High function type eletrolysis solution used for lithium ionic cell

The invention relates to a high-performance electrolyte formula used for a lithium ion battery, which belongs to the technical field of the electrolyte of the lithium ion battery. The formula is characterized in that novel lithium salt, namely lithium bis (oxalato) borate (LiBOB) is adopted as electrolyte salt, annular carboxylic ester gamma-butyrolactone (GBL), ethylene carbonate (EC), and one or two linear carboxylic esters as organic solvent, and one or two of film formation additives, vinylene carbonate (VC) and ethylene sulfite (ES) is (are) added. Compared with carbonic ester solvent, the multi-component solvent has the advantages that the solubility of LiBOB is greatly enhanced, the electric conductivity of the electrolyte is higher, the electrochemical stability is good, the bulk resistance is lower, and the requirement of the lithium ion battery can be satisfied. When the high-performance electrolyte is applied to an experimental half element, the high and low temperature cycle performance of the tes