Several state engineering awards have recognized collaborative advances in battery and vehicle technologies developed by BYD, Geely, and Changan. The honors highlight breakthroughs in structural welding, intelligent electric chassis design, fast thermal management, and precision manufacturing. Officials emphasize that these awards reflect collective progress across multiple organizations rather than proprietary solutions from a single manufacturer.
At the core of the safety commendations is an advanced thermal control system designed to manage intensive electrical currents during high-power charging. A partnership including Changan Automobile, China Automotive Engineering Research Institute, CALB, and BYD established standardized protocols for monitoring cell temperatures multiple times per second. This software-based approach prevents hot spots by triggering cooling measures before battery cells exceed 65°C, enabling fast charging close to maximum limits without compromising longevity or safety.
Importantly, the award-winning project standardizes the rules for software monitoring rather than mandating a single cell format. As a result, participating automakers retain their unique hardware designs. BYD continues to use elongated, rectangular lithium iron phosphate cells as structural beams, while Changan focuses on high-stability cells rated for over 5,000 cycles. Geely’s short-blade cells achieved a certified peak input of 1,093 kW during state validation tests. These diverse implementations now share a common safety blueprint while maintaining distinct energy density profiles.
The collaboration has transitioned to commercial application, supporting roughly 100,000 fast-charging vehicles currently in operation.
Separate awards were granted for intelligent electric chassis systems co-developed with Tsinghua University and several automakers. These designs incorporate electromechanical braking with fail-operational architecture and advanced regenerative algorithms, boosting urban range by up to 15% and enhancing lateral stability in premium driving scenarios.
Additional honors recognized precision welding lines equipped with real-time closed-loop monitoring. Automated adjustments to welding currents ensure consistent bond strength across high-strength steel and aluminum panels, reducing defects and supporting large-scale production of lightweight components.
Taken together, these state-validated technologies underpin the rapid expansion of domestic high-voltage charging networks, including stations capable of delivering up to 1,500 kW of peak output.
Source: CarNewsChina
