Winder and battery production method
The winding machine uses torque sensors to detect the start of sheet winding, addressing the challenge of non-destructive electrode end deviation measurement, ensuring accurate positioning and safety in battery manufacturing.
WO2026134048A1PCT designated stage Publication Date: 2026-06-25PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2025-12-09
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Existing methods fail to non-destructively check the deviation between the start ends of the negative and positive electrodes in the longitudinal direction, necessitating disassembly for measurement.
Method used
A winding machine equipped with torque sensors for transport motors to detect the timing when the torque becomes zero, indicating the start of sheet winding, allowing non-destructive detection of the positional relationship between the start ends of multiple sheets.
Benefits of technology
Enables precise detection of the positional relationship between the start ends of electrodes without disassembly, ensuring the deviation falls within predetermined ranges, enhancing manufacturing efficiency and safety.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure JP2025042963_25062026_PF_FP_ABST
Abstract
A winder 100 according to the present disclosure includes a winding core 12 for winding a first sheet and a second sheet in layers, a first transport motor 21 for transporting the first sheet toward the winding core 12, a second transport motor 22 for transporting the second sheet toward the winding core 12, a first torque sensor 31 for detecting torque of the first transport motor 21, and a second torque sensor 32 for detecting torque of the second transport motor 22. A point in tme at which a detected value of the first torque sensor 31 becomes zero or less is defined as a first timing, which is a point in time at which winding of the first sheet onto the winding core 12 begins, and a point in time at which a detected value of the second torque sensor 32 becomes zero or less is defined as a second timing, which is a point in time at which winding of the second sheet onto the winding core 12 begins.
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