla and Tucki, it only takes once.

Jeju tubercle

On the whole, the product strength of Weimar EX5 is relatively balanced, with no outstanding items and no obvious shortcomings. There is nothing wrong with this "popular" concept of building a car, which can help new enterprises survive first. But we still have to attack and defend well.

The attack means that there is still a lot of room for improvement in software management, from when and how the diesel package participates in the work to the rationality of the display in the power-off state. Maintaining is to adhere to the self-production mode of Wenzhou factory and ensure the reliability and iteration of hardware.

Weimar recently launched a new car EX6? In addition, there should be better performance.

The activity is called: Winter Pure Electric Vehicle Live-action Competition, with the participation of media from three places, joint testing in three places and live broadcast. The sponsor is Baidu car driver, and the support platforms are: Baidu APP, Baidu No.,Baidu Post Bar, good-looking video and live broadcast.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.