The invention discloses a novel flexibly-packaged
lithium ion battery and a preparation method therefor. The service life of the flexibly-packaged
lithium ion battery can be prolonged, and the safety performance can be improved; two rings of sealed packaging edges are arranged on the periphery of an
aluminium plastic film cell of the flexibly-packaged
lithium ion battery; the two packaging edges comprise an inner side packaging edge and an outer side packaging edge; and an
inert gas
airbag is arranged between the inner side packaging edge and the outer side packaging edge. According to the novel flexibly-packaged
lithium ion battery, the
inert gas
airbag is arranged around the
cell part of the novel flexibly-packaged
lithium ion battery, so that the
internal cell is isolated from the external;
moisture in the outside is hard to penetrate the packaging part and enter the interior of the
cell, so that the service life of the battery is prolonged, and the production cost is saved; the
inert gas
airbag is arranged around the cell part of the novel flexibly-packaged
lithium ion battery; the inner side packaging is relatively thick and the outer side packaging is relatively thin, so that when the interior of the
battery cell is inflated, the inner side packaging part is inflated to be opened firstly, and the
inert gas enters the cell part; therefore, a large amount of air is prevented from entering the interior of the cell to react with lithium to result in danger, and the safety performance of the battery is improved.