Summary:
In this issue, we will take you into GAC Aian to learn about the closely related technologies or products used by Aian.
In 2017, GAC New Energy was established and changed its name to GAC Aian New Energy Automobile Co., Ltd. in 2020; in 2022, GAC Aian's production and sales volume will jump to the third place in China, and its performance is relatively impressive; The sales volume in a single month exceeds 40,000, which is in full swing.
Ian has cut through the waves all the way, and has built the AION+Hyper matrix. In this issue of Smart Electric Interpretation, I will take you into GAC Ian to learn about the closely related technologies or products used by Ian.
A pure electric platform
1. In 2017, GAC New Energy launched GEP1.0 (GAC Electric Platform), a pure electric platform centered on "batteries";
2. With an investment of 3 billion, after 30 months, it will be upgraded to GEP2.0 with "battery + electric drive" as the core layout in 2019. Layer-wound hair-pin technology, high energy density cells, highly integrated module-less architecture, high-precision BMS control, high-capacity battery pack structure, etc. At present, Aian's models on sale are all based on AEP2.0.
3. In November 2022, Aion released AEP3.0, which will be the first to be installed on the Hyper GT pre-sold last month.
The core appeal of the AEP 3.0 platform is to pursue more extreme power performance and driving control performance. It adopts X-PIN flat cable and intelligent multi-mode shift technology to achieve a top speed of 300Kph, and the dual-motor version breaks 1.9s. Road-level rear-wheel drive driving control has contributed to the all-round evolution of safety performance, vehicle energy consumption, low-temperature battery life, and parts universal rate.
In addition, through the unique AICS intelligent chassis system, the handling performance of AEP3.0 has been greatly improved. According to a series of parameters such as wheel speed, rotation angle, throttle, yaw rate, etc. The adjustment of the frame stiffness realizes multi-system dynamic matching control, and finally achieves a turning radius as low as 5.3m (3m-level wheelbase), a 30% increase in steering accuracy and sensitivity, a 40% reduction in cornering roll, and a low braking distance per 100 kilometers. At 35 meters, the braking response time is shortened by 50% to 150ms and other leading advantages in the same level. AICS' unique eTCS electronic control system can adjust the driving force to avoid slippage by predicting the critical point of vehicle slippage. At the same time, combined with distributed traction control, the torque response speed can be increased by 20 times, and wheel slippage can be more effectively suppressed.
Two battery technology
1. Magazine technology: solve safety pain points
In March 2021, Aion released the magazine battery system safety technology 1.0, and the first model is AION Y.
The magazine battery brings together the four core technologies of ultra-high heat-resistant cells, super-insulated battery compartment, three-dimensional cooling system for extremely fast cooling, and full-time control of the fifth-generation battery management system. The entire package of ternary lithium batteries did not catch fire in the acupuncture test (the BYD acupuncture test used lithium iron phosphate blade batteries, and the single cell test was used).
In addition to the substantial improvement in safety performance, the magazine battery has also been fully optimized in terms of cooling system, battery design, and package layout. The energy density of the battery pack equipped with the safety technology of the magazine battery system is 9.4% higher than that of ordinary battery packs of the same type, the weight energy density is increased by 5.7%, and the cost is reduced by 10%.
At the same time, according to GAC Aian, the magazine battery, as an innovative system-level safety technology, can safely empower various types of batteries. It can not only provide assistance for the optimization of the current mainstream ternary lithium and lithium iron phosphate batteries, but also improve the safety performance of all batteries such as graphene-based super fast charging batteries and ultra-long battery life silicon anode batteries.
On March 30, 2023, Aian Magazine Battery went a step further and held a press conference for the Magazine Battery 2.0 shooting test. The first model should be the Hyper GT Haobo.
The whole pack of magazine batteries 2.0 did not catch fire or explode after being shot. After disassembling the battery system casing, the overall structure was intact, and only three batteries were burst damaged. After standing for 24 hours, the temperature returned to normal temperature. It is the first time in the world that the whole battery pack can be shot without fire, and it is the first time to solve the battery safety problems in extreme environments such as instantaneous short circuit and explosive damage of multiple cells.
On the basis of the original magazine battery, the magazine battery 2.0 relies on "ultra-stable electrode interface", "heat-resistant phase change material with dual functions of heat insulation and phase change heat absorption", "cell fire extinguishing system", "sixth A series of original safety technologies such as the "Generation Cloud Battery Management System" have increased the comprehensive thermal runaway management capability of the magazine 2.0 by 5 times, and can resist the impact of simultaneous thermal runaway of multiple batteries.
2. Sponge silicon negative plate battery technology: solve the pain point of battery life
In April 2021, the sponge silicon anode battery technology will be officially released, and the first model will be the Aion LX Plus.
