Apparatus for manufacturing electrodes and method of manufacturing electrodes

By using a multi-stage rolling process to compress the electrode plates, the problem of low manufacturing efficiency of secondary battery electrodes in existing technologies has been solved, achieving high-density and high-quality electrode manufacturing and meeting the needs of high-capacity secondary batteries.

CN122177723APending Publication Date: 2026-06-09SAMSUNG SDI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SAMSUNG SDI CO LTD
Filing Date
2025-12-05
Publication Date
2026-06-09

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Abstract

Disclosed are an apparatus for manufacturing an electrode and a method of manufacturing an electrode. The apparatus for manufacturing an electrode includes a roller configured to roll an electrode plate, and the roller is configured to primary roll the electrode plate at a first compression ratio to form a primary electrode plate, secondary roll the primary electrode plate at a second compression ratio to form a secondary electrode plate, and tertiary roll the secondary electrode plate at a third compression ratio to form a tertiary electrode plate.
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Claims

1. An apparatus for manufacturing electrodes, the apparatus comprising: Rollers are configured to press electrode plates. The rollers are configured to roll the electrode plate at a first compression ratio to form a primary electrode plate, roll the primary electrode plate at a second compression ratio to form a secondary electrode plate, and roll the secondary electrode plate at a third compression ratio to form a tertiary electrode plate.

2. The device according to claim 1, wherein the third compression ratio is greater than the second compression ratio, and the second compression ratio is greater than the first compression ratio.

3. The device according to claim 1, wherein the difference between the second compression ratio and the first compression ratio is less than or equal to the difference between the third compression ratio and the second compression ratio.

4. The device according to claim 1, wherein the difference between the second compression ratio and the first compression ratio is less than 12%.

5. The device according to claim 1, wherein the difference between the third compression ratio and the second compression ratio is less than 15%.

6. The device according to claim 1, wherein the difference between the second compression ratio and the first compression ratio and the difference between the third compression ratio and the second compression ratio are both 5% or more.

7. The device according to claim 1, wherein the first compression ratio is 80% or more.

8. The device according to claim 1, further comprising: A coating machine is configured to coat a composite material layer on at least one surface of a substrate to form the electrode plate.

9. The device according to claim 8, wherein the three-stage electrode plate has a composite material layer density of 1.70 g / cc or higher.

10. The device according to claim 8, wherein the three-stage electrode plate has a substrate compression of less than 15 mm.

11. The device according to any one of claims 1 to 10, further comprising: A slitting machine is configured to cut the three-stage electrode plates at intervals to form unit electrode plates; as well as A trimmer is configured to trim at least one side of the unit electrode plate. The trimmer is configured to trim a width of less than 3% relative to the total width of the unit electrode plate.

12. The device according to any one of claims 1 to 10, wherein the electrode plate comprises a negative electrode plate.

13. An apparatus for manufacturing electrodes, the apparatus comprising: The first roller is configured to roll the electrode plate at a first compression ratio to form a primary electrode plate. The second roller is configured to press the primary electrode plate with a second compression ratio to form a secondary electrode plate; as well as The third roller is configured to press the secondary electrode plate with a third compression ratio to form a tertiary electrode plate.

14. The device of claim 13, wherein the difference between the second compression ratio and the first compression ratio is less than or equal to the difference between the third compression ratio and the second compression ratio.

15. The device of claim 13, wherein the difference between the second compression ratio and the first compression ratio is 12% or less, and the difference between the third compression ratio and the second compression ratio is 15% or less.

16. The device according to claim 13, wherein the first compression ratio is 80% or more.

17. The apparatus of claim 13, further comprising: A coating machine is configured to coat a composite material layer on at least one surface of a substrate to form the electrode plate.

18. The device according to claim 17, wherein the tertiary electrode plate has a composite material layer density of 1.70 g / cc or higher.

19. The device according to claim 17 or 18, wherein the three-stage electrode plate has a substrate compression of less than 15 mm.

20. A method for manufacturing an electrode, the method comprising: The electrode plate is initially rolled at a first compression ratio to form a primary electrode plate; The primary electrode plate is rolled at a second compression ratio to form a secondary electrode plate; as well as The secondary electrode plate is rolled at a third compression ratio to form a tertiary electrode plate.