Battery Module Bottom Plate Segmentation for Shape Stability
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Solution Overview
Problem
High-power battery modules face challenges in maintaining shape and firm fixation of battery cells due to gas generation, leading to increased size and weight, which affects their application in hybrid and electric vehicles, and existing solutions add bulk and weight to address these issues.
Innovation Solution
A battery module design featuring a novel plate member with a pattern structure on the bottom plate, including recessed and protruding portions, which supports battery cells and allows for efficient alignment and fixation, reducing size and weight while improving manufacturing productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If structures for maintaining the shape and relative positions of the battery cells are added, then the shape stability and fixation firmness are improved, but the weight and bulk of the battery module increase
Solution Approach 1:
The bottom plate is segmented into a plurality of support portions that correspond to individual battery cells. Each support portion independently supports a respective battery cell, providing localized shape maintenance and fixation without requiring a heavy continuous structural framework across the entire module.
Solution Approach 2:
The bottom plate serves multiple functions simultaneously: it provides structural support for the battery cells, maintains their relative positions, facilitates heat dissipation through its conductive properties, and enables efficient manufacturing through its integrated design. This multi-functionality eliminates the need for separate components for each function, reducing overall weight and bulk.
2Stability of the object's composition
If structures for maintaining the shape and relative positions of the battery cells are added, then the shape stability and fixation firmness are improved, but the bulk and size of the battery module increase
Solution Approach 1:
The bottom plate is segmented into a plurality of support portions that correspond to individual battery cells. Each support portion independently supports a respective battery cell, providing localized shape maintenance and fixation without requiring a heavy continuous structural framework across the entire module.
Solution Approach 2:
The support structures for maintaining battery cell shapes and positions are merged into the bottom plate itself rather than being separate components. This integration reduces the overall bulk and size of the battery module while achieving the same structural stability function.
3Ease of manufacture
If conventional battery module designs are used, then manufacturing processes are traditional, but productivity is reduced due to complex assembly requirements
Solution Approach 1:
The bottom plate serves multiple functions simultaneously: it provides structural support for the battery cells, maintains their relative positions, facilitates heat dissipation through its conductive properties, and enables efficient manufacturing through its integrated design. This multi-functionality eliminates the need for separate components for each function, reducing assembly complexity and improving productivity.
Solution Approach 2:
The support structures for maintaining battery cell shapes and positions are merged into the bottom plate itself rather than being separate components. This integration reduces the overall bulk and size of the battery module while achieving the same structural stability function.
Data Source
Figure 1
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Figure 3A
AI summary
A battery module including a plurality of battery cells aligned in a direction: first and second end plates respectively arranged at outer sides of the plurality of battery cells; and a bottom plate supporting bottom surfaces of the battery cells and including at least a portion including a pattern structure.