BYD recently held a Cell to Body (Cell-to-Body) judging event at its global headquarters, which was attended by top experts and scholars in the industry, as well as a number of experts and scholars, including Dr. Lian Yubo, director of the China Society of Automobile Manufacturers. They witnessed the integration of CTB battery and body technology, witnessed CTB's first car BYD "Seal" and lateral impact test, and jointly developed the development direction of the CTB industry.
Academician Sun Fengchun said: "CTB's battery cell and car body integration technology is a new technology, which will play a leading role in more revolutionary technologies in the future and play a certain role in promoting the development of the industry." ”
Comprehensively mentionedHigh level of technical commanders
Wu Zhixin, a vice president of China Automotive Technology and Development Corporation, said: "The quality of an electronic product depends on its power performance 70 or 80 percent. BYD's CTB technology adopts a highly safe "blade-type" battery, breaking the traditional "trinity" concept, fusing the upper and lower shells together, realizing the integration from "sandwich" and "sandwich" to "integration", making full use of the energy and node function of "blade-type", thereby realizing the transformation of the energy transmission mode and improving the safety performance, torsional rigidity and handling performance of the whole vehicle, thus creating a new type of "integration" development trend.
The safety of CTB technology and the performance of vane batteries
In the BYD sedan crash test laboratory, the lateral crash test of the "Seal" sedan has attracted the attention of many experts. Because of the technical support of CTB, this kind of car, after the collision, has not changed much, and the doors can be opened, so it is also a great protection for passengers. Dr. Zhou Mingdong from the School of Mechanical and Electrical Engineering of Shanghai Jiaotong University explained, "However, BYD's CTB technology has integrated its advantages of high strength, high strength, and high strength into the body, which has been greatly improved in terms of load capacity and safety performance, creating a new development direction." ”
Based on the characteristics of EVs, BYD has developed a new EV body suitable for EVs, which can realize the efficient distribution and transfer of collision torque and reduce the number of collisions caused by accidents. Through CTB Technology, ePlatform 30 will increase the safety performance of the car by 50% during driving, and the safety performance of the vehicle will be increased by 45% during driving.
CTB technology for improved safety and handling
CTB technology combines the drive train and the vehicle drive train to greatly improve the handling rigidity of the vehicle and widen the driving distance. Guan Xin from the Department of Automotive Engineering of Jilin University said: "When the vehicle is running, the stiffness of the body increases, which ensures the vehicle's responsiveness. BYD's Sir is equipped with CTB technology, with a torque of 40,500 Nm Celsius, and its biggest advantage is that its overall shape is flatter, so its overall performance has been greatly improved, and at the same time, it has also reduced the weight of the body. To this end, this project is proposed to be in the sea tiger elk experiment, the vehicle speed is 835 km h, the speed of a one-way road is 133 km h, and the maximum lateral movement acceleration in the gentle state is 105 g for significantly improved handling.
BYD has achieved good results in continuous technology research and development
BYD has always focused on science and technology, and began to develop a new round of drive system as early as 2003, and officially launched a new round of drive system - e-platform in 2021. 3.0, which will make a complete change to the structure of electric vehicles. As for DM-i, BYD has been investing a lot of money in research and development. Now, they have applied CTB technology and vehicle body integration technology to the industry, which will play a better leading role in the new energy vehicle industry and greatly improve the safety and comprehensive performance of the whole vehicle.