Battery Cell Insulating Support Plate for Tab Compression Protection
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Solution Overview
Problem
Existing battery assembly methods often compress the tab, leading to damage and reduced service life due to the use of flat insulators.
Innovation Solution
A battery cell design featuring an insulating support plate with a first support portion that protrudes towards the main body portion, creating a gap to accommodate the tab, thereby preventing compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat insulator is used entirely, then the insulator can be simple in structure and easy to manufacture, but it compresses the tab causing damages and reduces battery service life
Solution Approach 1:
The insulator is designed with different local structures: a first support portion that protrudes toward the main body portion to create a gap, and a second support portion that remains flat. This local differentiation allows the insulator to provide protection in the tab area while maintaining simplicity in other areas, resolving the contradiction between manufacturing ease and reliability.
Solution Approach 2:
The insulator transitions from a completely flat two-dimensional structure to a three-dimensional structure with a protruding first support portion. This dimensional change creates a gap that prevents tab compression, improving reliability while the overall structure remains relatively simple to manufacture.
2Reliability
If a protruding first support portion is added to create a gap, then the tab is protected from compression, but the insulator structure becomes more complex
Solution Approach 1:
The complexity is localized only to the first support portion that protrudes to protect the tab. The rest of the insulator, including the second support portion, remains flat and simple. This localized approach provides necessary protection while minimizing overall structural complexity.
Solution Approach 2:
The insulator is segmented into distinct functional portions: the first support portion for tab protection and the second support portion for general insulation. This segmentation allows each portion to be optimized for its specific function while keeping the overall design manageable and not overly complex.
Data Source
AI summary
The present disclosure provides a battery cell, a battery module, a battery pack, a device using the battery cell as a power source, and an assembling method of the battery cell, wherein the battery cell comprising an electrode assembly (20) and an insulating support plate (50), the electrode assembly (20) comprises a main body portion (22) and a tab (21) connected to the main body portion (22), the insulating support plate (50) comprises a first support portion (51) and a second support portion (52) connected to the first support portion (51), the first support portion (51) protrudes in a direction approaching the main body portion (22) relative to the second support portion (52) such that a first gap is formed between the second support portion (52) and the main body portion (22), and at least a portion of the tab (21) is located in the first gap. The first gap formed between the second support portion and the main body portion can accommodate at least a portion of the tab to effectively protect the tab, prevent the tab from being compressed, reduce damages to the tab, and increase the service life of the battery.