High-nickel ternary lithium battery cathode powder material ultrasonic washing equipment

Abstract

The invention discloses a high-nickel ternary lithium battery positive electrode powder material ultrasonic washing equipment, comprising a cleaning tank with two cleaning chambers inside and outside, the cross-sectional shape of the inner cleaning chamber is a positive n-gon, and the top of the outer wall of the inner cleaning chamber An overflow port is provided, and a liquid inlet is provided at the bottom of the inner cleaning chamber. The bottom of the outer cleaning chamber is provided with a liquid outlet, and a plurality of ultrasonic transducers are evenly arranged on the outer wall of the outer cleaning chamber. A baffle is arranged in the outer cleaning chamber, and the bottom end, the inner end surface and the outer end surface of the baffle are respectively airtightly connected with the inner surface of the tank bottom, the outer surface of the inner partition and the inner surface of the outer partition, and the overflow port and the outlet The liquid ports are located on both sides of the baffle and are arranged close to the baffle. The structure of the device of the invention is relatively simple, and can effectively remove the residual alkali in the high-nickel ternary lithium positive electrode powder material with relatively low power consumption and better processing materials in a short period of time.

Description

technical field [0001] The invention relates to a particle water washing device, in particular to an ultrasonic water washing device for a positive electrode powder material of a high-nickel ternary lithium battery. Background technique [0002] At present, lithium cobalt oxide, lithium manganate and ternary lithium materials are mainly used as cathode materials for automobile batteries in the field of electric vehicles. Among them, ternary lithium material has gradually become a new mainstream cathode material due to its advantages of good comprehensive performance and low price. However, the high-nickel ternary lithium cathode powder material will have gas production problems due to residual alkali during use, resulting in a decrease in the safety of the battery cell. Therefore, reducing the alkaline residue on the surface of the high-nickel ternary lithium cathode powder material has become an important factor. The key to whether it can be widely used in power battery ca...

AI Technical Summary

Problems solved by technology

However, high-nickel ternary lithium positive electrode powder materials will produce gas problems due to residual alkali during use, resulting in a decrease in the safety of the battery cell. The key to whether it can be widely used in power battery cathode materials

[0003] Washing the high-nickel ternary lithium cathode powder material can reduce the amount of residual alkali on the surface of the material, but only deionized water or ethanol rinsing cannot fully clean the residual alkali closely attached to the surface of the material

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