Power battery use data restoration system and method

The invention provides a power battery use data restoration system and method, and the system comprises a data cleaning module, a data quality initial evaluation module, a data restoration module and a data quality re-evaluation module which are all disposed on a cloud battery management system big data platform and are connected in sequence. The data quality initial evaluation module is used for performing data quality initial evaluation on the power battery use data subjected to data cleaning, determining whether the data meets a repair lower limit or not and judging a data missing degree; the data restoration module can perform data restoration on three kinds of data with different missing degrees through a spline interpolation method, a time sequence prediction algorithm and a matrix decomposition algorithm/deep learning algorithm, and finally the data quality review module performs comprehensive evaluation on the data quality, so that the data restoration efficiency is improved on the premise of ensuring