Ultrasonic liquid injection device and method for lithium ion battery

Abstract

The invention relates to the technical field of aluminum alloys, and further discloses an ultrasonic liquid injection device and method for the lithium ion battery. The device comprises a liquid injection box shell, the top of the liquid injection box shell communicates with a vacuum nitrogen pipeline, a conversion box is arranged in the liquid injection box shell, connecting rods which are evenlydistributed are fixedly connected to the top of the conversion box, and the top ends of the connecting rods are fixedly connected with the liquid injection box shell. According to the ultrasonic liquid injection device and method for a lithium ion battery, the vacuum nitrogen pipeline is arranged, the interior of the shell of the liquid injection box can be pumped to a required vacuum pressure value, by arranging the ultrasonic generation device, ultrasonic waves can be emitted into the liquid injection box shell, under the interference of a vacuum environment condition and ultrasonic waves,the surface contact angle between the electrolyte and materials such as positive and negative electrodes of the lithium ion battery and a diaphragm can be destroyed, the surface tension is reduced, the infiltration speed is increased, and the method is short in liquid injection time, convenient to operate, high in reliability, high in practicability and convenient for a user to use.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an ultrasonic liquid injection device and method for a lithium ion battery. Background technique [0002] Lithium-ion battery is a secondary battery (rechargeable battery), which mainly relies on lithium ions to move between the positive electrode and the negative electrode to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes. L i+ is deintercalated from the positive electrode and inserted into the negative electrode through the electrolyte. The negative electrode is in a lithium-rich state. The reverse is true when discharging. Lithium-based batteries are divided into lithium batteries and lithium-ion batteries. Lithium-ion batteries are used in mobile phones and laptops. It is a lithium battery. Batteries generally use materials containing lithium as electrodes, which is a representative of m...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides an ultrasonic liquid injection device and method for lithium-ion batteries, which has the advantages of fast infiltration speed and high production efficiency, and solves the problem of compatibility between the positive and negative electrodes and separators of lithium-ion batteries and the electrolyte It is not easy to match, and the surface contact angle is too large, which leads to the problem that the electrolyte infiltration speed is still very slow and the production efficiency is low

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