Separator Cutting Support to Prevent Electrode Plate Wrinkles
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Solution Overview
Problem
The issue of electrode plate wrinkles occurs during the cutting-off process of a separator in the winding of an electrode stack, leading to potential defects and safety hazards in batteries.
Innovation Solution
A cutting-off apparatus with a slitting mechanism and a supporting element that provides support to the target electrode plate during the cutting process, mitigating the impact of the separator rebound and preventing skewness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the separator is cut off during winding of an electrode stack, then the electrode stack can be formed, but wrinkles of the electrode plate occur
Solution Approach 1:
A supporting element is introduced as an intermediary component between the separator and the electrode plate. This supporting element provides temporary support to the electrode plate during the separator cutting process, preventing direct contact between the rebounding separator and the electrode plate, thereby avoiding wrinkles while enabling continuous production
Solution Approach 2:
The supporting element is positioned in advance at the location where the electrode plate will be affected by separator rebound. It provides pre-positioned support to cushion the electrode plate against the harmful rebound effect before it can cause wrinkles, allowing the cutting operation to proceed without compromising electrode plate quality
Data Source
AI summary
This application relates to the field of battery production equipment technologies, and in particular, to a cutting-off apparatus and battery assembly line production equipment. The cutting-off apparatus at least includes a slitting mechanism and a supporting element. With the provision of a supporting element connected to the slitting mechanism, the supporting element can provide a supporting force acting on a target electrode plate when the slitting mechanism in a cutting-off position is cutting off the separator. Then, when the separator rebounds due to being cut off and impacts the target electrode plate, the target electrode plate can avoid skewness due to the rebound of the separator under the support of the supporting element, thereby alleviating the problem of wrinkles of the electrode plate caused by the separator being cut off during winding of an electrode stack and reducing the risk of defects inside the battery.