Abstract: This application provides an electrode plate slitting method and apparatus, an electronic device, and a storage medium. The method includes: obtaining a length of an electrode plate to be cut; and when it is determined that a slitting parameter meeting a preset condition exists based on the length of the electrode plate, cutting the electrode plate to be cut based on the slitting parameter to obtain the electrode plate after cutting. The preset condition includes: the slitting parameter is able to be used for cutting the electrode plate to be cut and a length of each electrode plate roll obtained after cutting is within a preset range. This decreases the probability of obtaining an electrode plate roll with an inappropriate length at the end of the cutting, reducing the waste in the electrode plate.

Abstract: A method for identifying abnormal battery cell includes determining, based on target feature data of a battery cell, whether the battery cell is an abnormal battery cell. The target feature data includes feature data used for differentiation between an abnormal battery cell and a normal battery cell generated during a formation process.

Abstract: A method and apparatus for identifying abnormal battery cell, an electronic device, and a storage medium are provided. The method includes determining, based on target feature data of a battery cell, whether the battery cell has experienced abnormal polarization; where the target feature data includes feature data related to polarization of the battery cell generated during a formation process. On the one hand, as there is a clear distinction in target feature data between a battery cell with abnormal polarization and a battery cell without abnormal polarization during a battery cell formation process, accurate determination of whether a battery cell has experienced abnormal polarization can be achieved. On the other hand, the purpose of identifying a battery cell with abnormal polarization before loading can also be achieved, thereby reducing the risk of decreased battery system performance and battery pack scrapping caused by loading abnormal battery cells.

Abstract: A cold press pressure control method includes: acquiring a current thickness of a cold-pressed pole piece and a current rolling speed of a cold press at the moment; determining a cold press output pressure or a cold press adjust pressure corresponding to the current thickness of the pole piece and the current rolling speed of the cold press according to the current thickness of the cold-pressed pole piece and the current rolling speed of the cold press at the moment, as well as a preset first association relationship or a preset second association relationship; and controlling the cold press to perform pressure output according to the cold press output pressure or the cold press adjust pressure, so that at the next moment, the cold press performs cold pressing on the pole piece according to the cold press output pressure. An electronic device for implementing the method is also provided.