Battery Pressing Member Avoids Insulating Member
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Solution Overview
Problem
Existing battery pressing methods risk scratching the surface of battery cells due to pressing the entire surface, including unnecessary sections, and can cause short-circuiting and damage from deformation of insulating members.
Innovation Solution
A battery pressing device and method that uses a pressing member to press the battery cell in the layering direction without pressing the insulating member, preventing short-circuiting and minimizing surface damage by ensuring the insulating member is not compressed, allowing for effective removal of air and gas within the battery element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire surface of the battery cell is pressed by rollers to remove air and gas, then electrolyte infusion is enhanced and gas is pressed out, but the surface of the battery cell may be scratched and the insulating member may be deformed causing short-circuiting
Solution Approach 1:
The pressing operation is applied selectively only to specific regions of the battery cell (the pressing regions) rather than the entire surface. The pressing member is configured to press only the regions where gas accumulation occurs, while deliberately avoiding the insulating member and other non-pressing regions, thus removing gas effectively without causing surface scratching or insulating member deformation
Solution Approach 2:
The battery cell surface is divided into multiple regions: pressing regions where gas removal is needed and non-pressing regions where the insulating member is located. The pressing member is configured to apply pressure only to the pressing regions, segmenting the pressing action from the entire surface to avoid harmful effects on the insulating member
Data Source
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AI summary
[Problem] To provide a battery pressing device and a battery pressing method for performing pressing while excluding the end of the battery cell. [Solution] The battery pressing device (70) presses a battery cell (10) configured so that an electrolyte and a battery element (15) in which electrodes (30), (40) and a separator (20) are arranged in layers are included in an external casing (13). The battery cell (10) has electrode terminals brought out of the external casing (13) from an end of the battery element (15), and also has an insulating member (50) that prevents short-circuiting of the electrode terminals (11) (12) and is attached to the electrode terminals (11), (12) inside the external casing (13). The battery pressing device (70) has a pressing member (72) for pressing the battery cell (10) in the layering direction of the battery element (15) over a region within which the insulating member (50) inside the external casing (13) is not pressed.