Solid-state battery + pure visual smart driving, new energy has evolved again?

Written by Xiao Budong

Editor｜Li Xinma

Pictures｜Photographed by DoNews

Solid-state batteries have increasingly become the focus of efforts in the field of new energy vehicles, and have been frequently used in the past two years New trends are reported.

At the end of 2023, Changan Automobile and Ganfeng Lithium jointly signed a "Memorandum of Cooperation", planning to accelerate the advancement of (semi-)solid-state battery research and development joint venture projects and manufacturing industrialization projects, based on the research and development of next-generation automotive power batteries (semi-)solid-state batteries cooperate.

In January this year, Quantum Landscape, a solid-state battery company listed on the US stock market, announced that the solid-state battery developed by the company has passed the 500,000-kilometer durability test of Volkswagen of Germany. The Volkswagen Group confirmed that the battery has completed 1,000 charging cycles after months of testing.

In the same month, Toyota announced that it had successfully overcome the bottleneck of solid-state batteries. The solid-state battery it released had achieved significant breakthroughs in energy density and charging speed. It can last 1,500 kilometers after charging for 10 minutes.

One stone has stirred up a thousand waves. Domestic car companies have also accelerated the layout of solid-state battery technology routes. It is reported that the solid-state battery currently being developed by Changan Automobile can have a weight energy density of 350-500 Wh/kg and a volume energy density of 750-1000. Watt-hour/liter, this battery is expected to be fully popular by 2030.

Not long ago, the 2024 GAC TECH DAY 2024 with the theme of "Technological Vision" was held at the GAC Research Institute. At this event, GAC announced the launch of a high-safety, large-capacity all-solid-state power battery that has achieved a breakthrough in key technologies, and plans to install it in vehicles in 2026.

What are the important breakthroughs in all-solid-state power batteries?

The reason why solid-state batteries are attracting more and more attention from new energy vehicle companies is because the safety of solid-state batteries has significant advantages over liquid batteries. The all-solid electrolyte of solid-state batteries is non-flammable, non-corrosive and non-volatile, and is more resistant to changes in the external environment.

In terms of safety, GAC’s all-solid-state power battery uses a high-strength dense composite electrolyte membrane, which prevents the battery from exploding during the 200°C hot box test, setting a new level of safety for high-specific energy batteries.

In addition, the battery maintains stable performance when tested under extreme conditions such as acupuncture, cutting, dry ice environment at minus 78°C, and high temperature hot water immersion at 90°C, and does not occur under mechanical abuse conditions such as nailing and cutting. Thermal runaway significantly improves car safety.

Photo source of GAC all-solid-state power battery model display: GAC Technology Day

Technically, it uses high-area capacity solid-state cathode technology and third-generation sponge silicon negative electrode technology (new nano-silicon composite negative electrode), all-solid-state The positive electrode can reach a high surface capacity of more than 5mAh/c㎡, thereby achieving an energy density of more than 400Wh/kg.

Compared with the current most advanced liquid lithium-ion battery, its volumetric energy density and mass energy density are increased by more than 50%, allowing the vehicle's cruising range to exceed 1,000km.

In terms of battery cell capacity, GAC All-Solid-State Power Battery has successfully established the full-process manufacturing process of all-solid-state power batteries by trying more than a hundred material solutions and process solutions, and achieved the manufacturing of large-size multi-layer stacked all-solid-state battery cells. , its capacity is as high as 30Ah, far exceeding the current industry's highest level (10Ah-15Ah).

Currently, GAC Group has initially opened up the full-process manufacturing process of all-solid-state batteries, and has achieved key technological breakthroughs in the mass production of automotive-grade high-safety and large-capacity all-solid-state power batteries, which have ultra-high energy density, ultra-high safety and large capacity. The three core advantages of all-solid-state batteries are expected to be installed on Haopin models in 2026.

Picture source: GAC Technology Day

Full scene picture-free pure visual intelligent driving system

The new main battlefield of new energy vehicles is indispensable for intelligent driving technology, especially autonomous driving, which has become the focus of competition.

In this industry, Tesla is the current global leader. As early as Tesla's "Autonomy Day" in 2019, Tesla CEO Musk once fired at lidar companies; "Anyone using lidar is doomed to fail." Immediately afterwards, Tesla officially released a fully autonomous driving computer .

Although it once introduced a 4D millimeter wave radar solution, since last year, Tesla has focused on the FSD system and returned to the path of purely visual autonomous driving. However, in the Chinese market, FSD has not yet been realized.

The choice of industry leaders has opened up a new path for domestic car companies. Now we can see that Tesla’s challengers to autonomous driving are competing to enter the market.

