Wound cell and battery cell

The utility model relates to a winding battery cell and a battery monomer, and the winding battery cell comprises a diaphragm layer which is provided with at least one first diversion hole; the positive pole piece layer and the negative pole piece layer are isolated by the diaphragm, and at least one second flow guide hole is formed in the positive pole piece layer and/or the negative pole piece layer; when the diaphragm layer, the positive pole piece layer and the negative pole piece layer are wound along the winding direction to form a winding structure, the first flow guide hole and the second flow guide hole form a flow guide channel at the bending part of the winding structure, and the flow guide channel allows the electrolyte to flow from the outside of the winding structure to the inside of the winding structure. According to the utility model, the infiltration effect of the battery is improved, and the problems of breakage and wrinkling of the pole piece are solved. 本实用新型涉及一种卷绕电芯和电池单体，其中卷绕电芯包括：隔膜层，开设至