The invention discloses a
processing method for preventing the edge of a positive plate from being too thick and the positive plate, and the
processing method comprises the following steps: S1,
slurry pretreatment: filtering positive
slurry through a precise filter screen, adding a
nonionic surfactant, and uniformly stirring; s2,
slurry rheology regulation and control: carrying out shear pretreatment on the slurry until the
shear viscosity is 1200-1800 mPa.s; s3, a die
head gasket is optimized, specifically, an inwards-concave wedge-shaped
gasket is adopted, the edge thickness of the
gasket is smaller than that of a central area, and a fluid resistance gradient field is formed; s4,
coating is controlled through pressure pulsation, specifically, pressure fluctuation in a die head is monitored in real time through a
pressure feedback system, and the
extrusion speed is dynamically adjusted according to the monitoring result; and S5, differential
drying treatment: enabling the coated positive plate to pass through a multi-section
drying system, wherein the
drying temperature of an edge area is 15-25 DEG C lower than that of a central area. The
processing method provided by the invention can effectively prevent the problem that the edge of the positive plate is too thick, and improves the performance and safety of the battery.