On April 21, Changan Deep Blue, a new energy vehicle brand under Changan Automobile, held a technology sharing meeting with the theme of "Foreseeing Deep Blue and Reaching the Future", at which the brand's first model, The Changan Deep Blue C385, was officially released. C385 is based on Changan Automobile's self-developed all-electric digital platform EPA1, in addition to the common pure electricity, range extender two new energy fuel supply methods, this model also launched a hydrogen fuel cell version of the model, which is also the first mass-produced hydrogen electric model in mainland China.
Yang Dayong, vice president of Changan Automobile, introduced at the sharing meeting that Changan Deep Blue, as an important achievement of Changan Automobile's intelligent and new energy strategy, will provide the four major values of innovative reconstruction, interconnection of all things, experience and low-carbon life for new energy users of generation Z, so that consumers can experience a more novel, more digital, more intelligent and low-carbon and environmentally friendly car lifestyle. Deng Chenghao, general manager of Changan New Energy, introduced in detail the EPA1 platform that is driven into the gene and takes into account the extreme performance of four-wheel drive.
EPA1 platform
A collection of Shangri-La and Beidou Tianshu
In the implementation of the Shangri-La plan, Changan Automobile is determined to make a new pure electric drive dedicated platform with completely independent intellectual property rights. After five years of polishing, the EPA1 platform, which can extend a series of pure electric drive special products, and can provide users with the highest quality new energy experience and completely improve consumers' inherent impression of new energy vehicles, is also the world's first all-electric platform compatible with pure electricity, extended range, hydrogen fuel and other power configurations.
In the exploration, the R&D team dug deep into the needs of users for travel life, emphasized the solution of the three major pain points of new energy vehicle endurance, energy replenishment and safety, and clarified the efficient environmental protection needs of consumers in the process of using electric vehicles, the demand for digital technology and experience aesthetics, and the demand for extreme performance such as power performance, NVH performance and control performance, and identified these three needs as the three cool points of consumers.
In order to better achieve "high efficiency", Changan Automobile first proposed the concept of electric efficiency of the power system, referred to as electrical efficiency. The electrical efficiency reflects the comprehensive driving efficiency of the new energy power system, and reflects the energy efficiency level of the comprehensive drive of the power system that the user can intuitively feel. 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.
In addition, the new generation of super-collector electric drive used in the EPA1 platform has 163 patents, the efficiency of the electric drive can reach up to 95%, the world's first micro-core high-frequency pulse heating technology, with random frequency conversion IGBT opening and closing control, cell safety level commanded control, high frequency pulse and NVH balance algorithm, power system durability design and other more than 50 patents. This technology can help the battery in the -30 °C environment to achieve a battery temperature rise of 4 °C/min, improve the power by 50%, and reduce the charging time by 15%.
The EPA1 model will adopt an H-arm multi-link independent suspension system, and rear-wheel drive, with the latest generation of brake dual redundancy system, rear suspension following, high-speed stability, and ride comfort will also be improved. The process of driving performance tuning emphasizes the dynamic response and puts forward higher requirements for NVH.
The EPA1 platform strives to give users a better intelligent experience, achieves a global speed OTA upgrade, and is equipped with the first intelligent vehicle domain controller in China - Changan Smart Core. The smart cockpit domain controller uses Qualcomm 8155 chips with 105k DMIPs hash rate and can work together with multiple processors. The platform's intelligent driving domain controller can support up to L4 intelligent driving needs, with a multi-core design and up to 27 sensing components.
In terms of safety, the EPA1 platform emphasizes three aspects: body safety, data security and battery safety. Five horizontal and nine longitudinal surround body, high-strength steel accounted for 45%; 5+1 information security level privacy protection, involving IT defense technology, identity authentication and other aspects; iBC digital battery butler can realize wire + digital process control, car + cloud BMS double-flush monitoring, in the digital temperature control management also adopts aerospace-level battery insulation technology.
Changan Navy C385
Large space and high performance
The C385 not only has an all-electric digital platform, but also has leading parameters. It has the class-leading 4820mm × 1890mm×1480mm of length, width and height, wheelbase of 2900mm; wind resistance coefficient as low as 0.23Cd, reaching the industry-leading level; the whole series adopts rear-wheel drive, equipped with rear H-arm type multi-link independent suspension system.
Under CLTC conditions, the C385 pure electric version of the comprehensive working conditions of the cruising range of more than 700km, the maximum power of more than 190kW, the power consumption as low as 12.3kWh/100km or less; the extended range of full oil full of electricity comprehensive working conditions can reach more than 1200km, the simple electric comprehensive working conditions of the cruising range of more than 200km, the fuel consumption of feeders as low as 4.5L/100km or less; the hydrogen version of the comprehensive working conditions of the cruising range of more than 700km, The feed hydrogen consumption is as low as 0.65kg/100km or less, which can achieve 3min ultra-fast energy replenishment. This will be China's first mass-produced hydrogen fuel cell sedan.
On top of the core performance, the C385 also has a series of eye-catching configurations, such as a 14.6-inch sunflower screen that can be intelligently steered, an electric hatchback door, the largest 19-inch wheel hub in its class, frameless doors, hidden door handles and so on. Of course, the highlights of the C385 are far more than that, it will be equipped with the first time in the top 100 industries or the leading intelligent technology technology and configuration of the same level.
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