Bmw counterattack: test drive long-life intelligent pure electric BMW iX3

After a period of waiting,165438+1October 23rd, we ushered in the most important electric vehicle type of BMW group-innovative pure electric BMW? IX3' s media test drive was held in Tang Xi Ancient Town, Jiaxing, Zhejiang Province, which is a place full of the beauty of Jiangnan water town and the cultural heritage of Jiangsu and Zhejiang. They are also very famous ancient towns. Xitang in early winter is less noisy and noisy in Wuzhen, and more serene and elegant.

Immersed in the slow-paced life of the ancient town of Tang Xi, you will fall in love with zero-emission travel and don't want to go back to Beishangguang. Flying on the expressway from Jiaxing to Hangzhou, you will also love the speed of electric cars. Picking and cooking in the organic farm of Liangrang Hotel like a farmer is a rare green and healthy living experience.

All this is related to the protagonist of our article today-innovative pure electric BMW? IX3' s style fits perfectly, as quiet as a virgin, as moving as a rabbit, with zero emission and sustainability.

Driving a revolutionary BMW? Nearly 10 years after I was released, its innovative technology was first applied to X3, the core model of BMW brand, creating a BMW with luxurious quality, pure driving interest, long battery life, high safety and intelligent technology. IX3, a strategic model, has become a powerful weapon for BMW Group to embrace future travel and meet challenges in the global automobile industry's transformation to "new four modernizations".

Design: there is a breakthrough in inheritance

BMW? Is iX3 designed to keep BMW? X3 design style, but also into some BMW? I's exclusive design elements have achieved a breakthrough in inheritance.

The kidney shape of the front face is outlined with blue shadows, and the whole middle area is made of simple and scientific black panels. Hidden semi-closed structure can not only reduce wind resistance, but also retain the function of air intake and heat dissipation.

Blue decorative plates are installed under the doors on both sides, and the blue spoilers on both sides of the rear bumper not only have aerodynamic functions, but also show their identity as new energy vehicles.

Compared with fuel vehicles, BMW's latest generation aerodynamic wheels can reduce aerodynamic drag by 5%, and the lightweight design can reduce unsprung weight, optimize vehicle handling performance and improve vehicle energy efficiency.

BMW? The interior design of iX3 is consistent with the current X3, and BMW features such as the center console slightly tilting to the driver's side and the electronic shift lever with "drumstick" are very obvious.

Is the interior also integrated into BMW? I exclusive design elements, such as BMW? I logo metal door trim, center console independent BMW? Details such as IX3 logo, blue start button, blue atmosphere light, and blue trim on the gear lever all enhance the sense of technology in the cockpit.

BMW's 7th and 7th generation iDrive human-computer interaction systems adopt 10.25-inch floating LCD touch screen and 12.3-inch digital dashboard, which supports various human-computer interaction modes such as voice, touch, gesture and iDrive knob. The latest version of BMW's intelligent personal assistant can control vehicle hardware and software equipment.

The car terminal integrates applications such as Tmall Elf, QQ Music, Himalayan Music and Watermelon Video. It is also equipped with Tencent's small scene ecological open platform, allowing third-party service providers to connect applications to cars through the platform.

Safe as ever? I can't emphasize it too much.

When it comes to the safety of pure electric vehicles, there is no doubt that the battery system bears the brunt.

BMW? IX3 adopts NCM8 1 1 battery with high energy density. The battery core is provided by Contemporary Ampere Technology Co., Ltd., and BMW designs and produces battery modules and battery systems by itself. The total capacity of the battery is 80kWh, the usable capacity is 74kWh, and the energy density of the battery system reaches 154Wh/kg.

From a design point of view, BMW? IX3' s battery pack should balance performance, energy density, cruising range, safety, quality and reliability in the whole life cycle, and BMW puts safety first.

According to the explosion diagram of the battery pack, the battery pack adopts an aluminum alloy shell, and a buffer structure is also designed between the module and the battery pack shell. The battery module itself also has an energy-absorbing structure, and the multi-layer safety design reduces the possibility of damage to the battery cells caused by side collision in accidents.

In addition, the battery pack is arranged in the central area of the vehicle chassis, which increases the overall rigidity of the vehicle and reduces the risk of direct impact on the battery pack caused by front and rear collisions in accidents.

At the module level, 188 batteries are divided into 10 modules, and the production line 100% is automated. Insulating membranes are installed between each battery in the module to ensure that the batteries are insulated from each other. The lower layer of the module is a cooling plate, which can cool the battery and heat the battery.

The battery core adopts mechanical top cover to prevent extrusion, explosion-proof valve to release pressure in time, aluminum shell to resist compression, etc. In order to reduce the influence of thermal runaway of a single battery core on the battery pack. BMS monitors the current, voltage and other operation data of each battery cell, which further improves the safety.

