Today, let's talk about the latest "CTC" technology released by zero-run cars. To tell the truth, in Chongzhou (Chengdu small county) whether it is T03 or C11, the visibility of zero running is getting higher and higher, which can be seen that after S01, zero running really found the right point of force.
Back to the point, about the battery, in the past ten years, everyone has almost emphasized the concept of a module, that is, the module is composed of cells, and then a battery pack is composed of multiple modules. In the past few years, the hotter battery technology is "CTP", and the BYD blade battery, which is more familiar to everyone, is cell to Pack, trying to directly form the cell cell as a battery pack, eliminating the intermediate state of the module.
So analogy to understand, CTC (cell to chassis) is to further the battery pack directly into the body structure, "battery pack and chassis, chassis is the battery pack", in short, integrated.
The official said that such a benefit is: in terms of space, zero-run CTC technology by eliminating the battery superstructure, reducing redundant structural design, the vertical space of the vehicle increased by 10mm, the battery layout space increased by 14.5%, making the interior space layout more flexible and practical.
In terms of endurance, zero-run CTC technology has better airtightness than traditional solutions, which can improve battery insulation performance and battery space.
In terms of performance, zero-run CTC technology can bring a 25% increase in the torsional stiffness of the vehicle, and the lightweight coefficient reaches 2.4, an increase of 20%. The higher the torsional stiffness of the body, the stronger the resistance to resonance, which means that the vehicle can have better driving performance, better chassis response efficiency, and can also help with NVH performance.
In terms of safety, zero-run CTC technology has carried out several rounds of rigorous tests, such as bottom ball hitting, extrusion, thermal diffusion and nearly 30 tests to ensure battery safety.
Having said that, if you want to implement CTC technology (if you want to "transform" the battery pack into a chassis), you must solve an important problem: battery safety, that is, structural safety. After all, many household SUVs and car chassis now use a load-bearing chassis, this one-piece modular structure, in the vehicle collision or chassis bottom, the battery pack is easier to squeeze.
In order to solve this problem, in the zero-run CTC technology, the battery pack chassis structure will be redistributed the load-bearing body structure, officially called "double skeleton ring beam structure". In simple terms, the engineers raised the height of the battery pack at the bottom of the vehicle, from the original external layout to the interior of the chassis, which increased the ground clearance of the previous zero-run car battery pack by 10mm.
In addition, zero-run officials also said that the battery pack under CTC technology has high adaptability and strong scalability, supports 800V high-voltage platform, supports 400 kilowatts of super fast charging, and can last more than 200 kilometers after charging for 5 minutes.
In addition, the zero-run CTC technology is no longer the "PPT category", because on the C01, a new zero-run car, it will be equipped with this battery technology. In other words, the zero-run C01 is expected to become the world's first electric vehicle without a separate battery pack.
Regarding the C01 car, the information currently obtained is:
The first model under CTC technology, positioned as a medium and large sedan, with a body size length of 5050mm, a wheelbase of 2930mm, a rear legroom of 319mm, and a standard trunk volume of 496L.
At the same time, it will be equipped with a 90 kWh power battery pack, with a zero-run self-developed AI BMS intelligent battery management system, with a comprehensive working condition of more than 700 kilometers. The C01 will debut in May this year and open pre-sale, and the price of the new car is expected to be around 200,000 yuan.
In general, after the CTP, everyone will inevitably choose a more "extreme" CTC technology route, especially car companies. Because this is not only technological innovation, but more importantly, it is the proposition of changing vehicle design and industrial chain, and the main engine factory with CTC technology will control more dominance, so you will see Tesla, Volkswagen, Volvo and even Bosch and Benteler are engaged in CTC.
epilogue:
Zero-run cars took the lead in mass production of CTC technology, which not only proved the correctness of zero-running choices in innovative research and development, but also once again showed that in the new energy track, Chinese brands have every opportunity to "overtake by way".
Teacher Wen 丨 Qin
Figure 丨 Official