Inclined Electrode Assembly for Flexible Battery Case Mounting
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Solution Overview
Problem
Existing battery cells face challenges in being mounted efficiently in various device spaces due to their fixed rectangular structure, which limits their ability to maximize internal space utilization and adapt to different device designs, leading to complications in electrical connections and the need for frequent battery case redesigns.
Innovation Solution
A battery cell with an electrode assembly having a quadrangular shape when viewed in plan, where the interior angle between electrode terminals and adjacent sides is less than 90 degrees, allowing for flexible mounting in various spaces and the use of a deformable battery case that can shrink to match the electrode assembly's shape, enabling efficient use of internal space and easy adaptation to different device designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed rectangular battery case structure is used, then manufacturing is simple, but adaptability to various device spaces is poor
Solution Approach 1:
The battery case is designed with a deformable receiving unit that can change its internal shape from a standard rectangular form to accommodate the inclined electrode assembly. This dynamic structure allows the same battery case design to adapt to various device spaces without requiring multiple specialized cases, thereby improving versatility while maintaining manufacturing simplicity.
Solution Approach 2:
The electrode assembly employs an asymmetric inclined structure where the electrode plates are arranged at angles rather than in a symmetric rectangular configuration. This asymmetric design enables the battery to fit into irregular device spaces more effectively, improving adaptability to various mounting environments.
2Volume of moving object
If electrode assembly is mounted in standard rectangular battery case, then manufacturing is easy, but internal space utilization is inefficient
Solution Approach 1:
The receiving unit of the battery case is designed to be deformable, allowing it to change its internal volume and shape to precisely match the inclined electrode assembly. This dynamic adaptation maximizes the utilization of internal space without requiring complex custom-molded cases, balancing space efficiency with manufacturing ease.
3Adaptability or versatility
If frequent battery case redesigns are performed, then adaptability to different device designs is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The battery case is designed with a universal receiving unit that can accommodate different electrode assembly configurations through deformation rather than redesign. This multi-functional design allows a single battery case template to serve multiple device design requirements, reducing the need for frequent redesigns and lowering manufacturing costs.
Solution Approach 2:
The receiving unit's physical parameters (shape, volume) are designed to be changeable within certain ranges to adapt to different device designs. By allowing parameter variations rather than structural redesigns, the system achieves adaptability while maintaining manufacturing simplicity and reducing development costs.
Data Source
AI summary
Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case, wherein the electrode assembly includes two or more electrodes or unit cells stacked in a height direction when viewed in a plan view, the battery case is provided with a receiving unit, in which electrode assembly is mounted, the electrode assembly is configured to have a quadrangular shape having side (a), side (b), side (c), and side (d) when viewed in a plan view, and inclined such that an interior angle between side (a) of each of the electrode plates or the unit cells, at which an electrode terminal is located, and side (b) adjacent to side (a) is less than 90 degrees, and the receiving unit of the battery case has an internal shape corresponding to a planer shape of the electrode assembly.