Today, Hirata is technology leader and pioneer in battery assembly systems. We have now implemented numerous systems for the complete assembly of batteries for electric vehicles worldwide. The systems supplied include both the assembly of battery blocks, which are usually referred to as the "front end", and the subsequent systems for the final assembly of complete batteries, also referred to as the "back end". Technologies specially developed for battery assembly are used, such as pressing of the cell blocks, application of heat-conducting paste, gluing, laser welding of the arresters, helium leak tests and special performance tests of the batteries. The following example shows a possible constellation for a complete plant for the production of batteries for electric vehicles.