RELIABILITY ANALYSIS METHOD OF PURE ELECTRIC VEHICLE BATTERY BASED ON ENVIRONMENTAL EFFECT

摘要

The present invention discloses a method for analyzing the performance reliability of a pure electric vehicle battery based on a kind of environmental effect, which is used to analyze the magnitude of risk for pure electric vehicle battery performance of the action of environmental stress, the performance index of the pure electric vehicle battery to be studied, and determine environmental stress; establish an analysis of the confidence model used to analyze the magnitude of risk for pure electric vehicle battery performance of environmental stress; Adopt the risk analysis method, and obtain the element value in each matrix of the model according to the military standard; and calculating and obtaining the magnitude of the risk for the pure electric vehicle battery performance of each environmental stress using the model. The present method overcomes the fact that the traditional reliability distribution method does not consider the influence of the correlation existing between stresses on the system to internal defects, makes the analysis result of the final risk more reasonable, and makes modeling based on matrix superposition forming, and subsequent analysis calculations are all quantitative calculation analysis, thereby increasing the accuracy of analysis calculation results.