Battery manufacturing method based on battery internal consistency management and control

The invention discloses a battery manufacturing method based on internal consistency management and control of a battery, and provides a process method for laminating a single positive pole piece, a diaphragm and a single negative pole piece to form a piece core battery unit and carrying out on-line electrical performance parameter detection and sorting on each single piece core battery unit. A corresponding number of the sorted single-core battery units is selected according to the design capacity requirement to be assembled and pressed, so that the defects that in the battery manufacturing process in the prior art, detection and screening of a plurality of single-core battery units in a single battery are lacked, and an online assembly process is lacked are overcome; the defect that in the prior art, the internal consistency of a battery product is not effectively controlled in the production process is overcome, the problem of consistency of a plurality of single-core battery units in a single battery is s