Pole piece coating removal device, method, pole piece, battery, battery pack, and electric device

By using an electrode coating removal device to remove active material from the current collector with adhesive components, the problems of high cost, low precision and structural strength in electrode coating removal in the prior art are solved, and efficient electrode preparation and energy density improvement are achieved.

CN118142970BActive Publication Date: 2026-06-09NINGDE AMPEREX TECHNOLOGY LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGDE AMPEREX TECHNOLOGY LTD
Filing Date
2024-03-19
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing methods for removing electrode coatings suffer from problems such as high cost, low precision, damage to current collectors, or impact on electrode structural strength, leading to a reduction in battery energy density.

Method used

An electrode coating removal device is used, including a transmission component, first and second structural components, and an adsorption component. The active material is bonded and removed from the current collector by the adhesive on the first structural component to form an empty foil area, which simplifies the process and reduces the impact on the strength of the electrode structure.

Benefits of technology

The process of forming empty foil regions on the electrode is simplified, the amount of active material removed is reduced, the energy density and preparation efficiency of the electrode are improved, and the impact on the structural strength of the electrode is reduced.

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Abstract

This application discloses an electrode coating removal apparatus, method, electrode, battery, battery pack, and electrical device. The electrode coating removal apparatus includes a transmission component, a first structural member, a second structural member, and a first adsorption component. The transmission component is configured to move the electrode along a preset trajectory. The electrode includes a current collector and an active material disposed in the current collector. The electrode has a first side and a second side opposite to each other in the thickness direction. The first structural member is movably disposed on the first side. The second structural member is disposed on the second side and is used to connect the electrode. The first adsorption component includes a first adhesive member, at least a portion of which is located between the first structural member and the electrode. The first adhesive member includes a first adhesive segment configured to connect to the first structural member. The first structural member is configured to press the first adhesive segment against the electrode, causing the first adhesive segment to adhere a portion of the active material and carrying the adhered active material away from the current collector.
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