Shulou(Shulou.com)11/24 Report--

Recently, BYD CTB (Cell to Body) technical expert appreciation meeting was held at BYD's global headquarters. Sun Fengchun, academician of the Chinese Academy of Engineering, and a group of top experts and scholars from the automobile industry visited BYD to appreciate the CTB battery body integration technology and deeply experience the first model of CTB technology-- BYD Seal, witnessing the dynamic performance and side post impact safety experiments of seals supported by CTB technology. Jointly explore the innovation and reform trend of the new energy vehicle architecture. Lian Yubo, executive vice president of BYD Group and president of Automotive Engineering Research Institute, attended the tasting meeting.

CTB technology has been well received by academicians and experts and scholars. Academician Sun Fengchun said: "CTB battery body integration technology is a systematic innovation of new energy vehicle power battery and vehicle integration design, and a beacon of more subversive technological innovation in the future, playing a leading role in the industry."

Tapping the potential of blade battery, CTB battery body fusion innovation and comprehensive upgrading of the performance of powered electric vehicles

Wu Zhixin, deputy general manager of China Automotive Technology Research Center Co., Ltd., said: "the pros and cons of electric vehicles depend on batteries." BYD CTB technology adopts high safety blade battery. Through the integrated design of battery body, it breaks the traditional division of parts, combines the upper cover of battery system with the floor of car body, evolves from the past battery sandwich structure to vehicle sandwich structure, and makes full use of the advantages of blade battery as both energy body and structure to change the power transmission path of electric vehicles. To achieve the overall improvement of electric vehicle safety performance, torsional stiffness and handling performance, leading the new trend of electric vehicle architecture design.

Seal side post collision experiment, the big shot witnessed the safety ability of CTB technology on the spot.

In the BYD collision laboratory, experts witnessed the seal side post impact experiment on the spot. With the aid of CTB technology, the seal body has small deformation after collision, the door opens normally, and the invasion of the passenger cabin is very small, which well protects the safety of the passengers in the car. Zhou Mingdong, an associate professor at the School of Mechanical and Power Engineering at Shanghai Jiaotong University, explained, "BYD CTB technology skillfully takes advantage of the high safety and stiffness of blade batteries to integrate batteries with vehicle architecture to improve body load capacity and vehicle safety, providing a new design idea for the industry."

According to the characteristics of electric vehicles, BYD CTB technology innovates and develops the exclusive safety framework of electric vehicles to achieve efficient distribution and transmission of collision force and reduce casualties caused by collision accidents. The e-platform 3.0 model equipped with CTB technology has a 50% increase in the structural safety of the collision car and a 45% increase in the structural safety of the side post bumper car.

Experience extreme manipulation, CTB technology high torsional stiffness empowers seal sports performance

CTB technology integrates the depth of the battery and the car body, which greatly improves the torsional stiffness of the vehicle and helps to broaden the upper limit of control. Guan Xin, dean of the Automotive Research Institute of Jilin University, said after deep experience: "the stiffness of the car body has been improved, which ensures that the reaction time of the vehicle is very short when driving." Under the support of CTB, the torsional stiffness of BYD Seal is as high as 40500N / m / °, the integrated design of flat blade battery and body brings low centroid of sports car at the same time, the test speed of seal elk reaches 83.5km / h, the speed of single moving line reaches 133km / h, and the maximum lateral stable acceleration of steady rotation is 1.05g, realizing a comprehensive leap in vehicle handling performance.

Deeply ploughing new energy vehicles for many years, BYD continues to lead the innovation and development of the industry.

BYD ploughed the technological innovation of new energy vehicles for a long time, and began to develop new energy vehicles after entering the automotive industry in 2003. After nearly 20 years of continuous iteration, BYD launched the cradle of the next generation of electric vehicles-e-platform 3.0 in 2021. It changes the traditional design methods and design theory, leads the industry technology development direction through integrated innovation, and helps BYD new energy vehicles to make forward-looking technological breakthroughs. CTB technology is the latest practice of BYD's integrated innovation. Through the innovative framework of deep integration of battery body, many problems in the design process of electric vehicles such as collision safety development, chassis stability development, body structure development and so on have been solved, the overall improvement of driving experience of electric vehicles has been realized, and new energy vehicles have been popularized better and faster.

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