Battery Module Side-Bracket Stacking for Higher Pack Density
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Solution Overview
Problem
Existing battery packs face challenges in achieving high energy density and efficient space utilization, 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 to secure the modules in the left-right or front-rear direction, utilizing nuts and brackets to simplify the securing structure in the up-down direction.
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 in the up-down direction is improved, but the space for securing structures in this direction is reduced
Solution Approach 1:
The patent transitions the securing structure from the up-down direction to the left-right direction. By disposing side brackets on the left and right sides of battery modules and connecting them horizontally, the invention resolves the space conflict in the up-down stacking direction while maintaining secure module fixation.
2Reliability
If a fastening structure is placed in the up-down direction to secure battery modules, then the modules are securely fastened, but the energy density in the up-down direction is reduced due to space occupation
Solution Approach 1:
The invention relocates the fastening function from the vertical dimension to the horizontal dimension. Side brackets extend in the left-right direction and connect adjacent modules horizontally, providing secure fastening without occupying vertical space that would reduce energy density.
Solution Approach 2:
The securing structure is divided into modular side brackets that can be independently disposed on each battery module. These segmented brackets connect horizontally between modules, distributing the securing function across multiple points without requiring a single large vertical fastening component.
3Volume of moving object
If battery modules are closely stacked to improve space efficiency, then space utilization is improved, but the difficulty of securing modules increases
Solution Approach 1:
By moving the securing mechanism to the horizontal dimension with side brackets, the invention enables close vertical stacking without compromising security. The horizontal connection provides structural stability that simplifies the overall securing process compared to complex vertical fastening systems.
Data Source
AI summary
A battery pack is disclosed. The battery pack can include a first battery module including a plurality of battery cells and a first side bracket disposed on a side plate of the first battery module. The battery pack can include a second battery module stacked on the first battery module with a plurality of battery cells and a second side bracket disposed on a side plate of the second battery module. A mounting bracket can be fastened to the first side bracket and the second side bracket.