JET PRINTING PROCESS FOR PROTECTIVE LAYER OF UPPER COVER OF LITHIUM BATTERY

The present invention discloses a jet printing process for a protective layer of an upper cover of a lithium battery, a jet printing region is divided into a first jet printing region and a second jet printing region and is combined with a flying ink blocking plate having a hollowed-out jet printing window, such that flying ink can be prevented from splashing onto non-jet printed areas such as a positive and negative electrodes, a liquid injection hole, a two-dimensional code area of the upper cover of lithium battery during jet printing at a position which requires ink jet printing.