However, there is insufficient attention paid to the safety of samples at various levels in actual application conditions and throughout their entire life cycle. There is an urgent need to establish a comprehensive power battery safety evaluation system to safeguard the safe operation of new energy vehicles.
After years of dedicated research, the Automotive Research Center has achieved several innovative results in the safety evaluation of power batteries for new energy vehicles: First, it pioneered the establishment of an intrinsic thermo-electric coupling evaluation platform for power batteries in China, conducting tests and evaluations on 35 typical products. It was among the first internationally to obtain test results on the adiabatic thermal runaway of large-capacity power batteries, with the platform's technical parameters and application level at the forefront internationally. Second, it established testing methods and evaluation indicators for single-cell thermal runaway and system thermal diffusion of power batteries. These results have been applied to draft domestic and international standards such as the "Safety Technical Conditions for Electric Buses" and global technical regulations for electric vehicle safety, reaching an internationally leading level. Third, it developed an evaluation method based on the "mechanical-electrical-thermal" safety of power batteries, combining real-world vehicle operating conditions. The resulting national standards are used for product announcement testing, reaching a leading level domestically. Fourth, it established a full life-cycle safety evaluation system for power batteries, from single cells to systems, based on various real-world vehicle operating conditions. It pioneered the "dynamic envelope graph" evaluation framework for safety threshold boundaries, changing the previous situation where domestic power battery safety evaluation methods were singular and independent.
The project has resulted in one authorized patent, 22 published papers, and the leadership or participation in drafting two international standards and regulations, six national standards, and one local standard. Two monographs have also been published. The project's findings have been applied to the announcement management of domestic power battery products, which is of great significance for supporting the drafting of international battery safety regulations and the formulation and revision of national standards, and for promoting the sustained and healthy development of my country's new energy vehicle power battery industry.