In addition to positive electrode materials such as lithium, high nickel, and sodium, the negative electrode is gradually gaining attention in the industry. At present, the mainstream negative electrode material is graphite, and its theoretical capacity upper limit is 372mAh/g. At present, some products have reached 360-365mAh/g, which is close to the upper limit. Therefore, new materials with higher energy density are needed to meet the requirements of technological progress. Among them, the theoretical capacity 4200mAh/g silicon has become a popular choice.
According to the introduction of GAC Research Institute, the sponge silicon negative plate battery technology is a technology group involving the fields of battery positive and negative electrode materials, binders, pole piece design, and process manufacturing. The silicon negative electrode inside the battery is as soft and elastic as a sponge, which limits and buffers the expansion and contraction of silicon during charging and discharging without breaking, and allows the silicon negative electrode to store more energy like a sponge absorbs water.
With "nano-composite silicon technology", "self-repairing binder technology" and "gradient composite coating technology", the sponge silicon negative plate battery technology has greatly reduced the quality and volume of the battery. Under the same power condition, the power battery single cell can reduce the volume by 20%, reduce the weight by 14%, and the energy density of the battery cell can reach 280Wh/kg. In this way, it is possible to put more batteries, store more electricity, and charge more electricity under the same vehicle chassis with limited space. Therefore, the battery life of the pure electric model AION LX equipped with sponge silicon negative battery technology can reach 1000km (The official website does not specify whether it is NEDC or CLTC battery life).
However, silicon anodes have poor cycle performance and short lifespan. There is currently no information on how to overcome this weakness.
3. Graphene-based super fast charging battery technology: solve the pain point of charging time
In August 2021, GAC Aion released the super-speed battery technology and the A480 supercharger with the world's highest charging power. The first model is the Aion V model.
The super fast charging technology here must be based on graphene-based super fast charging batteries and GAC Aion's exclusive super fast charging column.
(1) Graphene-based super fast charging batteries are not real graphene batteries, but are based on graphene material. Graphene is used as a conductive additive on the positive electrode material, which greatly improves charging efficiency and heat dissipation performance, and has 6C fast charging Capability, combined with high-power overcharging equipment, can be charged to 80% in the fastest 8 minutes. In addition, the maximum operating voltage of the battery is as high as 880V, which is nearly double that of the 450V operating voltage platform of the mainstream battery.
(2) Matching the super-speed battery technology is the A480 super charging pile newly developed by GAC Aion. "A" stands for Aion, and "480" means that the maximum charging power of the charging pile can reach 480kW.
Lightweight liquid-cooled cables are used in the appearance design, which is convenient for car owners to charge and use. At the same time, the entire pile body adopts liquid cooling cooling technology to effectively control the temperature of the pile body during high-current charging. The peak voltage can reach 1000V and the maximum current can reach 500A.
As a comparison, the current mainstream fast charging piles on the market have powers of 60kW and 120kW, and some fast charging piles can reach 150kW and 180kW. The maximum charging power supported by the Tesla V3 supercharging pile is also 250kW. The maximum charging power of the A480 super charging pile can reach 480kW. 6C high-rate fast charging can realize 0%-80% charging time of 8 minutes, and 30%-80% charging time of 5 minutes.
4. Microcrystalline super-energy iron-lithium battery technology: alleviate the pain points of low-temperature battery life and fast charging
In June 2022, GAC Technology Ri Aian released its own microcrystalline super-energy iron-lithium battery technology.
As we all know, lithium iron phosphate batteries have outstanding advantages in terms of cost, safety, and lifespan. With the key breakthrough in battery pack technology, the loading volume of lithium iron phosphate batteries will be higher than that of Sanyuan for 18 consecutive months from July 2021. For lithium batteries, the cumulative installed capacity for the whole year of 2022 will be 183.8GWh, accounting for 68.36% of the total installed capacity, with a cumulative year-on-year increase of 130.2%. However, lithium iron phosphate battery materials still have pain points such as poor low-temperature performance, weak fast charging ability under high energy density design, range anxiety, and difficulty in increasing energy density. The promotion and application of lithium batteries in these areas.
On the basis of the traditional lithium iron phosphate chemical system, GAC has introduced a higher-capacity second-phase positive electrode microcrystalline active material. While increasing the energy density, it simultaneously improves the low-temperature-fast charge-life performance of the lithium iron battery. And greatly improved the accuracy of BMS management of iron-lithium battery. Compared with the current conventional lithium iron phosphate battery, the "super energy lithium iron battery" based on "microcrystalline super energy technology" achieves a 13.5% increase in mass energy density, a 20% increase in volumetric energy density, and a 10% increase in the low-temperature capacity retention at -20°C. %, and at the fast charging level, it can be charged to 80% in 25 minutes, and the charging time is 25% shorter than that of conventional iron-lithium batteries. direction.
Three- quark electric drive
In March this year, Aian released the quark electric drive technology, which is expected to be first used on the Hyper GT.
