"How does this car's 550km endurance perform in the north?"
In the previous XCX-Test, we tested the pure electric endurance of Volkswagen's first pure electric vehicle model in China, FAW-Volkswagen ID.4 CROZZ.
The test was in the summer, so friends in the north looked at the summer endurance test results and were curious about the FAW-Volkswagen ID. Winter performance of the family.
No, winter is coming, and we're just starting.
So, after entering December, we found the FAW-Volkswagen ID. Two models of the family (ID.4 CROZZ and ID.6 CROZZ) went to Beijing Miyun Reservoir for a endurance test around the lake.
Take a look at the FAW-Volkswagen ID through actual measurements. The family's two pure electric models based on the MEB platform have a battery life performance in the low temperature environment of the northern winter.
Written on the front: An introduction to testing standards
First of all, in terms of route selection, this time we went to a colder place than in Beijing, that is, from the Beijing Bay Mid-Levels Hot Spring Hotel, through Miguan Road, Liuxin Road and Mijing Road, and finally arrived at the Beijing Bay Mid-Levels Hot Spring Hotel.
This road is mainly around the Miyun Reservoir, and the entire test route not only has a relatively low temperature of -2 °C ~ 4 °C, but also some climbs brought about by some winding roads and 300 meters of altitude difference.
Therefore, this road around the lake is more complex and harsh than the urban road, covering the "low temperature and climbing" that pure electric vehicle models are most afraid of, so the impact of such an environment on the endurance of pure electric vehicles is also relatively large.
About the setting of air conditioning and driving mode
In the low temperature environment of the north, we have set the air conditioning of all vehicles to 23 degrees Celsius AUTO mode with the comfort priority to ensure a comfortable car experience in the car.
In terms of the design of the driving mode, we also adopted the B gear kinetic energy recovery energy saving mode. In addition, in terms of tire pressure, we also made the official recommended value tire pressure.
Finally, two adults weighing 60-75kg will also be seated on the car, and the two will also rotate during the ride to ensure the fairness of the test.
Faw-Volkswagen ID.4 CROZZ endurance achieved by 84%
After introducing the specific test route and vehicle setting standards, we will next clear the vehicle subtotal mileage, and then start the test directly after zeroing.
The first is the FAW-Volkswagen ID.4 CROZZ, as the first pure electric vehicle model launched by FAW-Volkswagen in China, and the price of the new car after subsidies is 19.99-27.99 million yuan.
At this price, the FAW-Volkswagen ID.4 CROZZ offers NEDC range of 405km, 513km and 550km. This time we got the PRO version of NEDC with a 550km long battery life.
In the end, after actual measurement, after driving from 100% power to 0 battery, the FAW-Volkswagen ID.4 CROZZ drove a total of 462km, which reached 84% of the official NEDC.
Judging from the measured results, the FAW-Volkswagen ID.4 CROZZ has a good performance in the outdoor temperature environment of -2 °C ~ 4 °C, experiencing a large number of undulating winding roads.
From the perspective of the endurance curve change chart, the faw-Volkswagen ID.4 CROZZ is not very linear in the test, but this does not mean that the FAW-Volkswagen ID.4 CROZZ vehicle has a good battery life.
It's faw-Volkswagen ID. The family model uses a "dynamic" display logic, under which it displays the remaining mileage based on the environment, traffic intersections and personal driving habits. There will be two more logics under this criterion;
When the remaining power is relatively high, it will be dominated by relatively stable data, and the data with high instantaneous power consumption will be filtered out;
When the remaining power is relatively low, the weight of instantaneous power consumption will be increased to ensure that users can obtain more accurate remaining battery life in time.
That's why the entire curve of ID.4 CROZZ doesn't look so straight and average.
Measured FAW-Volkswagen ID.6 CROZZ endurance achieved 80%
After testing the FAW-Volkswagen ID.4 CROZZ, the next is the FAW-Volkswagen ID.6 CROZZ, and the price range of the new car after subsidies is 239,800-33.48 million yuan.
