Stacked Battery Module Brackets for Higher Pack Energy Density
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Solution Overview
Problem
Existing battery packs face challenges in achieving improved energy density and space efficiency, particularly in the up-down direction, due to space limitations and the difficulty in securing battery modules effectively.
Innovation Solution
A battery pack design that includes a first and second battery module with side brackets, a mounting bracket, and additional fastening members, allowing for secure stacking in the left-right or front-rear direction, thereby simplifying the up-down structure and enhancing energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery modules are stacked in the up-down direction to increase energy density, then energy density improves, but the space for fastening structures is limited
Solution Approach 1:
The patent transitions the fastening structure from vertical (up-down direction) to horizontal (left-right direction) by introducing side brackets that extend laterally from the battery module stacks. This dimensional change allows fastening operations to occur in a different spatial plane, resolving the conflict between vertical space utilization for energy density and space availability for fastening structures.
Solution Approach 2:
The battery pack is divided into modular units with individual side brackets attached to each battery module stack. These segmented fastening components can be independently positioned and secured, allowing flexible arrangement that accommodates both the compact vertical stacking for energy density and the necessary fastening space in horizontal directions.
2Stability of the object's composition
If fastening structures are added to secure battery modules, then structural stability improves, but device complexity increases
Solution Approach 1:
The side bracket integrates multiple functions into a single component: it provides structural support, enables fastening through integrated nut mounting surfaces, and facilitates alignment during assembly. This merging of functions reduces the number of separate parts needed, thereby decreasing device complexity while maintaining structural stability.
Solution Approach 2:
The side bracket is designed as a universal component that can be applied to multiple battery module stacks with consistent geometry. The standardized design with nut mounting surfaces and fastening holes allows the same component to serve multiple purposes across different modules, simplifying the overall fastening system while ensuring structural stability throughout the battery pack.
Data Source
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AI summary
A battery pack is disclosed. The battery pack according to an embodiment of the present disclosure includes a first battery module including a plurality of battery cells; a first side bracket disposed on a side plate of the first battery module; a second battery module stacked on the first battery module, and including a plurality of battery cells; a second side bracket disposed on a side plate of the second battery module; and a mounting bracket fastened to the first side bracket and the second side bracket.