A slot die for making microstructured battery electrode sheets

By using a slit-type coating die to simultaneously complete the microstructure coating during the coating process, the problem of rapid and mass production of microstructured battery electrodes has been solved, achieving efficient and uniform preparation of microstructured battery electrodes and improving the overall performance of battery electrodes.

CN119702336BActive Publication Date: 2025-11-11ENOVATE3D (HANGZHOU) TECH DEV CO LTD
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Patent Information

Application Number
CN202311273623.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-09-28
Publication Date
2025-11-11
Estimated Expiration
2043-09-28

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Abstract

This invention relates to the field of battery electrode coating technology, specifically to a slit-type coating die for preparing microstructured battery electrodes. The coating die includes a coating head for coating a current collector with a slurry, and a feeding device connected to and communicating with the coating die for supplying the slurry to the coating die. The coating die includes an upper die, a coating limiting gasket, and a lower die, all stacked and fixedly arranged. A microstructure gasket for coating the current collector with a microstructure is also provided between the coating limiting gasket and the upper die. The microstructure gasket has a microstructure flow channel for discharging the slurry on the side near the coating limiting gasket. Compared to existing technologies that first coat the slurry and then form a microstructure coating on the slurry using laser etching or a template method, this invention reduces the number of slurry coating steps. It allows for simultaneous microstructure coating during conventional slurry base coating, and the equipment is simple to operate and easy to implement.
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Citation Information

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