＂All-solid-state battery＂+＂Picture-free pure visual intelligent driving＂, is GAC leading again？

China Economic News Network (Xing Rui)On April 12th, Guangzhou Automobile Group held 2024 Guangzhou Automobile Science and Technology Day to show the public the latest achievements in the field of scientific and technological innovation. Among them, two achievements are the most striking: one is the automatic driving technology without high-precision maps, which is more human-like, and the other is the more efficient and safer all-solid-state battery technology.

"In the past Science and Technology Day, we released a series of leading technologies, such as ADiGO Intelligent Driving Interconnected Ecosystem, GPMA Vehicle Architecture, GEP Pure Electric Platform, Super Fast Rechargeable Battery, Hydrogen Fuel Cell Vehicle and Hydrogen Hybrid Vehicle, and even Flying Vehicle, most of which have been applied in mass production." Feng Xingya, General Manager of Guangzhou Automobile GroupTaking the lead in introducing the topic with "magazine battery", he said that the high-safety "magazine battery" has served about 800,000 users and achieved zero spontaneous combustion of nearly 48 billion kilometers. He turned his head. "Today, the ultra-high safety and large-capacity all-solid-state battery technology we brought has gone further. Compared with the most advanced liquid lithium-ion batteries and semi-solid-state batteries, it has achieved a revolutionary improvement in battery safety."

In terms of the technical breakthrough of "all-solid-state battery", Li Jin, head of the research and development department of Guangzhou Automobile Ai ‘an battery, gave a detailed introduction. Guangzhou Automobile Group has initially opened up the whole process manufacturing process of all-solid-state battery, and achieved the key technical breakthrough in mass production of all-solid-state power battery with high safety and large capacity.

The first is ultra-high energy density. Guangzhou automobile all-solid-state power battery adopts high surface capacity solid-state anode technology and the third generation sponge silicon anode technology, and the all-solid-state anode can reach 5mAh/cm?Above the high surface capacity, and then realize the energy density of more than 400Wh/kg. Compared with the current advanced liquid lithium-ion battery, its volume energy density and mass energy density are increased by more than 50%, and the cruising range of the whole vehicle can exceed 1000km.

Followed by ultra-high security. Guangzhou Automobile All-solid-state Power Battery adopts high-strength and compact composite electrolyte membrane, which makes the battery not explode in the hot box test at 200°C, and refreshes the new safety height of high specific energy battery. In addition, the battery keeps stable performance under extreme conditions such as needling, cutting, dry ice environment at minus 78°C, high temperature hot water immersion at 90°C, and thermal runaway does not occur under mechanical abuse conditions such as nailing and cutting, which significantly improves the safety of automobiles.

Once again, it is a large battery capacity. Guangzhou Automobile All-solid-state Power Battery has successfully established the whole process manufacturing technology of all-solid-state power battery by trying more than 100 kinds of material schemes and process schemes, and realized the manufacturing of large-size multi-layer stacked all-solid-state batteries, with a capacity as high as 30Ah, far exceeding the highest level in the current industry (10Ah-15Ah), laying a foundation for the application of all-solid-state power batteries of vehicle specifications.

"The main battlefield of the new round of science and technology competition in the automobile industry is intelligent networked new energy vehicles, and intelligence, especially autonomous driving, has become the focus of competition." Feng Xingya said that in the field of autonomous driving technology, GAC has also laid out two major technical routes: mainstream "multi-sensor fusion technology" and forward-looking "map-free pure vision technology".

At present, the coverage rate of high-precision maps only accounts for about 6% of the national highway mileage, which means that autonomous driving based on high-precision maps cannot be used in about 94% of the national highway sections. Feng Xingya said, "Both routes of Guangzhou Automobile will get rid of the dependence on high-precision maps, and our goal is ‘ Where there is a road, there is a GAC smart car ’ 。”

Another focus of this science and technology day is "no map, pure vision and intelligent driving". According to Chen Xuewen, chief scientist of artificial intelligence in Guangzhou Automobile Research Institute, the intelligent driving system has three leading abilities in visual recognition: first, the ability to understand complex traffic roads extremely accurately; Second, the super traffic signal recognition ability; The third is the ability to deal with complex and changeable scenes.He said that GAC’s map-free pure visual intelligent driving system has completely got rid of the shackles of high-precision maps, and no longer relies on lidar. With a simpler hardware system, complex and changeable full-scene automatic driving can be realized.

So far,Guangzhou Automobile Group in the field of intelligent drivingIt has many advanced intelligent driving technologies, including super parking that can complete parking in extreme space, one-button calling and driving, and cross-floor driving with large curvature gradient, as well as high-speed NDA, urban NDA, traffic jam pilot TJP, etc. In the unmanned field, it has realized the demonstration operation of Robotaxi.In addition, Guangzhou Automobile Group also demonstrated a number of advanced technologies and humanized products, including electromagnetic suspension, MBoard2.0 core intelligent chassis and flying cars, as well as Chuanqi new energy E9 well-being vehicle deeply customized and developed for users with mobility difficulties.

Guangzhou Automobile Group also released the innovation achievements in 2023. In 2023, GAC invested nearly 8.4 billion yuan in independent research and development, and nearly 3,200 new patent applications were filed, of which invention patents accounted for about 50%. Up to now, the cumulative investment in independent research and development has exceeded 45 billion yuan over the years, and about 18,600 patents have been applied, of which invention patents account for 41%.