Battery Cell End Cover Assembly With Recessed Detecting Structure
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Solution Overview
Problem
The existing battery cell designs face challenges in reducing the size of the battery cell while accommodating detecting assemblies, which can increase the size and risk of interference with other components.
Innovation Solution
The proposed solution involves an end cover assembly with a concave part to accommodate at least a portion of the detecting assembly, reducing the protruding size and space occupied by the detecting assembly, thereby minimizing interference and enhancing energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detecting assembly is mounted on the end cover, then the battery cell can monitor its state information, but the protruding size of the detecting assembly increases and occupies more space
Solution Approach 1:
The detecting assembly is nested within the concave part of the end cover, allowing it to be accommodated in a recessed space rather than protruding outward. This nesting approach reduces the overall volume occupied by the detecting assembly while maintaining its detection functionality.
Solution Approach 2:
Instead of mounting the detecting assembly on the outer surface of the end cover (two-dimensional surface mounting), the design transitions to utilizing the third dimension by creating a concave part that accommodates the detecting assembly within the thickness of the end cover structure.
2Ease of operation
If the detecting assembly protrudes from the end cover, then it can be connected to external components, but the risk of interference with other components increases
Solution Approach 1:
The detecting assembly is nested within the concave part of the end cover, which reduces its protruding portion and minimizes the risk of interference with other components while still allowing necessary connections to be made.
Solution Approach 2:
The end cover is designed with a localized concave part specifically at the position where the detecting assembly is mounted, allowing the detecting assembly to be recessed in that specific area while maintaining the overall flat surface of the end cover to avoid interference with other components.
3Quantity of substance
If the concave part is formed on the end cover to accommodate the detecting assembly, then the energy density is improved, but the structural strength of the end cover may be reduced
Solution Approach 1:
The end cover is designed with a convex part on the opposite side of the concave part, creating an asymmetric structure that compensates for the strength reduction caused by the concave part. The convex part provides additional structural support to maintain the overall strength of the end cover.
Solution Approach 2:
The convex part of the end cover acts as a counterbalancing structural feature that compensates for the strength reduction caused by the concave part. The additional material in the convex part provides structural reinforcement to offset the weakening effect of the recessed area.
Data Source
AI summary
Embodiments of the present application provide an end cover assembly of a battery cell, a battery cell, a battery and an electricity-consuming apparatus. The end cover assembly includes an end cover and a detecting assembly. The end cover is provided with a concave part on a side of the end cover away from an electrode assembly of the battery cell. The detecting assembly is configured to detect a state information of the battery cell, and at least a portion of the detecting assembly is accommodated in the concave part.