Abstract
Based on the crash test of new energy vehicles, the mechanical response data of power batteries during the collision process were collected, and the average impact strength curve of power batteries of typical new energy vehicles in China was obtained. The average impact strength curve was mathematically processed to obtain the impact strength characteristic value and tolerance by using the equivalent trapezoidal wave and the least square method, thereby determining the test conditions of the dynamic strength of the domestic new energy vehicle power battery. The differences are analyzed by comparing with ISO 12405-3 test conditions, which provides an important reference for the revision of power battery test standards in the future.
Highlights
Under the double crisis of energy and environment, it is inevitable that the automobile industry will improve the energy efficiency of automobiles and reduce the discharge of pollutants [Liying (2009)]
The dynamic strength test conditions of the new energy vehicle power battery complying with China national conditions are determined
The ISO parameters are derived by the frontal offset deformable barrier collisions, by contrast, the test conditions used in this paper are frontal rigid barrier collisions
Summary
Under the double crisis of energy and environment, it is inevitable that the automobile industry will improve the energy efficiency of automobiles and reduce the discharge of pollutants [Liying (2009)]. According to the vehicle crash test, the mechanical response data of the power battery for the A0, A-class new energy vehicles during the collision test is obtained in this paper. The dynamic strength test conditions of the new energy vehicle power battery complying with China national conditions are determined. It provides an important reference for the revision of future power battery pack test standards by benchmarking the ISO 124505-3 test conditions and performing parameter difference analysis. 2. Power Battery Collision Strength Data Acquisition The research object is A0, A-class new energy vehicle (referred to as A0, A-class car in the text). The battery pack should be evaluated with different impact strength
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