On the eve of China, Tesla held "Battery Day" on the other side of the ocean, and its CEO Musk showed the world his latest battery-related technologies, such as electrodeless batteries, battery materials, manufacturing processes and products. However, the relatively lagging launch time once put Tesla's share price on a roller coaster, which also shows that the world is full of expectations for the breakthrough of the underlying technology of automobiles.
Looking back at the auto show, in the face of the rapid development of the industry and the continuous improvement of consumers' requirements for intelligence and electrification, many manufacturers regard their latest technology products as an important part of the exhibition. For example, the vast intelligent evolutionary experience architecture of Geely Sea (sustainable? Experience? Architecture) Intelligent electric vehicle solutions, high-performance dual-speed dual-motor "four-in-one" integrated electric drive of GAC New Energy, and Bosch's silicon carbide power devices. All reveal the market's enthusiasm for innovative technologies.
Tesla: Goal-oriented Technological Breakthrough
The reporter once visited the Tesla factory in Shanghai. The vertical and three-dimensional production line flow, the supply of container parts for storage and the simple workers' rest area all reflect a clear factory function. Obviously, this is a goal-oriented enterprise.
Source: Tesla battery daily live screenshot
The new technologies announced by Battery Day are basically around improving efficiency, simplifying processes and reducing costs. For example, the biggest highlight is "4680 electrodeless battery", which rapidly expands the production scale, greatly reduces the battery cost and greatly improves the cruising range. According to reports, this electrodeless battery is 80mm high and 46 mm in diameter. Compared with the traditional lithium battery, there are no protruding lugs at both ends of the battery, which can significantly reduce the calorific value, solve the heat dissipation problem of high energy density batteries and improve the peak power of charge and discharge. Finally, the energy and power of the new battery are five times and six times that of the past, while the cost is reduced by 65,438+04% and the cruising range is increased by 65,438+06%.
At the media communication meeting, Tesla staff told reporters that removing the two tabs of the traditional lithium battery can accelerate the heat dissipation of the battery and make it easier to control the heat when the battery works. "The advantage of this technology is that the electrons in the original battery need to enter and exit from the polar ears to generate electricity, which leads to' a thousand troops crossing the wooden bridge' and generates a lot of heat, which is a waste. Now that the new welding process is made into endless ear shapes, the wooden bridge becomes a highway, which can improve the efficiency of the battery. "
Another noteworthy new technology is the application of new materials in batteries. Tesla said that silicon raw materials with good energy storage effect will be used to redevelop the anode of the battery, and elastic ionic polymer coating will be added to stabilize the silicon surface structure and improve the stability and safety of the battery. This technology can increase the cruising range by 20% and reduce the cost by 5%.
Why did Tesla choose silicon instead of graphite as anode material? The reason is that the capacitance of silicon is better than graphite. But silicon was not chosen before, because it will expand after absorbing electrons, and it is difficult to control the shape of the battery. Tesla has solved this problem, so the large-scale application of silicon anode materials is just around the corner.
Source: Tesla battery daily live screenshot
In terms of vehicle structure, Tesla has reached the forefront of the industry. In the new body structure, the battery pack is designed as a body structure, which is integrated with the front and rear parts of the body. This structure makes the weight distribution of the vehicle closer to the center and brings more flexible control. In order to realize this design, Tesla specially developed a new alloy material to strengthen the strength of the car body. This body structure will increase the cruising range by 14%, reduce the overall structural weight by 10%, and reduce 370 parts. Musk said, "The integrated process of body and battery allows the chassis of the whole vehicle to replace the assembly effect of hundreds of parts with only a few models, which greatly improves the efficiency and reliability of the whole vehicle process and makes the cost correspondingly very low."
Musk said that through the combination innovation of the system, Tesla's battery cost per kWh decreased by 56%, cruising range increased by 54%, and investment and production costs decreased by 69%. However, it takes about 18 months for Tesla to form the above advantages, and it takes about 3 years to fully realize it. At the same time, based on the greatly reduced production cost, Tesla is confident to develop an electric car with a price of around $25,000 within three years.
Geely: The vast ocean architecture faces the future.
On the eve of the auto show, Geely Automobile Group released the massive intelligent evolution experience architecture SEA, which is a pure electric original architecture with the user's travel experience as the core, and has built a three-dimensional layout of hardware layer, system layer and ecological layer, with the largest bandwidth in the world. Intelligent electric vehicle solution.
