Method and system for evaluating battery capacity consistency

• Main Authors: ZHONG YUXIANG, XIA JIALING
• Format: Patent
• Language: Chinese; English
• Published: 05.05.2023
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a method and system for evaluating battery capacity consistency, and the method comprises the steps: arranging a plurality of testers which can form a plurality of detection regions in the transverse direction of a pole piece, and enabling the plurality of detection regions to form an arrangement form in the winding process of the pole piece; the plurality of testers correspondingly detect the surface density in the detection area; obtaining an average value and a standard deviation of the surface density of the detection area in the longitudinal direction according to the surface density in the detection area, and obtaining a longitudinal surface density standard interval; the average value and the standard deviation of the surface density difference values of the two adjacent transverse upper detection areas are obtained, a transverse surface density standard interval is obtained, and the consistency of the longitudinal upper surface density and the transverse upper surface density o