At this price, the FAW-Volkswagen ID.6 CROZZ offers NEDC range of 439km, 516km and 565km. This time we got the NEDC version with a range of 565km.
Finally, after actual measurement, after starting from 100% power and finally driving to 0 power nest, FAW-Volkswagen ID.6 CROZZ drove a total of 452km, which reached 80% of the official NEDC.
Judging from the measured results, as a 6/7-seat medium and large pure electric SUV, the overall performance of the FAW-Volkswagen ID.6 CROZZ is still good.
Moreover, from the perspective of the endurance curve change chart, the FAW-Volkswagen ID.6 CROZZ in the test is similar to the ID.4 CROZZ, which shows the remaining mileage "dynamically", so the entire curve will change a little more.
Compare test scores for Why ID. The series will have such a surprise performance
Judging from the test results, whether it is the FAW-Volkswagen ID.4 CROZZ model or the FAW-Volkswagen ID.6 CROZZ model, in this round miyun reservoir, after experiencing the low temperature of -2 °C to 4 °C in the north, the climb brought about by the 300-meter altitude difference and the winding environment, both vehicles have achieved good results.
So behind such achievements, FAW-Volkswagen ID. What does the family rely on?
As one of the biggest pain points of pure electric vehicle models, battery life has always been the focus of discussion among potential consumers, and in the past few years, in order to improve battery life, various car companies have given different solutions.
And landed to the FAW-Volkswagen ID. In terms of family, they have given high-energy density battery packs, energy recovery systems, optimization of the vehicle's wind resistance coefficient, and equipped with the world's first carbon dioxide heat pump air conditioner (ID.6 CROZZ) and other technologies.
1. High energy density battery pack
Pure electric models want a stable long endurance must rely on "high energy density large capacity battery" to achieve, so "high energy density large capacity battery" is the basis of long endurance, especially for the north of this 0 ° C environment.
Therefore, in terms of battery pack systems, FAW-Volkswagen ID. The family adopts the Ternary lithium battery with NCM811 ratio in the Ningde era, and the system energy density is 175Wh/Kg.
Compared with low energy density battery packs, high energy battery packs can be placed in the same space with larger battery packs.
At the same time, match the volkswagen MEB pure electric exclusive platform, the final ID. The series enables up to 84.8kWh battery pack placement.
Under such a battery layout, the Volkswagen MEB platform has also made 360-degree multiple protection for the protection of the battery pack.
The first is that the battery pack uses all-aluminum materials, and on this basis, there will be a corresponding reinforcement structure inside the battery pack. At the same time, the outer upper shell and lower shell of the all-aluminum battery pack will be protected by a layer of steel plate material.
Among them, the upper cover is made of steel mainly to meet the battery pack accident, you can ensure that passengers have time to leave the vehicle; the lower shell protection plate is better to protect the bottom of the rubbing.
Therefore, faw-Volkswagen ID.4 CROZZ and FAW-Volkswagen ID.6 CROZZ with "high-energy density and high-capacity battery" do not have to worry about the safety of the battery pack at all, you just need to enjoy the long battery life it brings.
2. Carbon dioxide heat pump air conditioning
The basis for long endurance is a "high energy density and large capacity battery", but under this basis, the air conditioning system has a very large impact on the endurance of pure electric vehicle models.
Unlike traditional fuel vehicles that rely on engine waste heat for heating in the low temperature environment in winter, pure electric vehicle models do not have an engine to generate waste heat for heating.
Therefore, we can see that most of the pure electric vehicle models on sale at this stage rely on PTC heating, relying on PTC heating although the speed is very fast, but its disadvantage is "electricity-intensive", especially for the pure electric vehicle model, which is not much battery capacity.