It is not easy to increase the power density of the motor. It is necessary to consider achieving greater power output while maintaining the same volume while avoiding high power output loss. Constrained by these two major problems, in the past 10 years, the industry average level of motor power density of electric vehicles has increased from 2kW/kg to 6kW/kg.
And Aian innovated and developed the basic raw material electromagnetic principle, designed the "nanocrystalline-amorphous" alloy material, created the stator configuration design of the X-PIN flat wire winding structure and the design of the carbon fiber high-speed rotor, adopted a 900V high-voltage platform system, carbonized The peak power of the silicon module reaches 320kw. The quark electric drive released this year realizes the compatibility of "large power and small volume", realizes a power density of 12kW/kg, and reduces the output loss of the motor by 50%.
Four intelligent
1. Protoss architecture
In 2021, Aian released X-Soul, an electronic and electrical architecture of Xingling, which includes 3 core computer groups: car digital image cloud and central computer, intelligent driving computer, and infotainment computer;
In November 2022, Aion released a new generation of high-end electronic and electrical architecture Protoss architecture. On the basis of EEA 3.0, through a number of world-leading technologies such as FY-3 infrared remote sensing technology, the second-generation intelligent zoom lidar, aerospace-grade satellite-based positioning fusion, etc., a comprehensive upgrade has been made for the safety of smart driving. The intelligent driving safety problem of trams provides a systematic solution, which is the first to be installed on the Hyper series models.
2. Pusai Operating System
How to implement software-defined cars? GAC launched Pusai OS based on Protoss architecture.
According to reports, Pusai OS is the core of the "future-oriented" GAC Protoss architecture, which can effectively improve software compatibility and reusability, and is expected to change the software iteration speed from the original monthly unit to the minute unit.
Pusai OS created a unified interface definition and core components, and developed SOA cross-domain service engine, high-performance middleware engine, car cloud image engine, heterogeneous execution scheduling engine, which can make the central computer, intelligent driving computer and infotainment Computers are organically integrated at the software level to improve the operational efficiency of the electrical and electronic architecture.
3. ADiGO, the smart driving interconnection ecosystem
Chinese: Eddie dog, A: artificial intelligence, digo: Spanish represents a promise. ADiGO is an intelligent driving interconnection ecosystem that is led by GAC, co-created by multiple strategic partners such as Tencent and Huawei, and independently developed. It integrates smart factories, automatic driving systems, and IoT systems. The ADiGO system includes an intelligent IoT system, an intelligent driving system, a cloud platform, and a big data platform.
In 2013, GAC began to lay out the automatic driving system;
In 2019, the ADiGO2.0 system will be installed on AIONS. In July of the same year, the ADiGO ecosystem was released, covering two functional sections: the ADiGO automatic driving system and the ADiGO intelligent IoT system.
In July 2020, Aion released ADiGO 3.0, which introduced a triple perception system of "high-precision map + high-precision radar + smart camera", and realized 5G interconnection, AR-HUD real-scene navigation, four-screen multi-mode interactive sharing with Qualcomm Snapdragon 8155 chip ;
In April 2021, on GAC Technology Day, the ADiGO 4.0 smart driving interconnection ecosystem was officially released, and it was first released on AION Y. In terms of intelligent IoT system, the new generation of intelligent operating system G-OS developed by GAC and iFLYTEK, a joint subsidiary of Galaxy Zhilian, is launched. It uses a 14.6-inch/15.6-inch screen and is equipped with NDA pilot driving assistance system to realize L2+ level intelligent assisted driving. . At the same time, the company cooperated with Tencent to take the lead in realizing WeChat on-boarding, and cooperated with Huawei to jointly develop L4 autonomous driving vehicles, which are planned to be mass-produced in 2024.
In June 2022, the newly upgraded ADiGO will be unveiled at GAC Technology Day:
- The ADiGO PILOT intelligent driving system is equipped with 39 high-performance sensors, including 3 intelligent variable-focus solid-state lidars, 6 8-megapixel high-definition cameras, and infrared cameras. It is also equipped with 8 redundant systems and a high-performance computing platform.
- The ADiGO SPACE intelligent cockpit system has been upgraded from the four dimensions of voice capability, sound effect experience, and ecological content-level scene solutions, achieving a wake-up-free coverage rate of 95%, and a wake-up time of less than 0.6 seconds. Brands such as Tencent, Himalaya, and Bilibili introduced head ecological content to enrich the cockpit experience.
In the era of smart electronics, traditional car companies are under greater pressure to expand their territories, and technological innovation is the core element of transformation and upgrading. "High-quality development should be led by leading technology." Adhering to this concept, Aian has gradually stabilized on the road of EV+ICV dual-channel self-development. The continuous monthly 40,000 units may be the best interpretation.
Author | Yi Ji Jue Chen