Solid-State Battery Module Cushion Block for Cell Expansion
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Solution Overview
Problem
Existing battery modules, particularly those using all-solid-state batteries, face challenges due to their volume expansion and contraction, leading to complex structures and limited shape flexibility, as well as issues with parts count and cushion material dependence on cell shape.
Innovation Solution
A battery module design featuring a cushion block with slots that accommodate solid-state battery cells, allowing for shape independence and absorption of expansion/contraction through elastic materials, with terminals exposed on one side and modules arranged to avoid terminal adjacency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a cushioning member is disposed in a container body to absorb battery expansion/contraction, then the battery module can accommodate volume changes, but the device complexity increases due to a large number of parts and complicated structure
Solution Approach 1:
The cushion block integrates multiple functions into a single component: it provides cushioning for battery expansion/contraction, serves as a structural support element, and acts as a thermal management medium. This merging eliminates the need for separate cushioning members and reduces overall device complexity while maintaining the ability to accommodate battery volume changes
2Ease of manufacture
If resin material is used to fill the exterior case, then the battery module can be formed, but the degree of freedom in the shape of the resin material is low because it depends on the shape of the power storage cell
Solution Approach 1:
The exterior case is segmented into a modular cushion block with standardized dimensions and features. This cushion block can be universally applied to different battery cell shapes and sizes, providing high shape flexibility while maintaining ease of manufacture through standardized production processes
Solution Approach 2:
The cushion block is designed as a universal component that can accommodate various battery cell configurations. Its standardized structure allows it to serve multiple battery modules with different cell shapes, enhancing adaptability while simplifying manufacturing through reuse of the same component design
3Power
If solid-state battery cells are arranged in a battery module, then the battery can supply electric power, but the battery module expands and contracts in volume due to the charge capacity changes
Solution Approach 1:
The elastic cushion block is pre-installed within the exterior case to provide cushioning before battery expansion or contraction occurs. This beforehand cushioning allows the battery module to accommodate volume changes during charging and discharging cycles without structural damage, maintaining power supply capability while managing volume instability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively absorbs cell expansion/contraction, enhances shape flexibility, and prevents local expansion by using elastic cushion blocks and strategic module arrangement, improving energy density and cooling efficiency.
Implementation Method 1
a cushion block having elasticity and provided with a plurality of slots which accommodate the plurality of solid-state battery cells
Data Source
AI summary
A battery module includes a plurality of solid-state battery cells arranged in a first direction and extending in a second direction orthogonal to the first direction, and a cushion block having elasticity and provided with a plurality of slots which accommodate the plurality of solid-state battery cells. The battery module is configured by inserting the plurality of solid-state battery cells into the plurality of slots.