Whole vehicle safety assessment method based on bottom needling whole vehicle heat diffusion test

• Main Authors: CHEN BIN, PAN LILI, FAN LI, WU SHIYU, ZHAO YONGGANG, MA SHIPENG, YAN WENSEN
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2024
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention relates to the technical field of new energy vehicle fire safety detection, in particular to a whole vehicle safety assessment method based on a bottom needling whole vehicle heat diffusion test. The method comprises the following steps: needling a battery pack of a new energy vehicle through needling equipment to enable a target battery cell of the battery pack to generate thermal runaway, then performing vehicle door verification in a first preset time period after the thermal runaway of the new energy vehicle, performing fire extinguishing or fire prevention operation in a second preset time period, and performing multiple tests in a third preset time period. Therefore, the new energy vehicle can be tested by needling the battery pack at the bottom of the vehicle. Meanwhile, test data in the test process are collected, and the fire protection score of the new energy vehicle is obtained according to the test data, so that visual and quantitative evaluation of the new energy vehicle is realized