Besides, BMW? IX3' s battery pack has passed as many as 128 rigorous mechanical verification tests and 994 software verification tests, such as fire, seawater immersion and acupuncture. , which can meet the global market regulations and BMW's strict quality standards.

In terms of charging, BMW? IX3 adopts integrated charging unit, which integrates DC and AC charging control and management functions of vehicles. The maximum power of DC fast charge can reach 100kW, and the battery can be charged from 0 to 80% in 45 minutes. AC slow charging is compatible with charging voltages of 380 volts and 220 volts, and the maximum power can reach 1 1kW, which can be fully charged in 7.5 hours.

The electric drive is uncompromising.

BMW? IX3 is the first BMW model equipped with its most advanced fifth-generation eDrive electric drive technology. Compared with the previous generation technology, the power performance, endurance and energy consumption have been significantly improved.

BMW? IX3 weighs 2.2 tons, but its endurance reaches 500km ahead of its peers. The power consumption per 100 kilometers is as low as 16.7kWh, and the acceleration time from zero to 100 kilometers is only 6.8 seconds. Some people may think that this level of motivation is just? So what? So, please don't forget, this is just a single motor rear drive.

So, why doesn't BMW design a dual-motor iX3? On this issue, I have consulted BMW experts, and there are two main considerations. First of all, for most users, this power level is more than enough for daily use. Secondly, the dual-motor version will undoubtedly increase the cost and price and raise the threshold for customers to buy.

The maximum output power of the "three-in-one" electric drive assembly is 2 10kW (the power density is about 30% higher than that of the previous generation technology), and the maximum torque can be 400Nm when starting, and the excitation synchronous motor can still maintain a stable torque output in the high-speed area.

As for the influence of excitation current on vehicle endurance, according to BMW's technical experts, the power consumption for excitation is very small, which has little influence on cruising range, and the demagnetization of permanent magnet motor will not occur in the excitation motor.

Judging from the actual driving experience, BMW's interest in electric driving has always been true.

BMW? IX3 has sports, comfort and ECO? PRO has three driving modes to choose from, and the switch button is on the left side of the shift lever. In different modes, the dynamic response speed has little change, but the steering feel and the comfort of chassis adjustment have obvious changes. In the comfortable and energy-saving mode, the excitation of the motor will be reduced, thus reducing the energy consumption of the system and increasing the cruising range.

With a fuel version of BMW? Compared with X3, the dynamic response of iX3 is faster and more direct. Whether it is the initial stage or the acceleration in the middle and late stage, the motivation is very abundant and there is a sense of continuous flow. At the same time, because the battery pack is placed flat in the center of the chassis, not only the center of gravity of the vehicle is reduced, but also the front and rear weights of the vehicle are more balanced, and the stability of the vehicle body on corners is better.

The weight of the battery pack is about 600kg (the specific data is unknown), and the aluminum alloy lower shell of the battery pack itself is a part of the chassis structure. Therefore, when the vehicle is driving, the chassis feels thick and compact, and there is no feeling of looseness. The suspension adjustment is slightly hard, and the comfort is also taken into account.

During the test drive, I chose sports mode most of the time. Not only the dynamic response is very sensitive, but also the high-speed acceleration potential in the middle and late stages can not be underestimated. The steering feel of the steering wheel is biased, but the direction is very accurate.

On the night of the test drive, when we returned, we drove in formation on the high speed, and the speed remained at 100- 120km/h throughout. Although the road surface is slippery and the rain on the face slightly affects the line of sight, the vehicle performance is very stable.

But for the sake of safety, I still turned on the distance control function. The system shows that the camera and radar are still working normally, which can also help me control the speed. Despite some challenges, the driving experience in this section is very good, and the media in the same car also gave high praise.

In this test drive experience, BMW also arranged the Golden Cana Challenge, which allowed us to experience BMW in a relatively limited state. The handling performance of iX3. BMW's skill in vehicle dynamic performance adjustment is reflected in the instant push-back feeling of stepping on the accelerator pedal during linear acceleration, the support of suspension during high-speed continuous steering, the change of feel with speed steering, and the stability of the car body brought by low center of gravity.

Adaptive energy recovery is efficient and intelligent.

BMW? The cruising range of iX3 is dynamically adjusted according to the real-time energy consumption. The purpose of this is to provide drivers with more reliable available mileage data, facilitate users to plan their trips and charge, and minimize unplanned charging.

In our actual driving of nearly 200 kilometers, we have reached the official minimum energy consumption 16.7kWh/ 100km (as evidenced by the above picture). But most of the time, the power consumption per 100 kilometers is between 18-20kWh.

