Abstract: The present disclosure relates to the technical field of batteries, and discloses an electrode plate, a cell and a lithium battery. The electrode plate comprises a support layer, a conductive coating layer and an active material layer, wherein at least part of the area of the surface of at least one side of the support layer is coated with the conductive coating layer, and at least part of the area of the surface of a side of the conductive coating layer away from the support layer is covered with the active material layer. The electrode plate provided by the present disclosure has a high production efficiency, a low production difficulty and low production costs.

Abstract: The present disclosure belongs to the technical field of battery production and manufacturing, and specifically relates to a cylindrical battery and a battery module. The cylindrical battery includes: a housing, a cell and a top cover assembly. The housing is provided with an opening. The cell is arranged in the housing, the cell is provided with a first tab and a second tab opposite in polarity to the first tab, and the first tab and the second tab are both located on a same end face of the cell. The top cover assembly seals the opening and includes a cover, a first conductive portion and a second conductive portion. The cover, the first conductive portion and the second conductive portion are in insulating connection, the first conductive portion is connected with the first tab, and the second conductive portion is connected with the second tab.

Abstract: The disclosure relates to the technical field of battery production and manufacture, in particular to a cylindrical battery electrode plate including a electrode plate body and a plurality of tabs provided on one side of the electrode plate body, wherein a gap area is provided between adjacent tabs of the plurality of tabs, each of the plurality of tabs is respectively provided with one or more slits extending along a surface thereof, a starting end of each of the slits is provided at one end, away from the electrode plate body, the extending direction of each of the slits is arranged to form an included angle with the arrangement direction of the plurality of tabs, and each of the plurality of tabs is divided into a plurality of sub-tabs by the slits.

Abstract: Disclosed are a bare cell, a cylindrical battery and an assembly method of the bare cell. The bare cell is formed a cylinder by stacking and winding a first electrode plate, a separator and a second electrode plate, the polarity of the first electrode plate is opposite to the polarity of the second electrode plate, at least one of the first electrode plate and the second electrode plate forms a plurality of tabs at at least one end of the cylinder in an axial direction, each of the plurality of tabs is provided with at least one die-cutting line to form a plurality of sub-tabs, the plurality of tabs are bent and flattened in a radial direction, and the plurality of sub-tabs of two adjacent layers of the plurality of tabs are arranged in a staggered manner.