Chinese language battery producer CATL has launched the Bedrock Chassis, a skateboard-style framework designed to endure frontal impacts at speeds of as much as 120 km/h with out igniting or exploding.
This revolutionary chassis adopts a battery-centric method, using cell-to-chassis integration know-how to straight join the battery cells with the chassis. This technique facilitates a shared structural design that enhances security. By decoupling the chassis from the higher physique, the Bedrock Chassis can soak up 85% of the impression power throughout a collision, in comparison with roughly 60% for conventional chassis designs.
Frontal impression security assessments are generally carried out at 56 km/h as per the China New Automotive Evaluation Program (C-NCAP). At this pace, the power produced in a frontal collision simulates a fall from a peak of 12 meters. In distinction, a frontal impression at 120 km/h generates a collision power practically 4.6 instances larger than that noticed at 56 km/h.
The Bedrock Chassis boasts three key options: inner integration, chassis decoupling from the higher physique, and exterior openness. Its scalable software program and {hardware} structure, together with standardized interfaces, enable for adaptable configurations to accommodate numerous car fashions and situations. This allows a “one chassis structure, a number of car fashions” method, enhancing growth effectivity and decreasing the analysis and growth cycle.
A notable design component of the CATL Bedrock Chassis is its three-dimensional biomimetic tortoise-shell construction, which integrates the physique and power unit framework to safeguard the power unit. The chassis consists of an plane carrier-grade arresting construction that distributes impression forces throughout completely different pathways throughout a collision, slowing down the car and significantly lessening the drive of obstacles intruding into the cabin. The rigidity of the chassis is additional improved by way of submarine-grade hot-formed metal with a power of two,000 MPa, aerospace-grade aluminum alloy with a power of 600 MPa, and numerous barrier constructions.
By way of security, the chassis disconnects its high-voltage circuit inside 0.01 seconds after an impression and discharges any residual high-voltage power inside 0.2 seconds. The battery cells have been subjected to rigorous testing, together with high-speed sled impression assessments at 60 km/h and 90-degree bending assessments.
In keeping with CATL, the fourth-generation Cell-to-Chassis (CTC) know-how and inverted battery cell know-how optimize chassis area utilization whereas minimizing the danger of chassis injury. Moreover, the chassis helps mechanical, software program, and EE decoupling, paving the way in which for L3 to L4 clever driving capabilities.
Supply: CATL
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