Battery parallel arrangement assembly method for series connection of flexible packaging lithium ion batteries

The invention relates to a battery parallel arrangement assembly method for series connection of flexible packaging lithium ion batteries. The method comprises the following steps of manufacturing a series assembly board, inserting battery lugs into corresponding lug holes of the serial assembly board one by one, immobilizing a battery pack, and then uniformly bending the lugs towards corresponding tin-coated regions; welding the lugs on the tin-coated regions by use of soldering tin, and respectively welding positive and negative outgoing lines of a power supply on positive and negative electrode tin-coated regions of the series assembly board; and performing sleeve thermal shrinkage treatment on the whole battery pack so that the whole battery pack is firm. The method disclosed by the invention is reasonable in design; all batteries are assembled in the same orientation; the design mode of the assembly board turns series connection of the batteries into parallel connection, thereby effectively eliminating t