Failure Analysis Of Vehicle Mounted Storage Battery

With the development of Chinese manufacturing 2025 strategic objectives,equipment manufacturing standards and improve the quality of the work has become the core task of the 13 th Five-Year plan,the development of new aerospace equipment is an important part of.Expose the vehicle battery incidental function abnormal failure problem of this thesis is based on the product development process,the battery power is sufficient,connect the on-board equipment of the power switch,operation panel indicator system abnormal state.According to the fault tree of the phenomenon of the China space system classic analysis method,to depict the "abnormal function of vehicle battery failure" as the top event of fault tree model,layer by layer by screening may have hidden trouble of the link,change the internal characteristics of the battery failure caused by accurate positioning.The product selection of a variety of batteries,different characteristics of the battery parameters are different,the basic technical parameters provided by the manufacturers do not have accurate estimation of battery power conditions.Therefore,this paper studies the key characteristic parameters of different battery by experiment and data analysis,and summarizes the general method of research on the key characteristic parameters.Battery according to the key parameters and battery capacity,internal resistance,open circuit voltage cycling frequency attenuation,developed high accuracy battery,high reliability estimation algorithm and calibrat ion correction algorithm,the algorithm is verified by experiments.Finally,the conclusion is verified by checking the battery power estimation algorithm modified estimation accuracy can be controlled within 10%,meet the design requirements of the task book index,at the same time it is proved to improve the estimation accuracy of power function can eliminate the abnormal vehicle battery failure phenomenon.The experiment verified by fault tree analysis,research,characteristic of battery power estimation methods and estimation methods,summed up the different battery key characteristic parameters of the general experimental methods,experimental data and application method of residual capacity estimation method,the data model of life cycle management for the battery to extend battery replacement cycle the economic benefits of the project,doubled,while reducing the waste battery pollution.