The advantages of Autron platform can be roughly summarized as three points-security &; Intelligence and performance
Meet the highest safety standards of ASIL-D system safety.
At any time, safety is always the top priority of new energy vehicles. Autoenergy platform realizes the highest level of system safety of ASIL-D. Maybe you are not familiar with this ASIL-D. This standard comes from the functional safety standard of road vehicles issued by ISO 2626211. One of the steps is hazard analysis and risk assessment of the system. The standard is "ASIL", which is divided into four grades: A, B, C and D from low to high, which is contrary to the performance rating of schools and companies. ASIL-D is the highest level of vehicle safety.
1) development and testing far beyond the national standard: the development and testing of the battery of the Autoenergy platform strictly follows the relevant global standards of new energy vehicles, and the testing conditions are far higher than the national standards of new energy vehicles in China. For example, in the battery selection stage, the DCR (direct current internal resistance) of 100% battery was tested, and the cumulative testing time exceeded 3.2 million hours. The national standard for battery drop test requires 1m height, and otters can be 2m high; The national standard of extrusion test is 100kN, and Otto can use 300kN. The national standard of acupuncture test requires the battery pack temperature > 0℃ and SOC > 95%, but Aote can achieve the temperature > 45℃ and SOC > 97%. Other tests have also adopted high standards, such as the battery pack vibration test duration is nearly three times that of the national standard, the salt spray test duration is more than 20 times that of the national standard, and the battery cell temperature and humidity cycle times are more than 90 times that of the national standard.
2) Exclusive battery formula: Unlike other car companies whose batteries are directly provided by suppliers, GM is deeply involved in the design of battery chemical system and performance research and development at the battery design stage. The batteries used in the Autoenergy platform are based on GM's global uniform safety and performance standards, and the exclusive optimized formula developed by local suppliers on the basis of 8 1 1 NCM has the characteristics of high thermal stability, low attenuation and long service life. According to the official introduction, the thermal stability of the exclusive battery is improved by 10% compared with the basic formula.
3) Thermal management technology of seven-cell battery:
(1) Insulation wall between batteries (patented design): Nano-scale aerospace material aerogel with thickened design can effectively reduce heat transfer between batteries.
(2) Thermal diffusion suppression technology (patented design): The unique design of "safety valve+quick exhaust passage" can quickly cool down when the battery is out of control and suppress thermal diffusion, that is, reduce the possibility of "chain reaction".
(3) Integrated liquid cooling system (patented design): An independent liquid cooling plate is integrated at the bottom of the module. Compared with the traditional integrated liquid cooling plate design, the heat transfer effect of the new system is improved by about 10%, and the overall battery life is also improved by about 15%.
(4) Fire protection design of module and vehicle (patented): the patented fire protection design of the upper cover, and the aerogel fire blanket is built into the battery cover to further protect the occupants and the vehicle.
(5) Rear-mounted large-area explosion-proof valve: combined with the quick exhaust passage of the module and the whole machine package, once the heat is out of control, it can quickly exhaust high-temperature gas and quickly dissipate heat.
(6) Arc prevention: The high-voltage components in the battery pack are designed to prevent electric arc (gas discharge) after the thermal control of the battery core is out of control.
(7) "Vehicle-cloud" real-time intelligent monitoring system: the vehicle-mounted terminal adopts triple sensors of air pressure/temperature/voltage to monitor the state of the battery pack and battery at high frequency for 24 hours. Once the risk of out-of-control is detected, it will take the initiative to take rapid cooling to control heat diffusion to ensure safety; Based on the data of the whole life cycle of the battery, the cloud data platform can identify the hidden dangers of thermal runaway of the battery in advance, such as lithium precipitation, internal short circuit, expansion and liquid leakage. , and provide weekly battery health abnormal warning, so as to prevent problems before they happen and bring more active and intelligent battery health risk management.
4) Strengthening the brand-new battery physical protection frame: Alton platform adopts a new generation of high-strength battery protection frame with herringbone structure, with ultra-high-strength steel accounting for 37.5% and high-strength steel accounting for about 665,438+0%. The extrusion resistance of the whole package is three times that required by the national standard. In addition, it also has the sealing grade of IP67 dustproof and waterproof and IP6K9K high-pressure water spray protection. After the collision, the active discharge can be completed within 5 seconds to ensure the rescue safety after the accident. In addition, the rigid battery case improves the torsional stiffness of the whole vehicle by about 45.8%, and the torsional stiffness of the whole vehicle with battery pack is 35kNm, which not only improves the safety of the whole vehicle, but also improves the handling limit.
The "Intelligent" Advantage of Otneng Platform
Wireless battery management system (wBMS): Compared with other pure electric platforms of automobile enterprises, the biggest difference of the Autoenergy platform is the wireless battery management system (wBMS) pioneered in the industry, which can reduce 90% of the wiring harnesses in the battery pack and a large number of connectors and connectors at the same time, thus greatly reducing the risks brought by the aging of traditional wiring harnesses. Users can greatly reduce the failure rate, thus improving the quality and life of system operation; At the production end, the battery assembly process is also simplified, thus improving the production quality and efficiency of the whole package and reducing the difficulty of module replacement in after-sales maintenance.
