CN-122025511-A - Apparatus and method for manufacturing electrode plate for secondary battery

Abstract

An apparatus and method for manufacturing an electrode plate for a secondary battery are disclosed. The apparatus includes a welding unit configured to contact an electrode plate including a stack of a plurality of substrates, the welding unit configured to weld the plurality of substrates in a thickness direction of the electrode plate to form a welding surface, a coating unit configured to apply an insulating material onto the welding surface of the electrode plate to form a coating, a welding surface imaging unit configured to capture an image of the welding surface outside the electrode plate, and a control unit electrically connected to the coating unit and the welding surface imaging unit, the control unit configured to receive information about the welding surface from the welding surface imaging unit and move the coating unit over the electrode plate.

Inventors

• LI JUNXIE
• Quan Biju

Assignees

• 三星SDI株式会社

Dates

Publication Date

20260512

Application Date

20251014

Priority Date

20241112

Claims (20)

1. 1. An apparatus for manufacturing an electrode plate for a secondary battery, the apparatus comprising: a welding unit configured to contact the electrode plate, the electrode plate including a stack of a plurality of substrates, the welding unit configured to weld the plurality of substrates in a thickness direction of the electrode plate, thereby forming a welding surface; A coating unit configured to apply an insulating material onto the welding surface of the electrode plate, thereby forming a coating layer; A welding surface imaging unit external to the electrode plate, the welding surface imaging unit configured to capture an image of the welding surface, and A control unit electrically connected to the coating unit and the welding surface imaging unit, the control unit configured to receive information about the welding surface from the welding surface imaging unit and move the coating unit over the electrode plate.
2. 2. The apparatus of claim 1, wherein the welding unit is an ultrasonic welding unit.
3. 3. The apparatus of claim 1, further comprising a drying unit configured to apply heat to the coated insulating material to form a dried coating.
4. 4. The apparatus of claim 3, further comprising a coating imaging unit outside the electrode plate, the coating imaging unit configured to capture an image of the coating.
5. 5. The apparatus of claim 4, wherein the control unit is configured to receive information about the coating from the coating imaging unit and control operation of the coating unit.
6. 6. The apparatus of claim 3, further comprising a dry-quantity measurement unit outside the electrode plate, the dry-quantity measurement unit configured to capture an image of the dried coating.
7. 7. The apparatus of claim 6, wherein the control unit is configured to receive information about a drying amount of the dried coating from the drying amount measurement unit and control an operation of the drying unit.
8. 8. The apparatus of claim 2, wherein the welding unit comprises: An anvil facing the side of the electrode plate, and A welding head facing the anvil, the electrode plate being between the anvil and the welding head, the welding head being configured to weld the electrode plate by applying ultrasonic waves while pressing the electrode plate against the anvil.
9. 9. The apparatus of claim 8, wherein the anvil and the welding head are configured to contact the electrode plates, each of the anvil and the welding head being rotatable about a preset rotational axis.
10. 10. The apparatus of any one of claims 1 to 7, wherein the welding unit comprises a plurality of welding units arranged at opposite sides of a transport center axis of the electrode plate.
11. 11. A method of manufacturing an electrode plate for a secondary battery, the method comprising: conveying the electrode plate formed by stacking a plurality of substrates; welding the electrode plate in the thickness direction of the electrode plate by a welding unit along the conveying direction of the electrode plate; applying an insulating material to a welding surface formed on the welded electrode plates by a coating unit to form a coating layer; Capturing an image of the welding surface of the electrode plate by a welding surface imaging unit, and Information about the welding surface is received from the welding surface imaging unit by a control unit that moves the coating unit over the electrode plate.
12. 12. The method of claim 11, wherein welding the electrode plates by the welding unit comprises welding the plurality of substrates by ultrasonic welding.
13. 13. The method of claim 11, further comprising applying heat to the insulating material applied to the electrode plate after the electrode plate passes through the coating unit.
14. 14. The method of claim 13, further comprising capturing, by a coating imaging unit disposed outside the electrode plate, an image of the coating formed on the electrode plate after the electrode plate passes through the coating unit.
15. 15. The method of claim 14, further comprising receiving, by the control unit, information about the image of the coating and controlling operation of the coating unit.
16. 16. The method of claim 13, further comprising measuring an amount of drying of the coating formed on the electrode plate after undergoing application of heat.
17. 17. The method of claim 16, further comprising controlling, by the control unit, an amount of drying of the electrode plate based on the amount of drying of the coating.
18. 18. The method of claim 12, wherein the welding the electrode plate comprises: Positioning an anvil of the welding unit to face a side of the electrode plate, and Positioning a welding head of the welding unit to face the anvil, the electrode plate being disposed between the anvil and the welding head, and applying ultrasonic waves by the welding head to weld the electrode plate while pressing the electrode plate on the anvil.
19. 19. The method of claim 18, wherein each of the anvil and the horn are rotatable about a preset rotational axis, the anvil and the horn each configured to contact the electrode plate.
20. 20. The method of claim 11, wherein the welding unit comprises a plurality of the welding units, and the plurality of welding units are disposed at opposite sides of a conveyance center axis of the electrode plate.

