The invention discloses a button
cell, comprising a positive cap, a positive plate, a diaphragm, a
lithium sheet and a negative cap, which are stacked successively, wherein a current collection grid is arranged between the positive cap and the positive plate; the current collection grid comprises a plurality of parallel
current collector sheets curved and bent repeatedly relative to a
base plane of the current collection grid; the repeatedly curved and bent
current collector sheets provide elasticity for the current collection grid, absorb an
internal dimension error due to large dimensional tolerance of internal components of the
cell or consumption of interior materials, and ensure and always maintain good contact effect and
conductivity between internal components of the
cell, thereby reducing the
internal resistance of the cell, and increasing the discharging current and the cell capacity. The invention also discloses a button cell
current collector which comprises the current collection grid, wherein the current collection grid comprises the plurality of parallel integrated
impact-molded current collector sheets curved and bent repeatedly relative to the
base plane of the current collection grid. The current collector ensures and always maintains a good contact effect for the interior of the cell to which the current collector is applied, reduces the
internal resistance of the cell, and increases the discharging current and the cell capacity.