2results about How to "No increase in quantity" patented technology

The present application provides a secondary battery having a laminated structure in which a positive electrode active material layer coated on a positive electrode foil and a negative electrode active material layer coated on a negative electrode foil face each other with a separator interposed therebetween and an electrolyte is injected between the positive electrode foil and the negative electrode foil, and the periphery of the separator is continuously bonded to the edge of the positive electrode or the negative electrode over the entire circumference.

The utility model discloses an electrode assembly, a battery cell monomer and a battery pack, and relates to the technical field of batteries, the electrode assembly comprises a first pole piece, a second pole piece and a diaphragm, and the polarity of the second pole piece is opposite to that of the first pole piece; the first pole piece comprises at least two first sub-pole pieces which are arranged in a laminated manner, every two adjacent first sub-pole pieces are connected through a first connecting piece, one of the second pole pieces is provided with a second pole lug which is arranged on the same side as the first pole lug, and the diaphragms are arranged on the two sides of each first sub-pole piece; in the technical scheme provided by the embodiment of the invention, the first pole piece and the second pole piece both adopt a split type design, the two sub pole pieces of the first pole piece are connected through the first connecting piece, and the laminated pole pieces can be folded towards one side, so that the thickness of the pole pieces is doubled, and the thickness of the pole pieces is reduced. The number of the tabs can be not increased while the capacity of the battery cell is expanded, and the length of the tabs does not need to be increased.