On April 11, Zhijie S7 was unveiled at the Huawei Hongmeng Eco Spring Communication Conference. The Zhijie S7, the first intelligent model jointly launched by Huawei and Chery, is “on the market for the second time”, bringing new upgrades. At the same time, Huawei has launched the basic version of Huawei Vision Smart Driving HUAWEI ADS to the market for the first time, which can realize quick and easy driving in highway cities across the country and easy parking with smart parking.

The next day, GAC Technology also released a picture-free pure visual intelligent driving system, which can be applied to complex and changeable scenarios without the need for high-precision maps or lidar. It combines visual sensors and the industry's top AI algorithms. , a simpler hardware system can be used to achieve wider coverage of intelligent driving.

In terms of visual recognition, the Wutu Pure Vision Intelligent Driving System has three leading capabilities:

The ability to understand complex traffic roads extremely accurately, regardless of ramps, tunnels, curves or intersections, it can accurately identify and understand the road structure. Super traffic light recognition ability, through deep neural network, achieves accurate identification of various signal light elements. The ability to handle complex and changeable scenes, the sensing range reaches 150+ meters in front of the car, 100 meters behind the car, and 50 meters left and right, which is 1.5 times the industry level

With the first liquid space-time joint planning technology, it can detect dynamic traffic objects through With real-time tracking, intent recognition and trajectory prediction, as well as a data-driven command brain that collaborates with expert rules, this system can accurately predict the behavior of other traffic participants and quickly make reasonable decisions. Even when parking in difficult three-dimensional parking spaces or narrow parking spaces, the minimum error can be controlled within 5cm.

It is worth noting that in the field of autonomous driving technology, GAC not only focuses on the mainstream "multi-sensor fusion technology", but also proactively explores the two major technical paths of "image-free pure visual technology". Both technical routes will reduce reliance on high-precision maps.

The current coverage of high-precision maps is only about 6% of the country’s highway mileage, which means that on about 94% of the country’s highway sections, autonomous driving technology that relies on high-precision maps is difficult to implement. Both of the two technical routes taken by GAC have the flexibility to "drive with navigation".

Building a data closed loop is a key cornerstone for the continuous evolution of autonomous driving technology. To this end, the Group has begun to build the GAC Cloud Data Center and the GAC Network Big Data Platform. By building these core facilities, it will provide a powerful platform for the development of autonomous driving technology. data support.

At the same time, through Ruqi Mobility, GAC Group has launched a comprehensive autonomous driving data solution, including the data annotation platform ONTIME Data Encoder, the high-precision map tool chain ONTIME MapNet, and the smart driving simulation platform ONTIME NexSim.

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Picture source: GAC Technology Day

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Automobile revolution in progress

At the GAC Technology Day, the most eye-catching cars were several display cars, including electromagnetic suspension, MBoard2.0 Core Intelligent Chassis and flying cars.

The flying car GOVE is particularly eye-catching. It has achieved its first global flight at the 2023 GAC Technology Day, and conducted a flight demonstration over Guangzhou CBD in March this year, completing flight verification in the urban public complex low-altitude environment for the first time.

Photo source: Photographed by DoNews

The Trumpchi New Energy E9 Welfare Vehicle, which is deeply customized and developed for users with limited mobility, is also on display. The unique feature is that it is equipped with the world's first detachable electric welfare seat. The chair can be easily separated from the mechanism after landing, turning into an electric mobile wheelchair with a range of 26 kilometers and a maximum load-bearing capacity of 120 kilograms.

Photo source: Photographed by DoNews

Qiji Automobile, the new light business segment of Guangzhou Automobile Group, also made its official debut. Among them, the eye-catching MLounge first-class model has intelligent driving capabilities from L2 to L4 and is planned to be put into mass production this year.

Picture source: GAC Technology Day

At the same time, MBoard2.0 Xinzhi chassis relies on advanced "software-defined chassis technology" to achieve an innovative design of cabin-driving separation, aiming to explore more for human beings. Provide strong support for a beautiful mobile lifestyle.

End

Previously, GAC Trumpchi launched the Trumpchi M8 Grandmaster Pioneer Edition in cooperation with Huawei and joined the Huawei Hongmeng ecosystem. GAC Trumpchi realizes one-time APP development and multi-terminal deployment, and quickly implements multi-terminal layout such as mobile phones and watches to accelerate digital transformation.

Public information shows that the cooperation between GAC Group and Huawei began in 2017, and it is one of the first domestic car companies to cooperate with Huawei. As two giants in the domestic new energy field, their strong alliance may bring more exciting products.

What kind of cooperation will the two parties carry out? The answer may be officially announced at the Beijing Auto Show, let us wait and see.

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