Ultrasonic washing equipment for high-nickel ternary lithium battery positive electrode powder material

Abstract

The invention discloses ultrasonic washing equipment for a high-nickel ternary lithium battery positive electrode powder material. The ultrasonic washing equipment comprises a washing tank with an inner washing cavity and an outer washing cavity, the cross section of the inner washing cavity is in a regular n-polygon shape, an overflow opening is formed in the top of the outer wall of the inner washing cavity, and a liquid inlet is formed in the bottom of the inner washing cavity. A liquid outlet is formed in the bottom of the outer cleaning cavity, a plurality of ultrasonic transducers are evenly arranged on the outer wall face of the outer cleaning cavity, the cross section of the outer cleaning cavity is in the shape of a regular n-side ring, and n is an integer larger than 4. A baffleis arranged in the outer cleaning cavity, the bottom end, the inner end face and the outer end face of the baffle are in sealed connection with the inner surface of the tank bottom, the outer surfaceof an inner partition plate and the inner surface of an outer partition plate correspondingly, and the overflow opening and the liquid outlet are located in the two sides of the baffle and are close to the baffle. The equipment is relatively simple in structural form, and can be used for well treating the material at relatively low power consumption and relatively short time in order to effectively remove residual alkali in the high-nickel ternary lithium positive electrode powder material.

Description

technical field [0001] The invention relates to a granular water washing equipment, in particular to an ultrasonic water washing equipment for the positive electrode powder material of a high-nickel ternary lithium battery. Background technique [0002] At present, lithium cobalt oxide, lithium manganese oxide and ternary lithium materials are mainly used as positive electrode materials for automobile batteries in the field of electric vehicles. Among them, the ternary lithium material has gradually become a new mainstream cathode material due to its advantages such as good comprehensive performance and low price. However, the high-nickel ternary lithium positive electrode powder material will produce gas due to the residual alkali during use, resulting in a decrease in the safety of the battery cell. Whether it can be widely used in power battery cathode materials is the key. [0003] Washing the high-nickel ternary lithium positive electrode powder material can reduce th...

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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