Source: Geely official
It is reported that the platform is a pure new energy architecture, with a wheelbase of 1800-3300mm, covering all specifications of A-to E-class vehicles, with no attenuation of 200,000 kilometers under NEDC working conditions and a long service life of 2 million kilometers. Among them, the NEDC cruising range of 1 10kWh modular CTP (the battery is directly integrated into the battery pack) exceeds 700 kilometers. In addition, on the day of the release, Geely also launched SEA? OS vehicle intelligent development system, based on the electronic and electrical architecture from three-domain integration to central integration, forms a complete development system through software and hardware, software algorithms, cloud computing and application scenarios. Its core chip components will be independently developed. At present, more than 4000 APIs (application program interfaces) have been implemented, which can realize FOTA (wireless upgrade) in the whole scene and life cycle.
What is even more surprising is that the vast architecture has the ability to meet the requirements of fully automatic driving, and adopts the technical route of advanced assisted driving, highly automatic driving and fully automatic driving. The full-scene, full-process functional module built with dual redundancy standards meets the highest international safety level certification, and can realize the automatic driving function of getting rid of hands, eyes, autonomous parking, automatic lane change and automatic navigation.
At present, the vast framework has attracted more than 7 cooperative brands and developed more than 16 models. According to the existing plan, starting from 202 1, new models based on the vast architecture will come out one after another, becoming the full-speed year of Geely's technological transformation and the development of intelligent electric vehicles.
GAC New Energy: Digital Production to Achieve Efficiency "Ceiling"
On the day of the auto show, GAC New Energy highlighted its digital construction achievements. According to reports, GAC New Energy innovatively applied digital process design, built a 3D digital production line model in the whole process, and used the global data cloud platform for production process analysis and decision-making for the first time in domestic automakers, greatly improving production efficiency and quality control capabilities. It uses a large number of lightweight materials such as aluminum alloy and aluminum riveting and spot welding switching technologies to create a "steel-aluminum mixed" production line. In addition, GAC New Energy provides in-depth interactive customization services, and users can participate through APP.
Subsequently, GAC New Energy released the world's first high-performance "four in one" integrated electric drive, using two gears and two motors. Through the deep integration of double motors+controllers+double reducers, this electric drive has brought up to 90% of 340KW power performance and comprehensive driving efficiency, increased power 13%, reduced volume by 30% and reduced weight by 25%, and has technical advantages such as multiple driving modes and intelligent evolution of OTA (over-the-air download), and has obtained more than 70 patents.
Weimar: Intelligent cockpit outlines the future relationship between people and vehicles.
Weimar's new WMConnect intelligent digital cockpit unveiled at this auto show has deep AI learning ability and above-average computing power. In terms of natural voice interaction and voice control that users pay attention to, there are more than 70 wakeup-free words, which can show 46 dynamic expressions. This kind of emotional communication based on the scene makes every emotion sound. In addition, the intelligent digital cockpit has eye contact ability. When the user looks at the center console in the car, the system will automatically wake up and listen to the instructions.
Source: Weimar official
Computing power determines the innovative experience of intelligent cockpit. Weimar intelligent digital cockpit adopts Qualcomm Snapdragon's third generation intelligent cockpit chip platform. The CPU and GPU of the new platform provide three times higher computing power than the industry average, and a forward-looking NPU (Neural Network Processor) is introduced. Have deep learning ability of AI artificial intelligence. In addition, the number of video inputs is five more than that of the previous generation platform, and the picture clarity and smooth interactive experience are comparable to those of first-line high-end smartphones.
Bosch: Fine Power of Silicon Carbide Power Devices
Bosch's silicon carbide power devices were exhibited for the first time at this year's auto show, which is also its first appearance in the world. Compared with traditional silicon-based products, silicon carbide power devices have achieved higher switching frequency while maintaining lower energy loss and smaller chip area, which has increased the cruising range of electric vehicles and hybrid vehicles by as much as 6%. Bosch has invested and developed vigorously in the field of new energy for many years, providing a comprehensive product portfolio for hybrid and electric vehicles, including motors, bridges, power electronic controllers, on-board charging and distribution units, 48V systems, braking and steering systems, etc. At present, Bosch has become the largest motor supplier in China except the main engine factory. This year, Bosch's "Bridge" and "IGBT" power modules will take the lead in mass production and supply to customers in China.
Source: Bosch official
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.