At the recent 2022 Changan Automobile Global Partner Conference, Changan officially released a new digital pure electric brand - Changan Deep Blue, a week later, held on the 21st "Foresee Deep Blue First reach the future" Changan Deep Blue Technology In-depth Interpretation Exchange Meeting, for us to comprehensively analyze the deep blue brand of the fast step of the technical core, to be honest, this technology sharing meeting, indeed shocked to talk about the car Jun, to sum up: to solve the current "pain points" of new energy vehicles, from Changan Deep Blue can glimpse the future of China's new energy vehicles.
At the same time, through the release of the technical analysis of the first hydrogen fuel cell sedan Navy C385 of the Chinese brand, we learned the strength of the EPA1 platform, which is the world's first all-electric platform compatible with pure electricity, extended range, hydrogen fuel and other power configurations. Interested in looking down, talking about chejun to take you to quickly smooth out the "dry goods"
First look at the product Changan deep blue C385 strength is strong!
C385 as the first model of Changan Deep Blue, can be said to be the leading technology of Changan Deep Blue, first of all, the pure electric version, the extended range version, the hydrogen fuel cell version of the three power in one car, let the car jun who has been engaged in the car for 13 years feel surprised, deeply feel the strength of Changan deep blue technology. The hydrogen fuel power created before the times has made C385 a new value standard for market segments and even the entire automotive industry, not only providing consumers with a new choice space. It has also created a new outlet for the development of new energy vehicles.
In terms of design, seeing Changan Deep Blue C385 at first glance still faintly can see the new family design elements of the Changan system, the minimalist design highlights the overall sense of the vehicle at the same time, through the outline of the line to create a sense of science and technology and digital belonging to the future. Concealed door handles, frameless windows, and sneaky back design, forward swooping visual perception, as low as 0.23Cd drag coefficient, all this is the style of a coupe.
In terms of detail, the large sports front shovel reduces the visual center of gravity while pairing with 19-inch sport wheels, and the tail vertical "tail fin" highlights the perfect combination of aesthetics and performance. Of course, the wide through-type taillights can definitely have a high degree of recognition under the illumination and shadow at night.
The body size of 4820*1890*1480mm also makes Changan Navy C385 wider and lower, while the 2900mm wheelbase almost reaches the level of C-class cars, which can ensure a comfortable driving space in the car.
In terms of performance, under CLTC working conditions, the C385 pure electric version with endurance-based version has a comprehensive working range of more than 700 kilometers, the performance-based version has a maximum power of more than 190 kilowatts, and the power consumption is as low as 12.3 kWh/100 km or less.
The mileage of the extended range full fuel full power under clTC comprehensive conditions can reach more than 1200 km, the cruising range of simple electric comprehensive working conditions can reach more than 200 km, and the fuel consumption of feeder is as low as 4.5 liters/100 km or less.
As China's first mass-produced hydrogen fuel cell car, the C385 hydrogen-electric version of the comprehensive CLTC standard under the working mileage can reach more than 700 kilometers, and the feed hydrogen consumption is as low as 0.65 kg/100km or less, which can achieve 3 minutes of ultra-fast energy replenishment.
Solve the new energy "pain point" How strong is Changan deep blue technology!
When it comes to solving the current "pain points" of new energy vehicles, it must start from the foundation, so from 2017, Changan launched the research and development of the EPA1 platform, which lasted five years to temper and build. The all-electric digital platform EPA1 is officially launched. According to Deng Chenghao, general manager of Changan New Energy,
The EPA1 platform takes into account the future travel prospects and today's car experience of the full track pure electric drive dedicated platform, with four high attributes: high efficiency; later drive as a gene, taking into account the high performance of four-wheel drive; high intelligence based on the domain-controlled electronic and electrical architecture; and high security of three-layer protection of the core car cloud.
High efficiency: the ultimate powertrain drive electrical efficiency
First of all, as an electric drive, reducing the energy consumption of the whole vehicle can ensure a longer cruising range, then if you want to reduce energy consumption, you must improve the electrical efficiency, at present, the mainstream electrical efficiency of the industry is about 70%-75%. Through a series of optimization measures, Changan New Energy can achieve an electrical efficiency of 78%, which is higher than the industry's optimal level.
At the same time, Chang'an's new generation of super-collector electric drive system innovatively adopts five core technologies: eight-layer flat wire winding, rotor double-V topology configuration, ultra-low resistance wire, adaptive control algorithm, and low resistance topology optimization. In the end, the highest efficiency of Chang'an's new generation of super collector electric drive exceeds 95%.
Of course, in terms of improving the difficulties of electric vehicles in winter, Changan's new generation of super-collector electric drive equipped with self-developed high-frequency pulse heating technology can achieve extreme heating at ultra-low temperatures, and in the -30 °C environment, the battery heating speed can reach 4 °C / min, the low temperature dynamics are increased by more than 50%, and the low temperature charging performance is shortened by more than 15%, which greatly alleviates the experience of electric vehicles in extremely cold weather.
In the problem point that many people pay attention to, the range extender power model, the feeder driving energy consumption is higher and the noise is larger, Changan Deep Blue is the first in China to mass-produce the autonomous car range extension system. 1 L of oil can generate about 3.3 kWh of electricity. At the same time, using frequency conversion active control based on whistle, intelligent power balance control strategy, active vibration suppression of range extended range system and other technologies, the range extended range system on the EPA1 platform has completely realized global sensorless operation.