Intelligent monitoring system of battery health combining the two ends of "vehicle-cloud": Based on wBMS system, communication and monitoring of battery modules become easier, and real-time thermal runaway monitoring at vehicle end integrates triple sensors of air pressure/temperature/voltage to ensure no false alarm; High-frequency 24-hour monitoring of the state of battery packs and batteries. Once the risk of out-of-control is detected, the battery management module will take the initiative to wake up and automatically take rapid cooling at the first time to ensure the safety of the battery pack. Based on the battery life cycle data, the cloud data platform constructs a battery health assessment model through AI fusion of various mechanism features. After massive data training, multi-dimensional comprehensive evaluation of battery health, nip in the bud, and bring more active and intelligent battery risk prevention management.
BEV HEAT efficient integrated thermal management system: The Autoenergy platform model is equipped with a newly developed Bev heat (Harmonized Enhanced Advanced Thermal System) efficient integrated thermal management system, which can integrate three thermal systems of air conditioner, battery and electric drive for vehicle thermal management, with wide applicable temperature range and high efficiency. Batteries can be used to store heat, refrigerants can directly exchange heat with air, and hot air or cold air can be quickly discharged from the cockpit to cool down. In addition, the intelligent thermal management software strategy can reasonably allocate energy between the battery and the passenger compartment according to the actual temperature of the battery, the ambient temperature and the air conditioning requirements of the passenger compartment, so as to achieve the optimal solution among cabin comfort, driving quality, energy consumption, battery life and battery safety.
The "Performance" Advantage of Otneng Platform
The Otneng electric vehicle platform has excellent performance architecture. The performance here is not single-finger drive, but also architecture compatibility and expansibility. Its comprehensive and balanced performance can empower different types of electrical products and meet the diversified and personalized needs of consumers.
Efficient modular drive system: At present, Autoenergy platform brings us three highly modular motors: front motor, rear motor and rear drive auxiliary motor, which support four forms: front drive, rear drive, economical four-wheel drive and performance four-wheel drive. Cadillac LYRIQ Riggs adopts a three-in-one 1 rear drive unit with a peak power of 255kw and a peak torque of 440n·m, and the maximum drive motor system efficiency can reach 96%.
Compared with other electric drive systems, the leading position of Autoenergy electric drive technology lies in using flat wire winding to improve the peak value and continuous performance of the motor, and using self-adhesive iron core to improve the efficiency and NVH level of the motor. In addition, all motors and gearboxes of the electric drive device of Ultrapower platform are oil-cooled. Compared with the common water-cooling forms in the industry, the motor is cooled by stator spraying combined with rotor oil throwing, without designing a cooling water jacket, and the external diameter is smaller, which can bring greater volume power density and improve the overall efficiency of the system.
Flexible platform architecture and battery scheme: The flexibility of the Autoenergy platform lies in supporting a variety of battery and electric drive combination schemes, satisfying products with different cruising range, different drive forms and different performances, and covering various modeling requirements of cars, SUVs, MPVs and pickup trucks with different wheelbase and sizes.
On the battery level, the platform can support different battery packaging forms, different arrangement forms and flexible chemical formulas. At present, in the early stage of China market, two kinds of batteries with different electric quantities will be used, which can be connected in series or in parallel to form two kinds of module units with different electric quantities. Both lithium ferrous phosphate and ternary lithium batteries, as well as lithium metal batteries and solid-state batteries that may be applied in the future, can be used.
At the battery pack level, at present, China market will adopt three combinations of 8 modules, 10 module and 12 module in the initial stage. The module units have the same size, and the width and height of the battery pack are fixed and the length is flexible. The increase or decrease of modules can meet the needs of different sizes and different cruising ranges. Moreover, the interfaces of all parts of the battery pack are 100%***, and the utilization rate of parts is as high as 80%.
Development and testing of charging system: charging is an important part of electric vehicles, and the convenience and stability of charging third-party charging piles will affect users' interest and experience. An important reason for Tesla's recognition is that its own charging piles are widely distributed and its charging technology is leading. Therefore, Pan Asia is also conducting research on electric vehicle charging, and charging piles with poor stability can be more inclusive. At the same time, the operator brand with market share of TOP 10 is tested for charging integration, so as to achieve full coverage of mainstream charging pile brands.
Editor's summary: As early as 19 12, the electric vehicles manufactured by General Motors once dominated the market, and their share once exceeded that of fuel vehicles and steam vehicles in the same period. 2 1 century, the most important technology of SAIC-GM's electrification strategy is Ultium Autoenergy platform, which integrates GM's 26 years of electrification experience. Judging from the strength of the first model LYRIQ, this platform has great potential. Compared with Volkswagen's MEB and Mercedes-Benz's EVA, the Autoenergy platform is more inclusive, which is exactly the quality needed in the era of rapid technological change. It is reported that by 2025, GM will launch no less than 30 pure electric vehicles, most of which will be built on the "Autoenergy" platform. Let's look forward to it. ?
Finally, according to the data of Easy Car App, Cadillac LYRIQ ranks 14 among joint venture new energy vehicles. For more information, please check the Easy Car App.