An ultrasonic debubbling device

By using the high-frequency vibration and vacuum suction technology of the ultrasonic defoaming device, the problem of uneven electrode coating caused by air bubbles in the slurry was solved, thereby improving the quality of the electrode and the performance of the battery.

CN122124510APending Publication Date: 2026-06-02SHENG DONG LI (GUANGZHOU) ULTRASONIC ELECTRONIC EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENG DONG LI (GUANGZHOU) ULTRASONIC ELECTRONIC EQUIPMENT CO LTD
Filing Date
2026-03-23
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing coating processes, bubbles are easily formed in the slurry during mixing and transfer, resulting in uneven electrode coating, affecting rolling stability and battery charge and discharge performance. Furthermore, the bubbles occupy internal space, reducing the effective contact area.

Method used

An ultrasonic defoaming device is used, which combines high-frequency vibration generated by an ultrasonic transducer with vacuum pumping to break up and remove bubbles in the slurry. The pressure gradient is used to accelerate the bubbles to float to the surface and be extracted.

Benefits of technology

It effectively removes air bubbles in the slurry, improves the uniformity and density of the electrode coating, reduces pinholes and uneven thickness, and enhances the charge and discharge performance of the battery.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the technical field of battery electrode production. Addressing the issue that traditional methods often result in air bubbles in the slurry affecting the overall quality of subsequent battery electrodes, this application proposes an ultrasonic defoaming device. The device includes a defoaming tank, a feed pipe, a discharge pipe, and a vacuum pump. The defoaming tank has a feed end and an exhaust end at its bottom and top, respectively. The feed end is connected to the feed pipe and the discharge pipe via a three-way fitting. The feed pipe and the discharge pipe, at their ends furthest from the defoaming tank, are respectively equipped with a feed valve and an exhaust valve. Both the feed pipe and the discharge pipe have ultrasonic action sections, each equipped with several ultrasonic transducers. The exhaust end is connected to an exhaust pipe, which is connected to the suction pipe of the vacuum pump. This application effectively eliminates air bubbles in the slurry.
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