Description

Apparatus and method for manufacturing electrode plate for secondary battery Technical Field The present disclosure relates to an apparatus and method for manufacturing an electrode plate for a secondary battery. Background Secondary batteries capable of being repeatedly charged and discharged have recently been applied to various technical fields including electric, electronic, communication, and computer industries. Secondary batteries are widely used not only as energy sources for mobile electronic devices such as digital cameras, cellular phones, and notebook computers, but also as energy sources for hybrid electric vehicles, which have been proposed as solutions to solve air pollution caused by conventional gasoline and diesel internal combustion engines using fossil fuels. Research is being conducted from various aspects to improve performance and stability of the secondary battery according to its usage pattern and consumption level. The information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and, thus, may include information that does not form the prior art. Disclosure of Invention Embodiments include an apparatus for manufacturing an electrode plate for a secondary battery, the apparatus including a welding unit configured to contact the electrode plate, the electrode plate including a stack of a plurality of substrates, the welding unit configured to weld the plurality of substrates in a thickness direction of the electrode plate to form a welding surface, a coating unit configured to apply an insulating material onto the welding surface of the electrode plate to form a coating layer, a welding surface imaging unit configured to capture an image of the welding surface outside the electrode plate, and a control unit electrically connected to the coating unit and the welding surface imaging unit, the control unit configured to receive information about the welding surface from the welding surface imaging unit and move the coating unit over the electrode plate. The welding unit may be an ultrasonic welding unit. The apparatus may further include a drying unit configured to apply heat to the coated insulating material, thereby forming a dried coating. The apparatus may further include a coating imaging unit outside the electrode plate, the coating imaging unit configured to capture an image of the coating. The control unit may be configured to receive information about the coating from the coating imaging unit and control the operation of the coating unit. The apparatus may further include a dryness measuring unit outside the electrode plate, the dryness measuring unit configured to capture an image of the dried coating. The control unit may be configured to receive information on the drying amount of the dried coating from the drying amount measuring unit and control the operation of the drying unit. The welding unit may include an anvil facing the electrode plate, and a welding head facing the anvil, the electrode plate being between the anvil and the welding head, the welding head being configured to weld the electrode plate by applying ultrasonic waves while pressing the electrode plate onto the anvil. The anvil and the horn may be configured to contact the electrode plate, and each of the anvil and the horn may be rotatable about a predetermined axis of rotation. The welding unit may include a plurality of welding units disposed at opposite sides of the transfer center axis of the electrode plate. Embodiments include a method of manufacturing an electrode plate for a secondary battery, the method including conveying an electrode plate formed by stacking a plurality of substrates, welding the electrode plate in a thickness direction of the electrode plate by a welding unit in a conveying direction of the electrode plate, applying an insulating material to a welding surface formed on the welding electrode plate by a coating unit to form a coating layer, capturing an image of the welding surface of the electrode plate by a welding surface imaging unit, and receiving information about the welding surface from the welding surface imaging unit by a control unit, the control unit moving the coating unit over the electrode plate. Welding the electrode plates by the welding unit may include welding a plurality of substrates by ultrasonic welding. The method may further include applying heat to the insulating material applied to the electrode plate after the electrode plate passes through the coating unit. The method may further include capturing, by a coating imaging unit disposed outside the electrode plate, an image of the coating formed on the electrode plate after the electrode plate passes through the coating unit. The method may further comprise receiving, by the control unit, information about the image of the coating and controlling the operation of the coating unit. The method may further include measuring a drying amount of th