BIADI's CTB Technology Challenge Succeeds in "Harder Than Ever" Double-Sided Side Column Bumping Test

Recently, in order to verify the significance of CTB technology for the safety of electric vehicles, TOP Safety chose BYD Seal to conduct a double-sided side column crash test for new energy vehicles. The test simulated a real and harsh scenario to test the passive safety of the vehicle and battery safety after the new energy vehicle was superimposed with two side pillar impacts.

Equipped with CTB battery body integration technology, BYD Seal has successfully passed the challenge of the main driver's side pillar touch test, the passenger's rear side pillar touch test, and the battery pack reuse test after two side pillar touches in the TOP Safety double-sided side pillar touch test.

Double sided side column collision test challenges are much harder to overcome

For new energy vehicles, compared to traditional fuel vehicles, in addition to considering the structure of the vehicle and occupant protection safety, but also to consider the vehicle collision occurs after the electrical safety, and the side column touch compared to frontal collision, the collision point is more centralized, the collision area is smaller, the vehicle will produce a strong "cutting force", which is the bottom of the new energy vehicles installed with a battery pack This is a very difficult test for new energy vehicles with battery packs installed at the bottom.

The test used a double-sided side column crash, on the basis of a single side column crash, greatly increasing the difficulty of the test, simulating a more extreme chain of impact conditions, for the new energy model of the test is much more difficult.

BYD Seal CTB passes the challenge successfully

BYD Seal CTB uses the same vehicle in this double-sided side column collision challenge, and carries out side column collision again on the basis of one standard side column collision. In the first crash test, the entire BYD Seal vehicle impacted a 254mm steel column at a speed of 32km/h and an angle of 75°, and then the same vehicle was used to conduct a superimposed second crash test, with the passenger rear impact point for the side column touch test.

Double-sided side column touch test (first side column touch)

Double-sided side column touch test (second side column touch)

The test results show that the maximum deformation of the whole vehicle structure of BYD Seal is 183mm, compared with the average deformation of traditional fuel vehicles of about 300mm, the maximum deformation of Seal equipped with CTB technology is reduced by about 120mm. It shows that CTB battery body integration technology can improve the structural strength of the whole vehicle and ensure the structural safety of each impact position from front to back.

BYD Seal test data results

The excellent performance is due to the body structure unique to BYD Seal. Compared to the traditional body structure, the longitudinal beam of the CTB battery-body integrated structure narrows the height difference between the front cabin and the passenger compartment, which can more effectively utilize the strength advantage of the material itself and provide a smoother path for force transmission. The full-flat floorboard design makes the Corsair's white body lateral force transfer structure more stable and coherent.

In terms of occupant protection, under CTB's excellent structural safety foundation and airbag buffer protection, all three occupant protection indicators in the entire vehicle have also reached full marks, maximizing the protection of each user's life safety.

Battery safety part, after two collisions, the battery pack only produces slight deformation in the frame, no damage to the charged part, the main structure of the battery pack is basically not deformed, the battery pack does not appear to leakage, fire, the overall structure is stable, and at the moment of collision, the vehicle's battery management system immediately performs high-voltage power-off protection strategy, the voltage of high-voltage system in the collision of the 820 milliseconds after the collision, the voltage quickly dropped to the safe range, which effectively ensures the lives of the driver. The voltage of the high-voltage system drops rapidly to the safe voltage range within 820 milliseconds after the collision, which effectively ensures the safety of drivers and passengers.

In order to further test the safety and stability of the battery pack, TOP Safety also conducted an even more difficult test on the BYD Seal. After reloading the battery pack that was involved in the two side-pillar bumps into another new vehicle, the vehicle could start normally and drive safely, proving that everything was normal in terms of the functionality of the battery pack after the collision.

BYD seal double-sided side post touching rear battery power up successfully

This is due to the application of CTB battery body integration technology, through the whole vehicle sandwich structure, to play the blade battery is both the energy body and structural components of the advantages of the outstanding safety design, so that the safety performance of the battery has been greatly enhanced, the CTB one-piece design to optimize the force transmission path, and effective protection of the internal structure of the outstanding performance.

BYD's CTB technology fully demonstrates that safety is the greatest luxury of electric vehicles

Along with the gradual upgrading of automobile consumption, people are paying more and more attention to the safety performance hidden in the appearance of automobiles. In the double-sided side column collision test, BYD Seal successfully passed the test with excellent safety performance through the combination of blade battery and CTB technology, which provides the body with sufficient energy-absorbing space and a smoother energy transfer path, and excels in overall vehicle safety and electric safety.

CTB Battery Body Integrated Structure

CTB technology is based on the core design concept of "Battery Body Integration", and finds inspiration in "honeycomb", combining the unique rectangular structure and super strength of the blade battery, deriving "honeycomb-like aluminum" structure, bringing a landmark innovation in battery packaging technology. The "honeycomb-like aluminum" structure brings a milestone innovation in battery assembly technology, by rigidly connecting the razor blade battery pack with the car body, forming a complete whole by combining the floor (top cover of the battery cell) - battery cell - tray and the car body, forming a high-strength "whole car sandwich" structure.

Under the CTB technology, after the integration of the blade battery pack and the body, the wide pack battery as a rigid body structural component strengthens the body ring structure, while optimizing the battery pack frame structural design, the battery top cover, electric core and frame participate in the vehicle force transmission, further strengthen the chassis structure, balance the center of gravity of the vehicle, so that the vehicle strength is greatly improved, and the safety reaches the leading level in the industry.

At a time when the penetration rate of the new energy vehicle market has exceeded 30%, the market's concern for the safety of new energy vehicles has also reached an unprecedented height. Previously, the BYD Seal long range rear drive version received a five-star score in C-NCAP, with a comprehensive score rate of 88.6%, verifying the safety of the BYD Seal, which is an excellent choice for high-quality travel nowadays.

In the TOP Safety double-sided side column collision test, BYD Seal even proved the safety of CTB battery-body integration technology through the test. BYD Seal equipped with CTB technology is a very powerful answer to the safety of the whole vehicle and battery of new energy vehicles!