Provided is a secondary battery cell, which comprises an anode pole piece, an anode pole tab, a cathode pole piece, a cathode pole tab and an isolation membrane. The anode pole piece comprises an anode current collector and an anode diaphragm; the cathode pole piece comprises a cathode current collector and a cathode diaphragm; and the isolation membrane is arranged between the anode pole piece and the cathode pole piece. An anode pole tab accommodating groove is formed on the anode pole piece, with the anode current collector being arranged at the bottom thereof and the anode diaphragm beingarranged at the peripheral side thereof; and the anode pole tab is accommodated in the anode pole tab accommodating groove and is electrically connected to the anode current collector at the anode pole tab accommodating groove. A cathode pole tab accommodating groove is formed on the cathode pole piece, with the cathode current collector being arranged at the bottom thereof and the cathode diaphragm being arranged at the peripheral side thereof; and the cathode pole tab is accommodated in the cathode pole tab accommodating groove and is electrically connected to the cathode current collector at the cathode pole tab accommodating groove. A cathode pole piece alignment groove is further formed on the cathode pole piece, with the cathode current collector being arranged at the bottom thereofand the cathode diaphragm being arranged at the peripheral side thereof, and is located in an alignment area, of the anode pole tab accommodating groove, on the cathode pole piece.