Therefore, later some pure electric vehicle models chose to use heat pump air conditioning. Although the heat pump air conditioner is energy-saving, its performance in low temperature environments is not as fast as PTC heating.
So under such a "dilemma", Volkswagen launched a carbon dioxide heat pump air conditioner, that is, using carbon dioxide as its refrigerant.
The advantage of carbon dioxide is that it has a lower boiling point, compared to the boiling point of about -30°C of R134yf, the boiling point of carbon dioxide is about -78.5°C.
The advantage of the lower boiling point is that when the ambient temperature limit is low, the carbon dioxide heat pump can still obtain heat from the ambient temperature to heat the interior of the car.
In an outdoor environment of 0°C, vehicles with CO2 heat pumps consume 40% less energy to heat the cabin than with PTC.
Moreover, Volkswagen's co-20 heat pump air conditioner itself is like an eight-catch fish, consisting of eight solenoid valves (5 shut-off valves and 3 expansion valves), which can realize the switching of 4 refrigeration modes and 3 heating mode scenarios;
Refrigeration and cooling: separate refrigeration in the car, refrigeration in the car and battery cooling, battery cooling separately and reheating (dehumidification) in the car.
Heating and heating in the car: heating by air heat pump alone, heating by air and coolant heat pump, and heating by coolant heat pump alone.
In simple terms, when an area needs to be heated separately, the system can choose to heat the area alone, or it can choose to divert heat from other higher temperature areas to the area for heating.
In the end, energy savings can be achieved by relying on different heating or cooling requirements in different environments.
3. Energy recovery system
In addition to "high energy density high-capacity batteries" and carbon dioxide heat pump air conditioners, there is also an energy recovery system.
FAW-Volkswagen ID. The family uses a new generation of electronic brake boosters (EEB), which can achieve energy recovery throughout the braking condition.
When combined with the electronic stabilization program ESC to form a regenerative braking system, the vehicle can achieve braking energy recovery with deceleration values up to 0.3g, and more than 100% braking energy recovery if the motor capacity meets the braking requirements.
Such a kinetic energy recovery system for urban vehicles, especially in the case of frequent acceleration and deceleration, the entire energy consumption will be optimized, bringing more energy-saving performance.
4. Ultra-low wind resistance coefficient
In addition, FAW-Volkswagen ID. The family has also made great optimizations in terms of wind resistance coefficient, achieving energy savings by reducing wind resistance and rolling resistance.
Specific to the model, FAW-Volkswagen ID. The family model featured concealed door handles, large tail fin design, low wind resistance wheels and active grille to reduce wind resistance.
Therefore, the FAW-Volkswagen ID.6 CROZZ has the leading drag coefficient Cd=0.28 in the same class. At the same time, the vehicle chassis also uses a fully wrapped bottom armor, including low roll-off tires, which also adds a lot of cruising range to the vehicle.
Therefore, in this winter endurance test challenge, FAW-Volkswagen ID. The series can have such a battery life performance relying on "high energy density and large capacity battery", carbon dioxide heat pump air conditioning, energy recovery system and ultra-low wind resistance coefficient.
Editor's summary: Following the previous summer XCX-Test standard testing faw-Volkswagen ID. After the family model lasts, this time in the winter we went to Miyun Reservoir for a battery life test around Miyun Reservoir.
Under the endurance test standards of the summer and winter seasons, we can see the FAW-Volkswagen ID. The authenticity of the entire family endurance is relatively high.
Among them, the FAW-Volkswagen ID.4 CROZZ measured 462km, reaching 84% of the official NEDC; the FAW-Volkswagen ID.6 CROZZ measured score of 452km, reaching the level of 80% of the official NEDC, and is in the environment of -2°C~4°C Beijing Winter Ring Miyun Reservoir.
At the same time, FAW-Volkswagen ID. The "dynamic" residual endurance display logic of the family model is also very accurate, and this accurate residual endurance display will be more valuable for users, and users can better plan their trips when traveling.