Stepped Battery Case Maximizing Internal Space Utilization
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Solution Overview
Problem
Existing battery cells struggle to efficiently utilize internal space in devices with varying structures, making it difficult to achieve desired capacities and sizes, especially in slim designs, and complicate electrical connections during design modifications.
Innovation Solution
A battery cell with a stepped structure, featuring an electrode assembly mounted in a battery case with differently sized receiving parts in the upper and lower cases, allowing for various capacities and sizes, and maximizing internal space utilization by matching the electrode assembly's shape to the case's internal shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional battery case with uniform receiving parts is used, then the manufacturing process is simple, but the internal space utilization in devices with varying structures is poor
Solution Approach 1:
The battery case is divided into upper and lower cases with differently sized receiving parts, creating a stepped structure that segments the internal space to match device contours and improve space utilization
Solution Approach 2:
The invention introduces a stepped structure with different height levels in the receiving parts, adding vertical dimensionality variation to accommodate varying device internal spaces and maximize volume utilization
2Volume of moving object
If the battery case is designed with stepped structure for better space utilization, then internal space utilization is maximized, but the device complexity increases
Solution Approach 1:
The case is segmented into upper and lower parts with different receiving part sizes, creating the stepped structure through division rather than complex monolithic design
Solution Approach 2:
The upper and lower receiving parts are designed with asymmetric different sizes, creating the stepped structure through simple asymmetric geometry rather than complex symmetric variations
3Ease of operation
If existing battery cell structures are used, then electrical connections are straightforward, but adapting to various device designs is difficult
Solution Approach 1:
The stepped battery case structure can accommodate multiple device designs and space configurations, making the battery cell universally adaptable to various device applications while maintaining standard electrical connection methods
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 battery case includes an upper case and a lower case, the upper case being provided with a first receiving part, in which the electrode assembly is received, the lower case being provided with a second receiving part, in which the electrode assembly is received, the first receiving part and the second receiving part being configured to have structures of different sizes, and the electrode assembly has an external shape corresponding to internal shapes of the first receiving part and the second receiving part.