The Changan C385 hydrogen fuel version is equipped with the first mass-produced independent sedan hydrogen fuel cell system in China. The water-gas side stack design achieves a smaller volume and greater power. The intelligent perception algorithm of working condition mode and the gradient coating of a new generation of highly reactive platinum alloy catalysts achieve ultra-high power generation efficiency and ultra-long stack life. The power generation efficiency of the system can reach 1kg of hydrogen power generation of 20.5 degrees, and achieve 3 minutes of ultra-fast energy replenishment. It not only breaks through the technical barriers of hydrogen fuel, but also promotes the development of hydrogen fuel cell industry chain and accelerates the marketization process of hydrogen fuel cell vehicles.
High performance: The future drive is the gene, taking into account the ultimate performance platform of four-wheel drive
In the current new energy market, pure electric plus rear drive is still a scarce product attribute. The EPA1 platform is a platform that supports the expansion of dual motors and four-wheel drive with wheel drive as the gene. The maximum output of a single motor is 190 kW, and the first car C385 accelerates by 5.9 seconds per 100 km/h. At the same time, the EPA1 platform is the world's first all-electric platform compatible with pure electricity, extended range, hydrogen fuel and other power configurations.
EPA1 platform is equipped with the world's most advanced brake double redundancy system, in terms of braking style for users to choose comfortable and sports two modes, the system pressure is faster and stronger, the energy recovery effect is better, effectively shorten the braking distance, greatly improve the accuracy of the automatic emergency braking function, so that users can enjoy the joy of controlling and riding while having a safer braking guarantee.
At the same time, the EPA1 platform is equipped with an H-arm multi-link independent suspension system. The rear suspension followability, high-speed stability, riding comfort are greatly improved, the driving experience is more delicate, the counterweight architecture of the front and rear axles 50:50 balance, based on the extreme performance of the wide body design, low center of gravity platform design, to achieve the leading brake pitch control and body roll control capabilities, sensitive steering response and excellent following performance, thus giving the EPA1 platform excellent handling performance. Not only that, but the EPA1 platform is also industry-leading in power response and NVH performance. The moment you press down or release the accelerator pedal, the electric drive can be completely hysteresis-free, providing users with the ultimate driving experience. According to the actual measurements, the EPA1 platform powered the traditional system gap tapping sound (effectively avoiding the percussion sound of the transmission system under rapid acceleration/deceleration) pressure significantly ahead of the industry's top level.
High intelligence: Three domain control architectures, supporting SOA service expansion
At present, many models claim to have OTA upgrade functions, but when they are actually used, car owners often encounter many problems that are difficult to reconcile, such as high upgrade failure rate, long upgrade time, and the need for vehicles to be stationary during upgrades. The Changan Deep Blue EPA1 platform significantly optimizes the transmission bandwidth and processing speed of all aspects of the OTA, and the vehicle control software is optimized from the traditional OTA time of tens of minutes to less than three minutes.
At the same time, it can also implement dual-partition upgrade technology. The ability to instantaneously complete software updates without affecting the normal use of the owner can also avoid vehicle breakdowns caused by failed upgrades. In addition, it also supports a variety of OTA methods such as departure upgrades and appointment upgrades under the authorization of users, and truly achieves a commonly used and new vehicle experience.
The first intelligent vehicle domain controller "Changan Smart Core" + Qualcomm 8155 chip in China also makes the era of smart cars a perfect upgrade from software requirements to hardware support.
Of course, up to L4 level intelligent driving software and hardware support can be realized, which can easily realize parking and remote driving according to the memory path, truly solve the user's parking pain points, and achieve convenient travel.
High security: 3-layer security architecture of core car cloud, 360 degree security guarantee
Vehicles as an everyday means of transport, safety is naturally more important, EPA1 platform using five horizontal and nine longitudinal loop body design, more than 45% of the proportion of high-strength steel, to ensure that the platform meets the C-NCAP five-star safety standards, and provides a full range of peripheral security protection for the battery.
As a new energy intelligent model, battery safety and data security also need more attention, in terms of battery safety, Changan Deep Blue has developed iBC digital battery butler based on the EPA1 platform. Through the 2 types of digital pre-control management technology groups and 7 types of digital temperature control management technology groups, the battery thermal runaway can be effectively avoided.
In terms of information security, we have adopted a 5+1 network security and privacy protection strategy, that is, a five-layer defense-in-depth strategy, plus a complete set of privacy protection policies covering the car, cloud, and mobile terminals, to build a security barrier for user information.
Write at the end
After watching Changan Deep Blue's "Foresee deep blue first reach the future" technology sharing, Talking about Chejun has indeed benefited a lot, and there are many feelings, the first few years have been criticized in the field of new energy slow changan, in fact, is not slow, but in precipitation, in the special research, in technological innovation, in fact, they have been working hard, seriously, and now it seems that they have done very successfully, absorbed all the "pain points" of new energy models and given the right solution. Chang'an, which is thick and thin, can indeed look forward to the future! Changan Deep Blue will change the pattern of the new energy market in the future, we wait and see!