CTB technology integrates the upper cover of the battery pack with the underbody of the traditional structure to form the sandwich structure of the whole vehicle with the upper cover, "blade battery" and tray. The system volume utilization rate of power battery is increased to 66%, and the system energy density is increased by 10%.
The structural innovation of new energy vehicles is evolving, and the space utilization is becoming more and more compact. The battery body integration technology has attracted many enterprises to layout.
On May 20, Byd Company Limited(002594) released the CTB battery body integration technology and carried it on the seal for the first time Byd Company Limited(002594) in terms of introduction, CTB technology integrates the upper cover of the battery pack with the underbody of the traditional structure to form the sandwich structure of the whole vehicle with the upper cover, "blade battery" and tray. The system volume utilization rate of power battery is increased to 66%, and the system energy density is increased by 10%.
CTB technical diagram Byd Company Limited(002594) for drawing
Torsional stiffness is an important parameter to measure the performance of the whole vehicle. It refers to the ability of the body to resist elastic deformation when subjected to external force. The higher the torsional stiffness, the higher the comfort, handling and safety of the vehicle. The e-platform 3.0 based on CTB technology has a torsional stiffness of more than 40000 n · M / °. It is reported that it can be comparable to millions of luxury cars, making the upper limit of fuel vehicles the lower limit of electric vehicles.
CTB technology also has better space use efficiency. Compared with the traditional structure, on the premise of the same clear height of the space in the car, the height of the car body is reduced by 10mm, the shape of the whole car is lower, and the aerodynamic performance and visual effect are improved.
Byd Company Limited(002594) its products are divided into Dynasty series, Ocean series, warship series and other different sectors. The first CTB technology is the seal model of Ocean series. In addition to CTB battery body integration technology, the seal is also equipped with ITAC technology, rear drive / 4WD power architecture, front double wishbone and rear five link independent suspension for the first time. The endurance mileage of the four versions of seals ranges from 550km to 700km. After comprehensive subsidies, the pre-sale price ranges from 212800 yuan to 289800 yuan. The pre-sale is opened on the same day.
CTB is a structural innovation. Before that, the mainstream scheme was CTP (cell to pack), which integrates the electric chip into the battery pack and eliminates the module link Contemporary Amperex Technology Co.Limited(300750) the world's first CTP battery pack was mass-produced in 2019 and has been installed on many mainstream models in the past two years.
Byd Company Limited(002594) released in March 2020, the blade battery also uses CTP technology. It is reported that the volume specific energy density of blade battery is 50% higher than that of traditional iron battery. At present, blade battery has been matched on Byd Company Limited(002594) all series of pure electric vehicles.
The price of seal car is between 2128289800 yuan Byd Company Limited(002594) for drawing.
In order to further save space and reduce costs, the integration of battery and body chassis is becoming a trend Byd Company Limited(002594) before the release of CTB, Contemporary Amperex Technology Co.Limited(300750) launched CTC (cell to chasis) technology. The official website said that this technology integrates the electric cell with the body, chassis, electric drive, thermal management and various high and low voltage control modules, making the driving mileage exceed 1000 km; The intelligent power domain controller is used to optimize power distribution and reduce energy consumption, and the power consumption per 100 kilometers is reduced to less than 12 degrees.
The structural innovation plan will have an impact on the new energy vehicle industry chain Sealand Securities Co.Ltd(000750) believes that the main engine factory with the advantage of technology research and development will control more CTC dominance; The main engine plant, which focuses on automatic driving and scientific and technological travel services and operates with light assets, will be developed by CTC led by a third party; Under the scenario of CTC development led by the third party, battery enterprises and chassis suppliers will compete and cooperate, and the latter will enter CTC and usher in historical industrial opportunities.
"CTC will make the group efficiency reach more than 90%, the space utilization rate reach more than 70%, and the number of parts will be further reduced to about 400." Sealand Securities Co.Ltd(000750) said in the research report that CTC technology is expected to be gradually applied in 2023 and reach 60% penetration in the new electric vehicle market by 2030. "The market scale of CTC system including battery will reach 850 billion yuan and that of CTC system excluding battery will reach about 390 billion yuan."
