Mixing process for improving low-temperature performance of lithium battery

Abstract

The invention discloses a mixing process for improving the low-temperature performance of a lithium battery. The mixing process comprises the following steps of: dispersing large powder in a solution,uniformly distributing the large powder, and dispersing secondary aggregates formed by an electrode active material in production slurry of the lithium battery by using a dispersing assembly of dispersing equipment. The dispersing equipment comprises a bottom plate, a dispersing shell, a dispersing cover, the dispersing assembly, a rotating assembly, supporting legs, a first connecting rod, a second connecting rod, a discharging pipe and an electromagnetic valve, and the dispersing assembly comprises a dispersing motor, a fixing base, a stabilizing shell, a buffer cavity, a spring, a stabilizing sleeve, a rotating shaft, a dispersing grinding head, a dispersing grinding body, an impeller grinding head and an inner ring. The rotating assembly drives slurry on the edge in the dispersing shell to move reversely, the rotating assembly comprises a protective shell, a gear ring, a through hole, a gear, a fixing frame and a rotating motor, then the dispersing assembly achieves uniform dispersing, and the total comprehensive performance of a lithium battery is greatly improved.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a mixing process for improving the low-temperature performance of lithium batteries. Background technique [0002] Lithium-ion batteries are widely used due to their advantages of light weight, high specific energy and long life. Low-temperature lithium batteries are made of special materials and processes, suitable for use in sub-zero cold environments, and have excellent discharge capacity and working performance. Excellent, it is generally required to work normally at around -40°C, the discharge capacity should be kept above 80%, and the minimum working temperature can reach -50°C. [0003] However, at present, the low-temperature performance of lithium-ion batteries, especially in low-temperature environments below -30°C, is poor, which inhibits their application in special fields. Factors that affect the low-temperature performance of lithium-ion batteries include ...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the low-temperature performance of lithium-ion batteries, especially in low-temperature environments below -30°C, is poor, which inhibits their application in special fields. Factors that affect the low-temperature performance of lithium-ion batteries include electrolyte and electrode material particles. degree and charge transfer resistance etc.

Images