Of course, low energy consumption requires many efforts, besides the aerodynamic design of the vehicle itself (the drag coefficient is as low as 0.29Cd) and the efficient energy management of BMW's fifth-generation eDrive technology, adaptive energy recovery is also very important.

Pushing the shift lever to the left in the D position will enter the B position, and the vehicle will start the energy recovery mode. This design should consider the use habits of BMW fuel owners-the previous S gear has now been changed to B gear.

The energy recovery intensity of block B is the highest, and the owners who are used to the driving mode of fuel vehicles can actually use the D block with adjustable energy recovery first. Moreover, unlike other pure electric vehicles on the market, BMW? There is an "adaptive" option in the energy recovery intensity setting of iX3, which is very intelligent.

The principle of this function is to determine the intensity of energy recovery by sensing whether there is a car ahead, the distance between the car and the front car, the relative speed of the two cars and other data through the camera and radar. If there is no car ahead, release the accelerator pedal and the car will be in a taxiing state. If the vehicle is far away from the preceding vehicle and the relative speed of the two vehicles is low, the energy recovery intensity will be relatively small when the accelerator pedal is released, and vice versa.

Automatic driving is comparable to old drivers.

BMW? IX3 is equipped with the latest BMW autopilot assistance system Pro of BMW Group, which can realize L2 autopilot function.

This system is the most advanced driver assistance system currently used by BMW Group's production cars. Its main functions include two aspects: first, cruise functions, such as active cruise control, traffic congestion assistance, speed limit identification assistance, lane change assistance, etc. Second, safety functions, such as front collision warning and emergency braking assistance, emergency avoidance assistance, emergency parking assistance, lane rectification assistance, side collision prevention assistance, lane change blind zone warning, cross collision warning, rear-end warning, etc.

In euros? In the NCAP (European Association for New Car Safety Assessment) driver assistance assessment, the new BMW? Pro, the autonomous BMW driver assistance system equipped with the 3 Series, won the highest "Very? Good "rating, get the euro? NCAP's favorable comments prove the maturity and perfect customer experience of this technology.

In urban traffic jams, when the speed is lower than 60km/h, the congestion assistance function can be started, and the driver can get rid of it for a long time, but the driver still needs to keep his attention, otherwise the system will prompt him to quit. The vehicle automatically follows the preceding vehicle, making the whole journey easy and natural. Whether it is the timing and intensity of acceleration and braking, or the angle and intensity of direction correction on corners, it is properly controlled.

When the vehicle speed exceeds 70km/h, the automatic lane change function can be started, and the vehicle can automatically detect the surrounding environment by gently turning the turn signal. If there is no oncoming vehicle behind the target lane, or the oncoming vehicle is far away, the vehicle simply merges into the target lane and then returns to the right direction to continue driving. The whole process is simple and neat, not slow at all. Moreover, the angle and intensity of steering wheel adjustment, the timing of correction and the intensity and timing of throttle coordination are very accurate, comparable to the level of old drivers.

If there is a car behind the target lane when the turn signal is turned slightly, or the road marking is solid, the system will not execute the lane change instruction. If the vehicle behind the target lane accelerates when changing lanes, the system will stop changing lanes and the vehicle will drive back to the original lane to continue driving.

The vehicle is also equipped with a capacitive sensing steering wheel. Capacitive sensing technology replaces the traditional physical torque sensing steering wheel, which can accurately detect the driver's control status of the steering wheel.

BMW? IX3 also has a function of "Tracking Parking Assist", which is very easy to use. Suitable for similar scenes where the vehicle can't turn around and can only be poured out after entering a dead end.

In this case, just put in reverse gear, check the "Parking Assist" option on the central control panel, then release your hands and control the brake pedal under your feet, and the vehicle will turn in the opposite direction according to the recorded steering wheel angle within the last 50 meters, thus controlling the vehicle to return to the original road.

In the actual experience, even complex curves can be freely entered and exited, that is, as long as they can come in, they can go out. But only if the speed is controlled. If the speed is too fast, this function will automatically quit.

Summary:

BMW? IX3 has been officially listed at Guangzhou International Auto Show in 2020, and the price of leading and leading models is 469,900 yuan and 509,900 yuan respectively. Its price refers to the price of fuel version X3. At present, xDrive's top model fuel version X3? The leading model of 30i is priced at 479,800 yuan. The price of iX3 high edition is only 30,000 higher than that of IX3 low edition 1 10,000.

We think this pricing strategy is pragmatic. Considering that the pricing strategy of BMW's other new energy vehicle, 530Le, has a pulling effect on sales, what do you expect from BMW? IX3 can also reap considerable sales.

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